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Wyszukujesz frazę "physiological stress" wg kryterium: Temat

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    Wyświetlanie 1-31 z 31
    Tytuł:
    Markers of physiological stress in common pea (Pisum sativum) in response to soil contamination with tetracycline
    Autorzy:
    Ziolkowska, A.
    Dobiesz, M.
    Piotrowicz-Cieslak, A.I.
    Adomas, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/80121.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    physiological stress
    common pea
    Pisum sativum
    soil contamination
    tetracycline
    peroxidase activity
    carbohydrate
    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:
    Assessment of occupational health problems and physiological stress among the brick field workers of West Bengal, India
    Autorzy:
    Das, Banibrata
    Powiązania:
    https://bibliotekanauki.pl/articles/2178850.pdf
    Data publikacji:
    2014-06-21
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    brick field workers
    physiological stress
    occupational health problems
    thermal stress
    lung function values
    hand-grip strength
    Opis:
    Objectives: The brick field industry is one of the oldest industries in India, which employs a large number of workers of poor socioeconomic status. The main aim of the present investigation is i) to determine the prevalence of musculoskeletal disorders among brick field workers, ii) to determine the prevalence of respiratory disorders and physiological stress among brick field workers compared to control workers. Material and Methods: For this study, a total of 220 brick field workers and 130 control subjects were selected randomly. The control subjects were mainly involved in hand-intensive jobs. The Modified Nordic Questionnaire was applied to assess the discomfort felt among both groups of workers. Thermal stress was also assessed by measuring the WBGT index. The pulmonary functions were checked using the spirometry. Physiological assessment of the workload was carried out by recording the heart rate and blood pressure of the workers prior to work and just after work in the field. Results: Brick field workers suffered from pain especially in the lower back (98%), hands (93%), knees (86%), wrists (85%), shoulders (76%) and neck (65%). Among the brick-making activities, brick field workers felt discomfort during spading for mud collection (98%), carrying bricks (95%) and molding (87%). The results showed a significantly lower p value < 0.001 in FVC, FEV₁, FEV₁/FVC ratio and PEFR in brick field workers compared to the control group. The post-activity heart rate of the brick field workers was 148.6 beats/min, whereas the systolic and diastolic blood pressure results were 152.8 and 78.5 mm/Hg, respectively. Conclusions: This study concludes that health of the brick field workers was highly affected due to working in unhealthy working conditions for a long period of time.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2014, 27, 3; 413-425
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of Ergonomic and Occupational Health-Related Problems Among Female Prawn Seed Collectors of Sunderbans, West Bengal, India
    Autorzy:
    Das, B.
    Ghosh, T.
    Gangopadhyay, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/91151.pdf
    Data publikacji:
    2012
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    musculoskeletal disorders
    physiological stress
    prawn seed collectors
    hand grip strength
    rapid entire body assessment (REBA)
    Opis:
    Sixty female prawn seed collectors and 60 female control subjects from Sajenakhali and Sandeshkhali blocks of Sunderbans, West Bengal, India, were randomly selected to evaluate and compare musculoskeletal disorders and physiological stress. The control group was engaged in domestic work involving minimum handintensive activities. The modified Nordic musculoskeletal questionnaire and rapid entire body assessmentwere used. Most subjects suffered from discomfort in different body parts, especially in the lower back (98%), knees (88%), shoulders (75%), ankles (70%) and feet (67%). This study reveals that female prawn seed collectors suffer from significant physiological load and extreme physiological stress due to prolonged working hours in a standing posture and excessive work pressure. Consequently, all these factors affect female prawn seed collectors’ health and work performance.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2012, 18, 4; 531-540
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza psychofizjologicznych uwarunkowań dynamiki stresu u kandydatów do zawodu nurka i płetwonurka, z uwzględnieniem psychologicznych aspektów nurkowania
    The analysis of psychophysiological conditions of stress dynamics in candidates to the position of a professional diver with consideration of the psychological aspects of diving
    Autorzy:
    Remlein, M.
    Buczyński, J.
    Olszański, R.
    Buczyński, A.
    Kobos, Z.
    Juszczak, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1360346.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Medycyny i Techniki Hiperbarycznej
    Tematy:
    physiological stress
    psychological stress
    panic
    anxiety
    diving stress
    coping
    temperament
    personality
    stres fizjologiczny
    stres psychologiczny
    panika
    lęk
    stres w nurkowaniu
    radzenie sobie
    osobowość
    Opis:
    The article presents a characterisation of stress situations and psychological reactions during diving. It describes the fundamental personality dimensions and temperament features, and discusses the results of research into the methods of coping with stress as well as the levels of anxiety in candidates to the position of a professional driver.
    W artykule dokonano charakterystyki sytuacji stresowych i reakcji psychicznych, podczas nurkowania. Przedstawiono podstawowe wymiary osobowości i cechy temperamentu. Omówiono wyniki badań sposobów radzenia sobie ze stresem oraz poziomy natężenia lęku u kandydatów do zawodu nurka i płetwonurka.
    Źródło:
    Polish Hyperbaric Research; 2015, 1(50); 7-23
    1734-7009
    2084-0535
    Pojawia się w:
    Polish Hyperbaric Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphological and physiological responses of some halophytes to salinity stress
    Autorzy:
    Mohammadi, Hamid
    Kardan, Javid
    Powiązania:
    https://bibliotekanauki.pl/articles/763867.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
    Tematy:
    salinity stress
    halophytes
    morphological parameters
    physiological parameters
    Opis:
    A pot experiment was conducted to examine whether the morphological and physiological characteristics of some halophytes may be affected by salt stress. For this purpose, a factorial experiment based on randomized complete block design was carried out with three replications. The treatments were some halophytes (Salicornia europaea, Atriplex leucoclada, and Kochia scoparia) and salinity stress levels [Electrical conductivity 0 (Hoagland’s solution), Hoagland’s solution consisting of 100, 200, 300 and 500 mM NaCl]. Among the halophytes tested, Salicornia europaea had significantly higher shoot and root of dry matters compared to the other halophytes in all salt treatments. Salinity stress resulted in an increase in photosynthetic pigments up to 200 mM and thereafter, it decreased in all of the studied plants. Photosynthetic pigments, ranked in a descending order, were high in Kochia scoparia, Salicornia europaea, and Atriplex leucoclada. In addition, salinity stress led to an enhancement in malondialdehyde (MDA) and H2O2. The tolerance of Salicornia europaea under high salinity stress was associated with low MDA and H2O2 contents as well as high contents of photosynthetic pigments. The shoot and root Na+ increased considerably by augmenting the salinity levels in all halophytic plants; however, there was a significant difference among halophytes at higher salinity levels. The shoot K+ decreased by increasing the salinity levels, but K+ partitioning pattern varied among the halophytes. Under saline conditions, the shoot and root Na+/K+ ratio of all halophytes grew. The highest and the lowest of Na+ were observed in Salicornia europaea and Kochia scoparia, respectively. Thus, the Na+/K+ ratio could be considered as an indicator of salt evaluation. Nitrogen, protein content, dry matter digestibility (DMD), and metabolizable energy (ME) were high in Salicornia europaea plants in comparison to other plants at 200–500 mM salinity levels; in contrast, acid detergent fiber (ADF) and netural detergent fiber (NDF) were low. According to the results of this study, the tolerance of halophytes towards NaCl is possibly due to the differences in damage from reactive oxygen species (ROS), especially H2O2, and toxicity to metabolism Na+.
