bluuebunny/crossref_metadata_2025 huggingface dataset:
La elección 2024: el perfil de la lista nominal y las preferencias electorales
Authors: Hernández Bringas Héctor
Published: January 2025

En la víspera del proceso electoral 2024 en México, resulta pertinente conocer algunos de los aspectos más relevantes de la lista nominal de electores, relación integrada por aquéllos que tienen el derecho efectivo a votar. Además de conocer algunos aspectos acerca de cuántos y quiénes conforman la lista nominal, proponemos analizar cómo los grupos que lo conforman (sexos, edades, regiones) se han comportado en el pasado reciente en términos de participación y preferencias electorales y, en función de ello, preguntarnos si es posible esperar una conducta similar o distinta en el actual proceso, particularmente en lo referente a la elección de la presidencia de la República.
Improving the tensile properties of 3D printed PLA by optimizing the processing parameter
Authors: Nugroho Aris Widyo , Budiantoro Cahyo
Published: January 2025

Low-cost desktop 3D printing is now dominated by free and open source self-replicating rapid prototype. However, optimum printing process parameters have not been provided by the manufacturer, since there are several process parameters that need to be optimized to obtain acceptable dimension error and strength properties. This paper aims to present the optimum process parameters for the 3D printing process of Polylactic Acid (PLA) part using Taguchi Method. A specimen standard of ASTM D638 Type IV made of biodegradable polymer, PLA, has been used as a tensile strength test to represent printed part quality. Four printing process parameters: temperatures, extrusion width, infill density and infill pattern have been optimized using Taguchi Methods.  Test was carried out to find the highest tensile strength based on the optimum parameter setting and validated them with experiment. The result shows that the tensile strength response was predominantly influenced by infill density followed by nozzle temperature, infill pattern and extrusion width.  The optimum level setting was obtained at 75% of infill density (C3), 215oC of nozzle temperature (A3), honeycomb infill (D1) and 0.3 mm of extrusion width (B1). At optimized parameters the tensile strength PLA parts significantly was found of 30.52 MPa at a confidence interval of 95%.
Analysis of the Mixture Fuels to the Performance of Diesel Engine
Authors: Winoko Yuniarto Agus , Arifin Indra Nurzainu , Ro'isatin Umi Anis
Published: January 2025

The demand for fuel is increasing every year that the supply comes to decrease. Biodiesel is an alternative energy for diesel fuel. It has the same characteristics as diesel fuel. It also renewable and environmentally friendly. The mixture of biodiesel and diesel fuel lessens the concentration of hydrocarbons and increases the cetane value. Therefore, combustion occurs completely. The purpose of this research is to compare the power, SFC and exhaust emission of direct injection engines with B-20 fuel to those with diesel fuel. The method to test the engine power uses ISO 1585 where the engine speed range starts from 1000-4000 rpm. The test results show that the engine has better performance when it uses mixture fuels but it is not for the engine with diesel fuel. The mixture fuels give higher power to the engine, but less emission. It is the opposite of the engine with diesel fuel, even though the difference in power is slight. It can be concluded that the mixture fuels influence the performance of direct injection engine.
Design of Hybrid Smokeless Waste Burners Machine for Producing Organic Fertilizer
Authors: Riyadi Sugeng , Setaji Yogi , Pamekas Hansyah Faisal , Setiawan Reza
Published: January 2025

The number of waste problems in Karawang are increasing but the handling is still limited. Every day, the Karawang community produces 920 tons of garbage. Of that amount, 400 tons of waste is sent to TPSA in Jalupang, while 520 tons of the remaining garbage is scattered everywhere. Overcoming the waste problem, it is necessary to have an environmentally friendly tool for direct burning of waste that can’t be recycled again. Hybrid Smokeless Waste Burners Machine (HSWBM) is an environmentally friendly technology by burning smokeless waste through smoke filtering using water or water scrubbers and using Hybrid technology by using electricity independently from solar panels and PLN electricity which is only used when weather conditions don’t. The method used is the design of tools, and component assembly. HSWBM has an environmentally friendly advantage because it uses smoke filtration through water and dangerous gas filtration so that the discharged gas is more environmentally friendly, electricity is independent of solar panels thus saving the operational costs of the tool. The remaining combustion or ash can be used as organic fertilizer or briquettes. Deposition of smoke in water (aerosols) for a mixture of fertilizing agricultural crops and reducing waste in Karawang so that a clean environment is created. The application of the use of this tool on a limited scale such as in schools, campuses and housing in Karawang.
Study the durability of welding and performance of base metal of L. P. G. home cylindrical manufactured in Kurdistan region.
Authors: Ahmed Yassin Mustafa , Lafta Hameed D. , Abdulrahman Azhin Abdullah
Published: January 2025

Liquefied petroleum gas (propane or butane) is a colorless liquid which readily evaporates into a gas. It has no smell, although it will normally have an odor added to help detect leaks. Liquefied petroleum gas is stored and handled as a liquid when under pressure inside an LPG cylinder. Liquefied petroleum gas cylinders are subjected to various tests to ensure their compliance requirements as per standard. This research studies the durability of welding and performance of base metal of L. P. G. home cylindrical in Kurdistan region. The experiments were carried out on three types of LPG cylinder using in Kurdistan regions A, B, and C and an unformed plate. To carried out the samples and tests during the research we depending on the standard tests for LPG cylinders. Three samples are extracted from each of LPG cylinders and unformed plate for each of tensile test, Bending test and Hardness test according to ISO 6892-2016 and ASME standards from each type of LPG cylinders and from unformed plate to examine the mechanical properties. In addition, chemical compositions also were carried out. These values are compared with standard.
Analysis of Pressure Laboratory Scale Swing Adsorption (PSA) Varian Design using Zeolite 13X as Adsorben Medium
Authors: Satria Dhimas , Kurniawan Teguh , Lusiani Rina , Listijorini Erny , Rosyadi Imron , Salman Nidya Jullanar
Published: January 2025

