改性水玻璃在VRH法中的应用研究

分别选择带有不同极性基团的1^#、2^#、3^#改性用树脂作为改性剂的主干材料,对CO2水玻璃砂用水玻璃进行改性处理,实验结果表明,改性水玻璃与普通水玻璃相比,明显提高了常温下的粘结强度,大大改善了热强度和高温强度,从根本上改变了800℃时的残留强度峰值。同时,采用VRH法研究了CO2水玻璃砂用改性水玻璃对不同硬化方法的适应性,并对VRH法有关工艺参数进行了测定。     

张居正经济改革思想探析

张居正是明中后期久负盛名的改革家,被时人誉为“救时宰相”。他通过对社会现实问题的深度考量,以强烈的忧患意识和高度的社会责任感,以无与伦比的才干和胆识,在万历初年主导了一场关乎衰败与振兴的历史活剧。本文以史实为依据。从五个方面对张居正经济改革思想做一系统探析,以期对今天的改革实践有所裨益。     

《老残游记》中艺术表现技法的创新

刘鹗创作《老残游记》时,将西方小说与中国传统白话小说的创作技巧巧妙结合起来,形成其独特的风格特征,其独特的中西合璧的艺术创新主要体现在形式体例、叙事模式、景物描写、心理描写等方面。     

构建企业战略联盟

构建企业战略联盟是加强中国现代企业国际竞争力的重要方式。战略联盟的核心思想即为“竞合”,改变传统的以竞争对手消失为目标的对抗性竞争,为合作而竞争,靠合作来竞争以寻求企业竞争优势。     

语文骨干教师专业素质问题研究

目前对教师成长所涉及的问题进行模糊估评的居多,而进行精细调查的还不常见。基于工作的研究,对教师的专业成长方面所涉及的问题进行调查与分析。重点调查分析语文教师目前存在的问题与困难、特长与不足、需要的培训指导方向以及培训指导的形式等方面的问题,并探讨解决问题的相关措施与方法。     

Bubble counter based on photoelectric technique for leakage detection of cryogenic valves

In order to overcome the inconvenience of manual bubble counting, a bubble counter based on photoelectric technique aiming for automatically detecting and measuring minute gas leakage of cryogenic valves is proposed. Experiments have been conducted on a self-built apparatus, testing the performance with different gas inlet strategies （bottom gas-inlet strategy and side gas-inlet strategy） and the influence of gas pipe length （0, 1, 2, 4, 6, 8, 10 m） and leakage rate （around 10, 20, 30, 40 bubbles/min） on first bubble time and bubble rate. A buffer of 110 cm^3 is inserted between leakage source and gas pipe to simulate the downstream cavum adjacent to the valve clack. Based on analyzing the experimental data, experiential parameters have also been summarized to guide leakage detection and measurement for engineering applications. A practical system has already been successfully applied in a cryogenic testing apparatus for cryogenic valves.     

光敏疗法治疗口腔癌15例报告

应用光敏疗法治疗口腔癌１５例，其中ＣＲ１例，ＰＲ８例，ＭＲ４例，ＮＲ２例，总有效率为６０％（ＣＲ＋ＰＲ），观察表明对浅表肿瘤疗效较好     

Opposite effects of miR-155 in the initial and later stages of lipopolysaccharide (LPS)-induced inflammatory response

Although microRNA-155(miR-155) is considered a pro-inflammatory mediator, cumulative evidence indicates that it also has anti-inflammatory effects in macrophages and dendritic cells. In this study, we identified the dramatic expression changes of more than half of potential miR-155-targeted genes upon lipopolysaccharide(LPS) stimulation; 223 genes were down-regulated and 85 genes were up-regulated, including suppressor of cytokine signaling 1(SOCS1) and transforming growth factor-β-activated kinase 1-binding protein 2(TAB2), two well-known genes involved in miR-155-mediated regulation of the Toll-like receptor 4(TLR4) signaling pathway. We also found that miR-155 acted as an anti-inflammatory mediator in the initial stage of LPS-induced inflammatory response mainly through repressing TAB2 protein translation, and as a proinflammatory mediator by down-regulating SOCS1 in the later stage. Meanwhile, overexpression of TAB2 3' untranslated region(UTR) in macrophages promoted the development of endotoxin tolerance by competing for binding with miR-155, which resulted in an elevated expression level of SOCS1 protein. These findings provide new insights for understanding the regulatory mechanisms in fine-tuning of LPS-induced innate immune response.     

区域协作构建肉羊繁育体系试点之思考

整合地方肉羊产业资源,试点以人工授精技术等现代繁殖技术应用为基础,建立繁育体系架构,将专业人员和养殖经营者群体结合,分别执行复杂程度不同的上下游技术措施,开展以肉羊杂种优势利用为主的区域协作,取得符合不同季节发情调控和妊娠的一般应用效果,分娩的羔羊具有明显杂种或本品种外貌和生长发育特征.以此分析我国农区羊业小规模养殖和散在分布特点决定了区域协作是建立合理繁育体系的选择.在技术上提出良好的繁育效果需要现代繁殖技术与传统繁殖方式结合,在实施路径上强调政府引导和基于数据监控机制的重要性,构建以养殖经营主体为基础的协会主导管理体系.旨在为解决羊业生产所面临繁育体系缺乏活力和良种利用率低等问题,以期为推进羊产业发展提供思路.     

社会创业视角下的社会价值创造研究与展望

社会创业是一种可持续创造价值的方式,其实质就是创造社会价值的完整过程.社会价值可以看作是组织将各项资源进行整合并投入各种要素、开展运营过程和实施最优化系统组合后,为个人、团队或整个社会生活所产生的影响与改善部分.结合现有研究中关于能力理论、改善社会福祉的需求和社会创业者个人特质等流派观点,对社会价值的内涵进行全面梳理,对社会价值评估方法进行总结.从商业模式、影响因素和创业过程模式三个角度分析,发现厘清概念、构建整合性分析框架以及数字化变革背景下的实证研究是未来重点的研究方向.