bluuebunny/crossref_metadata_2025 huggingface dataset:
Análisis de los Equipos de Servidores Virtuales en las Instituciones Públicas de la Ciudad de Babahoyo
Authors: Fernández Torres Ana del Rocío , Gonzales Valero María Isabel , Crespo Torres Narcisa María , Galeas Borja Vladimir Eduardo
Published: July 2023

La presente investigación, tiene como objetivo analizar los equipos en relación con los servidores virtuales en las Instituciones públicas de la Ciudad de Babahoyo. La metodología empleada para realizar este artículo es el método de campo, bibliográfica y la Técnica aplicada es la entrevista a las diferentes instituciones de la Ciudad de Babahoyo, para así analizar las infraestructuras tecnológicas, sus recursos como espacio en disco duro, memoria, conectividad hacia otros equipos e internet. Como resultado del análisis se diagnostica la seguridad de las aplicaciones que se encuentran alojado en los servidores y de las aplicaciones que no están alojadas en las Instituciones, como conclusión nos indica que los beneficios según la investigación bibliográfica y de campo nos permitió conocer las múltiples ventajas que tienen los servidores virtuales entre ellas ahorro económico, de espacio y energía, sin contar la facilidad para la continuidad y respaldo, y además que otros factores encontrados son las características técnicas que deben sustentar la aplicación de los servidores virtuales, como tomar en cuenta la seguridad y características como, son estructura de red, firewall, capacidades de cache y almacenamiento en discos duros.
Dalli räumt die Chefetage auf
Authors: Brändlein Philip
Published: July 2023

Der Eigenmarkenlieferant Dalli stellt die gesamte Geschäftsführung neu auf. Mit Ralf Mühlenberg räumt der letzte langjährige Manager seinen Stuhl. Ein neues Führungsteam soll den Kurs beim angeschlagenen Unternehmen radikal ändern.
Geflügelkonzern PHW erweitert Veggie-Werk
Authors: Adelhardt Andrea
Published: July 2023

Der pflanzenbasierte Geschäftszweig gewinnt für PHW an Bedeutung. Damit der Bereich weiterwächst, investiert der Geflügelproduzent Millionen, macht sich unabhängig von Vorlieferanten und plant, die Produktvielfalt der Fleischalternativen zu vergrößern.
Rewe fördert Zweinutzungshuhn
Authors: Brehl Jens
Published: July 2023

Rewe kündigt an, Bio-Fleisch und Bio-Eier von Zweinutzungshühnern und -hähnen in ausgewählte Märkte zu bringen. Ein früherer Markttest in Nordhessen wurde voriges Jahr wegen geringer Nachfrage beendet.
Handel und Regierung besiegeln Pakt gegen Lebensmittelverschwendung
Authors: Falker Gerrit-Milena , Deglow Hans-Jürgen
Published: July 2023

Jährlich landen rund 800000 Tonnen Lebensmittel im deutschen LEH auf dem Müll. 14 Händler haben sich nun gegenüber dem BMEL verpflichtet, konkrete Reduktionsmaßnahmen zu ergreifen.
Eckes droht Niederlage im Flaschenstreit
Authors: Chernobylskaya Mayya
Published: July 2023

Nach anfänglicher Zuversicht wendet sich das Blatt für Eckes-Granini: Im Hauptsacheverfahren am Landgericht Köln erkennen die Richter wenig Ähnlichkeit zwischen den Saftflaschen der Marken Granini und der von Edeka-Tochter Albi.
„Die Marke muss Ideen liefern“
Authors: Düthmann Christiane
Published: July 2023

Wenn das Geld knapp ist, greifen Kunden gern zur Handelsmarke. Das bekommen vor allem konturlose Herstellerbrands ohne Ausstrahlung zu spüren, weiß Robert Kecskes, Insights Director der GfK, dem Projektpartner der LZ bei der Kür der Top-Marken. Im Interview spricht er über erfolgreiche Marken mit einer Botschaft, kreative Mittelständler und die Poesie der Gestaltung.
„Die Kaufkraft der Kunden stärken“
Authors: Düthmann Christiane
Published: July 2023

Marcel Rieser, Geschäftsbereichsverantwortlicher Sortiment bei dm, über die Zusammenarbeit mit der Industrie in Zeiten der Krise, das Verhältnis von Marke zu Eigenmarke und die Aufgabe, die Verbraucher beim nachhaltigen Konsum zu unterstützen.
„Wir alle mussten improvisieren“
Authors: Sonntag Axel Stefan
Published: July 2023

Thomas Große, Einkaufsleiter Food beim süddeutschen Filialisten Kaes, über knauserige Kunden, enorme Preisabschläge und Werte, die auch in der Krise Bestand haben.
Vier-Tage-Woche eröffnet Chancen
Authors: Tietze Iris
Published: July 2023

Flexible Arbeitszeitmodelle könnten für Unternehmen im Wettbewerb um gutes Personal ein Schlüsselfaktor sein. Tegut und Hornbach machen damit gute Erfahrungen.
Neue Kreisläufe – Potenzial von Wasserstoff auf Kläranlagen
Authors: Klein Daniel , Teichgräber Burkhard
Published: July 2023

Für das Erreichen der Klimaneutralität bildet Wasserstoff eine wichtige Säule. Ein schneller Hochlauf der Wasserstoffwirtschaft ist deshalb erklärtes Ziel der Politik. Kläranlagen spielen in diesen Betrachtungen kaum eine Rolle, obwohl sie ein hohes Potenzial für die Wasserstofferzeugung bieten.
Neue Wege für eine nachhaltige Trinkwasserdesinfektion
Authors: Swinkels Sjef
Published: July 2023

Ein in der Industrie bereits seit Jahren etabliertes, jedoch für die Trinkwasseraufbereitung neuartiges Herstellungsverfahren ermöglicht erstmals die Erzeugung von Chlordioxid ohne Salzsäure. Das Clorious2-Verfahren bietet damit Trinkwasserversorgern in Zeiten von Lieferengpässen eine unkomplizierte Materialbeschaffung und mehr.
Tonnen sollen leerer werden
Authors: Vetter Bernhard
Published: July 2023