The demand of high quality of oxygen increases, especially in the middle of covid -19 pandemic. The importance recentl is using technology and material to improve the quality of oxygen. Therefore a study was conducted which aim to obtain the best varian on concept desain concept analysis of pressure swing adsorption (PSA)  which utilize adsorption material of sintetic zeolite 13x. the method used is Quality Function Deployment (QFD) which is information collecting about the need and the willingness of users. The steps carried out to obtain the best variant design concept of pressure swing adsorption are as follow: requirement list determination, priority scale determination, house of quality making, PSA specification determination, design concept and the best variant determination. The result obtained is the selected the best variant which was 10th variant because it has been fulfilled the requirement the specification list because this variant when PSA was used is bed or column type is single bed with the capacity of zeolite of 13X 2 – 2,5 kg, the valve mechanism is manual so that it need no automatic control system, the electricity source was from PLN and need no accumulator and the product of )2 using 1 single tank which is simpler.
Pitch ratio effect on the effectiveness of condenser for essential oil distillation
Authors: Titahelu Nicolas , Latuny Jonny , Tupamahu Cendy Sophia Edwina , Sarwuna Sefnath Josep Etwan
Published: January 2025

This research is focused on the usage of the helical coil pipe to shorten the distillation time which then aimed to obtain a helical coil pipe condenser configuration with an effective pitch ratio to shorten the distillation time. The pitch ratio value is varied from 2.10 to 4.20. The experimental results show that the effectiveness of the condenser decreases as the pitch ratio increases, where the maximum effectiveness at the pitch ratio of 2.10 is 74.13%, while the minimum pitch ratio of 4.20 is 67.19%. The maximum effectiveness is obtained at a pitch ratio of 2.10 due to a larger heat transfer contact area which results in an increase in the actual heat transfer as well. The experimental results with a pitch ratio of 2.10 obtained a condensate temperature of 37.29 °C which is 22.71 °C and a distillation time of only 2 hours compared to the results of the straight pipe condenser used by the SME group. The effect of the helical coil pipe pitch ratio obtained from the experimental results with a mean deviation value of 2.81% compared to the numerical study. It is concluded that the maximum condenser effectiveness is at the minimum pitch ratio value and then the pitch ratio of 2.10 can be used for the clove essential oil distillation process.
Online Blade Washing Analysis on Mitsubishi M701F Gas Turbine Performance in Power Plants
Authors: Wilarso  , Ari Dwi Wibowo
Published: January 2025

The main problem that often occurs in the operation and maintenance of power plants is a decrease in the reliability of the Gas Turbine. The decline in the performance of the Gas Turbine, which often experiences trips, was recorded at the highest 3 times in one day. Based on the inspection, it was found that there were deposits on the compressor and turbine blades during operation. The decrease in power in the generating unit is accompanied by an increase in fuel consumption. The purpose of this study is to analyze Blade Washing Online on the performance of gas turbines due to the formation of carbon deposits on the compressor wheel and turbine wheel. To improve the reliability of the gas engine, a method of doing Blade Washing is needed to clean carbon deposits in the compressor and turbine wheel. Based on the results of research before Blade Washing the turbine power only reached 255.37621 MW, after Blade Washing was able to make the compressor work more reliably, produce good turbine gas efficiency, and be able to reduce turbine gas performance disturbances due to running hours the power generated reached 268,77738 MW, there is a fuel consumption savings of 1.4 kg/s and thermal efficiency of 0.8%. In the Tanjung Priok Block 3 PLTGU unit, Online washing is carried out at a load condition of 200MW ±5MW. To clean fouling and maintain the performance of the turbine. Cleanliness of the compressor and turbine blades can be maintained by carrying out this blade washing based on a periodic schedule calculated based on running hours.
Flow Rate Effects on Microstructure and Mechanical Properties for Titanium Weld Joint
Authors: Sari Dewi Puspita , Arifin Amir , Gunawan Gunawan , Adanta Dendy , Asura Ihsan , Syofii Imam
Published: January 2025

Titanium is a metal with a low density, has good heat transfer, and a high melting point; hence widely used for various purposes, such as petrochemicals, aerospace, medical, and reactors. The titanium welding process is complicated because no absence of protection against air during the welding process results in the high absorption of oxygen from free air. In this work, ASTM Gr-1 Titanium is joining using Tungsten Inert Gas (TIG) welding method. The effect of argon flow rate on the mechanical properties of titanium welding and its microstructures is investigated by hardness and tensile tests. Then, microstructure observation to explore the fusion zone and heat-affected zone. Furthermore, phase formation during the welding process is analyzed using the X-ray diffraction (XRD) method. The tensile test revealed that maximum tensile strength was obtained at a 60 l/m argon flow rate while minimum tensile strength was received at 25 l/min. The hardness test shows that maximum hardness was obtained at 25 l/min on the fusion zone.
study fluid analysis of a new blowdown pump sealing line
Authors: Muhammad Raihan
Published: January 2025

