bluuebunny/crossref_metadata_2025 huggingface dataset:
New kink-type solution of the equation for artificial axon
Authors: Knyazev M. A. , Klimovich Т. A.
Published: April 2024

In the paper a (1 + 1)-dimension equation of motion for the artificial axon is considered. The artificial axon is a dynamical structure like a neuron. They are widely used in biophysics, for example, in studying the physiological processes. A topological non-trivial solution of one-kink type for this equation is constructed in an analytical form. The modified direct Hirota method for solving the nonlinear partial derivatives equations is applied. The special cases are considered for different voltages on the contacts of axon.
Freund – Nambu cosmology with the massless scalar field
Authors: Dudko I. G. , Vyblyi Yu. P.
Published: April 2024

Within the framework of the generalization of Freund – Nambu scalar-tensor theory of gravity, a massless scalar field is considered, the source of which is the trace of its own energy-momentum tensor. For the cosmological problem, numerical solutions of field equations were obtained, with the help of which the dependencies of the Hubble parameter and the photometric distance to the observed sources on red-shift were constructed. To the consistency of the models with observational data, contours of confidence intervals for model parameters were constructed.
Charcoal-containing microwave electromagnetic radiation absorbers with relief surface
Authors: Boiprav O. V. , Belousova E. S. , Bogush N. V. , Savanovich S. E. , Kasperovich M. M. , Gusinsky A. V. , Zakharov I. A.
Published: April 2024

A new technology for manufacturing microwave electromagnetic radiation (EMR) absorbers characterized by a geometrically inhomogeneous surface is presented. The novelty of the presented technology lies in the use of radiotransparent polymer forms with hemispherical depressions of the same volume, which are the component for the formation of the surface layer of absorbers. The technology consists in filling these molds with a mixture of powdered activated (birch) charcoal and the binder in the liquid phase and further drying it in the forms. Compared with analogues, the developed technology is characterized by low complexity of reproduction. Most of the time required to implement the presented technology is associated with the drying process of a mixture of powdered activated birch charcoal and a binder. The experimentally established patterns of changes in the values of electromagnetic radiation reflection and absorption coefficients in the frequency range 1.0–28.0 GHz of the absorbers manufactured in accordance with the presented technology are provided, depending on the type of binder contained in them (polyvinyl acetate aqueous solution, gypsum aqueous solution, polyurethane mastic). It was determined that the most effective of the EMR absorbers studied in the course of establishing the indicated patterns are those ones that contain an aqueous solution of polyvinyl acetate. Electromagnetic radiation absorption coefficient values in the frequency range 1.0–28.0 GHz of such absorbers vary from 0.75 to 0.99. In addition, the mass per unit area of such absorbers is 1.5–2.0 times less than the mass per unit area of absorbers containing an gypsum aqueous solution or polyurethane mastic. Microwave EMR absorbers manufactured using the presented technology are characterized by higher mechanical strength, as well as lower cost compared to analogues and are recommended for use in the creation of anechoic chambers.
Analysis of the influence of the aluminosilicate sorbents on the immobilization of 137Cs in the cement compound and its mechanical strength
Authors: Leontieva T. G. , Maskalchuk L. N. , Baklay A. A. , Makovskaya N. A.
Published: April 2024

Studies have been carried out to determine the main parameters characterizing the quality of cement compounds: 137Cs leaching rate and mechanical strength. As sorption additives, aluminosilicate sorbents were used, obtained from clay-salt slimes of JSC “Belaruskali” as a result of water and acid-water treatment to increase the content of the clay mineral illite, which is the main component in the composition of aluminosilicate sorbents. Model aqueous solutions of 137Cs were used as liquid radioactive waste, including those with a NaNO3 content of 150 g/dm . It has been established that the use of aluminosilicate sorbents makes it possible to reduce the rate of 137Cs leaching from cement compounds, which indicates a higher degree of 137Cs fixation in the matrix material compared to samples of cement compounds without sorption additives. The efficiency of the aluminosilicate sorbent for 137Cs immobilization during cementation of a model solution of liquid radioactive waste is 3 times higher than the well-known and widely used sorption additive (bentonite clay from the 10th Khutor deposit, Khakassia, Russia). Determination of the mechanical strength of samples of cement compounds with the addition of 5–15 % aluminosilicate sorbents showed that this indicator is 8–9 times higher than the standard value (4.9 MPa). The optimal dose of a sorption additive is 5–10 wt.% of the weight of Portland cement, which does not cause a significant decrease in the strength of the cement compound compared to a compound without the use of an additive and, at the same time, will provide a high level of 137Cs immobilization. The obtained research results indicate the prospects of using the developed aluminosilicate sorbents as a sorption additive for 137Cs immobilization when handling liquid radioactive waste.
Del ámbito nacional al internacional: la evolución de la jurisprudencia constitucional colombiana en materia de tutelas contra laudos arbitrales
Authors: Melo Rubiano Edilberto , Cifuentes Ghidini Francesca
Published: April 2024

This article proposes a review of the Colombian Constitutional Court jurisprudence regarding theadmissibility of the “tutela action” against arbitral awards. Firstly, it reviews the jurisprudence thatdeveloped the doctrine of the “vía de hecho” and the tutela against judicial sentences. Secondly,it analyzes the extension of the doctrine of tutela against sentences to domestic awards. Finally, itexamines the SU-500/15 and T-354/19 judgments that set a precedent in the Colombian constitutionaljurisprudence by allowing the admissibility of the tutela action against international awards seated in Colombia, which generates the need to establish different rules when it comes to national and international awards and the implications in terms of subsidiarity in relation to the action to set aside arbitral awards.
PENGARUH COMPUTER ANXIETY, COMPUTER ATTITUDE, DAN PEMAHAMAN AKUNTANSI TERHADAP PENGGUNAAN SOFTWARE AKUNTANSI
Authors: Sadalipa Amrina Rosada , Nurabiah Nurabiah
Published: April 2024

