全文获取类型
收费全文 | 130465篇 |
免费 | 9679篇 |
国内免费 | 3611篇 |
专业分类
耳鼻咽喉 | 1020篇 |
儿科学 | 2337篇 |
妇产科学 | 1796篇 |
基础医学 | 7161篇 |
口腔科学 | 2896篇 |
临床医学 | 15518篇 |
内科学 | 19048篇 |
皮肤病学 | 2391篇 |
神经病学 | 6501篇 |
特种医学 | 4145篇 |
外国民族医学 | 39篇 |
外科学 | 12471篇 |
综合类 | 18588篇 |
现状与发展 | 23篇 |
一般理论 | 2篇 |
预防医学 | 8762篇 |
眼科学 | 2052篇 |
药学 | 10373篇 |
77篇 | |
中国医学 | 11030篇 |
肿瘤学 | 17525篇 |
出版年
2024年 | 311篇 |
2023年 | 2291篇 |
2022年 | 4202篇 |
2021年 | 5649篇 |
2020年 | 5338篇 |
2019年 | 4755篇 |
2018年 | 4517篇 |
2017年 | 4943篇 |
2016年 | 5243篇 |
2015年 | 5077篇 |
2014年 | 9406篇 |
2013年 | 11767篇 |
2012年 | 7822篇 |
2011年 | 8292篇 |
2010年 | 6823篇 |
2009年 | 6254篇 |
2008年 | 6093篇 |
2007年 | 6474篇 |
2006年 | 5784篇 |
2005年 | 5087篇 |
2004年 | 4127篇 |
2003年 | 3708篇 |
2002年 | 3035篇 |
2001年 | 2676篇 |
2000年 | 2236篇 |
1999年 | 1746篇 |
1998年 | 1461篇 |
1997年 | 1227篇 |
1996年 | 1019篇 |
1995年 | 921篇 |
1994年 | 727篇 |
1993年 | 559篇 |
1992年 | 509篇 |
1991年 | 460篇 |
1990年 | 391篇 |
1989年 | 345篇 |
1988年 | 347篇 |
1987年 | 294篇 |
1986年 | 241篇 |
1985年 | 274篇 |
1984年 | 244篇 |
1983年 | 185篇 |
1982年 | 183篇 |
1981年 | 173篇 |
1980年 | 144篇 |
1979年 | 122篇 |
1978年 | 73篇 |
1977年 | 48篇 |
1976年 | 54篇 |
1975年 | 35篇 |
排序方式: 共有10000条查询结果,搜索用时 13 毫秒
81.
82.
Joan M. Farrell Ida A. Shaw 《Journal of behavior therapy and experimental psychiatry》2009,40(2):317-328
This study tests the effectiveness of adding an eight-month, thirty-session schema-focused therapy (SFT) group to treatment-as-usual (TAU) individual psychotherapy for borderline personality disorder (BPD). Patients (N = 32) were randomly assigned to SFT-TAU and TAU alone. Dropout was 0% SFT, 25% TAU. Significant reductions in BPD symptoms and global severity of psychiatric symptoms, and improved global functioning with large treatment effect sizes were found in the SFT-TAU group. At the end of treatment, 94% of SFT-TAU compared to 16% of TAU no longer met BPD diagnosis criteria (p < .001). This study supports group SFT as an effective treatment for BPD that leads to recovery and improved overall functioning. 相似文献
83.
Workplace status and risk of hypertension among hourly and salaried aluminum manufacturing employees
Jane Ellen Clougherty Ellen A. Eisen Martin D. Slade Ichiro Kawachi Mark R. Cullen 《Social science & medicine (1982)》2009
An inverse relationship between workplace status and morbidity is well established; higher job status has been associated with reduced risks of heart disease, hypertension, and injury. Most research on job status, however, has focused on salaried populations, and it remains unclear whether job status operates similarly among hourly workers. Our objectives were to examine whether hourly status itself influences risk of hypertension after adjustment for socioeconomic confounders, and to explore the role of fine-scale job grade on hypertension incidence within hourly and salaried groups. We examined data for 14,999 aluminum manufacturing employees in 11 plants across the U.S., using logistic regression with adjustment for age, sex, race/ethnicity and other individual characteristics. Propensity score restriction was used to identify comparable groups of hourly and salaried employees, reducing confounding by sociodemographic characteristics. Job grade (coded 1 through 30, within hourly and salaried groups) was examined as a more refined measure of job status. Hourly status was associated with an increased risk of hypertension, after propensity restriction and adjustment for confounders. The observed effect of hourly status was stronger among women, although the propensity-restricted cohort was disproportionately male (96%). Among salaried workers, higher job grade was not consistently associated with decreased risk; among hourly employees, however, there was a significant trend, with higher job grades more protective against hypertension. Increasing the stringency of hypertension case criteria also increased the risk of severe or persistent hypertension for hourly employees. 相似文献
84.
