bluuebunny/crossref_metadata_2025_split huggingface dataset:
Features of the trace element composition of sockeye salmon (Oncorhynchus nerka Walbaum, 1792) from the Eastern Kamchatka bays
Authors: Христофорова Н.К. , Литвиненко А.В. , Данилин Д.Д. , Салимзянова К.Р. , Гамов М.К. 
Published: September 2024

Впервые изучен микроэлементный состав (содержание железа, цинка, меди, никеля, свинца и кадмия) нерки, выловленной в Авачинском и Камчатском заливах. Проведено сравнение полученных данных с опубликованными сведениями для сахалинской горбуши, нагуливавшейся в океане или в Японском море. Показано, что восточно-камчатская нерка отличается низкими концентрациями Ni и Pb, но на порядок большим содержанием Zn и Cu, чем горбуша, пришедшая из океана и прошедшая через Курило-Камчатскую геохимически импактную зону. Количество Zn и особенно Cu в икре в несколько раз превосходит содержание этих элементов в семенниках самцов нерки. Различия в содержании микроэлементов в лососях обсуждаются с позиций их биологии, экологии (характера мест нагула), условия которых заметно различаются и зависят от природныхи антропогенных факторов.
This paper is the first study of the trace element content (iron, zinc, copper, nickel, lead, and cadmium) of sockeye salmon caught in Eastern Kamchatka (Avacha and Kamchatka Bays). The results obtained were compared with published data for Sakhalin herds of pink salmon feeding in the open waters of the Pacific Ocean and in the Sea of Japan. The East Kamchatka herds of sockeye salmon are characterized by low concentrations of Ni and Pb, but the content of Zn and Cu are an order of magnitude comparing to pink salmon came here from the open ocean waters and migrating through the Kuril-Kamchatka geochemical impact zone. The content of Zn and especially Cu in the sockeye salmon eggs are several times higher than that in the male testes. Differences in the content of trace elements in salmons are discussed in regard to their biology and ecology, i.e., nature of feeding grounds, where conditions are markedly different and depend on natural and anthropogenic factors.
Persistent organochlorine pollutants in cyprinids from the Lake Khanka (Spassky District, Primorsky Krai,Russia)
Authors: Донец М.М. , Коженкова С.И. , Боярова М.Д. , Гумовская Ю.П. , Кульшова В.И. , Боровкова А.Д. , Цыганков В.Ю. 
Published: September 2024

Приведены концентрации хлорорганических пестицидов (ДДТ, ГХЦГ) и полихлориро- ванных бифенилов (28, 52, 155, 101, 118, 143, 153, 138, 180, 207 конгенеры) в шести видах карпо- вых рыб оз. Ханка. Хлорорганические соединения обнаружены во всех исследованных образцах. Доминирующей группой поллютантов были изомеры ГХЦГ, составляющие в среднем 70% от всех обнаруженных пестицидов. Доля α-ГХЦГ варьировала от 8 до 95%. Среди ДДТ и его метаболитов наиболее определяемым были o,p’- и p,p’-ДДЕ (в среднем – 10–100 и 15–100% соответственно). ПХБ во всех рыбах были представлены в основном низкохлорированными конгенерами – 28 и 52. По обнаруженным изомерам можно предположить давнее загрязнение оз. Ханка. Сравнение с водоемами южного Китая и Хорватии показало значительно более высокие уровни аккумуляции ГХЦГ и более низкие – ДДТ и ПХБ. При сравнении данных с требованиями нормативных докумен- тов Россиии Китая не выявлено случаев превышения допустимых концентраций.
Present study provides data of organochlorine pesticides (DDT, HCH) and polychlorinated biphenyls (28, 52, 155, 101, 118, 143, 153, 138, 180, 207 congener) content in six carp fi from Lake Khanka. Organochlorine compounds are found in all studied samples. HCHs isomers were dominant, constituting on average 70% of all pesticides detected. α-HCH content varied from 8 to 95%. Among DDTs, o,p’- and p,p’-DDE were predominant (on average 10–100 and 15–100%, respectively). PCBs content in all fi samples was primarily presented by low-chlorinated 28 and 52 congeners. Detected isomers evidence on the long-term pollution of Lake Khanka by persistent organic pollutants. Compare to southern China and Croatia, fi from Lake Khanka showed signifi higher levels of accumu- lation of HCH and lower levels of DDT and PCB. When comparing the data with the requirements of regulatory documents in Russia and China, no cases of exceeding maximum permissible concentra- tions were identifi
Abolição e Racismo nas imagens de Angelo Agostini
Authors: Maringoni Gilberto 
Published: September 2024

