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"Verhafte ihn!"
(1990)
No abstract available.
Die erstmalige Synthese der (Thioacetoxy-S-methyl)diorganylsilane (CH\(_3\))\(_2\)Si(H)CH\(_2\)SC(O)CH\(_3\) (9) und (C\(_6\)H\(_5\))\(_2\)Si(H)CH\(_2\)SC(O)CH\(_3\) (10) und der (Mercaptomethyl) diorganylsilane (CH\(_3\))\(_2\)Si(H)CH\(_2\)SH (11) und (C\(_6\)H\(_5\))\(_2\)Si(H)CH\(_2\)SH (12) wird beschrieben. Während sich die Silane 9 und 10 leicht handhaben lassen, neigen die strukturanalogen (Hydroxymethyl)diorganylsilane (CH\(_3\))\(_2\)Si(H)CH\(_2\)OH (1) und (C\(_6\)H\(_5\))\(_2\)Si(H)CH\(_2\)OH (2) zu einer basenkatalysierten Zersetzung (Bildung oligomerer (polymerer) Alkoxysilane und Wasserstoff). Im Gegensatz zu den thermisch labilen (Acetoxymethyl)diorganylsilanen (CH\(_3\))\(_2\)Si(H)CH\(_2\)OC(O)CH\(_3\) (3) und (C\(_6\)H\(_5\))\(_2\)Si(H)CH\(_2\)OC(O)CH\(_3\) (4) (--+ Umlagerung zu den entsprechenden Acetoxy(methyl) diorganylsilanen (CH\(_3\)) \(_3\)SiOC(O)CH\(_3\) (5) und CH\(_3\)(C\(_6\)H\(_5\))\(_2\)SiOC(O)CH\(_3\) {6)) sind die Thio-Analoga 9 und 10 thermisch stabil (I-molare Lösungen in C\(_6\)D\(_6\), 30 h bei 180 o C).
No abstract available
We have developed a reliable and sensitive immunohistochemical staining technique which allows the simultaneous demonstration of two different antigens expressed in or on the same cell (referred to as mixed labeling), together with the evaluation of the general histopathological appearance of the tissue. The staining procedure combines a three-step (streptavidin-biotin) immunogold-silver staining (IGSS) with a three-step immunoenzymatic labeling. For this purpose, we investigated the compatibility ofIGSS with various substrates of peroxidase or alkaline phosphatase (AP). Highly reliable and discernible mixed labeling was achieved only after iniriallabeling with IGSS followed by AP labeling using the substrates naphthol AS-MX phosphate/Fast Blue or naphthol AS-HI phosphate/New Fuchsin, respectively. To ensure utmost specificity, we applied FlTC-conjugated mouse monoclonal antibodies and rabbit anti-FlTC immunoglobulins visualized by AP-labeled immunoglobulins and the respective substrate in a final step. This novel approach provides an excellent means for demonstration of immunocompetent cells and unequivocal determination of the percentage of specific cell subsets in infiltrated tissue. The advantages of this method, as compared with double immunofluorescence or double immunoenzymatic labeling, were investigated and are discussed. (J Histochem Cytochem 38:307-313, 1990)
Potential energy and spectroscopic constants for the X\(^2 \sum^+ _\mu\) ground state of a;, were calculated by configuration-interaction (Cl) methods, using large basis sets with polarization and diffuse functions. From these CI wavefunctions, the isotropic (a\(_{iso}\)) and dipolar (A\(_{dip}\)) components of the hyperfine coupling constant were obtained. The effects of various s, p basis sets, polarization and diffuse functions, as well as the influence of reference configurations and configuration selection thresholds were investigated. The best values obtained are 35·31 G for a\(_{iso}\) and 29·440 for A\(_{dip}\)• tobe compared with experimental values of 37 ± 1 G and 32 ± 1 G, respectively. It is shown that the contributions to a1so of the K and L shells are opposite in sign, differing by about 4 G. Upon vibrational averaging, both a\(_{iso}\) and A\(_{dip}\) move towards smaller values as v increases. An adiabatic electron affinity of 2·46eV was obtained for CL\(_2\) , and a vertical electron detachment energy of 3·71 eV for Cl;.
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Introduction Although symptomatic therapy is available for Parkinson's disease, patients and relatives are faced with continuous severe psychological problems. These psychological problems include: 1. lack of emotional expression, 2. bradephrenia, 3. depression, 4. lack of motivation,S. social anxiety, 6. stress induced increase of symptoms. The first four of these may be at least in part due to the dopamine deficiency. However, even as part of the primary symptoms they have social and communicative impact for patients and relatives. Social anxiety and stress induced increase of symptoms on the other hand clearly result from an interaction of somatic and psychological factors. Social anxiety mainly develops in Parkinson I s disease as an indirect consequence of the motor symptoms. Patients are afraid of being negatively evaluated in the public, of receiving negative comments etc. Thus r social withdrawal increases and the improvement of neurological symptoms following drug treatment may not be fully exploited on the psychosocial level. Stress induced increase of motor symptoms is a commonly observed phenomenon in Parkinson's disease. Even minor stressors, mainly social in nature, can have extreme effects and may elicit or increase tremor or rigidity. A patient can be well in one moment, but unable to move in the next when being aware that he has to leave the house in an hour. Given this situation, patients and relatives have to develop strategies fo~ an emotional balance in the presence of a continuous confrontation with the direct and indirect consequences of the disease. A precondition for developing new psychologically based strategies is an optimwn medical treatment. The integrated approach for neurological and psychological support has the following goals: 1. improving medical treatment for the individual patient, 2. improving psychological coping and psychosocial adaptation for patients and relatives, and 3. evaluating and improving medical and psychological therapy. CONCLUSION Psychological intervention can provide considerable help for a substantial part of Parkinson patients. The main target is coping with stressful social situations. Relaxation and cognitive restructuring together with situational behavioral analysis and training of social skills specifically adapted to the disease are" the main strategies. Various problems remain open at the moment, like the maintenance of motivation which is especially critical for Parkinson patients. Parkins on 's disease is a neurological disease with a known pathological substrate and a therapy which is effective at least for several years on a symptomatic level. The symptoms are tightly connected with psychological emotional and cognitive processes. Moreover, patients and relatives have to cope with symptoms which strongly influence social interaction. And they have to cope together with this situation over a period of ten or twenty years. Thus not only for the patient but also for the health of the relatives, psychological aid is urgently needed. We suggest to integrate psychological approach into the neurological diagnosis and treatment.
