bluuebunny/crossref_metadata_2025_split huggingface dataset:
Intangible Asset Structure and Financial Performance of Non-Financial Firms Listed at Nairobi Securities Exchange, Kenya
Authors: Obong’o Simeon , Nasieku Tabitha , Gekara Mouni 
Published: September 2024

The Kenyan listed firms have immensely contributed to the country’s economy. However, poor financing decisions have led to most firms’ failure, which has in turn posed a big dilemma to researchers, business managers, as well as investors. Past research relating intangible asset structure and financial performance have also presented mixed results. Therefore, this study purposed to establish the relationship between intangible asset structure and financial performance of listed non-financial firms operating in Kenya. Thirty (30) non-financial firms were targeted as population of the study and were selected using census sampling technique as a unit of analysis. The findings yielded that there was a positive relationship between intangible assets and non-financial firms listed at NSE; with a model as follows Y = 7.042 + 0.675X + ԑ It was therefore concluded that managing intangible asset structure contributed betterment and profitability of non-financial firms’ listed at Nairobi Securities Exchange, Kenya.
Handwashing practices among urban households during the COVID-19 in Ghana
Authors: Mengba Jennifer Dokbila , Fielmua Nicholas 
Published: September 2024

Abstract

Access to handwashing facilities on the one hand and their effective use on the other are critical in the fight against the spread of water, sanitation, and hygiene-related diseases, including COVID-19. However, access to and effective use of handwashing facilities prior to the COVID-19 was not prioritised in Ghana. Using an online survey of 4,257 urban households, this study examined access to handwashing facilities, the motivation to acquire such facilities, and their effective utilisation following the introduction of the government of Ghana’s free water delivery as part of measures to combat the pandemic. We employed descriptive statistics, Chi-square, and Pearson correlation to analyse the data. Our findings reveal a significant increase in the construction of handwashing facilities and handwashing frequencies among households, driven by heightened awareness and fear of the COVID-19 infection. About 83.2 percent of households had handwashing facilities. Despite improvement in handwashing practices among 89.13 percent of households with handwashing facilities, disparities persist as 16.8 percent of the households lacked handwashing facilities. The risk of infections among these vulnerable households could impede efforts to maintain hygiene standards during the period due to the communicability of the disease. In terms of post-COVID-19 sustainability of handwashing facilities and practices, female respondents were more likely to sustain them than male respondents. The pandemic underscored hand hygiene's critical importance in spreading infectious diseases and promoting public health. Within the water, sanitation, and hygiene arena, the COVID-19 pandemic leaves a legacy of providing an opportunity and motivating households to promote hand hygiene globally.
Arctic and Barents Sea ice extent variability and trends in 1979–2022
Authors: Trofimov A. G. 
Published: September 2024

The aim of the paper is to assess interannual and decadal variability of the Barents Sea and Arctic ice extent in various seasons for the period from 1979 to 2022.The material for the study was satellite data on the Barents Sea and Arctic ice extent, climate indices, oceanographic data obtained during surveys in the Barents Sea by PINRO and other available information on hydrometeorological conditions of the sea in 1979–2022.Methods of descriptive statistics as well as comparative, correlation, regression, harmonic and cluster analyses were applied.Results: The year-to-year changes in the Barents Sea and Arctic ice extent in various seasons are described for 1979–2022. The modern climate changes, manifested in substantial warming of air and water masses in the Arctic, resulted in a considerable ice extent reduction in the studied areas in recent decades. Well-marked negative trends took place in all months and seasons. The annual mean ice extent was decreasing at a rate of 532 thousand km2 per decade in the Arctic, and at a rate of 105 thousand km2 per decade in the Barents Sea. Over the past 40 years, the ice extent in the Arctic has decreased by 14%, and in the Barents Sea — by half (by 51%), while the ice-free period duration has increased in the Barents Sea from one to three months. Hydrometeorological parameters were identified that are most closely related to the ice extent in the Arctic (|r| ≥ 0.40) and Barents Sea (|r| ≥ 0.60). Reliable regression models were developed that explain 45.2 and 88.0% of its variability, respectively. The contribution of individual factors to the ice extent variability explained by regression equations was quantitatively assessed, and the leading role of air temperature was noted.Practical significance: The obtained results are useful for a better understanding of the climate processes occurring in the Arctic and Barents Sea in recent decades and can be used to assess the impact of climate changes on the main objects of Russian fishery in these areas.
Study of the jellyfish Rhizostoma pulmo hydrolysis and characterization of the obtained product
Authors: Belyakova I. A. , Esina L. M. , Ushakova Z. E. , Shtenina D. V. 
Published: September 2024

