全文获取类型
收费全文 | 237篇 |
免费 | 50篇 |
国内免费 | 3篇 |
专业分类
耳鼻咽喉 | 3篇 |
儿科学 | 28篇 |
妇产科学 | 4篇 |
基础医学 | 66篇 |
口腔科学 | 2篇 |
临床医学 | 17篇 |
内科学 | 39篇 |
皮肤病学 | 8篇 |
神经病学 | 14篇 |
特种医学 | 5篇 |
外科学 | 17篇 |
综合类 | 35篇 |
预防医学 | 7篇 |
眼科学 | 8篇 |
药学 | 14篇 |
中国医学 | 7篇 |
肿瘤学 | 16篇 |
出版年
2023年 | 3篇 |
2022年 | 3篇 |
2021年 | 4篇 |
2020年 | 10篇 |
2019年 | 10篇 |
2018年 | 9篇 |
2017年 | 15篇 |
2016年 | 17篇 |
2015年 | 17篇 |
2014年 | 17篇 |
2013年 | 19篇 |
2012年 | 14篇 |
2011年 | 14篇 |
2010年 | 16篇 |
2009年 | 12篇 |
2008年 | 9篇 |
2007年 | 14篇 |
2006年 | 10篇 |
2005年 | 14篇 |
2004年 | 13篇 |
2003年 | 14篇 |
2002年 | 5篇 |
2001年 | 5篇 |
2000年 | 6篇 |
1999年 | 5篇 |
1998年 | 2篇 |
1996年 | 2篇 |
1995年 | 2篇 |
1994年 | 1篇 |
1993年 | 2篇 |
1992年 | 3篇 |
1991年 | 1篇 |
1982年 | 1篇 |
1980年 | 1篇 |
排序方式: 共有290条查询结果,搜索用时 15 毫秒
1.
应用腹蛇抗栓酶-3治疗94例糖尿病患者并发的脑血栓形成、高脂血症、动脉硬化、神经病变和心绞痛取得较好的疗效。脑血栓形成急性期采用冲击疗法,瘫痪肢体功能恢复迅速、合并神经病变者,治疗后症状消失、神经功能改善。TG、TC、β-脂蛋白水平和TC/HDL比值均降低(P<0.01),HDL水平上升(P<0.01),对比治疗前后血6-Keto-PGF_(1α)、TXB_2和纤维结合素FN的水平改善,具有统计学意义(P<0.01)。 相似文献
2.
3.
矽肺患者血液流病变与血清免疫球蛋白关系的临床研究 总被引:1,自引:0,他引:1
为了探索矽肺患者免疫球蛋白的变化与血液流变学的关系,我们测定了本院门诊及住院的83例不同期别矽肺病人的血清免疫球蛋白和血液流变学有关指标。结果显示:晚期(Ⅱ、Ⅲ期)和进展期矽肺患者的血液高粘滞状态不仅与红细胞比积及红细胞的粘弹特性有关,而且与血清免疫球蛋白、尤其是IgG和IgA的含量增加有关,而与纤维蛋白原未显示相关。 相似文献
4.
5.
后程加速超分割三维适形放射治疗食管癌临床分析 总被引:2,自引:0,他引:2
目的回顾性分析后程加速超分割三维适形放射治疗(3 DCRT)食管癌的疗效.方法对80例胸段食管癌随机分为三维适形放疗组(观察组)40例和常规放疗组(对照组)40例.观察组先常规分割照射40Gy后改为后程加速超分割适形放疗,每次1.5 Gy,2次/日,间隔6小时.全程剂量67~72 Gy/38~41次,40~45d.同期常规放疗的40例为对照组,采用3野照射(前1后2),每次2 Gy,剂量65~70 Gy/33~35次,45~50 d.观察两组照射野大小差异、近期疗效及放疗不良反应.结果观察组照射野的个数及设野的平均长度和宽度大于对照组(P<0.01).1、2级反应率高于对照组(P<0.05),1年生存率及急性放射反应与对照组无显著性差异(P>0.05).结论3 DCRT后程加速超分割三维适形放疗食管癌在保证临床靶区(CTV)受到高剂量照射的同时,其与PTV适形度好,近期疗效较好,且不增加放疗副反应. 相似文献
6.
