Ecological agricultural engineering is a necessary innovation and expansion of China’s agricultural engineering science and technology that aims to meet the overall, the whole chain and the coordinated development ne...Ecological agricultural engineering is a necessary innovation and expansion of China’s agricultural engineering science and technology that aims to meet the overall, the whole chain and the coordinated development needs of the whole system for rural revitalization. Focusing on ecological agricultural engineering, this paper introduces its development and early practice and technology, and also discusses its development direction, development path, and important role in boosting rural revitalization. The development of ecological agricultural engineering will play an important role in China’s agricultural production practice, agricultural engineering discipline construction and agricultural and rural modernization.展开更多
The continuous enrichment of heavy metals in soils has caused potential harm to groundwater.Quantitative methods to evaluate the harm of heavy metals in soil to groundwater are lacked in previous studies.Based on the ...The continuous enrichment of heavy metals in soils has caused potential harm to groundwater.Quantitative methods to evaluate the harm of heavy metals in soil to groundwater are lacked in previous studies.Based on the theory of groundwater circulation and solid-liquid equilibrium,a simple and easy-touse flux model of soil heavy metals migrating to groundwater is constructed.Based on groundwater environmental capacity,an innovative method for evaluating the harm of heavy metals in soil to groundwater is proposed,which has been applied in Hunchun Basin,Jilin Province,China.The results show that the fluxes of soil heavy metals into groundwater in the study area are Zn,Cu,As,Pb,Cd,Ni,and Hg in descending order.The content of heavy metals in groundwater(As,Hg,Cu,Pb,Zn,Ni,and Cd)in most areas has not risen to the threshold of environmental capacity within 10 years.The harm levels of soil heavy metals to groundwater in the most townships soils are at the moderate level or below.This evaluation method can quantify the flux of soil heavy metals into groundwater simply and quickly,determine the residual capacity of groundwater to heavy metals,evaluate the harm level of soil heavy metals to groundwater,provide support for relevant departments to carry out environmental protection of soil and groundwater,and provide a reference to carry out similar studies for related scholars.展开更多
Tanzania is located in eastern Africa with a predominantly agricultural ecomomy,the potential for developing and utilizing cultivated land are promising,but scientific guidance is required.B,Zn and Se are essential mi...Tanzania is located in eastern Africa with a predominantly agricultural ecomomy,the potential for developing and utilizing cultivated land are promising,but scientific guidance is required.B,Zn and Se are essential micronutrients for plants and human body with crucial biological functions,in particular,Se is significant for human health and considered as“the king of anti-cancer”.As these elements required by human or plants are mainly absorbed from soil directly or indirectly,therefore,it is important to understand the contents and distributions of them in the soil of cultivated land for guiding agricultural production.In this work,low-density geochemical survey at the scale of 1∶1000000 was carried out in Tanzania,and the results show that the concentrations of B,Zn and Se in stream sediments are low and their distributions are heterogeneous.According to the distributions of geological units,the existing cultivated land resources can be divided into five regions in Tanzania.Compared with the national background values,the concentrations of B,Zn and Se are insufficient overall but enriched locally in these regions.In general,element concentrations in stream sediments and soil have a positive correlation because of their similar sources,which is essential in agriculture application.Based on the information provided by low-density geochemical data and maps,the Se-sufficient and Se-rich regions were delineated in Tanzania,where can be used to develop Se-rich industries.Finally,this paper believes that geochemical survey is a powerful tool for cultivated land evaluation,agriculture management and land development.展开更多
