Results 21 to 30 of about 38,616 (156)

Multiple pregnancy with complete hydatidiform mole and coexisting normal fetus: systematic review and meta‐analysis of clinical outcomes from non‐randomized studies

open access: yesUltrasound in Obstetrics &Gynecology, Volume 67, Issue 3, Page 272-282, March 2026.
ABSTRACT Objective Complete hydatidiform mole and coexisting normal fetus (CHMCF) is a rare condition for which there is significant heterogeneity in diagnosis, counseling and management of complications. The objective of this study was to summarize the prevalence of clinical outcomes in reported cases of CHMCF.
N. Salmeri   +8 more
wiley   +1 more source

黄羊年龄鉴定指标的比较分析

open access: yes野生动物学报, 1991
对随机抽取的388号黄羊(Procapra gutturosa)某些指标(牙齿生长替换及磨损度、I牙冠比、体重、前臂长、后足长、尾长、眶间宽、身长、头长)与性别、年龄相关性的分析表明:前面项指标无显著性性别差异,且与年龄显著相关,可以单独作为年龄鉴定指标;后七项指标具显著性性别差异,与年龄关系不密切,只能用于区分成幼或3.5岁以前的年龄鉴别。另外发现高龄个体的牙齿磨损速度有降低的趋势,性成熟年龄雌性有超前雄性一年的趋势。
姜兆文, 徐利, 郑红
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  

Ultrasound features in early pregnancy for predicting abnormal karyotype in first‐trimester miscarriage

open access: yesUltrasound 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

Two granitic plutions in middle Western Kunlun Belt: their ages and possible sources [PDF]

open access: yes, 1999
对西昆仑中带2个重要岩体进行了年代学和同位素示踪方面的研究。单颗粒锆石U-Pb 测年结果表明,库地北岩体(404Ma)形成于加里东末期的一次岩浆活动;而阿卡阿孜山岩体中二长花岗岩215 Ma的年龄则表明原被整个划入海西期的岩体实际上至少包括一部分印支期的岩浆活动。Sm/Nd同位素数据表明这2个花岗岩的源区并不均一,有地壳物质的加入且不排除壳幔混合成因的可能性 ...
Li, JL, Sun, M, Yuan, C
core  

“The Benefits Far Outweigh the Challenges”: Examining Practices of Queer Shared Households in Canada

open access: yesSexuality, Gender &Policy, Volume 9, Issue 1, February 2026.
ABSTRACT This paper focuses on the experiences and practices of LGBTQ+ adults in Canada living in shared housing arrangements. Drawing on qualitative focus group data from eight participants aged 32–67 in three Canadian cities, we identify and discuss three key themes that characterize these arrangements: (a) the material drivers and impacts of shared ...
Celeste Pang   +4 more
wiley   +1 more source

定量CT对老年骨质疏松的诊断

open access: yesZhongguo shiyan zhenduanxue, 2002
目的 对不同年龄段老年性骨质疏松的诊断提供定量CT骨密度范围值。方法 用日本ST5 0 0 0TCT扫描机检测 184例 6 0~ 79岁老年腰椎 2 - 4椎体定量CT。结果 随年龄增长腰椎骨密度定量CT值下降 ,女性较男性更明显。男性 82例 ,女性 10 2例。结论 骨质疏松与年龄呈正相关 ...
韩邕, 吕全勇, 孟令辉, 张光
doaj  

The Norm of the Learning-Disability Checklist for Elementary and Middle School Children (in Chinese) [PDF]

open access: yes, 2000
The Learning-Disabilities Checklist for Elementary and Middle School Children was administered to 1067 subjects in Shanghai. The data analyses brought us the following: 1) The mean and standard deviation of each variable of raw data; 2) There were ...
Chen, G. P., Shan, Y., Shao, Z. F.
core  

Endometrial assessment in abnormal uterine bleeding: transvaginal ultrasound alone may not be good enough

open access: yesUltrasound 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

78例子宫肉瘤临床病理分析

open access: yesZhongguo shiyan zhenduanxue, 2011
目的探讨不同组织学类型的子宫肉瘤临床病理特点。方法应用形态学观察及免疫组织化学染色回顾性分析78例子宫肉瘤临床及病理特点,并复习相关文献。结果 (1)78例子宫肉瘤中癌肉瘤35例(44.9%)、平滑肌肉瘤25例(32.1%)、子宫内膜间质肉瘤16例(20.5%)、腺肉瘤2例(2.6%)。(2)35例癌肉瘤,患者年龄16-75岁,平均年龄57.3岁。肿瘤多位于宫腔内(27例,77.1%)。肉瘤成分中含有同源性成分32例(91.4%),含有异源性成分3例(8.6%)。病理分期以I期最多(21例,60 ...
张亚男   +5 more
doaj  

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