    Źródło:
    Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia; 2015, 70, 2
    2083-3563
    0066-2232
    Pojawia się w:
    Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of work-related sleep restriction on acute physiological and psychological stress responses and their interactions: A review among emergency service personnel
    Autorzy:
    Wolkow, Alexander
    Ferguson, Sally
    Aisbett, Brad
    Main, Luana
    Powiązania:
    https://bibliotekanauki.pl/articles/2177400.pdf
    Data publikacji:
    2015-03-26
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    sleep
    cytokines
    stress
    cortisol
    mood
    psycho-physiological
    Opis:
    Emergency work can expose personnel to sleep restriction. Inadequate amounts of sleep can negatively affect physiological and psychological stress responses. This review critiqued the emergency service literature (e.g., firefighting, police/law enforcement, defense forces, ambulance/paramedic personnel) that has investigated the effect of sleep restriction on hormonal, inflammatory and psychological responses. Furthermore, it investigated if a psycho-physiological approach can help contextualize the significance of such responses to assist emergency service agencies monitor the health of their personnel. The available literature suggests that sleep restriction across multiple work days can disrupt cytokine and cortisol levels, deteriorate mood and elicit simultaneous physiological and psychological responses. However, research concerning the interaction between such responses is limited and inconclusive. Therefore, it is unknown if a psycho-physiological relationship exists and as a result, it is currently not feasible for agencies to monitor sleep restriction related stress based on psycho- physiological interactions. Sleep restriction does however, appear to be a major stressor contributing to physiological and psychological responses and thus, warrants further investigation.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2015, 28, 2; 183-208
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physiological acclimation of Dicranostigma henanensis to soil drought stress and rewatering
    Autorzy:
    Wang, N.
    Chen, H.
    Wang, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/2130560.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    Dicranostigma henanensis
    drought stress
    physiological changes
    photosynthesis
    rewatering
    Opis:
    e adaptability of plants to drought not only includes their ability to resist drought stress, but also their ability to recover aer stress is relieved. In this study, a weighting method was used to control the soil water content to produce a soil water stress gradient. e effects of drought and rewatering on the changes in osmotic adjustment substance content, antioxidant enzyme activity, and photosynthetic characteristics of potted Dicranostigma henanensis seedlings were measured on Day 28 aer the imposition of watering treatments and Day 7 aer rewatering. During the drought stress process, the relative electrical conductivity, thiobarbituric acid, water use efficiency, and proline content displayed a continuously increasing trend. Further, the net photosynthetic rate, stomatal conductance, and transpiration rate constantly decreased, while the chlorophyll content first increased and then decreased. Aer rehydration, superoxide dismutase (EC 1.15.1.1) activity and photosynthetic parameters quickly recovered to the CK level (soil moisture is 75%–80% of the maximum water holding capacity in the field), indicating that D. henanensis plants have a strong ability to repair the damage caused by drought stress. In particular, the photosynthetic machinery may have sophisticated regulation and repair mechanisms, which may be associated with its stable photosystem. Collectively, our findings demonstrate that the D. henanensis plant has a strong ability to adapt to arid environments, and therefore could be an excellent ornamental flower for landscaping in arid and semiarid areas.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2021, 90
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stress Coping Strategies for 8- and 9-year-old Children
    Strategie radzenia sobie ze stresem dzieci 8- i 9-letnich
    Autorzy:
    Cywińska, Małgorzata
    Powiązania:
    https://bibliotekanauki.pl/articles/1071073.pdf
    Data publikacji:
    2020-06-15
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    stress
    resistance to stress
    children’s physiological and behavioral reactions to stress
    problem-focused coping strategies
    emotion-focused coping strategies
    coping strategies for children in early school age
    Opis:
    Stress is an integral part of our lives. It also applies to our childhood. That is why it is so important to know how children cope with stress (how they learn coping strategies) and to equip them with the skill set to cope constructively with stressful situations throughout life. This article describes strategies for coping with stress that are characteristic for children at the end of early school education. They have been identified in the course of my own research aimed at characterizing child stress and relate to a fragment of research activities aimed at 8- and 9-year-old children. The research established that in some children the developmental process of coping with stress has started: children look for, investigate, and think how to cope with difficulties. In this struggle, however, they focus on people ho could be a source of support for them in coping with stressful situations. Among children’s stress coping strategies, an important role is also played by emotionally focused strategies, which are aimed at reducing negative emotions and arousing positive emotions.
    Źródło:
    Studia Edukacyjne; 2020, 57; 7-15
    1233-6688
    Pojawia się w:
    Studia Edukacyjne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of trace metal pretreatment on plant fungi interaction
    Autorzy:
    Piechalak, A.
    Malecka, A.
    Kutrowska, A.
    Wojtera-Kwiczor, J.
    Hanc, A.
    Baralkiewicz, D.
    Tomaszewska, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/80724.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    trace metal
    pretreatment
    abiotic stress
    biotic stress
    physiological condition
    reactive oxygen species
    antioxidant
    plant-fungi interaction
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurements of physiological parameters to evaluate in vitro selected Alyssum lines
    Autorzy:
    Hanus-Fajerska, E.
    Muszynska, E.
    Kozminska, A.
    Kolton, A.
    Augustynowicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/80490.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    plant cell
    metabolism
    heavy metal
    stress
    Alyssum montanum
    physiological parameter
    micropropagation
    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:
    Physiological adaptations to osmotic stress and characterization of a polyethylene glycol-responsive gene in Braya humilis
    Autorzy:
    Lirong, W.