Various post-harvest processes of rice are commonly employed,especially during the off-season,to ensure its consumption feasibility,which often affect the grain quality.Different forms of drying,storage and processing...Various post-harvest processes of rice are commonly employed,especially during the off-season,to ensure its consumption feasibility,which often affect the grain quality.Different forms of drying,storage and processing of rice are evaluated to identify their effects on grain quality.Microwave drying has emerged as an alternative to the widely-used intermittent-drying and fixed-bed-dryer methods of drying paddy rice.Control of drying-air temperatures(between 40℃ and 60℃)according to the rice variety can improve quality,especially for exotic varieties.Keeping stored grain in hygroscopic balance,with water content between 11%to 15%,at temperatures between 16℃ and 20℃ and with intergranular relative humidity near 60%,allows 12 months of storage in a controlled environment without significant deterioration.Other innovations,notably the application of artificial refrigeration to grain stored in bulk in vertical cylindrical silos and the use of impermeable packaging for storage,ensure the conservation of grain mass.The different stages and equipments used to obtain polished,brown and parboiled rice result in significant changes in the nutritional value of rice because of the removal of the outermost layers of the grains.Polishing reduces the nutritional value and physical homogeneity of rice.Brown rice retains more bioactive compounds and nutrients because it does not lose the outer layer of the grains in the polishing processes.Parboiled rice,although less nutritious than brown rice,has better grain integrity and milling yield and less loss of nutrients than white rice.展开更多
Diesel engine alternative fuels, such as methanol and biodiesel, are beneficial to reduce diesel engine emission. In order to study the influence of methanol and biodiesel on the performance, economy and emission of s...Diesel engine alternative fuels, such as methanol and biodiesel, are beneficial to reduce diesel engine emission. In order to study the influence of methanol and biodiesel on the performance, economy and emission of small agricultural diesel engine, the physical-chemical properties(cetane number, lower heat value(LHV), viscosity, etc.) of methanol and biodiesel were analyzed. The methanol and biodiesel showed good complementary property to some extent. When a large proportion of methanol was added into biodiesel, the cetane number of the methanol/biodiesel blend will be greatly reduced. Since the cetane number of the blend fuel has great influence on the combustion process of diesel engine, after testing for blending ratio of methanol/biodiesel, the blend was prepared with 5%(BM5), 10%(BM10) and 15%(BM15) methanol, respectively. Di-Tert-Butyl Peroxide(DTBP) was chosen as a cetane number improver to be added into methanol/biodiesel blend. 0.25%, 0.50% and 0.75% of DTBP was added into BM15. The bench test was carried out on a 186 FA diesel engine to study the effect of methanol and DTBP on the engine performance and emissions. The results show that, at rated condition, compared with biodiesel, the NO;concentration of BM5, BM10 and BM15 is reduced by 5.02%, 33.85% and 21.24%, and smoke is reduced by 5.56%, 22.22% and 55.56%. However, the engine power is also reduced by 5.77%, 14.23% and 25.41%, and the brake specific energy consumption is increased by 3.31%, 7.78% and 6.37%. The addition of DTBP in methanol/biodiesel could recover the engine power to the level of diesel. DTBP shows good effect on the reduction of the brake specific energy consumption and NO_(x), CO, HC concentration, but a little increase of exhaust smoke.展开更多
Existing rape combine harvester with a cyclone separation cleaning device has the challenge that the loss rate and the cleaning rate increase and decrease simultaneously.A cleaning process route was proposed,which inv...Existing rape combine harvester with a cyclone separation cleaning device has the challenge that the loss rate and the cleaning rate increase and decrease simultaneously.A cleaning process route was proposed,which involves the cyclone separation cleaning device removing light and tiny impurities,and the cylinder sieve device removing coarse and long impurities such as pod shells and short stems.A novel cleaning system combining the cyclone separation cleaning device and cylinder sieve cleaning devices was designed.The ranges of the structure and operation parameters for each component were analyzed based on kinematics and dynamic analysis.A four-factor five-level quadratic orthogonal test was carried out,in which the loss rate and cleaning rate were taken as the evaluation indexes.The velocity at the suction port,the rotation speed of the cylinder sieve,the screw pitch of the spiral blade and the diameter of the sieve hole were taken as the influencing factors.The orthogonal test results showed that the cleaning system performed best at a rotation speed of the winnower is 600 r/min,an airflow velocity at the suction port is 18.25 m/s,a rotation speed of the cylinder sieve is 87 r/min,a screw pitch of the spiral blade is 440 mm and a diameter of the sieve hole is 4.48 mm.At this time,the loss rate of the cleaning system is 3.22%,and the cleaning rate is 95.67%.Compared to the conventional cyclone separation cleaning device,the loss rate is reduced by 2.17%and the cleaning rate is increased by 1.05%.This study can provide a reference for the optimal cleaning system design for rape combine harvesters.展开更多
