bluuebunny/crossref_metadata_2025 huggingface dataset:
Movie in the Specialty of Art Practice: Post Scriptum to the Conference
Authors:   South Ural State University, Dydrov Artur , Grednovskaya Elena ,   South Ural State University, Klenovskaya Vasilisa ,   South Ural State University
Published: February 2023

On July 2–5, a conference was held (Chelyabinsk region, Miass), dedicated to art practices as a format of philosophizing and technology for developing a philosophical dialogue. The main structural elements of the conference were events that included the analytics of feature films (including author's movie). The formal integrity of the event did not exclude the substantial unity provided by the permanent focus on anthropological issues and, above all, human subjectivity. The latter, in various historical epochs, faces heterogeneous challenges, including existential ones – borderline situations, critical social circumstances, life path uncertainty, progressive technical and technological innovationism and the threat of de-anthropologization. All the cinematographic works presented in a specific manner represented the variations of responses to these challenges. The philosophical and anthropological optics of analysis made it possible to keep the main task of carrying out a philosophical dialogue in focus. The issue of subjectivity and the challenges that call it into question is optimally illustrated in the situation of modernity by means of visual and audiovisual content, which actually includes all the patterns that are significant for today's person – visibility, brevity, stimulation of affects, etc. The philosophical approach allows expanding the thesaurus of art practitioners beyond through the integration of cinematography, which can exist not only in the traditional locus of an independent direction of art, but also as a determinant for the implementation of philosophizing, a step for further development of conceptual ideas and the collaboration with the world philosophical culture.
Socially-Oriented Non-Profit Organizations in the Structure of the “Third Sector” of the Economy in Russia
Authors:   P.G. Demidov Yaroslavl State University, Dudina Irada , Efimova Elena ,   Ural State University of Economics, Prostova Dina ,   Ural State University of Economics
Published: February 2023

The purpose of the paper is to study the functioning of socially oriented non-profit organizations (SO NPOs) in the structure of the third sector of the Russian economy, realizing socially significant benefits for society. To achieve the goal, interpretations of the concept of non-profit organizations (NPOs) were generalized and systematized, the main characteristics of their activities were identified, statistical indicators were studied, which made it possible to determine the essence and significance of the functioning of these organizations from the standpoint of public utility. Society is in demand for social benefits that are aimed at meeting the market needs of people. This study is an attempt to answer the question, how can the social benefits demanded by society be realized in modern conditions? This determines the relevance of the scientific article. The research uses the following methods: analysis, generalization and systematization of scientific provisions in the field of functioning and development of non-profit organizations; comparison of the main normative legal acts in the field of the right field of activity of these organizations; analysis of a sample of statistical data revealing the dynamics of indicators of non-profit organizations in quantitative and qualitative aspects. The theoretical contribution of the study is to determine the essence of the activities of socially-oriented non-profit organizations, their structure based on classification by type of activity, justification of the legal field of their activities. From a practical point of view, the contribution of socially-oriented non-profit organizations to the socio-economic development of the country is determined based on the analysis of statistical data. The analysis of indicators of functioning of socially-oriented non-profit organizations in the field of vocational education is carried out. The demand for educational services of various types of NGOs was noted, which has increased many times by 2021. There is a tendency to decrease the number of students enrolled in higher education programs, a significant increase in the number of students enrolled in secondary special education programs, as well as an increase in the number of private organizations of vocational education. The article concludes that SO NPOs operating in the field of vocational education form and develop the human resources potential of the regional economy, influence the situation on the regional labor market, minimize the risks of unemployment and social isolation of people due to low qualifications.
Advanced Techniques in Head and Neck Cancer Imaging: Guide to Precision Cancer Management
Authors: Shah Diva , Gehani Anisha , Mahajan Abhishek , Chakrabarty Nivedita
Published: February 2023

Precision treatment requires precision imaging. With the advent of various advanced techniques in head and neck cancer treatment, imaging has become an integral part of the multidisciplinary approach to head and neck cancer care from diagnosis to staging and also plays a vital role in response evaluation in various tumors. Conventional anatomic imaging (CT scan, MRI, ultrasound) remains basic and focuses on defining the anatomical extent of the disease and its spread. Accurate assessment of the biological behavior of tumors, including tumor cellularity, growth, and response evaluation, is evolving with recent advances in molecular, functional, and hybrid/multiplex imaging. Integration of these various advanced diagnostic imaging and nonimaging methods aids understanding of cancer pathophysiology and provides a more comprehensive evaluation in this era of precision treatment. Here we discuss the current status of various advanced imaging techniques and their applications in head and neck cancer imaging.
Vulnerability analysis on a dataset of long-span timber structures in Italy
Authors: Gaspari Andrea , Modena Roberto , Giongo Ivan , Piazza Maurizio
Published: February 2023

