bluuebunny/crossref_metadata_2025 huggingface dataset:
PENDAMPINGAN BELAJAR PADA ERA NEW NORMAL TINGKAT MI/SD DI DESA KARANGANYAR TIRTO KABUPATEN PEKALONGAN
Authors: Hayudinna Hafizah Ghany , Rahmawati Mei , Musa Muhammad Maskur , Maulidiyah Laela Azka
Published: March 2023

Banyak orang tua di Desa Karanganyar yang menyatakan ketidakpuasannya terhadap sulitnya pembelajaran online di sekolah MI/SD. Kesulitan tersebut dirasakan pada aktivitas orang tua yang semakin disibukkan dengan mengurus rumah tangga sementara juga harus mengasuh anaknya karena belajar dilakukan di rumah, dan aktivitas orang tua yang semakin disibukkan dengan mengurus rumah tangga. sekaligus harus mengasuh anaknya karena belajar dilakukan di rumah. Dengan adanya kegiatan pendampingan belajar ini bertujuan untuk membantu peran orang tua dan peserta didik tingkat MI/SD memperoleh pemahaman yang lebih efektif sebagaimana ketika sekolah tatap muka pada umumnya. Sasaran dari kegiatan ini adalah anak-anak usia tingkat MI/SD yang berdomisili di Desa Karanganyar. Adapaun metode yang dipakai pada pendampingan belajar adalah metode ceramah, diskusi dan soialisasi. Hasil dari pengabdian ini bahwa pendampingan belajar di era new normal yang dilakukan oleh aktivis organisasi desa Karanganyar ini sangat membantu untuk meningkatkan dan mengembangkan kemampuan orang tua dalam mendampingi anaknya belajar daring. pendampingan siswa dengan kegiatan bimbingan belajar yang dilakukan oleh para penggiat desa Karanganyar, seperti mendirikan tempat belajar di salah satu rumah anggota. Kegiatan pengabdian ini merupakan bagian dari program pengabdian kepada masyarakat yang bertujuan untuk menjembatani kesenjangan antara kesulitan yang dihadapi orang tua di desa Karanganyar dengan manfaat, wawasan, dan ilmu yang diberikan kepada anak-anak di desa tersebut, khususnya dalam hal peningkatan prestasi dan motivasi belajar.
PENDAMPINGAN PROSES PERIZINAN INDUSTRI RUMAH TANGGA (PIRT) SEBAGAI UPAYA MENINGKATKAN KEAMANAN PANGAN PADA UMKM ABAH KELULUT DI KOTA SAMARINDA
Authors: Kusuma Wardani Melati , Rohmah Miftakhur , Saragih Bernatal , Banin Maghfirotin Martha
Published: March 2023

Seiring berjalannya perkembangan di masyarakat, banyaknya peredaran produk pangan yang diproduksi oleh usaha industri rumah tangga, telah banyak didapati beberapa produk yang melanggar dan tidak memiliki izin edar sehingga membuat berbagai produk pangan olahan mengalami kontaminasi yang dapat membahayakan kesehatan manusia dengan produk yang illegal. Salah satu produk pangan yang harus memiliki izin edar adalah produk madu kelulut milik UMKM Abah Kelulut. Berdasarkan hal ini diperlukan pendampingan yang bertujuan untuk melakukan pendampingan penyiapan persyaratan dan implementasi pemenuhan legalitas usaha PIRT UMKM Abah Kelulut di Kota Samarinda. Proses pendampingan ini dilakukan empat tahap: observasi, penyiapan standarisasi perizinan industri rumah tangga serta pengajuan pendaftaran perizinan industri rumah tangga. Hasil kegiatan pendampingan berupa UMKM Abah Kelulut mengajukan perizinan industri rumah tangga. Pihak yang berwenang akan mengeluarkan legalitas berupa sertifikasi izin edar, hal ini tentunya akan membuat produk dapat memiliki jaminan layak edar dan sudah teridentifikasi aman untuk dikonsumsi serta dapat memberikan perlindungan kesehatan kepada konsumen.
PELAKSANAAN BIMBINGAN BELAJAR UNTUK MEMBANTU SISWA SEKOLAH DASAR DI DESA WAE IA DALAM MEMAHAMI MATERI PEMBELAJARAN DI MASA PANDEMI COVID-19
Authors: Wau Maria Patrisia , Noge Maria Desidaria , Awe Ermelinda Yosefa , Lawe Yosefina Uge , Ita Efrida , Kedhi Falentina , Mbagha Ermelinda , Dhiku Daniela Densi
Published: March 2023

Kegiatan pengabdian ini bertujuan memberi bimbingan belajar bagi siswa sekolah dasar di desa Wae Ia pada masa pandemi covid 19 agar memperdalam pemahaman materi pembelajaran selain online learning. Metode pelaksanaan dilakukan di sekolah dan dilanjutkan dengan kegiatan kunjungan rumah dalam bentuk bimbingan belajar dan penugasan dengan waktu pelaksanaan dilakukan selama bulan September dan Oktober 2021 pada hari Senin-Jumad, pukul 08.00-11.00 wita. Lokasi kegiatan dilaksanakan di sekolah dengan tetap mematuhi protokol Kesehatan. Peserta kegiatan adalah siswa-siswa sekolah dasar sejumlah 10 orang. Hasil dari kegiatan ini adalah dengan bimbingan belajar dapat meningkatkan tingkat pemahaman materi oleh siswa sekolah dasar.
Basic Education Sector Service Delivery: Challenges Faced by Managers and Practitioners in Botswana
Authors: Koboyatau Annah , Mthiyane Siphiwe
Published: March 2023

