TY - BOOK A1 - Meyer, Heinrich F. T1 - Die Indicationen zum Kaiserschnitt und zur Perforation in ihrer Beziehung zur Frage: hat die Mutter oder die Frucht bei einer Collision des Lebens mehr Recht auf Schonung von Seiten der Kunsthilfe? N2 - No abstract available Y1 - 1845 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-22388 ER - TY - JOUR A1 - Linsenmair, Karl Eduard T1 - Gefangenschafts-Bruterfahrungen mit Rotkehlchen, Schwarzkelchen und Sommergoldhähnchen N2 - No abstract available Y1 - 1961 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-44675 ER - TY - JOUR A1 - Thielcke, Gerhard A1 - Linsenmair, Karl Eduard T1 - Zur geographischen Variation des Gesanges des Zilpzalps, Phylloscopus collybita, in Mittel- und Südwesteuropa mit einem Vergleich des Gesanges de Fitis, Phylloscopus trochilus N2 - No abstract available Y1 - 1963 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-44657 ER - TY - JOUR A1 - Linsenmair, Karl Eduard A1 - Jander, R. T1 - Das "Entspannungsschwimmen" von Velia und Stenus N2 - No abstract available Y1 - 1963 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-44663 ER - TY - JOUR A1 - Linsenmair, Karl Eduard T1 - Vogelzwerge des Waldes N2 - No abstract available Y1 - 1964 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-44632 ER - TY - JOUR A1 - Linsenmair, Karl Eduard T1 - Ritter und Türmchen: aus dem Leben der Reiterkrabbe N2 - No abstract available Y1 - 1964 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-44643 ER - TY - JOUR A1 - Linsenmair, Karl Eduard T1 - Vögel am Roten Meer N2 - No abstract available Y1 - 1965 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-44604 ER - TY - JOUR A1 - Kiepenheuer, Jacob A1 - Linsenmair, Karl Eduard T1 - Vogelzug an der nordfrikanischen Küste von Tunesien bis Rotes Meer nach Tag- und Nachtbeobachtungen 1963 und 1964. N2 - No abstract available Y1 - 1965 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-44616 ER - TY - JOUR A1 - Linsenmair, Karl Eduard T1 - Optische Signalisierung der Kopulationshöhle bei der Reiterkrabbe Ocypode saratan Forsk (Decapoda brachyura Ocypodidae) N2 - No abstract available Y1 - 1965 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-44626 ER - TY - JOUR A1 - Linsenmair, Karl Eduard T1 - Konstruktion und Signalfunktion der Sandpyramide der Reiterkrabbe Ocypode saratan forsk (Decapoda Brachyura Ocypodidae) N2 - No abstract available Y1 - 1967 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-44590 ER - TY - JOUR A1 - Huisgen, R. A1 - Christl, Manfred T1 - 1,3-Dipolare Cycloadditionen der Knallsäure N2 - No abstract available Y1 - 1967 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-30227 ER - TY - JOUR A1 - Sebald, Walter A1 - Bücher, T. A1 - Olbrich, B. A1 - Kaudewitz, F. T1 - Electrophoretic pattern of and amino acid incorporation in vitro into the insoluble mitochondrial protein of neurospora crassa wild type and mi-1 mutant N2 - No abstract available KW - Biochemie Y1 - 1968 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-62926 ER - TY - JOUR A1 - Wilhelm, Gernot T1 - Legenden [der Siegel der ehem. Oppenländer-Sammlung] N2 - No abstract available KW - Mesopotamien KW - Geschichte Y1 - 1968 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-51187 ER - TY - JOUR A1 - Linsenmair, Karl Eduard T1 - Anemomenotaktische Orientierung bei Skorpionen (Chelicerata, Scorpiones) N2 - 1. Scorpions can orient menotactically to horizontal air currents (Fig. 1). 2. Changing the wind velocity from 0,05-0,1 m/sec to 3--5 m/sec has no influence on the menotactic angle kept by an anemomenotactic oriented scorpion (Fig. 2). 3. The receptors percieving the direction of air currents are the trichobothria. 4. Orientation to horizon landmarks, anemomenotactic and astromenotactic orientation does not exclude each other but complete themthelves mutually: a) A scorpion orienting to horizon landmarks learns the corresponding anemomenotactic and astromenotactic angle (Fig. 4). b) While orienting anemomenotactically (which is normally the main means of orientation when landmarks are absent) they continously learn new astromenotactical angles (Fig. 5), thus compensating for the movement of the moon or sun which can not be compensated otherwise. c) Short calms and short changes of wind direction can be overcome by astrotaxis. Y1 - 1968 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-44589 ER - TY - JOUR A1 - Linsenmair, Karl Eduard T1 - Zur Lichtorientierung der Walzenspinnen (Arachnida, Solifugae) N2 - No abstract available Y1 - 1968 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-46869 ER - TY - JOUR A1 - Linsenmair, Karl Eduard T1 - Pyramidenbau - Ausdruck des Imponierverhaltens von Reiterkrabben am Roten Meer N2 - Werben und Drohen gehören zu den Verhaltensweisen mit Mitteilungswert, die besonders häufig - im Dienste ihrer SignalIunktion umgestaltet - zu Auslösern werden. Solche Auslöser, seien es nun besondere Bewegungsweisen und/oder spezielle morphologische Strukturen, sind an das Individuum gebunden. Eine optische Werbung oder ein Drohen mit körperfremden Mitteln, stellvertretend für ein Individuum, galt bislang als Privileg des Menschen. Die folgenden Ausführungen werden aber zeigen, daß auch andere Lebewesen derartige "Aushängeschilder" gebrauchen. Y1 - 1968 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-44579 ER - TY - JOUR A1 - Knecht, Sigrid A1 - Scheer, Ulrich T1 - Lautäußerung und Verhalten des Azoren-Buchfinken (Fringilla coelebs moreletti Pucheran) N2 - Einleitung und Methode S. 155. - Brutbiologie S. 155. - Motivgesang S. 157. - Sozialruf (Social Call) S. 161. - Entwicklung des Sozialrufs S. 164. - Brumimmungsruf (Regenruf) S. 165. - Flugruf S. 166. - Alarmruf eines Jungvogels S. 167. - Bestimmung der ReviergroBe S. 167. - Zusammenfassung S. 168. - Summary S. 168. - Literaturverzeichnis S. 169. Es wird untersucht, ob die Azoren-Buchfinken "Rassengesang" und "Rassenrufe" haben. Gesange und Rufe wurden auf Tonband aufgenommen und klangspek trogra phiert. Motivgesang. Jedes cJ beherrscht 2-6 verschiedene Gesangsformen, wobei stets eine "Alltagsform" mit der stark vereinfachten Phrase di-djah endigt. Die anderen, weniger haufigeren Gesangsformen ("Sonntagsformen") zeigen eine besser ausgearbeitete Endphrase, die jedoch nie so kompliziert wie bei kontinentalen Buchfinken ist. In Gebieten, in denen sich bevorzugt Kanarienvogel aufhalten, konnen Buchfinken Gesangselemente iibernehmen. Sozialruf. Das kontinentale pink ist auf alIen Azoreninseln durch ga ersetzt, so daB man von einem Rassenruf sprechen kann. Er ist mit starker Aggressionsneigung verkniipft. Der Sozialruf zeigt einen weiten Frequenzumfang, hervorgerufen durch mehrere simultane Noten. Brutstimmungsruf (Regenruf). Eine Anzahl verschiedener Rufe wurde spektrographiert. Vom cJ ist er bei maBiger Gefahr, aber auch spontan (30-70 Rufe/Min.) zu horen. Flugruf. Er scheint mit dem Flugruf der Nominatform identisch zu sein. Bestimmung der Reviergrope. Ein cJ wurde innerhalb seines Reviers an die "akustische Leine" genommen und bis zu den Reviergrenzen gezogen. Verhalten und LautauBerung anderten sich in Abhangigkeit von der jeweiligen Entfernung bis zur Reviergrenze. N2 - The attempt was made to determine whether Azores chaffinches possess a "racial song" or "racial calls". The songs and calls were tape-recorded and sound-spectrographs were prepared. 1. The song motif. Each cJ possesses 2-6 different song types, among which there is an "everyday type" which always ends with the greatly simplified phrase: dee-chah. The other, less frequent song types ("Sunday types") exhibit a more developed final phrase, though this is not as complex as that of Continental chaffinches. In areas where canaries commonly occur, chaffinches may adopt some of their song elements. 2. The social call. The Continental pink is replaced by gai in all of the Azores island forms, so it is justifiable to speak of a "racial call". This call is correlated with a strong aggressive tendency; it exhibits a broad frequency range based upon simultaneous utterance of several notes. 3. The brooding call ("rain-call"). A number of different calls were spectrographed. With the cJ, this call can be heard in response to mild danger and also as a spontaneous utterance (30-70 calls /min.). 