全文获取类型
收费全文 | 20961篇 |
免费 | 1574篇 |
国内免费 | 31篇 |
专业分类
耳鼻咽喉 | 206篇 |
儿科学 | 788篇 |
妇产科学 | 616篇 |
基础医学 | 2537篇 |
口腔科学 | 176篇 |
临床医学 | 4030篇 |
内科学 | 3556篇 |
皮肤病学 | 355篇 |
神经病学 | 1801篇 |
特种医学 | 346篇 |
外科学 | 1824篇 |
综合类 | 404篇 |
一般理论 | 34篇 |
预防医学 | 2808篇 |
眼科学 | 201篇 |
药学 | 1362篇 |
2篇 | |
中国医学 | 7篇 |
肿瘤学 | 1513篇 |
出版年
2023年 | 129篇 |
2022年 | 154篇 |
2021年 | 444篇 |
2020年 | 294篇 |
2019年 | 454篇 |
2018年 | 536篇 |
2017年 | 450篇 |
2016年 | 469篇 |
2015年 | 514篇 |
2014年 | 693篇 |
2013年 | 1022篇 |
2012年 | 1536篇 |
2011年 | 1544篇 |
2010年 | 858篇 |
2009年 | 773篇 |
2008年 | 1408篇 |
2007年 | 1523篇 |
2006年 | 1503篇 |
2005年 | 1401篇 |
2004年 | 1365篇 |
2003年 | 1254篇 |
2002年 | 1170篇 |
2001年 | 176篇 |
2000年 | 114篇 |
1999年 | 164篇 |
1998年 | 239篇 |
1997年 | 196篇 |
1996年 | 205篇 |
1995年 | 182篇 |
1994年 | 183篇 |
1993年 | 145篇 |
1992年 | 118篇 |
1991年 | 110篇 |
1990年 | 120篇 |
1989年 | 94篇 |
1988年 | 102篇 |
1987年 | 77篇 |
1986年 | 71篇 |
1985年 | 65篇 |
1984年 | 67篇 |
1983年 | 50篇 |
1982年 | 68篇 |
1981年 | 77篇 |
1980年 | 77篇 |
1979年 | 49篇 |
1978年 | 53篇 |
1977年 | 33篇 |
1976年 | 24篇 |
1974年 | 24篇 |
1973年 | 22篇 |
排序方式: 共有10000条查询结果,搜索用时 468 毫秒
91.
Kathleen Matuska Amy Giles-Heinz Nancy Flinn Michael Neighbor Julie Bass-Haugen 《The American journal of occupational therapy》2003,57(2):220-224
OBJECTIVE: The purpose of this study was to evaluate a pilot occupational therapy wellness program designed to teach elders the importance of participation in meaningful social and community occupations to their quality of life. METHOD: Sixty-five older adults participated in this pilot wellness program held at each of three senior apartment complexes. Measures of health-related quality of life using the SF-36 Health Survey and frequencies of social and community participation from a program-specific intake form were completed by 39 participants before and after the 6-month program. Participants also evaluated components of the program through a satisfaction survey. RESULTS: Scores on the SF-36 Health Survey were significantly higher in vitality, social functioning, and the mental health summary scores following participation in the program. Participants reported an increased frequency of socialization and community participation with an average of 55% participating in at least three or more activities per week before the program to an average of 66% participating after the program. Participants who benefited the most attended more classes, were older, and were nondrivers. Eighty percent of those polled rated the pilot program as good or excellent. CONCLUSION: This pilot study provides additional support for prevention efforts for elders in the community. Wellness programs for seniors may be most effective if targeted to those who are older and nondrivers. 相似文献
92.
93.
94.
