全文获取类型
收费全文 | 159824篇 |
免费 | 8601篇 |
国内免费 | 218篇 |
专业分类
耳鼻咽喉 | 2589篇 |
儿科学 | 7080篇 |
妇产科学 | 5170篇 |
基础医学 | 21066篇 |
口腔科学 | 4982篇 |
临床医学 | 12147篇 |
内科学 | 31119篇 |
皮肤病学 | 4484篇 |
神经病学 | 12570篇 |
特种医学 | 6476篇 |
外国民族医学 | 32篇 |
外科学 | 26232篇 |
综合类 | 1780篇 |
一般理论 | 46篇 |
预防医学 | 8418篇 |
眼科学 | 4569篇 |
药学 | 10751篇 |
中国医学 | 503篇 |
肿瘤学 | 8629篇 |
出版年
2021年 | 1344篇 |
2020年 | 928篇 |
2019年 | 1442篇 |
2018年 | 2314篇 |
2017年 | 1803篇 |
2016年 | 2253篇 |
2015年 | 2270篇 |
2014年 | 2807篇 |
2013年 | 4373篇 |
2012年 | 6307篇 |
2011年 | 6919篇 |
2010年 | 3664篇 |
2009年 | 2981篇 |
2008年 | 6428篇 |
2007年 | 6987篇 |
2006年 | 6930篇 |
2005年 | 7092篇 |
2004年 | 6873篇 |
2003年 | 6412篇 |
2002年 | 6214篇 |
2001年 | 7832篇 |
2000年 | 7849篇 |
1999年 | 6383篇 |
1998年 | 1854篇 |
1997年 | 1750篇 |
1996年 | 1511篇 |
1995年 | 1351篇 |
1994年 | 1214篇 |
1993年 | 1230篇 |
1992年 | 3855篇 |
1991年 | 3657篇 |
1990年 | 3631篇 |
1989年 | 3411篇 |
1988年 | 3047篇 |
1987年 | 2940篇 |
1986年 | 2841篇 |
1985年 | 2657篇 |
1984年 | 1990篇 |
1983年 | 1630篇 |
1982年 | 974篇 |
1981年 | 953篇 |
1979年 | 1849篇 |
1978年 | 1369篇 |
1977年 | 1144篇 |
1976年 | 954篇 |
1975年 | 1188篇 |
1974年 | 1227篇 |
1973年 | 1214篇 |
1972年 | 1047篇 |
1971年 | 979篇 |
排序方式: 共有10000条查询结果,搜索用时 203 毫秒
1.
2.
Esin Benli Küçük Ercan Kaydok Kürsad Ramazan Zor Gamze Yıldırım Biçer 《Topics in stroke rehabilitation》2020,27(8):630-635
ABSTRACT Objective: Dry eye is reported to be associated with several neurological diseases. The aim of this study is to evaluate the patients with hemiplegia after stroke for dry eye and compare their results with a control group. Materials and methods: Forty-five patients with hemiplegia and 45 individuals as the control group were included in the study. Tear function tests (Schirmer and tear breakup time) and a dry eye questionnaire for dry eye symptoms (ocular surface disease index) were performed and the results of the two groups were compared. Results: Schirmer test results were significantly lower in the post-stroke hemiplegia group compared to the control group (11.3 ± 8.2 mm and 20.6 ± 11.6 mm, respectively, p < .001). Tear breakup time results were significantly lower in the post-stroke hemiplegia group compared to the control group (7.9 ± 3.1 s and 12.1 ± 4.3 s, respectively, p < .001). Ocular surface disease index scores were not significantly different between hemiplegia and control groups (21.6 ± 20.0 and 19.8 ± 13.9, respectively, p = .635). Schirmer scores lower than 10 mm (60% and 30%, p < .001) and tear breakup time results lower than 10 s (65.6% and 28.9%, p < .001) were also higher in the hemiplegia group compared to control group. Conclusion: We found lower Schirmer test and tear breakup time results and similar OSDI scores in hemiplegia patients compared to controls. Hemiplegia patients may have dry eye without typical symptoms. This should be taken into consideration in the follow-up and rehabilitation of post-stroke hemiplegia patients. 相似文献
3.
