全文获取类型
收费全文 | 20526篇 |
免费 | 1458篇 |
国内免费 | 473篇 |
专业分类
耳鼻咽喉 | 780篇 |
儿科学 | 699篇 |
妇产科学 | 302篇 |
基础医学 | 1699篇 |
口腔科学 | 3772篇 |
临床医学 | 1440篇 |
内科学 | 1263篇 |
皮肤病学 | 218篇 |
神经病学 | 914篇 |
特种医学 | 1239篇 |
外国民族医学 | 5篇 |
外科学 | 2721篇 |
综合类 | 2522篇 |
现状与发展 | 3篇 |
预防医学 | 433篇 |
眼科学 | 285篇 |
药学 | 913篇 |
13篇 | |
中国医学 | 174篇 |
肿瘤学 | 3062篇 |
出版年
2024年 | 37篇 |
2023年 | 343篇 |
2022年 | 600篇 |
2021年 | 754篇 |
2020年 | 735篇 |
2019年 | 680篇 |
2018年 | 606篇 |
2017年 | 607篇 |
2016年 | 730篇 |
2015年 | 740篇 |
2014年 | 1282篇 |
2013年 | 1315篇 |
2012年 | 1160篇 |
2011年 | 1164篇 |
2010年 | 937篇 |
2009年 | 947篇 |
2008年 | 977篇 |
2007年 | 981篇 |
2006年 | 929篇 |
2005年 | 790篇 |
2004年 | 653篇 |
2003年 | 519篇 |
2002年 | 467篇 |
2001年 | 392篇 |
2000年 | 349篇 |
1999年 | 316篇 |
1998年 | 343篇 |
1997年 | 292篇 |
1996年 | 266篇 |
1995年 | 244篇 |
1994年 | 272篇 |
1993年 | 194篇 |
1992年 | 187篇 |
1991年 | 174篇 |
1990年 | 154篇 |
1989年 | 138篇 |
1988年 | 139篇 |
1987年 | 107篇 |
1986年 | 117篇 |
1985年 | 148篇 |
1984年 | 115篇 |
1983年 | 69篇 |
1982年 | 85篇 |
1981年 | 101篇 |
1980年 | 84篇 |
1979年 | 61篇 |
1978年 | 53篇 |
1977年 | 45篇 |
1976年 | 34篇 |
1974年 | 5篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
71.
报告手术治疗腰椎间盘突出症合并退行性腰椎管狭窄症104例。术后随访90例,随诊时6个月~6年。优良率86.5%,无腰椎不稳和腰椎滑脱等并发症。为获得优良效果,作者强调在处理椎间盘突出的同时必须彻底解除侧隐窝及神经根管,黄韧带肥厚对神经根的压迫,才能彻底根除症状 相似文献
72.
Ken Kodama Osamu Doi Masahiko Higashiyama Hideoki Yokouchi Keiko Kuriyama 《Surgery today》1997,27(12):1123-1130
Between 1969 and 1995, 180 patients underwent complete resection of lung metastases during initial thoracotomy at our institute,
involving the resection of 917 pulmonary nodules at 202 thoracotomy procedures. The overall postmetastasectomy 5- and 10-year
survival rates were 46% and 30%, respectively. Of 111 patients who underwent segmentectomy and/or local excision, 57 had multiple
metastases, 39 of whom were treated by Nd:YAG laser after 1986, and 18 by conventional procedures before 1985. The average
number of tumors resected per patient treated with the Nd:YAG laser was significantly greater than that of those treated with
conventional procedures. However, the survival curve of the laser-treated group was better than that of the laser-nontreated
group. Moreover, slightly better survival was achieved in patients operated on after 1992 compared with those operated on
before 1991. We conclude that the laser technique may be warranted to afford complete resection of metastases and adequate
pulmonary reservation in combination with a selected approach for thoracotomy under the exact detection of tumor localization
using the most recent high-quality computed tomography (CT) scan. Furthermore, a one-stage operation to control synchronous
intra- and extrapulmonary malignamcies may become a possible option in combination with selective adjunctive therapy. 相似文献
73.
