Results 41 to 50 of about 48,524 (191)

超声检查联合CA125、OPN检测在卵巢癌诊断中的应用

open access: yesZhongguo shiyan zhenduanxue, 2020
目的探讨超声检查联合糖类抗原125(CA125)、骨桥蛋白(OPN)检测在卵巢癌诊断中的应用价值。方法选取2017年1月至2018年3月在我院治疗的卵巢肿瘤患者89例,其中良性肿瘤51例,恶性肿瘤38例,均采用彩色超声检查,同时检测血清CA125和OPN水平。结果超声检查诊断卵巢癌灵敏度、特异度、阳性预测值和阴性预测值分别为76.32%、92.16%、87.88%和83.93%;恶性肿瘤患者血清CA125和OPN分别为143.92(34.38,210.29)U/ml和167.28(41.29,200 ...
季春艳, 曾艳, 程瑶瑶, 窦礼敏
doaj  

The Research about Chinese Language Teaching Based on Language Learning Behaviors [PDF]

open access: yes, 2016
近年来,课堂教学逐渐开始从传统的“以教师为中心”转向为“以学生为中心”的教学。汉语教学中,即使在同一个班级、环境、教师教学下学习,学习者的学习效率则不同。这差异的存在对学习者汉语学习水平产生了极大的影响。许多研究表明,学习者的学习还取决于学习者本人的学习行为,并强调学习者良好学习行为习惯培养的重要性。 本研究以语言学习行为为一个深入点来分析汉语教学情况,对学习者在汉语学习过程中表现出的学习行为进行探讨研究,并基于学习者的语言学习行为提出以学习者为主体的汉语教学建议 ...
ANGELY SETIAWAN(薛亦雯)
core  

Structured machine learning modeling to support conservation of deep‐sea benthic biodiversity

open access: yesConservation Biology, EarlyView.
Abstract Biodiversity monitoring programs need to deliver accurate, timely, and actionable predictions. To establish a predictive monitoring program for deep‐sea benthos of the Santos Basin, Brazil, we developed a two‐stage structured model that allowed comparison of biodiversity predictions obtained from environmental simulations (2M‐Sim).
Gustavo Fonseca   +23 more
wiley   +1 more source

CEAmRNA、CEA蛋白检测在良恶性胸腹水中鉴别诊断的价值

open access: yesZhongguo shiyan zhenduanxue, 2003
目的 评价检测CEAmRNA ,CEA蛋白对良恶性胸腹水鉴别诊断的价值。方法 采用RT PCR方法对 37例胸水和 31例腹水CEAmRNA进行检测 ;CEA蛋白用时间分辨免疫荧光分析法测定。结果 恶性胸水组中CEAmRNA ,CEA蛋白阳性率明显高于良性胸水组 (P
陈杰, 张雪华, 张行, 潘锵荣
doaj  

The Analysis of China‘s Wage Profile and its Determinants: based on the Data from CHNS Questionnaire Surveys. [PDF]

open access: yes, 2016
工资问题研究一直是劳动经济学领域的热点问题。中国改革开放以来,劳动力市场发生了巨大的变化。我国劳动力工资分布如何?劳动力工资的决定因素有哪些?本文将对我国劳动力市场这些基本而重要的问题,利用代表性的微观调查数据和前沿的计量经济学方法,进行科学的考察和分析。 文章第一部分首先分别考察工资-时间分布和工资-年龄分布。工资-时间的分布符合中国经济实际增长的情况,保持了稳步增长的趋势。工资-年龄分布在总体上以及男性群体、东部省份群体、大学及以上群体、城市地区、私营三资企业群体符合倒U型分布,实际工资在50 ...
翟柯
core  

Overlap of nonbreeding wandering albatrosses with fisheries and implications for colony‐specific population trajectories at South Georgia

open access: yesConservation Biology, EarlyView.
Abstract Bycatch in fisheries is one of the most serious threats to pelagic seabirds, causing major population declines. Mitigation measures can reduce bycatch substantially, but many fisheries fail to apply best practices, and seabird mortality remains high.
V. Warwick‐Evans   +2 more
wiley   +1 more source

A Comparative Study on Gestation Narrative Between Bi Shumin and Chi Li [PDF]

open access: yes, 2016
生育是人类繁衍后代、生生不息的重要手段,从古至今孕育作为社会生活的重要内容,承担着重要的社会功能。生育文化在中国传统社会中的位置举足轻重,而在古代女性文本中,孕育一直是一个禁忌性的话题,这与女性身体的禁忌密切相关。而在五四以来的新文学女性写作中,孕育事件作为独特的性别经验,则成为女作家们思考与创作的一个重要源泉。20世纪80年代以来,铁凝、王安忆、池莉、毕淑敏等一批女作家,以独特的女性视角介入孕育叙事文本的写作,为人们展现了女性独特生命经验的新鲜书写。本篇论文主要以毕淑敏、池莉的四部孕育叙事文本为例 ...
胡梦晓
core  

Spatial identification of areas suitable for other effective area‐based conservation measures in the European Union

open access: yesConservation Biology, EarlyView.
Abstract Although significant biodiversity has been safeguarded by protected areas (PAs), biodiversity trends continue downward. Within the frameworks of the EU Biodiversity Strategy for 2030 and the new EU Restoration Regulation (2024), conserving critical biodiversity areas is essential.
George Kefalas   +14 more
wiley   +1 more source

A more‐than‐human political ecology of Indonesian songbird trade

open access: yesConservation Biology, EarlyView.
Abstract Since its inception, conservation science has considered wildlife trade a problem. In focusing on conservation outcomes, conservationists almost completely ignore the welfare of traded animals and plants and the harms they endure. We developed a political ecology approach that incorporates the interconnectedness of people with animals and ...
Sicily Fiennes   +9 more
wiley   +1 more source

SP70检测在良恶性胸腔积液鉴别诊断中的临床应用价值

open access: yesZhongguo shiyan zhenduanxue, 2014
目的探讨SP70检测在良恶性胸腔积液鉴别中的临床应用价值。方法选取2011年4月至2011年12月在我院就诊并经临床明确诊断为良性胸腔积液和恶性胸腔积液患者各90例,采集患者胸腔积液标本,检测SP70、CEA、Cyfra21-1和NSE水平,并进行比较分析。结果恶性胸腔积液组患者SP70、CEA、CYFRA21-1检测阳性率分别为72.2%、58.9%和53.3%,显著高于良性胸腔积液组的10.0%、13.3%和22.2%(P0.05)。恶性胸腔积液组SP70敏感度、特异度和符合率分别为72.2%、89.
邓石雄, 刘映云, 李尔凡, 白艳
doaj  

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