Long-span structures such as school gyms and sports centres are often used by the Italian Department of Civil Protection as post-catastrophe shelters or headquarters. The Emilia 2012 earthquake drew the attention of the department to this type of structure due to the damage that many of these buildings suffered. In this work, a dataset of 101 timber structures was analysed based on a simplified methodology that detects the major vulnerabilities in long-span timber roofs in order to help plan further investigations and retrofit interventions. Using fast and straightforward approaches, the elements most vulnerable to seismic action were analysed quantitatively and qualitatively. Quantitative evaluation of the vulnerabilities was achieved by applying the Italian Building Code. The aspects not considered in the quantitative evaluation were assessed through qualitative parameters inspired by damage identification forms (e.g. the AeDES form). The analysed structures are located near the epicentres of the last strong earthquakes that struck Italian territory: Abruzzo in 2009, Emilia in 2012 and central Italy in 2016. Damage and retrofits, identified by interviewing owners, designers and builders, showed a good correlation between the real behaviour shown by the surveyed structures and the vulnerabilities detected using the simplified methodology.
Performance of honeycomb sandwich structure under combined blast and impact of fragments
Authors: Shirbhate Payal A. , Goel Manmohan Dass
Published: February 2023

The response of sandwich structures under the synergistic effects of blast wave and fragments is a topic of interest for researchers and designers. Thus, the performance of a sandwich structure used for enhancing the protection of a target structure is numerically investigated because it may experience such complex loading conditions resulting from combined blast and fragment impact. A conventional sandwich structure modelled using aluminium alloy resists a bare blast load imposed on it. Analysis, however, reveals that fragments penetrate through the front facesheet of a conventional sandwich structure, indicating a lower resistance of the front facesheet to combined blast and fragment effects. Thus, the behaviour of conventional aluminium honeycomb sandwich structures is compared with enhanced sandwich configurations consisting of a front facesheet covered with multilayer lightweight composite Kevlar fabric material. The Kevlar fabric arrests the maximum number of fragments, and reduces their momentum, thereby reducing the damage level in the sandwich structure. The effect of the charge weight and shape of the fragments on the damage modes of the sandwich structure is also assessed. With the increase in charge weight, the momentum of the fragments is found to increase, and these penetrate the back facesheet of the sandwich structure.
Association Between Perceived and Objective Measures of School Neighbourhood Built Environment and Active Transport to School in New Zealand Adolescents
Authors: Rahman Mohammad Lutfur , Moore Antoni B. , Keall Michael , White Brittany , Mandic Sandra
Published: February 2023

School neighbourhood built environment (BE) characteristics are related to active transport to school (ATS) among adolescents. This study examined objectively measured and perceived school neighbourhood BE correlates of ATS in adolescents and compared school neighbourhood BE features in rural versus small-to-medium urban areas. We analysed data from adolescents (n=95; 68.4% under 16 years of age; 58.9% female) from 11 schools located in small-to-medium urban areas and rural settings in Otago, New Zealand, who were familiar with their school neighbourhood environment and living within 4.8 km from school. Adolescents reported perceptions of their school neighbourhood using a modified version of Neighbourhood Environment Walkability Scale for Youth (NEWS-Y) questionnaire. Objectively measured BE features were generated using Geographic Information Systems (GIS). In a multivariate analysis, perceived residential density (odds ratio (95% CI): 0.17 (0.04, 0.82)) and traffic safety concerns (0.13(0.02, 0.95)) were negatively associated with adolescents' ATS rates, but those associations were no longer significant once distance to school was taken into account. Compared to small-to-medium urban area schools, perceived land use mix diversity and recreational facilities and objectively measured intersection density in school neighbourhoods were higher, whereas perceived residential density and land use mix accessibility and objectively measured neighbourhood walkability were lower in rural schools (all p < 0.05). Future initiatives should address both perceived and objectively measured school neighbourhood BE to promote ATS among adolescents.
Interdiffusion in refractory metal systems with a BCC lattice: titanium–tantalum and titanium–multicomponent (high-entropy) alloy
Authors: Razumovsky M. I. , Rodin A. O. , Bokstein B. S.
Published: February 2023

In this work, the interdiffusion features in multicomponent (high-entropy) alloys of refractory metals were studied. The following pairs were chosen as the diffusion study objects: titanium–equiatomic alloy (Hf–Nb–Ta–Ti–Zr–Mo) and titanium–tantalum for the sake of comparison. The article covers the issues of sample preparation, microstructure study, sample preparation methodology for diffusion research, and experimental results. Diffusion annealing was carried out for 12 h in a vacuum at a residual argon pressure of 6.65·10–3 Pa and a temperature of 1200 °С. Particular attention was paid to the method of combining diffusion pairs (titanium with tantalum, titanium with alloy) by thermal cycling near the polymorphic transformation temperature in titanium (882 °C) within ± 50 °C. The behaviour of the most characteristic elements (Ta, Zr, Ti) in the weld area after the titanium and alloy diffusion pair joining was demonstrated. This is the first time that data on the dependence of the intensity of the corresponding spectral line for titanium and elements of a multicomponent alloy on the penetration depth were obtained. A change in the signal intensity for system elements was observed at a depth of 150–200 μm, whereas a sharp drop in the signal intensity was seen to occur at depths of about 50 μm. The effective value of the coefficient of diffusion of elements into titanium averaged over all elements of the alloying system (except for titanium) at a temperature of 1200 °C was calculated. The obtained value was compared to reference data: the self-diffusion coefficient in β-titanium and diffusion coefficients in titanium pairs with alloy doping elements.
IMPROVING THE SYSTEM OF RECRUITMENT AND ADAPTATION OF PERSONNEL AT THE ENTERPRISE
Authors:   Ufa State Petroleum Technological University, Malikov R.I. , Nazyrov A.D. ,   Ufa State Petroleum Technological University, Zolotukhina A.Yu. ,   Ufa State Petroleum Technological University, Nagaeva A.R. ,   Ufa State Petroleum Technological University, Shaykhutdinova E.Il. ,   Ufa State Petroleum Technological University
Published: February 2023

