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目的:比较单眼水平直肌后徙联合缩短手术与内直肌斜向缩短术对集合不足型外斜视的治疗效果。方法:前瞻性研究。对2016年9月到2017年2月在郑州大学第一附属医院就诊的36例集合不足型外斜视患者行手术治疗,随访时间≥6个月。根据手术方式不同分为3组:单眼水平直肌后徙联合缩短手术组(A组,16例)、单眼内直肌斜向缩短术组(B组,9例)和双眼内直肌斜向缩短术组(C组,11例)。A组中外直肌按照看远斜视度数后徙,内直肌按照看近斜视度数缩短。B组和C组中内直肌肌止端上端按照看远斜视度数缩短,肌止端下端按照看近斜视度数缩短。术后正位的评价标准为看远斜视度在±10 △ 以内。采用Fisher精确概率检验、重复测量方差分析进行数据分析。结果:随访期末,A组正位占比为14/16例,显著高于B组(2/9例)和C组(4/11例),差异具有统计学意义(均P < 0.05)。A组看近和看远斜视度均小于其他2组,差异具有统计学意义(均P < 0.05)。3组间手术后看近和看远斜视度的差异无统计学意义。结论:单眼水平直肌后徙联合缩短手术中外直肌按照看远斜视度数后徙,内直肌按照看近斜视度数缩短设计术式,可以有效治疗集合不足型外斜视,优于内直肌斜向缩短手术。  相似文献   
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Ground-glass opacity (GGO) is a common CT imaging sign on high-resolution CT, which means the lesion is more likely to be malignant compared to common solid lung nodules. The automatic recognition of GGO CT imaging signs is of great importance for early diagnosis and possible cure of lung cancers. The present GGO recognition methods employ traditional low-level features and system performance improves slowly. Considering the high-performance of CNN model in computer vision field, we proposed an automatic recognition method of 3D GGO CT imaging signs through the fusion of hybrid resampling and layer-wise fine-tuning CNN models in this paper. Our hybrid resampling is performed on multi-views and multi-receptive fields, which reduces the risk of missing small or large GGOs by adopting representative sampling panels and processing GGOs with multiple scales simultaneously. The layer-wise fine-tuning strategy has the ability to obtain the optimal fine-tuning model. Multi-CNN models fusion strategy obtains better performance than any single trained model. We evaluated our method on the GGO nodule samples in publicly available LIDC-IDRI dataset of chest CT scans. The experimental results show that our method yields excellent results with 96.64% sensitivity, 71.43% specificity, and 0.83 F1 score. Our method is a promising approach to apply deep learning method to computer-aided analysis of specific CT imaging signs with insufficient labeled images.
Graphical abstract We proposed an automatic recognition method of 3D GGO CT imaging signs through the fusion of hybrid resampling and layer-wise fine-tuning CNN models in this paper. Our hybrid resampling reduces the risk of missing small or large GGOs by adopting representative sampling panels and processing GGOs with multiple scales simultaneously. The layer-wise fine-tuning strategy has ability to obtain the optimal fine-tuning model. Our method is a promising approach to apply deep learning method to computer-aided analysis of specific CT imaging signs with insufficient labeled images.
  相似文献   
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JB Ma  SX Yao  H  Li  Q  Pei JF  Yao 《美中国际创伤杂志》2014,(1):1-4,9
In this case, a male patient presented with a clinically and radiographieally unstable slipped capital femoral epiphysis (SCFE) as well as slipped calcaneal epiphysis years. Subsequent thorough at the age of 23 work-up revealed that he had some features of rickets and labo- ratory test demonstrated he had hypophos- phatemia (2.3mg/dl), normocalcemia, normal vi- tamin D metabolite levels, and secondary hy- perparathyroidism.  相似文献   
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生长激素释放激素(growth hormone-releasing hormone,GHRH)又称生长激素释放因子(growth hormone-releasing factor,GRF),是由下丘脑分泌的一种肽类激素,具有促进垂体促生长素细胞合成和释放生长激素(growth hormone,GH)的作用,临床上可以用来治疗矮小症、HIV相关的脂肪营养不良、代谢综合征、艾滋病、创伤等疾病。然而GHRH应用到临床上的最大不足就是体内半衰期比较短(一般10~20min)。为了延长GHRH在体内的半衰期,减少频繁用药给患者带来的不适,须对GHRH进行修饰,以期达到半衰期显著延长,免疫原性有所降低。为此,本文主要综述了GHRH以及GHRH长效修饰的研究进展,尤其是PEG修饰GHRH的最新进展。  相似文献   
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[目的]观察滋肾宁神胶囊对D-半乳糖所致亚急性衰老模型大鼠的影响.[方法]选用SD大鼠随机分成空白对照组,模型组,七宝美髯丸组(剂量为2 g·kg-1·d-1),滋肾宁神丸组(剂量为3.33 g·kg-1·d-1),滋肾宁神胶囊高、中、低剂量组(剂量分别为9.96、4.98、2.49 g·kg-1·d-1);除空白对照...  相似文献   
7.
