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Wyszukujesz frazę "heat-stress" wg kryterium: Wszystkie pola


Tytuł:
Roślinne czynniki szoku cieplnego
Plant heat stress factors
Autorzy:
Stawski, Karol
Goc, Anna
Powiązania:
https://bibliotekanauki.pl/articles/1194712.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Przyrodników im. Kopernika
Opis:
Transkrypcyjne czynniki szoku cieplnego (Hsf) są niezbędne dla wszystkich organizmów eukariotycznych do przetrwania w warunkach silnego stresu. Są odpowiedzialne za transkrypcyjną regulację genów kodujących białka chaperonowe oraz inne białka powiązane ze stresem. W porównaniu do czterech Hsf kręgowców, roślinne Hsf są bardzo liczne i mogą mieć nawet 25 członków. Wykazują one wysoki stopień specjalizacji w stosunku do rodzaju stresu jak również różnych programów rozwojowych. Pomimo pewnych wysoce zachowywanych cech, różnice w strukturze roślinnych Hsf pozwoliły na wyróżnieni trzech podstawowych klas (klasa A, B i C). W przeciwieństwie do aktywatorowej klasy A, klasy C i B o porównywalnej liczbie członków nie posiadają oczywistej funkcji. U roślin transkrypcyjna regulacja genów zależnych od Hsf jest kontrolowana przez pośrednią lub bezpośrednią kooperację pomiędzy różnymi czynnikami Hsf, jak również w wyniku interakcji z białkami czperonowymi. Wciąż jednak sieć wzajemnych zależności pomiędzy poszczególnymi Hsf jest mało zrozumiała. Z całą pewność Hsf funkcjonują jako część składowa szlaków transdukcji sygnałów aktywowanych w stresie środowiskowym jak i w trakcie rozwoju.
Heat shock factors (Hsf) are essential for all eukaryotic organisms to survive under exposures to acute stress. They are transcriptional regulators of genes encoding molecular chaperones and other stress proteins. Compared with other eukaryotes, e.g. vertebrates with 4 members of the Hsf family, the plant Hsf family shows a large multiplicity, with more than 20 members. The plant Hsf family shows a strong diversification of expression pattern not only in response to stress, but also during various developmental programs. Despite many conserved features plant Hsf are allocated based on structural characteristics into three major classes (class A, B and C). In contrast to class A, a considerable number of Hsf assigned to classes B and C heave no evident function as transcription activators. Transcriptional regulation of Hsf dependent genes in plants is controlled by direct and indirect cooperation between distinct Hsf members and by interaction with chaperones. However our understanding of the function of plant Hsf network is far from complete. Certainly, they can functions as part of different signal transduction pathways operating in response to environmental stress and during development.
Źródło:
Kosmos; 2012, 61, 4; 625-634
0023-4249
Pojawia się w:
Kosmos
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:
Ergonomics in Practice: Physical Workload and Heat Stress in Thailand
Autorzy:
Yoopat, P.
Toicharoen, P.
Glinsukon, T.
Vanwonterghem, K.
Louhevaara, V.
Powiązania:
https://bibliotekanauki.pl/articles/91204.pdf
Data publikacji:
2002
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
ergonomics
heat stress
physiological strain
ciepło
Tajlandia
ergonomia
obciążenie pracą umysłową
stres
praca w wysokiej temperaturze
fizjologia pracy
warunki pracy
Opis:
This study consists of assessments of the thermal environment and physiological strain in tasks associated with airport, construction, and metal jobs. The number of male and female participants was 108. Environmental heat stress was evaluated with the WBGT index. Physiological strain was evaluated by the relative cardiovascular load (%CVL) based on the measurements of heart rate. Also the increase of body temperature, weight loss, and perceived discomfort were determinated. At work sites the assessments lasted for 2 to 4 hrs for each participant. The mean physiological strain exceeded the level of 30%CVL. Severe peaks (over 60%CVL) were observed in specific tasks being in agreement with perceived discomfort ratings. The increase of body temperature and weight loss in most cases remained within acceptable limits. For the most strenuous tasks, various ergonomic improvements were developed in consultation with workers and managers.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2002, 8, 1; 83-93
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
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:
Short-term heat stress effects on a cyp 11A1 canola plants
Autorzy:
Sakhno, L.
Slyvets, M.
Korol, N.
Karbovska, N.
Ostapchuk, A.
Kuchuk, M.
