Results 21 to 30 of about 19,407 (163)
Shuitu Baochi Xuebao, 2021 土壤水力参数是土壤水分和污染物迁移等陆面过程数值模拟的重要基础参数。为探明关中平原农田土壤水力参数空间分异特征，建立空间分布预测模型，在关中平原网格布设124个样点，采集根层0-20 cm原状和扰动土壤样品，利用van Genuchten模型拟合获取土壤水分特征曲线，获得残余含水量（θr）、饱和含水量（θs）以及系数α和n等土壤水力参数。采用经典统计学、地统计学和结构方程方法分析了θr、θs、α和n的空间变异特征及影响因子，建立了水力参数传递函数预测模型。结果表明：θr和α为强变异，θs为中等变异 ...
牛晓倩 +4 more
doaj
Preparation and Characterization of Anti-Neuropilin2 Monoclonal Antibody and Its Preliminary Application [PDF]
, 2016 研究背景和目的 Neuropilin2（NRP2）是一种多功能的新型受体，在神经系统发育、心血管系统、免疫系统及淋巴管生成等过程中发挥重要作用。最新研究表明，NRP2受体广泛表达于肿瘤细胞表面，与肿瘤血管形成以及肿瘤的发生发展、凋亡、粘附、侵袭和转移等生物学行为密切相关。多种肿瘤细胞均高表达NRP2，提示NRP2可能成为一种新型肿瘤标志物。NRP2通过多种机制调控肿瘤进展，NRP2-b1b2是其发挥作用的重要结构域，NRP2-b1b2结构域可以结合配体Ⅲ型Semaphorin和VEGF ...
杨芸
core
Rare Metals, EarlyView.ABSTRACT Single‐atom catalysis hinges on fundamental challenges in precisely controlling metal‐support interactions and rationally regulating metal–adsorbate relationships. Herein, we report a universal strategy for constructing highly efficient and well‐defined Cu(I) single‐atom catalysts based on a trifurcate AlL3 molecular support.
Donghui Zhang +9 more
wiley +1 more source
Study on the Competitiveness of City Commercial Banks in China Based on the Objective Weighting Method [PDF]
, 2015 城市商业银行是中国银行业的重要组成部分,十几年以来,在促进地方经济发展,解决中小企业融资难上发挥了不可忽视的作用.如今,国内外经济金融形势瞬息万变,监管环境也随着调整,新兴事物不断挑战传统银行经营业务和模式,在如此严峻的环境里,如何保持可持续发展、提升竞争力成为困扰城市商业银行的大问题.而客观分析和评价城市商业银行竞争力对城商行正确认识自身从而作出经营决策有重要的指导意义.截至2013年末,我国有145家城市商业银行,本文 选择数据完整的86家城商行作为数据样本,对我国城市商业银行竞争力状况进行了研究.
万琴
core
Highly Anisotropic TbCo11Ti: Phase Evolution, Microstructure and Magnetic Properties
Rare Metals, EarlyView.ABSTRACT Among the 1:12‐type compounds, TbCo11Ti stands out due to its high Curie temperature and pronounced magnetocrystalline anisotropy. However, its magnetic behavior at room temperature and its phase evolution process have not been clearly established.
Wei Chen +11 more
wiley +1 more source
Determination of altrenogest residue in pig edible tissue by a high performance liquid chromatography-tandem mass spectrometry method [PDF]
, 2023 Objective: To determinate the residues of altrenogest in porcine edible tissues （muscle, liver, fat）, a high performance liquid chromatography-tandem mass spectrometry （LC-MS/MS） method was established.
FANG Fang +4 more
core +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop +8 more
wiley +1 more source
Gaoya dianqi, 2020 配网变压器对电力系统的可靠、经济运行发挥着重要作用。过去,维护人员需要花费大量时间逐一检查配网变压器。而如今,随着电力用户电能数据采集系统的广泛部署,可提供有用的量测数据,并将其用于进一步的状态监视。因此,文中提出了一种用于配网变压器的基于数据驱动的异常状态监测数据采集算法,该算法可以及时向操作人员和维护人员发送异常状态警报。在所提的算法中,利用Spearman秩相关系数显示相电流间的相关度,其t统计量用于决定基于假设检验的确定数据采集是否存在异常情况。最后 ...
刘林青 +4 more
doaj
Preparation and Characterization of Semaphorin3Fc Monoclonal Antibody and the Preliminary Application [PDF]
, 2015 研究背景和目的 抑癌基因发生异常是癌症发生的机制之一。人类基因的很多区域发生改变时可导致细胞失控性生长。Sema3F作为肺癌19个候选抑癌基因之一，是Ⅲ型Semaphorin（即神经导向因子，最初作为Neuropilins的配体在神经系统中发挥排斥神经节轴突和调节神经系统发育的作用）家族的一个成员。目前有研究发现，与正常组织相比Sema3F蛋白在肿瘤细胞中的表达普遍存在下调的趋势，并在血管形成以及肿瘤增殖、凋亡、粘附和转移等中起着负向调节作用。此外，诸多体内或者体外实验已经证明 ...
李哲
core
Analysis of the genetic diversity of morphological traits of oat germplasms [PDF]
[Objective] The study of genetic diversity in oat germplasm resources not only contributes to the collection and evaluation of germplasm resources, but also has important guiding significance for the production and breeding of oats.
LI Guanyi +4 more
core +1 more source