The article describes the theoretical and practical aspects of the recruitment and adaptation system, the necessity of adaptation. The features of personnel selection facilitating further adaptation are revealed
An OMT-G model for the urban registry of the city of João Pessoa - PB
Authors:   Universidade Federal da Paraíba (UFPB), INOJOSA Diogo
Published: February 2023

This work makes a brief discussion about the Land Cadastre, approaching the technologies related to the Land Administration System (LAS) and commenting on how they enabled changes in the way of organizing the territory information. The work evidences the elaboration of an open structure for the development of an OMT-G model - Object Modeling Technique for Geographic Applications, for the Urban Land Cadastre (ULC) of João Pessoa, capital of Paraíba (PB), in Brazil. The present study promotes a theoretical and methodological discussion for the identification and functional differentiation of cadastral parcels, from the implementation of the OMT-G model of ULC in a Geographical Database of a certain area of the city of João Pessoa, which allows to discuss the potential and practical possibilities of this model.
Land cover and characteristics of surface temperatures and normalized difference vegetation index in the São Paulo-Paraná-Mato Grosso do Sul Division
Authors:   Universidade Estadual Paulista (Unesp), AMORIM Margarete Cristiane de Costa Trindade , PASSOS Messias Modesto dos ,   Universidade Estadual Paulista (Unesp), AMORIM Amanda Trindade
Published: February 2023

The purpose of this article is to analyze the changes in land cover in the São Paulo-Paraná- Mato Grosso do Sul dividing line following the formation of lakes for the generation of energy from hydropower plants, considering the years 2001 and 2021, in addition to verify how the transformations in the landscape affected the vegetation cover and surface temperatures. To do this, images from the Landsat 7 and 8 satellites were used, as well as maps of land cover, and NDVI (Normalized Difference Vegetation Index) and surface temperatures were generated in order to analyze vegetation interference on the target temperatures. Among the available images, those that were suitable for this type of study (without cloud cover) were chosen on representative days of the dry season, taken on August 3, 2001, and on August 18, 2021, as well as of the rainy season, taken on February 7, 2021. The results showed that, even with minor changes in land cover in the period from 2001 to 2021, the decrease in vegetative vigor, as confirmed by the NDVI, in the dry period resulted in an increase in areas with higher target temperatures. It also showed that the spatial variability of surface temperatures in the São Paulo-Paraná-Mato Grosso do Sul dividing line does not depend solely on the transformations in the landscape but is rather directly related to the types of weather that provide greater or lesser precipitation totals in the period prior to the obtaining of the images. Therefore, it was demonstrated that changes in land cover alone do not respond to the variability and intensity of surface temperatures.
Theory and Development of Magnetic Flux Leakage Sensor for Flaws Detection: A Review
Authors:   Instrument, Automation and Control Section, Electrical Engineering Department, German Malaysian Institute, Sharif Nor Afandi , Ramli Rizauddin ,   Centre for Materials Engineering and Smart Manufacturing (MERCU),  Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia,, Nuawi Mohd Zaki ,   Centre for Integrated Design for Advanced Mechanical System (PRISMA),  Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Mohamed Abdullah Zawawi ,   Facilities of Future, PETRONAS Research Sdn. Bhd.
Published: February 2023

