摘要:
A process for the preparation of L-amino acids, in which the following steps are carried out: (a) fermentation of the coryneform bacteria which produce the desired L-amino acid and in which at least the gene which codes for trehalose phosphatase and/or the gene which codes for maltooligosyl-trehalose synthase and/or the gene which codes for maltooligosyl-trehalose trehalohydrolase is or are attenuated, (b) concentration of the desired L-amino acid in the medium or in the cells of the bacteria, and (c) isolation of the L-amino acid, and optionally bacteria in which further genes of the biosynthesis pathway of the desired L-amino acid are addtionally enhanced are employed, or bacteria in which the metabolic pathways which reduce the formation of the desired L-amino acid are at least partly eliminated are employed.
摘要:
A first data stream for a first data transmission system having a first data rate contains ATM data cells and structural data, which are distributed as spaced apart data in accordance with a specified instruction and are assigned to a section including in each case a plurality of ATM data cells. While retaining its ATM data cell format, the first data stream is converted into a second data stream containing only ATM data cells for a second data transmission system having a second data rate which is higher than the first data rate. The structural data are thereby selected (or picked out) from the first data stream and are input into a marked structural cell having the ATM cell format, for the section. The structural cell is inserted into the second data stream to partially fill an unoccupied section resulting from the differing data rates.
摘要:
A process may be implemented which obtains a signal indicating a synchronization error between a pseudo-random signal sequence from a transmitter and a reference pseudo-random signal sequence from a receiver in a measuring device on the receiving end. In order to be able to detect a synchronization error as quickly and reliably as possible, successive sections (a, b, c) of a reference pseudo-random signal sequence (g'(n)) are each cross-correlated separately with the received pseudo-random signal sequence (g(n)), yielding partial cross-correlation functions (KKF.sub.a (n), KKF.sub.b (n) and KKF.sub.c (n)). The partial cross-correlation functions are added up to obtain a sum cross-correlation function (KKF.sub.s (n)). The sum cross-correlation function (KKF.sub.s (n)) is analyzed to detect the proper chronological occurrence of at least three maximums (m.sub.a, m.sub.b and m.sub.c). If the maximums (m.sub.a, m.sub.b and m.sub.c) do not occur at the proper times, a signal (synch) indicating a synchronization error is generated.
摘要:
A process for recovering, at the reception end, data transmitted over a transmission path for digital data streams. A code-word generator for generating a binary code word producing a Dirac pulse is provided. The binary code word is cyclically shifted to create further binary code words. The binary code word and further binary code words are inverted to create still further binary code words. The data is coded, on the transmission end of the transmission path, with the binary code word, with the further binary code words, and with the still further binary code words. On the reception end of the transmission path, the data is recovered by cross-correlating the data and by utilizing the position of the main maximum of the cross-correlation functions. To increase the number of code words, a second code-word generator and a third codeword generator, having different generator polynomials, are used for coding binary code words, further binary code words, and still further binary code words, by cyclical shifting and inversion in a manner similar to that above. On the reception end of the transmission path, second and third cross-correlators are additionally used. The main maximum of each of the resulting three cross-correlation functions is detected and the data word transmitted is recovered based on a main maximum with a value above a predetermined value and from the position of this main maximum.
摘要:
The present invention relates to compositions comprising polypeptides, especially polypeptides capable of specifically binding predetermined antigens. The polypeptide in the composition comprises at least two antigen binding sites. These at least two antigen binding sites are located on a single polypeptide chain. One of the at least two antigen binding sites specifically binds the human CD3 antigen. The polypeptide may exist in both monomeric form and multimeric form. The multimeric form of the polypeptide constitutes no more than 5% of the total weight of the combined monomeric and multimeric forms of said polypeptide.
摘要:
The invention relates to methods of preparing antibody fragments. The invention further relates to antibody fragments prepared by these methods. The invention further relates to antibody variable regions comprised in antibody fragments producible by these methods.
摘要:
A method for transparently directing data in a multi-GPU system. A driver application receives a first plurality of graphics commands from a first graphics application and selects a first GPU from the multi-GPU system to exclusively process the first plurality of graphics commands. The first plurality of graphics commands is transmitted to the first GPU for processing and producing a first plurality of renderable data. The first plurality of renderable data is stored in a first frame buffer associated with the first GPU. A second plurality of graphics commands is received from a second graphics application and a second GPU is selected to exclusively process the second plurality of graphics commands. The second GPU processing the second plurality of graphics commands produces a second plurality of renderable data. The second plurality of renderable data is stored in a second frame buffer associated with the second GPU.
摘要:
A method for producing a selective doping structure in a semiconductor substrate in order produce a photovoltaic solar cell. The method includes the following steps: A) applying a doping layer (2) to the emitter side of the semiconductor substrate, B) locally heating a melting region of the doping layer (2) and a melting region of the semiconductor substrate lying under the doping layer (2) in such a way that dopant diffuses from the doping layer (2) into the melted semiconductor substrate via liquid-liquid diffusion, so that a high doping region (3) is produced after the melt mixture solidifies, C) producing the planar low doping region by globally heating the semiconductor substrate, D) removing the doping layer (2) and E) removing or converting a layer of the semiconductor substrate on the doping side in such a way that part of the low doping region and of the high doping region close to the surface is removed or is converted into an electrically non-conducting layer.
摘要:
The present invention relates to a heterophasic polymer composition which comprises (i) a matrix comprising a propylene homopolymer and/or a propylene copolymer having an amount of comonomer units of less than 1.0 wt %, and (ii) an elastomeric polypropylene which is dispersed within the matrix and comprises comonomer units derived from ethylene and/or a C4 to C12 alpha-olefin; and wherein the heterophasic polymer composition has an amorphous fraction AM in an amount of 2.0 to 7.5 wt %, and the amorphous fraction AM has an amount of ethylene- and/or C4 to C12 alpha-olefin-derived comonomer units of 20 to 45 wt %.
摘要:
A method of making a polysiloxane containing polymer is described. The method comprises the steps of: i) Preparing a polysiloxane containing polymer by the polycondensation of siloxane containing monomers and/or oligomers which comprise at least 2 condensable groups per molecule, in the presence of (a) one or more condensation catalysts and optionally one or both of (b) a diluent (a plasticiser and/or extender) and/or an end-blocking agent; and ii) Where required quenching the polymerisation process. The diluent, when present, is substantially retained within the resulting diluted polysiloxane containing polymer and the process takes place at a pressure of at least 75×105 Pa (0.75 MPa).