Facioscapulohumeral muscular dystrophy (FSHD) is the third most common inherited muscular dystrophy with markedly clinical variability and complex genetic cause. Several reports pertaining to the Caucasian population have confirmed that there are 4qA and 4qB variants of the 4qter subtelomere, and FSHD is uniquely associated with the 4qA variant. However, few data relevant to the Chinese population have been published. In present paper, detailed clinical and genetic re-evaluations were performed in members of four special families who had been initially diagnosed as atypical or asymptomatic FSHD based only on the D4Z4 repeat length analysis. The FSHD-sized D4Z4 repeats in the probands from families 1, 2 and 3 were identified as 4qB variants. These patients were further confirmed as limb-girdle muscular dystrophy (LGMD2) or myotonic dystrophy (DM1) by molecular analyses. Specifically, we identified a 4qB variant on chromosome 10 in the healthy members of the fourth FSHD family with complex D4Z4 rearrangements of two exchanged repeat arrays. For the first time, we demonstrated in the Chinese population that D4Z4 contractions on the 4qB variant do not cause FSHD and 4qB variant on chromosome 10 might also represent intermediate structures in the transition from 4q to 10q. Furthermore, our results emphasize that D4Z4 repeat length analysis alone is not sufficient for the diagnosis of FSHD, especially when used as an exclusion criterion. This analysis should be accompanied by 4qA/4qB variant determination and integrated chromosome assignments, especially in patients with obscure and unclassified myopathies similar to atypical forms of FSHD.  相似文献   
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荧光示踪法研究逆行岛状皮瓣静脉回流   总被引:3,自引:0,他引:3  
目的探讨采用荧光示踪法研究逆行岛状皮瓣静脉回流的可行性,并初步观察静脉回流规律。方法20只新西兰大白兔,每只取耳静脉血0.ImL,分离RBC并用FITC标记。流式细胞仪检测已标记的RBC阳性率及荧光强度,倒置荧光显微镜观察其形态。取20只新西兰大白兔,在动物双侧后肢内侧分别建立4cm&#215;3cm隐动、静脉逆行岛状皮瓣模型(n=10)和顺行岛状皮瓣模型(n=10),血管蒂长3cm。将一侧后肢随机设定为实验组,皮瓣制备后注射已标记的RBC悬液5pL;对侧为对照组,不注射示踪剂。实验组按顺行和逆行皮瓣分成两组,即顺行皮瓣组和逆行皮瓣组,每组10个;再根据注入示踪剂途径不同,分为动脉和静脉2个亚组,每亚组5个皮瓣。注射示踪剂5S后取下皮瓣立即冷冻,取连续的3张冰冻切片(5~7pm),其中2张行HE染色和GENMED染色,另]张不染色直接压片,荧光显微镜观察荧光分布。结果流式细胞仪分析FITC标记的RBC阳性率在99%以上,荧光强度均≥10。;倒置荧光显微镜下标记的RBC呈均匀分布的绿色荧光,荧光强度均匀、稳定。冰冻切片显示实验组皮瓣蒂部均出现荧光,对照组未见荧光。顺行岛状皮瓣组荧光主要分布在静脉腔、静脉壁、动脉内膜和外膜;逆行岛状皮瓣组荧光分布在动脉内膜、外膜和静脉壁。结论荧光示踪剂可用于静脉回流研究,顺行岛状皮瓣静脉主要通过静脉腔、静脉壁、动脉内膜和外膜回流;逆行岛状皮瓣静脉主要通过动脉内膜、外膜和静脉壁的“迷宫式途径”回流。  相似文献   
10.
卢慕荣  吴文琤 《现代医院》2008,8(12):131-132
目的为了使护理本科生在较短的实习期内,以最快最好的方法,理解和掌握危重病学科(ICU)护理工作的重点和难点,提高护生对危重病患者的整体观察和抢救应急能力。方法在护理本科生临床带教中实验组应用阶段性目标教学法,根据其在ICU的实习大纲,将整个临床实习分为了解评估、熟悉练习、强化提高及考核评价4阶段进行。对照组是在外院实习但未应用阶段性目标教学法的学生。结果实验组护本生在理论和操作考核成绩优于对照组,学生的实习总体自我评价满意度明显高于对照组(p<0.05)。结论阶段性目标教学法能使护生学习目标更加明确,减少了学习的盲目性,充分发挥学生的主观能动性,由过去的被动学习转变为主动学习,在一定程度上培养了学生对危重病患者的整体观察和抢救应急能力;同时规范化管理,加强了带教老师的责任感,提高带教队伍的整体素质和教学质量。  相似文献   
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