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Tytuł:
Finding Playing Styles of Badminton Players Using Firefly Algorithm Based Clustering Algorithms
Autorzy:
Ilankoon, I.M.T.P.K.
Samarasinghe, U.S.
Ariyaratne, M.K.A.
Silva, R. M.
Powiązania:
https://bibliotekanauki.pl/articles/27312858.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
firefly algorithm
clustering
intra- and inter-cluster distance
badminton
Opis:
Cluster analysis can be defined as applying clustering algorithms with the goalof finding any hidden patterns or groupings in a data set. Different clusteringmethods may provide different solutions for the same data set. Traditionalclustering algorithms are popular, but handling big data sets is beyond theabilities of such methods. We propose three big data clustering methods basedon the firefly algorithm (FA). Three different fitness functions were definedon FA using inter-cluster distance, intra-cluster distance, silhouette value, andthe Calinski-Harabasz index. The algorithms find the most appropriate clustercenters for a given data set. The algorithms were tested with nine popularsynthetic data sets and one medical data set and are later applied on two bad-minton data sets with the intention of identifying the different playing stylesof players based on their physical characteristics. The results specify that thefirefly algorithm could generate better clustering results with high accuracy.The algorithms cluster the players to find the most suitable playing strategyfor a given player where expert knowledge is needed in labeling the clusters.Comparisons with a PSO-based clustering algorithm (APSO) and traditional al-gorithms point out that the proposed firefly variants work in a similar fashion asthe APSO method, and they surpass the performance of traditional algorithms.
Źródło:
Computer Science; 2023, 24 (3); 427--450
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Systematic Approach to Sustainable Development in Agricultural and Food Systems – Example of Republic of Sakha (Yakutia) and the Arctic Zone
Systematyczne podejście do zrównoważonego rozwoju systemów rolno-spożywczych – przykład Republiki Sacha (Jakucja) i Arktyki
Autorzy:
Kazambayeva, Aigul M.
Begeyeva, Mira K.
Nursapina, Kanbibi U.
Rakhmetova, Rakhila
Powiązania:
https://bibliotekanauki.pl/articles/27314031.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Komitet Człowiek i Środowisko PAN
Tematy:
agro-industrial complex
development factors
employment level
rural areas
Arctic
kompleks rolno-przemysłowy
czynniki rozwoju
poziom zatrudnienia
obszary rolnicze
Arktyka
Opis:
The relevance of the study is conditioned by the need to apply a systematic approach to the investigation of agricultural production features as a complex dynamic structure that functions in an unstable market environment and depends on the influence of natural changes. In this regard, this study aims to identify socio-economic, natural, and environmental factors that affect the sustainable development of agricultural sectors, as well as predict the impact of material, technological, and climatic factors on the health and stability of the entire system. The leading method for studying this problem is the method of a systematic approach, which allows investigating agricultural production as a complex dynamic structure that functions in an unstable market environment and depends on the influence of natural factors. In addition, this study involved the following research methods: the method of structural analysis, comparative, statistical, and deduction methods, classification method. The study presents the factors directly or indirectly influencing the development of northern agriculture, predicts the impact of these factors on the stability of the system, and shows possible ways to overcome the negative impact. The regional management system directly affected the level of food self-sufficiency of the Sakha Republic. To improve the current situation, it is necessary to review the mechanisms of interaction between state institutions and agricultural producers. Furthermore, there is an entire list of factors that negatively affect the functioning of the agricultural sector of Yakutia. The situation requires an immediate design of a policy for the development of rural areas through the socio-economic development of villages in the region. The research materials are of practical value for the governing bodies of the agro-industrial complex of the Republic of Sakha (Yakutia), as well as teachers and students studying the issues of sustainable development of agriculture.
