提高轻苯收率的措施及解决办法

本文根据宣钢焦化厂的实际情况,通过工艺改造和操作优化的手段,解决了轻苯收率低的问题,希望其中的方法能给同行以借鉴。

因特网接入网等使用的缩略语(四)

CC(Call Control)呼叫控制 CC(Coutry Code)国家码 CC(Command Center)指挥中心 CCAMP(Common Control And Measurement Plant)公共控制和测量平面 CCC(Command Control Center)指挥控制中心 CCC(Communications Control Control Center)通信控制中心 CCCH(Common Control Channel)公共控制信道 CCF(Call Control Funcotion)

轻苯收率低的原因及解决办法

本文根据宣钢焦化厂实际情况,通过工艺改造和操作优化手段,解决轻苯收率低的问题,希望其中的方法能给同行以借鉴。

Pseudo-Dynamic Testing for Seismic Performance Assessment of Buildings with Seismic Isolation System Using Scrap Tire Rubber Pad Isolators

Investigation of seismic performance of buildings with STRP （scrap tire rubber pad） seismic isolators by means of pseudo-dynamic tests and numerical simulation is presented. The isolated building is numerically modeled, while the base isolation layer is considered as the experimental substructure in the pseudo-dynamic tests. The test result verifies that the STRP isolator shows acceptable shear deformation performance predicted by the design methods, and demonstrated that seismic isolation using STRP works as a protective measure to provide enhanced seismic performance of the building indicated by the reduction of top floor absolute acceleration, drift and base shear as designated.

Calibration of Pipe Roughness Coefficient Based on Manning Formula and Genetic Algorithm

This paper presents a method to calibrate pipe roughness coefficient (i.e., Manning n-factor) with genetic algorithm (GA) under multiple loading conditions. Due to the old pipe age as well as deleting valves and blends in the skeleton of distribution network, most of the pipes in hydraulic model of practical water distribution system (WDS) are rough. The commonly used Hazen-Williams C-factor is therefore replaced by Manning n-factor in calibrating WDS hydraulic model. Adjustment to GA is designed, and the program efficiency is improved. A case study shows that the adjustment can save 60% of the total runtime. About 90% of the relative differences between simulated and observed pressures at monitoring locations are lower than 3%, which suggests that the proposed adjustment to the calibration is efficient and effective.

Systematic Analysis of Carbon Dioxide Activation of Waste Tire by Factorial Design

In this study, waste tire was used as raw material for the production of activated carbons through pyrolysis. ＇Fire char was first produced by carbomzation at 550℃ under nitrogen. A two tactortal design was used to optimize the production of activated carbon from tire char. The effects of several factors controlling the activation process, such as temperature （.830-930℃）, time （2-6h） and percentage ot carbon dioxide （70%-100%） were investigated. The production was described mathematically as a function of these three factors. First order modeling equations were developed for surface area, yield and mesopore volume. It was concluded that the yield, BET surface area and mesopore volume of activated carbon were most sensitive to activation temperature and time while percentage of carbon dioxide in the activation gas was a less significant factor.

民初粤皖系政争述论

袁世凯统治时期,以梁士诒、周自齐、叶恭绰为代表的旧交通系(粤系),与周学熙、杨士琦、孙多森为代表的皖系政争十分激烈。二者之间的政争一方面表现为争权夺利,特别是争夺财政、交通事权的派系之争;另一方面,也反映出双方在财政、金融等政策制定中的矛盾。粤、皖系政争为袁世凯、太子党借机推行洪宪帝制提供了大好机会,加剧了北洋集团内部的矛盾与危机,是北洋集团由盛而衰的一个重要原因。

民族主义旗号下的多方政争：华盛顿会议期间的国民外交运动

华盛顿会议期间的国民外交运动是一场复杂的民族运动,大体有四种政治力量参与其间,即北京政府、广州政府、"在野派系"和精英团体。在野派系借助国民外交运动之名,暗行"倒阁运动"之实。在内政与外交"实已打成一片"的时代语境下,全国国民外交大会自然沦为政争的工具,这不仅是南北之争的结果,更是北方派系斗争的产物。虽同属"政争",但南北之争有为主义而争的"新旧之别",而北方派系之争和府院之争"形似政争",所争者实非政治问题,而是利益之争。这场民族运动有两个政治目标:外争主权,内求统一。南北双方的民族主义立场没有本质差异,但在政权问题上,彼此都想统一对方,因而在政治竞争中有意识地运用民族主义。

认识一下黎亚

黎亚一头短发,1米67的个头,一脸的灵气和美丽之气,非常迷人。几年前,黎亚就在广州歌坛十分活跃,曾经灌录过50多个专辑盒带,她是推出个人专辑《天堂鸟的女子》之后就悄无声息了。许多人都为黎亚的沉寂表示关心,黎亚干什么去了,她在哪里?当黎亚再次露面之后告诉记者:“我在录新专辑,一直很忙。”新专辑做得比以前那个更加精致。这两年为录带子跑了很多地方,新加坡、台湾……还在台湾出了20集怀旧系列金曲集,没停过。 与三年前比较,黎亚更成熟了,她更具有女人的味道,也更象明星。黎亚在台湾很受歌迷的喜爱,她一出现在台湾,就成为媒体的焦点。