全文获取类型
收费全文 | 421233篇 |
免费 | 30210篇 |
国内免费 | 9282篇 |
专业分类
耳鼻咽喉 | 4715篇 |
儿科学 | 10559篇 |
妇产科学 | 7150篇 |
基础医学 | 32983篇 |
口腔科学 | 9347篇 |
临床医学 | 52436篇 |
内科学 | 51502篇 |
皮肤病学 | 5109篇 |
神经病学 | 28565篇 |
特种医学 | 30213篇 |
外国民族医学 | 49篇 |
外科学 | 42308篇 |
综合类 | 58369篇 |
现状与发展 | 15篇 |
一般理论 | 29篇 |
预防医学 | 36390篇 |
眼科学 | 10267篇 |
药学 | 32521篇 |
434篇 | |
中国医学 | 30899篇 |
肿瘤学 | 16865篇 |
出版年
2024年 | 1428篇 |
2023年 | 6920篇 |
2022年 | 12650篇 |
2021年 | 17027篇 |
2020年 | 15758篇 |
2019年 | 21190篇 |
2018年 | 18865篇 |
2017年 | 16165篇 |
2016年 | 13871篇 |
2015年 | 13151篇 |
2014年 | 25495篇 |
2013年 | 26314篇 |
2012年 | 22926篇 |
2011年 | 24784篇 |
2010年 | 20071篇 |
2009年 | 18840篇 |
2008年 | 18465篇 |
2007年 | 18713篇 |
2006年 | 16367篇 |
2005年 | 14222篇 |
2004年 | 11678篇 |
2003年 | 10019篇 |
2002年 | 7865篇 |
2001年 | 7120篇 |
2000年 | 5902篇 |
1999年 | 5078篇 |
1998年 | 4289篇 |
1997年 | 4064篇 |
1996年 | 3504篇 |
1995年 | 3287篇 |
1994年 | 3087篇 |
1993年 | 2474篇 |
1992年 | 2410篇 |
1991年 | 2034篇 |
1990年 | 1765篇 |
1989年 | 1542篇 |
1988年 | 1454篇 |
1985年 | 3891篇 |
1984年 | 4888篇 |
1983年 | 3414篇 |
1982年 | 3878篇 |
1981年 | 3607篇 |
1980年 | 3214篇 |
1979年 | 2943篇 |
1978年 | 2573篇 |
1977年 | 1922篇 |
1976年 | 2167篇 |
1975年 | 1633篇 |
1974年 | 1441篇 |
1973年 | 1281篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
32.
33.
Xiaoxuan Liu Ameenat L. Solebo Livia Faes Sophie Beese Tasanee Braithwaite Matthew E. Round 《Ocular immunology and inflammation》2020,28(6):898-907
ABSTRACT
Purpose
New instrument-based techniques for anterior chamber (AC) cell counting can offer automation and objectivity above clinician assessment. This review aims to identify such instruments and its correlation with clinician estimates. 相似文献34.
《Revista espa?ola de cardiología》2019,72(12):1012-1019
Introduction and objectivesThe Spanish Society of Cardiology/Spanish Heart Foundation (SEC/FEC) annually awards grants for cardiovascular research projects. Our objective was to analyze the trend in these investments and their resulting scientific production from 2007 to 2012.MethodsA search of the publications funded by the SEC/FEC was carried out, according to the following inclusion criteria: publication in a journal indexed in MEDLINE or EMBASE, publication date after the grant, authorship by the principal investigator of the grant, and acknowledgment of SEC/FEC funding. The impact factor and subsequent citations of the articles were analyzed (Web of Science).ResultsA total of 235 grants were awarded (39/y) with an allocation of €3 854 300 (€642 383/y), 37% of them to women. In all, 122 publications resulted from 88 research projects (37%) funded by the SEC/FEC. Up to October 2017, these publications had received 2258 citations in subsequent studies in the Web of Science, with a mean of 18.5 and a median of 8 citations/study.ConclusionsDespite the economic crisis, the mean number and size of the grants awarded by the SEC/FEC increased in the period analyzed. Grants were awarded on an equal opportunity basis to men and women. The bibliometric impact of the funded projects is acceptable, although efforts should be made to improve it. 相似文献
35.
Objective
To explore from a gender perspective the association with subjective health of the interaction between education and household arrangements within the framework of social determinants of health placed at the micro and mezzo levels.Methods
The data comes from the Spanish sample of the European Union Statistics on Income and Living Conditions for 2014. Independent logistic regression models for men and women were run to analyze the association with subjective health of the interaction between education and household arrangements. An additive model was run to assess possible advantages over the interaction approach.Results
The interaction models show a lower or even no significant effect on health of household arrangements usually negatively associated with health among individuals with high education, displaying specific patterns according to sex.Conclusions
Health profiles of women and men are more precisely drawn if both social determinants of health are combined. Among the women, the important role was confirmed of both social determinants of health in understanding their health inequalities. Among the men, mainly those with low educational achievement, the interaction revealed that the household was a more meaningful social determinant of health. This could enable the definition of more efficient public policies to reduce health and gender inequalities. 相似文献36.