Trafność badań uwarunkowana jest koniecznością zastosowania systematycznego podejścia do badania cech produkcji rolnej jako złożonej struktury dynamicznej, funkcjonującej w niestabilnym otoczeniu rynkowym i zależnej od wpływu zmian naturalnych. W tym zakresie niniejsze opracowanie ma na celu identyfikację czynników społeczno-ekonomicznych, przyrodniczych i środowiskowych wpływających na zrównoważony rozwój sektorów rolnictwa, a także prognozę wpływu czynników materiałowych, technologicznych i klimatycznych na zdrowotność i stabilność całego systemu. Wiodącą metodą badania tego problemu jest metoda podejścia systemowego, która pozwala badać produkcję rolniczą jako złożoną strukturę dynamiczną, funkcjonującą w niestabilnym otoczeniu rynkowym i zależną od wpływu czynników naturalnych. Ponadto w pracy wykorzystano następujące metody badawcze: metodę analizy strukturalnej, metodę porównawczą, statystyczną i dedukcyjną, metodę klasyfikacyjną. W opracowaniu przedstawiono czynniki wpływające bezpośrednio lub pośrednio na rozwój rolnictwa północnego, przewiduje się wpływ tych czynników na stabilność systemu oraz wskazuje możliwe sposoby przezwyciężenia negatywnego wpływu. Regionalny system zarządzania bezpośrednio wpłynął na poziom samowystarczalności żywnościowej Republiki Sacha. Dla poprawy obecnej sytuacji konieczny jest przegląd mechanizmów interakcji między instytucjami państwowymi a producentami rolnymi. Ponadto istnieje cała lista czynników, które negatywnie wpływają na funkcjonowanie sektora rolnego Jakucji. Sytuacja wymaga pilnego zaprojektowania polityki rozwoju obszarów wiejskich poprzez społeczno-gospodarczy rozwój wsi w regionie. Materiały badawcze mają wartość praktyczną dla władz kompleksu rolno-przemysłowego Republiki Sacha (Jakucja), a także dla nauczycieli i studentów studiujących problematykę zrównoważonego rozwoju rolnictwa.
Źródło:
Problemy Ekorozwoju; 2023, 18, 1; 226--234
1895-6912
Pojawia się w:
Problemy Ekorozwoju
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adjustment in women treated for rheumatoid arthritis
Autorzy:
Janiszewska, M.
Drop, B.
Drop, K.
Kowalska, W.
Podstawka, I.
Religioni, U.
Powiązania:
https://bibliotekanauki.pl/articles/28761876.pdf
Data publikacji:
2022
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2022, 29, 1; 80-85
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of the economic efficiency of industrial enterprise management during the Kazakhstan integration into the EAEU
Ocena efektywności ekonomicznej zarządzania przedsiębiorstwem przemysłowym w czasie integracji Kazachstanu z EUG
Autorzy:
Nurekenova, Elvira S.
Sholpanbayeva, Kanshaim Zh.
Apysheva, Assel A.
Rakhimberdinova, Madina U.
Shaikhanova, Nurgul K.
Powiązania:
https://bibliotekanauki.pl/articles/27315256.pdf
Data publikacji:
2022
Wydawca:
Politechnika Częstochowska
Tematy:
crisis
structure
formalisation
integration
efficiency
kryzys
struktura
formalizacja
integracja
efektywność
Opis:
The purpose of this study is to examine the effectiveness of the measures taken and to identify areas for further integration cooperation. The originality of the study is determined by the fact that the formalisation of Kazakhstan integration into the Eurasian Economic Union (EAEU) structures allows expanding the possibilities of building cooperative ties. This requires greater involvement of enterprises in the integration and the development of a unified state system to assess the effectiveness of integration associations. The authors show that, in general, the integration of Kazakhstan and the EAEU can be assessed based on a common methodology for the economic efficiency of individual enterprises. The authors suggest the adapted methodology of the balanced scorecard system since it is appropriate in this case. The practical significance of the study is determined by the need to clarify the structural features of integration and calculate efficiency in general based on the results of the cooperation of Kazakh enterprises with external partners. The development of such an assessment system can also be implemented taking into account the need to counter the global economic crisis.