The purpose of this study was to explore the conceptualisation, practices and experiences of Education managers and practitioners regarding service delivery in the Botswana basic education sector. The study used a qualitative multiple case study, which employed social constructivism to investigate the quality-of-service delivery in the basic education sector in Botswana. Thematic analysis was used to analyse data generated through semi-structured interviews, document reviews and questionnaires. The findings of the study show that all 23 participants did not efficiently and effectively deliver services to customers. It was revealed that this was due to a top-down approach, inadequate resources, insufficient support during training and non-compliance to the implementation of service delivery policy reforms. The contribution of this study comes from the use of Public Service Dominant Theory (PSDT) and Expectancy theory in the basic education sector. This theoretical framework shifts the paradigm towards new ways of looking at things. The findings of the study call for policymakers and policy implementers to be equipped with skills and competencies, so that they would be able to understand their expectations and/or the different roles they play in policy implementation and compliance. The study found that there was a gap between policy and practice and this gap can be closed by policymakers fully interacting with policy implementers in the formulation of policy reforms aimed at improving service delivery. More research is required to identify efficient and effective ways of implementing and complying with service delivery policy reforms.

Keywords: Basic education sector, Botswana, expectancy theory, implementation challenges, public service dominant theory.
MODELING STRATEGIC PLANNING FOR SUSTAINABLE COMPETITIVE ADVANTAGE IN SUPPLY CHAIN MANAGEMENT
Authors: Al-Shammari Minwir
Published: March 2023

This paper proposes a knowledge-based customer-centric strategic model to respond to environmental challenges and achieve sustainable competitive advantage (SCA) in the supply chain management (SCM) context. The proposed model strives to leverage knowledge-based distinctive core competencies (DCCs) to improve customer satisfaction and achieve SCA. An exploratory research design has been adopted. The study undertook a systematic literature review approach with 36 articles or books published between 1970 and 2020 to construct the strategic planning model. The paper presents an integrated multi-dimensional model for SCM, including value chain activities, competitiveness strategies, business process re-engineering (BPR), and SCA. The practical result of the article is to develop a theoretical strategic planning model for SCM as a holistic framework for using the company’s DCCs and creating an SCA in a highly competitive and dynamic business environment. The proposed model comprehensively covers the supply chain (SC)’s competitive advantage strategy. For businesses that tend to adapt and triumph, the proposed model helps reduce order cycle times, reduce inventory levels, increase accuracy and efficiency, reduce costs, and improve customer service and satisfaction.
Study into the physical chemistry and technology of alkali liquid metal coolants for nuclear and thermonuclear power plants
Authors: Sorokin Aleksandr P. , Kuzina Yuliya A. , Ashadullin Radomir Sh. , Alekseev Viktor V.
Published: March 2023

It is shown that, as the result of developing alkali liquid metal coolants, including sodium, eutectic sodium-potassium alloy, lithium and cesium, the scientific basis has been established for their application in nuclear power. The paper presents data from investigations of thermophysical, neutronic and physicochemical properties and characteristics of various alkali liquid metal coolants, the content of solid-phase and dissolved impurities in coolants, mass transport of impurities in circulation circuits with alkali liquid metal coolants, development of systems for removal of impurities, and control of the content of impurities in alkali liquid metal coolants. Alkali liquid metal coolants are considered as a part of a system that includes a structural material in contact with the coolant, and a gas space that compensates for the thermal expansion of the coolant. The state of the system is defined by the physicochemical properties of the system’s components. And the coolant and the structural materials also represent subsystems consisting of a base material, a coolant and impurities contained both in the material and in the coolant. It has been shown that each alkali liquid metal coolant has its own set of impurities that define its technology. It depends on the physicochemical properties of the solution of the structural material impurities and components in the coolant. Objectives have been formulated for investigating further alkali liquid metal coolants, as stemming from the need to improve the efficiency, environmental friendliness, reliability and safety, and for extending the life of nuclear power plants in operation or under design. Alkali liquid metals are promising candidate materials for being used in thermonuclear power not only as the coolant but also as the tritium breeding medium. These include, first of all, lithium and its eutectic alloy with lead (17 at. % of lithium). The possibility for using lithium or a lithium-lead alloy as a coolant in the blanket of the international thermonuclear power reactor is compared.
Fusion-fission hybrid reactor facility: power profiling
Authors: Bedenko Sergey V. , Lutsik Igor O. , Matyushin Anton A. , Polozkov Sergey D. , Shmakov Vladimir M. , Modestov Dmitry G. , Prikhodko Vadim V. , Arzhannikov Andrey V.
Published: March 2023

The current state of research in the field of nuclear and thermonuclear power aimed at creating power generation plants makes it possible to predict the further development of modern power industry in the direction hybrid reactor power plants. Such hybrid systems include a tokamak with reactor technologies, worked out in detail in Russia, and systems with an additional source of neutrons.

