全文获取类型
收费全文 | 9333篇 |
免费 | 626篇 |
国内免费 | 29篇 |
专业分类
耳鼻咽喉 | 131篇 |
儿科学 | 250篇 |
妇产科学 | 150篇 |
基础医学 | 1521篇 |
口腔科学 | 487篇 |
临床医学 | 771篇 |
内科学 | 2017篇 |
皮肤病学 | 317篇 |
神经病学 | 762篇 |
特种医学 | 432篇 |
外国民族医学 | 2篇 |
外科学 | 1381篇 |
综合类 | 70篇 |
一般理论 | 2篇 |
预防医学 | 677篇 |
眼科学 | 124篇 |
药学 | 499篇 |
中国医学 | 17篇 |
肿瘤学 | 378篇 |
出版年
2023年 | 58篇 |
2022年 | 124篇 |
2021年 | 253篇 |
2020年 | 174篇 |
2019年 | 233篇 |
2018年 | 243篇 |
2017年 | 176篇 |
2016年 | 248篇 |
2015年 | 250篇 |
2014年 | 284篇 |
2013年 | 388篇 |
2012年 | 534篇 |
2011年 | 606篇 |
2010年 | 280篇 |
2009年 | 253篇 |
2008年 | 402篇 |
2007年 | 442篇 |
2006年 | 400篇 |
2005年 | 334篇 |
2004年 | 317篇 |
2003年 | 333篇 |
2002年 | 287篇 |
2001年 | 237篇 |
2000年 | 269篇 |
1999年 | 214篇 |
1998年 | 78篇 |
1997年 | 67篇 |
1996年 | 53篇 |
1995年 | 51篇 |
1994年 | 49篇 |
1992年 | 117篇 |
1991年 | 117篇 |
1990年 | 109篇 |
1989年 | 108篇 |
1988年 | 120篇 |
1987年 | 137篇 |
1986年 | 118篇 |
1985年 | 113篇 |
1984年 | 86篇 |
1983年 | 68篇 |
1981年 | 46篇 |
1979年 | 75篇 |
1978年 | 64篇 |
1976年 | 46篇 |
1974年 | 61篇 |
1973年 | 74篇 |
1972年 | 53篇 |
1971年 | 52篇 |
1970年 | 49篇 |
1968年 | 51篇 |
排序方式: 共有9988条查询结果,搜索用时 187 毫秒
1.
2.
Joseane Balan Da Silva Gleison Daion Piovezana Bossolani Camila Piva Greicy Brisa Malaquias Dias Jancarlo Gomes Ferreira Diogo Francisco Rossoni 《International journal of environmental health research》2016,26(5-6):578-588
The spatial distribution of enteroparasitosis in an indigenous village from Paraná was evaluated to identify areas of risk for these infections. A cross-sectional study (from November 2010 to June 2011) was performed using Three Faecal Test® and Kato &; Katz method and a questionnaire on housing and hygiene conditions was administered. Local geostatistical analyses were performed to determine the spatial distribution of intestinal parasitic infections. The overall prevalence of enteroparasites was 67.2?% (457/680), and the most prevalent taxa were Ascaris lumbricoides (48.8?%) and Trichuris trichiura (44.7?%). The prevalence of heavy infection by soil-transmitted helminths was 3.6?% and the families lived in houses with an average of 5.1 residents and < 2 bedrooms per household. The average number of species per individual present spatial heterogeneity with the highest values (≥0.8) in areas with high clustering of residences. The visualization of the spatial distribution of intestinal parasites in this indigenous village is an important contribution to determining health risk areas and planning decisions and services. 相似文献
3.
Camila Padilha Barbosa Rosalie Barreto Belian Cláudia Marina Tavares de Araújo 《Jornal de pediatria》2021,97(1):80-87
ObjectiveTo present, the process of development and evaluation of an educational software on the Child Health Handbook proposed for the continuing education of primary care nurses and physicians.MethodsQuantitative study of methodological development. For software development, the following steps were followed: definition of objectives; determination of the target audience; choice of pedagogical and theoretical reference for content; content selection and structuring; software development and evaluation by experts (five nurses and four physicians). All responded to an instrument that included four domains: pedagogical; content; functionality; system presentation and usability. The evaluation criteria were arranged on a Likert-type scale. The percentage of agreement and Content Validity Index were used for the quantitative analysis of the degree of agreement, considering a Content Validity Index cutoff point equal to 0.80.ResultsThe overall agreement index, calculated by the arithmetic mean of the Contents Validity Index of the evaluated domains, was 0.96, with scores ranging from 0.90 to 1.00. The average percentage of agreement of the experts per domain was 92.86%, with lower agreement in the content (80.95%), presentation, and usability (90.48%) domains. 100% of percentage of agreement was observed in the pedagogical and functionality domains among the evaluated specialists.ConclusionThe percentage of agreement, Content Validity Index and overall agreement index of the Child Health Handbook educational software in the context of primary care disclosed the software adequacy as an educational resource for continuing education of primary care nurses and physicians. Considering the assessed dimensions, it can also be used by other health professionals and undergraduate students. 相似文献
4.
