全文获取类型
收费全文 | 5399篇 |
免费 | 460篇 |
国内免费 | 21篇 |
专业分类
耳鼻咽喉 | 31篇 |
儿科学 | 176篇 |
妇产科学 | 113篇 |
基础医学 | 690篇 |
口腔科学 | 91篇 |
临床医学 | 639篇 |
内科学 | 1033篇 |
皮肤病学 | 57篇 |
神经病学 | 467篇 |
特种医学 | 313篇 |
外科学 | 745篇 |
综合类 | 119篇 |
一般理论 | 4篇 |
预防医学 | 612篇 |
眼科学 | 72篇 |
药学 | 380篇 |
中国医学 | 5篇 |
肿瘤学 | 333篇 |
出版年
2021年 | 61篇 |
2020年 | 56篇 |
2019年 | 56篇 |
2018年 | 72篇 |
2017年 | 82篇 |
2016年 | 68篇 |
2015年 | 96篇 |
2014年 | 144篇 |
2013年 | 201篇 |
2012年 | 225篇 |
2011年 | 231篇 |
2010年 | 189篇 |
2009年 | 154篇 |
2008年 | 205篇 |
2007年 | 249篇 |
2006年 | 203篇 |
2005年 | 201篇 |
2004年 | 228篇 |
2003年 | 219篇 |
2002年 | 226篇 |
2001年 | 212篇 |
2000年 | 203篇 |
1999年 | 146篇 |
1998年 | 76篇 |
1997年 | 85篇 |
1996年 | 70篇 |
1995年 | 81篇 |
1994年 | 59篇 |
1993年 | 77篇 |
1992年 | 103篇 |
1991年 | 119篇 |
1990年 | 126篇 |
1989年 | 120篇 |
1988年 | 114篇 |
1987年 | 108篇 |
1986年 | 96篇 |
1985年 | 88篇 |
1984年 | 66篇 |
1983年 | 67篇 |
1982年 | 43篇 |
1980年 | 31篇 |
1979年 | 58篇 |
1978年 | 50篇 |
1977年 | 35篇 |
1975年 | 36篇 |
1974年 | 34篇 |
1973年 | 30篇 |
1972年 | 35篇 |
1971年 | 28篇 |
1970年 | 30篇 |
排序方式: 共有5880条查询结果,搜索用时 15 毫秒
1.
2.
IntroductionInterprofessional learning (IPL) is a vital aspect of training in radiation oncology professions, yet is rarely delivered to those professionals who work most closely together in clinical practice. Scenario-based learning using simulation facilities provides a unique opportunity to facilitate this learning and this project aimed to determine the impact and value of this initiative.MethodsSmall groups comprising post-graduate diploma pre-registration therapeutic radiographers, medical physics trainees and radiation oncology registrars were challenged with 4 plausible and challenging radiotherapy scenarios within an academic simulation centre. Pre- and post-event completion of the “Readiness for Interprofessional Learning Scale” measured impact and a Likert-style survey gathered feedback from participants.ResultsThe session increased participants' teamwork and collaboration skills as well as strengthening professional identities. Participants reported high levels of enjoyment related to collaborative working, communication and observing other professionals deploying their technical skills and specialist knowledge.ConclusionAlthough beneficial, simulated scenarios offering equal opportunities for engagement across the professions are challenging to plan and timetabling issues between the 3 groups present significant difficulties. The safe environment and unique opportunity for these groups to learn together was particularly well received and future oncology-specific simulated scenario sessions are planned with larger cohorts.Implications for practiceSimulated scenario training can be used to improve team working across the radiotherapy interprofessional team and may have wider use in other specialist interdisciplinary team development. 相似文献
3.
José A. Lorente Pablo Cardinal-Fernández Diego Muñoz Fernando Frutos-Vivar Arnaud W. Thille Carlos Jaramillo Aida Ballén-Barragán José M. Rodríguez Oscar Peñuelas Guillermo Ortiz José Blanco Bruno Valle Pinheiro Nicolás Nin María del Carmen Marin Andrés Esteban Taylor B. Thompson 《Intensive care medicine》2015,41(11):1921-1930
4.
Carol Ball 《Intensive & critical care nursing》2006,22(3):127-129
5.