Power generation plants using tokamaks and accelerators with the required level of proton energy will be of exceptionally large size and power, which will postpone their construction on an industrial scale to the distant future. The ongoing research is aimed at the development of small generation and has the prospect of entering the field of energy use in a shorter period. The hybrid reactor facility under study consists of an axisymmetric assembly of fuel blocks of a high-temperature gas-cooled reactor and a linear plasma source of additional neutrons. The paper demonstrates the results of optimization plasma-physical, thermophysical and gas-dynamic studies, the purpose of which is to level the distortions of the power density field, which are formed in the volume of the multiplicating part of the facility due to the pulsed operation of the plasma source of D-T-neutrons. The studies on increasing the “brightness” of the source and modeling its operating modes were carried out using the DOL and PRIZMA programs. The thermophysical optimization and gas-dynamic calculations were performed using the verified SERPENT and FloEFD software codes. The calculations were made on a high-performance cluster of the Tomsk Polytechnic University.
Trophobiosis between a new species of Acropyga (Hymenoptera, Formicidae) and new Neochavesia (Hemiptera, Xenococcidae) from Peru, and establishment of the Acropyga smithii species-group
Authors: LaPolla John S. , Schneider Scott A.
Published: March 2023

We describe a new pair of trophobiotic partners from the ant genus Acropyga and the root mealybug genus Neochavesia. A recent field study on Acropyga ants and associated root mealybugs, conducted in the Peruvian Amazon, led to the discovery of Acropyga manuense LaPolla & Schneider, sp. nov. and its root mealybug symbiont Neochavesia podexuta Schneider & LaPolla, sp. nov. The new root mealybug belongs to the family Xenococcidae, whose members are all obligate associates of Acropyga ants. Providing joint descriptions of new mutualist partners in the same article is a novel approach for this system, and it offers benefits to the ongoing study of mutualism and patterns of association among these symbiotic ants and scales. Here, we also begin to revise the species-group composition of Acropyga by establishing the smithii species-group, and we provide updated information to aid in identifying the new ant species and root mealybug species.
Relationship between substrate composition and larval weight: a simple growth model for black soldier fly larvae
Authors: Kieβling M. , Franke K. , Heinz V. , Aganovic K.
Published: March 2023

Black soldier fly larvae (BSFL) could play an important role as a high-quality source of protein, lipid, and other nutrients not only for animal feed but also for human consumption. However, feeding material costs for the larvae strongly influence the economic feasibility of the feed source. Therefore, the performance of several side streams originating from food production, which are legally permitted in European Union as feed grade substrates, were tested as feed in rearing BSFL. The substrates differed in their composition with respect to macronutrients, like proteins and lipids, and minor nutrients, like minerals. A commercial chicken feed substrate was used as a control, and it was replaced stepwise by the investigated substrate. The effect of the replacement on gained larval weight, survival rate, and feed conversion ratio was determined. Data were used to develop a model to predict larval weight based on the substrate contents of crude lipid and crude protein. The lipid content distinctly influenced the larval growth enabling a maximum weight gain at moderate lipid contents, whereas a very sharp decrease in larval weight gain was found for lower lipid contents in the substrate. On the other hand, influence of protein content on weight gain was linear with higher weights at higher protein contents. For the substrates included, a direct influence of the content of digestible carbohydrates on weight was not found demonstrating that this component was not the limiting growth factor in our study.
Existence and uniqueness of solution for a class of non-Newtonian fluids with non-Newtonian potential and damping
Authors: Meng Qiu , Zhao Yuanyuan , Yang Wucai , Xing Huifang
Published: March 2023

This paper discusses the existence and uniqueness of local strong solution for a class of 1D non-Newtonian fluids with non-Newtonian potential and damping term. Here we allow the initial vacuum and viscosity term to be fully nonlinear.
Microquímica do poder: psicofármacos, neoliberalismo e governo de condutas
Authors: De Azevedo Soares Silvio
Published: March 2023

Neste artigo procuro descrever certos efeitos políticos e subjetivos que se podem desdobrar do discurso psiquiátrico contemporâneo referente ao uso de psicofármacos (em especial, do Prozac). Para isso, circunscrevo – como unidades de análise – manuais de psiquiatria e psicofarmacologia, manual de saúde mental do Ministério da Saúde, publicações da Associação Brasileira de Psiquiatria e o best-seller internacional Ouvindo o Prozac do psiquiatra estadunidense Peter Kramer. Diante dos conteúdos desse corpus documental examino: a) como, nesses enunciados, se traçam ações de poder-sujeição e de governo de condutas; b) como esse conjunto de proposições sobre psicofármacos pode integrar uma estratégia neoliberal de governo das condutas (em nome da recuperação, manutenção ou potencialização do capital humano dos indivíduos). O argumento deste trabalho é que o atual dispositivo psicofármacos configura-se como um dos elementos táticos de uma biopolítica neuromolecular que apresenta convergências com as estratégias neoliberais de governo das condutas do sujeito “empresário de si”.
Ciências Humanas e Sociais aplicadas na educação básica: neoliberalismo, multiculturalismo e outros diálogos (im)possíveis
Authors: Evânio da Silva Jefferson , De Souza Robson da Costa , Burity Joanildo
Published: March 2023

Levando em consideração as recentes alterações no texto curricular da Educação Básica brasileira, bem como seus impactos na produção dos discursos presentes nos livros didáticos que integram as coleções de Ciências Humanas e Sociais Aplicadas, discutem-se as lógicas que organizam os modos contemporâneos de subjetivação política, na interseção entre duas formações discursivas distintas (neoliberalismo e multiculturalismo). Partindo de uma análise realizada em 4 (quatro) manuais didáticos contemporâneos, em diálogo com aportes da Teoria do Discurso pós-estruturalista e elementos da análise do discurso foucaultiana, o texto discute processos de equivalência e de diferenciação entre aquelas formações discursivas, visando demonstrar o modo pelo qual o discurso neoliberal pretende instrumentalizar a gramática das Ciências Sociais e do multiculturalismo para constituir uma forma de subjetividade política marcada pelo desejo de “reconciliação simbólica”, sob os signos da “troca”, da “mistura” e da “hibridização” de formas de ser e estar no mundo.
Habitus docente em Sociologia: elementos pertinentes da leitura sociológica
Authors: Cigales Marcelo , Fonseca Luca
Published: March 2023