Andrea Vliz Ramírez Susanne Krmer Strenger Melissa Solar Lpez Pamela Muoz Cortes Camila Corral Núez 《Special care in dentistry》2019,39(2):225-230
Cerebral palsy (CP) is a condition caused by brain damage before, during, or shortly after birth. Communication can be a challenge when treating patients with CP. Some patients can communicate verbally, while others use augmentative alternative communication tools or have individualized means of communication. Therefore, professional dental treatment in individuals with CP is challenging, especially if the patient is affected by dental trauma and requires emergency treatment. This report shows how individualized communication skills assessment allowed us to successfully manage a 9‐year‐old patient with CP, who suffered extrusive luxation of the permanent lower incisor. In the present case, the teeth were repositioned briefly after the trauma had occurred and then stabilized with a flexible splint according to international guidelines. The teeth remained vital and periodontal repair was observed during the 4‐year follow‐up. 相似文献
5.
Sandeep Gohar Devendra Desai Anand Joshi Anita Bhaduri Ramesh Deshpande C Balkrishna Mukesh Chawla Camila Rodrigues V R Joshi 《Indian journal of gastroenterology》2003,22(4):140-142
INTRODUCTION: Autoimmune hepatitis (AIH) is a well-defined entity in the West but there are sparse Indian data on this disease. AIM: To study the clinical profile and response to treatment of Indian patients with AIH. METHODS: This is a part retrospective and part prospective study of 50 patients (median age 48 years, range 11-82; 43 women) seen between 1995 to 2001, diagnosed to have AIH as per the revised scoring system. Clinical and laboratory profile, response to treatment, and complications of treatment were analyzed. RESULTS: AIH accounted for 6% of all patients with liver disease seen during the period. The presenting symptoms were gastrointestinal in 43 and non-gastrointestinal in 7, with median symptom duration of 6 months (range 2 weeks to 40 years). Forty patients (80%) had chronic liver disease. Associated illnesses were present in 28 patients. Twenty-six patients were classified as definite and the rest as probable AIH. Forty-nine patients had Type 1 AIH. Five patients had overlap syndrome. Forty-five patients (90%) received immunosuppressive therapy. Twelve of 18 patients receiving only prednisolone and 21 of 27 patients receiving prednisolone and azathioprine combination responded. Thirteen (26%) patients had therapy-related complications (infectious 5, non infectious 8) with two treatment-related deaths. CONCLUSION: Type 1 AIH was the predominant type of AIH. The majority of patients with AIH presented with chronic liver disease. There was good response to immunosuppressive therapy. Therapy-related complications occurred in one-fourth of patients. 相似文献
6.
Oil-emulsified (OE) and aqueous (Aq) vaccines were prepared with the same batch of inactivated A24 8345 foot and mouth disease virus (FMDV). Calves born to vaccinated dams did not respond to the Aq vaccine 30 or 90 days post partum. When the OE vaccine was used on a similar group of calves, no responses were elicited up to 21 days post partum. However, calves 30 or more days old responded like adult cattle to the OE vaccine. When the OE vaccine was used in colostral antibody-free calves 3-30 days old, all animals showed good antibody responses but, in calves vaccinated 3 or 7 days post partum, antibodies were detectable only after a considerable period of time. Our results show that both passively acquired colostral antibodies and age are important in the response of very young calves to FMDV oil vaccines. From a practical point of view, in endemic areas where adult cattle are periodically vaccinated, vaccination of calves between 30 and 60 days post partum with OE vaccines would lead to high levels of herd protection. 相似文献
7.
The Resource-Based Relative Value Scale. Toward the development of an alternative physician payment system 总被引:2,自引:0,他引:2
This article describes the design and methods of a study currently under way to develop a Resource-Based Relative Value Scale (RBRVS); an alternative basis for establishing the payment rate for the services and procedures (S/Ps) of physicians in medical and surgical specialties. Physician resource inputs to be measured include (1) S/P time, (2) pre-S/P and post-S/P times, (3) intensity, (4) practice costs, including malpractice premiums, and (5) the cost of specialty training. These five factors will be combined to produce an RBRVS denominated in nonmonetary units. In the initial phase of the study, data on time and intensity will be obtained through a national survey of physicians who perform these S/Ps. In the second, consensus phase of the project, the investigators will convene a panel of representatives of the medical profession, third-party payers, consumers, and other interested parties to examine areas of agreement and disagreement as to how an RBRVS should be used for policy purposes. The final results of this study are expected by the summer of 1988. 相似文献
8.
9.
Kinzl Geelen F. Ferrio Langsteiner Dubitscher Pfister H. Donalies Kranz G. A. Adam Koller v. Baeyer Zillig G. Rost Sjvall Einar Hahn Rubner Max H. Hofmann Bresowsky Mller H. Liguori-Hohenauer Geller Braun F. Leibbrand Tbben H. 《International journal of legal medicine》1940,33(4):353-364
International Journal of Legal Medicine - 相似文献
10.
Long-term complications of renal transplantation 总被引:3,自引:0,他引:3
W E Braun 《Kidney international》1990,37(5):1363-1378