全文获取类型
收费全文 | 1030篇 |
免费 | 73篇 |
国内免费 | 28篇 |
专业分类
儿科学 | 61篇 |
妇产科学 | 14篇 |
基础医学 | 88篇 |
口腔科学 | 49篇 |
临床医学 | 170篇 |
内科学 | 242篇 |
皮肤病学 | 13篇 |
神经病学 | 23篇 |
特种医学 | 259篇 |
外科学 | 62篇 |
综合类 | 22篇 |
预防医学 | 35篇 |
眼科学 | 4篇 |
药学 | 49篇 |
肿瘤学 | 40篇 |
出版年
2022年 | 3篇 |
2021年 | 5篇 |
2020年 | 3篇 |
2019年 | 12篇 |
2018年 | 22篇 |
2017年 | 13篇 |
2016年 | 11篇 |
2015年 | 15篇 |
2014年 | 22篇 |
2013年 | 19篇 |
2012年 | 24篇 |
2011年 | 26篇 |
2010年 | 38篇 |
2009年 | 31篇 |
2008年 | 19篇 |
2007年 | 32篇 |
2006年 | 34篇 |
2005年 | 25篇 |
2004年 | 20篇 |
2003年 | 30篇 |
2002年 | 23篇 |
2001年 | 18篇 |
2000年 | 15篇 |
1999年 | 15篇 |
1998年 | 60篇 |
1997年 | 71篇 |
1996年 | 79篇 |
1995年 | 47篇 |
1994年 | 39篇 |
1993年 | 44篇 |
1992年 | 19篇 |
1991年 | 12篇 |
1990年 | 20篇 |
1989年 | 39篇 |
1988年 | 41篇 |
1987年 | 30篇 |
1986年 | 30篇 |
1985年 | 31篇 |
1984年 | 8篇 |
1983年 | 11篇 |
1982年 | 13篇 |
1981年 | 10篇 |
1980年 | 12篇 |
1979年 | 3篇 |
1978年 | 4篇 |
1977年 | 13篇 |
1976年 | 10篇 |
1975年 | 6篇 |
1966年 | 1篇 |
1950年 | 1篇 |
排序方式: 共有1131条查询结果,搜索用时 15 毫秒
91.
92.
93.
94.
95.
96.
97.
Thoracic wall involvement by Hodgkin disease and non-Hodgkin lymphoma: CT evaluation 总被引:6,自引:0,他引:6
Thoracic computed tomographic (CT) scans of 250 patients with newly diagnosed or recurrent lymphoma revealed thoracic wall involvement in 24 patients (11 with Hodgkin disease, 13 with non-Hodgkin lymphoma). Thoracic wall involvement occurred without contiguous mediastinal or parenchymal involvement in 17 patients. Of these, 13 patients had masses beneath the pectoralis muscles or within the breast, and four had masses arising from the ribs. Five additional patients had mediastinal masses with thymic involvement and parasternal extension through the thoracic wall. Pulmonary parenchymal lymphoma with thoracic wall invasion was noted in the remaining two patients. In five of nine patients receiving radiation therapy, treatment plans were modified by CT demonstration of thoracic wall lymphoma. 相似文献
98.
Williams DA Gendreau M Hufford MR Groner K Gracely RH Clauw DJ 《The Clinical journal of pain》2004,20(5):348-356
OBJECTIVE: This study was designed to compare 3 commonly used methodologies for assessing clinical pain during trials involving patients diagnosed with fibromyalgia syndrome. Baseline characteristics, characteristics over time, and compliance were evaluated for each of the methods. METHODS: Fourteen patients diagnosed with fibromyalgia syndrome were asked to monitor their symptoms of pain using 3 different strategies over a 12-week period: 1) real-time pain reports were collected on an electronic diary using randomly-scheduled audible prompts; 2) end-of-week reports asked patients to rate their mean pain over the past week on the electronic diary; and 3) monthly in-clinic reports asked patients to rate their mean pain for the week using a traditional paper and pencil diary. RESULTS: Significantly different baseline values were obtained for the 3 methods. Paper and pencil produced the highest values, and real-time pain reports produced the lowest baseline values. Pain ratings were more likely to reflect decreases in the 2 methods relying on recall than the real-time strategy. The average adherence with pain monitoring using the electronic diary was 85%, which was superior to the adherence for the recall measures completed during the clinic visits. CONCLUSION: Pain assessment methods relying on recall might contribute to an apparent improvement in clinical trials in the absence of an intervention; such an effect has been considered a "placebo response." Future clinical trials might consider using a real-time approach to pain assessment, which in this study appeared to mitigate against seeing improvement in the absence of an intervention and demonstrated higher levels of patient adherence. 相似文献
99.
McRedmond JP Mulvihill NT Kane M Burke B Aloul B Forde T Walsh M Fitzgerald DJ 《Irish journal of medical science》2004,173(4):204-210
Background Streptokinase resistance may cause suboptimal thrombolytic therapy.
Aim To develop a rapid latex-bead assay to detect streptokinase antibodies.
Methods Sera were obtained from 16 patients presenting with acute myocardial infarction (MI) before treatment with streptokinase
and 1 and 6 months post treatment, and from 100 controls. Sera were assayed for anti-streptokinase antibodies using a functional
streptokinase-neutralising assay.
Results Streptokinase-neutralising activity was low in controls (54±5U/ml) and patients prior to treatment (101±18), increasing to
2,110±823 and 1,017±169 at 1 and 6 months (mean±SEM). The latex assay had a sensitivity of 94% and a specificity of 93% for
detecting individuals with >350U/ml of streptokinase resistance, which is sufficient to neutralise the drug clinically.
Conclusions Estimation of streptokinase resistance using an enzyme immunoassay and a latex bead assay correlated well with serum neutralising
activity. This assay can rapidly identify patients who have a high level of streptokinase-neutralising activity. 相似文献
100.