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- Keywords：chicken embryo,pituitary,lactotrope,immunofluorescenchemistry2|6|0<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Keywords：Thermomyces lanuginosus,thermostable xylanase,chemical modification,active site0|6|0<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Keywords：scanning electronic microscope,biofilm,Staphylococcus aureus,stainless steel surface0|6|0<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：A study was done to isolate and identify yeasts from apple, which (15 samples)were collected from the North Andre Apple Juice Co.Ltd. The yeasts were isolated with unpasteurized samples in the media of glucose yeast extract tryptone media. The identification of yeasts were done with the physiological characteristics and the API 20C AUX system. The Candida spp., Kloeckere spp. and Saccharomyces spp. were found in most samples. And high level of Candida spp. was detected in most samples. The 6 genera were Candida krusei (13), Saccharomyces cerevisiae (5), Kloeckera spp. (2), C. magnoliae (2), C. tropicalis (1)and C. kefyr (1). The accuracy of identification was >95 % . The API 20C AUX system could rapidly identify the clones of yeasts isolated from apple.Keywords：apple,yeasts,API 20C AUX system0|7|0<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Keywords：Helicoverpa assulta,meiosis,chromosome,karyotype1|6|0<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：Based on uniform design, the method of optimizing maize variety parameters was set up in the CERES maize simulation model. The method was also validated through numerical simulation with the relevant index in DSSAT35. The results showed that the parameters determined by this method were superior to those from DSSAT'S parameters. Comparing with those from DSSAT, the relative errors of flowering date, physiological maturity, grain yield, weight per grain and biomass at havest after 6 times of iteration with this method declined by 1 69 %, 5 31%, 6 15% , 3 26 % and 18 45 % respectively.However, the relative error of grain numbeer increased by 0 8 % . The method could automatically adjust the variety parameters.Keywords：maize,simulation model,uniform design,parameters optimization1|6|0<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Keywords：plant tissue culture,sugar-free micropropagation,PLC,environmental control1|6|0<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：Six varieties of Chinese cabbage with different ecotypes were used in this experiment to investigate their freezing tolerance. The results showed that the water content and the ratio of free to binded water in leaf decreased, but electrolytic leakage increased slowly with temperature decrease. Osmosis potential firstly decreased,and then increased with decreasing temperature. The free water content was nearly equal to the binded water content in January 14. The chlorophyll content and the ratio of chlorophyll a/b also decreased slowly.However, under low temperature stress, electrolytic leakage, leaf water content and the ratio of free to binded water of ecotp. cylindrica were all lower than those of ecotp. ocata and ecotp. depressa . It was obvious that ecotp. cylindrica had stronger ability against freezing.Keywords：Chinese cabbage,ecotype,freezing-tolerance,osmosis potential,the ratio of free to binded water0|7|0<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：The fusion expressing plasmid of inhibin was used to immunize the sheep. The results showed that the plasmid of inhibin could be expressed in the sheep after first immunization. The value of antibody of immunized group was remarkably higher than the control ( P <0 05) after primary immunization. The rate of positive antibody of immunized group was 46 7%. The content of FSH of the immunized group was remarkably higher than the control on 45 day after primary immunization ( P <0 05). The content of FSH of positive antibody was remarkably higher than that of negative antibody ( P <0 05). The twining rate of the immunized group was 39 2 % , 25 7 % higher than that of the control.Keywords：inhibitn gene immunization,FSH,twining1|6|0<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：A new method for planar cam design was proposed. Based on the method of low pair replacing high pair, the problem of cam design was transferred to that of planar linkage design. By means of rotary unit vectors, the equations of displacement, velocity and acceleration of the virtual mechanism were developed. And then, the virtual linkage's length and direction were deduced. Cam profile, curvature radius and pressure angle were calculated. The center's track equation of the circular cutter for manufacturing the cam profile was presented. Based on this method, cam design with straight and swinging roller follower were analyzed in detail. The actual planar cam design example was given. It was illustrated that the method was simple and effective for planar cam design.Keywords：planar cam design,low pair replacing high pair,rotary unit vector,radius of curvature,pressure angle0|6|0<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Keywords：spherical vector functions,universal joints,transmission error0|6|0<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：The theory of virtual design and the technology of computer simulation were introduced into the design of human machine interfaces for tank driver cabin. Human machine interfaces of tank driver cabin was compartmentalized based on the System Analysis and Ergonomic Method, the constitution method of 3D model was put forward