全文获取类型
收费全文 | 47675篇 |
免费 | 4520篇 |
国内免费 | 3629篇 |
专业分类
耳鼻咽喉 | 298篇 |
儿科学 | 433篇 |
妇产科学 | 482篇 |
基础医学 | 5638篇 |
口腔科学 | 755篇 |
临床医学 | 6905篇 |
内科学 | 7470篇 |
皮肤病学 | 586篇 |
神经病学 | 2602篇 |
特种医学 | 1922篇 |
外国民族医学 | 23篇 |
外科学 | 4379篇 |
综合类 | 7708篇 |
现状与发展 | 15篇 |
一般理论 | 7篇 |
预防医学 | 2922篇 |
眼科学 | 1467篇 |
药学 | 5021篇 |
81篇 | |
中国医学 | 2840篇 |
肿瘤学 | 4270篇 |
出版年
2024年 | 152篇 |
2023年 | 857篇 |
2022年 | 2037篇 |
2021年 | 2617篇 |
2020年 | 1963篇 |
2019年 | 1650篇 |
2018年 | 1761篇 |
2017年 | 1513篇 |
2016年 | 1457篇 |
2015年 | 2169篇 |
2014年 | 2637篇 |
2013年 | 2337篇 |
2012年 | 3464篇 |
2011年 | 3886篇 |
2010年 | 2366篇 |
2009年 | 1851篇 |
2008年 | 2473篇 |
2007年 | 2546篇 |
2006年 | 2475篇 |
2005年 | 2569篇 |
2004年 | 1486篇 |
2003年 | 1332篇 |
2002年 | 1109篇 |
2001年 | 1101篇 |
2000年 | 1151篇 |
1999年 | 1212篇 |
1998年 | 790篇 |
1997年 | 803篇 |
1996年 | 619篇 |
1995年 | 569篇 |
1994年 | 514篇 |
1993年 | 300篇 |
1992年 | 378篇 |
1991年 | 309篇 |
1990年 | 282篇 |
1989年 | 242篇 |
1988年 | 230篇 |
1987年 | 208篇 |
1986年 | 154篇 |
1985年 | 110篇 |
1984年 | 50篇 |
1983年 | 38篇 |
1982年 | 19篇 |
1981年 | 12篇 |
1980年 | 13篇 |
1979年 | 12篇 |
1966年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
41.
Gerard J Molloy Derek W Johnston Chuan Gao Miles D Witham Joan M Gray Ishbel S Argo Allan D Struthers Marion E T McMurdo 《European journal of cardiovascular prevention and rehabilitation》2006,13(3):381-387
BACKGROUND: The impact of exercise programmes for heart failure on those close to the patient is largely unknown. We examined the effect of a hospital and home-based exercise intervention on burden, anxiety and depression of informal caregivers. DESIGN: The study was a randomized, controlled trial. Heart failure patients were randomized to a seated 12-week hospital-based exercise programme. Caregiver measures were gathered at baseline, 3 months later and 6 months following baseline. METHODS: Sixty caregivers (mean age 63.4 years, 65% female) of heart failure patients (n = 82, mean age 80.5 years, 44% female) participating in a trial of an exercise intervention were recruited. Caregiver burden, anxiety and depression were assessed. RESULTS: There were no differences in caregiver burden, depression or anxiety between the two groups of caregivers at baseline (caregiver burden, patient control 33.1 versus patient exercise 34.1; anxiety 4.1 versus 5.5; depression 2.8 versus 3.8). At 3 months there were no differences between caregivers in the two groups on outcomes. At 6-month follow-up caregivers of heart failure patients in the exercise group had burden scores that were significantly worse than the control group. There were no differences between the carers of exercise and control groups in anxiety and depression. Levels of anxiety and depression in the entire carer sample were marginally higher than reference values in a healthy non-clinical sample. CONCLUSION: The present exercise interventions for frail older patients did not benefit caregivers and was associated with an increase in caregiver burden. We suggest that future exercise interventions for heart failure patients should actively incorporate informal caregivers into research designs. 相似文献
42.
[目的]探讨颅脑损伤病人应用亚低温治疗仪时具体间隔多长时间翻身不发生压疮.[方法]随机选择45例颅脑损伤应用亚低温治疗的病人,采取3 h后开始翻身,侧卧位时每次均为1 h,以后平卧位时间每次逐渐递增1/2 h.[结果]在应用亚低温治疗期间除3例病人在不同时段内发生轻微紫色冻伤外,所有病例均未发生压疮,平均翻身间隔时间为11.31 h,应用单样本统计学处理,有统计学意义(t=8.867,P<0.005).[结论]颅脑损伤病人在使用亚低温治疗过程中翻身间隔时间可以延长至8 h不发生压疮. 相似文献
43.
Advanced age has been associated with a wide range of defects in both the innate and adaptive immune systems including diminished specific antibody responses that increase the risk of invasive pneumococcal disease (IPD) and limit the effectiveness of vaccines. However, the elderly are a heterogeneous group and measures of overall frailty may be a better indicator of disease susceptibility (or vaccine response) than chronological age alone. 相似文献
44.
45.
46.
47.
48.
We report a case of extragastrointestinal stromal tumor possibly originating from the prostate. The patient underwent radical prostatectomy because of no metastatic evidence. No recurrence and metastasis have been found during 14 months of follow up. To our knowledge, this may be the third such case published in a report in terms of pathological type. 相似文献
49.
50.
CT引导下颈侧入路舌咽神经毁损术 总被引:4,自引:1,他引:3
目的探讨CT引导下颈侧入路舌咽神经毁损术对舌咽神经痛及舌咽神经支配区顽固性疼痛的疗效. 方法 A组16例舌咽神经痛及B组12例舌咽神经支配区顽固性疼痛,采用CT引导经皮穿刺定位于茎突前缘第2颈椎水平,注入局麻药仅阻滞舌咽神经,注入7%苯酚甘油溶液0.8 ml. 结果 A组完全缓解率87.5%(14/16),总有效率100%(16/16),随访6个月无复发;B组完全缓解率50%(6/12),总有效率83.3%(10/12),随访6个月,复发6例(50.0%).2组均无严重并发症. 结论 CT介导下颈侧入路舌咽神经毁损术具有疗效可靠,定位准确,操作安全的特点,并有效减少严重并发症的发生. 相似文献