全文获取类型
收费全文 | 2452829篇 |
免费 | 182031篇 |
国内免费 | 4248篇 |
专业分类
耳鼻咽喉 | 35154篇 |
儿科学 | 74321篇 |
妇产科学 | 63783篇 |
基础医学 | 342476篇 |
口腔科学 | 68392篇 |
临床医学 | 222087篇 |
内科学 | 481053篇 |
皮肤病学 | 48730篇 |
神经病学 | 206780篇 |
特种医学 | 98124篇 |
外国民族医学 | 886篇 |
外科学 | 370116篇 |
综合类 | 56908篇 |
现状与发展 | 1篇 |
一般理论 | 1063篇 |
预防医学 | 195849篇 |
眼科学 | 57013篇 |
药学 | 181435篇 |
60篇 | |
中国医学 | 4445篇 |
肿瘤学 | 130432篇 |
出版年
2019年 | 19430篇 |
2018年 | 26035篇 |
2017年 | 20121篇 |
2016年 | 22065篇 |
2015年 | 24844篇 |
2014年 | 35728篇 |
2013年 | 53649篇 |
2012年 | 73017篇 |
2011年 | 76852篇 |
2010年 | 45018篇 |
2009年 | 43101篇 |
2008年 | 72386篇 |
2007年 | 76892篇 |
2006年 | 77509篇 |
2005年 | 75496篇 |
2004年 | 72536篇 |
2003年 | 69954篇 |
2002年 | 68876篇 |
2001年 | 112913篇 |
2000年 | 116862篇 |
1999年 | 98781篇 |
1998年 | 28451篇 |
1997年 | 25952篇 |
1996年 | 25779篇 |
1995年 | 24925篇 |
1994年 | 23461篇 |
1993年 | 21838篇 |
1992年 | 79613篇 |
1991年 | 76581篇 |
1990年 | 73757篇 |
1989年 | 71015篇 |
1988年 | 66000篇 |
1987年 | 64954篇 |
1986年 | 61473篇 |
1985年 | 58547篇 |
1984年 | 44394篇 |
1983年 | 37784篇 |
1982年 | 23079篇 |
1981年 | 20540篇 |
1979年 | 41402篇 |
1978年 | 29104篇 |
1977年 | 24437篇 |
1976年 | 22897篇 |
1975年 | 24028篇 |
1974年 | 29697篇 |
1973年 | 28097篇 |
1972年 | 26277篇 |
1971年 | 24199篇 |
1970年 | 22789篇 |
1969年 | 21118篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
991.
J J Wyndaele 《Paraplegia》1991,29(7):490-494
In 52 patients with a post-traumatic spinal cord lesion, both proprioception and exteroception in the lower urinary tract were investigated by determination of filling perception and with sensory threshold measurement towards electrical stimulation. Patients with incomplete lesions had one or both types of perception. Of the 42 patients, with a lesion diagnosed clinically as complete, 15 perceived bladder filling, electrical stimulation or both stimuli, indicating the existence of a nervous afferent pathway between the lower urinary tract and the cerebral cortex. 相似文献
992.
B Kerboul J Le Saout C Lefevre D Miroux L Fabre J F Le Noac'h J M Rogero B Courtois 《Journal de chirurgie》1986,123(6-7):428-434
Results of three therapeutic modalities used for the treatment of a homogeneous series of patients with a Pouteau Colles fracture are analyzed. Orthopedic treatment provided deceiving results. Pinning was, on the contrary, very effective, intrafocal pinning with immediate mobilization of the wrist appearing perfectly effective. Few complications were reported in contrast to plastered immobilizations. Good results were obtained in 80% of cases and functional recovery was rapid, indicating that this method represents undoubted progress when compared with conventional therapies. 相似文献
993.
Lymphoscintigraphy in lymphedema: an aid to microsurgery 总被引:3,自引:0,他引:3
M Vaqueiro P Gloviczki J Fisher L H Hollier A Schirger H W Wahner 《Journal of nuclear medicine》1986,27(7):1125-1130
The role of lymphoscintigraphy, performed with 99mTc-labeled antimony sulfur colloid, in the diagnosis of lymphedema and as a test for selection of patients for microvascular operation was evaluated in 32 patients with primary and secondary lymphedema and four patients with other causes of leg edema. Lymphoscintigraphy clearly demonstrated if edema was of lymphatic origin. Five different image patterns were identified; abnormal image patterns could not be predicted from clinical history or physical findings. Quantitative evaluation of removal of the radioactive colloid from the injection site and appearance in lymph node sites and liver was of limited usefulness. Nine patients underwent various surgical procedures before or after lymphoscintigraphy. Lympho-venous anastomoses were possible only in patients who had patent lymph channels visible on lymphoscintigrams. Based on initial experience, lymphoscintigraphy seems to be useful to select patients for microvascular operation. 相似文献
994.
J M Berkowitz 《Journal of medical ethics》1991,17(3):136-137
After recently meeting with his biological parents, the author--a 29-year-old-married male--learned he had been an hour away from being aborted, being 'saved' only by extraordinary circumstances. In the paper the author reflects upon previous strong pro-choice beliefs and reasserts his commitment to a pro-choice philosophy, integrating his new personal experience. The paper pays particular attention to the biological mother's experience and how her fresh insights have reinforced the author's views on abortion. 相似文献
995.
996.
997.
998.
M J Thomas 《Indian pediatrics》1987,24(5):441-443
999.
J A Wilcox 《Primary care》1987,14(4):699-709
This article is intended to expand the clinician's understanding of psychosis. The concept of psychosis and the differential diagnosis of this condition are discussed. The treatment of psychotic illness also is briefly addressed. 相似文献
1000.
The Medical Research Council UKALL V trial for children with standard-risk acute lymphoblastic leukemia (ALL) (aged 1 to 14 years, leucocyte count less than 20 X 10(9)/L) was designed to determine whether the immunosuppressive effects of treatment could be reduced without sacrifice of antileukemic effect by alterations in the type of continuing therapy or in fractionation of cranial irradiation. Remission was achieved in 496 children on standard induction therapy, and 309 children received 24 Gy of cranial irradiation in ten to 16 fractions over 21 days, and 174 received 21 Gy in five to nine fractions over 21 days. The type of radiotherapy administered had no influence on relapse at any site or rate of death in remission. All 496 children were randomized to receive chemotherapy for 2 or 3 years with 6-mercaptopurine and methotrexate either as a continuous (group C) or a semicontinuous (group G) regimen or as a five-day pulse every 3 weeks (group I). All groups also received vincristine and prednisolone every 6 weeks. With a minimum follow-up of almost 7 years, patients in group I had significantly fewer remission deaths (P = .025) but a much higher rate of bone marrow relapse than those in group C or G (P = .002). There was an overall benefit for 3 years of chemotherapy compared with 2 years, which in contrast to previous studies, was more apparent in girls and in patients in groups C and G. Testicular relapse occurred in 37 boys, including 19 patients off therapy, with a previously negative biopsy. The overall results confirmed the prognostic significance of initial leucocyte count, even among these standard-risk patients, while girls had a superior rate of disease-free survival, but not of hematologic remission. It is concluded that, even among standard-risk patients, the prognosis is influenced by the height of the initial leukocyte count. While alterations in the fractionation of cranial irradiation do not appear to have influenced disease-free survival, intermittent continuing chemotherapy, although less immunosuppressive, is less effective than conventional continuous therapy in the treatment of ALL. In this study, 3 years of chemotherapy appeared superior to 2 years. 相似文献