全文获取类型
收费全文 | 1094818篇 |
免费 | 74992篇 |
国内免费 | 3076篇 |
专业分类
耳鼻咽喉 | 15169篇 |
儿科学 | 34792篇 |
妇产科学 | 28823篇 |
基础医学 | 155870篇 |
口腔科学 | 29869篇 |
临床医学 | 97867篇 |
内科学 | 206828篇 |
皮肤病学 | 24630篇 |
神经病学 | 82464篇 |
特种医学 | 43703篇 |
外国民族医学 | 217篇 |
外科学 | 165236篇 |
综合类 | 25622篇 |
现状与发展 | 4篇 |
一般理论 | 264篇 |
预防医学 | 75839篇 |
眼科学 | 25242篇 |
药学 | 88512篇 |
30篇 | |
中国医学 | 3950篇 |
肿瘤学 | 67955篇 |
出版年
2021年 | 8699篇 |
2019年 | 8421篇 |
2018年 | 12016篇 |
2017年 | 9652篇 |
2016年 | 10762篇 |
2015年 | 12308篇 |
2014年 | 16540篇 |
2013年 | 23280篇 |
2012年 | 32199篇 |
2011年 | 34034篇 |
2010年 | 20028篇 |
2009年 | 18617篇 |
2008年 | 31046篇 |
2007年 | 33123篇 |
2006年 | 33820篇 |
2005年 | 31995篇 |
2004年 | 30434篇 |
2003年 | 29233篇 |
2002年 | 28121篇 |
2001年 | 60484篇 |
2000年 | 62013篇 |
1999年 | 51463篇 |
1998年 | 12811篇 |
1997年 | 11311篇 |
1996年 | 11239篇 |
1995年 | 10543篇 |
1994年 | 9555篇 |
1993年 | 8974篇 |
1992年 | 37927篇 |
1991年 | 36404篇 |
1990年 | 35834篇 |
1989年 | 34377篇 |
1988年 | 30940篇 |
1987年 | 30068篇 |
1986年 | 28276篇 |
1985年 | 26486篇 |
1984年 | 19224篇 |
1983年 | 16139篇 |
1982年 | 8840篇 |
1979年 | 17041篇 |
1978年 | 11404篇 |
1977年 | 10229篇 |
1976年 | 8837篇 |
1975年 | 10068篇 |
1974年 | 11651篇 |
1973年 | 11273篇 |
1972年 | 10754篇 |
1971年 | 10092篇 |
1970年 | 9252篇 |
1969年 | 8938篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
2.
Hassen Lena M. Albarrak Rana A. Albahlal Reem A. Alsaqabi Dimah K. Hassen Ikhlass M. Daghestani Maha H. Alqurtas Eman M. Alkhalaf Abdulaziz T. Bedaiwi Mohammed K. Omair Mohammed A. Almaghlouth Ibrahim A. 《Quality of life research》2022,31(11):3229-3239
Quality of Life Research - The COVID-19 pandemic might add to the stressors experienced by people living with rheumatic diseases. This study aimed to examine rheumatic patients’ functional... 相似文献
3.
Molnár B. Aroca S. Dobos A. Orbán K. Szabó J. Windisch P. Stähli A. Sculean A. 《Clinical oral investigations》2022,26(12):7135-7142
Clinical Oral Investigations - To evaluate t he long-term outcomes following treatment of RT 1 multiple adjacent gingival recessions (MAGR) using the modified coronally advanced tunnel (MCAT) with... 相似文献
4.
5.
6.
7.
Depeng Meng Yichen Meng Bingyang Li Guigang Zeng Bin Zhang Chunlin Hou Haodong Lin Yueping Ouyang 《Journal of orthopaedic science》2021,26(3):409-414
BackgroundComminuted patellar fractures are not rare, and the ideal treatment method remains controversial. The present study was conducted to evaluate effects and compare complications of two different methods used to treat comminuted patellar fractures.MethodsFrom March 2010 to August 2016, 102 cases of 34-C2 or 34-C3 comminuted patellar fractures were treated at our hospital, wherein patients received two different treatments: titanium cable tension band with cerclage method (group A) and intrafragmentary screws with X-shaped plating technique (group B). At follow-ups, articular step-off, range of motion (ROM), Lysholm scores, time of union, and complications were recorded and analyzed. Radiographic and clinical data as well as rate of complications were statistically analyzed.ResultsIn total, 87 patients were included in the final analysis (n = 47 in group A and n = 40 in group B). No significant differences were noted in terms of cost of implant, age, gender, rate of 34-C3 fractures, rate of layered inferior pole fractures, postoperative articular step-off and union time. At 2-year follow-up, average Lysholm scores, ROM and rate of complications were (89.0 ± 4.5), (122°±12°) and (27.7%) in group A and (90.2 ± 3.9), (124°±11°) and (17.5%) in group B, respectively, with no significant differences (p > 0.05). The mean time of surgery in group B was shorter than that in group A with significant difference (p < 0.05).ConclusionsTreatment using the intrafragmentary screws and plate method for amenable comminuted patellar fractures achieved similar complication rate and favorable functional outcomes at the 2-year follow-up, which was comparable to the titanium cable tension band with cerclage method. Thus, the intrafragmentary screws and plate method is effective, safe and convenient for 34-C2/C3 comminuted patellar fractures, especially appropriate for patients with layered fragments. 相似文献
8.
9.
Comprehensive evidence regarding the treatment of non-anaemic iron deficiency in patients undergoing valvular heart surgery is lacking. This study aimed to investigate the association between non-anaemic iron deficiency and postoperative outcomes in these patients. We retrospectively analysed 321 patients of which 180 (56%) had iron deficiency (defined as serum ferritin < 100 ng.ml-1 or < 300 ng.ml-1 with transferrin saturation < 20%). While the iron-deficient group had lower pre-operative haemoglobin levels than the non-iron deficient group (median (IQR [range]) 134 (127–141 [120–172]) g.l-1, 143 (133–150 [120–179]) g.l-1, p = 0.001), there was no between-group difference in allogeneic red blood cell transfusion. Median (IQR [range]) days alive and out of hospital at postoperative day 90 was 1 day shorter in the iron-deficient group (80 (77–82 [9–85]) days vs. 81 (79–83 [0–85]) days, p = 0.026). In multivariable analysis, only cardiopulmonary bypass duration (p = 0.032) and intra-operative allogeneic red blood cell transfusion (p = 0.011) were significantly associated with reduced days alive and out of hospital at postoperative day 90. Iron deficiency did not exert any adverse influence on secondary outcomes except length of hospital stay. Our findings indicate that non-anaemic iron deficiency alone is not associated with adverse effects in patients undergoing valvular heart surgery when it does not translate into an increased risk of allogeneic transfusion. 相似文献
10.