Dengan kemajuan teknologi yang pesat mengharuskan mahasiswa khususnya mahasiswa akuntansi untuk memiliki keahlian dalam menggunakan teknologi terutama komputer. Namun hal tersebut dapat menjadi kendala karena ada berbagai faktor yang memengaruhi keahlian seseorang dalam menggunakan teknologi. Riset ini bertujuan untuk mengetahui pengaruh kecemasan berkomputer, sikap berkomputer, dan pemahaman akuntansi terhadap penggunaan perangkat lunak akuntansi. Riset ini menggunakan pendekatan kuantitatif asosiatif. Pemungutan sampel menggunakan metode sensus di mana jumlah sampel sebanyak 286. Data diperoleh dengan menyebarkan kuesioner melalui Google Forms. Pengolahan data  menggunakan SmartPLS. Temuan menunjukkan bahwa penggunaan software akuntansi dipengaruhi secara negatif oleh computer anxiety. Di sisi lain, penggunaan software akuntansi dipengaruhi secara positif oleh computer attitude dan pemahaman akuntansi. Riset ini memberikan wawasan terkait tingkat kecemasan, sikap terhadap teknologi komputer, dan pemahaman akuntansi yang dapat memengaruhi penggunaan perangkat lunak akuntansi. Hasil penelitian ini dapat memberikan implikasi dalam pengembangan teknologi informasi akuntansi dengan meningkatkan persepsi positif terhadap teknologi dan pengembangan kurikulum akuntansi.
A EDUCAÇÃO INFANTIL E A POLÍTICA NACIONAL DE ALFABETIZAÇÃO APROVADA EM 2019: IMPLICAÇÕES E DISSENSOS PARA A ALFABETIZAÇÃO DE CRIANÇAS NO BRASIL
Authors: Jesus Jorge Antonio Lima De , SOUSA CELITA MARIA PAES DE , CARDOSO JOSÉ CARLOS MARTINS
Published: April 2024

Este artigo buscou refletir sobre as implicações ocasionadas pela Política Nacional de Alfabetização - PNA, instituída no Brasil no ano de 2019, Ciência Cognitiva, a partir de “evidências científicas” contidas no relatório do National Early Literacy Panel (2009) e que traz prescrições acerca do processo de alfabetização de crianças no Brasil.. Trata-se de uma pesquisa de abordagem qualitativa exploratória, a partir da revisão bibliográfica e documental, realizada nos diretórios da ANPEd, CAPES, SciELO e da Revista Brasileira de Alfabetização – ABAlf, realizado no período de outubro de 2020 a junho de 2021. Neste estudo observou-se a implementação de um método de alfabetização único - o fônico, ocasionando dissensos na etapa da alfabetização de crianças no país, prescrevendo técnicas tradicionais ultrapassadas, apresenta um currículo de forma tecnicista e mecânica, formalizante e apolitizado; além de ratificar uma política, que adota um projeto de desmonte do Estado Brasileiro com um discurso "negacionista" que vem precarizando a Educação no país.
Operationalising effective coverage measurement in Ethiopia: a qualitative study
Authors: Lemma Seblewengel , Tesfa Anene , Getachew Fikreselassie , Achamyeleh Hiwot , Yeshanew Bantalem , Getachew Theodros , Marchant Tanya
Published: April 2024

Background

Efforts to improve the quality of maternal, neonatal and child health services have intensified in Ethiopia. Consistent with global recommendations, measuring only coverage of these health services is no longer sufficient to assess their impact on population health. As a result, interest has grown in effective coverage measures that combine service access and service quality into one metric. However, operationalising effective coverage measurement in settings like Ethiopia requires understanding the context and feasibility with available data and resources. Thus, this study aimed to explore the demand for effective coverage measurement among Ethiopian key stakeholders and identify the actions needed to enhance its implementation in Ethiopia’s healthcare system.

Methods

An explorative, qualitative study design was employed, and data was collected through semi-structured interviews. Nineteen key informants from national level, three regions (Amhara, Oromia and Gambela), and one administrative city (Addis Ababa) in Ethiopia, participated in the study from March to April 2023. Key informants were identified using a snowballing approach. This study received ethical approval from the London School of Hygiene and Tropical Medicine and the Ethiopian Public Health Institute ethical review boards.

Results

There is a strong demand for effective coverage measurement for decision making on health care quality in the Ethiopian health sector. The demand is characterised either for individual patient care or for tracking health system performance; currently, there is limited clarity on the distinction between these two needs. A strong sentiment exists for the use of routine health information system data for this purpose, although stakeholders acknowledge the limitations of this data source. To advance the effective coverage measurement agenda in Ethiopia, respondents recommend building confidence in the quality of data sources, the need for more guidance on how to generate effective coverage measures, and the need for government leadership to coordinate these efforts.

