AChE inhibitionOther cholinesterasesPhysical propertiesLatency and toxicityPharmacological propertiesClinical manifestationsTreatmentPyridostigmineAtropinePralidoxime
  首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1379266篇
  免费   103697篇
  国内免费   4405篇
耳鼻咽喉   17191篇
儿科学   44808篇
妇产科学   37212篇
基础医学   203463篇
口腔科学   36696篇
临床医学   134656篇
内科学   266219篇
皮肤病学   27065篇
神经病学   115607篇
特种医学   49937篇
外国民族医学   366篇
外科学   191464篇
综合类   29432篇
现状与发展   1篇
一般理论   514篇
预防医学   118700篇
眼科学   30022篇
药学   102088篇
  7篇
中国医学   3214篇
肿瘤学   78706篇
  2021年   11798篇
  2019年   12483篇
  2018年   17347篇
  2017年   13009篇
  2016年   14041篇
  2015年   16139篇
  2014年   22213篇
  2013年   34002篇
  2012年   47186篇
  2011年   49918篇
  2010年   28771篇
  2009年   26404篇
  2008年   45344篇
  2007年   47979篇
  2006年   48010篇
  2005年   46317篇
  2004年   44090篇
  2003年   41907篇
  2002年   40608篇
  2001年   61492篇
  2000年   63136篇
  1999年   52911篇
  1998年   15083篇
  1997年   13667篇
  1996年   13455篇
  1995年   12766篇
  1994年   11881篇
  1993年   11195篇
  1992年   41960篇
  1991年   41129篇
  1990年   39817篇
  1989年   37695篇
  1988年   34921篇
  1987年   33983篇
  1986年   32438篇
  1985年   30971篇
  1984年   23309篇
  1983年   19805篇
  1982年   11946篇
  1979年   21009篇
  1978年   15006篇
  1977年   12226篇
  1976年   12029篇
  1975年   12255篇
  1974年   14976篇
  1973年   14627篇
  1972年   13503篇
  1971年   12546篇
  1970年   11636篇
  1969年   10543篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
951.
There is limited information regarding oral health status and other predictors of oral health‐related quality of life. An association between oral health status and perceived oral health‐related quality of life (OHQOL) might help clinicians motivate patients to prevent oral diseases and improve the outcome of some dental public health programs. This study evaluated the relationship between older persons' OHQOL and their functional dentition, caries, periodontal status, chronic diseases, and some demographic characteristics. A group of 733 low‐income elders (mean age 72.7 ISD=4.71, 55.6% women, 55.1% members of ethnic minority groups in the U.S. and Canada) enrolled in the TEETH clinical trial were interviewed and examined as part of their fifth annual visit for the trial. OHQOL was measured by the Geriatric Oral Health Assessment Index (GOHAI); oral health and occlusal status by clinical exams and the Eichner Index; and demographics via interviews. Elders who completed the four‐year assessment had an average of 21.5 teeth (SD=6.9). with 8.5 occluding pairs (SD=4.6), and 32% with occlusal contacts in all four occluding zones. Stepwise multiple regressions were conducted to predict total GOHAI and its subscores (Physical, Social, and Worry). Functional dentition was a less significant predictor than ethnicity and being foreign‐bom. These variables, together with gender, years since immigrating, number of carious roots, and periodontal status, could predict 32% of the variance in total GOHAI, 24% in Physical, 27% in Social, and 21 % in the Worry subscales. These findings suggest that functional dentition and caries influence older adults' OHQOL, but that ethnicity and immigrant status play a larger role.  相似文献   
952.
953.
Alcohol and other drug (AOD) use behaviors of health professions students (HPS) were assessed by surveying both university-based HPS and other nursing programs in a Midwestern state in 1999. Response was 2,646 (56.4%) of surveyed students. Family history of alcohol-related and drug-related problems were reported by 39.8% and 13.9%, respectively, with 42.6% of respondents reporting one or both. Among nursing respondents, 48.1%, 19.2% and 51.1%, respectively, reported family problems with alcohol, drugs, or one or both. Past-year alcohol use was comparable to undergraduate college students (UCS) nationally (83%); heavy drinking, tobacco and recreational drug use by HPS were lower. Past year drug use was highest among medical students. Marijuana was the predominant illicit drug; medical students and males most often reported use. Health professions educational systems should proactively address student AOD prevention, education and assistance needs.  相似文献   
954.
Geoghegan  James; Tong  Jeffrey L 《CEACCP》2006,6(6):230-234
The first 150 words of the full text of this article appear below. Key points
  • Chemical personal protective equipment must be wornwhen in contact with contaminated casualties.
  • Recognizing theclinical features of chemical warfare agent poisoning allowssupportive treatment and appropriate antidotes to be promptlyadministered.
  • The mnemonic DUMBELS describes the muscarinicfeatures of the nerve agent poisoning toxidrome.
  • There areeffective antidotes for poisoning with nerve agents, blood agents(metabolic poisons), botulinum toxin and kolokol-1.
  • There areno specific antidotes for blistering agents (vesicants) andchoking agents.
  Chemical warfare (CW) agents are chemical substances that havea direct toxic effect on plants, animals and humans. Classifiedaccording to their physiological effects, agents effective againsthumans include nerve agents, blistering agents (vesicants),blood agents, choking agents and toxins. Incapacitating, vomiting,psychoactive and riot control agents (e.g. CS gas) also exist.1 All personnel in contact with contaminated casualties must wearthe appropriate level of chemical personal protective equipment(CPPE) until adequate decontamination is . . . [Full Text of this Article]
   Nerve agents