全文获取类型
收费全文 | 75010篇 |
免费 | 7248篇 |
国内免费 | 2835篇 |
专业分类
耳鼻咽喉 | 139篇 |
儿科学 | 749篇 |
妇产科学 | 560篇 |
基础医学 | 3331篇 |
口腔科学 | 560篇 |
临床医学 | 7162篇 |
内科学 | 12005篇 |
皮肤病学 | 1137篇 |
神经病学 | 2520篇 |
特种医学 | 996篇 |
外国民族医学 | 7篇 |
外科学 | 3066篇 |
综合类 | 9037篇 |
现状与发展 | 9篇 |
一般理论 | 3篇 |
预防医学 | 5180篇 |
眼科学 | 676篇 |
药学 | 30870篇 |
37篇 | |
中国医学 | 3243篇 |
肿瘤学 | 3806篇 |
出版年
2024年 | 297篇 |
2023年 | 1448篇 |
2022年 | 2334篇 |
2021年 | 3298篇 |
2020年 | 3175篇 |
2019年 | 3161篇 |
2018年 | 3089篇 |
2017年 | 3054篇 |
2016年 | 2838篇 |
2015年 | 2860篇 |
2014年 | 4848篇 |
2013年 | 8095篇 |
2012年 | 4654篇 |
2011年 | 4883篇 |
2010年 | 3887篇 |
2009年 | 3471篇 |
2008年 | 3334篇 |
2007年 | 3357篇 |
2006年 | 2982篇 |
2005年 | 2664篇 |
2004年 | 2290篇 |
2003年 | 2065篇 |
2002年 | 1600篇 |
2001年 | 1529篇 |
2000年 | 1177篇 |
1999年 | 1012篇 |
1998年 | 878篇 |
1997年 | 848篇 |
1996年 | 684篇 |
1995年 | 619篇 |
1994年 | 538篇 |
1993年 | 459篇 |
1992年 | 537篇 |
1991年 | 447篇 |
1990年 | 343篇 |
1989年 | 287篇 |
1988年 | 292篇 |
1987年 | 269篇 |
1986年 | 220篇 |
1985年 | 247篇 |
1984年 | 194篇 |
1983年 | 151篇 |
1982年 | 130篇 |
1981年 | 92篇 |
1980年 | 74篇 |
1979年 | 71篇 |
1978年 | 77篇 |
1977年 | 60篇 |
1976年 | 50篇 |
1975年 | 50篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
61.
应用0.5%环孢霉素A(cyclosporin A,CsA)滴眼治疗穿透性角膜移植术后发生免疫排斥患者16例(16只眼),治愈9只眼,好转6只眼,无效1只眼。随访5~24个月,其中2只眼因停药复发,1只眼于拆线后复发,继续用药或增加给药次数后治愈。研究表明0.5%CsA滴眼剂治疗术前移植床条件较好,角膜移植术后发生免疫排斥的病例可得到良好疗效;而对术前移植床条件较差,角膜移植术后发生免疫排斥的病例有一定的疗效。作者对眼局部应用CsA治疗角膜移植排斥的疗效和作用机理进行了讨论。 相似文献
62.
L. LEIBOVICI W. R. GRANSDEN S. J. EYKYN H. KONSIBERGER M. DRUCKER S. D. PITLIK I. PHILLIPS 《Journal of internal medicine》1993,234(1):83-89
Abstract. Objectives. To define risk factors associated with bacteraemia caused by Staphylococcus aureus or coagulase-negative staphylococci; and to use them to define patients in need of empiric anti-staphylococcal antibiotic treatment. Design, Derivation set: observational, prospective study; validation set: retrospective analysis of a prospectively collected database. Setting. Derivation set: Beilinson Medical Centre, Petah Tiqva, Israel—a 900-bed university hospital. Validation set: St Thomas's Hospital, London, UK—an 800-bed teaching hospital. Subjects. All episodes of bacteraemia detected at Beilinson Medical Centre between March 1988 and September 1990 (derivation set, n = 1410), and at St Thomas's Hospital during 1987–1990 (validation set, n = 1040). Interventions. None. Main outcome measures. Percentage of staphylococcal bacteraemia in groups of patients defined by the models. Results. The following factors were associated with Staphylococcus aureus bacteraemia: focus of infection (whether high or low risk), haemodialysis, intravenous drug abuse and infection acquired in the orthopaedic ward. A logistic model was used to divide the derivation set into three groups with percentages of Staphylococcus aureus bacteraemia of 1.8%, 13.2% and 33.7% (P < 0.0001); and the validation group 2.5%, 18.2% and 53.2% (P < 0.0001). Factors associated with coagulase-negative staphylococcal bacteraemia were: central or peripheral intravenous catheter as the focus of infection, a preterm neonate, the presence of a central intravenous catheter, low temperature, and a low white blood cell count. A second model including those factors was used to divide the derivation set into three groups with percentages of coagulase-negative staphylococcal bacteraemia of 1.9%, 22.8%, and 43% (P < 0.0001). In the validation set, the percentages were 2.9%, 22.4% and 31.0% (P < 0.001). Conclusions. The present study defines groups at high risk for staphylococcal bloodstream infection, in which empiric treatment should include an anti-staphylococcal drug. 相似文献
63.
