摘要:
A novel paper sizing composition comprising a ketene dimer and a hydrophilic vinyl polymer containing an alkylmercaptan having 6-22 carbon atoms. The composition has excellent storage and mechanical stability and sizing effect.
摘要:
A composition of a polymer diffusion matrix for transdermally introducing pharmaceutical substances comprises 100 parts by weight of polyvinylpyrrolidone with a molecular mass of 500 thousand mass of 500 thousand to 1500 thousand, 33 to 100 parts by weight of polyethyleneglycol with a molecular mass of 300 to 600 and 0.6 to 66 parts by weight of the pharmaceutical substance. Zusammenfassung Zusammensetzung einer polymeren Diffusionsmatrix für transdermale Einführung von Arzneistoffen enthält 100 Masseanteile Polyvinylpyrrolidon mit einer Masseanteilen von 500 Tsd bis 1500 Tsd. von 33 bis 100 Masseanteilen Polyäthylenglykol mit einer Molekularmasse von 300 bis 600 und von 0,6 bis 66 Masseanteilen eines Arzneistoffes.
摘要:
A novel fructose analog is disclosed which has been found to modify the food intake of mammals. If administered during the diurnal fasting period, the mammals increase their food intakes. If administered during the diurnal feeding pe riod, food intake is decreased. The compound is 2,5-anhydro-1,6-dihalo-1,6-dideoxy-D-mannitol, preferably 2,5-anhydro- 1,6-dichloro-dideoxy-D-mannitol ("Charmitol").
摘要:
A titanium implant has surface areas bombarded by a mass of granular bodies of spherical form. Said surface structure is obtained by treating the implant blank in a centrifugal-planetary device with a chamber filled with balls and a soap-water solution into which the implant blank is immersed, the desired structure surface of the implant being obtained in the coarse of rotation of the chamber, as a result of impacts of the balls with the blank surface. The implant obtained is characterized by high thromboresistance and biological inertia properties. Zusammenfassung Das Titanimplantat weist plastisch verformte Oberflächen, die unter Einwirkung von freien granulierten Körpern in Form von Kugeln verdichtet sind. Solche Oberflächenstruktur wird durch die Bearbeitung des Werkstücks für Implantat in einer Einrichtung für die Bearbeitung im Planeten-Schleuderverfahren erreicht, in welcher man das Werkstück in eine mit Kugeln und wässriger Seifenlösung angefüllte Kammer einbringt, wodurch im Laufe der Rotation der Kammer beim Aufprallen der Kugeln mit Werkstückoberflächen die Bearbeitung derselben erfolgt, die die erforderliche Oberflächenstruktur ergibt. Das hergestellte Implantat besitzt eine erhöhte Thrombenresistenz und hohe biologische Trägheit.
摘要:
Un détecteur de mouvements est sensible aux informations portant sur les bords d'objets et contenues dans des signaux de télévision. Essentiellement, le détecteur de mouvements traite les signaux de télévision de façon à fournir des informations portant sur les bords d'objets en déterminant le passage par zéro des signaux traités. L'information concernant les bords contenus dans une trame vidéo est mémorisée, puis l'information mémorisée est vérifiée après un certain temps. Si la position de quelques bords a changé, cela indique qu'il y a eu mouvement. De cette façon, un seul bit d'information suffit pour indiquer la présence ou l'absence d'un bord. Le détecteur de mouvements comprend une mémoire (26) capable de stocker les bords de tous les endroits possibles d'une trame vidéo. L'adresse dans la mémoire représente la localisation du bord. Dans les circuits, seuls les bords horizontaux d'une trame vidéo sont stockés, puis comparés aux transitions d'une des trames comparables suivantes. Lorsqu'il n'y a pas eu de mouvement, la position des bords stockés et des bords réels est identique. Les circuits utilisent un comparateur binaire (28) qui fournit un signal indicateur de mouvement si les bords stockés et les bords réels ne coïncident pas, en indiquant ainsi qu'il y a eu mouvement. Ce signal indicateur de mouvement peut déclencher un signal d'alarme ou être utilisé comme curseur sur un moniteur afin d'identifier la zone où le mouvement s'est produit.
摘要:
A method for preparing metal fiber articles is disclosed. The method comprises forming a metal coating on an organic fiber fabric by plating and firing the thus coated fabric in a reducing gas atmosphere. Also a method for preparing a cadmium electrode with a nickel substrate utilizing said method is disclosed.
摘要:
Chloropolysilanes can be produced in high yield without forming solid waste materials by contacting silicon materials with chlorine at a temperature of 140∼300°C in the presence of copper, a copper compound or a mixture thereof.
摘要:
An anti-bacterial medical material comprises a polyurethane complexed with polyvinylpyrrolidone and an anti-bacterial agent complexed with the polyvinylpyrrolidone. The material is used per se and as a coating (32) for medical devices such as, for example, catheters (46) and wound drainage tubes (30).
摘要:
New liquid crystalline compounds containing the bicyclo[2,2,2]octane ring and the phenylisothiocyanato group in their molecules of the general formula 1: wherein: R is a normal or branched alkyl H 2n+1 C n - or alkenyl H 2n-1 C n - group containing up to 15 carbon atoms, some of the hydrogen atoms in the alkyl chain being sometimes substituted by a fluorine atom, Z is a single bond or -COO-, -OOC-, -CH₂O- or -C≡C- group, the ring A is a 1,4-disubstituted benzene ring or 2,5-disubstituted pyrimidine ring or a 2,5-disubstituted pyridine ring or a 2,5-disubstituted 1,3-dioxane ring, m stands an integer 0 or 1, X1, X2 and X3 are identical or different and each of them denotes a hydrogen atom or a fluorine atom or a chlorine atom or a bromine atom or a cyano group, however, if m=1 and the ring A is not a benzene ring then Z is also a -CH₂CO-, -CO-CH₂-, -CH=CH-, CHYCH₂-, -CH₂-CHY-, -C₆H₄-CH₂-CHY-, -C₆H₄-CHY-CH₂-, or C₆H₄-C≡C- group where Y is a hydrogen atom or a fluorine atom or a chlorine atom or a cyano group or a methoxy group or a hydroxy group are prepared and used as component of liquid crystal mixture. Method manufacturing of compounds 1, the liquid crystal mixture containing compounds 1 and their use for electrooptical devices are described.
摘要:
This invention provides a sort of non-noble metal combustion catalyst of honeycomb monolithic form. The catalyst is composed of silicate material as the first carrier, a coating of metallic oxides as the second carrier and a mixture of metallic oxides and oxides of rare earth metal as the catalytically active component. This invention also provides the process for its preparations, which comprises immersing the carriers in a coating liquid, then drying and baking it, the features of which are that the whole process, i.e. immersing, drying and baking, must be carried out at leat twice. The second carrier is obtained after the first round of immersing, drying and baking, and the catalytically active component is loaded after the second treatment so as to obtain the factual product.