As a typical representative and main technicalmeans of advanced manufacturing technology,robotic technology plays an important role in raisingan enterpse’s engineering level, improving its prod-uct quality and produc...As a typical representative and main technicalmeans of advanced manufacturing technology,robotic technology plays an important role in raisingan enterpse’s engineering level, improving its prod-uct quality and productivity, and realizing civilizedproduction. Currently, there are nearly one millionrobots of various kinds, which are employed widelyin different fields of manufacturing industry. Robot-ics is now one of the high technologies, which arecompetitively developed by the developed coun-展开更多
This paper focus on the ratoon rice, which with the features of south Chi-na paddy cultivation technology. First, the development of the technology research on ratoon rice in southwest ecotope of China was briefly rev...This paper focus on the ratoon rice, which with the features of south Chi-na paddy cultivation technology. First, the development of the technology research on ratoon rice in southwest ecotope of China was briefly reviewed. Second, the key technical measures of the ratoon rice production were described in detail. At last, the application effect of the ratoon rice production technology was described accu-rately, which based on the production practice in recent years. The purpose of this article is promoting the research and extension of the ratoon rice technology more widely in world’s main rice-producing areas, especial y in the suitable area where the light and heat resources are rich.展开更多
This article mainly summarizes various aspects of hydrogen peroxide(H2O2)production through the anthraquinone route,including hydrogenation catalysts,working solution,regeneration technique,hydrogenation reactors,and ...This article mainly summarizes various aspects of hydrogen peroxide(H2O2)production through the anthraquinone route,including hydrogenation catalysts,working solution,regeneration technique,hydrogenation reactors,and environmental protection.The advances and breakthrough of SINOPEC in the production of H2O2 through the anthraquinone route is presented in this review,highlighting recent innovative technology on these aspects developed independently.The technical prospect and scientific challenges associated with the direct synthesis method from hydrogen and oxygen are also briefly discussed.展开更多
After two decades＇ endeavor, the Research Institute of Petroleum Processing （RIPP） has successfully de- veloped a green caprolactam （CPL） production technology. This technology is based on the integration of tita...After two decades＇ endeavor, the Research Institute of Petroleum Processing （RIPP） has successfully de- veloped a green caprolactam （CPL） production technology. This technology is based on the integration of titanium silicate （TS）-I zeolite with the slurry-bed reactor for the ammoximation of cyclohexanone, the integration of silicalite-1 zeolite with the moving-bed reactor for the gas-phase rearrangement of cyclohex- anone oxime, and the integration of an amorphous nickel （Ni） catalyst with the magnetically stabilized bed reactor for the purification of caprolactam. The world＇s first industrial plant based on this green CPL produc- tion technology has been built and possesses a capacity of 200 kt·a-1. Compared with existing technologies, the plant investment is pronouncedly reduced, and the nitrogen （N） atom utilization is drastically improved. The waste emission is reduced significantly; for example, no ammonium sulfate byproduct is produced. As a result, the price difference between CPL and benzene drops. In 2015, the capacity of the green CPL produc- tion technology reached 3 ×10-6 t·a-1, making China the world＇s largest CPL producer, with a global market share exceeding 50%.展开更多
Recent progress in the production and technology of ductile cast iron castings in China is reviewed. The manufacture and process control of as-cast ductile iron are discussed. The microstructure, properties and applic...Recent progress in the production and technology of ductile cast iron castings in China is reviewed. The manufacture and process control of as-cast ductile iron are discussed. The microstructure, properties and application of partial austenitization normalizing ductile iron and austempered ductile iron (ADI) are briefly depicted. The new development of ductile iron production techniques, such as cored-wire injection (wire-feeding nodularization) process, tundish cover ladle nodularizing process, horizontal continuous casting, and EPC process (lost foam) for ductile iron castings, etc., are summarized.展开更多
The shale oil and gas exploitation in China is technically benchmarked with the United States in terms of development philosophy,reservoir stimulation treatment,fracturing parameters,fracturing equipment and materials...The shale oil and gas exploitation in China is technically benchmarked with the United States in terms of development philosophy,reservoir stimulation treatment,fracturing parameters,fracturing equipment and materials,oil/gas production technology,and data/achievements sharing.It is recognized that the shale oil and gas exploitation in China is weak in seven aspects:understanding of flow regimes,producing of oil/gas reserves,monitoring of complex fractures,repeated stimulation technology,oil/gas production technology,casing deformation prevention technology,and wellbore maintenance technology.Combined with the geological and engineering factors of shale oil and gas in China,the development suggestions of four projects are proposed from the macro-and micro-perspective,namely,basic innovation project,exploitation technology project,oil/gas production stabilization project,and supporting efficiency-improvement project,so as to promote the rapid,efficient,stable,green and extensive development of shale oil and gas industry chain and innovation chain and ultimately achieve the goal of“oil volume stabilizing and gas volume increasing”.展开更多
