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   1118篇
  免费   42篇
  国内免费   1篇
儿科学   67篇
妇产科学   57篇
基础医学   131篇
口腔科学   3篇
临床医学   95篇
内科学   108篇
皮肤病学   4篇
神经病学   156篇
特种医学   46篇
外科学   277篇
综合类   11篇
预防医学   65篇
眼科学   61篇
药学   51篇
中国医学   2篇
肿瘤学   27篇
  2022年   6篇
  2021年   11篇
  2020年   7篇
  2019年   18篇
  2018年   24篇
  2017年   8篇
  2016年   17篇
  2015年   28篇
  2014年   40篇
  2013年   47篇
  2012年   78篇
  2011年   84篇
  2010年   43篇
  2009年   43篇
  2008年   54篇
  2007年   57篇
  2006年   53篇
  2005年   47篇
  2004年   38篇
  2003年   32篇
  2002年   35篇
  2001年   31篇
  2000年   30篇
  1999年   32篇
  1998年   14篇
  1997年   11篇
  1996年   5篇
  1995年   5篇
  1994年   7篇
  1993年   5篇
  1992年   15篇
  1991年   26篇
  1990年   21篇
  1989年   21篇
  1988年   20篇
  1987年   12篇
  1986年   12篇
  1985年   13篇
  1984年   9篇
  1983年   6篇
  1979年   11篇
  1978年   8篇
  1977年   6篇
  1974年   6篇
  1973年   7篇
  1972年   12篇
  1971年   6篇
  1970年   7篇
  1967年   5篇
  1966年   7篇
排序方式: 共有1161条查询结果,搜索用时 15 毫秒
91.
BACKGROUND: Inpatient as well as outpatient cure in a spa environment with commonly 3- to 4-week duration features a combination of different treatments customized according to the needs of the individual patient. The physiological rationale and the mode of action are widely accepted. However, firm quantitative evidence of the clinical effectiveness is incomplete. OBJECTIVE: To document the effects of a well standardized complex therapeutic regimen (Kneippism) on pain, quality of life, and drug consumption during therapy and with 1-year follow up. STUDY DESIGN: Prospective cohort study with assessments at the beginning, during, and at the end of treatment and with follow-up investigations 3, 6, and 12 months thereafter. SETTING: Four spa clinics in Bad W?rishofen, Southern Bavaria. PATIENTS: 363 patients (248 outpatients, mean duration of therapy 23.3 days, and 115 inpatients, mean duration of therapy 27.4 days), one half between 40 and 60 years old above 60 years of age, predominantly suffering from musculoskeletal and/or cardiovascular diseases. INTERVENTION: Custom-tailored combination of therapies comprising of hydro-, kinesi-, and phytotherapy, dietetics, 'ordnungstherapie', and continued disease-specific standard treatment, if necessary. MAIN OUTCOME MEASURE: Pain, patients' self-rating, (IRES questionnaire), medication. RESULTS: The monitored dimensions of pain improved significantly during treatment and remained at that level essentially for the complete follow up interval. The same was true for various dimensions of reported subjective complaints as well as for drug consumption. CONCLUSION: When estimating the clinical relevance of a complex therapeutic regimen such as a cure of 3- to 4-week duration, the question of the impact of the specific effect of single components is secondary to the question of the overall relevance of that therapeutic concept. The findings of this study point at potential long-term effects of at least 1-year duration.  相似文献   
92.
93.
A total of 135 patients with a suspected diagnosis of post-traumatic, postoperative or inflammatory soft-tissue lesions were examined by ultrasound. The majority of patients (n = 48) showed post-traumatic soft-tissue hematomas with or without muscle rupture. Post-operative hematomas were found in 23 and hematomas after anticoagulation therapy in 4 patients. Inflammatory soft-tissue lesions were diagnosed in 14 patients and inflammatory tendon lesions in 16. The ultrasonographic diagnoses and therapeutic consequences were compared retrospectively. Therapeutic management was based upon the clinical signs and sonographic findings. Ultrasonically guided needle aspiration is of diagnostic value and is performed as a therapeutic modality as well.  相似文献   
94.
95.