We used a sensitive silver degeneration staining method to study the effects of insertion of microdialysis probes in rat dorsal hippocampus and neocortex. Nine animals were sacrificed 24 h, 3 days or 7 days after implantation of dialysis tubing. Although mild neuronal cell death and small petechial hemorrhages were seen in elose proximity to the implantation site, the striking finding was the presence of degenerating axons both adjacent to the implantation site and in remote sites such as the corpus callosum and contralateral hippocampus. The observed changes could alter brain function near or remote from the implantation site and should be considered in analysis of dialysis experiments.
Die Literaturstudie zum Thema "Auswirkungen geringer Alkoholmengen auf Fahrverhalten und Verkehrssicherheit• (FP 8707) wählte aus rund 100 000 geprüften Literaturangaben, nach strengen methodischen Kriterien , 1 126 empirische Befunde im Bereich unter 0,84 Promille BAK aus. Es zeigt sich , daß ab 0,3 Promille BAK nachweisbare Wirkungen des Alkohols vorhanden sind. Bis zu 0,5 Promille sind diese noch stark von den untersuchten Personen und Situationen abhängig, so daß dieser Bereich nicht maßnahmenrelevant erscheint. Bei Konzentrationen über 0 ,5 Promille hat Alkohol deutliche Wirkungen in Verkehrssituationen, die ein hohes Maß an Kontrollprozessen verlangen. Solche sind gefordert, wenn das Fahren an rasch wechselnde, unvorhersehbare Situationen angepaßt werden muß oder wenn sich mehrere Anforderungen gleichzeitig stellen . Ebenfalls deutliche Wirkungen sind in Verkehrssituationen zu erwarten. die einen sozialen Aufforderungsgehalt haben, insbesondere solche mit aggressionsauslösenden Reizen (etwa Bedrängen , Überholtwerden, Vorfahrtsfragen usw). Geringere Wirkungen zeigen sich in Standardsituationen wie Abbiegen, Überholen usw. Fast keine Wirkungen zeigen sich in nicht beanspruchenden Situationen , wo eine leichte Beeinträchtigung nicht leistungsmindernd ins Gewicht fällt oder durch eine Erhöhung der Anstrengung kompensiert werden kann. Die gleiche BAK ist umso gefährlicher, je weniger der Fahrer über automatisierte Handlungen verfügen kann, je mehr er auf Kontrollprozesse angewiesen ist. Dies ist der Fall vor allem bei wenig geübten Fahrern, regelhaft bei Fahranfängern. Aber auch älteren Verkehrsteilnehmer mit ihren größeren Schwierigkeiten bei Kontrollprozessen sind in besonderem Maße betroffen. Legt man die in§ 24a StVG für den Grenzwert von 0 ,8 ausgesprochene Wirkungsvermutung zugrunde, zeigt das Review eindeutig , daß eine BAK über 0,5 Promille in vielen Verkehrssituationen (nicht in allen ) und/oder bei zahlenmäßig großen Risikopopulationen (nicht bei allen) die Leistungen so deutlich mindert, daß von einer abstrakten Gefährdung des Straßenverkehrs auszugehen ist. Damit ist eine Absenkung des Gefahrengrenzwerts auf 0,5 Promille zu befürworten .
Pandinus imperator is a forest dweller of tropical West Africa. In the field, lobserved aggregations of up to 15 individuals. In the laboratory, mixed age groups of related and also unrelated animals lived jointly in terraria rarely showing within-group aggression or cannibalism. Brood-caring behavior of the mother influenced growth rate and survival probability of the young. With birth, mothers became very aggressive. To study family cohesion in Pandinus, experiments with family groups were conducted. Siblings aggregated around their mother. In choice experiments with two family groups, mothers were placed in enclosures that only the young were able to enter or to leave. Second instars significantly preferred the enclosure containing their own mother. Aggression among unrelated young of the same age was not observed. Feeding experiments studied the possible advantages of long-Iasting group living with regard to enhanced success in prey capture and its effect on growth of the young. Even groups of second instars were unable to subdue large prey on their own. Sibling groups with their mother removed suffered high mortality due to starvation and cannibalism compared to groups with mothers present. Here, young grew significantly faster: they shared the prey that only the mother was able to kill and dismember. Pandinus imperator has to be considered an intermediate subsocial scorpion.
No abstract available