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Wyświetlanie 1-15 z 93
Tytuł:
Transition probability model in cell cycle investigations
Autorzy:
Tyrcha, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/748742.pdf
Data publikacji:
1987
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Physiology, biochemistry
Statistics
Opis:
.
A transition probability model for sister cells is formalized. Assumptions are divided into three parts: assumptions based on empirical facts, general theoretical assumptions and detailed theoretical assumptions. The last group is considered in the biological literature is shown to be inconsistent.
Źródło:
Mathematica Applicanda; 1987, 16, 30
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of anaerobic endurance based on selected biochemical parameters in 400 m/400 m hurdles male athletes
Autorzy:
Stolecka-Warzecha, Anna
Kaczmarczyk, Tomasz
Żebrowska, Aleksandra
Powiązania:
https://bibliotekanauki.pl/articles/1054987.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
anaerobic endurance
athletics
exercise physiology
Opis:
The ongoing development of the modern society may also be easily noticed in sports. Currently, to be able to compete at the highest level at major sporting events, it is essential to conduct scientific research to estimate the individual potential and skill level of an athlete. The aim of this study was to assess the anaerobic endurance in men competing in the running events of 400 m/400 m hurdles based on the estimation of maximum power, as well as selected biochemical and physiological parameters measured in a cardiac stress test at a supramaximal intensity. Seven athletes participated in the study and were subjected to a modified version of the Wingate test (Bar-Or, Dotan, Inbar, 1997; Bar-Or, Inbar, Skinder, 1996) which involved performing three runs of a 12‑second endurance test on a cycloergometer at short intervals. This modification of the test allowed a more precise observation and a better understanding of the physiological and biochemical changes that decrease the efficiency as a result of repeated physical effort, which may significantly affect the assessment of the preparation of an athlete, and thus the assessment of the training process. The most significant changes in the course of the conducted study were observed in the values of the following biochemical parameters: glucose levels, acid–base balance of the blood and lactate levels.
Źródło:
Central European Journal of Sport Sciences and Medicine; 2016, 14, 2; 101 - 110
2300-9705
2353-2807
Pojawia się w:
Central European Journal of Sport Sciences and Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Morphological and Physiological Appearance of Two Vegetable Plants Due to Lead Exposure
Autorzy:
Lestari, Mahayu Woro
Rosyidah, Anis
Powiązania:
https://bibliotekanauki.pl/articles/2124397.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
kale
lead
morphology
physiology
spinach
Opis:
This research aimed to determine the effect of different concentrations of Lead (Pb) on the morphology of kale and spinach plants. The process involved planting kale and spinach seeds in tubs and transferring them to polybags with planting media in the form of soil and sand at a ratio of 4:1 after strong roots were developed. It is important to note that the media were analyzed to ensure the Pb content in the soil was below the threshold before planting. Pb was later provided 1 week before planting in the form of PbNO3 in the media at a dose of 1 and 2 g/polybag and mixed effectively to ensure even distribution, while the sample used as the control was not given any Pb. The transplanting process was conducted after the plants were 18 days old in the nursery and the initial observations at 9 DAT showed that the kale leaves were darker with a score of 3 than spinach with a score of 1, but the spinach leaves became darker in color with score 3 as the age of the plants increased. Moreover, the kale changed to a lighter color with a score of 2 from the 9th day of observation after transplanting, while spinach requires 15 DAT to become score 2 until the end of the observation. It should be pointed out that both plants showed morphological changes due to the existence of the Pb but their base leaves did not reflect any effect. The kale leaf tip became blunt, while the spinach leaf tip was not affected and both plants were discovered to have longer roots and more root hairs in the control compared to the treatments. Furthermore, the total chlorophyll of spinach in the control was higher than kale but observed to reduce as the concentration of Pb increased in the treatments. The morphology and physiology of spinach and kale plants changed due to the Pb exposure with the spinach was discovered to be more sensitive as indicated by more visible morphological damage to its leaves at the end of the observation. It is possible to use the morphology of spinach and kale to detect Pb-contaminated land.