Frankfurt a.M. Der Lebensmittelgroß- und -einzelhandel hat sich mit dem BMEL auf einen Pakt geeinigt, der Verluste und Verschwendung von Essbarem reduzieren soll. Die Teilnahme ist freiwillig, aber die Firmen unterwerfen sich einigen Regeln.
Starthilfe für den Raps
Authors: Naue Dorothee
Published: July 2023

Nach mehreren mageren Jahren fuhren Landwirte im vergangenen Jahr wieder eine gute, zum Teil sehr gute Rapsernte mit hohen Ölgehalten ein. Dementsprechend wurde in der laufenden Saison die bundesweite Anbaufläche ausgedehnt.
The Dilemma of the Abagusii Widows in the Seventh Day Adventist Church, Itumbe Station – South Kenya Conference
Authors: Moronya Ruth Nyanchama , Ogwora Erick , Ogolla Maurice
Published: July 2023

This study aimed to find out the dilemma of the Abagusii widows in the Seventh Day Adventist church, Itumbe station-South Kenya conference. Itumbe Station of the Seventh Day Adventist (SDA) church has 1551 widows. The argument of this study is that the death of a husband impacts every aspect of a widow’s life, together with the orphaned children left to her. Most of the Abagusii widows within the SDA church undergo very difficult dilemmas of life: discriminatory regards to isolation, condemnation, stigmatisation, poor access to basic services like healthcare, material poverty, psychosocial trauma, demoralisation, fearfulness, emptiness, helplessness, and abandonment to loneliness. They have lost their dignity, which is against the position of Jesus, who showed zero discrimination to any member of society. Informed by Family Systems Theory, the study claims that solutions to the reality of widowhood are neither just doctrinal nor one-sided. The SDA church should be fully involved through the strengthening of pastoral care ministry and possibly through the creation of a specific ministry for widows, for it is the mission of the church to take care of widows, offering them solidarity, comfort, and consolation.
Modeling and performance analysis of artificial intelligence (AI) based controllers for AVR of a synchronous generator (SG)
Authors:   , Mazibuko Ntombenhle
Published: July 2023

An automatic voltage regulator (AVR) is an electronic device used to control, adjust, and maintain a constant voltage level at the stator terminals of a synchronous generator (SG). Hence, the voltage stability of a power system network is affected by AVR’s performance. Maintaining constancy and stability of the nominal voltage level in power systems remains a major control problem. Another critical reason for effective control of the generator's terminal voltage is that real line losses are determined by the real and reactive power flows and variation in terminal voltage has a large effect on reactive power flow and thus on these losses. A large power system consists of several synchronous generators that operate in synchronism; the terminal voltage and frequency are to be kept constant with minimal variation to ensure the stability of the power system. The voltage stability of a synchronous generator is highly affected when the terminal voltage varies above the nominal acceptable range. To maintain a constant voltage at a SG’s terminal, an AVR is used. The performance of an AVR is highly dependent on efficient controller design, which improves the output of the AVR by restoring the voltage of the synchronous generator to its nominal value in the presence of disturbances. The selection of a suitable controller is one of the most challenging aspects of AVR system design. This study presents the design, modeling, and performance analysis of an AVR system employing a Proportional Integral and Derivative (PID) controller, a Fuzzy Logic controller (FLC), and a Model Predictive Controller (MPC) for the performance enhancement and transient response of the AVR system with these controllers. Initially, a transfer function is used to develop a mathematical model of an AVR in order to observe its step response when the terminal voltage of a generator is disturbed. A PID controller is then added to the system and tuned to enhance the step response of an AVR. The third model develops and implements an AVR system based on MPC, while the final model implements an FLC for an AVR system. Simulating the models in Matlab Simulink 2021a, the results have demonstrated the need for a controlling mechanism to enhance the dynamic performance of the AVRS, and MPC has shown to be the most effective controller.
HYPOLIPIDEMIC ACTIVITY OF MEDOSTATIN IN PATIENTS WITH CORONARY HEART DISEASE IN DIFFERENT TYPES OF DYSLIPIDEMIA
Authors: Siluyanov V. V.
Published: July 2023

Main aim of given study was comparison of effect of 20 mg/day of medostatin on level of lipids in different types of dyslipidemia - isoloted hypercholesterolemia and combined hyperlipidemia in patient with coronary heart disease. It was noted that 6 months therapy with medostatin exerted positive effect on blood lipid spectrum in both types of dyslipidemia.
PATНОMORPHOLOGICAL CHARACTERISTIC EXPERIMENTAL OSTEOARTROZIS
Authors: Nikolaev V. I. , Golubev O. A.
Published: July 2023

By the example of white laboratory rats are considered pathomorphological characteristics experimental osteoartrozis in various terms of development of pathological process. In original research the way of formation of pathological changes in a joint and methods of a morphological estimation of fabric changes which allow to give the objective characteristic morphogenetic processes is offered.
Viral Families and Disease X: A Framework for U.S. Pandemic Preparedness Policy
Authors: Schuerger Caroline , Batalis Steph , Quinn Katherine , Adalja Amesh , Puglisi Anna
Published: July 2023

Pandemic threats are increasing as globalization, urbanization, and encroachment on animal habitats cause infectious outbreaks to become more frequent and severe. It is imperative that the United States build a pipeline of medical countermeasure development, beginning with basic scientific research and culminating in approved therapies. This report assesses preparedness for families of viral pathogens of pandemic potential and offers recommendations for steps the U.S. government can take to prepare for future pandemics.
The Policy Playbook
Authors: Corrigan Jack , Flagg Melissa , Murdick Dewey
Published: July 2023

