bluuebunny/crossref_metadata_2025 huggingface dataset:
Physical Mechanisms in Plasma Spray Processing of Suspensions
Authors: Chergui A. , Lebot C. , Rat V. , Mariaux G. , Denoirjean A.
Published: August 2024

Suspension plasma spraying (SPS) is increasingly studied to produce finely structured coatings with dense and columnar microstructures for promising thermal barrier coatings especially in aerospace application. However, this process involves many parameters and complex phenomena with large spans of time and space scales in many physical mechanisms, like droplet break-up, liquid droplet evaporation, and various physical phenomena occurring within the suspension droplet, making it difficult to master. Especially, understanding the interactions of liquid drop submitted to plasma with the submicronic suspended particles is essential for material process optimization and control. For SPS understanding, a meaningful modelling of suspension treatment requires a prior analysis of these physical mechanisms and their characteristic times. This study details the different phenomena, their significance and characteristic timescales as well as the selection of the main governing forces acting between the different continuous and discrete phases (plasma, liquid, submicronic particles). We explore associated mechanisms: droplet breakup, carrier liquid evaporation, convective mixing and submicronic particle diffusion within the droplets. These mechanisms involve mass and heat transfer, that should condition particle agglomeration morphology before melting.
Investigation on Oxidation and Interdiffusion in the Systems of Aluminiferous Coatings and Superalloys
Authors: Sun Xiaoyu , Moverare Johan , Li Xin-Hai , Peng Ru Lin
Published: August 2024

A novel model for coating design was proposed in this research, by considering both oxidation property and interdiffusion effect, corresponding to two factors of the Cr:Al activity ratio and the potential of Al, respectively. To verify this model, oxidation tests of coated superalloys were performed at 1000 ° C for up to 5000 h. The test results indicated a strong positive correlation between GPDZ and Al potential and a clear negative correlation between oxidation kinetics parameter kp and Cr:Al activity ratio. Our research opened up new ideas for the coating design.
Fast and Non-Destructive Mechanical Characterization of Coatings from Thermal Spraying and Laser Cladding: Automated Surface Acoustic Wave Spectroscopy as a New Tool for Quality Control and Research
Authors: Zawischa Martin , Makowski Stefan
Published: August 2024

Laser-induced surface acoustic wave spectroscopy (LISAWS) allows quick and non-destructive access to elastic properties such as the Young's Modulus of coatings, surfaces and surface-near bulk materials. Furthermore, the mechanical weakening due to cracks and pores can be evaluated, as they influence the propagation of surface waves as well. Therefore, the method is a quick and powerful tool for surface characterization and can be found today in research and development, quality control and as a precise reference method. The short measuring time of the LISAWS measurement allow the distribution of the effective Young's modulus over the coated surface to be determined with a high accuracy. For this purpose, a LISAWS measurement system was automated to allow for processing of a larger amount of samples and fast mappings. The investigated coating materials were thermally sprayed Al2O3 insulation coatings and WC-reinforced 316L steel coatings on brake discs produced by laser cladding. For the Al2O3 coatings, the correlation of the Young's modulus and its areal distribution is shown for different process parameters, such as spray gun movement direction or spraying distance, and compared with results from pull-off tests. For the WC/316L coated brake discs, the distribution of the wave velocity over the coated surfaces or the two coated sides of different discs with varying coating qualities is used to assess the coating quality and homogeneity.
Characterizing Deformation by Positron Annihilation Spectroscopy: Cold Spray vs. High-Pressure Torsion
Authors: Cizek Jan , Medricky Jan , Stefanik Filip , Lukac Frantisek , Melikhova Oksana , Cizek Jakub
Published: August 2024

Cold spray (CS) is a progressive method for the deposition of metals and alloys whose principles involve considerable plastic deformation of the produced material at extreme strain rates. Positron annihilation spectroscopy (PAS) is an analytical technique capable of studying deformation on the atomic scale level, even in extremely deformed materials. In our study, the PAS method was used to characterize the deformation character at the lattice level and quantify the open-volume defects in four cold sprayed metals: Al, Cu, Ni, and Ti. As counterparts, bulk samples of these materials with ultrafine-grained structures were also produced by high-pressure torsion (HPT), a process exceeding cold spray in the total deformation, but having several orders of magnitude smaller strain rates, and by a traditional cold rolling process. The results show that the CS and HPT processes lead to the formation of similar lattice defects (dislocations and vacancy clusters), and both exhibit significantly higher dislocation densities than conventionally cold-rolled materials. Further, the vacancy clusters present in CS and HPT materials were not present in the rolled counterparts due to the lower vacancy production rate.
A Micro-Spectroscopic Approach to Characterizing Residual Stresses and Subsurface Modifications Due to High-Speed Collision During Cold Spray Deposition of Metals on Glass Substrates
Authors: Elkholey Ali K. , De Ligny Dominique , Raoelison Rija Nirina , Verdy Christophe , Bertrand Pierre , Langlade Cecile
Published: August 2024

By approaching the glass transition temperature it was possible to realize well quality metallic coatings on two different glasses using Cold Spray deposition, CS. A roughness is introduced on the glass surface and is proportional to the energy deposited. Using the thermal pressure memory effect of glass, Raman spectroscopy mapping allowed determining that the CS introduced a strong heterogeneity of the glass substrate characterized by zones with different cooling rate and residual stress. Using a simplified Eshelby's inclusion approach, it is demonstrated that the residual stress can be in first approximation explained by the introduction of local density fluctuation induced with high cooling rate of micrometric regions related with the impact of the deposited metallic particles.
Towards an Integrated Modular Cold Spray Additive Manufacturing System
Authors: Li Wenbo , Wu Hongjian , Liu Shaowu , Liao Hanlin , Costil Sophie , Deng Sihao
Published: August 2024