Powiązania:
https://bibliotekanauki.pl/articles/80876.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
abiotic stress
climate change
heat stress
cyp11A1 gene
nuclear genome
gene encoding
cytochrome P450-SCC
adrenal cortex mitochondrion
rape plant
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
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:
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:
Możliwości minimalizowania skutków stresu cieplnego u drobiu
Procedures of minimizing heat stress in poultry production
Autorzy:
Mroczek-Sosnowska, N.
Zbikowski, A.
Lukasiewicz, M.
Wnuk, A.
Niemiec, J.
Powiązania:
https://bibliotekanauki.pl/articles/859752.pdf
Data publikacji:
2014
Wydawca:
Krajowa Izba Lekarsko-Weterynaryjna
Tematy:
chow zwierzat
drob
warunki utrzymania zwierzat
stres termiczny
profilaktyka
skutki
ograniczanie skutkow stresu
Źródło:
Życie Weterynaryjne; 2014, 89, 08
0137-6810
Pojawia się w:
Życie Weterynaryjne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Występowanie stresu ciepła w środkowo-zachodniej Polsce
The occurrence of heat stress in central-west Poland
Autorzy:
Makosza, A.
Michalska, B.
Powiązania:
https://bibliotekanauki.pl/articles/2084528.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
stres cieplny
Polska Srodkowo-Zachodnia
wystepowanie
obciazenie cieplne
wskaznik HSI
klimat
pogoda
upaly
czlowiek
Opis:
On the basis of term values (12 UTC) of meteorological data of seven synoptic stations in the central-west Poland heat stress index (HSI - Heat Stress Index) was calculated. During the year the heat stress of varying intensity occurred from February to November with a maximum in August. The rest of the year was dominated by thermoneutral conditions. In the period 1971-2006, and especially since 1999, becoming more frequent of occurrence days with an intensity of heat stress was so great, that pose a risk increase in body temperature (HSI > 100%). Based on the frequency of the occurrence of days with values HSI > 30% in the central-west Polad three areas with different number of days chargeable was distinguished.
Źródło:
Prace i Studia Geograficzne; 2011, 47; 265-274
0208-4589
Pojawia się w:
Prace i Studia Geograficzne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of heat stress on biochemical parameters of hens
Wpływ stresu cieplnego na parametry biochemiczne badanych kur
Autorzy:
Havlicek, Z.
Slama, P.
Powiązania:
https://bibliotekanauki.pl/articles/126818.pdf
Data publikacji:
2011
Wydawca:
Towarzystwo Chemii i Inżynierii Ekologicznej
Tematy:
heat stress
temperature
hen
acid-base
pH
stres cieplny
temperatura
kura
właściwości kwasowo-zasadowe
Opis:
The objective of this paper was to evaluate the effects of high temperatures on biochemical parameters of hens. Heat stress generally causes a decrease in feed intake. The hypothesis that feed intake, egg production, egg quality measures, acid-base status (pH, pCO2, HCO3 –) of hens would be influenced by the high temperature period was tested. Twenty four Isa Brown hens at 60 weeks of age were used in this experiment and hens were randomly separated into 2 equal groups. Each group contains 12 hens. First control group was housed at 20.1÷21.2°C and 60÷65% relative humidity. Experimental group was housed for 2 weeks at 20.5°C and 60÷65% relative humidity in experimental box, and then exposed to 27°C and 60% for 4 week, and then allowed to recover for 2 week at 20.5°C and 60% relative humidity. All production parameters and egg quality were significantly affected by heat stress. Feed intake during first week heat period was significantly reduced (18%). In three next weeks, feed intake was increasing with reduction 14.5%, 8% and 9.5%, respectively. Blood pH values were significantly lower from 3rd week of exposure. Blood pH had these values: 1st week 7.372, 2nd week 7.371, 3rd week 7.380 and 4th week 7.289.
Źródło:
Proceedings of ECOpole; 2011, 5, 1; 57-60
1898-617X
2084-4557
Pojawia się w:
Proceedings of ECOpole
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:
Influence of heat stress on leaf morphology and nitrogen–carbohydrate metabolisms in two wucai (Brassica campestris L.) genotypes
Autorzy:
Yuan, L.
Tang, L.
Zhu, S.
Hou, J.
Chen, G.
Liu, F.
Liu, S.
Wang, C.
