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Wyszukujesz frazę "heat-stress" wg kryterium: Temat


Tytuł:
Heat Stress Analysis Using the Discomfort Index Method: Impact on Macro Environmental in Yogyakarta
Autorzy:
Nurmaya, E. M.
Abidin, A. U.
Hasanah, N. A. I.
Asmara, A. A.
Powiązania:
https://bibliotekanauki.pl/articles/2025782.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
discomfort index
environmental assessment
heat stress
impact heat stress
thermal comfort
Yogyakarta
Opis:
A growing urban development pattern can have both positive and negative impacts. One of them is the thermal discomfort in the form of heat stress. Heat stress is the maximum condition of the human body to receive the heat exposure to various activities. This study analyzed the thermal comfort in Yogyakarta City based on the Discomfort Index (DI) method. The DI method is commonly used in tropical climates using the parameters that include average air temperature and humidity. The data consists of secondary data obtained from Geophysics Station Gamping in 2004-2020 and Climatology Station Mlati in 2017-2020. The result of DI indicated that the highest value occurred in the wet moon climate type in April, with 25.63 °C. Therefore, the conditions showed that more than 50% of people in the city of Yogyakarta fall into an uncomfortable category with an average index of 24.97 °C, which can lead to heat stress. Environmental engineering can be employed to decrease the heat stress potential and improve the thermal comfort for Yogyakarta’s urban community, which is public and private open space, plant road shade vegetation, implement a green façade (vertical garden), as well as improve people’s living behavior and use appropriate clothing.
Źródło:
Journal of Ecological Engineering; 2022, 23, 1; 286-295
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of heat stress on fattening performance, carcass traits, oxidant/antioxidant status, and hepatic heat shock protein 70 levels in different plumage colors of Japanese quail (Coturnix coturnix japonica)
Autorzy:
Aslan, S.
Baykalir, Y.
Simsek, U.G.
Gul, B.
Powiązania:
https://bibliotekanauki.pl/articles/16647382.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
biochemistry
carcass yield
heat stress
quail
Opis:
The aim of this study was to investigate the impact of heat stress on production performance and oxidative stress in different plumage colors of Japanese quail. For this purpose, a total of 100 birds were used in this study. The 25 birds belonged to Wild-type (n=25, grey), Tuxedo (n=25, black), Golden (n=25, yellow) and Recessive white (n=25). The birds were reared for 42 days in an environmentally controlled room at 39°C and relative humidity of 60-65%. The body weight, body weight gain (g/bird/day), and feed conversion ratio were not different between the groups (p>0.05). However, the feed intake (g/bird/day) of the Wild-type had a higher value than the Tuxedo (black) group counterparts between 15 and 21 days different (p<0.05). There was no significant effect of heat stress on the carcass traits (p>0.05). Spleen weights were different between the groups (p<0.05). The yellow group had the highest spleen weight. The highest MDA level was found in the Recessive White variety, followed by Wild-type (grey), Golden (yellow) and Tuxedo (black), respectively. However, there were no statistical differences amongst the groups (p>0.05). There was also no statistical significance in glutathione (GSH) and superoxide dismutase (SOD) levels (p>0.05). The heat shock protein 70 kDa (HSP70) level was significantly different between the groups (p<0.001). The highest percentage was observed in the Golden (5.06%) and the lowest in the White (1.43%) variety. There was no superior color variety of Japanese quail regarding fattening performance and carcass traits. It is conceivable that when considering the stress response of the different colors, the Golden group is more sensitive to stress due to the hepatic and cellular level of HSP70.
