全文获取类型
收费全文 | 270292篇 |
免费 | 23238篇 |
国内免费 | 16342篇 |
专业分类
耳鼻咽喉 | 2378篇 |
儿科学 | 3349篇 |
妇产科学 | 5060篇 |
基础医学 | 31122篇 |
口腔科学 | 4645篇 |
临床医学 | 34650篇 |
内科学 | 43619篇 |
皮肤病学 | 3077篇 |
神经病学 | 14894篇 |
特种医学 | 9542篇 |
外国民族医学 | 111篇 |
外科学 | 29189篇 |
综合类 | 39984篇 |
现状与发展 | 58篇 |
一般理论 | 45篇 |
预防医学 | 17308篇 |
眼科学 | 7464篇 |
药学 | 27427篇 |
211篇 | |
中国医学 | 12961篇 |
肿瘤学 | 22778篇 |
出版年
2024年 | 793篇 |
2023年 | 3921篇 |
2022年 | 9941篇 |
2021年 | 13172篇 |
2020年 | 9599篇 |
2019年 | 8492篇 |
2018年 | 9052篇 |
2017年 | 7956篇 |
2016年 | 7556篇 |
2015年 | 11490篇 |
2014年 | 14422篇 |
2013年 | 13487篇 |
2012年 | 19898篇 |
2011年 | 21634篇 |
2010年 | 13424篇 |
2009年 | 10825篇 |
2008年 | 14271篇 |
2007年 | 14238篇 |
2006年 | 13766篇 |
2005年 | 13566篇 |
2004年 | 9542篇 |
2003年 | 8682篇 |
2002年 | 7408篇 |
2001年 | 6686篇 |
2000年 | 6623篇 |
1999年 | 6910篇 |
1998年 | 3905篇 |
1997年 | 3967篇 |
1996年 | 2999篇 |
1995年 | 2770篇 |
1994年 | 2384篇 |
1993年 | 1578篇 |
1992年 | 2394篇 |
1991年 | 2097篇 |
1990年 | 1739篇 |
1989年 | 1515篇 |
1988年 | 1333篇 |
1987年 | 1236篇 |
1986年 | 986篇 |
1985年 | 779篇 |
1984年 | 504篇 |
1983年 | 393篇 |
1982年 | 228篇 |
1981年 | 203篇 |
1980年 | 194篇 |
1979年 | 245篇 |
1978年 | 141篇 |
1977年 | 112篇 |
1976年 | 97篇 |
1974年 | 116篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
81.
A. Varkey N. C. Tan R. Girotto W. C. Tang Y. T. Liu H. C. Chen 《ANZ journal of surgery》2007,77(Z1):A62-A62
Purpose Post operative monitoring is crucial for the success of microsurgical free tissue transfer. Sophisticated and expensive methods are available for monitoring. We propose a novel technique using digital photography and the internet as a reliable and cost effective method to monitor free tissue transfers. Methods 163 micro‐vascular procedures were monitored using this technique over 8 months. Serial photographs taken to show flap color. Capillary refill time, pin prick‐ bleed time and color and hand held Doppler signal was recorded in the movie mode of a standard 5 mega pixel camera with duration of 15 seconds. Data was sent to the surgeon at regular intervals and or as deemed necessary. Results Analysis of the 67 cases is presented. 5 re‐explorations were done. The early diagnosis of venous congestion was possible using this technique. Timely intervention contributed to the success of the re‐explorations and these flaps could be salvaged. The file size of images was in the range of 1 MB–6 MB. The file size of an entire set of images ranged about 7 MB–9 MB. These were sent across the ADSL internet lines. Conclusion The use of the digital images and the internet allow reconstructive surgeons to have a reliable picture of the state of their free tissue transfers. This permits decrease in observer error and saves valuable time which otherwise needs to be spent to verify situations of doubt and offers an ideal solution to the logistic problem of having to visit the patient in case of doubt. 相似文献
82.
弥漫性轴索损伤病人的护理 总被引:3,自引:0,他引:3
弥漫性轴索损伤 (DAI) ,在脑损伤中发生率高 ,病死率高 ,占脑外伤死亡病人总数的 3 5 %。全部DAI病人中植物生存率为 15 % ,重残 14 % [1] 。为了降低病死率 ,提高病人的生存质量 ,现将 1999年 1月— 2 0 0 2年 1月我院收治的 5 5例DAI昏迷病人的护理体会总结如下。1 临床资料 本组 5 5例 ,男 3 8例 ,女 17例 ,年龄 6岁~ 68岁 ,平均 40 .9岁。格拉斯哥 (GLS)计分均 <8分 ,其中评分为 3分~ 5分的特重型病人 3 2例。致伤原因 :车祸 44例 ,高处坠落 8例 ,打击伤 3例。 5 5例病人中有 17例因合并颅内血肿而行开颅手术 ,其他病人为保… 相似文献
83.
84.