Cold spray additive manufacturing (CSAM) is an emerging process that has garnered significant attention from researchers due to its unique advantages. These include higher deposition rates, no need for a protective atmosphere, and the ability to connect or combine dissimilar materials. While CSAM allows for near-net-shape fabrication of workpieces, the accuracy and properties of the final products often fall short of user requirements. Furthermore, there is an urgent need to develop a generalized manufacturing strategy for workpieces with complex geometries. It appears that integrating various processes throughout the entire manufacturing workflow, from design to delivery, could address these challenges. However, few researchers have explored this area. To fill this gap, this study presents an integrated modular CSAM system designed for efficient and flexible workpiece fabrication. The system comprises two main components: software for modeling and simulation, and hardware for precise fabrication, each containing multiple modules. These modules do not operate independently but are coupled through direct or indirect decentralized and event-driven physical links. The system described in this paper offers a generalized strategy for precision manufacturing of workpieces using CSAM, potentially advancing the field and addressing current limitations in accuracy and versatility.
From Anticosti Island's ‘Deep Time’ to A Cold Spray Additive Manufacturing Art Creation
Authors: Nastic A. , Jodoin B. , Fitzgerald C. , Desaulniers S. , Pouliot L. , Caio F. , Macdonald D. , Duval A. , Dubois G. , Tessier V. , Etienne C.
Published: August 2024

Thermal spray (TS) technology has attracted the attention of numerous industrial sectors due to its apparent simplicity and versatility. It has been used across the world for over 80 years in the conservation and creation of art. Despite the creativity involved in the creation of an art piece, the TS artistic endeavors are limited and insufficiently explored. Unique material combinations, usually not observed in conventional engineering applications, can be achieved with TS technology. Although the material amalgamation possibilities are infinite, their combined deposited characteristics, interfacial compatibility and color palette require further study. In this work, the fields of photography, image processing and TS are combined to produce a large art-piece using the cold gas dynamic spray (CGDS) process. Aluminum, zinc, nickel, alumina, steel and titanium alloy powders are sprayed to replicate in three-dimensions a photograph of a crinoid from the Silurian period found on the Anticosti Island, located in the Gulf of St. Lawrence in Canada. The numerous steps required to produce the artistic 3D piece, namely numerical segmentation of the photograph, conversion to a computer-assisted design (CAD), manufacturing of steel masks and CGDS deposition of the selected powders to reach the sought color palette are described. Powder deposition efficiency, material compatibility and microstructural characteristics are analyzed. and the resulting art piece is presented.
Hard-Facing Coatings for Agriculture Tools
Authors: Möhrke L. , Hauer M. , Biswal P. , Gericke A. , Henkel Knuth-Michael
Published: August 2024

Whenever farming tools are used, the focus is on wear resistance. As the wear rate differs with local soil conditions, the progress of wear and thus the time for tool change is difficult to identify. Hence, component failure and breakage as well as the unknown retention of components or parts thereof in the field are possible undesirable consequences. This demands not only a better wear-resistant coating, but also a wear limit indicator to determine the time for tool change more precisely. This helps in reducing the fuel consumption and increasing the quality of soil. Therefore, the aim of this study is the development and application of a coating system with increased wear resistance compared to original OEM parts (Original Equipment Manufacturer) and integrated optical wear indication. Preliminary own tests demonstrated that arc-sprayed hard-facing coatings can increase the wear limit. Thus, in the current work two different types of thermal sprayed coatings are analyzed with regard to their wear resistance behavior. After positive wear test results, field testing on farmland was carried out. Further investigations concerned microstructure, optical as well as profilometry surface analyzes.
Tribology of Self-Fluxing Ceramic Coatings Prepared Using External Feeding Hybrid Plasma Spraying
Authors: Tesar Tomas , Musalek Radek , Lukac Frantisek , Walter Jan , Cvrcek Ladislav , Cech Jaroslav
Published: August 2024

Hybrid plasma spraying can be utilized to deposit novel coating microstructures by combining the simultaneous injection of a dry coarse powder and a liquid feedstock into the plasma jet. Using this approach, the coating microstructure contains both coarse powder-made splats and a dispersion of fine liquid-made splats. Furthermore, the so-called external feeding hybrid method allows the incorporation of fine particles of materials susceptible to decomposition at high temperatures thanks to the by-passing of the hot plasma jet and deposition of the temperature-sensitive material directly onto the coated surface from a suspension. In this study, microstructures of ceramic coatings with embedded self-fluxing sulfides were studied and the wear resistance of the system was evaluated using the dry sliding pin-on-disc method.
Analysis of Different High-Velocity Thermally Sprayed Coatings to Recover AISI H13 High-Pressure Die-Casting Molds
Authors: Mayer Andre R. , Sabino Eriel B. , Fals Hipolito D. C. , Pukasiewicz Anderson G.M. , de Oliveira Willian R. , Björklund Stefan , Joshi Shrikant
Published: August 2024

