全文获取类型
收费全文 | 1086368篇 |
免费 | 81317篇 |
国内免费 | 3007篇 |
专业分类
耳鼻咽喉 | 14683篇 |
儿科学 | 37487篇 |
妇产科学 | 30404篇 |
基础医学 | 156893篇 |
口腔科学 | 30626篇 |
临床医学 | 96477篇 |
内科学 | 215404篇 |
皮肤病学 | 26128篇 |
神经病学 | 86453篇 |
特种医学 | 40322篇 |
外国民族医学 | 306篇 |
外科学 | 160706篇 |
综合类 | 24505篇 |
一般理论 | 411篇 |
预防医学 | 86668篇 |
眼科学 | 24672篇 |
药学 | 78000篇 |
5篇 | |
中国医学 | 2648篇 |
肿瘤学 | 57894篇 |
出版年
2021年 | 10000篇 |
2019年 | 10162篇 |
2018年 | 14145篇 |
2017年 | 10402篇 |
2016年 | 11365篇 |
2015年 | 12649篇 |
2014年 | 17432篇 |
2013年 | 26440篇 |
2012年 | 35509篇 |
2011年 | 37901篇 |
2010年 | 22334篇 |
2009年 | 20405篇 |
2008年 | 34022篇 |
2007年 | 35867篇 |
2006年 | 36020篇 |
2005年 | 34715篇 |
2004年 | 33556篇 |
2003年 | 32177篇 |
2002年 | 30785篇 |
2001年 | 49292篇 |
2000年 | 50828篇 |
1999年 | 42224篇 |
1998年 | 11772篇 |
1997年 | 10586篇 |
1996年 | 10544篇 |
1995年 | 10122篇 |
1994年 | 9372篇 |
1993年 | 8701篇 |
1992年 | 32784篇 |
1991年 | 31883篇 |
1990年 | 31430篇 |
1989年 | 30203篇 |
1988年 | 27502篇 |
1987年 | 27625篇 |
1986年 | 25698篇 |
1985年 | 24855篇 |
1984年 | 18578篇 |
1983年 | 15687篇 |
1982年 | 9416篇 |
1979年 | 17005篇 |
1978年 | 12332篇 |
1977年 | 10374篇 |
1976年 | 9831篇 |
1975年 | 10241篇 |
1974年 | 12419篇 |
1973年 | 11921篇 |
1972年 | 10950篇 |
1971年 | 10201篇 |
1970年 | 9441篇 |
1969年 | 8809篇 |
排序方式: 共有10000条查询结果,搜索用时 9 毫秒
941.
Seymour Solomon Brian M Grosberg Deborah I Friedman Richard B Lipton 《Journal of neuro-ophthalmology》2007,27(3):243-4; author reply 244-5
942.
943.
PD Dr. C. Wagner G. Zimmermann A. Moghaddam S. Studier-Fischer B. Vock A. Wentzensen 《Trauma und Berufskrankheit》2005,7(3):168-174
Rupture of the Achilles tendon is typically associated with sportive activities with increasing tendency; it occurs most commonly in the third to fourth decade of life with a male-to-female ratio of 5–10:1. Ruptures are caused predominantly by a sudden, unexpected overextension of the tendon while direct trauma is less frequent. The recommended treatment of the injury remains controversial. In Germany, due to the good functional results, the open surgical repair represents the standard therapy since many years. The open suture technique offers the advantage of a lower re-rupture rate but is associated with the risk of wound-related complications including infection. By percutaneous suture techniques a significant decrease in the rate of infections and complications in wound healing could be achieved by minimal-access with reduced soft tissue trauma; on the other hand an increased rate of lesions of the sural nerve is reported. Dynamic imaging assessment of ultrasound or MRI allows a more accurate localisation of the ruptured ends of the tendons which is the prerequisite for the non-operative primary functional treatment of Achilles tendon ruptures. This conservative treatment regime is recommended when adaptation of the ends of the ruptured tendon is possible in 20° plantar flexion of the foot. Moreover, the desired level of daily activity and the patients’ degree of compliance has to be considered. Operative management should be avoided in the elderly patient or patients with risk factors like immunosuppressive therapy, diabetes mellitus, steroid use or failure to comply. 相似文献
944.