Conclusions

The strong demand for effective coverage measures and the positive policy environment encourages further testing of effective coverage measurement in Ethiopia.
Understanding how socioecological factors affect COVID-19 vaccine perceptions among adolescents: qualitative evidence from seven high-, middle- and low-income countries
Authors: Ramaiya Astha , Mmari Kristin , Borges Ana Luiza , Cabral Christiane , Mafuta Eric , Lulebo Aimee , Yu Chunyan , Pinandari Anggriyani Wahyu , Wilopo Siswanto Agus , Chipeta Effie , Hunersen Kara
Published: April 2024

Background

The number of studies examining family, community, institutional and policy factors on COVID-19 vaccine perceptions is limited, with most concentrating on high-income countries and using predominantly quantitative methods. To address this gap, the goal of this manuscript is to qualitatively explore these factors and how they shape adolescents’ perspectives on COVID-19 vaccines across diverse contexts.

Methods

Focus group discussions were conducted among adolescent populations (13 - 18 years) across seven countries: Ghent, Belgium; Sao Paulo, Brazil, Shanghai; China, Kinshasa, Democratic Republic of Congo (DRC); Semarang and Denpasar, Indonesia; Blantyre, Malawi and New Orleans, United States of America (USA). An inductive thematic analytical approach was used to understand the emerging themes across the different countries based on the study’s objectives.

Results

The study found that all influences were inter-connected and contributed towards vaccine perceptions among adolescents, which were largely positive except in the two African countries and to an extent in the USA. Family and community influences played a large role in vaccine perceptions, however, this differed by context. Our findings suggest adolescents’ perceptions about vaccines were more positive in countries with higher vaccination rates, i.e. China and Indonesia versus countries with lower vaccination rates i.e. Malawi and DRC. Vaccine mandates within schools, offices, and public places were also discussed with varying perceptions based on government trust.

Conclusions

Adolescents’ perceptions of the Covid-19 vaccine are based on a variety of elements, such as families, community, institutions, and policies. Prioritizing one or another path may not be sufficient to improve vaccine adherence during future pandemics, as we experienced with Covid-19. Strategies to make vaccine perceptions more positive among urban poor adolescents should address both family and community perceptions. However, policies and robust programs around immunization are still needed.
Student's anxiety level towards mathematics: Basis for intervention program
Authors: Mark Rogel Tumanlao Auguis  , Jayvee Eliserio Leron  , Sheenalyn Baduel Mondez  , Johne Llyod Ellaga Palencia  , Lady Claudette Garcia Rivera  , Jhon Jhon Pamilacan Zotomayor
Published: April 2024

This study, entitled Students’ Anxiety Level Towards Mathematics: Basis for Intervention Program, investigated Math anxiety among Liceo de Pagsanjan students via pre-interviews with teachers and students, utilizing random sampling of Grade 10 sections. The respondents of the study were composed of sixty-eight (68) Grade 10 students at Liceo de Pagsanjan. A quantitative method with online questionnaires was employed, analyzing data using Pearson r correlation and Chi-Squared correlation analysis to measure the anxiety level of the grade 10 students towards Mathematics. As the responses from the online questionnaires were converted into data, the mean, Pearson r, and chi-squared correlation analysis were used for statistical treatment. Significant links were found between students' experiences and Math anxiety, emphasizing the need for comprehensive support networks. This suggests that students' experiences have an impact on their anxiety levels about the subject. The significant relationship between experiences at home, school, and among peers underscores the need for comprehensive support networks. The "Math Anxiety Termination Program" (MATP) was proposed to address issues. However, Chi-Squared analysis showed no significant correlation between demographic factors and Math anxiety levels. Recommendations include tailored interventions and enhancing communication in a supportive environment. In light of the findings and conclusion, some recommendations, such as building upon the findings of this study and developing their own action plan or intervention program tailored to addressing math anxiety and making programs aimed at enhancing student communication and empathy, can also be adopted, creating a supportive environment where individuals feel heard and valued for their perspectives.
Transforming university records management: A comprehensive review of blockchain and self-sovereign identity applications
Authors: Muhammad Faizan  , Nayab Riaz  , Usman Saif
Published: April 2024

Traditional university records management systems often rely on centralized, fragmented, and vulnerable methods of data storage. This can compromise security, hinder efficient sharing of information, and limit students' ownership of their educational journeys. Blockchain technology, coupled with the principles of self-sovereign identity (SSI), offers the potential to revolutionize how student records are created, stored, and shared. This review paper synthesizes emerging research and explores the transformative implications of blockchain and SSI for university records management. It examines how these technologies streamline administrative processes, enhance data security and trustworthiness, empower students to control their narratives and foster collaboration between educational institutions. Key benefits, technical considerations, and real-world implementation challenges are critically analyzed. The paper concludes with a call to action for universities, technology providers, researchers, and policymakers to collaborate on innovative solutions. This collaboration will pave the way for a more secure, student-centric, and efficient future for educational records management.
Physicochemical quality assessment of the Kushiara River Water in Bangladesh
Authors: Md. Mahabub Alam  , M. Habibur Rahman  , AAS Mostofa Zahid
Published: April 2024

Water is the most vital element among the natural resources and is crucial for food production, economic development, and above all the survival of all living organisms including humans. The water quality of the river Kushiara has been assessed through all the seasons of the years 2018 to 2020 by investigating the major water quality parameters. All measurements were done by strictly following accepted standard testing methods. Water Temperature, pH, Electrical Conductivity, Total Dissolved Solids, Iron Concentration, Total Hardness, Total Alkalinity, and Chloride Concentration in the water samples were found to the ranges from 18 °C to 30 °C, 6.50 to 7.82, 40 µS/cm to 195 µS/cm, 26.0 mg/L to 126.8 mg/L, 0.2 mg/L to 3.0 mg/L, 19.5 mg/L to 62.5 mg/L, 22.0 mg/L to 79.4 mg/L, and 1.77 mg/L to 7.08 mg/L respectively. The content of total iron exceeded the acceptable limits for drinking water in the rainy season. All other water quality parameters studied remained within the acceptable limits throughout all seasons of the years 2018 to 2020. Comparison with available data for some of the parameters in the literature in previous years showed that the water quality of the river Kushiara remained persistent throughout the years from 2010 to 2020.
Gene therapy for spinal muscular atrophy (SMA): First experience with Onasemnogene abeparvovec (Zolgensma®) in a private hospital in Mexico
Authors: José Antonio Infante Cantú  , Sofía Lucila Rodríguez Rivera
Published: April 2024

