全文获取类型
收费全文 | 3657篇 |
免费 | 256篇 |
国内免费 | 46篇 |
专业分类
耳鼻咽喉 | 21篇 |
儿科学 | 130篇 |
妇产科学 | 51篇 |
基础医学 | 388篇 |
口腔科学 | 58篇 |
临床医学 | 436篇 |
内科学 | 879篇 |
皮肤病学 | 50篇 |
神经病学 | 141篇 |
特种医学 | 359篇 |
外科学 | 544篇 |
综合类 | 253篇 |
一般理论 | 1篇 |
预防医学 | 243篇 |
眼科学 | 23篇 |
药学 | 205篇 |
2篇 | |
中国医学 | 32篇 |
肿瘤学 | 143篇 |
出版年
2022年 | 45篇 |
2021年 | 55篇 |
2020年 | 41篇 |
2019年 | 27篇 |
2018年 | 33篇 |
2017年 | 40篇 |
2016年 | 48篇 |
2015年 | 62篇 |
2014年 | 70篇 |
2013年 | 126篇 |
2012年 | 142篇 |
2011年 | 160篇 |
2010年 | 121篇 |
2009年 | 136篇 |
2008年 | 126篇 |
2007年 | 156篇 |
2006年 | 161篇 |
2005年 | 127篇 |
2004年 | 113篇 |
2003年 | 119篇 |
2002年 | 121篇 |
2001年 | 91篇 |
2000年 | 99篇 |
1999年 | 77篇 |
1998年 | 102篇 |
1997年 | 100篇 |
1996年 | 93篇 |
1995年 | 90篇 |
1994年 | 56篇 |
1993年 | 59篇 |
1992年 | 66篇 |
1991年 | 50篇 |
1990年 | 48篇 |
1989年 | 62篇 |
1988年 | 74篇 |
1987年 | 69篇 |
1986年 | 63篇 |
1985年 | 62篇 |
1984年 | 45篇 |
1983年 | 37篇 |
1982年 | 28篇 |
1980年 | 24篇 |
1979年 | 23篇 |
1978年 | 29篇 |
1976年 | 29篇 |
1959年 | 24篇 |
1958年 | 29篇 |
1956年 | 30篇 |
1955年 | 43篇 |
1954年 | 36篇 |
排序方式: 共有3959条查询结果,搜索用时 15 毫秒
2.
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
Background
One approach to boost influenza vaccination coverage has been to expand immunization authority. In 2012, the province of Ontario gave community pharmacists the authority to administer the influenza vaccine.Objective
This study investigates the perspectives of Ontario pharmacy patrons, who had not recently received this vaccine from a pharmacist, regarding this pharmacist service.Methods
A survey was administered in six Ontario community pharmacies to pharmacy patrons who had not received an influenza vaccination from a pharmacist during the previous year. The instrument included questions about influenza vaccination, and knowledge of and attitudes toward vaccines and pharmacist-administered immunization.Results
A total of 541 pharmacy patrons completed the survey (53.9% response rate). About one-third (30.5%) of respondents were not aware that pharmacists could give the influenza vaccine, with younger individuals being less likely to be aware (OR 0.48, 95% CI 0.29–0.77, p?<?0.05) and less likely to receive the vaccine annually (OR 0.28, 95% CI 0.19–0.42, p?<?0.05). Leading reasons respondents gave as to why they did not receive their influenza vaccine from a pharmacist included not wanting or feeling they needed to be immunized (41.6%) and being used to receiving the vaccine from a physician (16.5%). Concerns about the experience and training of pharmacists and lack of privacy in a community pharmacy were uncommon.Conclusion
Reduced awareness of the availability of pharmacist-provided influenza vaccine is still common. Pharmacists have a significant opportunity to address lack of awareness and vaccine hesitancy issues. They can promote this service to increase influenza vaccination rates among pharmacy patrons who do not utilize this professional service. 相似文献3.
Dr. Arni Raghavendrarao Raghuram M.Ch. Subbiah Kumar MD Kathamuthu Balamurugan DA Arulmurugan DA Ramiah Krishnan M.Ch. Perichiappan Sivakami BS Eluvathingal Varghese John M.Ch. 《Indian Journal of Thoracic and Cardiovascular Surgery》2006,22(3):178-181
Background Beating heart surgery has now become the commonest technique of doing Coronary Artery Bypass Graft Surgery (CABG) in our country.
It is being used even in such high risk situations like diffuse coronary disease and Critical Left Main stem Stenosis (LMCS)
with good results. The aim of this study is to retrospectively review our results in Off-Pump Coronary Artery Bypass Surgery
(OPCAB) in patients with critical left main stem stenosis.
Methods This study is a retrospective analysis of the data of patients who underwent primary coronary artery bypass surgery. During
the period from April 2003 to September 2005 a total of 64 patients underwent OPCAB procedure for critical LMCS. During the
same period 10 patients underwent CABG on Cardio Pulmonary Bypass (CPB). The age range was 36–77yrs. The sex distribution
was M: F 53∶10. Ten patients were done as emergency. 2 of them were on Intra Aortic Balloon Pump (IABP) support preoperatively.
10 patients were high risk with a Euro score of ≥5.
