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Search Results: 1 - 10 of 312746 matches for " 张光国 "
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对广元市油橄榄产业化建设的探讨
Discussion on the Construction of Guangyuan Olea Europaea Linn Industry
 [PDF]

, 孙友春
World Journal of Forestry (WJF) , 2014, DOI: 10.12677/WJF.2014.32002
Abstract:

广元市依托退耕还林工程建设6666.6 hm2油橄榄基地,以形成油橄榄产业化,这对减少嘉陵江上游水土流失,改善生态环境,促进地方经济发展和农民增收具有重要意义。但是广元市油橄榄产业化建设还处于初始阶段,没有现存的经验,还存在一些群众对发展油橄榄认识不清积极性不高,产业化经营模式单一,基地建设科学技术运用差,栽植后管理粗放不到位等问题。笔者通过深入研究提出了采用社区参与性方法提高农民认识,产业化经营采用联户、个体承包、股份合作等多种模式,基地建设必须充分依靠科学技术,调动各方面积极性将油橄榄产业培育成广元的龙头企业作一些粗浅看法。
Based on the returning land for farming to forestry project, Guangyuan government generates a 6666.6 hm2 Olea europaea Linn base, to form the Olea europaea Linn oil industry. It has an important significance to reduce soil erosion of the upper reaches of Jialing River and improve the ecological environment, which can promote the development of local economy. However, Guangyuan Olea europaea Linn oil industry is in the initial stage, which has no existing experience. The local people know little about the Olea europaea Linn oil and show less enthusiasm. There are some disadvantages in the construction process, such as, single operation mode, inadequate application of science and technology, ineffective management after planting. The author uses in-depth study to solve the problems. Community participation method can be used to raise the farmers’ awareness. Industrialization model uses various modes, such as, household or individual contract, joint- stock cooperation, with science and technology fully applied, which can mobilize the enthusiasm and make the Olea europaea Linn industry become the leading enterprise in Guangyuan.

小麦氮素利用效率的基因型差异研究
,
植物营养与肥料学报 , 1996, DOI: 10.11674/zwyf.1996.0406
Abstract: 研究了植株生长和产量性状差异很大的58个小麦基因型的氮素营养和利用效率。结果表明,开花期和成熟期植株各器官的含氮量和氮积累量,基因型之间差异显著;开花期剑叶含氮量与子粒含氮量呈显著正相关;每生产100公斤子粒需氦量,供试基因型变动于2.15~4.09公斤;氮收获指数的变幅为59.35%~82.89%,显示出小麦基因型在氮利用效率上的遗传差异。相关分析表明,每穗粒数、单蘖干物重、收获指数与氮效率比、氮利用效率呈显著正相关。
流式细胞仪方法定量评价巨噬细胞非调理素吞噬能力
Macrophage Phagocytosis Abilities Measured with Flow Cytometry Method
 [PDF]

, , 陈茜, 汉丽梅,
Immunology Studies (IS) , 2014, DOI: 10.12677/is.2014.21001
Abstract:
巨噬细胞是重要的天然免疫细胞,在抗细菌感染等免疫应答中发挥重要调控作用。当细菌等病原微生物感染机体时,准确的定量评价巨噬细胞的非调理素吞噬能力,常常被作为评价机体非特异免疫应答能力的重要指标。本文采用流式细胞仪结合细菌计数的方法,定量的检测了定居巨噬细胞和炎症浸润的巨噬细胞对细菌的非调理素吞噬能力变化。该研究方法将有助于定量评价在免疫应答中巨噬细胞的吞噬能力变化,以更准确反映在各种生理或病理条件下巨噬细胞的免疫应答状态。
Macrophage is an important component of innate immunity, which plays a great role in anti-infection immunity. The accurate evaluation of non-opsonic phagocytosis of macrophages is often used as an important indicator of the non-specific immune responses when bacterial infection occurs. In the present study, the non-opsonic phagocytosis of macrophages in resident or inflammatory infiltrating condition was quantificationally detected by using flow cytometry method combined with bacterial counts. This method will contribute to the quantitative evaluation for the ability of macrophage phagocytosis and the accurate response to macrophage immunity in a variety of physiological and pathological conditions.
蛋白去乙酰基酶SIRT1的免疫调节效应及机制
Immunomodulation and Mechanism of Protein Deacetylase SIRT1
 [PDF]

