全文获取类型
收费全文 | 3787篇 |
免费 | 335篇 |
国内免费 | 20篇 |
专业分类
耳鼻咽喉 | 39篇 |
儿科学 | 83篇 |
妇产科学 | 92篇 |
基础医学 | 464篇 |
口腔科学 | 39篇 |
临床医学 | 457篇 |
内科学 | 672篇 |
皮肤病学 | 35篇 |
神经病学 | 517篇 |
特种医学 | 232篇 |
外科学 | 478篇 |
综合类 | 101篇 |
一般理论 | 2篇 |
预防医学 | 345篇 |
眼科学 | 33篇 |
药学 | 300篇 |
中国医学 | 6篇 |
肿瘤学 | 247篇 |
出版年
2021年 | 45篇 |
2019年 | 43篇 |
2018年 | 57篇 |
2017年 | 41篇 |
2016年 | 39篇 |
2015年 | 52篇 |
2014年 | 64篇 |
2013年 | 112篇 |
2012年 | 139篇 |
2011年 | 158篇 |
2010年 | 79篇 |
2009年 | 70篇 |
2008年 | 138篇 |
2007年 | 132篇 |
2006年 | 125篇 |
2005年 | 149篇 |
2004年 | 110篇 |
2003年 | 158篇 |
2002年 | 138篇 |
2001年 | 117篇 |
2000年 | 124篇 |
1999年 | 113篇 |
1998年 | 61篇 |
1997年 | 45篇 |
1995年 | 42篇 |
1994年 | 41篇 |
1992年 | 86篇 |
1991年 | 62篇 |
1990年 | 68篇 |
1989年 | 84篇 |
1988年 | 102篇 |
1987年 | 104篇 |
1986年 | 76篇 |
1985年 | 83篇 |
1984年 | 62篇 |
1983年 | 61篇 |
1982年 | 46篇 |
1981年 | 45篇 |
1980年 | 44篇 |
1979年 | 68篇 |
1978年 | 53篇 |
1977年 | 40篇 |
1976年 | 37篇 |
1974年 | 50篇 |
1973年 | 62篇 |
1972年 | 60篇 |
1971年 | 51篇 |
1970年 | 42篇 |
1969年 | 40篇 |
1968年 | 36篇 |
排序方式: 共有4142条查询结果,搜索用时 15 毫秒
1.
For many parents stopping life-sustaining medical treatment on their dying infant is psychologically impossible. Dostoevsky's insights into human behavior, particularly the fact that individuals do not want the anxiety and guilt associated with responsibility for making difficult decisions, might change the way physicians approach parents for permission to withdraw life-prolonging medical interventions on dying infants. 相似文献
2.
3.
BACKGROUND: Telekid Care is a project that attempts to overcome the health and educational barriers faced by children in urban Kansas City, Kansas. Telemedicine units were placed in school nurses' offices and linked to physicians at the University of Kansas Medical Center (KUMC). This paper describes the development of this project, presents utilization data, and discuss the lessons learned from the application of telemedicine in a school setting. RESULTS: Project developers spent 11 months designing the protocol and procedures for a pilot test. Four elementary schools participated, and 187 consultations were conducted. The most common reason for consultation was ear, nose, and throat (ENT) problems, making up 28% of all consults. Mandatory school physical examinations and dermatology problems combined to make up an additional 40% of the consults. The average time that elapsed between the request for a consult and confirmation of an appointment was 23 minutes. When immediate service was requested, 85% of the consults occurred the day of the request. These results strongly demonstrate telemedicine's ability to offer immediate service to children in need. CONCLUSION: Telemedicine enabled underserved inner-city children to gain access to health services. This service was most effective when it was integrated into the delivery system. Furthermore, community groups strongly favored the project, positively influencing its acceptance as an innovative health care delivery system. 相似文献
4.
5.
6.
