让心灵去旅行——大金龙借草原之旅启动摄影大赛

记得小时候学《敕勒歌》:"敕勒川,阴山下,天似穹庐,笼盖四野.天苍苍,野茫茫,风吹草低见牛羊".我被大草原的迷人景色和游牧民族的生活所吸引.长大以后,当听到腾格尔荡气回肠的《天堂》后,儿时的梦想时不常地被唤醒.总希望有一天能在繁忙紧张的工作之余亲临茫茫大草原放飞一下心灵.终于,这个愿望随着大金龙草原之旅而得以实现.     

都江堰公交董事长欧云南应邀参加"9·3"阅兵观礼

9月3日,主题为"铭记历史、缅怀先烈、珍爱和平、开创未来"的纪念中国人民抗日战争暨世界反法西斯战争胜利70周年阅兵式在北京天安门广场隆重举行.此次阅兵是新中国历史上第15次大型阅兵,也是首次在非国庆节日举行的大型阅兵,65位外国国家元首、政府首脑、政府高级别代表、联合国等国际组织负责人、前政要等应邀出席纪念活动.作为全国"五·一"劳动奖章获得者,都江堰市公共交通有限责任公司董事长欧云南有幸应邀前往阅兵现场观礼.这一殊荣不仅让他个人感到自豪,还让都江堰城市公交乃至四川、全国公交为之骄傲.     

玉柴展示民族动力先进性

在不久前结束的第四届上海国际发动机及制造技术展览会上,国内外优秀发动机企业同台展示了当前发动机行业的先进技术和产品.广西玉柴机器股份有限公司展出的9款高标准、低排放发动机成为本次展会的一大亮点.原机械工业部部长何光远、中国内燃机工业协会理事长倪宏杰等业内知名人士亲临玉柴展馆.     

精细赢得回头客专业创造新价值——大金龙连续第四年批量出口沙特

10月14日,又一批大金龙132辆高档豪华客车在厦门东渡码头顺利上船,驶往沙特阿拉伯.至此,大金龙07年前三季度出口进一步放量,出口额约为去年全年的1.5倍,创汇比去年同期高149.41%,出口量较去年同期增长113.8%.     

斯堪尼亚上半年业绩卓著巴西工厂迎来50周岁生日

素有"公路之王"美誉的欧洲高端商用汽车制造商斯堪尼亚在2007年上半年市场表现卓越,全球销量再创新高.据其7月26日发布的中期报告显示:今年1～6月,斯堪尼亚全球销售量累积达到49 822辆,同比增幅高达39%.销售额超过43.3亿欧元,同比增长14%.其中卡车销售量45708辆,同比增长38%;巴士4114辆,同比增长40%.     

公路胶带——新型反光标线材料与工艺

初冬的北京,气候依然清爽宜人。选定了一个下午,我与交通部科学研究院认证中心的同志们一起来到离北京最近的地属河北境内的涿州市河北联盟科技有限公司,考察和听取有关交通认证情况汇报。早就听说北京周边的涿州开发区变化特别大,百闻不如一见,果然是马路宽阔、绿树成行,到处是现代化建设的景象。河北联盟科技有限公司就坐落在这里。     

智能交通——创造美好生活ITS——For a Better Life——第14届智能交通世界大会在京隆重举行

盛况空前的大会 第14届智能交通世界大会于2007年10月9～13日在北京展览馆隆重举行,国务委员陈至立发来贺信,全国政协副主席罗豪才宣布大会开幕,科技部部长万钢、交通部副部长翁孟勇、北京市常务副市长吉林等出席了开幕式.     

大金龙“绿动将军”:一部公交车与一座城市的幸福——深度体验厦门插电式混合动力公交车

<正>2015年的这个春天,鹭岛人民倍感幸福。自贸区、"一带一路"核心区……利好政策的东风,让厦门这座"海上花园"越来越有"国际范"。幸福还在于无处不在的"小清新",厦门去年空气质量达到优良天数超过340天,这是厦门人民时时刻刻都能拥有的"幸福感",也让游客们直呼"醉了!"兼顾经济发展与环境保护之间的平衡,是厦门的战略规划。如何在追求"国际范"的同时,保持"小清新"?厦门市政府用实际行动给出了答案:大力发展绿色公交、新能源公交。     

基于人性化的城市道路减速带设置

减速带作为一种强化型的道路交通安全设施,在遏制交通事故的发生方面发挥了重要的作用.但由于减速带在设计和使用方法上存在着一些缺陷,给过往行驶车辆造成不便,因此有必要从人性化的角度对城市道路减速带设置进行探讨,以有效地改善其对城市道路过往车辆的不利影响.     