This paper presents a comprehensive review of the development of magnetic flux leakage (MFL) applied by the researcher to improve existing methodology and evaluation techniques in MFL sensor development for corrosion detection in Above Storage Tanks (ASTs). MFL plays an important role in Non-Destructive (NDT) testing to detect crack and corrosion in ferromagnetic material. The demand for more reliable MFL tools and signal acquisition increase as it has a direct impact on structure integrity and can lead to major catastrophic upon questionable signal analysis. The accuracy of the MFL signal is crucial in validating the proposed method used in MFL sensor development. This is because the size, cost, efficiency, and reliability of the overall MFL system for NDT applications primarily depend on signal acquisition as a qualitative measure in producing a reliable analysis. Therefore, the selection of appropriate tools and methodology plays a major role in determining the overall performance of the system. This paper also discusses the advantages and disadvantages of major types of MFL sensors used in NDT based on the working principle and sensitivity on the abrupt signal acquisition. The application of the Artificial Neural Network (ANN) and Finite Element Method (FEM) also discussed to identify the impact on the credibility of the MFL signal.
Ultra-Wideband Planar Antenna with Notched-Band for WIMAX, WLAN and MSAT Applications
Authors:   Malaysia-Japan International Institute of Technology (MJIIT), UTM Kuala Lumpur, Malaysia Faculty of Engineering, Lincoln University College, Malaysia, Jainal Siti Fatimah , Mohamed Norliza ,   Razak School of Engineering and Advanced Technology, UTM Kuala Lumpur, Malaysia, Hamzah Azura ,   Malaysia-Japan International Institute of Technology (MJIIT), UTM Kuala Lumpur, Malaysia, Subahir Suhaila ,   Centre for Communication Engineering Studies, Universiti Teknologi MARA (UITM Shah Alam), Selangor, Malaysia
Published: February 2023

Ultra-wideband (UWB) with triple band notch characteristics was presented. WIMAX, WLAN and Meteorological Satellite (MSAT) frequency bandwidths were rejected in the UWB planar antenna composed from a single layer conductor element. Frequency bandwidths for WIMAX, WLAN and MSAT are allocated at 3.3~3.7, 5~6 and 7.4~8.4GHz, respectively. Conductor element etching method was used as the means to realize the band notch characteristics as it was considered convenient and simple. Two slits were etched on the ground plane while on the elliptical element, a single slit. The slits were designed for simplicity in the means of achieving the desired band notch characteristics. The proposed antenna design was compact and low profile. The antenna performances were compared with the reference antenna and the results were negligible.
Time Study to Establish Standard Time in a Television Manual Assembly Production
Authors:   Department of Mechanical and Manufacturing Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM, Malaysia, Bt. Mohd Ali Norliza , Saibani Nizaroyani ,   Department of Mechanical and Manufacturing Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM, Malaysia, Hishamuddin Hawa ,   Department of Mechanical and Manufacturing Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM, Malaysia, Ab Rahman Mohd Nizam ,   Department of Mechanical and Manufacturing Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM, Malaysia, Balfaqih Hasan ,   Supply Chain Management Department, College of Business Administration- Dahban, University of Business and Technology, P.O.  Box 33335, 21448, Jeddah, Saudi Arabia
Published: February 2023

Competitive TV business makes a force in manufacturer to figure out a huge contribution in cost reduction instead of just material and design cost. Hence, productivity is the main target area to be improved. Previously, one of the contributed costs for manufacturing cost is the direct labor cost. But, since productivity improvement effort is done actively, no clear measurement method used because labor cost was calculated using a fix predetermined standard time. Therefore, the main objective is to verify whether the predetermined standard time is accurate enough to measure the productivity improvement effort where it was set higher to its actual tact time by 19%. By conducting a standard time study with actual manual production line which consist of eleven work stations and twelve operators, there are 5 revision items selected to be revised to a new series of standard time based on its actual time and 15% human factor allowance, which is the second objective of the study. The objectives of this study were accomplished by using an action research where it consists of specific video recording activity which was analyzed using an industrial software called OTRS. From here, data comparison was done and it shows a total of 1.96min is saved from the original predetermined standard time. Ultimate result of this study is; there were five processes that have been revised its standard time which has big difference between its predetermined standard time and its actual production time. Indirectly resulting to actual labor cost reduction of USD$846,615.
Review on High-Performance Air Cathode Microbial Fuel Cell for Power Generation and COD Reduction
Authors:   Fuel Cell Institute, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia, Ignatius Sitorus Samuel Reinhard , Abu Bakar Mimi Hani ,   Fuel Cell Institute, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia, Herianto Majlan Edy ,   Fuel Cell Institute, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
Published: February 2023

The world population is projected to increase by one billion for the next ten years from the year 2016. Unfortunately, global power plants still using non-renewable energy sources. Consumption of fossil fuels harms the environment, while nuclear energy could release a significant amount of radioactive material. Besides the energy issues, the growth in population contributes to the high production of wastewater. Every year, the wastewater treatment industry consumes a high input of energy for treatment purposes. These issues invigorate research interest in microbial fuel cell (MFC) technology that can generate green power electricity while breaking down the organic matter in the wastewater. One of the research advancement in MFC is the air-cathode MFC that is scaled-up friendly due to its simple structure, and ability to utilize the abundance of oxygen in the air as the membrane and scaling up arrangements. Therefore, this review aims to discuss the main positive findings contributing to the recent improvement of air-cathode MFC and the obstacles faced for upscaling.
Synthesis and Physicochemical Characterisation of Amine Functionalised SiO2/PBI derivatives nanocomposite membrane
Authors:   University Kuala Lumpur Malaysian Institute of Chemical and Bioengineering Technology (UniKL MICET), 78000 Alor Gajah Melaka, Malaysia, Aiman Tahrim Amir , Mohd Amin Indok Nurul Hasyimah ,   University Kuala Lumpur Malaysian Institute of Chemical and Bioengineering Technology (UniKL MICET), 78000 Alor Gajah Melaka, Malaysia
Published: February 2023