4. Flight call. This seems to be identical to the flight call of the nominate type. 5. Determination of territory size. A cJ was led within his territory on an "acoustical lead" and drawn to his territorial boundaries. His. behaviour and vocalizations altered in relation to the distance from the territorial boundary. KW - Tierpsychologie Y1 - 1968 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-39479 ER - TY - JOUR A1 - Christl, Manfred A1 - Huisgen, R. T1 - Alte und neue Cycloadditionen der Nitriloxide N2 - No abstract available Y1 - 1968 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-30237 ER - TY - BOOK A1 - Ruhe, Ernstpeter T1 - Untersuchungen zu den altfranzösischen Übersetzungen der Disticha Catonis N2 - No abstract available Y1 - 1968 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-36689 ER - TY - JOUR A1 - Neupert, W. A1 - Sebald, Walter A1 - Schwab, A. J. A1 - Pfaller, A. A1 - Bücher, T. T1 - Puromycin sensitivity of ribosomal label after incorporation of \(^{14}\)C-labelled amino acids into isolated mitochondria from Neurospora crassa N2 - Radioactive amino acids were incorporated into isolated mitochondria from Neurospora crassa. Then the mitochondrial ribosomes were isolated and submitted to density gradient centrifugation. A preferential labelling of polysomes was observed. However, when the mitochondrial suspension was treated with puromycin after amino acid incorporation, no radioactivity could be detected in either the monosomes or the polysomes. The conclusion is drawn that isolated mitochondria under these conditions do not incorporate significant amounts of amino acids into proteins of their ribosomes. KW - Biochemie Y1 - 1969 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-62899 ER - TY - JOUR A1 - Sebald, Walter A1 - Schwab, A. J. A1 - Bücher, T. T1 - Cycloheximide resistant amino acid incorporation into mitochondrial protein from Neurospora crassa in vivo N2 - No abstract available KW - Biochemie Y1 - 1969 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-62900 ER - TY - JOUR A1 - Sebald, Walter A1 - Hofstötter, T. A1 - Hacker, D. A1 - Bücher, T. T1 - Incorporation of amino acids into mitochondrial protein of the flight muscle of Locusta migratoria in vitro and in vivo in the presence of cycloheximide N2 - No abstract available KW - Biochemie Y1 - 1969 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-62919 ER - TY - JOUR A1 - Neupert, W. A1 - Sebald, Walter A1 - Schwab, A. J. A1 - Massinger, P. A1 - Bücher, T. T1 - Incorporation in vivo of \(^{14}\)C-labelled amino acids into the proteins of mitochondrial ribosomes from Neurospora crassa sensitive to cycloheximide and insensitive to Chloramphenicol N2 - Radioactive amino acids were incorporated in vivo into N eurospora crassa cells, and the mitochondrial ribosomes were isolated. The incorporation of radioactivity into the proteins of these ribosomes was inhibited by cycloheximide, but not by chloramphenicol. It is therefore concluded that these proteins are synthesized on the cycloheximide sensitive and chloramphenicol insensitive cytoplasmic ribosomes. KW - Biochemie Y1 - 1969 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-62884 ER - TY - JOUR A1 - Wilhelm, Gernot A1 - Haas, Volkert T1 - Zum hurritischen Ergativ N2 - No abstract available KW - Alter Orient KW - Semitistik Y1 - 1969 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-51203 ER - TY - JOUR A1 - Linsenmair, Karl Eduard T1 - Anemomenotaktische Orientierung bei Tenebrioniden und Mistkäfern (Insecta, Coleoptera) N2 - 1. Die Feistkäfer Pimelia grossa, P. tenuicornis, der Mehlkäfer Tenebrio molitor, die Mistkäfer Geotrupes silvaticus und G. stercorarius konnen sich unter entsprechenden Bedingungen rein anemomenotaktisch orientieren (Abb. 1-8). Sie bevorzugen Laufwinkel, die in relativ enge Winkelbereiche rechts und links der beiden Grundrichtungen führen (Abb. 3, 4, 26). 2. Die Bevorzugung bestimmter Winkelgrößen andert sich bei Geotrupes nicht gesetzmig mit der Tageszeit, der Temperatur (im Bereich 18-28° C) oder dem Fütterungszustand (Abb. 8-11). 3. Die untere Grenze der Windstärke, die eine menotaktische Einstellung ermöglicht, liegt für die Mistkäfer bei etwa 0,15 m/sec, für die Feistkäfer bei etwa 0,4 m/sec. Die obere Grenze befindet sich bei Geschwindigkeiten, die den Käfern ein Vorwärtskommen unmöglich machen. 4. Bei der menotaktischen Einstellung wird nur die Reizrichtung nicht aber die Reizstarke bewertet (Abb. 13-15). 5. Die Kontinuitat des Luftstroms ist keine Voraussetzung für die anemomenotaktische Orientierung: Die Käfer orientieren sich auch nach kurzen Windstößen (Abb. 17, 19, 21). Während der Windstille kommt es zu regelhaften Abweichungen von dem bei Wind eingehaltenen Kurs (Abb. 18). Das Ausmaß dieser Abweichungen wird nach häufigen Windunterbrechungen stark verringert (Abb. 20). 6. Gegen Turbulenzen des Luftstroms, wie sie über unebenem Untergrund entstehen, ist die Anemomenotaxis der Käfer nicht sehr anfällig (Abb. 22). 7. Die Sinnesorgane, die dem intakten Käfer die Windrichtungsbestimmung ermöglichen, sprechen auf Bewegungen im Pedicellus-Flagellumgelenk an. Ein Verlust der Endkolben hat beim Mistkäfer keinen Einfluß auf die Richtungs- und Winkelgrößenwahl, auch die Streuung wird nicht signifikant größer. 2 Flagellenglieder pro Antenne ermöglichen bei Windgeschwindigkeiten um oder über 1 m/sec noch eine anemomenotaktische Orientierung (Tabelle 3). 8. Bei 3 Mistkäfern, deren Fühler 4 Wochen bzw. 4 Monate vor dem Versuch entfernt worden waren, konnte wieder eine Orientierung nach der Windrichtung nachgewiesen werden (Abb. 23, Tabelle 1). 9. Die Kafer konnen Laufwinkel intramodal vierdeutig transponieren (z.B. Abb. 28, 29). Am deutlichsten tritt diese Fähigkeit bei Versuchsneulingen zutage, deren Laufe rein fluchtmotiviert sind: Sie wählen normalerweise denjenigen der 4 möglichen Laufwinkel, der der Aufsetzrichtung am nächsten liegt (vgl. Abb. 25, 26). 10. Die Existenz und die Wirkungsrichtung eines Drehkommandos, sowie die Beteiligung beider Grundorientierungen an der Anemomenotaxis werden nachgewiesen (Abb. 31). Die Fähigkeit, eine gleichbleibende Drehkommandogröße (die nie zu einer stärkeren Abweichung als 90° von einer Grundrichtung führen kann) mit verschiedenem Vorzeichen der Drehrichtung versehen zu konnen und die Möglichkeit zur Taxisumkehr (Abb. 32) erklären die orientierungsphysiologische Seite des vierdeutigen intramodalen Transponierens. 11. Versuchsergebnisse, die Aussagen uber den physiologischen Mechanismus der Anemomenotaxis der Käfer zulassen, sprechen für einen Kompensationsmechanismus. Die gegen die Kompensationstheorie der Menotaxis (JANDER, 1957) vorgebrachten Argumente werden im Rahmen der bisherigen Resultate kurz diskutiert. 12. Die möglichen biologischen Bedeutungen der Anemomenotaxis werden besprochen. Es wird angenommen, daß sie beim Appetenzverhalten des nach geruchlichen Schlüsselreizen "suchenden" Käfers ihre biologisch wichtigste Aufgabe erfüllt. Sie kann auch die basalen Aufgaben einer Raumorientierung übernehmen und so z.B. kompaßtreue Fluchtkurse steuern. N2 - 1. The tenebrionid beetles Pimelia grossa, P. tenuicornis, Tenebrio molitor, the dung beetles Geotrupes silvaticus and G. stercorarius can, under specific conditions, use pure anemomenotactic orientation (Figs. l-8). They prefer running-angles which have relatively narrow angular deviations, left and right, to the basic directions (Figs. 3, 4, 26). 2. The preferences for particular angle sizes do not constantly alter with respect to the times of day, temperature (between 18 and 28° C) or feeding conditions (Figs. 8-11). 3. The lowest wind velocities which will evoke menotactic orientation lie at about 0.15 m/sec (Geotrupes) and 0.4 m/sec (Pimelia). The upper limit for anemomenotactic orientation are velocities higher than those against which the animal can move. 4. Only stimulus direction, not strength is evaluated for menotaxis (Figs. 13-15). 5. The continuity of the air stream is not a hard and fast requirement for anemomenotactic orientation: beetles can also orient themselves to short puffs of wind (Figs. 17, 19, 21). During still air, between puffs, the beetles characteristically deviate from their adopted course (Fig. 18). However the more puffs and intervals the less the deviation becomes (Fig. 20). 6. The anemomenotactic orientation is not greatly disturbed in partly turbulent air (for example over rough ground)(Fig. 22). 7. The sense organ which allows the intact beetle to detect wind direction is situated in the pedicellus-flagellum joint. In Geotrupes the loss of the clubs does not have a detrimental effect on either choice of direction or angular preference, neither does it result in significantly larger standard deviations. 2 segments of the flagellum allow the beetle to anemomenotactically orientate to wind directions when the air stream is moving at, or above, 1 m/sec (Table 3). 8. 3 dung beetles were able to orient themselves to wind directions 4 weeks respectively 4 months after antennal amputation (Fig. 23, Table 1). 9. Beetles are able to transpose their running-angles intramodally (Figs. 28, 29). This ability is most obvious in experimentally naive animals whose locomotion is flight motivated. Of the four possible directions they choose the one nearest to that of their long axis after they have been placed on the substrate (Figs. 25, 26). 10. The existence and working direction of a Course order, and the participation of both basic orientations in anemomenotaxis are proven (Fig. 32). The ability to provide a sustained Course order size (that can never deviate over the 90° limit of the basic directions) with different signs (of the turning direction) and the possibility to reverse taxis explains the orientation physiology of the four intramodal transpositions. 11. A compensation mechanism is suggested as the basis for anemomenotaxis of beetles by the experimental evidence in this account. Two main objections against such a mechanism are debated in the discussion. 