首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   12421篇
  免费   1362篇
  国内免费   747篇
耳鼻咽喉   83篇
儿科学   83篇
妇产科学   135篇
基础医学   1448篇
口腔科学   202篇
临床医学   1641篇
内科学   1997篇
皮肤病学   117篇
神经病学   580篇
特种医学   464篇
外国民族医学   18篇
外科学   1257篇
综合类   1912篇
现状与发展   10篇
一般理论   2篇
预防医学   769篇
眼科学   141篇
药学   1434篇
  50篇
中国医学   994篇
肿瘤学   1193篇
  2024年   79篇
  2023年   278篇
  2022年   784篇
  2021年   1030篇
  2020年   795篇
  2019年   632篇
  2018年   588篇
  2017年   589篇
  2016年   547篇
  2015年   833篇
  2014年   966篇
  2013年   876篇
  2012年   1054篇
  2011年   1087篇
  2010年   731篇
  2009年   597篇
  2008年   608篇
  2007年   571篇
  2006年   496篇
  2005年   461篇
  2004年   176篇
  2003年   155篇
  2002年   136篇
  2001年   89篇
  2000年   89篇
  1999年   70篇
  1998年   38篇
  1997年   41篇
  1996年   37篇
  1995年   20篇
  1994年   18篇
  1993年   17篇
  1992年   8篇
  1991年   5篇
  1990年   8篇
  1989年   9篇
  1988年   3篇
  1987年   2篇
  1985年   1篇
  1984年   1篇
  1983年   2篇
  1982年   2篇
  1964年   1篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
复发性卵巢上皮癌二次细胞减灭术62例分析   总被引:1,自引:1,他引:0  
目的 探讨复发性卵巢上皮癌二次细胞减灭术的意义及可行性。方法 62例复发性卵巢上皮癌接受了二次细胞减灭术。其中48例手术成功,14例仅做探查术。术式包括部分肠切除、肠修补、脾切除、残余大网膜切除及其它转移瘤切除。仅作探查术者是由于转移癌浸润大血管及胰十二指肠等重要脏器,肠系膜呈蜡肠状等。术后辅以铂剂为主的联合化疗。结果 残余瘤直径小于2cm的27例2年和5年存活率分别为40.7%及14.8%。残余瘤大于2cm的35例只有1例存活超过2年(2.9%)。结论 成功的二次肿瘤细胞减灭术能提高患者的存活率。术前作好检查筛去不适合手术病例会提高成功率。  相似文献   
992.
中医辨证治疗慢性肾功能衰竭57例临床观察   总被引:1,自引:0,他引:1  
目的 :观察中医辨证分型治疗慢性肾功能衰竭(CRF)的临床疗效。方法 :采用中医辨证治疗和正常组对照 ,观察其疗效及血清BUN与Cr的变化。结果 :气阴两虚型、肝肾阴虚型以肾功能代偿期及氮质血症期为主 ;脾肾气(阳)虚型以氮质血症期及尿毒症期为多 ;阴阳两虚型以尿毒症期为最多。各型BUN与Cr明显高于正常组 ,而以阴阳两虚型最高 ;气阴两虚型、肝肾阴虚型、脾肾气(阳)虚型的疗效及降低BUN与Cr作用尤为显著。结论 :CRF患者各型与西医肾功能分期关系密切 ,中医辨证治疗对CRF有明显的改善作用。  相似文献   
993.
994.
BACKGROUND: In the process of early screening and interventions to high risk infants with brain damage, the occasion and choosing methods of interventions and the combined application of different interventions are still at the exploratory phase. OBJECTIVE: To observe the efficacy of early intervention using Vojta and Bobath combined treatment in high risk infants with brain damage, and investigate the effect of early rehabilitation on the prognosis. DESIGN: A randomized controlled comparative observation. SETTING: Daqing Oil Field General Hospital of Heilongjiang Province. PARTICIPANTS: Eighty-four high risk infants younger than 1 year were selected from the Department of Pediatrics, Daqing Oil Field General Hospital of Heilongjiang Province from October 2005 to October 2006, including 52 boys (62%) and 32 girls (38%). The treatment started at the age of 0–3 months in 11 cases (13%), 4–6 months in 28 cases (33%), 7–9 months in 35 cases (42%), and 10–12 months in 10 cases (12%). Infants with at least two of the followings were enrolled, including 7 Vojta abnormal postural reflexes, slow or disorder of motor development, increase of muscular tension, postural abnormality, primary reflection residual and CT/MRI abnormalities. Informed consents were obtained from their guardians. The 84 infants were randomly divided into treatment group (n =42) and control group (n =42). METHODS: All the children were intravenously injected with cerebroprotein hydrolysate injection or cattle encephalon glycoside and ignotin injection, 10 times as a course for 2–5 courses; Besides, the infants in the treatment group also received early rehabilitative training of Vojta and Bobath combined treatment, once a day, 40 minutes per time, 5 times a week followed by a 2-day rest, 1 month as a course, and totally 2–5 courses. The Vojta method was to facilitate the automatic regulation by reflexlocomotion. Bobath method was to inhibit abnormal posture but facilitate the normal one, thus it is also called neurodevelopmental therapy realized by reflex inhibition and facilitation. The rehabilitation was evaluated clinically using Gesell Development Schedules (GDS) after the courses when the infants were 1 year old. GDS included five aspects of adaptive behavior, gross motor, refine motor, speech, individual-social behavior. The developmental quotient (DQ) could be calculated according to their development. DQ=developmental age/actual age×100, < 85 points was taken as abnormal; The higher the DQ value, the better the development. ② Evaluation of efficacy: Cured: Developmental order reached normal or generally normal, abnormal posture disappeared, muscular tension ameliorated, symmetric limbs' motor function, free movement, normal intelligence, powerful reaction, and clear speech. Significant effect: Developmental order tended to normal, abnormal posture disappeared incompletely, muscular tension ameliorated incompletely, transient pause in the flexion and extension of limbs, good reaction, and improved intelligence. Effective: Developmental order improved to a certain degree, muscular tension ameliorated, limbs' motor function and posture improved as compared with before treatment, but still under control, intelligence improved a little. Invalid: No obvious changes before and after treatment. Total significant effective rate=(cured cases+cases of significant effect)/total cases×100%. ③ The enumeration data and measurement data were compared with chi-square test and t test respectively. MAIN OUTCOME MEASURES: Clinical efficacy and GDS results at 1 year old in both groups. RESUTLS: All the 84 infants were involved in the analysis of results. ① Efficacy: The total significant effective rate in the treatment group was higher than that in the control group (93%, 74%, χ2=4.2, P < 0.05). ② Results of GDS evaluation: The DQ values of individual intercourse and social adaptation in the treatment group (93.57±11.23, 95.13±9.32) were higher than those in the control group (88.27±10.18, 90.10±10.67, t =2.267, 2.301, P < 0.05); The DQ values of gross motor, fine motor and speech in the treatment group (90.78±10.20, 98.63±9.23, 93.69±11.31) were higher than those in the control group (84.32±11.33, 87.80±8.61, 85.52±10.61, t =2.746, 5.560, 2.746, P < 0.01). The interventional effects on each functional area were significant, especially the gross motor, fine motor and speech. CONCLUSION: The Vojta and Bobath combined treatment on the basis of drug therapy can improve the general developments of abilities in motor, intelligence, social intercourse, social adaptation and speech of high risk infants with brain damage, also can improve the curative efficacy.  相似文献   
995.
目的 研究生活事件的分布及其影响因素。方法 以杨德森生活事件量表对简阳某厂1160 名职工进行调查。结果 50 件主要生活事件中发生的前三位的生活事件分别是:住房紧张,对现职工作不满,以及恋爱订婚或工作学习压力大。各生活事件综合加权评分均分前三位生活事件是:住房紧张,对现职工作不满和家庭经济困难。该人群中男性生活事件综合加权分明显高于女性(P< 0.01),中青年人群组生活事件得分最高。对影响生活事件的因素作多元回归分析,结果显示婚姻状况、疾病与生活事件呈正相关;性别、年龄与生活事件呈负相关。评分系统以综合加权法为优。结论 婚姻及疾病状况与生活事件关联较大  相似文献   
996.