The sealing system is used on the pump as a sealing medium between a stationary object (the pump casing) and a rotating object (shaft), maintains the shaft temperature, and keeps the fluid not in or out of the system. The blowdown pump in Priok Combined Cycle Power Plant (CCPP) used service water as a medium for the sealing system because potential seawater will contaminate the pumped water. In this case, the authors observe a blowdown pump, one of the pumps in the desalination system that pumps the seawater. There is no potential for contaminating fluid systems by sealing water because the fluid contains many salts and is thrown directly into the ocean. This project is to replace the water sealing using seawater as a sealing system on the blowdown pump will not harm the system because the fluid system is carried out. This research can reduce the use of water service by as much as 1142 liters per day for 2 desalination plants because the discharge water used sealing each desalination unit is 23,79 liters / hour / desalination.
Systematic literature review supported VOSviewer: Geothermal energy as an alternative energy in Indonesia
Authors: Anisa Ayu Solikah  , Sulistyo Saputro  , Sentot Budi Rahardjo
Published: January 2025

The need for electricity in Indonesia is still high due to its population and large area. However, power plant fuels such as coal are less able to meet the electricity needs in the community. This is because the amount of coal is running low and cannot be renewed. To overcome this, the government focuses on developing power plants from alternative energy that is new renewable so that it will not run out. To achieve this goal, studies are needed that can inform the public and researchers in the future. The study of geothermal energy as an alternative energy for power plants in Indonesia from 2013-2023 aims to provide information and analysis related to obtain: 1) the principle of changing geothermal energy into electrical energy. 2)The use of geothermal energy in the world today. 3)The research on the use of geothermal energy so far in Indonesia? 4) The potential of geothermal energy as an alternative power plant for Indonesia? The research on the use of geothermal energy so far in Indonesia through literature review and supported by VOSviewer, 5) The challenges and solutions in developing geothermal energy as an alternative to power generation in Indonesia.
Parametric optimization technique for continuous and combinational problems based on simulated annealing algorithm
Authors: Irawan Yosua Heru , Lin Po Ting
Published: January 2025

Simulated annealing is an optimization method adapted from the annealing process. The optimization process using simulated annealing method is done by mapping the elements of physical coolant process onto the elements of optimization problem. This method uses local neighborhood search to find solutions, meaning it searches around it for answers itself and takes another solution based on everything around it. The simulated annealing method has been used successfully for the optimization process in the continuous case (Himmelblau’s function) and combinational case (Quadratic Assignment Problem or QAP). Based on the optimization results (global minima) for the Himmelblau's function, the points  and   are obtained with objective function . The optimal solution for the eight departmental arrangements is F, E, A, G for the bottom floor and H, D, C, B for the top floor, this arrangement produces an optimal total cost of 214. The simulated annealing method accepts an uphill move (worse move) by considering the probability, in this way we will not be trapped in the local minima position. These four search space variables  and  determine the performance of the simulated annealing method, we can adjust them according to the optimized case.Simulated annealing is an optimization method adapted from the annealing process. The optimization process using simulated annealing method is done by mapping the elements of physical coolant process onto the elements of optimization problem. This method uses local neighborhood search to find solutions, meaning it searches around it for answers itself and takes another solution based on everything around it. The simulated annealing method has been used successfully for the optimization process in the continuous case (Himmelblau’s function) and combinational case (Quadratic Assignment Problem or QAP). Based on the optimization results (global minima) for the Himmelblau's function, the points  and   are obtained with objective function . The optimal solution for the eight departmental arrangements is F, E, A, G for the bottom floor and H, D, C, B for the top floor, this arrangement produces an optimal total cost of 214. The simulated annealing method accepts an uphill move (worse move) by considering the probability, in this way we will not be trapped in the local minima position. These four search space variables  and  determine the performance of the simulated annealing method, we can adjust them according to the optimized case.
Utilization of coconut fiber and corn cob waste as noise reducers
Authors: Maghfiroh Amalia Ma'rifatul , Farahdiansari Ardana Putri
Published: January 2025

Noise is a very disturbing problem in residential, office, educational, industrial and other environments. Noise can be reduced by using materials that can dampen and absorb sound. The sound dampening materials that are widely used by the public generally use glasswool and rockwool, but they are expensive. The more expensive the price of goods including sound absorbers, the more alternatives are needed by utilizing materials derived from nature which are easy to obtain and cheaper, besides that by utilizing existing natural fibers it can also reduce waste in the surrounding community. One example of utilizing waste from natural fibers is making composites using coconut fiber and corn cobs. Composite materials made from coconut coir fiber and corn cob are alternative sound absorbing materials that are environmentally friendly, easily available and inexpensive. The aim of the research was to obtain an optimum composition ratio to produce composites as environmentally friendly sound absorbing materials, to determine the value of the sound absorption coefficient (α) from the manufacture of coco fiber and corn cob composites as noise dampening materials. From the research results it can be concluded that the sound dampening ability results show varying values ​​for each test specimen. The highest incoming sound/energy is 94.4 dB at a frequency of 500 Hz while the lowest incoming sound/energy is 44.14 dB at a frequency of 125 Hz. Meanwhile, the highest sound/absorbed energy (mean value) was 37.7 dB at a frequency of 750 Hz in sample C, while the lowest sound/absorbed energy was -6.16 dB at a frequency of 4000 Hz in sample A.
 
