面向对象的程序设计语言CLUSTER86的设计与实现

本文介绍了笔者设计并实现的一种新型的面向对象的程序设计语言,着重讨论了在设计过程中采用的新的概念,并和其它类似语言作了比较.     

甲醇与碳酸二甲酯共沸液的分离研究进展

综述了DMC-CH_3OH二元共沸液的各种分离方法。讨论了共沸精馏和萃取精馏的工艺流程。     

浅谈监理工程师如何抓好施工阶段的投资控制

在多年工程实践的基础上研究、分析了施工阶段投资控制的方法问题。     

提高破碎系统中细碎产品性能的研究

本文从矿石破碎系统论述了改造中细碎提高了产品质量和产量的措施。采用层压破碎原理，吸收国外圆锥破碎机破碎腔形的特点进行改造。     

MWCNTs reinforced conductive,self-healing polyvinyl alcohol/carboxymethyl chitosan/oxidized sodium alginate hydrogel as the strain sensor

The preparation and application of hydrogel has been a hot research field in recent years. Here in, a composite hydrogel based on poly(vinyl alcohol) (PVA), carboxymethyl chitosan (CMCS), oxidized sodium alginate (OSA), and oxidized multiwall carbon nanotubes (OMWCNTs) was successfully prepared. Hydrogen and imine bonds of the hydrogel endowed the composite hydrogel with self-healing property and pH sensitivity. The fracture strength of the hydrogel was enhanced to about 0.8 MPa with the help of OMWCNTs, which was about 2.5 times compared with the one without OMWCNTs. Meanwhile, a new conductive network inside the hydrogel was constructed by OMWCNTs, which improved the conductivity of the hydrogel from 1.75 × 10⁻⁴ to 7.02 × 10⁻⁴ S/cm. The sensing test of the hydrogel showed that it could produce profound feedback signals for the deformation caused by external force and response to human body movements, such as finger bending, swallowing, and speaking.     

一种用于冲床的压力测试系统设计

冲床的输出主要依靠设定平衡器来实现,为了克服传统冲床调试过程中主要依赖技术人员进行理论值估算或者经验进行调节平衡器的输出而存在估算误差大的弊端和局限性,设计了一种用于冲床调试的高精度压力测试系统方案;系统中自行设计了由轮辐式应变片来构成的压力传感器,该压力传感器的结构设计可有效消除环境温度等对系统的影响,采用STM32F051芯片为核心构成压力测试数据的处理模块;该压力测试系统的压力测试范围为0～2 000 kg,阈值可以灵活设定,测试系统的线性度约为1.3％,分辨率为1 kg,标称误差可达0.1％;该压力测试系统经实际测试表明:具有成本低、性能稳定,抗干扰能力强等优点,可用于各类低速冲床的压力数据采集和处理.     

网络综合布线介质的主流--光纤

通过对光纤和铜缆在网络应用中的特性分析，光缆和铜缆的优缺点比较，认为光缆有着很多铜缆不可相比的优势，如抗电磁干扰、传输距离大、带宽扩充性好等，今后随着网络通信对带宽要求的不断提高和光纤技术的不断发展，光纤必将取代铜缆而成为网络综合布线的主流介质。     

The Temperature Intelligence Control System Based on Single Chip-Microprocessor

The paper introduces a temperature control system based on AT89C51 single-chip-microprocessor, and discusses the principle , hardware structure, and software design of this system in detail.     

抽水试验确定各向异性含水层参数的实例讨论

在进行抽水试验时,多将含水层看作为均质各向同性的,而事实上也有可能是各向异性的含水层,从而得到的含水层参数值不真实。该文分别以描述均质各向同性与各向异性情况下的非稳定流问题的解析解为基础,在满足直线图解法适用条件的情况下,分析了3组实际抽水试验数据,计算了两种情况下的含水层参数。经讨论表明:1)如果将各向异性情况下的含水层按各向同性处理,由各个观测孔s-t数据得到的弹性释水系数数值间会有较大的差别,据此提出了判断含水层是否为各向异性的初步方法;2)在利用直线图解法时,应当进行后检验,检查是否满足其适用条件。     

Phenol degradation by isolated bacterial strains: kinetics study and application in coking wastewater treatment

BACKGROUND: In biological treatment of coking wastewater, phenol may decrease the treatment efficiency because of its high concentration and toxicity to microorganisms. Bioaugmentation has been regarded as a good improvement of the traditional biological treatment using isolated degrading strains. In this study, two phenol degrading strains, Pseudomonas sp. PCT01 and PTS02, were isolated and investigated for degradation ability and application to real coking wastewater treatment. RESULTS: Complete phenol degradation was achieved after 18 h inoculation in medium containing 229‐461 mg L^?1 of phenol for both strains. The presence of phenol, pyridine and other compounds in mixed substrate or in coking wastewater prolonged the degradation to 20‐32 h with an initial phenol concentration of 160‐280 mg L^?1. The study of degradation kinetics yielded a two‐stage model to describe the effect of the initial phenol concentration and inhibitory compounds on phenol degradation. The highest degradation rate constant of the second stage, 1.25 h^?1 for PCT01 and 0.75 h^?1 for PTS02, was obtained at low phenol concentration in a single substrate. CONCLUSION: It was found that both strains could degrade phenol effectively and maintain their phenol degradation ability in coking wastewater, and therefore could be used for bioaugmentation treatment of coking wastewater. Copyright © 2011 Society of Chemical Industry