A campanha abolicionista (1870-1888) foi pautada por intensa disputa política nos principais centros urbanos do Brasil, com forte participação da imprensa. Mesmo tendo alcance limitado por seu caráter artesanal e pela elevada taxa de analfabetismo registrada no Censo de 1872, surgiram variadas publicações voltadas para a causa, que galvanizou a opinião pública e os próprios escravos. O presente trabalho volta-se para o papel da imprensa ilustrada e para seu mais destacado autor, o caricaturista ítalo-brasileiro Angelo Agostini (1843-1910). Passado o 13 de maio de 1888, o autor, além de outros abolicionistas, revelam-se racistas e preconceituosos em relação aos negros. Para entender o aparente paradoxo, é preciso mergulhar no que foi o abolicionismo branco, nas causas objetivas da libertação, nas formulações sobre branqueamento e na situação do negro após a Abolição
Analisis Faktor Kemampuan Berbahasa yang Mempengaruhi Self Regulation Learning Siswa di Sekolah Dasar
Authors: Rahayu Rofita , Abidin Yunus 
Published: September 2024

Self Regulation Learning (SRL) harus dimiliki siswa agar siswa mampu mengembangkan kesadaran belajarnya sendiri dalam proses pembelajaran. Penelitian ini bertujuan untuk menganalisis faktor kemampuan berbahasa yang mempengaruhi Self Regulation Learning (SRL) siswa di sekolah dasar. Penelitian ini menggunakan metode kuantitatif dengan pendekatan survey korelasional dengan analisis jalur. Metode analisis jalur menggunakan Partial Least Aquare - Structural Equation Modeling (PLS-SEM) dengan aplikasi yang bernama SmartPLS 4.0. Hasil penelitian ini menunjukkan bahwa faktor Language Aptitude/bakat bahasa memberikan pengaruh positif dan signifikan sebanyak 49% pada Self Regulation Learning (SRL). Artinya dapat disimpulkan kesadaran siswa dalam belajar yang dipengaruhi oleh bakat bahasa sehingga mampu meningkatkan kemampuannya dalam menyimak suatu pelajaran.Keywords: Self regulation learning, kemampuan berbahasa
PENGGUNAAN PUPUK KOMPOS TANDAN KOSONG KELAPA SAWIT TERHADAP PERTUMBUHAN TANAMAN DAN KUALITAS TANAH: STUDI LITERATUR
Authors: Wibowo Vikto Agus , Santoso Handoko , Sutanto Agus 
Published: September 2024

Kelapa sawit merupakan komoditas perkebunan dengan prospek yang baik dalam hal memproduksi minyak nabati.. Produk sampingan kelapa sawit berupa limbah organik Tandan Kosong Kelapa Sawit memiliki andungan unsur makro dan mikro hara tersebut adalah 42,8% karbon (C), 2,9 % kalium oksida (K2O), 0,8% natrium (N), 0,22% fosfor pentoksida (P2O5), 0,30% magnesium oksida (MgO), 23 ppm Cu, dan 51 ppm Zn. Pemberian pupuk kompos tandan kosong kelapa sawit (TKKS) dalam pememliharaan tanah, memiliki potensi meningkatkan pH tanah dan C-organik. Metode yang digunakan adalah studi literatur dengan kriteria inklusi jurnal 5 tahun terakhir. Artikel ini bertujuan untuk memberikan informasi kepada pembaca terkait kompos tandan kosong kelapa sawit, penggunaan kompos TKKS terhadap perbaikan sifat tanah, dan penggunaan kompos TKKS terhadap pertumbuhan tanaman . Hasil kajian literatur ini adalah kompos TKKS merupakan pupuk organik yang dapat meningkatkan produktivitas pertanian dan pengendalian limbah produk sampingan. Kompos TKKS berperan penting dalam perbaikan tanah seperti sifat fisik dan kimianya. Kompos TKKS berperan dalam pertumbuhan tanaman karena kandungan unsur mikro dan makro hara seperti N, P, K, Cl, dan Mg.
How hemodialysis patients manage dietary and fluid intake? A descriptive qualitative study
Authors: Lenggogeni Devia Putri , Malini Hema , Maisa Esthika Ariany , Mahathir Mahathir 
Published: September 2024

