scispace - formally typeset
Search or ask a question
Institution

Kazimierz Wielki University in Bydgoszcz

EducationBydgoszcz, Poland
About: Kazimierz Wielki University in Bydgoszcz is a education organization based out in Bydgoszcz, Poland. It is known for research contribution in the topics: Population & Luminescence. The organization has 1109 authors who have published 2923 publications receiving 19548 citations. The organization is also known as: Casimir the Great University & Uniwersytet Kazimierza Wielkiego w Bydgoszczy.


Papers
More filters
DOI
22 Nov 2021
TL;DR: In this paper, the ability of Bacillus subtilis cultures isolated from natto (fermented soybeans) to biosynthesize a broad range of alkylpyrazines was evaluated.
Abstract: Pyrazines are organic compounds with a varied, intense aroma of roasted nuts, occasionally with hints of baked potatoes, almonds, and others. As a result, they are used in the food industry as food flavorings. Biosynthesis of pyrazines using microorganisms in environmentally friendly conditions is an alternative to chemical synthesis. However, screening is required to isolate efficient producer strains for efficient biosynthesis of this compound. The study’s goal was to assess the ability of Bacillus subtilis cultures isolated from natto (fermented soybeans) to biosynthesize a broad range of alkylpyrazines. B. subtilis isolated cultures were found to be capable of producing 2-methylpyrazine, 2,3-dimethylpyrazine, 2,5-dimethylpyrazine, 2,6-dimethylpyrazine, 2,3,5-trimethylpyrazine, and 2,3,5,6-tetramethylpyrazine. As a result of the screening, two cultures of B. subtilis capable of producing alkylpyrazines were isolated. At a total concentration of 3261 µg/L, the BcP4 strain primarily produced 2-methylpyrazine (690 µg/L), 2,3-dimethylpyrazine (680 µg/L), and 2,6-dimethylpyrazine (1891 µg/L). At a total concentration of 558 mg/L, the BcP21 strain produced 2,5-dimethylpyrazine (4.5 mg/L), 2,3,5-trimethylpyrazine (52.6 mg/L), and 2,3,5,6-tetramethylpyrazine (501.1 mg/L). The results show that different B. subtilis strains are predisposed to produce different alkylpyrazines.

8 citations

Journal ArticleDOI
TL;DR: Hydcharis morsus-ranae is well adapted to the environment in oxbow lakes of the River Vistula and represents the S-R strategy and fruiting in Poland is higher than in Canada, where it is an invasive taxon.
Abstract: The aim of the research was to establish the density of specimens and shoots as well as the reproductive effort of Hydrocharis morsus-ranae during the whole vegetative period in a Polish oxbow lake The following specimen features were examined: plant diameter, total length, the number of buds, flowers, young fruit, ripe fruit, turions and leaves and also dry total mass, vegetative mass, generative mass, the bud mass, the flower mass, young fruit mass and ripe fruit mass The density of Hydrocharis morsus-ranae specimens per square metre ranged from 10 to 170 while the density of shoots ranged from 10 to 545 From one square metre overgrown with Hydrocharis morsus-ranae, a maximum of 389 turions, 50 fruit and 4000 seeds are produced The maximum of reproductive effort is 978% of vegetative mass and 22% of generative mass in September 2010 The factors which best explain changeability of the Hydrocharis morsus- ranae population in time are the length and the diameter of the specimens in the population Fruiting of Hydrocharis morsus-ranae in Poland is higher than in Canada, where it is an invasive taxon Hydrocharis morsus-ranae is well adapted to the environment in oxbow lakes of the River Vistula and represents the S-R strategy

