166,251 research outputs found
Endo-permutation modules as sources of simple modules.
No full textThe source of a simple -module, for a finite -solvable group and an algebraically closed field of prime characteristic , is an endo-permutation module (see~\cite{Pu1} or~\cite{Th}). L. Puig has proved, more precisely, that this source must be isomorphic to the cap of an endo-permutation module of the form \bigotimes_{Q/R\in\cal S}\Ten^P_Q\Inf^Q_{Q/R}(M_{Q/R}), where is an indecomposable torsion endo-trivial module with vertex , and is a set of cyclic, quaternion and semi-dihedral sections of the vertex of the simple -module. At present, it is conjectured that, if the source of a simple module is an endo-permutation module, then it should have this shape. In this paper, we are going to give a method that allow us to realize explicitly the cap of any such indecomposable module as the source of a simple module for a finite -nilpotent group
akira-endo/monkeypox_heavytail: Heavy-tailed sexual contact networks and the epidemiology of monkeypox outbreak in non-endemic regions
No full textCode accompanying Endo et al. "Heavy-tailed sexual contact networks and the epidemiology of monkeypox outbreak in non-endemic regions"
Occurrence and properties of bacterial pectate lyases
No full textSome 100 pectolytic bacteria belonging to different genera and species, were obtained by isolation from vegetables and by screening of culture collections. The crude enzyme preparations of 19 of these strains were typed by mutual comparison. Differences in the composition of five commercial fungal 'pectinase' preparations were also studied. Purified endo pectate lyase of Arthrobacter which was studied in detail, appeared to attack pectate far 'less randomly', than endo pectate lyases of Bacillus polymyxa or Pseudomonas. The best substrates for pectate lyases were not pectates but 21 to 44% esterified pectins. A new method for the determination of the number average degree of polymerization of pectic substances was introduced. The literature on pectolytic enzymes was reviewed
The Dade group of a metacyclic -group.
No full textThe Dade group of a finite -group , formed by equivalence classes of endo-permutation modules, is a finitely generated abelian group. Its torsion-free rank equals the number of conjugacy classes of non-cyclic subgroups of and it is conjectured that every non-trivial element of its torsion subgroup has order , (or also , in case ). The group is closely related to the injectivity of the restriction map \Res:T(P)\rightarrow\prod_E T(E) where runs over elementary abelian subgroups of and denotes the group of equivalence classes of endo-trivial modules, which is still unknown for (almost) extra-special groups ( odd). As metacyclic -groups have no (almost) extra-special section, we can verify the above conjecture in this case. Finally, we compute the whole Dade group of a metacyclic -group
Narcissistic attitudes among scientists
No full textCEL NAUKOWY: Celem artykułu jest wskazanie przyczyn postaw narcystycznych obserwowanych u pracowników nauki. Autorka zwraca uwagę na źródła narcyzmu zarówno o charakterze endogennym, jak i egzogennym. PROBLEM I METODY BADAWCZE: Problematyka badawcza zaprezentowana w niniejszym artykule ma charakter eksploracyjny i sprowadza się do próby udzielenia odpowiedzi na pytanie: które z czynników o charakterze endo- i egzogennym odgrywają dominującą rolę w procesie kształtowania się postaw narcystycznych wśród nauczycieli akademickich? Metodę badawczą oparto na studiach literaturowych, wykorzystując eksplorację, deskrypcję, ale i prezentując próby wyjaśnienia analizowanego zjawiska. PROCES WYWODU: Artykuł składa się z pięciu zasadniczych części. W pierwszej z nich omówiono, na czym polega specyfika właściwej dla dydaktyki przemocy symbolicznej, kolejno przedstawiono kryteria diagnozowania narcyzmu, mechanizmy utowarowienia pracowników nauki. Zwrócono również uwagę na rozpoznawalność traktowaną jako wskaźnik pozycji naukowej oraz procesy związane z omnipotencją mistrza. WYNIKI ANALIZY NAUKOWEJ: Autorka wskazuje, że w przypadku narcyzmu obserwowalnego wśród pracowników nauki mamy do czynienia z szeregiem czynników o charakterze endo- i egogennym, które determinują jego występowanie u akademików. WNIOSKI, INNOWACJE, REKOMENDACJE: Przedstawione zjawisko jest właściwie nieobecne w polskim dyskursie naukowym dotyczącym sfery nauki. Pewne próby demaskowania pracy akademików odnajdziemy u Pierre’a Bourdieu, jednakże utrzymane są one w kontekście przemocy symbolicznej, a nie narcyzmu, który w tej optyce stanowi novum.PURPOSE OF RESEARCH: The purpose of this article is to identify the causes of narcissistic attitudes observable among academics. The author draws attention to sourcesof the both types of the narcissism : an endogenous and an exogenous.PROBLEM AND RESEARCH METHODS: Research issues presented in this article are exploratory. They come to attempt to answer the question: Which endogenous and exogenous factors play a dominant role in shaping the narcissistic attitudes of academic teachers? The research method is based on literature studies, nut also based on exploration, description, and also attempts to explain the analyzed phenomenon.REASONING PROCESS: The article consists of five main parts. The first of these presents the specificity symbolic violence typical for the didactics. Next presents the criteria for the diagnosis of narcissism and mechanisms of commodification of scientists. Attention was also drawn to the recognition treated as an indicator of the scientific position and the processes associated with the omnipotence of the master.SCIENTIFIC ANALYSIS RESULTS: The author indicates that in the case of narcissism observable among scientists we have to deal with a number of factors both endo- and egogenous that determine its prevalence among scientists.CONCLUSIONS, INNOVATIONS, RECOMMENDATIONS: Presented phenomenon is practically absent in the Polish scientific discourse concerning the sphere of science. Some attempts to unmask the work of academics can be found at Pierre Bourdieu's, but they ar
Prof. Th. W. Adorno and the author Hans Erich Nossack.
