Results 41 to 50 of about 12,631 (178)
Rare Metals, EarlyView.ABSTRACT Photocatalytic hydrogen production from water splitting is a promising strategy for sustainable and clean energy generation. However, the design of low‐cost, highly active photocatalysts remains a critical challenge. In this study, covalent organic frameworks (COFs) were loaded onto the surface of Cd0.9Cu0.1S to fabricate COF/Cd0.9Cu0.1S ...
Yue Zhao +3 more
wiley +1 more source
不同减胎方式对单绒毛膜双羊膜囊双胎临床结局的影响 [PDF]
, 2020 【目的】对比双极脐带电凝减胎术（BCC）与射频消融减胎术（RFA）对单绒毛膜双羊膜囊双胎临床结局的影响。【方法】收集 2009-2019 年间中山大学附属第一医院行妊娠早期超声检查诊断为单绒毛膜双羊膜囊双胎孕妇 53 例作为研究对象。所有孕妇孕期均行选择性减胎术，并在我院规律产检及分娩。回顾性分析统计孕妇基本情况、减胎方式的选择、分娩孕周等相关因素对最终的妊娠结局及新生儿结局产生的影响。数据采用SPSS20.0 软件进行统计学分析。【结果】RFA 组和 BCC 组术后发生下腹紧缩感的比例分别为65.0 ...
戴郁菁 +6 more
core
When and why to give shorebirds a head start
Conservation Biology, EarlyView.Abstract Headstarting is a translocation technique involving the hatching or rearing of wild eggs or young in captivity and the release of those individuals back to the wild at or before independence. It has been trialed as a conservation intervention for shorebirds over recent decades to improve the population trend of target populations by increasing
Lynda Donaldson +4 more
wiley +1 more source
Timing of ultrasonography in the diagnosis of fallopian tubal heterotopic pregnancy [PDF]
Objective·To assess the value of ultrasonography in the diagnosis of fallopian tubal heterotopic pregnancy (THP).Methods·From January 2010 to December 2022, among the 13 082 cases of ectopic pregnancy diagnosed and discharged from the International Peace
HUANG Qin, HUANG Ying, LI Wen
core +1 more source
In vitro culture, cryopreservation, and field reintroduction of the endangered Mingan thistle
Conservation Biology, EarlyView.Abstract Current plant conservation efforts are hindered by, for example, poor seed germination, low viability, and insufficient propagation and preservation technologies. To address these problems, we devised an approach to plant conservation that integrates conservation, preservation, and restoration (CPR), which uses advanced in vitro techniques. We
Mukund R. Shukla +4 more
wiley +1 more source
Shuitu Baochi Xuebao, 2000 干旱缺水是提高干热河谷旱坡地粮食产量和提高植树造林成活率的主要制约因素。为了充分利用有限的降水，进行了旱坡地“地下地膜隔水墙”节水农业（节水造林）技术及果树节水灌溉栽培试验。结果表明，旱坡地粮食增产6.5%-20.2%，造林成活率提高20%-30％，果树栽培节水率60％－80％，且生长良好。
张建平 严俊华 等
doaj +2 more sources
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Low conductivity and poor oxygen reduction reaction (ORR) catalytic activity limit the bifunctional catalytic performance of layered double hydroxide (LDH) in zinc–air batteries. In this work, an efficient bifunctional electrocatalyst was prepared by loading nitrogen and phosphorus co‐doped carbon quantum dots (NPCQDs) onto a cationic‐vacancy ...
Wenhao Tang +4 more
wiley +1 more source
野生动物学报, 1981 在人工养麝和活麝取香获得经验的基础上,进一步研究麝的繁殖和提高仔麝的成活率,是扩大麝群,增加麝的数量和麝香产量的重要途径。目前,全国大多数省（区）都在开展养麝生产活动,现将我们在养麝生产中麝的繁殖和提高仔麝成活率所采取的措施以原麝（Maschus moschiferus）为例做简要介绍,供参考。
毕书增, 颜于宏, 许树安
doaj
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Developing efficient and sustainable energy conversion technologies is crucial for addressing the global energy and environmental challenges. As a promising clean energy conversion strategy, the electrocatalytic methanol oxidation coupled with cathodic hydrogen production provides a pivotal path to solve the above problems.
Tao Chen +4 more
wiley +1 more source
野生动物学报, 1994 提高哺乳期海狸鼠成活率的初浅体会苏盛源，刘久香（锦州畜牧兽医学校）（锦州市畜牧兽医站）１９９０－１９９１年锦州郊区有７５户农民先后引入种海狸鼠５１０只。合计产仔２９９６只，哺乳期死亡４２５只，占产仔数１４％，死亡率偏高。怎样提高仔鼠成活率呢？结合两年...
苏盛源, 刘久香
doaj