Results 21 to 30 of about 6,070 (191)
Zhongguo shiyan zhenduanxue, 2019 目的主要通过多项相关指标对比分析来研究如何在冠状动脉介入术中防止支架贴壁不良。方法选取冠状动脉介入支架置入术治疗患者503例为实验组,共置入支架708枚。对照组为同期冠状动脉介入支架置入术且冠状动脉造影结果较为相似的患者579例,共置入支架753枚。实验组以高于支架命名压释放支架,对照组以支架命名压释放支架。两组均经有经验医师目测评估、SB Subtract评估、光学相干断层成像(optical coherence tomography,OCT)检查来评定支架是否需后扩张 ...
刘永利 +4 more
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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
Conservation Biology, EarlyView.Abstract Consumer demand for ivory perpetuates the unsustainable and illegal killing of African elephants and other wildlife species. Interventions that aim to change consumer behavior are increasingly recognized as a crucial element of demand management. However, poor design and implementation have limited their effectiveness.
Molly R. C. Brown +2 more
wiley +1 more source
Cooperative Learning and Interpreting: A Study on off-Class Group Training [PDF]
, 2016 中国古典名著《礼记》中有这么一句名言“独学而无友，则孤陋而寡闻”。这句话强调了学友之间的合作交流于知识积累的重要性。合作学习作为一种常见的教学方法，指的是在学习过程中引导学生通过合作而完成某项学习目标。阿拉巴马大学奥克斯福德教授（OxfordR.L.）对合作学习进行了这样的评价：合作学习是一种高度结构化的，基于心理学和社会学的教学策略，这种策略通过小组合作学习形式，使学生完成一致的学习目标（1997:444）。在过去的几十年里，许多研究学者把合作学习的理论进行了统整和拓展 ...
鲍蕾
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生物可降解高分子材料载内皮前体细胞CD34抗体涂层支架防治犬冠脉再狭窄的研究
Zhongguo shiyan zhenduanxue, 2007 目的评估携带内皮前体细胞CD34抗体冠脉内支架对冠状动脉支架置入术后血管内膜增生的影响。方法以多聚物为载体应用N-琥珀酰亚胺基-3-（2-吡啶二硫）-丙酸酯（SPDP）方法制成内皮前体细胞CD34抗体洗脱支架。以球囊扩张法建立犬冠状动脉狭窄模型,随机分为三组,每组5只,将紫杉醇支架、CD34抗体支架、裸支架分别植入到每组犬的冠状动脉狭窄段,4周后处死取出支架段血管行病理学观察及计算机图像分析血管总面积（TA）、内膜增生面积（IA）以及内膜增生面积百分比 ...
刘斌, 李淑梅, 张基昌, 史永锋
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Conservation Biology, EarlyView.Abstract Recognition and engagement of Indigenous Peoples and local communities (IP&LCs) and other traditional knowledge (TK) holders in formal biodiversity governance remain limited, despite their significant contribution to the conservation and sustainable use of biodiversity through their knowledge, innovations, practices, and land stewardship.
Kinga Öllerer +8 more
wiley +1 more source
Research on the teaching of the Extended meaning of Compound directional complement——In the center of Visualization and Explicit instruction which based on Scaffolding Instruction [PDF]
, 2016 趋向补语是汉语中一种非常独特的语法结构成分，它不仅难学，而且难用，是对外汉语教学的重点。复合趋向补语又在简单趋向补语之后加上了立足点与参照物，无疑又加深了难度。其中，意义更加虚化的引申用法对于外国学生来说便更是重中之重，难中之难了。目前，国内对于趋向补语引申用法的研究已颇为丰富，也比较成熟了，针对偏误进行分析、研究习得顺序的论文也相对较多，但是专门针对其进行教学设计和实证研究的论文却很少，用于其的教学方法也比较单一。 笔者首先对复合趋向补语的引申用法进行了归纳和总结，然后对支架式教学 ...
杨敏
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Using incentive payments to promote human–carnivore coexistence
Conservation Biology, EarlyView.Abstract For many large carnivores, minimizing the financial burden they impose on local people is critical to their conservation. Incentive‐based programs that provide people with financial benefits for taking pro‐conservation actions or achieving conservation goals are a promising tool for promoting human–carnivore coexistence. Although the number of
Adam Pekor +9 more
wiley +1 more source
Geographic risks to functional groups of mammals and birds from habitat loss in Mexico
Conservation Biology, EarlyView.Abstract There is a need to quantify the impact of habitat loss due to anthropogenic factors on different aspects of biodiversity, such as functional trait diversity represented by functional groups (FGs). We developed a metric to assess the weighted risk of loss of habitat for 33 FGs of mammals and 36 FGs of birds in Mexico based on potential ...
Fernando Mayani‐Parás +4 more
wiley +1 more source
An affinity bioartificial liver system based on polyethersulfone membrane modified with polydopamine and lysine [PDF]
, 2016 目前由肝功能衰竭、肝炎甚至肝癌引发的死亡率呈现快速的上升趋势。而肝移植是迄今为止最直接有效的治疗手段，但由于供体肝来源短缺、费用昂贵以及免疫排斥反应等问题的存在，严重制约了肝病治疗技术的发展。随着组织工程技术的不断发展，人工器官的研究已进入飞速发展阶段，尤其是生物人工肝（BAL）的出现重新燃起了肝病患者的希望。生物人工肝除了具有生物转化、活性物质合成以及物质代谢等作用外，还具备血液净化的功能，使其在肝病治疗领域吸引着愈来愈多学者的关注 ...
刘慧娟
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