全文获取类型
收费全文 | 4900篇 |
免费 | 382篇 |
国内免费 | 33篇 |
专业分类
耳鼻咽喉 | 88篇 |
儿科学 | 92篇 |
妇产科学 | 56篇 |
基础医学 | 474篇 |
口腔科学 | 121篇 |
临床医学 | 529篇 |
内科学 | 1117篇 |
皮肤病学 | 309篇 |
神经病学 | 347篇 |
特种医学 | 252篇 |
外科学 | 821篇 |
综合类 | 108篇 |
现状与发展 | 30篇 |
一般理论 | 2篇 |
预防医学 | 290篇 |
眼科学 | 129篇 |
药学 | 168篇 |
中国医学 | 5篇 |
肿瘤学 | 377篇 |
出版年
2024年 | 19篇 |
2023年 | 196篇 |
2022年 | 62篇 |
2021年 | 113篇 |
2020年 | 103篇 |
2019年 | 105篇 |
2018年 | 156篇 |
2017年 | 113篇 |
2016年 | 114篇 |
2015年 | 163篇 |
2014年 | 213篇 |
2013年 | 251篇 |
2012年 | 302篇 |
2011年 | 280篇 |
2010年 | 220篇 |
2009年 | 240篇 |
2008年 | 257篇 |
2007年 | 295篇 |
2006年 | 248篇 |
2005年 | 221篇 |
2004年 | 201篇 |
2003年 | 174篇 |
2002年 | 169篇 |
2001年 | 44篇 |
2000年 | 57篇 |
1999年 | 68篇 |
1998年 | 67篇 |
1997年 | 82篇 |
1996年 | 71篇 |
1995年 | 63篇 |
1994年 | 56篇 |
1993年 | 67篇 |
1992年 | 37篇 |
1991年 | 46篇 |
1990年 | 36篇 |
1989年 | 37篇 |
1988年 | 43篇 |
1987年 | 29篇 |
1986年 | 24篇 |
1985年 | 24篇 |
1984年 | 21篇 |
1983年 | 19篇 |
1982年 | 21篇 |
1981年 | 25篇 |
1980年 | 19篇 |
1978年 | 13篇 |
1977年 | 13篇 |
1976年 | 21篇 |
1975年 | 20篇 |
1973年 | 8篇 |
排序方式: 共有5315条查询结果,搜索用时 15 毫秒
1.
A mixed‐method study of effects of a therapeutic play intervention for children on parental anxiety and parents' perceptions of the intervention
下载免费PDF全文
![点击此处可从《Journal of advanced nursing》网站下载免费的PDF全文](/ch/ext_images/free.gif)
2.
Jos M. Martín Encarnacion Montesinos Pilar Cordero Victor Gonzalez Dolores Ramon 《Pediatric dermatology》2019,36(2):265-267
Trichotillomania is a form of traction alopecia resulting from repetitive and compulsive hair pulling and plucking. Trichotillomania and patchy alopecia areata may have similar clinical and dermoscopic features in some cases. On trichoscopic examination, the presence of black dots, coiled or hook hair, shafts of varying lengths with fraying or split ends (trichoptilosis), and an absence of exclamation mark hairs and yellow dots are suggestive of trichotillomania. 相似文献
3.
Hysterosalpingography was performed in 31 patients by means of a low-dose scanning-beam digital radiographic system. The technique permits adequate evaluation of gynecologic abnormalities while allowing significant reduction in radiation: 2.4-mR (6.1 X 10(-7) C/kg) exposure to the skin and 0.7-mrad (7 X 10(-6) Gy) mean dose to the ovaries per image obtained. Sixteen patients demonstrated readily recognizable and documented abnormalities, corroborated by laparoscopy, laparotomy, or other supportive evidence. 相似文献
4.
From 1974 to 1983, simple and radical nephrectomies were performed at the Chaim Sheba Medical Center (Tel Hashomer, Israel) for renal cell carcinoma. The authors reviewed 109 cases that were followed for a period ranging from 5 to 14 years. Simple nephrectomy was performed in 55 patients, and 54 patients underwent radical nephrectomy. The selection of the surgical procedure was based on the surgeon's preference and not on the basis of clinical stage, age, or sex. The surgical results and survival rates were assessed according to the pathologic stage of the tumors. Among patients with Stage I tumor, radical nephrectomy produced better survival rates at 5 and 10 years (P = 0.03); however, when the non-cancer deaths were excluded, the difference in survival was not statistically significant. For Stage I tumors the survival free of disease at 5 years was better for the radical nephrectomy group, but this difference was not statistically significant. No difference was noticed in the local recurrence rate between the two groups. Nephrectomy in patients with Stage IV disease did not alter survival regardless of the type of operation. 相似文献
5.