O artigo teve por objetivo compreender as práticas e os desafios docentes em Sociologia a partir de um questionário online, respondido por 27 professores de Sociologia da educação básica do Distrito Federal. O referencial teórico utilizou o conceito de habitus de Pierre Bourdieu para questionar se haveria um conjunto de práticas e representações incorporadas por meio dos cursos de licenciatura em Ciências Sociais, visíveis a partir da prática pedagógica após o ingresso no mercado de trabalho. Foi possível destacar características que evidenciam um habitus docente em Sociologia conectado a uma estrutura do bacharelado na área por meio da análise de quatro elementos: a) características socioprofissionais; b) percepção sobre a formação; c) práticas pedagógicas; e, d) desafios docentes. Temos por hipótese de que os cursos de licenciatura ainda são pouco autônomos o que dificulta a criação de regras simbólicas de legitimação de um habitus docente em Sociologia construído a partir das suas estruturas.
Analysis of the Role of Global Information Management in Advanced Decision Support Systems (DSS) for Sustainable Development
Authors: Gupta Brij B. , Panigrahi Prabin Kumar
Published: March 2023

Timely intelligent decision support systems (DSS) are increasingly important for the sustainable development of entrepreneurship. Global information management plays an important role in accurate DSS. Judgments can be made more quickly, accurately, and objectively thanks to the availability of large data and sophisticated artificial intelligence in the realm of quantitative smart decisions. In this context, this research analyzes the contribution of global information management for sustainable business development through DSS. This paper used the Scopus database to collect relevant research papers related to the research topic. This research helps researchers analyze the recent trend and development in the field of DSS in the context of global information management.
Synthesis of Zinc Substituted Cobalt Ferrite Nanoparticles by Using Sol-Gel Method as Antibacterial Material
Authors: Zulhaina Fatimah Mufidza , Nurjanah Siti , Utari  , Riyatun  , Suharno  , Purnama Budi
Published: March 2023

The synthesis of zinc-substituted cobalt ferrite (Co0.9Zn0.1Fe2O4) using the sol gel method has been successfully carried out. The thermogravimetric analysis and differential thermal analyzer curve shows that at 400°C the Co0.9Zn0,1Fe2O4 sample has formed the final phase of nanoparticles. Therefore, the modification of physical properties was carried out by annealing treatment at temperature of 450°C, 550°C, 650°C, and 750°C. The X-rays diffraction show that all samples are in a single phase with a face center cubic space group Fd-3m structure according to the ICDD 221086. The crystal size increased with the annealing temperature 33.69 nm to 45.88 nm. The Co0.9Zn0.1Fe2O4 showed as excellent antibacterial properties on Staphylococcus aureus and Escherichia coli. The most superior antibacterial activity to Staphylococcus aureus was Co0.9Zn0,1Fe2O4 sample which was annealed at 650°C with a clear zone diameter of 39.81 mm. Meanwhile, the Escherichia coli bacteria which had the most superior antibacterial activity were Co0.9Zn0,1Fe2O4 samples which were annealed at 450°C with a clear zone measuring 21.04 mm.
Investigation of Pressing and Sintering Processes of Powder Copper Samples for Equal Channel Angular Pressing
Authors: Vinokurova Alexandra Andreevna , Poletaev Anton Pavlovich , Kotov Sergey Anatolyevich , Parshikov Ruslan Aleksandrovich , Ganin Sergey Vladimirovich
Published: March 2023

The pressing and sintering processes of copper powders produced by different methods are studied in the paper. The main research is based on PMS-1 powders, obtained by electrolysis. To find the easiest and the most reasonable sintering mode, the process is carried out in the open air and dissociated ammonia atmosphere. The samples parameters after each processing procedure were calculated, compression tests were carried out. Basing on preliminary experiments the masses and sintering modes of rectangular shape forms used for equal channel angular pressing were figured out. The possibility in principle to carry out the process of equal channel angular pressing of porous sintered samples without metal damage was shown.
Effect of Alkali Treatment and Particle Size on Sound Absorption Coefficient of Particleboards Made from Oil Palm Frond
Authors: Istana Budi , Sutikno  , Suwarta Putu , Batan I Made Londen
Published: March 2023

This study uses an experimental approach to illustrate the significance of particle size and alkali-treated on the sound absorption coefficient of oil palm frond (OPF) particleboard. Two variables were investigated: Particle size and one hour of NaOH treatment of oil palm frond. The particleboard was manufactured based on OPF material with 10% urea-formaldehyde as the binder and 1% NHCl4 as the hardener. The mixing of OPF with UF was pressed under hot-pressing of 9 tons at 140°C for 5 minutes to obtain OPF particleboard. 100 mm and 29 mm diameter of OPF particleboard were fabricated with three different particle sizes in the constant density of 0.4 g/cm3 and thickness of 10mm. Three particle sizes were fine, medium, and coarse particle sizes with a diameter of 0.2-0.6, 1-2, 2.4-4.8 mm, respectively. The SAC was determined using a two-microphone impedance tube following ASTM E 1050 at frequencies 50 to 6400 Hz. The single rate number, noise reduction coefficient (NRC), the mean of arithmetical values for the SAC at four-octave bands frequency (250, 500, 1000, and 2000), was determined. The data from experimental and calculation were obtained and investigated.
Effect of Surface Treatment of Tire Rubber on the Tensile Properties of Ground Tire Rubber/Epoxy Composites
Authors: Sugiman Sugiman , Rizaldi Didin , Salman Salman , Anshari Buan
Published: March 2023

