全文获取类型
收费全文 | 3492篇 |
免费 | 179篇 |
国内免费 | 36篇 |
专业分类
耳鼻咽喉 | 40篇 |
儿科学 | 96篇 |
妇产科学 | 87篇 |
基础医学 | 224篇 |
口腔科学 | 60篇 |
临床医学 | 291篇 |
内科学 | 452篇 |
皮肤病学 | 38篇 |
神经病学 | 320篇 |
特种医学 | 82篇 |
外科学 | 300篇 |
综合类 | 426篇 |
一般理论 | 1篇 |
预防医学 | 668篇 |
眼科学 | 21篇 |
药学 | 294篇 |
2篇 | |
中国医学 | 104篇 |
肿瘤学 | 201篇 |
出版年
2024年 | 4篇 |
2023年 | 77篇 |
2022年 | 149篇 |
2021年 | 167篇 |
2020年 | 153篇 |
2019年 | 163篇 |
2018年 | 171篇 |
2017年 | 127篇 |
2016年 | 166篇 |
2015年 | 127篇 |
2014年 | 305篇 |
2013年 | 256篇 |
2012年 | 229篇 |
2011年 | 252篇 |
2010年 | 228篇 |
2009年 | 162篇 |
2008年 | 165篇 |
2007年 | 155篇 |
2006年 | 103篇 |
2005年 | 82篇 |
2004年 | 55篇 |
2003年 | 60篇 |
2002年 | 38篇 |
2001年 | 32篇 |
2000年 | 29篇 |
1999年 | 21篇 |
1998年 | 27篇 |
1997年 | 14篇 |
1996年 | 13篇 |
1995年 | 17篇 |
1994年 | 20篇 |
1993年 | 6篇 |
1992年 | 12篇 |
1991年 | 11篇 |
1990年 | 7篇 |
1989年 | 8篇 |
1988年 | 8篇 |
1987年 | 4篇 |
1986年 | 3篇 |
1985年 | 10篇 |
1984年 | 9篇 |
1983年 | 9篇 |
1982年 | 5篇 |
1981年 | 10篇 |
1980年 | 8篇 |
1979年 | 7篇 |
1978年 | 6篇 |
1976年 | 5篇 |
1974年 | 2篇 |
1973年 | 6篇 |
排序方式: 共有3707条查询结果,搜索用时 234 毫秒
21.
E. Mahe 《Aesthetic plastic surgery》1998,22(1):1-8
The transconjunctival blepharoplasty is an elegant and secure technique especially in young people and helps to avoid the
hazard of a scar. In older patients, it saves them the possible sequelae such as rounding sclero show or possible ectropion
after a classical operation. Because there is no visible scar, the transconjunctival approach respects the integrity of the
functional structure of the orbital septum and the orbicular muscle, the active support of the lower eyelid. 相似文献
22.
背景 冠心病属中医“胸痹心痛”范畴,其证候分布以血瘀证最为多见,与老年人相比,中青年血瘀证的发生率更高。本研究在团队前期研究基础上进行拓展,首次运用动脉弹性和血管内皮功能检测联合载脂蛋白比值诊断中青年冠心病血瘀证,旨在为早期发现中青年冠心病血瘀证提供新思路,也可为优化补充冠心病血瘀证的诊断标准提供参考。目的 探讨踝肱指数(ABI)、肱踝动脉脉搏波速度(baPWV)、血管舒张功能(FMD)联合载脂蛋白B与载脂蛋白A-1比值(apoB/apoA-1)与中青年冠心病血瘀证的关系及其预测价值。方法 选取2016年12月至2021年12月于中日友好医院中西医结合心脏内科住院治疗的中青年(<50岁)冠心病患者,并根据《冠心病血瘀证诊断标准》分为血瘀证组和非血瘀证组。收集患者首次冠状动脉造影前的ABI、baPWV、FMD和apoB/apoA-1等临床资料。采用多因素Logistic回归分析构建中青年冠心病患者血瘀证的预测模型,并采用受试者工作特征(ROC)曲线进行预测价值评价。结果 本研究共纳入中青年冠心病患者206例,其中血瘀证组127例,非血瘀证组79例。多因素Logistic回归分析结果... 相似文献
23.
目的探讨精神科青年护士的心理健康状况。方法采用症状自评量袁对67名精神科青年护士进行调查并与中国青年常模对比分析。结果精神科青年护士的焦虑、抑郁、强迫、人际关系敏感因子分均显著高于中国青年常摸,阳性因子分≥2的捡出率最高为焦虑症状,≥3捡出率最高为强迫症状。结论精神科部分青年护士存在不同程度的心理问题,需采取相应的心理干预措施。 相似文献
24.
A distinctive glomerular lesion complicating placental site trophoblastic tumor: report of two cases 总被引:1,自引:0,他引:1
Renal disease with distinctive pathologic features developed in two young women who had placental site trophoblastic tumors. The renal abnormalities were manifested by proteinuria in both cases and by hematuria in one case; blood pressure was elevated in one of the patients. Pathologic examination of the kidneys showed distinctive glomerular abnormalities, characterized mainly by the presence of occlusive eosinophilic deposits in many of the glomerular capillary lumina, most of which stained for fibrinogen-related antigens and IgM by immunohistochemical techniques. Ultrastructural examination showed the deposits to consist mainly of granular material that contained packets of fibrillar material with the appearance of fibrin. The uterine tumors were composed of mononucleated and multinucleated cells with abundant cytoplasm that infiltrated between the muscle bundles of the myometrium; in both tumors there was prominent deposition of eosinophilic material that had the tinctorial properties of fibrin and that stained for fibrinogen and IgM in immunoperoxidase studies. The renal abnormalities disappeared after hysterectomy in one case; the other patient, who was receiving chemotherapy and had disseminated intravascular coagulation, died with leukopenia and sepsis. The clinical and pathologic features in these cases suggest that the renal abnormalities were related to the uterine tumors and that the production of immune complexes and/or the activation of intravascular coagulation by the tumors were pathogenetic mechanisms. 相似文献
25.
