For the purpose of developing an immune function on production accidents in a petrochemical enterprise, a new cultivation-evolution approach of preventive mechanism is suggested by analyzing various factors relating t...For the purpose of developing an immune function on production accidents in a petrochemical enterprise, a new cultivation-evolution approach of preventive mechanism is suggested by analyzing various factors relating to immune deficiency syndrome and by referring to immunity genetic algorithm and relevant concepts applied in medicine science. Accident-immunity system for highly hazardous petrochemical enterprise, which is made up of its productive system＇s Safety Organ and Safety Organization, is typically an evolution-cultivation progress for immune function, The new B immune cell is generated after several layers＇ screening, clone expanding, receptor editing, organizing in immune system of work accident in petrochemical enterprise. There is a B immune cell with high appetency and a manipulative function chain for accident-immunity. Taking the antigen of accidents in industry as the target function and the immune antibody as the solution, the authors carried out a computation diagram for prediction of appetency between the antigen and antibody.展开更多
Integrated Pest Management （IPM） technologies can reduce pest damage to crops by emphasizing non-chemical control methods thereby reducing potential negative effects of chemicals on the environment while preserving ...Integrated Pest Management （IPM） technologies can reduce pest damage to crops by emphasizing non-chemical control methods thereby reducing potential negative effects of chemicals on the environment while preserving profitability. This study investigates the adoption of eight IPM practices including intercropping, crop rotation, two improved varieties, incorporating a ＂striga chaser＂ in sorghum production, changing planting dates, altering planting density and fertilizer use. Explanatory variables include economic factors, social factors, management factors, and institutional factors. Results were consistent across logit and ordered logit analyses. Most factors affecting adoption across all crops and technologies are economic factors, including labor availability, technology resource requirements, technology complexity, and the level of expected benefits. Social factors are generally less associated with IPM technology adoption than either market or institutional factors. Results indicate that the evaluated technologies were scale-neutral and that farmer age and education level did not affect technology adoption.展开更多
The electrochemical behavior of X70 pipeline steel in (0.5mol·L-1 Na2CO3+1 mol·L-1 NaHCO3) solution was studied by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). X-ray photoel...The electrochemical behavior of X70 pipeline steel in (0.5mol·L-1 Na2CO3+1 mol·L-1 NaHCO3) solution was studied by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) were used to analyze the composition and microstructure of the surface film. The results showed that there were two anodic peaks at -600 mV and -350 mV. The surface film formed at -600 mV mainly consisted of ferrous carbonates and ferrous hydroxycarbonates. It had a small reaction resistance. It was metastable and possessed poor protective property. Numerous pits and microcracks existed on the film, which could be the active paths for the initiation of stress corrosion cracking. The surface film formed at -350 mV, mainly consisted of ferric oxides. It has high reaction resistance and offered good protection for the substrate.展开更多
With China patent application data of sunscreen cosmetics as analysis samples, searching the key words of international patent classification number A61 Q17/04 in Incopat, Patenics, and other retrieval platforms, this...With China patent application data of sunscreen cosmetics as analysis samples, searching the key words of international patent classification number A61 Q17/04 in Incopat, Patenics, and other retrieval platforms, this article analyzes China patent application quantity changes, primary applicants ranking and typical applicants' applications. It helps the enterprises grasp the technology and market development trends of sunscreen cosmetics.展开更多
The male sterility fluctuation of photo-thermo-sensitive genie male sterile(P(T) CMS Jlines induced by low air temperature is a key problem troubling the application of two-line system hybrid rice.The paper suggests t...The male sterility fluctuation of photo-thermo-sensitive genie male sterile(P(T) CMS Jlines induced by low air temperature is a key problem troubling the application of two-line system hybrid rice.The paper suggests to solve this problem by the breeding approaches,i.e,developing low sterile critical temperature P(T)GMS lines,herbicide resistant restorer lines,herbicide sensitive P(T)GMS lines and tetracydine-conditioned P(T)GMS lines to ensure the hybrid purity;and by the hybrid seed production techniques,i.e,taking the correct procedure of foundation seed production,the suitable district and season for hybrid seed production and the deep irrigation method against cold weather in high summer.展开更多