PURPOSE: To analyze the morphology of abdominal aortic aneurysms (AAAs) and to study the usefulness of spiral computed tomography (CT) versus digital subtraction angiography (DSA) in the evaluation of patients for endovascular repair. METHODS: Of 133 AAA patients (120 men, mean age 67 years, range 52 to 84) evaluated preoperatively with CT imaging, 77 endograft candidates (68 men) were also assessed with intra-arterial DSA. Arterial parameters were measured on axial CT scans and angiographic films for comparison. RESULTS: Mean maximum AAA diameter was 58 +/- 11 mm (range 39 to 95). Aneurysmal neck diameter was consistently smaller on DSA than on CT (20.7 +/- 3.6 mm versus 23.0 +/ 3.5 mm, p < 0.0001). The distance from the most distal renal artery to the aortic bifurcation was longer on angiography than on CT (mean difference 10.0 mm, p < 0.0001). There was a positive correlation between the maximum AAA diameter and the AAA length (r = 0.49, p < 0.0001) and an inverse relationship between the neck length and the neck diameter (r = -0.36, p < 0.0001). No correlation was found between the maximum AAA diameter and maximum iliac diameter, angulation, or length. CONCLUSIONS: AAA anatomy varies widely and independently of the aneurysm size. Therefore, the maximum size of the aneurysm is a poor predictor of whether or not an aneurysm is suitable for endovascular repair. The discrepancy between angiographic and axial CT measurements suggests that neither alone is sufficient as a preoperative imaging technique when evaluating a patient for an endovascular graft procedure.  相似文献   
96.
The human monoblastoid tumor cell line U937 was induced to differentiate along the monocyte/macrophage lineage by treatment with 5 x 10(-9) M 12-O-tetradecanoyl phorbol-13-acetate (TPA). Between 2 h and 4 h following TPA-treatment U937 cells started to release significant amounts of TNF-alpha which remained detectable until 8-10 days. A significant IL-1 beta release was measured 24 h-48 h post stimulation and increased levels of IL-1 beta persisted until 20-22 days of culture. In contrast no release of either IL-1 alpha or IL-6 could be detected with 5 x 10(-9) M TPA during the whole time course of the experiments. The sequential induction of TNF-alpha and IL-1 beta appeared to be independently regulated since TNF-alpha release was not required for the onset of IL-1 beta production. Northern-blot analysis confirmed the sequential induction and the long term expression of TNF-alpha and IL-1 beta mRNAs. Western-blot analysis predominantly showed a high molecular weight IL-1 beta protein of about 35 kD. Further investigations on the regulation of cytokine production and release by TPA-differentiated U937 cells revealed that TNF-alpha and IL-1 beta synthesis was not influenced by exogenously added rhTNF-alpha or PGE2, whereas rh gamma-IFN specifically enhanced the IL-1 beta production. Thus, the regulation and intracellular processing of cytokines generated by differentiating U937 cells shows some differences when compared to mature monocytes/macrophages which may be related to the tumorigenic origin of U937 cells or to an incomplete differentiation.  相似文献   
97.
Background: Migraine is very common in school‐aged children, but despite a number of pharmacological and non‐pharmacological options for prophylaxis, randomized controlled evidence in children is small. Evidence‐based prophylactic drugs may have considerable side effects. Objective: This study was to assess efficacy of a butterbur root extract (Petadolex®) and music therapy in primary school children with migraine. Design: Prospective, randomized, partly double‐blind, placebo‐controlled, parallel‐group trial. Methods: Following a 8‐week baseline patients were randomized and received either butterbur root extract (n=19), music therapy (n=20) or placebo (n=19) over 12 weeks. All participants received additionally headache education (“treatment as usual”) from the baseline onwards. Reduction of headache frequency after treatment (8‐week post‐treatment) as well as 6 months later (8‐week follow‐up) was the efficacy variable. Results: Data analysis of subjects completing the respective study phase showed that during post‐treatment, only music therapy was superior to placebo (p=0.005), whereas in the follow‐up period both music therapy and butterbur root extract were superior to placebo (p=0.018 and p=0.044, respectively). All groups showed a substantial reduction of attack frequency already during baseline. Conclusion: Butterbur root extract and music therapy might be superior to placebo and may represent promising treatment approaches in the prophylaxis of paediatric migraine.  相似文献   
98.
99.
100.
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