In this study, a series of amine functionalised silica/OPBI nanocomposite membrane for high-temperature polymer electrolyte fuel cell (HT – PEMFC) application were prepared. In order to provide a better dispersion and improving the interfacial interaction between organic/inorganic materials, polyethyleneimine was immobilised onto the surface of silica before added into poly(4,4’-diphenylether – 5, 5’-bibenzimidazole) (OPBI). Nuclear Magnetic Resonance (NMR) experiment proved the synthesised polymer while Fourier-transform infrared spectroscopy (FTIR) and EDX method used to validate the grafting of the amine derivative to the surface of silica in the polymer matrix. Although a satisfactory dispersion pattern was found on all nanocomposite membrane under scanning electron microscope (SEM) studies, agglomeration pattern was seen at higher loading of functionalised silica nanoparticles. The physicochemical characteristic of the nanocomposite membrane was investigated by using thermogravimetric analysis for high temperature PEMFC application. Lower water uptake and swelling ratio in both water and phosphoric acid (PA) showed by the OPBI / SiPEI with an increasing trend as the amount of SiPEI were increased. Addition of amine functionalised silica into OPBI shows a significant improvement compared to pure OPBI while the thermal stability of the membrane at high temperature region (100 – 200 °C) can be influenced by the loading concentration of the amine functionalised silica.
Effect of Intercritical Annealing on the Microstructural and Mechanical Behaviours of Dual-Phase Steels
Authors:   Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Osman Nora , Sajuri Zainuddin ,   Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Mohamed Intan Fadhlina ,   Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Omar Mohd Zaidi ,   Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Junaidi Syarif ,   Department of Mechanical and Nuclear Engineering, College of Engineering, University of Sharjah, Sharjah 27272, UAE
Published: February 2023

The automotive industry is the main consumer of dual-phase (DP) steels which have relatively impressive mechanical strength. DP steels are also known to have good ductility and load-bearing property because of their hard martensitic microstructure in soft ferrite grains. The main objective of this study is to determine the mechanical behaviour of DP steels with various martensite volume fractions. A heat treatment with an intermediate quenching procedure followed by three different intercritical temperatures is conducted to produce various ferrite–martensite containing DP steels with different martensite volume fractions (Vm). Vm affects the mechanical properties of steel, such as work hardening, ultimate tensile strength, yield strength and hardness. The results of the experiments conducted in this study prove that excellent work hardening and ductility are observed for DP steels with a low amount of martensite phase. Meanwhile, DP steels with high Vm exhibit high tensile strength and hardness with low ductility. Considère criterion is used to analyse the work hardening behaviour of DP steels. Results indicate that a one-stage work hardening takes place in DP steels; according to Considère criterion, instability strain or uniform elongation is also slightly increased by decreasing the martensite volume fraction or increasing the work hardening rate.
Effect of Mechanical Properties with Addition of Graphene Nano-Platelets In Cu/ GNPs Composite- Green Part
Authors:   Department of Mechanical and Materials Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Abdul Rashid Muhammad Omar , Muhamad Norhamidi ,   Department of Mechanical and Materials Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Sulong Abu Bakar ,   Department of Mechanical and Materials Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Kadiman Nor Nabilla ,   Department of Mechanical and Materials Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia
Published: February 2023

Graphene is one of the best reinforcement materials but have a strong tendency to agglomerate and will affect the final properties of the composite. Effect of mechanical properties with addition of Graphene Nano-platelets (GNPs) in copper through powder injection molding (PIM) process was investigated. 2 feedstocks was prepared, one is Cu 100% and Cu/0.5 vol.% GNPs. Both feedstocks use same powder loading, 62% powder and 38% binder and the binder system used for this study consist of polyethylene glycol (PEG), polymethyl methacrylate (PMMA) and stearic acid (SA). The feedstocks were sonicated, and ball milled using the same parameters and then continue with until injection process. The produced green part strength and density were tested. The main reason to for density testing is to determine either addition of GNPs will affect the composite density The average green density for Cu 100% is 5.835 g/cm3, which is 99.84 % from the theoretical density. Meanwhile for Cu/GNps 0.5%, the average density is 5.874 g/cm3, which is 99.91 % from the theoretical density. For the green strength, the average maximum flexural strength for Cu 100% is 15.29 MPa and 14.32 MPa for Cu/0.5 vol.% GNPs. Even though the density of Cu/GNPs composites decrease with addition of 0.5 vol% GNPs but both sample strength indicates good mechanical properties and suitable for debinding and sintering process.
Effect of Steam to Carbon Ratio (S:C) on Steam Methane Reforming’s yield over Coated Nickel Aluminide (Ni3Al) Catalyst in Micro Reactor
Authors:   Department of Mechanical Engineering Technology, Faculty of Engineering Technology, Universiti Tun Hussein Onn Malaysia,  Pagoh Education Hub, KM 1 Jalan Panchor, 84600 Pagoh, Johor, Malaysia, Madon Rais Hanizam , Fawzi Mas ,   Centre for Energy and Industrial Enviromental Studies (CEIES),  Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Batu Pahat, Johor, Malaysia, Sarwani Khairul Ilman ,   Centre for Energy and Industrial Enviromental Studies (CEIES),  Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Batu Pahat, Johor, Malaysia, Osman Shahrul Azmir ,   Centre for Energy and Industrial Enviromental Studies (CEIES),  Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Batu Pahat, Johor, Malaysia, Razali Mohd Azahari ,   Centre for Energy and Industrial Enviromental Studies (CEIES),  Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Batu Pahat, Johor, Malaysia, Mohammad Abdul Wahab ,   Faculty of Engineering and Built Enviroment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
Published: February 2023

