全文获取类型
收费全文 | 4449篇 |
免费 | 339篇 |
国内免费 | 34篇 |
专业分类
耳鼻咽喉 | 31篇 |
儿科学 | 193篇 |
妇产科学 | 155篇 |
基础医学 | 497篇 |
口腔科学 | 114篇 |
临床医学 | 635篇 |
内科学 | 941篇 |
皮肤病学 | 63篇 |
神经病学 | 356篇 |
特种医学 | 410篇 |
外科学 | 403篇 |
综合类 | 177篇 |
一般理论 | 2篇 |
预防医学 | 293篇 |
眼科学 | 37篇 |
药学 | 307篇 |
中国医学 | 1篇 |
肿瘤学 | 207篇 |
出版年
2022年 | 24篇 |
2021年 | 69篇 |
2020年 | 43篇 |
2019年 | 71篇 |
2018年 | 86篇 |
2017年 | 52篇 |
2016年 | 58篇 |
2015年 | 66篇 |
2014年 | 107篇 |
2013年 | 132篇 |
2012年 | 180篇 |
2011年 | 175篇 |
2010年 | 137篇 |
2009年 | 121篇 |
2008年 | 144篇 |
2007年 | 172篇 |
2006年 | 175篇 |
2005年 | 152篇 |
2004年 | 162篇 |
2003年 | 198篇 |
2002年 | 163篇 |
2001年 | 158篇 |
2000年 | 141篇 |
1999年 | 142篇 |
1998年 | 111篇 |
1997年 | 105篇 |
1996年 | 108篇 |
1995年 | 75篇 |
1994年 | 59篇 |
1993年 | 68篇 |
1992年 | 102篇 |
1991年 | 79篇 |
1990年 | 89篇 |
1989年 | 107篇 |
1988年 | 89篇 |
1987年 | 91篇 |
1986年 | 97篇 |
1985年 | 93篇 |
1984年 | 35篇 |
1983年 | 41篇 |
1982年 | 35篇 |
1981年 | 29篇 |
1980年 | 35篇 |
1979年 | 44篇 |
1978年 | 37篇 |
1977年 | 39篇 |
1976年 | 36篇 |
1975年 | 28篇 |
1974年 | 25篇 |
1973年 | 35篇 |
排序方式: 共有4822条查询结果,搜索用时 31 毫秒
1.
Isolated patellofemoral arthritis is an increasingly recognized entity, and is usually associated with previous patellofemoral dysplasia or instability. Patellofemoral arthroplasty (PFA) has evolved significantly in recent years, both in terms of implant design and importantly in the understanding of appropriate patient selection. This review outlines the indications and investigations for PFA, provides a brief history of the development of contemporary implants, and presents the clinical outcomes for the prostheses most commonly used in the UK. In addition, it provides a detailed surgical technique for implantation of an onlay implant, with tips on how to optimize patellofemoral biomechanics and thus achieve a consistently good outcome. 相似文献
2.
3.
Sonoelasticity imaging of prostate cancer: in vitro results 总被引:2,自引:0,他引:2
4.
A general overview of the literature concerning the development of diabetic neuropathic arthropathy is discussed. A case report is presented dealing with spontaneous fractures of the lesser metatarsal in a patient with an amputated hallux and peripheral neuropathy secondary to diabetes mellitus. 相似文献
5.
A metropolitan experience with infrainguinal revascularization. Operative risk and late results in northeastern Ohio 总被引:1,自引:0,他引:1
T D Rafferty J C Avellone C J Farrell N R Hertzer F R Plecha R S Rhodes W V Sharp J M Rogers 《Journal of vascular surgery》1987,6(4):365-371
Despite being of fundamental importance, the late results of major arterial reconstruction rarely have been documented throughout a large metropolitan area. In this study of 932 patients entered into the computer registry of the Cleveland Vascular Society, 19 surgeons representing 13 community hospitals and referral centers in Cleveland and Akron report the intermediate-term outcome during a mean interval of 35 months after infrainguinal lower extremity revascularization performed in northeastern Ohio from 1978 through 1982. Operative risk (5%), the early amputation rate (7%), and actuarial 5-year survival (48% to 55%) for patients with rest pain or tissue necrosis were significantly worse (p less than 0.05) than comparable figures (0.6%, 0%, and 77%, respectively) for others who underwent procedures for disabling claudication. Although both materials had similar success above the knee, the cumulative 3-year patency rate of autogenous vein bypass to the distal popliteal (69% to 88%; p less than 0.05) and tibioperoneal arteries (43%; 0.05 less than p less than 0.1) was superior to the results of polytetrafluoroethylene grafts (32% to 50% and 19%, respectively). Moreover, polytetrafluoroethylene grafts required reoperations at three times the rate of vein grafts to maintain limb salvage. 相似文献
6.
