Results 111 to 120 of about 26,437 (250)

Scientists in power plays: How substantive were scientists' narratives during the COVID‐19 pandemic?

open access: yesPolicy Studies Journal, EarlyView.
Abstract Scientists who provide expert advice must engage with policy processes. Little is known about whether and how scientists deal with the political dynamics of policy processes that are inherent to policymaking. We study this question by building on the policy dimension concept within the Narrative Policy Framework.
Jule Ksinsik, Caroline Schlaufer
wiley   +1 more source

中国 6 个群体线粒体 DNA Region Ⅴ 的缺失多态性

open access: yesZhongshan Daxue xuebao. Yixue kexue ban, 2004
【目的】研究中国广东地区汉族、华东地区汉族、内蒙古汉族、云南白族、内蒙古蒙古族、新疆维吾尔族等6个群体在线粒体DNARegionⅤ的多态性。【方法】PCR扩增后采用变性高效液相色谱技术分离片段,检测线粒体DNARegionⅤ9bp缺失的频率。【结果】在中国6个群体中发现标准型、缺失型和3型3种多态类型,9bp缺失频率在6个群体分别为21.4,18.0,14.0,16.9,7.0,10.4。【结论】中国6个群体在线粒体DNARegionⅤ均存在9bp缺失的多态性,6个群体间的缺失频率存在差异。
孙宏钰
doaj  

Assisted Selecting Parents of Hybrid Combination Based on SSR Polymorphism [PDF]

open access: yes, 2004
Corresponding author, zjhym@ public.xm.f j.cn[中文文摘]本研究利用 6 0对SSR引物对籼稻品种佳辐占与 6个候选亲本品种进行相互之间的多态性分析。结果表明 :佳辐占与明恢 6 3之间的多态性程度最高 ,达到 2 2 7% ;其次是与明恢 86之间的多态性程度 ,达 19 6 % ,而与其他品种的多态性程度较低。多态性程度高的品种间的杂交组合 ,其杂种优势明显高于多态性程度低的品种间的组合。初步表明 ,根据SSR多态性程度的高低选配亲本 ...
王侯聪, 马磊, 黄育民
core  

血管内光声-超声-光学相干层析-光声弹性多模态成像方法及系统

open access: bronze, 2023
万余洋 Wan Yuyang   +3 more
openalex   +2 more sources

Powerful representation of the poor? German welfare associations' narrative advocacy during COVID‐19

open access: yesPolicy Studies Journal, EarlyView.
Abstract The COVID‐19 pandemic sparked unprecedented experimentation in the German social assistance system, leading to changes previously considered impracticable by policymakers. This included a sanctions moratorium, easier access to benefits, and temporary cash transfers, all of which were advocated by welfare associations—key organized interests ...
Christopher Smith Ochoa
wiley   +1 more source

安邦河湿地自然保护区春季鸟类群落多样性研究

open access: yes野生动物学报, 2011
2009年5月9日~6月9日,采用样方法对安邦河湿地自然保护区退耕还湿区域鸟类群落多样性进行了研究。根据调查区域生境特点,将调查区划分为3个大样方,分别为恢复初期湿地(样方1)、恢复中后期湿地(样方2)以及农田(旱田,样方3)。本研究共观察到鸟类12目24科61种。该地区春季鸟类群落多样性指数为2.20,其中样方2的多样性指数最高,为1.73;样方1为0.63;样方3为0.18。多样性指数比较结果表明,进行生态恢复可以增加鸟类的群落多样性。鸟类群落多样性是衡量一个地区生态环境的一个重要指标 ...
刘志伟   +5 more
doaj  

[The correlation between FCER2 gene polymorphism and the efficacy of inhaled corticosteroids in patients with chronic rhinosinusitis]. [PDF]

open access: yesLin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi, 2023
Liu S   +6 more
europepmc   +1 more source

Assessing the Effect of Deservingness Cues on Tolerance for Administrative Burdens

open access: yesPolicy Studies Journal, EarlyView.
ABSTRACT Beneficiaries of public programs must overcome several administrative challenges. Given what we know about the politics of the welfare state, it seems likely that the public's willingness to support reductions in burdens may be associated with the characteristics of potential policy targets including their life circumstances and their race ...
Simon F. Haeder
wiley   +1 more source

血液透析者低密度脂蛋白受体基因多态性及其对血脂的影响

open access: yesZhongshan Daxue xuebao. Yixue kexue ban, 2004
【目的】探讨血液透析患者低密度脂蛋白受体(LDLR)基因多态性及其对脂代谢的影响。【方法】生化方法检测112例血液透析血清脂质水平,多聚酶链反应-限制性片段长度法检测105例血液透析患者LDLR内含子4TaqⅠ位点与80例血液透析患者外显子13AvaⅡ位点基因多态性。【结果】血液透析患者脂代谢紊乱主要表现为血清甘油三酯、载脂蛋白B水平显著增高。血液透析组与对照组LDLR内含子4TaqⅠ位点与外显子13AvaII位点基因型及等位基因分布频率无显著差异(P>0.05 ...
王玉新
doaj  

Home - About - Disclaimer - Privacy