This paper aims to assess the effects of urbanization on heat stress comparing two neighbourhoods in tropical city Rio de Janeiro, Brazil, that differ terms building density and vegetation cover. The outdoor was evaluated by Wet Bulb-Globe Temperature (WBGT) Index, which considers combined effect air temperature, relative humidity, solar radiation wind speed, during year 2016. urban neighbourho...

In pressure-atomized sprays, the liquid droplets and gas in two-phase flow field may exhibit self-similar properties, so that spray as a whole be described self-similar. This description is used to model mass transfer from ambient by evaporation of droplet liquid. The concentration vapor phase solution related transport equation form. transform source representing effect compared against profil...

background: a cross sectional study was conducted to determine the association between occupational stress risk factors and salivary alpha-amylase activity levels among fresh fruit bunch (ffb) cutters at oil palm plantation.  methods: a total of 109 ffb cutters were selected from two oil palm plantations in pulau carey, selangor at west coast of malaysia in 2015. questionnaires were used to det...

Abstract Mining is an activity with a high risk of accidents in open pit and underground mining sites. Various factors that cause have been found through accident investigation, such as miners’ fatigue. Miner’s fatigue can be caused by environmental workload controlled to make safe comfortable working environment prevent accidents. This research objective evaluate the relationship between form ...

The worsening urban heat island (UHI) effect poses a great challenge to the thermal comfort of people outdoors. However, there has not been summary mechanisms by which UHI affects outdoor (OTC). This paper reviews commonly used OTC evaluation indexes, data collection methods, and mitigation measures discusses relationship between OTC. review is limited peer-reviewed journal publications found i...

This study assesses heatstroke risk in the near future (2031–2050) under RCP8.5 scenario. The developed model is based on a generalized linear with number of ambulance transport due to (hereafter patients heatstroke) as explained variable and daily maximum temperature or wet bulb globe (WBGT) explanatory variable. With temperature, we performed projection case considering only climate change (C...

Ultra Violet (UV) parasols are a reasonable countermeasure against heat stress as they portable and inexpensive. This study compared the mitigation effect of UV parasol with that street trees dry-mist spraying on hot humid summer day in Japan. We observed meteorological elements calculated universal thermal climate index (UTCI) wet-bulb globe temperature (WBGT) under parasol, trees, spraying, d...

The thermal strain imposed on helicopter aircrew by chemical protective (NBC) clothing in summer in Germany has been assessed in a laboratory simulation. The environmental conditions used were dry bulb temperature 35 degrees C, wet bulb temperature 19 degrees C and a wind speed of 2.0 m X s-1. The NBC equipment imposed a significant thermal strain on the crewman when compared with standard summ...

The current study provides details of sleep (or inactivity) in two wild, free-roaming African elephant matriarchs studied in their natural habitat with remote monitoring using an actiwatch subcutaneously implanted in the trunk, a standard elephant collar equipped with a GPS system and gyroscope, and a portable weather station. We found that these two elephants were polyphasic sleepers, had an a...