bluuebunny/crossref_metadata_2025 huggingface dataset:
Mechanical, thermal, and morphological properties of poly(lactic acid) (PLA)/ recycled tyre rubber waste compatibilised with chain extender
Authors: Qasem Ramzi , Mat Piah Mohd Bijarimi , Alhadadi Waleed
Published: January 2024

The accumulation of waste tires in our society is a pressing issue due to their short lifespan and increasing demand. This research delves into effective methods for recycling waste tires, with a particular focus on utilizing biopolymers. Polylactic acid (PLA), a completely biodegradable polymer, has gained popularity for its biocompatibility, biodegradability, mechanical strength, and ease of processing. To overcome its toughness and thermal stability limitations, PLA has been blended with commercial polymers, such as rubber. Furthermore, the incorporation of recycled tire waste into PLA has demonstrated the potential to enhance its durability and strength. Joncryl® ADR is used as a chain extender and reactive compatibilizer to enhance the chemical interactions in the binary blend. The samples were prepared using a twin-screw extruder with the temperature between 150 and 190 ºC and 60 rpm of screw speed. These blends are then analyzed using a range of characterization techniques, including Fourier transform infrared (FTIR) spectroscopy, differential scanning calorimetry (DSC), scanning electron microscopy (SEM), tensile testing, and notched Izod impact testing. The blends were then characterized by chemical changes, thermal transitions, and thermal degradation. it was found that the 90/10/0.6 (PLA/RW/ADR) nanocomposite exhibited maximum thermal degradation.
Investigation of the Aging Effect of Bio-Coagulant for Oily Wastewater Treatment
Authors: Razali Mohd Najib , MOHD RAMLI NAJMUDDIN , Mohd Tarmizi Syahirah Syazwani , Ishag Obi Nasreldeen
Published: January 2024

The separation of oily wastewater is one of the main processes in the water treatment field. A biological approach that can replace the use of chemical coagulants hazardous to human health is an efficient solution in treating oily wastewater. However, bio- coagulants have a time limit that can affect their effectiveness in treating oily wastewater. Thus, this paper presents research for the aging effect of bio-coagulant for treating oily wastewater. In this study, G-Treat was used as the bio-coagulant, which was produced from chitosan powder, acetic acid, and deionized water. The experimental procedure started by filling 500 mL of oily wastewater into a beaker. Next, 10 wt. % of G- Treat was added into the beaker for the jar test, which was mixed for 30 min at 150 rpm, followed by 2 h settling time. Then, the mixture was separated using filter paper. The analysis of oily wastewater characteristics was conducted using five types of analyses, which are pH, chemical oxygen demand (COD), biological oxygen demand (BOD), total sus- pended solids (TSS), and oil and grease (O&G) under the parameters of days (0–7 days), weeks (0–6 weeks), and months (0–3 months). From the result, the best performance of G-Treat was achieved at the optimum parameters during week 2, with 33.16%, 65.75%, 35.73%, 28.58%, and 0% removal of pH, COD, BOD, TSS, and O&G, respectively. In conclusion, the studied bio-coagulant demonstrated higher removal of pH, COD, BOD, TSS, and O&G at optimum parameters, and eventually, the level of effectiveness will drop.
Ferromagnetic Enhancement of Microcrystalline Cellulose via Chemical Reduction Method
Authors: Omar Siti Hajar , Mohd Yunus Rosli , Khan Md. Maksudur Rahman , Saari Mohd Mawardi
Published: January 2024

Iron oxide nanoparticles (NPs) have potential in biological, biomedical, and environmental applications because of their magnetic susceptibility, stability, and biocompatibility characteristics. However, it also has limitations, such as the aggregation of magnetic NP. Thus, the outer surface of the particles should be modified by coating materials. This paper focused on synthesizing iron oxide by chemical reduction method and coating it with Fe(III) nitrate, PVP, and hydrazine. The coating solution at two different concentrations was prepared to determine effective and economical usage conditions. The effect of coating iron oxide with microcrystalline cellulose (MCC)  was conducted at different concentrations of iron oxide on the nanomaterials with respect to morphological, thermal, and magnetic susceptibility. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) indicated good morphology images of FeNp-MCC. Energy dispersive X-ray (EDX) spectra reveal the presence of carbon, oxygen, and iron in the synthesized microparticles.TGA analysis showed iron material was succesfully formed into the surface of microcrystalline cellulose. Lastly,the magnetism results proved that cellulose is strongly interacting with magnetite nanoparticles.
Molecular Dynamics Simulation Study of the Diffusion of Carbon Dioxide in Heptane: Application in Natural Gas Cleaning
Authors: Ahmed Abubakar S , Ahmed Murtala , Bello Aliyu
Published: January 2024

Using solvents to remove carbon dioxide is an effective way to purify natural gas. Diffusion of solute in solvent is key to natural gas purification. In this study, molecular dynamics (MD) simulations of the diffusion of carbon dioxide in heptane at different temperatures and pressures were performed to simulate the conditions of industrial purification process. The diffusion coefficients were measured in two different configurations; pure solvent and binary solute-solvent systems. The diffusion coefficients of the binary system were observed to be in the order of 10-9 m2/s. An increased temperature was observed to increase the diffusion coefficient of the carbon dioxide in heptane while an increase in pressure reduced the value of the diffusion coefficient. The diffusion coefficient was also observed to follow an Arrhenius-type relationship with respect to temperature. The activation energy of the system increased from 9.228 kJ/mol to 11.139 kJ/mol with pressure increase. A linear relationship was detected between the diffusion coefficient and the viscosity of the system and an increased viscosity of the system results in a decreased diffusion coefficient. The results of the research showed that carbon dioxide behavior in heptane offers the theoretical backing for the development of a new natural gas desulphurization solvent.
Optimization of Color Fractionation of Monascus Pigment
Authors: Mohd Said Farhan , Daud Nur Fathin Shamirah
Published: January 2024

