Results 31 to 40 of about 337,599 (159)
, 2002 在保险领域,“道德危险”与保险本身的功能背道而驰,因而防治“道德危险”成为各国保险立法的重要目标。我国《保险法》通过确立保险利益、保险代位权等一系列举措,以防治道德危险。但随着社会发展,保险道德危险问题仍屡见不鲜,严重制约了我国保险业的快速发展 ...
黄维, 魏建文
core
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Arsenic presents a critical duality as both a hazardous environmental pollutant and an indispensable material for advanced semiconductor technologies. This study proposes an integrated reductive vacuum sublimation strategy, assisted by carbon and lead additives, to purify crude arsenic containing high oxygen (7.4%) and antimony (1326 mg kg−1).
Hongrui Xiang +6 more
wiley +1 more source
北京地区风湿性心脏病病人缺血性脑卒中发生率及影响因素随访研究
Huli yanjiu, 2008 摘要： （免费在线浏览）摘要：［目的］了解北京地区风湿性心脏病病人缺血性脑卒中的发生率及其影响因素。［方法］对单一中心的520例风湿性心脏病病人进行随访调查,随访6.75年±4.03年,累计随访3 227人年。［结果］该组风湿性心脏病病人脑卒中年发生率平均为5.3%。各年龄段的脑卒中发生率:<60岁为1.2 %,合并危险因素者1.6%,不合并危险因素者1.0%;60岁～70岁为4.0 %,合并危险因素者5.1%,不合并危险因素者3.1%;71岁～80岁为6.7%,合并危险因素者8.8 ...
王慧, 张丽
doaj
Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 5, Page 613-622, May 2026.ABSTRACT Objectives To evaluate the effect of aspirin on gestational age at delivery due to preterm pre‐eclampsia (PE) in women with chronic hypertension (CH), to assess the predictive performance of the Fetal Medicine Foundation (FMF) first‐trimester competing‐risks model for preterm PE in this high‐risk group and to evaluate how parity, previous PE ...
D. L. Rolnik +23 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2014 慢性肾脏病发病率逐年增高,进入终末期肾脏病（ESRD）的患者逐年上升。而透析病人心血管疾病的发病率和死亡率高且预后极差[1],其中约50%患者死于心血管并发症。尽管传统的心血管疾病（CVD）危险因素如高血压、血脂异常、抽烟和糖尿病相当普遍,但它们不能独立解释ESRD人群高CVD危险性,其中非传统危险因子尿毒症氧化应激状态被认为是心血管疾病的危险因素,这种观点认为 ...
张红岩 +3 more
doaj
Longitudinal maternal hemodynamics in high‐risk pregnancies with different subtypes of pre‐eclampsia
Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 5, Page 623-634, May 2026.ABSTRACT Objective To evaluate maternal cardiac adaptation during pregnancy by comparing longitudinal hemodynamic profiles between women identified as high risk for preterm pre‐eclampsia (PE) who subsequently developed preterm PE, term PE or remained unaffected, as well as low‐risk women.
J. Lin +10 more
wiley +1 more source
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract Spatial segregation in at‐sea distribution is frequently observed in seabirds and can have important implications for conservation and management. Globally, many albatross and petrel populations are declining due to bycatch in fisheries. In South Georgia, the decrease in wandering albatrosses (Diomedea exulans) differs among breeding sites ...
V. Warwick‐Evans +3 more
wiley +1 more source
Integrative Conservation, Volume 4, Issue 4, Page 665-674, December 2025.Using a diagnostic mitochondrial marker gene, we document the presence of furry‐eared dwarf lemurs, a species known from Madagascar's eastern montane rainforests, in several forest fragments across the island's central highlands. These findings raise new questions about when this species colonized these sites, how they tolerate these changing and ...
Marina B. Blanco +27 more
wiley +1 more source
Shuitu Baochi Xuebao, 2003 以长江上游典型区彭州市为例,在该区SOTER(1∶50 000)数据库的支持下,选取地貌类型 、坡度、植被覆盖率、土地利用、土壤类型等作为评价因子,运用专家权重模型,将研究区 分为无险型、轻险型、危险型、强险型和极险型5种类型,输出了土壤侵蚀危险度评价图, 并指出了各种类型的防治侵蚀的措施.
周红艺 +3 more
doaj +2 more sources
Community‐informed and codesigned research to understand the impacts of railways on wildlife
Conservation Biology, Volume 39, Issue 5, October 2025.Abstract Trains cause mortalities of several animal species, but the ecological impacts of railways are understudied. Most research on wildlife–train collisions has focused on large mammals, but understanding railway‐specific risks for underrepresented taxa, especially vulnerable species, is important for developing effective mitigation strategies ...
Kyle D. Vincent +5 more
wiley +1 more source