Spinal muscular atrophy is a hereditary neuromuscular disease characterized by the degeneration of alpha motor neurons of the anterior horn of the spinal cord, leading to progressive symmetrical muscle weakness and a high risk for respiratory complications resulting in the need for some degree of ventilatory support. Two infants are presented with hypotonic syndrome in which spinal muscular atrophy was diagnosed by a genetic study. Gene therapy with Zolgensma® was used to evaluate the clinical improvement in motor function according to the Chop Intend Scale.
A comprehensive review of talent management strategies for seafarers: Challenges and opportunities
Authors: Funmilayo Aribidesi Ajayi  , Chioma Ann Udeh
Published: April 2024

This study embarked on a systematic literature review and content analysis to explore the intricacies of talent management within the maritime sector, focusing on the challenges and strategic imperatives faced by the industry in managing its workforce. The primary objectives were to identify current practices in talent management, assess the challenges in recruiting, retaining, and developing seafarers, and to propose strategic recommendations for maritime industry leaders and policymakers. Employing a comprehensive search strategy, the study scrutinized academic databases and industry reports to collate relevant literature on talent management practices within the maritime ecosystem. Inclusion criteria were meticulously defined to focus on contemporary research and publications that provided insights into the dynamics of talent management specific to the maritime context. Through content analysis, the research distilled key themes related to talent management strategies, their implications for various stakeholders, and the alignment with regulatory standards and best practices. Key findings revealed the critical importance of aligning talent management with organizational goals and global standards to ensure operational efficiency and compliance. The study also highlighted the essential role of specialized training and development tailored to the maritime sector's unique demands, alongside the significance of seafarers' well-being and career progression. Conclusively, the study underscores the necessity for maritime industry leaders to embrace digital transformation, foster continuous learning, prioritize seafarer welfare, and proactively adapt to regulatory changes. Future research directions were suggested, including the impact of digitalization on seafaring roles, cross-cultural competency development, and longitudinal studies to evaluate talent management outcomes over time.
Ovarian Burkitt lymphoma: A rare yet clinically significant entity
Authors: Z. TAZI  , M. AHARMOUCH  , K. BENCHAABOUN  , S. JAYI  , F-Z FDILI  , H. CHAARA  , M.Y. MELHOUF
Published: April 2024

Primary ovarian lymphomas are rare tumors presenting as an ovarian mass that can mimic an epithelial ovarian tumor. The average age of onset is 40 years. Burkitt lymphomas, sporadic in the Western world, typically present with abdominal involvement. Biological tests and imaging guide the diagnosis. Prognosis depends on associated bone marrow and central nervous system involvement. Treatment relies on polychemotherapy. Here, we report a case of Burkitt's lymphoma in a young woman simulating advanced bilateral ovarian cancer.
A survey on automated student evaluation and analysis using machine learning
Authors: Chitoor Venkat Ajay Kumar  , Adithya Krishna Eemani  , Gouri Charan Kalluri  , Gunadeep Rudra
Published: April 2024

The problem of automated student evaluation and analysis is a widespread issue in the education sector, where the manual evaluation of students' performance and progress can be time-consuming, prone to errors, and lacking in efficiency. The current evaluation methods do not provide real-time insights and feedback to students, leading to a lack of engagement and motivation. Many Methodologies have been developed for estimating and analyzing the students' performance. One such methodology developed using: Machine learning, educational data mining, Predicting achievement. This methodology has no concern for the aspects like non-academic activities, personality traits of students and other technical and non-technical skills. The goal of automated student evaluation and analysis is to develop a system that can accurately and efficiently evaluate and analyze students' performance and provide meaningful feedback in real-time. The system should be able to analyze large amounts of data from various sources, exams, and provide detailed insights into the strengths and weaknesses of individual students. The system should also provide teachers with the tools to track student progress over time, identify areas for improvement, and provide personalized feedback to each student. The challenge of creating such a system lies in accurately analyzing and interpreting large amounts of data, identifying patterns and trends, and providing meaningful insights and feedback to students and teachers in real-time. It requires the integration of advanced artificial intelligence and machine learning techniques, as well as user-friendly interfaces and data visualization tools.
Fiscal policy, interest rate and the manufacturing sector performance in Nigeria
Authors: Ubong Edem Effiong  , Idongesit Justin Ukere  , John Polycarp Ekpe
Published: April 2024