Powiązania:
https://bibliotekanauki.pl/articles/56883.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Botaniczne
Opis:
Heat stress is a major environmental stress that limits plant growth and yield worldwide. The present study was carried out to explore the physiological mechanism of heat tolerant to provide the theoretical basis for heat-tolerant breeding. The changes of leaf morphology, anatomy, nitrogen assimilation, and carbohydrate metabolism in two wucai genotypes (WS-1, heat tolerant; WS-6, heat sensitive) grown under heat stress (40°C/30°C) for 7 days were investigated. Our results showed that heat stress hampered the plant growth and biomass accumulation in certain extent in WS-1 and WS-6. However, the inhibition extent of WS-1 was significantly smaller than WS-6. Thickness of leaf lamina, upper epidermis, and palisade mesophyll were increased by heat in WS-1, which might be contributed to the higher assimilation of photosynthates. During nitrogen assimilation, WS-1 possessed the higher nitrogen-related metabolic enzyme activities, including nitrate reductase (NR), glutamine synthetase (GS), glutamate synthase (GOGAT), and glutamate dehydrogenase (GDH), which were reflected by higher photosynthetic nitrogen-use efficiency (PNUE) with respect to WS-6. The total amino acids level had no influence in WS-1, whereas it was reduced in WS-6 by heat. And the proline contents of both wucai genotypes were all increased to respond the heat stress. Additionally, among all treatments, the total soluble sugar content of WS-1 by heat got the highest level, including higher contents of sucrose, fructose, and starch than those of WS-6. Moreover, the metabolism efficiency of sucrose to starch in WS-1 was greater than WS-6 under heat stress, proved by higher activities of sucrose phosphate synthase (SPS), sucrose synthase (SuSy), acid invertase (AI), and amylase. These results demonstrated that leaf anatomical alterations resulted in higher nitrogen and carbon assimilation in heat-tolerant genotype WS-1, which exhibited a greater performance to resist heat stress.
Źródło:
Acta Societatis Botanicorum Poloniae; 2017, 86, 2
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
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:
Slowing down aging from within: mechanistic aspects of anti-aging hormetic effects of mild heat stress on human cells.
Autorzy:
Rattan, Suresh
Gonzalez-Dosal, Regina
Nielsen, Elise
Kraft, David
Weibel, Jens
Kahns, Søren
Powiązania:
https://bibliotekanauki.pl/articles/1043285.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
aging
signal transduction
anti-aging
longevity
proteasome
heat shock
Opis:
Since aging is primarily the result of a failure of maintenance and repair mechanisms, various approaches are being developed in order to stimulate these pathways and modulate the process of aging. One such approach, termed hormesis, involves challenging cells and organisms by mild stress that often results in anti-aging and life prolonging effects. In a series of experimental studies, we have reported that repeated mild heat stress (RMHS) has anti-aging hormetic effects on growth and various cellular and biochemical characteristics of human skin fibroblasts undergoing aging in vitro. These beneficial effects of repeated challenge include the maintenance of stress protein profile, reduction in the accumulation of oxidatively and glycoxidatively damaged proteins, stimulation of the proteasomal activities for the degradation of abnormal proteins, improved cellular resistance to other stresses, and enhanced levels of cellular antioxidant ability. In order to elucidate the molecular mechanisms of hormetic effects of RMHS, we are now undertaking studies on signal transduction pathways, energy production and utilisation kinetics, and the proteomic analysis of patterns of proteins synthesised and their posttranslational modifications in various types of human cells undergoing cellular aging in vitro. Human applications of hormesis include early intervention and modulation of the aging process to prevent or delay the onset of age-related conditions, such as sarcopenia, Alzheimer's disease, Parkinson's disease, cataracts and osteoporosis.
Źródło:
Acta Biochimica Polonica; 2004, 51, 2; 481-492
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of human thermal comfort and heat stress in an outdoor urban setting in summer under arid climatic conditions
Autorzy:
Abdel-Ghany, A. M.
Al-Helal, I. M.
Shady, M. R.
Powiązania:
https://bibliotekanauki.pl/articles/950038.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
arid regions
sensory perception
thermal comfort
climatic conditions
effective temperature
human thermal comfort
solar-radiation fluxes
thermal stress
heat stress
suchy klimat
percepcja sensoryczna
komfort cieplny
warunki klimatyczne
temperatura efektywna
komfort cieplny człowieka
strumienie promieniowania słonecznego
stres termiczny
stres cieplny
Opis:
Thermal sensation and heat stress potential were evaluated in summer in an outdoor arid environment. Such evaluation had never been made in arid regions. Various scales: the temperaturehumidity index (THI), physiological effective temperature (PET), universal thermal climatic index (UTCI) and standard effective temperature (SET*) were used for the evaluation. RayMan software model was used to estimate the PET and SET* and the UTCI-calculator was used for UTCI. The required air dry and wet bulb temperatures (Td, Tw), solar radiation flux (S0) and wind speed (V) were measured in summer (April 29–July 15). The results showed that: Persons are exposed to strong heat stress and would feel very hot most of the day time; and they are safe from heat stress risk and would feel comfortable most of the night time. Heat stress levels can be determined using the PET or UTCI scales; both are valid for arid environment and their results are almost similar; however, the THI cannot be used. SET* index specifically describes the thermal sensations and discomfort conditions along with summer days at any activity under arid conditions.