Background: Managing dietary and fluid intake for hemodialysis patients is crucial, but it is also challenging. Non-compliance to diet and fluid intake restriction may increase a patient’s morbidity and mortality. Exploring the experiences of hemodialysis patients who successfully manage those regimens may provide new insight to develop more effective strategies.
Purpose: The study aimed to explore the experiences of hemodialysis patients who successfully manage the dietary and fluid intake restrictions.
Methods: A descriptive qualitative study was applied. Semi–structured interviews were conducted with 15 hemodialysis patients purposively recruited from a hemodialysis unit of a public hospital in West Sumatera, Indonesia. Interviews were transcribed verbatim and thematically analyzed to describe the phenomenon of hemodialysis patients. The study was reported following the COREQ guidelines.
Results: Most participants in this study are female, aged between 38 – 63 years and length of hemodialysis 4 months – 6 years. The finding of this study was that the essential themes that explained how hemodialysis patients adhere to fluid and dietary restrictions are 1) strategies for restricting fluid and dietary intake, 2) motivation to restrict fluid and dietary intake, 3) fear of the effects of non-adherence to fluid and dietary restrictions and 4) social support.
Adoption drivers of organic vegetable farming practices among vegetable farmers in Oyo State, Nigeria
Authors: Ogungbaro Oke Oyeleye , Olaiya Kazeem Ayobami 
Published: September 2024

Abstract
The practice of organic agriculture (OA) in Nigeria has undergone expansion due, among other things, to consumer interest in food safety issues. Organic Farming (OF) is a holistic production management system that promotes and enhances agro‑ecosystem health, including biodiversity, biological cycles, and soil biological activity. The study investigated adoption drivers for organic vegetable farming practices among vegetable farmers in Oyo State, Nigeria. A total of 120 organic vegetable farmers were sampled through a multistage sampling procedure, and survey questions were administered. Data were analysed using frequency counts, mean, and Ordinary Least Square (OLS). The majority of farmers had a good knowledge of Organic Vegetable Farming Practices (OVFP), which aids adoption and is a good signal for economic returns and sustainable livelihoods. The most rated of the three benefit domains was health, which averagely was rated high (x̅ = 1.38), while economic (x̅ = 1.04) and environmental conservation benefits (x̅ = 1.00) were both rated average; with enhanced good health and long life; reduced climate change effects, as well as generation of greenhouse gases and higher premiums in the marketplace identified as top health, environmental conservation, and economic benefits, respectively. Although the majority of farmers highly adopted OVFP, however, a closer examination of the few practices that the majority of the farmers did not adopt was of health and environmental significance. Farmers’ age, education, farm size, household size, knowledge, health, and economic benefits of OF were important drivers of adoption and practices of OF among Oyo State, Nigeria vegetable farmers. OF, therefore, is a sustainable agricultural approach that holds great potential for effectively contributing to local food security, the health of citizens, increased family health, and environmental standards.
Machine politics: The cultural science of permissionless systems
Authors: Rennie Ellie 
Published: September 2024

Abstract
The survival of permissionless blockchains is typically cast as a cryptoeconomic security problem for mechanism designers to resolve. This essay argues that, long-term, these networks may require something that looks more like a UNESCO protection convention for machine culture than an equation. Ethereum’s machine culture is observable through the formation of a “’we’-group” (Hartley & Potts, 2014, p. 76), which is necessary for the establishment of common knowledge. While entry to the group is permissionless, maintaining membership boundaries demands active contributions from validator nodes. The paper discusses concerns that Ethereum’s consensus may be used for purposes beyond itself, making Ethereum vulnerable to external, non-machine political forces. As this begins to manifest, the need to safeguard Ethereum’s intrinsic machine culture becomes apparent—not merely for the sake of the blockchain but to maintain a stable foundation for emerging digital economies and governance structures.
A study to explore the motives of investors to invest in derivative markets: A PLS-SEM approach
Authors: Sanghvi Manisha , Sharma Pankaj , Chandani Arti 
Published: September 2024