Monascus fungi are unique among the various microorganisms that produce edible pigments, which consist of red, orange and yellow. These pigments are typically present in a mixture. Hence, pigment separation is needed. This study aims to optimize solvent systems that can effectively fractionate the pigments. The optimization was carried out using column chromatography and the data was analyzed using Central Composite Design (CCD). The interaction of the solvent systems ethyl acetate : formic acid : acetic acid : water was optimized. The optimal solvent system obtained was 98 : 14 : 12 : 28 (vol/vol.) for ethyl acetate : formic acid : acetic acid : water, respectively. The red and yellow pigment obtained were 2.42 mg and 0.93 mg, respectively. Based on the finding, 72.2% of the Monascus pigments was red while remaining was yellow.
Clonal Preselection in Grape (Vitis vinifera L.) Varieties of Ekşi Kara and Gök Üzüm
Authors: Kara Zeki , Sabir Ali , Yazar Kevser , Doğan Osman , Khaleel Ahmed jalal khaleel , OMAR OMAR Ali Imad , DEMİRTAŞ Mehmet Naim , ÖNDER Serkan , Gungor Savas Nurdan , bağcı mustafa
Published: January 2024

Ekşi Kara (functional female flowers) and Gök Üzüm (hermaphroditic flowers) are the two most important autochthonous varieties of middle Anatolia. This clone selection study started with mass-selection in producer vineyards consisting of approximately 5000 vines by The International Organization of Vine and Wine (OIV) clonal selection procedure. Two-years genetic and sanitation were examined visually in population and 220 clone candidates were ampelography and fertilization biology and bud fertility determined for Ekşi Kara variety. The clone candidates were ranked at the level of sums, with weighted grading of three-year yield, growth, and quality records. Sanitation analyses of the superior clones were made. 17 clones in the Ekşi Kara grape variety were selected according to their superior scores in genetic selection and sanitation analyses. Eleven clones were selected by mass selection from Gök Üzüm carried out in a single location, and 2 clones were selected with genetic selection scores and health tests. Grapevine fleck virus (GfKV) was the most common ( 29%) in the samples tested, Grapevine leafroll-associated virus 1+3 (GLRaV-1 + 3,  26%), Grapevine virus A (GVA, 12%), Grapevine leafroll associated virus-2 (GLRaV-2,  3%), Arabis mosaic virus (ArMV) / Grapevine fanleaf virus (GFLV) ( 1%) are fallowed with indicated percentage. Although virus and bacterial infections are common in the vineyards, enough healthy clones were selected. 17 Ekşi Kara and 2 Gök Üzüm clones selected as pollinators were grafted onto the 110R rootstock for clone comparison in homogeneous conditions, and a "Clone Comparison Vineyard" was established in Selçuk University.
Selection of Superior Properties of Walnut Genotypes in Ereğli-Halkapınar (Konya) and Ayrancı (Karaman) Walnut Population
Authors: Yavuz Mahmut , PIRLAK LÜTFİ
Published: January 2024

This selection study was conducted to determine the walnut genotypes with superior characteristics grown from seeds in Ereğli and Halkapınar districts of Konya province and Ayrancı district of Karaman province between 2019-2022. In 2021 on the fruits taken, 8 genotypes in total, including 5 genotypes in shelled walnuts and 4 genotypes in kernels (1 genotype received high scores in both shelled and kernel walnuts) were found to be promising. In 8 genotypes selected, the shelled weight is 10.66-26.31 g, the kernel weight is 5.32-9.82 g, the kernel percentage is 37.33-57.91%, the shell thickness is between 1.06-1.90 mm, the shell color is “light” in 1 genotype, “moderate” in 4 genotypes, “dark” in 3 genotypes, kernel color is in 1 genotype “extra light”, “light” in 7 genotypes, remove of kernel from the shell was “easy” in all genotypes. Shell adhesion was “good” in all genotypes, cracking of the shell was detected “easy” in 7 genotypes, “moderate” in 1 genotype, shell texture was “smooth” in 3 genotypes, “moderate” in 4 genotypes, and “rough” in 1 genotype. Remove of kernel from the shell was determined “easy” in all genotypes. Kernel fill and healthy kernel percentage was determined as 100% in all genotypes. At the end of the research, 6 of the selected genotypes showed homogamy, 1 showed protogeny and 1 showed protandry flowering properties.
The Effect of Some Plant Growth Regulators on Callus Culture of Different Pistachio Varieties
Authors: Bozkurt Taner , ERGÜN Zeynep
Published: January 2024

