全文获取类型
收费全文 | 26718篇 |
免费 | 1442篇 |
国内免费 | 91篇 |
专业分类
耳鼻咽喉 | 303篇 |
儿科学 | 869篇 |
妇产科学 | 512篇 |
基础医学 | 3526篇 |
口腔科学 | 554篇 |
临床医学 | 1906篇 |
内科学 | 6512篇 |
皮肤病学 | 955篇 |
神经病学 | 2167篇 |
特种医学 | 613篇 |
外国民族医学 | 1篇 |
外科学 | 3564篇 |
综合类 | 148篇 |
现状与发展 | 1篇 |
一般理论 | 7篇 |
预防医学 | 2906篇 |
眼科学 | 536篇 |
药学 | 1636篇 |
中国医学 | 131篇 |
肿瘤学 | 1404篇 |
出版年
2024年 | 17篇 |
2023年 | 211篇 |
2022年 | 308篇 |
2021年 | 873篇 |
2020年 | 394篇 |
2019年 | 795篇 |
2018年 | 1179篇 |
2017年 | 680篇 |
2016年 | 581篇 |
2015年 | 712篇 |
2014年 | 861篇 |
2013年 | 1208篇 |
2012年 | 1940篇 |
2011年 | 2095篇 |
2010年 | 1093篇 |
2009年 | 853篇 |
2008年 | 1658篇 |
2007年 | 1749篇 |
2006年 | 1600篇 |
2005年 | 1700篇 |
2004年 | 1420篇 |
2003年 | 1373篇 |
2002年 | 1213篇 |
2001年 | 696篇 |
2000年 | 691篇 |
1999年 | 562篇 |
1998年 | 145篇 |
1997年 | 98篇 |
1996年 | 93篇 |
1995年 | 86篇 |
1994年 | 52篇 |
1993年 | 53篇 |
1992年 | 178篇 |
1991年 | 178篇 |
1990年 | 116篇 |
1989年 | 103篇 |
1988年 | 89篇 |
1987年 | 73篇 |
1986年 | 67篇 |
1985年 | 70篇 |
1984年 | 53篇 |
1983年 | 34篇 |
1979年 | 32篇 |
1978年 | 23篇 |
1977年 | 24篇 |
1974年 | 21篇 |
1973年 | 26篇 |
1972年 | 15篇 |
1970年 | 16篇 |
1969年 | 15篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
G Falero I Rodríguez J Sarracent A J Otero B L Rodríguez A Rojas E Ochoa 《Hybridoma》1992,11(6):815-823
We report the generation of murine triomas by fusing splenocytes from mice previously immunized with HBsAg ay-subtype and a hybridoma, secreting anti-HBsAg ad-subtype monoclonal antibody, which was rendered HGPRT- by induced mutagenesis with N-methyl-N'nitro-N-nitrosoguanidine. The fusion yielded a 83.8% of hybrids showing the antigen specificity of the parental hybridoma and a 16.1% of bi-specific monoclonal antibodies. One of them, coded as 1C8A5, showing a heavy chain isotype (IgG1/IgG2b) was used as capture reagent in an ultramicro-ELISA. As little as 0.78 I.U. of both HBsAg ad- and ay-subtypes could be realiably detected. 相似文献
52.