Źródło:
Polish Journal of Veterinary Sciences; 2022, 25, 4; 599-605
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Principles of the new Universal Thermal Climate Index (UTCI) and its application to bioclimatic research in European scale
Autorzy:
Błażejczyk, Krzysztof
Broede, Peter
Fiala, Dusan
Havenith, George
Holmer, Ingvar
Jendritzky, Gerd
Kampmann, Bernhard
Kunert, Anna
Powiązania:
https://bibliotekanauki.pl/articles/2034137.pdf
Data publikacji:
2010-06-01
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
human heat balance
UTCI
heat stress
Europe's bioclimate
Opis:
During the last century about 100 indices were developed to assess influences of the atmosphere on human being. However, most of them have not close relationships with physiological reactions in man. In 1999 International Society of Biometeorology established special study group do develop new Universal Thermal Climate Index (UTCI). Since 2005 these efforts have been reinforced by the COST Action 730 (Cooperation in Science and Technical Development). In February 2009 the Action was terminated and UTCI was developed. The new UTCI index represents air temperature of the reference condition with the same physiological response as the actual condition. The index base on Fiala model that is one of the most advanced multi-node thermophysiological models and include the capability to predict both whole body thermal effects (hypothermia and hyperthermia; heat and cold discomfort), and local effects (facial, hands and feet cooling and frostbite). The model consists of two interacting systems: the controlling active system; and the controlled passive system. The assessment scale of UTCI bases on the intensity of objective physiological reactions to environmental heat stress in wide range of weather and climates. The index can be applicable in various research, for example in weather forecasts, bioclimatological assessments, bioclimatic mapping in all scales (from micro to macro), urban design, engineering of outdoor spaces, consultancy for where to live, outdoor recreation and climatotherapy, epidemiology and climate impact research. The paper presents thermophysiological principles of UTCI as well as some examples of its application to assess bioclimatic differentiation of Europe.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2010, 14; 91-102
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Expression patterns of molecular chaperone genes in Antarctic psychrophilic yeast, Glaciozyma antarctica PI12 in response to heat stress
Autorzy:
Yusof, Nur Athirah
Wong, Clemente Michael Vui Ling
Murad, Abdul Munir Abdul
Abu Bakar, Farah Diba
Mahadi, Nor Muhammad
Rahman, Ahmad Yamin Abdul
Zainuddin, Nursyafiqi
Najimudin, Mohd Nazalan Mohd
Powiązania:
https://bibliotekanauki.pl/articles/2041852.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Antarctic
psychrophile
molecular chaperone
heat-stress
transcriptome
Źródło:
Polish Polar Research; 2019, 40, 3; 273-292
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of physical and chemical mutagens on morphological behavior of tomato (Solanum Lycopersicum) CV.
Autorzy:
Akhtar, Naheed
Powiązania:
https://bibliotekanauki.pl/articles/2199615.pdf
Data publikacji:
2014-12-18
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
EMS
gamma rays
heat stress
mutagens
tomato
Opis:
Given the importance to tomato production under heat stress conditions in hot climates of Pakistan, the objective of this research work was to study the influence of temperature and application of physical and chemical mutagens on tomato (Lycopersicon esculentum L.,) CV. “Rio grande” Seeds were treated with chemical mutagen (Ethyl Methane Sulphonate) and physical mutagen (Gamma radiation) . Plants were grown in open field conditions under day/night temperatures regimes at the experimental area of Department of Horticulture, faculty of crop and food sciences, PMAS-AAUR. The experiment was set twenty treatments and four replications in Complete Randomize Block Design. It is observed that by increasing dose of mutagens shows lethal effect and morphological parameters reduced significantly. But lower doses of EMS and Gamma radiation improve thermotolerance capacity significantly. Plants were investigated for different morphological parameters i.e Plant height, no. of leaves, leaf area, relative water contents of leaves, chlorophyll contents, cell viability (TCC Assay) and pollen germination. Among gamma rays 5Kr were the only dose which survived and bear fruits. Among EMS 4mM, 8 mM, 16mM performed better under heat stress conditions than other treatments
Źródło:
Plant Breeding and Seed Science; 2014, 70; 69-79
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Exercise and Heat-Load on Simple Reaction Time of University Students
Autorzy:
Chandra, A. M.
Ghosh, S.
Barman, S.
Iqbal, R.
Sadhu, N.
Powiązania:
https://bibliotekanauki.pl/articles/89834.pdf
Data publikacji:
2010
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
reaction time
exercise
heat stress
cognitive performance
Opis:
Visual and auditory simple reaction times for both right and left hands of young university male students were recorded with a simple reaction timer, before and after an exercise schedule without and with elevated temperatures in a climatic chamber. The results indicated a decrease in both visual and auditory reaction times after the exercise, but a marked increase in them was noticed when exercise was performed at elevated temperatures. The difference in reaction times in preferred and nonpreferred hands was negligible at rest, i.e., without any exercise and elevated temperature. However, the difference was significant when exercise was performed at elevated temperatures. Visual reaction time was longer than auditory reaction time in all conditions. The results suggest that in hot industries, increased temperature has a specific rather than general effect on cognitive processes, perception and attentiveness, leading to increased chances of human errors, fatal accidents and loss of productivity.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2010, 16, 4; 497-505
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heat Gain From Thermal Radiation Through Protective Clothing With Different Insulation, Reflectivity and Vapour Permeability
Autorzy:
Brode, P.
Kuklane, K.
Candas, V.
Den Hartog, E. A.
Griefahn, B.
Holmer, I.
Meinander, H.
Nocker, W.
Richards, M.
Havenith, G.