Pistachio (Pistacia vera L) is one of the oldest cultivated plants in the world. Its fruits are rich in protein, minerals, carbohydrates, fiber, and vitamins. In addition, the demand for these plants is increasing due to the fact that they are very tasty and nutritious. On the other hand, pistachio cultivation is quite difficult. In addition, many problems are encountered in germination with seeds or reproduction with cuttings. These situations necessitate the development of different in vitro tissue culture protocols. In this study, callus culture optimization protocol was developed by using seeds of three different pistachio cultivars. Murashige and Skoog (MS) medium was supplemented with different concentrations of NAA, IAA, 2,4 D and BAP. When callus size (1,776 cm), callus weight (0.908 g) and embryogenic callus regenerations (27.94%) were considered, it was found that the best variety was Tekin. Again, in the evaluation made according to these factors, it was determined that the best improvement was in the MS medium containing 3 mg/L BAP and 1 mg/L 2,4D. The contamination rate detected throughout the studies ranged from 7.65% to 12.91%.
Breeding Sunflower (Helianthus annuus) Assisted With Speed Breeding Drough Tolerance Tests
Authors: Cil Ayse Nuran
Published: January 2024

Sunflower production in the world is expending towards marginal areas, along with rapid changes in cultural practises like no-till planting and weed management. The frequency and severity of abiotic constraints also rise as a result of climate change. Helianthus annuus is well-known for its adaptability to a wide range of agronomic conditions, by its robust root system that is capable of absobing water from deeper soils. However, water stress lowers grain yields and fatty acid content with complex phenotypic, physiological and biochemical signs. In this study which was carried out to develop parental lines tolerant or high-tolerant to drought, physiological screenings were carried out on 8 sunflower genotypes. Genotypes were planted in pots in a greenhouse and grown at three different irrigation levels (I100, I66 and I33). The genotypes were watered together until they reached the 6-8 leaf stage. Then, each genotype was managed and irrigated solely. Number of days between sowing and floweing days, number of days between sowing and number of days between sowing and number of days to transfer the embryo to the nutrient medium, plant height, head diameter, number of seeds in the head was between 52-67 days; 65-80 days; 50-200 cm; 3.0-13.0 cm; 25-500 pieces, respectively. Plant weight, plant high, root length, number of leaf, nnmber of days from transplant to glasshouse, number of days from transplant to field was between 0.22-0.45 g; 2.09-4.62 cm; 1.70-5.27 cm; 3.60-5.87 pieces; 5 or 6 days; 10-12 days, respectively. In the experiments, it was found that two and a half generations could be achieved in one year. The genotypes K26-33 and K78-100 are located closest to the center as the most ideal genotypes in terms of the examined characteristics. In the MS environment, in terms of the characteristics examined, the genotypes K105-100, K78-100, K105-66, K26-100 and K1-100 were the preferred genotypes as they are located close to the center.
Forage Pea Pure Lines: Winter Hardiness, High Seed and Biological Yield
Authors: Ceyhan Ercan , KARADAŞ SERDAR
Published: January 2024

Winter forage pea is a plant that grows in cold climates and is a valuable source of protein for animal feed. In this study, 13 pure forage pea lines (PS3057M1, PS3057M2, PS3073G1, PS3073G2, PS3073G3, PS4028H1, PS4028H2, PS4028H3, PS4028H4, PS4053M1, PS4053M2, PS4053M3 and PS4053M4) and Emirbey and Şahin varieties were used as material. The research was conducted at Selçuk University Prof. Dr. Abdülkadir AKCİN Research and Application Station in the trial fields during the 2020-21 and 2021-22 plant growth periods without irrigation. The trials were established in both years according to randomized block design with 3 replications. Meteorological data indicated that despite variations in the lowest temperatures between the two years, all pea lines remained undamaged. This highlighted the adaptability of forage pea lines to the region's winter conditions, which is consistent with previous studies. Statistically significant differences were determined between the two years of the study in terms of all traits analyzed in the research. Higher values were recorded in the second year for all traits. The main reason for these differences is the precipitation and temperatures in the spring months, which is the period when the plants grow actively. Again, significant statistical differences were determined between the lines in all the traits analyzed in the study. This shows us that genetic traits and environmental conditions are important in determining the traits analyzed in this study. The forage pea lines used in the study performed better than the standard varieties in terms of seed and biological yield. In conclusion, this research shows that newly developed winter forage pea lines can be successfully grown in the Konya region and these lines have important genetic and environmental effects on various yield parameters.
Investigation of the Usability of Biodiesel Produced from Coriander (Coriandrum Sativum L.) Gürbüz Registered Variety Crude Oil in Diesel Engines
Authors: Şahin Seda , COŞGE ŞENKAL Belgin , Eryılmaz Tanzer , Uskutoğlu Tansu
Published: January 2024

In recent years, the use of biodiesel has become increasingly important. One of the potential plants that can be used in biodiesel production is coriander (Coriandrum sativum L.). Coriander (Coriandrum sativum L.), a member of the Apiaceae family, is a medicinal, spice and essential oil plant. Although the homeland of coriander is the Mediterranean countries and the Middle East region, it grows naturally in Anatolia. In this study, coriander crude oil was obtained from coriander (Coriandrum sativum L.) (Gürbüz registered variety) seeds using a screw press. Biodiesel production was obtained from coriander crude oil by transesterification method in a single stage (CGBD). Fuel properties of coriander (Gürbüz registered variety) (CGBD); density (kg m-3) (at 15 oC), kinematic viscosity (mm2 s-1) (at 40 ºC), flash point (oC), water content (mg kg-1), copper strip corrosion (3h at 50 oC), calorific value (MJ kg-1), color (ASTM D1500), cloud point (oC), cold filter plugging point (oC), pour point (oC). The conformity of coriander biodiesel according to EN 14214 standard was examined.
Effects of Supplementation Black Soldier Fly Larvae (Hermetia illucens L.) to The Diets of Breeder Japanese Quails on Performance, Egg Quality, and Incubation Parameters
Authors: KAPLAN Ahmet , Göçmen Rabia
Published: January 2024