L Laine R H Dretler C N Conteas C Tuazon F M Koster F Sattler K Squires M Z Islam 《Annals of internal medicine》1992,117(8):655-660
OBJECTIVE: To determine the clinical and endoscopic response of candida esophagitis to antifungal therapy and to compare the two oral antifungal agents, fluconazole and ketoconazole. DESIGN: Multicenter, randomized, double-blind trial. SETTING: Fifteen U.S. centers including university, private practice, and county hospital settings. PATIENTS: A total of 169 patients with the acquired immunodeficiency syndrome (AIDS); odynophagia, dysphagia, or retrosternal pain; white esophageal plaques at endoscopy; and pseudohyphae on esophageal brushings or biopsies. INTERVENTION: Patients were randomly assigned to fluconazole (100 mg/d) or ketoconazole (200 mg/d). Doses were doubled at week 1 or 2 if no symptomatic improvement had occurred during the preceding week. Therapy was continued for 2 weeks after resolution of symptoms or for a maximum of 8 weeks. MEASUREMENTS: Patients were clinically evaluated weekly, and laboratory tests were done every 2 weeks. Endoscopy was repeated within 5 days after the end of therapy. RESULTS: A total of 143 patients were clinically evaluable (assessed within 7 days after therapy), and 129 patients were endoscopically evaluable (endoscopy repeated after therapy). Endoscopic cure occurred in 91% of patients treated with fluconazole and in 52% of those given ketoconazole for a difference of 39% (95% Cl, 24% to 52%; P less than 0.001). Esophageal symptoms resolved in 85% of fluconazole-treated patients and in 65% of ketoconazole-treated patients for a difference of 20% (Cl, 6% to 34%; P = 0.006). Intention-to-treat analyses also yielded statistically significant differences for the comparisons listed above. Side effects were minimal and comparable in the two groups; only one patient in each group had therapy discontinued for adverse effects that were possibly related to the study medications. CONCLUSIONS: Fluconazole is associated with significantly greater rates of endoscopic and clinical cure than ketoconazole in patients with AIDS and candida esophagitis. Both drugs appear to be safe and well tolerated. 相似文献
95.
A survey of shelters serving women in Chicago (N = 43) identified admission criteria, policies and services, estimated the number of homeless women in childbearing years served by the shelters, the number who were pregnant or mothers with children, and identified unmet health needs and health services provided. The majority (64%) of the women using shelters were African American and there was great variability in shelter policies. Women with male children more than seven years old, pregnant women and substance abusers were less likely to be admitted. 相似文献
96.
Lynne S. Schilling RN PhD Margaret Grey DrPH FAAN CPNP & Kathleen A. Knafl PhD 《Journal of advanced nursing》2002,37(1):87-99
AIM: An evolutionary concept analysis was undertaken to clarify the concept of self-management of type 1 diabetes in children and adolescents. BACKGROUND: Several problems exist in the literature on self-management of type 1 diabetes in children and adolescents. There is no uniform terminology and there is no uniform definition of the concept. Also, there is no differentiation in the literature between self-management of diabetes in children and adults. METHODS: Ninety-nine references were reviewed and analysed in the disciplines of nursing, medicine, and psychology. After separate analyses revealed no significant differences across disciplines, the analyses were combined to describe the attributes, antecedents, consequences, and surrogate and related concepts. RESULTS: The three essential attributes of the concept were identified as process, activities, and goals. Self-management of type 1 diabetes in children and adolescents is an active and proactive process; it is daily, lifelong, and flexible, and it involves shifting and shared responsibility for diabetes care tasks and decision-making between child and parent. It is a process that involves collaboration with health care providers. Self-management of type 1 diabetes in children and adolescents also consists of varied and many activities related to giving insulin, monitoring metabolic control, regulating diet and exercise, to name just a few. The concept also involves goals, which may differ from one parent/child dyad to another. A working definition of the concept is suggested. CONCLUSIONS: It is hoped that a more uniform definition of the concept will enable researchers to continue investigating antecedents and consequences of the concept in a way that allows for aggregating results. 相似文献
97.
Six children with acquired choking phobia who failed outpatient intervention were treated in a rapid, behaviorally based inpatient program that integrated in vivo exposure with contingency management. Motivation to eat feared foods was increased via the manipulation of appetite and hospital privileges (e.g., visits, TV). Children were required to eat small quantities of feared food to receive privileges, and failure to meet these requirements resulted in privilege suspension. Elimination of the choking phobia occurred within 3 days. This approach is appropriate for cases in which outpatient treatment fails, in which parents have made legitimate attempts at home-based treatment, or in which the child's medical condition warrants it. 相似文献
98.
Received from the Geriatric Medicine/Gerontology Division of General Internal Medicine, and the Department of Psychiatry.
Medical College of Ohio, C. S. # 10008, Toledo, OH 43699. 相似文献
99.
100.