This brief provides a framework for a systems-oriented approach to technology and national security strategy. It identifies and discusses the tensions among three strategic goals of technology and national security policy — driving technological innovation, impeding adversaries’ progress, and promoting safe, values-driven technology deployment — and highlights various levers of power that policymakers can use to pursue those goals. This adaptable framework, suitable for any country or international body, emphasizes the importance of creative problem-solving and maintaining a comprehensive understanding of the policy landscape.
Exogenous Salicylic Acid Application During Germination of Silage Maize (Zea mays L.) Exposed to PEG-Induced Drought Condition
Authors: GÖKKAYA Tuğba Hasibe , ARSLAN Mehmet
Published: July 2023

The aim of study was to investigate the effects of salicylic acid on germination and seedling parameters of maize cultivars (Zea mays L.) under drought stress conditions. The research was carried out in a growth chamber in a factorial experiment design with four replications in random plots. In this study, three different silage maize cultivars were used (Side, Pehlivan and Burak). Drought conditions were established using Polyethylene glycol-6000 (PEG-6000) at three different levels (0.-0.4 MPa and -0.8 MPa). Salicylic acid applications were calculated at three different doses of 0-0.1-0.2 mM. The parameters examined in Side cultivar gave superior results exposed to drought conditions compared to other cultivars. Differences were determined in the response of maize cultivars to drought stress, and statistically noteworthy diminishes were also observed as the drought level enhanced. It was displayed that salicylic acid applications generally boosted germination and seedling parameters exposed to drought conditions compared to control. The maximum shoot lenght was detected at 0.2 mM SA dose with 2.30 cm but that did not exhibit significant numerical differences. SA applications, on the other hand, did not have an effect on root length. Moreover, the best result of shoot fresh weight was recorded in 0.1 mM SA application, as root fresh weight gave the best in 0.2 mM SA application. Furthermore, when a correlation is made between the specified parameters, the highest relation was markedly positive and linked between GR and GI (r: 0.99, p
CONTRIBUIÇÕES PARA O ENSINO DE CIÊNCIAS UTILIZANDO A TECNOLOGIA: JOGOS DIGITAIS PARA ENSINO DE BIOLOGIA E QUÍMICA AO NONO ANO DO FUNDAMENTAL A PARTIR DA ALIMENTAÇÃO SAUDÁVEL
Authors: Siston Aylane de Souza , Oliveira Daniel de , Rodrigues Giseli Capaci
Published: July 2023

A pesquisa propõe analisar e refletir o ensino de ciências através do uso de ferramentas direcionadas à biologia e química abordada e introduzida nas escolas. Propostas de ensino significativo são levantadas e avaliadas quanto ao seu desempenho, utilizando as tecnologias como uma ferramenta para auxiliar os alunos nas aulas, com um jogo. A partir do estudo de artigos como “Metodologias ativas de aprendizagem na Educação Profissional e Tecnológica”; “As crianças e o interesse pela ciência: um estudo baseado em ações para promoção da aprendizagem significativa” e; “Percepções docentes e práticas de ensino de ciências e biologia na pandemia: uma investigação da Regional 2 da SBEnBio”, demonstra-se uma importante observação, do artigo mencionado do “SBGames” e da observação sobre os jogos no artigo citado do “VIII Congresso Nacional de Educação”, como estratégia para renovação da prática escolar no ensino fundamental, que com a metodologia ativa, traz um formato que acrescenta dados para intervir com a abordagem significativa ao ensino de ciências pós-pandemia. Os autores propõem ferramentas e discussões que se verificam relevantes à didática na atualidade. O artigo também visa uma reflexão sobre os objetivos da educação científica com a bioquímica e a alimentação, através do recurso tecnológico jogo o Mostro comilão, sugerindo uma metodologia investigativa sobre a aprendizagem com jogos digitais para turmas do 9º ano do ensino fundamental. As conclusões apontam para a necessidade de uma redefinição do corpo docente ao lecionar ciência ao nono ano escolar e na forma de condução das atividades de ensino, a fim de se verificar eficiente quando ocasionar satisfação e ampliação da estrutura cognitiva dos alunos, considerando os temas abordados nos artigos citados.
AGGRESSIVENESS X VIOLENCE IN THE SCHOOL ENVIRONMENT
Authors: Figueiredo Celma Cynara de , Florentino Magda de Almeida , Mendes Iapissara dos Santos Silva , Lima Suely Benedita Tavares de
Published: July 2023

Faced with the latest events shown in the media and many times witnessed by ourselves in the schools where we work, we observed the need to go deeper into this subject in order to carry out a project that could be useful in the current school. The objective of this project is to draw the attention of professionals to the problem of school aggression and violence and to present suggestions for improving coexistence within the school. As Oliveira and Martins (2006) well mentions, “what happens is that this violence has a lot to do with the discourse of refusal, or even, the lack of finding the right words to give an exact meaning to a wide range of of feelings”. Violence is all kinds of physical and psychological damage caused to others, young people are pointed out as the cause of this violence, but this issue is much more complex. Because to combat this violence that is so common among our youth, we have to research the origin, since young people apply in their school conviviality or those who live at home. Currently schools deal with fights and other aggressive acts through internal norms such as: verbal or formal warning, suspensions, transfers and expulsion of the student. I suggest more dynamic classes with the participation and opinion of the students to organize a field class, formalize an agreement between both on how the school rules will be applied in case of non-compliance with the school's discipline rule.
Insights into secondary organic aerosol formation from the day- and nighttime oxidation of PAHs and furans in an oxidation flow reactor
Authors: El Mais Abd El Rahman , D'Anna Barbara , Drinovec Luka , Lambe Andrew , Peng Zhe , Petit Jean-Eudes , Favez Olivier , Ait-Aissa Selim , Albinet Alexandre
Published: July 2023

