压实度连续检测系统信号处理的探讨

提出了振动压路机压实度连续检测系统的工作原理，据此开发出了检测仪器，并通过试验结果验证了基本理论的正确，随后，分析了其信号处理的优缺点，通过对振动压路机工况的分析，提出了基波加二次谐波标定、选择加速度信号为零时的变化率标定两种方案，以此提高系统的分辨率，在此基础上，通过信息反馈，控制振动压路机两个偏心轴的相对位置，可将压实度连续检测系统发展为振动压实智能控制系统。     

企业文化重塑与我国先进文化的前进方向——兼议多元文化冲击下的企业文化建设

企业文化和企业物质力量结合的深度决定了企业长期业绩增长和企业长远发展的潜力。在社会转型、全球化、信息化和现代化的内外环境的规压下，我国的企业要从多元文化的冲突与碰撞和传统文化的迷失中走出来，塑造一种全新的与我国先进文化的前进方向一致以及与现代经济、管理发展趋势相适应的企业文化，以此促进我国企业茁壮成长。     

Structural Damage Law of Semiconductor Bridge Detonator under Impact and Overload Environment

Aiming to know the requirement of penetrating the munition semiconductor bridge detonator under the impact overload environment, the impact overload simulation device and the structural finite element software ANSYS/AUTODYN are used to study the variation of the axial dimension, charge and the chip gap of the semiconductor bridge detonator under the impact overload environment. The typical semiconductor bridge detonator is affected by the acceleration, and the strain increases with the increase ...     

Life cycle inventory analysis of CO_2 and SO_2 emission of imperial smelting process for Pb-Zn smelter

1　INTRODUCTIONImperialSmeltingProcess (ISP) ,isaprocessavailableforproductionofzincandlead .Atpresent,about 13operatingISPsmeltersproduceabout 13%ofglobalzincandlead[1] .ButISPisasignificantcontributortoindustrialgreenhouseandacidityemis sionsduetoitshighenergyconsumption .Althoughcellemissionshavebeenreducedconsiderablyinre centyears ,thegrowingglobalconcernonenviron mentalissuesisimposingpressureontherelatedcom paniestoreducetheiremissions .Becauseofthelargenumberoffeedstreams ,by…     

Solidification of Municipal Solid Waste Incineration Fly Ash with Cement and Its Leaching Behaviors of Heavy Metals

The solidifying qffect of cement addition on municipal solid waste incineration fly ash ( MSWFA for short, collected from the gas exhaust system of MSW incinerator), the interaction of MSWFA with cement and water and the leaching of heavy metals from cement-solidified MSWFA are investigated. The main results show that : ( 1 ) when MSWFA is mixed with cement and water, 112 evolution, the formation and volume expansion of AFt will take place, the volume expansion can be reduced by ground rice husk ash addition ; (2) heavy metals do leach from cement-solidified MSWFA and at lower pH more leaching will occur; (3) compared with cement - so-lidified fly ash, the leachate of solidified MSWFA is with higher heavy metal contents ; (4) with the increment of cement addition leached heavy metals are decreased ; and (5) concentrations of Zn , Mn , Cu and Cd in all the leachates can meet the relevant Standards of Japan, but as the regulations for soil and groundwater protection of Japan are concerned, precautions against the leaching of Pb , Cl^- and Cr^6 and so on are needed.     

Preparation and Properties of Friction Materials by Using Two Kinds of Fibrous Industrial Minerals

1　IntroductionAsknown ,thefrictionmaterialisatypeofcompos iteswhosefrictionalcoefficientisconcerned .Thecompos iteconsistsofthreeparts :matrixmaterial,reinforcingmaterial ,andadjustingagent.Asbestosistraditionallyusedasareinforcingmaterial ,butasbestos basedfric tionalmaterialhaslargeheat fade ,whichcannotmeetthedemandforbrakingathightemperature .Inaddition ,as bestosmayinducecancer[1] .Asboththeenvironment pro tectionandthebrakingefficiencyareconsidered ,thetra ditionalasbestosfrictionalmat…     

Life cycle inventory analysis of CO2 and SO2 emission of imperial smelting process for Pb-Zn smelter

Based on the principle of life cycle assessment, CO₂ and SO₂ emission of Imperial Smelting Process in a certain zinc-lead smelter was analyzed by life cycle inventory method. According to the system expansion and substitution method, the environmental impacts of co-products were allocated among the main products of zinc, lead and sulfuric acid. The related impacts were assessed by use of Global Warming Potential (GWP) and Acidification Potential (ACP). The results show that the GWP index from 1998 to 2000 is 11.53, 11.65, 10.93 tCO₂-eq/tZn respectively, the ACP index decreases from 14.88 kgSO₂-eq/tZn in 1998 to 10.99 kgSO₂-eq/tZn in 2000. Power and electricity generation, followed by smelting and zinc distillation, are mainly responsible for GWP. Sintering individually affects ACP. Reduction in greenhouse gas emissions of the ISP may come from energy conservation measures rather than from technological developments. And recycling more secondary Pb and Zn materials effectively treated by ISP, and reducing the amount of primary metal are the main ways to put SO₂ emission under control. Biography of the first author: LI Qi-hou, postdoctor, born in Aug. 1972, majoring in ecodesign and the structure and morphology control of powders.     

Q345钢在低温下的力学性能研究

船用集装箱锁具中的锁轴原为 4 5钢 ,在低温 ( - 2 0℃ )下其性能尤其是冲击值达不到用户 2 7J的要求 ,航行时容易产生脆断。选用Q345钢 ,通过采用适当的锻造工艺和热处理工艺 (正火处理 ) ,锁轴拉伸、冲击性能在低温下使用有了很大的改善 ,延长了使用寿命 ,满足了用户的要求。     

重锤夯实法在工程施工中的应用初探

介绍了重锤夯实法的施工过程和施工中容易出现的问题及防治措施。     

工业生产过程中的泡沫及消泡技术

探讨了工业生产过程中泡沫的发生原因、消泡机理、消泡剂类型及消泡剂制备方法