Powiązania:
https://bibliotekanauki.pl/articles/90351.pdf
Data publikacji:
2010
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
protective clothing
heat stress
heat budget models
thermal manikin
Opis:
The heat transferred through protective clothing under long wave radiation compared to a reference condition without radiant stress was determined in thermal manikin experiments. The influence of clothing insulation and reflectivity, and the interaction with wind and wet underclothing were considered. Garments with different outer materials and colours and additionally an aluminised reflective suit were combined with different number and types of dry and pre-wetted underwear layers. Under radiant stress, whole body heat loss decreased, i.e., heat gain occurred compared to the reference. This heat gain increased with radiation intensity, and decreased with air velocity and clothing insulation. Except for the reflective outer layer that showed only minimal heat gain over the whole range of radiation intensities, the influence of the outer garments’ material and colour was small with dry clothing. Wetting the underclothing for simulating sweat accumulation, however, caused differing effects with higher heat gain in less permeable garments.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2010, 16, 2; 231-244
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cooling Suits, Physiological Response, and Task Performance in Hot Environments for the Power Industry
Autorzy:
Furtado, A. L.
Craig, B. N.
Chard, J. T.
Zaloom, V. A.
Chu, H. W.
Powiązania:
https://bibliotekanauki.pl/articles/90186.pdf
Data publikacji:
2007
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
heat stress
energy expenditure
task performance
cooling suit
Opis:
Heat stress on workers working outdoors in the power industry may result in fatigue and deterioration in task performance. This research collected and analyzed data on task performance of workers working indoors and outdoors with and without a cooling suit. The task performance was compared on the basis of heart rate, oxygen consumption, tympanic temperature, subjective responses, productivity, and error rates. Based on One-Way Analysis Of Variance (ANOVA) results, a significantly lower estimated working oxygen consumption was observed (p < .001) when the cooling suit was worn. The productivity was higher while workers wore the cooling suit as compared to no cooling suit (p = .011) whereas the error rates were significantly lower (p < .001). Also a significantly lower self-reported discomfort was observed in the neck and shoulders while working wearing the cooling suit (p = .004). This study concluded that wearing a cooling suit while working outdoors was associated with physiological benefits as well as improved task performance of the study participants.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2007, 13, 3; 227-239
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of biomarkers of heat stress using automatic health monitoring system in dairy cows
Autorzy:
Antanaitis, R.
Urbutis, M.
Juozaitienė, V.
Malašauskienė, D.
Televičius, M.
Powiązania:
https://bibliotekanauki.pl/articles/2087176.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
heat stress
cow
automatic milking system
temperature
milk
Źródło:
Polish Journal of Veterinary Sciences; 2021, 24, 2; 253-260
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-invasive technique of crop heat-stress resistance estimation
Autorzy:
Trojak, Magdalena
Skowron, Ernest
Powiązania:
https://bibliotekanauki.pl/articles/1179185.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
barley
heat resistance
heat stress
modulated fluorescence (PAM)
photosystem II (PSII)
Opis:
Sessile organisms like plants have drastically reduce possibility to avoid harmful influence of the natural habitat. Evolution of first land plants allowed adapting to harsh conditions, yet despite broad range of tolerance factors such as excessive light and temperature impose limitation for biological activity because viability and in the case of crops the productivity is limited. In fact, physiologists make lots of efforts to increase stress tolerance searching and selecting new cultivars of known crops. As in most cases the exact mechanism of reached improvement is still missing selection is occupied by immense amount of time, energy and funds. Proposed in paper technique of stress resistance estimation is inexpensive and highly reproducible solution for crop selection even at early stage of development. It is based on well-known fluorescent assessment (PAM) of plant photosynthetic machinery expose to factor of interest. We tested two barley (Hordeum vulgare L.) cultivars spring Carina and winter Lomerit exposed to thermal stress and estimated maximal (Fv/Fm) and effective photosystem II quantum yield precisely specifying the way absorbed energy is utilized by photochemical (ΦPSII) or regulated (ΦNPQ) and non-regulated (ΦNO) non-photochemical manner. Studies have confirmed various heat-resistance of tested barley cultivars and proved PAM technique utility.
