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41.
42.
腘绳肌腱重建前交叉韧带移植肌腱的固定 总被引:1,自引:0,他引:1
目的:腘绳肌腱重建前交叉韧带曾出现过多种固定器材,分析近年来关于腘绳肌腱重建前交叉韧带的文献资料,了解肌腱固定方式的发展趋势。资料来源:通过计算机检索Medline1995-01/2006-09有关腘绳肌腱重建前交叉韧带移植肌腱固定方式的文献,检索词为“anteriorcruciate ligament,reconstruction,hamstring”,限定文章语言种类为English;另外检索中文期刊全文数据库2000-01/2006-03有关腘绳肌腱重建前交叉韧带移植肌腱固定方式的文献,检索词为“前交叉韧带,重建术,腘绳肌腱”,限定文章语言种类为中文。资料选择:选取有关腘绳肌腱重建前交叉韧带的文章,纳入标准:①随机或自身前后对照的临床研究。②观点明确。③有关于固定方式的评论。排除标准:①综述。②重复性研究。资料提炼:共检索到60篇关于腘绳肌腱重建前交叉韧带的文章,选择其中符合标准的33篇进行综合分析。资料综合:固定方式经历了一个由皮质骨外固定到骨隧道内固定的演变过程,Transfix是目前较为理想的固定方式,肌腱结嵌压固定是最新出现的一种固定方式,其临床效果尚需进一步验证。在固定位置的选择上,多数学者认为应该遵循等距重建。通过对固定方式的比较发现,隧道内固定能减轻术后骨隧道的扩大程度。结论:腘绳肌腱重建前交叉韧带的固定方法越来越趋于隧道内固定,并朝着利于腱骨愈合、减轻骨隧道扩大的方向发展。在固定位置的选择上,学者们尚无统一的意见,其趋势可能是向解剖固定发展。 相似文献
43.
KJ Kao 《Transfusion》1988,28(1):14-17
To determine whether chloroquine can specifically elute HLA antigens and beta 2-microglobulin (beta 2-M) from the platelet surface, quantitative immunofluorescence flow cytometry and monoclonal antibodies were used to show that HLA antigens and beta 2-M were proportionally eluted from the platelet surface without affecting the membrane glycoproteins IIb and IIIa. Second, an autoradiogram of electrophoresed I125-labeled platelets showed that only beta 2-M but not other I125-labeled membrane proteins could be eluted. Although HLA antigens were poorly labeled by I125 and could not be detected on the autoradiogram, the eluted HLA antigens could be detected by anti-HLA monoclonal antibody and immunoblotting techniques. No loss of plasma membrane integrity was observed by transmission electron microscopy after chloroquine treatment of platelets. The results indicate that chloroquine selectively elutes HLA antigens and their noncovalently associated beta 2-M without affecting other integral platelet membrane proteins. 相似文献
44.
目的:观察低血糖指数的膳食对2型糖尿病患者氧化应激状态的影响。方法:2004-10/11在上海市静安区二个社区卫生服务中心招募受试者,经医生明确诊断为2型糖尿病、病程超过6个月,体质量指数≥24kg/m2的老年糖尿病志愿者43名,受试者对试验知情同意。采用随机交叉试验随机分配至低血糖指数饮食组和高血糖指数饮食组,每种膳食分别连续使用4周,间隔洗脱期4周,比较试验前后患者超氧化物歧化酶、脂质过氧化产物丙二醛和谷胱甘肽过氧化物酶含量的变化。结果:受试者依从性好,除1人因试验期间发现肿瘤而退出试验,42名志愿者按设计要求完成试验。膳食干预后低血糖指数饮食组和高血糖指数饮食组的超氧化物歧化酶活力分别升高了15.68%和21.33%,丙二醛水平分别下降23.94%和21.55%,谷胱甘肽过氧化物酶活力分别升高了15.74%和17.09%;干预后低血糖指数饮食组丙二醛下降水平与高血糖指数饮食组比较差异有显著性意义(P<0.05),而超氧化物歧化酶和谷胱甘肽过氧化物酶活性两组间差异无显著性意义(P>0.05)。结论:在控制总能量的基础上给予平衡膳食能够改善其氧化应激水平,采用低血糖指数食物有助于氧化应激水平的改善。 相似文献
45.
目的:建立家猪胸腰段脊髓火器贯通伤模型和改良Allen's打击伤后全瘫模型,观察伤后促凋亡基因p53基因的早期表达。方法:实验于2005-05/08在解放军第一七五医院实验室完成。取健康雄性家猪20只,单纯随机分为3组:①火器伤组:9只,在全麻状态下制作胸腰段(L1~L2)脊髓火器伤模型,分为伤后1,3,6h3个时间处死。②打击伤组:9只,L1节段脊髓行改良Allen’s打击,致伤力为500g·cm,处死时间同前。③空白对照组:2只,只麻醉,不造模,伤后6h处死。伤后不同时间点(伤后1,3,6h)和不同节段(伤点、近伤点、中伤点及远伤点)取材,采用SP法进行P53蛋白免疫组化染色,用TJTY-300型全自动图像分析仪测量P53免疫组织化学染色阳性物质吸光度。结果:经补充后20只猪进入结果分析。①脊髓损伤后3h打击伤组伤点,火器伤组近伤段脊髓P53蛋白的表达高于空白对照组(P<0.001),随着时间推移,打击伤组和火器伤组P53蛋白的表达呈升高趋势(P<0.001),且火器伤组要高于打击伤组(P<0.0001)。②在脊髓损伤后6h,打击伤组仅在伤点和近伤段P53蛋白的表达高于空白对照组(5.57±0.82,3.21±0.43,P<0.05),而火器伤组近伤段、中伤段及远段伤均高于空白对照组(6.46±0.66,4.27±0.39,1.16±0.17,P<0.05)。结论:①细胞凋亡基因p53在脊髓损伤中的表达有一定的时空性,在脊髓损伤后3h出现P53蛋白表达量的增加。②脊髓火器伤的波及范围较打击伤更为广泛。 相似文献
46.
