A study of one‐bath alkali–amine hydrolysis and silk‐fibroin finishing of polyester microfiber crepe fabric

In this study, the synergistic aminolysis (sodium hydroxide and ethylene diamine in one bath) mechanism of polyethylene terephthalate (PET) microfiber crepe fabric was preliminarily investigated. The results showed that not only active groups (i.e., ? NHR, ? COOH, and ? OH) but also considerable cracks and craters were introduced onto PET fibers, which provided locations for a subsequent crosslinking reaction and mechanical attachment and so facilitated the silk‐fibroin finishing. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 1467–1473, 2001     

Graphic Manifestation of the Ability of Selected Alkaline Earth Chlorides to Impart Flame-Retardancy to Cotton Fabric

Optimum percent quanties of selected alkaline earth chlorides used for imparting flame-retardancy to cotton fabric have been chosen from one of the author's ACS-presented articles. Based on the afore mentioned data and gathering information concerning their physicochemical specifications from scientific literature the related graphical representations were obtained. The results illustrate a reasonable dependence in lowering the ability of the alkaline earth chlorides on their higher stabilities that is, the optimum percent of the applied chlorides decreased according to the metals position in the periodic table. Therefore a better understanding has been achieved and deduced.     

Rural industrialization and environmental disamenities: the case of the Bendel cement company,Okpella Bendel state (Nigeria)

This paper attempts a comparative analysis of the economic and non‐economic damage of rural industrialization to the environment of a poor community in a developing country. The major finding is that rural industrialization is more directly and strongly associated with environmental disamenities than with economic loss. A policy implication of this is that the package of rural industrialization strategy in developing nations must transcend conventional compensation schemes. The package must include programmes to provide for alternative sources of water, say, and an adequate health care delivery, where the disamenities caused are in the forms of polluting natural sources of water supply and/or increasing health hazards.     

Characterisation of the S-Carboxymethyl Extract of Wool Using Small Format Alkaline Urea-PAGE/SDS-PAGE Followed by Silver Staining

Abstract

Alkaline urea-PAGE/SDS-PAGE, when used in a novel format which was significantly smaller than that employed by earlier workers, and when followed by silver staining, resulted in the detection of excellently resolved protein components from S-carboxymethyl reductive extracts of very small wool samples, even samples as small as an individual wool fibre. The silver stained two-dimensional gel patterns exhibited significant improvements compared to the fluorograph gel patterns of earlier workers based on the presence of radiolabel incorporated within the S-carboxymethyl moiety. The silver staining resulted in the visualisation of numerous protein components, and in the region of the gel pattern expected to contain the high-sulfur protein fraction, there appeared more major components than the number of high-sulfur protein components usually displayed in fluorograph patterns. The relative amount of the high-sulfur protein fraction in the final silver stained gel pattern could be boosted, if desired, if the gel was loaded not with the whole wool extract but with the filtrate resulting from the passage of the whole extract through a centrifugal ultrafilter.     

Experimental study on the external electrical thermal and dynamic power characteristics of alkaline water electrolyzer

As hydrogen production with a water electrolyzer is an effective way for renewable energy consumption, understanding the external electrical characteristics of water electrolyzer is of great significance for the modeling and simulation, system configuration, and control strategy of the system for hydrogen production by renewable energy. However, there are relatively fewer studies in this area. This paper presents the establishment of an experimental platform to conduct an experimental study on the static and dynamic voltage‐current characteristics and analyze the adjustability of the electric power of the traditional alkaline water electrolyzer, the relationship between the electrical characteristics and the electrolyte temperature, and operating point of the alkaline water electrolyzer. In addition, the mathematical fitting problem of the electrical characteristics of the alkaline water electrolyzer is discussed. The work could supply a reference to alkaline water electrolyzer intergrated application in renewable energy.     

硝酸铍硝酸淋洗液离子色谱法测定碱土金属离子

本文提出一种新颖的用于碱土金属离子色谱法测定的淋洗液——硝酸铍—硝酸溶液。该淋洗液与抑制电导检测方式相结合具有使分离效果好、检测灵敏度高和抑制柱容易再生的优点,是目前碱土金属离子色谱法较为理想的淋洗液。     

超声波照射下废新闻纸脱墨

本文研究了废新闻纸在超声波照射下脱墨时浆浓、时间、pH 值对脱墨浆洁净度的影响,得出了最佳值:温度为55-60℃,pH 为5.7。实验采用 CIE 1976(2ab)表色系统并结合湿氧化碳含量测定法研究了超声波、化学、机械三种方法所得浆料的洁净度及脱墨效率。通过比较得出,超声波脱墨效率高,所得浆料光学性能好,洁净度高。光学显微镜观察和碳含量测定结果表明:超声波脱墨浆中碳含量较化学、机械脱墨浆的少。并且超声波脱墨浆手抄片的裂断长比化学脱墨浆的高7.0%,耐破度高26.6%,保水值高23.5%。利用红外光谱研究油墨粘结剂的一些成份在超声波处理前后变化时发现,仅超声波处理不会使之发生皂化反应,也不会产生新的可皂化基团。此外,废新闻纸贮存时间对超声波脱墨效率影响不大。     

盐碱地种植水稻的水利措施

根据江东灌区盐碱地种植水稻成功经验，针对影响水稻生长和产量的不利因素，提出盐碱地种植水稻的水利工程措施、灌水技术措施，使水稻获得高产。     

废纸碎解过程中的设备因素对纤维形态的影响

碎解时间是影响再生浆白度的主要因素，其它条件如温度、浆浓、转子转速和碎解浆贮存时间对再生浆的白度也有一定影响，但影响不是很大。因此，控制合适的碎解时间是至关重要的。在脱墨浆适宜的工艺条件下，使用纤维质量分析仪FQA测量了不同碎解时间(0s、5s、10s、15s、20s)下的纤维形态参数，并结合电导率、Zeta电位、表面张力、浊度等参数，通过白度评价了二次纤维脱墨的效果，结果表明进口旧新闻纸的最佳碎解时间为15s。