全文获取类型
收费全文 | 2197篇 |
免费 | 155篇 |
国内免费 | 2篇 |
专业分类
耳鼻咽喉 | 6篇 |
儿科学 | 49篇 |
妇产科学 | 44篇 |
基础医学 | 237篇 |
口腔科学 | 36篇 |
临床医学 | 368篇 |
内科学 | 467篇 |
皮肤病学 | 27篇 |
神经病学 | 248篇 |
特种医学 | 60篇 |
外科学 | 190篇 |
综合类 | 35篇 |
一般理论 | 2篇 |
预防医学 | 306篇 |
眼科学 | 50篇 |
药学 | 106篇 |
中国医学 | 1篇 |
肿瘤学 | 122篇 |
出版年
2023年 | 22篇 |
2022年 | 23篇 |
2021年 | 41篇 |
2020年 | 35篇 |
2019年 | 44篇 |
2018年 | 52篇 |
2017年 | 44篇 |
2016年 | 48篇 |
2015年 | 56篇 |
2014年 | 68篇 |
2013年 | 101篇 |
2012年 | 169篇 |
2011年 | 125篇 |
2010年 | 78篇 |
2009年 | 69篇 |
2008年 | 125篇 |
2007年 | 125篇 |
2006年 | 121篇 |
2005年 | 149篇 |
2004年 | 138篇 |
2003年 | 109篇 |
2002年 | 119篇 |
2001年 | 26篇 |
2000年 | 33篇 |
1999年 | 37篇 |
1998年 | 21篇 |
1997年 | 18篇 |
1996年 | 27篇 |
1995年 | 15篇 |
1994年 | 12篇 |
1993年 | 13篇 |
1992年 | 23篇 |
1991年 | 24篇 |
1990年 | 18篇 |
1989年 | 11篇 |
1988年 | 12篇 |
1986年 | 11篇 |
1985年 | 16篇 |
1984年 | 8篇 |
1983年 | 7篇 |
1982年 | 10篇 |
1979年 | 10篇 |
1978年 | 9篇 |
1977年 | 9篇 |
1976年 | 13篇 |
1975年 | 12篇 |
1974年 | 13篇 |
1971年 | 8篇 |
1970年 | 11篇 |
1968年 | 7篇 |
排序方式: 共有2354条查询结果,搜索用时 31 毫秒
91.
92.
93.
Purpose. This study described the role normalization played for parents related to their young children with hypoplastic left heart syndrome. Design and Methods. The data source for this secondary analysis was 30 interviews with 16 parents. Results. Three themes were identified: normalization, parental perception of child vulnerability, and optimistic appraisal. Parents engaged in a balancing act between worrying about their children's vulnerability and marveling at their children's survival, using normalization as a coping strategy. Practice Implications. Nurses can collaborate with parents to determine strategies to restore a sense of normalcy to simultaneously promote child independence and parent well‐being. 相似文献
94.
Gwen Hosey Henry Ichiho Dawn Satterfield Irene Dankwa-Mullan Stevenson Kuartei Kyu Rhee Tayna Belyeu-Camacho Ione deBrum Yorah Demei Kipier Lippwe Patrick Solidum Luces Faiese Roby 《Preventing chronic disease》2011,8(4)
In recent years, illness and death due to chronic disease in the US Associated Pacific Islands (USAPI) jurisdictions have dramatically increased. Effective chronic disease surveillance can help monitor disease trends, evaluate public policy, prioritize resource allocation, and guide program planning, evaluation, and research. Although chronic disease surveillance is being conducted in the USAPI, no recently published capacity assessments for chronic disease surveillance are available. The objective of this study was to assess the quality of existing USAPI chronic disease data sources and identify jurisdictional capacity for chronic disease surveillance. The assessment included a chronic disease data source inventory, literature review, and review of surveillance documentation available from the web or through individual jurisdictions. We used the World Health Organization''s Health Metric Network Framework to assess data source quality and to identify jurisdictional capacity. Results showed that USAPI data sources are generally aligned with widely accepted chronic disease surveillance indicators and use standardized data collection methodology to measure chronic disease behavioral risks, preventive practices, illness, and death. However, all jurisdictions need to strengthen chronic disease surveillance through continued assessment and expanded support for valid and reliable data collection, analysis and reporting, dissemination, and integration among population-based and institution-based data sources. For sustained improvement, we recommend investment and technical assistance in support of a chronic disease surveillance system that integrates population-based and institution-based data sources. An integrated strategy that bridges and links USAPI data sources can support evidence-based policy and population health interventions. 相似文献
95.
96.
97.
Gwen Lomberk 《Pancreatology》2010,10(4):413-415
Since meetings are our outlet as medical doctors and scientists to learn about the latest advances in our field, this issue highlights some worldwide meetings and conferences that may be of significant interest to put on your calendar during 2010 and 2011. These meetings are hosted by many of our affiliated societies throughout the world and have sessions dedicated to some form of pancreatic disease-related research. Many are annual meetings, so even if your travel calendar is booked for the year, utilizing their website to examine the program topics and abstracts for this year may prompt interest to attend one of the following year's meetings. 相似文献
98.
