全文获取类型
收费全文 | 4056篇 |
免费 | 325篇 |
国内免费 | 24篇 |
专业分类
耳鼻咽喉 | 35篇 |
儿科学 | 147篇 |
妇产科学 | 61篇 |
基础医学 | 745篇 |
口腔科学 | 32篇 |
临床医学 | 454篇 |
内科学 | 856篇 |
皮肤病学 | 66篇 |
神经病学 | 482篇 |
特种医学 | 74篇 |
外科学 | 449篇 |
综合类 | 14篇 |
一般理论 | 2篇 |
预防医学 | 370篇 |
眼科学 | 42篇 |
药学 | 278篇 |
中国医学 | 9篇 |
肿瘤学 | 289篇 |
出版年
2024年 | 2篇 |
2023年 | 40篇 |
2022年 | 54篇 |
2021年 | 102篇 |
2020年 | 60篇 |
2019年 | 102篇 |
2018年 | 111篇 |
2017年 | 72篇 |
2016年 | 82篇 |
2015年 | 105篇 |
2014年 | 154篇 |
2013年 | 203篇 |
2012年 | 312篇 |
2011年 | 343篇 |
2010年 | 171篇 |
2009年 | 172篇 |
2008年 | 294篇 |
2007年 | 287篇 |
2006年 | 283篇 |
2005年 | 280篇 |
2004年 | 261篇 |
2003年 | 280篇 |
2002年 | 221篇 |
2001年 | 31篇 |
2000年 | 20篇 |
1999年 | 33篇 |
1998年 | 40篇 |
1997年 | 51篇 |
1996年 | 31篇 |
1995年 | 23篇 |
1994年 | 31篇 |
1993年 | 33篇 |
1992年 | 9篇 |
1991年 | 14篇 |
1990年 | 11篇 |
1989年 | 8篇 |
1988年 | 6篇 |
1987年 | 6篇 |
1986年 | 12篇 |
1985年 | 2篇 |
1984年 | 11篇 |
1983年 | 5篇 |
1982年 | 7篇 |
1981年 | 7篇 |
1980年 | 5篇 |
1979年 | 3篇 |
1978年 | 5篇 |
1977年 | 2篇 |
1964年 | 1篇 |
1962年 | 1篇 |
排序方式: 共有4405条查询结果,搜索用时 15 毫秒
61.
Herberz Chantal Steidl Ralph Werner Pascal Hagen Julia 《Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz》2018,61(3):298-303
Bundesgesundheitsblatt - Gesundheitsforschung - Gesundheitsschutz - Digitale Gesundheitsprodukte und -dienstleistungen beginnen sowohl die Versorgung von Kranken als auch die Prävention... 相似文献
62.
Griffith J Caron CD Desrosiers J Thibeault R 《Canadian journal of occupational therapy. Revue canadienne d'ergothérapie》2007,74(2):78-90
BACKGROUND: In the Canadian Model of Occupational Performance, meaningful occupation involves interaction between spirituality and environment. However little research exists on the process of giving meaning to occupation. PURPOSE: This study explored both meaningful occupation and the definition of spirituality from the perspective of community-dwelling older adults with autonomy loss. METHOD: Using a qualitative approach, grounded theory method of Glaser and Strauss (1967), eight cognitively intact persons were interviewed individually. RESULTS: The process of giving meaning to occupation involves an intrinsic link between identity and meaningful occupation, with identity being central to the person. Following autonomy loss, a process of adjusting identity, involving social, psychological and spiritual aspects, occurs over time. Spirituality is defined in terms of its close links to religion and belief in a benevolent greater power. IMPLICATIONS OF RESEARCH: This study contributes to the discussion of the concepts of spirituality, identity and meaning in occupational therapy. 相似文献
63.
64.
Moshe Phillip MD Chantal Mathieu MD Marcus Lind PhD Eiichi Araki MD Paolo di Bartolo MD Richard Bergenstal MD Simon Heller MD Lars Hansen MD Markus Florian Scheerer PhD Fredrik Thoren PhD Niki Arya MSc John Xu PhD Nayyar Iqbal MD Paresh Dandona MD DEPICT- DEPICT- Investigators 《Diabetes, obesity & metabolism》2021,23(2):549-560
65.
Sinu Bessy Abraham Siddharth Arunachalam Alex Zhong Pratik Agrawal Ohad Cohen Chantal M. McMahon 《Journal of diabetes science and technology》2021,15(1):91
Background:Most standalone real-time continuous glucose monitoring (RT-CGM) systems provide predictive low and high sensor glucose (SG) threshold alerts. The durations and risk of low and high SG excursions following Guardian™ Connect CGM system predictive threshold alerts were evaluated.Methods:Continuous glucose monitoring system data uploaded between January 2, 2017 and May 22, 2018 by 3133 individuals using multiple daily injections (MDIs) or continuous subcutaneous insulin infusion (CSII) therapy were deidentified and retrospectively analyzed. Glucose excursions were defined as SG values that went beyond a preset low or high SG threshold for ≥15 minutes. For a control group, thresholds were based on the median of the low SG threshold limit (70 mg/dL) and the high SG threshold limit (210 mg/dL) preset by all system users. During periods when alerts were not enabled, timestamps were identified when a predictive alert would have been triggered. The time before low horizon was 17.5 minutes and the time before high horizon was 15 minutes, of all users who enabled alerts. Excursions occurring after a low SG or high SG predictive alert were segmented into prevented, ≤20, 20-60, and >60 minutes.Results:Excursions were prevented after 59% and 39% of low and high SG predictive alerts, respectively. The risk of a low or high excursion occurring was 1.9 (P < 0.001, 95% CI, 1.88-1.93) and 3.3 (P < 0.001, 95% CI, 3.20-3.30) times greater, respectively, when alerts were not enabled.Conclusions:The predictive alerts of the RT-CGM system under study can help individuals living with diabetes prevent some real-world low and high SG excursions. This can be especially important for those unable to reach or maintain glycemic control with basic RT-CGM or CSII therapy. 相似文献
66.
