首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1560篇
  免费   52篇
  国内免费   8篇
耳鼻咽喉   49篇
儿科学   83篇
妇产科学   48篇
基础医学   100篇
口腔科学   86篇
临床医学   80篇
内科学   240篇
皮肤病学   20篇
神经病学   126篇
特种医学   35篇
外科学   407篇
综合类   15篇
预防医学   45篇
眼科学   106篇
药学   51篇
肿瘤学   129篇
  2025年   1篇
  2024年   4篇
  2023年   9篇
  2022年   24篇
  2021年   39篇
  2020年   29篇
  2019年   22篇
  2018年   32篇
  2017年   32篇
  2016年   68篇
  2015年   66篇
  2014年   81篇
  2013年   92篇
  2012年   123篇
  2011年   100篇
  2010年   52篇
  2009年   42篇
  2008年   116篇
  2007年   120篇
  2006年   125篇
  2005年   107篇
  2004年   108篇
  2003年   95篇
  2002年   63篇
  2001年   11篇
  2000年   9篇
  1999年   6篇
  1998年   2篇
  1997年   3篇
  1996年   8篇
  1995年   5篇
  1994年   8篇
  1993年   3篇
  1992年   1篇
  1990年   1篇
  1989年   2篇
  1988年   1篇
  1987年   1篇
  1986年   2篇
  1985年   1篇
  1984年   1篇
  1982年   1篇
  1974年   1篇
  1970年   1篇
  1969年   1篇
  1961年   1篇
排序方式: 共有1620条查询结果,搜索用时 15 毫秒
991.
992.
993.
994.
995.
We report a case of child-onset Kawasaki disease that presented as a prolonged fever and manifested with coronary aneurysms and peripheral gangrene of the lower limbs. Therapy with intravenous immunoglobulins, corticosteroids, aspirin, anticoagulants, and ilomedine, a prostacyclin analogue, resulted in rapid improvement in the patient's condition without extremity loss. Those treating patients with Kawasaki disease must be aware of possible vascular ischemia in the disease process that is reversible by early intervention treatments, including the use of a prostacycline analogue, that improve quality of life.  相似文献   
996.

Purpose  

The infection of bone that contains bone marrow called osteomyelitis, and is caused by different microorganisms. In this study, we aimed to determine the diagnostic value and accuracy of cultures of material from a sinus track compared with those of cultures of bone specimens that have been controversial.  相似文献   
997.
Malignant peripheral nerve sheath tumors (MPNSTs) are uncommon in children and adolescents but occur more frequently in NF1 patients. Angiosarcomatous differentiation in MPNSTs is a rare entity with poor prognosis. We report on a 13-year-old boy with intrathoracic angiosarcoma arising in MPNST associated with NF1.  相似文献   
998.
BACKGROUND: Computed tomography-guided high-level percutaneous cordotomy has been used unilaterally or bilaterally for the treatment of localized intractable pain in malignancies. CASE DESCRIPTION: A 57-year-old man was admitted to the hospital with the complaint of intractable pain involving the left side of the chest, axillary region, and shoulder. He was operated for small cell lung cancer on the left side in December 2003 and received radiotherapy and chemotherapy. His neurological examination was normal. Magnetic resonance imaging of the thorax revealed contrast-enhancing lesions on the left side extending to mediastinum and pleura. His pain was relieved completely after the first cordotomy procedure, and he was discharged from the hospital on the second postoperative day. The patient was readmitted to the hospital with the complaint of severe unilateral chest pain like the initial pain on the right side 4 days after cordotomy. The CT-guided bilateral high-level percutaneous cordotomy was performed with a 15-day interval. CONCLUSION: The CT-guided bilateral high-level percutaneous cordotomy can be used in the treatment of intractable upper trunk pain in patients with cancer without pulmonary dysfunction.  相似文献   
999.
Background: Activity of tamoxifen as a salvage therapy in patients with advanced epithelial ovarian cancer was evaluated by a number of studies. In this study, we evaluated efficacy of tamoxifen in our patients with platinum-resistant epithelial ovarian carcinoma. Patients and Methods: A retrospective analysis was conducted of patients who received tamoxifen at a dose 20 mg twice daily for the treatment of advanced epithelial ovarian cancer. Results: Twenty-nine eligible patients were included to the study. There were 1 (3%) complete response, 2 (7%) partial response, 6 (21%) stable disease, and 20 (69%) progressive disease. All patients were progressed after initiation of tamoxifen. Median progression-free survival was 4 mo (95% CI: 2.98–5.02). Disease progression of 19 (65%) patients were shown within the first 6 mo after initiation of tamoxifen. Progression-free survival was between 6 and 12 mo for 7 (24%) patients and ≥ 12 mo for 3 (10%) patients. The median survival after initiation of tamoxifen was 15 mo (95% CI: 7.2–22.8). No toxicity attributable to tamoxifen was seen in any of the patients. The only independent prognostic factor that had a significant predictive value for progression-free survival was the response to tamoxifen treatment (p=0.043, hazard ratio: 0.12, 95% CI: 0.01–0.94). Conclusion: Considering minimal side effects and ability to cause objective responses, there is a place for tamoxifen in treatment of patients with platinum-resistant ovarian cancer. A phase III trial is required to confirm the value of the drug in patients presenting these clinical settings.  相似文献   
1000.
The objective of this study is to assess the efficacy of an alpha-1 adrenergic receptor blocking agent on the spontaneous passage of proximal ureteral calculi ≤10 mm. 92 patients having single radio-opaque proximal ureteral stone ≤10 mm were randomized into two groups. Group 1 patients (n = 50) were followed with classical conservative approach and patients in Group 2 (n = 42) additionally received tamsulosin, 0.4 mg/day during 4 weeks follow-up. The stone passage rates, stone expulsion time, VAS score, change in colic episodes, and hospital re-admission rates for colicky pain were compared. The patients were furthermore stratified according to stone diameters <5 and 5–10 mm. The data of these subgroups were also compared. Stone expulsion rates showed statistically significant difference between tamsulosin receivers and non-receivers (35.7 vs 30%, p = 0.04). Time to stone expulsion period was also shortened in those receiving tamsulosin (8.4 ± 3.3 vs 11.6 ± 4.1 days, p = 0.015). Likewise, the mean VAS score and renal colic episodes during follow-up period were significantly diminished in Group 2 patients (4.5 ± 2.3 vs 8.8 ± 2.9, p < 0.01 and 66.6 vs 36%, p = 0.001, respectively). Among the stones <5 mm, tamsulosin receiving patients had higher spontaneous passage rate (71.4 vs 50%, p < 0.001). The prominent effect of tamsulosin on the 5–10 mm stones was the relocation of the stones to a more distal part of ureter (39.3 vs 18.7%, p = 0.001). Administration of tamsulosin in the medical management of proximal ureteral calculi can facilitate the spontaneous passage rate in the stone <5 mm and the relocation of the stones between 5 and 10 mm to more distal part of the ureter.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号