Keywords: composites, noise, sound absorbing materials
Comparative analysis of solar panel output power with variations of Heatsink type cooling systems
Authors: Handayani Dwi Yulia , Julian James , Wahyuni Fitri , Naufal Ridwan Daris
Published: January 2025

The heatsink is installed on the back sheet of the solar panel in the form of a fin so that the air under the solar module helps the heatsink perform cooling. Temperature testing uses a thermocouple temperature sensor at several calibrated points, taking volt and current data using a multimeter. The results of this test obtained a deviation comparison value between solar panels without a heat sink and using a heat sink of ±1%. So, the similarity of deviation values from the research is used as a control variable. From all the data that has been taken, using heat sinks on solar panels can reduce excess heat in the solar panel modules. The heat transfer that occurs in this experiment is by conduction and convection. The heatsink's good performance in releasing heat with high power output can be seen at 12.25 because the resulting thermal efficiency is related to the power released at the same time. The thermal efficiency value is 20.88%, and the power increase is 19.31%.
Future prospective of bioethanol production from sugar palm sap
Authors: Mustofa  , Hariadi
Published: January 2025

The availability of fossil fuels is decreasing along with increasing environmental temperatures due to their use. Therefore, there is a need for other alternatives to overcome this problem, such as the use of bioethanol as an environmentally friendly renewable energy. This research was aimed to identify the potency of sugar palm (Arenga pinnata Merr) sap as a feedstock for bioethanol production. Two major aspects of the identification focus were the feedstock availability and the bioethanol production process. The feedstock identification was conducted by surveying the industry of sugar palm and collecting data of the volume of sugar palm sap. Then, the production process of bioethanol as final product was conducted in four stages. They are characterization of samples, pasteurization, fermentation, and distillation. The results show that sap samples collected from the farmers have pH = 3.1-3.2, density 0.96 gr/mL, and carbohydrate content 1.51%, respectively. Sugar palm sap was fermented with 0.03 m/v fermentation agent of yeast within 72 hours. After the fermentation process, the sugar palm sap contains 1.51% carbohydrates, 74% alcohol, and 63.96% ethanol. Furthermore, the distillation temperature of 78-80oC resulted in a 7.44% v/v ratio of extract amount from the total volume of the distillation results. The bioethanol quantity can be increased by considering the process, especially during the fermentation.
Effect of airflow rate and honeycomb channels addition on the efficiency of bagasse-fuelled top-lit updraft (TLUD) gasification stove
Authors: Sholeha Clarissa Putri , Trifiananto Muhammad , Darsin Mahros , Sanata Andi , Sholahuddin Imam , Anindito Ariyo
Published: January 2025

The use of Liquefied Petroleum Gas (LPG) fuels has increased over time and has triggered the innovation of renewable fuels that do not affect the environment. This renewable fuel is biomass. Biomass is derived from organic materials of plants or animals that can be used as fuel. The conversion of biomass into thermal energy using gasification stoves can increase thermal efficiency up to twice that of conventional biomass combustion. Common stoves that use nowadays is Top-Lit Updraft (TLUD) gasifier that easy to optimize. This type of gasifier has a simple design and can be fuelled with any type of biomass with a water composition of less than 20%. Gasification stoves have so far been developed using various biomass fuels, one of which is bagasse waste. Bagasse is also easy to obtain in Indonesia because it has an abundant number of quantities. In addition to the fuel aspect, the ability of the gasification stove to produce good thermal efficiency depends on the stove design, such as stove type, stove dimensions, and combustion airflow rate. It is tested with the water boiling test method using variations of airflow rate of 2 m/s, 3.5 m/s, 5 m/s, and 6.5 m/s and honeycomb channels addition. As a result, it reached 30% thermal efficiency.
effect of tapioca starch concentration on mechanical properties of Sansevieria Trifasciata fiber-reinforced composites
Authors: Misbakh  , Widodo Edi , Siti Aisyah Iis , Syahruddin  , Ariffin Nur Haizal
Published: January 2025

This research investigates the impact of varying concentrations of tapioca starch (Manihot esculenta) on the mechanical properties of composites reinforced with Sansevieria trifasciata (Lidah mertua) fibers. The composites were fabricated using the hand lay-up method with SHCP 2668 polyester resin, mekpo catalyst, and alkali-treated fibers (5% NaOH). The fiber weight fraction was 30%, and the catalyst weight was 10% of the total specimen mass. The tapioca starch concentrations were 0%, 10%, 20%, 30%, 40%, and 50%, with a total matrix mass of 50 grams. Mechanical properties were evaluated through tensile tests (ASTM-D3039) and bending tests (ASTM-D790). The results indicated that composites with added tapioca starch exhibited improved tensile strength and a higher modulus of elasticity. However, for bending tests, the composites without added tapioca starch demonstrated better performance, showing a higher elastic modulus and better flexibility. In conclusion, adding tapioca starch enhances the tensile strength of the composites, making them stronger. Conversely, for bending applications, composites without tapioca starch are preferable due to their superior elasticity and bending strength.
Modeling and simulation of magnet-coil arrays for vibrational energy harvesting in agricultural electric vehicles
Authors: Divine Kobbi Mbanwei , Alombah Njimboh Henry , Ngwabie Ngwa Martin
Published: January 2025

