Results 91 to 100 of about 45,553 (198)
StudyontheStructureandCompositionofForestof HuangshanScenicArea [PDF]
, 2016 为了全面了解黄山风景名胜区主要森林群落类型、植物物种多样性及其分布状况，本文选择了天海景区、北海景区、玉屏景区、西海景区、温泉景区、云谷景区、浮溪保护区、西大门等多个区域，通过样线法和典型样地法相结合，在4条样线、62个样地群落调查基础上，结合前人研究成果，分别从植物区系成分、植被类型分类、珍稀濒危植物、群落物种多样性特征、群落的海拔梯度变化等方面进行综合研究。主要研究结果如下： （1）黄山风景名胜区植物种类丰富，区系成分复杂。共有种子植物173科648属1483种（包括变种、亚种和变型），其中 ...
吕霖
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Policy Studies Journal, EarlyView.ABSTRACT As the Narrative Policy Framework (NPF) begins to unpack issues of power and narratives, the main focus has been on power‐over and domination rather than more transformative notions of power‐to and empowerment. This article draws on insights from gender and policy studies and suggests that the NPF benefits from adopting a multifaceted notion ...
Hilda Broqvist
wiley +1 more source
Preparation and Anti-tumor Effect of MPEG-PLA-based Nano Targeted Drug Delivery System [PDF]
, 2015 叶酸受体在病变组织的癌细胞表面过度表达，以叶酸(FA)作为靶向分子而介导的药物缓释系统已经成为当今癌症治疗手段的研究热点。本课题选择单甲氧基聚乙二醇-聚乳酸(MPEG-PLA)作为载体原料，FA为肿瘤靶向分子，采用活性酯合成法制备单甲氧基聚乙二醇-聚乳酸-叶酸(MPEG-PLA-FA)偶合物，选取羟基喜树碱(HCPT)作为模型抗肿瘤药物，通过透析法自组装形成负载HCPT的MPEG-PLA-FA纳米粒子(HCPT-MPEG-PLA-FANPs)，并采用同样的方法制备HCPT-MPEG ...
贾梦梦
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The Inclusion Trade‐Off: Comparing the Design and Functionality of Collaborative Governance Forums
Policy Studies Journal, EarlyView.ABSTRACT Environmental challenges require collaboration across jurisdictions, often through forums or intermediary spaces for repeated interaction. A persistent forum design question concerns inclusion criteria, or which actors should be included.
Adam Wiechman +3 more
wiley +1 more source
Effects of metal film on transmission characteristics of single-dielectric-slab THz waveguide [PDF]
, 2016 The effects of a symmetrical metal film on the transmission characteristics of TM mode in the thicker single-dielectric-slab THz waveguide is analyzed theoretically.
Hong Su, SU +3 more
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Resource Substitution: Local Governments' Issue Attention and Policy Reinvention
Policy Studies Journal, EarlyView.ABSTRACT Research on policy reinvention, where a government modifies rather than replicates policy innovations introduced by other governments, has progressed significantly, but how it is influenced by the government's issue attention has not been thoroughly examined.
Yingxin Zhang, Yixue Yao, Kaifeng Yang
wiley +1 more source
Gaoya dianqi, 2016 各有关单位:近年来,SF6替代气体的相关研究已经引起国内外技术人员及政府的高度关注,并进行了非常有价值的研究工作。为展示该领域最新进展,促进SF6替代气体进一步研究与应用,兹定于2017年1月910日在陕西省西安市召开"SF6替代气体专题研讨会"。现就会议有关事宜通知如下:一、会议主要内容1、SF6替代气体政策解读;2、SF6替代气体国际研究动态;
doaj
The Research for Performance Strategy Optimization of Lugang Wool Co.Ltd ——Based on the Analysis of the World’s Top Five Hundred Manufacturing Enterprises’s Performance In dicates [PDF]
, 2015 在世界经济一体化，科学技术飞速发展、市场竞争日益激烈的大趋势下，企业的经营环境发生了很大变化，这给企业管理带来了更高难度的挑战。在信息时代，竞争的焦点转移到了对无形资源的开发和利用上，这就迫使管理者发现新的指标去衡量在新的竞争环境下导致成果的非财务特殊驱动因素。在这种情况下，战略导向的绩效考核应运而生。基于战略导向的绩效考核将组织的战略目标转化为阶段性的、具体的、可操作的并为大多数人理解的目标，使组织战略贯穿在绩效考评全过程，有助于组织战略目标的战术转换和具体执行。在绩效战略实施过程中 ...
黄春洪
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Democratic Values in Citizen Participation: What Citizens Prioritize in Participation
Policy Studies Journal, EarlyView.ABSTRACT Citizen participation is often initiated to strengthen democracy. While participatory innovations are typically assessed through normative frameworks emphasizing democratic values, little is known about which of these values are prioritized by citizens.
Take Sipma, Frank Hendriks
wiley +1 more source
He jishu池式研究型反应堆是全球多用途研究堆中的重点类型，因其在安全特性、多用途性和运行维护等方面的突出表现而备受关注。在池式堆中，热功率为1~10 MW的小型研究堆方案设计最为成熟，应用场景最为广泛。为了探索未来池式研究堆堆芯设计及其应用场景的发展趋势，首先，根据全球开展RERTR（Reduced Enrichment Research and Test Reactor）低浓化项目并进行堆芯重新设计的小型池式研究堆不同的堆芯方案进行对比，研究分析未来小型池式研究堆堆芯可采用的燃料类型和组件结构 ...
陈 晓亮 +3 more
doaj +1 more source