Abstract People in many countries are now infected with COVID-19. By now, it is clear that the number of people much greater than reported cases. To estimate but undetected/unreported cases using a mathematical model, we can use parameter called probability quarantining an individual. This exists time-delayed SEIQR model (Scientific Reports, article number: 3505). Here, two limiting network suc...

Effect of lateral actions evolving from restrained thermal expansions horizontal structural elements (beams, slabs) on stability vertical (columns, walls) fire-engulfed buildings remains unaddressed sometimes in engineering practice. Discussion with engineers has revealed that two reasons may contribute most to such design inconsistency. The first is premature assumptions the effects these can ...

Background: Manual handling, lifting, or carrying of material is responsible for non-fatal injuries among employees in industries. It is the second most prevalent reported risk factor in workplaces that can lead to potential manual handling accidents and longer-term musculoskeletal disorders (MSDs). The aim of this study was the evaluation of manual material handling using the American National...

using a geographic information system and statistics, we evaluated spatial distributions ofnitrate and chloride concentrations in groundwater in an area of north-central texas with agricultural activity,in addition to oil and natural gas exploration and production. data were compiled from 40 water wells sampledin 2007. nitrate concentrations in three wells exceeded the maximum contaminant level...

Limited information is available on occupational exposures during routine, nonoutage work activities in coal-fueled power plants. This study evaluated occupational exposures to the principal contaminants in the facilities, including respirable dust (coal dust), arsenic, noise, asbestos, and heat stress. The data were collected over a 3-month period, during the summer of 2001, in 5 facilities th...