bluuebunny/crossref_metadata_2025 huggingface dataset:
Optimization of Squeeze Casting Process Parameters on AA8011 Based Hmmcs Under NaCl Environment
Authors: Kumar S. Senthil , Karthikeyan G. , Selvam K. Panneer
Published: September 2024

The present research computes the impact of process parameters of squeeze casting on AA8011/Si3N4/ZrO2 Hybrid Metal Matrix Composites (HMMCs). The melting temperatures (700 to 800°C), Si3N4 + ZrO2 (5 to 15 wt.%) and stirring speed (550 to 750 rpm) were selected as parameters for input. The AA8011 HMMCs were fabricated as per the combination of L9 input parameters, and they were subjected to Energy Dispersive X Ray Analysis (EDAX) and Scanning Electron Microscope (SEM) tests to compute the presence of wt.% of matrix and reinforcements and to confirm the uniform distribution of Si3N4 + ZrO2 in matrix AA8011. Besides, fabricated composites were subjected to tensile and micro hardness test after subjecting to Salt spray test (3.5% NaCl, 120 hours exposing duration and 1.2 kg/cm2 spray pressure) for computing the Ultimate Tensile Strength (UTS) and micro hardness. The Grey Relational Analysis (GRA) was employed for optimizing process parameters of squeeze casting on AA8011 based composites. The EDAX test results confirms that the increasing wt.% of silicon nitride and zirconium dioxide reinforcements enhances the presence of elements such as Si, N, Zr and O in manufactured composites. The higher dense reinforcements are uniformly distributed in the matrix AA8011 at the blend of input parameters of AA8011 composite. Based on the Taguchi approach, the medium level of melting temperature (750°C), higher level of wt.% of Si3N4 and ZrO2 reinforcements (15 wt.%) and higher level for speed of stirring (750 rpm) is the optimized combination parameters of squeeze casting for UTS and microhardness are identified. Based on the GRA technique, the influencing sequence are identified for squeeze casting process parameters are wt.% of Si3N4 + ZrO2 reinforcements, stirring speed and melting temperature for both UTS and Micro hardness. The contribution percentage of melting temperature, wt.% of reinforcements and stirring speed are 20.26%, 48.102% and 29.23% respectively. The confirmation test was done for optimized input parameters and it exhibit 56% higher UTS and 48.2% higher micro hardness of than AA8011 matrix material.
Stabilization of Lateritic Soil using Fly Ash Based Geopolymer
Authors: Ahmad M.M. , Razak R.A. , Al Bakri Abdullah M.M. , Muhamad K. , Mydin A.O. , Sandu A.V.
Published: September 2024

Current development consists of a high-rise building and heavy traffic load demands for soil with good engineering properties. Lateritic soil is commonly treated with Ordinary Portland Cement (OPC) to improve its engineering properties in order to enhance its load bearing capacity. The production of OPC however emits a large amount of carbon dioxide (CO2) into the atmosphere. Geopolymer technology has been explored as an alternative replacement for the OPC. In this research, the unconfined compressive strength (UCS) of a lateritic soil treated with fly ash (FA) based geopolymer up to 40% by weight of the dry soil and activated using combination of sodium silicate (Na2SiO3) and sodium hydroxide (NaOH) was investigated by means of unconfined compression test (UCT). The effect of different molarity of NaOH (5-20 M), FA to alkali activator (AA) ratio (1-3) and different curing temperatures to the UCS of treated soil sample are being determined. In general, as the content of FA in the soil increases, the UCS increases more than 100% and almost 400% compared to the untreated soil for room curing temperature and oven curing temperature respectively. Based on the scanning electron microscopy (SEM) result, the molarity of NaOH solution reduces the pores in the treated soil sample. The geopolymerization process combines the soil particle and makes it denser, resulting in higher UCS than the untreated soil sample.
Effect of Fibre Mercerization on Strength Properties of Agave Cantula Roxb. Strengthen Foamed Concrete
Authors: Majeed S.S. , Mydin Md Azree O. , Omar R. , Razak R.A. , Al Bakri Abdullah M.M. , Ishak S.
Published: September 2024

Researchers are increasingly becoming fascinated by the possibilities of utilizing natural fibre, which is a byproduct of production processes, as an addition in concrete. This fibre exhibits a low density and is amenable to chemical changes. The primary aim of this research study is to examine the influence of agave cantula roxb. fibre (ACRF) in low-density foamed concrete (FC) after being subjected to different doses of alkali treatment using sodium hydroxide (NaOH). Various weight fractions of treated ACRF were employed in the FC mix, namely 0% (as the control), 1%, 2%, 3%, 4%, and 5%. FC with a density of 1060 kg/m3 was produced and subsequently tested. The three types of strength properties that have been evaluated and analysed included flexural, tensile, and compressive strengths. The findings from this study have revealed that the inclusion of 3% of treated ACRF in FC yields highly favourable results in relation to strength properties. The use of treated ACRF improves the FC’s strength characteristics, particularly its bending and tensile strength, by bridging microscopic cracks and filling up gaps. It is noteworthy to emphasize that accumulation and unequal dispersion of ACRF are possible if the weight fraction of ACRF applied above the optimal value of 3% which led to decrease in FC’s strength properties. This exploratory work will lead to a better understanding of the potential applications of treated ACRF in FC. It is critical to encourage the long-term development and implementation of FC products and technology.
Enhancing Mechanical and Flammability Properties of Rice Husk-Reinforced Recycled High-Density Polyethylene Composites through Chemical Treatment
Authors: Salleh M.N. , Aziz R.A. , Shan Chen R. , Musa L. , Juhardi N.N. , Ai Tan Mei , Razak M.F.S.A. , Chaowana P. , Jeż B.
Published: September 2024