    Pengshan, Z.
    Xin, Z.
    Xiaopeng, W.
    Xiaofei, M.
    Yi, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/58230.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    physiological adaptation
    osmotic stress
    polyethylene glycol
    gene
    Braya humilis
    drought
    expression pattern
    Opis:
    Braya humilis (Brassicaceae) is a widely distributed plant in arid and semi-arid regions of northern Asia. This plant is well adapted to extremely arid conditions and is a promising candidate species to discover novel drought tolerance strategies. However, not much information about the mechanism(s) mediating drought resistance in this species is currently available. Therefore, the present study aimed to characterize the physiological traits and expression patterns of a polyethylene glycol (PEG)-responsive gene in B. humilis responding to different levels of osmotic stress induced by PEG-6000. Several important physiological parameters were examined, including the levels of relative water content, soluble protein, malondialdehyde, and antioxidant enzyme activity. A tolerance threshold between 20 and 30% PEG-6000 was identified for B. humilis. The water status and oxidative damage below this threshold were maintained at a relatively constant level during the 12 h of treatment. However, once the threshold was exceeded, the water status and oxidative damage were obviously affected after treatment for 4 h. The soluble protein results suggest that B. humilis maintains a vigorous resistance to osmotic stress and that it may play a greater role in osmotic regulation at late stages of stress. Moreover, superoxide dismutase and catalase may be important at preventing oxidative damage in plants at early stages of stress, while peroxidase may be more involved in some biological processes that resist osmotic stress at the late stage, especially in severely damaged plants. Furthermore, a PEG-responsive gene, BhCIPK12, was identified by differential display reverse transcription-polymerase chain reaction (PCR), cloned, and characterized by quantitative real-time PCR. We hypothesized that this gene may play an important role in mediating osmotic stress or drought resistance in plants. Altogether, these results provide valuable insights into the mechanism(s) mediating drought tolerance in B. humilis.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2016, 85, 1
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Relationship between jasmonates and ethylene in regulation of some physiological processes in plants under stress conditions
    Zależności między jasmonianami a etylenem w regulacji niektórych procesów fizjologicznych u roślin w warunkach stresowych
    Autorzy:
    Saniewski, M.
    Ueda, J.
    Miyamoto, K.
    Urbanek, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/800995.pdf
    Data publikacji:
    2002
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    jasmonate
    ethylene
    relationship
    regulation
    physiological process
    plant species
    reactive oxygen species
    stress condition
    biotic factor
    abiotic factor
    stress signal
    Opis:
    A relationship between jasmonates and ethylene in regulation of some physiological processes in plants under stress conditions is presented. Jasmonates are naturally occurring plant hormones showing various important biological activities in the regulation of plant growth development and in defense responses against a wide variety of abiotic and biotic agents. Jasmonates have been reported to control ethylene biosynthesis in intact plants and their organs. Mechanical wounding and other abiotic (osmotic stress, water deficit, dessication stress, heavy metals, touch, ozone) and biotic stresses (pathogen infection and insect invasion) are well known to be common factors inducing ethylene and jasmonates biosynthesis, and reactive oxygen species generation (ROS). Jasmonates have been well known to interact with ethylene in regulation of different processes; various kinds of interactions were documented: 1) synergistic interaction (i.e gene expression of proteinase inhibitors, osmotin, defensin), 2) ethylene suppresses processes induced by jasmonates (i.e. biosynthesis of nicotine, vegetative storage proteins and lectins), 3) jasmonates suppress processes induced by ethylene (i.e. ethylene-induced apical hook). Jasmonic acid carboxyl methyltransfe- rase (JMT) is a key enzyme for jasmonate-regulated plant responses. Activation of JMT expression leads to production of methyl jasmonate (JA-Me). JA-Me can act as an intracellular regulator, a diffusible intercellular signal transducer, or an airborne signal mediating intra- and interplant communications. Jasmonates represent an integral part of the signal transduction chain between stress signals) and stress responses(s), in most cases of the induction of gene expression and the accumulation of defense specific proteins and secondary metabolites.
    Zależności między jasmonianami i etylenem w regulacji niektórych procesów fizjologicznych u roślin w warunkach stresowych są przedmiotem tego przeglądu. Jasmoniany są naturalną grupą hormonów roślinnych i wykazują wiele ważnych funkcji fizjologicznych w regulacji wzrostu i rozwoju roślin i w reakcjach obronnych przeciwko różnym czynnikom abiotycznym i biotycznym. Wykazano, że jasmoniany odgrywają ważną rolę w regulacji biosyntezy etylenu w roślinach nienaruszonych i ich organach. Mechaniczne uszkodzenie i inne czynniki abiotyczne (stres osmotyczny, deficyt wodny, stres desykacyjny, metale ciężkie, dotyk, ozon) i czynniki biotyczne (infekcja przez patogeny i żerowanie owadów) powodują wzmożoną biosyntezę etylenu i jasmonianów oraz generowanie reaktywnych form tlenu (ROS). Jasmoniany współdziałają z etylenem w regulacji różnych procesów, a interakcje te mają różny charakter: 1) synergistyczne współdziałanie (np. ekspresja genów inhibitorów proteinaz, osmotyny, defenzyny), 2) etylen hamuje procesy indukowane przez jasmoniany (np. biosynteza nikotyny, wegetatywnych białek zapasowych, lektyn), 3) jasmoniany hamują procesy indukowane przez etylen (np. wygięcia części wierzchołkowych powodowane przez etylen). Metylotransferaza karboksylową kwasu jasmonowego (JMT) jest kluczowym enzymem w procesach regulowanych przez jasmoniany w roślinach. Aktywacja ekspresji JMT doprowadza do powstawania jasmonianu metylu (JA-Me) z kwasu jasmonowego. JA-Me może działać jako regulator w obrębie komórki i jako międzykomórkowy sygnał transdukcyjny, a jako lotna substancja stanowi przekaźnik informacji między roślinami. Sugeruje się, że endogenne jasmoniany stanowią przekaźnik informacji między sygnałem stresowym a reakcją stresową, polegającą głównie na indukcji ekspresji genowej i biosyntezie specyficznych białek i metabolitów wtórnych.
    Źródło:
    Zeszyty Problemowe Postępów Nauk Rolniczych; 2002, 481, 1
    0084-5477
    Pojawia się w:
    Zeszyty Problemowe Postępów Nauk Rolniczych
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Molecular and physiological aspects of the role of root hairs during drought stress in barley
    Autorzy:
    Kwasniewski, M.
