全文获取类型
收费全文 | 27444篇 |
免费 | 2870篇 |
国内免费 | 724篇 |
专业分类
耳鼻咽喉 | 275篇 |
儿科学 | 347篇 |
妇产科学 | 293篇 |
基础医学 | 2237篇 |
口腔科学 | 2561篇 |
临床医学 | 5981篇 |
内科学 | 2968篇 |
皮肤病学 | 101篇 |
神经病学 | 1797篇 |
特种医学 | 1775篇 |
外科学 | 2935篇 |
综合类 | 3939篇 |
现状与发展 | 1篇 |
一般理论 | 3篇 |
预防医学 | 2894篇 |
眼科学 | 261篇 |
药学 | 1216篇 |
256篇 | |
中国医学 | 939篇 |
肿瘤学 | 259篇 |
出版年
2024年 | 129篇 |
2023年 | 674篇 |
2022年 | 1541篇 |
2021年 | 2007篇 |
2020年 | 1717篇 |
2019年 | 1257篇 |
2018年 | 1204篇 |
2017年 | 1231篇 |
2016年 | 1080篇 |
2015年 | 1124篇 |
2014年 | 2211篇 |
2013年 | 2520篇 |
2012年 | 1666篇 |
2011年 | 1751篇 |
2010年 | 1383篇 |
2009年 | 1244篇 |
2008年 | 1201篇 |
2007年 | 1062篇 |
2006年 | 873篇 |
2005年 | 733篇 |
2004年 | 592篇 |
2003年 | 545篇 |
2002年 | 432篇 |
2001年 | 375篇 |
2000年 | 278篇 |
1999年 | 248篇 |
1998年 | 205篇 |
1997年 | 194篇 |
1996年 | 197篇 |
1995年 | 155篇 |
1994年 | 132篇 |
1993年 | 115篇 |
1992年 | 138篇 |
1991年 | 89篇 |
1990年 | 82篇 |
1989年 | 67篇 |
1988年 | 68篇 |
1987年 | 57篇 |
1986年 | 47篇 |
1985年 | 52篇 |
1984年 | 69篇 |
1983年 | 39篇 |
1982年 | 37篇 |
1981年 | 34篇 |
1980年 | 31篇 |
1979年 | 23篇 |
1978年 | 29篇 |
1977年 | 21篇 |
1976年 | 19篇 |
1975年 | 16篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
《Diabetes & Metabolic Syndrome: Clinical Research & Reviews》2022,16(10):102614
AimsTo test the Diabetes College Brazil Study feasibility, the acceptability of study interventions and their preliminary effectiveness, and describe the study protocol modifications due to the COVID-19 pandemic.MethodsSingle-center, double-blinded pilot randomized trial with two parallel groups, Exercise and Lifestyle Education (ExLE; 12-week exercise and educational interventions) and Exercise (Ex; 12-week exercise intervention only) involving patients with prediabetes or diabetes. Feasibility (eligibility, recruitment, retention, completeness of variables measures and participation rates), acceptability (satisfaction), and preliminary effectiveness of interventions (variables: functional capacity, physical activity (PA), exercise self-efficacy, diabetes knowledge, health literacy, adherence to Mediterranean food pattern, glycated hemoglobin (HbA1c), anthropometric measures, cardiac autonomic control, depression, and quality of life (QofL)).ResultsEligibility, recruitment, retention, participation in exercise sessions, and education classes rates were 17%, 93%,82%, 76%, and 71%, respectively. Missing data in the post-intervention assessment (PA, HbA1c, cardiac autonomic control, anthropometric measures, depression, and QofL) were mainly related to research procedure modifications. The interventions were highly acceptable, and most variables improved farther in the ExLE, with moderate effect sizes for PA, diabetes knowledge, health literacy, cardiac autonomic control, and QofL.ConclusionsThe Diabetes College Brazil Study is feasible, and the ExLE may benefit Brazilians living with prediabetes and diabetes. 相似文献
32.
33.
目前我国的体医融合已探索出以医院为平台的医院健康指导中心模式、以健身场所为平台的体育俱乐部健康指导模式、以社区为平台的健康监测中心模式和以体医融合健康产业为平台的产学研合作模式等4种运行模式。但总体来说我国体医融合尚处于起步阶段,优化体医融合专门人才培养模式成为体医深度融合发展的关键。研究表明,我国体医融合人才现行培养模式主要以在职培训为主,存在专门人才缺失严重、认证体系有待完善和人才培养模式单一等现实困境。同时提出加强顶层设计夯实体医融合人才培养体系,精心布局优化体医融合人才培养课程体系,强化引导完善体医融合舆论宣传体系,标准引领健全体医融合职业标准等优化路径,以期实现体医融合专门人才队伍的科学化和可持续化发展。 相似文献
34.