High-pressure die casting (HPDC) is a well-established manufacturing process used in the automotive sector to make high-precision components. The necessity to reduce fuel consumption increases the use of low-density components in the automotive industry. Corrosion induced by molten metal is one of many failure modes for dies, changing the die's geometry and surface roughness. All combined wear changes the dimensional precision of the manufactured parts but also the surface quality of the components. Many additive deposition methods are applied to decrease wear and recover the surface. Thermally sprayed coatings can improve the surface properties and recover the geometry of the die caused by the aluminum attack. The main objective of this work is to observe the behavior of the H13, Cr3C2-25NiCr, and WC10Co4Cr coatings deposited by HVOF and HVAF, tested against Aluminum corrosion and Die-soldering tests. After dissolution, the chromium carbide reacts with the aluminum, creating a tough intermetallic interface, and raising the extraction tensile stress. After Aluminum corrosion tests, it was observed that the WC 10Co 4Cr HVAF coating presented low adhesion to the aluminum with no observed coating failure due to the formation of intermetallic. Die soldering tests indicated that the WC 10Co 4Cr protects the substrate, resulting in lower extraction tensile stress than H13 base material and other HVOF coatings. It was possible to observe that WC 10Co 4Cr HVAF coating showed results comparable to AlCrN PVD coating.
Mold-Resistant Air Filters Embedded with Copper Particles
Authors: Pershin L. , Delage S. , Zhang M. , Ringuette M. , Mostaghimi J.
Published: August 2024

Air quality in buildings is often controlled by various Heating, Ventilation, and Air Conditioning (HVAC) systems. These systems are equipped with air filters to reduce dust and aerosol load in the air. Ambient aerosol particles may contain different organic matter such as pollen, bacteria, and fungi. In warm and humid indoor air conditions, the presence of such air particles may result in the growth and transmission of infectious bacteria, fungi, and mold spores.
Antibacterial Surface Coatings by Plasma Spray (APS/SPS) and Physical Vapor Deposition (PVD) Processes: A Comparative Approach
Authors: Youssef Laurène , Prorot Audrey , Gnodé Laurène , Maerten Thibault , Belvèze Simon , Acikgoz Canet , Manninen Noora , Rat Vincent , Vardelle Armelle , Denoirjean A.
Published: August 2024

An optimized powder/suspension based atmospheric Plasma Spray (PS) process, using a Triplex Pro 210TM torch, was implemented to elaborate Cu:TiO2 surface coatings on stainless steel. Nanometric Degussa P25TM powder was prepared in a water-based suspension and co-sprayed with a Cu spheroidal powder. The bacterial reduction, evaluated with 1h-exposure to Escherichia Coli (E. Coli), was two times higher for the Cu:TiO2 coating compared to the bare stainless steel substrate. Since the coatings obtained by plasma spray are relatively porous, their antibacterial efficacy was compared to smooth Ag and Cu doped titanium nitride (TiN) films obtained by physical vapor deposition technique (PVD). For the same exposure time, the PVD smooth coatings showed a much lower antibacterial efficacy proving the topography effect on bacterial adhesion.
Nozzle Geometry Optimization for Cold Spray Applications by Using 3D-CFD Calculations
Authors: Gutiérrez de Frutos J. , List A. , Gärtner F. , Klassen T.
Published: August 2024

In cold spray, optimum process conditions to accelerate particles vary with different densities and melting temperatures of the materials. Therefore, material-specific nozzle designs are required. In the present study, a nozzle geometry optimization concept based on 3D-CFD simulations was developed to provide a specific nozzle design for a given material. Al6061 and pure copper with mean particle diameters of 40 μm were taken as examples. Together with a design of experiments (DoE) approach, the model seeks for the optimal nozzle geometry. In order to reach the highest particle velocity prior to impact upon the substrate, different geometry parameters were varied, such as the nozzle throat cross section, the aspect ratio, and the nozzle divergent section length. The process gas was nitrogen with set stagnation pressure and temperature of 50 bars and 500 °C. For both materials, the simulation identified nozzle divergent section length as the most influential parameter, followed by the throat cross-section. The aspect ratio must be tuned to avoid over expansion of the gas in the nozzle.
Lightblast Laser Ablation Technology
Authors: Wanski Thomas , Herwig Patrick , Hauptmann Jan
Published: August 2024

The Fraunhofer Institute for Material and Beam Technology IWS in Dresden has developed “Lightblast,” a laser ablation technology for creating clean, structured surfaces. Lasers offer precision, reproducibility, cost-effectiveness, and environmental friendliness, opening new possibilities in surface treatment. Traditional blasting processes employ compressed air to propel abrasive particles at high speed onto a substrate. This method often results in embedded abrasive particles, surface contamination, and rapid abrasive wear, compromising process consistency. Additionally, the abrasive waste poses environmental and disposal challenges. Lightblast utilizes a continuous wave single-mode laser and a dynamic galvanometer scanner to precisely vaporize the substrate without abrasives. Adjustable parameters control the resulting surface roughness with high reproducibility. Unlike pulsed laser ablation, the continuous wave laser enables higher productivity due to increased power. Furthermore, Lightblast allows for selective surface structuring based on CAD designs without additional masking. Target applications include surface preparation for coating, bonding, and joining processes.
Evaluation of textural and sensorial properties of burger patties produced with plant-based protein alternatives
Authors: Yılmaz Eker Funda , Bayrakal Gülay Merve , Akkaya Esra
Published: August 2024