Celem niniejszego opracowania jest zbadanie skuteczności podejmowanych działań oraz zidentyfikowanie obszarów dalszej współpracy integracyjnej. O oryginalności opracowania decyduje fakt, że sformalizowanie integracji Kazachstanu ze strukturami Eurazjatyckiej Unii Gospodarczej (EUG) pozwala na rozszerzenie możliwości budowania powiązań kooperacyjnych. Wymaga to większego zaangażowania przedsiębiorstw w integrację i budowy jednolitego systemu państwowego do oceny efektywności stowarzyszeń integracyjnych. Autorzy pokazują, że generalnie integrację Kazachstanu i EUG można oceniać w oparciu o wspólną metodologię efektywności ekonomicznej poszczególnych przedsiębiorstw. Autorzy proponują zaadaptowaną metodologię systemu zrównoważonej karty wyników, ponieważ jest ona w tym przypadku odpowiednia. Praktyczne znaczenie badania przesądza o potrzebie doprecyzowania cech strukturalnych integracji i obliczenia efektywności w ogóle na podstawie wyników współpracy kazachskich przedsiębiorstw z partnerami zewnętrznymi. Opracowanie takiego systemu oceny może być również realizowane z uwzględnieniem konieczności przeciwdziałania światowemu kryzysowi gospodarczemu.
Źródło:
Polish Journal of Management Studies; 2022, 26, 1; 233--249
2081-7452
Pojawia się w:
Polish Journal of Management Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Normalization of the AIS (Acceptance of Illness Scale) questionnaire and the possibility of its use among cancer patients
Autorzy:
Czerw, A.
Religioni, U.
Szumilas, P.
Sygit, K.
Partyka, O.
Mękal, D.
Jopek, S.
Mikos, M.
Strzępek, L.
Powiązania:
https://bibliotekanauki.pl/articles/28761834.pdf
Data publikacji:
2022
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2022, 29, 2; 269-273
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cognitive consequences of metabolic disorders
Autorzy:
Lopuszanska, U.
Cholewa, K.
Kozyra, M.
Powiązania:
https://bibliotekanauki.pl/articles/2098187.pdf
Data publikacji:
2021
Wydawca:
Instytut Medycyny Wsi
Tematy:
metabolic disorder
obesity
overweight
lipid metabolism
hypertension
carbohydrate metabolism
cognitive function
Opis:
Introduction and objective. Metabolic disorders are associated with a number of negative health consequences. Therefore, the aim of this review was to define the relationships between overweight and obesity, lipid metabolism disorders, hypertension, disorders of carbohydrate metabolism, and cognitive functions. Abbreviated description of the state of knowledge. Metabolic disorders may be linked to the reduction of cognitive functions, such as memory, abstract reasoning, verbal fluency, attention and psychomotor speed. Obesity may lead to changes in the hippocampus, one of the main structures involved in learning and memory. The evidence reviewed suggests that obesity, by inducing inflammation, leads to the dysfunction of brain structures such as the frontal cortex and corpus callosum involved in plasticity processes and cognitive functions. In addition, obesity has been found to be associated with abnormalities in the white matter and glial cells in the brain, which may also cause reduction in processing speed. It is possible that there is a non-linear relationship between lipids and cognitive function moderated by age and the pro- inflammatory process. Disturbances in carbohydrate metabolism can also lead to cognitive impairment, such as: memory, verbal fluency or abstract reasoning. Conclusions. Metabolic disorders are associated with a higher risk of developing cognitive impairment. This association can be moderated by additional factors: lifestyle, oxidative stress, pro-inflammatory processes, genetic factors, age and education.