    Daszkowska-Golec, A.
    Chwialkowska, K.
    Janiak, A.
    Szarejko, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/80581.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    physiological aspect
    molecular aspect
    root hair
    drought stress
    barley
    photosynthesis
    photosynthetic apparatus
    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:
    Subcellular antioxidative defense of plants during abiotic stress
    Autorzy:
    Zechmann, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/81187.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    antioxidant
    ascorbate
    glutathione
    Arabidopsis thaliana
    reactive oxygen species
    redox signalling
    gene expression
    oxidative stress
    abiotic stress
    physiological condition
    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:
    Using high-resolution profiling of transcripts to understand early drought stress signalling events
    Autorzy:
    Bechtold, U.
    Ott, S.
    Wild, D.
    Buchanan-Wollaston, V.
    Rand, D.
    Beynon, J.
    Smirnoff, N.
    Mullineaux, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/80355.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    crop production
    drought stress
    gene expression
    drought tolerance
    Arabidopsis
    metabolic change
    physiological change
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pomiar reakcji stresowej w warunkach laboratoryjnych – przegląd badań wykorzystujących protokoły wzbudzania stresu
    Measurement of stress response in laboratory settings – a review of studies using stress induction protocols
    Autorzy:
    Sumińska, Sylwia
    Powiązania:
    https://bibliotekanauki.pl/articles/2082522.pdf
    Data publikacji:
    2022-06-20
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    stres
    aktywność mózgu
    reakcje fizjologiczne
    laboratoryjne protokoły stresu
    wzbudzanie stresu
    aktywność sercowo-naczyniowa
    stress
    brain activity
    physiological responses
    laboratory stress protocols
    stress induction
    cardiovascular activity
    Opis:
    Stres jest jedną z głównych przyczyn problemów ze zdrowiem psychofizycznym i prowadzi do spadku efektywności pracy. Odpowiednie metody diagnozowania poziomu stresu pozwalają na rzetelną weryfikację efektywności interwencji mających na celu jego redukcję, a także ocenę różnic indywidualnych w reaktywności na stres. Celem pracy było przeprowadzenie przeglądu dostępnych badań, w których wykorzystano najczęściej stosowane protokoły wzbudzania stresu w warunkach laboratoryjnych i dokonano pomiarów stresu za pomocą parametrów fizjologicznych. Do przeglądu włączono badania wykorzystujące protokoły: MIST, MA, TSST, test Stroopa i PASAT, oraz uwzględniające pomiar aktywności mózgu i serca, stężenia kortyzolu oraz napięcia mięśniowego. Do analiz włączono prace dostępne w bazie PubMed i opublikowane w latach 2015–2021, w których badania przeprowadzono z udziałem zdrowych osób dorosłych. Analiza dostępnych badań ujawniła, że procedury wywołują zmiany aktywności autonomicznego układu nerwowego, układu sercowo-naczyniowego i mózgu. Ponadto TSST jest protokołem wykorzystywanym najczęściej do oceny poziomu stresu, różnic reaktywności na wzbudzony stres w zależności od różnic między osobami w poziomie natężenia cech osobowości bądź porównania konkretnych grup osób. W pomiarach wzbudzonego stresu zazwyczaj wykorzystuje się analizę stężenia kortyzolu w odpowiedzi na stres i zmiany w aktywności serca. Powszechnie stosowaną metodą w badaniach neuroobrazowych jest zadanie MIST. Analiza wyników badań ujawniła, że protokoły, oprócz wzbudzania typowej reakcji fizjologicznej, w przypadku niektórych osób łączą się z osłabieniem reakcji fizjologicznych na stres.
    Stress is one of the main reasons for deterioration in mental and physical health, and it leads to a decrease in work efficiency. Providing appropriate methods of diagnosing the level of stress allows for making a reliable verification of the effectiveness of stress reduction interventions and for assessing individual differences in reactivity to stress. The aim of this study was to review the available studies that use the most common stress induction protocols in laboratory settings and measure psychophysiological reactions to stress. The review included research using the following protocols: MIST, MA, TSST, Stroop Test and PASAT, and measuring brain activity, heart activity, cortisol levels and muscle tones. The analyzes included papers available in the PubMed database, published in 2015‒2021, in which studies were conducted on healthy adults. The analysis of the available studies revealed that the protocols induced changes in the activity of the autonomic nervous system, the cardiovascular system and brain activity. Moreover, TSST is a protocol that is most often used to assess the level of stress and differences in reactivity to induced stress depending on individual differences in personality traits, and to make the comparison of specific groups of people. Measurements of induced stress are usually done by analyzing the cortisol levels in response to stress and changes in heart activity. The MIST test is a commonly used method in neuroimaging studies. The analysis of the research results has revealed that the protocols, beside inducing a typical physiological response, are associated with blunting the physiological response to stress in some people.
    Źródło:
    Medycyna Pracy; 2022, 73, 3; 251-270
    0465-5893
    2353-1339
    Pojawia się w:
    Medycyna Pracy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of selected parameters of photosynthesis as herbicide stress indicators on the example of glyphosate
    Autorzy:
    Wysocki, K.
    Banaszkiewicz, T.
    Olszewski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/65181.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    physiological parameter
    photosynthesis
    herbicide
    ornamental plant
    Mexican marigold
    Tagetes erecta
    plant stress
    glyphosate
    sublethal dose
    Opis:
    This study was aimed at evaluating the effect of sublethal doses of glyphosate on physiological parameters of a common ornamental plant Mexican marigold (Tagetes erecta). The herbicide was applied in the following doses: 720 g ⋅ ha–1 (standard field dose), 144 g ⋅ ha–1, 28.8 g ⋅ ha–1, and 14.4 g ⋅ ha–1, in the form of a spraying treatment of plants in a specialist spraying chamber. The net assimilation rate and leaf greenness index were then determined. Herbicide application in the sublethal doses, i.e. below 720 g ⋅ ha–1, caused disorders in both analyzed physiological parameters of plants. The glyphosate dose of 144 g ⋅ ha–1 elicited transient disorders in the leaf greenness index. In turn, the use of the lower doses (28.8 g ⋅ ha–1 and 14.4 g ⋅ ha–1) caused a short-term increase in the net photosynthesis rate in the plants which was accompanied by a decreased value of the leaf greenness index. Study results demonstrated the effect of sublethal doses of glyphosate as a stress factor in parameters associated with the process of photosynthesis in plants.