This study investigated chemical treatment’s impact on mechanical and flammability properties of rice husk-reinforced recycled high-density polyethylene (r-HDPE) composites. Three treatments (maleate, alkali, acid) were applied to rice husk, and composites were tested for tensile strength, elongation at break, and modulus of elasticity. Results showed that tensile strength decreased with increasing rice husk content, except for composites treated with maleic anhydride grafted polyethylene (MAPE), which exhibited the highest strength at 10% filler content. Break elongation generally decreased with increased rice husk content, while the modulus of elasticity improved with higher rice husk content, except for acid-treated composites. Scanning electron microscopy revealed better interfacial bonding in composites with lower rice husk loading. Maleate treatment enhanced flame resistance. In conclusion, chemical treatment has the potential to enhance the properties of rice husk-reinforced r-HDPE composites for various applications.
Monitoring of Post-Mining Subsidence using Airborne and Terrestrial Laser Scanning Approach
Authors: Blachowski Jan , Wajs Jarosław , Walerysiak Natalia , Becker Miłosz
Published: September 2024

Discontinuous deformations, such as sinkholes, pose significant challenges in post-mining areas due to their unpredictable nature and potential hazard to surface development and the safety of local communities. Therefore, monitoring the post-mining regions should be treated as a continuing task. This study addresses the ongoing problem of sinkhole formation in the former “Przyjaźń Narodów – Szyb Babina” (Babina) lignite mine located in the glaciotectonic region of Muskau Arch in western Poland. The research uses airborne and terrestrial laser scanning methods to identify and monitor discontinuous deformations, focusing on a newly discovered sinkhole. The methodology involves differential analysis of Digital Elevation Models (DEMs) and their derivatives obtained from airborne laser scanning (ALS) and periodic terrestrial laser scanning (TLS) measurements. The results of ALS DEM analysis allowed the successful identification of 75 confirmed sinkholes, the largest measuring 12.8 m in diameter and 4.8 m deep. Whereas, differential DEM analysis indicated new sinkholes that developed between 2011 and 2020 in the area of shallow underground mining. Two-year TLS monitoring of the new sinkhole showed no progression in its dimensions. However, localised erosion processes associated with water transport were detected. The study shows that sinkhole formation processes are active 5 decades after the end of mining and highlights the importance of continuous monitoring of post-mining areas with advanced laser scanning methodss.
Comparative Analysis of Phytochemical Composition and Biological Activities of Sprouted and Unsprouted Chenopodium quinoa Willd. Seeds: Insights Into Nutritional Value and Functional Properties
Authors: Chouikh Atef , Ben Ali Anis , Bousbia Brahim Aida , Khezzani Khaoula , Bekkouche Saadia
Published: September 2024

Our study explored the phytochemical composition and biological properties of sprouted and unsprouted quinoa seed extracts (red, black, and yellow varieties). We observed distinct differences in primary metabolites between sprouted and unsprouted seeds, particularly in carbohydrates, fats, and proteins. Sprouted seeds exhibited increased levels of simple soluble sugars, amino acids, and fatty acids. Additionally, sprouted seeds showed higher quantities of polyphenols and flavonoids, with the black variety displaying the most. However, antioxidant activity did not directly correlate with phenol and flavonoid content, with unsprouted seeds demonstrating superior performance. Conversely, unsprouted seed extracts displayed greater anti-inflammatory efficacy, attributed to saponin loss during germination. Specifically, the best carbohydrate value was found in sprouted red seeds at 21.55±1.07 mg/g of plant material, the highest protein content was in sprouted red seeds at 4.6±0.28 mg/g, and the best lipid content was in sprouted black seeds at 2.97±0.13 mg/g. The highest polyphenol content was in sprouted black seeds at 10.74±0.6 mg E GA/g Ex, while the highest flavonoid content was also in sprouted black seeds. The most effective antioxidant activity in the DPPH test was observed in non-sprouted black seeds with an IC50 of 0.06±0.01 mg/ml. The highest hemolysis inhibition was found in sprouted red seeds at 49.04% at 0.8 mg/ml, and the greatest anti-inflammatory activity was in non-sprouted yellow seeds at 1.6±0.07 mg E Dc/mg Ex.
Effect of Blanching Methods and Probiotic Bacteria on the Bioactive Compounds and Physicochemical Parameters of Fermented Brown Agaricus bisporus and Imleria badia Mushrooms
Authors: Venugopal Kavya , Bernaś Emilia
Published: September 2024