Electric vehicles have advantages such as reduced maintenance and fuel costs compared to internal combustion engines. However, their limited driving range still hinders their widespread adoption compared to internal combustion engines. Harvesting wasted energies through vibrations in electric vehicles is a good approach to complement the energy of their batteries. Space constraints in electric vehicles require devices with high power output per unit volume. This study aimed to design a novel vibration energy harvesting using the geometrical model for electric vehicles. Different configurations and their performance in maximum flux linkage, electromagnetic coupling coefficient, induced voltage, and generated power were investigated. The modeling, excitement, and analysis were conducted using ANSYS Maxwell software with four configurations under similar conditions. These were the Halbach array with three magnets, one coil, and flat back shield; the Halbach array with three magnets and one coil with a stepped back shield; the double magnet array with two magnets, one coil, and flat back shield; and the fourth one was a double magnet array with two magnets, one coil and stepped back shield. The MATLAB Simulink software was used to obtain further results and power output analysis. The results of the analysis show that the Halbach array with three magnets, one coil, and a stepped-back shield is the best configuration for harvesting energy from vibrations, producing an electromagnetic coupling coefficient of up to 110 Wb/m, a voltage of up to 36 V, and generated power density of 0.13 W/cm. A reasonable increase in output using less volume was obtained compared to the other studies. The energy harvested will be applied in future studies to extend the range of agricultural electric vehicles, reducing farmers’ income spent on fuel and maintenance.
Suggestions for Reporting Items in Case Reports on Traditional Korean Medicine Treatments for Coughs: A Literature Review of Case Studies
Authors: Gu Doeun , Song Eunjae , Kim Kwan-Il , Jun Hyungsun , Uhm Jungah , Hong Sungduk , Park Dasol , Leem Jungtae
Published: January 2025

Objective: This study aimed to summarize the reporting items for case reports on coughs in Korean medicine.Methods: Case reports and retrospective chart reviews on coughs using Korean medicine were selected from KISS, RISS, and OASIS. Studies were classified by underlying diseases, and clinical settings, diagnostics, and assessment tools were extracted. The quality of the included studies was assessed using the CAse REport (CARE) guideline and Joanna Briggs Institute (JBI) checklist. A checklist of diagnostic and clinical evaluation items was created.Results: A total of 57 articles were included and categorized by etiology, including infections, post-COVID-19 conditions, aftereffects of respiratory infection or treatment, chronic respiratory disease, gastrointestinal causes, idiopathic causes, tumors, and unreported causes. The use of objective biomarkers or subjective evaluation tools varied by underlying disease. The included studies were found to be well reported, except for items on adverse events and informed consent.Conclusion: This study presents a preliminary checklist for case reports on coughs in Korean medicine, aiming to enhance clinical reproducibility and support data collection for broader research applications.
Suggestions for Reporting Items in Case Reports on Traditional Korean Medicine Treatments for Heart Diseases and Coronary Artery Diseases: A Literature Review of Case Studies
Authors: Park Jimin , Heo Minseon , Jun Hyungsun , Jin Hyowon , Park Dasol , Leem Jungtae
Published: January 2025

Objective: This study aimed to propose a summary of reporting items for case studies on patients with heart and coronary artery disease in Korean medicine.Method: Reports were selected from three Korean databases using keywords related to heart and coronary artery disease. Tools for clinical evaluation, treatment duration, and follow-up period were extracted. A summary of the reporting checklist was presented, with input from methodology experts and clinicians. Quality assessments of the case reports were performed using the CARE and JBI checklists.Results: A total of 42 articles were selected. The analysis confirmed that assessments included patient-reported outcomes for symptom evaluation alongside cardiac diagnostic modalities for assessing changes in cardiac pathology throughout the clinical course. Follow-up information for assessing cardiac disease progression was reported in only 12 out of 42 studies. The included reports showed a low reporting frequency for treatment adherence, adverse events, and the acquisition of informed consent.Conclusion: This study analyzed case reports in Korean medicine on heart diseases and coronary artery diseases, identifying diagnostic tools, evaluation methods, and reporting practices, and presented the necessary reporting items to enhance reporting quality and consistency.
온경탕 투여로 호전된 하복부 및 수족부 냉증 1례
Authors: Kim Jun-yeol , Son Chang-gue
Published: January 2025

Objective: We report a clinical case of cold hypersensitivity which was notably improved with the administration of Ongyeong-tang (溫經湯).Methods: A 68-year-old female patient presented with severe cold hypersensitivity in the lower abdomen, as well as in both hands and feet, without any observable skin color change. Ongyeong-tang modification was prescribed based on the pattern diagnosis of “upper body heat and lower body cold”. Digital infrared thermographic imaging (DITI) and numeric rating scale (NRS) were utilized for evaluation.Results: After approximately 12 weeks of treatment, her overall coldness notably improved from 8 to 1 in NRS, as evidenced by changes in surface temperature observed through DITI. A follow-up assessment conducted after the discontinuation of Ongyeong-tang confirmed that the improvement in her symptoms was well-maintained. No adverse effects or abnormal laboratory findings were observed.Conclusion: The long-term administration of Ongyeong-tang may serve as a safe and effective option for treating cold hypersensitivity, particularly in cases associated with “upper body heat and lower body cold”.
Co-creation in citizen science: sharing learnings and good practice from an indoor, airborne microplastics project
Authors: Sardo Ana Margarida , De Vito Laura , Pringle Kirsty J. , Hansen Mark , Lamb-Riddell Kathryn , Laggan Sophie , Cox Timothy , Williams Ben
Published: January 2025