The demands for improved engine performance,fuel economy,durability,and lower emissions provide a continual challenge for engine designers.The use of Compacted Graphite Iron(CGI)has been established for successful hig...The demands for improved engine performance,fuel economy,durability,and lower emissions provide a continual challenge for engine designers.The use of Compacted Graphite Iron(CGI)has been established for successful high volume series production in the passenger vehicle,commercial vehicle and industrial power sectors over the last decade.The increased demand for CGI engine components provides new opportunities for the cast iron foundry industry to establish efficient and robust CGI volume production processes,in China and globally.The production window range for stable CGI is narrow and constantly moving.Therefore,any one step single addition of magnesium alloy and the inoculant cannot ensure a reliable and consistent production process for complicated CGI engine castings.The present paper introduces the SinterCast thermal analysis process control system that provides for the consistent production of CGI with low nodularity and reduced porosity,without risking the formation of flake graphite.The technology is currently being used in high volume Chinese foundry production.The Chinese foundry industry can develop complicated high demand CGI engine castings with the proper process control technology.展开更多
A new gas hydrate reservoir stimulation method of in-situ fracturing with transient heating is proposed, in line with analysis of the technological bottlenecks faced by marine gas hydrate production. This method injec...A new gas hydrate reservoir stimulation method of in-situ fracturing with transient heating is proposed, in line with analysis of the technological bottlenecks faced by marine gas hydrate production. This method injects the developed chemical reagents into a hydrate reservoir through hydraulic fracturing, releasing heat during the chemical reaction to increase the hydrate decomposition rate. The chemical reaction product furthermore has a honeycomb structure to support fractures and increase reservoir permeability. Based on the geological model of natural gas hydrate in the South China Sea, three development methods are simulated to evaluate hydrate production capacity, consisting of horizontal well, fractured horizontal well and in-situ fracturing with transient heating well. Compared with the horizontal well, the simulation results show that the cumulative gas production of the fractured horizontal well in one year is 7 times that of the horizontal well, while the cumulative gas production of in-situ fracturing with transient heating well is 12 times that of the horizontal well, which significantly improves daily efficiency and cumulative gas production. In addition, the variation patterns of hydrate saturation and temperature-pressure fields with production time for the three exploitation plans are presented, it being found that three sensitive parameters of fracture conductivity, fracture half-length and fracture number are positively correlated with hydrate production enhancement. Through the simulations, basic data and theoretical support for the optimization of gas hydrate reservoir stimulation scheme has been provided.展开更多
The product system of high strength low alloy steels(HSLA)produced by Wuhan Iron and Steel(Group)Corporation(WISCO)was presented.A series of high performance structural steels have been developed for important constru...The product system of high strength low alloy steels(HSLA)produced by Wuhan Iron and Steel(Group)Corporation(WISCO)was presented.A series of high performance structural steels have been developed for important construction projects around the world in different areas,such as bridge,pressure vessel,pipe line,shipbuilding,architecture,machinery and railway wagons.In order to promote the development of large heat input welding steel,high grade thick pipeline steel and long span bridge steel,a lot of advanced production technologies have been achieved through intensive investigation,such as the control of high purity,high homogenization and free defects in steel slabs,the rules of high melting point particle formation and distribution in micro and nano scale during steel production,and the TMCP technology for ultra low carbon bainite steel for medium and heavy plates.WISCO will carry on research and application of economic and weather-resistant steels and promote the developing and producing technologies of HSLA steel.展开更多
To meet the demand of maize production in Guangxi and even the southwest region of China and realize the upgrading and undating of maize varieties which will continuously improve the yield and quality of maize,a new b...To meet the demand of maize production in Guangxi and even the southwest region of China and realize the upgrading and undating of maize varieties which will continuously improve the yield and quality of maize,a new big-ear maize variety Guidan 903 with high yield,stable yield and good quality was established by the Maize Research Institute of Guangxi Academy of Agricultural Sciences with two self-selected inbred line GRL17349 and GRL21191 as female and male parents seperately.The average yield of this variety were 7429.5 and 7000.5 kg/hm^(2)in Guangxi Maize Regional Trial and Production Test respectively,which increased by 6.3%and 5.6%than the control(Guidan162).It was approved by Guangxi Zhuang Autonomous Region Crop Variety Certification Committee in June 2020(Approval No.Gui sheng yu 2020083).Determined by the Cereal Quality Supervision and Testing Center of Ministry of Agriculture and Rural Affairs(Bejjing),the grain bulk density,ratio of crude protein,crude fat,crude starch and lysine of Guidan 903 were 782 g/L,9.41%,6.19%,71.45%,0.35%respectively.This variety has the characterisics of strong resistance to collapse and disease,good quality,high and stable yield and wide adaptability.Furthermore,its seed yield is high with easy production technology and low cost.展开更多