This study was performed to assess the effect of different levels of addition (0, 4, and 8%) of dried and ground Black Soldier Fly Larvae (Hermetia illucens L.) to breeder Japanese quail (Coturnix coturnix japonica) diets on performance, egg quality and incubation parameters. In the experiment, 72 breeder Japanese quails (18 males, 54 females) at 8 weeks of age were randomly distributed into 3 treatment groups with 6 replications, each with 3 females and 1 male quail. Treatment groups were fed with diets supplemented with different levels of black soldier fly larvae (BSF) for 8 weeks.Feed intake was significantly higher in the control group than in the other treatment groups, and there were no significant differences between the groups in feed conversion ratio, egg production, egg weight, and egg mass. Similarly, no significant differences were observed among the groups in terms of egg quality parameters such as eggshell thickness, eggyolk index, eggshell breaking strength, and eggshell weight parameters. However, the shape index was significantly higher in the BSF 4% group than the control group. Albumen index was highest in the control group. While there was no significant difference among the groups in terms of egg yolk L* value, as the amount of BSF in the diet increased, there was a significant increase in the a* and b* values. Incubation parameters were not affected by the treatments. According to the results of the experiment, it was concluded that the addition of 4% and 8% BSF to breeder Japanese quail diets can be used at 8% level without any negative effects on performance, egg quality, or incubation parameters.
Effect of Organo Mineral Fertilization on Weed Infestation and Dynamic in Upland Rice Growth in the Southern Sudanian Zone of Burkina Faso
Authors: SANOU ADAMA , YONLI Djibril , Ali Kiendrebéogo , SERE Issiaka , Traoré Hamidou
Published: January 2024

Weeds are a major biotic constraint in rice production, causing crop yield losses. Fertilization system may be an effective control of weeds. This study aims to improve rice productivity through soil amendment and weed management in Burkina Faso.
Method. The trial was set up in a Fisher block design with 4 replications and 10 fertilizer treatments. The effect of the fertilization was assessed on weeds at 45 days after planting through their abundance and dry biomass, and on rice through plant height and grain yield. weeds diversity at 65 days old has an average Shannon index of 2.9 bits. Three (03) weed clusters and their indicator species that are associated with the treatments studied were identified at 65 days after sowing. The Cyperus esculentus L. weed grouping was found to be associated with the organo-mineral fertilizer treatments. The application of poultry manure plus urea obtained simultaneously the lowest weed infestation rate (6.37 g/m²) and the highest grain yield (1.6 t/ha). Thus, to improve the productivity of upland rice, integrated weed management could be a combination of poultry manure treatments combined with mineral fertilization and specific control methods for the main species of the Cyperus esculentus L. group.
A Perspective Review of Cancer Therapy (Part II): Adoptive Cell Transfer, Metabolic Therapy, and Artificial Intelligence
Authors: Pajuelo Alberto
Published: January 2024

In recent years, there has been significant advancement in cancer therapy, with the emergence of novel and inventive methods that provide hope to patients. An advanced approach is adoptive cell transfer, which utilizes the immune system’s potential by modifying T cells to identify and eliminate cancer cells. The implementation of this individualized method has demonstrated encouraging effects across different cancer types, resulting in enhanced prognoses for numerous individuals. Metabolic therapy has emerged as a possible treatment technique, alongside adoptive cell transfer. This therapeutic method seeks to interrupt the growth and survival of cancer cells by specifically targeting their abnormal metabolism. Moreover, artificial intelligence (AI) is transforming cancer care by assisting in the identification of diseases, forecasting the likely course of illness, and devising treatment strategies. Artificial intelligence algorithms employ extensive data analysis to identify patterns and anomalies that may not be readily apparent to human specialists in isolation. Oncologists can enhance patient outcomes and reduce unwanted effects by integrating adoptive cell transfer, metabolic therapy, and AI technologies to provide personalized treatments.
Issues with the Development of Professional Preschool Teaching Staff in China and Developmental Strategies
Authors: Zhou Xuan
Published: January 2024

Teaching in preschool institutions is a specialized profession that requires professional expertise and techniques. Currently, certain issues with the professionalization of early childhood education practitioners have negatively impacted the quality of Chinese preschool education. This article analyzed the necessity of professionalizing pre-primary teachers and pinpointed the challenges faced by China’s educational community in building professional preschool education staff. Relevant strategies were also proposed for strengthening China’s pre-primary teaching force.
Break Time on the School Schedule: Evidence from Basic Education Schools in China
Authors: Xu Xinyuan
Published: January 2024

The mandatory 10-minute break on the basic education school schedule in China is intended to help students relieve fatigue and pressure and refresh their minds and bodies between lessons. However, instructional activities have often taken precedence over its intended purpose. This article described the current state of break time deprivation among Chinese basic education students and analyzed its causes, with a view to arousing more attention to the protection of the right of the student to rest and leisure activities at school.
Political Rights of Ex-Corruption Convicts in Elections
Authors: Fitrazia Zerelda Azzahra , Ihsan A. Bakir , Iqbal Bilal
Published: January 2024

