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Wyszukujesz frazę "relative density" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Distribution and relative density of trees species in Kainji Lake National Park, Nigeria
Autorzy:
Akande, O. A.
Ahmad, Y. A.
Shuaib, A. B.
Jeje, C. A.
Powiązania:
https://bibliotekanauki.pl/articles/1077871.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Distribution
Kainji Lake National Park
relative density
species
trees
Opis:
The importance of trees in the environment cannot be overemphasized. This present study, therefore, deals with the distribution and relative density of trees species in Kainji Lake National Park. Data were collected using plot sampling techniques. Therein, a 50 by 50 m2 plot was randomly laid. Within each sample plot, data on all trees ≥ 10 cm in diameter at breast height were enumerated. The data were analyzed using descriptive statistics. The result shows that different types of plants species were enumerated in the selected plots. This included six families of trees: Fabiaceae, Caesalpiniaceae, Rubiaceae, Maliaceae, Annonaceae and Mimosaceae. The percentage score of tree species in the four plots reveals that Afzelia africana recorded the highest with a total number of 60 species, followed by Detarium macrocarpium with 47 species, while Anogeissus leiocarpus and Azadirachta indica recorded 31 and 17 species, respectively. Gardenia aqualla was the least species recorded. The density and relative density of Afzelia africana recorded the highest, with 1.2ha and 26.9%, followed by Detarium microcarpiuum with 0.94ha and 21.1%, respectively, while Gardenia aqualla was the least with 0.02 ha and 0.4%. In terms of mean height, Daniela oliveri recorded the highest, with 28.1m, followed by Afzelia africana with 21.8%, while Azadirachta indica was the least with 5.8%. The mean DBH of Entada africana and Anogeissus leiocarpus recorded was 28.7cm and 28.1cm, while Prosopis africana and Accacia gournmaensis recorded 14.0 and 13.4, respectively, which were the least. The Types of wild animal species that are associated with the tree species includes Baboon, Kob, Grim duiker, Francolin, Patas monkey etc. Relative abundance of the animal species shows that Papio anubis recorded the highest with 40.5 individuals, while Erythrocebus patas recorded the least with 2.5 individuals.
Źródło:
World News of Natural Sciences; 2019, 22; 52-61
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Eating disorders in sport: characteristic of the female athlete triad and relative energy deficiency (RED-S)
Autorzy:
Grzebisz, Natalia
Powiązania:
https://bibliotekanauki.pl/articles/1189833.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
eating disorders; FEMALE athlete triad (Syndrome); menstruation disorders; bone density; food caloric content; Relative Energy Deficiency in Sport (RED-S)
Opis:
Maximizing athletic performance often leads to eating disorders. Women are more vulnerable than men. The interaction of three disorders (nutrition, menstruation, bone decalcification) is defined as the triad of female athletes. The cause of menstrual disorders results from too little supply of energy in the diet. Eating disorders also apply to men. RED-S syndrome refers to a physiological disorder caused by a shortage of energy and involves the release of metabolism disorders, menstrual disorders, musculoskeletal system, reduction of the activity of the immune system, the release of protein synthesis, disorders of the nervous system, poorer recovery and cardiovascular disorders. The etiology of the RED-S syndrome is a result of a relatively low availability of energy, as in the triad. Among the causes of these phenomena we can enumerate psychological, biological and social interactions. To assess the condition ,especially in sport, questionnaires are most commonly used and they include questions about height, weight, exercise time, perception, eating disorders and menstrual cycle (women). The nutritional education is very important in the prevention and treatment of eating disorders. It suggests the need for an athlete to increase the energy intake and / or decrease exercise expenditure to treat the condition. This paper presents an analysis of the current state of knowledge of the etymology, incidence and effects of eating disorders in athletes based on the available literature.
Źródło:
World Scientific News; 2016, 48; 199-205
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Particle localization via measurement induced entanglement
Autorzy:
Vasura Jayaweera, K. K. Y.
Wijewardena Gamalath, K. A. I. L.
Powiązania:
https://bibliotekanauki.pl/articles/1059506.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Fluffy-Bunny entanglement
Quantum entanglement
photons
position probability density
relative position
scattering angle
spatial localization
variance
Opis:
To explore the boundary between quantum and classical physics in the context of quantum entanglement, the particle localization via measurement induced entanglement on photons incident onto a distinguishable, massive non-interacting two-particle system was studied. The specific case of how particles acquire well defined spatial localization when light is scattered off and detected was considered. The localization process studied both qualitatively and quantitatively was observed to be valid for particles which were initially localized as well as initially completely delocalized. The localization scheme was also observed to be extremely sensitive to its initial conditions. Furthermore, a difference in the localization scheme in terms of the number of scattering events was observed between monochromatic photons and photons with variable frequencies. From all these results it was apparent that we can interpret the uniquely quantum features of entanglement in terms of classicality.
Źródło:
World Scientific News; 2019, 128, 2; 234-254
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
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