The Clarivate Analytics Journal Citation Reports(JCR)and Web of Science(WoS)platforms are arguably the most influential journal citation/metric databases worldwide.Journals must first be indexed in the WoS Core Collec...The Clarivate Analytics Journal Citation Reports(JCR)and Web of Science(WoS)platforms are arguably the most influential journal citation/metric databases worldwide.Journals must first be indexed in the WoS Core Collection(CC)before being indexed in the JCR.The JCR and WoS platform are separate Clarivate Analytics products,but the JCR is included in the WoS platform for organizations that purchase both databases.The analysis for this study focused on citation data reported in the 2017 JCR(based on 2016 citation data)and other data reported in the WoS CC up to 2016.A total of 14 journals are indexed in the 2017 JCR agricultural engineering category;however,only 13 journals are analyzed in this because one journal was listed by mistake.Six of the 13 journals are published by large for-profit publishers(i.e.,Elsevier B.V.or Springer Verlag)and the other seven are published by respective professional societies.The journals were analyzed as a function of type(specialty versus comprehensive),type of publisher and publication frequency,metrics such as the Journal Impact Factor(JIF),volumes of articles published by year and journal,and the source institutions and countries of published articles.Bioenergy-and industrial crop-focused journals included in the 2017 JCR agricultural engineering category manifest the strongest overall metrics,as evidenced by relatively high JIF scores:Bioresource Technology(4.917),Biomass and Bioenergy(3.219)and Industrial Crops and Products(3.181).In contrast,the highest JIF reported in the 2017 JCR for a comprehensive agricultural engineering journal was 2.044 for Biosystems Engineering.During 2006 to 2016,the number of articles indexed in the Core Collection for the JCR agricultural engineering category rose from 1,124 to 4,078,an increase of 263%.Over 70% of the total articles published in 2016 were published in the three bioenergy-or industrial-crop focused journals.The top three countries that published the highest levels of WoS Core Collection agricultural engineering articles in 2016 were China(1132),United States(669)and Brazil(474).The similar top publishing institutions were the United States Department of Agriculture(USDA;136),Chinese Academy of Sciences(CAS;136)and Indian Council for Scientific and Industrial Research(CSIR;79).The results of the study also show that publishing by Chinese scientists in the 13 journals indexed in the JCR Agricultural Engineering(AE)category is rapidly increasing,with seven research institutions ranked in the global top 20 in 2016,based on studies published in journals indexed in the JCR agricultural engineering category.The analysis also reveals that the specialty journals(e.g.,the three bioenergy-focused journals)are not directly comparable with the comprehensive agricultural engineering journals and should potentially be excluded from future versions of the JCR and WoS CC AE categories.展开更多
Based on the technical characteristics of agricultural engineering,this research developed a theoretical system and methodology on the integration of agricultural engineering technology by studying the classification ...Based on the technical characteristics of agricultural engineering,this research developed a theoretical system and methodology on the integration of agricultural engineering technology by studying the classification of constituent technologies,technological evaluation and integration,and optimization of agricultural engineering patterns.Thirty-two integrated agricultural engineering patterns are proposed according to the methodology for different regions with different local industry backgrounds,operating scales and objects.This research provides a solid foundation for the study of the agricultural engineering technical scheme,patterns and construction standards,which can help to provide a comprehensive solution to problems relevant to modern agriculture.展开更多
The deterioration of global environment,decreasing of biological diversity,increasing of natural disasters,exhausting of biological resources and acceleration of desertification emphasize the need to provide the human...The deterioration of global environment,decreasing of biological diversity,increasing of natural disasters,exhausting of biological resources and acceleration of desertification emphasize the need to provide the human-beings with the suitable environments.Nowadays,precision agriculture and precision forestry have been emphasized to obtain the maximum output with minimum input and the least impact on the environment,so agricultural and forestry engineering systems require multi-disciplinary design groups to deal with some common interests and the concept of biomechinfotronics is needed.The word“biomechinfotronic”is introduced to describe the multidisciplinary aspects of this complex system.In the paper,the prospects,mission analysis,education system,research areas of biomechinfotronics are studied.The particular characteristics of biomechinfotronics are the synergistic integration of biological engineering with mechatronics,bioinformatics,infotronics,bioelectronics and intelligent computer systems for conducting common research and development and for recruiting and training students with wide specialties.展开更多