    Źródło:
    Journal of Plant Protection Research; 2018, 58, 3
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Differential transcriptomic analysis by RNA-seq of GSNO-responsive genes between Arabidopsis roots and leaves
    Autorzy:
    Begara-Morales, J.
    Sanchez-Calvo, B.
    Luque, F.
    Laterrier, M.
    Valderrama, R.
    Mata-Perez, C.
    Padilla, M.
    Carreras, A.
    Corpas, F.
    Barroso, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/81065.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    transcriptome
    RNA sequence
    S-nitrosoglutathione
    nitric oxide
    stress condition
    physiological condition
    gene expression
    root
    leaf
    Arabidopsis
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physiological strain in the Hungarian mining industry: The impact of physical and psychological factors
    Autorzy:
    Varga, József
    Nagy, Imre
    Szirtes, László
    Pórszász, János
    Powiązania:
    https://bibliotekanauki.pl/articles/2177421.pdf
    Data publikacji:
    2016-06-30
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    work-related complex stress
    physiological strain
    health protection and promotion
    work pulse
    work-related accidents
    workplace illumination
    Opis:
    Objectives The objectives of these investigations completed on workplaces in the Hungarian mining industry were to characterize the physiological strain of workers by means of work pulse and to examine the effects of work-related psychological factors. Material and Methods Continuous heart rate (HR) recording was completed on 71 miners over a total of 794 shifts between 1987 and 1992 in mining plants of the Hungarian mining industry using a 6-channel recorder – Bioport (ZAK, Germany). The work processes were simultaneously documented by video recording along with drawing up the traditional ergonomic workday schedule. All workers passed health evaluation for fitness for work. The effects of different psychological factors (simulated danger, “instrument stress,” presence of managers, and effect of prior involvement in accidents as well as different mining technologies and work place illumination) on the work pulse were evaluated. The statistical analysis was completed using SPSS software (version 13.0, SPSS Inc., USA). Results The work-related physiological strain differed between work places with different mining technologies in groups of 12–18 workers. The work pulse was lowest in bauxite mining (ΔHR = 22±8.9 bpm) and highest in drift drilling in dead rock with electric drilling machine (ΔHR = 30±6.9 bpm). During sham alarm situation the work pulse was significantly higher than during normal activities with the same physical task (ΔHR = 36.7±4.8 bpm vs. 25.8±1.6 bpm, p < 0.001). When work was performed under different psychological stress, the work pulse was consistently higher, while improving the work place illumination decreased the physiological strain appreciably (ΔHR (median, 25–75 percentiles) = 23, 20–26 bmp vs. 28, 25–31.3 bpm, p < 0.001). Conclusions Recording the heart rate during whole-shift work along with the work conditions gives reliable results and helps isolating factors that contribute to increased strain. The results can be used to implement preventive and health promotion measures.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2016, 29, 4; 597-611
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physiological reaction of Phalaenopsis x hybridum ‘Innocence’ on Pseudococcus longispinus (Targoni Tozetti) feeding
    Fizjologiczna reakcja storczyka Phalaenopsis x hybridum ‘Innocence’ na żerowanie czerwca Pseudococcus longispinus (Targoni Tozetti)
    Autorzy:
    Kmieć, K.
    Kot, I.
    Rubinowska, K.
    Łagowska, B.
    Golan, K.
    Górska-Drabik, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/11542911.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    physiological reaction
    Phalaenopsis x hybridus
    Innocence cultivar
    ornamental plant
    Pseudococcus longispinus
    feeding
    biotic stress
    moth
    orchid
    antioxidant
    Opis:
    The physiological response of Phalaenopsis × hybridum ‘Innocence’ to biotic stress caused by Pseudococcus longispinus feeding was investigated. The condition of the cytoplasmic membranes expressed by a value of electrolyte outflow (EL) and TBARS and the activity of antioxidative system enzymes: catalase and peroxidase, and the amount of non-enzymatic antioxidant – proline, were determined. The changes in all the analyzed physiological parameters depended on the duration of the pest feeding. The outflow of electrolytes, TBARS content and catalase activity was the highest in the first period of the experiment (after 24-hour of mealybug feeding). Significant increase of peroxidase activity and proline content was noted after 7 days of insects feeding. The values of all analyzed parameters (except EL) demonstrated a decreasing tendency after 14 days of P. longispinus feeding. The observed reaction of P. hybridum ‘Innocence’ testifies to mechanisms triggered with the aim of neutralizing the effects of biotic stress and enabling the normal functioning of the cells in the orchid plants colonized by longtailed mealybug.
    Badano fizjologiczną reakcję P. × hybridum ‘Innocence’ na stres biotyczny wywołany żerowaniem P. longispinus. Określono stan błon cytoplazmatycznych wyrażony wartością wypływu elektrolitów (EL) i zawartością substancji reagujących z kwasem tiobarbiturowym (TBARS), a także aktywność enzymów systemu antyoksydacyjnego: katalazy i peroksydazy, oraz ilość nieenzymatycznego antyoksydanta – proliny. Zmiany w wartowniach wszystkich analizowanych parametrów zależały od długości żerowania szkodnika. Wartość EL, zawartość TBARS oraz aktywność katalazy były najwyższe w pierwszym terminie eksperymentu (24-godzinne żerowanie czerwca). W przypadku aktywności peroksydazy i zawartości proliny istotny wzrost notowano dopiero po 7 dniach Żerowania. Po 14 dniach od zasiedlenia storczyków wartości wszystkich analizowanych parametrów (wyjątek EL) wykazywały wyraźną tendencję spadkową. Obserwowana reakcja P. hybridum ‘Innocence’ świadczy o uruchomieniu przez rośliną mechanizmów, których zadaniem jest neutralizacja skutków stresu biotycznego i umożliwienie komórkom powrotu do normalnego funkcjonowania.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2014, 13, 3; 85-95
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physiological and biochemicals changes modulated by seeds’ priming of lentil (Lens culinaris L.) under salt stress at germination stage
    Autorzy:
    Bouallègue, A.
    Souissi, F.
    Nouairi, I.
    Souibgui, M.
    Abbes, Z.