In this paper, the influence of fiscal policy (government expenditure and taxation) and interest rate on the manufacturing sector of the Nigerian economy was explored for the period 1981 to 2021. The study utilized the autoregressive distributed lag (ARDL) model approach since some of our variables were integrated at level and others at first difference, and the bounds test reporting the existence of long run relationship in the model. Findings of the study indicated that in the short run, government expenditure and its one-period lag exerted a negative and significant influence on manufacturing sector performance; value added tax exerted a positive and significant effect on manufacturing sector performance while its one-period lag exerted a negative and significant effect; and interest rate exerted a positive and significant effect on manufacturing sector performance. In the long run, government expenditure put forth a negative but insignificant effect on manufacturing sector performance; while value added tax and interest rate exert positive and significant effect. In the disaggregated model, recurrent expenditure exerts a negative and significant effect; capital expenditure exerted a positive and significant effect; value added tax exerted a negative and significant effect; and interest rate put forth a positive and significant influence on manufacturing sector performance. The study recommended that there is need for a reduction in the cost of governance as a huge proportion of public spending is used in running the government other than being utilized in stirring critical sectors that could stir manufacturing sector performance.
Psychological aftermath: Exploring the role of the woman as a leader in the Greek monoparental family: Review
Authors: MYRTO PATAGIA BAKARAKI  , PANAGIOTIS GIANNAKOS
Published: April 2024

Objective: To reassess the social problem of the socially vulnerable group named women leaders of monoparental families in terms of legislation, allowance policy and job benefits, among others. Design: Systematic review. Data sources: 18 electronic and book references as well as high impact journals without geographical restriction up to December 2011 were gathered from International organisations including the EU and OECD. Review methods: A reviewer applied inclusion criteria and extracted data from the latest available reports on monoparental families of Eurostat and OECD. The data came from low-, middle-, and high-income countries. Statistical rates for the proportion of the monoparental families on an international level as well as their possibility of falling below the limit of poverty were employed. Comparison was drawn between two countries under Troika’s surveillance. Results: The search identified 2 scientific researches pertaining to the hardships women as leaders of monoparental families encounter. One was conducted from the Research Center for Equality Issues and the other was published in the journal the Rostrum of Asclepius. All outcomes were self reported. It was found that the most severe problems that women as leaders of monoparental families encounter are health ones, the caring and guarding of their children as well as their professional settlement. Yet, the most vital one is the lack of allowance policy. This approach bears fruits in Ireland. It is mandatory that allowance policy along with implementation of other social structures to form a basis for the support of the monoparental families. Conclusion: Future policy concerning monoparental families must focus on establishing legislation and intervention programs that will assist the woman as a leader of the monoparental family to be assimilated in the society. Allowance policy for the mother/father must be reinforced and not abandoned as it happens nowadays.
Ethanol extract of galangal (Alpinia Galanga) administration on degeneration, necrosis, and inflammatory cells in the proximal tubules of male mice (Mus musculus) exposed to lead acetate
Authors: Muhamad Bagus Chamdani  , Epy Muhamad Luqman  , Wiwik Misaco Yuniarti  , Eka Pramyrtha Hestianah
Published: April 2024

Introduction: This study aimed to investigate the preventive effect of the ethanolic extract of galangal (Alpinia galanga) on degeneration, necrosis, and inflammatory cells in the kidney proximal tubules of male mice (Mus musculus) exposed to lead acetate. Objective: This was a pure experimental laboratory study using a completely randomized approach/randomized posttest only control group design. Twenty-five male mice (Mus musculus) were divided into five treatment groups: negative control (K-) received 0.5% CMC Na and aquades, positive control (K+) received induction of 20 mg/kgBW lead acetate for 20 days, and P1, P2, and P3 groups received oral administration of galangal ethanol extract from day 1 to day 24 as preventive measures with successive doses of (P1) 200 mg/kgBW, (P2) 400 mg/kgBW, and (P3) 800 mg/kgBW, respectively. Lead acetate administration at a dose of 20 mg/kgBW started from day 4 to day 24. On the 25th day, all groups were sacrificed, and kidney tissues were harvested for histopathological examination using the scoring method. Histopathological data analysis was performed using the Kruskal-Wallis test followed by Mann-Whitney U test to compare differences between groups. Results: The Mann-Whitney U test showed a significant increase in degeneration, necrosis, and infiltration of inflammatory cells in the kidney proximal tubules of male mice (Mus musculus) exposed to lead acetate (p < 0.05). Administration of galangal ethanol extract significantly reduced degeneration, necrosis, and infiltration of inflammatory cells (p < 0.05). The highest dose of galangal ethanol extract (800 mg/kg BW) exhibited a significant decrease in degeneration, necrosis, and infiltration of inflammatory cells (p < 0.05), comparable to the normal condition (K-). Conclusion: Administration of ethanol extract of galangal (Alpinia galanga) effectively prevented lead acetate-induced degeneration, necrosis, and infiltration of inflammatory cells in the kidney proximal tubules of male mice (Mus musculus).
Matthew Paris, i Plantageneti, la crociata
Studio ed edizione dell’Iter de Londinio in Terram Sanctam
Authors: Pitocchelli Bernardino
Published: April 2024

Matthew Paris’s Iter de Londinio in Terram Sanctam is a work on the boundary between cartography and travel literature. Contained in four autograph manuscripts and accompanied by a precious iconographic apparatus, the Iter is conceived as an itinerary that starts in London and, passing through France and Italy, reaches the Holy Land. Along the way there are Anglo-Norman captions relating to the main stops encountered along the way: from Rome to Sicily, passing through Antioch and Damascus, Armenia and the rich East, crossing Africa, until reaching Jerusalem and Acre. This volume, starting from a philological and linguistic methodology, aims to provide a new edition of the work to replace the previous, now dated and unsatisfactory, edited by Michelant and Raynaud (1882). The edition is accompanied by an introductory study that intends to address Matthew Paris’s production, both Latin and vernacular, in its entirety, in the light of a new and broader historical, linguistic, and material contextualisation. In this way, it has been possible to fully consider the Iter de Londinio in Terram Sanctam, its peculiarities, and the dynamics through which it fits into the broader artistic-literary production of its author. What ultimately emerges is a profound link between Matthew Paris’s vernacular production and the historical and cultural context of the Plantagenet court in the mid-thirteenth century, marked by King Henry III’s crusade plans.
3 • Testo critico
Authors: Pitocchelli Bernardino
Published: April 2024

