全文获取类型
收费全文 | 1947篇 |
免费 | 97篇 |
国内免费 | 8篇 |
专业分类
耳鼻咽喉 | 25篇 |
儿科学 | 69篇 |
妇产科学 | 15篇 |
基础医学 | 191篇 |
口腔科学 | 61篇 |
临床医学 | 204篇 |
内科学 | 477篇 |
皮肤病学 | 24篇 |
神经病学 | 171篇 |
特种医学 | 124篇 |
外国民族医学 | 1篇 |
外科学 | 320篇 |
综合类 | 48篇 |
一般理论 | 1篇 |
预防医学 | 127篇 |
眼科学 | 17篇 |
药学 | 117篇 |
中国医学 | 8篇 |
肿瘤学 | 52篇 |
出版年
2021年 | 21篇 |
2020年 | 17篇 |
2018年 | 12篇 |
2017年 | 12篇 |
2016年 | 23篇 |
2015年 | 20篇 |
2014年 | 29篇 |
2013年 | 55篇 |
2012年 | 73篇 |
2011年 | 67篇 |
2010年 | 64篇 |
2009年 | 52篇 |
2008年 | 54篇 |
2007年 | 64篇 |
2006年 | 91篇 |
2005年 | 76篇 |
2004年 | 51篇 |
2003年 | 69篇 |
2002年 | 62篇 |
2001年 | 67篇 |
2000年 | 69篇 |
1999年 | 77篇 |
1998年 | 50篇 |
1997年 | 35篇 |
1996年 | 33篇 |
1995年 | 27篇 |
1994年 | 30篇 |
1993年 | 29篇 |
1992年 | 48篇 |
1991年 | 29篇 |
1990年 | 45篇 |
1989年 | 50篇 |
1988年 | 41篇 |
1987年 | 44篇 |
1986年 | 43篇 |
1985年 | 46篇 |
1984年 | 29篇 |
1983年 | 35篇 |
1982年 | 24篇 |
1981年 | 25篇 |
1980年 | 23篇 |
1979年 | 33篇 |
1978年 | 22篇 |
1977年 | 24篇 |
1976年 | 29篇 |
1974年 | 15篇 |
1973年 | 17篇 |
1972年 | 10篇 |
1971年 | 11篇 |
1969年 | 10篇 |
排序方式: 共有2052条查询结果,搜索用时 0 毫秒
1.
BARI NUHOLU ALI AYYILDIZ VECIHI FIDAN ÖZDEN CEBECI UUR KOAR CANKON GERMIYANOLU 《International journal of urology》2006,13(2):109-110
OBJECTIVE: Nocturnal enuresis is a common pediatric problem, the etiology of which is unclear. In recent years, various studies have been published stating that children with nocturnal enuresis exhibit growth and skeletal maturation retardation. METHODS: In this cross-sectional study, we included 27 patients (16 boys, 11 girls) between the ages of 6 and 14 years who had presented with primary nocturnal enuresis (PNE) complaints. We included in the evaluation 19 healthy subjects (12 boys, 7 girls), who were the siblings of the children with PNE, as the control group. RESULTS: The patients in both groups were similar in chronological age, bone age, height and weight, with no significant difference between groups (P>0.05). CONCLUSION: The two groups in our study consisted of the same genetic background. Thus, our results were found to be different from the previous studies. We have concluded that there is no direct relationship between enuresis nocturnal and skeletal maturation. 相似文献
2.
Hernia of the inferior lumbar space. A cause of back pain 总被引:1,自引:0,他引:1
H G Light 《Archives of surgery (Chicago, Ill. : 1960)》1983,118(9):1077-1080
Twenty hernias of incarcerated fat at the inferior lumbar space were seen during a 23-year period. The usual complaint was a painful mass that caused a backache. The condition was more common in women and girls than in men (18 v two). The wider female pelvis creates a larger inferior lumbar space, which predisposes to the hernia. The hernia appears through a defect of the covering lumbodorsal fascia. Increased physical activity in young women seemed to be a causative factor. One patient had acute strangulation of incarcerated fat. Nineteen of the 20 hernias were treated with surgical excision and repair of the lumbodorsal fascial defect. Results of treatment were good. Though rare, hernias of the inferior lumbar space should be considered when back pain is present, particularly in a young, athletic woman. 相似文献
3.
4.
5.
Diseases like rotavirus afflict both upper- and lower-income countries, but most serious illnesses and deaths occur among the latter. It is a vital public health issue that vaccines for these types of global diseases can recover research and development (R&D) costs from high-priced markets quickly so that manufacturers can offer affordable prices to lower-income nations. Cost recovery depends on how high R&D costs are, and this study attempts to replace high, unverified estimates with lower, more verifiable estimates for two new vaccines, RotaTeq (Merck) and Rotarix (GlaxoSmithKline or GSK), based on detailed searches of public information and follow-up interviews with senior informants. We also offer a new perspective on “cost of capital” as a claim for recovery from public bodies. Our estimates suggest that companies can recover all fixed costs quickly from affluent markets and thus can offer these vaccines to lower-income countries at prices they can afford. Better vaccines are a shared project between companies and public health agencies; greater transparency and consistency in reporting of R&D costs is needed so that fair prices can be established. 相似文献
6.
7.
Edwin H. Preston Jimmy A. Light Robert L. Kampen Allan D. Kirk 《American journal of transplantation》2004,4(2):283-285
Passenger leukocytes have been suggested to be both pro-tolerant and immunogenic. The opportunity to evaluate the role of allogeneic passenger leukocytes in humans was presented by a 47-year-old man who donated bone marrow to his HLA-identical leukemic sister. Eleven years later he developed renal failure. The sister's marrow was noted to be 100% XY karyotype and free of malignancy. She donated a kidney to her brother. Immunosuppression was tapered following transplantation. After 6 months, the recipient was on monotherapy sirolimus, 1 mg every third day. A surveillance biopsy was normal and sirolimus was stopped. Eight weeks later, he presented with severe rejection that reversed with Thymoglobulin. Renal function returned to baseline and has been stable on conventional immunosuppression. 相似文献
8.
9.
10.
The urethras from 1 patient with cervical (C1-2) and 2 patients with thoracic (T10) spinal cord lesions were studied histochemically and immunohistochemically for adrenergic and vasoactive intestinal polypeptide-immunoreactive nerves. Dense vasoactive intestinal polypeptide-immunoreactive but not adrenergic nerves were found in the urethral smooth muscle, around the blood vessels and at the base of the mucosa in the patients with thoracic lesions. In contrast, adrenergic but not vasoactive intestinal polypeptide-immunoreactive nerves were found associated with the smooth muscle of the urethra and around the blood vessels in the patient with a cervical lesion. In patients with cervical or thoracic lesions neither adrenergic nor vasoactive intestinal polypeptide-immunoreactive nerves were found around striated muscle fibers of the intrinsic external urethral sphincter. The results are discussed in relation to the possible function of these nerves in the urethra of patients with autonomic dysreflexia and detrusor-sphincter dyssynergia. 相似文献