Published data on the long‐term survival results of patients with localized esophageal carcinoma receiving late course accelerated hyper‐fractionated radiotherapy (LCAF RT) versus conventional fractionated radiotherapy (CF RT) are inconclusive. In order to derive a more precise estimation of the both treatment‐regimes, a meta‐analysis based on systematic review of published articles was performed. A meta‐analysis was performed using trials identified through Pubmed and Chinese national knowledge infrastructure. Results in 5‐year survival and 5‐year local control were collected from randomized trials comparing LCAF RT with CF RT. Review Manager (The Cochrane Collaboration, Oxford, England) and Stata software (Stata Corporation, College Station, TX, USA) were used for data management. A total of 11 trials were involved in this analysis with 572 cases and 567 controls. Our results showed that LCAF RT, compared with CF RT, significantly improved the 5‐year survival (odds ratio [OR]= 2.93, 95% confidence interval [CI]: 2.15–4.00, P < 0.00001) and 5‐year local control (OR = 3.96, 95% CI: 2.91–5.38, P < 0.00001). LCAF RT was more therapeutically beneficial than CF RT in the localized esophageal carcinoma. 相似文献
7.
《International journal of hygiene and environmental health》2015,218(4):386-391
BackgroundSeveral members of a swimming club complained of respiratory symptoms associated with attending a municipal indoor swimming pool. Trichloramine, a volatile chlorination by-product and a potent respiratory irritant, was the most probable culprit, but the exact cause for its presence in excessive concentrations remained elusive.MethodsTwenty-two competitive swimmers and six coaches were evaluated during the outbreak and nine swimmers and four coaches were re-evaluated one year later. Symptoms were recorded by non-standardized history taking; pulmonary function testing included spirometry, measurement of fraction of exhaled nitric oxide (FENO) and histamine provocation. Concentrations of trichloramine in air were measured repeatedly by the method of Héry.ResultsThe most commonly reported symptoms consisted of cough (n = 16), dyspnoea (n = 13), tearing eyes (n = 10) and blocked or runny nose (n = 6). Mean FEV1% predicted was 109.1%. Mean FENO level was 19.7 ppb (higher than 25 ppb in 3 subjects). Airway hyperreactivity to histamine (PC20 ≤ 8 mg/ml) was detected in 22/26 subjects. Measured trichloramine concentrations in air exceeded the maximal concentration (WHO) of 0.5 mg/m3 four times between May and October 2011 and four times between January and March 2012. Polyamine compounds, present in glue used for repairing pipework, were identified as a probable external source of nitrogen resulting in increasing trichloramine concentrations. After the removal of the presumed cause of the excessive trichloramine concentrations, most subjects improved clinically, but several subjects remained symptomatic and had bronchial hyperreactivity.DiscussionA high prevalence of airway hyperreactivity, accompanied by symptoms of upper and lower airways, was detected in swimmers who had been repeatedly exposed to high trichloramine concentrations. A glue containing polyamines, used to repair a pipework, was suspected to be the source of this excessive production of trichloramine. 相似文献
8.
9.
目的探讨血清降钙素原(PCT)在烧伤患者细菌性感染诊断中的临床价值。方法 169例烧伤患者经血培养、分泌物和穿刺液培养等病原学检查确认细菌性感染96例,非细菌性感染73例,2组患者同时进行PCT、WBC和超敏C反应蛋白(hsCRP)检查,比较这3项指标在细菌性感染诊断中的价值,并进一步研究PCT浓度水平与烧伤程度的关系。结果细菌性感染组烧伤患者血清PCT、WBC和hs-CRP浓度水平明显高于非细菌性感染组(P0.05)。PCT诊断细菌性感染敏感性为90.63%,特异性为89.04%,阳性预测值为91.58%,阴性预测值为87.84%,PCT对细菌性感染的诊断效能明显高于其他两项炎症指标,PCT的浓度水平与烧伤患者的烧伤程度成正相关。结论细菌性感染的烧伤患者血清PCT、WBC和hs-CRP水平明显升高,PCT作为诊断细菌性感染标志物具有更好的敏感性及特异性,优于WBC和hs-CRP两项炎症指标。 相似文献
10.