Abstract
The objective of the study is to explore the motives of investors to invest in derivative markets. It is a quantitative study where a survey method was used to collect data from the investors using a probability sampling method. The data was analyzed using PLS-SEM to test the conceptual model. The results of the study show that speculation, hedging, and financial literacy are strong predictors of investors’ motives to invest in the derivatives market. The R2 was 0.447 implying speculation, hedging, and financial literacy explain 44.7% of the variance of the dependent variable, that is, the motives of investors to invest in equity derivatives, and the adjusted R-square is 0.432 (43.2%) which validates the model. Few studies explore the reasons to invest in derivatives using secondary data. However, to the best of the author’s knowledge studies exploring the motives of investors are rare, and there have been none using primary data from an Indian perspective. The study provides empirical evidence that could be useful to companies, investors, brokers, and policymakers to understand the motives of investors to invest in derivatives.
Society’s well-being and firm profitability. The case of Poland
Authors: Ratajczak Piotr , Nowicki Jarosław , Szutkowski Dawid 
Published: September 2024

Abstract
The aim of the study is to examine the impact of society’s economic well-being determinants – above and beyond the firm-specific and macroeconomic determinants – on firm profitability in Poland. Based on stakeholder theory we hypothesized that the economic well-being of society can influence firm performance. Therefore, we included real wage and salary growth, internal migration, international migration, and natural increase variables in the regression models. We applied four models with different sets of variables using pooled ordinary least square regression, as well as fixed and random effects regressions with robust standard errors clustered at the firm level. The dataset covers the period from 2004 to 2021, comprising 5400 firm-year observations from Poland in the wholesale and retail trade sector. We found that firm profitability generally increases with higher inflation and exchange rate depreciation. Moreover, in models including society’s economic well-being variables, GDP growth is no longer a significant determinant of firm profitability. Most importantly, the study demonstrates a positive relationship between real wage and salary growth and firm profitability. We also found that international migration is negatively associated with firm profitability. Regarding natural increase, the study suggests that it has a positive effect on return on equity, but not on return on assets.
Public and private investments and economic growth in Ghana and Kenya
Authors: Mose Naftaly , Fumey Michael Provide 
Published: September 2024

Abstract
A general conception is that investment induces economic growth, but there is still debate over which type of investment contributes more to economic growth. The disaggregation of investment into public and private components allows estimation of the impact of the two types of investments on economic growth. This research, therefore, empirically estimates the relationship between each investment component against economic growth by constructing panel data for Ghana and Kenya from 1991 to 2022. The empirical strategy adopted in this study can be divided into three major stages. First, the LLC unit root test in the panel series is undertaken. Second, if integrated in the same order, a Kao co-integration test is conducted. Finally, if the series is co-integrated, the vector of cointegration in the long run is estimated using the dynamic ordinary least squares (DOLS) method. Our estimation results, based on the panel cointegration approach confirm a long-run relationship between the study variables. Further analysis shows that public investment can promote economic growth in the long run. In contrast, the results indicate that private investment can obstruct growth. The study has shown that private investment did not always increase economic growth in Ghana and Kenya. The study findings indicate that public investment is more efficiently allocated in Ghana and Kenya than private investment, suggesting the best economic strategy is for private investment to be complementary and promote higher public investment to improve public sector productivity. Therefore, policymakers should focus on creating a favourable investment climate, providing fiscal stimulus and promoting public-private partnerships to enhance infrastructure development and stimulate private -sector investment, which can sustain long-term economic growth.
Dynamic Interrelationships among Bitcoin, Bonds, and Sectoral Indices in India: Evidence from Pre- and Post-COVID-19
Authors: Sehgal Shivam , Singh Jaspal 
Published: September 2024

