全文获取类型
收费全文 | 20477篇 |
免费 | 2419篇 |
国内免费 | 565篇 |
专业分类
耳鼻咽喉 | 386篇 |
儿科学 | 306篇 |
妇产科学 | 263篇 |
基础医学 | 1689篇 |
口腔科学 | 401篇 |
临床医学 | 5337篇 |
内科学 | 1649篇 |
皮肤病学 | 88篇 |
神经病学 | 1519篇 |
特种医学 | 1296篇 |
外科学 | 2063篇 |
综合类 | 3489篇 |
现状与发展 | 1篇 |
一般理论 | 3篇 |
预防医学 | 2434篇 |
眼科学 | 233篇 |
药学 | 959篇 |
256篇 | |
中国医学 | 849篇 |
肿瘤学 | 240篇 |
出版年
2024年 | 102篇 |
2023年 | 543篇 |
2022年 | 904篇 |
2021年 | 1318篇 |
2020年 | 1367篇 |
2019年 | 981篇 |
2018年 | 914篇 |
2017年 | 1023篇 |
2016年 | 903篇 |
2015年 | 852篇 |
2014年 | 1778篇 |
2013年 | 2031篇 |
2012年 | 1371篇 |
2011年 | 1334篇 |
2010年 | 1077篇 |
2009年 | 950篇 |
2008年 | 881篇 |
2007年 | 805篇 |
2006年 | 663篇 |
2005年 | 556篇 |
2004年 | 444篇 |
2003年 | 394篇 |
2002年 | 313篇 |
2001年 | 253篇 |
2000年 | 212篇 |
1999年 | 149篇 |
1998年 | 143篇 |
1997年 | 128篇 |
1996年 | 134篇 |
1995年 | 105篇 |
1994年 | 86篇 |
1993年 | 79篇 |
1992年 | 98篇 |
1991年 | 59篇 |
1990年 | 56篇 |
1989年 | 40篇 |
1988年 | 46篇 |
1987年 | 43篇 |
1986年 | 32篇 |
1985年 | 34篇 |
1984年 | 48篇 |
1983年 | 30篇 |
1982年 | 24篇 |
1981年 | 26篇 |
1980年 | 23篇 |
1979年 | 18篇 |
1978年 | 19篇 |
1977年 | 17篇 |
1975年 | 13篇 |
1971年 | 11篇 |
排序方式: 共有10000条查询结果,搜索用时 218 毫秒
101.
Charlotte A. Hazel 《Clinical & experimental optometry》1995,78(3):98-105
For years it has been recognised that many sports place demands on vision and particular visual skills. There is much evidence to show that the correction of visual dysfunction such as ametropia and binocular and accommodative anomalies results in improved sporting performance for those sports. More controversial and of special interest is the suggestion that it is possible to train visual abilities of subjects who do not present with traditionally recognised functional disorders of vision. It has been proposed that sporting performance can be improved as a result of this training. However, this review found the evidence to be inconclusive. In addition, there are studies that suggest athletes have better visual abilities than non-athletes and good athletes have better abilities than less skilled athletes. However, it has not been determined whether these superior abilities are innate to the athlete or have developed through practice. A review of the available literature was unable to prove (or disprove) either of these proposals. However, there appears to be enough evidence to warrant further investigation of these questions, in order that the area of sports vision and vision training can be more fully understood. This will enable clinicians to take full advantage of the potential of sports vision practice to assist athletes. (Clin Exp Optom 1995; 78: 3: 98–105) 相似文献
102.
103.
Cherri Hobgood MD Susan Sawning MSW Josie Bowen MD Katherine Savage MA 《Academic emergency medicine》2006,13(12):1288-1295
The disparities in health care and health outcomes between the majority population and cultural and racial minorities in the United States are a problem that likely is influenced by the lack of culturally competent care. Emergency medicine and other primary-care specialties remain on the front lines of this struggle because of the nature of their open-door practice. To provide culturally appropriate care, health care providers must recognize the factors impeding cultural awareness, seek to understand the biases and traditions in medical education potentially fueling this phenomenon, and create a health care community that is open to individuals' otherness, thus leading to better communication of ideas and information between patients and their health care providers. This article highlights the rationale for and current problems in teaching cultural competency and examines several different models implemented to teach and promote cultural competency along the continuum of emergency medicine learners. However, the literature addressing the true efficacy of such programs in leading to long-lasting change and improvement in minority patients' clinical outcomes remains insufficient. 相似文献
104.
M. KROTKIEWSKI L. SJ
STR
M L. SULLIVAN P.-A. LUNDBERG G. LINDSTEDT H. WETTERQVIST P. BJ
RNTORP 《Journal of internal medicine》1984,216(3):269-275
Abstract Thyroid hormones were measured before, during and after acute exercise (60 min) or physical training (3 months) in obese women. Thyroid stimulating hormone concentration increased during acute work and decreased immediately after. No changes were seen during the two following days. An increase was seen after ten days as well as after three months of physical training. Thyroxine concentrations showed no changes. 3,5,3′-Triiodothyronine decreased slightly immediately after acute exercise, and after three months of physical training, 3,3′,5′-triiodothyronine (reverse triiodothyronine) increased slowly during and after acute exercise. A negative correlation was found between changes in fasting insulin and thyroxine and a positive correlation between changes in blood pressure and triiodothyronine after training. Lack of agreement in previous reports is probably due to methodological differences such as methods more or less susceptible to fatty acid interference, and thyroid hormones changing differently during acute work and before and after physical training. The duration of the study may also be of importance, even 3 months possibly being too short for attaining equilibrium in thyroid homeostasis. 相似文献
105.
