全文获取类型
收费全文 | 4997篇 |
免费 | 292篇 |
国内免费 | 22篇 |
专业分类
耳鼻咽喉 | 35篇 |
儿科学 | 131篇 |
妇产科学 | 37篇 |
基础医学 | 686篇 |
口腔科学 | 78篇 |
临床医学 | 318篇 |
内科学 | 1284篇 |
皮肤病学 | 240篇 |
神经病学 | 392篇 |
特种医学 | 165篇 |
外科学 | 1051篇 |
综合类 | 17篇 |
预防医学 | 85篇 |
眼科学 | 37篇 |
药学 | 324篇 |
中国医学 | 18篇 |
肿瘤学 | 413篇 |
出版年
2023年 | 24篇 |
2022年 | 48篇 |
2021年 | 78篇 |
2020年 | 54篇 |
2019年 | 64篇 |
2018年 | 92篇 |
2017年 | 69篇 |
2016年 | 91篇 |
2015年 | 80篇 |
2014年 | 101篇 |
2013年 | 142篇 |
2012年 | 235篇 |
2011年 | 237篇 |
2010年 | 127篇 |
2009年 | 97篇 |
2008年 | 197篇 |
2007年 | 215篇 |
2006年 | 194篇 |
2005年 | 197篇 |
2004年 | 204篇 |
2003年 | 218篇 |
2002年 | 253篇 |
2001年 | 217篇 |
2000年 | 189篇 |
1999年 | 160篇 |
1998年 | 74篇 |
1997年 | 44篇 |
1996年 | 39篇 |
1995年 | 49篇 |
1994年 | 43篇 |
1993年 | 40篇 |
1992年 | 123篇 |
1991年 | 119篇 |
1990年 | 125篇 |
1989年 | 143篇 |
1988年 | 81篇 |
1987年 | 114篇 |
1986年 | 77篇 |
1985年 | 86篇 |
1984年 | 70篇 |
1983年 | 52篇 |
1982年 | 31篇 |
1981年 | 27篇 |
1979年 | 43篇 |
1978年 | 36篇 |
1977年 | 29篇 |
1971年 | 27篇 |
1969年 | 29篇 |
1968年 | 24篇 |
1967年 | 28篇 |
排序方式: 共有5311条查询结果,搜索用时 15 毫秒
101.
Yamane M 《Revista espa?ola de cardiología》2012,65(3):265-277
Although successful recanalization rates of coronary chronic total occlusions have remained suboptimal in percutaneous coronary interventions, evolving techniques, including the retrograde approach, have raised hopes for better outcomes. With the advent of antiplatelet therapy and drug-eluting stents, along with conventional antegrade approaches, further progress can be expected in the "last frontier" of interventional cardiology. The article focuses on contemporary recanalization strategy in percutaneous coronary intervention of coronary chronic total occlusions. 相似文献
102.
103.
104.
105.
Katsuaki Kojima Erik C. Brown Robert Rothermel Alanna Carlson Darren Fuerst Naoyuki Matsuzaki Aashit Shah Marie Atkinson Maysaa Basha Sandeep Mittal Sandeep Sood Eishi Asano 《Clinical neurophysiology》2013,124(5):857-869
ObjectiveWe determined the clinical impact and developmental changes of auditory-language-related augmentation of gamma activity at 50–120 Hz recorded on electrocorticography (ECoG).MethodsWe analyzed data from 77 epileptic patients ranging 4–56 years in age. We determined the effects of seizure-onset zone, electrode location, and patient-age upon gamma-augmentation elicited by an auditory-naming task.ResultsGamma-augmentation was less frequently elicited within seizure-onset sites compared to other sites. Regardless of age, gamma-augmentation most often involved the 80–100 Hz frequency band. Gamma-augmentation initially involved bilateral superior-temporal regions, followed by left-side dominant involvement in the middle-temporal, medial-temporal, inferior-frontal, dorsolateral-premotor, and medial-frontal regions and concluded with bilateral inferior-Rolandic involvement. Compared to younger patients, those older than 10 years had a larger proportion of left dorsolateral-premotor and right inferior-frontal sites showing gamma-augmentation. The incidence of a post-operative language deficit requiring speech therapy was predicted by the number of resected sites with gamma-augmentation in the superior-temporal, inferior-frontal, dorsolateral-premotor, and inferior-Rolandic regions of the left hemisphere assumed to contain essential language function (r2 = 0.59; p = 0.001; odds ratio = 6.04 [95% confidence-interval: 2.26–16.15]).ConclusionsAuditory-language-related gamma-augmentation can provide additional information useful to localize the primary language areas.SignificanceThese results derived from a large sample of patients support the utility of auditory-language-related gamma-augmentation in presurgical evaluation. 相似文献
106.
107.
108.
Takahashi T Asano Y Amiya E Hatano M Tamaki Z Ozeki A Watanabe A Kawarasaki S Nakao T Taniguchi T Ichimura Y Toyama T Watanabe M Hirata Y Nagai R Sato S 《Modern rheumatology / the Japan Rheumatism Association》2012,22(4):598-601
Intravenous cyclophosphamide pulse therapy (IVCY) exerts its efficacy against interstitial lung disease (ILD) associated with systemic sclerosis (SSc) by restoring vascular injuries as well as aberrant immune activation. We recently experienced two patients with SSc-ILD in whom the values of brachial flow-mediated dilation (FMD) reflected the efficacy of IVCY. We herein report the details of these cases and discuss the potential of FMD to predict and evaluate the effect of IVCY on SSc-ILD. 相似文献
109.
Purpose
In Japan, a new type of sclerotherapy termed ALTA (aluminum potassium sulfate and tannic acid) injection therapy has recently been introduced. The objectives of this study were to determine whether the presence or absence of antithrombotic treatment (AT) affected the efficacy rate or the occurrence of complications associated with ALTA injection sclerotherapy.Methods
This study was a case-matched study of 37 patients who underwent ALTA therapy to treat hemorrhoids between 2007 and 2009. Each AT patient was matched for age and degree of hemorrhoids with a control non-AT patient. In each of the subgroups, the therapeutic efficacy of ALTA therapy was evaluated by comparing an assessment completed before therapy with an assessment completed 6 months after therapy.Results
The efficacy in patients with bleeding did not differ between the two groups (P = 0.074). The efficacy in patients with prolapse was significantly lower in the AT group than in the non-AT group (P = 0.013). The two groups did not differ significantly in the occurrence of complications (P = 0.450).Conclusions
Among patients with hemorrhoids receiving AT, ALTA injection sclerotherapy is recommended for those in whom it is difficult to discontinue AT. 相似文献110.
Takashi Nakatsuka Kiyonori Harii Hirotaka Asato Satoshi Ebihara Takashi Yoshizumi Masahisa Saikawa 《Journal of plastic surgery and hand surgery》2013,47(3):307-310
We reviewed 109 consecutive patients with cancer of the hypopharynx or cervical oesophagus who underwent free flap transfer for immediate reconstruction after total pharyngolaryngo-oesophag-ectomy. The free flaps used were either free jejunal (n = 70) or radial forearm flaps (n = 39). Significantly more fistulas (3/70 compared with 15/39, p < 0.0001) and strictures (6/64 compared with 13/33, p = 0.0008) developed in the radial forearm than the jejunal flap group. However, functional donor site morbidity was minimal and there were no cases of total flap necrosis in the forearm flap group. We consider that the free jejunal flap should be the first choice for total reconstruction of pharyngo-oesophageal defects. However, the forearm flap is suitable for elderly, high risk patients, because it is less invasive and has minimal donor site morbidity, which facilitates early recovery. 相似文献