HOMEs was a citizen science exploratory project, aimed at investigating the presence of airborne microplastics in people's homes. Participants placed passive samplers in their homes, using low-cost microscopes to see and take pictures of their samples. The methods developed are promising, however there are a number of pitfalls to avoid and key considerations. This practice insight explores successful approaches and identifies barriers and limitations when embedding co-creation and participatory citizen science approaches to a research project. This piece focuses on the methods and engagement with participants, rather than on microplastics findings.
SISTEM PENJAMINAN KUALITAS MUTU OBJEK TITIP JUAL PRODUK ELEKTRONIK SECOND PADA USER PLATFORM INSTAGRAM @CONSIGNGAMING DAN @TITIPJUAL_OKE DALAM PERSPEKTIF MABI’ PADA AKAD JUAL BELI
Authors: M. Lukman Hakim T
Published: January 2025

Social media is now used as a platform for a number of business endeavors, including conducting sales-related tasks. The selling of secondhand electronics is the main topic of this research. As a result, guaranteeing the quality of the products that are sold (mabi') is important for both the seller and the owner of the transaction. In addition to describing restricted time and the third Mabi's viewpoint on the sale of commodities and the quality assurance of secondary products, this study additionally describes purchasing and sales procedures. This study's research methodology uses conceptual and case methods with an empirical research methodology in which data was acquired through interviews and qualitative analysis. The study's findings indicated that, first, the practice of selling and buying secondhand products on the Instagram platforms @consigngaming and @titipjual_oke defines certain terms and conditions of sale, including the requirement that the products be original, in good condition, and worth selling; second, there is a time limit for quality assurance, with the buyer having three days to inspect the items being purchased; and third, there is a review of akad mabi’ on the sale of purchase against the guarantee of quality in purchase a secondhand item product.
THE CONCEPT OF DEBT TRANSFER (HIWALAH) IN ISLAMIC BANKING BASED ON DSN-MUI FATWA NO. 31/DSN-MUI/VI/2002
Authors: Aidil Fikriadi  , Azmil Umur
Published: January 2025

The purpose of the study carried out is to describe the implementation of hiwalah carried out in Islamic banking according to the DSN-MUI fatwa No.31/DSN-MUI/VI/2002 / regarding the transfer of debt which is generally closely related to hiwalah in hiwalah there are three parties involved, namely muhil, muhal, and muhal 'alaihi. The study method used in the study carried out is qualitative using the type of literature study (libarary research). Data is taken directly from primary data in the form of DSN-MUI fatwas and secondary data sourced from literature related to the discussion, namely books, scientific works in the form of journals and articles related to the research topic. The study findings indicate that if the transfer of debt from conventional financial institutions to Islamic financial institutions is carried out based on the DSN-MUI fatwa which explains about each alternative financing which is a series of contracts that are carried out, it has conformity and does not contradict the DSN-MUI fatwa No.31/DSN-MUI/VI/2002 regarding debt transfer. In practice, hiwalah is used in various Islamic financial transactions, for example in financing, investment, and risk management.
TOKSISITAS ORAL AKUT SINGLE-DOSE EKSTRAK ETANOLIK DAUN GAHARU Aquilaria malaccensis Lamk. PADA TIKUS (Rattus norvegicus Berkenhout, 1769) GALUR WISTAR
Authors: Fitria Laksmindra , Cannadianti Nadhira , Putri Gunawan Ismi Cahya
Published: January 2025

Aquilaria malaccensis Lamk., one of tree species producing agarwood, has been utilized by the people of Southeast Asia (particularly Indonesia and Malaysia) as a component in traditional medicine due to their phytochemical constituents. This study was carried out to assess acute toxicity of oral administration of ethanolic extract of A.malaccensis (EEAM) using female Wistar rats as model animal. Procedure in accordance with OECD Guidelines for the Testing of Chemicals Test No. 423 with administration dose of 2000 mg/kg bw (single-dose). Parameters observed including signs of toxicity, body weight, body temperature, hematological profile (complete blood count), as well as evaluation of liver function (ALT and bilirubin) and renal function (BUN and creatinine). Data were analyzed statistically based on one-way ANOVA (ɑ=0.05) continued with Duncan's post hoc test (ɑ=0.05) and visualized as line charts. Results showed that neither mortality nor sublethal effects were recorded during 14 days of the experiment. The chart exhibited that the group received EEAM demonstrated a comparable trend to the control group for all parameters. Therefore, it can be concluded that EEAM is safe or no-observed-adverse-effect-level (NOAEL) for single-dose oral administration at the dose of 2000 mg/kg bw. If standardized following the Globally Harmonized System of Classification and Labeling of Chemicals (GHS), EEAM is classified in Category 5 (LD50 > 2000 mg/kg bw). Based on this finding, we will continue to conduct further study to assess the repeated-dose acute oral toxicity of EEAM (subacute period)
PROFIL SENYAWA ANTIKANKER PADA ORGAN TANAMAN JATI (Tectona grandis L.f) DENGAN METODE GC-MS (GAS CHROMATOGRAPHY-MASS SPECTROPHOTOMETRY)
Authors: Setya Diningrat Diky , Lumbantoruan Rio Tresia
Published: January 2025

