全文获取类型
收费全文 | 411511篇 |
免费 | 21289篇 |
国内免费 | 14384篇 |
专业分类
耳鼻咽喉 | 3286篇 |
儿科学 | 9530篇 |
妇产科学 | 7811篇 |
基础医学 | 44081篇 |
口腔科学 | 5725篇 |
临床医学 | 42857篇 |
内科学 | 69576篇 |
皮肤病学 | 3456篇 |
神经病学 | 29488篇 |
特种医学 | 17282篇 |
外国民族医学 | 96篇 |
外科学 | 54666篇 |
综合类 | 35998篇 |
现状与发展 | 48篇 |
一般理论 | 45篇 |
预防医学 | 32772篇 |
眼科学 | 9354篇 |
药学 | 33266篇 |
164篇 | |
中国医学 | 11452篇 |
肿瘤学 | 36231篇 |
出版年
2024年 | 710篇 |
2023年 | 3490篇 |
2022年 | 8680篇 |
2021年 | 11421篇 |
2020年 | 8383篇 |
2019年 | 7601篇 |
2018年 | 29126篇 |
2017年 | 23750篇 |
2016年 | 25563篇 |
2015年 | 10931篇 |
2014年 | 13436篇 |
2013年 | 12579篇 |
2012年 | 24189篇 |
2011年 | 39522篇 |
2010年 | 29936篇 |
2009年 | 20534篇 |
2008年 | 31727篇 |
2007年 | 33977篇 |
2006年 | 12807篇 |
2005年 | 14494篇 |
2004年 | 11803篇 |
2003年 | 11817篇 |
2002年 | 8989篇 |
2001年 | 6238篇 |
2000年 | 6497篇 |
1999年 | 6558篇 |
1998年 | 3839篇 |
1997年 | 3863篇 |
1996年 | 2870篇 |
1995年 | 2676篇 |
1994年 | 2322篇 |
1993年 | 1551篇 |
1992年 | 2322篇 |
1991年 | 2075篇 |
1990年 | 1784篇 |
1989年 | 1528篇 |
1988年 | 1314篇 |
1987年 | 1214篇 |
1986年 | 962篇 |
1985年 | 776篇 |
1984年 | 509篇 |
1983年 | 401篇 |
1982年 | 249篇 |
1981年 | 201篇 |
1980年 | 230篇 |
1979年 | 245篇 |
1978年 | 149篇 |
1977年 | 115篇 |
1976年 | 105篇 |
1974年 | 135篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
合同制护士存在的问题分析与对策 总被引:1,自引:1,他引:0
科学技术飞速发展的今天,在知识经济市场与服务竞争的大潮中,每个行业都在寻求新的机遇,面对新的挑战,存在新的危机,合同制护士表现尤为突出,存在着工资收入低、工作压力大、工作稳定性差等问题。现就其现状作一分析,提出相应对策。1合同制护士的现状分析近年来,合同制一词在人们生活中已不再陌生,并逐渐被人们接受。合同制护士在医院的护理队伍中工资收入、职称晋升、医疗保险、福利待遇等方面均与正式在编护士有着很大的差异。由于近年来护理专业毕业生急剧增长,面对当前就业难的压力和激烈的竞争环境,她们相继到各大医院竞聘,而医院招工… 相似文献
82.
Nan-Fu Chen Yeou-Chih Wang Chiung-Chyi Shen Yee-Jee Jan Wen-Hsien Chen Ching-Hsiang Leu 《Journal of clinical neuroscience》2004,11(5):527-530
We report a case of calcified chronic encapsulated intracerebral haematoma (ICH) in a 29-year-old female who presented with progressive left sided weakness and intermittent seizures since childhood. The preoperative magnetic resonance (MR) imaging of the head initially suggested that a partially thrombosed aneurysm or vascular malformation was present. However, no vascular stain was found on the digital subtraction angiography (DSA) of both the carotid and vertebral arteries. The excised mass was histologically diagnosed as a chronic ICH. We traced the patient's medical history and found that at the age of one she sustained a head injury after a fall. So far, to our knowledge, no case of epilepsy secondary to a calcified chronic encapsulated ICH occurring 28 years after head injury has been reported. Calcified chronic encapsulated ICH concomitant with new bone formation within is even rarer. The possible pathogenesis of this case is discussed. 相似文献
83.
84.