Agriculture and biological engineering are the foundation of agricultural modernization,and related countries have also issued relevant policies to guide the development of agriculture and biotechnology.Agricultural a...Agriculture and biological engineering are the foundation of agricultural modernization,and related countries have also issued relevant policies to guide the development of agriculture and biotechnology.Agricultural and biological engineering experts are the intellectual resources in the field.At present,there is less research on the management and maintenance of agricultural and biological engineering experts,and there is a lack of software systems in this area.In order to realize the management and maintenance of agricultural and biological engineering expert information,a service platform for the international agricultural and biological engineering expert system based on the B/S framework has been developed.The background of the system used C#as the development language,and the foreground used JavaScript technology and Bootstrap.The software adopted ASP.NET MVC as the web development framework and used the Entity Framework to operate the SQL Server background database.The system has the function of searching and querying agricultural and biological engineering expert information according to keywords,and implements the functions of adding,deleting,and modifying data records,and the function of generating spreadsheets and importing spreadsheet data.The development of this system provides effective management tools for the maintenance and construction of agricultural and biological engineering expert databases and lays a good foundation for the construction of agricultural and biological engineering think tanks.展开更多
General Introduction Frontiers of Agricultural Science and Engineering(FASE)is an authoritative source for professionals with interests encompassing agricultural science and engineering,supervised by the Chinese Acade...General Introduction Frontiers of Agricultural Science and Engineering(FASE)is an authoritative source for professionals with interests encompassing agricultural science and engineering,supervised by the Chinese Academy of Engineering,administered by Higher Education Press of展开更多
Frontiers of Agricultural Science and Engineering(FASE)is an international journal for research on agricultural science and engineering.The journal’s aim is to report advanced and innovative scientific proceedings in...Frontiers of Agricultural Science and Engineering(FASE)is an international journal for research on agricultural science and engineering.The journal’s aim is to report advanced and innovative scientific proceedings in agricultural field including Crop Science,Agricultural Biotechnology,Horticulture,Plant Protection,Agricultural Engineering,Forestry Engineering,Agricultural Resources,Animal Husbandry and Veterinary Medicine,展开更多
Colleagues,It is our great pleasure to introduce you to the Frontiers of Agricultural Science and Engineering(FASE),a new international journal launched in 2014.FASE was founded jointly by the Chinese Academy of Engin...Colleagues,It is our great pleasure to introduce you to the Frontiers of Agricultural Science and Engineering(FASE),a new international journal launched in 2014.FASE was founded jointly by the Chinese Academy of Engineering,China Agricultural University and展开更多
Frontiers of Agricultural Science and Engineering(FASE)is an international journal for research on agricultural science and engineering.The journal’s aim is to report advanced and innovative scientific proceedings in...Frontiers of Agricultural Science and Engineering(FASE)is an international journal for research on agricultural science and engineering.The journal’s aim is to report advanced and innovative scientific proceedings in agricultural field including Crop Science,Agricultural Biotechnology,Horticulture,Plant Protection,Agricultural Engineering,Forestry Engineering,Agricultural Resources,Animal Husbandry and Veterinary Medicine,展开更多
Frontiers of Agricultural Science and Engineering(FASE)is an international journal for research on agricultural science and engineering.The journal’s aim is to report advanced and innovative scientific proceedings in...Frontiers of Agricultural Science and Engineering(FASE)is an international journal for research on agricultural science and engineering.The journal’s aim is to report advanced and innovative scientific proceedings in agricultural field including Crop Science,展开更多
Frontiers of Agricultural Science and Engineering(FASE)is an international journal for research on agricultural science and engineering.The journal’s aim is to report advanced and innovative scientific proceedings in...Frontiers of Agricultural Science and Engineering(FASE)is an international journal for research on agricultural science and engineering.The journal’s aim is to report advanced and innovative scientific proceedings in agricultural field including Crop Science,Agricultural Biotechnology,Horticulture,Plant Protection,Agricultural Engineering,展开更多
