加热炉内衬故障及修复措施研究

本文从加热炉日常运行出现的问题出发,分析了影响加热炉衬里损坏的原因,制定解决问题措施,解决了加热炉长周期运行瓶颈。     

碳纤维布在某改造工程预制楼板加固中的应用

碳纤维加固是一项新兴技术,文章详细介绍了该技术在某改造工程中的应用。利用碳纤维布对预制楼板进行加固,存在荷载增加、预应力钢筋被打断等不利因素,但预制楼板能够满足承载力要求。这一突出优点使碳纤维布加固混凝土结构可以替代粘钢技术在建筑物、桥梁加固工程中推广,其应用前景良好。     

病房大楼结构加固技术

文章对某住院部的结构体系和健康状况进行了分析,并介绍了利用钢结构增设构造柱与圈梁、碳纤维布加固梁板等加固技术在该结构加固项目中的方案设计及施工技术与工艺。大楼加固质量验收表明该大楼加固效果达到设计要求,为加固技术的进一步发展提供了参考。     

纤维风积沙土归一化特性分析

基于纤维风积沙土的不固结不排水三轴剪切试验,为实现应变硬化型纤维风积沙土应力—应变关系的归一化,基于应变硬化型典型的双曲线特征,提出了以固结围压作为归一化因子。通过以固结围压为归一化因子,对纤维风积沙土应力—应变特性进行归一化分析和比较表明,纤维风积沙土的应力-应变特性归一化程度更高,效果更好。同时,建立了应变硬化型纤维风积沙土应力—应变特性的归一化方程。     

采用豆渣研制可食用包装纸

以价格低廉的豆渣为原料,生物蛋白酶、脂肪酶为催化剂,提取豆渣中的膳食纤维,制成新型可食性包装。通过分析加酶量、酶作用时间、温度、pH值、塑化剂和糊精的用量等因素的影响,确定其最佳工艺为：蛋白酶用量4%、反应时间7小时、温度40℃、pH值7、塑化剂用量为1.5%、糊精加入浓度为2%。     

马铃薯的营养价值及开发利用前景

介绍了马铃薯的营养及保健功能和较高的开发与利用价值,并对近年来新研究的几种马铃薯食品的工艺作了详细概述,分析了中国与国外马铃薯制品的差距,指出了中国马铃薯的开发应用领域,尤其是马铃薯食品、变性淀粉及其他淀粉衍生物产品等制品的应用,具有广阔的市场前景,应加速开发,以促进地区的经济发展。     

Consumer willingness to pay for sustainable apparel: the influence of labelling for fibre origin and production methods

This study of value‐based labelling for apparel products examined consumer willingness to pay (WTP) for three credence attributes of fibre: origin, type and production method. Experimental auctions were conducted with student subjects in Texas and used socks made from cotton and polylactic acid (PLA), a fibre manufactured from corn. The bid results of two rounds were compared. The first round was conducted without information about the credence attributes of the socks. The second round included varying levels of three types of attributes: fibre origin (imported, US and Texas), fibre type (cotton and corn) and production method [conventional, organic and non‐genetically modified (GM)]. Tobit regression analysis was performed using the attributes and subject demographics to determine consumer WTP for the various attribute levels and to profile consumers with interest in the attributes. In terms of origin, results show that participants were willing to pay a premium for socks with fibres produced in Texas, but not for those produced in the US. Fibre type mattered, with participants requiring a discount once they learned that socks were made with PLA fibre. The greatest premium ($1.86) was placed on socks labelled as organic, slightly more than the premium for socks labelled as non‐GM. The results also indicate that women were less willing to pay for US fibres than men, and Hispanics were less willing to pay for organic or non‐GM fibre production. A key finding of this study is that consumers value information about the local origin of fibres. The premium for organic fibres is not unexpected, given the success of the organic apparel market, but the premium on non‐GM fibres suggests that sustainable production systems that are not organic may be successful if they emphasize other attributes such as local or non‐GM.     

聚丙烯纤维网混凝土动力学性能试验研究

本文通过测定聚丙烯纤维网混凝土的抗击性和疲劳特性,对聚丙烯纤维网混凝土的动力学性能分析。结果表明聚丙烯纤维网掺入对提高混凝土抗折强度有显著作用,尤为突出的是其弯曲疲劳性能和冲击韧性大幅提高。     

洪河自然保护区芦苇沼泽植物的多样性

洪河自然保护区芦苇沼泽集中分布在河漫滩、湖滩和低洼地上．地表常年积水．水体流动．土壤为腐泥沼泽土。常见植物４７种．隶属于２２科３４属。组成植物门类齐全．复杂多样。该群系可分成芦苇沼泽和芦苇─小叶章沼泽两个类型。     

关于CNG金属内胆纤维环缠绕气瓶检验的几点思考

文章针对车用缠绕气瓶定期检验标准GB24162—2009颁布后,在检验中出现的问题进行了探讨。对出租车等特殊车辆用缠绕气瓶确定使用年限提出建议;纠正了对缠绕层老化应修复的观点;提出了老化检验与判定尺度;探讨了检验周期、进口气瓶、气瓶移装等问题,并补充了标准中未定义的常见缺陷。