According to the objective reality in Yunnan Province,such as great difference of weather,a great proportion of minorities,technological backwardness of agricultural production,low conversion rate of research accompli...According to the objective reality in Yunnan Province,such as great difference of weather,a great proportion of minorities,technological backwardness of agricultural production,low conversion rate of research accomplishments,and a limited number of agricultural technical personnel,ASP.NET technique and SQL Server 2005 database technique are adopted.Database platform of county agricultural production technology in Yunnan Province is established by using B/S structure.This platform includes presentation layer,application layer,and data layer,involving regional information,technology column information,technology classification information,technology content and other databases.It has six functional modules,namely information browse,system management,regional maintenance,technical section maintenance,category maintenance and technical information release,integrating crop cultivation,livestock breeding,economic forest management,plant protection,agricultural products processing,agricultural machinery use and other agricultural technical information.This platform can exchange information dynamically with the client,perform the query request from users,and send the result to users.This database platform has friendly interface,profuse information,high pertinency and so on,which offers rich and reliable information resources to farmers,agricultural technical personnel,and government.At present,this platform has been popularized in some areas of Yunnan Province and has obtained good results.展开更多
The determining factor of<em> Setaria italica </em>(L.) P. Beauv. is the coupling of its flowering stage and outcrossing rate which leads to low and unstable seed yields in self-pollinated foxtail millet h...The determining factor of<em> Setaria italica </em>(L.) P. Beauv. is the coupling of its flowering stage and outcrossing rate which leads to low and unstable seed yields in self-pollinated foxtail millet hybrids and thereby limits their large-scale application. In this study, Datong 27, Datong 29 and gu 83 were screened and identified through meticulous observations of their pollination habitats. High exposure rate, degree of exposure and plump of stigma are good factors to accept foreign pollen. Datong 27 and Datong 29 have some additional characteristics, such as long filaments and exposed and full anthers that contain a large amount of pollen. We transformed into a series of stigma-exposed and plump sterile lines that easily accepted exotic pollen. New restorer lines with anthers that were full of powder and exhibited quick recovery, which improved the parental lines’ heterosexual characteristics. By tracking and monitoring the leaf development of the new sterile and restorer lines, a coupling law of leaf development was determined and a series of flowering control measures were formulated. These factors ensured that the parental lines encounter one another during the flowering stage. By utilizing fertilizer and water, the vitality of the female stigma, amount of powder scattered and powder loosening time were prolonged, which increased hybrid seed yields from 1500 to 3000 kg/hm<sup>2</sup>. These findings were helpful in resolving the technical problems of seed production that restricted the propagation of foxtail millet hybrids and supporting future large-scale applications.展开更多
Background:As the market demands change,SMEs(small and medium-sized enterprises)have long faced many design issues,including high costs,lengthy cycles,and insufficient innovation.These issues are especially noticeable...Background:As the market demands change,SMEs(small and medium-sized enterprises)have long faced many design issues,including high costs,lengthy cycles,and insufficient innovation.These issues are especially noticeable in the domain of cosmetic packaging design.Objective:To explore innovative product family modeling methods and configuration design processes to improve the efficiency of enterprise cosmetic packaging design and develop the design for mass customization.Methods:To accomplish this objective,the basic-element theory has been introduced and applied to the design and development system of the product family.Results:By examining the mapping relationships between the demand domain,functional domain,technology domain,and structure domain,four interrelated models have been developed,including the demand model,functional model,technology model,and structure model.Together,these models form the mechanism and methodology of product family modeling,specifically for cosmetic packaging design.Through an analysis of a case study on men’s cosmetic packaging design,the feasibility of the proposed product family modeling technology has been demonstrated in terms of customized cosmetic packaging design,and the design efficiency has been enhanced.Conclusion:The product family modeling technology employs a formalized element as a module configuration design language,permeating throughout the entire development cycle of cosmetic packaging design,thus facilitating a structured and modularized configuration design process for the product family system.The application of the basic-element principle in product family modeling technology contributes to the enrichment of the research field surrounding cosmetic packaging product family configuration design,while also providing valuable methods and references for enterprises aiming to elevate the efficiency of cosmetic packaging design for the mass customization product model.展开更多
