Results 41 to 50 of about 1,002,629 (153)

Risk of minor congenital heart defect in infants conceived via assisted reproductive technology: cohort study from the Copenhagen Baby Heart Study

open access: yesUltrasound in Obstetrics &Gynecology, Volume 68, Issue 1, Page 59-67, July 2026.
ABSTRACT Objective Infertility affects up to 20% of couples in high‐income countries, which has led to an increased use of assisted reproductive technology (ART). While previous studies have linked ART to a higher risk of major congenital heart defects (CHD), less is known about the associated risk of minor CHD.
F. Kyhl‐Svart   +16 more
wiley   +1 more source

妊娠中期唐氏筛查在高龄孕妇产前诊断中必要性探讨

open access: yesZhongguo shiyan zhenduanxue, 2011
目的探讨唐氏筛查在高龄孕妇产前诊断中的意义。方法有产前诊断指征的高龄孕妇899人,孕中期17-24周行羊膜腔穿刺,取羊水检查胎儿染色体。结果发现染色体异常6例在146例唐氏综合症筛查阳性(即孕妇血清甲胎蛋白(AFP)和游离性雌三醇(uE3)以及游离人绒毛膜促性腺激素(-βhCG)三联指标检测,将三联指标测定值输入唐氏综合征风险计算软件,以1/270为高危切割值,≥1/270确定为唐氏综合征筛查阳性)的高龄孕妇中,发现染色体异常6例唐氏综合征发生率为4.11%(6/146 ...
宋桂宁   +5 more
doaj  

生物学衰老标志物与心脏瓣膜病有关联

open access: yes浙江大学学报. 医学版
目的分析生物学衰老标志物表型年龄和表型年龄加速与心脏瓣膜病的关联性。方法从英国生物库2006—2010年纳入的人群中筛选符合纳排标准的研究对象。计算表型年龄和表型年龄加速,运用Cox多因素分析探究表型年龄和表型年龄加速是否是心脏瓣膜病的独立危险因素,并采用剔除缺失值和亚组分析的方法进行敏感性分析。通过受试者操作特征(ROC)曲线比较表型年龄、表型年龄加速对心脏瓣膜病的预测准确性,并绘制基于逻辑回归的临床决策曲线。结果本研究共纳入411 687名参与者,其中患有心脏瓣膜病14 258例(中位随访时间12 ...
刘 湘婧   +5 more
doaj   +1 more source

Factors Influencing Minority Group Acceptance: Evidence From the 2021–2022 Korean National Human Rights Survey

open access: yesAsian Politics &Policy, Volume 18, Issue 3, July 2026.
ABSTRACT Using data from the 2021–2022 Korean National Human Rights Survey (N = 33,741), this study examines how demographic, ideological, religious, and educational factors shape acceptance of six minority groups in South Korea. Logistic regression analyses show that women, individuals with higher education and income, and those exposed to human ...
Yuri Lee
wiley   +1 more source

高龄老人独居倾向增加

open access: yes, 2015
长期以来,在传统孝道文化的影响下,我国老年人(特别是高龄老人)往往选择与成年子女一起居住。这种居住方式也是老年人最好的选择,使他们能够安享幸福的晚年生活。然而,随着社会经济和城镇化的迅速发展,我国的家庭结构和社会价值观念已经发生了很多变化,特别是家庭核心化趋势明显,老年人独立居住(国内也称空巢老人)的比例在急剧升高。在当今中国,与成年子女一起居住仍然是我国高龄老人最感到更幸福吗?中国科学院心理健康重点实验室韩布新研究员的课题组使用中国老年人健康长寿调查数据库 ...
陈天勇
core   +1 more source

Wings of Change: Motivations, Challenges, and Environmental Concerns Among Birdwatchers 变革之翼:观鸟者的动机、挑战与环境关切

open access: yesWildlife Letters, Volume 4, Issue 2, Page 83-93, June 2026.
Birdwatching in Nepal has high potential to support avain biodiversity and tourism. Conservation was identified as the primary motivation for birdwatching, followed by enjoyment and achievement purposes. Health/wellbeing benefits, social and economic factors showed moderate representation, whereas academic motivation played a relatively minor role ...
Kamal Raj Gosai, Hem Bahadur Katuwal
wiley   +1 more source

不同年龄木麻黄林地根际土壤养分含量和酶活性动态

open access: yesShuitu Baochi Xuebao, 2006
在福建省东山县滨海沙地,开展了不同年龄木麻黄林地根际和非根际土壤养分和酶活性的测定,研究结果表明:(1)不同年龄木麻黄林地根际pH小于非根际土壤,随林龄增长根际土壤和非根际土壤pH值均表现为下降趋势;根际土壤有机质、全氮和水解氮含量高于非根际土壤,各土层有机质含量在中龄林时最大;从中龄林阶段至过熟林,水解氮含量下降;全磷和速效磷含量从幼林发育至中龄林、近熟林逐渐减少,至过熟林略有恢复;根际土壤全钾、速效钾含量呈增加趋势。(2)不同年龄木麻黄林地根际CEC值、水解性总酸度、交换性盐基总量、交换性Mg^2 ...
叶功富   +5 more
doaj   +2 more sources

Comparative Evaluation of Chemical and Physical Expansive Agents in Cemented Paste Backfill: Expansion Behavior, Mechanical Response, and Microstructural Mechanisms

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT This study presents an assessment of four representative expansive additives—calcium sulphoaluminate–calcium oxide, magnesium oxide, sodium lauryl sulfate, and sodium abietate—and their effects on the expansion behavior, mechanical development, and microstructural characteristics of cemented paste backfill (CPB).
Lijie Guo   +5 more
wiley   +1 more source

北京2183例女性高危型HPV感染状况分析

open access: yesZhongguo shiyan zhenduanxue, 2019
目的了解北京高危人乳头瘤病毒(HPV)在女性患者中的感染状况。方法对2017年来我院就诊的2183例女性的高危型HPV基因分型检测数据进行回顾性分析。结果在2183例样本中,高危型HPV检出407例,总检出率18.61%,15个高危亚型均有检出,检出最多的5种亚型依次为HPV52、51、16、58、39;根据年龄的不同高危HPV感染率不同,随着年龄增大,感染率曲线先下降后回升;绝经期女性高危HPV总阳性率高于育龄期女性,绝经期女性高危HPV亚型排在前5位的是:HPV52、51、58、66、56亚型 ...
武利涛   +7 more
doaj  

Machine Learning Model for an App‐Based Tool to Assist With the Diagnosis of Canine Atopic Dermatitis

open access: yesVeterinary Dermatology, Volume 37, Issue 2, Page 236-246, April 2026.
Canine atopic dermatitis (cAD) is a chronic condition requiring life‐long management. Accurate diagnosis can be challenging, with no reliable diagnostic test. This study aimed to generate a simple diagnostic model for cAD. This model is a relevant prototype for an app‐based tool to support general practitioners in the diagnosis of cAD alongside ...
Xavier Langon   +2 more
wiley   +1 more source

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