The brown A. bisporus - a cultivated species and I. badia – a wild species of mushroom containing health-promoting properties has been selected to create functional foods. Therefore, the study analyzed the effect of the blanching method, fermentation temperature and addition of probiotic bacteria on the course of lactic fermentation and changes in mushrooms quality. The mushroom caps were blanched in water for 30 s and 2 min, followed by microwave-blanching for 2 min. To increase the effectiveness of fermentation and bioactivity of the product a starter culture of Lactobacillus acidophilus strain LA-5 (Hansen) was added to the brine. The mushrooms were fermented at 21°C and 26°C. In both the species fermentation concluded within 3 days with pH < 4.5. The blanching and the addition of probiotic bacteria significantly affected bioactive compounds, compared to fermentation temperature. Concerning the mushroom’s quality, blanching was necessary before fermentation. Products that were water-blanched for 2 min displayed increased dietary fiber and glucans content, while products from A. bisporus microwave-blanched gave organoleptic properties. The obtained products had significant amounts of B vitamins and phenols, proving that fermentation benefited the retention and enhancement of the nutritional quality of mushrooms. Fermented mushrooms can be used in nutraceuticals.
Exploring the Link between Sustainable Practices and Corporate Performance Across Industries
Authors: Osorio Iris Maria Velez
Published: September 2024

Background

The adoption of the Sustainable Development Goals (SDGs) has set a global standard for promoting sustainable practices. However, manufacturing companies need help in adopting these practices due to differences between industries, the need for research and development, and variations in corporate sizes.

Objectives

This analysis aims to study sustainability practices and their impact on corporate performance across different industries. It seeks to identify whether there is a relationship between sustainability practices and corporate performance in manufacturing companies and if the type of industry affects this relationship.

Methods/Approach

To achieve this goal, a multivariate analysis was conducted using hierarchical regression.

Results

The research indicates a direct connection between sustainability practices and corporate performance. It highlights the importance of creating distinctive sustainability practices that cater to the specific needs and characteristics of each industry.

Conclusions

Developing corporate strategies around sustainability is imperative. Additionally, public policies should be implemented to encourage the adoption of such practices, reinforcing the need for industry-specific approaches to enhance both sustainability and corporate performance.
A Tribute to Jan Kořenský
Authors: Uličný Oldřich
Published: September 2024

The article „A Tribute to Jan Kořenský“ by Oldřich Uličný nostalgically reflects on the academic and personal life of Jan Kořenský, a significant Czech linguist, and their studies at the then Pedagogical University in Olomouc. The author recalls his first meeting with Kořenský in 1955, their studies, and cultural activities, as well as notable professors and the scientific growth at the Institute of the Czech Language in Prague. The article also documents their shared period during a turbulent time in Czech history, including normalization and political pressures that influenced their lives. Uličný highlights Kořenský‘s contributions to Czech linguistics, especially in semantics, pragmatics, and communication theory of language, concluding that his legacy and influence are evident in the work and enthusiasm of many generations of students. This remembrance draws from personal experiences and reveals the impact that their shared historical and academic journey may have had on the Czech linguistic community.
Fabrication of transition metal-doped-ZnO photocatalyst and its photocatalytic degradation properties on formaldehyde
Authors: Liu Zhun , Xu Qijie , Shi Zelong , Ding Kexin , Chen Ziyi , Xu Zhangxu
Published: September 2024

Nano-ZnO/transition metal composites (NZTC) were prepared via sol-gel method where transition metal (Cu2+, Ag+, Co2+ and Ni2+) and ZnSO4 were used as the substrate. NZTC was characterized using scanning electronic microscope (SEM), ultraviolet-visible spectrophotometer (UV), fluorescence spectrophotometer (XRF), infrared spectrometer (IR), and so on. The photocatalytic degradation behaviors of nano-ZnO and NZTC for formaldehyde in gas and solution were investigated. The results indicated that nano-ZnO and NZTC could achieve the degradation of formaldehyde by photocatalytic process, and the degradation rates were up to 43.75% and 67.2% in gas and solution, respectively, thus thereby leading to good application prospects in the degradation of organic compounds.
Colorimetric detection of platinum (IV) ions based on triangular silver nanoprism particles in aqueous environmental sample
Authors: Ko Jeong Won , Park Se Hwan , Ko Weon Bae
Published: September 2024

Silver nitrate (AgNO3), trisodium citrate dihydrate (C6H5Na3O7 · 2H2O), sodium borohydride (NaBH4), and L-ascorbic acid (C6H8O6) were combined in distilled water to create a triangular silver nanoprism particle (AgNPRP) solution. UV-visible (UV-vis) spectroscopy at wavelengths of 350–460 nm and 580–700 nm was observed, and as a result of them, the successful formation of the triangular AgNPRPs was confirmed. The prepared silver nanoprism particles were characterized by X-ray diffraction(XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy(SEM), and transmission electron microscopy(TEM) and employed for the colorimetric detection of platinum(IV) ions in an aqueous solution containing Pt4+ ions. The color of the aqueous silver nanoprism particle solution, containing Pt4+ ions, changed from blue to light brown before turning colorless. Using UV-vis spectrophotometry, the detection limit of the Pt4+ ion concentration was determined to be 6.23 μM in an aqueous solution of silver nanoprism particles. The proposed method was applied for detecting Pt4+ ions in tap water samples.
Metástase de Melanoma Maligno na Uretra Peniana: Entidade Rara!
Authors: Magno Serrano Pedro , Oliveira Bárbara , Barros Pedro , Dores Marco , Coutinho Anibal
Published: September 2024