Chan KS Wenzel S Orlando M Montagnet C Mandell W Becker K Ebener P 《The American journal of drug and alcohol abuse》2004,30(4):871-891
Prior research has demonstrated that therapeutic communities (TCs) are effective at improving posttreatment outcomes for substance abusers. However, little is known about the in-treatment experience for clients with different backgrounds, experiences, and needs. The aim of this study is to examine the in-treatment experience for different clients by exploring the relationships between treatment process and client characteristics. A comprehensive measure of treatment process, operationalized as Community Environment and Personal Change and Development and change was administered to 447 adults and 148 adolescents receiving treatment at community-based TC programs in New York, California, and Texas. Data on demographic characteristics, substance use and treatment history, and client risk factors were extracted from intake interviews and analyzed separately for adolescent and adult residents. Multivariate general linear models were used to examine the effect of client variables on treatment process, after controlling for treatment duration and program effects. Within adult programs, clients who were 25 years or older, female, and had a prior drug treatment experience had higher Community Environment scores. Adolescents with one or more arrests within the past 2 years had lower scores on both process dimensions of Community Environment and Personal Development and Change. Our results indicate the need to understand why adult clients who are younger, male, and have no prior treatment history and adolescent clients with recent arrests reported lower ratings of treatment process. Future research should also examine the role of modifiable mediators so that appropriate strategies to enhance therapeutic engagement may be developed as necessary. 相似文献
67.
68.
Chantal Quispel Mieke J. van Veen Christianne Zuijderhoudt Eric A. P. Steegers Witte J. G. Hoogendijk Erwin Birnie Gouke J. Bonsel Mijke P. Lambregtse-van den Berg 《Maternal and child health journal》2014,18(9):2089-2097
To identify Psychopathology, Psychosocial problems and substance use (PPS) as predictors of adverse pregnancy outcomes, two screen-and-advice instruments were developed: Mind2Care (M2C, self-report) and Rotterdam Reproductive Risk Reduction (R4U, professional’s checklist). To decide on the best clinical approach of these risks, the performance of both instruments was compared. Observational study of 164 pregnant women who booked at two midwifery practices in Rotterdam. Women were consecutively screened with M2C and R4U. For referral to tailored care based on specific PPS risks, inter-test agreement of single risks was performed in terms of overall accuracy and positive accuracy (risk present according to both instruments). With univariate regression analysis we explored determinants of poor agreement (<90 %). For triage based on risk accumulation and for detecting women-at-risk for adverse birth outcomes, M2C and R4U sum scores were compared. Overall accuracy of single risks was high (mean 93 %). Positive accuracy was lower (mean 46 %) with poorest accuracy for current psychiatric symptoms. Educational level and ethnicity partly explained poor accuracy (p < 0.05). Overall low PPS prevalence decreased the statistical power. For triage, M2C and R4U sum scores were interchangeable from sum scores of five or more (difference <1 %). The probability of adverse birth outcomes similarly increased with risk accumulation for both instruments, identifying 55–75 % of women-at-risk. The self-report M2C and the professional’s R4U checklist seem interchangeable for triage of women-at-risk for PPS or adverse birth outcomes. However, the instruments seem to provide complementary information if used as a guidance to tailored risk-specific care. 相似文献
69.
Thierry Poynard Valentina Peta Olivier Deckmyn Mona Munteanu Joseph Moussalli Yen Ngo Marika Rudler Pascal Lebray Raluca Pais Luminita Bonyhay Frederic Charlotte Vincent Thibault Laetitia Fartoux Olivier Lucidarme Daniel Eyraud Olivier Scatton Eric Savier Marc Antoine Valantin An Ngo Fabienne Drane Olivier Rosmorduc Franoise Imbert‐Bismut Chantal Housset Dominique Thabut Vlad Ratziu 《Alimentary pharmacology & therapeutics》2019,49(3):308-320
70.
Vallet Nicolas Ertault Marjan Delaye Jean-Baptiste Chalopin Thomas Villate Alban Drieu La Rochelle Laurianne Lejeune Julien Foucault Amlie Eloit Martin Barin-Le Guellec Chantal Hrault Olivier Colombat Philippe Gyan Emmanuel 《Annals of hematology》2020,99(2):229-239
Annals of Hematology - The prognostic significance of hypercalcemia in lymphoma has only been studied on small series to date. We conducted a retrospective, monocentric, matched-control study that... 相似文献