Background  

Our previous proteomic study showed that the senescence marker protein (SMP30) is selectively present in the plasma of a murine model of acute liver failure (ALF). The aim of this study was to validate this SMP30 expression in the plasma and liver tissues of mice and humans with ALF.  相似文献   
997.
998.

Background  

Optimal management and outcome of primary gastric lymphoma (PGL) have not been well defined in the rituximab era. This study aimed to analyze the clinical characteristics, prognostic factors, and roles of different treatment modalities in Chinese patients with PGL.  相似文献   
999.
1000.
目的观察肠复康肛滴液治疗胸腹部术后肠麻痹的临床疗效。方法选择胸腹部术后肠麻痹患者146例,随机分为治疗组86例,对照组60例;治疗组用肠复康肛滴,对照组用新斯的明、吗丁啉分别肌注和口服。结果治疗组在促进患者肠鸣音出现时间、复常时间及肛门排气、排便出现时间等方面,明显优于对照组(P<0.01);治疗组在腹胀、呕吐、腹痛等肠麻痹症状的起效时间、消失时间及3d内症状消除率等方面亦明显优于对照组(P<0.05或0.01)。结论肠复康肛滴对胸腹部术后肠麻痹具有良好的治疗作用,其临床疗效优于新斯的明及吗丁啉。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号