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Wyświetlanie 1-11 z 11
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:
Physiology of strength training as a form of prophylaxis and counteraction against civilization threats
Autorzy:
Tadeusz, Ambroży,
Dariusz, Mucha,
Mateusz, Nowak,
Dorota, Ambroży,
Teresa, Mucha,
Powiązania:
https://bibliotekanauki.pl/articles/891187.pdf
Data publikacji:
2018-08-20
Wydawca:
Wyższa Szkoła Bezpieczeństwa Publicznego i Indywidualnego Apeiron w Krakowie
Tematy:
strength training. health prevention
physiological parameters
Opis:
The aim of this paper was to evaluate the scope of influence a modified circuit training of endurance and strength character, carried out in line with an original programme, on the selected physiological parameters. 30 volunteers who train in fitness clubs in Kraków on an everyday basis were selected by means of purposeful selection to participate in the research. This group was divided into two subgroups. One of them used an experimental programme of circuit training, the other took part in the same training programmes they had used so far. After six weeks the two groups were subjected to research. Heart rate and blood lactate levels were measured. Heart rate monitors were used to measure heart rate. Research results show that the proposed training programme is carried out at a high intensity level, which is indicated by the recorded heart rate and blood lactate levels. The research programme carried out with the use of the circuit training positively influences fundamental physiological parameters; average and maximal heart rate frequency were lowered, energy expenditure in the course of the training was lowered; blood lactate levels after the training were reduced as well and post-exercise restitution was increased. The proposed form of training can be an example of physical activity of significant health-oriented advantages.
Źródło:
Kultura Bezpieczeństwa. Nauka – Praktyka – Refleksje; 2015, 17; 212-231
2299-4033
Pojawia się w:
Kultura Bezpieczeństwa. Nauka – Praktyka – Refleksje
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ drgań niskoczęstotliwościowych na wybrane parametry fizjologiczne
Changes of selected physiological parameters under low frequency vibration
Autorzy:
Damijan, Z.
Powiązania:
https://bibliotekanauki.pl/articles/328276.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
drgania niskoczęstotliwościowe
parametry fizjologiczne
low frequency vibration
physiological parameters
Opis:
Praca przedstawia badania i analizy wpływu drgań niskoczęstotliwościowych na wybrane parametry fizjologiczne organizmu człowieka. Z uwagi na nieliczne doniesienia literaturowe o możliwości stosowania drgań niskoczęstotliwościowych w terapii, przeprowadzono badania mające na celu sprawdzenie jak ekspozycja drganiami wpływa na zmiany wytypowanych parametrów fizjologicznych.
The aim of the work was the re-search and analysis con-cerning the influence of low-fre-quency vibra-tions on chosen func-tional parame-ters of human body. Due to the fact, that there is not much literature on the possibility of using low-fre-quency vibrations in therapy. The experi-ment carried what are the changes of chosen physiologi-cal parameters.
Źródło:
Diagnostyka; 2005, 35; 101-104
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Variable-Intensity Running Training and Circuit Training on Selected Physiological Parameters of Soccer Players
Autorzy:
Ambroży, Tadeusz
Nowak, Mateusz
Omorczyk, Jarosław
Wrześniewski, Krzysztof
Ozimek, Mariusz
Duda, Henryk
Mucha, Dawid
Ceranowicz, Piotr
Pałka, Tomasz
Stanula, Arkadiusz
Mucha, Dariusz
Powiązania:
https://bibliotekanauki.pl/articles/1030576.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
circuit training
physiological parameters
soccer players
variable-intensity running training
Opis:
Proper planning of the training process based on individual LT and AT metabolic thresholds is essential to improve athletic performance. Development of endurance in soccer players is mainly based on continuous runs and variable-intensity runs, supplemented with strength conditioning and sport-specific training. The aim of the study was to analyse selected parameters of physical capacity of soccer players after 8-week variable-intensity running training and circuit training. The experiment was carried out in a group of 34 soccer players aged 21 to 26 years. The athletes were divided into two groups: 17 people in the experimental group and 17 people in the control group. The experimental group was involved in 30-minute tempo runs two times a week for 8 weeks with variable intensity at AT. In the same period, the control group performed two 60-minute continuous runs at the intensity of 70-75%HRmax. The determination of metabolic thresholds used two indirect tests: the multistage shuttle run test (beep test) and maximal lactate steady state test (MLSS) with author's own modification. In order to evaluate maximal heart rate (HRmax), the research procedure was started from the beep test (distance: 20 m). The speed at the first level was 8.5 km/h and increased with each level by 0.5 km/h. Training of the experimental group where variable exercise intensity was used caused a statistically significant increase in HRmax (by 1.9%) and blood lactate levels at the AT (by 20.5%). The training in the experimental group led to the statistically significant (p < 0.05) increase in the parameters of the following variables: HRmax (by 1.9%); lactate level (by 7.85); HR at the AT (by 1,9%); lactate level at the AT (by 20.5%). The assumptions of the experimental training did not cause statistically significant changes in pretest vs. posttest HRmax and blood lactate levels for the LT. Endurance training with high intensity is more effective in soccer players compared to training with moderate intensity. Development of special endurance in soccer should also assume the intensity and method of working similar to the method used during sport competition.