12. The possible biological significances of anemomenotaxis are discussed. It is proposed that this taxis has its most important significance in appetetive behavior of beetles that are in readiness for an olfactory sign-stimulus. It is proposed that anemomenotaxis can also fullfill the basic role of space orientation (for example, compass true alignment during flight). Y1 - 1969 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-44512 ER - TY - JOUR A1 - Scheer, Ulrich A1 - Franke, Werner W. T1 - Negative staining and adenosine triphosphatase activity of annulate lamellae of newt oocytes N2 - Semi -iso la ted annul a te lamellae were prepared from single newt oocy tes (Triturus alpestris) by a modified Call a n-T omlin technique. Such preparations were examined with the electron mi croscope, and the negative sta ining a ppearance of th e a nnulate lamellae is described . The annul a te lamellae can be de tected either adhering to the nuclear envelope or being detached from it. Sometimes they a re obse rved to be connected with slender tubular-like structures interpreted as pa rts of the endoplasmic reti culum. The results obta ined from negativ e sta ining a re combined with those from sections. Especially, the structural data on th e a nnula te lamellae and the nuclear envelope of the very same cell were compa red . Evidence is presented th a t in the oocytes studied the two kinds of porous cisternae, n amely a nnul a te lamellae and nuclear envelope, a re markedly distinguished in that the annul a te lamellae ex hibit a much higher pore frequency (generally about twice tha t found for the corresponding nuclear envelope) and have al so a rela tive pore area occupying as much as 32 % to 55 % of th e cistern al surface (compa red with 13 % to 22 % in the nuclear envelopes). T he pore di ame ter a nd all other ultras tructural details of the pore complexes, however, a re equi valent in both kinds of porous cisternae. Like the annuli of the nuclear pore complexes of various a nimal and pl ant cells, the a nnuli of the a nnula te lamellae pores reveal al so an eightfold symmetry of their subunits in negatively stained as well as in ectioned ma teria l. Furthermore, th e a nnul a te lamellae a re shown to be a site of activity of the Mg-Na-Kstimul a ted ATPase. Y1 - 1969 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-32087 ER - TY - JOUR A1 - Scheer, Ulrich T1 - Entwicklung der Gametogonien in ektopisch transplantierten Gonaden bei Triturus N2 - Nach homoplastischer Transplantation von larvalen Gonaden mit Fettkiirper in die vordere Leibeshiihle wiichst nur der Fettkiirper an der Leber an, so daB die Gonade nur indirekt mit dem Wirtsgewebe verbunden ist. Die Differenzierung der Gametogonien folgt der Normogenese, bei Ovartransplantationen entwickeln sich Auxocyten. Nach spatestens 27 Tagen ist die Blutversorgung wiederhergestellt. Homo- und autoplastische Transplantationen von Gonaden oh ne Fettkiirper ergeben fUr die Gametogonien eine vollig andere Entwicklung. Sind die Gonaden mit breiter Fliiche angewachsen, liiBt si ch bereits 7 Tage p.o. im Bereich der Kontaktzone Gonade-Leber die Karyolyse der Gametogonienkerne feststellen. Nach 3--4 Wochen stellt das Transplantat eine bindegewebige Zyste ohne Geschlechtszellen dar. Erythrozyten zeigen die Vaskularisation an. 1st nur ein Teil der Gonade mit der Leber verwachsen, zeigt der frei gebliebene Abschnitt eine normale Struktur mit Mitosen der Gametogonien. Die Degeneration der Geschlechtszellen hiingt offenbar von ihrer Lage zum extragonadalen Gewebe ab. N2 - Homografts of gonads including fat· bodies show fusion of the fat-body with liver tissue. Thus, contact between gonad and liver is only indirect. The differentiation of the gametogonia follows the normal way of development. In case of ovary homografts auxocytes appear. Not later than 27 days after transplantation vascularization is reestablished. Homo- and autografts of gonads without fat-body show a quite different development of the gametogonia. When the gonads are broadly fused with liver tissue one notices karyolysis of the gametogonia nuclei within the gonad liver contact region already 7 days after transplantation. After 3- 4 weeks the graft represents a cyst formed by connective tissue without any germ cells. Erythrocytes indicate vascularization. In the gonad partly fused with liver normal structure and mitosis in the gametogonia appear in that part of the transplant not attached to liver tissue. The present experiments suggest that the degeneration of germ cells is depending on their position to extragonadal tissue. Y1 - 1969 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-40510 ER - TY - JOUR A1 - Birkmayer, G. D. A1 - Sebald, Walter A1 - Bücher, Th. T1 - Cytochrom-Oxydase und ein an diese assoziiertes, markiertes Protein aus 14C-markierten Mitochondrien von Neurospora crassa T1 - Cytochrome oxidase and associated with it a labelled protein from 14C-labelled mitochondria of Neurospora crassa N2 - no abstract available KW - Physiologische Chemie Y1 - 1969 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-82135 ER - TY - BOOK A1 - Ruhe, Ernstpeter T1 - Les proverbes Seneke le philosophe. Zur Wirkungsgeschichte des Speculum historiale von Vinzenz von Beauvais und der Chronique dite de Baudouin d'Avesnes. N2 - No abstract available KW - Publilius «Syrus» KW - Sententiae KW - Übersetzung KW - Altfranzösisch Y1 - 1969 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-33603 ER - TY - JOUR A1 - Sebald, Walter A1 - Neupert, W. A1 - Birkmayer, G. D. T1 - Internal and external contributions to the biogenesis of mitochondrial proteins N2 - No abstract available KW - Biochemie Y1 - 1970 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-62876 ER - TY - JOUR A1 - Lutz, Werner K. A1 - Wipf, H. K. A1 - Simon, W. T1 - Alkalikationen-Spezifität und Träger-Eigenschaftender Antibiotica Nigerfein und Monensin T1 - Alkali-cation specificity and carrier qualities of the antibiotics nigericin and monensin N2 - It is shown by means of IR. spectroscopic methodsthat nigericin and monensin bave a cyclic conformation similar to that of their silver salts. Camplex fonnation constants with sodium and potassium ions follow the selectivity order determined by EMF. measurements on liquid membranes: nigericin: K\(^+\) >Rb\(^+\)> Na\(^+\)> Cs\(^+\) >Li\(^+\); monensin: Na\(^+\)> K\(^+\) >Li\(^+\)> Rb\(^+\)> Cs\(^+\). Transport experiments show that nigericin and monensin facilitate the diffusion of potassium ions across model membranes, although in electrolytic transport experiments the permeability is not affected. KW - Toxikologie Y1 - 1970 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-61233 ER - TY - JOUR A1 - Linsenmair, Karl Eduard T1 - Die Interaktion der paarigen antennalen Sinnesorgane bei der Windorientierung laufender Mist- und Schwarzkäfer (Insecta, Coleoptera) T1 - The interaction of the paired antennal sense organs in the wind orientation of walking dung beetles and tenebrionid beetles (Insecta, Coleoptera) N2 - 1. Bei der Anemomenotaxis arbeiten die Windrichtungen perzipierenden, paarigen Sinnesorgane der Antennen - vermutlich die Johnstonschen Organe - als Synergisten zusammen. Der Ausfall der für die Windrichtung spezifischen afferenten Meldungen eines Fühlers führt zu einer Halbierung der Drehtendenzstärke (Abb.I-ll). Es konnten keine Anhaltspunkte gefunden werden, die auf eine direkte zentrale Kompensation dieses Effektes hinweisen. Verschiedene Arten der Ausschaltung, totalc (Abb.2) oder teilweise (Abb. 4) Amputation (bei der der Pedicellus unverletzt bleibt) oder Blockierung des Pedicellus-Flagellumgelenks durch Lackierung (Abb.3), bewirken dieselben Änderungen im Orientierungsverhalten. 2. Der einzelne Fühler fungiert bei der Anemomenotaxis als "zweisinniger Lenker". Ein Käfer mit nur einem Fühler ist - nach einer genügend langen Erholungszeit - noch fähig, die Windrichtung festzustellen und zu ihr eindeutige menotaktische Kurse zu steuern (vgl. z. B. Abb. 1, 9). Außerdem kann er sich wie ein intakter Käfer (Abb. 14) bei plötzlicher Anderung der Reizrichtung um den kleineren Winkelbetrag zu seiner Sollrichtung zurückdrehen (Abb. 15). 3. Zwischen Drehtendenzstärke und Reizrichtung besteht nach den Ergebnissen der Ausschaltversuche eine Sinusfunktion. Gleichgroße Rechts- oder Linksabweichungen des Käfers von der positiven oder negativen Grundrichtung werden von rechtem und linkem Fühler mit der gleichen Drehtendenzstärke bewertet (Abb. 13). Es ist deshalb naheliegend, anzunehmen, daß jeder Fühler bei der Reizrichtungsbewertung seinen Abweichungsbetrag von der nächsten der beiden Grundstellungen mißt. In einer Grundstellung befindet sich der Fühler jeweils dann, wenn sich der Käfer genau gegen oder mit dem Wind eingestellt hat. 4. Afferente Drehtendenz und efferentes Drehkommando sind Dreherregungsgrößen, die sich bei Einstellung des Sollwinkels durch ihre antagonistische Wirkung aufheben. Halbierung der Drehtendenzstärke durch Ausschaltung eines Fühlers führt demnach erwartungsgemäß zu einer Verdopplung der Drehkommandowirkung. Daraus und aus der Sinusförmigkeit der Drehtendenzstärkenkurve ergibt sich, daß Drehkommandogrößen, die beim intakten Käfer die Einhaltung von Menotaxiswinkeln von > 30° zur Folge haben, von der halbierten Drehtendenz nicht mehr kompensiert werden können. Die Käfer können dann Dauerrotationen vermeiden, indem sie das Drehkommando soweit abschwächen, daß es von der halbierten Drehtendenz wieder kompensiert wird (Abb. 8). 5. Standardabweichung und mittlere Laufwinkelgröße sind miteinander korreliert. Die Korrelation gilt in gleicher Weise für das intakte und das einseitig antennenamputierte Versuchstier. 6. Nach einer einseitigen Fühlerausschaltung bevorzugen Tenebrio molitor und Scaurus dubius anfänglich Laufrichtungen zur Seite der intakten Antenne hin. Bei allen VT-Arten nimmt die Neigung zum intramodalen Winkeltransponieren nach Fühlerausschaltung sehr stark zu (Abb. 12). 7. Den Grundorientierungen - positive und negative Anemotaxis - liegt, wie auch der Menotaxis, kein tropotaktischer Mechanismus der Fühlerverschaltung zugrunde. Anemotaxis und Anemomenotaxis unterscheiden sich lediglich dadurch, daß bei letzterer ein efferentes Drehkommando die Sollrichtung verstellt. 