Recently, there has been a growing interest in alternative protein sources. This study aimed to determine the textural and sensory properties of vegan burger patties produced with plant-based (soy and pea) protein sources instead of meat protein. For this purpose, 14 different vegan burger patties produced with soy and pea-based protein alternatives were obtained from different brands in the İstanbul market. Burger patties were analysed in terms of moisture content, cooking properties, instrumental colour, texture profile, and sensory properties. According to the results, pea-based burger patties have a higher moisture content and cooking loss and a lower cooking yield than soy-based patties. The L* and a* values of the pea-based patties tended to be higher than those of the soy-based patties, while the b* values were generally higher. In addition, the texture profile analysis of soy and pea-based burger patties shows differences in texture attributes that may affect consumer preference and overall eating experience. In the sensory evaluation, a significant difference between soy and pea-based burger patties was observed only for juiciness and spicy taste characteristics. The research findings shed light on alternative proteins' textural and sensorial properties and their role in the food industry, particularly in developing vegan burger patties. These differences in sensory attributes and colour and texture analysis between soy and pea-based burger patties highlight the importance of ingredient selection and formulation in developing plant-based protein products.
Matrix Metalloproteinases and Collagen Propeptide in Interstitial Lung Diseases: Preliminary Results of a Pilot Study
Authors:   Central Tuberculosis Research Institute, Shchepikhin E.I. ,   Moscow, Russian Federation,   Central Clinical Hospital and Outpatient Clinic of the Department of Presidential Affairs of Russian Federation; Moscow, Russian Federation, Shepelkova G.S. ,   Central Tuberculosis Research Institute; Moscow, Russian Federation, Shmelev E.I. ,   Central Tuberculosis Research Institute; Moscow, Russian Federation, Yeremeev V.V. ,   Central Tuberculosis Research Institute; Moscow, Russian Federation, Ergeshov A.E. ,   Central Tuberculosis Research Institute; Moscow, Russian Federation,   Russian University of Medicine; Moscow, Russian Federation
Published: August 2024

Aim. To study the role of extracellular matrix metabolic products (matrix metalloproteinases 7 and 9, type III collagen propeptide) as potential non-invasive biomarkers of progressive fibrosis in interstitial lung diseases. Design. A cross-sectional study. Materials and methods. The study included 32 patients with interstitial lung diseases and 8 healthy volunteers. Based on the presence/absence of signs of progression over the previous 6 months, patients with interstitial lung diseases were divided into two groups. All patients underwent forced spirometry, body plethysmography, diffusion test, computed tomography of the chest, and study of serum concentrations of type III collagen propeptide and matrix metalloproteinases 7 and 9. Results. We found higher serum concentrations of matrix metalloproteinase 7 and type III collagen propeptide in patients with interstitial lung diseases than in healthy volunteers from the control group. There were no statistically significant differences in the levels of the studied biomarkers between patients with interstitial lung diseases depending on the progression of fibrosis. Conclusion. We have not obtained convincing data on the potential role of metalloproteinases 7 and 9, type III collagen propeptide as predictor markers of progressive pulmonary fibrosis. Further research is needed to determine the extent to which these markers can be used as diagnostic or screening tools in groups at greatest risk for interstitial lung disease, such as patients with systemic connective tissue diseases and familial forms of interstitial lung disease. Keywords: interstitial lung diseases, pulmonary fibrosis, collagen, type III collagen propeptide, matrix metalloproteinases 7 and 9, progressive fibrotic phenotype, biomarkers.
Penerapan UML Class Diagram dalam Perancangan Sistem Informasi Perpustakaan Berbasis Web
Authors: Ramdany Sandy
Published: August 2024

Perpustakaan merupakan komponen penting dari sumber belajar yang wajib dimiliki oleh setiap sekolah dan perguruan tinggi. Selain itu, perpustakaan juga berperan sebagai pusat informasi, sumber ilmu pengetahuan, dan tempat untuk melakukan penelitian. Di perpustakaan, terdapat berbagai proses seperti peminjaman buku, pengembalian buku, perpanjangan masa pinjam, dan pengadaan buku baru. Saat ini, proses pengembalian buku di perpustakaan menggunakan sistem barcode untuk menginput data buku yang dipinjam. Namun, seringkali terjadi antrian panjang saat pengembalian buku, jam operasional perpustakaan yang terbatas, serta keterlibatan petugas perpustakaan dalam proses pengembalian buku menambah kendala. Oleh karena itu, dibutuhkan sebuah sistem yang memungkinkan pengembalian buku tanpa bantuan petugas perpustakaan dan tidak tergantung pada jam operasional perpustakaan. Perangkat lunak telah dikembangkan untuk memverifikasi pengembalian buku, memberikan informasi tentang pengembalian buku, serta memberitahukan buku yang belum dikembalikan dan total denda yang harus dibayar oleh anggota perpustakaan.
Analisa Total Productive Maintenance Guna Meningkatkan Produktivitas Mesin Ekstrusi Type 2500 Menggunakan Metode Overall Equipment Effectiveness (OEE)
Authors: Muhazir Achmad , Sinaga Zulkani , Pratama Gusti Andhika Aji
Published: August 2024

