加降凝剂输油技术的现状及发展方向

输油管道添加降凝剂是改善原油代温流变性的一种物理化学方法，从降凝剂的筛选和复配，处理条件，应用方式，配套设施、应用效果等方面系统地介绍了含蜡原油添加降凝剂输送工艺的研究及应用现状，指出了降凝剂在研究和应用中存在的问题，对添加降凝剂的输油技术进行了客观评价，展望了降凝输油技术的发展方向。     

藏鸡的现状及利用

藏鸡是一种体型较小、胸腿发达、快羽 ,适宜于高寒、低压、缺氧高海拔地区的地方优良品种 ,素以觅食能力强 ,极耐粗放 ,体小肉多、肉质细嫩鲜美而著称 ,是高海拔地区养禽业中的当家品种。针对藏鸡生产、繁育的现状和不足 ,分析其制约因素 ,研究搞好藏鸡繁育与饲养的综合配套技术以及藏鸡可持续开发利用的战略对策 ,无疑具有现实的指导意义和长远的理论意义     

基于landsat卫星影像的水库水体总磷质量浓度反演研究

以清河水库为研究区域,利用Landsat8卫星OLI数据及实地观测数据,建立了适于清河水库水体总磷质量浓度的最小二乘支持向量机(LS-SVM)遥感反演模型,并对清河水库总磷量进行了反演分析。结果表明,LS-SVM模型的平均相对误差为6.06%,相比于单波段线性回归反演模型及波段组合线性回归模型,平均误差分别降低了20.77%、12.53%,显著提高了清河水库水体总磷质量浓度反演的模型精度,达到遥感反演预测精度要求;利用LSSVM反演模型对清河水库总磷量反演显示,水体中总磷质量浓度主要集中在0.04~0.08 mg/L,水库水体总磷质量浓度总体偏高。     

引黄灌区不同肥料类型和施肥技术对稻田氮磷流失的影响

为减少引黄灌区稻田退水导致的农业面源污染,寻找水稻稳产和环境友好的最佳结合点,研究了大田示范条件下不同肥料类型和施肥技术对稻田田面水和排水沟退水氮磷变化特征的影响。结果表明,与常规施肥处理比较,优化施肥和侧条施肥均可以显著降低稻田田面水和排水沟中TN质量浓度,其中以侧条施肥处理效果最好,田面水和排水沟中TN质量浓度仅为常规施肥的47.4%和34.3%,各施肥处理间田面水和排水沟中TP质量浓度变化差异不显著。优化施肥和侧条施肥处理在肥料减量的条件下水稻产量并没有降低,其中有机种植处理产量最低,相对产量仅为常规处理的73.5%。综合考虑水稻产量和环境因素,优化施肥和侧条施肥技术可以作为环境友好型施肥技术在引黄灌区进行推广。     

Analysis of micro-climate on the programs of urban infrastructure regeneration in J city,Republic of Korea

The purpose of this study is to simulate urban micro-climate change due to the variation of wind flow and temperature assuming situations before and after applying programs using urban infrastructure regeneration technologies (UIRTs), and to then quantitatively estimate effectiveness on the urban regeneration schems. UIRTs focus on improving the recycling efficiencies of reclaimed water and biogas produced and to enforce the linkage among all environmental infrastructures associated with water, waste, and energy in an urban block. To implement the micro-climate analyses, data such as land use, topography, building height and materials, and weather conditions were collected, and the results estimated based on fluid simulations of cold wind and temperature variation pathways. There were three programs used in the urban regeneration project in J city: river restoration, traditional market revitalization, and a primary school eco-school. The height of cold wind from the ground level was significantly elevated, and the maximum wind velocity differential between before and after increased by 0.12 m/s due to the expansion of the waterfront space and grassland through the three programs. Overall, a temperature at the ground level dropped by 1.6 °C. Based on these results, the three programs improved the urban environment at ground level, and might ultimately be capable of diminishing the urban heat island effect and mitigating the energy consumption of urban areas.     

黑龙江省农机合作社存在问题及发展对策

农机合作社是实现农业机械化、农业现代化的有效形式,是解决"三农问题"、粮食增产增收的最优途径。通过对基层农机合作社的实地调研以及对2014年黑龙江省现代农机专业合作社相关统计数据整理分析,在总结目前黑龙江省现代农机专业合作社面临具体问题的基础上,提出了黑龙江省现代农机专业合作社发展对策。研究结论可为黑龙江省农机合作组织的建设和发展提供具体指导,同时对全国农业合作组织健康发展具有参考意义。     

Emerging Communication Technologies

ABSTRACT

In this age of personal computing and global telecommunication, we might define communication as the ability to acquire, process and convey information. Computer and telecommunication technologies, which are advancing at exponential rates, are greatly enhancing our ability to communicate. Within the next ten years, virtually every desk-top office worker will have a super personal computer on their desk, and broadband communication will be less demanding than a long distance call. These trends will reduce the ability to acquire, process, and exchange large volumes of information to a commodity routinely taken for granted. Universal access to this commodity will propel us into a new age of communication. All of humanity will benefit. Those who embrace this new age will lead and flourish; the rest will follow.     

科技信息在我国食用油产业发展中的作用

讨论了我国食用油产业的发展现状,分析了国际4大粮商渗入我国食用油产业的轨迹,阐述了科技信息在我国食用油产业发展中的作用.     

新疆吐鲁番地区孜然套种棉花主要栽培技术要点

针对新疆吐鲁番地区孜然套种棉花的栽培技术进行探讨。     

黄金宝树组培育苗技术研究

以黄金宝树基部半木质化萌芽条为外植体,MS为基本培养基,探讨6-BA、KT、NAA对黄金宝树组培育苗的影响,试验结果表明,黄金宝树组培育苗最佳培养基配方分别为:初代培养基MS+6-BA 0.3 mg.L-1+KT 0.5 mg.L-1+NAA 0.3mg.L-1+蔗糖30 g.L-1+卡拉胶8 g.L-1、增殖培养基MS+6-BA 0.5 mg.L-1+KT 0.3 mg.L-1+NAA 0.3mg.L-1+蔗糖30 g.L-1+卡拉胶8 g.L-1、生根培养基1/2 MS+NAA 0.5 mg.L-1+蔗糖20 g.L-1+卡拉胶8 g.L-1。初代培养诱导率达80%以上,有效芽条增殖率达3倍以上,生根率达95%以上,移栽成活率达90%以上。