@article{TreiberSchneider1981,
  author    = {Treiber, Bernhard and Schneider, Wolfgang},
  title     = {Schulisches Lernen im sozial{\"o}kologischen Kontext},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-87271},
  year      = {1981},
  abstract  = {No abstract available.},
  subject      = {Lernen},
  language  = {de}
}
@article{Wilhelm1981,
  author    = {Wilhelm, Gernot},
  title     = {Zusammenschl{\"u}sse von Nuzi-Texten},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-70323},
  year      = {1981},
  abstract  = {no Abstract available},
  subject      = {Nusi},
  language  = {de}
}
@article{WernerSebald1981,
  author    = {Werner, S. and Sebald, Werner},
  title     = {Immunological techniques for studies on the biogenesis of mitochondrial membrane proteins},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-82044},
  year      = {1981},
  abstract  = {no abstract available},
  subject      = {Biochemie},
  language  = {en}
}
@article{WieseTackeWannagat1981,
  author    = {Wiese, D. and Tacke, Reinhold and Wannagat, U.},
  title     = {9,9-Dimethyl-10-(3-dimethylaminopropyl)-9-silaacridan, ein Sila-Analogon des Dimetacrins, und strukturverwandte Verbindungen},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-63691},
  year      = {1981},
  abstract  = {Das Sila-Dimetacrin (3a), ein Sila-Analogon des Psychopharmakons Dimetacrin (2), und sein N,N-Diethylderivat 3 b sowie sein 3-Chlorderivat 3 c wurden, von den o-Halogenanilinen 4 a- c ausgehend, {\"u}ber die teilweise unbekannten Stufen 5 a- c bis 10a- d synthetisiert, in ihren Eigenschaften beschrieben und in ihrer Struktur {\"u}ber Elementaranalysen, \(^1\)H-NMR- und Massenspektren sichergestellt. Die Synthese des Zwischenproduktes Bis(2-bromphenyl)amin (9a) konnte optimiert werden.},
  subject      = {Anorganische Chemie},
  language  = {de}
}
@article{TackeStreckerNiedner1981,
  author    = {Tacke, Reinhold and Strecker, M. and Niedner, R.},
  title     = {Cholinesterase-hemmende Organophosphors{\"a}ureester und ihre Sila-Analoga},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-63689},
  year      = {1981},
  abstract  = {Die Organophosphors{\"a}ureester la-4a und ihre Sila-Analoga lb-4b des Typs R\(^1\)R\(^2\)P(O)( p-OC\(_6\)H\(_4\)ElMe\(_3\)) (EI = C, Si) wurden synthetisiert. Die Kohlenstoff-Verbindungen 1 a- 4a zeigen hinsichtlich ihrer Anticholinesterase-Aktivit{\"a}t die gleichen Struktur-Wirkungs-Beziehungen wie die Silicium-Verbindungen 1 b- 4 b. Letztere sind jeweils wirksamer als die entsprechenden C-Analoga.},
  subject      = {Anorganische Chemie},
  language  = {de}
}
@article{DaenikenLutzSchlatter1981,
  author    = {D{\"a}niken, A. von and Lutz, Werner K. and Schlatter, C.},
  title     = {Lack of covalent binding to rat liver DNA of the hypolipidemic drugs clofibrate and fenofibrate},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-61087},
  year      = {1981},
  abstract  = {\(^{14}\)C-Labelled clofibric acid and fenofibric acid were administered p.o. to 200 g male and female rats. After 10 h, liver nuclear DNA and protein were isolated and the radioactivity was determined. Binding to protein was clearly measurable whereas no binding to DNA could be detected from any drug. A comparison of the Iimit of detection of such DNA binding with well-known chemical carcinogens revealed that the known hepatocarcinogenicity of clofibrate cannot be based upon an initiating, DNA damaging, mode of action but must be due to other, nongenotoxic, mechanisms such as peroxisome proliferation, hepatomegaly, or cytotoxicity due to protein binding. The risk assessment in man and the interpretation of the carcinogenicity data for rodents are discussed.},
  subject      = {Toxikologie},
  language  = {en}
}
@article{DaenikenFriederichLutzetal.1981,
  author    = {D{\"a}niken, A. von and Friederich, U. and Lutz, Werner K. and Schlatter, C.},
  title     = {Tests for mutagenicity in Salmonella and covalent binding to DNA and protein in the rat of the riot control agent o-chlorobenzylidene malononitrile (CS)},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-61073},
  year      = {1981},
