Results 41 to 50 of about 337,599 (159)
Zhongguo shiyan zhenduanxue, 2011 目的探讨血脂异常对糖尿病发病及相关危险因素的影响。方法在糖尿病流行病学调查基础上,根据血脂是否异常将人群分为两组,正常对照组A,实验组B,分别对两组糖尿病患病率进行统计学分析,并采用logistic回归分析筛选糖尿病的危险因素,根据危险因素的回归值β不同,判断各危险因素的影响性。结果 A组糖尿病患病率6.25%,B组糖尿病患病率28.08%,两组糖尿病的患病率χ2检验有统计学意义 ...
金晔, 王炜
doaj
Integrative Conservation, Volume 4, Issue 3, Page 442-463, September 2025.In this study, we analyze the conservation status of Ethiopia's amphibian and reptile diversity in terms of coverage with protected areas and global representation in conservation breeding facilities. We identify conservation gaps and suggest priorities for improvement.
Kolja Sperling +3 more
wiley +1 more source
孕中期高危孕妇外周血中胎儿游离DNA与高危产前诊断指征相关性分析
Zhongguo shiyan zhenduanxue, 2021 目的分析孕中期高危孕妇外周血中胎儿游离DNA(Cell-free fetal DNA,cffDNA)与高危产前诊断指征相关性。方法研究对象为2018年7月-2019年7月在遂宁市中心医院产前诊断中心接受外周血cffDNA筛查的3176例孕中期高危孕妇,记录高危产前诊断指征、cffDNA检测结果,分析不同高危产前诊断指征的孕中期高危孕妇外周血cffDNA筛查结果,以染色体核型检查结果为对照,分析孕中期高危孕妇外周血中cffDNA的筛查价值。结果3176例孕中期高危孕妇的产前诊断指征分别为高龄(年龄≥35岁)
赵咏梅, 张传英, 席海林
doaj
Monitoring population extinction risk with community science data
Journal of Applied Ecology, Volume 62, Issue 9, Page 2133-2147, September 2025.Our modelling framework provides a robust, computationally efficient and easy‐to‐apply tool for monitoring local persistence probability that can support global conservation efforts. This will complement the monitoring of species population viability in places where standardized monitoring is still lacking, but community science observations are common.
Orlando Acevedo‐Charry +8 more
wiley +1 more source
Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 2, Page 200-209, August 2025.Abstract Objectives Neonates with critical congenital heart disease (CCHD) are at risk for adverse early brain development and long‐term neurodevelopmental sequelae. Insulin‐like growth factor‐1 (IGF‐1) and insulin‐like growth factor binding protein‐3 (IGFBP‐3) are essential contributors to brain growth and maturation.
M. Nijman +33 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2008 目的探讨医院感染的危险因素并加以分析。方法对2003年至2006年间8424例住院患者医院感染情况进行回顾性调查分析。结果发生医院感染438例,总感染率为5.25%;感染部位以下呼吸道、泌尿道最为常见,其构成比分别是31.5%、18.2%;患者的年龄、病种、病情严重程度、住院时间、药物应用以及标本的送检率和医院的管理方式等都是引起医院感染的主要危险因素。结论通过对医院感染危险因素的调查与分析,使我们真正认识到医院感染所造成的危害,它直接影响到医院的医疗水平。总之,我们必须针对主要危险因素进行重点监控 ...
毕重秀, 朱洪权, 辛秀琴
doaj
Dizhen xuebao, 2018 本文介绍了余震危险性概率分析的概念，完整列出其相关公式的解析表达式并阐述了余震危险性概率分析的具体方法。以2017年九寨沟MS7.0地震为例，首先，求得该地震余震序列的相关参数，结果显示：九寨沟MS7.0地震余震序列理论最大余震震级约为ML5.3；b值约为0.784 1，明显低于中国西南地区同类型的其它地震，表明九寨沟地震余震区应力水平相对较高；p值约为1.109 7，明显高于中国西南地区同类型的其它地震，表明九寨沟地震余震序列随时间衰减较快。其次，计算此次地震余震与主震释放能量的比例关系，结果显示 ...
Wenhao Shen, Fang Yang
doaj +1 more source
Integrative Conservation, Volume 4, Issue 2, Page 143-153, June 2025.This study provided information on the abundance, population demography and activity pattern of an endangered species of Gekko badenii at the type locality of Ba Den Mountain, southern Vietnam. Local and international use and trade in Gekko badenii for food consumption and as pet were investigated and conservation recommendations highlighted.
Hai Ngoc Ngo +8 more
wiley +1 more source
, 2006 风险控制要求在风险识别和风险衡量的基础上,针对企业所存在的风险,积极采取控制措施,以消除风险因素或减少风险因素的危险性。在事故发生前,降低事故的发生概率;在事故发生后,将损失减少到最低限度,从而达到降低预期财产损失的目的。因此 ...
蒋楠
core