The present work investigates the effect of surface treatment of ground tire rubber (GTR) waste on the tensile properties of GTR /epoxy composites. The GTR was treated using 10 wt% alkali solution and 1 wt% stearic acid in acetone. It was found that the treated GTR decreased the tensile strength, about 4.8 and 2.9% for NaOH-and stearic acid-treated GTR, respectively, compared to the untreated GTR. Nevertheless, the treated rubber increased the elastic modulus of the epoxy composites, about 5.2 and 9.3% for the NaOH-and stearic acid-treated GTR, respectively, compared to the untreated GTR. The strain at break and the absorbed energy of the treated GTR/epoxy composites were lower than the untreated GTR, consistent with the increase of elastic modulus for the treated GTR. Scanning electron microscopy revealed that the bonding of the stearic acid-treated GTR-matrix was good, indicating better interfacial strength than the untreated and alkali-treated GTR-epoxy matrix.
Analysis of Inclined Crack in Aluminium Alloy Plate Subjected to Three-Point Bending Load Repaired with Carbon Fiber Reinforced Polymer
Authors: Tamboli Shahid , Pandey Chand , Sonawane Chandrakant , Shaikh Chand
Published: March 2023

If the attention is not paid to the crack in a structure, then it could suddenly propagate at a rapid rate and rip apart the structures. A small crack needs urgent attention and repair since replacing the parts with a small crack is not economically feasible at all the time. Repairs were used to be carried out through rivets, welding and nut-bolts, but recently composite materials are showing promising results in this field. Since composite material are anisotropic in nature their application needs careful study about the loading pattern on the repaired structure. In this study, Carbon Fiber Reinforced Polymer (CFRP) was used as a composite material to repair Aluminium alloy specimens. These specimen were subjected to a three-point bending load to investigate the effectiveness of CFRP. By using innovative ply drop technique and design of experiment a configuration was selected to sustain three-point bending load. To suppress the CFRP’s peeling off tendency, attention was given to the interfacial shear stress rather than to the fracture toughness parameter.
Durability Study of Glass/Carbon Hybrid Composites Immersed in Seawater for Marine Application
Authors: Abdurohman Kosim , Adhitya Mohammad , Nugroho Afid
Published: March 2023

The hybridization of carbon fiber (CFRP) and glass fiber (GFRP) composites is required to overcome the disadvantages of GFRP composites and their commercial feasibility for marine applications. This study was conducted on a hybrid glass/carbon composite with a vinyl ester matrix made by vacuum-assisted resin infusion process with a stacking sequence of [GCG2CG2C] s. Composites are immersed in natural seawater for up to 6 months. The maximum weight gain of e-glass/carbon hybrid composite is 0.79%. The results showed that the tensile, shear and compressive strengths of the glass/carbon hybrid composite after immersion in natural seawater decreased to 19%, 13%, and 50%, respectively. The decrease in compressive strength is the highest compared to others. It indicates that compressive strength should be of more significant concern for marine environmental applications. SEM analysis exhibited that seawater absorption causes the matrix, fiber, and fiber/matrix interface degradation. It is indicated by the absence of a firm matrix fracture surface, the number of fractures in the thread, the presence of fiber/matrix debonding, and fiber pull-out in the specimen after immersion in seawater. It is the cause of the decrease in the mechanical properties of the hybrid composite.
Performance of Tri-Adhesive Joints to Improve the Shear Stress Distribution of Lap Joints
Authors: Hardi Witono , Pramono Agus Sigit , Yohanes
Published: March 2023

The adhesive lap joints are extensively used in various engineering fields. Various methods were proposed to increase the strength of the lap joint. This paper presents the lap joint's characterization by applying three grades of adhesives in different material properties along the bond line. The stiffest adhesive is employed in the middle bond line, then gradually, those with a lower modulus of elasticity are placed at the ends of the lap joint. This technique reduces the stress concentration at the joining ends, so the stress distribution becomes smoother. Finite element analysis is used to model this problem in two dimensions. One of the adherent edges is applied to the fixed support, and the other end is subjected to tension. The analysis results show that the use of tri-adhesive changes the shear stress distribution along the bond line flatter and increases the strength of tri-adhesive lap joints compared to those single type adhesive applied individually.
Effect of Post-Curing Heat Treatment on Tensile Properties of Carbon UD/Vinyl Ester Composite with VARI Manufacturing Method
Authors: Isna Lathifa Rusita , Abdurohman Kosim , Nuranto Awang Rahmadi , Pratama Aris , Arum Wahyuni Fajar
Published: March 2023

In terms of enhancing the mechanical properties of the com-posite material, we investigate the effect of different post-curing tem-peratures on the tensile strength, strain, and elastic modulus of carbon UD/Vinyl Ester composite. The performance of composite material can be developed by modifying the condition of manufacture to en-hance the bonding between resin and fibre. The best interlocking will occur upon the complete polymerization reactions of the resin. It was characterized by the formation of the polymer cross-link chain. These conditions are commonly called curing conditions. We did three dif-ferent post-curing treatments for this composite, they were conditioned at room temperature (approximately 25° C), 80° C, and 100 ° C, for 24 hrs, 4 hrs, and 4 hrs time respectively. The tensile properties have al-ready been tested for both composites that refer to ASTM D3039. The Ultimate Tensile Strength (UTS) of three different heat treatment composites was increased by increasing the heat temperature from 25° C to 80°C and 100° C, the increment is about 1.17% and 17.46% ap-proximately. Furthermore, still comparing with the 25° C post-curing treatment, the modulus of elasticity value with heat treatment in 80 ° C is a little bit decreased to 7.29% but it decreased significantly for 47.42% in 100° C heat treatment.
Exothermic Reactions in AlNi Foils Produced by Rolling Powders
Authors: Kotov Sergey Anatolyevich , Yunusov F.A. , Kiryanov A.A. , Larionova Tatiana V.
Published: March 2023