The purpose of this work is to develop technological parameters for the hydrolysis of barrel jellyfish Rhizostoma pulmo involving the use of enzymatic agents «Enzy-mix» and alcalase, available through the domestic market, as well as to investigate the amino acid and mineral composition of the resultant hydrolysate.Methods used: the process of hydrolysis has been assessed based on the changes in peptide concentrations in the hydrolysate, the content of amino nitrogen, and the degree of hydrolysis. To investigate its chemical, amino acid, and mineral composition, the standard methods were used. Novelty: the use of jellyfish for hydrolysis after its thawing and the hydrolysis procedure not involving the addition of water into the raw material subjected to hydrolysis present a novel approach.Result: the optimal regime for hydrolysis of barrel jellyfish Rh. pulmo after its thawing has been identified, which was characterized by the use of 1% alcalase at the temperature 55±2 °C and duration of 1 h. It has been shown that alcalase is more effective in terms of amino nitrogen accumulation than enzymatic agent «Enzy-mix». The values of amino nitrogen after 1 h of hydrolysis involving the use of 1% alcalase were higher than the values of the same parameter obtained during the 3-hour hydrolysis involving 1.5% «Enzy-mix» at the temperature 40±2 °C. The hydrolysate, after its concentration to the dry matter exceeding 30%, contains no less than 15.1±0.59% of protein represented by 48% of essential amino acids, out of which leucine and isoleucine prevail (15 %). Among non-essential amino acids, the most prominent was glycine (17 %). For all essential amino acids, except for valine, the amino acid score exceeds 100%. In humans, consumption of around 20 g of the hydrolysate covers the daily physiological requirement of magnesium.Practical significance: the obtained data on the amino acid profile and mineral composition of the barrel jellyfish Rh. pulmo hydrolysate provide the basis for its consideration as a promising ingredient for the functional nutrition products.
Fisheries in the context of a sustainable economy
Authors: Yarkina N. N. , Logunova N. A. 
Published: September 2024

The aim of the work is to develop theory and practice of sustainable fisheries.Used methods: abstract-logical approach, in particular, deduction and induction methods, analysis and synthesis, which made it possible to determine the essence of the concept of “sustainable fisheries”, highlight its features and system components, assess the development trends of world fisheries and aquaculture, develop a conceptual model of sustainable fisheries.The novelty of the study results lies in the identification of sustainable fisheries as an independent scientific economic category, clarification of its meaning, the creation of a new approach to the formation of the value chain of fish products in sustainable fisheries, and the development of a conceptual model of sustainable fisheries.Results of the study: the work characterizes sustainable fisheries in the context of its lack of alternative on the path to sustainable development; the functional classification of environmental goods and services is emphasized and the need to include them in the value chain of fishery products is justified; such system elements of the conceptual model of sustainable fisheries as its mission, goals, methodological basis, key factor, principles and tools are highlighted.The practical significance of the study is determined by its consistency with the general trend of industry development, which is based on an ecosystem approach to fisheries and aquaculture and a focus on achieving the goals of sustainable development of society.
Trends in the development of the fisheries complex and consumption of fish products in the country
Authors: Sergeev L. I. , Samsonov A. V. 
Published: September 2024

The purpose of the work is to analyze current trends in the development of the Russian fisheries complex and identify the causes of the stagnant dynamics of consumption of fish products by the population.Methods used: general scientific research methods, as well as methods of statistical analysis of time series, graphical and coefficient methods.The element of novelty: The current interdependence between the dynamics of fish catch, the actual financial results of economic activities of enterprises, as well as the general level of consumption of fish products by the population has been revealed. The study based on quantitative analysis complements the existing economic theory with new empirical data necessary to clarify the current directions of development of the country’s fisheries complex for its sustainable development.The results of the study: the actual catch of fish in Russia, which reached its historical maximum in modern history of 5.3 million tons in 2023, with simultaneously high levels of exports of fish products, provided an increased level of profitability of economic activities of enterprises and an increase in their financial independence in comparison with other sectors of the economy, however, the studied trends in the development of the fisheries complex were not broadcast in advance the increase in consumption of fish products by the population, in particular, from 2010 to 2022.Practical significance: the obtained research results and empirical data can be used by the authorities in developing relevant directions for the sustainable development of the country’s fisheries complex.
Integrated assessment of the economic efficiency of commercial fish farming
Authors: Usolov E. V. , Truba A. S. , Tyupakov K. E. , Akimov E. B. 
Published: September 2024