Źródło:
Journal of Ecological Engineering; 2022, 23, 6; 213--222
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of cooper, zinc and selenium on skin condition
Autorzy:
Kulik, Anna
Powiązania:
https://bibliotekanauki.pl/articles/32879179.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Medycyny i Techniki Hiperbarycznej
Tematy:
copper
zinc
selenium
skin
skin health
physiology
Opis:
Trace elements are essential for the maintenance of the homeostasis of the body, and condition the proper functioning of the human organism. Micronutrients influence a number of metabolic processes in the dermis and epidermis. An excess or deficiency of trace elements may represent a potential threat to human health with implications for skin condition. This study reviews the literature on the effects of copper, zinc and selenium on skin condition.
Źródło:
Polish Hyperbaric Research; 2023, 2(83); 23-30
1734-7009
2084-0535
Pojawia się w:
Polish Hyperbaric Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Salinity stress effects on the growth, morphological, physiological, and biochemical properties of Melia (Melia dubia Cav.) plant
Autorzy:
Kumar, R.
Banyal, R.
Singh, A.
Yadav, R.K.
Sharma, P.C.
Powiązania:
https://bibliotekanauki.pl/articles/2078273.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Melia
salt stress
growth
physiology
phenology
biochemical
Opis:
Salinity stress severely affects the growth, physiological and developmental processes in plant species. Melia dubia is an ecologically and economically important tree species of the Indian subcontinent. However, systematic information with respect to the species salt tolerance potential is completely lacking. Under salt stress conditions, determining suitable soil EC range is required for the better survival, growth and productivity of the tree species. In present study, we investigated the effects of different soil salinity (EC 4, 8, and 12) levels on the ion homeostasis, physio-biochemistry, morphology, and growth of M. dubia plant. Results revealed that increase in soil salinity causes higher Na+ content and Na+/K+ ratio, while lower K+ content, in the leaf tissues of M. dubia. The physiological processes such as the photosynthetic rate, stomatal conductance, internal CO2 concentration, and transpiration rate were adversely affected with the increased salt stress levels. Morphological parameters, such as internodal length, petiole length, leaf length, and leaf width also decreased (P<0.05) under saline stress conditions. Results further indicat- ed that salinity levels significantly (P<0.05) affected the M. dubia growth, and the growth rate was found optimum upto 8 EC, thereafter it slightly decreased with the increased salt stress to 12 EC. Our findings showed that increased salinity stress causes significant changes in the physiological, morphological, and growth pattern of M. dubia. Therefore, based on present experiment, we found M. dubia suitable for the salt affected soils of EC 8 with optimum growth rate and at EC 12 with the moderate (20–25%) growth reduction.
Źródło:
Dendrobiology; 2021, 86; 56-68
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thérèse Raquin d’Émile Zola: la notion de tempérament entre l’héritage antique et l’apport de la physiologie du XIXe siècle
Emile Zola’s Therese Raquin: the concept of temperament between the antique tradition and the acquirements of the 19th century physiology
Autorzy:
Kaczmarek-Wiśniewska, Anna
Powiązania:
https://bibliotekanauki.pl/articles/1048029.pdf
Data publikacji:
2020-12-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
Zola
Therese Raquin
physiology
temperament
sanguine
melancholic
Opis:
Therese Raquin, Zola’s first important work, is based on the modern version of the old physiological theory of “temperaments”, e.g. the combination of four cardinal “humours” that determine a man’s physical and mental constitution. Through the story of two murderers, an adulterous woman and her lover who kill the woman’s husband, the author shows the mutual influence of two temperaments considered in the 19th century as more important than all the others: sanguine and melancholic (or nervous). The novel intends to “verify” a theory dealing with the consequences of each type of temperament for people’s behaviour, their relationships and their internal life.
Źródło:
Studia Romanica Posnaniensia; 2020, 47, 4; 91-100
0137-2475
2084-4158
Pojawia się w:
Studia Romanica Posnaniensia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Emotion monitoring – verification of physiological characteristics measurement procedures
Autorzy:
Landowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/220577.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
affective computing
emotion recognition
physiology
motion artifacts
sensor location
Opis:
This paper concerns measurement procedures on an emotion monitoring stand designed for tracking human emotions in the Human-Computer Interaction with physiological characteristics. The paper addresses the key problem of physiological measurements being disturbed by a motion typical for human-computer interaction such as keyboard typing or mouse movements. An original experiment is described, that aimed at practical evaluation of measurement procedures performed at the emotion monitoring stand constructed at GUT. Different locations of sensors were considered and evaluated for suitability and measurement precision in the Human- Computer Interaction monitoring. Alternative locations (ear lobes and forearms) for skin conductance, blood volume pulse and temperature sensors were proposed and verified. Alternative locations proved correlation with traditional locations as well as lower sensitiveness to movements like typing or mouse moving, therefore they can make a better solution for monitoring the Human-Computer Interaction.