As a natural mineral,Potash Magnesium Sulphate fertilizer has a quite high nutrient utilization rate without affecting soil p H in long time running related to Potassium Sulphate.And to displace Potassium Sulphate wit...As a natural mineral,Potash Magnesium Sulphate fertilizer has a quite high nutrient utilization rate without affecting soil p H in long time running related to Potassium Sulphate.And to displace Potassium Sulphate with Potash展开更多
Based on a great number of laboratory experiments, a new technique has been developed for producing wear resistant ring-hammers. In this technology, lost foam casting with iron sand was combined to make mold; a specia...Based on a great number of laboratory experiments, a new technique has been developed for producing wear resistant ring-hammers. In this technology, lost foam casting with iron sand was combined to make mold; a special alloy was used to inoculate the molten steel, and proper heat treatment was used to further improve mechanical properties of wear resistant ring-hammers. The influence of this new production technology on the microstructure and mechanical properties of wear resistant ring-hammers was studied. Results show that iron sand molding, having the inherent characteristic of sand molding, changes the type of metallic compounds, refines crystal grains and increases the fineness of microstructure. Practical experience verified that the properties of the ring-hammers produced with this new technique are as follows: tensile strength (Rm) 720 MPa, impact toughness (ak) > 210 J·cm-2 and hardness > 200 HB. After water quenching from 1,080℃ (holding for 4 h) and tempering at 320℃ for 3 h, the best wear resistance is obtained, and the wear resistance is 1.6 times higher than that of common high manganese ring-hammers.展开更多
Ultra-thin hot-rolled strip is the developing result of the modern plate and strip rolling technology and can be used to replace cold-rolled products for energy saving and emission reduction.This work reviews recent p...Ultra-thin hot-rolled strip is the developing result of the modern plate and strip rolling technology and can be used to replace cold-rolled products for energy saving and emission reduction.This work reviews recent progress and breakthroughs in this field by focusing on three recent technologies,namely the conventional strip with hot coil box and endless rolling,thin slab continuous casting and rolling/semi endless rolling,and endless compact rolling.In summary,ensuring high-quality production is an important bottleneck for ultra-thin strip and ferritic hot rolling by endless compact rolling.This production technology has strong feasibility and broad prospects for future development.展开更多
Preservative-treated pinewood is mildewproof, anticorrosive and mothproof, with the long durability and environmental protection as its fine performance. It has become an important material for landscape construction ...Preservative-treated pinewood is mildewproof, anticorrosive and mothproof, with the long durability and environmental protection as its fine performance. It has become an important material for landscape construction for the wide pine material sources, low price, less deformation, moderate density, good fl exibility and strength, fine texture and good integration with the natural environment. On the basis of introducing pinewood species, preservatives and production process of preservative-treated pinewood, this paper focuses on the application of preservative-treated pinewood used in log cabin, pavilion, service buildings and other garden timber architecture, as well as roads, platforms, bridges, rails, gallery frames, pergolas and other opuscules.展开更多
According to the experiment and production practice,this paper brings forward the technical regulations on the production technology,the environmental conditions of production area,the output index,the site selection ...According to the experiment and production practice,this paper brings forward the technical regulations on the production technology,the environmental conditions of production area,the output index,the site selection and land preparation,the variety selection and seed quality,the fertilization,the sowing,the field management,the pest and disease control,the harvesting,the storage,the filing etc. about the adzuki beans in Qingyang City.展开更多
[Objectives]This study was conducted to obtain the best formula for alkali-soluble Poria polysaccharide tough biscuits.[Methods]Based on low-gluten flour as the main raw material and alkali-soluble Poria polysaccharid...[Objectives]This study was conducted to obtain the best formula for alkali-soluble Poria polysaccharide tough biscuits.[Methods]Based on low-gluten flour as the main raw material and alkali-soluble Poria polysaccharide,baking soda,salt,butter and sugar as auxiliary materials,single-factor test and orthogonal optimization of the addition amounts of alkali-soluble Poria polysaccharide,salt and white sugar were carried out,and the prepared biscuits were subjected to sensory evaluation to get the best formula.[Results]The optimal process parameters of the alkali-soluble Poria polysaccharide tough biscuits were:alkali-soluble Poria polysaccharide addition amount 12%,salt addition amount 1.5%,white sugar addition amount 14%,and the sensory evaluation score obtained under this condition was 88.7.[Conclusions]The alkali-soluble Poria polysaccharide biscuits prepared according to the best formula had the characteristics of neat shape,uniform thickness,fine internal structure,obvious layers,and crisp,rosy and sweet taste.This study increases the flavor and nutritional value of biscuits,enriches the types of biscuits,and provides a certain theoretical basis for the production of alkali-soluble Poria polysaccharide tough biscuits.展开更多