Ullmann Yehuda MD Shoshani Oren MD Fodor Adriana MD Ramon Yitzhak MD Carmi Nurit PhD Eldor Liron MD Gilhar Amos MD 《Dermatologic surgery》2005,31(10):1304-1307
BACKGROUND: The use of suctioned fat grafts for correction of soft tissue defects is a widespread procedure in esthetic and reconstructive surgery. The main disadvantage of this simple and sensible procedure is the unpredictable absorption rate of the fat graft. A lot of research has been performed aiming for enhancement of the take of the fat grafts. OBJECTIVE: Our study was performed to find if there is any favorable donor site for fat harvesting. METHODS: This in vivo experiment using the nude mice model enables the study of the long-term survival of human fat in an animal model. The fat was harvested from three donor areas: the thigh, abdomen, and breast of a 48-year-old woman who came for an elective esthetic procedure. After centrifugation, 1 cc of fat was injected subcutaneously into the scalp of the nude mouse. There were 15 mice in each of the three groups, according to the selected donor sites. The animals were sacrificed 16 weeks after the procedure. The extracted fat was evaluated in terms of weight, volume, and six histologic parameters: integrity, vascularization, cyst formation, fibrosis, necrosis, and inflammation. RESULTS: This study could not find any statistically significant differences between the three investigated donor sites in the evaluated parameters. CONCLUSION: On the basis of this study, there is no favorable area for harvesting fat grafts. The donor site can be chosen according to the preference of the surgeon and the patient. 相似文献
6.
Deep Phenol Peeling and Fat Injection: Treatment Option for Perioral Wrinkles in a Scleroderma Patient 总被引:1,自引:0,他引:1
Background Scleroderma is characterized by abnormal growth of connective tissue, often manifested with hard and tight skin. The viscous properties of the skin are impaired, and the main histologic changes include a thicker dermis, absence of pilosebaceous units, and a decreased space between collagen bundles. Often these patients have wound healing problems.
Objective The objective was to demonstrate a case of scleroderma that had deep phenol perioral peeling and fat injection into the lips. According to our bibliographic search, this is the first report in the English literature of using these modalities in scleroderma patients.
Methods A 64-year-old woman suffering from scleroderma for more than 20 years came for improvement of her perioral appearance. We decided to manage her deep perioral wrinkles by deep peeling using the Baker formula and concomitantly to use autologous fat injection to augment her thin lips.
Results The healing of our patient after these two interventions was uneventful, and satisfactory results have been obtained.
Conclusion Based on our experience, this intervention may be suggested for patients suffering from scleroderma after a detailed explanation of the possible wound healing difficulties is provided to the patients. 相似文献
Objective The objective was to demonstrate a case of scleroderma that had deep phenol perioral peeling and fat injection into the lips. According to our bibliographic search, this is the first report in the English literature of using these modalities in scleroderma patients.
Methods A 64-year-old woman suffering from scleroderma for more than 20 years came for improvement of her perioral appearance. We decided to manage her deep perioral wrinkles by deep peeling using the Baker formula and concomitantly to use autologous fat injection to augment her thin lips.
Results The healing of our patient after these two interventions was uneventful, and satisfactory results have been obtained.
Conclusion Based on our experience, this intervention may be suggested for patients suffering from scleroderma after a detailed explanation of the possible wound healing difficulties is provided to the patients. 相似文献
7.
Borras Merce; Valdivielso Jose M.; Egido Ramon; Vicente de Vera Pilar; Bordalba Josep Ramon; Fernandez Elvira 《Nephrology, dialysis, transplantation》2006,21(3):789-791
8.
9.
10.
Duplication of the urethra with an accessory phallic urethra in females is a rare anomaly usually discovered early in life because of associated genitourinary anomalies. We report on a thirty-three-year-old female with this anomaly who presented with double urinary stream and recurrent urinary tract infections. The nature of this anomaly, its diagnosis, and management are reviewed. 相似文献