A型肉毒杆菌毒素治疗麻痹性斜视 总被引:2,自引:0,他引:2
采用眼外肌注射A型肉毒杆菌毒素的方法,治疗17例(18只眼)麻痹性内斜视患者。最大的肌肉麻痹作用发生于注射后7~14天,最大斜视矫正度为50-,随访时间为4~20周,5例最终获得双眼视。未见全身副作用。认为,这种疗法可在部分患卉中替代斜视矫正术。 相似文献
64.
65.
Colonic Drug Delivery: Enhanced Release of Indomethacin from Cross-Linked Chondroitin Matrix in Rat Cecal Content 总被引:4,自引:0,他引:4
Pharmaceutical Research - 相似文献
66.
空管药物疗法治疗牙髓病和根尖周病疗效观察 总被引:1,自引:0,他引:1
用SMTD复合药物对牙髓病和根尖周病实施空管药物疗法。78例103颗获得完整随访资料患牙经两年观察,92.2%治愈率。文章介绍了治疗方法,讨论了空管药物疗法的愈合机理、优点、失败原因及其预防措施。 相似文献
67.
68.
Dieter Ulrich Preiss Delawer Abdullah Bruno Eberspcher Karlheinz Wilhelm 《Thrombosis research》1992,65(6):677-686
In a prospective clinical trial the risk of infection after application of virus inactivated antithrombin III concentrate ANTITHROMBIN III IMMUNO (AT III) was investigated in patients undergoing cardiovascular surgery. The study was conducted according to the recommendations of the International Committee on Thrombosis and Hemostasis (ICTH), with the exception that most patients required additional blood products as well as AT III.
Twenty-seven patients were eligible to test for the risk of acquiring hepatitis B. Twenty-six patients could be evaluated in terms of hepatitis NANB transmission considering ALT-levels whereas 20 patients could be tested for anti-HCV one year after surgery. Samples from 78 patients could be monitored for anti-HIV-1. None of these patients showed any signs of infection. AT III IMMUNO seems to be an antithrombin III concentrate with low or absent infectivity. 相似文献
69.
Rapidly progressive parkinsonism in a self-reported user of ecstasy and other drugs. 总被引:2,自引:0,他引:2
A 38-year-old man developed parkinsonism that progressed to Hoehn and Yahr stage 5 within 4 years of onset. Response to ropinirole deteriorated, levodopa was not tolerated, and subthalamic nucleus stimulation has provided only partial relief of symptoms. He reported heavy use of Ecstasy through most of his twenties and thirties. His neurological problems may be unrelated to his drug use, but it is also possible they represent an idiosyncratic reaction. 相似文献
70.
Mono- or Polypharmacotherapy in Institutionalized Epileptic Children with Severe Mental Retardation?
ABSTRACT. Nine severely mentally retarded patients with severe epilepsy who were living in an institution were studied during a three-year period by a multi-disciplinary team. A seizure rate serum level chart was made for each patient. It served as the basis for monthly discussions in the team about medication changes. Drug plasma concentrations were monitored monthly. Statistical comparisons between seizure frequency on different drug regimens were made by χ2 test. Withdrawal of all medication was possible in one case and reduction to monotherapy in two cases. In the remainder of the patients a combination of two or three anticonvulsants gave the best clinical effect. We thus found polypharmacotherapy necessary for some severely retarded patients with epilepsy. Our multidisciplinary approach and chart monitoring system has many advantages and is valuable for the medical care and drug treatment of this patient category. 相似文献