8. Die experimentellen Befunde werden im Hinblick auf den, der Anemomenotaxis zugrunde liegenden, physiologischen Mechanismus diskutiert: Sie lassen sich alle widerspruchslos mit einem Kompensationsmechanismus vereinen. N2 - 1. The interaction of the paired antennal sense organs perceiving wind directions-probably the Johnston organs-is a synergistic one. The loss of the specific afferent information concerning wind direction of one antenna is followed by a reduction of 50% of the strength of the "turning tendency" (Figs. I-lI). There is no evidence indicating a central compensation of this effect. Three different ways for eliminating one antenna all resulted in the same effect on orientation behaviour. The three ways were total (Fig. 2) or partial (Fig.4) amputation (in which the pedicellus is not injured) or blocking up the pedicellus-flagellum joint by lacquer (Fig. 3). 2. After an adequate recovery period the beetle with only one antenna is able: a) to determine the wind direction, b) to orientate itself unambiguously anemomenotactically (Fig. 1,9) and c) to turn back to its preferred direction over the smaller angle (Fig. 15). 3. The experimental data suggest a sinoidal function between the strength of the turning tendency and the stimulus direction. In evaluating the stimulus direction each antenna most probably measures its deviation from the nearest of the two basic positions, i. e. exactly with or against the wind: The right or left antenna evaluates equal deviations to the right or the left from the negative or positive basic direction with the same strength of the turning tendency (Fig. 13). 4. The afferent turning tendency and the efferent "course order" are turning excitations, which neutralize each other by their antagonistic action, if the set angle is reached. Halving the strength of the turning tendency by elimination of one antenna therefore leads to a doubling of the course order efficiency. The consequence of this and the sinoidal turning tendency pattern is that course orders, which in the intact beetle lead to angles of 30°, can not be compensated by a halved turning tendency. The beetles then can avoid continuous rotations by diminishing the course order to such an extent that it can be compensated by the halved turning tendency (Fig. 8). 5. The standard deviation and the mean running-angles show a correlation. This correlation is the same for the intact beetle and for the beetle with one antenna amputated. 6. After amputation of one antenna in the beginning Tenebrio molitor and Scaurus dubius at first prefer running towards the side of the intact antenna. After amputation of one antenna all tested species showed an increasing tendency to transpose angles intramodally (Fig. 12). 7. In positive and negative anemotaxis as weil as in anemomenotaxis the cooperation of the two antennae is not based on a tropotactic mechanism. Anemomenotaxis and anemotaxis differ only in the lack of an efferent course order in the latter. 8. The experimental findings with respect to the physiological mechanism concerning anemomenotaxis are discussed: They all are consistent with a compensation mechanism. Y1 - 1970 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-44507 ER - TY - JOUR A1 - Scheer, Ulrich T1 - The ultrastructure of the nuclear envelope of amphibian oocytes: a reinvestigation. III. Actinomycin D-induced decrease in central granules within the pores. N2 - No abstract available Y1 - 1970 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-32110 ER - TY - JOUR A1 - Franke, Werner W. A1 - Scheer, Ulrich T1 - The ultrastructure of the nuclear envelope of amphibian oocytes: a reinvestigation. II. The immature oocyte and dynamic aspects N2 - No abstract available Y1 - 1970 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-32102 ER - TY - JOUR A1 - Becker, Charles R. A1 - Nath, G. T1 - Optical properties of LiIO\(_3\) in the far infrared N2 - No abstract available Y1 - 1970 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-37905 ER - TY - JOUR A1 - Franke, Werner W. A1 - Scheer, Ulrich T1 - The ultrastructure of the nuclear envelope of amphibian oocytes: a reinvestigation. I. The mature oocyte N2 - 1 n order to review the contradictory statements on the ultrast ructure of the nuclear envelope, a study was undertaken combining section and negat ive stai ning electron microscopy on manually isolated oocyte nuclei and nuclear envelopes from six amphibian species including Anura as well as Urodela. The a ppeara nce of the negatively stained iso lated nuclear envelopes is described in deta il and the dependence on the preparation co nditions used is emphas ized . Pore complex structures such as pore perimeter, central granule, an nul ar components, interna l fibrils, and annu lus-attached fibrils could be identified by both techniques, negat ive staining and sect ions. Comparative studies show that no marked diffe rences ex ist in the structural data of the nuclear envelope among the investigated amphibians and the significance of the structural components is discussed. A model of the nuclea r pore complex based on the findings of the present investigation is prese nted. Y1 - 1970 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-32098 ER - TY - JOUR A1 - Becker, Charles R. T1 - Impurity-induced absorption in or near the phonon gap of KI N2 - In or near the phonon gap of KI a single weak line due to OW (OD\(^-\)) at 69.7 (69.3) cm\(^{-1}\) has been observed. A second and much stronger line at 94.1 cm\(^{-1}\) was shown not to be related to OH\(^-\), but instead is thought to be due to CO\(_3\). Y1 - 1970 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-30757 ER - TY - JOUR A1 - Wilhelm, Gernot T1 - ta/erdennu, ta/urtannu, ta/urtānu N2 - No Abstract available KW - Ugarit Y1 - 1970 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-82695 ER - TY - JOUR A1 - Müller, R. A1 - Scheer, Ulrich T1 - Klangspektrographische Untersuchungen der Lautäußerung beim Krallenfrosch, Xenopus laevis N2 - No abstract available Y1 - 1970 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-40529 ER - TY - BOOK A1 - Wilhelm, Gernot T1 - Untersuchungen zum Ḫurro-Akkadischen von Nuzi N2 - No abstract available. KW - Churro-Akkadisch KW - Grammatik KW - Churritisch Y1 - 1970 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-87598 ER - TY - JOUR A1 - Ellgring, Johann Heinrich T1 - Die Beurteilung des Blicks auf Punkte innerhalb des Gesichts N2 - No abstract available Y1 - 1970 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-43115 ER - TY - JOUR A1 - Ruhe, Ernstpeter T1 - A Johenne, ma dame et m'amie N2 - No abstract available Y1 - 1970 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-36735 ER - TY - JOUR A1 - Ruhe, Ernstpeter T1 - Enanchet - "semplice compilatore"? N2 - No abstract available Y1 - 1970 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-36967 ER - TY - JOUR A1 - Weiss, H. A1 - Sebald, Walter A1 - Bücher, T. T1 - Cycloheximide resistant incorporation of amino acids into a polypeptide of the cytochrome oxidase of Neurospora crassa N2 - Radioaetive leueine was ineorporated by N eurospora crassa mitoehondria in vivo in the presence of cyeloheximide. When the membrane protein of these mitochondria was ehromatographieally separated on oleyl polymethaerylie aeid resin, & nurober of fraetions were obtained whieh differ with respeet to their eontents of radioaetivity and eytoehromes. The highest speeifie radioaetivity was found in the fraction eontaining eytoehrome aa3• This fraetion proved to be a pure and enzymatically aetive cytoehrome oxidase. Its ratio of absorbanee at 280 nm (ox)/ 443 nm (red.) was 2.1. By means of sodium dodeeylsulfate gel-electrophoresis, this enzymewas separated into five polypeptides with molecular weights of 30000, 20000, 13000, 10000, and 8000. Only the polypeptide with the molecular weight 20000 displayed a high specific radioaetivity. KW - Biochemie Y1 - 1971 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-62866 ER - TY - JOUR A1 - Christl, Manfred A1 - Reich, H. J. A1 - Roberts, J. D. T1 - Nuclear Magnetic Resonance Spectroscopy. Carbon-13 Chemical Shifts of Methylcyclopentanes, Cyclopentanols, and Cyclopentyl Acetates N2 - No abstract available KW - Organische Chemie Y1 - 1971 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-57862 ER - TY - JOUR A1 - Lutz, Werner K. A1 - Winkler, F. K. A1 - Dunitz, J. D. T1 - Crystal structure of the antibiotic monensin similarities and differences betweeen free acid and metal complex N2 - The structure of monensin, C36H620 11 , has been deterrnined by X-ray analysis of its crystalline monohydrate (orthorhombic, a = 15.15, b = 23.61, c = 10.65 A, Z = 4, space group P212121). Phases were assigned by direct methods, malring use of the 'tangent formula'. Although the conformation of the free acid resembles that of the silver salt in being cyclic, there are differences in the hydrogen bonding pattern. These featurcs are discussed in relation to the cornplexation of metal ions by m.onensin. KW - Toxikologie Y1 - 1971 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-61228 ER - TY - JOUR A1 - Lutz, Werner K. A1 - Früh, P. U. A1 - Simon, W. T1 - Microcalorimetric determination of ΔH0, ΔG0 and ΔS0 for the interaction of the carrier antibiotics nigericin and monensin with sodium and potassium ions N2 - The thermodynainic parameters ΔH0, ΔG0 and ΔS0 - and thereby the equilibrium constants - for the complexation of the carrier antibiotics nigericin and monensin with sodium and potassium ions in methanol at 25°C have been determined by microcalorimetry. Tbc results are discussed in terms of the nature of the interaction between ligands and cations. KW - Toxikologie Y1 - 1971 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-61218 ER - TY - BOOK A1 - Linsenmair, Karl Eduard T1 - Hvorfor synger fuglene? N2 - No abstract available Y1 - 1971 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-44530 ER - TY - BOOK A1 - Kartenbeck, J. A1 - Zentgraf, H. A1 - Scheer, Ulrich A1 - Franke, Werner W. T1 - The nuclear envelope in freeze-etching N2 - No abstract available KW - Anatomie Y1 - 1971 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-40534 SN - 3-540-05538-X ER - TY - JOUR A1 - Franke, Werner W. A1 - Kartenbeck, Jürgen A1 - Zentgraf, Hanswalter A1 - Scheer, Ulrich A1 - Falk, Heinz T1 - Membrane-to-membrane cross-bridges. A means to orientation and interaction of membrane faces N2 - No abstract available Y1 - 1971 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-32122 ER - TY - JOUR A1 - Scheer, Ulrich A1 - Knecht, Sigrid T1 - Die Vögel der Azoren T1 - The birds of the Azores N2 - Während einer viermonatigen Reise zu allen neun Azoreninseln wurde der gesamte Brutvogelbestand dieses Archipels untersucht. Die Befunde sind in einer detaillierten Artenliste zusammengefaßt, ergänzt durch ökologische und brutbiologische Anmerkungen. Zahlreiche Beobachtungen lassen vermuten, daß vor allem Stieglitz und Kanarienvogel tägliche und auch jahreszeitlich bedingte interinsulare Flüge unternehmen. Die Lautäußerungen sechs verschiedener Vogel arten sind in Klangspektrogrammen dargestellt. Ein mathematischer Ansatz zeigt, daß sich die Anzahl der auf einer bestimmten Insel brütenden Landvogelarten umgekehrt proportional zur Entfernung zum europäischen Festland und proportional zum Logarithmus naturalis der Inselfläche verhält. Die abgeleitete Formel läßt sich prinzipiell auch auf andere Atlantikinseln anwenden, die weitgehend vom Festland isoliert sind. N2 - Observations of the breeding birds were performed during a four months journey of the nine Azores islands. The data are summed up in a detailed species-list supplemented by ecological notes as weIl as some comments upon the breeding behaviour. Several findings suggest that goldfinch and canary undertake daily and also seasonal flights between the islands. Songs and calls of six different species are represented in sound-spektrographs. A mathematical analysis shows that the species number of the breeding land birds of a certain island is indirectIy proportional to the distance between the island and the european continent and directly proportional to the natural logarithm of the island area. The deduced formula is also principly applicable for other atlantic islands which are largely iso la ted from the continent. Y1 - 1971 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-39668 ER - TY - JOUR A1 - Linsenmair, Karl Eduard A1 - Linsenmair, Christa T1 - Paarbildung und Paarzusammenhalt bei der monogamen Wüstenassel Hemilepistus reaumuri (Crustacea, Isopoda, Oniscoidea) N2 - No abstract available Y1 - 1971 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-33937 ER - TY - JOUR A1 - Becker, Charles R. T1 - Evidence for a quasi-phonon gap in CsCl N2 - The observed impurity induced far-infrared absorption in CsCl : Rb\(^+\) and CsCl : K\(^+\) is compared with a calculated density of acoustic phonon states in CsCl. The absorption due to CsCl : Rb\(^+\) displays a minimum between the acoustic and optic phonon bands. A narrow line is observed in CsCl: K\(^+\) at 85.8 cm\(^{-1}\) which falls in this quasi-phonon gap. Y1 - 1971 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-30767 ER - TY - THES A1 - Kreuzer, Karl T1 - Culpa in contrahendo und Verkehrspflichten. Ein rechtsvergleichender Beitrag zur Begrenzung der Haftung nach Vertragsrecht N2 - Das Rechtsinstitut der Culpa in contrahendo (Cic) wurde von der deutschen Rechtswissenschaft und Rechtsprechung entwickelt, um die vertraglichen Haftungsnormen einschl. der Schutzpflichten für Leib und Eigentum auf den vor-vertraglichen Bereich zu erstrecken. Diese Erstreckung ist für die genannten Schutzpflichten weder dogmatisch begründbar noch praktisch notwendig. Die funktionell für den Schutz des allgemeinen Erhaltungsinteresses zuständige Deliktsordnung reicht hier völlig aus. Der auf den vor-vertraglichen Bereich erstreckte Schutzbereich des Schuldvertrags ist durch dessen Funktion als rechtliches Instrument des Güter- und Leistungsaustauschs bestimmt und erfasst nicht das Interesse an der Integrität der gegenüber jedermann geschützten Rechtsgüter, insbes. an der Unversehrtheit von Person und Eigentum. Personen- und Sachschäden sind für das vor-vertragliche Verhandlungsschuldverhältnis ebenso wenig normrelevant wie für das Zielvertragsverhältnis. Der Schutzbereich des Cic-Schuldverhältnisses ist daher auf Verhalten zu beschränken, das Bezug zu dem konkret intendierten Leistungsverhältnis (Zielvertrag) aufweist. N2 - Culpa in contrahendo (Cic) has been invented by German scholars and judges in order to broaden the scope of application of the regime of contractual liability (including the rules protecting the integrity of the body and property of the contracting partner) into the pre-contractual area. This expansion is neither dogmatically founded nor necessary from a practical point of view, as the functionally appropriate torts regime is completedly sufficient to cope with the pertinent cases. The scope of application of the contractual liability regime is restricted by the function of contracts, i.e. to legally govern the interchange of commodities and services ; it does not cover tort situations. The same must prove right for the pre-contractual liability regime derived from the liability regime of the intended contract. Therefore, Cic does not cover cases of bodily injuries and destruction of objects but has to be restricted to the breach of pre-contractual duties relating to the content of the contract in view. KW - Culpa in contrahendo KW - Culpa in contrahendo KW - Verkehrspflichten Y1 - 1971 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-116452 N1 - Freiburg im Breisgau, Univ., Habil.-Schr., 1972 ER - TY - JOUR A1 - Wilhelm, Gernot T1 - Eine altbabylonische Graphik im Hurro-Akkadischen N2 - No abstract available KW - Ugarit Y1 - 1971 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-82709 ER - TY - JOUR A1 - Franke, Werner W. A1 - Scheer, Ulrich T1 - Some structural differentiations in the HeLa cell: heavy bodies, annulate lamellae and cotte de maillet endoplasmic reticulum N2 - A small fraction of HeLa cells within an exponentially growing culture showed cisternal differentiations, such as cytoplasmic as well as intranuclear annulate lamellae and special smooth surfaced endoplasmic reticulum aggregates with a typical "Cotte de maillet" appearance. Additionally, clusters of dense granules were observed in the cytoplasm which were often associated with polysomes and strongly resembled the so-called "heavy bodies" known in particular in diverse oocytes. The functional meaning of these structures is discussed. Moreover, it is deduced from the ultrastructural identity of the pore complexes in the nuclear envelope and the cytoplasmic and intranuclear annulate lamellae that the pore complex material with its highly ordered arrangement is not a structure characteristic for nucleocytoplasmically migrating material, but rather is a general structural expression of a tight binding of ribonucleoprotein (RNP) to cisternal membranes. The pore complexes are thought of as representing sites of a RNP-storage. A similar functioning is hypothesized for the "heavy body"like aggregates. To the current hypotheses on the formation of annulate lamellae and the nuclear envelope, which are based on the concept of membrane continuities and constancies, the alternative view of a self assembly mechanism of membrane constituents on nucleoprotein structures is added. KW - Cytologie Y1 - 1971 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-40614 ER - TY - THES A1 - König, Dorothea T1 - Das Verbalsystem des Vatikanski Hrvatski Molitvenik N2 - No abstract available KW - Breviarium romanum KW - Verb Y1 - 1971 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-38552 ER - TY - JOUR A1 - Ellgring, Johann Heinrich T1 - Sozialpsychologische Aspekte des Drogenkonsums N2 - No abstract available Y1 - 1971 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-42471 ER - TY - JOUR A1 - Schwab, A. J. A1 - Sebald, Walter A1 - Weiss, H. T1 - Different pool sizes of the precursor polypeptides of cytochrome oxidase from Neurospora crassa. N2 - Pulse-labelling experiments with growing Neurospora crassa revealed that the polypeptides composing the protein moiety of a cytochrome oxidase preparation are derived from at least four independent pools of precursor polypeptides. The pool sizes range from 2 ° f 0 to 25 °/0 of the amount of the corresponding polypeptide present in cytochrome oxidase. The smallest pool is assigned to a polypeptide of mitochondrial origm. Serial pools were found for one of the polypeptides. KW - Biochemie Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-62841 ER - TY - JOUR A1 - Sebald, Walter A1 - Weiss, H. A1 - Jackl, G. T1 - Inhibition of the assembly of cytochrome oxidase in Neurospora crassa by chloramphenicol N2 - Cytochrome oxidasewas prepared from Neurospora crassa by chromatography on oleyl polymethacrylic acid resin and separated into seven polypeptides by polyacrylamide gel electrophoresis in the presence of sodium dodecylsulfate. Incorporation oflabelled amino acids into the single polypeptideswas investigated after a pulse labelling in the absence and presence of chloramphenicol, and afterwashing out the inhibitor. Chloramphenicol (4 mg/ml) inhibited amino acid incorporation into all