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831.
侯海生 《辽宁广播电视大学学报》2001,(2):33-34
鲁迅《阿Q正传》中的阿Q和果戈里《外套》中的亚卡基,是世界学史上两个不配的学形象。本就其生活环境、性格特征、人物形象的意义等方面进行比较分析,旨在探求两学巨匠用“含泪的笑”的讽刺手法塑造的这两个人物形象艺术震撼力。正如马克思曾经预言的即样:“如果全民族感到了羞耻即它就会像一头准备向前扑去而往后退缩的狮子。”也正是本要研究这两个异国异族的艺术形象的目的所在。 相似文献
832.
Aiming at disclosing the quantitative effects of Coulomb forces on the filtration efficiency of aerosol particles, a three-dimensional random fiber model was established to describe the microstructure of fibrous filters. Then, computational models including the flow model, particle model, and electric field model were constructed to estimate the filtration efficiency using the Fluent custom user-defined function program, neglecting the non-uniformity of the fiber potential and the particle charge distribution. The simulation results using the established models agreed with the data in the literature. In particular, the electric field force was found to be one of the important factors required to improve the filtration efficiency estimation accuracy for the ultrafine particles. Moreover, the variation tendencies of the filtration efficiency and the pressure drop of fibrous filters were studied based on the influence factors of the fiber potential, particle charge-to-mass ratio, solid volume fraction, fiber diameter, and face velocity. The established models and estimated results will provide important guidance on the design of high-efficiency particulate air filters for aerosol particles. 相似文献
833.
党的十六大把加快构建学习型社会作为全面建设高水平小康社会的一项重要目标,要在2020年实现全面建设高水平小康社会的同时,形成全民学习、终身学习的学习型社会。所以,推进高校成人高等教育全面发展,加快发展终身型、素质型、开放型、创新型高校成人高等教育,是达到建设高水平小康社会的重要途径之一。 相似文献
834.
Da-wei Yao Ze-zhong Yu Na Li Yu-nong Hou Jia-rong Xu De-ji Yang 《Journal of Zhejiang University. Science. B》2017,18(6):474-480
The aim of this research was to develop effective alternative therapies to reduce antibiotic use in animal agriculture. In this study, the efficacy of copper-modified palygorskite (CM-Pal) in preventing diarrhea caused by Salmonella was specifically examined both in vitro and in vivo. The CM-Pal was prepared with palygorskite (Pal) and copper nitrate. The antibacterial activity of the CM-Pal was detected by comparing the differences in cell numbers on plate count agar before and after adding the CM-Pal to Salmonella typhimurium cultures. Seventy ICR mice were then allocated into seven groups. Five groups (the treatment groups) were infected with S. typhimurium by intraperitoneal (i.p.) injection and were given Pal, CM-Pal, montmorillonite powder, gentamicin, and physiological saline, respectively. One group (the prevention group) was given CM-Pal before infection with S. typhimurium. Another group (the uninfected group) was not infected with S. typhimurium. The effects of Pal, CM-Pal, montmorillonite powder, and gentamicin on the treatment or prevention of diarrhea in the mice were examined by stool studies, fecal scoring, and assessment of growth performance and villus height. The CM-Pal had satisfactory anti-bacterial properties in vitro: the antibacterial rate was 100% after 2 h incubation with S. typhimurium NJS1 cultures (1×106 colony-forming units (CFU)/ml). In the in vivo experiment, the CM-Pal exerted superior effects in the treatment and prevention of diarrhea in mice compared with Pal, montmorillonite powder, and gentamicin. In the CM-Pal group, no mice showed signs of diarrhea at 24 h post infection (p.i.), and all mice fully recovered from infection. However, the Pal group, montmorillonite group, and gentamicin group only recovered after 48, 48, and 96 h, respectively. The villus height level in the CM-Pal treatment group recovered at 3 d p.i. However, the recovery time of the other groups was longer (at least 5 d). The CM-Pal prevention group had a better effect on weight gain than the other groups. This study suggested that CM-Pal may be an effective alternative to conventional antibiotics for the treatment and prevention of animal diarrhea caused by Salmonella. 相似文献
835.
Image reconstruction in elecrical impedance tomography(EIT)is a highly ill-posed inverse problem,Regularization techniques must be used in order to solve the problem,In this paper,a new regularization method based on the spatial filtering theory is proposed.The new regularized reconstruction for EIT is independent of the estimation of impedance distribution,so it can be implemented more easily than the maxiumum a posteriori(MAP) method.The regularization level in our proposed method varies spatially so as to be suited to the correlation character of the object‘s impedance distribution.We implemented our regularization method with two dimensional computer simulations.The experimental results indicate that the quality of the reconstructed impedance images with the descibed regularization method based on spatial filtering theory is better than that with Tikhonov method. 相似文献
836.
王厚怀 《黄冈师范学院学报》2008,28(1):31-33
许多选注本将《诗经·蒹葭》中的“苍苍”、“凄凄”、“采采”全都解释为“茂盛(貌)”,其依据值得怀疑。它们绝不是简单的“换韵”。作为变换的中心词,它们负载着特定的诗义信息;作为融情的景语,它们的意义变化,表明三章诗意的逐层加深。 相似文献
837.
838.
恩格斯的《反杜林论》第二编"政治经济学编",批判和清算了杜林的错误经济观点,科学简明地阐述了马克思在《资本论》中的主要观点,推动了马克思主义经济学说的传播,是弘扬马克思主义经济思想的重要文献;对我们认识当代资本主义的本质,建设和完善社会主义市场经济提供了科学的方法论,有着重要的理论和现实意义. 相似文献
839.
对中外高等教育大众化的比较分析显示,经济发展与高等教育大众化,高等教育大众化与高职教育发展之间存在深刻的互动关系。在有中国特色的高等教育大众化发展进程中,高职教育发展必须健全学制系统,完善法制体系,创新办学体制。 相似文献
840.
京东燕山地区盛产栗,历史久远,中外闻名,多年来畅销国内外市场,为燕山地区致富作出了贡献。然而,由于产量低,加之商品意识不强,一直以初级农产品出售,今后应瞄准板栗附加植,多渠道外销,达到高产高效开发京板栗资源,为山区奔小康服务。 相似文献