O melanoma do trato urogenital é raro, representando menos de 0,1% dos casos de melanoma. Atualmente, a literatura descreve apenas 220 casos de melanoma peniano, mais comumente localizado na glande. O principal desafio no melanoma peniano, além de determinar a origem cutânea ou mucosa, é a deteção precoce. A doença aparece como uma lesão indolor e pigmentada, de crescimento gradual e posterior ulceração.
Descrevemos o caso de um doente de 76 anos, que recorreu ao serviço de urgência por fleimão escrotal esquerdo, com uma lesão da uretra peniana suspeita associada a adenopatia inguinal esquerda móvel. Após confirmação do diagnóstico por biopsia excisional foi realizado o estadiamento, que confirmou doença metastática multiorgânica.
A abordagem destes doentes é multidisciplinar, sendo a Urologia, a Dermatologia e a Oncologia as especialidades responsáveis pela definição da melhor abordagem terapêutica, uma vez que a literatura é escassa relativamente ao melanoma mucoso genito-urinário.
O tratamento cirúrgico inclui procedimentos conservadores para doença localizada e cirurgia radical para casos localmente avançados.
Os casos de doença avançada podem envolver cirurgia citorredutora como ponte para quimioterapia adjuvante sistémica ou cuidados paliativos, muitas vezes no contexto de mitigação sintomática.
Interpretation and Application of Criminal Law Regarding Blasphemy Under Article 156a of the Criminal Code
Authors: Nainggolan Pandi Frenecius , Ikhsan Rd Muhammad , Albariansyah Hamonangan , Sinaga Jimmy Christiansen
Published: September 2024

The offense of blasphemy is complex and confusing due to its three distinct definitions: offense according to religion, offense against religion, and offense related to religion. This lack of clarity results in no clear boundaries for defining what constitutes blasphemy. This article explores the legal interpretation of blasphemy through an analysis of various court decisions and the opinions of religious leaders. Utilizing normative research methods complemented by field data from interviews with religious leaders, the study reveals that Article 156a of the Criminal Code lacks a precise definition of blasphemy, leading to broad and varied interpretations. The subjectivity of determining blasphemy is evident, as it often depends on the identity of the offended party. Additionally, resolving blasphemy cases, such as those involving deviant sects, necessitates theological dialogue rather than immediate recourse to punitive measures. The article notes that judicial decisions in blasphemy cases frequently rely on the testimony of religious experts, sometimes without sufficient consideration of the expert’s qualifications or the quality of their explanation of blasphemy.
Lean Implementation in Indonesian Small and Medium Enterprises: A Systematic Literature Review
Authors: Meilani Difana , Ab Samat Hasnida
Published: September 2024

Lean implementation focuses on reducing waste and improving efficiency in business operations, a strategy widely embraced in developed countries. However, its adoption among Indonesian SMEs is limited and lacks adequate research. Understanding how lean practices can effectively enhance competitiveness and productivity in this vital sector of the Indonesian economy is crucial. Despite its widespread use in Western countries, there's a noticeable gap in research specifically examining how lean principles are applied within SMEs, especially in developing countries like Indonesia. Furthermore, there's a clear scarcity of studies detailing the current state of lean implementation in Indonesia, particularly within SMEs. This study conducted a systematic literature review (SLR), thoroughly searching peer-reviewed journals and conference papers. We identified 441 articles related to lean practices in Indonesia, with 40 focusing specifically on SMEs. Through this review, we uncovered key themes and trends in lean implementation, offering valuable insights into current practices and highlighting areas for future research. This paper represents one of the first comprehensive SLRs exploring lean practices within Indonesian SMEs. It aims to deepen our understanding of how lean methodologies impact SME operations in Indonesia and provides practical guidance for researchers and practitioners interested in lean implementation. By bridging these research gaps, we hope to contribute to the body of knowledge on lean implementation in Indonesian SMEs, suggesting strategies for effective implementation and paving the way for further study in this important area.
Ergonomic Risk Assessment of Warehouse Workers in the Courier Service Industry: A Case Study from Kuantan, Malaysia
Authors: Binti Ismail Alya Nadhirah , Widia Mirta , Binti Sukadarin Ezrin Hani , Binti Mohd Nawi Wan Norlinda Roshana , Bin Zainal Abidin Mohammad Faizal
Published: September 2024

The global surge in demand for courier services has introduced both benefits and challenges. Courier workers face immense pressure to handle large volumes of orders, leading to increasing cases of health and occupational injuries. The lack of ergonomic interventions in their work highlights the urgent need for ergonomic assessments in the courier industry. In Malaysia, current ergonomic risk assessments for warehouse courier workers are insufficient, making it essential to identify prevalent musculoskeletal disorders (MSDs) and determine the associated risk factors and levels posed by their daily tasks. This study aimed to address this gap by conducting ergonomic risk assessments among 35 warehouse workers using the Cornell Musculoskeletal Discomfort Questionnaire (CMDQ), the Initial Ergonomic Risk Assessment (ERA) Checklist, and Rapid Entire Body Assessment (REBA). Three different work tasks were observed: scanning and sorting, tiered storage and stacking, and load unloading. The findings revealed that lower back pain was the most common ailment (14.5%), followed by hip pain (8.39%) and neck pain (7.89%). The tiered stacking storage activity posed the highest ergonomic risk, with identified risk factors including awkward postures, static and sustained activity, and repetitive tasks. The REBA analysis indicated a very high-level risk for tiered stacking storage, necessitating immediate ergonomic interventions. These findings contribute to the field of ergonomics and provide valuable insights for safety practitioners, ergonomists, researchers, and academicians in occupational safety and health and the courier service industries.
Systematic Review of Kansei Engineering Method Developments in the Design Field
Authors: Hakim Afif , Suhardi Bambang , Laksono Pringgo Widyo , Ushada Mirwan
Published: September 2024