Abstract. Secondary organic aerosols (SOA) formed by oxidation of typical precursors largely emitted by biomass burning, such as PAHs and furans, are still poorly characterized in terms of formation yields, physical and light absorption properties, particularly those generated at night following reaction with nitrate radicals (NO3). In the present study, we evaluated and compared the formation yields, effective density (ρeff), absorption Ångström exponent (α), and mass absorption coefficient (MAC) of laboratory-generated SOA from three furan compounds (furan, 2-methylfuran, and 2,5-dimethylfuran) and four PAHs (naphthalene, acenaphthylene, fluorene, and phenanthrene). SOA were generated in an oxidation flow reactor from the reaction between hydroxyl radicals (OH; 0.1–20 equivalent aging days) or NO3 radicals (0.05–6 equivalent aging nights of 14 h) with single furan or PAH. The ρeff, formation yields, α, and MAC of the generated SOA varied depending on the precursor and oxidant considered. The ρeff of SOA formed with OH and NO3 tended to increase with particle size before reaching a “plateau”. This was particularly evident for the nighttime chemistry experiments with NO3 radicals (1.2 to 1.6 on average for particles > 100 nm). Such results highlighted potential differences in the chemical composition of the SOA, as well as probably in their morphology, according to the particle size. Three times lower SOA formation yields were obtained with NO3 compared to OH. The yields of PAH SOA (18 to 76 %) were 5 to 6 times higher than those obtained for furans (3–12 %). While furan SOA showed low or negligible light absorption properties, PAH SOA was found to have a significant impact in the UV-Visible region, implying a significant contribution to atmospheric brown carbon (BrC). No increase in the MAC values was observed from OH to NO3 oxidation processes, probably due to a low formation of nitrogen-containing chromophores through homogeneous gas phase oxidation processes with NO3 only (without NOx). Overall, the results obtained in this work demonstrated that PAHs are significant precursors of SOA emitted by biomass burning, through both, day- and nighttime processes, and have a substantial impact on the aerosol light absorption properties and so probably on climate.
A global analysis of water storage variations from remotely sensed soil moisture and daily satellite gravimetry
Authors: Blank Daniel , Eicker Annette , Jensen Laura , Güntner Andreas
Published: July 2023

Abstract. Water storage changes in the soil can be observed on a global scale with different types of satellite remote sensing. While active or passive microwave sensors are limited to the upper few centimeters of the soil, satellite gravimetry can detect changes in the terrestrial water storage (TWS) in an integrative way, but it cannot distinguish between storage variations in different compartments or soil depths. Jointly analyzing both data types promises novel insights into the dynamics of subsurface water storage and of related hydrological processes. In this study, we investigate the global relationship of (1) several satellite soil moisture products and (2) non-standard daily TWS data from the Gravity Recovery and Climate Experiment/Follow-On (GRACE/GRACE-FO) satellite gravimetry missions on different timescales. The six soil moisture products analyzed in this study differ in the post-processing and the considered soil depth. Level 3 surface soil moisture data sets of the Soil Moisture Active Passive (SMAP) and Soil Moisture and Ocean Salinity (SMOS) missions are compared to post-processed Level 4 data products (surface and root zone soil moisture) and the European Space Agency Climate Change Initiative (ESA CCI) multi-satellite product. On a common global 1∘ grid, we decompose all TWS and soil moisture data into seasonal to sub-monthly signal components and compare their spatial patterns and temporal variability. We find larger correlations between TWS and soil moisture for soil moisture products with deeper integration depths (root zone vs. surface layer) and for Level 4 data products. Even for high-pass filtered sub-monthly variations, significant correlations of up to 0.6 can be found in regions with a large, high-frequency storage variability. A time shift analysis of TWS versus soil moisture data reveals the differences in water storage dynamics with integration depth.
El pensamiento creativo como herramienta en el design thinking
Authors: Buendía P Juan Carlos
Published: July 2023

A lo largo de este artículo se analiza el concepto design thinking desde el punto de vista del proceso creativo, con la intención de comprender sus concepciones y aplicaciones, y relacionar su estructura con la formación en emprendimiento, mediante las nociones de creatividad e innovación. Se define el término como una herramienta que el mercado comprende a profundidad, lo que favorece el desarrollo de soluciones y propuestas de valor pertinentes e innovadoras. Su aplicación como medio para la formación en emprendimiento genera beneficios plausibles, prácticos y enfocados en los valores humanos, la visión, la colaboración radical, los procesos, la cultura y la acción
Performance Evaluation of Full Array, Sub-Array and Overlapped-Sub-Array Hybrid Beamforming Architectures for Massive Mimo Systems
Authors: Gadiel Godwin Mruma
Published: July 2023

The technological advancement in wireless communication, promises high data rate for end users. This has led to the possibility of smart cities, inter connected vehicles, and virtual reality applications. One of the recent technologies in wireless communication is massive MIMO where large number of antennas are deployed at the transmitter or receiver. This is possible due to the use of mmWave in wireless communication. With massive MIMO, beamforming technique can be employed in the communication system. Beamforming is the ability of communication system to direct power to the intended users and to cancel power at non-intended users and thus significantly improving communication system performance. Digital beamforming was initially used in MIMO systems. However, for massive MIMO systems it leads to high power consumption due to large number of dedicated radio frequency chain in each antenna. To address this challenge, hybrid beamforming techniques were introduced. There are three architectures for hybrid beamforming: Fully array architecture (FAA), overlapped sub-array architecture (OSA) and sub-array architecture (SAA). This paper has analysed three performance parameters of the mentioned hybrid beamforming architectures. The simulation results show that, FAA architecture has high performance in outage probability and spectral efficiency. However, its energy efficiency is lower compared to OSA and SAA. Specifically, SAA has the highest energy efficiency in comparison to FAA and OSA. It can also be observed that, with only 25% increased number of elements in OSA, the energy efficiency can be slightly lower compared to SAA, while achieving appreciable spectral efficiency performance with respect to FAA. Additionally, this work has derived an outage probability expression, which has not been covered in most of the studies. This study gives an insight of selecting the best architecture based on the performance requirement.
Isolation and Performance Test of Green Low Dosage Hydrate Inhibitors from Local Materials for Improving Flow Assurance in Oil and Gas Industry
Authors: Madirisha Makungu , Kakwaya Julieth , Kilulya Kessy , Lugwisha Esther
Published: July 2023