Abstract. This research aims to determine the birth process, the dynamics of the formulation, and the impact of the licensing policy for ex-corruption convicts to participate in elections. By using qualitative research methods and public policy theory, political elites, and corruption, this study found that the licensing policy for ex-corruption convicts in elections is a political process on the basis of providing opportunities for ex-corruption convicts as part of human rights which is then set forth in Law Number 7 of 2017 as a legal decree. Therefore, General Election Commission Regulation (PKPU) Number 20 of 2018 which prohibits ex-corruption convicts from becoming election participants is in itself considered deviant. This policy reaped a lot of controversy and rejection from society, but on the pretext of providing opportunities and fulfilling human rights, the political process came to a decision to be legalized through law. As a result, in the midst of public knowledge about the limited track record of politicians and the attitude of the people towards non-corruption which tends to be permissive, legislative candidates with backgrounds of corruption convicts have emerged and some have been elected in political contests at both the local and national levels. Keywords: Political rights, Ex-Corruption Convicts, Elections, Public Policy, Political Elite. Abstrak. Penelitian ini bertujuan untuk mengetahui proses lahir, dinamika perumusan, dan dampak kebijakan perizinan mantan narapidana korupsi ikut serta dalam pemilu. Dengan menggunakan metode penelitian kualitatif dan teori kebijakan publik, elite politik, dan korupsi, penelitian ini menemukan bahwa kebijakan perizinan mantan narapidana korupsi dalam pemilu merupakan proses politik atas dasar pemberian kesempatan mantan narapidana korupsi sebagai bagian dari hak asasi manusia yang kemudian dituangkan dalam UU No. 7 Tahun 2017. Oleh sebab itu, Peraturan KPU (PKPU) Nomor 20 Tahun 2018 yang melarang mantan narapidana korupsi menjadi peserta pemilu dengan sendirinya dianggap menyimpang. Kebijakan ini menuai banyak kotroversi dan penolakan dari masyarakat, namun atas dalih pemberian kesempatan dan pemenuhan HAM, maka proses politik sampai pada keputusan untuk dilegalisasi melalui undang-undang. Dampaknya, di tengah pengetahuan masyarakat tentang track record politisi yang terbatas dan sikap masyarakat terhadap tindak korupsi yang cenderung permisif, maka bermunculan calon-calon legislatif berlatar belakang narapidana korupsi dan sebagian terpilih dalam kontestasi politik baik pada tingkat lokal maupun nasional. Kata Kunci: Hak politik, Mantan Narapidana Korupsi, Pemilu, Kebijakan Publik, Elite Politik.
Melawan Konstruksi Sosial dan Budaya Terhadap Perempuan: Mewujudkan Keadilan Gender dalam Rumah Tangga
Authors: Yulianti Yulianti , Syahriyah Ummi Ulfatus
Published: January 2024

Abstract. There is a social and cultural construct in society that put a mother as the most responsible person for childcare. In fact, childcare is basically a shared responsibility between husband and wife.  Although mothers are the first school for their children, fathers also have a great responsibility in childcare.  Not only given great responsibility in childcare, social and cultural constructions in Indonesia form that a wife or mother must be able to do housework and the husband is responsible for providing a living. The purpose of this study, researchers want to see how a mother eliminates the constructions that develop in society in realizing gender justice and equality in the household. The research method in this study is a descriptive qualitative method because it is to discuss the research results comprehensively. Data collection in this study used interviews with two young mothers.  The results in this study show that in realizing gender justice in the household, each couple must prepare for marriage in terms of science and mentality so that each other understands each other regarding their respective roles and responsibilities. responsible for childcare and domestic work. And the establishment of a culture of communication in carrying out the division of roles in order to the emergence of justice in the household. Keywords: Construction, Women, Gender Justice. Abstrak. Ada konstruksi sosial dan budaya di masyarakat yang beranggapan seorang ibu adalah orang paling bertanggung jawab dalam pengasuhan anak. Padahal, pada dasarnya pengasuhan anak adalah tanggung jawab bersama antara suami dan istri.  Meskipun ibu adalah sekolah pertama bagi anak-anaknya, ayah juga memiliki tanggung jawab besar dalam pengasuhan anak.  Kemudian, ibu tidak hanya diberikan tanggung jawab besar dalam pengasuhan anak, konstruksi sosial dan budaya di Indonesia juga meletakkan seorang istri atau ibu dalam pekerjaan rumah tangga dan suami bertanggung jawab untuk mencari nafkah. Penelitian ini bertujuan melihat bagaimana seorang ibu menghilangkan konstruksi yang berkembang di masyarakat dalam mewujudkan keadilan gender dan kesetaraan dalam rumah tangga. Penelitian ini menggunakan metode kualitatif deskriptif karena membahas hasil penelitian secara komprehensif. Pengumpulan data dilakukan dengan wawancara dengan dua ibu muda. Hasilnya menunjukkan bahwa dalam mewujudkan keadilan gender dalam rumah tangga, setiap pasangan harus mempersiapkan pernikahan dari segi ilmu pengetahuan dan mental agar saling memahami peran dan tanggung jawabnya masing-masing. Bertanggung jawab atas pengasuhan anak dan pekerjaan rumah tangga. Dan terbentuknya budaya komunikasi dalam melaksanakan pembagian peran demi munculnya keadilan dalam rumah tangga. Kata Kunci: Konstruksi, Perempuan, Keadilan Gender.
Optimizing Nutrition in Neonates with Kidney Dysfunction
Authors: Nesargi Saudamini , Steflik Heidi , Kamath Nivedita , Selewski David , Gist Katja M. , Menon Shina
Published: January 2024