Kansei engineering is a critical method for designing products that meet functionality, usability, and pleasurability, essential elements for business success. Despite its significance, there is limited understanding of how this method has evolved in recent years. This study aims to analyze the development of Kansei Engineering research from 2018 to 2022 using the Scopus database. The research methodology involved stages of identification, screening, filtering, and inclusion, resulting in 41 articles for detailed analysis out of an initial 215. The results indicate that 85% of Kansei Engineering research focuses on tangible products, with 83% categorized as type 1 studies, and 56% not integrating other methods. Additionally, 88% of the studies use only Kansei words, and 41% visualize design results as 3D images, with 95% not considering unique aspects. is dominance of tangible product design and the lack of integration with other methods suggest a need for diversification in research approaches. Furthermore, the high reliance on Kansei words and 3D visualizations points to a potential area for innovation and expansion in research techniques. This review highlights a significant research gap in Kansei Engineering studies, emphasizing the need for more diversified approaches. By identifying these gaps, the study provides a clear direction for future research, recommending that Kansei Engineering should explore beyond the predominant trends and consider integrating with other methods and unique aspects. This can enhance the method's application in industrial engineering and lead to more comprehensive and innovative product designs. Future research should aim to fill these gaps, ensuring that Kansei Engineering continues to evolve and contribute effectively to the field of product design and development.
Pengungkapan Kekerasan Seksual Melalui Ikon, Indeks, dan Simbol dalam Film Penyalin Cahaya
Authors: Pahlevi Mirza Kamal , Abidin Aslan , Ridwan Ridwan
Published: September 2024

Penelitian ini bertujuan menganalisis ikon, indeks, dan simbol yang muncul dalam film Penyalin Cahaya yang disutradarai Wregas Bhanuteja. Pengungkapan ikon, indeks, simbol, diharapkan lebih membantu memahami tanda-tanda yang muncul berupa bahasa verbal dan visual film Penyalin Cahaya. Adapun teori atau sudut pandang atau teori semiotika mengenai trikotomi ikon, indeks, dan simbol dari Charles Sanders Pierce. Hasil penelitian mengungkapkan bahwa ikon Teater Medusa dan mesin fotokopi, indeks fogging nyamuk dan tone hijau, serta simbol nama Suryani,  semua mengarah ke bentuk-bentuk pengungkapan mengenai kekerasan seksual. Film menjadi alat untuk menyadarkan masyarakat bahwa lembaga pendidikan tidaklah sepenuhnya aman bagi mahasiswa dan mahasiswi dalam menuntut ilmu pengetahuan.
Nephrology in Himachal Pradesh
Authors: Vikrant Sanjay , Jaryal Ajay
Published: September 2024

Nephrology in Himachal Pradesh began at the Indira Gandhi Medical College, Shimla, which, till recently, was the only tertiary care hospital providing nephrology services to the state. The first hemodialysis in the state was performed in 1977. The development of renal services has picked up in the last two decades. The National Pradhan Mantri National Dialysis Program has led to the expansion of dialysis services. Challenges include a need for a nephrology workforce. Active nephrology training programs and kidney transplants are needed to improve renal care and services. Further, renal registries in the state can improve the quality of the workforce and service delivery.
Factors Contributing to the Burden of Depression Amongst Patients Receiving Hemodialysis at Public and Private Dialysis Centres
Authors: Raghavan Ajay , Billa Varun , Billa Viswanath
Published: September 2024

Background

Chronic kidney disease poses significant morbidity on patients and subjects them to stressors in financial, occupational, and social aspects, making them vulnerable to mental health problems. We estimated the prevalence of depression in CKD patients undergoing maintenance hemodialysis (MHD) and evaluated the factors affecting it.

Materials and Methods

This cross-sectional survey included 282 patients from four Apex Kidney Care centers, Mumbai. Their mental health was assessed using PHQ-9 survey, a validated questionnaire for identifying depression. Categorical variables were compared using the Chi square test and continuous variables with the Mann Whitney U test. Logistic regression was used for multivariate analysis and odds ratios were calculated.

Results

Females constituted 36.52% of the study population. There was an equal distribution of patients from charitable centers (142 patients) and private centers (140 patients). The current analysis focused on those patients (n = 60) with significant depression i.e. a PHQ-9 score of 10 or greater, and these were compared to the rest of patients (n = 222). In logistic regression, female gender (p = 0.002), catheter as access (p = 0.025), stress of food restriction (p < 0.0001) showed statistically significant positive association, whereas being employed (p = 0.022) showed statistically significant negative association with depression. The distribution of patients with significant depression in both public (21.10%) and private (21.40%) centers was equal.