  abstract  = {The aim of this study was to determine whether o-chlorobenzylidene malononitrile ( CS) exhibits any genotoxic activity towards Salmonella or mammalian DNA in vivo. CS was synthesized with a [\(^{14}\)C]-label at the benzylic carbon atom. It was administered i. p. at a dose level of 13 mg/kg (1 mCi/kg) to young adult male rats. Liverand kidney DNA was isolated after 8, 25, and 75 h. The radioactivity was at (liver, 8 and 75 h) or below (all other samples) the limit of detection of 3 dpm. Therefore, a possible binding of CS to DNA is at least 10\(^5\) times lower than that of the strong hepatocarcinogen aflatoxin B1, and 4,000 times lower than that of vinyl chloride. In contrast to this lack of DNA binding, but in agreement with the chemical reactivity of CS, a binding to nuclear proteins could be detected with specific activities ranging between 50 and 121 dpm/mg for liver and between 3 and 41 dpm/mg for kidney. Protein binding could well be responsible for its pronounced cytotoxic effects. Cs was also tested in the Ames Salmonella/microsome assay. Strains TA 1535, TA 1537, TA 1538, TA 98, and TA 100 were used with or without pre-incubation. Only with strain TA 100 and only without pre-incubation, a doubling of the number of revertants was detectable at the highest dose Ievels used, 1,000 and 2,000 !lg CS per plate. With pre-incubation of TA 100 with CS, a slight increase of the number of revertants was seen at 100 and 500 !lg per plate, and a subsequent fall below control values at 1,000 J.tg. A check for the number of surviving bacteria revealed a strong bacteriotoxicity of the higher doses of es so that the calculated mutation frequencies, i.e., the oumber of revertants per number of surviving bacteria, increased with doses up to 500 !J.g. This toxicity could be counteracted in part by the addition of increasing amounts of rat liver microsomes. In the view of these results, and taking into account the rare and low exposure of man, it is concluded that CS will not create a risk for the induction of point mutations or of carcinogenic processes mediated by DNA binding.},
  subject      = {Toxikologie},
  language  = {en}
}
@article{ChristlBrunn1981,
  author    = {Christl, Manfred and Brunn, E.},
  title     = {Tetracyclo[4.1.0.0\(^{2,4}\).0\(^{3,5}\)]heptane aus 7,8-Diazatetracyclo[4.3.0.0\(^{2,4}\).0\(^{3,5}\)]non-7-enen},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-58094},
  year      = {1981},
  abstract  = {No abstract available},
  subject      = {Organische Chemie},
  language  = {de}
}
@article{Heinsen1981,
  author    = {Heinsen, Helmut},
  title     = {Regional differences in the distribution of lipofuscin in Purkinje cell perikarya : a quantitative Pigmentarchitectonic study of the Cerebellar Cortexof Senile Albino Rats},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-59904},
  year      = {1981},
  abstract  = {The distribution of lipofuscin in the perikarya of Purkin je cells of vermal and hemispheric lobules has been determined quantitatively in 7 rats, 30-38 months old, by the point-counting method. On the basis of morphologically and statistically significant differences a pigmentarchitectonics of the cerebellar cortex is established. The Purkinje cells of lobule VIa (Larsell 1952) are extremely lipofuscin-rich. The Purkinje cells of the hemispheres, lobules V, Vlb + c and VII contain considerable amounts of a finely granular lipofuscin, the Purkinje cells of lobules I-III and VIII- IXa a globular type of lipofuscin. The Purkinje cells of sublobule XI d c and X are lipofuscin-poor cells. Three types of lipofuscin ha ve been identified in the light microscope.},
  subject      = {Medizin},
  language  = {en}
}
@article{Siren1981,
  author    = {Sir{\´e}n, Anna-Leena},
  title     = {Central cardiovascular and thermal effects of prostacyclin in rats},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-47943},
  year      = {1981},
  abstract  = {Prostacyclin (PGI2) induced a dose-dependent decrease in blood pressure with slight increases in heart rate and body temperature, when administered at the doses of 0.1-100 ~g into the lateral cerebral ventricle (i.c.v.) of the urethane-anaesthetised rat. When the same doses were administered intravenously, both the blood pressure and heart rate decreased. Central pretreatment wib~ sodiurn meclofenamate (1 mg/rat i.c.v.) antagonised the central hypotensive effect of PGI2 but i.c.v. pretreatrnent of the rats with indomethacin (1 mg/rat) failed to affect the PGI 2-induced hypotension. Central pretreatment with two histamine H2-receptor antagonists, cimetidine (500 ~g/rat i.c.v.) or metiamide (488 ~g/rat i.c.v.), antagonised the blood pressure lowering effect of 0.1 ~g dose of PGI2 but failed to affect the hypotension induced by higher PGI2 doses. Therefore the main central hypotensive effect of PGI2 seems not to be associated with the stimulation of histamine H2 -receptors in the brain. The hypotensive effect of i.c.v. administered PGI2 appears to be due to an action upon the central nervous system rather than to a leakage into the peripheral circulation. This assurnption is supported by the fact that sodiurn meclofenamate i.c.v. antagonised the effect of PGI 2. In addition, the chronotropic response to i.c.v. PGI2 was opposite to that induced by intravenous administration. The results also suggest that there may be differences in the mode of action between sodiurn meclofenamate and indomethacin.},