In questo capitolo vengono presentati i criteri di edizione adoperati. Sono poi raccolti alcuni tratti linguistici tipici dell’anglo-normanno che s’incontrano nel testo dell’Iter.
Testo B
Authors: Pitocchelli Bernardino
Published: April 2024

Edizione del testo del ms B (Cambridge, Corpus Christi College, 16).
A Glimpse of the Semantic Structure of the Bulgarian Preposition na
Authors: Tsoneva-Mathewson Snezha
Published: April 2024

This paper demonstrates the applicability of a cognitive lexical semantic analysis to some of the meanings of the highly polysemous Bulgarian preposition na. It proposes an account of the various senses of na as a radial (conceptual) category with a prototypical sense and various extensions referred to as lexical concepts in the Principled Polysemy Approach developed by Tyler and Evans. Similarly, it is argued that, in addition to the spatio-geometric parameters, the core spatial lexical concept of the Bulgarian na includes also functional information from which non-spatial meanings such as ‘active state’ derive.
The Contributions of Dr. B.R. Ambedkar on Indian Agriculture and Women’s Empowerment
Authors: Mandal Bholanath
Published: April 2024

Book
Quantidade e preço dos produtos florestais não madeireiros alimentícios brasileiros entre 1994 e 2014.
Authors: De Sousa Lima Ana Paula , Guimarães Pompeu Paes , Nogueira Narjara , Botrel Rejane , Alves da Silva Elaine Cristina , Paiva Martins Elânia Guadalupe
Published: April 2024

O presente artigo objetivou analisar a produção, valor unitário e valor bruto de produtos florestais não madeireiros alimentícios entre 1994 a 2014. A quantidade produzida (t) e o valor bruto da produção (R$/t) foram coletados do manual da produção vegetal e da silvicultura, o valor unitário resultou da divisão entre o valor bruto e a quantidade produzida. Destaca-se que tanto o valor bruto, como unitário da produção, foi deflacionado tomando como base o ano de 1994. Foi analisado as taxas de crescimento na produção e no valor unitário, bem como enquadramento do deslocamento da curva de oferta e demanda. Como resultados principais, o açaí, a castanha-do-pará e o pinhão, apresentaram um deslocamento da curva da demanda para direta e a erva mate deslocamento da curva da demanda para esquerda. Quanto as regiões, o Norte foi referência na produção de açaí, castanha-do-pará e palmito. O Nordeste proporcionou castanha de caju, mangaba, umbu e foi a segunda maior produtora de açaí. No Sudeste houve a produção de todos alimentícios, exceto erva mate. O Sul foi expoente na produção de erva mate e pinhão. E a região centro oeste destacou-se como segunda maior produtora de erva mate, e também produziu castanha-do-pará e palmito.
Variabilidade espacial da resistência à penetração do solo em área de capineira irrigada no semiárido
Authors: Rodrigues Marcos Sales , Ramos Ricardo R. D. , Azevedo Tomas P. de , Patrocinio Filho Antonio P. , Oliveira Lineker G. de
Published: April 2024

As restrições climáticas do semiárido nordestino para a produção animal é suprida por meio do fornecimento de alimentos através de capineiras irrigadas. Contudo, as constantes colheitas mecanizadas podem modificar as propriedades físicas e dinâmicas do solo, aumentando a compactação do solo. Portanto, objetivou-se neste trabalho avaliar o padrão de distribuição espacial da resistência mecânica do solo à penetração (RP) em área de capineira irrigada no semiárido nordestino. O experimento foi conduzido em uma capineira cultivada com capim-elefante em Petrolina-PE sob um Argissolo. A RP foi obtida com um penetrômetro de impacto IAA/Planalsucar Stolf nas camadas de 0–10, 10–20, 20–30 e 30–40 m seguindo uma grade amostra de 60 pontos com espaçamento equidistante de 10 m entre pontos. Os dados foram submetidos a análise de estatística descritiva e geoestatística. A RP do solo apresentou dependência espacial em todas as camadas avaliadas, com valores acima do limite para solos arenosos, indicando necessidade de intervenção e remoção da camada compactada. Houve incremento da RP com o aumento da profundidade, atingindo níveis máximos principalmente entre 20 e 30 cm de profundidade. Os métodos geoestatísticos permitiram o zoneamento da área definindo regiões específicas com maiores níveis de compactação (RP).
Puberdade e maturidade sexual em touros bovinos
Authors: Mello Raquel Rodrigues Costa
Published: April 2024

A eficiência econômica de um sistema de produção está associada à capacidade produtiva e reprodutiva do rebanho. Desse modo, a eficiência reprodutiva dos rebanhos é um dos fatores determinantes da eficiência total de produção, e deve, portanto, ser considerada como critério de seleção em programas de melhoramento genético animal, podendo ser considerada como uma das mais importantes características econômicas avaliadas pelos criadores de gado de corte. Nesse contexto, o macho bovino tem um papel relevante por contribuir para a manutenção das características de interesse nos sistemas de produção. Rebanhos detentores de elevada precocidade sexual e fertilidade possuem maior disponibilidade de animais, tanto para venda como para seleção, permitindo maior intensidade seletiva e, consequentemente, progressos genéticos mais elevados e maior lucratividade. Desse modo, o objetivo desta revisão é discutir alguns aspectos sobre a puberdade e maturidade sexual em touros de raças taurinas e zebuínas.
Fatores antinutricionais e processamento do grão de soja para alimentação animal
Authors: Lima Carolyny Batista , Costa Fernando Guilherme Perazzo , Ludke Jorge Vitor , Lima Júnior Dorgival Morais de , Mariz Tobyas Maia de Albuquerque , Pereira Adriana Aparecida , Silva Gildo Mendes da , Almeida Anailton Carlos Alves de
Published: April 2024