Frontiers of Agricultural Science and Engineering(FASE)is an international journal for research on agricultural science and engineering.The journal’s aim is to report advanced and innovative scientific proceedings in...Frontiers of Agricultural Science and Engineering(FASE)is an international journal for research on agricultural science and engineering.The journal’s aim is to report advanced and innovative scientific proceedings in agricultural field including Crop Science,Agricultural Biotechnology,Horticulture,Plant Protection,Agricultural Engineering,展开更多
General Introduction Frontiers of Agricultural Science and Engineering(FASE)is an authoritative source for professionals with interests encompassing agricultural science and engineering,supervised by the Chinese Acade...General Introduction Frontiers of Agricultural Science and Engineering(FASE)is an authoritative source for professionals with interests encompassing agricultural science and engineering,supervised by the Chinese Academy of Engineering,administered by Higher Education Press of China and China Agricultural University,and published by Higher Education Press of China on展开更多
文摘Ecological agricultural engineering is a necessary innovation and expansion of China’s agricultural engineering science and technology that aims to meet the overall, the whole chain and the coordinated development needs of the whole system for rural revitalization. Focusing on ecological agricultural engineering, this paper introduces its development and early practice and technology, and also discusses its development direction, development path, and important role in boosting rural revitalization. The development of ecological agricultural engineering will play an important role in China’s agricultural production practice, agricultural engineering discipline construction and agricultural and rural modernization.
基金supported by the project of China Geology Survey(12120115032801,DD20190340)。
文摘The continuous enrichment of heavy metals in soils has caused potential harm to groundwater.Quantitative methods to evaluate the harm of heavy metals in soil to groundwater are lacked in previous studies.Based on the theory of groundwater circulation and solid-liquid equilibrium,a simple and easy-touse flux model of soil heavy metals migrating to groundwater is constructed.Based on groundwater environmental capacity,an innovative method for evaluating the harm of heavy metals in soil to groundwater is proposed,which has been applied in Hunchun Basin,Jilin Province,China.The results show that the fluxes of soil heavy metals into groundwater in the study area are Zn,Cu,As,Pb,Cd,Ni,and Hg in descending order.The content of heavy metals in groundwater(As,Hg,Cu,Pb,Zn,Ni,and Cd)in most areas has not risen to the threshold of environmental capacity within 10 years.The harm levels of soil heavy metals to groundwater in the most townships soils are at the moderate level or below.This evaluation method can quantify the flux of soil heavy metals into groundwater simply and quickly,determine the residual capacity of groundwater to heavy metals,evaluate the harm level of soil heavy metals to groundwater,provide support for relevant departments to carry out environmental protection of soil and groundwater,and provide a reference to carry out similar studies for related scholars.
基金the cooperation projects between China Geological Survey and geological survey institutions of Africa(DD20190439,DD20160108,DD20221801)。
文摘Tanzania is located in eastern Africa with a predominantly agricultural ecomomy,the potential for developing and utilizing cultivated land are promising,but scientific guidance is required.B,Zn and Se are essential micronutrients for plants and human body with crucial biological functions,in particular,Se is significant for human health and considered as“the king of anti-cancer”.As these elements required by human or plants are mainly absorbed from soil directly or indirectly,therefore,it is important to understand the contents and distributions of them in the soil of cultivated land for guiding agricultural production.In this work,low-density geochemical survey at the scale of 1∶1000000 was carried out in Tanzania,and the results show that the concentrations of B,Zn and Se in stream sediments are low and their distributions are heterogeneous.According to the distributions of geological units,the existing cultivated land resources can be divided into five regions in Tanzania.Compared with the national background values,the concentrations of B,Zn and Se are insufficient overall but enriched locally in these regions.In general,element concentrations in stream sediments and soil have a positive correlation because of their similar sources,which is essential in agriculture application.Based on the information provided by low-density geochemical data and maps,the Se-sufficient and Se-rich regions were delineated in Tanzania,where can be used to develop Se-rich industries.Finally,this paper believes that geochemical survey is a powerful tool for cultivated land evaluation,agriculture management and land development.