Manufacturing industry companies are always faced with productivity, quality and delivery problems as demanded from customers, PT. XYZ is engaged in manufacturing various aluminum profile products during the 2020 period, the company experienced a type 2500 extrusion machine downtime of 9807 minutes, exceeding the company's standard of 7800 minutes a year, this is one of the causes of a decline in production. This study aims to determine the effectiveness of the machine using the OEE (overall equipment effectiveness) method, to increase the productivity of the type 2500 extrusion machine from the results of the six big losses analysis to identify the main cause of the downtime of the type 2500 extrusion machine. The results show that the overall equipment effectiveness measurement is obtained the average Avaibility Ratio presentation is 92.24%, Performance Ratio is 49.56% and Quality Rate is 99.72% so that the average overall equipment effectiveness value is 45.61% where this value is still below the average ideal value overall equipment effectiveness is 85%. The results of the measurement of six big losses obtained the results of downtime values: equipment failure losses 3.81%, setup and adjustment losses 3.95%, speed losses: idle and minor stoppage 3.03%, reduce speed losses 46.51%, quality losses: defect losses 0.13%, reduced yield 0% , from these data it is known that the main problem is in the speed losses section with the highest loss in reduce speed losses of 46.51%. The factors that dominate the main cause of downtime for the 2500 extrusion machine are log heater, puller, dummi block, loader, finish cut saw, stem, and table.
Identifikasi Non-Added Value Activity Dalam Proses Pemeriksaan Substantif Permohonan Paten Menggunakan Value Stream Mapping
Authors: Muslim Muslim , Ichwan Muhammad Nur , Ikatrinasar Ikatrinasar , Fitri Zulfa
Published: August 2024

The process of substantive patent examination which is complicated and takes a long time is one of the reasons the inventor is "reluctant" to apply for a patent on his invention. This research was conducted using the Current State Value Stream Mapping (CSVSM) method, which began with the creation of a process flow map with the cycle time of each activity. It is known that most of the activities are value added activities. However, there is 1 activity that is required but not added value, namely the activity of verifying the technical field of application documents; and 1 non-value-added activity, namely initialing the Patent Granting letter. The number of waiting/delaying incidents is a waste in the process of substantive examination of patent applications caused by: (a) employees generally do double work; and (b) the absence of SOPs in each sub-process/sub-activity in the process of substantive examination of patent applications. Proposed improvements are submitted in the Future State Value Stream Mapping (FSVSM). As a result, lead-time can be reduced to 11 days, which was originally 26 days; and Process Cycle Efficiency which was originally 19.23% increased to 45.45%
Analisis Risiko Proyek Pada Konstruksi Bangunan: Tinjauan Literatur
Authors: Yudhaningsih Kuntisari , Hughes Vegit Risana , Fitria Febriola Nova , Sumawati Utami Diyan , Purba Humiras Hardi
Published: August 2024

Risk is defined as an uncertain event or condition that, if it occurs, can have either a positive or negative effect on the project objectives. This effect can be avoided by using risk management methods, to identify risks, assessing risks either quantitatively or qualitatively, and choosing the appropriate method for handling risks will minimalized the effects. In the study, the scope was to identify the potential risk occurs on steel building work based on the previous research. Using sources based on the previous research, here will be identifying what types of risk factors are most commonly occurs for steel building work. The types of risk that will be discussed here will be divided into three types based on internal risk, external risk, and project risk. Each type of risk includes technical and non-technical risks. Based on the data this study identify that internal risk with technical aspects is the most common type of potential risk occurs on steel structure building work.
Analisis Manajemen Risiko pada Proyek Konstruksi Pelabuhan: Kajian Literatur Sistematik
Authors: Monalisa Monalisa , Amin Haidar Khoirul , Pratama Ardhani Agnas , Siswantoro Fery , Purba Humiras Hardi
Published: August 2024

The development of an infrastructure in the region can have the effect of increasing people's access to resources so that the increase in productivity can encourage economic growth. Ports as sea transportation infrastructure have a very important and strategic role for industrial and trade growth and are business segments that can contribute to the economy and national development because they are part of the chain of transportation and logistics systems. For this reason, a risk analysis is needed so that the implementation of port construction can be completed on time, in terms of cost, quality and time. This study aims to analyze the risk of port construction using a systematic literature review method. Based on research results, risk in port construction projects is influenced by external non technical (22.807%), technical project (21.053%), external technical (21.053%), internal technical (18.421%), internal non technical (8.772%) and non technical project (7.895%).
Kajian Literatur Pada Identifikasi Risiko Pada Pemeliharaan Gedung
Authors: Naluri Nike , Purba Humiras Hardi
Published: August 2024

Naturally there is no object made by humans that cannot be demagerd. and over time, there are many changes both physically and financially in the finished building but its useful life can be extended by carrying out regular repairs through an activity known as maintenance. . The purpose of this study was to determine the type of risk, location and year of research related to risks in building maintenance. The method used in this study is a literature review. 45 Journals obtained online from various sources with the keywords risk on building maintenance. From these journals, it can be concluded that the highest type of risk in building maintenance is internal technical risk and project technicality, where most research locations are carried out in Indonesia and the most research year is in 2020.
Optimalisasi Biaya Produksi Pengemasan Kopi dengan Metode Liniear Programming Menggunakan Software POM for Windows
Authors: Cipto suparman
Published: August 2024