文摘As a typical representative and main technicalmeans of advanced manufacturing technology,robotic technology plays an important role in raisingan enterpse’s engineering level, improving its prod-uct quality and productivity, and realizing civilizedproduction. Currently, there are nearly one millionrobots of various kinds, which are employed widelyin different fields of manufacturing industry. Robot-ics is now one of the high technologies, which arecompetitively developed by the developed coun-
基金Supported by Chinese Agriculture Special Scientific Research(200903002)The SpecialFunds for Major Chongqing Science and Technology Projects(cstc2012ggB8005)The Special Funds for Chongqing Agriculture Scientific Research and Extention~~
文摘This paper focus on the ratoon rice, which with the features of south Chi-na paddy cultivation technology. First, the development of the technology research on ratoon rice in southwest ecotope of China was briefly reviewed. Second, the key technical measures of the ratoon rice production were described in detail. At last, the application effect of the ratoon rice production technology was described accu-rately, which based on the production practice in recent years. The purpose of this article is promoting the research and extension of the ratoon rice technology more widely in world’s main rice-producing areas, especial y in the suitable area where the light and heat resources are rich.
文摘This article mainly summarizes various aspects of hydrogen peroxide(H2O2)production through the anthraquinone route,including hydrogenation catalysts,working solution,regeneration technique,hydrogenation reactors,and environmental protection.The advances and breakthrough of SINOPEC in the production of H2O2 through the anthraquinone route is presented in this review,highlighting recent innovative technology on these aspects developed independently.The technical prospect and scientific challenges associated with the direct synthesis method from hydrogen and oxygen are also briefly discussed.
文摘After two decades＇ endeavor, the Research Institute of Petroleum Processing （RIPP） has successfully de- veloped a green caprolactam （CPL） production technology. This technology is based on the integration of titanium silicate （TS）-I zeolite with the slurry-bed reactor for the ammoximation of cyclohexanone, the integration of silicalite-1 zeolite with the moving-bed reactor for the gas-phase rearrangement of cyclohex- anone oxime, and the integration of an amorphous nickel （Ni） catalyst with the magnetically stabilized bed reactor for the purification of caprolactam. The world＇s first industrial plant based on this green CPL produc- tion technology has been built and possesses a capacity of 200 kt·a-1. Compared with existing technologies, the plant investment is pronouncedly reduced, and the nitrogen （N） atom utilization is drastically improved. The waste emission is reduced significantly; for example, no ammonium sulfate byproduct is produced. As a result, the price difference between CPL and benzene drops. In 2015, the capacity of the green CPL produc- tion technology reached 3 ×10-6 t·a-1, making China the world＇s largest CPL producer, with a global market share exceeding 50%.
文摘Recent progress in the production and technology of ductile cast iron castings in China is reviewed. The manufacture and process control of as-cast ductile iron are discussed. The microstructure, properties and application of partial austenitization normalizing ductile iron and austempered ductile iron (ADI) are briefly depicted. The new development of ductile iron production techniques, such as cored-wire injection (wire-feeding nodularization) process, tundish cover ladle nodularizing process, horizontal continuous casting, and EPC process (lost foam) for ductile iron castings, etc., are summarized.
基金Supported by the CNPC Basic and Prospective Project (2021DJ45)。
文摘The shale oil and gas exploitation in China is technically benchmarked with the United States in terms of development philosophy,reservoir stimulation treatment,fracturing parameters,fracturing equipment and materials,oil/gas production technology,and data/achievements sharing.It is recognized that the shale oil and gas exploitation in China is weak in seven aspects:understanding of flow regimes,producing of oil/gas reserves,monitoring of complex fractures,repeated stimulation technology,oil/gas production technology,casing deformation prevention technology,and wellbore maintenance technology.Combined with the geological and engineering factors of shale oil and gas in China,the development suggestions of four projects are proposed from the macro-and micro-perspective,namely,basic innovation project,exploitation technology project,oil/gas production stabilization project,and supporting efficiency-improvement project,so as to promote the rapid,efficient,stable,green and extensive development of shale oil and gas industry chain and innovation chain and ultimately achieve the goal of“oil volume stabilizing and gas volume increasing”.