基金CAPES(Coordination for the Improvement of Higher Education Personnel)(Financial Code 001)CNPq(National Council for Scientific Technological Development)+1 种基金FAPERGS-RS(Research Support Foundation of the State of Rio Grande do Sul)UFSM(Federal University of Santa Maria)-Research Group at Postharvest Innovation:Technology,Quality and Sustainability,for their financial contributions。
文摘Various post-harvest processes of rice are commonly employed,especially during the off-season,to ensure its consumption feasibility,which often affect the grain quality.Different forms of drying,storage and processing of rice are evaluated to identify their effects on grain quality.Microwave drying has emerged as an alternative to the widely-used intermittent-drying and fixed-bed-dryer methods of drying paddy rice.Control of drying-air temperatures(between 40℃ and 60℃)according to the rice variety can improve quality,especially for exotic varieties.Keeping stored grain in hygroscopic balance,with water content between 11%to 15%,at temperatures between 16℃ and 20℃ and with intergranular relative humidity near 60%,allows 12 months of storage in a controlled environment without significant deterioration.Other innovations,notably the application of artificial refrigeration to grain stored in bulk in vertical cylindrical silos and the use of impermeable packaging for storage,ensure the conservation of grain mass.The different stages and equipments used to obtain polished,brown and parboiled rice result in significant changes in the nutritional value of rice because of the removal of the outermost layers of the grains.Polishing reduces the nutritional value and physical homogeneity of rice.Brown rice retains more bioactive compounds and nutrients because it does not lose the outer layer of the grains in the polishing processes.Parboiled rice,although less nutritious than brown rice,has better grain integrity and milling yield and less loss of nutrients than white rice.
基金Sponsored by the Open Project of State Key Laboratory of Internal Combustion Engine Combustion,Tianjin University(Grand No.K2020-12)the Project of Natural Science Foundation of Jiangsu Province(Grant No.BK20200910)+1 种基金the Natural Science Research Projects in Jiangsu Higher Education Institutions(Grant No.20KJB470015)the Provincial Engineering Research Center for New Energy Vehicle Intelligent Control and Simulation Test Technology of Sichuan(Grant No.XNYQ2021-003)。
文摘Diesel engine alternative fuels, such as methanol and biodiesel, are beneficial to reduce diesel engine emission. In order to study the influence of methanol and biodiesel on the performance, economy and emission of small agricultural diesel engine, the physical-chemical properties(cetane number, lower heat value(LHV), viscosity, etc.) of methanol and biodiesel were analyzed. The methanol and biodiesel showed good complementary property to some extent. When a large proportion of methanol was added into biodiesel, the cetane number of the methanol/biodiesel blend will be greatly reduced. Since the cetane number of the blend fuel has great influence on the combustion process of diesel engine, after testing for blending ratio of methanol/biodiesel, the blend was prepared with 5%(BM5), 10%(BM10) and 15%(BM15) methanol, respectively. Di-Tert-Butyl Peroxide(DTBP) was chosen as a cetane number improver to be added into methanol/biodiesel blend. 0.25%, 0.50% and 0.75% of DTBP was added into BM15. The bench test was carried out on a 186 FA diesel engine to study the effect of methanol and DTBP on the engine performance and emissions. The results show that, at rated condition, compared with biodiesel, the NO;concentration of BM5, BM10 and BM15 is reduced by 5.02%, 33.85% and 21.24%, and smoke is reduced by 5.56%, 22.22% and 55.56%. However, the engine power is also reduced by 5.77%, 14.23% and 25.41%, and the brake specific energy consumption is increased by 3.31%, 7.78% and 6.37%. The addition of DTBP in methanol/biodiesel could recover the engine power to the level of diesel. DTBP shows good effect on the reduction of the brake specific energy consumption and NO_(x), CO, HC concentration, but a little increase of exhaust smoke.
基金the National Natural Science Foundation of China(Grant No.52075210)the China Postdoctoral Science Foundation(Grant No.2020M682438).