polypeptides 90-95%• while labeHing of the whole membrane protein was inhibited only 30%• Mter washing out the inhibitor and further growth of the cells. the four smaller polypeptides were highly labelled, whereas the other polypeptides showed only a. small increase in radioactivity. It is concluded that the four small-sized polypeptides of cytochrome oxidase are synthesized but not integrated into the functional enzyme under the action of chloramphenicol. KW - Biochemie Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-62852 ER - TY - JOUR A1 - Bast, K. A1 - Christl, Manfred A1 - Huisgen, R. A1 - Mack, W. T1 - Additionen der Nitriloxide an CN-Mehrfachbindungen N2 - No abstract available KW - Organische Chemie Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-57879 ER - TY - JOUR A1 - Christl, Manfred A1 - Roberts, J. D. T1 - Nuclear Magnetic Resonance Spectroscopy : Carbon-13 Chemical Shifts of Small Peptides as a Function of pH N2 - No abstract available KW - Organische Chemie Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-57885 ER - TY - JOUR A1 - Wilhelm, Gernot A1 - Haas, V. T1 - Zum hurritischen Lexikon I N2 - No abstract available KW - Orientalistik Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-51215 ER - TY - JOUR A1 - Decius, J. C. A1 - Becker, Charles R. A1 - Fredericks, W. J. T1 - Force constants of the metaborate ion in alkali halides N2 - No abstract available KW - Physik Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-50935 N1 - Siehe dazu: Erratum: Force constants of the metaborate ion in alkali halides (http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-37992) ER - TY - JOUR A1 - Goebel, Werner A1 - Kreft, Jürgen T1 - Accumulation of replicative intermediates and catenated forms of the colicinogenic factor E\(_1\) in E. coli during the replication at elevated temperatures N2 - No abstract available KW - Biologie Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-60625 ER - TY - JOUR A1 - Knecht, Sigrid A1 - Scheer, Ulrich T1 - Die Liste der Vogelarten von S. Miguel (Azoren) des Gaspar Fructuoso (gestorben 1591) N2 - No abstract available Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-41402 ER - TY - BOOK A1 - Linsenmair, Karl Eduard T1 - Varför sjunger faglarna? : Fågelsångens formeroch funktioner N2 - No abstract available Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-44521 SN - 91-27-24248-X ER - TY - JOUR A1 - Christl, Manfred A1 - Roberts, John D. T1 - Carbon-13 Nuclear Magnetic Resonance Spectroscopy : Conformational Analysis of Methyl-Substituted Cycloheptanes, Cycloheptanols, and Cycloheptanones N2 - The 130 chemical shifts were determined of the carbons in 12 cycloheptanes, 21 cycloheptanols, and 8 cycloheptanones. In some cyc1oheptanols and cyc1oheptanones, the assignments have been obtained unambiguously by the synthesis of deuterated derivatives and the use of paramagnetic-shift reagents. Substituent effects for the different types of groups have been calculated. The most informative data about the cyc10heptane conformations were provided by the relatively well understood I' effects. The results are generally in,good agreement with predictions based on the twist-chair form, which has been predicted by Hendrickson to be the most stable conformation. Pairs of cis-trans isomers are found to have rather characteristic differences in their 130 spectra. This fact was used to assign the resonances found for cis-trans mixtures of methyl-substituted cyc1oheptanols to specific isomers. Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-41663 ER - TY - JOUR A1 - Schwab, A. J. A1 - Sebald, Walter A1 - Weiss, H. T1 - Schnelle Markierung eines mitochondrial synthetisiertem Polypeptids einer Cytochromoxidasen-Präparation aus Neurospora T1 - Rapid labeling of a mitochondrially synthetized polypeptide of a cytochrome oxidase preparation from neurospora N2 - no abstracts available KW - Physiologische Chemie Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-84206 ER - TY - JOUR A1 - Franke, Werner W. A1 - Scheer, Ulrich A1 - Fritsch, Hansjörg T1 - Intranuclear and cytoplasmic annulate lamellae in plant cells N2 - No abstract available Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-32148 ER - TY - JOUR A1 - Scheer, Ulrich A1 - Franke, Werner W. T1 - Annulate lamellae in plant cells: formation during microsporogenesis and pollen development in Canna generalis Bailey N2 - The occurrence of stacked annulate tamellae is documented for a plant cell system, namely for pollen mother cells and developing pollen grains of Canna generalis. Their structural subarchiteeture and relationship to endoplasmie reticulum (ER) and nuclear envelope cisternae is described in detail. The results demonstrate structural homology between plant and animal annulate lamellae and are compatible with, though do not prove, the view that annulate lamcllar cisternae may originate as a degenerative form of endoplasmic retieulum. Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-32160 ER - TY - JOUR A1 - Linsenmair, Karl Eduard T1 - Die Bedeutung familienspezifischer "Abzeichen" für den Familienzusammenhalt bei der sozialen Wüstenassel Hemilepistus reaumuri Audouin und Savigny N2 - No abstract available Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-32663 ER - TY - JOUR A1 - Franke, Werner W. A1 - Scheer, Ulrich T1 - Structural details of dictyosomal pores N2 - Structural details of the dictyosomal pores in several plant cell types are described from tangential and cross sections of Golgi cisternae. Frequency distributions of the sizes of such Golgi pores are given and compared with the corresponding values of nuclear pores in the same cells. Golgi pore inner diameters are less homogeneously distributed and can be as small as 100 A or less. They are not simply cisterna I holes, but are often associated with centrally located electron dense granules or rods and with inner pore filaments. This organization, which is very common in dictyosomal pores in plant and animal cells, has some similarities with the structural architecture of nuclear envelope and annulate lamellar pore complexes. The particulate material associated with the dictyosomal pores shows spatial and structural relationship to cytoplasmic ribosomes. Possible modes of Golgi pore formation and some consequences of these observations for interpretation of nuclear pore structures are discussed. Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-32155 ER - TY - JOUR A1 - Franke, Werner W. A1 - Kartenbeck, Jürgen A1 - Krien, S. A1 - VanderWoude, W. J. A1 - Scheer, Ulrich A1 - Morré, D. J. T1 - Inter- and intracisternal elements of the Golgi apparatus: A system of membrane-to-membrane cross-links N2 - Electron opaque cross-bridge structures span the inter- and intracisternal spaces and provide membrane-to-membrane connections between adjacent cisternae of dictyosomes of pollen tubes of Clivia and Lilium. Additionally, the classic intercisternal rods, characteristic of intercisternal regions near the maturing face of dictyosomes, are connected with the adjacent membranes through similar cross-bridge elements. We suggest that these structural links are responsible for maintaining the flattened appearance of the central parts of Golgi apparatus cisternae as well as for the coherence of cisternae within the stack. Observations on other plant (e.g. microsporocytes of Canna) and animal cells (e.g. rodent liver and hepatoma cells, newt spermatocytes) show that such an array of membrane cross-links is a universal feature of Golgi apparatus architecture. The cross-bridges appear as part of the complex "zone of exclusion" which surrounds dictyosomes, entire Golgi apparatus and Golgi apparatus equivalents in a variety of cell types. KW - Golgi apparatus KW - Membranes KW - Cross-bridges KW - Electron microscopy Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-39514 ER - TY - JOUR A1 - Scheer, Ulrich T1 - The ultrastructure of the nuclear envelope of amphibian ooctyes: IV. On the chemical nature of the nuclear pore complex material N2 - In order to investigate the chemical composition of the nuclear pore complexes isolated nuclei from mature Xenopus laevis oocytes were manually fractioned into nucleo· plasmic aggregates and the nuclear envelopes. The whole isolation procedure takes no more than 60- 90 sec, and the pore complexes of the isolated envelopes are well preserved as demonstrated by electron microscopy. Minor nucleoplasmic and cytoplasmic contaminations associated with the isolated nuclear envelopes were determined with electron microscopic morphometry and were found to be quantitatively negligible as far as their mass and nucleic acid content is concerned. The RNA content of the fractions was determined by direct phosphorus analysis after differential alkaline hydrolysis. Approximately 9% of the total nuclear RNA of the mature Xenopus egg was found to be attached to the nuclear envelope. The nonmembranous elements of one pore complex contain 0.41 X 10- 16 g RNA. This value agrees well with the content estimated from morphometric data. The RNA package density in the pore complexes (270 X 10- 15 g/fJ-3) is compared with the nucleolar, nucleoplasmic and cytoplasmic RNA concentration and is discussed in context with the importance of the pore complexes for the nucleo-cytoplasmic transport of RNA-containing macromolecules. Additionally, the results of the chemical analyses as well as of the 3H-actinomycin D autoradiography and of the nucleoprotein staining method of Bernhard (1969) speak against the occurence of considerable amounts of DNA in the nuclear