Źródło:
Environment Protection Engineering; 2014, 40, 3; 139-150
0324-8828
Pojawia się w:
Environment Protection 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:
Ocena ryzyka zawodowego w aspekcie stresu cieplnego w pomieszczeniach zamkniętych
Risk assessment in terms of heat stress in enclosed spaces
Autorzy:
Bogdan, A.
Powiązania:
https://bibliotekanauki.pl/articles/180936.pdf
Data publikacji:
2011
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
ryzyko zawodowe
dyskomfort cieplny
norma
obciążenie cieplne
środowisko pracy
professional risk
thermal discomfort
standarization
thermal load
working environment
Opis:
W artykule zaprezentowano metodę oceny ryzyka zawodowego w pomieszczeniach zamkniętych, która dotyczy zarówno możliwości wystąpienia obciążenia cieplnego w środowisku gorącym, jak i dyskomfortu termicznego w środowisku umiarkowanym, w rozumieniu PN-EN ISO 15265:2005. Norma ta może być stosowana w każdym środowisku pracy, w którym parametry powietrza, metabolizm pracowników lub izolacyjność cieplna ich odzieży mają stałe lub zmienne w czasie wartości.
This paper presents a method of risk assessment in enclosed spaces; it applies both to potential heat stress in hot environments and to thermal discomfort in moderate environments, as defined in PN-EN ISO 15265:2005. This standard can be used in any work environment in which the parameters of the air, the workers' metabolic rate or the thermal insulation of their clothing have stable or time-varying values.
Źródło:
Bezpieczeństwo Pracy : nauka i praktyka; 2011, 3; 7-10
0137-7043
Pojawia się w:
Bezpieczeństwo Pracy : nauka i praktyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mitigation of heat stress effects by using shade net on Washington navel orange trees grown in Al-Nubaria region, Egypt
Autorzy:
Abd El-Naby, S.K.
Esmail, A.M.A.M.
Baiea, M.H.M.
Amin, O.A.E.
Amr Abdelkhalek, A.M.
Powiązania:
https://bibliotekanauki.pl/articles/12715684.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Opis:
High temperature stress can be detrimental to plants, resulting in reduced fruit yield and increased incidences of fruit disorders. One strategy that farmers can use to maintain or increase their yields in the face of a changing climate is to adjust of farm climate by using shade net on the trees. Such, the use of shade netting on Washington navel orange planted on the sandy soil in Al-Nubaria region, Egypt were studied during two successive seasons, either using a permanent shade throughout all the season or using a moveable shade for certain period from the first of March until the end of June for every season. Growth (No. of shoots/one meter branch, No. of leaves/shoot, shoot length and chlorophyll content of the leaves, leaf area and tree canopy), macronutrients (N, P, K, Ca, Mg) and micronutrients (Fe, Zn, Mn, Cu, Na) content in the leaves, fruit characteristics (number, weight, diameter, peel thickness, total soluble solids, total acidity and ascorbic acid), yield and crop efficiency, were determined. It can be concluded that covering Washington navel orange trees grown on sandy soil with shade net especial covering the trees for certain period was very effective at protecting orange trees and led to improve the growth, increase the yield and maintain fruit quality.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2020, 19, 3; 15-24
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
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:
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:
Wpływ rodzaju pokrycia podłoża na przestrzenne zróżnicowanie stresu cieplnego
Impact of type of surface coverage on spatial diversity of heat stress
Autorzy:
Kusmierek-Tomaszewska, R.
Zarski, J.
Dudek, S.
Powiązania:
https://bibliotekanauki.pl/articles/61266.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
miasta
warunki termiczne
upaly
pokrycie powierzchni
miejska wyspa ciepla
dni charakterystyczne
temperatura odczuwalna
zroznicowanie przestrzenne
stres termiczny
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2015, IV/1
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
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:
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

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