“阳图PS版感光液制备工程”通过技术鉴定

【本刊讯】　由陕西省印刷科学技术研究所进行的“阳图ＰＳ版感光液制备工程”于１９９９年１１月２５日在西安通过了由陕西省新闻出版局主持的技术鉴定。“阳图ＰＳ版感光液制备工程”是陕西省印刷科学技术研究所根据本所实际情况及国内市场情况,以围绕所内重点产品,解决关键技术为宗旨进行的中试课题研究。经过近两年的试验研究和工程建设。目前已达到了规模生产的要求,并进行了批量生产,生产的ＳＹ－Ｉ型阳图ＰＳ版感光液经多家ＰＳ版生产厂及印刷使用效果良好,得到了用户对产品质量的认可,经陕西省产品质量监督检验所检测也符合国…     

新型宽带接入技术及其应用前景

介绍了ＰＯＮ、ＸＤＳＬ、ＨＦＣ、ＬＭＤＳ４种新型的宽带接入技术，并就国内国际的具体发展情况分析了这些宽带接入技术在网络通信中的应用前景。     

新型高效防水剂—SP406及其在高层建筑底板混凝土工程中的应用

本文对新型高效防水剂－ＳＰ４０６的特点，机理，适用范围及产品性能进行了简要的介绍，然后通过几个高层建筑基础工程底板混凝 实例进一步说明ＳＰ４０６的使用情况。     

APS以及它的发展前景

简单介绍了ＡＰＳ（高级照相系统）的特点，并报道了柯达等公司的诸多ＡＰＳ新产品。新系统尽管具有很多优点，但其市场的开发将不会一帆风顺，起码在相当长的时间内，ＡＰＳ在我国决不会上升为占统治地位的规格形式。国外大力开发ＡＰＳ系统的深层意义在于强化传统照相技术的市场地位和寻求新的赢利手段。目前，我们对ＡＰＳ应取坐观成败的态度。     

99年国际半导体设备与材料展览暨研讨会在北京召开

ＳＥＭＩＣＯＮＣｈｉｎａ９９于１９９９年３月１７～１８日在中国国际贸易中心召开。来自国内外相关专业的专家、学者出席了会议。国际半导体设备与材料学会（ＳＥＭＩ）副总裁致欢迎词。本次会议主要内容有：中国市场情况介绍、生产技术、圆片生产线设备、材料的新进展、工艺技术、测试及封装等。信息产业部电子信息产品管理司徐司长作了中国ＩＣ市场与产业发展的报告；上海华虹ＮＥＣ总经理夏仲瑞介绍了９０９工程芯片生产线项目进展情况；有关的负责同志介绍了深圳半导体工业发展情况；ＡｐｐｌｉｅｄＭａｔｅｒｉａｌｓ副总裁介绍了半…     

九种APS彩卷使用效果介绍

九种ＡＰＳ彩卷使用效果介绍中原对于摄影界人士来说，１９９６年是值得纪念的年份。这一年，ＡＰＳ相机和ＡＰＳ胶卷同世人见面，标志着摄影领域在前进的道路上又迈出了一大步。本文对ＡＰＳ彩色胶卷情况做简单介绍。ＩＳＯ１００ＡＰＳ彩色胶卷此类彩卷有３种，分别由３...     

增塑剂DOP的生产和需求动向

简要介绍了增塑剂ＤＯＰ的国内外生产和消费、工艺现状及动向。我国ＤＯＰ生产趋向大规模生产。今后ＤＯＰ的消费量还会增长。     

EPS在包装行业中的地位和作用

ＥＰＳ作为塑料包装材料的主要种类之一，以其优良的性能在国民经济发展中发挥着重要的作用，但因ＥＰＳ材料有其自身的缺点和人们消费习惯的因素，引发了目前ＥＰＳ工业在发展中存在的窘境。本文就这一问题从不同方面论述了ＥＰＳ材料在我国包装材料业中的重要地位和作用。     

国家八六三计划特种工程塑料研究开发中心在长春建成

具有研制、生产、开发功能的“国家八六三计划长春特种工程塑料研究开发中心”在长春建成，该中心由一个３０ｔ／ａ生产规模的ＰＥＥＫ生产线和一个３００ｔ／ａ生产规模的ＰＥＳ生产线及一个特种工程塑料加工技术研究室组成。经过国家连续三个五年计划的支持，由吉林大学研制的ＰＥＥＫ和ＰＥＳ两个品种在我国的特种工程塑料研究领域已经取得了相对优势。市场开发取得了可喜的进展。     