文摘The demands for improved engine performance,fuel economy,durability,and lower emissions provide a continual challenge for engine designers.The use of Compacted Graphite Iron(CGI)has been established for successful high volume series production in the passenger vehicle,commercial vehicle and industrial power sectors over the last decade.The increased demand for CGI engine components provides new opportunities for the cast iron foundry industry to establish efficient and robust CGI volume production processes,in China and globally.The production window range for stable CGI is narrow and constantly moving.Therefore,any one step single addition of magnesium alloy and the inoculant cannot ensure a reliable and consistent production process for complicated CGI engine castings.The present paper introduces the SinterCast thermal analysis process control system that provides for the consistent production of CGI with low nodularity and reduced porosity,without risking the formation of flake graphite.The technology is currently being used in high volume Chinese foundry production.The Chinese foundry industry can develop complicated high demand CGI engine castings with the proper process control technology.
基金funded by the National Key Research and Development Program of China(Grant No.2018YFE0208200)the National Natural Science Foundation of China(Grant No.42102352)。
文摘A new gas hydrate reservoir stimulation method of in-situ fracturing with transient heating is proposed, in line with analysis of the technological bottlenecks faced by marine gas hydrate production. This method injects the developed chemical reagents into a hydrate reservoir through hydraulic fracturing, releasing heat during the chemical reaction to increase the hydrate decomposition rate. The chemical reaction product furthermore has a honeycomb structure to support fractures and increase reservoir permeability. Based on the geological model of natural gas hydrate in the South China Sea, three development methods are simulated to evaluate hydrate production capacity, consisting of horizontal well, fractured horizontal well and in-situ fracturing with transient heating well. Compared with the horizontal well, the simulation results show that the cumulative gas production of the fractured horizontal well in one year is 7 times that of the horizontal well, while the cumulative gas production of in-situ fracturing with transient heating well is 12 times that of the horizontal well, which significantly improves daily efficiency and cumulative gas production. In addition, the variation patterns of hydrate saturation and temperature-pressure fields with production time for the three exploitation plans are presented, it being found that three sensitive parameters of fracture conductivity, fracture half-length and fracture number are positively correlated with hydrate production enhancement. Through the simulations, basic data and theoretical support for the optimization of gas hydrate reservoir stimulation scheme has been provided.
文摘The product system of high strength low alloy steels(HSLA)produced by Wuhan Iron and Steel(Group)Corporation(WISCO)was presented.A series of high performance structural steels have been developed for important construction projects around the world in different areas,such as bridge,pressure vessel,pipe line,shipbuilding,architecture,machinery and railway wagons.In order to promote the development of large heat input welding steel,high grade thick pipeline steel and long span bridge steel,a lot of advanced production technologies have been achieved through intensive investigation,such as the control of high purity,high homogenization and free defects in steel slabs,the rules of high melting point particle formation and distribution in micro and nano scale during steel production,and the TMCP technology for ultra low carbon bainite steel for medium and heavy plates.WISCO will carry on research and application of economic and weather-resistant steels and promote the developing and producing technologies of HSLA steel.
基金Special Fund for Basal Scientific Research of Guangxi Academy of Agricultural Sciences(GNK 2021YT017,GNK 2017YM08)Science and Technology Development Fund of Maize Research Institute,Guangxi Academy of Agricultural Sciences(GYK 2017010)Natural Science Foundation Project of Guangxi(2018JJB130196).
文摘To meet the demand of maize production in Guangxi and even the southwest region of China and realize the upgrading and undating of maize varieties which will continuously improve the yield and quality of maize,a new big-ear maize variety Guidan 903 with high yield,stable yield and good quality was established by the Maize Research Institute of Guangxi Academy of Agricultural Sciences with two self-selected inbred line GRL17349 and GRL21191 as female and male parents seperately.The average yield of this variety were 7429.5 and 7000.5 kg/hm^(2)in Guangxi Maize Regional Trial and Production Test respectively,which increased by 6.3%and 5.6%than the control(Guidan162).It was approved by Guangxi Zhuang Autonomous Region Crop Variety Certification Committee in June 2020(Approval No.Gui sheng yu 2020083).Determined by the Cereal Quality Supervision and Testing Center of Ministry of Agriculture and Rural Affairs(Bejjing),the grain bulk density,ratio of crude protein,crude fat,crude starch and lysine of Guidan 903 were 782 g/L,9.41%,6.19%,71.45%,0.35%respectively.This variety has the characterisics of strong resistance to collapse and disease,good quality,high and stable yield and wide adaptability.Furthermore,its seed yield is high with easy production technology and low cost.