Źródło:
Central European Journal of Sport Sciences and Medicine; 2018, 23, 3; 25-35
2300-9705
2353-2807
Pojawia się w:
Central European Journal of Sport Sciences and Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ drgań wibracyjnych o niskiej częstotliwości na wybrane parametry fizjologiczne sportowców
The effect of low frequency vibration on selected physiological parameters in athletes
Autorzy:
Pośpiech, S.
Czapkowicz-Pośpiech, R.
Barucha, P.
Błaszczyk, J.
Powiązania:
https://bibliotekanauki.pl/articles/99293.pdf
Data publikacji:
2016
Wydawca:
Politechnika Śląska. Katedra Biomechatroniki
Tematy:
drgania wibracyjne niskoczęstotliwościowe
parametry fizjologiczne
low frequency vibration
physiological parameters
Opis:
Praca przedstawia wpływ krótkotrwałych drgań ogólnych o częstotliwości 3.5 Hz na wybrane parametry fizjologiczne sportowców. W badaniu zastosowano platformę wibracyjną generującą drgania harmoniczne o częstotliwości biegu człowieka-3.5 Hz i wzrastającej amplitudzie od 4 do 5,5 mm. W pracy założono, że stanie na platformie w pozycji swobodnej bez wykonywania żadnych dodatkowych ćwiczeń stanowi dla organizmu człowieka trening fizyczny oraz że platforma wibracyjna jest urządzeniem, które odtwarza bodźce mechaniczne występujące w czasie biegu lub szybkiego marszu.
The study is focused on the effect of a short-term general 3.5 Hz frequency vibration on physiological parameters in athletes. The study used a vibration platform designed for the requirements of the experiment, generating harmonic vibration with the frequency of a human run-3.5 Hz, and the amplitude increased from 4 to 5 millimeters. The study assumed that free standing on the platform with no other physical exercises is an exercise for the human organism and that a vibration platform is a device that reproduces mechanical stimuli associated with running or a vigorous march.
Źródło:
Aktualne Problemy Biomechaniki; 2016, 10; 49-56
1898-763X
Pojawia się w:
Aktualne Problemy Biomechaniki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmiany wybranych parametrów biochemicznych i fizjologiczych organizmu po ekspozycji drganiami niskoczęstotliwościowymi
Changes of selected biochemical and fizjological under low frequency vibration
Autorzy:
Damijan, Z.
Powiązania:
https://bibliotekanauki.pl/articles/329058.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
drgania niskoczęstotliwościowe
ekspozycja drganiami
parametry biochemiczne
parametry fizjologiczne
low frequency vibration
exposure under vibration
biochemical parameters
physiological parameters
Opis:
Badania wpływu drgań niskoczęstotliwościowych odbyły się w Instytucie Biofizjologii Człowieka AWF w Krakowie. Eksperyment obejmował dziewiętnaście 20-minu-towych ekspozycji drganiami (nazywanych dalej treningami), w kolejnych dniach roboczych o stałej porze dnia dla każdej osoby. W trakcie każdego tre-ningu rejestrowano wytypowane parametry fizjologiczne przed i po tre-ningu, prowadzono stały monitoring pulsu HR i saturacji SpO2. Przed eksperymentem i po jego zakończeniu przeprowadzono badania biochemiczne.
The effects of infrasound exposure were investigated at the Institute of Human Bio-physiology of the Academy of Physical Education in Kraków. The research program involved nineteen 20 min vibrations exposure sessions in the subsequent working days, at the same time of day for each participant. During each session selected physiological parameters were registered before and after the exposure, the heart beat rate HR and saturation levels SpO2 were monitored on the constant ba-sis. The research program was supported by the biochemical analysis before and after the experi-ments.