中国照相感光材料工业呈上升趋势

数字图像处理网络化和影像市场全球化加快了国内感光材料工业的数码化进程，国内照相感光材料的生产产量和市场需求量有所扩大。本文叙述了2001--2007年国内照相感光材料工业上升的经营情况，照相材料产品结构继续调整和感光材料生产厂商不断推出消费类、医疗类和印刷类新影像产品等趋势。总之，数字影像产品已经成为国内照相器材市场的主流。     

圆柱贮箱液体"平面"晃动波的稳定性研究

应用Floquet-Lyapunov方法研究了作水平横向运动圆柱贮箱中液体"平面"晃动波的稳定性问题.首先利用Narimanov-Moiseev三阶渐近假设关系,推导出描述液体作非线性共振晃动的5维渐近模态系统.根据此模态系统,推导出液体"平面"晃动波的频率响应方程并应用Floquet-Lyapunov方法研究了其稳定性和稳定区间.数值仿真结果表明虽然其频率响应方程与Duffing方程的频率响应方程具有相同的结构,但两者的稳定性范围有明显的不同.此外,当经过某一临界充液比时,液体的"平面"晃动将由"软"弹簧特性转变为"硬"弹簧特性.理论分析结果与实验有很好的吻合.     

标准化助推城市可持续发展

党的十八提出全面建成小康社会的五位一体总布局,城镇化建设目标艰巨而紧迫。我国城市化建设虽然取得巨大成就,但也存在着诸多问题。我国目前还没有一套科学的、完整的、系统的、公认的、可检测的城市可持续发展指标体系,而主要发达国家城市可持续发展已有成熟的经验和标准,并且在国际标准化领域达成了共识。我国急需在城市可持续发展方面加强标准化工作,参考国际和主要发达国家城市可持续发展标准化成果,建立符合中国特色社会主义需要的城市可持续发展标准体系,助推我国城市化进程的科学发展。     

微电子机械系统进展和趋势

本文对微电子机械系统的进展和趋势提出了一些观点性意见，在阐述了微机械技术和ＭＥＭＳ的特点后，强调发展ＭＥＭＳ器件要利用其特点而避免其短处，并为此列举了五个方面成功的ＭＥＭＳ器件。最后，本文讨论了了ＭＥＭＳ进一步发展的趋势和提出了我国发展ＭＥＭＳ的意见。     

Practice of Unconventional Gas Development and Engineering Management Innovation in China

This article analyses the recent progressive increase in resourcequantity and production quantity of unconventional natural gas in China, describes its natural properties and the concepts, strategies and approaches of its development, summarizes the special techniques, management concepts and development modes formed in the process of its development, and puts forward proposals to accelerate the development of unconventional natural gas of China. The technically recoverable reserve of unconventional natural gas is 1.7 times that of conventional natural gas and its output in 2012 accounted for 41.8% of the total output in China. Chinese tight gas development has gained success, coal-bed methane development and shale gas production pilots have made important progresses. As the key feature of unconventional natural gas is "low grade", for the effective scale development, developers must build up the engineering concept of low-grade resources development, adhere to the low cost strategy, take the development route of "a step backward and then a step forward", apply such ideas and methods of engineering management as low cost dualistic integrative innovation, full control network management, economic limit theory, integrated operation and "four orientations" engineering management, establish a "two lows" engineering management system, and take reference of the successful development mode of the tight gas in Sulige and the coal-bed methane in the Qinshui basin. In order to achieve the objective of rapid development of nonconventional natural gas in China and to accelerate the development pace, the government should continue to increase support, to speed up the reform of natural gas price adjustment, to set up national comprehensive development and utilization demonstration areas, to input in sustainable technological research and to promote engineering management innovation.?     

地理信息系统GIS自定义平台模型的研究与建立

本文分析并总结了GIS软件开发中最通用的一些功能的实现,结合目前流行的软件复用技术,并通过对 GIS应用软件开发的现状和技术的对比、分析、归纳研究,提出了解决GIS应用软件在开发上的低水平重复、软件不能满足实际需要等问题,建立了六个以“业务自定义”、“界面自定义”、“字典自定义”、“报表自定义”、“流程自定义”和“内置GIS功能的组件”为核心要素的GIS自定义平台模型。     