目的研究心理训练对高特质焦虑新兵考核时生理指标和成绩的影响。方法采用个人评价问卷(PEI)、状态.特质焦虑问卷(STAI)和简易应对方式问卷对参加考核的新兵实施团体测试。将被试者分为对照组、低特质焦虑组、高特质焦虑组和干预组,对干预组进行自我评价、潜能开发、团队精神强化、应对方式的心理训练。测试考核前后生理指标差值及考核成绩的变化。结果干预组新兵军事考核前后收缩压、舒张压和脉搏三项生理差值与考核成绩明显优于高特质焦虑组(P〈0.05)。结论系统的心理训练可有效改善新兵对应激情景的生理和心理反应,提高作业绩效。 相似文献
106.
越野训练致热射病并发多器官功能不全救治分析 总被引:5,自引:1,他引:4
目的 探讨越野训练致劳累性热射病并发多器官功能不全的有效临床救治方法.方法 收集5例越野训练致热射病病人的临床资料,总结临床表现、病程中实验室监测指标变化与临床干预治疗的关系,以及对预后的影响.结果 1例病人由于入院较晚,发生严重的DIC和多脏器功能衰竭而死亡;其余4例病人肌酸激酶、肌红蛋白多在住院4~5天后逐渐下降,住院15~60天均痊愈出院,无后遗症.结论 治疗该病要做到五早:早降温、早扩容、早抗凝、早血液净化、早镇静. 相似文献
107.
A prospective and controlled study of training after surgery for lumbar disc herniation (LDH). The objective was to determine
the effect of early neuromuscular customized training after LDH surgery. No consensus exists on the type and timing of physical
rehabilitation after LDH surgery. Patients aged 15–50 years, disc prolapse at L4–L5 or L5–S1. Before surgery, at 6 weeks,
4, and 12 months postoperatively, the following evaluations were performed: low back pain and leg pain estimated on a visual
analog scale, disability according to the Roland–Morris questionnaire (RMQ) and disability rating index (DRI). Clinical examination,
including the SLR test, was performed using a single blind method. Consumption of analgesics was registered. Twenty-five patients
started neuromuscular customized training 2 weeks after surgery (early training group=ETG). Thirty-one patients formed a control
group (CG) and started traditional training after 6 weeks. There was no significant difference in pain and disability between
the two training groups before surgery. Median preoperative leg pain was 63 mm in ETG and 70 mm in the CG. Preoperative median
disability according to RMQ was 14 in the ETG and 14.5 in the CG. Disability according to DRI (33/56 patients) was 5.3 in
the ETG vs. 4.6 in the CG. At 6 weeks, 4 months, and 12 months, pain was significantly reduced in both groups, to the same
extent. Disability scores were lower in the ETG at all follow-ups, and after 12 months, the difference was significant (RMQ
P=.034, DRI P=.015). The results of the present study show early neuromuscular customized training to have a superior effect on disability,
with a significant difference compared to traditional training at a follow-up 12 months after surgery. No adverse effects
of the early training were seen. A prospective, randomized study with a larger patient sample is warranted to ultimately demonstrate
that early training as described is beneficial for patients undergoing LDH surgery. 相似文献
108.
109.
Motor loss and swallowing difficulty after stroke: frequency, recovery, and prognosis. 总被引:8,自引:0,他引:8
Data relating to motor loss and swallowing difficulties in a community sample of 976 patients who suffered an acute stroke have been analysed. About 17% of patients seen within one week had no paralysis; at 6 months 48% of survivors had no paralysis and 9% had severe paralysis. The Motricity Index used to study motor loss related to functional loss and walking ability; it seems to be a simple valid measure of motor loss. Severe paralysis was associated with a high fatality rate, and only 6%-10% of survivors of an initially severe paralysis made a full recovery by 6 months. If severe persisted at 3 weeks, full recovery was not observed. Loss of sitting balance was associated with a poor outcome. Of conscious patients seen within one week, 14% choked on attempting to swallow and a further 28% had abnormal swallowing: this 42% of patients had a high fatality rate. 相似文献
110.
Sisko Salo-Chydenius 《Occupational therapy international》1996,3(3):174-189
The primary purpose of this study was to apply an occupational therapy programme for social skills training based on a cognitive-behavioural frame of reference to individuals with long-term mental illness. The goal of the social skills training group was to enable patients to develop verbal and non-verbal communication skills that could be generalised to everyday interpersonal encounters. A case example of the application of social skills training with a 38-year-old single male with a diagnosis of paranoid schizophrenia is described. The Group-Interaction Skills Survey developed by the author served as an outcome measure. Qualitative data confirmed the researcher's hypothesis that individuals with long-term mental illness can benefit from social skills training using a combination of role-playing, sociodrama, videotape recordings and creative media. Copyright © 1996 Whurr Publishers Ltd. 相似文献