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赵志成 《中国科技资源导刊 (中国信息导报)》2003,(12):22-23
随着我国经济的快速发展、城市化进程的加快、城市人口的增加,城市生活垃圾约以每年10％的速度递增,垃圾围城、环境污染日趋严重。 一、城市生活垃圾处理的现状 目前,我国城市的生活垃圾绝大部分处于“混合倾倒、混合清运、 相似文献
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Objective: To explore the characteristics of NF-κB activation in the progress of pancreatitis, the relationship with expression of TNF-α in the inflammatory reaction, and prevent the exacerbation of pancreatitis by using NAC. Method: Forty-eight rats were divided into three groups: therapy (group C), pancreatitis (group B) and control (group A). NAC served as the inhibitor of NF-κB activation. In the time intervals of 1.5, 3.0, 6.0, 12.0 hour, NF-κB activation was detected with flow cytometry (FCM) and the expression of TNF-α mRNA and protein with in situ hybridization (ISH) and enzyme-linked immuno-sorbent assay (ELISA) respectively. Meanwhile, the level of lipase and amylase in the serum was assayed and the pathological change was evaluated. Result: NF-κB activation in the pancreatitis group was higher than that in the control group (P<0.01), peaked at 3 hours, and was depressed by the inhibitor of NF-κB, NAC. The expression of TNF-α as well as the level of lipase and amylase in the serum also rose synchronously with activation of NF-κB. In contrast to group A, it was significantly different (P<0.01) in group B. After using NAC in group C, all of these values were decreased and the inflammatory reaction in the pancreas abated evidently. The pathology changes of the pancreas were shown to be alleviated in group C. Conclusion: First, NF-κB activity is intensively initiated in the course of pancreatitis and shown to have closely relationship with the release of cytokines. Second, use of NAC markedly depressed NF-κB activation. TNF-α expression is down regulated by cytokines. It is suggested that NAC probably acts as a useful agent for treatment of pancreatitis by indirectly inhibiting activation of NF-κB. 相似文献
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面对新课改后的高考,只有在高三复习时进行高效复习,才可能取得理想的成绩。本文针对黑龙江省2012年高考试题的分析,对2013年高考的教材复习、专项知识训练、综合复习和模拟训练等进行了详细的设计和安排,并针对每一环节提出了具体操作办法,为2013年高考的英语复习提供了参考和建议。 相似文献
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班主任除了要有较强的教育教学能力和班级管理能力外,还应该对班级管理中出现的各种问题采取行之有效的方法解读,而对于科任教师与学生间出现的不和谐师生关系,则是其中存在的主要问题。本文根据班级管理中的教育案例,介绍如何在班级科任教师和学生间建立和谐的师生关系,促进班级发展。 相似文献
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本文以国家乡村振兴战略为背景,以地方高校LDXY为例,探讨了大学生返乡创业的意愿及其影响因素。本文采用问卷调查法,对400名大学生进行了返乡创业意愿的调研,并运用SPSS和AMOS等统计软件对数据进行了实证分析。本文从家庭因素、学校创业教育因素和社会因素三个方面分析了大学生返乡创业意愿的影响机制,得出以下结论：家庭因素对大学生返乡创业意愿不具有显著正向影响,可能与新时代的大学生思想独立、追求个人价值实现有关;社会因素对高校创业教育及大学生返乡创业意愿不具有显著正向影响,可能与测试样本所在地方经济发展水平不理想、政府返乡创业政策有关;学校创业教育因素对大学生返乡创业意愿具有显著正向影响,说明高校对学生的创业能力培养和创业扶助工作是有成效的;家庭因素通过影响学校创业教育因素间接影响大学生返乡创业意愿,说明家庭因素会影响学生的高校选择,从而促进高校将更加重视学生创新创业教育工作。本文的研究结果为政府和高校完善大学生返乡创业支持政策和创新创业教育工作提供了建议。 相似文献