Źródło:
Journal of Pre-Clinical and Clinical Research; 2020, 14, 4; 139-144
1898-2395
Pojawia się w:
Journal of Pre-Clinical and Clinical Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation on the Effect of Technological Parameters on Emission Factor in 316L Stainless Steel Using Gas Metal Arc Welding
Autorzy:
Satheesh Kumar, K. V.
Selvakumar, P.
Uvanshankar, K. R.
Thirunavukaras, U. S.
Anand, Vijay V.
Vishal, D.
Powiązania:
https://bibliotekanauki.pl/articles/2049738.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
emission factor
shielding gas
Permissible Exposure Limit
health hazards
glass fiber filter
Opis:
Growing awareness for occupational safety in the welding environment needs a sustainable welding system. Welding gases releases toxic tiny particles and gases that inflict severe health consequences in the weld zone are unsolicited. Some of the other main adverse effects are lung disease, hemoptysis, pulmonary inflammation, pneumoconiosis, etc. GMAW procedure has been used for welding 316L stainless steel plates of 3 mm, 5 mm, and 6 mm. Various current configurations with gas flow rate of 5 LPM, 10 LPM and 15 LPM were also used to achieve optimum butt joint performance and to reduce the production rate of fume contributing to cost-effectiveness. In this research a cost-effective fume extraction hood was fabricated for measuring emission factor produced during welding. Various shielding gas compositions including Pure Argon, Pure CO2, 92% Ar+8% CO2 and 88% Ar+12% CO2were used to determine the best operating parameters in the GMAW method. To satisfy the latest Permissible Exposure Limit (PEL) legislation, optimum technical parameters for efficient welding were acknowledged with the lowest emission factor. A maximum reduction of emission factor can be achieved by using Pure Argon. The inclusion of CO2 as a shielding gas mixture gives higher emission factor when compared to Pure Argon. Very low emission factor were witnessed in this research when compared to previous investigations. Lower emission factor of 2941.17 mg /kg of electrode, 4411.76 mg/kg of electrode and 7352.94 mg/kg of electrode were obtained for pure argon as shielding gas with 150 A welding current.
Źródło:
Archives of Metallurgy and Materials; 2021, 66, 2; 609-615
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microphytobenthic primary production on exposed coastal sandy sediments of the Southern Baltic Sea using ex situ sediment cores and oxygen optodes
Autorzy:
Kuriyama, K.
Grundling-Pfaff, S.
Diehl, N.
Woelfel, J.
Karsten, U.
Powiązania:
https://bibliotekanauki.pl/articles/2078927.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
microphytobenthos
primary production
sandy sediment
coastal water
benthic diatom
oxygen consumption
oxygen production
respiration
hydrodynamics
Baltic Sea
Opis:
The shallow coastal water zone of the tide-less southern Baltic Sea is dominated by exposed sandy sediments which are typically inhabited by microphytobenthic communities, but their primary production is poorly studied, and hence four stations between 3.0 and 6.2 m depth were investigated. Sediment cores were carefully taken to keep the natural layering and exposed in a controlled self-constructed incubator. Respiratory oxygen consumption and photosynthetic oxygen production were recorded applying planar oxygen optode sensors. We hypothesized that with increasing water depths the effects of wind- and wave-induced erosion and mixing of the upper sediment layer are dampened and expected higher microphytobenthic biomass and primary production in the incubated cores. Our data partly confirm this hypothesis, as cores sampled at the most exposed stations contained only 50% chlorophyll a m−2 compared to the deeper stations. However, primary production was highly variable, probably due to fluctuating sediment-disturbing conditions before the cores were taken. Due to these physical forces sand grains were highly mobile and rounded, and small epipsamic benthic diatoms dominated, which preferentially occurred in some cracks and crevices as visualized by scanning electron microscopy. The data fill an important gap in reliable production data for sandy sediments of the southern Baltic Sea, and point to the ecological importance and relevant contribution of microphytobenthic communities to the total primary production of this marine ecosystem. Oxygen planar optode sensor spots proved to be a reliable, sensitive and fast detection system for ex situ oxygen exchange measurements in the overlying water of intact sediment cores.
