全文获取类型
收费全文 | 196793篇 |
免费 | 3391篇 |
国内免费 | 1537篇 |
专业分类
耳鼻咽喉 | 1280篇 |
儿科学 | 6951篇 |
妇产科学 | 3235篇 |
基础医学 | 19191篇 |
口腔科学 | 1870篇 |
临床医学 | 15354篇 |
内科学 | 34006篇 |
皮肤病学 | 862篇 |
神经病学 | 17813篇 |
特种医学 | 9851篇 |
外国民族医学 | 20篇 |
外科学 | 30701篇 |
综合类 | 5828篇 |
现状与发展 | 5篇 |
一般理论 | 5篇 |
预防医学 | 19383篇 |
眼科学 | 3523篇 |
药学 | 11824篇 |
34篇 | |
中国医学 | 2019篇 |
肿瘤学 | 17966篇 |
出版年
2024年 | 96篇 |
2023年 | 395篇 |
2022年 | 1072篇 |
2021年 | 1321篇 |
2020年 | 986篇 |
2019年 | 870篇 |
2018年 | 22730篇 |
2017年 | 18033篇 |
2016年 | 20156篇 |
2015年 | 1882篇 |
2014年 | 2146篇 |
2013年 | 1837篇 |
2012年 | 8501篇 |
2011年 | 22592篇 |
2010年 | 19776篇 |
2009年 | 12345篇 |
2008年 | 20493篇 |
2007年 | 22663篇 |
2006年 | 1625篇 |
2005年 | 3138篇 |
2004年 | 3961篇 |
2003年 | 4969篇 |
2002年 | 3008篇 |
2001年 | 712篇 |
2000年 | 973篇 |
1999年 | 708篇 |
1998年 | 556篇 |
1997年 | 569篇 |
1996年 | 349篇 |
1995年 | 345篇 |
1994年 | 301篇 |
1993年 | 182篇 |
1992年 | 234篇 |
1991年 | 223篇 |
1990年 | 251篇 |
1989年 | 174篇 |
1988年 | 159篇 |
1987年 | 135篇 |
1986年 | 116篇 |
1985年 | 104篇 |
1984年 | 51篇 |
1983年 | 49篇 |
1982年 | 46篇 |
1980年 | 50篇 |
1974年 | 54篇 |
1970年 | 42篇 |
1969年 | 51篇 |
1938年 | 61篇 |
1932年 | 56篇 |
1930年 | 46篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
Simon Bell Andrew J McLachlan Parisa Aslani Paula Whitehead Timothy F Chen 《Australia and New Zealand Health Policy》2005,2(1):29
The objective of this systematic review was to evaluate the impact of pharmacist delivered community-based services to optimise the use of medications for mental illness. Twenty-two controlled (randomised and non-randomised) studies of pharmacists' interventions in community and residential aged care settings identified in international scientific literature were included for review. Papers were assessed for study design, service recipient, country of origin, intervention type, number of participating pharmacists, methodological quality and outcome measurement. Three studies showed that pharmacists' medication counselling and treatment monitoring can improve adherence to antidepressant medications among those commencing treatment when calculated using an intention-to-treat analysis. Four trials demonstrated that pharmacist conducted medication reviews may reduce the number of potentially inappropriate medications prescribed to those at high risk of medication misadventure. The results of this review provide some evidence that pharmacists can contribute to optimising the use of medications for mental illness in the community setting. However, more well designed studies are needed to assess the impact of pharmacists as members of community mental health teams and as providers of comprehensive medicines information to people with schizophrenia and bipolar disorder 相似文献
72.