高血压病为临床最常见的慢性病,余尚贞根据多年临床经验辨证,结合开、阖、枢理论,以太阴阳明升降不和为病机,从太阴阳明入手论治高血压病,结合五运六气选方六戊年麦门冬汤,临床治疗多例,疗效甚佳。开、阖、枢理论源于内经,是对人体三阴三阳经生理功能、病理特点及其相互关系的概括,我们可从中窥得开、阖、枢理论之部分面貌,比如对太阴、阳明经的了解,并拓展中医在治疗高血压病方面的治疗思路。 相似文献
37.
《Clinical neurophysiology》2020,131(1):213-224
ObjectiveSystematically review the abnormalities in event related potential (ERP) recorded in Rett Syndrome (RTT) patients and animals in search of translational biomarkers of deficits related to the particular neurophysiological processes of known genetic origin (MECP2 mutations).MethodsPubmed, ISI Web of Knowledge and BIORXIV were searched for the relevant articles according to PRISMA standards.ResultsERP components are generally delayed across all sensory modalities both in RTT patients and its animal model, while findings on ERPs amplitude strongly depend on stimulus properties and presentation rate. Studies on RTT animal models uncovered the abnormalities in the excitatory and inhibitory transmission as critical mechanisms underlying the ERPs changes, but showed that even similar ERP alterations in auditory and visual domains have a diverse neural basis. A range of novel approaches has been developed in animal studies bringing along the meaningful neurophysiological interpretation of ERP measures in RTT patients.ConclusionsWhile there is a clear evidence for sensory ERPs abnormalities in RTT, to further advance the field there is a need in a large-scale ERP studies with the functionally-relevant experimental paradigms.SignificanceThe review provides insights into domain-specific neural basis of the ERP abnormalities and promotes clinical application of the ERP measures as the non-invasive functional biomarkers of RTT pathophysiology. 相似文献
38.
Eitaro Ito Akihiro Takai Yoshinori Imai Hiromi Otani Yoshihiro Onishi Yosuke Yamamoto Kohei Ogawa Taiji Tohyama Shunichi Fukuhara Yasutsugu Takada 《Surgery》2019,165(2):353-359
Background
Controversy continues as to whether single-incision laparoscopic cholecystectomy, with the somewhat larger incision at the umbilicus, may lead to a worse postoperative quality of life and more pain compared with the more classic 4-port laparoscopic cholecystectomy. The aim of this study was to compare single-incision and 4-port laparoscopic cholecystectomy from the perspective of quality of life.Methods
This study was a multicenter, parallel-group, open-label, randomized clinical trial. A total of 120 patients who were scheduled to undergo elective cholecystectomy were randomly assigned 1:1 into the single-incision laparoscopic cholecystectomy or the 4-port laparoscopic cholecystectomy group and then assessed continuously for 2 weeks during the postoperative period. The primary outcome was quality of life, defined as the time to resume normal daily activities. Postoperative pain was also assessed. To explore the heterogeneity of treatment effects, we assessed the interactions of sex, age, and working status on recovery time.Results
A total of 58 patients in the single-incision group and 53 in the 4-port group (n?=?111, 47 male, mean age 57 years) were analyzed. The mean time to resume daily activities was 10.2 days and 8.8 days, respectively, for single-incision and 4-port laparoscopic cholecystectomy (95% confidence interval –0.4 to 3.2, P?=?.12). Similarly, the time to relief from postoperative pain did not differ significantly between the groups. Statistically insignificant but qualitative interactions were noted; in the subgroups of women, full-time workers, and patients younger than 60 years, recovery tended to be slower after single-incision laparoscopic cholecystectomy.Conclusion
Postoperative quality of life did not differ substantially between single-incision laparoscopic cholecystectomy and 4-port laparoscopic cholecystectomy. Patients younger than 60 years, women, and full-time workers tended to have a somewhat slower recovery after single-incision laparoscopic cholecystectomy. 相似文献39.
《Journal of Clinical Orthopaedics and Trauma》2019,10(2):380-386
Additive manufacturing is a rapidly emerging technology which is being successfully implemented in the various field of medicine as well as in orthopaedics, where it has applications in reducing cartilage defects and treatments of bones. The technology helps through systematic collection of information about the shape of the "defects" and precise fabrication of complex 3D constructs such as cartilage, heart valve, trachea, myocardial bone tissue and blood vessels. In this paper, a large number of the relevant research papers on the additive manufacturing and its application in medical specifically orthopaedics are identified through Scopus had been studied using Bibliometric analysis and application analysis is undertaken. The bibliometric analysis shows that there is an increasing trend in the research reports on additive manufacturing applications in the field of orthopaedics. Discussions are on using technological advancement like scanning techniques and various challenges of the orthopaedic being met by additive manufacturing technology. For patient-specific orthopaedic applications, these techniques incorporate clinical practice and use for effective planning. 3D printed models printed by this technology are accepted for orthopaedic surgery such as revision of lumbar discectomy, pelvic surgery and large scapular osteochondroma. The applications of additive manufacturing in orthopaedics will experience a rapid translation in future. An orthopaedic surgeon can convert need/idea into a reality by using computer-aided design (CAD) software, analysis software to facilitate the manufacturing. Thus, AM provides a comprehensive opportunity to manufacture orthopaedic implantable medical devices. 相似文献
40.