    Mhadhbi, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/12304629.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    plant cultivation
    lentil
    Lens culinaris
    seed priming
    physiological change
    biochemical change
    antioxidant enzyme
    germination
    salinity
    salt stress
    Opis:
    Seed priming is one of the potential physiological approaches to enhance the seed germination under the salinity stress. The present study examined the role of two seed priming molecules: salicylic acid (SA) and hydrogen peroxide (H2O2), in enhancing the salt tolerance of lentil seeds at germination stage. Salinity stress caused significant decrease in germination percentage and primary root elongation. This decrease was associated with significant increase in lipid peroxidation and total lipid (TL) contents in embryonic axis. The catalase (CAT), guaiacol peroxydase (GPOX) and superoxide dismutase (SOD) activities remained unchanged or decreased significantly under the influence of salt stress, in both embryonic axis and cotyledons. Starch mobilization was not affected by the salt stress. The two priming treatments effectively alleviated the negative effects of salinity stress. SA and H2O2 applications after dose optimization resulted in a significant enhancement of germination percentage and primary root elongation. No significant changes in starch, soluble sugars contents and SOD activity were detected following SA and H2O2 treatments. Seed priming treatments triggered the activities of GPOX and CAT and caused the reduction in lipid peroxidation, especially in embryonic axis. TL content and especially the fatty acid C18:3 increased after SA applications. Better performance under salt stress of primed lentil seeds was associated with lower lipid peroxidation, and activation of enzymatic antioxidative defense system. Obtained results confirm the potential for using SA and H2O2 to improve germination and plant growth under salt stress conditions.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 5; 27-38
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphological and physiological characterization of the delta-psaL mutant of cyanobacterium Synechocystis PCC6803
    Autorzy:
    Klodawska, K.
    Kis, M.
    Malec, P.
    Kovacs, L.
    Gombos, Z.
    Strzalka, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/81106.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    Cyanoprokaryota
    prokaryotic organism
    photosynthesis
    photosystem
    thylakoid membrane
    plastoquinone
    plastocyanin
    cytochrome C
    biotic stress
    abiotic stress
    Synechocystis
    delta-psaL mutant
    physiological characteristics
    morphological characteristics
    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:
    Influence of nano-silica and humic acid on physiological characteristics of Bermuda grass (Cynodon dactylon L.) under salinity stress
    Autorzy:
    Sharifiasl, R.
    Kafi, M.
    Saidi, M.
    Kalatejari, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/12675903.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    Iran
    Bermuda grass
    Cynodon dactylon
    wild plant
    water salinity
    salinity condition
    salinity stress
    nanosilica
    humic acid
    physiological characteristics
    chlorophyll
    proline
    Opis:
    This research was conducted to evaluate the effects of water salinity and nano-silica (NS) and humic acid (HA) on Bermuda grass. The study was carried out under greenhouse and exterior space conditions in a completely randomized design with factorial arrangements. Treatments included 4 water salinity levels (0, 5, 7 and 9 dS/m) and 4 level of NS (0, 1, 2 and 3 mm/l) as well as 4 level of HA (0, 50, 100 and 150 mg/l). Results indicated a decrease in chlorophyll content, and increase in proline, malondialdehyde (MDA), catalase (CAT), superoxide dismutase (SOD) and electrolyte leakage (EL) with increasing levels of salinity. The chlorophyll content in greenhouse and exterior space also increased with increasing levels of NS and HA, while proline in two environments, with increasing levels of NS and HA decreased. EL with increasing levels of NS fluctuated, but with increasing levels of HA, it decreased in two environments. With increasing levels of NS, CAT in both environments was eventually decreased after the oscillation, but there was no particular trend in HA levels. With increasing levels of NS and HA, MDA in the greenhouse decreased and in the exterior space – it increased. Finally, by increasing levels of NS and HA, SOD did not show any change in the greenhouse condition, but in the exterior space, the SOD was decreased.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 4; 203-212
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    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:
    Test of Firefighter’s Turnout Gear in Hot and Humid Air Exposure
    Autorzy:
    Holmer, I.
    Kuklane, K.
    Gao, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/90221.pdf
    Data publikacji:
    2006
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    body temperature
    heat stress
    physiological strain
    protective clothing
    odzież ochronna
    straż pożarna
    pożar
    temperatura powietrza
    temperatura ciała
    stres
    zagrożenia zawodowe
    strażak
    Opis:
    Five students of a rescue training school cycled at 50 W for 20 min at 20 oC before walking at 5 km/hr up to 30 min in a climatic chamber at 55 oC and 30% relative humidity. 4 different types of clothing ensembles differing in terms of thickness and thermal insulation value were tested on separate days. All subjects completed 28–30 min in light clothing, but quit after 20–27 min in 3 firefighter ensembles due to a rectal temperature of 39 oC or subjective fatigue. No difference in the evolution of mean skin or rectal temperature was seen for the 3 turnout ensembles. Sweat production amounted to about 1000 g in the turnout gears of which less than 20% evaporated. It was concluded that the small differences between the turnout gears in terms of design, thickness and insulation value had no effect on the resulting heat physiological strain for the given experimental conditions.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2006, 12, 3; 297-305
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zmiany wybranych wskaźników fizjologicznych oraz ocena stresu cieplnego pod wpływem kąpieli w saunie suchej i mokrej u młodych zdrowych kobiet
    Changes in selected physiological indicators and thermal stress assessment under the influence of baths in a dry and wet sauna in young healthy women
    Autorzy:
    Pilch, Wanda
    Piotrowska, Anna
    Czerwińska-Ledwig, Olga
    Zuziak, Roxana
    Maciejczyk, Marcin
    Tota, Łukasz
    Bawelski, Marek
    Pałka, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/2162643.pdf
    Data publikacji:
    2019-12-03
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    temperatura ciała
    sauna sucha
    sauna mokra
    stres cieplny
    odczuwanie temperatury
    obciążenie fizjologiczne
    body temperature
    dry sauna
    wet sauna
    heat stress
    temperature sense
    physiological strain
    Opis:
