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全球钙化性主动脉瓣疾病负担的性别和年龄别差异研究 [PDF]

open access: yes浙江大学学报. 医学版
目的基于全球疾病负担(GBD)2021研究数据,分析1990—2021年全球钙化性主动脉瓣疾病(CAVD)负担的性别和年龄别差异。方法从健康指标与评估研究所官方网站获取GBD 1990—2021年CAVD相关数据,分析患病率、死亡率、伤残损失生命年(YLD)和伤残调整生命年(DALY)等指标在不同性别和年龄组的分布特征及变化趋势。采用Joinpoint回归分析计算年变化百分比(APC)和平均年变化百分比(AAPC)。结果2021年全球CAVD患者达1332万例,导致14.2万例死亡。年龄标化患病率男性 ...
邓 湘宁   +7 more
doaj   +2 more sources

大熊猫血液微量元素、血常规及生理生化指标测定及分析

open access: yes野生动物学报, 2021
本研究系统地检测了大熊猫血液微量元素、血常规及生理生化指标。研究发现,微量元素中镁元素的含量在不同年龄段间呈现差异。通过性别和年龄变量进一步两两比较发现,镁、锌、铁元素差异显著。血液生理生化结果显示大熊猫生理生化指标ALT、ALP两项参数在亚成年、成年及老年不同年龄段间差异显著 ...
曾敏 1   +1 more
doaj  

东天山梅岭铜矿床黄铁矿Re-Os等时线年龄:Os同位素不均一的结果

open access: yes, 2018
金属硫化物Re-Os等时线年龄的合理解释是揭示金属矿床成矿时代的关键.通过对新疆东天山梅岭铜矿床开展Re-Os同位素定年研究,结果表明浸染状和脉状矿石中黄铁矿样品在Os浓度和Os同位素比值方面都有很大的变化,这两类样品定义了很好的Re-Os等时线年龄,分别为523±59 Ma和707±99 Ma.由于得到的等时线年龄明显老于它们的实际地质成矿年龄,且 187 Os/ 188 Os与普通Os的倒数(以1/ 192 Os为例)之间存在着很好的相关性( R 2 分别为0.997 3和0.994 5 ...
Bing-Shuang Zhao   +7 more
semanticscholar   +1 more source

数字年龄歧视——人工智能给老年人带来的挑战和机遇

open access: yes人文与社会科学学刊
人工智能(AI)和机器学习正在重塑医疗、教育、就业、金融和法律等领域。然而,AI系统的开发数据往往包含社会显性和隐性偏见,其预测模型可能加剧社会不平等和权力失衡等问题。当前,关于AI如何延续种族、性别和阶级歧视的讨论已成主流,但对其年龄歧视的研究相对不足。面对全球老龄化与AI技术的快速发展,亟需审视AI系统中的年龄偏见。本文重点探讨AI年龄歧视现象,提出一个概念模型,并分析相关伦理和法律影响,分析数字世界的不公正循环如何助长AI年龄歧视。最后,本研究指出未来数字年龄歧视的研究方向,以完善该领域的知识体系。
Jing Wu, Xiao-Yan Liu
semanticscholar   +1 more source

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

中国和英国中老年人群缺血性卒中发病及疾病负担趋势与预测分析Trends and Predictions of Ischemic Stroke Incidence and Disease Burden among Middle-Aged and Older Adults in China and the United Kingdom

open access: yesZhongguo cuzhong zazhi
目的 评估并预测中国和英国中老年人群缺血性卒中(ischemic stroke,IS)的发病及伤残调整生命年(disability-adjusted life years,DALYs)趋势,为处于不同发展阶段的国家制订IS预防政策提供证据参考。 方法 数据来源于2021年全球疾病负担数据库,提取中国和英国40岁及以上中老年人群IS的发病人数、DALYs及其粗率。采用年估计变化百分比(estimated annual percentage change,EAPC)分析时间变化趋势,运用年龄-时期 ...
王锦华,林思含,陈淑祺,郑慧妍,杨会文,林艳伟WANG Jinhua, LIN Sihan, CHEN Shuqi, ZHENG Huiyan, YANG Huiwen, LIN Yanwei
doaj   +1 more source

Radiographic identification and description of the equine middle conchal sinus (ethmoidal sinus): Implications for diagnosing middle conchal sinusitis

open access: yesEquine Veterinary Journal, EarlyView.
Abstract Background The middle conchal sinus (MCS) (ethmoidal sinus) remains one of the least understood equine paranasal compartments. Despite recognition of its involvement in sinonasal disease, disorders of the MCS often remain underdiagnosed in the absence of computed tomographic (CT) imaging due to limited anatomical understanding and challenges ...
J.‐B. Pavard   +3 more
wiley   +1 more source

Generative AI as a Learning Companion for Self‐Directed Second Language Learning Among Secondary School Students: A Mixed‐Methods Study

open access: yesInternational Journal of Applied Linguistics, EarlyView.
ABSTRACT Self‐directed Learning (SDL) is an important skill for learners of all ages and phases of life. Generative AI facilitates self‐directed second language (L2) learning by providing interactive, personalised access to online resources. However, existing research on AI‐assisted self‐directed L2 learning focuses on adult learners in higher ...
Qing Ma   +4 more
wiley   +1 more source

First, He Was Adam, and Then, She Was Eve

open access: yesSexuality, Gender &Policy, Volume 9, Issue 4, November 2026.
ABSTRACT Trans* is an umbrella term that is used to describe people who identify with a gender that is different from their assigned sex at birth. There has been a marked increase in young people presenting to child and adolescent mental health services due to a lack of specialist gender clinics in the United Kingdom.
Corey Hartley   +2 more
wiley   +1 more source

RAPD and ISSR analysis on genetic diversity of different life stages in the population of Torreya jackii, an endangered plant in China(濒危植物长叶榧群体不同年龄级遗传多样性的RAPD和ISSR分析)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2010
按胸径将浙江省桐庐县白云源森林公园长叶榧群体划分为成体、小树、幼苗3个年龄级,利用RAPD和ISSR分子标记对不同年龄级的遗传多样性及遗传分化进行分析.12个RAPD引物和12个ISSR引物分别扩增出199和180个条带,总多态位点百分率分别为44.72%和56.11%. RAPD和ISSR分析均显示3个年龄级的多态位点百分率、Shannon信息指数、Nei指数以成体最高,小树次之,幼苗最低,表明长叶榧群体遗传变异呈衰退趋势.分子方差分析(AMOVA)表明长叶榧群体不同年龄级内、年龄级间均存在遗传变异 ...
LIJian-hui(李建辉)   +2 more
doaj   +1 more source

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