Źródło:
Diagnostyka; 2005, 33; 29-34
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of magnetic fields and fertilizers on grass and onion growth on technogenic soils
Autorzy:
Vasilyeva, Maria
Kovshov, Stanislav
Zambrano, Johnny
Zhemchuzhnikov, Maxim
Powiązania:
https://bibliotekanauki.pl/articles/1844328.pdf
Data publikacji:
2021
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
alternating magnetic field
biochar
bioefficiency
biohumus
constant magnetic field
fertilization
physiological parameters of plants
technogenic soils
Opis:
The article deals with effect the use of organic (biohumus) and mineral (biochar) fertilizers based on the products of chicken vital activity on changing the fertility of technogenic sod-podzolic soils exposed to constant and unstable magnetic fields. The germination and growth dynamics of grasses and onions were investigated. The rational rate of introduction of the studied fertilizers into the technogenic soil is determined. Running (RMF) and direct (DMF) magnetic fields were applied in two ways: with fertilizers added and without fertilizers added. It has been established that the effect of preliminary magnetization of technogenic soil has a significant effect on lawn grass germination and the length of onion feathers, which are more than twice the height when exposed to the RMF, as compared with DMF. The effect of RMF on grass germination was also twice as high for DMF, when fertilizers were added. The DMF magnetization and biohumus helps to increase the grass sprout height by 10–20%. Onion sprouts were higher in two cases: DMF and biohumus; RMF and biochar. The influence of the factor of fertilizer type has a significant effect in 30–40% of cases, whilst at a spread rate of more than 5%, significant chemical activity of biochar negatively affects the germination of both grass and onion.
Źródło:
Journal of Water and Land Development; 2021, 49; 55-62
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Maksymalne parametry fizjologiczne serca i mięśni kobiet oraz mężczyzn podczas przejścia na emeryturę
Maximum physiological parameters of the heart and muscles of women and men during the process of retirement
Autorzy:
Szubert, Józef
Szubert, Sławomir
Rydz, Sylwia
Michałowska-Wieczorek, Izabella
Szymańska-Paszczuk, Alicja
Ziółkowski, Włodzimierz
Wieczorek, Wojciech
Szubert, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/2216442.pdf
Data publikacji:
2018-02-09
Wydawca:
Akademia Humanistyczno-Ekonomiczna w Łodzi
Tematy:
przejście na emeryturę
maksymalne parametry fizjologiczne serca i mięśni
retirement process
maximum physiological parameters of heart and muscles
Opis:
Starzenie się jest procesem fizjologicznym, który przejawia się wraz z wiekiem. Charakteryzuje się stałym zmniejszaniem maksymalnych parametrów fizjologicznych oraz mniejszą zdolnością do regeneracji i adaptacji. Wyróżnia się trzy typy starzenia się: 1) zdrowy, 2) zwykły 3) chorobowy. Pierwsze dwa typy starzenia zalicza się do fizjologicznego starzenia się, które obejmują około 65% kobiet i mężczyzn. Takie starzenie jest badane przez autorów pracy przy wyznaczaniu maksymalnych parametrów fizjologicznych serca i mięśni kobiet oraz mężczyzn podczas przejścia na emeryturę. Obecnie osoby, które osiągają wiek emerytalny i starzeją się fizjologicznie w większości nie są niedołężnymi starcami, a wręcz przeciwnie- najczęściej funkcjonują normalnie. Celem pracy jest wyznaczenie parametrów fizjologicznych serca i mięśni kobiet oraz mężczyzn o przeciętnej wydolności fizycznej w wieku emerytalnym – 67 lat oraz dla kobiet w wieku 60 lat i mężczyzn w wieku 65 lat. W przypadku kobiet największy ubytek wartości parametrów fizjologicznych przyjmuje maksymalna siła mięśni (F max), a najmniejszy objętość wyrzutowa serca (SVmax). Średni ubytek maksymalnych parametrów fizjologicznych kobiet wynosi: dla wieku 60 lat → (-13,45%), dla wieku 67 lat → (-18,15%), a dla wieku 75 lat → (-24,4%). W przypadku dla mężczyzn największy ubytek wartości parametrów fizjologicznych przyjmuje pułap tlenowy (Vo 2 max), a najmniejszy różnica tętniczo-żylna wysycenia krwi tlenem (AVDmax). Średni ubytek maksymalnych parametrów fizjologicznych mężczyzn wynosi: dla wieku 65 lat → (-18,2%), dla wieku 67 lat → (-19,7%), a dla wieku 75 lat → (-26,35%). Wyznaczone maksymalne parametry fizjologiczne serca i mięśni kobiet oraz mężczyzn pozwalają na dokładną, obiektywną i ilościową ocenę stanu zdrowia odchodzących na emeryturę.
Ageing is a physiological process that manifests itself with age. It is characterized by the constant reduction of maximal physiological parameters and by lower levels of regeneration and adaptability. There are three types of ageing: healthy, normal and morbid. The first two types of ageing are classified as physiological ageing and include about 65% of men and women. Such ageing is investigated by the authors of the paper in determining the maximum physiological parameters of the heart and muscles of women and men during their retirement. At present, people who reach retirement age and age physiologically are not infirm old people; and on the contrary, they usually function normally. The purpose of the study is to determine the physiological parameters of the heart and muscles of women and men with average physical fitness at retirement age – 67 years old, as well as for 60-year-old women and for men 65 years of age. The determined maximum physiological parameters of the heart and muscles of women and men allow for accurate, objective and quantitative assessment of the health condition of those in the process of retirement.