This work looks into the effect of Steam to Carbon ratio (S:C) on methane (CH4) conversion and hydrogen (H2) yield over coated Nickel Aluminide (Ni3Al) catalyst in micro reactor. The Ni3Al is an intermetallic alloy which known to have good catalytic activity and selectivity. The Ni3Al catalyst precursor was prepared through dip coating technique at 10wt% on top of substrate plate and characterized by X-Ray Diffraction (XRD), Scanning Electron Microscope-Energy Dispersive X-Ray Spectroscopy (SEM-EDX), Temperature Programming Reduction (TPR), activated by H2 reduction, and catalytic activity test in steam methane reforming (SMR) reaction in micro reactor at S:C 2, S:C 3 and S:C 4 with 650°C reaction temperature and 300 minutes reaction time. The characterization showed the presence of Ni3Al on top of the coating surface and successfully been activated at 500°C and 46 minutes. The CH4 conversion and H2 yield in the product of the reaction were quantified using the Gas Chromatograph technique. From the series of experiments, it was found that S:C 4 produced the highest methane conversion of 65.56% and S:C 3 produced the highest hydrogen yield of 41.34%. The S:C 2, showed faster and smoother stability trend conversion as early as 180 minutes from the start of the reaction. However, S:C 3 showed the most optimum methane conversion and hydrogen yield and achieved stability trend conversion within the defined reaction time range of 300 minutes. It is inferred that the S:C 3 is the best steam to carbon ratio for the developed catalyst in these settings.
Evaluation of Sintered Hydroxyapatite (HA) via Powder Injection Molding
Authors:   Department of Mechanical and Manufacturing Engineering Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Jamadon Nashrah Hani , Abdullah Halid Nurul Izaan ,   Department of Mechanical and Manufacturing Engineering Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Sulong Abu Bakar ,   Department of Mechanical and Manufacturing Engineering Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Abd Shukor Mohd Hamdi ,   Universiti Kebangsaan Malaysia, Malaysia, Miyashita Yukio ,   Department of Mechanical Engineering, Nagaoka University of Technology, Japan
Published: February 2023

Hydroxyapatite (HA), a ceramic phosphate with good biocompatibility, has been extensively used in the field of bone replacement, both in orthopedics and in dentistry. Desired molded part of HA is fabricated by using powder injection molding (PIM) method. Powder loading, rheological properties and sintering atmosphere can significantly affect the quality of molded HA. The effect of these factors on the microstructure and mechanical properties of powder injection molded HA were investigated. Different powder loading of HA (54, 55 and 56 vol%), were mixed with binder 40 wt.% of palm stearin and 60 wt.% polyethylene. The temperature injection were set at 150°C, 160°C and 170°C with the pressure injection of 12 bar. The green body were then sintered in the furnace at temperature of 1100°C, 1200°C and 1300°C for 4 hours. Analysis of variance (ANOVA) is used to determine the optimization of injection molding. Based on the analysis, it was found that 56 vol% powder loading, temperature injection at 150°C up to 170°C and 12 bar pressure injection are the optimum parameters for the process of injection molding. Results further demonstrate that the optimum condition involves the specified HA with temperature injection at 170°C and sintered at 1300°C provides the highest hardness value and flexural strength of 690 Hv and 17.75 MPa respectively.
Integrated GIS Tool for Investigating the Relationship of Road Characteristics with Road Traffic Accidents
Authors:   Department of Civil Engineering Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Yaacob Nur Fatma Fadilah , Rusli Noradila ,   Centre for Innovative Planning & Development (CiPD),  Faculty of Built Environment and Surveying, Universiti Teknologi Malaysia, Malaysia, Bohari Sharifah Norashikin ,   Faculty of Architecture, Planning and Surveying, Universiti Teknologi MARA, Malaysia, Mat Yazid Muhamad Razuhanafi ,   Department of Civil Engineering Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Muhammad Das Amsori ,   Department of Civil Engineering, Faculty of Engineering, Universitas Batanghari Jambi, Indonesia
Published: February 2023

