Work in impermeable protective clothing leads to a significant thermal load on its user. Limited heat and moisture transport, which is an effect of using air- moisture-impermeable coated fabrics clothing, causes increase the temperature relative humidity undergarment microclimate and, as consequence, rise skin core temperature. To protect worker from load, three types garments with phase change materials designed be worn under have been developed tested. The research, conducted participation...

This study was conducted to improve the construction of impermeable clothing protecting against liquid chemical agents in order lower thermal strain caused by during work. Previous studies indicated that light work a hot environment this kind could last 30° min only. We propose modification construction; new models protective were tested wear trials. Then results compared with basic model clothing. Results all allowed workers 39–64% longer than Thus significantly improved comfort because it...

Mine rescuers' heat load under the same physical effort (25% of maximal oxygen uptake), using three types breathing apparatus, in newly developed heat-removing underwear and outerwear was assessed for typical work conditions mine rescuers, milder harsher ambient 32 38 °C, respectively, both at relative humidity 85% air velocity 1.0 m/s. Expending while different kinds apparatus resulted a similar load. Under conditions, storage sweating intensity were greater than average limit value...

Purpose – People working in the hot environment are constantly exposed to overheating, that can lead cardiovascular disorders and as a consequence result occupational diseases. The purpose of this paper is present developed personal liquid cooling system able efficiently draw excess heat from human organism, protecting against thermal stress. Design/methodology/approach presents study concerning assessment effect coolant temperature garment (LCG) on physiological parameters subjects (heart...

The aim of this study was to determine what proportion occupationally active Poles have working capacity that enables them tolerate hard and very physical work. For purpose 1188 subjects (524 women 664 men), aged 18–64 years examined. Their maximal oxygen consumption (VO2max) determined indirectly on the basis their heart rate during an incremental exercise test a bicycle ergometer. It found occupational work excessive load for almost 40% men women. This paper discusses how should be...

A new set of underwear and protective clothing with phase change materials (PCM) for mine rescuers has been developed in order to increase their safety work. It includes PCM pouches absorbing excess heat from the body. In evaluate thermal load rescuers, physiological tests were carried out three variants possible use clothing: wearing only PCM; a clothing; complete closed-circuit compressed oxygen breathing apparatus. Tests performed difficult microclimate conditions, reflecting typical...

In addition to the intense effort of firefighters during rescue operations and an adverse thermal environment, properties clothing can also hinder performance occupational activities. The heat load diversified in a climate chamber was compared for two types protective (barrack [B] barrack under special-purpose [S] clothing) at levels air temperature (20 30 °C). During testing, physiological parameters strain were measured subjective ratings collected. There small increase 20 °C S results B...

The aim of the study was to compare heat strain among different age groups men in protective clothing during short-term physical work. Eight young (20-29 years), 6 middle-aged (41-55 and older (58-65 years) exercised for 30 min on a cycle ergometer (40% V(O2 max)) 2 hot environments with similar WBGT (ca. 26 degrees C): once minimal without infrared radiation (E1), aluminized under (E2). All subjects had sedentary jobs, but only were physically active their leisure-time. Body temperatures,...

At many workstations in a cold environment, protective clothing provided for the workers is characterized by inadequate thermal insulation, which results an adverse impact of environment on worker's body. The purpose this article to present developed new ergonomic modular clothing, allows easy adaptation insulation individual needs. This was compared laboratory study with having so far been used using physiological and physical measurements, subjective ratings state as well questionnaire...

Model "potrójnej pętli" a zmiany w gospodarce opartej na wiedzy Wprowadzenie W XXI wieku podstawowym warunkiem funkcjonowania podmiotów jest ich zdolność do generowania oraz wdrażania innowacji, które stanowią rezultat procesu uczenia się obserwowanego zarówno poziomie mikro-(przedsiębiorstwo, instytucja, fundacja, organizacja), mezo-(region), jak i makroekonomicznym (gospodarka

Research into newly developed ballistic vests to be worn by police officers under clothing was carried out with air temperature conditions of +20 °C. A vest should incorporate protective features, comfort and ergonomics. The thermal strain on users who wore the evaluated as an average individually, after they had been conditioned in high (+50 °C), low (-40 °C) or neutral (+20 temperatures, while performing various occupational activities. involved six aged 36-42 years, civilian used moderate...