宁强羌族刺绣纹样的转译与创新设计研究

目的 纹样是传统民间美术艺术形式的重要特征,而它的创新性演变却非常匮乏,单纯的提取无法满足其在现代审美中的传播与发展。抽取出一种适用于“非遗”纹样的转译设计方法,使传统纹样更好地满足时代特征的审美需求。方法 通过对陕西“非遗”宁强羌族刺绣传统纹样的分析,明确其典型特征,提取核心纹样图案作为初始模型,利用转译原理生成新的纹样设计方案。基于转译原理的传统纹样再设计,既保留了传统纹样的基因特征,又创新性的挖掘了其遗传因素,为传统刺绣业在现代文化中的转型提供了巨大的创新设计源泉和方法。结论 某款宁强羌族刺绣的纹样再设计实验,论证了其方法的可行性和有效性。     

Effectiveness of community-based injury prevention. Long-term injury rate levels, changes, and trends for 14 Swedish WHO-designated Safe Communities

This study investigates the injury rate levels, changes, and trends between 1987 and 2002 for the 14 Swedish municipalities designated as WHO Safe Communities. The injury rate was defined as the number of injured patients discharged from hospital per 1000 persons. Injury rates were age standardised. Each municipality was compared with its respective municipality group, according to a classification of Sweden's 288 municipalities into nine groups based on numerous structural parameters. The average injury rate levels for the 14 WHO-designated Safe Community municipalities ranged from 11.54 to 19.09 per 1000 population during the study period, which was defined as the time period during which a municipality's injury prevention program has been operational. Eleven of 14 municipalities had higher levels than their corresponding municipality groups. Five of the 14 municipalities "outperformed" their respective municipality groups and achieved a greater relative injury rate decrease during the study period. The trends for the 14 municipalities in relation to their municipality groups showed an inconsistent pattern, with only four municipalities exhibiting overall favourable trends for the study period.     

长周期结构增强镁合金的研究进展

镁合金具有低密度、高比强度、易回收利用等优点,在电子、汽车、航空航天等领域得到了广泛的应用。但是镁合金强度低、变形加工困难等缺点成为阻碍其大规模应用的主要问题。长周期堆垛有序(LPSO)结构增强镁合金具有较高的强度和较好的塑性,引起了人们的广泛关注。列举了镁合金中5种长周期结构类型及其研究进展,分析了常见的4种长周期结构制备方法的特点,阐述了5种长周期结构特征及其表征方法,分析了长周期结构的强化机制,指出了今后的研究方向。     

调整结构 转型发展

在经历了30年高速发展之后,我国已进入了一个调整结构、转型发展的关键期。笔者分析了在GDP(gross domestic product)结构、分配结构、产业结构、能源结构等方面存在的问题和结构调整的方向。在此基础上阐述了转变发展方式的内涵和必要性,以及转变发展方式的五个坚持。指出：不良的经济增长会损害未来,战略机遇期首先是转变发展方式的机遇期。转变发展方式必须转变政绩观,改进政绩评价体系。最后,提出了工程领域转型发展的几个方向。     

In vitro evaluation of a multispecies oral biofilm over antibacterial coated titanium surfaces

Peri-implantitis is an infectious disease that affects the supporting soft and hard tissues around dental implants and its prevalence is increasing considerably. The development of antibacterial strategies, such as titanium antibacterial-coated surfaces, may be a promising strategy to prevent the onset and progression of peri-implantitis. The aim of this study was to quantify the biofilm adhesion and bacterial cell viability over titanium disc with or without antibacterial surface treatment. Five bacterial strains were used to develop a multispecies oral biofilm. The selected species represent initial (Streptococcus oralis and Actinomyces viscosus), early (Veillonella parvula), secondary (Fusobacterium nucleatum) and late (Porphyromonas gingivalis) colonizers. Bacteria were sequentially inoculated over seven different types of titanium surfaces, combining different roughness level and antibacterial coatings: silver nanoparticles and TESPSA silanization. Biofilm formation, cellular viability and bacterial quantification over each surface were analyzed using scanning electron microscopy, confocal microscopy and real time PCR. Biofilm formation over titanium surfaces with different bacterial morphologies could be observed. TESPSA was able to significantly reduce the cellular viability when compared to all the surfaces (p?<?0.05). Silver deposition on titanium surface did not show improved results in terms of biofilm adhesion and cellular viability when compared to its corresponding non-coated surface. The total amount of bacterial biofilm did not significantly differ between groups (p?>?0.05). TESPSA was able to reduce biofilm adhesion and cellular viability. However, silver deposition on titanium surface seemed not to confer these antibacterial properties.

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