The purpose of the work: Conduct an integrated assessment of the economic efficiency of commercial fish farming.Materials and methods: The information base of the study was made up of statistical and operational materials on commercial fish farming of the Central Federal District of Russia (CFD) for 2015–2021. The main research methods were the monographic method, the method of analyzing the production and economic activities of the Central Federal District through scientific approaches, as well as the method of interpreting the results of the study.The result based on the developed methodology, an analysis of the economic efficiency of commercial fish farming in the Central Federal District of Russia (CFD) was carried out on the basis of the use of a complex (integral) indicator, which allowed identifying the main factors affecting the level and dynamics of the economic efficiency of commercial fish farming in the CFD. The degree of influence of particular indicators on the economic efficiency of production is shown — labor productivity, material output, capital.The practical significance it is possible to use a complex indicator in the analysis of production and economic activity, which allows determining reserves for improving the efficiency of using production resources — living and past labor. The complex indicator can also be used in the development of current options and long-term production plans, followed by the selection of the most effective option.
Nutrition of the Baikal seal and its role in the trophic structure of the Baikal ecosystem
Authors: Peterfeld V. A. , Petrov E. A. 
Published: September 2024

The purpose of the work was to give as complete an overview as possible of the currently available publications related to the nutrition of the Baikal seal (Pusa sibirica).More than 50 sources devoted to the stated topic served as materials for writing the review.The results of the analysis of published sources showed that the Baikal seal feeds mainly on 4–6 species of small pelagic fish throughout the year, and the main food is two species of golomyankas of the Comephoridae family. The hypothesis according to which the well-being of the species is largely determined by the use of the pelagic crustacean Macrochectopus branickii for food does not stand up to criticism and is unlikely to reflect the real picture. The distribution of the Baikal omul is such that it does not exclude, but does not in any way contribute to the fact that the seal consumes it in significant quantities. However, the consumption of salmonids as food has become more frequent in recent years (the reasons for this cannot be established), but even now these fish constitute <3% of the biomass of fish consumed by the entire population of the Baikal seal per year. All adaptive morphophysiological, anatomical and behavioral features of the species clearly indicate that the seal has developed a food strategy aimed at the effective production and utilization of the above-mentioned fish species.Conclusion: the basis of the diet of the Baikal seal is made up of small non-commercial pelagic fish species, therefore, even with a large population, seals cannot be the reason for the reduction in commercial omul stocks.The practical significance of the work lies in the fact that its conclusions must be taken into account when developing rules and strategies for exploiting the Baikal seal population.
Dynamics of the age composition of the red king crab males in the Barents Sea with account of probability molt
Authors: Buyanovskiy A. I. , Stesko A. V. 
Published: September 2024

The aim of the research was improvement of the algorithm of age determination for red king crab males in the Barents Sea, by taking into account the molting probability.Materials were the data of research surveys and fisheries monitoring obtained in 2001–2022 and combined in 54 data sets, as well tagging data published in open press.As results the previous algorithm which allowed establish the age composition of the red king crab males catches was improved. The parameters of the model of the dependence of the probability of molting on the width of the carapace, which was established earlier according to the tagging data, were changed. The modified model allowed to improve the adequacy of the estimates by reducing the values of the approximation error. Compared to the previous estimates of the age composition, the account of the probable molting history did not lead to a significant revision of the results: all noticeable generations remained the same as before, the time for recording a generation in catches however increased from 10 to 12 years. The parameters of the proposed model are the closest to those for the Kikhchik subpopulation of the red king crab off the Western Kamchatka. The contradiction associated with the discrepancy in the assessment of the maximum age of both the generation and individual specimens is discussed.Practical value. The obtained results can be applied for the red king crab stocks assessment with the help of cohort models.
The association of certain lipid metabolism indicators and light regimes in salmonids and cyprinids in aquaculture
Authors: Nemova N. N. , Provotorov D. S. , Murzina S. A. 
Published: September 2024

Purpose of the review: analysis of the effect of the photoperiodic factor based on indicators of lipid metabolism in Salmonid and Cyprinid fish species.Methods used: comparative analysis of literature and own experimental data.Results: The length of daylight (photoperiod) is one of the most important abiotic factors affecting the behavior, reproduction, metabolism, growth and development of fish. The changes in the lipids and fatty acid constituents execute a significant role in the adaptation of aquatic organisms to new light conditions. Certain parameters of lipidogenesis can serve as a reliable indicator of the normal route of metabolic processes in the organism. It is widely known that photoperiod regimes are used in aquaculture to optimize the cultivation of various species of aquatic organisms, including the most common Cyprinids and Salmonids. The specificity of the reaction of lipid metabolism to the effects of various lighting modes is shown: in cyprinids, the reaction can be multidirectional depending on the species (including its absence), while in Salmonids on example of Atlantic salmon, a change in the lipid profile in the direction of smoltification is observed. The role of combining the photoperiod with other factors, such as feeding and climatic features of the region, are discussed.Significance: The results can contribute to a better understanding of the adaptive processes in fish and optimize the conditions for their artificial rearing.
USO DO INFILTRANTE RESINOSO (ICON®) NO TRATAMENTO CONSERVADOR DE LESÕES DE MANCHAS BRANCAS: REVISÃO INTEGRATIVA
Authors: Silva Isadora Francielle , Borges Daniella Cristina , Dias Heitor Menezes , Pereira Leonardo Bíscaro , Reis Lorene Queiroz Casali , Mendonça Marcos Bilharinho de , Andrade Rodrigo Soares de , Silva Ivania Aparecida Pimenta Santos 
Published: September 2024