Źródło:
Oceanologia; 2021, 63, 2; 247-260
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nonlinear homogeneous dynamical system of fully cracked concrete beam
Autorzy:
Mohan, G.
Pandey, U. K.
Powiązania:
https://bibliotekanauki.pl/articles/1818788.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
non-linear dynamics
two-DOF systems
homogeneous dynamical systems
bilinearity ratio
cracked concrete beams
fixed beam
dynamika nieliniowa
układ dynamiczny
system homogeniczny
belka betonowa
Opis:
Purpose: Purpose of this paper is the theoretical formulation of elasto-dynamics behaviour of fully cracked concrete beams for two-degree of freedom (DOF) dynamical system. Such modelled system is demonstrated by a new class of two-DOF conservative, fully-nonlinear systems known as nonlinear homogeneous dynamical (NHD) systems. Design/methodology/approach: The theoretical formulation of Two-DOF dynamical system has been developed by using the fundamental concept of structural analysis. Further, the behaviour of such class of conservative dynamical system has been concluded by using MATLAB. Findings: Findings can be distinguished into two aspects. First, when subjected to service loads, reinforced concrete structures possess tension cracks. Due to load variation with time leads the breathing action (opening-closing-reopening) of existing cracks and the behaviour of such structures are nonlinearly-elastic. Second, such class of fully nonlinear dynamical system possess dependence of stiffness coefficients on nodal displacements. Research limitations/implications: The mechanism behind such class of fully nonlinear dynamical system is not yet fully explored. Practical implications: Practical implications are related to the structural response of fully cracked concrete beam to different earthquake excitation, especially to understand the response of such nonlinear homogeneous elasto-dynamical system with two-DOF concrete beam. Originality/value: Elasto-dynamics of fully cracked concrete beams.
Źródło:
Journal of Achievements in Materials and Manufacturing Engineering; 2021, 106, 1; 5--19
1734-8412
Pojawia się w:
Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of hip dysplasia on some biochemical parameters, oxidative stress factors and hematocrit levels in dogs
Autorzy:
Polat, E.
Han, M.C.
Kaya, E.
Yilmaz, S.
Kayapinar, S.D.
Coskun, S.
Yildirim, A.
Can, U.K.
Powiązania:
https://bibliotekanauki.pl/articles/2087150.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
alkaline phosphatase
hematocrit
hip dysplasia
creatine kinase
oxidative stress
Źródło:
Polish Journal of Veterinary Sciences; 2021, 24, 4; 473-478
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Unsteady MHD plane couette-poiseuille flow of fourthgrade fluid with thermal radiation, chemical reaction and suction effects
Autorzy:
Joseph, K. M.
Ayankop-Andi, E.
Mohammed, S. U.
Powiązania:
https://bibliotekanauki.pl/articles/2106460.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
promieniowanie cieplne
magnetohydrodynamika
ssanie
thermal radiation
MHD
chemical reaction
fourth-grade fluid
suction
He-Laplace
Opis:
This study investigates the unsteady MHD flow of a fourth-grade fluid in a horizontal parallel plates channel. The upper plate is oscillating and moving while the bottom plate is stationary. Solutions for momentum, energy and concentration equations are obtained by the He-Laplace scheme. This method was also used by Idowu and Sani [12] and there is agreement with our results. The effect of various flow parameters controlling the physical situation is discussed with the aid of graphs. Significant results from this study show that velocity and temperature fields increase with the increase in the thermal radiation parameter, while velocity and concentric fields decrease with an increase in the chemical reaction parameter. Furthermore, velocity, temperature and concentric fields decrease with an increase in the suction parameter. It is also interesting to note that when 4S0=, our results will be in complete agreement with Idowu and Sani [12] results. The results of this work are applicable to industrial processes such as polymer extrusion of dye, draining of plastic films etc.