Źródło:
Metrology and Measurement Systems; 2014, 21, 4; 719-732
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cabanis: między medycyną, rewolucją i filozofią
Cabanis: between medicine, revolution and philosophy
Autorzy:
Chomiszczak, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/1041159.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
brain
physiology
sensibility
mind
consciousness
intelligence
morality
materialism
Opis:
The article is concerned with quite forgotten character and work of Pierre Jean Georges Cabanis, a physician and philosopher, but also a strong supporter of the French Revolution from the turn of the 18th and 19th centuries. His main scientific opus was the dissertation On the relations between the physical and moral aspects of man (Rapports du physique et du moral de l’homme) first published in 1802 and then repeatedly resumed in the 19th century, but virtually unknown in Poland. His medical points of view originally corresponded with materialistic philosophy; however, they also took into account the role of the spiritual and mental aspects of a human – this “biological, thinking mechanism”, as Cabanis thought. An important role in his book was played by theories related to sensualism. Using modern terms, Cabanis created something like physiological psychology. According to him, the body, or more precisely its organs, take part in the creation of human thoughts which seem to be only the physiological result of brain perception. This classic work was often invoked by successive generations of doctors and thinkers; it even appeared in artistic prose. Cabanis himself has had a fixed position in research and scientific studies for over two centuries.
Źródło:
Poznańskie Studia Polonistyczne. Seria Literacka; 2018, 34; 223-243
1233-8680
2450-4947
Pojawia się w:
Poznańskie Studia Polonistyczne. Seria Literacka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Expression of GPD1 and SIP18 genes during rehydration in active dry industrial Saccharomyces cerevisiae cider-making yeast strains (ADY)
Autorzy:
Goncerzewicz, Anna
Kamińska-Wojteczek, Karolina
Młynarczyk, Izabella
Misiewicz, Anna
Powiązania:
https://bibliotekanauki.pl/articles/1038648.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
gene expression
yeasts
wine
fermentation biotechnology
yeast physiology
Opis:
In this study we determined the influence of different sugar concentration in media, time of rehydration and type of strain on relative expression level of GPD1 and SIP18 genes of active dry cider-making yeast strains, followed by the assessment of the impact of rehydration on the fermentation process. High expression of SIP18 at the beginning of rehydration was shown to be due to high transcription of the gene during the drying process. High sugar concentrations of media initiated transcription of the GPD1 gene and triggered the cellular glycerol biosynthesis pathway in examined strains. Rehydration time and type of strain showed to have no statistically significant impact on the course of the fermentation; RT qPCR results depended mainly on the time of rehydration and sugar concentration of the medium. This is the first attempt to confront rehydration time and molecular mechanisms acting upon rehydration with the course of the fermentation process.
Źródło:
Acta Biochimica Polonica; 2017, 64, 2; 287-294
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes in cell physiology at the stage of dehydration in a cryopreservation protocol
Autorzy:
Domzalska, L.
Kedracka-Krok, S.
Mikula, A.
Rybczynski, J.J.
Powiązania:
https://bibliotekanauki.pl/articles/951293.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cryopreservation
cell physiology
dehydration
Gentiana cruciata
proteomic analysis
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2015, 96, 1
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prokaryotic toxin-antitoxin systems - the role in bacterial physiology and application in molecular biology
Autorzy:
Bukowski, Michal
Rojowska, Anna
Wladyka, Benedykt
Powiązania:
https://bibliotekanauki.pl/articles/1039939.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
bacteria physiology
toxin-antitoxin systems
environmental stress conditions
antibiotic resistance
Opis:
Bacteria have developed multiple complex mechanisms ensuring an adequate response to environmental changes. In this context, bacterial cell division and growth are subject to strict control to ensure metabolic balance and cell survival. A plethora of studies cast light on toxin-antitoxin (TA) systems as metabolism regulators acting in response to environmental stress conditions. Many of those studies suggest direct relations between the TA systems and the pathogenic potential or antibiotic resistance of relevant bacteria. Other studies point out that TA systems play a significant role in ensuring stability of mobile genetic material. The evolutionary origin and relations between various TA systems are still a subject of a debate. The impact of toxin-antitoxin systems on bacteria physiology prompted their application in molecular biology as tools allowing cloning of some hard-to-maintain genes, plasmid maintenance and production of recombinant proteins.
