首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   130746篇
  免费   5614篇
  国内免费   313篇
耳鼻咽喉   2020篇
儿科学   4099篇
妇产科学   2864篇
基础医学   17620篇
口腔科学   4428篇
临床医学   8017篇
内科学   32394篇
皮肤病学   4262篇
神经病学   10156篇
特种医学   3196篇
外国民族医学   2篇
外科学   16211篇
综合类   716篇
一般理论   37篇
预防医学   12656篇
眼科学   2889篇
药学   8859篇
  1篇
中国医学   628篇
肿瘤学   5618篇
  2023年   815篇
  2022年   691篇
  2021年   2775篇
  2020年   1407篇
  2019年   3050篇
  2018年   5012篇
  2017年   2916篇
  2016年   2707篇
  2015年   3037篇
  2014年   3566篇
  2013年   5332篇
  2012年   9279篇
  2011年   9893篇
  2010年   5024篇
  2009年   3611篇
  2008年   7919篇
  2007年   8462篇
  2006年   7827篇
  2005年   7757篇
  2004年   6863篇
  2003年   6466篇
  2002年   6062篇
  2001年   3899篇
  2000年   4518篇
  1999年   3406篇
  1998年   627篇
  1997年   425篇
  1996年   407篇
  1995年   330篇
  1994年   255篇
  1992年   1296篇
  1991年   1104篇
  1990年   960篇
  1989年   819篇
  1988年   680篇
  1987年   656篇
  1986年   650篇
  1985年   550篇
  1984年   407篇
  1983年   313篇
  1979年   339篇
  1975年   283篇
  1974年   322篇
  1973年   351篇
  1972年   291篇
  1971年   318篇
  1970年   291篇
  1969年   296篇
  1968年   270篇
  1967年   240篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
Gray platelet syndrome (GPS) is a rare (<1/1 000 000) and inherited platelet function disorder characterized by macrothrombocytopenia, α-granule deficiency, and hemorrhages. Bleeding intensity does not correlate with platelet count nor with functional test results. We hereby describe the perioperative bleeding prevention and management of a patient with GPS requiring multiple redo cardiac surgeries.  相似文献   
22.
23.
Hepatocellular carcinoma (HCC) is the most frequent primary liver cancer and presents together with cirrhosis in most cases. In addition to commonly recognized risk factors for HCC development, such as hepatitis B virus/hepatitis C virus infection, age and alcohol/tobacco consumption, there are nutritional risk factors also related to HCC development including high intake of saturated fats derived from red meat, type of cooking (generation of heterocyclic amines) and contamination of foods with aflatoxins. On the contrary, protective nutritional factors include diets rich in fiber, fruits and vegetables, n-3 polyunsaturated fatty acids and coffee. While the patient is being evaluated for staging and treatment of HCC, special attention should be paid to nutritional support, including proper nutritional assessment and therapy by a multidisciplinary team. It must be considered that these patients usually develop HCC on top of long-lasting cirrhosis, and therefore they could present with severe malnutrition. Cirrhosis-related complications should be properly addressed and considered for nutritional care. In addition to traditional methods, functional testing, phase angle and computed tomography scan derived skeletal muscle index-L3 are among the most useful tools for nutritional assessment. Nutritional therapy should be centered on providing enough energy and protein to manage the increased requirements of both cirrhosis and cancer. Supplementation with branched-chain amino acids is also recommended as it improves response to treatment, nutritional status and survival, and finally physical exercise must be encouraged and adapted to individual needs.  相似文献   
24.

Objective

To discover the experiences of end-of-life patients attended by the emergency services, through the discourse of the family caregivers who accompanied the family member in this care transit.

Method

A qualitative approach study, based on the paradigm of hermeneutical phenomenology. In total, 81 family caregivers participated. The techniques used were the in-depth interview and the discussion group, with a total of 5 discussion groups and 41 interviews. The period of data collection was carried out between January 2013 and June 2014.

Results

In the network of discourses obtained with respect to “Urgent Care”, all the codes were grouped in relation to a single argumentative line: deficiencies in urgent care. Among them, we found different dimensions that are established depending on the different times of care, or the different determinant aspects of these deficiencies: disorganization of the care received, lack of experience of the professionals in emergencies, application of general protocols in the emergency services, inadequate care in the treatment received, delays in emergency care.

Conclusions

In general, we highlight the dissatisfaction of the family members with respect to the care received from the emergency services. The needs of these types of situation are not covered from these services and are of low quality. Therefore, it is necessary to reorient the care protocols for these patients.  相似文献   
25.
26.
27.
28.
Most of the patients who overcome the SARS-CoV-2 infection do not present complications and do not require a specific follow-up, but a significant proportion (especially those with moderate / severe clinical forms of the disease) require clinicalradiological follow-up. Although there are hardly any references or clinical guidelines regarding the long-term follow-up of post-COVID-19 patients, radiological exams are being performed and monographic surveillance consultations are being set up in most of the hospitals to meet their needs. The purpose of this work is to share our experience in the management of the post-COVID-19 patient in two institutions thathave had a high incidence of COVID-19 and to propose general follow-uprecommendations from a clinical and radiological perspective.  相似文献   
29.
30.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号