Day surgery is expanding in the UK. It offers benefits for both the patient and the NHS. If this initial momentum is to be maintained it is vital that patients are carefully selected and prepared for day case procedures. Failure to do so will result in falling standards and loss of support from both clinicians and patients. 相似文献
7.
8.
Granulomatous inflammation and monstrous giant cells in response to intraperitoneal hormone implants in channel catfish (Ictalurus punctatus) 总被引:1,自引:0,他引:1
Plastic implants (2.7 mm maximum dimension) of an ethyl vinyl acetate copolymer (EVAc) matrix, containing inulin, bovine serum albumin (BSA) and luteinizing hormone releasing hormone (LHRH), were covered with impervious EVAc and then surgically placed into the peritoneal cavity of 1-year-old channel catfish, Ictalurus punctatus. In fish kept in cold water (13 degrees C), 10 per cent of the implants per month were encapsulated by granulation tissue. In fish kept in warm water (27 degrees C), 20 per cent of the implants per month were encapsulated, with a total of 86 per cent encapsulated at 5 months. In addition to fibroblasts and capillaries, the granulation tissue included macrophages, neutrophils, lymphocytes, plasma cells, multinucleated giant cells and a matrix of collagen fibres. The density of the fibrous capsule increased with time. In a separate investigation, it was found that the thickness of the capsule was directly proportional to the degree of exposure of the EVAc matrix to the fish (exposure influenced by the rate of dissolution of the capsule content). Monstrous giant cells with up to 600 nuclei per 5 microns thick section were seen in capsules around implants. On intraperitoneally implanted cover glasses, whole giant cells contained up to 6000 nuclei and were interconnected by cytoplasmic bridges. Signs of neoplasia, implant expulsion or massive adhesions were not seen. 相似文献
9.
Judith V. Becker PhD John A. Hunter PhD Dennis Goodwin BS Meg S. Kaplan PhD Douglas Martinez MA 《Sexual abuse : a journal of research and treatment》1992,5(1):45-51
Twenty adolescent male sexual offenders were evaluated by penile plethysmography on two separate occasions. Stimuli consisted of 19, two-minute audiotaped cues. Test-retest reliability was demonstrated for 15 of the 19 audiotaped vignettes. The highest correlations were found for those sexual behaviors in which the adolescents had engaged. 相似文献
10.
RAMASWAMY MANIKANDAN MAGDA KUJAWA EVELYN PEARSON PATRICK H O''REILLY STEPHEN CW BROWN 《International journal of urology》2004,11(4):206-212
BACKGROUND: To evaluate the results of the tension-free vaginal tape procedure (TVT) from a patient's perspective. METHODS: Between May 1999 and January 2002, 90 patients underwent a TVT for genuine stress incontinence (GSI) and mixed incontinence. Prior to the procedure, GSI was confirmed by clinical examination and urodynamic studies. Results were then audited from patient notes and the same patients were sent questionnaires to examine results from a patient perspective. RESULTS: Overall response rate to the questionnaire was 70 (77%). The mean age of the patients was 50.4 years (range 31-83 years). Sixty-one patients had spinal anesthesia, seven had general anesthesia and two had local anesthesia. Mean hospital stay was 3.36 days (range 2-14 days) and mean period from the operation to the time of the survey and audit was 16.34 months (range 3-28; SD 6.92). Thirty-nine (56%) of the 70 patients who answered said that the operation had cured their incontinence, 16 (23%) had an improvement in their symptoms, 7 (10%) had worsening of their symptoms and 8 (11%) felt that the operation did not make any difference. The overall success rate according to the patients' perspective was 79%, whereas our audit showed an overall success rate of 86% (77% and 82%, respectively, when we compared only the 66 patients who had both notes and replies available for analysis). CONCLUSION: Although a patient's perception regarding the success of TVT tends to differ from that of a clinician, it was not found to be statistically significant (P = 0.22, McNemar test). The TVT is a very successful operation, but realistic cure rates should be offered to patients. 相似文献