Joan M. Farrell Ida A. Shaw 《Journal of behavior therapy and experimental psychiatry》2009,40(2):317-328
This study tests the effectiveness of adding an eight-month, thirty-session schema-focused therapy (SFT) group to treatment-as-usual (TAU) individual psychotherapy for borderline personality disorder (BPD). Patients (N = 32) were randomly assigned to SFT-TAU and TAU alone. Dropout was 0% SFT, 25% TAU. Significant reductions in BPD symptoms and global severity of psychiatric symptoms, and improved global functioning with large treatment effect sizes were found in the SFT-TAU group. At the end of treatment, 94% of SFT-TAU compared to 16% of TAU no longer met BPD diagnosis criteria (p < .001). This study supports group SFT as an effective treatment for BPD that leads to recovery and improved overall functioning. 相似文献
7.
8.
Cynthia Farrell 《Dimensions of critical care nursing》2004,23(6):264-269
Advanced practice nurses within acute care settings are responsible for providing healthcare to a rapidly expanding population of elderly patients. Medical advances have contributed to the longevity of the American population, resulting in an increase in age-related disease that can lead to depression. It is important for acute care nurses to become familiar with the various classes of antidepressant medications and the implications for their use. 相似文献
9.
Bernard Farrell 《Journal of diabetes science and technology》2007,1(2):245-250
The continuous glucose monitor market is just starting to develop. Current trends in the availability of diabetes information tools highlight the need for standard data presentation for continuous glucose monitors. These trends and their implications are discussed. This article proposes a set of standards for blood glucose data presentation. If device manufacturers adopt these standards, they will ensure that their continuous glucose monitors meet both the short-term and the long-term needs of users. This should increase the demand for these monitors and enable future device developments that appeal to a wider range of users. 相似文献
10.
A T Farrell I Papadouli A Hori M Harczy B Harrison W Asakura M Marty R Dagher R Pazdur 《Annals of oncology》2006,17(6):889-896
PURPOSE: This paper summarizes the role of external advisors in oncology drug development and regulation from a global perspective. DESIGN: Recently, representatives from the United States Food and Drug Administration, European Medicines Agency, the Japanese Pharmaceuticals and Medical Devices Agency, the Australian Therapeutic Goods Administration and Health Canada held a meeting in conjunction with the American Society of Clinical Oncology meeting. The role of external advisors in oncology drug development and regulation in each of these jurisdictions was presented and discussed. RESULTS: All regulatory bodies described have experience with two forms of outside expertise: advice from individual experts and advice from a group of experts assembled as an advisory group. Regulatory jurisdictions use individual experts variably. In some regions, individual experts provide advice based on knowledge and experience during the drug development phase or in the planning phase for the submission of a drug registration package. In other regions, these individuals serve as external evaluators with the primary responsibility for the review of a clinical trials package submitted for drug registration. Advisory boards have been formalized in all jurisdictions discussed. Advisory boards have a role in discussing specific applications as well as broad policy issues. A common theme is a composition of a core panel of experts with augmentation by additional expertise as needed for consideration of specific scientific questions. In all jurisdictions, advisory board recommendations are not binding on the regulatory body. CONCLUSIONS: Global oncology drug development and registration involves the use of experts by regulatory authorities. The types of experts needed, the expert's role and the transparency of the advisory process reflect the individual needs in different regions. 相似文献