全文获取类型
收费全文 | 20975篇 |
免费 | 1832篇 |
国内免费 | 39篇 |
专业分类
耳鼻咽喉 | 263篇 |
儿科学 | 649篇 |
妇产科学 | 584篇 |
基础医学 | 2778篇 |
口腔科学 | 302篇 |
临床医学 | 2835篇 |
内科学 | 3752篇 |
皮肤病学 | 326篇 |
神经病学 | 2105篇 |
特种医学 | 590篇 |
外国民族医学 | 1篇 |
外科学 | 2528篇 |
综合类 | 332篇 |
一般理论 | 15篇 |
预防医学 | 2519篇 |
眼科学 | 519篇 |
药学 | 1358篇 |
中国医学 | 23篇 |
肿瘤学 | 1367篇 |
出版年
2023年 | 120篇 |
2022年 | 201篇 |
2021年 | 500篇 |
2020年 | 338篇 |
2019年 | 419篇 |
2018年 | 566篇 |
2017年 | 432篇 |
2016年 | 438篇 |
2015年 | 481篇 |
2014年 | 695篇 |
2013年 | 995篇 |
2012年 | 1334篇 |
2011年 | 1339篇 |
2010年 | 737篇 |
2009年 | 687篇 |
2008年 | 1115篇 |
2007年 | 1085篇 |
2006年 | 1074篇 |
2005年 | 1104篇 |
2004年 | 968篇 |
2003年 | 883篇 |
2002年 | 824篇 |
2001年 | 401篇 |
2000年 | 377篇 |
1999年 | 363篇 |
1998年 | 178篇 |
1997年 | 179篇 |
1996年 | 129篇 |
1995年 | 130篇 |
1994年 | 126篇 |
1992年 | 277篇 |
1991年 | 275篇 |
1990年 | 261篇 |
1989年 | 220篇 |
1988年 | 252篇 |
1987年 | 237篇 |
1986年 | 256篇 |
1985年 | 221篇 |
1984年 | 189篇 |
1983年 | 192篇 |
1982年 | 134篇 |
1981年 | 135篇 |
1980年 | 108篇 |
1979年 | 195篇 |
1978年 | 140篇 |
1977年 | 104篇 |
1976年 | 128篇 |
1975年 | 128篇 |
1974年 | 134篇 |
1973年 | 98篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
3.
Hommes Franziska Mohsenpour Amir Kropff Dana Pilgram Lisa Matusall Svenja von Philipsborn Peter Sell Kerstin 《Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz》2022,65(1):96-106
Bundesgesundheitsblatt - Gesundheitsforschung - Gesundheitsschutz - Akteure der öffentlichen Gesundheit (Public Health) tragen wesentlich zu Gesundheitsschutz, -förderung und... 相似文献
4.
Marion Feldman Mayssa’ El Husseini Elisabetta Dozio Elise Drain Rahmeth Radjack Marie Rose Moro 《Child Care in Practice》2019,25(2):215-226
ABSTRACTClose observation of the interactions between a traumatised mother and her infant son provides information on the modes of transmission of psychic trauma in the mother–infant dyad. Following the presentation of a current literature review on the theme, the subject of “radioactive residue” and counter-transference in the transmission of psychic trauma from mother to infant will be illustrated through a clinical case study that focuses on a Haitian mother and her two-year-old infant son who has been referred to a “transitional care nursery” in urban Paris. The encounter with this mother–infant dyad is analysed through observing the quality of the interactions that take place between the mother and infant in order to determine how a particularly traumatic narrative impacts the mother–infant relationship, in addition to relations with the clinician. Mother and infant respond to one another through the emission and reception of “radioactive residues” as hypothesized by Gampel. This clinical case study shows that there is a need to consider transcultural factors and collective experience and history when analysing traumatic events. Additionally, the case study shows that counter-transference can be an effective clinical tool for gaining access to an infant's experience as the recipient of a traumatic narrative. 相似文献
5.