PT TRB company which operates in the food and beverage industry is currently making efforts to obtain optimal production results with the aim of obtaining the best profits. The production process analyzed in this process is the main production process, namely the roasting and packing process. For volcanic tiger products, it can be calculated that the time required for the process takes 3 minutes and 2 minutes for the packaging process. For volcanic Komodo products, the roasting process takes 2 minutes. minutes and the packing process takes 4 minutes. The profit obtained by the company in producing volcanic tigers is Rp. 6,000 and a profit of Rp. 8,000 for the production of volcanic Komodo in profits per sachet. The results of calculations using manual methods and using POM for Windows software are the same, namely that 10,800 pcs of volcanic tigers must be produced. and 5400 pcs volcanic Komodo to get a profit of IDR 108,000,00.00
THE OFFENSE OF SHARING ELECTRONIC DOCUMENT DISSEMINATING ELECTRONIC DOCUMENTS CONTAINING DEFAMATORY INFORMATION
Authors: Harahap Faisal Sadat Soaduon , Siregar Dahris , Na’im Khairun , Sitepu Karolina
Published: August 2024

The rapid development of information technology has raised concerns about cybercrime and mayantara crime, which has an impact on various aspects of life. Therefore, people who communicate on social networks must have good ethics and interact well with others because their mistakes can result in criminal sanctions. This research aims to understand criminal offenses, sanctions, and legal considerations in the dissemination of defamatory electronic documents and information. Normative juridical is used by the author in this research which means using court decisions as the basis for solving problems. Secondary data is obtained from primary data used in this research. Data for this research was collected through literature research. Qualitative data was used for analysis. Dissemination of electronic information containing defamation or Article 27 paragraph (3) of the Electronic Information and Transaction Law regulates defamation. Defamation of private electronic information is a violation of the law. In Decision No. 978/Pid.Sus/2018/PT. MDN of the Medan High Court, the judge decided that the perpetrator of the criminal offence of disseminating electronic documents and information containing insults and defamation fulfilled the requirements of Articles 45 and 27 of the Electronic Information and Transaction Law, both including paragraph (3). This research concludes that the judge has applied the provisions of the Electronic Information and Transaction Law. Future research should conduct field research related to this field.
IMPLEMENTASI PENYIDIKAN TINDAK PIDANA ILLEGAL LOGGING DI WILAYAH KABUPATEN TOJO UNA UNA
Authors: Mardin Nurhayati , Haryanti Tuti , Nur Qalbi VIvi , Kharismawan Adiguna
Published: August 2024

Deforestation is a phenomenon that needs to be addressed seriously to preserve the environment. One of the causes of deforestation is illegal logging activities in forest areas. The purpose of this research is to examine the impact of illegal logging, analyze the law enforcement process against illegal logging perpetrators and analyse obstacles in the implementation of law enforcement against illegal logging in Tojo Una-Una Regency. The research method uses empirical juridical research by using a conceptual approach and a case approach. This research concludes that the investigation of the crime of illegal logging in the Tojo Una-Una Regency area is carried out by Investigators at the Tojo Una-Una Police Station and Civil Servant Investigators of the Sulawesi Regional Environmental and Forestry Law Enforcement and Security Centre and obstacles in the implementation of law enforcement come from technical obstacles such as the difficulty of the terrain that must be traversed to reach the forest area,  lack of facilities and infrastructure and lack of personnel at Tojo Una-Una Police Station and investigators of the Sulawesi Regional Environmental and Forestry Law Enforcement and Security Centre to carry out law enforcement duties against illegal logging crimes, as well as obstacles originating from the rule of law or legal substance, especially after the enactment of the Job Creation law.
PENGHENTIAN PERKARA DENGAN DENDA DAMAI PADA TINDAK PIDANA EKONOMI
Authors: Faharuddin Rizal
Published: August 2024

AbstractThis study aims to determine the application of peace fines by the Attorney General's Office in the settlement of economic crimes, as well as to find the concept of case termination with peace fines in economic crimes, using progressive legal thinking and restorative justice. The research method used is normative with statutory and comparative approaches sourced from primary data. The results showed that peace fines by the Attorney General in the settlement of economic crimes can be carried out based on Article 35 Paragraph (1) letter K of the Law of the Prosecutor of the Republic of Indonesia, this is an implementation of the principle of Opportunity and the position of the Attorney General as Dominus Litis which has permanent legal force. This is in line with the application of case settlement with the principle of restorative justice which prioritises victim recovery. The concept of case termination with a peace fine for taxation, customs, and economic crimes, is carried out with the principle of restorative justice, which is carried out by taking into account the interests of state revenue, there are no elements of corruption, and with the approval of the Attorney General by considering the impact caused by the criminal act, the costs and benefits of handling the case, as well as the guilty statement of the perpetrator and his willingness to pay a peace fine. The conditions for case termination are that the perpetrator is the first time involved in a criminal offence and there has been a restoration to the original state carried out by the perpetrator of the criminal offence.Keywords: Termination of case; peaceful fine; economic crime.
IMPLEMENTASI AJARAN DUALISTIS HUKUM PIDANA DALAM MENYELESAIKAN PERKARA PIDANA DI BIDANG KENOTARIATAN
Authors: Abdullah Ali , Subagyo Panca
Published: August 2024