M A López Cara P J Tárraga López M Cerdán Oliver J M Oca?a López A Celada Rodríguez J Solera Albero M A Palomino Medina 《Revista española de enfermedades digestivas》2006,98(6):449-459
OBJECTIVE: To Determine the incidence of constipation in Albacete province and its relation with diet and lifestyle. PATIENTS AND METHODS: Cross-sectional population survey. We studied 414 participants over 50 years of age in Albacete province. 445 persons over 50 years of age were included in the study. All participants were selected by systematic random sampling; 414 participants filled in the questionnaire correctly. Main measures: age, weight and height, marital status, level of education and occupation; presence of a disease, number of sleep hours a day, physical exercise, smoking, alcohol intake, drug intake (anti-inflammatories and laxatives); bowel habit, diet, meal frequency and place; food intake frequency per week, daily intake of water, coffee, tea and herbal beverages; vitamin and fiber supplements; presence of cancer in the family. RESULTS: 56.9% of participants were women. Mean age 67.07 years. In Albacete province, 4.4% of the population over 50 years have a bowel habit consistent with constipation. Most participants had three meals a day (breakfast, lunch, and supper), while 50% had another meal in the morning or afternoon. These meals took place, habitually, in the domicile. There was a preponderance in daily intake of the following foods: milk (83.7%), bread (95.1%), vegetables (68.8%), fruit (91.8%), and virgin olive oil (96.6%). Fish was eaten every one to two days, and pulses and meat every three to six days. 44.4% of participants drank one to two liters of water a day. Only 3.9% of participants took some supplement; 35% of participants were on a diet. It was observed that 97.7% of participants with more than three defecations a week had a high intake of virgin olive oil; 65.7% of participants did some physical exercise customarily; 70.2% of participants were non-smokers, 10.2% were smokers, and 18.4% were ex-smokers. With regard to alcohol, the percentage of drinkers was 35.1%. The main class of medications taken by participants was NSAIDs - 14.5%; 79.7% took neither NSAIDs nor laxatives. Only 2.7% of participants took laxatives regularly. CONCLUSIONS: Most participants had relatively healthy eating habits. 相似文献
53.
54.
Juan M. Verdeguer M.D. Dolores Ramon M.D. Manuel Moragon M.D. Isabel Betlloch M.D. Esperanza Jorda M.D. M.D Victoria Planelles M.D. † 《Pediatric dermatology》1988,5(1):56-57
Abstract: Hydantoin is an anticonvulsant drug with several side effects. A teralogenic potential has been suggested. The fetal hydantoin syndrome is an entity that consists of a broad range of morphologic and developmental disorders in children born of epileptic mothers exposed to hydantoin during pregnancy. We treated a girl in whom onychopathy was a monosymptomatic or mild form of this syndrome. 相似文献
55.
J L Martínez Sande A Amaro Cendón E Blanco Labrador M Pérez Rodríguez A Sánchez Prieto C Iglesias Carre?o M Gil de la Pe?a 《Revista espa?ola de cardiología》1992,45(8):545-548
A 32-year old woman, with endocarditis caused by Streptococcus mitis, and systolic murmur is presented. The Doppler examination was found a systolic gradient of 150 mmHg. Aortography showed a multiple membranous supravalvular aortic stenosis, with aneurysmal dilatation of the left main coronary artery and circumflex artery, associated with bicuspid aortic valve and mild aortic insufficiency. The patient died suddenly by cardiac arrest in stand by to cardiac surgery. Anatomic comprobation was not possible. The coronary artery anomalies associated with the supravalvular aortic stenosis syndrome are reviewed. 相似文献
56.
57.
Delvys Rodríguez-Abreu Marta Llanos Muñoz Mariano Provencio Pulla Antonio Rueda Domínguez Dolores Isla Casado 《Clinical & translational oncology》2010,12(11):760-764
Follicular lymphoma (FL) is the second most common subtype of non-Hodgkin’s lymphoma (NHL) in the Western world. FL constitutes the most frequent indolent lymphoma, well characterized by its clinical presentation related to nodal involvement and its morphologic and biologic features. It is often managed as an incurable disease. However, several active therapeutic approaches from the ‘wait and watch” strategy to the allogeneic transplantation are available for management of patients with FL and clearly have changed the natural history of this disease, achieving a long-term disease-free survival. Therapeutic decision is mostly conditioned by patient’s characteristics, stage, histological grade, tumor burden, and risk-predicting factors. This article try to summarizes the diagnosis and treatment of this heterogeneous group of patients. 相似文献
58.
59.
60.
Isabel Porto 《Journal of human lactation》2003,19(4):421-425
Infections involving helminths or parasitic worms affect more than 25% of the population worldwide. Because lactating women and their infants are often affected by the complications of these infections such as iron deficiency anemia and malnutrition, they benefit the most from drug therapy. However, scientific literature offers little information regarding transfer of anthelmintics in breast milk and its effects in lactating infants. Scabies and pediculosis, or lice, are common skin infections affecting school-aged children. Close contacts of infected children, which often include lactating mothers, need treatment with one of the several topical products available in the market. This article will review the physicochemical properties and use of anthelmintics, pediculicides, and scabicides while breastfeeding. 相似文献