The nutritional management of neonates with kidney disease is complex. There may be significant differences in nutritional needs based on the duration and cause of kidney dysfunction, including acute kidney injury (AKI) and chronic kidney disease (CKD). Furthermore, the treatment modality, including acute (continuous renal replacement therapy and peritoneal dialysis [PD]) and chronic (intermittent hemodialysis and PD) approaches may differentially affect nutritional losses and dietary needs. In this review, we discuss the pathophysiology of compromised nutrition in neonates with AKI and CKD. We also summarize the existing data and consensus recommendations on the provision of nutrition to neonates with AKI and CKD. We highlight the paucity of data on micronutrient losses and the need for future prospective studies to enhance nutritional supplementation to hopefully improve outcomes in these patients.
Cushing Syndrome in Childhood
Authors: Parish Anthony , Cheung Clement , Ryabets-Lienhard Anna , Zamiara Paul , Kim Mimi S.
Published: January 2024

We describe a 15-year-old boy who presented with low back pain due to vertebral compression fractures, growth deceleration, excessive weight gain, rounded facies, dorsocervical fat pad, and hypertension. He was diagnosed as having Cushing syndrome (CS) due to primary pigmented nodular adrenocortical disease resulting in excess cortisol produced by the adrenal glands, leading to disruption of the hypothalamic-pituitary-adrenal axis. The most common cause of CS is exogenous glucocorticoids, with endogenous causes being extremely rare, often leading to delay in diagnosis or misdiagnosis. Herein, we review clinical presentation, screening for hypercortisolism, and decision-making in the diagnosis of CS, as well as therapeutic approaches. The wide range of clinical presentations in pediatric CS and the rarity of the condition can lead to difficulty in the recognition, diagnosis, and subsequent management of these patients. CS can be difficult to differentiate from more common exogenous obesity, and outpatient screening of cortisol excess is challenging. Early recognition and treatment of CS is necessary to avoid multisystemic complications, and patients with suspected endogenous CS should be referred to a tertiary care center with experienced pediatric endocrinology and surgery specialists. Further confirmatory diagnostic tests are necessary to distinguish corticotropin-independent from corticotropin-dependent forms of CS, including a high-dose dexamethasone suppression test, a corticotropin-releasing hormone stimulation test, and imaging. There can be challenges to the evaluation of CS, including complex inpatient testing and difficulty with localization on imaging. Long-term sequelae of CS, including adrenal insufficiency, obesity, hypertension, and mental health disorders, may remain despite definitive surgical treatment, meriting close follow-up with the primary care clinician and subspecialists.
Life satisfaction and problem-focused coping among future physical culture teachers
Authors: Kholodny Oleksandr , Prystynskyi Volodymyr , Biryukov Anton , Prusik Katarzyna
Published: January 2024

Background and Study Aim. Behavior adjustment, as an individual's response to threats, is an effective means of managing stress. Therefore, the aim of this study is to explore the correlation between life satisfaction and problem-focused coping strategies among future physical culture teachers.

Materials and Methods. The study involved students (n=72, aged 18-21 years). The research was conducted during the 2022-2023 academic year in an online format. The following instruments were used: "Life Satisfaction Scale," "Coping Test," and "Coping Strategy Indicator." Pearson's correlation coefficient was employed to determine the relationships between variables.

Results. The results indicate a moderate to low level of life satisfaction among the students. The adaptability of students' behavior was assessed based on the expression level of coping strategies (M±σ): problem-solving (23.5±6.8), seeking social support (26.7±7.5), and avoidance of problems (22.1±6.4). The findings suggest both positive and negative correlations between core coping strategies and life satisfaction among students.

Conclusions. The findings of this research can contribute to the existing knowledge on the role of coping strategies in enhancing life satisfaction among physical culture teachers. By identifying effective coping mechanisms, educational institutions and professionals in the field can develop targeted interventions and support systems to promote the well-being and resilience of future teachers.
Modeling the gameplay actions of elite volleyball players and teams based on statistical match reports
Authors: Iermakov Sergii , Yermakova Tetiana , Prusik Krzysztof
Published: January 2024

Background and Study Aim. In modern sports analysis statistical modeling of gameplay actions based on match data is becoming a key tool for optimizing training processes and tactical preparation. The aim of the research is to create models of volleyball players' actions based on statistical reports of the 2022 World Championship matches.

Materials and methods. The study used statistical data on the World Volleyball Championship matches among men. The data was extracted from open internet sources and converted into tables in CSV format. These tables were processed in the PyCharm programming environment using Python code. The pandas library was used for data analysis and statistical operations, and 'scikit-learn' for machine learning.

Results. Models are presented that best predict the results for teams and volleyball players. Important features for teams have been identified, indicating the successful execution of game elements for the team. The regression equations for the team represent a linear combination of various gameplay metrics that affect the total number of points the team scores in a match. They also emphasize the importance of action elements. Linear regression equations predict the total number of points a volleyball player scores based on various statistical indicators.