  subject      = {Prostaglandine},
  language  = {en}
}
@article{BurschkaStroppelJutzi1981,
  author    = {Burschka, Christian and Stroppel, Klaus and Jutzi, Peter},
  title     = {Die Struktur von μ-Dibromgermandiyl-bis(pentacarbonylwolfram)(W-W)},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-31852},
  year      = {1981},
  abstract  = {No abstract available},
  subject      = {Chemie},
  language  = {de}
}
@article{Wilhelm1981,
  author    = {Wilhelm, Gernot},
  title     = {Die Siegel des K{\"o}nigs Itḫi-teššup von Arrapḫa},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-51174},
  year      = {1981},
  abstract  = {No abstract available},
  subject      = {Orientalistik},
  language  = {de}
}
@article{Schneider1981,
  author    = {Schneider, Wolfgang},
  title     = {Rechtschreibdiagnose in der Grundschule - Theoretische und empirische Analysen zur spezifischen Problematik},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-50535},
  year      = {1981},
  abstract  = {Theoretische Analysen zum Problem des Recht-Schreibens weisen darauf hin, daß weniger Intelligenzmerkmale als vielmehr Ged{\"a}chtnis'eistungen bei dem Erwerb der Schriftsprache von Bedeutung sind. Daraus folgt, daß f{\"u}r die Pr{\"u}fw{\"o}rter in normierten Rechtschreibtests zumindest hinreichende Vorkommensfrequenz gew{\"a}hrleistet sein sollte. Diese Frage wird in der vorliegenden Untersuchung am Beispiel des Allgemeinen Schulleistungstests {\"u}berpr{\"u}ft: f{\"u}r die ausgew{\"a}hlten Klassenstufen kann gezeigt INerden, daß die Vorkommensh{\"a}ufigkeit der Pr{\"u}fW{\"O}fter nicht ausreicht und damit wenig geeignet ist, um die tats{\"a}chliche Rechtschreibfertigkeit zu erfassen. Der Vergleich mit mehreren eng am Curriculum orientierten Diktatproben kann gleichzeitig die Schwierigkeiten verdeutlichen, die dann entstehen, wenn zuverl{\"a}ssige Bestimmungen der individuellen Rechtschreibkompetenz vorgenommen werden sollen.},
  subject      = {Psychologie},
  language  = {de}
}
@article{JutziKarlBurschka1981,
  author    = {Jutzi, Peter and Karl, Alfons and Burschka, Christian},
  title     = {Synthese, Reaktionen und Struktur von Tricarbonyl(1R,1R',2,3,4,5-Tetraphenyl-1-Germacyclopentadien) Eisen-Komplexen},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-46723},
  year      = {1981},
  abstract  = {Die Tricarbonyl(germacy~lopentadien)eisen-Komplexe VI-X werden durch Umsetzung der Germacyclopentadiene I-V niit Fe(CO)\(_5\) dargestellt. In l,l-Dialkyl- und -Diaryl-l-gemiacyclopentadien-Komplexen kann die Ge-C( exo )-Bindung durch verschiedene Elementhaloge~de gespalten werden, wobei die I-Halogen-l-germacyclopentadien-Komplexe XII, XIII, XV-XVII gebildet werden. Eine Entkomplexierung des Komplexes XI tritt bei der Reaktion mit Me\(_3\)NO oder TiCl\(_4\) ein. Das Tricarbonyl(l-chlor-l-germacyclopentadien)eisen XII reagiert mit AgF, NaJ, NaOMe und LiAIH\(_4\) zu den Komplexen XIXXXII. Das German XXII kann mit CCl\(_4)\ in XII {\"u}berf{\"u}hrt werden. Die Tricarbonyleisen-Komplexe XI, XII, XVI, XVII und XIX reagieren photochemisch mit Trimethylphosphan zu den Dicarbonyl(trimethylphosphan)-Komplexen XXIII-XXVII. Die Kristallstruktur des Tricarbonyl(l-exo-fluor-1-endo-methyl-2,3,4,5-tetraphenyl-1-germacyclopentadien)eisen wird beschrieben.},
  subject      = {Chemie},
  language  = {de}
}
@article{DeltzMuellerHermelinkUlrichsetal.1981,
  author    = {Deltz, E. and M{\"u}ller-Hermelink, HK and Ulrichs, Karin and Thiede, A. and M{\"u}ller-Ruchholtz, W.},
  title     = {Development of graft-versus-host reaction in various target organs after small intestine transplantation},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-45459},
  year      = {1981},