The possibility of manufacturing multilayer reaction foils of the Al-Ni system by rolling a powder mixture is considered. The sequence and temperatures of phase transformations during heating was established by the differential thermal analysis and X-ray phase analysis. The formation of the intermetallic compounds in the foils fabricated via rolling just mixed powder occurs only when a liquid phase appears (660°C). However, the foils fabricated from mechanically activated powders exhibit significant exothermic effect at temperature of 320°C unnecessarily for a liquid phase formation and can be proposed as a multilayer reactional foils for local heating in the technology of joining of various materials.
Inventory of Insulin Access in Tunisia, IDF-MENA Region
Authors: Elleuch Mouna , Mnif Fatma , Malouf Jackie Kassouf , Benlassoued Mohamed , Kamel Mesbah Sayed , Abid Mohamed
Published: March 2023

The prevalence of diabetes is rising faster in low- and middle-income countries. In IDF-Middle East and North Africa (MENA), one in six adults (73 million) are living with diabetes, and the number of adults with diabetes is expected to reach 95 million by 2030 and 136 million by 2045. Tunisia, a part of the IDF-MENA Region, is burdened with diabetes that is responsible for substantial morbidity and mortality, as well as considerable healthcare expenditure. The prevalence of type 2 diabetes has increased from 3.8% in 1976 to 18.2% in 2019. It is higher in men. In 2016, distribution by type of treatment analyzed that 22.1% of treated people with diabetes (PWD) were on insulin and 9% were on insulin and oral antidiabetic drugs (OADs). This study confirmed that 27.4% have had good control of diabetes. PWD receiving insulin do not have good control of diabetes as compared to PWD treated on oral antidiabetic drugs. The government controls all medicines pricing including insulin. The prescription of insulin depends on the organization of care. The patients can receive their treatment of diabetes either in the primary healthcare or in the hospital. Therefore, access to insulin is provided, for patients, in both rural and urban areas and in the public and private sectors. Additional challenges to insulin administration include the fact that some health professionals do not know how to use insulin analogs as they were training only on human insulins. Therefore, in Tunisia many efforts are needed to improve the prescription and the accessibility of insulin.
Climate-related variables may not improve monthly scale rainfall predictions by artificial neural networks for the metropolitan region of Belo Horizonte, Brazil
Authors: Silva Mateus Alexandre da , Merlo Marina Neves , Thebaldi Michael Silveira , Ferreira Danton Diego , Schwerz Felipe , Deus Fábio Ponciano de
Published: March 2023

Artificial neural networks (ANNs) may experience problems due to insufficient or uninformative predictors, and these problems are common for complex predictions such as those for rainfall. However, some studies point to the use of climate variables and anomalies as predictors to make the forecast more accurate. This research aimed to predict the monthly rainfall, one month in advance, in four municipalities of the metropolitan region of Belo Horizonte using an ANN trained with different climate variables; additionally, it aimed to indicate the suitability of such variables as inputs to these models. The models were developed using the MATLAB® software Version R2011a using the NNTOOL toolbox. The ANNs were trained by the multilayer perceptron architecture and the feedforward and backpropagation algorithm using two combinations of input data, with two and six variables, and one combination of input data with the three most correlated variables to observed rainfall from 1970 to 1999 to predict the rainfall from 2000 to 2009. The climate variable most correlated with the rainfall of the following month was the average compensated temperature. Even when using the variables most correlated with precipitation as predictors (0.66 ≤ nt index ≤ 1.26), there was no notable improvement in the predictive capacity of the models when compared to those that did not use climate variables as predictors (0.55 ≤ nt index ≤ 0.80).

Keywords: artificial intelligence, ENSO, hydrological modelling.
Pratiques d’alimentation des caprins Kirdimi, dans le Département de la Tandjilé-Centre, Tchad
Authors: Odjigue Nestor , Odjigue Nestor , Tellah Madjina , Assadi Michel , Leng Tchang Brice , Baizina Mama , Mopate Logtene Youssouf
Published: March 2023

L’objet de cette étude a été d’identifier les pratiques d’alimentation des caprins Kirdimi dans le Département de la Tandjilé-Centre. L’étude s’est déroulée de décembre 2021 à janvier 2022 dans 21 villages. Les données ont été collectées auprès de 315 ménages agro-éleveurs choisis de manière aléatoire. Il ressort que les ressources alimentaires consommées par les caprins sont : les fourrages naturels, les résidus de récolte et les compléments alimentaires (sous-produits artisanaux, agro-industriels et les déchets de cuisine). Quinze (15) herbacées et vingt-cinq (25) ligneuses fourragères les plus consommées par les caprins ont été identifiés. Trois (3) types de complémentations ont été identifiées : le type 1 qui renferme 89,71% des éleveurs dont les animaux reçoivent les sous-produits artisanaux, le type 2 où 9,65% des éleveurs qui utilisent les sous-produits artisanaux et les sous-produits agro-industriels et le type 3 minoritaire où seulement 0,64% des éleveurs complémente avec les sous-produits agro-industriels. Les ressources alimentaires des caprins dans la Tandjilé-Centre sont constituées surtout des fourrages des parcours naturels et des sous-produits (de récoltes, agroindustriels et artisanaux). Une analyse bromatologique permettrait d’apprécier leurs valeurs alimentaires afin de mieux les valoriser dans l’alimentation des caprins et améliorer leurs performances zootechniques.