26.
老年与中青年癌症病人心理健康状况比较研究 总被引:2,自引:0,他引:2
癌症是一种心身疾病 ,心理社会因素在癌症的发生、发展及预后中均起着重要作用。反过来 ,癌症对病人来说又是一种恶性刺激 ,会给病人带来沉重的心理负担 ,影响疾病的康复和生活质量 ,并可加速癌症的恶性进展 ,造成不良后果。有研究表明 ,老年与中青年癌症病人因社会地位、社会经验及社会责任的不同而各具特点[1] 。了解不同年龄癌症病人的心理状况 ,并采取相应的处理策略 ,对癌症的治疗和康复具有积极作用。我们对 1999年 7月~ 2 0 0 0年 8月收治的 12 6例老年和 96例中青年癌症病人的心理健康状况进行了对比分析 ,结果总结如下。1 材料和… 相似文献
27.
住院网络成瘾青少年的父母养育方式与人格特征 总被引:4,自引:0,他引:4
目的探讨住院网络成瘾(Internet Addiction Disorder,IAD)青少年的父母养育方式及人格特征。方法采用网络成瘾临床诊断标准、艾森克人格问卷(EPQ),父母养育方式评定量表(EMBU),对596名被诊断为IAD的青少年施测,比较住院IAD者与对照组的差异。结果IAD青少年父亲情感温暖(FF1)分值低于对照组,过分干涉(FF3)、拒绝否认(FF5)分值高于对照组。IAD青少年的母亲情感温暖(MF1)分值亦低于对照组,而过分干涉保护(MF2)、拒绝否认(MF3)及惩罚严厉(MF4)因子均高于对照组(P<0.01)。IAD青少年的内外向(E)因子分明显低于对照组(P<0.01)、精神质(P)因子分高于对照组(P<0.05)。结论住院IAD青少年存在不良的家庭教养方式,同时存在人格问题。 相似文献
28.
目的探讨基于微信平台的健康教育对中青年居家腹膜透析患者负性情绪和自我管理能力的影响。方法选取2018年9月至2020年7月我院收治的中青年居家腹膜透析患者74例,随机分为实验组和对照组各37例。对照组采用常规健康教育,实验组采用基于微信平台的健康教育。比较两组患者干预前后的负性情绪和自我管理能力。结果干预前,两组的SDS、SAS、ESCA评分比较差异无统计学意义(P>0.05);干预后,实验组的SDS、SAS评分低于对照组,ESCA评分高于对照组(P<0.05)。结论基于微信平台的健康教育可有效改善中青年居家腹膜透析患者的焦虑、抑郁等负性情绪,显著提升其自我管理能力。 相似文献
29.
《Disability and health journal》2021,14(4):101122
BackgroundDisability faced by a young person can impact the school-to-work transition and shape health and well-being over the life course. Unique barriers to entry and advancement within the labor market that are relevant to young people with disabilities underscore the need for tailored policy-level supports.ObjectivesTo examine and describe policies that support the school-to-work transition of young people with disabilities in Canada.MethodsA scan of policies which focused on the school-to-work transition of young people with disabilities across Canada was conducted between June 2019 and January 2020. Searches were completed within federal, provincial and territorial policy portals. Each policy relating to employment participation of people with disabilities was summarized. Policies that focused on the school-to-work-specific were synthesized using Bemelmans-Vidic, Rist and Vedung's policy tool framework.ResultsA total of 36 policies were identified by our scan that focused on the employment of people with disabilities. Only five policies explicitly addressed the school-to-work transition. All existing policies were implemented at the provincial level and aimed to promote entry into employment. The synthesis of policies revealed that financial policy tools were primarily used to incentivize employment, provision of workplace accommodations, or the development and implementation of job readiness programs.ConclusionOur analysis of federal, provincial and territorial policies in Canada uncovered a limited number of policies that specifically support the school-to-work transition. Addressing these policy gaps can increase the inclusion of young people with disabilities in the labor market. 相似文献
30.
PurposeIt is well known that pubertal timing affects adolescents' externalizing behaviors, but it is unknown if this effect lasts into adulthood. This study assessed if and when the early maturation effect wanes, specifically in two domains of externalizing behaviors: nonviolent and violent behaviors.MethodsUsing data from the National Longitudinal Study of Adolescent to Adult Health (Add Health) that include age-appropriate items of violent and nonviolent behaviors assessed from ages 11–30 over four waves (N = 4,255), we conducted a series of longitudinal growth curve analyses to evaluate the effect of pubertal timing on the trajectories of nonviolent and violent externalizing behaviors for males and females.ResultsCompared to later maturing male peers, early maturing males reported significantly elevated overall externalizing, nonviolent, and violent behaviors throughout adolescence, but became indistinguishable from on-time and late-maturing counterparts in young adulthood. Similarly, early maturing females showed higher levels of overall externalizing and nonviolent behaviors than later maturing counterparts, but no effect of pubertal timing was seen on the trajectories of violent behaviors. However, early maturing females' overall externalizing and nonviolent behaviors also became indistinguishable from on-time and late-maturing females after adolescence.ConclusionsThese findings clarify the differential effect of early maturation on nonviolent and violent behaviors, especially in females, and highlight the short-lived nature of the effects of early pubertal timing. 相似文献