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   6166篇
  免费   744篇
  国内免费   196篇
耳鼻咽喉   8篇
儿科学   75篇
妇产科学   11篇
基础医学   536篇
口腔科学   10篇
临床医学   446篇
内科学   536篇
皮肤病学   17篇
神经病学   262篇
特种医学   170篇
外科学   377篇
综合类   1689篇
预防医学   126篇
眼科学   14篇
药学   352篇
  6篇
中国医学   2315篇
肿瘤学   156篇
  2024年   40篇
  2023年   107篇
  2022年   257篇
  2021年   370篇
  2020年   356篇
  2019年   220篇
  2018年   190篇
  2017年   295篇
  2016年   302篇
  2015年   229篇
  2014年   481篇
  2013年   379篇
  2012年   407篇
  2011年   424篇
  2010年   317篇
  2009年   240篇
  2008年   231篇
  2007年   224篇
  2006年   219篇
  2005年   184篇
  2004年   154篇
  2003年   141篇
  2002年   137篇
  2001年   142篇
  2000年   109篇
  1999年   112篇
  1998年   67篇
  1997年   58篇
  1996年   53篇
  1995年   72篇
  1994年   62篇
  1993年   42篇
  1992年   38篇
  1991年   33篇
  1990年   44篇
  1989年   33篇
  1988年   29篇
  1987年   32篇
  1986年   25篇
  1985年   40篇
  1984年   37篇
  1983年   22篇
  1982年   30篇
  1981年   27篇
  1980年   13篇
  1979年   19篇
  1978年   19篇
  1977年   15篇
  1976年   14篇
  1974年   6篇
排序方式: 共有7106条查询结果,搜索用时 15 毫秒
1.
目的观察参芪润肠通便汤治疗小儿便秘的临床疗效。方法选定麻城市人民医院中医儿科门诊治疗的小儿便秘患儿80例,研究时段自2017年2月—2019年1月,按照治疗方式进行分组,分对照组(40例,常规药物治疗)、试验组(40例,参芪润肠通便汤治疗),回顾分析患儿临床资料,比较临床疗效、症状积分。结果试验组临床总有效率(95.00%)显著较对照组(77.50%)高,P<0.05;试验组治疗前1 d大便全程干燥、腹部胀满、胃纳减退评分与对照组相比存在差异,但P<0.05,治疗2周后两组上述评分均降低,且试验组较对照组低,P<0.05。结论针对小儿便秘患儿,参芪润肠通便汤可改善患者症状,促进其病情恢复,患儿整体状态得以改善,值得借鉴。  相似文献   
2.
肠易激综合征(IBS)是一种常见的功能性疾病,中医病名为"肠郁"。郭朋教授根据IBS生理、病理特点,以疏肝健脾法调和肝脾,辨证施治,取得良好疗效。文章从病因病机、辨证论治及经典案例介绍等几个方面对郭教授治疗IBS经验进行系统阐述,以期为中医药治疗IBS提供理论和方法学参考。  相似文献   
3.
基于调控肠道菌群探讨中药防治脑卒中   总被引:3,自引:3,他引:0  
肠道菌群是一个独特的生态系统,被称为人体"被遗忘的器官",被誉为人类的"第二基因组"。肠道菌群失调与许多中枢神经系统疾病相关,例如帕金森病、阿尔茨海默症、精神分裂症及多发性硬化等。脑卒中具有高的发病率、复发率、死亡率和致残率的特点。肠道菌群在脑卒中的发生、发展中起着关键的作用,可通过影响机体的吸收、代谢、血压、血糖、血脂及动脉粥样斑块等因素,进一步影响脑卒中的发病。中医认为脾胃气血流注失度、阴阳盛衰失衡,机体生理功能失调,化生"风、火、痰、虚、瘀"等病理产物,可致中风的发生。脾胃主腐熟运化水谷,肠道菌群影响饮食的消化吸收,现代研究的肠道菌群功能与中医之脾胃功能失调相关。因此,调整肠道菌群的稳态,可作为一个潜在的干预靶点预防和治疗缺血性脑卒中。中药干预脑卒中已经取得了很好的疗效,是否与调节肠道菌群有关,值得未来做进一步的研究。同时对中药有效成分(小檗碱、黄芩苷、白藜芦醇等),中药单方(丹参、红景天等)和中药组方(补阳还五汤、脑心通胶囊、补中益气汤等)防治脑缺血的研究进展进行综述,为缺血性脑卒中的预防和开发提供新的途径和思路。  相似文献   
4.