土地耕种与"田面权"之争——以抗战胜利后嘉善县的佃权纠纷为中心

本文利用嘉善县一批抗战胜利后的租佃纠纷档案,分析了"田面权"分化的具体过程."田面权"的产生让土地耕种者看到了获得土地产权的希望,大大加快了土地的分化过程.然而,对于不同的"田面权"所有者来说,"田面权"的确定却有不一样的意义.不管是哪一类"田面权"所有者,其权利的实现都受到土地耕种者的牵制,这是因为"田面权"通过土地耕种而得来,也必须通过耕种来保障."田面权"的这种特性也大大增加了交易市场中的租佃纠纷.     

Preparation and Characterization of a Novel Hybrid Copolymer Hydrogel with Poly（ethylene glycol） Dimethacrylate, 2-Hydroxyethyl Methacrylate and Layered Double Hydroxides

This paper describes the fabrication, characterization and properties of a novel hybrid poly(ethylene glycol) (PEG) based hydrogel via in situ polymerization. The hybrid hydrogel was fabricated by free-radical redox polymerization using ammonium persulfate (APS) and N, N, N??, N??-tetramethylethylenediamine (TEMED) as initiators and N, N??-methylene bisacrylamide (BIS) as cross-linker at 60°C. To create a hybrid hydrogel, 0.2% (mass fraction) of MgAl layered double hydroxide (LDH) was added to the aqueous solution by ultrasonic dispersion. The physicochemical properties of hybrid hydrogel under vacuum freeze-drying processing were characterized by Fourier transform infrared (FTIR) spectroscopy, thermal gravimetric analysis (TGA) and scanning electron microscopy (SEM), while swelling kinetics and gel content were calculated. Swelling degree in distilled water varied from 94%?C125% with a gel mass fraction of 83%?C91%. SEM images showed that the micron pore size of hydrogel could be adjusted within the range of several micrometers by changing the cross-linker mass fraction from 2% to 10% (based on glycol). The results showed that the hybrid hydrogels exhibited excellent physicochemical behavior and might be a promising material for applications in tissue engineering and drug delivery.     

腐殖酸污染膜的超声波强化清洗

中水回用过程中制约超滤有效运行的关键是有机物污染问题.以腐殖酸污染的聚醚砜（PES）超滤膜为研究对象,利用超声波清洗方法,在不同的清洗环境中对污染的超滤膜进行强化恢复研究.结果表明,与传统化学清洗工艺相比,超声波清洗可以显著提高清洗效果,缩短清洗时间.当超声波传播方向与膜垂直时,利用超滤出水作为清洗介质,在37℃水温下,清洗效果较好,通量可恢复至93%.     

Morphology of Polyvinylidene Fluoride Based Gel Polymer Electrolytes

IntroductionDue to their potential application in lithium-ion secondary batteries[1] and other electrochemicaldevices[2 ] ,gel polymer electrolytes have attractedmuch interest in recent years.There were manykinds of polymeric materials being developed aspolymeric hosts for gelelectrolytes. Polyvinylidenefluoride( PVDF) is one of three kinds of matrixthat can be commercially applied[3 ,4] ,and the oth-ers are polyacrylonitrile ( PAN) and poly( methylmethacrylate) ( PMMA) .There were many r…     

PREPARATION OF HOLLOW LATEX PARTICLES BY ALKALI-ACID TREATMENT

IntroductionPolymer blends by emulsion polymerizationhave appeared as extremely important materialsand increased attraction for both academic and in-dustrial researchers.These blends rang from com-pletely homogeneous ones to phase- separatedones.Morphological configuration of these poly-mers is a key factor in determining the physicalproperties of the materials[1] . It is important forpreparation of polymer latex particles to controlthe polymer latex particle morphology.Polymer latex particle…     