基金Supported by the National Science & Technology Pillar Program during the Eleventh Five-Year Plan Period(2006BAD10A14)
文摘According to the objective reality in Yunnan Province,such as great difference of weather,a great proportion of minorities,technological backwardness of agricultural production,low conversion rate of research accomplishments,and a limited number of agricultural technical personnel,ASP.NET technique and SQL Server 2005 database technique are adopted.Database platform of county agricultural production technology in Yunnan Province is established by using B/S structure.This platform includes presentation layer,application layer,and data layer,involving regional information,technology column information,technology classification information,technology content and other databases.It has six functional modules,namely information browse,system management,regional maintenance,technical section maintenance,category maintenance and technical information release,integrating crop cultivation,livestock breeding,economic forest management,plant protection,agricultural products processing,agricultural machinery use and other agricultural technical information.This platform can exchange information dynamically with the client,perform the query request from users,and send the result to users.This database platform has friendly interface,profuse information,high pertinency and so on,which offers rich and reliable information resources to farmers,agricultural technical personnel,and government.At present,this platform has been popularized in some areas of Yunnan Province and has obtained good results.
文摘The determining factor of<em> Setaria italica </em>(L.) P. Beauv. is the coupling of its flowering stage and outcrossing rate which leads to low and unstable seed yields in self-pollinated foxtail millet hybrids and thereby limits their large-scale application. In this study, Datong 27, Datong 29 and gu 83 were screened and identified through meticulous observations of their pollination habitats. High exposure rate, degree of exposure and plump of stigma are good factors to accept foreign pollen. Datong 27 and Datong 29 have some additional characteristics, such as long filaments and exposed and full anthers that contain a large amount of pollen. We transformed into a series of stigma-exposed and plump sterile lines that easily accepted exotic pollen. New restorer lines with anthers that were full of powder and exhibited quick recovery, which improved the parental lines’ heterosexual characteristics. By tracking and monitoring the leaf development of the new sterile and restorer lines, a coupling law of leaf development was determined and a series of flowering control measures were formulated. These factors ensured that the parental lines encounter one another during the flowering stage. By utilizing fertilizer and water, the vitality of the female stigma, amount of powder scattered and powder loosening time were prolonged, which increased hybrid seed yields from 1500 to 3000 kg/hm<sup>2</sup>. These findings were helpful in resolving the technical problems of seed production that restricted the propagation of foxtail millet hybrids and supporting future large-scale applications.
基金the Guangdong Planning Office of Philosophy and Social Science(Grant No.GD22XYS04).
文摘Background:As the market demands change,SMEs(small and medium-sized enterprises)have long faced many design issues,including high costs,lengthy cycles,and insufficient innovation.These issues are especially noticeable in the domain of cosmetic packaging design.Objective:To explore innovative product family modeling methods and configuration design processes to improve the efficiency of enterprise cosmetic packaging design and develop the design for mass customization.Methods:To accomplish this objective,the basic-element theory has been introduced and applied to the design and development system of the product family.Results:By examining the mapping relationships between the demand domain,functional domain,technology domain,and structure domain,four interrelated models have been developed,including the demand model,functional model,technology model,and structure model.Together,these models form the mechanism and methodology of product family modeling,specifically for cosmetic packaging design.Through an analysis of a case study on men’s cosmetic packaging design,the feasibility of the proposed product family modeling technology has been demonstrated in terms of customized cosmetic packaging design,and the design efficiency has been enhanced.Conclusion:The product family modeling technology employs a formalized element as a module configuration design language,permeating throughout the entire development cycle of cosmetic packaging design,thus facilitating a structured and modularized configuration design process for the product family system.The application of the basic-element principle in product family modeling technology contributes to the enrichment of the research field surrounding cosmetic packaging product family configuration design,while also providing valuable methods and references for enterprises aiming to elevate the efficiency of cosmetic packaging design for the mass customization product model.