随机选择经长期随访证实的滤泡性甲状腺癌和腺瘤各10例,正常甲状腺组织5例作为对照。按Ploton的染色方法和Crocker推荐的计数方法分别计算三组每例各50个细胞的Ag-NOR嗜银颗粒平均数,再算出三组各自的AgNOR均数,经统计学检验三者有极显著性差异。可望成为甲状腺滤泡性肿瘤良恶鉴别的一项辅助指标。 相似文献
74.
Laparoscopic cryosurgery for hepatic tumors 总被引:2,自引:0,他引:2
Background: Hepatic cryosurgery has been shown to be a safe technique that may be well suited to a laparoscopic approach.
Methods: The technical feasibility and safety of laparoscopic cryosurgery was explored first in a pig model. Thereafter we performed
the first successful case of laparoscopic hepatic cryosurgery at our institution.
Results: In the animal model, we found that it is possible to safely identify, target, and cryoablate specific lesions in the liver.
Temperature in the peritoneal cavity remained above 35°C, and pathologic examination of the abdominal wall around the cryoprobe
site revealed no damage. We also successfully treated a 62-year-old man with a metastatic colorectal carcinoma deep in the
right lobe of the liver with laparoscopic cryosurgery using a transpleural approach.
Conclusion: We conclude that laparoscopic cryosurgery is feasible for lesions anywhere in the liver. For lesions high on the dome of
the liver, a transpleural approach may provide better access. 相似文献
75.
76.
椎管内肿瘤显微外科手术治疗 总被引:2,自引:0,他引:2
本组收集自2000年2月至2005年12月我院椎管内肿瘤患者64例,通过显微手术治疗,取得满意效果,报告如下。一、资料与方法1.一般资料:在64例椎管内肿瘤中男性36例,女性28例;年龄最小12岁,最大76岁,平均38岁。2.主要症状与体征:(1)疼痛:疼痛为常见的首发症状,共有18例。常表现为根性疼痛,有时可误诊为肋间神经痛或坐骨神经痛。(2)感觉障碍:常见,共有54例。有不同程度的感觉障碍,表现为有感觉障碍平面并常伴有麻木或束带感。髓内肿瘤则常表现有不同程度的节段性感觉障碍,感觉障碍平面与脊髓肿瘤所在部位相关。(3)运动障碍:有52例入院时在肿瘤压迫… 相似文献
77.
Complications associated with maxillary nerve block anaesthesia via the greater palatine canal 总被引:2,自引:0,他引:2
Anthony M. Sved John D. Wong Head Peter Donkor James Horan Leesa Rix Justin Curtin and Russell Vickers 《Australian dental journal》1992,37(5):340-345
This paper documents the type, frequency and duration of complications associated with regional anaesthesia of the maxillary nerve via the greater palatine canal in a series of 101 patients treated in the Oral Surgery Department, United Dental Hospital of Sydney. 相似文献
78.
Rauhut Friedhelm Reinhardt Volker Budach Volker Wiedemayer Helmut Nau Heinz-Eugen 《Neurosurgical review》1989,12(4):309-313
Ten patients suffering from intramedullary pilocytic astrocytomas (WHO-classification: astrocytoma grade I) were investigated catamnesticly. Combined surgery and radiotherapy was performed. Seven patients received neutron irradiation postoperatively. In four cases the neurological symptoms were improved after follow-up periods ranging from 33 to 89 months. The three other patients died after 6 to 21 months. The autopsy findings of a 14 year old child are presented. Our results are compared with reports in the literature. In addition, long-term problems of the spinal column are discussed. It seems that the combined surgical and neutron therapy improves the prognosis of pencil gliomas. 相似文献
79.
不同地区冬凌草有效成分抗肿瘤作用研究 总被引:1,自引:0,他引:1
卢氏1号及信阳A,B都是从冬凌草[Rabdosia rubescens(Hemsi)]中提取出来的,均为新的二萜类抗肿瘤成分,实验证明:这三种成分对体外培养的艾氏腹水癌细胞具有较明显的细胞毒作用。对动物移植性肿瘤ECA,ARS,S_(180),HCA,HCS,P_(388),L_(1210),LLC及B_(16)均有较强的抗肿瘤作用(P<0.05)。对小鼠体液免疫(溶皿素方法),及细胞免疫(肿瘤相伴免疫方法)均无明显影响。急性毒性LD_(50)卢氏1号为69.5±6.7mg/kg,信阳冬凌草水剂为10.6±0.9g/kgip。 相似文献
80.