Cost‐Effectiveness and Cost‐Utility Analysis of Spinal Cord Stimulation in Patients With Failed Back Surgery Syndrome: Results From the PRECISE Study
下载免费PDF全文
![点击此处可从《Neuromodulation》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Furio Zucco MD Roberta Ciampichini MSc Angelo Lavano MD Amedeo Costantini MD Marisa De Rose MD Paolo Poli MD Gianpaolo Fortini MD Laura Demartini MD Enrico De Simone MD Valentino Menardo MD Piero Cisotto MD Mario Meglio MD Luciana Scalone PhD Lorenzo G. Mantovani DSc 《Neuromodulation》2015,18(4):266-276
6.
Dana Franzen-Klein Mark Jankowski Charlotte L. Roy Hoa Nguyen-Phuc Da Chen Lorin Neuman-Lee 《Journal of toxicology and environmental health. Part A》2020,83(2):45-65
ABSTRACTDomestic chickens (Gallus gallus domesticus) were exposed to imidacloprid by gavage once daily for 7 consecutive days at 0, 0.03, 0.34, 3.42, 10.25, and 15.5 mg/kg/day (n = 20 per group; 5 6-week-old males, 5 6-week-old females, 5 9-week-old males, and 5 9-week-old females). The severity and duration of neurobehavioral abnormalities were recorded. Components of the innate and adaptive immune system were assessed with 7 standard functional assays. Temporary neurobehavioral abnormalities were observed in a dose-dependent manner, including muscle tremors, ataxia, and depressed mentation. Based upon mean clinical severity scores, the no observed adverse effect level (NOAEL) was 3.42 mg/kg/day, and the lowest observed adverse effect level (LOAEL) was 10.25 mg/kg/day. The effective dose value for the presence of any neurobehavioral abnormalities in 50% of the test group (ED50) was 4.62 ± 0.98 mg/kg/day. The ED50 for an adjusted score that included both severity and duration of neurobehavioral abnormalities was 11.24 ± 9.33 mg/kg/day. These ED50 values are equivalent to a 1 kg bird ingesting 29 or 70 imidacloprid treated soybean seeds respectively. Immunotoxicity was not documented, possible causes include the assays were insensitive, relevant immune functions were not examined, or imidacloprid is not immunotoxic at this dosing schedule in this species. Neurobehavioral abnormalities were a more sensitive indicator of the sublethal effects of imidacloprid than immunotoxicity. 相似文献
7.
Paola Gilsanz Maria M. Corrada Claudia H. Kawas Elizabeth Rose Mayeda M. Maria Glymour Charles P. Quesenberry Catherine Lee Rachel A. Whitmer 《Alzheimer's & dementia》2019,15(4):497-505
Introduction
Little is known about dementia incidence in diverse populations of oldest-old, the age group with highest dementia incidence.Methods
Incident dementia diagnoses from 1/1/2010 to 9/30/2015 were abstracted from medical records for 2350 members of an integrated health care system in California (n = 1702 whites, n = 375 blacks, n = 105 Latinos, n = 168 Asians) aged ≥90 in 2010. We estimated race/ethnicity-specific age-adjusted dementia incidence rates and implemented Cox proportional hazards models and Fine and Gray competing risk of death models adjusted for demographics and comorbidities in midlife and late-life.Results
Dementia incidence rates (n = 771 cases) were lowest among Asians (89.9/1000 person-years), followed by whites (96.9/1000 person-years), Latinos (105.8/1000 person-years), and blacks (121.5/1000 person-years). Cox regression and competing risk models estimated 28% and 36% higher dementia risk for blacks versus whites adjusting for demographics and comorbidities.Discussion
Patterns of racial/ethnic disparities in dementia seen in younger older adults continue after the age of 90 years, though smaller in magnitude. 相似文献8.
9.
Mhd Wasem Alsabbagh Dana Church Lisa Wenger John Papastergiou Lalitha Raman-Wilms Eric Schneider Nancy Waite 《Research in social & administrative pharmacy》2019,15(2):202-206