The purpose of this study was to identify the feeding practices of Kirdimi goats in the Department of Centre Tandjilé. The study took place from December 2021 to January 2022 in 21 villages. Data were collected from 315 randomly selected agro-pastoralist households. It appears that the food resources consumed by goats are: natural fodder, crop residues, and food supplements (artisanal by-products, agro-industrial, and kitchen waste). Fifteen (15) herbaceous and twenty-five (25) woody forages most consumed by goats have been identified. Three (3) types of supplementation have been identified: type 1 which contains 89.71% of livestock farmers who receive artisanal by-products, type 2, or 9.65% of farmers who use artisanal by-products and agro-industrial by-products and minority type 3 where only 0.64% of farmers supplement with agro-industrial by-products. The food resources of goats in the Centre Tandjilé Department consist mainly of fodder from natural rangelands and by-products (harvests, agro-industrial and artisanal). A bromatological analysis would make it possible to assess their food values to better value them in the diet of goats and improve their zoo technical performance.
Impacts des arbustes au champ sur la fertilité du sol, la croissance et le rendement du sorgho
Authors: Tyano Abdoulaye , Hien Mipro , Yelemou Barthélemy
Published: March 2023

Rehausser la fertilité des sols est un impératif pour les pays de l’Afrique sub-saharien. Cela pourrait passer par l’intensification écologique des sols. Cette étude est une contribution à l’évaluation des effets des arbustes au champ sur la fertilité du sol. Le dispositif de l’essai a consisté en des placettes circulaires de rayon 1 m installés sous et hors houppier des arbustes. Des échantillons du sol ont été prélevés dans l’horizon 0-20 cm du sol dans ces placettes. Le suivi de la croissance du sorgho et l’évaluation des rendements ont été réalisé. Les résultats montrent que les zones de paillage ont un pH moyen de 6,62 tandis que les témoins ont une valeur moyenne de 5,45. Les teneurs de carbone total, d’azote total et de potassium total du sol sont plus élevées au niveau des arbustes que dans les zones témoins. Les rendements paille et grain de sorgho ont été améliorés par les souches de toutes les espèces arbustives suivis. Un paillage réalisé sur une superficie de 10% à l’hectare a permis un gain de 285 kg de grain par rapport au témoin. Cette étude a montré que la gestion des arbustes dans les champs permet d’améliorer la fertilité du sol et le rendement du sorgho.

Enhancing soil fertility is an imperative for sub-Saharan African countries. This could be achieved through ecological soil intensification. This study is a contribution to the evaluation of the effects of field shrubs on soil fertility. The experimental design consisted of circular plots of radius 1m installed under and outside the shrub crowns. Soil samples were taken from the 0-20 cm soil horizon in these plots. Sorghum growth monitoring and yield evaluation were performed. The results showed that mulched areas have an average pH of 6.62 while the controls have an average value of 5.45. Soil total carbon, total nitrogen, and total potassium levels were higher in the shrub areas than in the control areas. Sorghum straw and grain yields were improved by the stumps of all shrub species monitored. A mulching of 10% per hectare resulted in a 285 kg grain gain compared to the control. This study showed that the management of shrubs in the field can improve soil fertility, growth and yield of sorghum.
Evaluation de la qualité des noix de cajou dans la région des Cascades, au Burkina Faso
Authors: Ouedraogo Severin , Guira Moussa , Tarpaga Windpouiré Vianney , Ki Léonce , Golane/Saki Vanessa , Kiema Sébastien , Ouedraogo Léonard , Pizongo Jean Chrysostome , Hiema Félix D.
Published: March 2023

L’anacardier (Anacardium occidentale L.) est une espèce fruitière d’intérêt économique au Burkina Faso. Les acteurs se fondent sur l’aspect extérieur de la noix pour fixer le prix. Cette pratique est très aléatoire car le véritable baromètre pour la fixation des prix des noix de cajou est le Kernel output ratio (KOR). La présente étude a eu pour objectif de déterminer la qualité marchande des noix brutes d’anacardiers dans les provinces de la Comoé et de la Léraba. Le critère déterminant dans la constitution de l’échantillon de l’étude a été l’intensité de la production de noix de cajou. Ainsi, l’échantillon était issu de 11 départements de la région des Cascades. Au total pour la collecte des noix, l’échantillon était composé de 165 producteurs dont 3 producteurs par village et 5 villages par département. Les résultats de l’étude ont montré que les noix de la région des Cascades sont de faible qualité avec un KOR moyen de 45,39 livres (lbs). Par ailleurs, le grainage et le taux de défaut sont négativement corrélés au KOR avec des coefficients respectifs de -0,2865 et -0,8719. Il apparaît la nécessité d’une sensibilisation des acteurs pour une meilleure adoption des bonnes pratiques de production et de post-récolte.