Conclusions. It is recommended to use statistical modeling to optimize training and tactical strategies based on key gameplay metrics. Linear regression equations can assist in evaluating the effectiveness of a player and team. Regular data updates will ensure the relevance of models for better match preparation. Consideration should be given to the possibilities of implementing analytical tools based on the developed models into training programs to optimize the team's preparation for future matches.
Motivation for physical activity among university students residing in areas of military conflict in Ukraine
Authors: Yermakova Tetiana , Lutskyi Vasyl , Piatnytska Daria
Published: January 2024

Background and Study Aim.
Military conflicts significantly stress students in affected areas, impacting their physical well-being and motivational factors. This study aims to assess motivation levels for physical activity among university students in conflict-impacted regions of Ukraine.
Materials and Methods.
The study involved 196 students from three Ukrainian universities, two in the eastern region (Kharkiv - included in the list of territories of active military operations) and one in the western part (Ivano-Frankivsk - a territory that is under constant threat of shelling). A short-form 'Physical Activity Questionnaire' (PAQ) with seven Likert scale questions was used. Statistical analysis was performed using PyCharm CE and Python libraries. Metrics like mean, standard deviation, and Cronbach's alpha coefficient for reliability were calculated. Bartlett's test of sphericity and Principal Axis Factoring were employed, with a statistical significance threshold set at p<0.05.
Results.
The questionnaire's reliability was confirmed with a Cronbach's alpha coefficient of 0.872. Bartlett's test of sphericity indicated suitable data for factor analysis, with a Chi-Square value of 641.808 and a p-value < 0.05, affirming good construct validity. University students from the Eastern part of Ukraine show average motivation levels for physical activity of 25.0 and 27.193, respectively. University students from the Western part of Ukraine have the highest average motivation level at 29.234. This indicates stronger motivation for physical activity in the Western region. Additionally, male students showed higher average motivation scores than females.
Conclusions.
Students living in different regions of Ukraine have varying motivations for physical activity in the context of the military conflict. Students from the western part of Ukraine (an area subjected to periodic military shelling) show a higher interest in engaging in physical activities compared to students from the eastern part (a zone of active military operations).
Tensile/Compressive Response of 316L Stainless Steel Fabricated by Additive Manufacturing
Authors: Barrionuevo Germán Omar , La Fé-Perdomo Iván , Cáceres-Brito Esteban , Navas-Pinto Wilson
Published: January 2024

Additive manufacturing has evolved from a rapid prototyping technology to a technology with the ability to produce highly complex parts with superior mechanical properties than those obtained conventionally. The processing of metallic powders by means of a laser makes it possible to process any type of alloy and even metal matrix composites. The present work analyzes the tensile and compressive response of 316L stainless steel processed by laser-based powder bed fusion. The resulting microstructure was evaluated by optical microscopy. Regarding the mechanical properties, the yield strength, ultimate tensile strength, percentage of elongation before breakage, compressive strength and microhardness were determined. The results show that the microstructure is constituted by stacked micro molten pools, within which cellular sub-grains are formed due to the high thermal gradient and solidification rate. The compressive strength (1511.88 ± 9.22 MPa) is higher than the tensile strength (634.80 ± 11.62 MPa). This difference is mainly associated with strain hardening and the presence of residual stresses. The initial microhardness was 206.24 ± 11.96 HV; after the compression test, the hardness increased by 23%.
Prediction of abrasive wear and surface hardness of printed parts by SLA technology
Authors: Muñoz-Valverde P. , Villena-López O. , Mayorga-Ases L. , Pérez-Salinas CristianUnviersidad Técnica de AmbatoC. , Moya D.
Published: January 2024

In the present study, a prediction of hardness deterioration and abrasive wear was performed through a neural network using artificial intelligence on a material printed in SLA. This article aims to predict the mechanical properties, wear resistance and surface hardness of parts manufactured by SLA stereolithography printing. A full factorial DOE was used to associate the peculiar parameters (print orientation, cure time, layer height) to perform experiments. The mechanical properties were evaluated according to ASTM regulations, with the objective of obtaining feeding data and validation of the predictions of the Taber Wear Index and hardness using an artificial neural network. The experimental results are in good agreement with the measured data with satisfactory prediction errors with a mean square error (MSE) of 0.01 corresponding to abrasive wear using the clear resin and a mean absolute error (MSE) of 0.09 with an R2 of 0.756, the prediction with the neural network with a mean square error (MSE) of 2.47 corresponding to abrasive wear using the tough resin and a mean absolute error (MSE) of 14.3 with an R2 of 0.97. It was shown that the accuracy of the prediction is reasonable, and the network has the potential to be improved if the experimental database for training the network could be expanded. Therefore, wear and hardness mechanical properties can be predicted appropriately with an ANN.
Clasificación de elementos importantes en sistemas eléctricos de potencia según medidas de centralidad en redes y transformación linegraph
Authors: Moronta R. José A. , Rocco S. Claudio M.
Published: January 2024