Road accidents pose a serious economic and social problems given that the number of fatal accidents continue to rise at the national and international levels. This study investigates the relationship between three road parameters, namely number of lanes, level of service (LOS), and slope, with road accidents. The data for road accidents were obtained from the Police Department - Contingent Headquarters (IPK) Alor Setar, Kedah, the data for roads, namely number of lanes and traffic volume, were obtained from Public Works Department (JKR), while the TanDEM-X Image was provided by the licensed holder. The ArcGIS software 10.5 was used to process the data; this is followed by performing the regression and kernel density estimation to determine the relationship between the parameters with accident cases. The majority of road accidents in Kedah occurred on two-lane roads. LOS is negatively correlated with road accidents, which indicates that less accidents occurred with higher level of flow. Slope is negatively correlated with road accidents, indicating that a smaller number of accidents occurred on roads with higher slope values. Alor Setar and Sungai Petani have been identified as road traffic accident hotspots for the period from 2013 to 2015. In summary, the findings of this study provide the relevant authority such as the Traffic Police with the critical information required to make a better decision when formulating strategies to reduce road traffic accidents.
An Improved Efficiency by Surface Modification Using Pulse Laser for Partial Transparent Bifacial Solar Cell
Authors:   Solar Energy Research Institute (SERI) Universiti Kebangsaan Malaysia, 43600 UKM Bangi Selangor, Malaysia, Rohaizar Muhd Hatim , Sepeai Suhaila ,   Solar Energy Research Institute (SERI) Universiti Kebangsaan Malaysia, 43600 UKM Bangi Selangor, Malaysia, Ahmad Ludin Norasikin ,   Solar Energy Research Institute (SERI) Universiti Kebangsaan Malaysia, 43600 UKM Bangi Selangor, Malaysia, Ibrahim Mohd Adib ,   Solar Energy Research Institute (SERI) Universiti Kebangsaan Malaysia, 43600 UKM Bangi Selangor, Malaysia, Sopian Kamaruzzaman ,   Solar Energy Research Institute (SERI) Universiti Kebangsaan Malaysia, 43600 UKM Bangi Selangor, Malaysia, H.Zaidi Saleem ,   Solar Energy Research Institute (SERI) Universiti Kebangsaan Malaysia, 43600 UKM Bangi Selangor, Malaysia
Published: February 2023

Bifacial solar cell has symmetrical configuration contacts on front and rear surface that eliminate expansion mismatch, decrease metal usage and improves photon absorption. The limitation of the reflector at the back of bifacial solar panel able to be eliminated by developing special designed partially transparent bifacial solar cell to optimize light trapping on rear surface. Therefore, the partial transparent silicon (Si) wafers were developed to increase light transmission to rear surface. Surface modification on Si wafer was conducted to form partial transparent Si wafer. Surface modification was employed by pulsed laser interaction to create dot marking array on Si wafer. Two pulsed laser power applied were 25.5W and 39.6W to produce pattern, then immersed in 10% KOH solution to etch laser-induced structure and debris to form partial transparent Si wafer. Low power laser was induced 80-85 μm depth of micro-hole, while high power was induced 140-145 μm. KOH treatment was conducted to etch laser region which to form deeper and wide micro-holes. The bifacial solar cells have been fabricated using partial transparent Si wafer and the current-voltage of the devices were tested. The front surface efficiency obtained for both partial transparent bifacial solar cells were 4.36% and 5.59%, while rear surface achieved 1.23% and 1.16%. Fabricated conventional bifacial solar cell has an efficiency of 2.39% for front and 0.64% for rear. The surface modification enhanced the efficiency due to the photon path length transmission to rear surfaces, micro-hole’s dimension and optical absorption in the near-infrared region.
Characterization of Titanium Alloy-Hydroxyapatite Composite through Powder Injection Molding
Authors:   Department of Mechanical Engineering, Faculty of Engineering, City University Malaysia,  Menara City U, No. 8, Jalan 51A/223,46100, Petaling Jaya, Selangor Darul Ehsan, Malaysia, Ramli Mohd Ikram , Mohd Foudzi Farhana ,   Department of Mechanical Engineering and Manufacturing, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi Selangor, Malaysia, Sulong Abu Bakar ,   Department of Mechanical Engineering and Manufacturing, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi Selangor, Malaysia, Abdul Yazid Fatin Aqilah ,   Department of Mechanical Engineering and Manufacturing, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi Selangor, Malaysia, Muhamad Norhamidi ,   Department of Mechanical Engineering and Manufacturing, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi Selangor, Malaysia, Hui David ,   Department of Mechanical Engineering, University of New Orleans, Engineering Building, EN 909, 2000 Lakeshore Drive, New Orleans, LA 70148
Published: February 2023

