造纸污泥变废为宝

制浆造纸过程中产生大量的污泥,保守地估计我国造纸业每年约产生300万吨污泥,污泥被当成工业垃圾处理,不但增加了成本,而且还对环境有污染。经研究造纸污泥是一种很有价值的潜在资源,对其合理地加以利用是当前解决资源短缺和环境污染的有力措施之一。     

无机胶黏剂在陶瓷纤维纸中的应用

陶瓷纤维纸耐火性能良好,被广泛用作各种耐高温、隔热材料。本研究应用不同的工艺,探讨不同种类无机胶黏剂及其组合对陶瓷纤维纸强度和热力学特性的影响。     

海藻酸钠对可食性蔬菜纸质构的影响

该文研究了海藻酸钠、CMC—Na、琼脂3种增稠剂对胡萝卜纸的影响,经过复合三种增稠剂对胡萝卜的研制进行了探讨。通过正交试验得最佳配方为：胡萝卜100％,海藻酸钠0．8％,CMC—Na为0．5％,琼脂0．4％,甘油2．5％。     

晒图纸的"无氨显影"由毒害变安全的新趋势

该文重点叙述晒图纸的传统工艺——“无氨显影法”,目前出现了一种以安全环保型的显影制剂,取代对人体健康有害的有机胺显影的新趋势。文中对两种显影剂性能,进行了对比。显示了新“无氨显影”的技术进步。     

提高喷墨打印性能途径浅析

从几个方面探讨了影响喷墨打印性能的因素,并进行了分析;介绍了一种新型的改性淀粉,对其应用状况进行实验分析,对比后发现其具有较高的应用性。高性价比喷墨打印纸将得到广泛的发展与应用。     

生物强化技术在造纸废水处理中的应用

从生物强化技术、固定化微生物技术和环境生物制剂等方面,介绍了生物强化技术在制浆造纸废水中的应用现状,总结了制剂造纸废水生物强化技术的研究进展,并讨论了今后的研究方向。     

基于氯化钴改性的纤维素纸比色湿度传感器

为了获得兼具良好湿敏响应和颜色可视性的湿度传感器,以纤维素滤纸（FP）和氯化钴（CoCl₂）为原料,滤纸为传感器的基底材料,氯化钴为感湿材料和颜色指示剂,通过简单的浸泡-干燥的方法制得CoCl₂/FP复合膜。采用扫描电子显微镜（SEM）、傅里叶红外光谱仪（FTIR）、X射线衍射仪（XRD）对复合膜进行一系列物理化学性能测试。结果表明,CoCl₂/FP复合膜上均匀地分布着氯（Cl）元素和钴（Co）元素,且滤纸和氯化钴之间主要发生的是物理变化。采用电化学工作站和电脑配色仪对CoCl₂/FP比色湿度传感器进行电流响应测试和可见光光谱测试。结果表明,在相对湿度（RH）为11%~98%的范围内,CoCl₂/FP比色湿度传感器具有明显的电流响应,电流变化超过1000倍。另外,从低湿度到高湿度,CoCl₂/FP比色湿度传感器呈现出由蓝色到红色的颜色变化,且这种颜色变化是可逆的。     

浸渍纸预固化度影响因素的分析

从预固化度的定义入手,通过大量实际生产数据分析了影响浸渍纸预固化度的主要因素:胶粘剂、浸渍工艺、浸胶量和挥发份等.指出了预固化度与板材质量的关系以及控制这一指标的措施.     

瓦楞纸板性能改进

介绍了近年来国内外瓦楞纸板功能化的技术和功能化产品的功能性,指出商品保护与环境保护、保护性能与招徕效果相结合,并将销售和运输功能合二为一是未来瓦楞纸板的发展方向.     

Relationship between mechanisms and activities at the time of pedestrian injury and activity limitation among school adolescents in Kathmandu, Nepal

This study assessed the relationship between pedestrian activity at the time of injury, the type of vehicle involved and resulting activity limitation among school adolescents in the Kathmandu and Lalitpur districts of Nepal. A cross-sectional study of 1557 students in grades 6–8 across 14 schools was conducted using a self-administered questionnaire from August to September 2003. Twenty-three percent of adolescents reported pedestrian injuries, 38% were from urban and 21% from semi-urban areas. Adolescents were commonly injured by motorcycles and motor vehicles while crossing the road; however, while walking and playing, they were commonly injured by bicycles and motorcycles. Bicycles and motor vehicles were less likely to be involved in injury while crossing the roads and playing, respectively (p < 0.001). Activity was more likely to be limited for a longer period of time (>7 days) with injuries endured while crossing the road (p < 0.001). In urban areas, boys and girls were more likely to be injured while crossing the road and walking, respectively (p < 0.05), and both were commonly injured by motorcycles. In semi-urban areas, boys and girls were commonly injured while walking and were more likely to be injured by motorcycles and bicycles, respectively (p < 0.05). In both areas, more boys than girls were injured while playing. These findings have important implications for pedestrian safety interventions in poor countries.