by using the method related with computer graphics. The parts' libraries of human machine interfaces and human body model were carried out. Finally, the design software of human machine interface of tank driver cabin was developed on the basis of OpenGL, which established the foundation for the virtual design of human machine interface of tank driver cabin. The results showed that it could meet the need of Ergonomics simulation for human machine interfaces of tank driver cabin.Keywords：tank driver cabin,human-machine interface,geometrical modeling0|6|0<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：A mono channel active noise control system based on inverse QR decomposed RLS algorithm was developed to improve the result for clearing steady or non steady noise of the system based on fx lms structure. According to the result of the simulation, the system based on inverse QR decomposed RLS has been incteased algorithm 8?dB better filtering result of band limited steady noise compared to that based on LMS algorithm and can deal with well non steady noise that having no result in the fx lms system. The ANC system based on QRLS could be used in real life.Keywords：active noise control (ANC),adaptive filter,RLS1|6|0<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：A new controller with full functions was developed. This controller communicated with supervising computer by RS 485 standard, used chip 80C552 as CPU and was composed of display, communication, keyboard, input signals measure and output control circuits other than the system of 80C552. The software was developed by c51 and VC++. This controller can clean milking machines automatically, communicate with supervising computer, cleaning time can be adjusted and installed on milking machines of pine line and hall mode. The application of this controller was able to increase efficiency, ensured the milking machines were cleaned. This controller could clean milking machines by supervising computer.Keywords：milking machines,clean automatically,controller,0|6|0<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Keywords：sufu,total acid,free amino nitrogen,salt,total ester0|6|0<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：In order to get the best energy absorbing characteristics and improve safety, a study on the dynamic characteristics of collision for railway passenger vehicle in existence was made by using dynamic nonlinear lager deformation finite element methods. The model was simplified according to design drawing and the simulation was carried out through the software of PAM/crash parallel computing. The displacements, force, velocity, energy absorbing curves were obtained. The safety evaluation was thus made from analyses of the curves and structure of train was easy improved through observing the dynamic deformation.Keywords：vehicles collision,finite element,parallel computing2|6|0<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：Many scholars have ever evaluated the partnership of alliance. A mass statistics approach on evaluating the partnership of alliance and determining the weights of attributes was developed. Considering the abilities of partner's technology and management, a set of indexes for evaluating the partner of alliance were presented. A formula of evaluating indexes and reliability of estimate was put forward, when the indexes were hard to precision estimate. Some factors affecting the weights of attributes were analysed. The mainly included such as valuator's attitude towards indexes, importance of indexes in decision making and reliability of estimate, based on these factors, a method of determining the weights of attributes was developed, which provides quantitative analysis. Rationality and feasibility of this method was validated by an example of this model.Keywords：alliance,Partner Estimate,entropy information,probability3|6|0<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Keywords：Hi-tech,industrialization,strategy,Guangdong Province3|6|0<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：The theory of option games is a powerful tool in to dealing with investment under uncertainty and competition, A model of duopoly under uncertainty was formed. The values of the two firms were calculated by real option methods, the possible equilibriums was checked and the optimal investment rules of the two firms was determined. The results showed that the two firms'strategies were to be the leader, the follower or to be indifferent in the two roles, which were based on the value of stochastic factor that affected the demand of the product. Only if the value of stochastic factor became very large, simultaneous investment would be the two firms'optimal decision.Keywords：real options,uncertainty,option games1|6|0<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：A new asymptotic numerical method for nonlinear dynamic equations was proposed. In this method, the homotopy perturbation method was improved by using the precise integration technique. The result of numerical example showed that the new method was more accurate than the simple homotopy perturbation method. And the computational complexity was less than the traditional precise integration method. Furthermore, this method was not sensitive to the time step. It was thus suitable for solving nonlinear equations.Keywords：homotopy perturbation method,precise integration method,nonlinear equations1|6|0<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Keywords：transgenic cotton,gossypol,biosafety,HPLC3|6|0<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
