Used cracking catalyst fines from a cracking process wherein antimony or a compound thereof is used as a metals passivation agent are used as an efficient passivation agent in a cracking process.

A hierarchical data storage system comprises a main store and a smaller, faster slave store containing data currently required for processing. The memory system responds to a store access command to retrieve an item of data. In addition, for certain types of store access command, the system performs a look-ahead action to ensure that the slave store is loaded with another data item which forms par...

Method and device for creating building plates in a building consisting of a tiltable support table with an underframe having wheels.

PURPOSE:To put the titled device into a general purpose use at a low cost, by contriving the common formation of the assembly structures of non-insulating and insulating semiconductor devices and of the device. CONSTITUTION:When assembling the non-insulating semiconductor device, only by approximate equality to the thickness of a ceramic plate 9, on a heat radiating fin 8d for non-insulating type ...

The present invention relates to an iron-nickel alloy containing from about 30% to about 60% nickel, from about 0.001% to about 0.15% nitrogen, at least one element selected from the group consisting of from about 1% to about 10% molybdenum and from about 0.001% to about 2% aluminum and the balance essentially iron. The alloys demonstrate improved resistance to intermetallic compound formation, im...

A programmable controller for controlling a plant on the basis of a stored program includes a processing unit for reading out an instruction from a program memory to process the instruction. In the processing unit, it is determined whether the instruction read out from the memory is an instruction taking a register-modified addressing mode or an instruction taking a direct addressing mode. When th...

A suction drainage system for body cavities includes a suction collection container (22), and a disposable suction control chamber (30) through which an essentially constant level of suction is applied to a body cavity. Drained fluids flow into the suction collection container, into the suction control chamber through an elastomeric check valve (46) which precludes backflow of fluids to the patien...

The material is prepared by binding a sulphated polysaccharide to a carrier material with amino groups. For this, a sulphated polysaccharide is treated with an oxidising agent which oxidises glycols to aldehydes with cleavage of the carbon chain, and this modified sulphated polysaccharide is reacted with a carrier with amino groups. The affinity material can be used for adsorption and, w...

CONTROL SYSTEM FOR ETHYLENE POLYMERIZATION REACTOR A control apparatus for a tubular polymerization reactor having a feed line for a raw material to be polymerized, a cooling circuit for cooling the reactor with a flow of coolant and exit line for a product polymerization, comprises a quality sensor for sensing the actual quality of the product in the exit line, a quality controller for receiving ...

"Arrangement for supervising the functions of a memory device". For supervising the correct operation of a memory device it is proposed to divide this device into two or more modules (SRi). To that end the data words (DW) to be entered into the memory, each comprising a parity bit (PB), are divided into a like number of portions (SDWi) and each portion is entered into one of the modules (SRi). Che...

Plasmin inhibitory substances have been found in mammalian omental extracts. The substances all contain lipid components. In addition, related commercially available lipid containing molecules, such as mono-, di-, and trisialogangliosides are found to fossess unexpected plasmin inhibitory properties. This suggests methods of therapy for diseases and conditions where blood clotting and fibrin degra...

9-Aminonaphthacene derivative having the formula: wherein R1 and R2 are both hydrogen atoms or either one of them is a hydrogen atom and the other is hydroxy group or methoxy group; R3 is acetyl group or 1-hydroxyethyl group; R4 is a hydrogen atom; R5 is a hydrogen atom, hydroxy group, lower alkanoyloxy group, amino group, halogen-substituted lower alkanoylamino group or morpholino group...

Disclosed is a pharmaceutical composition containing an aminobenzoic acid derivative as an active ingredient represented by the following general formula: wherein 1R donotes one member selected from the group consisting of the residual groups formed by removing OH at 1(alpha) or 1(beta) position from arabinose, glucose, galactose and mannose, or a pharmaceutically acceptable salt there...

N6-Acenaphthyl adenosines and analogs thereof and pharmaceutically acceptable acid addition salts having highly desirable blood pressure lowering properties, processes for their manufacture and pharmaceutical compositions and methods for using said compounds and compositions are described.

For the synthesis of (8S)-8-fluoroerythromycins the corresponding 8,9-anhydroerythromycins 6,9-hemiketal are directly fluorinated with perchloryl fluoride.

Procainamide and N-acetylprocainamide (NAPA) immunogens, antibodies prepared therefrom, labeled conjugates, synthetic intermediates, and the use of such antibodies and labeled conjugates in immunoassays for determining the respective drugs. The immunogens comprise the drugs coupled at the alpha -position of the amide side chain to an immunogenic carrier material. The labeled conjugates and synthe...

Anthracycline glycosides of the general formula (A'): wherein R1 represents a hydrogen atom, a hydroxy group or a methoxy group; one of R2 and R3 represents a hydroxy group and the other of R2 and R3 represents a nitro group; and R4 represents a hydrogen atom or a hydroxy group; and their pharmaceutically acceptable salts; have anti-tumor activity.

PROCEDIMIENTO PARA LA PRODUCCION DE DERIVADOS DE LA 13-BETA-MILBEMICINA. CONSISTE EN HACER REACCIONAR UN 13-BETA-ALCOHOL DE FORMULA (II) POR ESTERIFICACION CON UN ALCOHOL DE FORMULA R2-XH O UN HALURO R3-HAL, PARA OBTENER DERIVADOS DE LA 13-BETA-MILBEMICINA DE FORMULA (I) DONDE R1 ES H O UN GRUPO PROTECTOR; R2 ES METILO, ETILO, ISOPROPILO O BUTILO SECUNDARIO; Y R REPRESENTA UN RADICAL R3, LIGADO PO...

PROCEDIMIENTO PARA LA OBTENCION DE COMPUESTOS DE ANTRACICLINA, DE FORMULA (I), Y DE SUS SALES DE ADICION DE ACIDOS FISIOLOGICAMENTE COMPATIBLES. CONSISTE EN FERMENTAR EL MICROORGANISMO STREPTOMYCES PURPURASCENS DSM 2658 EN UN MEDIO NUTRITIVO ADECUADO, EN CONDICIONES AEROBIAS; DESPUES DE UN TIEMPO DE FERMENTACION COMPRENDIDO ENTRE 20 Y 36 HORAS, AÑADIR UN INHIBIDOR QUIMICO, PARA OBTENER EL COMPUEST...

PROCEDIMIENTO PARA LA OBTENCION DE ESTERES GRASOS DE ERITROMICINA A, DE FORMULA (I), Y DE SUS MEZCLAS Y SALES. COMPRENDE LA REACCION DE LA ERITROMICINA A EN FORMA DE BASE CON UN CLORURO O ANHIDRIDO DE UN ACIDO GRASO CON C18BI- O TRIENICO DE CONFIGURACION ESTEREOESPECIFICA A11 CIS, PARA OBTENER EL COMPUESTO DE FORMULA (I), EN LA QUE UNO DE R Y RK REPRESENTA HIDROGENO Y EL OTRO EL RADICAL ACILICO. L...