pore complex structures. KW - Nuclear envelope KW - Amphibian oocytes KW - Nuclear pore complex KW - Chemical nature KW - Electron microscopy Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-39500 ER - TY - JOUR A1 - Becker, Charles R. A1 - Martin, T. P. T1 - Infrared absorption by Impurity-pair resonant modes in NaCl:F N2 - New resonant-mode infrared absorption lines have been observed in NaCl with high concentrations of fluorine impurities. The quadratic concentration dependence of the strength of these lines indicates that they are due to pairs of fluorine impurities. At the resonant frequencies, the motion of some host ions appears to be as important as the motion of the impurities themselves. KW - Festkörperphysik Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-37840 SN - 1098-0121 ER - TY - JOUR A1 - Ishigama, M. A1 - Becker, Charles R. A1 - Martin, T. P. A1 - Prettl, W. T1 - Impurity-pair mode in NaCl:KF N2 - No abstract available Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-31255 ER - TY - JOUR A1 - Linsenmair, Karl Eduard T1 - Anemomenotactic orientation in beetles and scorpions N2 - Scorpions, living in North African semideserts are - in spite of disrupting experimental interferences - able to maintain a certain direction in their natural environment in the dark on a plane surface. Under comparable laboratory conditions, excluding the possibility of light or gravity orientation, they can orient themselves if a directed air current passes over the "arena." In most cases the scorpions do not run necessarily with or against the wind, but rather maintain constant angles to the air current for anywhere from minutes to many hours. They are running anemomenotactically (ref. 1). Under identical conditions many species of beetles also orient themselves to air currents (refs. 2 to 4). The main problems to be solved in the study of anemomenotactic orientation are: (1) Which physical qualities of the air current have an influence on the anemomenotaxis? (2) With which sense organs do beetles and scorpions perceive wind directions? (3) Which physiological mechanism is the basis of anemomenotactic orientation? (4) What is the biological significance of anemomenotaxis in beetles and scorpions? With respect to these problems, more study has been done on beetles than on scorpions. Therefore, due to lack of space, I shall discuss mainly some of the results obtained in experiments with dung beetles (Geotrupes silvaticus, G. ,Stercorarius, G. armifrons, G. niger, Scarabaeus variolosus) and tenebrionid beetles (Tenebrio molitor, Pimelia grossa, P. tenuicomis, Scaurus dubius). KW - Biologie KW - Skorpion KW - Käfer Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-78118 ER - TY - JOUR A1 - Eckert, W. A. A1 - Franke, Werner W. A1 - Scheer, Ulrich T1 - Actinomycin D and the central granules in the nuclear pore complex: thin sectioning versus negative staining N2 - Thin section electron microscopy of Actinomycin D treated Tetrahymena cells and amphibian oocytes (Xenopus laevis, Triturus aZpestris) reveal no reduction in the central granules in the nuclear pore complexes. Possible reasons for the diversity between these results and earlier observations using negatively stained isolated nuclear envelopes from the same objects are discussed. The results clearly show that the presence of central granules within the nuclear pores does neither depend on nuclear RNA synthesis nor does indicate nucleocytoplasmic RNA transport. This conclusion leads to a reconsideration of the nature of the central granule. The functioning of the central granule of the nuclear pore complexes is further discussed in connection with recent studies on the ultrastructure of various types of cisternal pores. KW - Nuclear pores KW - Nucleocytoplasmic exchange KW - Actinomycin D KW - Tetrahymena KW - Amphibian oocytes Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-40636 ER - TY - JOUR A1 - Sebald, Walter A1 - Weiss, H. A1 - Jackl, G. T1 - Über die Abhängigkeit des Zusammenbaus der Cytochromoxidase von der Anwesenheit der Produkte der mitochondrialen Proteinsynthese T1 - Dependence of the structure of cytochrome oxidase on the presence of products from mitochondrial protein synthesis N2 - no abstract available KW - Physiologische Chemie Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-84192 ER - TY - JOUR A1 - Wilhelm, Gernot T1 - Eine neusumerische Urkunde zur Beopferung verstorbener Könige N2 - No abstract available. KW - Opfer KW - Sumerisch KW - Urkunde Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-87650 ER - TY - JOUR A1 - Ellgring, Johann Heinrich A1 - von Cranach, M. T1 - Processes of learning in the recognition of eye-signals N2 - In a learning experiment 10 Ss as receivers judged looking signals of a sender. Providing feedback about the real direction of gaze produced learning in the direction of an improvement of discrimination performance; the improvement was independent of visual acuity of receivers and was not. correlated to extraversion and neuroticism. Performance at the beginning was poorer and learning progress better for fixation points which were further away from the face. Results are discussed with reference to improving accuracy of observers on the variable 'looking behavior', important in studies on nonverbal communication. A pretraining of observers which allows explicit feedback about the real direction of gaze is proposed. N2 - In einem Lemexperiment beurteilten 10 Vpn als Empfiinger die Blicksignale einer Person, die als Sender fungierte. Die Diskriminierungsleistung der Empfanger verbesserte sich als Folge von feedback-Informationen. Die verbesserte Leistung war unabhangig von der Sehscharfe und korrelierte nicht mit Extraversion und Neurotizismus. Fur Zielpunkte des Blicks, die weiter vom Gesicht entfemt waren, war die Leistung am Anfang schlechter und die Leistungsverbesserung ausgepragter. Die Ergebnisse werden im Hinblick auf eine gro6ere Genauigkeit bei der Beobachtung der Variablen 'Blick-Verhalten' diskutiert, was fUr Untersuchungen liber non-verbales Verhalten wichtig ist. FUr Beobachter werden Trainings-Programme vorgeschlagen, bei denen RUckmeldungen liber die tatsachliche Blickrichtung des Senders vermittelt werden konnen. Resume Au cours d'une experience sur l'apprentissage, 10 sujets se comportant comme des recepteurs ont juge les signaux du regard d'un envoyeur. En fournissant de la retroaction quant a la vraie direction du regard on a obtenu un apprentissage dans le sens d'une amelioration de la performance discriminatoire: l'amelioration etait independante de l'acuite visuelle des recepteurs et n'6tait pas correlative a l'extraversion ou au caractere nevrose des sujets. Au debut la performance etait plus mediocre et le progres dans l'apprentissage meilleur dans le cas des points de fixation qui etaient les plus eloignes du visage. On discute des resultats en vue d'ameliorer la precision des observateurs sur la variable 'comportement du regard' important dans les etudes sur la communication nonverbale. On propose un entralnement prealable des observateurs, entrainement qui permet une retroaction explicite quant a la vraie direction du regard. Y1 - 1972 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-42055 ER - TY - JOUR A1 - Sebald, Walter A1 - Machleidt, W. A1 - Otto, J. T1 - Products of mitochondrial protein synthesis in Neurospora crassa. Determination of equimolar amounts of three products in cytochrome oxidase on the basis of amino-acid analysis N2 - Cytochrome oxidase isolated from N eurospora crassa was resolved into seven protein eomponents by eleetrophoresis in polyaerylamide gels eontaining sodium dodeeylsulfate. The apparent molecular weights were determined tobe 41000, 28500, 21000, 16000, 14000, 11500 and 10000 for the eomponents 1, 2, 3, 4, 5, 6, and 7, respectively. The components 1, 2 and 3 are synthesized on mitochondrial ribosomes as shown by the incorporation of radioactive amino aeids in the presenee of cyeloheximide. Amino-acidanalysis of the isolated components 1, 2 and 3 revealed a high content of apolar amino acids and a low eontent of basic amino aeids compared to an average amino-aeid eomposition of components 4-7. Components 1, 2 and 3 eontribute 27.9°/0, 18°/0 and 14.2°/0 to the whole eytoehrome oxidase protein. This was calculated from the contributions of the single eomponents to the totalleueine eontent of the enzyme and the leueine eontents (nmol leueine per mg protein) of the single eomponents as determined by amino-aeid analysis. Equimolar relations of the components 1, 2 and 3 are found by dividing the amounts of protein by their apparent molecular weights. A stoichiometry of 1:1:1 results assuming a minimal molecular weight of 150000 for the whole cytochrome oxidase protein. On the basis of the heme a content a molecular weight of about 70000 per heme group was determined, using an absorption coeffieient L1e605 (redueed minus oxidized) of 12 mM-1 cm-1• It is concluded that the smallest structural unit of eytochrome oxidase contains two heme groups. KW - Biochemie Y1 - 1973 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-62827 ER - TY - JOUR A1 - Weiss, H. A1 - Sebald, Walter A1 - Schwab, A. J. A1 - Kleinow, W. A1 - Lorenz, B. T1 - Contribution of mitochondrial and cytoplasmic protein synthesis to the formation of cytochrome b and cytochrome aa\(_3\) N2 - A cytochrome b preparation from Neurospora crassa mitochondria is found to consist of three polypeptides (apparent molecular weight 10 000, 11 000 and 32 000), a cytochrome aa3 preparation of six to seven polypeptides (apparent molecular weight 8 000, 11 000, 13 000, 18 000, 28 000 and 36 000). Selective incorporation of radioactive amino acids by eilher mitochondrial protein synthesis when the cytoplasmic one is blocked or by the cytoplasmic protein synthesis, when the mitochondrial one is blocked, indicates that one cytochrome b polypeptide (mw 32 000) and one to three cytochrome aa3 polypeptides (mw 36 000, 28 000 and 18 000) are mitochondrial translation products, the other cytochrome b and cytochrome aa3 polypeptides cytoplasmic translation products. The delayed appearance of labeling in the cytochrome b and cytochrome aa3 polypeptides compared to the average cell protein after a pulse of <~H leueine revealed that these polypeptides are derived from separate pools of precursor polypeptides. The pool sizes range from 2 p. cent to 25 p. cent of the amount of the corresponding polypeptide present in the cytochromes. The 32 000 molecular weight polypeptide of cytochrome band at least the 18 000 molecular weight polypeptide of cytochrome aa\(_3\) are mitochondrial translation products as well in the fungus Neurospora crassa as in the insect Locusta migratoria. So, despite the fact that the size of mitochondrial DNA and mitochondrial ribosomes is reduced in insects, the products have maintained their characteristics. KW - Biochemie Y1 - 1973 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-62835 ER - TY - JOUR A1 - Bast, K. A1 - Christl, Manfred A1 - Huisgen, R. A1 - Mack, W. A1 - Sustmann, R. T1 - Additionen des Benzonitriloxids an olefinische und acetylenische Dipolarophile N2 - No abstract available KW - Organische Chemie Y1 - 1973 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-57905 ER - TY - JOUR A1 - Christl, Manfred A1 - Warren, J. D. A1 - Hawkins, B. L. A1 - Roberts, J. D. T1 - \(^{13}\)C and \(^{15}\)N Nuclear Magnetic Resonance Spectroscopy of Nitrile Oxides and Related Reaction Products : Unexpected \(^{13}\)C and \(^{15}\)N Nuclear Magnetic Resonance Parameters of 2,4,6-Trimethylbenzonitrile Oxide N2 - No abstract available KW - Organische Chemie Y1 - 1973 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-57894 ER - TY - JOUR A1 - Bast, K. A1 - Christl, Manfred A1 - Huisgen, R. A1 - Sustmann, R. T1 - Zur Anlagerung des Benzonitriloxids an α,β-ungesättigte Carbonsäureester N2 - No abstract available KW - Organische Chemie Y1 - 1973 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-57912 ER - TY - JOUR A1 - Huisgen, R. A1 - Christl, Manfred T1 - Reaktionen der Knallsäure mit ungesättigten Verbindungen N2 - No abstract available KW - Organische Chemie Y1 - 1973 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-57927 ER - TY - JOUR A1 - Bast, K. A1 - Christl, Manfred A1 - Huisgen, R. A1 - Mack, W. T1 - Relative Dipolarophilen-Aktivitäten bei Cycloadditionen des Benzonitriloxids N2 - No abstract available KW - Organische Chemie Y1 - 1973 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-57935 ER - TY - JOUR A1 - Christl, Manfred A1 - Huisgen, R. T1 - Orientierungsphänomene bei der Cycloaddition aliphatischer und aromatischer Nitriloxide an α,β-ungesättigte Carbonester N2 - No abstract available KW - Organische Chemie Y1 - 1973 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-57942 ER - TY - JOUR A1 - Eyck, J. A1 - Burschka, Christian A1 - Bronger, W. T1 - Neue ternäre Sulfide des Silbers N2 - No abstract available Y1 - 1973 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-46606 ER - TY - JOUR A1 - Linsenmair, Karl Eduard T1 - Die Wüstenassel: Sozialverhalten und Lebensraum. N2 - Unter den Krebsen ist als größerer Gruppe allein den Landasseln (Oniscoidea) eine Eroberung des Festlandes gelungen. Ihre Anpassung an das Landleben blieb aber bislang recht mangelhaft, z. B. fehlt ein wirksamer Verdunstungsschutz. Wie zu erwarten, bewohnen daher die meisten Landasselarten feuchte Lebensstätten. Zu den wenigen Ausnahmen zählt die Wüstenassel Hemilepistus reaumuri, die nordafrikanische und kleinasiatische Halbwüsten - stellenweise auch echte Wüstengebiete - besiedelt. Es sind vor allem Verhaltensanpassungen, die den Wüstenasseln in diesen während vieler Monate trockenheißen Extrembiotopen nicht nur ein Oberleben erlauben, sondern sie darüber hinaus noch vielerorts zum erfolgreichsten Faunenelement machen. KW - Verhaltensökologie KW - Extrembiotop KW - individuelles Kennen KW - Monogamie KW - chemische Familienabzeichen Y1 - 1973 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-44493 ER - TY - JOUR A1 - Derksen, J. A1 - Trendelenburg, Michael F. A1 - Scheer, Ulrich A1 - Franke, Werner W. T1 - Spread chromosomal nucleoli of Chironomus salivary glands N2 - No abstract available Y1 - 1973 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-32209 ER - TY - JOUR A1 - Franke, Werner W. A1 - Trendelenburg, Michael F. A1 - Scheer, Ulrich T1 - Natural segregation of nucleolar components in the course of plant cell differentiation N2 - Segregation of the nucleolar components is described in the differentiated nucleus of the generative cell in the growing Clivia and Lilium pollen tubes. This finding of a natural nucleolar segregation is discussed against the background of current views of the correlations of nucleolar morphology and transcriptional activity. Y1 - 1973 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-32182 ER - TY - JOUR A1 - Scheer, Ulrich A1 - Trendelenburg, Michael F. A1 - Franke, Werner W. T1 - Transcription of ribosomal RNA cistrons: Correlation of morphological and biochemical data N2 - Electron microscopic spread preparations of oocyte nucleoli (lampbrush stage) of various amphibians are quantitatively evaluated and the length distributions of repeat-, matrix-, and spacer-units along the rRNA cistron containing axes are given. The correlation of the matrix unit data with the gel electrophoretic pattern of labelled nuclear RNA from the same oocytes is examined. The mean value of the matrix unit corresponds fairly well to a 2.6 million D peak of pre-rRNA but the distribution of both matrix units and labelled pre-rRNAs shows an asymmetrical heterogeneity indicating the existence of some larger primary transcription products of rDNA. Novel structural aspects are described in the spacer regions which suggest that transcription does also take place in DNP regions between the matrix units. A special "prelude piece" coding for approx. 0.5 million D of RNA is frequently visualized in the spacer segments at the beginning of a matrix unit. Possible artifacts resulting from the preparation, the relative congruence between the data obtained using both methods, and the functional meaning of the findings are discussed against the background of current concepts of structural organization and transcription products of nucleolar DNA. Y1 - 1973 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-32195 ER - TY - JOUR A1 - Scheer, Ulrich T1 - Nuclear pore flow rate of ribosomal RNA and chain growth rate of its precursor during oogenesis of Xenopus laevis N2 - The number of ribosomal RNA molecules which are transferred through an average nuclear pore complex per minute into the cytoplasm (nuclear pore flow rate, NPFR) during oocyte growth of Xenopus laevis is estimated. The NPFR calculations are based on determinations of the increase of cytoplasmic rRNA content during defined time intervals and of the total number of pore complexes in the respective oogenesis stages. In the mid-la mpbrush stage (500:"700 I'm oocyte diameter) the NPFR is maximal with 2.62 rRNA molecules/ pore/ minute. Then it decreases to zero at the end of oogenesis. The nucleocytoplasmic RNA f10w rates determined are compared with corresponding values of other cell types. The molecular weight of the rRNA precursor transcribed in the extrachromosomal nucleoli of Xenopus lampbrush stage oocytes is determined by acrylamide gel electrophoresis to be 2.5 x 10· daltons. From the temporal increase of cytoplasmic rRNA (3.8 I'g per oocyte in 38 days) and the known number of simultaneously growing precursor molecules in the nucleus the chain growth rate of the 40 S precursor RNA is estimated to be 34 nucleotides per second. Y1 - 1973 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-32178 ER - TY - JOUR A1 - Trendelenburg, Michael F. A1 - Scheer, Ulrich A1 - Franke, W. W. T1 - Structural organization of the transcription of ribosomal DNA in oocytes of the house cricket N2 - No abstract available Y1 - 1973 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-33113 ER - TY - GEN A1 - Decius, J. C. A1 - Becker, Charles R. A1 - Fredericks, W. J. T1 - Erratum: Force constants of the metaborate ion in alkali halides N2 - Erratum for the article: Decius, J. C. ; Becker, Charles R. ; Fredericks, W. J. : Force constants of the metaborate ion in alkali halides, In: THE JOURNAL OF CHEMICAL PHYSICS (1972), 56, 10, 5189-5190. N2 - Hierbei handelt es sich um eine Korrektur zum Artikel: Decius, J. C. ; Becker, Charles R. ; Fredericks, W. J. : Force constants of the metaborate ion in alkali halides, In: THE JOURNAL OF CHEMICAL PHYSICS (1972), 56, 10, 5189-5190. Y1 - 1973 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-37992 ER - TY - JOUR A1 - Brüntrup, Gisela A1 - Christl, Manfred T1 - Darstellung und Thermolyse der Hexamethyldewarbenzol-Cycloaddukte aromatischer Nitriloxide und des Diphenylnitrilimins N2 - No abstract available Y1 - 1973 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-30257 ER - TY - JOUR A1 - Christl, Manfred T1 - Cycloaddition an Benzvalen N2 - No abstract available Y1 - 1973 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-30217 ER -