Results Left Internal Mammary Artery (LIMA) was used in 78% of cases. Average grafts per patient was 2.96. The median ventilation
time was 5.91 hrs. New IABP insertion in postoperative period was required in 1 patient. One patient was reexplored for bleeding.
There was one perioperative myocardial infarction. 57% of patients did not need any blood transfusion. There was no conversion
to CPB. There was no operative mortality. Inotropes were used in ten cases.
Conclusions OPCAB is a safe method of revascularization in patients with critical LMCS. Preoperative IABP is useful in patients with cardiogenic
shock. However, there is a place for CPB in patients needing additional procedures like Mitral Valve repair (MV repair) or
Dor's procedure or when the vessels are very diffusely diseased. Those patients who are unstable despite IABP support may
be managed by Beating heart On Pump (BHOP) technique. 相似文献
4.
5.
6.
7.
氟西汀与阿米替林治疗105例抑郁障碍病人的双盲对照试验 总被引:6,自引:4,他引:2
目的:评价国产氟西汀的抗抑郁作用及安全性。方法:采用随机、双盲对照、多中心研究,分为国产氟西汀组57例(男性22例,女性35例;年龄40±s13a),口服氟西汀20mg,qd,阿米替林57例(男性27例,女性30例;年龄40±14a),口服阿米替林75mg,bid,疗程6wk。结果:氟西汀治疗抑郁障碍的疗效与阿米替林相当,总有效率分别为85%及92%(P>0.05);氟西汀组的主要副作用有口干、便秘、恶心、心动过速等,但较之阿米替林程度轻且发生率低。结论:氟西汀的抗抑郁作用与阿米替林相当,副作用少,服用方便。 相似文献
8.
The role of control activity levels in the reported strain differences to the behavioral effects of drugs in mice 总被引:1,自引:0,他引:1
G R Wenger 《Pharmacology, biochemistry, and behavior》1989,32(1):241-247
The effect of d-amphetamine (3-100 mumoles/kg), scopolamine (0.3-100 mumoles/kg) and morphine (3-1000 mumoles/kg) were studied on the spontaneous motor activity (SMA) of four strains of mice: CF-1, DBA/2, C57BL/6 and CD-1. All three drugs increased the SMA of the CF-1, C57BL/6, and CD-1 strains at low to moderate doses and decreased SMA at higher doses. In the DBA/2 strain, d-amphetamine and scopolamine increased SMA at low doses and decreased SMA at high doses; only decreases in SMA were observed with morphine. When the drug effect was expressed relative to control levels of SMA, large apparent strain differences were shown to exist for all three drugs. In general, these strain differences were shown to exist for all three drugs. However, the majority of these strain differences could be attributed to the large differences which existed in the control level of SMA among the four strains. One important exception to this statement was shown to exist. The DBA strain responded differently (only decreases in SMA were observed) to morphine than did the other three strains. This decrease was not related to the control SMA level and could not be antagonized by naloxone (3 mumoles/kg, IP). 相似文献
9.
Philip Peng FRCPC Manon Choiniere PhD Dominique Dion MD MSc Howard Intrater FRCPC Sandra LeFort PhD Mary Lynch FRCPC May Ong FRCPC Saifee Rashiq MSc DA FRCPC Gregg Tkachuk PhD Yves Veillette FRCPC 《Journal canadien d'anesthésie》2007,54(12):977-984
PURPOSE: The objective of this survey was to examine the services offered by multidisciplinary pain treatment facilities (MPTFs) across Canada and to compare access to care at these MPTFs. METHODS: A MPTF was defined as a clinic that advertised specialized multidisciplinary services for the diagnosis and management of patients with chronic pain, having a minimum of three different health care disciplines (including at least one medical speciality) available and integrated within the facility. The search method included approaching all hospital and rehabilitation centre administrators in Canada, the Insurance Bureau of Canada, the Workplace Safety and Insurance Board or similar body in each province. Designated investigators were responsible for confirming and supplementing MPTFs from the preliminary list for each province. Administrative leads at each eligible MPTF were asked to complete a detailed questionnaire regarding their MPTF infrastructure, clinical, research, teaching and administrative activities. RESULTS: Completed survey forms were received from 102 MPTFs (response rate 85%) with 80% concentrated in major cities, and none in Prince Edward Island and the Territories. The MPTFs offer a wide variety of treatments including non-pharmacological modalities such as interventional, physical and psychological therapy. The median wait time for a first appointment in public MPTFs is six months, which is approximately 12 times longer than non-public MPTFs. Eighteen pain fellowship programs exist in Canadian MPTFs and 64% engage in some form of research activities CONCLUSION: Canadian MPTFs are unable to meet clinical demands of patients suffering from chronic pain, both in terms of regional accessibility and reasonable wait time for patients' first appointment. 相似文献
10.
The effects of cardiovascular disease are substantial in women, yet cardiovascular preventive therapies for women are underused.
The prevalence and impact of many coronary risk factors differ by gender. Coronary risk interventions (eg, using aspirin)
have diverse outcomes in women and men. Results from studies of preventive interventions specific to women (eg, menopausal
hormone therapy) have changed preventive recommendations and clinical practice. 相似文献