基金financial support of National Nature Science Foundation (21376178)TIDA giant growth plan (2011-XJR13020)+3 种基金Tianjin Science and technology support program (12ZCDZSF06900)Tianjin University of Science and Technology fund for scientific research (20120119)Tianjin education commission program (20130509)Research fund for the doctoral program of higher education of China(20131208120001)
文摘As a natural mineral,Potash Magnesium Sulphate fertilizer has a quite high nutrient utilization rate without affecting soil p H in long time running related to Potassium Sulphate.And to displace Potassium Sulphate with Potash
文摘Based on a great number of laboratory experiments, a new technique has been developed for producing wear resistant ring-hammers. In this technology, lost foam casting with iron sand was combined to make mold; a special alloy was used to inoculate the molten steel, and proper heat treatment was used to further improve mechanical properties of wear resistant ring-hammers. The influence of this new production technology on the microstructure and mechanical properties of wear resistant ring-hammers was studied. Results show that iron sand molding, having the inherent characteristic of sand molding, changes the type of metallic compounds, refines crystal grains and increases the fineness of microstructure. Practical experience verified that the properties of the ring-hammers produced with this new technique are as follows: tensile strength (Rm) 720 MPa, impact toughness (ak) > 210 J·cm-2 and hardness > 200 HB. After water quenching from 1,080℃ (holding for 4 h) and tempering at 320℃ for 3 h, the best wear resistance is obtained, and the wear resistance is 1.6 times higher than that of common high manganese ring-hammers.
文摘Ultra-thin hot-rolled strip is the developing result of the modern plate and strip rolling technology and can be used to replace cold-rolled products for energy saving and emission reduction.This work reviews recent progress and breakthroughs in this field by focusing on three recent technologies,namely the conventional strip with hot coil box and endless rolling,thin slab continuous casting and rolling/semi endless rolling,and endless compact rolling.In summary,ensuring high-quality production is an important bottleneck for ultra-thin strip and ferritic hot rolling by endless compact rolling.This production technology has strong feasibility and broad prospects for future development.
基金Sponsored by Key Agricultural Sci-Tech Program of Shaanxi Province(2008K01-05)
文摘Preservative-treated pinewood is mildewproof, anticorrosive and mothproof, with the long durability and environmental protection as its fine performance. It has become an important material for landscape construction for the wide pine material sources, low price, less deformation, moderate density, good fl exibility and strength, fine texture and good integration with the natural environment. On the basis of introducing pinewood species, preservatives and production process of preservative-treated pinewood, this paper focuses on the application of preservative-treated pinewood used in log cabin, pavilion, service buildings and other garden timber architecture, as well as roads, platforms, bridges, rails, gallery frames, pergolas and other opuscules.
基金Supported by the First Batch of Planned Revised Local Standards of Gansu Provincial Bureau of Quality Supervision,Inspection and Quarantine of the People's Republic of China in 2016(2016-T-015)
文摘According to the experiment and production practice,this paper brings forward the technical regulations on the production technology,the environmental conditions of production area,the output index,the site selection and land preparation,the variety selection and seed quality,the fertilization,the sowing,the field management,the pest and disease control,the harvesting,the storage,the filing etc. about the adzuki beans in Qingyang City.
基金High-level Cultivation Project of Huanggang Normal University(04201711903)Youth Talent Project of Hubei Provincial Department of Education(03201718402)。
文摘[Objectives]This study was conducted to obtain the best formula for alkali-soluble Poria polysaccharide tough biscuits.[Methods]Based on low-gluten flour as the main raw material and alkali-soluble Poria polysaccharide,baking soda,salt,butter and sugar as auxiliary materials,single-factor test and orthogonal optimization of the addition amounts of alkali-soluble Poria polysaccharide,salt and white sugar were carried out,and the prepared biscuits were subjected to sensory evaluation to get the best formula.[Results]The optimal process parameters of the alkali-soluble Poria polysaccharide tough biscuits were:alkali-soluble Poria polysaccharide addition amount 12%,salt addition amount 1.5%,white sugar addition amount 14%,and the sensory evaluation score obtained under this condition was 88.7.[Conclusions]The alkali-soluble Poria polysaccharide biscuits prepared according to the best formula had the characteristics of neat shape,uniform thickness,fine internal structure,obvious layers,and crisp,rosy and sweet taste.This study increases the flavor and nutritional value of biscuits,enriches the types of biscuits,and provides a certain theoretical basis for the production of alkali-soluble Poria polysaccharide tough biscuits.
