全文获取类型
收费全文 | 353326篇 |
免费 | 18179篇 |
国内免费 | 11796篇 |
专业分类
耳鼻咽喉 | 2744篇 |
儿科学 | 8440篇 |
妇产科学 | 5390篇 |
基础医学 | 37810篇 |
口腔科学 | 4777篇 |
临床医学 | 35998篇 |
内科学 | 56781篇 |
皮肤病学 | 2844篇 |
神经病学 | 25534篇 |
特种医学 | 15244篇 |
外国民族医学 | 97篇 |
外科学 | 46899篇 |
综合类 | 31627篇 |
现状与发展 | 39篇 |
一般理论 | 23篇 |
预防医学 | 30010篇 |
眼科学 | 7452篇 |
药学 | 28774篇 |
190篇 | |
中国医学 | 11492篇 |
肿瘤学 | 31136篇 |
出版年
2024年 | 734篇 |
2023年 | 2985篇 |
2022年 | 7790篇 |
2021年 | 9793篇 |
2020年 | 7351篇 |
2019年 | 6309篇 |
2018年 | 27925篇 |
2017年 | 22978篇 |
2016年 | 24716篇 |
2015年 | 9577篇 |
2014年 | 11337篇 |
2013年 | 10490篇 |
2012年 | 20986篇 |
2011年 | 35958篇 |
2010年 | 28236篇 |
2009年 | 18825篇 |
2008年 | 29206篇 |
2007年 | 30865篇 |
2006年 | 9582篇 |
2005年 | 10936篇 |
2004年 | 8928篇 |
2003年 | 9364篇 |
2002年 | 6662篇 |
2001年 | 3849篇 |
2000年 | 4188篇 |
1999年 | 3999篇 |
1998年 | 2475篇 |
1997年 | 2535篇 |
1996年 | 1863篇 |
1995年 | 1826篇 |
1994年 | 1603篇 |
1993年 | 961篇 |
1992年 | 1313篇 |
1991年 | 1196篇 |
1990年 | 1015篇 |
1989年 | 915篇 |
1988年 | 811篇 |
1987年 | 660篇 |
1986年 | 479篇 |
1985年 | 424篇 |
1984年 | 208篇 |
1983年 | 182篇 |
1982年 | 117篇 |
1981年 | 123篇 |
1980年 | 118篇 |
1979年 | 110篇 |
1978年 | 60篇 |
1974年 | 63篇 |
1938年 | 60篇 |
1932年 | 57篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
61.
62.
63.
Pilar Nicolás 《Hereditary cancer in clinical practice》2007,5(3):144-152
The specific characteristics of genetic data lead to ethical-legal conflicts in the framework of genetic diagnosis. Several international organisations, including UNESCO and the Council of Europe, have enacted rules referring to the use of genetic information. This paper discusses possible legal and ethical criteria that could be used in genetic testing. 相似文献
64.
静脉药物配制中心安全管理实践 总被引:1,自引:0,他引:1
静脉药物配制中心(PIVAS)是为保证病人的输液质量而对输液进行集中管理、集中配制的新形式。它打破了传统的在开放条件下进行药物配制的工作流程,使操作人员在局部百级洁净区严格按照无菌配制技术集中配制药物,可以防止细菌和微粒的污染,为病人提供无菌、安全、高效的药品,并可减少由于输液反应而引发的医疗纠纷;通过购买大包装的药品,可以降低药晶价格、减少药品浪费、降低医疗成本;临床护士用于药品配制的时间大大缩短,提高了护理质量。虽然PIVAS在医院工作中受到欢迎,但由于运行环节较多,且在我院启用的时间不长,还是一项不成熟的服务模式,我们也发现一些尚待提高和解决的问题。针对存在的安全隐患,制订了一系列防范措施,经过半年多的实践,在实施过程中运行良好。现总结如下。 相似文献
65.
OBJECTIVES: To explore the morphological and functional findings of transvaginal sonography (TVS) in the diagnosis and management of distal ureteral calculi. METHODS: We retrospectively reviewed the imaging studies in seven cases of distal ureteral calculi (study group) and 20 cases of female volunteers without urinary tract infection (control group). All 27 patients had undergone TVS for assessment of the lower urinary tract. The variables measured on ultrasound included the presence or absence of distal ureteral calculi, the size and location of a calculus if present, the presence or absence of the ureter jet phenomenon, morphological changes of the ureteral papilla and adjoining tissue, and the height of the ureteral papilla, as well as vascular changes seen on Doppler imaging. RESULTS: In the controls, 80% of the ureteral papillae were triangular and 20% trapezoidal. The average (+/-SD) height of the ureteral papillae was 3.5 +/- 0.7 mm on the right and 3.6 +/- 0.9 mm on the left. There was no statistically significant difference between the heights of the right and left papillae (P = 0.619). In the study group, echogenic stones were identified in all seven patients and a hypoechogenic tubular structure connected to the involved papilla was identified in 6/7 patients. The average height of the involved papilla was 6.7 +/- 1.6 mm. Ureteric jets were visible in all patients in both the study and control groups. CONCLUSION: In patients with distal ureteral calculi, TVS provides a rapid, non-invasive and repeatable means of assessing the morphology and function of the distal ureter. 相似文献
66.
67.
Lin Bo Wang Jian Guo Shen Li Feng Dong Chao Yang Xu Wen Jun Chen Shu Duo Xie Xiang Yang Song Ning Dai Xiao Ming Yuan 《Journal of gastrointestinal surgery》2008,12(8):1359-1363
We previously reported that lymphatic mapping using isosulfan blue can be used to identify sentinel nodes (SNs). This study
was undertaken to evaluate the feasibility of using the SN technique in treating early gastric cancer and to explore its usefulness
for minimal invasive surgery. Twenty-three patients with early gastric cancer who underwent SN biopsy were retrospectively
evaluated. Based on SN evaluation, individualized surgery was performed in five patients with T1N0M0 gastric cancer. When
pathological examination of frozen sections revealed metastasis in SNs, we performed a standard D2 gastrectomy. Laparoscopic
local resection was applied when the SN biopsy was negative. Our results showed that the success rate with SN biopsy in early
gastric cancer was 100%, as were the accuracy, sensitivity, and specificity. All five patients with early gastric cancer had
SNs negative for metastases both by frozen section and by postoperative pathology. Thus, all these patients underwent laparoscopic
local resection without extended lymphadenectomy. We conclude that SN biopsy is a useful tool to individualize the operative
procedure, and laparoscopic local resection can be safely performed using SN guidance in selected patients with early gastric
cancer. 相似文献
68.
Sergio Barroilhet Adrián Cano-Prous Salvador Cervera-Enguix Maria João Forjaz Francisco Guillén-Grima 《Social psychiatry and psychiatric epidemiology》2009,44(12):1051-1065
Introduction
This paper presents the results of a study on the psychometric properties of an authorized Spanish version of the McMaster Family Assessment Device, a self-report measure of family functioning. 相似文献69.
100例性病患者心理健康状况调查分析 总被引:3,自引:1,他引:2
目的:探讨性病患者的心理健康状况,为临床治疗和护理提供依据。方法:采用症状自评量表(SCL-90)对100例性病患者的心理健康状况进行测验。结果:100例性病患者SCL-90检测的阳性率为51%,阳性样本因子分居前的是敌对、强迫症状、抑郁、人际敏感。结论:性病患者广泛存在的心理问题,在药用治疗的同时应注意心理方面的治疗和疏导。 相似文献
70.