Results 51 to 60 of about 954,657 (175)

Effect of decoction of Fuzheng Jiedu Xiaoji formula plus chemoembolization on primary liver cancer in patients. [PDF]

open access: yesJ Tradit Chin Med, 2022
Tong WU   +7 more
europepmc   +1 more source

AI foundation models in plant biology

open access: yesNew Phytologist, EarlyView.
Foundation models decode genomes, engineer proteins, phenotype crops, and drive AI agents across plant biology. This figure was created in BioRender (BioRender.com/xcmmkel). Summary Rapid technological progress has enabled plant biologists to accumulate unprecedented volumes of multi‐scale, multi‐modal data, yet this abundance of data has intensified ...
Haopeng Yu
wiley   +1 more source

氮正离子-过渡金属催化分解环己基过氧化氢研究

open access: yes, 2013
环己烷液相氧化制备环己醇与环己酮(K/A 油)是重要的石油化工过程。其中,环己基过氧化氢(CHHP)是环己烷氧化的重要中间体,CHHP分解是环己烷氧化的关键步骤之一。目前工业分解CHHP的方法为碱分解法,该方法K/A油的总选择性较低,而且反应过程中消耗大量NaOH,产生的废碱渣对环境污染严重。如何实现无碱高效分解CHHP,对节约资源,降低生产成本,实现清洁生产和环境保护,具有重要的科学意义和应用价值。 论文首次对氮正离子-过渡金属均相催化CHHP分解的性能进行研究 ...
郑玺
core  

Hammerstein方程的正解

open access: yes四川大学学报. 自然科学版, 1985
本文应用Leray—Schauder度理论讨论了Hammerstein方程连续正解的存在性和个数.本文结果是[1]中某些结果的改进和推广.
严家鹤, 张庆雍
doaj  

There Is Always a Bigger Fish. Determinants of Power Perceptions in Swiss Biodiversity Policy

open access: yesPolicy Studies Journal, EarlyView.
ABSTRACT The Advocacy Coalition Framework (ACF) views power as crucial in policy processes, but the nature of coalition power, its determinants, and how to empirically measure it remain understudied. In this article, we use a mixed method approach and social network analysis to explore power relationships in the biodiversity policy subsystem in ...
Alix d'Agostino   +2 more
wiley   +1 more source

换位棋问题规则的表征与解题正确率间关系的研究

open access: yes, 1997
本研究通过对被试求解换位棋过程的记录与分析,重点研究了问题表征在换位棋求解过程中的作用。实验结果表明:(1)正确表征问题规则是解题的必要前提.对问题规则信息的误解和遗漏,是影响解题正确率的重要因素。其中对非隐含问题规则的错误表征也占全部错误表征的很大比率。(2)“关键结构”的发现是解决换位棋的必要条件,对问题规则的错误表征影响“关键结构”的发现.(3 ...
王东晖, 傅小兰
core  

哮喘患儿外周血CD25 与IFN-γ的水平变化及其相关性研究

open access: yesZhongshan Daxue xuebao. Yixue kexue ban, 2002
目的】探讨哮喘患儿外周血分化群(CD)25 与IFN-γ的水平变化及其两者在急性发作期的相互关系。【方法】 应用流式细胞仪(FCM)检测发作期、缓解期和正常小儿外周血的CD25+细胞数, 应用生物素-亲合素双抗体夹心酶联免疫吸 附分析术(ABC-ELISA)测定IFN-γ水平。【结果】哮喘缓解期CD25+细胞数(4.13 ±2.20)%和正常对照组(4.11 ±1.82)% 比较无显著性差异, P >0.05, 哮喘发作期CD25 +细胞数(8.61 ±3.30)%显著高于正常对照组和缓解组, P
黄花荣, 麦贤弟
doaj  

Resource Substitution: Local Governments' Issue Attention and Policy Reinvention

open access: yesPolicy 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

Regional News, Regional Bias? Evidence From Media Discourses and Welfare Decisions in Germany

open access: yesPolicy Studies Journal, EarlyView.
ABSTRACT How do media representations of immigrants shape their treatment by street‐level bureaucrats? Despite a uniform federal legal framework, decision‐making varies substantially across local welfare offices. Though prior research links national news reporting and policy implementation, little is known about how regional variation in news reporting
Stefanie Rueß
wiley   +1 more source

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