A soja é uma oleaginosa cosmopolita e fornece óleo e proteína para alimentação humana e animal. O uso da soja na alimentação animal é bastante disseminado e configura-se na principal fonte proteica da dieta dos animais. Todavia, a soja apresenta uma série de fatores antinutricionais que dificultam sua utilização pelos animais, principalmente os não-ruminantes. Dentre esses fatores, destacam-se inibidores de proteases, lecitinas, ácido fítico, saponinas e fibras. Queda de produtividade, lesões de intestino, hipertrofia de órgãos e redução do aproveitamento de nutrientes são recorrentes nos animais alimentados com a soja in natura. Alguns processamentos que envolvam elevação da temperatura são capazes de reduzir o efeito dos fatores antinutricionais na soja, dentre eles podem-se citar a tostagem, micronização, extrusão e cozimento. A eficiência desses tratamentos está no tempo e intensidade de aquecimento, bem como sua associação com outras formas físico-químicas de tratamentos como umidade e pressão. Diante dessa variedade, objetivou-se revisar os efeitos dos diferentes fatores antinutricionas presentes no grão de soja bem como os principais métodos utilizados para reduzir a concentração desses metabólitos nos grão, a fim de aumentar sua qualidade nutricional.
Aspectos da dinâmica folicular em bovinos
Authors: Mello Raquel Rodrigues Costa , Ferreira Joaquim Esquerdo , Mello Marco Roberto Bourg , Palhano Helcimar Barbosa
Published: April 2024

Durante as últimas décadas, a produtividade dos rebanhos bovinos tem aumentado significativamente, e isso tem sido atribuído principalmente à intensa seleção de características produtivas, tais como maior produção de carne e leite, através do aperfeiçoamento de biotécnicas de manejo reprodutivo. Assim, técnicas de reprodução assistida, como a transferência de embriões (TE) e a produção in vitro de embriões (PIV) vêm sendo desenvolvidas a fim de maximizar o potencial reprodutivo de fêmeas bovinas. Entretanto, para o emprego correto destas biotécnicas, torna-se necessário um melhor entendimento dos fatores que controlam o desenvolvimento folicular nestes animais. Portanto, o objetivo desta revisão é abordar os principais aspectos da dinâmica folicular em bovinos.
Controle de pulgão-preto em feijão-caupi com o uso de sementes de Annonaceae e a bioatividade das sementes em diferentes épocas de armazenamento
Authors: Rabelo Janiquelle da Silva , Bleicher Ervino
Published: April 2024

Objetivou-se verificar o controle do pulgão utilizando extratos de sementes de annonaceae e a bioatividade das sementes em diferentes épocas de armazenamento. O trabalho foi conduzido, em Fortaleza-CE, em agosto de 2013. O delineamento utilizado foi o de blocos ao acaso. Para a realização do trabalho foi necessário dois ensaios, no primeiro utilizou-se 9 repetições e 3 tratamentos, testemunha; semente de atemoia e semente de ata. No segundo: 8 repetições e 4 tratamentos, testemunha (sem aplicação), 0 ano (sem armazenamento), 5 anos e 6 anos de armazenamento. Os extratos foram preparados adicionando-se 1 g do pó da semente em 100 ml de álcool e filtrados após 24 horas para obtenção a 1% p/v e aplicados a 0,5% p/v. Dez dias após o plantio (DAP) foi realizada a infestação. A aplicação por pulverização se deu aos 12 DAP. A avaliação foi realizada dois dias após a aplicação dos tratamentos, contando-se os pulgões vivos. Dentre os dois extratos comparados, a ata e a atemoia mostraram-se eficientes, causando mortalidade de 99,27% e 98,18%, respectivamente. Conclui-se que, os extratos testados possuem substância inseticida que controla o pulgão-preto, e que não há diferença de eficiência dos extratos com sementes em diferentes épocas de armazenamento.
Potencial forrageiro da jitirana (Merremia Aegyptia) para a produção de feno no semiárido nordestino
Authors: Lacerda Marcos André de , Silva Rosilene Agra da , Linhares Paulo Cesar Ferreira , Pinto Maria do Socorro de Caldas , Maracaja Patricio Borges
Published: April 2024