Źródło:
Acta Biochimica Polonica; 2011, 58, 1; 1-9
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Nobel Prize 2015 in physiology or medicine for highly effective antiparasitic drugs
Autorzy:
Dlugonska, H.
Powiązania:
https://bibliotekanauki.pl/articles/6010.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Nobel Prize
physiology
medicine
antiparasitic drug
parasite
chemotherapy
artemisinin
avermectin
Źródło:
Annals of Parasitology; 2015, 61, 4
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Borg Scale at high altitude
Autorzy:
Küpper, Thomas
Heussen, N.
Morrison, Audry
Schöffl, Volker
Basnyat, Buddha
Hillebrandt, David
Milledge, Jim
Steffgen, Jürgen
Meier, Beate
Powiązania:
https://bibliotekanauki.pl/articles/2098238.pdf
Data publikacji:
2021-06-18
Wydawca:
Państwowa Wyższa Szkoła Zawodowa w Tarnowie
Tematy:
Borg Scale
perceived exertion
high altitude
exercise physiology
exercise testing
Opis:
Introduction: The Borg Scale for perceived exertion is well established in science and sport to keep an appropriate level of workload or to rate physical strain. Although it is also often used at moderate and high altitude, it was never validated for hypoxic conditions. Since pulse rate and minute breathing volume at rest are increased at altitude it may be expected that the rating of the same workload is higher at altitude compared to sea level.Material and methods: 16 mountaineers were included in a prospective randomized design trial. Standardized workload (ergometry) and rating of the perceived exertion (RPE) were performed at sea level, at 3,000 m, and at 4,560 m. For validation of the scale Maloney-Rastogi-test and Bland-Altmann-Plots were used to compare the Borg ratings at each intensity level at the three altitudes; p < 0.05 was defined as significant.Results: In Bland-Altmann-Plots more than 95% of all Borg ratings were within the interval of 1.96 x standard deviation. There was no significant deviation of the ratings at moderate or high altitude. The correlation between RPE and workload or oxygen uptake was weak.Conclusion: The Borg Scale for perceived exertion gives valid results at moderate and high altitude – at least up to about 5,000 m. Therefore it may be used at altitude without any modification. The weak correlation of RPE and workload or oxygen uptake indicates that there should be other factors indicating strain to the body. What is really measured by Borg’s Scale should be investigated by a specific study.
Źródło:
Health Promotion & Physical Activity; 2021, 15, 2; 1-8
2544-9117
Pojawia się w:
Health Promotion & Physical Activity
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of different types of surfaces on the results of running speed tests in young soccer players
Autorzy:
Jastrzębski, Zbigniew
Bichowska, Marta
Rompa, Paweł
Radzimiński, Łukasz
Dargiewicz, Robert
Powiązania:
https://bibliotekanauki.pl/articles/1055148.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
Sprint tests
exercise test
football
physical performance
sport physiology
Opis:
The main purpose of this study was to determine the influence of different types of surfaces on the sprint test results. 33 male football players from two age categories - U15 and U18 - performed sprint tests (7 distances between 5 and 30m) and a 150m shuttle run test on three types of surfaces: natural grass [n], a synthetic surface [s] and a rubber surface [r]. The longer distance a player covers, the more likely it is that the importance of the type of running surface will be noticed. The rubber surface diminishes the negative effects of changeable factors on the reliability of the tests and therefore, in our opinion, is recommended for control tests and especially for longitudinal tests. Comparing the results of running speed tests performed on different surfaces and especially in different weather conditions is unjustified.
Źródło:
Central European Journal of Sport Sciences and Medicine; 2014, 5, 1; 5-14
2300-9705
2353-2807
Pojawia się w:
Central European Journal of Sport Sciences and Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 93

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