全文获取类型
收费全文 | 1014篇 |
免费 | 54篇 |
国内免费 | 10篇 |
专业分类
耳鼻咽喉 | 24篇 |
儿科学 | 15篇 |
妇产科学 | 21篇 |
基础医学 | 135篇 |
口腔科学 | 14篇 |
临床医学 | 53篇 |
内科学 | 228篇 |
皮肤病学 | 14篇 |
神经病学 | 74篇 |
特种医学 | 52篇 |
外科学 | 248篇 |
综合类 | 11篇 |
一般理论 | 1篇 |
预防医学 | 38篇 |
眼科学 | 3篇 |
药学 | 40篇 |
中国医学 | 1篇 |
肿瘤学 | 106篇 |
出版年
2024年 | 1篇 |
2023年 | 14篇 |
2022年 | 16篇 |
2021年 | 41篇 |
2020年 | 31篇 |
2019年 | 32篇 |
2018年 | 30篇 |
2017年 | 32篇 |
2016年 | 30篇 |
2015年 | 49篇 |
2014年 | 55篇 |
2013年 | 63篇 |
2012年 | 79篇 |
2011年 | 87篇 |
2010年 | 57篇 |
2009年 | 43篇 |
2008年 | 61篇 |
2007年 | 66篇 |
2006年 | 70篇 |
2005年 | 48篇 |
2004年 | 44篇 |
2003年 | 53篇 |
2002年 | 36篇 |
2001年 | 2篇 |
2000年 | 3篇 |
1999年 | 4篇 |
1998年 | 10篇 |
1997年 | 2篇 |
1996年 | 2篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1993年 | 2篇 |
1991年 | 2篇 |
1990年 | 2篇 |
1989年 | 1篇 |
1987年 | 2篇 |
1984年 | 1篇 |
1980年 | 3篇 |
1979年 | 1篇 |
1961年 | 1篇 |
排序方式: 共有1078条查询结果,搜索用时 15 毫秒
11.
12.
13.
14.
Alexis Sentís Irina Kislaya Nathalie Nicolay Hinta Meijerink Jostein Starrfelt Ivn Martínez-Baz Jesús Castilla Katrine Finderup Nielsen Christian Holm Hansen Hanne-Dorthe Emborg Anthony Nardone Tarik Derrough Marta Valenciano Baltazar Nunes Susana Monge the VEBIS-Lot working group VEBIS-Lot working group Ausenda Machado Carlos Dias Itziar Casado Cristina Burgui Amparo Larrauri Clara Mazagatos 《Euro surveillance : bulletin européen sur les maladies transmissibles = European communicable disease bulletin》2022,27(30)
By employing a common protocol and data from electronic health registries in Denmark, Navarre (Spain), Norway and Portugal, we estimated vaccine effectiveness (VE) against hospitalisation due to COVID-19 in individuals aged ≥ 65 years old, without previous documented infection, between October 2021 and March 2022. VE was higher in 65–79-year-olds compared with ≥ 80-year-olds and in those who received a booster compared with those who were primary vaccinated. VE remained high (ca 80%) between ≥ 12 and < 24 weeks after the first booster administration, and after Omicron became dominant. 相似文献
15.
Tarik M. Elsheikh Jan F. Silverman Thomas M. Sturgis Kim R. Geisinger 《Diagnostic cytopathology》1996,14(1):56-59
Bile peritonitis (BP) is a rare but acute and serious condition that may be associated with high mortality. BP results from generalized or localized leakage of bile into the peritoneal cavity. At best, radiologic studies may be suggestive of BP. We observed a spectrum of cytologic findings in aspirated peritoneal fluids (PF) from 3 patients with BP. Occasional bile pigment-laden macrophages, extracellular lakes of green stringy material admixed with variable numbers of histiocytes, mesothelial cells, and acute and chronic inflammatory cells, were seen. Numerous candida were present in one case. To the best of our knowledge, this is the first report describing the cytologic features of BP. Cytology is a simple, rapid, and cost-effective means of examining PF, and can therefore play a significant role in establishing the diagnosis of BP. Early recognition of BP can result in rapid, therapeutic intervention that may prevent significant morbidity and mortality. Diagn Cytopathol 1996;14:56–59. © 1996 Wiley-Liss, Inc. 相似文献
16.