Conclusion

The prevalence of depression in MHD patients is substantial. Employment status, catheter access, and food restrictions are the modifiable factors influencing mental health. A focused approach on maximizing arterio-venous fistula creation, diet counseling, employment friendly shift adjustments, and mental health counseling can help mitigate this challenge.
Remote measurement of soil albedo along aircraft flight paths
Authors: Alieva A. J. , Ashrafov M. G. , Danilov Yu. G. , Melnikova A. A.
Published: September 2024

The redistribution of solar radiation in the geographical envelope plays an important climate-forming role. The radiation reflected by the Earth's surface (albedo) is a component of the Earth's radiation balance. The albedo of the Earth's surface depends primarily on the angle of incidence of sunlight, the color of the underlying surface, and its roughness relative to the incident rays. It also depends on the degree of specularity, so the water surface reflects the rays falling on it almost mirror-like, almost regardless of the presence of ripples or waves on it. The article examines the dependence of albedo, the surface of the soil not covered with vegetation, on these factors. Taking into account the known regression dependence of the albedo of the earth's soil surface on the roughness index or the standard deviation of the height of the measured points on the Earth's surface, the problem of achieving maximum information content of the measurements of the roughness of the Earth's surface is formulated and solved, and the optimal dependence of the zenith angle of the Sun on the time interval between two consecutive time points of roughness measurements is revealed. The influence of the zenith angle of the Sun on the conducted albedometric measurements is investigated. Based on the well-known fact that the albedo of the Earth's surface in the range of the zenith angle of the Sun θ = 10° - 60° increases almost linearly depending on it. The values of the zenith angle of the Sun obtained in this way are called the most informative zenith angles in the sense of ensuring maximum informative measurement of the earth's surface, and the albedo values corresponding to these zenith angles are the optimal albedo values at which optimal (maximally informative) roughness measurements can be carried out in the zenith angle range of 10° - 60°.
A study of geochemical features of medicinal oils
Authors: Guliev I. S. , Martynova G. S. , Maksakova O. P. , Nanajanova R. G. , Velimetova N. I. , Zeinalov S. G.
Published: September 2024

The article provides data on the geochemical properties of the fields officially recognized as medicinal crude oils in Croatia and Naftalan, Azerbaijan. Studies of hydrocarbon, biomarker and microelement compositions were carried out using the following methods: chromatography-mass spectrometry, mass spectroscopy with inductively coupled plasma, and the combined thermal analysis. Determination of the potential fractional composition of oil was carried out using a synchronous thermal analyzer and showed that medicinal Naftalan and Croatian medicinal crude oil have a similar fractional composition. The hydrocarbon composition and biomarkers analyses – determination of steranes, hopanes and adamantanes in the studied oils – was accomplished on a Clarus 680 Perkin-Elmer chromatography-mass spectrometer. It was defined that the medicinal and fuel oils of Naftalan differ significantly in hydrocarbon composition, while compared with the Croatian medicinal crude oil, the medicinal Naftalan oil is almost identical in hydrocarbon composition and biomarker-geochemical parameters. Using the ICP method, microelement data on the composition of the Croatian medicinal crude oil and the medicinal Naftalan oil was obtained; both of studied oils are of the ferruginous type. The Naftalan medicinal oil quantitatively exceeds the Croatian medicinal crude oil in terms of microelement content. Despite the difference in the genesis and geological structure of the medicinal oil fields in Croatia and Naftalan, Azerbaijan, the study of their hydrocarbon, biomarker and microelement compositions showed undoubted similarity. It can be suggested that the organic matter (OM) involved in the formation of the oils have almost the same origin.
Spread of unique lakes in the territory of Yakutia
Authors: Pakhomova L. S.
Published: September 2024

The article considers the distribution of unique lakes in the territory of Yakutia. The Republic of Sakha (Yakutia) is one of the most lake regions in Russia. Since 1978, the Laboratory of Lake Science of the Yakut State University, later North-Eastern Federal University, has been engaged in scientific research of the lakes of Yakutia for many years under the scientific supervision of the famous geographer-limnologist, Ph.D., Professor I.I. Zhirkov, which is known among lake scientists of Russia and the world as the Yakut school of Limnology. As a result, a landscape-limnogenetic classification of lakes by types of basin origin was compiled, hydrological and morphometric parameters were identified, lake resources were determined, including "unique lakes" [1]. Unique lakes are a group of specially protected lakes that represent great economic, social and aesthetic value for current and future generations. The list of 26 unique lakes was determined by Decree of the President of the RS (Ya) dated 08/16/2004 No. 836 [2].

The unique lakes of Yakutia are mainly considered in the ecological aspect as specially protected natural objects. The relevance of this article lies in the geographical approach to identify the uniqueness, natural features of the unique lakes of Yakutia. A comprehensive geographical description provides a general physical and geographical characteristic of each unique lake, depending on its geographical location, natural features, accessibility, natural and economic significance for the economy, population, conservation status, etc.

