摘要:
The present invention relates to a process for the preparation of cyclic 4-oxoamidines. Such substances are precursors of active substances having biological action. The process according to the invention forms a further method of obtaining this class of compound.By reacting condensation products of aldehydes and aminonitriles or amino acid amides with oxidizing agents, the desired cyclic 4-oxoamidines are obtained according to the invention in good to very good yields.
摘要:
The present invention is concerned with a process for preparing compounds of the general formula (I). These compounds can preferably be used to prepare bioactive agents. The reaction of the invention starts from the corresponding hydroxy compounds which are oxidized, with Ru catalysis, in a one-phase aqueous system.
摘要:
The present invention relates to a method for isolating hair follicle mesenchymal stem cells and to the use thereof for therapy and prophylaxis as well as for cosmetic treatments.
摘要:
A fire-fighting system, which includes a nozzle housing having a turbulence chamber with a nozzle aperture communicating with the turbulence chamber and a temperature responsive compressive element which gives way at a specified temperature, and which compressive element and a sealing unit for the nozzle are held in place against the nozzle by a spring under compression which is released when the compression element gives way at a specified temperature.
摘要:
The invention relates to a method for controlling an automatic transmission, more particularly a method for controlling gear changes in an automatic transmission of a motor vehicle driven by an internal combustion engine, having the following steps: predicting the fuel consumption of the internal combustion engine that would result if the automatic transmission were shifted from its present gear into a next higher gear with relatively low transmission ratio between a transmission input and a transmission output of the automatic transmission, and/or predicting the fuel consumption of the internal combustion engine that would result if the automatic transmission were shifted from its present gear into a next lower gear with a relatively high transmission ratio between the transmission input and the transmission output; and comparing the predicted fuel consumption of the internal combustion engine in the next higher gear of the automatic transmission and/or the predicted fuel consumption of the internal combustion engine in the next lower gear of the automatic transmission with the present fuel consumption of the internal combustion engine; shifting the automatic transmission into the next higher gear or into the next lower gear as a function of the comparison in order to obtain a fuel consumption saving. The invention is characterized in that, before the shift, an additional fuel consumption resulting from the shift process itself is predicted, and a shift is performed as a function of the predicted additional fuel consumption.
摘要:
The present invention relates to a method for isolating hair follicle mesenchymal stem cells and to the use thereof for therapy and prophylaxis as well as for cosmetic treatments.
摘要:
A method for regulating a charging state of an energy accumulator for a vehicle with a hybrid drive includes detecting a driving speed variable value of the vehicle and determining a nominal charging state of the energy accumulator as a function of the driving speed variable value by a control unit, detecting an actual charging state of the energy accumulator, comparing the actual charging state with the nominal charging state by the control unit, switching on an energy consumer by a charging state regulator, for at least partially discharging the energy accumulator when the actual charging state exceeds the nominal charging state, tabulating a first nominal charging state value as a function of the driving speed variable value by a characteristic curve, in order to determine the nominal charging state of the energy accumulator, and adapting the characteristic curve by the control unit when the vehicle is braked.
摘要:
The present invention is concerned with the resolution of a mixture of enantiomers of N-protected amino acids by crystallization with enantiomerically pure N-unprotected β-amino acid derivatives.
摘要:
A method for laying a shirt, comprising the steps of folding a first shirt yoke and a second shirt yoke along mutually parallel folding lines; laying said first folded yoke on said shirt back and on said second yoke; fastening said first shift yoke to said second shirt yoke with a clamp positioned in the area of a beak formed by said first folded shirt yoke and said second folded shirt yoke; laying a first shirt sleeve and a second shirt sleeve on said fastened yokes respectively; folding said shirt torso end along a folding line extending transversely to said mutually parallel folding lines and at a distance from said shirt collar; fastening said torso end to said shirt by means of at least a first pin and a second pin located at a distance from said shirt collar; folding said torso end along said first shirt yoke and said second shirt yoke; and, tucking said torso behind said first folded shirt yoke and said second folded shirt yoke.