Serum LH, FSH and testosterone were quantitated in 9 patients with pure motor stroke within 24-48 h of its reported onset. High circulating LH with normal or low testosterone was noted in 8 of them. In response to an intravenous bolus of GnRH, the LH responses were exaggerated in all, but the FSH responses in 7 of them were comparable to those in eugonadal age matched controls. The rise in testosterone following 2000U hCG daily for 3 consecutive days was insignificant in the patients group compared to the controls. The data suggest normally operative pituitary testicular feed-back but decreased Leydig cell response in pure motor stroke. 相似文献
945.
The clinical features and prognosis of pseudoseizures diagnosed using video-EEG telemetry 总被引:25,自引:0,他引:25
A total of 110 patients underwent diagnostic evaluation for attacks of uncertain origin by means of video-EEG telemetry and had a diagnosis of pseudoseizures confirmed. Eighty-six patients (78%) were female, mean age of onset 25 years, and mean duration of attacks was 3 years. Many of the patients had erroneously been thought to be suffering from epilepsy. The attacks could be divided into two broad categories: attacks of collapse (one-third) and attacks with prominent motor activity (two-thirds). In some patients, the attacks were associated with incontinence and injury. The differential diagnosis and clinical features of the attacks are described. Additional psychiatric features were present in 52 (47%) patients. Follow-up (for a median 5 years; range, 1 to 14 years) showed that 40% of these patients stopped having pseudoseizures. This favorable outcome was associated with being female, leading an independent life, a formal psychological approach to therapy and counseling, and the absence of coexisting epilepsy, but not with the duration of pseudoepilepsy, prior episodes of pseudostatus, the coexistence of overt psychiatric disease, or the clinical features of the attacks. 相似文献
946.
947.
A study on the pathologic findings after recession and resection of extraocular muscles in rabbits was performed. Fibrosis of the extraocular muscles increased with time, which showed no difference between the recessed and resected muscles. Inflammation and foreign body reaction decreased with time, which showed no difference between the recessed and resected muscles. Adhesions of extraocular muscles to the sclera were observed from one month after the operation. The resected muscles showed milder adhesion to the sclera than the recessed ones. The operated extraocular muscles showed atrophies at one month, which showed no difference between the recessed and resected muscles. According to our results, when reoperation is needed, fibrosis of the extraocular muscles after recession and resection should be considered when making a decision on the amount of muscle to be recessed and resected. 相似文献
948.
We report a case of pulmonary oedema follwing airway obstructionin a patient who underwent biopsy of a tumo ur in volving theanterior mediastinum and neck. The occurrence of airway obstructionin patients with anterior mediastinal masses, and the pathogenesisof pulmonary oedema occurring in association with airway obstruction,are discussed. 相似文献
949.
Based on the experience with treatment of 26 patients the authors recommend to use mainly conservative treatment with the intrapleural administration of fibrinolytic drugs. The method was used in 20 patients. All of them recovered. 相似文献
950.
N G Crisp C B Ijsselmuiden R De Swardt M M Steyn D M Gibbs E T Tshabalala 《Suid-Afrikaanse tydskrif vir geneeskunde》1987,72(5):345-348
Following the outbreak of poliomyelitis in Gazankulu in 1982, the immunisation services in Gazankulu were thoroughly examined. As a result of this, a comprehensive immunisation policy for Gazankulu was accepted in November 1986. The broad aim of the policy is to provide effective immunisation to all Gazankulu residents against tuberculosis, diphtheria, pertussis, tetanus, poliomyelitis and measles. A specific objective is that by the end of 1987, 85% of under-5s should have been vaccinated against these six diseases and by the end of 1990 this percentage should be 97%. The detailed strategies to reach these objectives are highlighted. Within the framework of the objectives, the policy allows different areas to formulate individual strategies. Programme monitoring and community involvement are two crucial aspects of the policy and these are discussed in detail. The early successes and difficulities in implementing this policy are discussed. 相似文献