The formation of gas hydrates in oil and gas industry can be minimized or prevented by the use of inhibitors. This paper reports on hemicellulose and modified lignin as low dosage gas hydrate inhibitors (LDGHIs). LDGHIs were isolated from sugarcane bagasse (SCB), plant gum exudates (PGE) of Acacia trees, and coconut coir, and further characterized by Attenuated Total Reflectance - Fourier Transform Infrared (ATR-FTIR) spectrometer, porosimeter and thermogravimetric analyzer (TGA). The PGE and SCB yielded 77.75% and 12.38% of hemicellulose, respectively, while coconut coir yielded 35.59% of lignin which was modified to sodium lignosulfonate (SLS) to improve its solubility in water. The inhibition performance of the isolated hemicellulose and modified lignin on gas hydrate was evaluated in terms of percentages of water converted into gas hydrate. In the absence of inhibitors, a large percentage of water (75.20%) was converted to gas hydrates while in the presence of the hemicellulose, the minimum amount of water converted into gas hydrates was 43.37%. The inhibition ability of hemicellulose from PGE and SCB increased with an increase in concentration. The statistical test indicated no significant difference between the percentage of water that formed gas hydrates in the presence of hemicellulose from PGE and SCB (n =4, p = 0.06 at CI = 95%). On the other hand, SLS promoted gas hydrates growth. In the presence of SLS, all liquid in the reactor was converted to gas hydrates. Thus, SLS may be used as a promoter for gas hydrates in natural gas storage and carbon dioxide sequestration while hemicellulose from both PGE and SCB as low dosage hydrate inhibitors.
Smart Grid in Tanzania: Research Opportunities
Authors: ABDALLA ABDI , Ibwe Kwame
Published: July 2023

During the past five years, the Government of Tanzania has reinvigorated its power generation capacity significantly to ensure smooth execution of its industrialization agenda and cope with the fourth industrial revolution. To ensure reliable availability of power to sustain its growing economy, Tanzania embarked on a deliberated measure to forge an energy mix. This deliberate measure encompasses the use of renewable energy technologies such as wind, solar, biomass, wastes, and micro hydro; natural gas; and other energy sources which are locally available including coal and geothermal. To effectively and efficiently manage such a growing power system and make electricity accessible to all for higher levels of industrial investment and services, the adoption of the smart grid technologies becomes inevitable. This article, tried to unveil possible potential research areas in which scholars, through academia-industry collaborations, can dwell to ensure that the Tanzania smart grid concept is seamlessly realized and maintained, with the expected efficacy. Through literature review, nine research areas have been identified as potential areas relevant to the Tanzania smart grid development.
Diagnóstico sócio ambiental de duas comunidades do município de São José dos Cordeiros (PB).
Authors:   , Ketylly Silva Leite Paolla
Published: July 2023

O manejo correto da fertilidade do solo é imprescindível para o sucesso de um empreendimento agropecuário tanto quanto para a preservação dos recursos naturais. Por isso é fundamental conhecer a percepção dos agricultores e o estado da fertilidade dos solos, de modo a assegurar a sustentabilidade econômica eambiental dos sistemas de produção agrícola. Objetivou-se com o presente trabalho, identificar a percepção do agricultores sobre a dinâmica de uso do solo e realizar o dignóstico da fertilidade do solo e da qualidade da água das comunidades rurais Cardoso e Cazuzinha, do município de São José dos Cordeiros (PB). O procedimento metodológico para o estudo de percepção foi o questionário semiestruturado com conversas informais e para o diagnóstico do solo e água a coleta de amostra e as devidas análises laboratoriais. Os resultados verificados evidenciam que 72% dos entrevistados possuem propriedades rurais de até 55 ha, equivalente ao módulo fiscal no município, com presença de degradação, uso de agrotóxicos e fertilizantes químicos. A mão de obra é familiar (85%), 33% desenvolvem atividade pecuária e 67% praticam agricultura, sendo o interesse na produção agrícola por gramíneas forrageiras (39%) e frutíferas (28%). O estudo de percepção revelou que 67% dos agricultores não verifica problemas com o solo da área de produção, mas ainda apontaram dificuldades quanto a baixa fertilidade (17%), uso/tipo de solo (6%) e salinidade (5%).O diagnóstico do solo indicousolossem limitações químicas sob o ponto de vista de produtividade vegetal, classificando-se como terras de boa qualidade. Com relação a qualidade da água, todos os poços apresentaram alguma restrição para o uso na irrigação, mas, na maioria dos casos, não comprometendo a sua utilização, sendo necessária a verificação da sensibilidade da cultura a ser irrigada quanto ao nível de salinidade e sodicidade da água.
Prospecção de fenótipos de feijão-caupi resilientes à seca no Cariri Ocidental Paraibano.
Authors:   , Araújo Martins Lucena Rosana
Published: July 2023