ObjectiveTo verify if the relationship between pain catastrophizing and pain worsening would be mediated by muscle weakness and disability in patients with symptomatic knee osteoarthritis.MethodsThis was a cross-sectional study in a hospital out-patient setting. Convenience sampling was used with a total of 50 participants with symptomatic knee osteoarthritis. Pain and the activities of daily livings (ADL) were assessed using the Knee Injury and Osteoarthritis Outcome Score (KOOS) subscale. Pain catastrophizing was assessed using the Coping Strategy Questionnaire (CSQ) subscale. Muscle strength of knee extension and 30-s chair stand test (30CST) were also assessed. Path analysis was performed to test the hypothetical model. Goodness of fit of models were assessed by using statistical parameters such as the chi-square value, goodness of fit index (GFI), adjusted goodness of fit index (AGFI), comparative fit index (CFI), and root mean square error of approximation (RMSEA).ResultsThe chi-square values were not significant (chi-square = 0.283, p = 0.594), and the indices of goodness of fit were high, implying a valid model (GFI = 1.000; AGFI = 0.997; CFI = 1.000; RMSEA = 0.000). Pain was influenced significantly by muscle strength and ADL; muscle strength was influenced significantly by ADL via 30CST; ADL was influenced by pain catastrophizing.ConclusionThe relationship between pain catastrophizing with pain worsening are mediated by muscle weakness and disability.  相似文献   
5.
消化道术后胃肠功能紊乱影响着患者们的生活质量。张立平教授认为术后胃肠功能紊乱,证属本虚标实,临床治疗当从调理中焦-脾胃肝为切入点,强调"脾胃为本""中焦一体"的治疗思路,总结出脾胃虚弱、肝郁脾虚两个证型,临证时以培土达木为基本治疗原则,辨证论治,临床疗效显著。  相似文献   
6.
《Surgery (Oxford)》2022,40(4):274-276
The spleen is a solid organ located beneath the left hemidiaphragm. Indications for surgical resection include trauma (blunt or penetrating), haematological diseases, abscesses, hydatid disease, oncological resection or immunosuppression. Surgical approaches include open, laparoscopic and, more recently, robotic; the complications of operative intervention will also be discussed. In patients with an absent spleen there is a significant increased risk of developing overwhelming post-splenectomy infection (OPSI). It is therefore essential to protect patients from infection due to encapsulated organisms through vaccination. This requires a combination of vaccinations, antibiotic prophylaxis and good education.  相似文献   
7.
We report the case of a littoral‐cell angioma of the spleen, a recently described benign vascular tumour, whose imaging and pathological characteristics have been discussed only by a few authors. The diagnosis was made after elective splenectomy. The CT images, scintigraphy and histological specimens are presented, and differential diagnoses discussed.  相似文献   
8.
9.
Spinal cord stimulation (SCS) is widely used for pain relief in patients with failed back surgery syndrome (FBSS), and muscle weakness is a common finding in patients with chronic pain. We present here a single case report of a 47‐year‐old woman, who, after SCS for FBSS, had continuous improvement in lower leg muscle strength and gait, but only transient and minimal pain relief. To the authors’ knowledge, this is only the second published case report of significant improvement in “motor” function, independent of the analgesic effect following SCS in FBSS. If SCS, in fact, does improve muscle strength, new strategies for the management of patients with chronic pain might be opened up. Further studies are needed to verify this hypothesis.  相似文献   
10.
Detection of non-palpable early splenic enlargement may aid diagnosis of primary polycythaemia (PP) and primary thrombocythaemia (PT). In this study linear spleen sizing by ultrasound has been compared with spleen volume estimation by single photon emission computerized tomography (SPECT) in 26 patients. Spleen length by ultrasound correlated well with SPECT volume estimation.
Ultrasound spleen length was also measured in 60 normal control subjects where the upper limit of the 95% reference range was 11.6 cm. Changes in spleen length with both age and body weight were substantial and overshadowed the imperfect reproducibility of this method. Therefore, interpretation of an individual's measured spleen length should be in relation to that predicted for adults of the same age and weight, particularly at the extremes of the younger, heavier patients and also the older, lighter patients.
Ultrasound spleen lengths of different patient groups (21 PP, 26 PT, 17 idiopathic erythrocytosis, 12 secondary polycythaemia, nine apparent polycythaemia) were compared both using the measured overall reference range and the differences from the values predicted for their age and weight. The comparison showed that almost all patients with PP whose spleens were not palpable had spleen lengths greater than the upper limit for the normal control group, but separation from the other patient groups was incomplete.
Detection of non-palpable splenomegaly by ultrasound length should remain a 'minor' criterion amongst the 'proposed modified diagnostic criteria' of PP.  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