Addison's disease is rarely caused by metastatic cancer. We report a unique case of hypoadrenalism owing to metastatic transitional cell carcinoma of the bladder. The relevant literature is reviewed. 相似文献
6.
Bartczak Andi Weiss; Sangaiah Ramiah; Ball Louise M.; Warren Sarah H.; Gold Avram 《Mutagenesis》1987,2(2):101-105
Many polycyclic aromatic hydrocarbons containing peripherallyfused cyclopenta rings are believed to be activated primarilyby epoxidation of the cyclopenta ring. The cyclopenta epoxidesof a series of four cyclopenta benzanthracene derivatives, benz[e]aceanthrylene-5,6-oxide,benz[j]ace-anthrylene-1,2-oxide, benz(l)anthrylene-1,2-oxideand benz[k]acephenaceanthrylene-4,5-oxide were synthesized fromtheir parent hydrocarbons by formation of the bromohydrin followedby dehydrobromination, and characterized by u.v. vis,and 1H n.m.r. spectroscopy and mass spectrometry. The mutagenicityof these compounds was investigated in the Ames plate incorporationassay with Salmonella typhimurium strain TA98. All the oxideswere active without exogenous metabolic activation (170320His+ revertants per nanomole) and also toxic above 0.5 µg/plate.Addition of S9 protein did not increase, and generally decreased,the mutagenicity of the oxides, while toxicity was largely unchanged.These results are consistent with the postulated role of cyclopentaoxides as major contributors to the mutagenicity of the parentcompounds in the Ames assay. 相似文献
7.
8.
M J Ball 《The American journal of clinical nutrition》1991,53(4):916-922
Twenty-four malnourished patients requiring total parenteral nutrition were randomly assigned to receive a daily infusion of either Lipofundin MCT-LCT [a new lipid preparation containing medium-chain triglycerides (MCTs)], or Lipofundin S [a long-chain triglyceride (LCT) preparation] for 6-28 d. No adverse clinical effects were apparent in patients receiving the new emulsion. Hematological indices were unchanged. Plasma urea concentrations rose less on MCT-LCT than on LCT and the plasma bilirubin concentration was lower. Plasma ketones were higher immediately after the MCT-LCT infusion but not at other times. Triglyceride and fatty acid concentrations were similar. Insulin concentrations were higher on MCT-LCT than on LCT. Daily nitrogen balance values were not significantly different between the two groups. Urinary carnitine excretion fell dramatically on both lipids. 相似文献
9.
M K Shear G Ball M Fitzpatrick S Josephson J Klosko A Frances 《The Journal of nervous and mental disease》1991,179(8):468-472
This paper reports results of an open prospective study of 26 patients who met DSM-III criteria for panic disorder or agoraphobia with panic attacks. Cognitive-behavioral treatment alone produced clinically and statistically significant improvement in panic symptoms, including both full-blown and limited symptom episodes. In addition, the treatment produced improvement in associated symptoms of phobic avoidance and generalized anxiety. This work provides further preliminary indication of the usefulness of cognitive-behavioral strategies as an alternative to medication in symptom-oriented treatments. 相似文献
10.
Chad G. Ball Andrew W. Kirkpatrick Matthew Smith Robert H. Mulloy Leonard Tse Ian B. Anderson 《European journal of trauma and emergency surgery》2007,33(5):550-552
Abstract We report a case of SMV injury in a critically ill patient. The patient was a 19-year-old woman involved in a motor vehicle
collision. Her injuries included grade II splenic and renal lacerations, devascularized and lacerated right and transverse
colon, a transected transverse mesocolon, a massive shear injury of her abdominal wall, and two partial SMV transections.
At initial damage control laparotomy, the SMV was ligated, the devascularized bowel resected and a temporary abdominal closure
applied. At re-operation, a mesocaval shunt using saphenous vein was employed. The shunt failed and the patient required a
saphenous vein jump graft. Although visceral vascular injuries are rare, ligation of the SMV in a damage control situation
is acceptable. This case study is the first to discuss appropriate treatment when interruption to a patient's collateral visceral
venous drainage limits the surgeon’s ability to ligate. In these situations, bypass shunts may be successful. 相似文献