4.
Martin R. Späth Malte P. Bartram Nicolàs Palacio-Escat K. Johanna R. Hoyer Cedric Debes Fatih Demir Christina B. Schroeter Amrei M. Mandel Franziska Grundmann Giuliano Ciarimboli Andreas Beyer Jayachandran N. Kizhakkedathu Susanne Brodesser Heike Göbel Jan U. Becker Thomas Benzing Bernhard Schermer Martin Höhne Markus M. Rinschen 《Kidney international》2019,95(2):333-349
5.
6.
Sevim Turanli Nazan Bozdogan Hakan Mersin Ugur Berberoglu 《The Indian journal of surgery》2015,77(6):489-494
Helicobacter pylori has been associated with diverse pathologies of varying severity. We investigated the H. pylori infection status and its association with the pathologic features and clinical outcomes in stage III gastric cancer patients treated with adjuvant therapy after curative resection. Between 2004 and 2009, the records of 76 consecutive patients were retrospectively reviewed. H. pylori infection was confirmed by examination of pathological specimen. The relationship between H. pylori and the clinicopathological features was analyzed by Fisher exact test, Student’s t test, and Kaplan-Meier method. Of the 76 patients, 16 patients (21.1 %) were confirmed for H. pylori infection. The median age was 59 years. Twenty-three patients received chemotherapy and remainder received chemoradiotherapy. H. pylori status did not correlate with the clinicopathologic features. It was greater in non-neoplastic tissue than the tumor tissue (21.1 vs 7.9 %). Median follow-up was 21 months. During this period, 88.2 % patients had experienced tumor recurrence, and 85.5 % patients had died. Recurrence was observed in 87.5 % patients and in 88.3 % patients in H. pylori-positive and H. pylori-negative patients, respectively (P = 0.92). Disease-free survival was 28.4 ± 7.9 months and overall survival was 31.5 ± 7.4 months in H. pylori-positive patients compared with 28.3 ± 3.7 and 33.2 ± 3.4 months, respectively, in H. pylori-negative patients. H. pylori infection status did not have effect on the overall or disease-free survival (p = 0.85 and P = 0.86), respectively. H. pylori status might not be useful as a prognostic and predictive factor for clinical outcomes. 相似文献
7.
8.
9.
Claire Letournel François Babinet Bénédicte Allard Vincent Montecot 《Néphrologie & thérapeutique》2019,15(1):51-58
Objective
The “Centre Hospitalier Francois Dunan” is located on an isolated island and ensures patients care in hemodialysis thanks to telemedicine support. Many research studies have demonstrated the importance of hemodialysis fluids composition to reduce morbidity in patients on chronic hemodialysis. The aim of this study was to identify the risks inherent in the production of dialysis fluids in a particular context, in order to set up an improvement action plan to improve risk control on the production of dialysis fluids.Methods
The risk analysis was conducted with the FMECA methodology (Failure Mode, Effects and Criticality Analysis) by a multi professional work group. Three types of risk have been reviewed: technical risks that may impact the production of hemodialysis fluids, health risks linked with chemical composition and health risks due to microbiological contamination of hemodialysis fluids.Results
The work group, in close cooperation with the expert staff of the dialysis center providing telemedicine assistance, has developed an action plan in order to improve the control of the main risks brought to light by the risk analysis.Conclusion
The exhaustive analysis of the risks and their prioritisation have permitted to establish a relevant action plan in this improving quality of dialysis fluids approach. The risk control of dialysis fluids is necessary for the security of dialysis sessions for patients, even more when these sessions are realized by telemedicine in Saint-Pierre-et-Miquelon. 相似文献10.
Rafiye Ciftciler Haluk Demiroglu Yahya Buyukasık Elifcan Aladag Salih Aksu Ibrahim C. Haznedaroglu Nilgun Sayınalp Osman Ozcebe Umit Yavuz Malkan Hakan Goker 《Clinical Lymphoma, Myeloma & Leukemia》2019,19(3):177-182