With the swift development of urban construction in China and the boost in people’s demands for green environments in cities, roof gardens are widely used as a new way of greening. This paper deals chiefly with the f...With the swift development of urban construction in China and the boost in people’s demands for green environments in cities, roof gardens are widely used as a new way of greening. This paper deals chiefly with the functions, building principle, classification and composing elements of roof gardens, an analysis of main ecological factors, loads, and waterproof. It suggests that roof gardens will bring about a comparatively big leap in city greening both quantitatively and qualitatively.展开更多
文摘For the purpose of developing an immune function on production accidents in a petrochemical enterprise, a new cultivation-evolution approach of preventive mechanism is suggested by analyzing various factors relating to immune deficiency syndrome and by referring to immunity genetic algorithm and relevant concepts applied in medicine science. Accident-immunity system for highly hazardous petrochemical enterprise, which is made up of its productive system＇s Safety Organ and Safety Organization, is typically an evolution-cultivation progress for immune function, The new B immune cell is generated after several layers＇ screening, clone expanding, receptor editing, organizing in immune system of work accident in petrochemical enterprise. There is a B immune cell with high appetency and a manipulative function chain for accident-immunity. Taking the antigen of accidents in industry as the target function and the immune antibody as the solution, the authors carried out a computation diagram for prediction of appetency between the antigen and antibody.
文摘Integrated Pest Management （IPM） technologies can reduce pest damage to crops by emphasizing non-chemical control methods thereby reducing potential negative effects of chemicals on the environment while preserving profitability. This study investigates the adoption of eight IPM practices including intercropping, crop rotation, two improved varieties, incorporating a ＂striga chaser＂ in sorghum production, changing planting dates, altering planting density and fertilizer use. Explanatory variables include economic factors, social factors, management factors, and institutional factors. Results were consistent across logit and ordered logit analyses. Most factors affecting adoption across all crops and technologies are economic factors, including labor availability, technology resource requirements, technology complexity, and the level of expected benefits. Social factors are generally less associated with IPM technology adoption than either market or institutional factors. Results indicate that the evaluated technologies were scale-neutral and that farmer age and education level did not affect technology adoption.
基金Supported by State Key Basic Research Plan (G19990650).
文摘The electrochemical behavior of X70 pipeline steel in (0.5mol·L-1 Na2CO3+1 mol·L-1 NaHCO3) solution was studied by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) were used to analyze the composition and microstructure of the surface film. The results showed that there were two anodic peaks at -600 mV and -350 mV. The surface film formed at -600 mV mainly consisted of ferrous carbonates and ferrous hydroxycarbonates. It had a small reaction resistance. It was metastable and possessed poor protective property. Numerous pits and microcracks existed on the film, which could be the active paths for the initiation of stress corrosion cracking. The surface film formed at -350 mV, mainly consisted of ferric oxides. It has high reaction resistance and offered good protection for the substrate.
文摘With China patent application data of sunscreen cosmetics as analysis samples, searching the key words of international patent classification number A61 Q17/04 in Incopat, Patenics, and other retrieval platforms, this article analyzes China patent application quantity changes, primary applicants ranking and typical applicants' applications. It helps the enterprises grasp the technology and market development trends of sunscreen cosmetics.
文摘The male sterility fluctuation of photo-thermo-sensitive genie male sterile(P(T) CMS Jlines induced by low air temperature is a key problem troubling the application of two-line system hybrid rice.The paper suggests to solve this problem by the breeding approaches,i.e,developing low sterile critical temperature P(T)GMS lines,herbicide resistant restorer lines,herbicide sensitive P(T)GMS lines and tetracydine-conditioned P(T)GMS lines to ensure the hybrid purity;and by the hybrid seed production techniques,i.e,taking the correct procedure of foundation seed production,the suitable district and season for hybrid seed production and the deep irrigation method against cold weather in high summer.
文摘With the swift development of urban construction in China and the boost in people’s demands for green environments in cities, roof gardens are widely used as a new way of greening. This paper deals chiefly with the functions, building principle, classification and composing elements of roof gardens, an analysis of main ecological factors, loads, and waterproof. It suggests that roof gardens will bring about a comparatively big leap in city greening both quantitatively and qualitatively.