No full textProf. Th. W. Adorno and the author Hans Erich Nossack at a reception of Insel Verlag, Buchmesse Frankfurt 1966LB
Estudo do meio e das condições de cultivo para produção de endo-inulinase microbiana /
No full textDissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico.O presente trabalho teve como principais objetivos investigar o desempenho de microrganismos potencialmente produtores de endo-inulinase e estudar as condições de produção desta enzima. Dezesseis linhagens fúngicas e três linhagens bacterianas foram avaliadas quanto a produção de endo-inulinase. Os resultados indicaram o microrganismo isolado Paenibacillus sp. CDB 003 como sendo o melhor produtor de endo-inulinase. A influência das concentrações de inulina, de extrato de levedura, da concentração de sulfato de amônio, de ácido succínico, do íon fosfato , assim como da freqüência de agitação, do suprimento de oxigênio (KLa), da temperatura de cultivo e do pH do meio sobre a produção de endo-inulinase foi avaliada. Sendo a inulina comercial um substrato de alto custo para a produção industrial de endo-inulinase, o comportamento da cepa Paenibacillus sp. CDB 003 foi investigado em meio contendo extrato de chicória como fonte natural de inulina. Os resultados encontrados foram similares àqueles obtidos com a inulina comercial. Algumas características da enzima, tais como, temperatura ótima de incubação, estabilidade com o tempo e com a temperatura, valores de Km e Vmax e a correlação entre o tempo de hidrólise da inulina e a formação de açúcares redutores também foram avaliados
An Efficient Method for Cyclopentene Annulation onto α,β-Unsaturated Ketones: W(CO)<sub>5</sub>(L)-Catalyzed 5-Endo-Dig Cyclization of 6-Siloxy-5-en-1-ynes
No full textA highly efficient method for the cyclopentene annulation onto α,β-unsaturated ketones is described. Indium-mediated 1,4-propargylation
onto α,β-unsaturated ketones in the presence of tert-butyldimethylsilyl triflate and dimethyl sulfide gives the 6-siloxy-5-en-1-yne derivatives,
which undergo W(CO)5(L)-catalyzed 5-endo-dig cyclization to give the corresponding cyclopentene derivatives in good yield
Síntese e estudo de correlação estrutura-atividade de benzenossulfonilaziridinas
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciênicias Físicas e Matemáticas. Programa de Pós-Graduação em Química.Os derivados imídicos são conhecidos há várias décadas e têm sido amplamente utilizados como agentes medicinais no tratamento de muitas enfermidades, entre elas: artrite, tuberculose, ansiedade, esquizofrenia, eplepsia, bem como no tratamento de várias infecções.1-3 Na busca de análogos estruturais de imidas cíclicas de interesse terapêutico o presente trabalho teve por objetivo a síntese e caracterização dos isômeros exo-endo e endo-endo de uma série de sulfonilaziridinas, ainda não descritas na literatura, obtidas a partir da modificação molecular da succinimida. As sulfonilaziridinas foram obtidas através de uma reação, do tipo 1,3-dipolar, entre sulfonilazidas e diferentes succinimidas. As quais foram preparadas previamente através da reação de Diels-Alder entre N-fenilmaleimidas substituídas e ciclopentadieno. Os substituintes utilizados foram H, 4-Cl, 3,4-diCl, 4-CH3, 4-OCH3, 4-Br e 4-NO2. Através do teste de natação forçada (TNF), um modelo utilizado para o estudo da depressão endógena, realizado com camundongos suíços machos, testou-se uma série de sulfonilaziridinas com estereoquímica endo-endo e com os substituintes H, 4-Cl, 3,4-diCl, 4-CH3 e 4-OCH3 no anel benzênico. Constatou-se que os compostos com substituinte H e 4-Cl apresentaram atividade antidepressiva estatisticamente significativa. Realizou-se ainda neste trabalho, um estudo de correlação estrutura-atividade seguindo o método manual de Topliss,4 através do qual, a partir dos resultados da atividade biológica da série inicial com os cinco compostos, citada acima, pôde-se predizer uma nova série a ser sintetizada com o objetivo de aumentar a potência da atividade farmacológica
Modul Endo-Prima Lemah
No full textPada skripsi ini dibahas tentang perluasan dari modul endo-prima yang disebut modul endo-prima lemah. Misalka
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