Stavros I. Stavridis Petra Bücking Stefan Schaeren Bernhard Jeanneret Klaus John Schnake 《Archives of orthopaedic and trauma surgery》2010,130(1):119-123
Introduction
Implant removal because of pain after posterior fusion in the thoracic and lumbar spine is a widely performed operation. We conducted a retrospective study to examine whether patients benefit from implant removal.Patients and methods
57 patients (29 males, 28 females, mean age 46.5 years) who have undergone removal of pedicle screws because of pain and discomfort were interviewed 6–24 months postoperatively. Fracture was the initial diagnosis in 40% of the patients and degenerative spine disease in 58%. The following factors were evaluated: patient satisfaction and postoperative outcome, patients’ native language and psychological background, operative data, hospital stay and complications.Results
Pain decreased significantly from 62 to 48 on visual analogue scale postoperatively. Complications occurred in five patients (8.8%). 36 patients (61%) stated they had some benefit from the operation, but only seven patients (12%) were free of pain completely. 36 patients (63%) would undergo the same procedure again. Outcome in the subgroup of foreigners was significantly worse, though the psychological background did not affect the outcome. Preoperative diagnostic infiltration was helpful in 9 of 13 patients.Conclusion
Removal of pedicle screws because of back pain may be effective, but complete remission of symptoms could be achieved in only 12% of patients. However, 63% of patients would undergo hardware removal again. Preoperative diagnostic infiltration can help to predict the outcome but results are inconsistent. Communication difficulties may worsen the outcome. Surgeons should consider these results when planning implant removal and patients should be informed thoroughly to avoid too high expectations. 相似文献47.
M Bhatia B Singh N Nicolaou KJ Ravikumar 《Annals of the Royal College of Surgeons of England》2009,91(5):414-416
INTRODUCTION
Concern exists regarding potential damage to the rotator cuff from repeated corticosteroid injections into the subacromial space.PATIENTS AND METHODS
In this retrospective, case-controlled study, 230 consecutive patients presenting to three orthopaedic units with subacromial impingement and investigated as an end-point with magnetic resonance imaging (MRI) of the shoulder were divided into groups having received less than three or three or more subacromial injections of corticosteroids.RESULTS
With no significant difference in age and sex distribution, analysis by MRI showed no significant difference between the two groups in the incidence of rotator cuff tear (P < 1.0).CONCLUSIONS
This suggests that corticosteroid use in patients with subacromial impingement should not be considered a causative factor in rotator cuff tears. 相似文献48.
49.
Objective To explore the characteristics of arrhythmogenic right ventricular cardiomyopathy (ARVC). Methods Seven patients with arrhythmogenic right ventricular cardiomyopathy and 34 members of three families were studied. All patients and family members underwent history collection, clinical examination, electrocardiogram (ECG), two-dimensional echocardiography (2-DE) and a signal averaging electrocardiogram. Programmed ventricular stimulation was performed in five patients. Results All patients and family members had normal morphologic characteristics and normal function of the left ventricular by 2-DE. Fourteen persons had abnormal findings indicating ARVC. Five had enlargement of the right ventricular with diffused hypocontractility, eight had thin and systolic bulging in the focal anterior wall with hypokinesia and one had bulging of the inferior wall. Twenty-five persons (seven patients and 18 family members) had abnormal findings in ECG. Positive ventricular late potential was recorded in 13 persons (six patients). Two to three monomorphic ventricular tachycardia (VT) with left bundle branch block (LBBB) configurations were induced in five patients. Ventricular fibrillation was induced in two patients during the electrophysiologic study (EPS). Five patients had very high pacing threshold and/or ineffective pacing in one or many regions of the right ventricle. Two members of one family died suddenly. One member was a dwarf with ARVC. Spontaneous VT with a left bundle branch block (LBBB) configuration was recorded in five patients, polymorphic VT with extremely short coupling interval in one, and premature ventricular complexes with LBBB configuration in 12 (six patients). Conclusion Our familial study strongly suggests that ARVC may be a hereditary disease and it is helpful in the diagnosis and detection of ARVC. The most common manifestations were abnormal structure and function of the right ventricle and abnormal ECG of repolarization and ventricular arrhythmia which originates from the right ventricle. 相似文献
50.
The vascularity of 49 renal masses (26 malignant and 23 benign lesions) was investigated with duplex Doppler ultrasound. Doppler signals obtained at the margins of renal masses were defined as "tumor signals" when the Doppler-shifted frequency of the lesion exceeded the frequency shift in the ipsilateral main renal artery. These exceeded 2.5 kHz with a 3-MHz insonating frequency. Among the 26 renal masses that subsequently proved to be malignant, tumor signals were obtained in 15 of 18 (83%) untreated renal cell carcinomas, in three of four Wilms tumors, and in two patients with metastases to the kidney, but not in the one patient with lymphoma. None of the 23 benign renal masses demonstrated tumor signals. Tumor vascularity in malignant lesions gives rise to abnormal, high-velocity, Doppler-shifted signals that can help in the differential diagnosis of renal masses. 相似文献