广义混合变分不等式解的存在性与迭代算法

研究了一类广义混合变分不等式;利用η-次微分和η-近似映象这两个概念讨论了这种广义混合变分不等式解的存在性;并结合分裂技巧和自适应迭代技巧提出了一个求解这种广义混合变分不等式的显式迭代算法;最后证明了该算法在适当的条件下收敛.     

陶瓷超低温釉纳米助熔粘接剂的研究3

在陶瓷超低温釉纳米助熔粘接剂配方研究的基础上研究了粘接剂操作性能,釉浆流动性、釉重随釉浆含水量及粘接剂用量的变化关系;研究了制得成品瓷的铅镉溶出性能.采用透射电子显微镜、X射线衍射物相分析,氮气吸附对纳米助熔剂的主要成分纳米氧化硅进行了表征,结果表明:纳米氧化硅为无定性粉体,所提供的国产中国红低温釉助熔粘接剂在用量为13.04%时水含量可控范围可为50.2%到51.8%,该控制范围比英国庄信万丰的控制范围更宽,在此范围可实现单个郎酒瓶(500 g容积)釉重在4.25～5.00 g之间,所配制的釉浆具有较好的流动性与触变性;烧制出的酒瓶铅镉溶出量符合国家标准.     

Composition and functional role of the mucus layers in the intestine

In discussions on intestinal protection, the protective capacity of mucus has not been very much considered. The progress in the last years in understanding the molecular nature of mucins, the main building blocks of mucus, has, however, changed this. The intestinal enterocytes have their apical surfaces covered by transmembrane mucins and the whole intestinal surface is further covered by mucus, built around the gel-forming mucin MUC2. The mucus of the small intestine has only one layer, whereas the large intestine has a two-layered mucus where the inner, attached layer has a protective function for the intestine, as it is impermeable to the luminal bacteria.     

Empirical Evidence in the Structure of Physical Theories

The author considers the empirical component of physical theories. He studies the origin and development of the theory of physical experiment, the structure and gnoseological hypotheses of the measuring process, as well as the relativity principle concerning the measuring equipment. Examples of modern physical theories are used in order to demonstrate the influence of experimental facts on the formation and development, verification and accepting of these theories in the structure of scientific systems. The role of accidental experimental facts in this process is also the subject.     

The practical use of a systems approach in large-scale designing

This paper describes in short a new approach to the solution of a practical design problem. The procedures for the approach are based on the use of a systems methodology. The main topics present the development of a project from the external assignment through detailed algorithms of systems modeling to the identification of the solution system.     

Sur les variations stressogènes quantitatives de la sérotonine dans le cerveau

Zusammenfassung Das zerebrale Serotonin unterliegt im Verlaufe eines emotionellen Stress bedeutenden quantitativen Veränderungen. Bei Wildhasen, welche 14 Tage lang Schreckzeichen ausgesetzt waren, vermehrte sich die Menge des Serotonins und erreichte ihr Maximum am 7. Tag. Nachher sinkt die Menge unter den Normalwert, um am Ende der zweiten Woche wieder anzusteigen, wobei sie unter dem Normalwert bleibt.     

Effect of adrenal function on level of hepatic and extrahepatic arginase

Résumé On a constaté que l'arginase des reins est plus sensible que l'arginase du foie a l'hydrocortisone injecté. Au contraire, l'adrénalectomie provoque la réduction de l'activité arginasique du foie mais ne modifie pas le niveau de l'arginase rénale.     

Termination of diapause by juvenoids in two species of ladybirds (Coccinellidae)

Zusammenfassung Die Wirkung von 18 Juvenilhormon-Mimetica auf Marienkäfer,Semiadalia undecimnotata undCoccinella septempunctata, wurde verglichen. Rund die Hälfte der Substanzen bewirkte Eireifung, 5 Substanzen auch Eiablage. Von den abgelegten Eiern entwikkelten sich ca. 50% zu normalen Käfern.

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The technical assistance by Miss.O. erná is acknowledge.     

Changes in electrical activity of the cockroachBlatta orientalis L. brain induced by anti-lobster brain antibody

Zusammenfassung Bei mit Langustenhirn immunisierten Kaninchen werden Anti-Hirn-Antikörper gebildet. Werden diese auf die Hirnoberfläche der SchabeBlatta orientalis L. gebracht, so kommt es zu erheblichen Veränderungen in der elektrischen Hirntätigkeit des Insekts.     

Alkaloide ausVinca minor L. Vincadin,Minovin und Vincorin

Summary The isolation and characterisation of three new alkaloids fromVinca minor L. is described: Vincadine C₂₁H₂₈N₂O₂, Minovine C₂₂H₂₈N₂O₂, and Vincorine C₂₂H₂₈N₂O₃ belonging to the indol- and dihydroindol alkaloids.

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VII. Mitteilung, VI. Mitt.: sieheJ. Mokrý I. Kompi, P. efovi, und. Bauer, Coll. Czech. Chem. Comm., im Druck.