Qualls E J Stevens Jason M Seibly Ying H Chen Rob D Dickerman Jerry Noel Keith A Kattner 《Journal of clinical neuroscience》2007,14(6):585-589
The adequate treatment of methicillin-resistant Staphylococcus aureus (MRSA) osteomyelitis has intrigued clinicians for some time. As the resistance of these pathogens, coupled with the increase in community-acquired cases, continues steadily to rise, clinicians are finding it useful to employ multi-modal approaches for efficacious treatment. The authors present a single case report of a patient with recurrent MRSA osteomyelitis, lumbar paraspinal and epidural abscess. He was found to have decreased muscle strength and was hyporeflexic in the involved extremity. Serum testing demonstrated MRSA bacteremia. Neuroimaging studies revealed evidence of paraspinal abscess and a presumed herniated nucleus pulposus at the L5/S1 interspace with significant nerve root compromise. Despite antimicrobials, his symptoms persisted, necessitating surgical exploration. At surgery, paraspinal and epidural abscesses were encountered and debrided; however, no herniated disc was visualized. This case demonstrates the diagnostic and therapeutic dilemmas with which these lesions present. We postulate that the MRSA osteomyelitis/discitis pathogens were walled off in the disc space and subsequently inoculated the soft tissues with ensuing bacteremia. We concur that antimicrobial treatment should be the first line of therapy for these patients; however, surgical debridements and cautious spinal instrumentation should be employed where appropriate. 相似文献
85.
目的了解社区居民健康行为咨询点现况,以进一步规范咨询点工作,为居民提供一流健康服务。方法采用资料法、现场观察法及问卷调查方法,对全区所有咨询点的硬件、软件配备情况、工作开展情况和规范程度以及咨询点服务对象对咨询点知晓情况、满意度进行综合评估。结果60.5%的咨询点工作完全达标;99.2%的居民知晓服务信息;97.8%的居民接受过咨询服务,居民对咨询点服务满意率达97.2%;分别有25.7%的咨询员、50.4%的居委干部、23.2%的居民提出增加服务时间、内容,改善服务条件等建议。结论调查对象对健康行为咨询点服务满意度逐年上升,但咨询点的整体服务水平还有待提高,特别在服务时间、服务内容以及服务条件等方面,还有待完善。 相似文献
86.
指背腱膜的解剖学研究 总被引:1,自引:1,他引:0
目的 探讨指背腱膜的构成特点及临床意义。方法 在30只成人尸体手标本上,通过模拟手术,对指背腱膜的构成特点进行了应用解剖学观测。结果 指背腱膜的构成复杂,其中的外侧腱束、外侧束、外侧腱和中央束在手指畸形的发生中有着特殊的临床意义。外侧腱束主要形成伸近节指间关节的功能解剖机制;其与外侧束形成的密切纤维联系而具有协同外侧腱的功能;该腱束与屈肌腱鞘有联系又使其具有平衡屈肌和伸肌肌力的作用。中央束在指背腱膜的整体协调、畸形的发生及矫正过程中起着重要的功能。结论 通过对指背腱膜的解剖研究,可以解释因指屈、伸肌腱平衡被破坏后所形成的畸形。 相似文献
87.
Chee-Yueh Angie Ho Chun-Yu Chen Min-Wen Yang Hung-Ping Liu 《European journal of cardio-thoracic surgery》2005,28(1):174-175
Functional separation of the lungs may be accomplished by several methods. Patient with restricted mouth opening has limited options for one-lung ventilation. We report the use of wire-guided endobronchial blockade, a new tool for achieving one-lung ventilation in a patient with restricted mouth opening requiring nasotracheal, fiberoptic intubation for esophagectomy and reconstruction with gastric tube substitution. 相似文献
88.
[目的] 加强对输入性医学媒介生物预警应急工作,防止媒介传入,保障我国人民身体健康.[方法] 对江苏口岸2002~2005年上半年输入性媒介生物截获情况进行统计分析.[结果] 2002~2005年上半年江苏口岸输入性媒介生物疫情截获率逐年上升.[结论] 传染病传播媒介生物的监测、病原携带检测和传入性风险分析,将作为世界卫生组织评估“监测技术水平、预警反应能力和处置实力”的重要指标之一,成为各成员国关注的焦点,同时也将成为各成员国间设置贸易技术壁垒的重要手段之一.因此,加强传染病传播媒介生物监测和控制工作势在必行. 相似文献
89.
90.
To study the pathological and histochemical characteristics of lesions in piglet livers infected with Taenia saginata asiatica (T. saginata asiatica) throughout the different stages, piglets were fed with eggs of T. saginata asiatica and raised in isolation in an animal center to establish the T. saginata asiatica infection model with normal piglets as control. The pathological changes in the piglet livers were observed after the infection
using liver sections stained with hematoxylin and eosin. Histochemical methods were used to check the changes in lipid, glycogen
and protein content in the liver. The data collected by image analysis were analyzed statistically with Statistical Package
for the Social Science. The results show that T. saginata asiatica-exposed piglets were indeed infected. Inflammatory reactions began on the fourth day and progressed rapidly. Kupffer cell
hyperplasia, hepatic hydropic degeneration and ballooning degeneration were found in the 10th–20th days after infection. Hepatic
central veins and hepatic sinusoids were dilated and congested. Spotty necrosis occurred in some local liver tissues. In the
40th–60th days, granulomatous reactions and mild hepatocirrhosis were the main lesions. In the 70th–80th days, hepatocirrhosis
and bile duct proliferation were observed in the liver. In the different stages, lipid drops were increased while glycogen
and protein levels were decreased to some degree. There was a significant difference in metabolism between the infected group
and the control group (P < 0.01). It is concluded that pigs are the favorable intermediate host of T. saginata asiatica and its infection can result in serious pathological and histochemical lesions in host organs.
Translated from Journal of Guiyang Medical College, 2006, 31(4): 296–300 [译自: 贵阳医学院学报] 相似文献