Źródło:
Kultura i Wychowanie; 2017, 12; 23-43
2544-9427
2083-2923
Pojawia się w:
Kultura i Wychowanie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of the physiological condition of Salvinia natans L. exposed to copper (II) ions
Autorzy:
Hołtra, A.
Zamorska-Wojdyła, D.
Powiązania:
https://bibliotekanauki.pl/articles/207308.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
Salvinia natans
bioremediation
copper
metal ions
metals
aquatic environments
culture medium
physiological condition
physiological parameters
phytoremediation
salwinia pływająca
bioremediacja
miedź
jony metali
fizjologia
środowisko wodne
pożywka hodowlana
stan fizjologiczny
parametry fizjologiczne
fitoremediacja
Opis:
Salvinia natans L. is a known bioaccumulator of metal ions from the aquatic environment. Exposure of plants to prolonged impact of toxins along with a large dose of the metal affects the physiological condition of the plants. The changes occurring in the plants in the phytoremediation process in contaminated medium culture of 5, 10, 15 and 20 mg Cu/dm3 show two basic physiological parameters: the assimilation pigment content (chlorophyll a and b) responsible for the production of energy in the process of photosynthesis, and the total protein level as the main constituent of the plant. Conducted studies confirmed a negative effect of high concentrations of copper(II) on Salvinia natans L. plants which in these conditions are capable to bioaccumulate metal from each contaminated culture medium.
Źródło:
Environment Protection Engineering; 2015, 41, 3; 147-158
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physiological and biochemical parameters among a population of bakers exposed to environmental heat
Autorzy:
Al-Otaibi, Sultan T.
Powiązania:
https://bibliotekanauki.pl/articles/2084914.pdf
Data publikacji:
2022-06-08
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
physiological
parameters
heart rate
biochemical
bakers
heat
Opis:
ObjectivesThe aim of this study was to determine the physiological and biochemical changes among bakers, induced by heat exposure at the workplace.Material and MethodsInformation was collected by means of a self-administered questionnaire. Vital signs were measured and recorded by a trained nurse before and after each work shift. A venous blood sample was drawn at the end of each work shift. The mean wet-bulb globe temperature (WBGT) index in the bakeries and offices was measured.ResultsThis was a cross-sectional study involving 137 bakers working in 20 bakeries, and 107 control subjects comparable in terms of age, race, marital status, years of service, income, and cigarette smoking. There was a significant weight loss and increase in the respiratory rate, the heart rate, and oral body temperature among the bakers compared to the control group. Sodium levels were significantly lower, while blood urea nitrogen levels were significantly higher, among the bakers than in the control group. There were unfavorably hot working conditions in the bakeries: the WBGT index in the bakeries was 37.4°C while the average WBGT for the offices was 25.5°C.ConclusionsThe changes in the physiological and biochemical parameters among the bakers were found to be associated with exposure to high environmental heat in the bakeries, as judged by the WBGT index. Preventive measures should be aimed at reducing the adverse effects of heat exposure among bakers and should be directed towards the man-machine-environment triad.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2022, 35, 3; 265-272
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comprehensive method of recording psycho-physiological and environmental signals during flight
Autorzy:
Szczurek, Z.
Stankiewicz, A.
Brandt, J.
Michnik, A.
Nowak, G.
Różanowski, K.
Skibniewski, F.
Powiązania:
https://bibliotekanauki.pl/articles/333638.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
rejestrator środowiska
parametry lotu
EKG
physiological recorder
environmental recorder
flight parameters
ECG
NIBP
EMG
SPO2
GPS
GPRS
Wi-Fi
Opis:
In 2011 ITAM has completed work conducted with WIML's representatives to develop a comprehensive method of psycho-physiological pilots' signals and external environmental parameters during a test flight. It has been assumed that data will be collected "off line" during a training flight and stored in the monitoring module's memory, and after the flight it will be loaded to the operator's station system at the airport. The "On line" transmission of chosen parameters directly into a database and ongoing observation have also been anticipated. One of the main assumptions for the system was its independent work from the avionics systems of aircraft used for training. This has made it possible to use the system regardless the type of aircraft equipment and without having the necessity to stringent criteria of aviation hardware acceptance. The recording system has been designed as a distributed system consists of modules carried by the pilot, those placed permanently in the cockpit of the plane, a station for test flight preparation and reading recorded data, as well as a database system accessible via the Internet. Communication between the various system modules is to employ various transmission systems, wired as well as wireless. For safety reasons wireless communication between modules in the cockpit was not used in flight, with the exception of GSM transmission used to transfer selected data directly to the Central Acquisition System.
Źródło:
Journal of Medical Informatics & Technologies; 2012, 21; 35-41
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
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