Powder injection moulding (PIM) is a process that combines the technologies of plastic injection moulding and powder metallurgy. The fabrication of titanium alloy-hydroxyapatite (Ti6Al4V/HA) composite using PIM is still poorly reported due to the difficulties in processing two different materials namely the metal and ceramic. Such promising composite can be proposed as an implant material due to its great properties. Hence, this work aims to characterise the properties of Ti6Al4V/HA composite produced by PIM. In this work, 90 wt% of Ti6Al4V and 10 wt% of HA were mixed with a binder system of 60 wt% palm stearin and 40 wt% polyethylene. The powder loading of the feedstock was 66 vol%. The feedstock with a pseudoplastic flow is preferred in PIM as fewer defects are formed during the injection moulding process. Moreover, the binders are removed in two stages namely the solvent and thermal debinding. Based on the observation, the removal of palm stearin created capillary routes that help to remove polyethylene during thermal debinding. Next, sintering was performed at three different temperatures, which include 1100oC, 1200oC and 1300oC. The heating rate, holding time and cooling rate was set at 3oC/min, 90 min and 6oC/min, respectively. It was found that Ti6Al4V/HA sintered at 1300oC yielded the highest density of 4.13 g/cm3. In addition, such sintered part also generated the highest flexural and Young’s modulus with the values of 86.4 MPa and 15.04 GPa, respectively. These values are approximately in the range of the physical and mechanical properties of the extant bone-implant.
“I’ve never seen such strength in people”: An Interview with Photographer Jérôme Sessini
Authors:   Taras Shevchenko national University of Kyiv, Shulha Valeriia
Published: February 2023

Jérôme Sessini is a French photographer, and member of Magnum Photos, in his works covers some of the most significant historical events of the last 30 years. The interview was recorded in January 2023 by Valeriia Shulha, a student of the Art History Department of the Taras Shevchenko National University of Kyiv. In the first part of the interview, Jérôme talks about the beginning of his career as an amateur photographer and American documentary photographers as his big inspiration. He started photography at the age of 23 and now he’s a leading photojournalist, having joined Magnum in 2012 and becoming a full member in 2016. Jérôme's lens covers political upheaval, social uprisings, and human struggle. He’d started working as a photojournalist in 1998 when he covered the conflict in Kosovo on behalf of the Gamma photo agency. Since then, he has been immersed in some of the most important events of recent years, including the war in Iraq (from 2003 to 2008), Aristide’s fall in Haiti (2004), the conquest of Mogadishu by the Islamic militias, and the war in Lebanon (2006). His works have one common feature - avoiding dry documentation, they’re picturing stories of ordinary people, to show the world’s social tragedies on a micro-scale. In the second part of interview the photographer explains why Ukraine is the most important project for him and shares his experience of documenting the events of modern Ukrainian history. In 2014, Sessini began covering events in Ukraine since the Revolution of Dignity. After the Maidan’s events, the photographer traveled throughout Ukraine for several years and gathered in his book "Inner Disorder" all the stories of Ukrainian’s lives ruined by the war. The photo book was published in 2021. Jérôme's work Final Fight for Maidan won the World Press Photo Awards in 2015. Sessini shares the story behind the creation of this image. A few days after the beginning of the Russian full-scale invasion of Ukraine in 2022, Sessini arrived in Ukraine, working on a series of photos for magazines such as "The New Yorker". Jérôme Sessini explains that the main aim for him is to create a coherent narrative in his works. The photographer always has been trying to communicate with the people he photographs. According to Jérôme, the only way to convey something to his audience is to feel and experience what you’re photographing.
ACTIVITIES OF SHELTERS FOR WOMEN VICTIMS OF DOMESTIC VIOLENCE IN UKRAINE: PROBLEMS AND PROSPECTS
Authors:   National University ", Balukhtina Olena ,   Zaporizhzhia Polytechnic",   , Zaporizhzhia, Ukraine, Kuzmin Viktor ,   National University "Zaporizhzhia Polytechnic", Zaporizhzhia, Ukraine, Kuzmina Maria ,   National University "Zaporizhzhia Polytechnic", Zaporizhzhia, Ukraine
Published: February 2023

Violence is one of the most widespread forms of violation of human rights in the world, which the state must defend and protect. Currently, in our country there are contradictions between the developed concept of combating domestic violence based on the interaction of various subjects and the insufficient level of its implementation due to the creation of an extensive network of specialized support services for victims. The purpose of the article is to analyze the activities of shelters that provide social services to women who are victims of domestic violence, and to justify the need to expand the existing network in Ukraine. The basic principles, mechanism of creation and financing of shelters are considered. The importance of applying world experience in this matter is substantiated. The financial support of international organizations in the process of creating shelters was studied. The study of shelter models, which are most represented in Ukraine, has been further developed. The main method used is the analysis of documents for the study of international legal agreements and national legislation on combating violence. In the course of the study, the main problems in the operation of shelters were identified. They are associated with a small number, insufficient funding, and a low level of public awareness of the availability and working conditions of institutions. The mechanism of cooperation between authorities and institutions that provide assistance to affected persons also needs coordination at the regulatory and practical levels. The following steps should be the ways of improvement: creation of an extensive network of shelters; professional development of specialists who work with women who are victims of domestic violence; increasing sources of funding for institutions, primarily through public-private partnerships.