The landscape approach to the spatial analysis of the distribution of lakes was reflected in the consideration of the distribution of unique lakes across the physico-geographical provinces of Yakutia.
Creation of a Multiprocessor Schedules in Real-Time System with Communication Restrictions Between Processors
Authors: Фуругян М.Г.
Published: September 2024

Рассматривается задача построения допустимого расписания комплекса программных модулей в многопроцессорной системе реального времени с неполным графом связей между процессорами. Заданы длительности выполнения модулей и их директивные интервалы. При выполнении модулей допускаются прерывания и переключения с одного процессора на другой с учетом ограничений на связи между процессорами и на число переключений в фиксированный момент времени. Параллельное выполнение нескольких модулей одним процессором и одного модуля несколькими процессорами не допускается. Решение задачи основано на ее сведении к многопродуктовой потоковой задаче в сети.

The problem of constructing an admissible schedule for a complex of program modules in a multi-processor real-time system with an incomplete graph of connections between processors is considered. The duration of the modules execution and their directive intervals are set. When executing modules, interrupts and switching from one processor to another are allowed, taking into account the restrictions on communications between processors and on the number of switches at a fixed point in time. Parallel execution of several modules by one processor and one module by several processors is not allowed. The solution of the problem is based on its reduction to a multicommodity flow problem in the network.
Импортозамещение в промышленности: отечественные решения для реверс-инжиниринга и инженерных расчётов
Authors: Москалев И.В. , Баканов А.А.
Published: September 2024

Рассмотрены особенности и возможности отечественных продуктов в области проектирования, применяемых на разных стадиях жизненного цикла изделий: инструменты для реверс-инжиниринга, экспресс-анализа конструкторских решений, выполнения расчетов и виртуальных испытаний моделей изделий. Большинство предложенных решений совместимы с операционными системами Linux.
Применение 3D-модели в судостроении
Authors: Черанев И.В.
Published: September 2024

Рассматривается процесс построения параметрической 3D-модели теоретической поверхности наружной обшивки корпуса судна с использованием внутренней системы обработки данных в САПР T-FLEX CAD 17.
A Dual Catalytic Approach for the Halogen-Bonding-Mediated Reductive Cleavage of α-Bromodifluoroesters and Amides
Authors: Tasnim Tarannum , Shafiei Negin , Laminack Katelyn , Robertson Bailey , Nevels Nash , Fennell Christopher , Pitre Spencer
Published: September 2024

While charge-transfer complexes involving halogen-bonding interactions have emerged as an alternative strategy for the photogeneration of carbon radicals, examples using (fluoro)alkyl bromides are limited. This report describes a dual catalytic approach for radical generation from α-bromodifluoroesters and amides under visible light irradiation. Mechanistic studies suggest that the reaction proceeds through in-situ bromide displacement using a catalytic iodide salt, generating a C–I bond that can be engaged by our halogen-bonding photocatalysis platform.
Computational Methods in Drug Discovery and Development
Authors: Ugurlu Sadettin Yavuz
Published: September 2024

The rapid advancements in computational methods have revolutionized drug discovery and development. These methods, ranging from molecular modelling to machine learning algorithms, have drastically increased in number and sophistication. However, a comprehensive understanding of these diverse approaches is essential for researchers aiming to make significant contributions to this evolving field. This review aims to provide a detailed overview of the most prominent computational methods currently used in drug discovery. It will analyze their underlying principles, discuss their applications, and highlight their potential for future advancements in the field. Through this examination, we aim to equip researchers with the necessary insights to navigate and contribute to the rapidly expanding landscape of computational drug discovery.
The temperature dependence of Mössbauer quadrupole splitting values: a quantum chemical analysis
Authors: von Rhein Niklas , Krewald Vera
Published: September 2024

The two key parameters extracted from Mössbauer spectroscopy, the isomer shift and the quadrupole splitting, have well-known temperature dependencies. While the values’ increase or decrease with sample temperature have long been established, the microscopic origins are less clear. For quantum chemical calculations – formally representing the situation at 0 K – significant discrepancies with experiment can arise depending on the temperature. Herein, we introduce an enesemble-based appraoch for capturing the temperature dependence of the quadrupole splitting. Our method is exemplified with [Fe(TPP)(2-MeHIm)]. We rationalise the temperature dependence by changes in the electric field gradient due to specific vibrational distortions. We use a normal mode fitting approach to isolate the specific collective nuclear movements that are associated with the changes in the quadrupole splitting.
Effect of Confinement on the Translational Diffusivity of Small Dye Molecules in Thin Polystyrene Films and Its Connection to Tg-Confinement and Fragility-Confinement Effects
Authors: Lan Tian , Fenimore Logan , Torkelson John
Published: September 2024

Using fluorescence, we study the impact of nanoscale confinement on the translational diffusivity (D) of trace levels of a small-molecule dye, 9,10-bis(phenylethynyl)anthracene (BPEA), in supported polystyrene (PS) films via Förster resonance energy transfer (FRET). Reductions in BPEA diffusivity are observed in films thinner than ~200 nm, with D decreasing by 80–90% in 100-nm-thick films compared to bulk. The activation energy of BPEA diffusivity increases from ~210 kJ/mol in bulk films to ~370 kJ/mol in 130-nm-thick films. BPEA exhibits a greater diffusivity-confinement effect than a larger dye, decacyclene, in terms of both the length scale at which confinement effects become evident and the percentage reduction in diffusivity. For both BPEA and decacyclene, the diffusivity-confinement effect in PS films occurs at a length scale much larger than that for the glass transition temperature (Tg)-confinement effect and somewhat larger than that for the fragility-confinement effect. This difference in confinement-effect length scales can be rationalized as follows: small-molecule dye diffusivity relates predominantly to short times in the α-relaxation distribution, whereas Tg relates to long times in the α-relaxation distribution, and fragility reflects the overall breadth of this relaxation time distribution. If confinement results in a narrower relaxation time distribution in PS with the short-time relaxations being shifted to higher times and the longest-time relaxation regimes being shifted to lower times, then Tg, diffusivity, and fragility all decrease at sufficient levels of confinement. If the narrowing with confinement begins with the shortest relaxation time regimes, then fragility and small-molecule dye diffusivity are influenced by confinement at larger length scales than Tg.
An Assessment of Promoting Culinary Tourism in Ghana
Authors: Sanful R. E. , Commey V. , Okech R. N. , Kissi M.
Published: September 2024

