Activated Carbon Fabric Mask Reduces Lead Absorption and Improves the Heme Biosynthesis and Hematological Parameters of Battery Manufacturing Workers

Activated carbon fabrics (ACF) mask prevents the absorption of lead and reduce its adverse effects of human health. Aim of this study to know the blood lead level and its effects on heme biosynthesis and hematological parameters after using 2 months activated carbon fabric mask of battery manufacturing workers (BMW). Blood lead level, heme biosynthesis and hematological parameters were measured by using standard method. Blood lead level (P < 0.001, − 13.5%) was significantly decreased, activated δ-aminolevulinic acid dehydratase (P < 0.001, 11.97%) and non-activated δ- aminolevulinic acid dehydratase (P < 0.001, 23.17%) enzyme activity were significantly increased, however, the ratio of activated to Non-activated δ- ALAD (P < 0.001, − 10.13%) was significantly decreased, urinary excretion of δ- aminolevulinic acid (P < 0.001, − 10.49%) and porphobilinogen (P < 0.001, − 7.38%) were significantly decreased after using 2 months ACF mask as compared to before using mask of BMW. Hematological parameters i.e Hb (P < 0.05, 13.42%), PCV (P < 0.05, 7.23%), MCV (P < 0.05, 1.9%) were significantly increased and total WBC count (P < 0.05, − 5.18%) was significantly decreased after using 2 months ACF mask as compared to before using mask of BMW. Two months using ACF mask reduces the blood lead level and improves the δ-ALDH activity and hematological parameters, decreases the urinary excretion of δ-ALA, PBG of battery manufacturing workers. Therefore, the regular using of ACF mask is beneficial to prevent the lead absorption and its adverse effects on human health.     

巧用Flash 移动遮罩技术制作特效动画

利用Flash遮罩特效制作了一个探照灯动画。先创建一个文本图层,然后建立动画,最后建立背景并且修改完成。重点介绍遮罩特效的原理及遮罩层使用、创作,其可扩展应用于制作各种镂空图形效果动画。     

某型飞机翼身整流罩Ω型加筋壁板选型的结构设计研究

从选材、铺层、结构优化、强度校核和工艺等方面叙述了某型飞机翼身整流罩的两种Ω型加筋壁板结构方案选型的设计研究。研究结果确定了其中一种方案为首选方案。     

人格面具在角色压力中的解释作用

人格面具是荣格所提出的四种原型之一,角色压力是目前压力领域研究的重点之一,在此文中将两者结合,使用人格面具原型解释个人角色压力的形成及缓解之道。将分析心理学与角色理论结合解释个人压力,目的使得个体可以在压力面前有自己的解释力和缓解之法。     

因特网可扩展性分析与研究

随着因特网的迅猛发展,Ipv4地址空间已经接近枯竭,因特网可扩展性受到了极大的挑战.采用划分子网、网络地址转换(NAT)、无类域间路由协议(Cider)等提高因特网可扩展性的技术,从减少主干路由表项目数和提高IP地址利用率两个角度,给出了提高因特网可扩展性的解决方案.     

如何制作多层次、交互性的课件

为了增强学生的学习兴趣和主动参与精神,我们可以运用PowerPoint做出多层次和交互性强的课件,提高教学效率。于此,阐述了课件的设计思路,以实例介绍了如何运用PowerPoint制作多层次、交互性强的课件,并对该课件进行评析。     

政府网站综合评价方法

本文使用层次分析法对网站建设指标进行了分析，建立一个网站评价体系，对政府网站的基本功能进行评价，从理论上对政府网站建设提出建议。     

混沌信号对通信系统攻击方法的研究

设想把混沌理论应用到电子对抗中,提出混沌信号干扰攻击敌方通信系统思想方法,提出混沌屏蔽攻击方法.混沌屏蔽攻击的物理机制是:强混沌信号可以直接屏蔽信息信号,小混沌信号可以扰乱信息信号.还发现联合混沌信号和噪声信号其攻击效果确能增加了通信系统的解调难度.