We report a case of solitary fibrous tumor of the thyroid gland in a 51‐year‐old man with pre‐existing right recurrent laryngeal nerve paralysis from a congenital tracheoesophageal fistula repair as an infant. The left thyroid lobe was enlarged and soft. Fine needle aspiration biopsy via ultrasound guidance demonstrated a hypercellular aspirate composed of spindle cells with bland nuclear morphology. Given this histomorphology and immunohistochemical profile, the diagnosis of solitary fibrous tumor was considered and confirmed following left thyroid lobectomy. Laryngoscope, 2009 相似文献
17.
Rajendra Kumar Gokhroo Kaul Anushri M.T. Tarik C. Kailash N. Rajesh K. Ashish G. Manish C. Subhash 《Indian heart journal》2021,73(2):205-210
BackgroundSacubitril/Valsartan (ARNI) has now class 1 recommendation for treatment of heart failure with reduced ejection fraction (HFrEF). It has been shown to reduce cardiovascular morbidity & mortality in Heart failure with reduced ejection fraction (HFrEF) and significant improvement in all echocardiographic parameters besides TEI index. Tei index is a marker of inflammation, myocardial cell metabolism and its contractile function has not been evaluated as a distinctive entity so we took up this study to evaluate the effects of ARNI on the LV functions using two dimensional (2D)ECHO parameters in Indian population and to assess TEI index for myocardial function.Methods256 patients with class II, III or IV HF and EF<40% were enrolled. 171(66.8%) were males and 85(33.2%) were females. Patients were evaluated at baseline, 6 and 12 months for LVEF, LV mass &,LVMPI. Drug was discontinued in 2 patients due to angioedema, in 5 patients due to acute kidney injury and in 2 patients due to hypotension. LV mass measurement done by linear echocardiographic method and Flow Doppler method used for TEI index calculation.ResultsBaseline parameters in 247 patients were mean EF = 26.33 ± 6.28%, mean LV mass = 270.84 ± 68.94 gm, mean Tei Index = 0.852 ± 0.22. ARNI use was associated with an average gradual increase in EF, from a mean baseline of 26.33 ± 6.28% to 33.88 ± 7.73%(p = 0.000001) after 1 year of treatment. There was a significant progressive reduction of 57.97 g/m2 in mean LV mass index after 1 year of treatment (p = 0.000001).TEI index showed significant reduction from baseline mean 0.85 ± 0.22 to 0.70 ± 0.12(p = 0.000001)after 1 year of treatment.ConclusionUse of ARNI as additive adjunct to standard care of treatment resulted in significant progressive decline in LV mass and increase in TEI index. 相似文献
18.
19.
Caselli A Hanane T Jane B Carter S Khaodhiar L Veves A 《Journal of diabetes and its complications》2003,17(4):205-210
OBJECTIVE: To evaluate the vasodilation induced by topical application of methyl nicotinate (MN) and to compare it with the vasodilatory response to acetylcholine (ACh) and sodium nitroprusside (SNP) in healthy subjects and diabetic neuropathic patients. RESEARCH DESIGN AND METHODS: Ten diabetic patients with peripheral neuropathy (DN) and 10 age- and sex-matched healthy control subjects (C) were enrolled. The vasodilatory response to topical application of 1% MN and a placebo emulsion at the forearm and dorsum of the foot skin at 5, 15, 30, 60 and 120 min was measured using Laser Doppler Perfusion Imaging. The vasodilatory response to iontophoresis of 1% ACh and 1% SNP solutions was also evaluated. RESULTS: The maximal vasodilatory response to ACh, SNP and MN was similar at the forearm and foot level in the diabetic patients. In the control group, the responses to MN, ACh and SNP were similar on the forearm but in the foot, the MN vasodilatory response was higher when compared to the ACh and SNP responses. MN-related vasodilation was present 5 min after the application, reached its peak at 15-30 min and declined to pre-application levels 120 min afterward. CONCLUSIONS: Topical application of MN at the forearm and foot levels of diabetic neuropathic patients results in skin vasodilation that is comparable to the maximal vasodilation that can be induced by iontophoresis of ACh or SNP and lasts for less than 2 h. Further studies will be required to explore the potential of MN to increase blood flow and to prevent diabetic foot problems in clinical practice. 相似文献
20.
Viola Oertel-Knöchel Britta Reinke Richard Feddern Annika Knake Christian Knöchel David Prvulovic Fabian Fußer Tarik Karakaya Deborah Loellgen Christine Freitag Johannes Pantel David E.J. Linden 《Journal of affective disorders》2013