    Wstęp Kąpiele w saunie suchej i w łaźni parowej ze względu na różny stopień obciążenia cieplnego wywołują też różne reakcje organizmu. Duża wilgotność powietrza w saunie mokrej utrudnia parowanie potu ze skóry. Ponadto dynamika pocenia się jest różna u kobiet i mężczyzn. Celem pracy była analiza zmian wskaźników fizjologicznych oraz porównanie wpływu sauny suchej i mokrej na odczucie komfortu cieplnego ocenianego w skali termicznej Bedforda, a także zbadanie wielkości obciążenia fizjologicznego (physiological strain index – PSI) i skumulowanego wskaźnika obciążeń cieplnych (cumulative heat stress index − CHSI) u młodych zdrowych kobiet. Materiał i metody W badaniach wzięło udział 10 kobiet w wieku 22−24 lat. Pomiary w obu typach sauny prowadzono w fazie folikularnej cyklu miesięcznego. Każda sesja trwała 60 min i składała się z trzech 15-minutowych ekspozycji cieplnych z 5-minutowymi przerwami na odpoczynek i schłodzenie wodą. Temperatura w saunie suchej wynosiła 91±1,2°C, w mokrej – 59±1,3°C; wilgotność powietrza, odpowiednio: 18±0,7% i 60,5±0,8%. Dokonano pomiarów masy ciała, ciśnienia skurczowego (systolic blood pressure − SBP) i rozkurczowego (diastolic blood pressure − DBP), częstości skurczów serca (heart rate − HR), temperatury rektalnej ($ \text{T}_\text{re} $) i odczuć termicznych według skali Bedforda. Wyliczono współczynniki obciążenia fizjologicznego: PSI oraz CHSI. Wyniki Po saunie suchej średnie ubytki masy ciała badanych kobiet były istotnie wyższe niż po kąpieli w saunie mokrej. Po zabiegu w saunie mokrej zaobserwowano istotnie większe przyrosty $ \text{T}_\text{re} $ oraz HR. Oba zabiegi powodowały wzrost SBP. Podczas obu kąpieli ciśnienie rozkurczowe ulegało obniżeniu. Subiektywne odczucie uciążliwości zabiegu oraz PSI i CHSI było większe podczas kąpieli w saunie mokrej. Wnioski Ekspozycja cieplna w saunie mokrej stanowi większe obciążenie dla organizmu młodych kobiet niż taki sam zabieg w saunie suchej, a zmiany badanych cech są większe od tych, które zaobserwowano u mężczyzn poddanych podobnym obciążeniom termicznym. Med. Pr. 2019;70(6):701–710
    Background There are differences between dry and wet sauna baths because of the heat load and human body’s reactions. High humidity in a wet sauna makes evaporation of sweat from the skin surface more difficult. In addition, the dynamics of sweating is different in men and women. The aim of the study was to assess changes in physiological indicators and to compare the impact of dry and wet saunas on the thermal comfort feeling, which was assessed using the Bedford thermal scale, and the physiological strain index (PSI) and the cumulative heat stress index (CHSI) in young healthy women. Material and Methods Ten women aged 22−24 years took part in the study. A session in each sauna lasted 60 min and consisted of 3 thermal 15-min exposures, in 5-min intervals for rest and cooling with water. The temperature in the dry sauna was 91±1.2°C and in the wet sauna 59±1.3°C, while the humidity was 18±0.7% and 60.5±0.8%, respectively. Body weight, systolic blood pressure (SBP), diastolic blood pressure (DBP), heart rate (HR), rectal temperature ($ \text{T}_\text{re} $) and the thermal sensation (Bedford scale) were also measured. The PSI and CHSI values were both calculated. Results The average weight loss after a dry sauna bath was significantly higher than after a wet sauna bath. Significantly higher increases in $ \text{T}_\text{re} $, as well as in HR were observed after treatment in the wet sauna, compared to the dry sauna. Both treatments resulted in an increase in SBP and a decrease in DBP. The arduousness of thermal discomfort and the levels of PSI and CHSI were skurgreater in the wet sauna bathing than in the dry sauna. Conclusions Heat exposure in the wet sauna creates a greater burden for young women’s bodies than the same dry sauna treatment, and the changes observed in the examined traits were higher than in men subjected to similar thermal loads. Med Pr. 2019;70(6):701–10
    Źródło:
    Medycyna Pracy; 2019, 70, 6; 701-710
    0465-5893
    2353-1339
    Pojawia się w:
    Medycyna Pracy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reducing the salinity impact on soilless culture of tomatoes using supplemental Ca and foliar micronutrients
    Autorzy:
    Saleh, S.
    Liu, G.
    Liu, M.
    Liu, W.
    Gruda, N.
    He, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/12688394.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    plant cultivation
    tomato
    Solanum lycopersicum
    soilless culture
    vegetative growth
    fruit quality
    yield
    calcium supplementation
    foliar application
    foliar nutrition
    micronutrient
    salinity impact
    salt stress
    physiological parameter
    Opis:
    Salt stress is known as one of the most severe abiotic factors limiting the plant production all over the world. In this study, three additives: (i) supplemental Ca (5 mmol L–1) to nutrient solution, (ii) foliar application of micronutrients (Fe, Mn and Zn at 60, 160 and 110 mg L–1, respectively), and (iii) combination of both of them were evaluated aiming to reduce the negative impact of salt stress on tomato plants cultivated in a soilless culture and improve the internal quality of fruits. The obtained results show that salinity reduced vegetative growth and physiological parameters, fruit yield and its components, and even more lowered fruit market classification of tomatoes. Salinity treatment reduced most of essential macro- and micronutrients in tomato fruit, whilst Na content was increased. Tomato productivity and fruit quality were ameliorated under saline conditions by increasing Ca into nutrient solution and applying a foliar application of micronutrients. A combination of both additives ranked the first to alleviate the adverse effects of salinity on tomatoes, followed by solo supplemental Ca into saline nutrient solution. On the other hand, the internal fruit quality of antioxidant compounds, such as vitamin C, lycopene, α-carotene, β-carotene and lutein as well as acidity, total soluble solid and dry matter percent, were increased under saline conditions.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 3; 187-200
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of fulvic and humic organic acids and calcium on growth and chlorophyll content of tree species grown under salt stress
    Autorzy:
    Marosz, A
    Powiązania:
    https://bibliotekanauki.pl/articles/41691.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    tree species
    chlorophyll content
    salinity stress
    ornamental tree
    fulvic organic acid
    humic organic acid
    calcium
    growth
    salt
    soil erosion
    environment pollution
    mineral nutrition
    plant
    physiological process
    Opis:
    The use of salt to malt ice has definite effects on the environment. Some of these environmental effects are: soil erosion, environmental pollution, changes in mineral nutrition or general destruction of the physiological processes of plants. This use of salt has a negative impact on roadside vegetation and sustainability. The objective of the presented study was to investigate the effects of fulvic and humic organic acids as well as the calcium on growth and chlorophyll content of seven tree species grown under salt stress. Two year old seedlings of – Acer campestre, Aer platanoides, Acer pseudoplatanus, Acer tataricum ssp. ginnala, Ginkgo biloba, Platanus ×hispanica 'Acerifolia' and Tilia cordata were planted to plastic pots (2 dm3 vol). They were planted outdoors in a growing medium compound which had high sphagnum peat, grainy sand and composted pine bark. Salinity stress was maintained by irrigating plants with tap water containing 3.3 g NaCl/L H2O. Different organic fertilizers were used to redce the risk of nutritional stress caused by salinity. Salinity in the growing medium limited the growth of two maple species and littleleaf linden. In other species such A. campestre, A. tataricum ssp. ginnala, G. biloba there were no significant differences when compared to the control group of plants. Severe leaf damage was observed on A. paltanoides where leaf burning was seen on up to 30%of the leaf blade surface. The response to salinity of other species like A. pseudoplatanus, A. tataricum ssp. ginnala, and T. cordata was less evident. Humic organic acids applied alone to the growing medium improved the growth of all the maple species when compared to the control group. A calcium had the best effect on the growth of all tested trees except A. tataricum ssp. ginnala and G. biloba. The chlorophyll content index (CCI) differed according to the growing medium treatment and the species. The total CCI ranged from 9.62 for the control plants P. ×hispanica 'Acerifolia' to 52.64 for G. biloba which had been treated with a calcium. Application of organic fertilizers to the salt treated growing medium increased the CCI in many species.