STUDY ON ION-POLYMER INTERACTION AND MORPHOLOGIC STRUCTURE OF POLYURETHANE/SALT SYSTEMS

IntroductionRecently,many chemical and physical scien-tists have focused their investigations on solidpolymer electrolytes(SPE) because of their poten-tial applications in high technology fields,includ-ing high energy- density batteries,electrochromicdevices,chemical sensors,smart windows and soon.It is well known that,many factors,such aschemical structure,salt concentration,tempera-ture,morphologic structure,etc.,would have ef-fect on ionic conductive properties of SPE[1,2 ] .Inorder to ob…     

Effect of Gr Content and Hot Extrusion on Tensile Properties of （Nano-SiCp~-Gr）/Cu Composites Fabricated by Powder Metallurgy

Novel hybrid Cu matrix composites reinforced by graphite (Gr) particle with volume fraction of 5%?C15% and nano-SiC particle (nano-SiCp) with volume fraction of 3% have been prepared by powder metallurgy. The results show that Gr and nano-SiCp distribute uniformly in the Cu matrix. With increasing the volume fraction of Gr, the tensile strength of the composites decreases from 114 to 51MPa and the elastic modulus decreases from 75 to 60GPa. Compared with the sintered composites, the tensile properties including elastic modulus, tensile strength, yield strength and tensile elongation of the hot-extruded (nano-SiCp+Gr)/Cu composites are improved greatly due to higher relative density of the composites and more uniform distribution of Gr and nano-SiCp, in addition to finer grain size of the matrix as a result of dynamic recovery and recrystallization which occur during hot extrusion process.     

淀粉改性AM-DMDAAC阳离子絮凝剂制备工艺

在乙醇-水体系中用淀粉改性AM-DMDAAC阳离子絮凝剂,研究单体质量比、淀粉与单体质量比、引发剂用量和引发剂种类对聚合物性能的影响.结果表明AM∶DMDAAC=5∶1,AM∶淀粉=2∶1,引发剂质量分数为0.04%,引发剂为过硫酸钾和硝酸铈铵时能得到絮凝效果良好的絮凝剂.     

碳纤维结合体外预应力筋加固空心板梁的试验研究

随着桥梁加固技术的发展,各种加固技术已经日渐成熟,然而单靠一种加固方式进行桥梁加固已经不能满足现在工程的需求。利用粘贴碳纤维和张拉体外预应力筋复合加固的方式对空心板梁进行加固是一种综合、有效的加固方法。通过真型空心板梁试验,研究碳纤维和体外预应力筋两者相结合的加固机理,为复合加固技术的推广奠定了基础。     

玄武岩纤维（BFRP）筋与混凝土粘结性能试验研究

玄武岩纤维筋是一种新型的复合材料,具有强度高、耐腐蚀等特点,用它代替混凝土路面结构中的钢筋,可解决因雨水进入引起的连续配筋混凝土路面钢筋锈蚀问题。玄武岩纤维筋与混凝土的粘结性能,是影响其推广应用的关键技术之一。本文运用18个中心拉拔试件研究了不同螺纹表面玄武岩纤维筋与混凝土之间的粘结性能,试验结果表明：玄武岩纤维筋与混凝土试验粘结强度在11.592～23.578MPa之间,粘结强度随着玄武岩纤维筋表面螺纹深度与螺纹间距的变化而变化;有螺纹玄武岩纤维筋的粘结强度明显高于无螺纹玄武岩纤维筋,玄武岩纤维筋最佳螺纹间距约为筋直径长度的80%,最佳螺纹深度约为直径长度的10%;拉拔试件的破坏形态均为玄武岩纤维筋与混凝土接触面混凝土的剪切破坏而拔出。     

Effect of modified supplementary cementitious material on performance of mortar and concrete in marine environment

This study aims to explore the durability issues regarding chloride ion corrosion of concrete structures, and further investigates the modified supplementary cementitious material (MSCM) which acts as a significant enhancer of performance of mortar and concrete. The composition of MSCM includes mineral slag powder, fly ash and inhibitor. The microstructure, sulfate erosion resistance and electric flux of high-performance concrete are tested with MSCM, and the results show that the pore structure of concrete is improved significantly along with excellent electrochemical performance. It is observed that the substantiality of concrete after being mixed with 18% (mass fraction) MSCM is enhanced effectively. The sulfate resistance coefficient of concrete is found to be greater than 1.2, and the electric flux of concrete is less than 600C. These results have demonstrated that the MSCM possesses an excellent electrochemical performance and a wide applicative prospect in marine environment.