项目法施工在工程中的应用

当前,施工企业要在激烈的市场竞争中求得生存发展,必须切实加强施工项目的科学管理,近年来,随着项目法施工的全面推行,很多施工企业都在加强施工项目科学管理上进行了积极有益的探索,我公司结合在克拉玛依油田施工的具体情况,在克拉玛依重油开发公司92^#站污水处理改造扩建工程中推行了项目法施工管理,作为有益的尝试。     

低品位磷矿生产高档化肥

用低品位、高杂质的磷矿生产磷酸二铵是安徽铜化集团六国化工公司的技术创新项目,该项目开发的宜昌磷矿石在大型磷铵装置中的应用技术为企业年创效益达750万元。     

LG化学获得USABC聚合物锂离子动力电池项目合同

据韩国媒体报道，韩国最大的化学公司LG化学公司8月23日宣布，公司已经与美国先进电池联合体(USABC)签署一份价值460万美元的开发用于复合动力车的先进锂离子聚合物式电池合同。根据协议，LG化学和CPI(LG化学在美国成立的电池系统研究协会)将联合执行该项目。该项目是开发用于复合动力车的高科技电池系统的两个阶段中的第一阶段。     

德赛化纤聚酯项目建成投产

<正>江苏德赛化纤公司一期高性能聚酯短纤维项目于近日建成投产。江苏德赛化纤公司是由中国纺织设计院、香港华运化工(中国)有限公司、香港明德企业有限公司、江苏凯威化工有限公司共同组建的大型合资企业,该项目总投资10亿元,     

德赛化纤聚酯项目建成投产

江苏德赛化纤公司一期高性能聚酯短纤维项目于近日建成投产,首批产品正式产出。江苏德赛化纤公司是由中国纺织设计院、香港华运化工(中国)有限公司、香港明德企业有限公司、江苏凯威化工有限公司共同组建的大型合资企业,该项目总投资     

昊华字航消光PVC树脂等项目通过企业研究开发鉴定

近日,昊华宇航公司实施的“消光PVC树脂”等3个项目顺利通过了焦作市科技局组织的2011年企业研究开发项目鉴定。     

突出创新 狠抓重点——上海华谊（集团）公司科技工作回顾与展望

2002年回顾 2002年上海华谊(集团)公司的科技工作,在公司一体化理念的指导下,发挥整体优势,集中优势力量,突出创新理念,狠抓一批重点项目的技术开发,通过广大干部和科技人员的共同努力,开发出了一批拥有自主知识产权并具备产业化前景的核心技术,为华谊经济发展提供了有力的技术支持。 2002年,华谊的科技工作无论是项目开发、成果转化,还是生     

从沙特项目执行看国外工程管理

随着经济全球化浪潮的不断高涨,国内工程建设企业不断走出国门,投入到国际工程建设中.近几年来,中国石化集团第二建设公司(以下简称二建公司)积极实施"走出去"战略,加大国外石化建设市场的开发力度,取得了一定成效,已先后承接了5个项目,项目执行取得了较好效果.笔者直接参与了这些项目的建设,就这些项目的执行情况,谈谈对国外工程管理的感受.     

普利司通启动研究项目开发天然橡胶的可持续来源

普利司通公司(BSJ)于2012年3月10日宣布,计划在美国开展广泛研究项目,致力于开发银胶菊,使其成为高品质天然橡胶的可再生资源,替代橡胶树。银胶菊是一种多年生灌木,原产于美国西南     

英、美公司将联合开发可降解塑料

英国石油公司(BP)日前对外宣称，该公司的烯烃及衍生产品部将与美国Metabolix公司合作进行一项为期两年的联合开发项目。所开发的产品将是可再生和可生物降解的塑料。     

Extraction into a flow of a fluid with a velocity gradient

Unsteady extraction from a system of semi-infinite capillaries to the flow of a fluid with a linear velocity gradient is studied. An assumption that the diffusion in the flow is a quasi-steady-state process is taken to obtain a linear equation for the local mass flux from the pore space, which involves fractional derivatives with respect to time and flow coordinate. Limiting solutions for the total diffusion flux at small and large times that cover the entire time interval are found.     

Electrolytes: From a Thorn Comes a Rose,and from a Rose,a Thorn

In this article we take a stroll through the metaphorical rose garden, part of the flower garden, that is electrochemical storage systems. We take a closer look at batteries as the center‐pieces – the roses – and especially at the system component of batteries, the electrolyte and its development, throughout history. Just as a rose can only develop its unique beauty when taken good care of and provided with clean water and suitable nutrients, a battery cell cannot function without its electrolyte; the seemingly trivial component that has to juggle a multitude of requirements in order to make batteries truly bloom.     

Mesomorphic transitions in a mixture of a flexible and a semi-rigid polymer

Phase studies on a mixture of two polymers are presented, one of which is mesomorphic. We have systematically examined the influence of the molecular weight of the flexible polymer (including the oligomers) and of the semi-flexible polymer. In addition to the effect of the molecular weight, specific interactions are important for compatibility and formation of a homogeneous mesomorphic phase. The nature of this phase is demonstrated to be cholesteric and the pitch is determined.     

Propagation of a burning front over a condensed material from a focus

Measured propagation speeds are given for the combustion front in a blind gap in a condensed substance, which are related to gap height and mean pressure. The front may propagate monotonically, which is characteristic of relatively high pressures and wide gaps, or as a result of additional burning foci arising at a certain distance from the main front. At low pressures and particularly with small gap heights, the front propagates in an unstable fashion over the surface.Moscow. Translated from Fizika Goreniya i Vzryva, Vol. 28, No. 4, pp. 49–53, July–August, 1992.     

When is a Beam a Plate?

Formulas associated with simple beam or plate theories are used extensively in structural design, to determine You's modulus, and to determine fracture strength of brittle nonmetallic materials. The question may arise as to whether the proper ratio of beam-width-to-beam-depth is such that the bent structural element can be considered as a beam and, if not, what is the correction factor that should be used with the simple beam formula. These questions are answered for a range of structural metallic and brittle nonmetallic materials.     

Detonation of a Column of a Chemically Active Bubbly Medium in a Liquid

The problem of a detonation wave propagating in a cylindrical column of a chemically active bubbly medium screened by a liquid from the tube walls is formulated and numerically solved within the framework of the Iordanskii–Kogarko two-phase model with allowance for energy dissipation due to acoustic radiation of bubbles. The wave structure of the reaction zone and the detonation velocity of the bubbly medium column are calculated. It is found that the self-sustaining wave can propagate with a velocity greater than the velocity of one-dimensional bubble detonation by a factor of 1.5–2.5.     

Laminar flow deformation of a droplet adhering to a wall in a channel

We study the deformation of oil droplets of varying viscosity adhering to a solid, rigid wall in a rectangular channel induced by a pressure-driven, laminar flow of water. Our experimental investigation involves the systematic study of the effects of initial droplet volume, flow rate and viscosity ratio on the various modes of droplet motion and deformation; this is performed via direct visualisation of the flow in a glass cell using a high-speed camera. Our results are used to construct flow maps that delineate the critical conditions for droplet ‘sliding’, ‘crawling’ and detachment from the channel wall as a function of system parameters. Comparisons of our experimental results with numerical predictions obtained using a procedure based on the diffuse-interface method yield reasonably good agreement for certain flow regimes.