  abstract  = {The GVHRIL foHowing transplantation of small intestine are different from those found after bone marrow transplantation or spleen cell injections in that they show a remarka ble, significant prevalence of lesions within the intestinal mucosa. These findings are consistent with the observation that jntestinal lymphocytes newly formed in mesenteric lymph nodes predominantly home in on the intestine again.\& The degree of histologic alteration within different tissues indicates that the graft and the host may survive the lesions of the lymphatic tissues, whereas the severe intestinal lesions following GVHR may easily cause death of the recipient. With regard to clinical sman bowel transplantation two statements can be made: (l) GVHRIL play a significant role in small bowel trans~ plantation. (2) To minimize their biologic importance, a selective elimination of the graft's Jymph nodes by irradiation or surgical resection should be considered in view of the remarkable difference between GVHRIL in lymph nodes and in the graft's intestinal wall itself.},
  subject      = {Chirurgie},
  language  = {en}
}
@article{ChristlLanzendoerferFreund1981,
  author    = {Christl, Manfred and Lanzend{\"o}rfer, Ulrike and Freund, Silke},
  title     = {Olefinadditionen an 2,5-Diphenyl-1,3,4-oxadiazin-6-on},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-41525},
  year      = {1981},
  abstract  = {No abstract available},
  language  = {de}
}
@article{BurschkaSchenk1981,
  author    = {Burschka, Christian and Schenk, W. A.},
  title     = {Die Kristallstruktur von Tetramethylammonium-Chloropentacarbonylwolframat},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-31417},
  year      = {1981},
  abstract  = {Die Struktur von Tetramethylammoniumchloropentacarbonylwolframat wurde rontgenographisch aue Einkristalldaten bestimmt. Die Verbindung kristallisiert mit vier Formeleinheiten in del' monoklinen Elementarzelle (Raumgruppe P2Jc) folgender Dimensionen: a = 1111,3(4) pm, b = 1110,3(4) pm, c = 1204,1(3) pm, f3 = 99,63(3)°, V = 1464,8 . 106 pm' (R = 0,028). Das Anion besitzt annahernd C4v·Symmetrie mit d(W -C(ois» = 203 pm, d(WC( trans» = 197 pm, d(W-Cl) = 256,6 pm. Zwischen Kation undAnion treten keine ungewohnliche Kontakte auf.},
  subject      = {Chemie},
  language  = {de}
}
@article{AlbertBerningBurschkaetal.1981,
  author    = {Albert, Bernhard and Berning, Wilfried and Burschka, Christian and H{\"u}nig, Siegfried and Martin, Hans-Dieter and Prokschy, Frank,},
  title     = {Transanulare Wechselwirkung des Azo-Chromophors inisodrinanalogen Systemen},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-31328},
  year      = {1981},
  abstract  = {No abstract available},
  subject      = {Chemie},
  language  = {de}
}
@article{ScheerSommerville1981,
  author    = {Scheer, Ulrich and Sommerville, J.},
  title     = {Structural organization of nascent transcripts and hnRNA molecules in amphibian oocytes},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-39765},
  year      = {1981},
  abstract  = {Comparisons ofrelative lengths oflampbrush loops, nascent RNP transcripts and hnRNA molecules from oocytes of amphibia with different C-values show that there is an increasing trend in loop, and transcriptional unit, length with increase in genome size but no increasing trend with respect to RN A contour length.The formation of duplex regions and circles in RNP fibrils indicates that RNA processing may occur within the nascent fibrils. The hnRNA molecules from oocytes of the various amphibia readily form intermolecular duplex structures. These complementary sequences have a low kinetic complexity and are transcribed from highly repetitive sequences distributed throughout the genome. Their possible function is considered.},
  language  = {en}
}
@article{Scheer1981,
  author    = {Scheer, Ulrich},
  title     = {Identification of a novel class of tandemly repeated genes transcribed on lampbrush chromosomes of Pleurodeles waltlii},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-33153},
  year      = {1981},
  abstract  = {Electron microscope preparations of lampbrush chromosomes from oocytes of Pleurodeles waltl;; have revealed a new class of tandemly repeated genes. These genes are highly active, as judged by the close spacing of nascent transcripts. They occur in clusters of >100 copies and are transcribed in units containing roughly 940 base pairs of DNA that are separated by nontranscribed spacers of an estimated DNA content of 2,410 base pairs. The size and the pattern of arrangement of these transcription units can not be correlated with any of the repetitious genes so far described.},
  language  = {en}
}