Purpose: Ghana's tourism and hospitality industry has been extensively researched over the past five decades, primarily focusing on culture and heritage tourism, nature and economic tourism, marketing, and service quality. The aim is to assess the potential of culinary tourism as a powerful tool for creating sustainable livelihood empowerment channels, offering a beacon of hope for the future.
Design/Methodology/Approach: The study was conducted with a rigorous qualitative research design and desk review approach, ensuring a comprehensive topic exploration.  Published data and literature on the food tourism prospects of eight regions in Ghana were analysed. The gathered data was then subjected to content analysis, a common technique in qualitative research.
Research Limitation: The findings derived from the desk review may not be generalisable to other contexts, populations, or geographic areas due to the reliance on specific literature that may not capture all perspectives. This acknowledgement ensures that the audience is fully informed about the scope of the study.
Findings: The study exposes the stark reality that the culinary tourism market in Ghana, despite its significant potential, remains underdeveloped. This underscores the crucial need for strategic interventions and the active participation of all stakeholders in the industry's development.
Practical Implication: From a practical point of view, the Ghana Tourism Authority must show greater interest in developing the sector by organising regional and national food festivals annually. This effort must be publicised internationally to attract tourists interested in exploring Ghana's culinary diversity.
Social Implication: Culinary tourism promotes sustainable food production and consumption practices by emphasising local, seasonal, and environmentally friendly ingredients. This reduces tourism's carbon footprint and supports responsible consumption patterns.
Originality/Value: This study has revealed a significant research gap with practical implications. Thus, narratives on the potential of culinary tourism across eight regions in Ghana have known to have been provided practical actions towards enhancing culinary tourism in Ghana.
Border surveillance: biometric technologies and personal data in Latin American migration
Authors: Murrugarra Retamozo Brenda Isabel
Published: September 2024

The study aims to understand how the development of biometric technologies and systems by the U.S. Government surveils migrants and asylum seekers from Latin America. In the methodology, I applied a qualitative approach with a descriptive level. I used the observation technique for the conference on migration and surveillance in Latin America, and the notebook as an instrument. Also, I used the documentary analysis technique, with the paraphrase card instrument for the five (5) scientific articles related to migration and surveillance. The results I obtained show that: (i) the use of biometric technologies at the U.S.-Mexico border by the U.S. Government would present risks to the fundamental rights of migrants and asylum seekers from Latin America, such as the right to privacy, (ii) the collection of biometric data through the CBP One application would facilitate the surveillance of migrants and asylum seekers from Latin America, and (iii) the exchange of biometric data that would be taking place between the U.S. Government and the Latin American Governments, would constitute a critical violation of the fundamental rights of migrants and asylum seekers from Latin America. I concluded that the use of biometric technology for surveillance purposes, which the U.S. Government would carry out or would intend to carry out on migrants and asylum seekers from Latin America, would constitute a serious violation of the fundamental rights of this group.
Features of the Sufi Sheikh's Therapeutic Practice in the Late Medieval Transoxiana
Authors:   Institute of International Relations, Kazan (Volga Region) Federal University, Ismoilov L. E. , Abrorov I. M. ,   Institute of International Relations, Kazan (Volga Region) Federal University
Published: September 2024

Miracles and miraculous deeds of the Sufi sheikh (auliyya), performed in various forms and types, are considered one of the important elements in Sufism. They show the Sufi sheikh as the God's chosen one and at the same time his holy nature. A key area of life where the miraculous deeds of a Sufi sheikh is more fully realized is the treatment of sick people from different social strata of the population. While treating their patients Sufi sheikhs did not particularly hide their material or other interests. They were especially intent on the treatment of representatives of the political and economic elite of society and in this matter they had an intense rivalry with other Sufi sheikhs for clients. This study is based on various Muslim hagiographic works (manaqib), such as “Ziya alkulub” (Radiance of hearts), “Lamahat min nafahat al-quds” (Reflections from the breath of holiness), devoted, in particular, to the life of famous Sufi sheikhs of 16th century in Maverannahr. They contain information about the healing of the sick by acclaimed Sufis. Regardless of whether the Sufi sheikhs had any medical knowledge, they possessed one undeniable quality: they had the gift of healing, so the sick came in crowds. In Islam, visiting a sick person, providing him with spiritual and material support and assistance is considered a charitable deed, as well as the duty of a Muslim. It is noteworthy that in the studied manakibs such a charitable deed is successfully combined with the miracles of Muslim saints in the field of healing practice.