    Źródło:
    Dendrobiology; 2009, 62; 47-53
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The accumulation of SA- and JA-signaling pathways in the response of Glycine max cv. “Nam Dan” to infestation by Aphis craccivora
    Autorzy:
    Tran, N.T.
    Tran, T.T.H.
    Do, N.D.
    Mai, V.C.
    Powiązania:
    https://bibliotekanauki.pl/articles/66714.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    phytohormone
    signal molecule
    physiological process
    plant
    environmental stress
    aphid
    plant protection
    Glycine max
    infestation
    Aphis craccivora
    cowpea aphid
    black legume aphid zob.cowpea aphid
    true bug
    defense response
    jasmonic acid
    salicylic acid
    Opis:
    Phytohormones function as signal molecules that regulate physiological processes to protect plants from environmental stresses, including aphids’ attack. We studied the pattern within the defense mechanisms of soybean [Glycine max (L.) Merr. cv. “Nam Dan”] regarding the signaling pathways of salicylic acid (SA), and jasmonic acid (JA) in response to cowpea aphid (Aphis craccivora Koch). With infestation by cowpea aphid, SA was the first to accumulate and reached high levels 24 hours post-infestation (hpi). An accumulation of SA in the early response of soybean probably triggers inducible specific defense reactions. Following SA, JA was later induced and continuously increased to high levels 96 hpi. An accumulation of JA in the later response may be a critical step in the signaling of the downstream defense cascade. In addition, phenylalanine ammonia-lyase (PAL, EC 4.3.1.24) and benzoic acid 2-hydroylase (BA2H), enzymes involved in the biosynthesis of SA, and lipoxygenase (LOX, EC 1.13.11.12), an important enzyme in the JA biosynthesis pathway, were also induced by cowpea aphid. The changes in the enzymatic activity of PAL, BA2H and LOX, and expression of gene encoding PAL were closely associated with the accumulation of endogenous SA and JA, respectively. The variations in the levels of these defense-related compounds were strongly connected with density and the duration of cowpea aphid infestation. Different accumulations of SA- and JA-signaling pathways may contribute to a coordinated regulation leading to the formation of resistant lines in the defense mechanisms of G. max cv. “Nam Dan” against A. craccivora.
    Źródło:
    Journal of Plant Protection Research; 2017, 57, 4
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Przyczyny masowego zamierania drzewostanów dębowych
    Causes of oak stand decline
    Autorzy:
    Oszako, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1016238.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    metabolizm roslin
    czynniki fizjologiczne
    szkodniki roslin
    lesnictwo
    Quercus
    zamieranie lasow
    drzewostany debowe
    czynniki chorobotworcze
    grzyby
    dab
    stres srodowiskowy
    szkodniki wtorne
    drzewa lesne
    forest dieback
    environmental stress
    physiological change
    metabolism
    fungal infection
    secondary pest
    Opis:
    Agents causing damage to plant organisms like drought, folivore feeding, fungal pathogens, ground frosts have no significant effect on tree mortality if they occur individually, however their concurrent occurrence may lead to mass dieback of trees on a local scale. Changes in cell biochemistry of trees under the impact of stress factors enable development of fungal infections or facilitate insect attacks. This study presents examples of interactions between physiological changes (e.g. in production of enzymes, phenolic compounds, etc.) determining host plant resistance and pathogen or pest responses to these changes.
    Źródło:
    Sylwan; 2007, 151, 06; 62-72
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reakcje fizjologiczne i behawioralno-poznawcze dzieci w młodszym wieku szkolnym w sytuacjach stresowych
    Physiological and behavioural – cognitive reactions of younger school-age children in stressful situations
    Autorzy:
    Cywińska, Małgorzata
    Powiązania:
    https://bibliotekanauki.pl/articles/2098489.pdf
    Data publikacji:
    2021-12-31
    Wydawca:
    Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
    Tematy:
    stres
    negatywne emocje
    reakcje fizjologiczne
    reakcje behawioralnopoznawcze
    model reakcji na stres Janusza Reykowskiego
    transakcyjna teoria stresu Richarda S. Lazarusa i Susan Folkman
    dzieci w młodszym wieku szkolnym
    stress
    negative emotions
    physiological reactions
    behavioural-cognitive reactions
    Janusz Reykowski's model of reactions to stress
    transactional theory of stress and coping by Richard S. Lazarus and Susan Folkman
    children at younger school age
    Opis:
    Stres i związane z nim negatywne emocje wywołują określone reakcje fizjologiczne i behawioralno-poznawcze u jednostek, rzutujące na ich funkcjonowanie w różnych obszarach życia. W artykule - na podstawie badań własnych  analiza tychże reakcji została odniesiona do dzieci w młodszym wieku szkolnym: uczniów trzecich klas szkoły podstawowej, ich matek oraz nauczycieli i wkomponowana w kontekst środowiska rodzinnego, szkolnego i rówieśniczego wspomnianych dzieci.
    Stress and negative emotions connected with it evoke specific physiological and behavioural-cognitive reactions in individuals, which affect their functioning in various areas of life. The author studied and analyzed these reactions with respect to children of younger school age - third graders of primary school, their mothers and teachers. The analysis presented in the article is integrated into the context of family, school and peer environment of the children in question.
    Źródło:
    Forum Pedagogiczne; 2021, 11, 2; 113-129
    2083-6325
    Pojawia się w:
    Forum Pedagogiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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