Źródło:
International Journal of Applied Mechanics and Engineering; 2021, 26, 4; 77--98
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Current view on treatment of attention deficit hyperactivity disorder in adolescents
Autorzy:
Cholewa, K.
Wysokińska, O.
Zaremba, B.
Siwek, M.
Jańczyk, M.
Łopuszańska, U.
Powiązania:
https://bibliotekanauki.pl/articles/1918940.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Medyczny w Białymstoku
Tematy:
ADHD
methylphenidate
adolescents
psychotherapy
pedagogical therapy
Opis:
Diagnosis of attention deficit hyperactivity disorder (ADHD) in adolescent patients may be problematic, because of the broad spectrum of symptoms. Population research display heritable character. The function of dopaminergic, adrenergic, and serotoninergic systems is disordered in different ways in patients, who suffer from this disease. Purpose: The aim of this article is to show the actual view on the treatment of attention deficit hyperactivity disorder in teenage patients.. Results: In the treatment of ADHD the most important thing is pedagogical therapy as well as cooperation of parents and medical crew. In some particular cases pharmacologic treatment should also be included in therapeutic process, which is described in this review. Methylphenidate is the most frequent drug used in the treatment and that is why we focused on the complex description of the substance. Conclusions: Teachers and the school responsible for teaching these children must adapt didactic methods to the severity of the disorder. It is valuable to conduct the drug in the therapy of teenagers whose parents ready to cooperate, always with psychiatric supervision. In the process of pharmacotherapy, it is crucial to include breaks, for example during vacations. Psychostimulants are highly addictive substances, which is why many researchers are uncertain about the routine prescription of methylphenidate.
Źródło:
Progress in Health Sciences; 2020, 10(2); 80-86
2083-1617
Pojawia się w:
Progress in Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Decoupling of economic activity and freight transport volume: An evidence for short sea shipping future in the ECOWAS sub-region
Autorzy:
Elem, T. R.
Ogwude, I. C.
Ibe, C. C.
Nnadi, K . U.
Ejem, Ejem Agwu
Powiązania:
https://bibliotekanauki.pl/articles/2141081.pdf
Data publikacji:
2020
Wydawca:
Fundacja Centrum Badań Socjologicznych
Tematy:
decoupling
economic activity
short-sea
shipping
ECOWAS
Opis:
This paper explores the decoupling trend between GDP and freight volumes in the ECOWAS states to develop short sea shipping model for the ECOWAS sub-region aimed at reducing the cost per transported unit within the sub-region. The research is based on cross-sectional data from ECOWAS countries spanning from 2000 to 2013 and sourced from the ECOWAS Commission and National Bureaus of Statistics of some member countries. The data were analysed using arc elasticity which is a transport demand modelling tool, to determine the level of variations among trade volumes in the ECOWAS sub-region. It was discovered that total freight volume improved proportionally with growth in GDP for most of the periods in the ECOWAS member countries. This is confirmed by the coefficients of elasticity close 1 or higher than 1. In certain periods, however, the coefficient of elasticity of total freight volumes was found to be approximately zero, thus, indicating that considerable potential freights were lost. More stable values have the coefficients of general elasticity below 1. In most of the ECOWAS countries, the coefficients of general elasticity are unstable, both negative and positive values have a range of values (from -43.709 to 52.364). Hence, freight traffic volume and GDP in the ECOWAS region is highly decoupled. This has raised a serious question as to the prudence of continued dominance of road transport mode for intra-regional freight movement in the ECOWAS sub-region. The result of the study revealed a strong correlation between GDP, the population of member states and the volume of freight in the ECOWAS member countries. The research also showed that the development of short sea shipping model in the sub-region would depend considerably on growth in GDP, improvement in the productivity of the population and increase in seaport corridors of the ECOWAS sub-region.