O feijão-caupi é uma espécie largamente cultivada em diversas regiões mundiais. No Brasil, é cultivada, principalmente, na região semiárida, desempenhando um importante papel na segurança alimentar e socioeconômica do país. Face ao exposto, as mudanças climáticas associadas ao aumento populacional global instigam a comunidade científica e os produtores rurais a buscarem genótipos mais resilientes as adversidades climáticas, como por exemplo, o estresse hídrico. Desta forma, objetivou-se realizar uma prospecção de genótipos de feijãocaupi resilientes à seca no Cariri Ocidental paraibano. O experimento foi conduzido em campo, utilizando-se delineamento em blocos casualizados, em esquema fatorial 2 ˣ 4, sendo duas lâminas de irrigação (50% e 100% de reposição da evapotranspiração da cultura - ETc) e quatro genótipos de feijão-caupi (Corujinha, Paulistinha, BRS Tapaihum e BRS Miranda). Foram avaliadas a taxa de assimilação de CO2 (A), transpiração (E), condutância estomática (gs), concentração interna CO2 (Ci), eficiência instantânea no uso da água (EiUA), eficiência instantânea de carboxilação (EiC), conteúdo relativo de água nas folhas (CRA) e extravasamento de eletrólitos intracelulares (EEI). Os dados foram submetidos ao teste de normalidade e, em seguida, à análise da variância pelo teste F (p ≤ 0,05). Verificou-se que o genótipo Corujinha expressou elevados resultados para A, gs, Ci e EiUA, quando 50% da ETc foi reposta. Também foi verificado que o genótipo BRS Miranda irrigado com 50% da ETc obteve maior A, E e EiC. Em relação ao conteúdo relativo de água na folha e extravasamento de eletrólitos intracelulares não houve resultados significativos quando 50% e 100% da ETc foi reposta. A variedade crioula Corujinha e a cultivar BRS Miranda foram considerados os genótipos de feijão-caupi resilientes à seca na microrregião do Cariri Ocidental paraibano. Esses genótipos resilientes são recomendados para cultivo nesta microrregião, pois, podem proporcionar aumento na renda e melhoria na qualidade de vida dos agricultores familiares. Novas pesquisas são sugerida para análise da produtividade desses genótipos sob restrição hídrica.
Produção de biossurfactantes por Aspergillus fumigantus utilizando o sisal como substrato.
Authors:   , Carla Oliveira de Araújo Eudocia
Published: July 2023

Os biossurfactantes são compostos de superfície ativa, sintetizada por diversos microrganismos e que têm recebido crescente interesse pelas vantagens que possuem sobre os surfactantes químicos, tais como biodegradabilidade, baixa toxicidade e produção a partir de fontes de baixo custo e resíduos industriais. O presente trabalho teve por objetivo avaliar a produção de biossurfactantes por Aspergillus fumigatus a partir do caldo do sisal (Agave sisalana) o qual foi utilizado como fonte de carbono. Foi empregada fermentação submersa por período de 192 horas utilizando o fungo filamentoso Aspergillus fumigatus. Amostras foram coletadas a cada 24 horas após o inóculo. Analisamos a produção por meio do consumo do substrato, biomassa, Índice de Emulsificação (IE), Estabilidade após 24 horas e Atividade de Emulsificação. Obtivemos os melhores resultados no tempo de 144 horas de fermentação, mantendo uma estabilidade acima de 90% com valor de pH ácido em torno de 4,74, 17,65g.L-1 de biomassa e Unidades Atividade de Emulsificação de 1,70. No planejamento fatorial 2², com triplicata no ponto central, foram analisadas as variáveis temperatura (4ºC, 30ºC, 45ºC) e salinidade (0%, 5%, 10%) em presença de óleo diesel e querosene ao longo de 60 minutos sobre o comportamento do IE. Os resultados mostraram que em presença do óleo diesel nenhum dos parâmetros avaliados tiveram influência no comportamento do IE, e os Ensaios 2 e 4 obtiveram os melhores resultados em presença de querosene, sendo constatado que nos ensaios com o querosene a temperatura foi o fator que mais influenciou no comportamento do IE. Portanto, os resultados indicam que o caldo do sisal é um substrato adequado para a produção de biossurfactantes por Aspergillus fumigatus apresentando potencial de aplicação em processos industriais e ambientais.
Análise da adsorção do Íon Ni (II) utilizando como adsorventes lodos de rab e uasb em reatores verticais de coluna.
Authors:   , Talysson Batista de Lima Pequeno Ozires
Published: July 2023

A demanda mundial de poluentes industriais vem se tornando um problema crucial. Nesse sentido a adsorção de metais utilizando resíduos sólidos orgânicos, tem se destacado, por ser um material rico em substâncias poliatômicas, e apresentar alto poder como adsorvente de metais em coluna. A fim de mitigar as consequências dessa contaminação, é desejável a aplicação de métodos de remoção desses contaminantes que sejam eficientes e de baixo custo. Desta forma, o principal objetivo desse trabalho é montar e monitorar reatores verticais de colunas contendo dois tipos de adsorventes, o lodo de esgoto obtido do reator anaeróbico de batelada (RAB) e do reator anaeróbico de fluxo ascendente (UASB), bem como investigar a capacidade de adsorção do íon Ni (II) pelos dois adsorventes e determinar os parâmetros cinéticos e os modelos isotérmicos que melhor representam o processo de adsorção. Deste modo, foram monitorados os reatores durante 100 dias, carregados com 100 g dos adsorventes, e alimentados com a solução do metal (NiCl2.6H2O). Para execução desse trabalho, foi verificada a formação de compostos químicos sobre a superfície dos adsorventes durante o processo de adsorção, através da realização de curvas cinéticas pelos modelos de pseudo primeira ordem e pseudo segunda ordem e pelas isotermas de equilíbrio de Langmuir e Freundlich, respectivamente. Por meio dos resultados obtidos pode-se concluir que o íon Ni (II) obteve uma remoção de 97,22 % para o lodo UASB em pH 6,04 enquanto para o lodo do RAB a remoção foi de 76,90 % em pH 6,33. A capacidade de adsorção do íon Ni (II) para o adsorvente do lodo UASB foi de 1,70 mg Ni.g-1 e para o adsorvente do lodo RAB de 1,35 mg Ni.g-1. A concentração do metal removido para o UASB foi de 48,61 mg L-1 e do lodo RAB de 38,45 mg L-1. O modelo cinético que mais se ajustou aos valores foi o de pseudo segunda ordem para o lodo UASB com cerca de 0,9869 de fator de correlação (R2). Para as isotermas de Langmuir e Freundlich os resultados apresentaram satisfatórios para o lodo UASB.
Produção e caracterização da farinha de peixe obtida a partir dos resíduos de tilápia utilizando secador solar.
Authors:   , Socorro Lopes Rodrigues João
Published: July 2023

