Results 51 to 60 of about 1,002,629 (153)

Life Stage‐Specific Genetic Diversity and Landscape Characteristics Collectively Influence Genetic Recovery in Pometia pinnata Population 生活史阶段特异的遗传多样性与景观特征对番龙眼种群遗传恢复的协同影响

open access: yesIntegrative Conservation, Volume 5, Issue 1, Page 137-149, March 2026.
Pometia pinnata demonstrated life‐stage‐specific genetic responses to landscape features, with asymmetric gene flow patterns and population recovery following historical bottlenecks, revealing complex topographic and demographic influences on forest genetic structure.
Madhuparna Chatterjee   +5 more
wiley   +1 more source

年龄对动脉粥样硬化相关危险因素的影响

open access: yesZhongguo 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
doaj  

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

自发高血压大鼠心肌肥厚与心室颤动阈值的关系

open access: yesZhongshan Daxue xuebao. Yixue kexue ban, 2006
【目的】探讨自发高血压大鼠心肌肥厚与心室颤动阈值的关系。【方法】20只雄性自发高血压大鼠,随机分成10周龄组(n=10)和18周龄组(n=10);10只10周龄雄性Wistar大鼠为对照组。分别测定3组大鼠的动脉收缩压、心脏质量指数、心室有效不应期和心室颤动阈值。【结果】①自发高血压大鼠的动脉收缩压和心脏质量指数明显高于Wistar大鼠(P〈0.001),心室颤动阈值明显低于Wistar大鼠(P〈0.001);②自发高血压大鼠中 ...
黄至斌   +4 more
doaj  

肾移植患者发生全麻苏醒期高血压危象的影响因素分析

open access: yesZhongguo shiyan zhenduanxue, 2023
目的 探讨肾移植患者发生全麻苏醒期高血压危象的影响因素。方法 回顾性分析2019年9月—2021年9月期间吉林大学第一医院进行的98例急诊同种异体肾移植手术的临床资料。根据麻醉苏醒期的血压分为高血压危象组(49例)和血压稳定组(49例),对比两组的临床资料并分析肾移植患者发生全麻苏醒期高血压危象的影响因素。结果 高血压危象组与血压稳定组相比,前者平均年龄较大、BMI值较高、受体存在原发性高血压的比例较大、高血压脑出血供肾的比例较大、T1和T2时的收缩压较高 ...
段文燕   +3 more
doaj  

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

中国高龄老人的心理状况及其影响因素

open access: yes, 2007
目的:分析我国高龄老人的心理状况及其影响因素。方法:依据北京大学老龄健康与家庭研究中心2002年中国老年人健康长寿调查数据库,分析高龄老人的心理状况及其影响因素。结果:大多数高龄和低龄老人(65.9%-98.9%,中位数93.1%)心理状况的评分在一般及以上,其中生活满意度的评分随增龄呈增高趋势,心理特点的评分随增龄明显下降。受教育程度高、居住在城市、主要经济来源靠自己或配偶的退休金以及住养老院的高龄老人生活满意度和心理特点的评分相对较高(平均分>3.82,F=34.19~190.88 ...
陈天勇, 李德明, 吴振云
core   +1 more source

高龄维持性血液透析患者的临床分析

open access: yesLinchuang shenzangbing zazhi, 2014
目的 评估高龄肾衰竭患者维持性血液透析(maintenance hemodialysis,MHD)的临床特点。方法 分析82例高龄肾衰竭患者(高龄组)行血液透析治疗前基线情况,包括血压、体质量指数、血红蛋白(haemoglobin,Hb)、尿素氮(BUN)、血肌酐(SCr)、血白蛋白(serum albumin,A1b);同期进行血液透析治疗的156例非高龄患者设为对照组,定期监测2组患者透析阶段一般治疗情况、透析充分性、血红蛋白(haemoglobin,Hb)、血白蛋白(serum a1bumin ...
韩志武
doaj  

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

高龄腰痛患者腰椎骨折和骨质疏松的诊断特点

open access: yesZhongguo shiyan zhenduanxue, 2013
目的分析高龄腰痛患者腰椎骨折和骨质疏松的相关性,探讨其诊断特点。方法选择200例以腰痛为主诉症状的患者,以性别与年龄作为分组依据,采用双能X线骨密度仪进行检测。结果 200例腰痛患者中,发生骨质疏松症113例,女性61.54%(96/156)远多于男性38.64%(17/44),高龄组发生比例明显多于低龄组;检出腰椎骨折椎体数28个,L1骨折71.43%(20/28)明显高于L2、L3 ...
王晓锋, 张跃辉
doaj  

Home - About - Disclaimer - Privacy