A fenação constitui uma boa alternativa para o uso da jitirana (Merremia aegyptia L.) uma vez que esta espécie forma densa população, tem alto teor de proteína bruta, sendo bastante palatável aos animais. A fenação deve ser realizada quando as plantas apresentarem a melhor combinação de produtividade e valor nutritivo. Nos meses de seca o pequeno produtor encontra dificuldades para alimentar seus rebanhos, haja vista que manter um rebanho de animais tendo que comprar rações que geralmente demanda preços muito alto, alguns dos produtores são obrigados a vender parte do seu rebanho. Uma alternativa é a preparação do feno de plantas forrageiras nos períodos de chuvas, podendo estocar e armazenar esse alimento para garantir a alimentação dos rebanhos nos períodos de estiagem. Este trabalho teve o objetivo avaliar a produtividade e o valor nutricional de plantas de jitirana (Merremia aegyptia L.) em  condições de semiárido. Foram realizadas amostragens quinzenais, dos 15 aos 120 dias de idade das plantas, analisando-se a produtividade tanto da matéria natural (kg/ha) como da matéria seca (kg/ha e %) e os teores de proteína bruta (kg/ha e %), cálcio (kg/ha e %) e fósforo (kg/ha e %). Observou-se que com o aumento da idade fenológica, houve aumento da produtividade tanto da matéria natural (1.597,93 kg/ha aos 15 dias para 30.470,21 kg/ha aos 120 dias) quanto a matéria seca (93,00 kg/ha aos 15 dias para 4.333,00 kg/ha aos 120 dias). Os teores de proteína bruta diminuíram com o avanço da idade de corte estabilizando em aproximadamente 17% PB entre os 75 e 120 dias de idade. Os teores de cálcio e fósforo permaneceram constantes em todos os períodos avaliados. Com base nos teores de proteína bruta, cálcio e fósforo, a fenação da jitirana poderá ser realizada entre os 105 e os 120 dias de idade das plantas ou no início da frutificação, nas condições de semiárido do nordeste do Brasil.
Estimativa dos riscos de ocorrência de incêndios florestais no Parque Estadual Pico do Jabre, na Paraíba
Authors: Santos William de Sousa , Souto Patrícia Carneiro , Souto Jacob Silva , Mendonça Izaque Francisco Candeia de , Souto Lauter Silva , Maracajá Patrício Borges
Published: April 2024

As Unidades de Conservação são espaços protegidos por lei que desempenham um papel fundamental na proteção e preservação da vida silvestre e do bem estar das populações. Este estudo objetivou avaliar o comportamento temporal do índice de risco de incêndios na Floresta Estacional Semidecidual Montana do Pico do Jabre. Neste sentido, procurou-se determinar os riscos mensais de ocorrência de incêndios florestais com base em dados meteorológicos de precipitação e umidade relativa do ar às 13h00, no período de 2008 a 2012. Os dados foram obtidos junto ao Instituto Nacional de Meteorologia e sistematizados para posterior cálculo da estimativa dos riscos de incêndios utilizando a Fórmula de Monte Alegre. De acordo com os resultados obtidos, verifica-se que nos meses de janeiro, março e junho as possibilidades de ocorrência de incêndio florestal na região estudada são elevadas, sendo classificada como de perigo alto e, nos demais meses, o risco de ocorrência de incêndios florestais foi considerado como muito alto, indicando que a possibilidade de ocorrência de incêndios nessa Unidade de Conservação é elevada, mesmo em meses considerados chuvosos para a região.
Caracterização agroclimática e aptidão de culturas para diferentes municípios e regiões da Paraíba
Authors: Medeiros Raimundo Mainar de , Francisco Paulo Roberto Megna , Matos Rigoberto Moreira de , Santos Djail , Sousa Thiago Pereira de
Published: April 2024

O zoneamento agroclimático é um extraordinário processo de informação do potencial agrícola de uma dada localidade e define a melhor época de plantio, as culturas adequadas ao cultivo na região e identifica áreas com maior potencial agrícola para sua produtividade. Objetivou-se caracterizar o clima e efetivar o zoneamento agroclimático para dez culturas apontando as suas possíveis aptidões de cultivo para os municípios de Alhandra, Araruna, Bananeiras, Santa Luzia, São João do Cariri e Teixeira. Utilizou-se uma série histórica de precipitação e temperatura do ar média para a realização do cálculo do balanço hídrico climatológico, classificação climática, construção do evapopluviograma e zoneamento agroclimático das culturas. Todas as culturas estudadas são aptas ao cultivo em todos os municípios, desde que seja adotado um sistema de irrigação. O uso da irrigação torna-se indispensável, principalmente nos meses que apresentam maior déficit hídrico, podendo adotar o manejo da irrigação com base nos dados históricos de evapotranspiração e desta forma garantir a produtividade máxima das culturas.
Características químicas do solo influenciadas pela adição de água residuária tratada sob cultivo do pinhão manso
Authors: Firmino Michelle Cordeiro , De Farias Maria Sallydelândia Sobral , De Medeiros Silvana Silva , Guerra Hugo Orlando Carvallo , Guimarães Jean Pereira
Published: April 2024

A crescente geração de efluentes líquidos e o seu lançamento no meio ambiente tem-se constituído numa preocupação mundial devido aos impactos negativos gerados. Este trabalho teve como objetivo avaliar os parâmetros químicos do solo após aplicação de água residuária tratada durante o terceiro ciclo de cultivo do pinhão manso (Jatropha curcas L.) O solo utilizado foi o Argissolo Acinzentado Eutrófico, textura franco arenoso. O experimento foi conduzido em lisímetros sob ambiente protegido, localizado na Universidade Federal de Campina Grande, município de Campina Grande, PB. Foi adotado o delineamento experimental em blocos casualizados, com quatro tratamentos de água residuária tratada de origem doméstica (T1=50%, T2=75%, T3=100% e T4=125 %) e três repetições, totalizando 12 parcelas experimentais. Analisaram-se camadas de solo de 0 - 20 cm de profundidade. A alta concentração de sais presentes na água residuária elevou de forma expressiva a condutividade elétrica do solo e o teor de sódio trocável, aumentando o riso de salinização. De modo geral, a fertilidade do solo ao decorrer do terceiro ciclo de produção do pinhão manso foi afetada pela redução de matéria orgânica do solo.