Hepatitis B surface antigen derived from chronic hepatitis B carriers has been replaced almost completely by recombinant DNA-derived HBsAg for use as hepatitis B vaccine. Similarly, recombinant DNA-derived HBsAg is replacing plasma-derived HBsAg in standard anti-HBs assays. We analysed the influence of a change from plasma-derived HBsAg to recombinant DNA-derived HBsAg on antigen presentation in immunoassays and the characteristics of the anti-HBs antibodies after immunisation. Antigens and/or antibodies were subjected to three types of experiments: (a) binding of 'a'-loop specific monoclonal (anti-S) antibody conjugates to immobilised vaccine-HBsAg; (b) binding of post-vaccination anti-HBs to immobilised (vaccine-)HBsAg and (c) inhibition of HBsAg binding to immobilised monoclonal anti-HBs after pre-incubation with post-vaccination antibodies. Our results show that, in both antigen presentation and anti-HBs binding properties, yeast recombinant HBsAg and related antibodies could be clearly distinguished from plasma-derived HBsAg and related antibodies. Divergent results were also obtained in the inhibition assay with recombinant DNA-derived HBsAg but not with serum HBsAg from the vaccine HBsAg subtype. It is concluded that both antigen presentation in vaccines and in anti-HBs assays can markedly influence the quantitation anti-HBs response. It is suggested that a challenge with an heterologous hepatitis B virus may encounter reduced efficacy of vaccine antibodies. 相似文献
99.
J J Apuzzio V Ganesh Z Kaminski B Bergen B Holland D B Louria 《Surgery, gynecology & obstetrics》1988,166(5):413-417
The efficacy of a single antibiotic--Timentin (ticarcillin with clavulanic acid)--was compared with a standard two antibiotic regimen (clindamycin and gentamicin) for the treatment of endomyometritis after cesarean delivery. The regimens were 3 grams of ticarcillin plus 100 milligrams of clavulanic acid given intravenously every four hours, or 600 milligrams of clindamycin given intravenously every six hours plus 3 to 5 milligrams per kilogram per day of gentamicin given intramuscularly. The diagnosis of endomyometritis was based upon an oral temperature of 100.4 degrees F. or higher on any two occasions, excluding the first 24 hours post partum, uterine tenderness and the absence of another focus of infection. Ninety-one patients were treated. Treatment failure rates were three of 49 in the clindamycin and gentamicin group and four of 42 of the ticarcillin plus clavulanic acid group. Treatment failures did not appear to be different from successes demographically or in risk factors for endomyometritis. The results of this study suggest that ticarcillin with clavulanic acid is as effective in the treatment of postcesarean endomyometritis as the standard regimen of clindamycin and gentamicin. 相似文献
100.
Physician attitudes and practices and patient awareness of the cardiovascular complications of diabetes 总被引:2,自引:0,他引:2
Merz CN Buse JB Tuncer D Twillman GB 《Journal of the American College of Cardiology》2002,40(10):1877-1881
OBJECTIVES: Studies were conducted to: 1) assess physicians' attitudes and practices in managing cardiovascular disease (CVD) risks in diabetes; and 2) determine the awareness of CVD risks among diabetic patients. BACKGROUND: Cardiovascular disease is the leading cause of premature death among diabetic patients. As diabetes is often seen as a "glucose-centric" disease, it is unclear whether diabetic patients are talking with their doctors about CVD and other key clinical parameters of diabetes care such as blood pressure and cholesterol. METHODS: An online survey was completed by a nationally representative sample of 900 physicians. The 95% confidence interval is approximately +/-2.5%. Before this study, a telephone survey of 2,008 people with diabetes was conducted using random, direct-dial screenings of U.S. households. RESULTS: Ninety-one percent of physicians believe that their patients with diabetes are "very" or "extremely" likely to have a cardiovascular event. Although physicians report discussing CVD risk factors with 88% of their diabetic patients, they perceive their diabetic patients as being only moderately knowledgeable about their increased CVD risks. Sixty-eight percent of the people with diabetes do not consider CVD to be a serious complication of diabetes; they are more likely to be aware of complications such as blindness (65%) or amputation (36%) rather than heart disease (17%), heart attack (14%), or stroke (5%). Physicians perceive "poor compliance" with behavioral modifications and medication regimens as the greatest barriers to the management of CVD risks in diabetic patients. CONCLUSION: Materials should be made available to help facilitate communication about CVD risks, and strategies for improving compliance with life-style modifications and multiple drug therapies should be explored. Efforts should continue to promote a comprehensive approach to the management of diabetes to include aggressive control of blood glucose and other CVD risk factors. 相似文献