O habito não ecológico dos pescadores de jogar os resíduos de peixe nas proximidades do açude vem causando mau cheiro e acumulo da presença de insetos, agravando o problema ambiental. Esse trabalho teve como objetivo produzir e caracterizar a farinha de peixe a partir dos resíduos gerados no processo de filetagem da tilápia usando secador solar. Para a realização do trabalho os peixes foram obtidos da Associação de Pescadores do Açude de Cordeiro (ASPAC) e o beneficiamento foi realizado na sede do grupo de Mulheres pescadoras da Associação do Açude de Cordeiro (MPAC) localizada no município do Congo /PB. Após o beneficiamento, a tilápia apresentou um rendimento de 33 % para a produção de filé e um valor de aproximadamente de 67 % dos resíduos sólidos (escamas, pele; vísceras e carcaças). Para produção da farinha, utilizou-se 532,75 g da carcaça (290,67 g para F1 e 242,08 g para F2), sendo que o processo foi realizado em duplicata tendo sido obtidas as farinhas 1 (F1) e 2 (F2), apresentando rendimento aproximado de 62 %. Após a elaboração, a farinha foi acondicionada em potes de vidro e armazenada em geladeira. A caracterização da farinha foi realizada para verificar a qualidade e o valor nutricional, para isso foi determinado os percentuais de proteínas, ácidos graxos e umidade. As Farinhas (F1 e F2) apresentaram os valores médios de 43, 05 % de proteínas; 8,74 % de umidade; 3,1 % de ácidos graxos, respectivamente. As análises microbiológicas realizadas foram de Salmonella typhimurium, Pseudomonas aeruginosa, Klebsiella pneumonitte e Escherichia coli. A farinha apresentou características nutricional para a formulação de base da ração animal.
Produção e avaliação de fios de sutura (simples e duplo torcidos) à base do biopolímero quitosana técnica de fiação úmida.
Authors:   , Roger Oliveira Silva Alan
Published: July 2023

Nos últimos anos, devido aos grandes avanços tecnológicos voltados para as áreas relacionadas à saúde e ao estilo de vida, como o desenvolvimento de novos produtos, usados por exemplo, em implantes e produtos relacionados à indústria farmacêutica, a expectativa de vida dos brasileiros tem aumentado. Entretanto esse avanço tem proporcionado também o acréscimo do número de pesquisas na área medica. Logo, vários investimentos vêm sendo aplicados em biomaterias, tanto na área da medicina como na área farmacêutica. Os fios de sutura fazem parte desse materiais e são utilizados em cirurgias para selar vasos sanguíneos e aproximar tecidos no tratamento de doenças ou lesões mecânicas. O objetivo desse trabalho foi de produzir fios de sutura simples (monofilamentar) e fios duplos torcidos à base de quitosana, um polímero natural derivado da quitina que apresenta propriedades estimulantes do sistema imune que aceleram a cicatrização de feridas. Foi utilizado para desenvolvimento dos fios a técnica de fiação úmida. Foram analisados os aspectos morfológicos dos fios produzidos com o auxílio do microscópio ótico e posteriormente com o microscópio eletrônico de varredura, permitiram constatar que os fios simples apresentaram aparência lisa e compacta e os fios duplos parcialmente lisos. Também foi avaliada a resistência à tração por meio da máquina universal de testes os fios duplos torcidos e simples, à concentração de 3 e 4% de quitosana, com nó e sem nó, em que se destacaram com maior resistência os fios duplos torcidos à 3% sem nó e simples à 4% com nó em comparação com a os resultados exigidos pela Norma Brasileira de Fios de sutura Cirúrgica NBR13904:2003, da Associação Brasileira de Normas Técnicas (ABNT), para fios do tipo Categut.
Produção de celulase por fermentação e estado sólido empregando resíduo de coco verde (Mesocarpo) sob a ação de um fungo isolado na fase termofílica de um processo de compostagem.
Authors:   , Rodolfo Inácio da Silva Lucas
Published: July 2023

Este trabalho objetiva estimar o efeito da umidade inicial e da temperatura de incubação na produção de celulase (CMCase) por meio da fermentação em estado sólido utilizando um isolado fúngico, denominado F1C3, que foi obtido a partir de um processo de compostagem, tendo mesocarpo de coco verde triturado como substrato. O estudo da produção de CMCase foi realizado utilizando planejamento experimental fatorial 22 com triplicata no ponto central e a análise estatística foi realizada com o programa computacional Statistica TM. O mesocarpo de coco verde triturado lavado inoculado com o Fungo F1C3 foi avaliado quanto à produção de celulase com teores de umidade iniciais de 45, 55 e 65% e temperaturas de 30, 37 e 45°C. A fermentação foi avaliada a cada 24 horas, durante 168 horas. Para o Fungo F1C3, o pico de produção de CMCase (0,6 μmol.mL-1.min-1) ocorreu em 72 horas de fermentação, a 45% de umidade e 45°C. A análise estatística demonstrou que os fatores avaliados não influenciaram a produção enzimática.
PЕRЕNCАNААN JАRІNGАN DІSTRІBUSІ АІR BЕRSІH MЕNGGUNАKАN ЕPАNЕT 2.0 DІ DЕSА АІR KUMBАNG PАDАNG PЕRMАTА
Authors: Putra Fisika Prasetyo
Published: July 2023