, , 汉丽梅,
Immunology Studies (IS) , 2013, DOI: 10.12677/IS.2013.12002
Abstract:

机体免疫分为天然免疫和适应性免疫,分别由不同的免疫细胞介导。SIRT1 (silent mating type information regulation 2 homolog 1)是一种具有烟酰胺腺嘌呤二核苷酸(Nicotinamide Adenine Dinucleotide, NAD)依赖性的蛋白去乙酰基酶活性的转录调节因子,在细胞寿命和机体代谢中发挥重要作用。近年来,SIRT1在免疫中的调控作用逐渐为研究者所重视。本文仅就SIRT1在天然免疫和适应性免疫中的调控效应及分子机制做一简要综述。
Different kinds of lymphocytes could be involved in the innate immunity and adaptive immunity. Silent mating type information regulation 2 homolog 1 (SIRT1) is a Nicotinamide Adenine Dinucleotide (NAD)-dependent protein deacetylase, which plays a critical role in life span and metabolism. Recently, the immune functional studies of SIRT1 have become a hot spot in immunological field. This review only summarizes the modulation of SIRT1 on both innate immunity and adaptive immunity and its molecular mechanism.

决策场理论简介
,进辅
心理科学进展 , 1995,
Abstract: 本文扼要介绍不确定性决策的理论:决策场理论.它对不确定性决策的动机过程,认知过程进行了仿真解释和数学模拟,能够准确预测选择概率以及选择状态与时间的系统变化关系.而这是以往的理论所不能解答的.
基于混合粒子滤波的载波估计算法
张华,,
北京航空航天大学学报 , 2013,
Abstract: 针对粒子滤波载波估计算法的高复杂度、粒子退化及贫化问题,提出了一种基于混合粒子滤波的载波估计方法.该方法引入多阶马尔科夫模型,采用多个非零均值高斯分布的加权和来近似重要性函数的最佳选择,并根据最大后验概率准则规范粒子的迭代计算.仿真结果表明,在非高斯噪声环境下,低轨卫星通信TDMA/DEQPSK(TimeDivisionMultipleAddress/DifferentialQuadraturePhaseShiftKeying)数据帧非合作接收载波估计时,与基于经典粒子滤波的载波估计算法相比,提高了粒子"效率",在误码性能相当的情况下,有效降低了计算复杂度.
海底履带采矿车行走液压系统仿真模型的建立?
寿,
湖南农业大学学报(自然科学版) , 2011,
Abstract: 为优化海底履带采矿车的行走性能,建立了基于AMESim平台的海底履带采矿车行走液压系统仿真模型,组成液压马达角速度闭环控制系统,对履带速度和马达压力的响应特性进行仿真分析。仿真结果和试验验证表明,所建立的行走液压系统液压马达具有良好的动态响应特性,能满足海底履带采矿车的要求。
湖北十堰地区25例阴道毛滴虫分离株对灭滴灵敏感性分析
杨树,,杨宏伟
中国热带医学 , 2012,
Abstract:
决策场理论简介
,进辅
心理科学进展 , 1995,
Abstract: ?本文扼要介绍不确定性决策的理论:决策场理论.它对不确定性决策的动机过程,认知过程进行了仿真解释和数学模拟,能够准确预测选择概率以及选择状态与时间的系统变化关系.而这是以往的理论所不能解答的.
基于模糊逻辑的一类非线性系统直接自适应控制
朴营,俊星,
控制理论与应用 , 2001,
Abstract: 针对一类连续非线性不确定系统,基于模糊逻辑提出了一种新的自适应跟踪控制方法.在此方法中,控制器由两部分组成:模糊逼近控制器(FAC)和模糊滑模补偿控制器(FSMCC).其中,FAC利用模糊逻辑系统全局逼近理想控制器,FSMCC用于全局补偿逼近误差和系统的不确定性及消除外部干扰的影响.整个闭环控制系统在Lyapunov意义下全局渐进稳定且系统的跟踪误差收敛于零的某一邻域内.最后通过示例验证了本方法的有效性.
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