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农用核技术研究应用中心始建于上世纪七十年代初，中心下设辐照技术研究室、射线应用研究室两个研究室。
新疆是中国棉花主产区，机械化收获程度相对较高。采棉机是高端农机装备，摘锭是其核心零部件在采摘过程中与棉纤维、硬质棉秆接触摩擦导致表面涂层磨损，降低田间采净率及摘锭使用寿命，故其性能好坏直接影响采棉机的运行效率和机采棉品质。该文建立了采棉机摘锭的实体模型，通过有限元方法分析摘锭在脱棉过程中应力与应变的分布规律，旨在揭示摘锭失效的力学机制。数值结果表明表面涂层磨损是作用在钩齿表面上的摩擦力合力在采摘过...
中国农业工程建设标准体系概述
农业工程 标准 标准体系
2017/11/20
研究旨在建立农业工程建设标准体系,该体系是农业工程建设和标准制修订以及农业工程建设标准化的纲领性文件,是农业工程建设标准体系框架的深入研究。 [方法]运用文献资料查询、专家咨询和研讨等方法,对标准体系框架结构中专业维的划分与组成以及标准体系中标准明细表进行了深入的研究。[结果]研究确定农业工程建设标准体系框架结构包括专业维、序列维、层次维三维。明细表中包括现行标准173项,在编标准8项,待编标准3...
简述了离散元法在农业工程领域方面的研究成果,根据离散元法在农业工程领域的不同应用,分别讨论了离散元法在土壤散体颗粒,农业物料颗粒,多相流中单相介质的应用研究现状,指出了存在数量级受限,颗粒模型不精准,复杂工况制约等问题。提出今后离散元法的研究趋势：开发农业工程领域的专用离散元软件,提高颗粒群的运算效率；通过准确获取物料的细观参数,从理论基础上完善接触模型,使仿真颗粒与真实颗粒更为接近；通过离散元法...
Yield and fuel characteristics of willows tested for biomass production on agricultural soil
short rotation coppice emissions native willow
2016/12/9
Short rotation coppice (SRC) plantations of fast growing trees in Czech Republic may be grown on approximately 120,000 ha in future, as indicated in the Czech Action Plan for Biomass. Until now, 2,800...
Mechanical properties of composite material reinforced with textile waste from the process of tyres recycling
epoxy resin quality testing microfiber testing
2016/9/2
The paper deals with the polymeric fibre composite with the reinforcement on the basis of the waste from the process of the tyres recycling. The aim of the research was the use of the material of clea...
Moisture and thermal diffusivity of lentil seed under convective infrared-microwave:Modelling with and without shrinkage
infrared radiation equilibrium content Fick’s second equation drying rate dehydration
2016/9/2
The effect of infrared radiation and microwave radiation on the moisture and thermal diffusivity characteristics of lentil seeds during infrared and microwave drying was investigated. Using mathematic...
Influence of temperature on vacuum drying characteristics, functional properties and micro structure of Aloe vera (Aloe barbadensis Miller) gel
therapeutic moisture ratio activation energy
2015/12/30
Aloe vera possesses therapeutic, antioxidant and some other functional properties. These properties may be affected by processing operations. The present study investigated the influence of operating ...
Thermal and physical properties modelling of terebinth fruit (Pistacia atlantica L.) under solar drying
thin layer moisture diffusivity shrinkage colour rupture energy
2015/12/30
A laboratory solar dryer was used to study terebinth fruit drying. Two solar collectors were adjusted in east-west directions with the angle of 45°. Initial moisture content of terebinth fruit was dri...
Pyrolysis of sandbox (Hura crepitans) shell:Effect of pyrolysis parameters on biochar yield
residue thermal reactor model factorial
2015/12/30
Pyrolysis of sandbox shell was carried out with the aim of investigating the effect of pyrolysis parameters on the pyrolysis process and identifies production conditions for the yield of biochar. Para...
Coniform-shape tool for splitting of wooden logs
fracture mechanics wedge splitting test fracture energy
2015/5/18
The article deals with design of a coniform tool with rotary motion for splitting of logs. The tool is proposed using a fracture mechanics theory. The approach of energy balance during crack growth in...
墨西哥的农业发展政策和农民动员：１９４０－１９８２年
墨西哥 农业发展政策 全国农民联盟 独立农民组织
2014/7/31
２０世纪４０年代后，与进口替代工业化发展战略相适应，墨西哥政府重点支持商品性的农业，减缓了土
地改革步伐；同时通过“全国农民联盟”对农民实行控制。７０年代中期前，这种政策取得了一定成功，创造了政治
稳定和经济增长的“奇迹”，此期出现的独立农民组织大多被政府同化。７０年代后，工农业发展陷入停滞，社会政
治矛盾加剧，“全国农民联盟”的控制力减弱，农民动员和独立农民组织有了新的发展，并呈现出新的特...
植物工厂作为技术高度密集、资源高效利用的省力型生产方式，近年来在一些国家（如中国、日本、韩国、荷兰等）得到快速发展。分析了植物工厂快速发展的背景，阐述了发展植物工厂的重要意义，介绍了植物工厂的发展现状及人工光源、节能环控、蔬菜品质调控、基于网络的智能化管控等关键技术的研究进展。针对植物工厂面临的问题，提出了进一步发展的相应对策。