Kanker adalah suatu kondisi yang ditandai dengan perkembangan sel yang tidak terkendali, dipengaruhi oleh faktor genetik dan lingkungan. Untuk mengatasi hal ini, obat herbal yang mengandung sifat antikanker dapat digunakan untuk menghambat proliferasi sel lebih lanjut. Penelitian yang dilaksanakan bertujuan untuk mengkaji dan membandingkan kandungan antikanker pada berbagai bagian tanaman jati (Tectona grandis Lf) menggunakan Gas Chromatography-Mass Spectrometry (GC-MS). Ekstrak tanaman jati dari daun tua, daun muda, bunga, dan buah diperoleh melalui ekstraksi Soxhlet. Proses ekstraksi menggunakan perbandingan 1:10 dengan lama ekstraksi 2-3 hari, memerlukan 10 siklus dengan 500 gram simplisia dan 5 liter metanol. Ekstrak yang dipekatkan menjadi pasta kental dengan menggunakan rotary evaporator menghasilkan ekstrak daun tua 53,06 gram, daun muda 46,14 gram, bunga 36,23 gram, dan buah 19,74 gram. Ekstrak ini dianalisis menggunakan GC-MS, dan senyawa bioaktif yang diidentifikasi diperiksa lebih lanjut bioaktivitasnya menggunakan database PubChem NCBI dan PASS online. Temuan mengungkapkan bahwa tanaman jati mengandung 58 senyawa antikanker, yaitu pada organ daun muda terdapat 28 senyawa fitokima yang berfungsi untuk aktivitas antikanker. Pada daun tua memperoleh 16 senyawa bioaktif yang berfungsi sebagai antikanker. Bunga memperoleh 18 senyawa yang berpotensi untuk antikanker dan buah menghasilkan 17 senyawa bioaktif yang berpotensi sebagai antikanker dengan golongan senyawa terbanyak yang ditemukan yaitu golongan terpenoid. Terpenoid diketahui mempengaruhi kematian sel kanker melalui mekanisme apoptosis.
PERFORMANCE EVALUATION OF SEWAGE TREATMENT PLANT USING BIOCHIP MEDIA IN MBBR TECHNOLOGY : CASE STUDY “X GARMENT, CENTRAL JAVA
Authors: Yusrina Afifah , Ardhianto Rachmad , Darojat Khumaidah , Rahman Arief
Published: January 2025

“X” garment industry’s Sewage Treatment Plant (STP) was built to treat domestic wastewater with an inflow capacity of 500 m3/day. The main principle of the STP technology is an attached growth process with Moving Bed Biofilm Reactor (MBBR) technology using biochip media. Wastewater treated at the STP must meet the water quality standards of Ministry of Environment and Forestry Regulation 68 of 2016 before being discharged into water bodies. Therefore, this research aimed to evaluate the “X” garment industry’s STP performance. Wastewater sampling was carried out at the inlet and outlet of STP. Water quality parameters analyzed included pH, BOD, COD, TSS, oil and grease, ammonia, and total coliforms. The removal efficiency value is obtained from the calculation of sampling results. The analysis showed that all treated water parameters met the water quality standards throughout the research period. Hence, the average removal efficiency value at the STP for each parameter was above 90%.
Al-Ghazali’s Refutations of Philosophers: Examining Tahafut al-Falasifah on Eternity, Divine Knowledge, and Resurrection
Authors: Juwaini Juwaini , Zulfian Zulfian , Mawardi Mawardi , Safira Cut Siska
Published: January 2025

Al-Ghazali, a pivotal scholar in Islamic intellectual history, is renowned for his systematic critique of philosophical ideas that challenged Islamic theology during his time. His landmark work, Tahafut al-Falasifah (The Incoherence of the Philosophers), addressed the doctrines of prominent Muslim philosophers such as Al-Farabi and Ibn Sina, who sought to reconcile Greek philosophy with Islamic teachings. Using a library-based research approach and analytical methods, this study examines Al-Ghazali’s refutations, particularly his objections to the concepts of the universe's eternity, God’s limited knowledge of particulars, and the denial of bodily resurrection. By categorizing philosophical thought into acceptable, heretical, and unbelief categories, Al-Ghazali delineated the boundaries of religious orthodoxy in response to these debates. His critical approach not only fortified Islamic theological principles but also established a framework for reconciling reason and faith. This study underscores Al-Ghazali’s enduring influence in Islamic thought and highlights the relevance of his arguments in contemporary discussions on philosophy and religion.
Analisis Kitab Kaifiyyah Mengadakan Wakaf Muslimin Karangan Syeikh Junid Tola (M.1948) Descriptive Analysis of Kitab Kaifiyyah Mengadakan Wakaf Muslimin Authored by Syeikh Junid Tola (d. 1948)
Authors: Mohd Paid Muhammad Amirul Solehin , Abdul Niri Mohammaddin , Ali Abdul Karim , Rahman Noor Naemah Abdul
Published: January 2025