文摘Existing rape combine harvester with a cyclone separation cleaning device has the challenge that the loss rate and the cleaning rate increase and decrease simultaneously.A cleaning process route was proposed,which involves the cyclone separation cleaning device removing light and tiny impurities,and the cylinder sieve device removing coarse and long impurities such as pod shells and short stems.A novel cleaning system combining the cyclone separation cleaning device and cylinder sieve cleaning devices was designed.The ranges of the structure and operation parameters for each component were analyzed based on kinematics and dynamic analysis.A four-factor five-level quadratic orthogonal test was carried out,in which the loss rate and cleaning rate were taken as the evaluation indexes.The velocity at the suction port,the rotation speed of the cylinder sieve,the screw pitch of the spiral blade and the diameter of the sieve hole were taken as the influencing factors.The orthogonal test results showed that the cleaning system performed best at a rotation speed of the winnower is 600 r/min,an airflow velocity at the suction port is 18.25 m/s,a rotation speed of the cylinder sieve is 87 r/min,a screw pitch of the spiral blade is 440 mm and a diameter of the sieve hole is 4.48 mm.At this time,the loss rate of the cleaning system is 3.22%,and the cleaning rate is 95.67%.Compared to the conventional cyclone separation cleaning device,the loss rate is reduced by 2.17%and the cleaning rate is increased by 1.05%.This study can provide a reference for the optimal cleaning system design for rape combine harvesters.
文摘The Clarivate Analytics Journal Citation Reports(JCR)and Web of Science(WoS)platforms are arguably the most influential journal citation/metric databases worldwide.Journals must first be indexed in the WoS Core Collection(CC)before being indexed in the JCR.The JCR and WoS platform are separate Clarivate Analytics products,but the JCR is included in the WoS platform for organizations that purchase both databases.The analysis for this study focused on citation data reported in the 2017 JCR(based on 2016 citation data)and other data reported in the WoS CC up to 2016.A total of 14 journals are indexed in the 2017 JCR agricultural engineering category;however,only 13 journals are analyzed in this because one journal was listed by mistake.Six of the 13 journals are published by large for-profit publishers(i.e.,Elsevier B.V.or Springer Verlag)and the other seven are published by respective professional societies.The journals were analyzed as a function of type(specialty versus comprehensive),type of publisher and publication frequency,metrics such as the Journal Impact Factor(JIF),volumes of articles published by year and journal,and the source institutions and countries of published articles.Bioenergy-and industrial crop-focused journals included in the 2017 JCR agricultural engineering category manifest the strongest overall metrics,as evidenced by relatively high JIF scores:Bioresource Technology(4.917),Biomass and Bioenergy(3.219)and Industrial Crops and Products(3.181).In contrast,the highest JIF reported in the 2017 JCR for a comprehensive agricultural engineering journal was 2.044 for Biosystems Engineering.During 2006 to 2016,the number of articles indexed in the Core Collection for the JCR agricultural engineering category rose from 1,124 to 4,078,an increase of 263%.Over 70% of the total articles published in 2016 were published in the three bioenergy-or industrial-crop focused journals.The top three countries that published the highest levels of WoS Core Collection agricultural engineering articles in 2016 were China(1132),United States(669)and Brazil(474).The similar top publishing institutions were the United States Department of Agriculture(USDA;136),Chinese Academy of Sciences(CAS;136)and Indian Council for Scientific and Industrial Research(CSIR;79).The results of the study also show that publishing by Chinese scientists in the 13 journals indexed in the JCR Agricultural Engineering(AE)category is rapidly increasing,with seven research institutions ranked in the global top 20 in 2016,based on studies published in journals indexed in the JCR agricultural engineering category.The analysis also reveals that the specialty journals(e.g.,the three bioenergy-focused journals)are not directly comparable with the comprehensive agricultural engineering journals and should potentially be excluded from future versions of the JCR and WoS CC AE categories.
文摘Based on the technical characteristics of agricultural engineering,this research developed a theoretical system and methodology on the integration of agricultural engineering technology by studying the classification of constituent technologies,technological evaluation and integration,and optimization of agricultural engineering patterns.Thirty-two integrated agricultural engineering patterns are proposed according to the methodology for different regions with different local industry backgrounds,operating scales and objects.This research provides a solid foundation for the study of the agricultural engineering technical scheme,patterns and construction standards,which can help to provide a comprehensive solution to problems relevant to modern agriculture.