A odontologia minimamente invasiva visa preservar a estrutura dentária saudável e prioriza abordagens conservadoras às intervenções mecânicas. A cárie dentária, condição comum, pode afetar significativamente a qualidade de vida se não tratada. Além das cáries, condições como hipoplasia do esmalte, fluorose e hipomineralização molar-incisivo também causam manchas brancas nos dentes. A técnica de resina infiltrante promete oferecer uma solução eficaz para tratar essas lesões, preenchendo os espaços interprismáticos do esmalte e impedindo a progressão da cárie, melhorando a estética e a resistência dental. Portanto, o objetivo deste estudo foi analisar, por meio de uma revisão integrativa da literatura, a eficácia do uso do infiltrante resinoso (ICON®) no tratamento conservador de lesões de manchas brancas, seguindo princípios da odontologia minimamente invasiva. Esta pesquisa consistiu em uma revisão integrativa de literatura de natureza básica, abordagem qualitativa, objetivo exploratório e modalidade bibliográfica. As plataformas utilizadas para pesquisa foram PUBMED/MedLine, Scielo e BVS, buscando artigos publicados nos últimos 5 anos (2019-2024). O infiltrante resinoso ICON® é bastante eficaz na paralisação, remineralização e mascaramento de manchas brancas de diferentes causas. Seus resultados a longo prazo têm sido positivos, sem impactos significativos na cor, estabilidade, microdureza, brilho e lisura. Além disso, por ser uma técnica rápida, indolor e minimamente invasiva, tem uma boa aceitação pelos pacientes, que se demonstram satisfeitos com a tranquilidade do procedimento e seus resultados.
Análise hospitalar dos casos de asma em crianças e adolescentes no Brasil
Authors: De Carvalho Vieira Jessica Tayná , De Oliveira Silva Bibione Tercia , Melo de Castro Milena , Fraga Souza Silva Bernard , Azevedo Mendonça Cruz Estefany , Figueiredo Sales Isabela , Amorim Pizzani Laina , Carvalho  de Araújo Casaes Gabriella , Santos Andrade João Gabriel , Duarte de Avellar Netto Newton Murillo , SILVA DE ANDRADE FILHO ÁUREO PEDRO , Costa Santos de Menezes Camila 
Published: September 2024

Introdução: A asma é uma condição respiratória complexa que, na grande maioria das vezes, é diagnosticada na infância. Tal condição crônica exige uma compreensão abrangente para proporcionar um manejo eficaz e melhorar a qualidade de vida dos indivíduos acometidos, principalmente da faixa etária infantil, uma vez que é uma população imunologicamente vulnerável. Em relação a sua epidemiologia, é uma doença de preocupação mundial e o Brasil ocupa o oitavo lugar no ranking dos países com as maiores prevalências de asma, sendo considerado, portanto, um problema de saúde pública. Diante desse contexto, o objetivo deste estudo é analisar o perfil epidemiológico por asma em crianças e adolescentes, em todas as idades, no Brasil e suas regiões, entre 2013 e 2023. Metodologia: Trata-se de um estudo epidemiológico realizado tendo como embasamento os dados do departamento de informação de saúde do SUS (Sistema Único de Saúde). As variáveis utilizadas foram: internações hospitalares, óbitos, faixa etária, cor/raça, sexo, gastos hospitalares e macrorregião de saúde. Ademais foi realizada uma revisão de literatura para embasar o estudo, utilizando as bases de dados: Pubmed e SciElo. Os descritores utilizados foram: asma brônquica, asma ocupacional, asma induzida por exercício. Resultados: 652.602 internações ocorreram por asma em crianças e adolescentes. A região Nordeste foi responsável pelo maior número de internações e pelo maior número de óbitos. É mais comum em crianças de 1 a 4 anos. A média de internação é de 3 dias e mais indivíduos do sexo masculino são hospitalizações por asma. Conclusão: A alta prevalência da asma entre os jovens destaca a necessidade de medidas eficazes para aprimorar o controle e mitigar os efeitos desta condição, bem como de mais estudos científicos e pesquisas para criação de estratégias pa a promoção de saúde de indivíduos com asma.