El análisis de sistemas eléctricos de potencia se ha apoyado, recientemente, en la aplicación de técnicas de la teoría de redes, con la finalidad de obtener soluciones computacionalmente más rápidas. A partir de la información topológica de una red, es posible definir características desde lo local (elementos de la red) hasta lo global (comportamiento e interacción de los elementos). La identificación de elementos importantes de un sistema eléctrico, consiste en clasificar cada uno de los elementos desde su interacción con toda la red, y, posiblemente, tomando en cuenta diversas condiciones de operación del sistema. Las medidas de centralidad en redes, que permiten asignar importancia cuantitativa a los elementos de un sistema, están definidas en su mayoría para los nodos (representan buses de conexión) de las mismas. En este trabajo, a partir de la transformación de enlaces a nodos, según la técnica linegraph, se calculan y clasifican los enlaces (representan líneas y transformadores) de diversas redes eléctricas de la literatura, de acuerdo con tres medidas de centralidad. Adicionalmente, el procedimiento presentado permite agregar o combinar los índices de cada medida, y obtener una única clasificación según su importancia para los enlaces de los sistemas eléctricos de potencia considerados. La diversidad de redes analizadas permite concluir que la distribución empírica de los índices de centralidad es similar, y origina una clasificación de elementos importantes semejantes, independiente de la dimensión de la red.
Reutilización de baterías de vehículos eléctricos para aplicaciones de segunda vida en sistemas eléctricos de potencia con una alta penetración de energía renovable: una revisión sistemática de la literatura
Authors: Campoverde-Pillco Jorge , Ochoa-Correa Danny , Villa-Ávila Edisson , Astudillo-Salinas Patricio
Published: January 2024

Este artículo presenta una revisión sistemática de literatura relativa al tópico reutilización de baterías de vehículos eléctricos (BVE) para aplicaciones de segunda vida en sistemas eléctricos de potencia. El fin del ciclo de vida de estas baterías representa un gran problema ambiental debido a su composición y materiales. El estudio tiene por objeto analizar la reutilización de las BVE como una alternativa sostenible para el medioambiente y, además, para brindar servicios complementarios que faciliten la incorporación de generación renovable no convencional de carácter intermitente a la red eléctrica. A través de una búsqueda exhaustiva de publicaciones científicas indexadas en catálogos digitales prestigiosos y de su posterior tratamiento sistemático, se ha llegado a un número selecto de 49 artículos científicos publicados entre 2018 y 2023. En ellos ha sido posible identificar las diferentes oportunidades, beneficios y limitaciones de los sistemas de almacenamiento de energía de segunda vida orientadas a impulsar una economía circular. El estudio concluye que, si bien la reutilización de baterías no está plenamente tratada ni implementada, debido a que aún enfrenta desafíos en términos de tecnología, costos y regulaciones, es de gran importancia profundizar su análisis para mejorar la eficiencia y disminuir los impactos ambientales que provocan su fabricación, uso y desecho.
Propuesta de mejora en el sistema estructural de un cuadro rígido de bicicleta de montaña de 15” R29, mediante FEA y optimización geométrica
Authors: Guamán Juan P. , Crespo Hugo E. , Paltán César A. , Fajardo Jorge I.
Published: January 2024

En la actualidad la práctica del ciclismo ha tenido un incremento considerable, así como el uso de bicicletas de montaña (Mountain Bike, MTB, en inglés), de cuadro rígido, utilizadas como medio de transporte y para competencia, debido a su costo asequible. Este tipo de bicicletas, al ser utilizadas para varios propósitos, presentan esfuerzos variados en su cuadro, que conllevan a sobrepasar las exigencias de diseño, presentándose fallos en las vainas superiores. Este tipo de fallo es analizado en este estudio, motivo por el cual se levanta la información referente al material del cuadro, cargas actuantes y modelado 3D. Posterior se genera un análisis de homologación del fallo y se determina una propuesta de mejora aplicando optimización geométrica, donde se determina un espesor de 3,50 mm en las vainas superiores, garantizando la resistencia del cuadro de bicicleta bajo las condiciones de estudio; es decir, un drop de 60 cm y carga de 74 kg, con la cual se garantiza que el esfuerzo en las vainas superiores no sobrepase el esfuerzo último del material de 890,94 MPa.
Incidencia del aire acondicionado automotriz en el índice de consumo de combustible en vehículo de encendido provocado en una ruta de la Amazonía ecuatoriana
Authors: Llanes Cedeño Edilberto Antonio , Grefa Shiguango Shayan Fredy , Molina-Osejos Jaime Vinicio , Rocha-Hoyos Juan Carlos
Published: January 2024

En los últimos años, el ambiente se ha visto afectado a causa de la contaminación producida por los vehículos. El presente proyecto de investigación tuvo como objetivo determinar la incidencia del aire acondicionado (A/C) en el índice de consumo de combustible vehicular en el cantón Shushufindi, por medio de pruebas reales de tráfico, modo de conducción eficiente y empleo de gasolina extra y súper, para la selección de la mejor alternativa. El estudio se realizó en una ruta de mayor flujo de vehículos, especialmente en la hora normal (9 a. m.) y pico (5 p. m.) que comprende 16.17 km, para ello se utilizó el combustible Extra (85 octanos) y Súper (92 octanos). La toma de datos se ejecutó mediante un sistema OBD2 ELM 327. Los resultados obtenidos en la caracterización del ciclo mixto representativo de 9 a. m. se obtuvo una velocidad máxima de 81 km/h y una velocidad media de 39 km/h en un tiempo de recorrido de 1446 s; mientras que el ciclo mixto de 5 p. m. la velocidad máxima es de 70 km/h y una velocidad media de 37 km/h con un tiempo de recorrido de 1632 s. El menor índice de consumo de combustible se evidenció en el horario normal, sin A/C y combustible extra (T3) siendo sus valores entre 0.0584 – 0.060 (L/km), y en el horario normal, sin A/C y combustible súper (T7) que se encuentran entre 0.0561-0.0585 (L/km).