Źródło:
World Scientific News; 2017, 83; 168-181
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cognitive Function in Tropical Climate
Autorzy:
Robin, Nicolas
Coudevylle, Guillaume
Powiązania:
https://bibliotekanauki.pl/articles/1177787.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Heat stress
cognition
mental performance
task complexity
tropical climate
Opis:
The physiological and psychological responses to environmental heat stress have been well established. However, in the tropical climate (i.e., hot: 31 ±2 °C and wet climatic environment: 75% ± 10% rH), that concerns millions of people, most studies deals with exercise: Aerobic exercise is negatively affected and the impact of this environment on cognition is unclear. This short communication reviews some studies using cognitive tasks realized in tropical climate or using environmental conditions leading heat stress. In agreement with the literature, it is suggested that, at school, office or university in tropical climates, it is preferable to study in air conditioning or naturally ventilated rooms than in hot and wet climatic conditions in order to reduce feelings of fatigue and thermal discomfort. Further investigations, using cooling or psychological training techniques are needed in order to try to limit the negatives effects of tropical climate on cognition.
Źródło:
World Scientific News; 2018, 100; 244-247
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intensity of heat stress in 2015 and 2018 summer seasons in the region of the Lower Silesia (Poland)
Autorzy:
Miszuk, Bartłomiej
Powiązania:
https://bibliotekanauki.pl/articles/946945.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
Bioclimate
heat stress
UTCI
Lower Silesia
south-west Poland
Opis:
The main goal of this paper was to assess the intensity of heat stress in Lower Silesia, Poland, during selected weather events characterized by high air temperatures. The complex impact of weather on the thermal load of the human organism is presented using the Universal Thermal Climate Index (UTCI). The analysis was carried out for the 2015 and 2018 summer seasons and compared with the multiannual period of 1971–2018. It was based on meteorological data from the IMGW-PIB stations of Wrocław, Jelenia Góra and Śnieżka. In order to examine how heat conditions affect UTCI in different geographical regions, stations located at different altitudes and representing the lowlands, the lower mountain zone and the summit zone of the Sudetes Mountains were considered. The research showed that during the most extreme thermal events, UTCI values in the lowlands and the lower mountain zones can be among the highest heat stress classes. In the summit zone, the maximum UTCI values are usually classed as ‘no thermal stress’.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2020, 24, 3; 138-146
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heat stress and occupational health and safety – spatial and temporal differentiation
Autorzy:
Błażejczyk, Krzysztof
Baranowski, Jarosław
Błażejczyk, Anna
Powiązania:
https://bibliotekanauki.pl/articles/2037019.pdf
Data publikacji:
2014-04-10
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
Heat stress
occupational health
UTCI
WBGT
Warsaw Agglomeration
climate change
Opis:
Evidence of climatic health hazards on the general population has been discussed in many studies but limited focus is placed on developing a relationship between climate and its effects on occupational health. Long working hours with high physical activity can cause health problems for workers ranging from mild heat cramps to severe heat stroke leading to death. The paper presents the possible risk of heat hazard to outdoor workers, using the example of Warsaw. The heat stress hazard, defined by WBGT values above 26 and 28°C and UTCI above 32 and 38°C, is assessed from two perspectives: its spatial distribution on a local scale and its temporal changes during the 21st century due to climate change. City centre and industrial districts were identified as the places with the greatest heat stress hazard. The number of heat stress days in a year (as predicted for the 21st century) is increasing, meaning that heat-related illnesses are more likely to have a direct impact on workers’ health.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2014, 18, 1; 61-67
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The microRNA-guided regulation of tillering in barley
Autorzy:
Pacak, A.
Kruszka, K.
Swida-Barteczka, A.
Karlowski, W.
Jarmolowski, A.
Szweykowska-Kulinska, Z.
Powiązania:
https://bibliotekanauki.pl/articles/951225.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
microRNA
RNA molecule
gene expression
plant development
heat stress
transcription factor
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2015, 96, 1
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analytical Study of the Heat Loss Attenuation by Clothing on Thermal Manikins Under Radiative Heat Loads
Autorzy:
Den Hartog, E. A.
Havenith, G.
Powiązania:
https://bibliotekanauki.pl/articles/90346.pdf
Data publikacji:
2010
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
protective clothing
heat stress
heat budget models
thermal manikin
thermal radiation
infrared radiation
solar radiation
Opis:
For wearers of protective clothing in radiation environments there are no quantitative guidelines available for the effect of a radiative heat load on heat exchange. Under the European Union funded project ThermProtect an analytical effort was defined to address the issue of radiative heat load while wearing protective clothing. As within the ThermProtect project much information has become available from thermal manikin experiments in thermal radiation environments, these sets of experimental data are used to verify the analytical approach. The analytical approach provided a good prediction of the heat loss in the manikin experiments, 95% of the variance was explained by the model. The model has not yet been validated at high radiative heat loads and neglects some physical properties of the radiation emissivity. Still, the analytical approach provides a pragmatic approach and may be useful for practical implementation in protective clothing standards for moderate thermal radiation environments.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2010, 16, 2; 245-261
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł

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