Dі Dеsа Kumbаng Pаdаng Pеrmаtа tеrdаpаt аnаk sungаі musі dеngаn kuаlіtаs аіr sungаі mеnurut yuаnіtа wіndusаrі dаn pеrmаtа sаrі dаlаm pеnеlіаtіаn “Kuаlіtаs Pеrаіrаn Sungаі Musі Dі Kоtа Pаlеmbаng Sumаtеrа Sеlаtаn” tіdаk lаyаk dіgunаkаn untuk kоnsumsі kаrеnа tеrіndіkаsі tеrcеmаr pоlutаn dаrі іndustrі dаn fеsеs yаng dіtunjukkаn pаdа bеbеrаpа nіlаі dаrі pаrаmеtеr ujі yаng mеlеbіh bаtаs аmbаng yаng dіpеrkеnаnkаn untuk pеrаіrаn sungаі. Untuk mеmеnuhі kеbutuhаn аіr bеrsіh mаsyаrаkаt hаnyа mеngаndаlkаn sumur buаtаn dаn аіr hujаn, sеbаgіаn pеnduduk mеmbuаt sаrіngаn buаtаn dеngаn pаsіr dаn bаtu untuk mеnghаsіlkаn аіr yаng jеrnіh аkаn tеtаpі tіdаk mеngubаh tіngkаt kеаsаmаnnyа (survеі lаpаngаn). Kаrеnа mаsyаrаkаt hаnyа mеngаndаlkаn аіr hujаn, sumur buаtаn dаn аіr sungаі dеngаn kuаlіtаs tіdаk lаyаk, mаkа dіlаkukаn pеnеlіtіаn pеncаrіаn sumbеr аіr bеrsіh sеbаgаі cоntоh аіr tаnаh dаlаm dеngаn sіstеm dіstrіbusі pеrpіpааn.Pеnеlіtіаn іnі mеnggunаkаn mеtоdе аrіtmаtіk, gеоmеtrіk dаn еkspоnеnsіаl untuk mеmprоyеksіkаn pеnduduk. Kеbutuhаn аіr dоmеstіk dаn nоn dоmеstіk mеnurut kеtеntuаn bhаskоrо 2007. Kеtеrsеdіааn аіr mеnggunаkаn mеtоdе thоrnwаіtе dаn mоck. Untuk mеndеsаіn sіstеm pеnyеdіааn аіr bеrsіh pеrpіpааn mеnggunаkаn sоftwаrе еpаnеt 2.0. Bеrdаsаrkаn hаsіl pеnеlіtіаn, jumlаh pеnduduk Dеsа Kumbаng Pаdаng Pеrmаtа pаdа tаhun 2030 аdаlаh 3946 jіwа dеngаn mеtоdе tеrpіlіh аdаlаh mеtоdе аrіtmаtіk. Jumlаh kеbutuhаn аіr mаsyаrаkаt pаdа аkhіr tаhun pеrеncаnааn аdаlаh 333.703 l/hаrі dеngаn pеmаkаіаn jаm puncаk sеbеsаr 621.642 l/hаrі. Jumlаh kеtеrsеdіаn аіr dі dеsа kumbаng pаdаng dаlаm kаtеgоrі mеncukupі sаmpаі аkhіr pеrеncаnааn yаіtu 10 tаhun. Rеncаnа аnggаrаn bіаyа yаng dаlаm mеmbuаt jаrіngаn dіstrіbusі аіr dеsа kumbаng pаdаng pеrmаtа sеbеsаr Rp. 1,731,689,670.81
History of state regulation of financial markets: Foreign practices and lessons for Ukraine
Authors: Feniuk Iana
Published: July 2023

State regulation of financial markets is important for the country’s economic policy, and its historical assessment helps identify factors of success or failure and best global practices for application in Ukraine. The purpose of this study was to investigate the history of state regulation of financial markets and to analyse the practices of forming the financial system of different countries. The main scientific methods used were analysis, abstraction, deduction, historical method, forecasting, comparison. During the study, the history of state regulation of financial markets of four countries was evaluated: the United States of America, Germany, China, and Hong Kong (as a separate administrative region of China) and Poland. It was shown that all of them have certain features in terms of their historical formation and three selected characteristics, namely the level of centralization, the openness of the financial system and the role of the state in it. Based on the analysed information, relevant conclusions were formed regarding what the control over the financial system in Ukraine should be. The level of corruption of state structures is one of the key aspects that must be considered when developing the country’s financial policy. Considering the elevated level of corruption in Ukraine, it is recommended to reduce the role of the state in regulating the financial system, implement its decentralization, and free access to the market. These measures will minimize corruption, establish competitive relations between institutions, and delegate responsibilities. This will contribute to the achievement of more effective regulation of the financial system in Ukraine, considering the needs of the country’s reconstruction after the end of the war. Given the geographical and historical proximity, the regulatory principles used in Poland can be a valuable experience for improving the Ukrainian system. The study brings new knowledge in terms of the theory of financial markets, and offers a more profound understanding of the specific features of the development of the economy of Ukraine
Effect of Disaggregated Government Expenditures on Human Development in Nigeria
Authors: A. Muazu , Alhassan A.S. , Abdullahi I.O.
Published: July 2023

This study empirically investigated the effect of government expenditure on human development in Nigeria from 1981 to 2019. Government expenditure is proxied with government capital and recurrent expenditure on health, government capital and recurrent expenditure on education and government capital and recurrent expenditure on other social and community services while human development is proxied with human development index. The study employed ex-post facto research design and secondary data were utilized. The Secondary data were obtained from Central Bank Statistical bulletin and United Nations development programme report of various years. The study tested for stationarity, and it was found that the variables are stationary at mixed order. Based on this, the study adopted Autoregressive Distributed Lag Model as the estimation technique. The study found that government capital and recurrent expenditure on health has weak and insignificant effect on human development. The study also revealed that government capital and recurrent expenditure on education has significant positive effect on human development in Nigeria. The study likewise revealed that government capital and recurrent expenditure on other social and community services has significant positive effect on human development in Nigeria. The study concluded that government expenditure through investment in education and other social and community services influence human capital development in Nigeria positively. Thus, the study recommended amongst others that the Nigeria government should increase funding of the education sector to meet education, scientific and cultural organization minimum requirement. Government should invest more on other social and community services.