Results 101 to 110 of about 70,029 (253)

Diagnosing scaling bottlenecks in 10 community conservation initiatives in southern and eastern Africa

open access: yesConservation Biology, EarlyView.
Scaling area‐based conservation, including initiatives led or comanaged by Indigenous Peoples and local communities, is a flagship goal of the Kunming‐Montreal Global Biodiversity Framework. Conservationists often aspire to scale initiatives, but this is rarely achieved in practice. Identifying and addressing factors that limit initiative adoption (i.e.
Thomas Pienkowski   +39 more
wiley   +1 more source

Holter检测中Q-Tc延长诊断心肌缺血的价值

open access: yesZhongshan Daxue xuebao. Yixue kexue ban, 1996
通过磁带式24h连续动态心电监测,对186例确诊心肌梗死连续病例及50例非冠心病者进行Q-Tc分析,并与传统ST段指标相比较。Q-Tc延长检出心肌缺血的敏感性与特异性分别为92.5%与96.0%;ST段指标诊断心肌缺血的敏感性与特异性分别为69.4%与100%。两组敏感性差别有高度显著性(P<0.01).两组特异性差别无显著性(P>0.05)。结果提示:Holter检测中Q-Tc的延长能作为心肌缺血的判断指标之一。
doaj  

两种检测方法在结核病诊断中的临床评价

open access: yesZhongguo shiyan zhenduanxue, 2008
目的探讨金标法(DICA)和酶标法(ELISA)测定结核抗体在结核病诊断中的临床价值。方法用上述两种方法分别检测结核病患者336例,非结核性呼吸道疾病60例,健康体检者50例。结果结核病组DICA法和ELISA法测定结核抗体的阳性率分别为88.4%和71.1%,特异性分别为95.0%和91.7%;非结核性呼吸道疾病组阳性率分别为5.0%和8.3%;健康对照组DICA法全部阴性,ELISA法有3例阳性(6%)。结论DICA法的敏感性和特异性均高于ELISA法,且ELISA法存在一定的假阳性 ...
丁华   +4 more
doaj  

A Survey Study of Motivation on Chinese Learning of Wroclaw Confucius Institute [PDF]

open access: yes, 2016
汉语学习动机是汉语习得中重要的情感因素之一,对学习者的习得效果、学习态度等有着重要的影响作用,波兰弗罗茨瓦夫大学孔子学院的汉语学习者同样如此。此外,汉语学习动机也是一个极其复杂的过程,可能受到学习者个人因素的影响,分析不同学习者的个人因素对汉语学习动机的影响,能在一定程度上反映学习者的动机变化情况,为波兰弗罗茨瓦夫大学孔子学院的汉语教学提供有益的教学借鉴。 目前,笔者还未发现针对波兰汉语学习者的动机研究。因此,本文选择了波兰弗罗茨瓦夫大学孔子学院汉语专业班、非汉语专业班和商务班的汉语学习者作为调查对象 ...
田彦茹
core  

Using miniaturized laboratory equipment and DNA barcoding to improve conservation genetics training and identify illegally traded species

open access: yesConservation Biology, EarlyView.
Abstract Illegal wildlife trade (IWT) is one of the largest global illegal activities, and it negatively affects biodiversity and sustainable development worldwide. DNA barcoding coupled with high‐throughput sequencing (i.e., metabarcoding) is useful in identifying taxa affected by IWT and has been used routinely for decades.
Maria Joana Ferreira da Silva   +9 more
wiley   +1 more source

Does Board Heterogeneity Matter for Firm Financial Performance? A Case Study of the Commercial Banking Sector in Sub-Saharan Africa [PDF]

open access: yes, 2016
政府政策、媒体和游说团体通常都鼓励董事会的多样化,因为他们都秉持这有助于提高公司绩效的理念。在本文中,我们探究是否存在证据表明追求董事会的多样化尤其关注董事的年龄、性别、种族、任期以及独立性对公司的财务业绩会有实际的好处。使用面板数据分析,我们检测了来自撒哈拉以南的非洲地区41个不同国家的202家银行2010—2014年的数据。我们发现没有经验证据表明在撒哈拉以南的非洲,董事会的年龄、经验和独立性的多样化会影响公司业绩。然而,我们发现存在有力的证据表明 ...
NANTUME CHRISTINE
core  

Hobbyist preferences for pet freshwater turtles

open access: yesConservation Biology, EarlyView.
Abstract The burgeoning pet trade is a primary threat to wild freshwater turtles worldwide. Although the risks from commercial exploitation of turtles have been discussed widely, there is little empirical research on preferences for pet turtles from a hobbyists’ perspective.
Jingjing Zhao   +7 more
wiley   +1 more source

高分子量角蛋白和TPO在甲状腺乳头状癌诊断中的价值

open access: yesZhongguo shiyan zhenduanxue, 2006
目的探讨高分子量角蛋白和TPO蛋白在甲状腺乳头状癌诊断与鉴别诊断中的作用。方法用免疫组化EnVision法测定50例甲状腺乳头状癌及110例甲状腺良性病变(结节性甲状腺肿伴乳头状增生50例、癌旁组织50例和滤泡性腺瘤10例)高分子量角蛋白和TPO表达情况。结果50例甲状腺乳头状癌高分子量角蛋白阳性46例,阴性4例;110例甲状腺良性病变高分子量角蛋白均阴性。50例甲状腺乳头状癌TPO阴性48例,阳性2例;110例甲状腺良性病变TPO均阳性。高分子量角蛋白和TPO在甲状腺乳头状癌诊断中的评价指标 ...
莫祥兰   +5 more
doaj  

The Effect of Goal Framework on Green Consumption Intention:Moderation of Appeal Type (Egoism vs. Altruism) [PDF]

open access: yes, 2016
目标框架是一种常见的广告设计形式,同时也是学术领域最受关注的研究主题之一。早期研究显示,学者们在一般情形下探讨获得目标框架与损失目标框架的说服效果差异,所得研究结论存在争议,即:一些学者认为,相比获得目标框架,损失目标框架的说服效果更好;相反,另有一些学者认为,相比损失目标框架,获得目标框架的说服效果更好。为此,近年来一些学者从信息描述形式(具体vs.抽象)、时间距离、调节导向、情绪、性别、信息来源可信度、信息侧重点、医疗服务类型、感知风险等不同视角出发 ...
陈金龙
core  

Assessing the integration of social marketing principles in ivory demand management interventions in China and Southeast Asia

open access: yesConservation 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

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