Statutory reimbursement agencies as well as private insurers throughout member states of the Organization for Economic Cooperation and Development (OECD) reimburse the cost of medicines on the basis of criteria that include robust clinical evidence, budget impact analysis, and incremental cost effectiveness. The Centers for Medicare and Medicaid Services (CMS) in the US are no exception to this rule and are, in principle, seeking to maximize benefit for their Medicare enrollees, whilst ensuring reasonable drug outlays for the small number of drugs that they reimburse. This paper provides a retrospective analysis of the way two functionally equivalent drugs are treated for reimbursement purposes by the CMS; the period under consideration was 2001–3. The two drugs, epoetin-α and darbepoetin-α, are used for the treatment of anemia in renal failure and in patients receiving chemotherapy. By reviewing the publicly available pharmacological and clinical data of epoetin-α and darbepoetin-α, the paper confirms the two drugs’ functional equivalence, despite their structural differences. The implications of dose conversion ratios and costs to Medicare are subsequently explored. It is argued that the issue of dose equivalence between epoetin-α and darbepoetin-α has significant implications for patients, practitioners, and payors. A payor’s perspective is adopted in this respect, whereby clinical evidence and pricing data are used simultaneously. Based on the clinical evidence, a dose conversion ratio for epoetin-α:darbepoetin-α is established, which achieves a comparable clinical effect for the two drugs and this is set to be <254IU:1μg. The incremental costs to Medicare are calculated subsequently. The Average Wholesale Price and the Outpatient Prospective Payment System rule that Medicare uses to reimburse providers are used and suggest that treatment of cancer patients with chemotherapy-related anemia with epoetin-α would save Medicare an estimated $US600 million each year. Patients would also benefit significantly in terms of lower co-payments for epoetin-α. The evidence is supportive of the decision made by the CMS to reimburse the two drugs at the rate reflecting the achievement of comparable clinical effects and therefore reducing the pass-through payments for darbepoetin-α to zero for the 2002–3 fiscal year. 相似文献
73.
我院是一所独立设置的成人医学高等学校.为促进学院整体工作的改革与发展,提高学院办学的社会效益和经济效益,提高教学质量,使学院各项工作更加科学化、规范化,2000年开始,根据学院工作重点和各部门工作的实际情况,我校实行了部门工作年度考核评估.在评估考核工作中,注重采用了激励措施,有效地提高了学院整体工作水平和管理干部的质量意识,取得了较好的实效.现介绍如下.…… 相似文献
74.
Objective: To study the diagnostic value of T2^*-weighted first-pass perfusion imaging in breast tumors. Methods: We analyzed the magnetic resonance imaging (MRI) information along with the pathological and immunohistochemistry results. Magnetic resonance imaging was performed in 28 patients with breast tumor. The time to signal intensity curves were generated according to the T2^*-weighted first-pass perfusion imaging. The curve's maximal signal intensity drop rate and maximal signal intensity decrease time were analyzed and compared with the pathological diagnoses after surgery. Results: Malignant breast lesions showed higher maximal signal intensity drop rate (44.69% ± 17.07 vs. 17.22% ±7.49, P 〈 0.001) than benign lesions, but there was no significant difference of maximal signal decrease time between those two lesions (23.94 s ± 4.92 vs. 20.02 s ± 6.83, P 〉 0.05). Conclusion: The T2^*-weighted first-pass perfusion imaging has enough sensitivity and specificity in breast tumor diagnosis. 相似文献
75.
76.
77.
A 16-year-old boy, the only affected member of the family, noticed early onset contracture of the elbows, and developed slowly progressive humeroperoneal weakness and atrophy, and bilateral equinus. The severe restriction of the forward flexion of the neck and thoracolumbar spine, resembled a rigid spine syndrome. An electrocardiogram showed atrioventricular conduction abnormalities. Muscle biopsy was consistent with mild myopathy. The overall conventional findings of a detailed electromyographic study in the limbs and erector trunci muscles, as well as the results of conduction velocity, automatic analysis of the voluntary pattern and single fiber electromyography studies were consistent with myopathy, although some atypical findings were found. The controversy about neurogenic and myopathic features in Emery-Dreifuss disease is discussed. The unspecific value of the flexion limitation of the spine, and the uncertain nosological position of the rigid spine syndrome are also commented. 相似文献
78.
79.
80.
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