The cashew tree (Anacardium occidentale L.) is an economically important fruit species in Burkina Faso. Actors base their prices on the external appearance of the nut. This practice is very random, as the real barometer for setting cashew nut prices is the Kernel output ratio (KOR). The objective of this study was to determine the marketability of raw cashew nuts in the provinces of Comoé and Léraba. The determining criterion in the constitution of the study sample was the intensity of cashew nut production. Thus, the sample was drawn from 11 departments in the Cascades region. In total, the sample was composed of 165 producers, with 3 producers per village and 5 villages per department. The results of the study showed that the nuts from the Cascades region are of low quality with an average KOR of 45.39 lbs. Moreover, the graining and the defect rate are negatively correlated to the KOR with respective coefficients of -0.2865 and -0.8719. It appears that there is a need to sensitize the actors for a better adoption of good production and post-harvest practices.
Socio-economic indigenous drivers of soils and water conservation practices use to cope with climate change in the region of Plateau Central in Burkina Faso
Authors: Ouédraogo Harouna , Diallo Yacouba , Hien Edmond , Yaméogo Louis Poulouma , Udo Nehren
Published: March 2023

Continuous soil degradation and recurrent droughts caused by climate change are challenging agricultural production in the Central Plateau region of Burkina Faso. Some management techniques were developed and disseminated to farmers, in order to reduce the effects of drought and restore degraded soils. However, the adoption rate of these techniques is still low. The present study aimed at identifying and analysing the indigenous determinants of the adoption of zaï and stone rows techniques by farmers. Zaï is a small planting pit of about 20–30 cm in width, 10–20 cm deep, and filled with organic matter (manure, compost or dry biomass). Stone row is an anti-erosive device built of blocks of rubble assembled by a series of two to three. Data were collected through a survey carried out on 135 heads of households in four municipalities in the provinces of Kourwéogo and Oubritenga. A binary logistic regression model was used to analyse the factors determining the adoption of zaï and stone rows practices. The results showed that the level of education, membership to a local organization and cattle ownership positively influenced the adoption of zaï. In addition, membership to a local organization positively affected the adoption of stone rows. In contrast, the practice of small trading negatively affected the adoption of zaï. Therefore, it is essential for institutions, policymakers and NGOs to consider these factors in order to make their interventions more efficient in a global change context.
Microbiological quality and antimicrobial resistance of Salmonella spp. and Escherichia coli isolated from grilled meat
Authors: Erbi Denis , Somda Namwin S. , Doutoum Abdelsalam A. , Ali Hassan M. , Cissé Hama , Hien Yeri E. , Tidjani Abdelsalam , Savadogo Aly
Published: March 2023

In Chad, grilled meat has been well appreciated and consumed regularly. However, it could be the cause of many diseases if handled under unhygienic conditions. The objective of this study was to evaluate the microbiological quality and antimicrobial resistance profile of strains of Salmonella spp. and Escherichia coli isolated from grilled meat in the city of N'Djamena. Thirty producers were surveyed at least once from 02 August 2018 to 31 January 2019 and one grilled meat sample was collected from each of them. Total Mesophile Aerobic Flora (TMAF), Thermotolerant Coliform (TTC), Escherichia coli and Salmonella spp. counts, as well as susceptibility testing, were conducted at the Food and Nutrition Sciences Research Laboratory in N'Djamena according to standard methods. The level of the contamination of grilled meats was 83.33% for TMAF and 56.67% for TTC. The prevalence of Escherichia coli was 36.36%. Resistance was observed with some antibiotics especially those to the beta-lactam family. This study revealed that the grilled meat can expose the consumers to a sanitary risk. It should be stressed the strict application of good hygiene practices.
Profil bactériologique des eaux de baignade de la préfecture de Dubreka (République de Guinée)
Authors: Diallo Souleymane , Bah Boubacar Sidy Sily , Balamou Ouo-Ouo , Bah Thierno Amadou Tinka , Diallo Amadou Sékou
Published: March 2023

Le contrôle de la qualité de l’eau joue un rôle important dans la santé publique car celle-ci est susceptible d’engendrer des altérations catastrophiques sur le sol, sur l’organisme humain et en général à la santé de la population. Lors de la pratique d’activités aquatiques les maladies infectieuses se développant par ingestion d'eau contaminée pourraient provoquer, des gastroentérites, des dermatites, des otites externes et des conjonctivites. L’objectif de l’étude, réalisée de juillet à Septembre 2021 était de contribuer à l’évaluation de la qualité microbiologique des eaux de baignade. La méthode de filtration sur membrane utilisée a montré la présence des indicateurs bactériologiques de pollution à l’exception des prélèvements effectués sur les fleuves où les Entérocoques Intestinaux étaient absents. Les Entérocoques Intestinaux et Escherichia coli ont été utilisés comme repère dont les valeurs seuils sont fixées par l’OMS. Au niveau des ruisseaux, sur 20 prélèvements, 2 ont été positifs pour les Entérocoques Intestinaux (330 germes/100ml) et 13 positifs pour Escherichia coli (611 germes/100ml). Des 6 prélèvements des rivières, 1 a été positif pour les Entérocoques Intestinaux (310 germes/100ml) et 4 pour Escherichia coli (500 germes/100ml).La présence des bactéries indicatrices de contamination fécale indique le risque potentiel que représentent ces sources d’eau.

The control of water quality plays an important role in public health because it is likely to cause catastrophic alterations on the ground, on the human organism and in general on the health of the population. During the practice of aquatic activities, infectious diseases developing by ingestion of contaminated water could cause gastroenteritis, dermatitis, otitis externa and conjunctivitis. The objective of the study, carried out from July to September 2021, was to contribute to the assessment of the microbiological quality of bathing water. The membrane filtration method used showed the presence of bacteriological indicators of pollution with the exception of samples taken from rivers where intestinal enterococci were absent. Intestinal enterococci and Escherichia coli were used as benchmarks, the threshold values of which are set by the WHO. At the stream level, out of 20 samples, 2 were positive for Intestinal Enterococci (330 germs/100ml) and 13 positive for Escherichia coli (611 germs/100ml). Of the 6 river samples, 1 was positive for Intestinal Enterococci (310 germs/100ml) and 4 for Escherichia coli (500 germs/100ml). The presence of faecal indicator bacteria indicates the potential risk posed by these water sources.