Abstract
This study employs the Maximal Overlap Discrete Wavelet Transform technique to analyze the wavelet-based correlations between Bitcoin, bond markets, and thirteen sectoral stock indices in India over the period from 2017 to 2023, focusing on the comparison of pre-and post-COVID-19 pandemic effects. The aim is to investigate the dynamic interrelationships and to understand the impact of the COVID-19 pandemic on these financial assets. The study period is divided into pre-COVID-19 and post-COVID-19. Findings from the study reveal a minimal negative correlation between Bitcoin, bond markets, and the sectoral stock indices in the pre-COVID era, indicating a lack of significant interdependence among these assets. However, the scenario changes markedly in the post-COVID period, shifting towards a positive correlation. This shift suggests that the COVID-19 pandemic has altered the relationship dynamics, leading to a more interconnected financial environment where movements in Bitcoin have begun to show a significant positive correlation with the movements in bond and sectoral stock indices in India. The study contributes to the existing literature by providing empirical evidence of how external shocks, such as the COVID-19 pandemic, can influence the correlation patterns among different financial assets. It highlights the importance of considering the changing dynamics in financial market correlations for investors, policymakers, and researchers in portfolio diversification, risk management, and financial stability analysis. Further, it underscores the role of alternative investments like Bitcoin in the evolving market landscape, particularly in response to global crises.
The contribution of analytical procedures in supporting corporate governance: A field study in Algeria
Authors: Farouk Didaoui Mohamed , Ismail Boughazi 
Published: September 2024

Abstract
This study aimed to shed light on the contribution of analytical procedures (APs) to supporting corporate governance. This was achieved through a field study in which a questionnaire was created and disseminated to a random sample of external auditors in Algeria. The data collected underwent analysis using the SPSS. The study concluded that APs play a crucial role in bolstering corporate governance by analyzing the company’s continuity capability and identifying financial problems facing the companies. In addition, APs enhance the quality and efficiency of external auditing, especially considering auditing as one of the key mechanisms that support corporate governance.
Cigarette taxation and consumption in The Czech Republic. Have these factors influenced tax revenue?
Authors: Krajňák Michal 
Published: September 2024

Abstract
The article evaluates the development of the tax burden on cigarettes in the Czech Republic from 1993 to the end of 2023. Tax burden is represented by effective tax rate. The research results show that the tax burden on these products is still increasing. Not only does the tax burden increase, but so does the price of these products. The regression analysis results show that quantities such as the price of cigarettes, the effective tax rate or the amount of cigarettes consumed are factories that positively influence tax revenue. Since the tax rate or the price of these products constantly increases, the tax revenue is also increasing. It increased almost six- fold over the entire analyzed period. At the same time, it was found that other factors, such as the average wage, also affect the tax revenue. It is necessary to consider that the cigarette consumption has been showing a downward trend in recent years. However, the reason is not only the increasing tax burden and the price of these products but also the transition of consumers to so-called e-cigarettes. A reduction in cigarette consumption may be reflected in the future by reducing healthcare costs, which will create potential reductions in public health insurance payments.
Preparation of the Digital Elevation Model using open source Geographic Information Systems tools for 3D prints
Authors: Chwiałkowski Cyprian , Zydroń Adam 
Published: September 2024

Abstract
The presentation of landforms in two-dimensional graphics may not always be clear and understandable to every viewer. The presentation of landforms, as well as other types of characteristics and issues in three-dimensional space can bring many advantages in the process of better understanding of the surrounding reality. The primary purpose of this research is to put forward a simple scheme, accessible to any Geographic Information Systems user, for generating 3D physical terrain models for any area of the Earth. The presented scheme can be used anywhere in the world, however, for the purpose of illustrating its capabilities, a case study of a selected area – the Tatra Mountain range – was conducted in this paper. As part of the study, a 3D model was developed based on a Digital Elevation Model obtained from an open source, i.e. MapTiler. An indisputable advantage of the study is that the designed process flow in its structure takes into account only generally available tools and software (the model was prepared in the QGIS program). However, a certain limitation is the process of printing itself, which depends on the availability of specialized printing equipment. In this case study, FDM (Fused Deposition Modeling) technology was used for printing, and the model itself was prepared on a Creality Ender 7 printer. The proposed flowchart, on the one hand, unifies and simplifies the process of creating physical 3D models, while on the other hand, it provides opportunities for GIS users and developers to develop the proposed solution.