Antegrade interlocking nailing of humeral shaft fractures 总被引:5,自引:0,他引:5
George Petsatodes Dimitrios Karataglis Pericles Papadopoulos John Christoforides John Gigis John Pournaras 《Journal of orthopaedic science》2004,9(3):247-252
The results of 39 humeral shaft fractures (37 patients) treated with antegrade locked nailing using a Russell–Taylor nail were reviewed. There were 30 acute fractures, 6 fractures malaligned in a hanging cast or brace, and 3 pathological fractures. Patient age ranged from 26 to 80 years (average, 59.7 years) and average follow-up was 25.7 months (range, 6–48 months). Fracture union was achieved in 92.3% of our cases, while shoulder function was excellent or good in 87.2% of cases. Antegrade locked nailing offers a dependable solution for the treatment of humeral shaft fractures, especially in polytrauma patients and cases of segmental or pathological fractures. Far less satisfactory results were obtained in comminuted fractures of the proximal third in the humerus, especially in osteoporotic patients, and we therefore advocate caution with the use of intramedullary nailing in this type of fracture. Certain technical aspects such as avoiding nailing the fracture in distraction, properly countersinking the tip of the nail, and achieving adequate fixation stability have been found to be of paramount importance to reduce the incidence of delayed union/non-union rate and to obtain better functional results from the shoulder joint. 相似文献
85.
86.
谈耳鼻喉科教学中多媒体技术的应用 总被引:3,自引:0,他引:3
多媒体教学技术应用于耳鼻喉科教学,具有直观性好、动态感强、信息量大等优点,能使教学信息直接、形象、具体、生动地展现给学生,让学生体会到学习的乐趣,是耳鼻喉科现代化教学的理想模式. 相似文献
87.
Daniel M. Herron 《Journal of gastrointestinal surgery》2004,8(4):406-407
Conclusion In the year 2003 there is no “one best bariatric operation” for every severely obese patient. The choice of operation must
be tailored to each individual patient’s needs and wishes. For the superobese patient, the patient diagnosed with intestinal
metaplasia of the stomach, and for those patients who do not wish to undergo the severe dietary restrictions imposed by the
RNY-GB, the BPD-DS is a valuable surgical option. 相似文献
88.
F Y Hsu C J Tung J C Chen Y L Wang H C Huang R G Zamenhof 《Applied radiation and isotopes》2004,61(5):881-885
In 1998, an epithermal neutron test beam was designed and constructed at the Tsing Hua Open-Pool Reactor (THOR) for the purpose of preliminary dosimetric experiments in boron neutron capture therapy (BNCT). A new epithermal neutron beam was designed at this facility, and is currently under construction, with clinical trials targeted in late 2004. Depth dose-rate distributions for the THOR BNCT test beam have been measured by means of activation foil and dual ion chamber techniques. Neutron and structure-induced gamma spectra measured at the test beam exit were configured into a source function for the Monte Carlo-based treatment planning code NCTPlan. Dose-rate scaling factors (DRSFs) were determined to normalize computationally derived dose-rate distributions with experimental measurements in corresponding mathematical and physical phantoms, and to thus enable accurate treatment planning using the NCTPlan code. A similar approach will be implemented in characterizing the new THOR epithermal beam in preparation for clinical studies. This paper reports the in-phantom calculated and experimental dosimetry comparisons and derived DRSFs obtained with the THOR test beam. 相似文献
89.
关木通引起慢性间质性肾炎7例报告 总被引:3,自引:0,他引:3
目的 观察关木通所致慢性肾损伤的临床和病理改变特点。方法 本组 7例中 ,男 5例 ,女 2例。 3例服关木通汤药 ,4例服含关木通成药。分析服用时间、累积总量与肾损害首发症状及症状出现时间、肾功能和肾病理改变的关系。结果 汤药组 :服药时间平均 3 3 3个月 ,累积总量平均 82 9 3 g ,首发症状为乏力 3例 ,夜尿增多 2例 ,平均时间为 8 3个月 ,Cr平均 40 2 μmol/L。肾病理 :3例均为重度寡细胞性肾间质纤维化 ,肾小管广泛萎缩。成药组 :服药时间平均 7 5个月 ,累积总量平均 13 6g ,乏力 3例 ,夜尿增多 1例 ,恶心呕吐、头痛头晕 1例 ,平均18 8个月 ,Cr 3 62 8μmol/L。肾病理为重度寡细胞性间质纤维化和灶状纤维化各 2例 ,肾小管灶状萎缩 3例 ,广泛萎缩 1例。结论 汤药组关木通积累大 ,发病时间早 ,肾病理改变重。提示关木通所致肾损其临床表现、病理改变与服用关木通时间、剂量相关。 相似文献
90.