Results 41 to 50 of about 46,764 (200)

A Tale of Two Programs? Stigma and Administrative Burdens in CHIP and Medicaid

open access: yesWorld Medical &Health Policy, Volume 18, Issue 1, March 2026.
ABSTRACT One contributing factor to undersubscriptions is administrative burdens. To explore whether program stigma affects attitudes about administrative burdens, a survey (N = 2204) was fielded to assess differences in attitudes about seven policies decreasing administrative burdens and two policies increasing administrative burdens.
Simon F. Haeder
wiley   +1 more source

基于粪便DNA技术的鸟类物种鉴定体系研究

open access: yes野生动物学报, 2020
利用粪便DNA技术对候鸟进行物种鉴定,对了解鸟类在繁殖地和越冬地的种类分布、研究其迁徙路线等具有重要意义。本研究扩增、测定了76份雁形目鸟类粪便的D-loop区序列,将其与NCBI数据库中已知鸟类同源序列进行比对分析(BLAST比对法)。结果表明:相似度为98.07% —100%,其中75%的单倍型可以被认定为单一物种,25%的单倍型检测为非单一物种,即包含2个近缘物种。比较基于Ts、Ts +Tv碱基替换计算的K2P遗传距离,说明后者更适合于D-loop区序列特征。而且,以此为基础的遗传距离法 ...
秦啼 1   +5 more
doaj  

Subsidies, Net Zero Transition and Public Debt: An Analysis for the Oil and Gas Industry in Brazil

open access: yesLatin American Policy, Volume 17, Issue 1, March 2026.
Abstract Despite awareness of the challenges in promoting the decarbonization of the economy, explicit fossil fuel subsidies have increased considerably worldwide in the past decade, reaching an all‐time high at US$1 trillion in 2022. Considering the net‐zero transition and the increase of modern public debt, this article assesses the most relevant ...
Fernando Inti Leal   +2 more
wiley   +1 more source

水产动物重要经济性状的分子基础及其遗传改良 [PDF]

open access: yes, 2012
中国水产养殖的成就已被认为是中国对当今世界发展的一个重大贡献.近20年来,基因组学和其他遗传技术的进步显著推动着水产动物分子生物学和遗传育种学基础研究的发展.进入21世纪后,一些主要水产动物的全基因组测序已经完成或接近完成.本文综述了包括基因组技术、体细胞核移植和干细胞技术在内的水产遗传改良技术的一些重要突破性进展,概述了包括生殖、性别、生长、抗病、耐寒和耐低氧这些重要经济性状的分子基础,列出了一系列与这些经济性状相关的候选基因.最后,介绍了几个特别是中国水产动物遗传改良在水产养殖中的应用事例 ...
朱作言, 桂建芳
core  

麝鼠仔鼠的性别鉴定

open access: yes野生动物学报, 1988
有关成龄和幼龄麝鼠性别鉴定的报道屡见不鲜(华树芳,1985,刘桂仁,1984;曲增文,1987,李晓坤,1987),其方法大同小异,我们亦采用其中的“看”和“触摸”法对成龄和幼龄麝鼠进行性别鉴定。但就仔鼠的性别鉴定至今尚未见报道。如能对仔鼠进行性别鉴定,对科研及生产会有重要意义。笔者通过1986 ...
李雁冰
doaj  

HPLC-DAD-ESI-MSn技术对橘叶(福橘叶)中96个化学成分的快速分离和鉴定

open access: yes, 2016
为了对橘叶(福橘叶)中的化学成分进行较为系统地研究,我们首次采用液质联用技术((HPLC—DAD—ESI—MS^n)系统地分离和鉴定了橘叶中的化学成分。最终,我们在橘叶中解析了96个化学成分,包括:31个酚酸类化合物,4个黄酮苷元,6个黄酮单氧苷,10个黄酮双氧苷,54-黄酮单碳苷和5个黄酮双碳苷化合物,以及6个黄酮碳氧苷,5个3.羟基-3-甲基戊二酰基取代的黄酮苷,1个黄烷.3-醇和2个生物碱类化合物,并且初步鉴定出了21个多甲基黄酮类化合物(PMFs)。在上述解析的96个化合物中 ...
曹规划   +4 more
semanticscholar   +1 more source

The Limits of Depoliticized Water–Energy Diplomacy: Insights From the UAE–Israel–Jordan Water‐for‐Energy Deal

open access: yesWorld Water Policy, Volume 12, Issue 1, February 2026.
ABSTRACT This paper examines the rise and collapse of the 2021 United Arab Emirates (UAE)–Israel–Jordan Water‐for‐Energy Deal, a landmark initiative that sought to exchange Jordanian solar energy for Israeli desalinated water. Presented as a breakthrough in regional cooperation and environmental peacebuilding, the agreement was brokered under the ...
Majed Abu‐Zreig, Hussam Hussein
wiley   +1 more source

Design and Implementation of the Digital Archives Application Platform [PDF]

open access: yes, 2016
随着计算机技术和网络技术的快速发展,信息化在档案管理中的应用范围也越来越广泛,档案信息化的建设为档案管理提供了先进的技术和管理手段,实现了信息资源的管理和共享。档案信息化已经逐渐成为档案部门日常工作的重要组成部分,在政府的日常工作中发挥着越来越重要的作用。 本文讨论的正是将信息化技术应用于某省档案馆内档案利用服务领域,设计和实现数字档案的查阅利用,同时规范数字化档案的开放鉴定以及档案专题库维护,从各个环节上来实现电子档案查阅利用业务自动化,提高档案管理部门的工作效率和服务水平 ...
布婷婷
core  

Isolation and Identification of Secondary Metabolites from Halophytic Helianthustuberosus Tuber-Derived Fungus [PDF]

open access: yes, 2016
盐生植物菊芋(Helianthus tuberosus)是一种新型经济作物,特殊生境可能会使其内生真菌产生特殊的次生代谢产物,如结构新颖或活性显著的化合物.为研究这种耐盐植物内生真菌的次生代谢产物以及植物宿主和内生真菌之间可能存在的关系,本实验室从耐盐菊芋块茎中分离纯化出10株内生真菌,对这10株内生真菌进行抗卤虫活性筛选,初步筛选出1株抗卤虫活性良好的菌株Mucor sp.ht-7,规模发酵后通过提取分离技术得到7个化合物,用波谱手段鉴定了7个化合物的结构 ...
季乃云   +3 more
core   +1 more source

Survival, rarity, and extinction in tropical stony corals

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
Abstract Many reef‐building tropical corals are becoming rare. We considered the meaning of rarity in corals and highlighted taxa that have reached low abundances in the last few decades. The difficulties of quantifying rarity in the marine environment arise from the sheer scale and 3‐dimensional nature of the biome and the inherent challenges therein ...
Bryan Wilson, Peter J. Edmunds
wiley   +1 more source

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