Results 31 to 40 of about 284,826 (192)
, 1983 笔者有机会参加了1982年11月24—28日在日本东京召开的第4届国际复合材料会议(ICCM-Ⅳ),会后应日本朋友的邀请参观了东京、京都和大阪三个城市的八个大学、研究所和产业公司,所见所闻对日本在复合材料的研究与开发中取得的成就颇有感触,他们善于向西方先进技术学习,为我所用地加以改进,超过西方,并向西方出口,他们的有些经验是值得我们借鉴的,日本是我们一衣带水的近邻,加强与日本的学术交流,将是我们向世界先进科学技术学习的捷径之一。 本文将介绍日本复合材料研究与开发的简要历史与现状,学术组织 ...
张双寅
core +2 more sources
Zhongshan Daxue xuebao. Yixue kexue ban, 2001 【目的】探讨细胞周期调节因子在鼻咽癌复发中的作用。【方法】采用LsAB 法同时检测69 例患者原发和复发 鼻咽癌组织中p53、MDM2 、p21ras和p21WAF1蛋白的表达。【结果】复发癌与原发癌相比:阳性表达率方面, p53 蛋白(78 %和 80 %)或MDM2 蛋白(84%和83%)很相近, p21ras蛋白(73 %和93 %)或p21WAF1蛋白(52 %和84 %)明显下降;高表达率方面, p53 蛋白(42%和51 %)很相近, MDM2 蛋白(57 %和32 %)明显升高 ...
李锦添 +4 more
doaj
Structured decision‐making as a framework to incorporate social equity into conservation decisions
Conservation Biology, EarlyView.Abstract Many conservation challenges require negotiating trade‐offs between the needs of different actors. Global frameworks such as the Kunming–Montreal Global Biodiversity Framework explicitly call for diverse participation and social equity in conservation decision‐making.
Emily Massingham +2 more
wiley +1 more source
乳腺癌根治术患者miRNA-23a表达水平与术后复发转移的关系
Zhongguo shiyan zhenduanxue, 2018 目的探讨乳腺癌根治术患者miRNA-23a表达水平与术后复发转移的关系。结果选取2013年3月至2016年3月本院收治的乳腺癌根治术患者160例,依据2年内复发转移情况分为复发组(n=50例)和未发组(n=110例),采用实时荧光定量聚合酶联反应法(RT-PCR)检测miRNA-23a表达水平,分析miRNA-23a表达水平与术后复发转移的关系。结果单因素分析结果显示,复发组和未发组肿瘤类型、直径、TNM分期、淋巴结转移、雌激素受体(ER)和孕激素受体(PR)、miRNA-23a表达水平比较 ...
周永安, 赵德庆
doaj
Subspecies taxonomy reflects social and geographic patterns of taxonomic effort in tetrapods
Conservation Biology, EarlyView.Abstract Subspecies have been used in conservation biology to account for intraspecific patterns in genetic diversity, which is crucial to long‐term population viability. Although over 3200 subspecies are currently assessed by the International Union for Conservation of Nature Red List, their biological relevance remains controversial.
Jhonny J. M. Guedes +3 more
wiley +1 more source
Using the capabilities approach to achieve people‐centered conservation
Conservation Biology, EarlyView.Abstract Top‐down interventions carried out by state and nonstate institutions to conserve biodiversity and improve the lives of forest‐proximate people (FPP) in the Global South tend to reflect economistic understandings of human well‐being. More progressive and people‐centered conservation projects are guided by normative visions of how the world ...
Arthur Rodrigues +4 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2013 目的探讨微小残留病（MRD）监测在B急淋（B-ALL）复发预测及指导治疗中的临床意义。方法选择2008年1月到2012年7月32例初治急性B淋巴细胞白血病160份骨髓标本,利用四色多参数流式细胞术（FCM）进行微小残留病检测。以CD45/SSC设门,选择2-3组四色抗体组合,从诱导化疗第33天开始,每1-3个月监测MRD一次,动态监测MRD变化与白血病复发的关系。结果按照诱导治疗第33天的MRD水平分成三组,高（MRD>1×10-2）,中（1×10-2≥MRD≥1×10-4）,低（MRD10 ...
孔令环 +4 more
doaj
Genomics‐informed management of ex situ populations
Conservation Biology, EarlyView.Abstract The European Association of Zoos and Aquariums (EAZA) manages insurance populations for hundreds of species through its EAZA ex situ programs (EEPs). EEPs help safeguard against extinction in the wild and provide source populations for genetic rescue programs.
Cock van Oosterhout +8 more
wiley +1 more source
, 2011 本发明涉及适用于酸性电解液液流储能电池的一种有机无机复合离子交换膜及其制备方法。本发明还涉及包含本发明聚合物离子交换膜的酸性电解液液流储能电池。该类复合离子交换膜制备方法简单，容易实现大批量生产。制备的复合离子交换膜具有优良力学强度，其酸性电解液液流储能电池中具有优良的质子传导性和优异的阻隔正负极离子渗透性 ...
史丁秦, 张华民, 李先锋
core
Optimizing biodiversity offsetting for habitat succession and colonization dynamics
Conservation Biology, EarlyView.Abstract Biodiversity offsetting aims to compensate for ecological losses from development through conservation and restoration. However, its long‐term outcomes under repeated impact–offset cycles remain uncertain. Using a conceptual forest succession model, we evaluated how offset outcomes are affected by interactions among compensation scale ...
Konstans Wells +4 more
wiley +1 more source