Opisuje sa spôsob asymetrickej syntézy fluórfenikolu, tiamfenikolu alebo chloramfenikolu. Vo svojej alternatívnej podobe predkladaný vynález zahŕňa spôsob izomerizácie S,S-izoméru fluórfenikolu na R,S-izomér (I) postupným pôsobením: (i) nižšieho alkylsulfonylchloridu a terciárnej amínovej bázy; (ii) alkalického hydroxidu; (iii) vodnej kyseliny. Predkladané riešenie ďalej zahŕňa spôsob regioselektí...

drilling of boreholes. SUBSTANCE: invention is intended to supply power to autonomous down-hole navigation and geophysical devices in process of drilling. Turbo-generator has leak-proof stator put on immobile hollow shaft, rotor supported in bearings anchored on immobile hollow shaft and protected by sealing units. Rotor comes in the form of external frame, on edges of its outer side turbine blade...

civil engineering. SUBSTANCE: proposed solar plant for heat treatment of concrete and reinforced concrete articles has heat-accumulating reservoir provided with wall, horizontal base-bottom and side walls installed hermetically on heat- accumulating reservoir, transparent inner and outer envelopes with clearance in between, and heat insulating material. One of transparent envelopes is made in form...

mutual-payment electronic facilities. SUBSTANCE: electronic system that may be used as interbank payment system for servicing customers by means of plastic microprocessor cards has portable data storage and processing devices in the form of microprocessor cards, first electronic-account control units, terminal facilities designed for direct connection to portable data storage and processing device...

data display facilities. SUBSTANCE: system has one or more sets of parallel electrodes formed by electricity conducting materials. Electrode system is made in the form of cloth whose weft is formed by insulating threads and warp, by alternating electricity-conducting and insulating threads, or vice versa. Insulating threads arranged along electricity-conducting ones hold the latter in their relati...

PROBLEM TO BE SOLVED: To provide a method for computerized tomographic imaging, by which a favorable balance between the number of values to be measured, transmitted and/or processed on hand and a quality of images can be achieved. SOLUTION: The present invention relates to a method for computerized tomographic imaging. The transmission band width and the image quality are more favorably balanced ...

PROBLEM TO BE SOLVED: To provide a nanoporous silicone resin having good solubility and stability and a production method thereof. SOLUTION: A nanoporous silicone resin is a reaction product obtained by reacting a mixture containing (A) 15-70 mol.% of a tetraalkoxysilane of the formula: Si(OR1)4, (B) 12-60 mol.% of a hydrosilane of the formula: SiX3 and (C) 15-70 mol.% of an organic trialkoxysilan...

PROBLEM TO BE SOLVED: To provide a viscous coupling that can offer large differential limiting force without an increase in overall device size beyond an conventional type, and increase the degree of structural freedom in the design of such a viscous coupling. SOLUTION: The viscous coupling 10 comprises a first rotary member 1 and a second rotary member 2 relatively rotatable about the same axis o...

PROBLEM TO BE SOLVED: To provide a wind power generation device using a permanent magnet type AC generator for generating constant power regardless of the variance of wind power. SOLUTION: A permanent magnet type AC generator 21 is rotated and driven by a propeller 20. Power generated by the generator is supplied to an inverter 22. The inverter is controlled by a signal with a specific phase diffe...

A transmission for a vehicle including first and second rotating shafts which are rotatable by the torque transmitted through a clutch. Each shaft includes several transmission gears. A resisting member can be disposed between a gear and its corresponding shaft, such that the resisting member reduces the difference in rotating speed between the first and second shafts. The resisting member serves ...

"MECANISMO DE REVESTIMENTO PARA REVESTIR UM LADO DE UMA TIRA NãO SUPORTADA EM MOVIMENTO COM MATERIAL DE REVESTIMENTO". Processo e aparelho para revestir ambos os lados de uma tira de metal fina (12) com material eletroquimicamente ativo através do uso de mecanismo de haste de revestimento (18) atuando em um único lado da tira de metal. O processo é preferivelmente executado através de aplicação do...

Patente de Invenção: "TRITURADOR DE MARTELOS". Em um triturador de martelos, cujo ao menos um rotor(1) é formado por ao menos um disco de choque (2), sobre o qual são dispostos - distribuídos regularmente sobre sua circunferência - martelos de impacto (3), cada martelo de impacto (3) pode ser girado livremente em torno de um pino de retenção (4) dentro de um compartimento de oscilação (5). N...

Means for measuring deviation measures a vertical deviation of a green tire from circularity while the green tire is clamped by a green tire building drum. The green tire to be formed is shaped into a complete circle according to the measured value.

A biaxially oriented polyester film for a magnetic recording medium, which comprises an aromatic polyester resin composition comprising:(A) an aromatic polyester,(B) silicone resin particles which can be obtained by polymerizing a silane compound containing trialkoxysilane in the presence of a surfactant and water, contain at least 80 wt % of recurring units and are substantially spherical, and(C)...

Transparent, articles, in particular sheets, having a thickness greater than 5 mm obtained from polyalkylene terephthalate/isophthalate resin containing 5-20% of isophthalic, acid units,. characterised by an intrinsic viscosity greater than 0.8 dl/g; a melt strength at 280° C. greater than 1 cN and a melt viscosity at 280° C. greater than 2000 Pa.s for shear rates tending to zero and not less than...

Provided herein are subcombinations from which polyurethane foams and polyurethane foams containing polyisocyanurates may be prepared. The subcombinations are unique in that they contain components which synergistically act towards promoting compatibility between a blowing agent and the remaining components of the formulation. Through the use of the teachings herein, blowing agent concentrations i...

A double-axis elongated polyester film for dyeing which simultaneously satisfies following formulas:The polyester film is prepared by melt-extruding polyester chips and cooling the extrudate in a cooling drum to prepare a non-crystalline sheet; elongating said sheet at a temperature between 80 and 100° C. which is higher than glass transition temperature (Tg) to make 3.0 to 3.6 folds of length in ...

A process for controlling the composition of a subgrade gasoline so that the subgrade will yield an alcohol-containing gasoline which precisely meets desired specifications when mixed with the desired amount of alcohol. The process involves blending a plurality of blendstocks to produce a subgrade, withdrawing a sample of the subgrade, mixing it with a known amount of alcohol, analyzing the proper...

A method for association of anonymous reflectors (R1-R11) to detected angle positions, whereby a) the anonymous reflectors are arranged in positions in a transport area; b) positions of the reflectors (R1-R11) are stored in first memory means (20); c) a beam (B) is emitted from an emission source (13) of a vehicle (10) over a search sector; d) reflected signals from reflecting objects are received...

A processor-oriented device provides a watchdog timer having a test mode programmable reset. When the device is placed in a test mode by pulling a test mode hardware pin during a reset of the timer and then an appropriate write key is provided to the timer, a watchdog timer reset count is writeable, allowing for a programmable duration for a watchdog timer reset. The watchdog timer reset count may...