基金the National Natural Science Foundation of China(Programs No.30271078)Jiangsu International Science and Technological Cooperation Project(Project No.BZ2007013)。
文摘The deterioration of global environment,decreasing of biological diversity,increasing of natural disasters,exhausting of biological resources and acceleration of desertification emphasize the need to provide the human-beings with the suitable environments.Nowadays,precision agriculture and precision forestry have been emphasized to obtain the maximum output with minimum input and the least impact on the environment,so agricultural and forestry engineering systems require multi-disciplinary design groups to deal with some common interests and the concept of biomechinfotronics is needed.The word“biomechinfotronic”is introduced to describe the multidisciplinary aspects of this complex system.In the paper,the prospects,mission analysis,education system,research areas of biomechinfotronics are studied.The particular characteristics of biomechinfotronics are the synergistic integration of biological engineering with mechatronics,bioinformatics,infotronics,bioelectronics and intelligent computer systems for conducting common research and development and for recruiting and training students with wide specialties.
基金This work was financially supported by the China Science and Technology Association Innovation-Driven Engineering Demonstration Project(Grant No.ZLGC201901-12).
文摘Agriculture and biological engineering are the foundation of agricultural modernization,and related countries have also issued relevant policies to guide the development of agriculture and biotechnology.Agricultural and biological engineering experts are the intellectual resources in the field.At present,there is less research on the management and maintenance of agricultural and biological engineering experts,and there is a lack of software systems in this area.In order to realize the management and maintenance of agricultural and biological engineering expert information,a service platform for the international agricultural and biological engineering expert system based on the B/S framework has been developed.The background of the system used C#as the development language,and the foreground used JavaScript technology and Bootstrap.The software adopted ASP.NET MVC as the web development framework and used the Entity Framework to operate the SQL Server background database.The system has the function of searching and querying agricultural and biological engineering expert information according to keywords,and implements the functions of adding,deleting,and modifying data records,and the function of generating spreadsheets and importing spreadsheet data.The development of this system provides effective management tools for the maintenance and construction of agricultural and biological engineering expert databases and lays a good foundation for the construction of agricultural and biological engineering think tanks.
文摘General Introduction Frontiers of Agricultural Science and Engineering(FASE)is an authoritative source for professionals with interests encompassing agricultural science and engineering,supervised by the Chinese Academy of Engineering,administered by Higher Education Press of
文摘Frontiers of Agricultural Science and Engineering(FASE)is an international journal for research on agricultural science and engineering.The journal’s aim is to report advanced and innovative scientific proceedings in agricultural field including Crop Science,Agricultural Biotechnology,Horticulture,Plant Protection,Agricultural Engineering,Forestry Engineering,Agricultural Resources,Animal Husbandry and Veterinary Medicine,
文摘Colleagues,It is our great pleasure to introduce you to the Frontiers of Agricultural Science and Engineering(FASE),a new international journal launched in 2014.FASE was founded jointly by the Chinese Academy of Engineering,China Agricultural University and
文摘Frontiers of Agricultural Science and Engineering(FASE)is an international journal for research on agricultural science and engineering.The journal’s aim is to report advanced and innovative scientific proceedings in agricultural field including Crop Science,Agricultural Biotechnology,Horticulture,Plant Protection,Agricultural Engineering,Forestry Engineering,Agricultural Resources,Animal Husbandry and Veterinary Medicine,
文摘Frontiers of Agricultural Science and Engineering(FASE)is an international journal for research on agricultural science and engineering.The journal’s aim is to report advanced and innovative scientific proceedings in agricultural field including Crop Science,
文摘Frontiers of Agricultural Science and Engineering(FASE)is an international journal for research on agricultural science and engineering.The journal’s aim is to report advanced and innovative scientific proceedings in agricultural field including Crop Science,Agricultural Biotechnology,Horticulture,Plant Protection,Agricultural Engineering,
文摘Frontiers of Agricultural Science and Engineering(FASE)is an international journal for research on agricultural science and engineering.The journal’s aim is to report advanced and innovative scientific proceedings in agricultural field including Crop Science,Agricultural Biotechnology,Horticulture,Plant Protection,Agricultural Engineering,
文摘General Introduction Frontiers of Agricultural Science and Engineering(FASE)is an authoritative source for professionals with interests encompassing agricultural science and engineering,supervised by the Chinese Academy of Engineering,administered by Higher Education Press of China and China Agricultural University,and published by Higher Education Press of China on