Banyaknya permasalahan hukum yang melibatkan Notaris terhadap akta autentik yang dibuatnya menyebabkan Notaris berurusan dengan hukum pidana. Hukum pidana yang seharusnya digunakan sebagai upaya terakhir (ultimum remedium), namun pada praktiknya dijadikan sebagai pilihan utama (primum remedium), sehingga tidak ada perlindungan hukum terhadap Notaris dalam menjalankan jabatannya sebagai pejabat umum yang menjalankan sebagian kekuasaan negara di bidang hukum privat yang mempunyai peran penting dalam pembuatan akta autentik. Tujuan penelitian ini adalah menjawab implementasi ajaran dualistis hukum pidana dalam menyelesaikan perkara pidana di bidang kenotariatan. Metode penelitian yang digunakan adalah metode penelitian hukum normatif dengan bersumber pada studi pustaka/data sekunder. Data sekunder terdiri dari bahan hukum primer, bahan hukum sekunder dan bahan hukum tersier. Dari hasil penelitian ditemukan bahwa implementasi ajaran dualistis dalam menyelesaikan perkara pidana terhadap Notaris dalam menjalankan jabatannya masih minim diterapkan oleh hakim (pengadilan). Hakim masih memandang bahwa Notaris yang melakukan perbuatan sesuai rumusan tindak pidana (actus reus) layak dipidana, tanpa mempertimbangkan keadaan batin (mens rea) sebagai unsur kesalahan Notaris. Sehingga dalam hal ini tidak ada pemisahan antara perbuatan dengan pertanggungjawaban pidananya.
PENDEKATAN RESTORATIVE JUSTICE DALAM PENYELESAIAN PERKARA TINDAK PIDANA PENCEMARAN NAMA BAIK DI MEDIA SOSIAL
Authors: Salamiah Salamiah
Published: August 2024

Penelitian ini bertujuan untuk mengkaji penyelesaian tindak pidana pencemaran nama baik di media sosial melalui pendekatan Restorative Justice. Pencemaran nama baik di media sosial sudah menjadi fenomena yang marak di era digital saat ini. Dampak negatif pada tindakan tersebut bukan hanya merugikan korban, tapi juga dapat menimbulkan keresahan pada masyarakat. Dalam perkara ini pendekatan Restorative Justice (RJ) dapat menjadi sebuah solusi karena didalamnya memberikan suatu penawaran alternatif dalam menyelesaikan suatu perkara yang lebih fokus pada rehabilitasi dibandingkan retaliasi. Restorative Justice dapat memberikan solusi terbaik dalam menyelesaikan perkara pidana perdata antar perseorangan (natuurlijkepersonen) atau badan hukum (recht personen), yaitu dengan mengutamakan pokok permasalahan kejahatan tersebut. Hasil penelitian menunjukkan bahwa penyelesaian tindak pidana pencemaran nama baik melalui pendekatan restorative justice dapat menyeimbangkan perlindungan hak dan martabat seseorang sebagai konsep pemidanaan yang bertujuan untuk mencari cara untuk menegakkan sistem pemidanaan yang lebih adil dan seimbang.
Notes on Melolonthinae (Coleoptera: Scarabaeidae) from China: a new species of the genus Miridiba and new records
Authors: Wang F.-L.
Published: August 2024

A new species of the genus Miridiba Reitter, 1902, M. yingjiangensis sp. nov. , is described from the Yunnan Province, China. The genera Laotrichia Keith, 2007 and Siamophylla Keith, 2005, along with the species L. cuccodoroi Keith, 2007 and S. grootaerti Keith, 2005 are recorded from China for the first time. Six species of the subfamily Melolonthinae are also recorded from China for the first time: Cyphochilus obscurus Sharp, 1876, Lepidiota acuminatops Prokofiev, 2015, Lepidiota cochinchinae Brenske, 1894, Malaisius siamensis Li et Yang, 1999, Malaisius mollis Arrow, 1941, and Pedinotrichia magna (Itoh, 1995). The female of M. mollis is described and illustrated for the first time.
Proyectos de Aprendizaje Servicio en la Universidad bajo el enfoque de Enseñanza en cadena y su proyección social
Authors: López Ruiz Manuel José
Published: August 2024

Introducción: La enseñanza en cadena nos ofrece la oportunidad de formar simultáneamente a más de un grupo social. Las universidades disponen de metodologías activas para hacer realidad este tipo de experiencias formativas.  Metodología: Este artículo presenta como, bajo el enfoque de aprendizaje servicio en cadena, el alumnado universitario diseña e implementa proyectos de alto valor social. Lo que pretende es favorecer una contribución social de la universidad a su entorno. El alumnado universitario, además de ejercer su papel discente, se convierte en un agente formador a la vez que asimila las competencias propias de la materia de estudio. Resultados: Los resultados evidencian las posibilidades de este tipo de actividades formativas, con una alta valoración por parte del alumnado implicado,  un amplio despliegue competencial y con resultados académicos muy importantes y, sobre todo, un fortalecimiento del papel social de la universidad. Discusión: Se confirman los resultados obtenidos en otros proyectos desarrollados en otras universidades. Conclusiones: Desde el departamento creemos que esta debe ser la línea metodológica a seguir en años venideros.
Premio Gabo: el periodismo que están haciendo las mujeres entre América Latina y la Península Ibérica
Authors: Robledo-Tangarife Juan José , Rubira-García Rainer
Published: August 2024