35.
36.
Yu-yan LI Jun-qing WU Yu-ming SHF Shang-chun WU 《生殖与避孕(英文版)》2006,17(3):158-163
Since the International Conference on Population and Development held in Cairo in 1994, and the Fourth World Conference on Women held in Beijing in 1995, the international organizations and public health communities have paid more attention to reproductiv… 相似文献
37.
采用流变学法测定了亚麻籽胶溶液的胶凝点、熔化点,并采用质构仪、扫描电镜和原子力显微镜等手段研究了影响亚麻籽胶凝胶强度的因素,结果表明亚麻籽胶具有胶凝性,它能形成一种热可逆的冷致凝胶,亚麻籽胶溶液的胶凝点低于其凝胶的熔化点,且亚麻籽胶溶液的胶凝点及其凝胶的熔化点均随冷却的起始温度的升高而升高。亚麻籽胶浓度、溶解温度、pH、NaCl、CaCl2及复合磷酸盐能影响亚麻籽胶的凝胶强度,亚麻籽胶的凝胶强度随着浓度的增加及溶解温度的升高而增强;在pH6~9的范围内,亚麻籽胶的凝胶强度达到最大;NaCl和复合磷酸盐可以降低亚麻籽胶的凝胶强度,低浓度(〈0.3%)的CaCl2可以增强亚麻籽胶的凝胶强度,而高质量分数(〉0.3%)的CaCl2能降低亚麻籽胶的凝胶强度。 相似文献
38.
Zoï Kapoula Maria Pia Bucci Frederic Jurion Julie Ayoun Farzaneh Afkhami Dominique Brémond-Gignac 《Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie》2006,245(7):931-936
Aim There is a controversy as to whether dyslexic children present visuo-motor disabilities such as vergence and accommodative
problems assessed with orthoptic tests. The purpose of this study is to re-examine this issue in a large population of children.
Methods Extensive orthoptic evaluation was made in 57 dyslexic and 46 non-dyslexic (“normal”) age-matched children. Convergence and
divergence capacities were evaluated at two distances (30 cm and 400 cm).
Results Binocular vision measured with stereo-acuity tests was normal in dyslexics. In contrast, the near point of convergence was
significantly more remote in dyslexics; most importantly, divergence at both far and near distance was significantly more
reduced in dyslexics (median value 4 pD and 10 pD, respectively, at far and near) than in “normals” (median value 6 pD and
12 pD, at far and near).
Conclusion The existence of the divergence deficit at far distance indicates the presence of deficit of divergence per se, independently
from convergence and accommodation relaxation. This result is novel and corroborated by physiological studies indicating distinct
control of convergence and divergence, both at the cortical and subcortical premotor level. We conclude that vergence deficits
are frequently present in dyslexics, and that dyslexics should be re-educated; training should address distinctively convergence
and divergence subsystems. 相似文献
39.
心房颤动(房颤)的导管消融治疗技术是近年来心血管病治疗领域最重要的进展之一[1-2].这一技术目前在国内的临床应用已越来越广泛,能够开展这一技术的医生和单位也越来越多. 相似文献
40.
Jesse M. Pines MD MBA Debra G. Perina MD William J. Brady MD 《Academic emergency medicine》2004,11(9):982-984
OBJECTIVES: To determine the type of electrocardiogram (ECG) interpretation instruction in emergency medicine (EM) residency programs, the use and perceived value of teaching modalities and resources, and the methods used to assess competency of ECG interpretation. METHODS: An interactive survey instrument was posted on the Internet using SurveySuite, Inc., software and e-mailed to program directors (PDs) of all 125 Accreditation Council for Graduate Medical Education-approved U.S. EM residency programs. Responses are reported in total numbers and percentages. RESULTS: Ninety-nine of 125 PDs completed the online survey (response rate, 79.2%). Emergency department instruction (99%), case-based lectures (98%), and didactic lectures (98%) were most commonly used to teach interpretation of ECGs, followed by computer-based instruction (34%) and ECG laboratory (12%). The majority of programs (53%) spent more than eight hours on formal ECG lectures per year, while 11% spent less than three hours. Observation during clinical time (99%), lecture time (76%), and hypothetical cases (57%) were the most common ways to determine competency in reading ECGs, while clinical observation and hypothetical cases were perceived as the most valuable. The most commonly used resource was personal or departmental ECG files (91%), and this had the highest perceived value. The majority of PDs were comfortable with residents' abilities to read ECGs by the third year (96%) and fourth year (91%) of residency. CONCLUSIONS: These data suggest that EM PDs believe that EM residency is adequately preparing graduates to interpret ECGs. This goal is achieved through a variety of methods. 相似文献