The Kitab Kaifiyyah Mengadakan Wakaf Muslimin, authored by Sheikh Junid Tola (d. 1948), is a rare Jawi literature that explains the practical implementation of Islamic endowment (waqf) as applicable to the Malay community of that era. In the context of historiography of fiqh on waqf, this study examines whether the book reflects a paradigm that carries regressive or progressive values. The research framework was formed based on qualitative research with data collection using the library method, while data analysis was guided by the content analysis method. The findings reveal 88 textual data in this book that are relevant to the development of waqf which results from 6 main sources, namely paddy field, zakat, rupi currency, land, business and craftmanship. Based on these textual data, it can be concluded that the concept of waqf development in Kitab Kaifiyyah is not only aligned with the principles of waqf in classical Islamic literature but is also progressive in accommodating the local circumstances of the Muslim community at that time.
من منظور الشريعة الإسلامية: دراسة فقهية تحليلية (BNPL) تقييم خدمات اشتر الآن وادفع لاحقًا Evaluation of Buy Now, Pay Later (BNPL) Services from Islamic Sharia Perspective: An Analytical Jurisprudence Study
Authors: Obaid Alaa al
Published: January 2025

This research explores the growing popularity of Buy Now, Pay Later (BNPL) services and their alignment with Islamic Sharia principles. As these services gain traction among Muslims, it is essential to ensure compliance with Sharia laws in financial transactions. The study highlights the necessity to evaluate BNPL’s adherence to rules regarding riba (interest), gharar (uncertainty), and fairness, aiming to clarify their permissibility under Islamic jurisprudence. The research employs an analytical jurisprudential approach, reviewing Sharia sources, fatwas, and interviews with scholars. Key findings suggest that while some BNPL contracts conflict with Sharia due to interest charges and fees, they can be adapted to comply by removing these elements and promoting transparency. The study underscores the importance of educating companies and consumers on Sharia-compliant models and consulting scholars to develop alternative financing solutions that align with Islamic values.
How to Exercise Self-Control
Authors: Jewellery witch Seraphita
Published: January 2025

How to How to Exercise Self-Control is a performative video piece centred around the Irritation Channelling Rings, created for the Tactilite exhibition at Hobusepea Gallery in 2021.

These jewellery pieces invite a pseudomagical interaction, crafting a ritual where the rings serve as tools to soothe irritation and foster emotional transformation. Their dynamic nature is portrayed through movement, bodily interactions, and adaptability, with the visual blur enhancing their fluidity and transformative essence.

Employing Haptic Visuality, this multisensory approach weaves together emotional resonance and speculative ritual, reimagining connection within a pseudomagical framework.

Idea and performance: Darja Popolitova
Video effects: Jakob Tulve
Sound: Andres Nõlvak

© Darja Popolitova
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Franciscan Monastery of the Visitation of the Blessed Virgin Mary in Cetin
Authors: Kekez Hrvoje
Published: January 2025

The Franciscan Monastery of the Visitation of the Blessed Virgin Mary in Cetin is best remembered as the site where the Croatian nobility and church prelates assembled on January 1st, 1527. This historic event, documented in a solemn decree, marked the election of Ferdinand I of Habsburg as the Croatian king. Despite its significance, the monastery’s history and importance have received little attention in Croatian historiography. Therefore, the first aim of this paper is to address this gap by utilizing lesser-known and rarely used historical sources. Additionally, the paper seeks to determine the monastery’s location within late medieval Cetin. It examines existing theories about its site, evaluates the validity of these conclusions, and proposes new possibilities for its location based on an analysis of preserved written sources, early modern cartographic data, and field research. The research and considerations presented here indicate that the Franciscan Monastery was most likely founded by Count Stephan III Frankapan in 1463 or 1464, when he brought the Franciscan friars to Cetin and entrusted them with the management of the church of the same name, which had already been a significant pilgrimage site for some time. In the following years, the monastery became extremely important and by the beginning of the 16th century, it served as the center of the Observant Franciscan Vicariate of Bosnia Croatia, which later became a province after the vicariate was elevated to the rank of a province in 1517. By the mid-16th century, they were no longer realistically the Counts Frankapans able to exercise patronage over the Diocese of Krbava or the Franciscan Province of Bosnia Croatia, as the wars with the Ottomans had noticeably diminished their social and material power. The latest possible timeframe for the departure of the Franciscans from Cetin is suggested to be 1575, as mentioned by Adam Baltazar Krčelić. Furthermore, the considerations presented in this paper, which involve a new analysis of known and unknown medieval and early modern written sources and maps, as well as field reconnaissance, provide a conclusive set of indications that the Franciscan Monastery of the Visitation of the Blessed Virgin Mary was most likely located on the plateau on the eastern slope, east of the current road leading from Cetingrad to Podcetin, at the entrance to the village of Podcetin.
Migracije i mobilnost ljudi u kasnom srednjem vijeku
Authors: Andrić Tonija , Birin Ante
Published: January 2025

Ovaj tekst proučava društvene i ekonomske veze stanovništva Splita i Šibenika u 15. stoljeću na temelju podataka pronađenih u sačuvanim notarskim spisima. Ti nam podaci višestruko svjedoče o prisutnosti Šibenčana u Splitu, odnosno Splićana u Šibeniku te nam ovisno o svakom pojedinom slučaju u većoj ili manjoj mjeri pružaju uvid u njihov život i poslovnu djelatnost. Prateći tako sudbine pojedinaca, rad donosi prikaz migracijskoga kretanja stanovništva između ta dva grada i analizira kojim su društvenim skupinama ti pojedinci pripadali.