Źródło:
Journal of Sustainable Development of Transport and Logistics; 2020, 5, 2; 124-134
2520-2979
Pojawia się w:
Journal of Sustainable Development of Transport and Logistics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ethnobotanical knowledge and folk medicinal significance of the flora of district Gujrat, Punjab, Pakistan
Autorzy:
Ali, S.S.
Hussain, K.
Nawaz, K.
Bhatti, K.H.
Bashir, Z.
Nazeer, A.
Arif, U.
Jafar, S.
Siddiqi, E.H.
Powiązania:
https://bibliotekanauki.pl/articles/2049056.pdf
Data publikacji:
2020
Wydawca:
Instytut Włókien Naturalnych i Roślin Zielarskich
Tematy:
District Gujrat
medicine
ethnomedicinal flora
survey
native people
prowincja Gujrat
lek
rośliny lecznicze używane w medycynie ludowej
rdzenni mieszkańcy
badanie ankietowe
Opis:
Introduction: Medicinal plants are the natural source of medicines used in treatment of many diseases among local communities of various countries. It is also the raw material for the pharmaceutical industry. Pakistan is a country with a variety of medicinal plants, comprehensively studied in some areas, while others still need more studies of their flora. Objectives: The study was performed to catalogue the flora of district Gujrat, Punjab, Pakistan and to assess its ethnomedicinal importance. Methods: A field survey was conducted in the Gujrat district (including Sarai Alamgir, Gujrat and Kharian) in 2019–2020 to collect the flora. Nearly 200 people of various age groups were interviewed and the questionnaire was filled, the gender and professions of the participants were also noted. Results: The plant species collected belonged to 32 different Angiosperm families i.e. Poaceae, Brassicaceae, Fabaceae, Asteraceae, Moraceae, Amaranthaceae, Apiaceae, Myrtaceae, Rutaceae, Solanaceae, Malvaceae, Euphorbiaceae and Lamiaceae. The obtained material consisted of 30 herbs, 20 shrubs and 22 trees. The floral parts used most often were leaves (63%) followed by: flower (41%), fruit (28%), stem (16%), seed (16%), bark (14%), root (13%), whole plant (12%), underground part (3%) and latex (3%). According to the study, the highest RFC (Relative Frequency of Citation) values were 0.1 in Cassia fistula L. (0.25) and the smallest RFC values were observed in Stellaria media (L.) Vill. – 0.025. The highest UV (Use Values) were noted for Achyranthes aspera L. at 0.9. In disease category, the highest value (0.67) of ICF (Informant Consensus Factor) was observed for stomach and skin infections, while the lowest ICF value was noted for diabetes and gonorrhoea (0.27). Conclusions: It was concluded that the Gujrat district is rich in useful plants that can be used in the preparation of various medicines as well as be sold on the herbal market.
Źródło:
Herba Polonica; 2020, 66, 1; 37-51
0018-0599
Pojawia się w:
Herba Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrothermal fabrication of CeVO4 nanoflowers assisted effective photocatalytic mineralization of aqueous methylene blue solution
Autorzy:
Muthuvel, I.
Jayasri, U.
Gowthami, K.
Kumar, N. Dinesh
Thirunarayanan, G.
Balakrishnan, K.
Rajachandrasekar, T.
Powiązania:
https://bibliotekanauki.pl/articles/1031461.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
CeVO4
Cerium vanadate
Methylene Blue
Photocatalyst
Wastewater treatment
Opis:
A tetragonal zircon type cerium vanadate (CeVO4) photocatalyst was successfully synthesized hydrothermal method using Ce(NH4)2(NO3)6 and NH4VO3. The products were characterized using the FT-IR, XRD, FE-SEM and UV-DRS. The XRD results show that crystallite size of cerium vanadate is 27.2 nm. The effect of operational parameters such as effect of pH, catalyst suspension, initial dye concentration and reusability were observed. Hence the catalyst can be reused for continuous treatment of wastewater.
Źródło:
World Scientific News; 2020, 142; 103-119
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł

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