85.
老年人隐裂牙综合治疗的临床分析 总被引:3,自引:0,他引:3
目的:评价老年人隐裂牙综合治疗的临床效果。方法:对114例隐裂牙进行综合治疗,1年后随访观察。结果:114颗隐裂牙中,根管治疗全冠修复的有效率为92.86%,充填治疗组有效率为87.5%。结论:综合治疗可以保留牙体组织并恢复咬合力,是老年人隐裂牙治疗较理想的方法。 相似文献
86.
心血管疾病并发焦虑抑郁症状2050例心理干预治疗分析 总被引:13,自引:1,他引:12
目的:了解心血管疾病并发焦虑抑郁症状的情况并探讨心理干预等对焦虑抑郁症状的影响。方法:对住院的2050例心血管疾病并发焦虑抑郁症状的患者进行回顾性分析。结果:心血管疾病患者中并发有焦虑抑郁症状者占56%;其常表现为类似心绞痛、左心衰竭症状,可并发有心律失常;高血压病并发有焦虑抑郁患者对血压升高的耐受性差,动态血压检查以非勺型改变者居多;单纯使用心血管药物治疗效果欠佳,心理干预,焦虑抑郁症状严重者结合抗焦虑抑郁药物疗效显著。结论:心血管疾病患者常并发焦虑抑郁症状,心理干预治疗等可有效改善患者的症状。 相似文献
87.
88.
The purpose of this study was to determine the dosimetric impact of a neurosurgical titanium mesh in patients treated with 6- and 18-MV photon beams. The effects of a 0.4-mm-thick titanium mesh on the dose profile at 3 regions within a solid water phantom were measured using extended dose range-2 (EDR2) film for 6- and 18-MV photon beams. All measurements were performed with the titanium mesh placed at a depth of 1.5 cm in the phantom. Films were exposed immediately above the mesh, immediately below the mesh, and at a depth of 5 cm from the surface of the phantom. The films were scanned using a scanning densitometer. In the region directly above the titanium mesh, there was an increase in dose of 7.1% for 6-MV photons and 4.9% for 18-MV photons. Directly below the titanium mesh, there was an average decrease in dose of 1.5% for 6-MV photons and an increase of 1.0% for 18-MV photons. At 5-cm depth, for 6- and 18-MV photons, there was a decrease in dose of 2.2% and 0.6%, respectively. We concluded that for cranial irradiation with high-energy photons, the dosimetric impact of a 0.4-mm titanium mesh is small and does not require modification in treatment parameters. 相似文献
89.
J. P. G. Kaajan 《Pharmacy World & Science》1989,11(4):112-117
The general management of patients with chronic obstructive pulmonary disease and asthma is discussed. Pathophysiological mechanisms of bronchial obstruction and inflammation are briefly described. The importance of preventive measures is emphasized. Medicine prescribed in chronic obstructive pulmonary disease and asthma, their relative place in treatment schedules and route of administration are reviewed. Finally, the importance of maximal bronchodilatation in exacerbations is stressed and the few indications for antibiotic treatment are discussed. 相似文献
90.
PETER K. K. LEE 《Australian Occupational Therapy Journal》1987,34(1):14-19
The Australian government established the Council on Overseas Professional Qualifications (COPQ) in 1969. In response to approaches by the occupational therapy profession, an Expert Panel in Occupational Therapy was established in 1979 in order to develop a screening examination to be used in assessing the competency of overseas trained occupational therapists. This paper describes the development of the COPQ examination for all overseas qualified occupational therapists wishing to work in Australia; the experience of candidates since its inception in 1983; and the problems associated with achieving recognition of the COPQ examination throughout Australia given the lack of uniform recognition procedures in the various States and Territories. The need for a consistent national approach to the policy of recognition and employment of overseas trained occupational therapists is addressed, with stress placed on the need for all employer groups, in both the public and the private sectors, to cooperate with COPQ's assessment procedures. 相似文献