8 citations

Journal ArticleDOI
31 Jan 2017-PLOS ONE
TL;DR: No significant differences in expression of genes associated with cellular stress response are detected as well as between gymnasts and physical active man, suggesting a similar adaptive effect to exercise may be obtained by lower and upper body exercise.
Abstract: Objectives The aim was to compare the effect of upper and lower body high-intensity exercise on chosen genes expression in athletes and non-athletes. Method Fourteen elite male artistic gymnasts (EAG) aged 20.6 ± 3.3 years and 14 physically active men (PAM) aged 19.9 ± 1.0 years performed lower and upper body 30 s Wingate Tests. Blood samples were collected before, 5 and 30 minutes after each effort to assess gene expression via PCR. Results Significantly higher mechanical parameters after lower body exercise was observed in both groups, for relative power (8.7 ± 1.2 W/kg in gymnasts, 7.2 ± 1.2 W/kg in controls, p = 0.01) and mean power (6.7 ± 0.7 W/kg in gymnasts, 5.4 ± 0.8 W/kg in controls, p = 0.01). No differences in lower versus upper body gene expression were detected for all tested genes as well as between gymnasts and physical active man. For IL-6 m-RNA time-dependent effect was observed. Conclusions Because of no significant differences in expression of genes associated with cellular stress response the similar adaptive effect to exercise may be obtained so by lower and upper body exercise.

8 citations

Journal Article
TL;DR: In this paper, the authors reviewed the scientific literature concerning the anxiety phenomenon in combat sports, with particular emphasis on the most commonly used research tools in the psychological analysis of anxiety among combat sports athletes, including the different varieties of this phenomenon.
Abstract: According to the accurate recognition of John Harasymowicz “fighting reveals different features of human na‐ ture, such as anxiety, aggression, vanity, pride, abilities, physical disposition, and knowledge as well as interde‐ pendence between these features”. In this article particular attention was paid to the phenomenon of anxiety, which arises in different circumstances and almost always has an impact on physical, mental and behavior‐ al health of people, especially athletes. The consequences of its influence are still unknown. Understanding the way how emotions influence the course of sports rivalry is a key element for controlling weaknesses, par‐ ticularly during a fight. Therefore, the aim of this study was to review the scientific literature concerning the anxiety phenomenon in combat sports, with particular emphasis on the most commonly used research tools in the psychological analysis of anxiety among combat sports athletes, including the different varieties of this

8 citations

Journal ArticleDOI
TL;DR: Practical problems besetting such studies in natural populations might be easier to overcome in land snail than in many other organisms and thus studies on land snails could be relevant to biodiversity as a whole.
Abstract: The role of evolutionary rescue, i.e. adaptive evolution prolonging the persistence of populations declining under environmental stress, has become the focus of intensive research. Sufficiently rapid adaptation is the basis of evolutionary rescue. Recent studies have shown that land snails are capable of adaptive changes within a few decades or an even shorter time. These changes have concerned shell colour, shape and size, and occurred under selective pressures including climatic shifts and impacts of introduced species. Selection coefficients reached up to 0.5 and evolutionary rates up to 0.3 kilodarwin. Land snails are among the most threatened groups of organisms worldwide. Evolutionary changes in response to habitat deterioration might assist efforts to protect their populations. However, threatened species often live in small, isolated populations and the main threats to their persistence, habitat destruction and introductions of alien predators and competitors, are usually drastic and abrupt. Unaided, such species are not likely to be rescued by adaptation. On the other hand, evolutionary change may prevent common species from becoming uncommon; declines in species that until recently were widespread and common are a growing conservation concern. Compared with theoretical models and laboratory studies, little is known about evolutionary rescue in the wild. Practical problems besetting such studies in natural populations might be easier to overcome in land snails than in many other organisms and thus studies on land snails could be relevant to biodiversity as a whole.

8 citations


Authors

Showing all 1123 results

Network Information
Related Institutions (5)
University of Warsaw
56.6K papers, 1.1M citations

82% related

Jagiellonian University
44K papers, 862.6K citations

82% related

Adam Mickiewicz University in Poznań
24K papers, 305.1K citations

81% related

University of Wrocław
25.1K papers, 358.7K citations

81% related

AGH University of Science and Technology
27.9K papers, 357.4K citations

81% related

Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202312
202237
2021217
2020246
2019247
2018278