Introducción: A 30 años de su creación, la Fundación Gabo, concebida por el periodista y Nobel de Literatura Gabriel García Márquez, se ha convertido en un faro de ética y periodismo de calidad en Iberoamérica. Metodología: A través de los finalistas de la categoría de texto del Premio Gabo de 2013 a 2023, analizamos la producción de las mujeres periodistas de la región. Se identificaron las temáticas abordadas, los enfoques, el estilo narrativo, los medios en los que publican y las dificultades enfrentadas. Resultados: Los trabajos seleccionados destacan por el asombro, resiliencia, compromiso, rigor y empatía. La mirada de la mujer periodista actúa como un zoom, descubriendo y acercando realidades previamente ausentes en la agenda informativa. Discusión: A pesar de las diferencias de contexto, los lazos históricos, culturales y periodísticos entre la Península Ibérica y América Latina revelan una mirada común en la manera de narrar el mundo. Las mujeres periodistas aportan perspectivas únicas que enriquecen el panorama informativo. Conclusiones: La Fundación Gabo y el Premio Gabo han sido cruciales para visibilizar y valorar la contribución de las mujeres periodistas en Iberoamérica. Su labor no solo enriquece el periodismo de la región, sino que también introduce narrativas y enfoques novedosos que desafían y amplían las agendas informativas tradicionales.
Entre lo ilegal y lo permitido. La emigración ceutí en América, el caso de Manuel Coello el Africano y Antonio de Leiva
Authors: Romero-Sánchez Guadalupe
Published: August 2024

Resumen: Introducción: Las relaciones entre Ceuta y América han sido atendidas de forma muy puntual desde la literatura científica, no obstante, se vislumbra como una de las líneas de investigación más interesantes y versátiles. En este estudio realizamos una aproximación al estado de la cuestión y a las posibilidades de análisis que brindan los archivos históricos, centrándonos en el Archivo General de Indias. Metodología: Se ha realizado un análisis y una clasificación de los fondos de este archivo en relación al ítem “Ceuta”. Posteriormente, y siguiendo una línea analítica-descriptiva, se han analizado dos legajos correspondientes a Manuel Coello el Africano y Antonio de Leiva. Resultados: El análisis documental nos ha permitido comprobar que la fecha establecida para la legalización de la emigración ceutí fue la de 1640, tras su anexión definitiva a España. Discusión: Esta investigación es una apuesta decidida por el estudio de las relaciones históricas y culturales entre Ceuta y América, sentándose las bases para un proyecto de investigación que permitirá hacer una valoración más completa de esta realidad. Conclusiones: De los 114 expedientes revisados hemos atendido dos casos que ejemplifican dos modelos de emigración a Indias, la ilegal y la oficial, permitiendo explorar nuevas vías de análisis.
‘AGalega.gal’: impacto de una plataforma over the top gratuita en gallego en la distribución de contenido del género Galician Noir
Authors: Villanueva Villanueva Silvia
Published: August 2024

Introducción: En las últimas décadas, Galicia se ha convertido en un plató cinematográfico con género propio, el Galician Noir. Tras el reciente lanzamiento de la plataforma over the top en gallego ‘AGalega.gal’, nace del interés por analizar su impacto en la distribución del mismo. Metodología: Examen documental de artículos periodísticos, publicaciones en Instagram, funcionamiento de la plataforma ‘AGalega.gal’ y una encuesta a 30 profesionales del sector audiovisual y 30 usuarios sin formación audiovisual específica, con el fin de esclarecer el impacto del nacimiento de esta herramienta de distribución en la difusión de contenido con el sello Galician noir. Resultados: Se pudo comprobar que ambos perfiles de encuestados comparten una mayor inclinación de consumo de productos audiovisuales del género Galician Noir tras la difusión en redes sociales de piezas o textos promocionales relacionados con la apertura de la plataforma ‘AGalega.gal’. Discusión: Si bien el nacimiento de este medio de distribución gratuito ha sido aceptado positivamente, cabe destacar que el grupo consultado reclama mejoras de funcionamiento y un aumento en el catálogo. Conclusiones: Se corrobora la hipótesis inicial, en la cual se une un posible aumento en el consumo de productos audiovisuales del género Galician Noir al lanzamiento de la plataforma ‘AGalega.gal’.
Поділля у період Гетьманату 1918 р.: консервативна модель внутрішньополітичної стабілізації
Authors: Калитко Сергій , Кравчук Олександр
Published: August 2024

The article is an analysis of the domestic policy of Pavlo Skoropadskyi's Hetmanate in Podillia in 1918, analyzing its impact on the socio-political and economic situation in the region. The article examines the main problems faced by the local administration, including agrarian reform, maintaining law and order, the attitude of the population to the new government, and the challenges posed by peasant resistance and political opponents. Particular attention is paid to the activities of local starostas, their role in stabilizing the region, and the limited possibilities of their influence on the situation due to insufficient support from the security forces. The article offers a new perspective on the little-studied aspects of Hetman's policy in the Podillia region and its consequences for Ukrainian statehood during the liberation struggle of 1917-1920.
Політика німецької окупаційної влади стосовно використання робочої сили із загарбаних східних територій у початковий період війни
Authors: Гальчак Сергій
Published: August 2024

The article analyzes the evolution of the Third Reich's policy of using labor from Ukraine and other occupied territories of the USSR in the militaristic economy of Nazi Germany. Particular attention is paid to the analysis of changes in approaches to the involvement of prisoners of war and civilians in the Reich, as well as the motivation for decisions made against the backdrop of the deteriorating military and economic situation. The author reveals previously unknown aspects of the Nazi plans to use labor resources from the occupied territories and highlights the conditions of their existence in Nazi slavery.