Results 31 to 40 of about 792,519 (163)
Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 3, Page 376-384, March 2026.ABSTRACT Objective To investigate whether combining abnormal morphological features observed on ultrasound in live pregnancies that ended in a first‐trimester miscarriage can predict an abnormal karyotype. Methods This retrospective observational cohort study was conducted at the early‐pregnancy assessment unit at University College London Hospital ...
T. Setty +5 more
wiley +1 more source
, 2006 目的研究我国城市老年人的生活和心理状况及其增龄变化。方法以《中脉老年生活质量指数调查问卷》为依据,对七个城市2 225位60~99岁老年人的调查数据进行分析。结果大多数老年人的教育程度和经济收入偏低,但能保持较好的心情,生活满意度和主观幸福感较高;随着年龄的增高,参加活动的人数减少,孤独寂寞的人数增加,家庭精神生活满意度降低,人际关系的广度和深度也有所下降,但更多的高龄老年人仍能保持平静满足的心态。结论大多数老年人的社会经济状况偏低,但心理状况较好;随着年龄的增高,更多人的心情趋于平静满足 ...
汪月峰 +7 more
core +1 more source
Zhongguo 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
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Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 1, Page 79-88, January 2026.ABSTRACT Objective To evaluate the proportion of optimal assessments of endometrial thickness (ET) achieved by transvaginal ultrasound (TVS) compared with a multimodal (MM) sonographic approach in women with abnormal uterine bleeding (AUB). Methods This prospective observational study was a subset of the EPI‐SURE study conducted between June and ...
S. Nijjar +5 more
wiley +1 more source
Deep quantile regression for growth and maturation reaction norms
Methods in Ecology and Evolution, Volume 17, Issue 1, Page 111-124, January 2026.Abstract Understanding species' growth and maturation responses to anthropogenic and environmental pressures is crucial for tracking demographic shifts, phenotypic change and ensuring population sustainability. Traditional regression methods often focus on modelling the conditional mean of life‐history traits, potentially overlooking heterogeneity in ...
Guankui Liu +4 more
wiley +1 more source
Shuitu 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
Zhongguo 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
Regulation &Governance, Volume 20, Issue 1, Page 35-63, January 2026.ABSTRACT Existing literature largely agrees that authoritarian regimes establish channels for political participation to gather valuable information on citizens' anti‐regime sentiments and policy preferences and to supervise lower‐level bureaucrats and firms.
Anton Bogs
wiley +1 more source
Public perception of Ghana's Free Senior High School policy: A north–south comparative analysis
Review of Policy Research, Volume 43, Issue 1, January 2026.Abstract Ghana's Free Senior High School (SHS) policy, implemented in 2017, aims to increase access to secondary education, promote equity, enhance educational outcomes, and foster human capital development. This study examines public perception of the Free SHS policy, focusing on the variations between the northern and southern regions of Ghana and ...
Michael K. Dzordzormenyoh +3 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2020 目的考察不同年龄段人群动脉粥样硬化(AS)相关危险因素水平及其致病风险。方法以2016年1月至2019年1月我院收治的AS相关疾病住院患者4089例为研究对象,分为中年组、老年组和高龄老年组。根据血管造影、CT血管成像或外周血管超声检查确立AS诊断。结果①年龄越大,动脉血管严重病变的比例越高。②高血压病、糖尿病的患病率均以老年组最高,显著高于中年组。③肥胖、血脂异常、吸烟、饮酒则是中年组最高,高龄老年组最低 ...
王金凤 +5 more
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