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The Tort Responsibility For Damages To The Humanoid Robot: A Comparative Study Between The Civil Law And The Provisions Of Islamic Jurisprudence, Mohamed Hamdan Abdeen Asran Nov 2025

The Tort Responsibility For Damages To The Humanoid Robot: A Comparative Study Between The Civil Law And The Provisions Of Islamic Jurisprudence, Mohamed Hamdan Abdeen Asran

UB Journal for Humanities

The robot is one of the most prominent manifestations of the development of industrial intelligence, as it has entered into many fields such as civil service, medicine, industry, education, domestic and military service, and others. Which raises many legal problems and obstacles Such as defining the concept of a robot and the extent to which it enjoys a legal personality, and what is the legal and sharia basis on which we can found the responsibility of the robot. Can we attribute this responsibility to the theory of defective products, the theory of the responsible human representative, the theory of the …

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Some Of The Dictations Of Abi Hamid, Ahmed Ibn Muhammad Al-Shuja’I Al-Sarkhasi, (D. 482 Ah): Study And Investigation, Abdullah Saleh Suliman Alhejji Nov 2025

Some Of The Dictations Of Abi Hamid, Ahmed Ibn Muhammad Al-Shuja’I Al-Sarkhasi, (D. 482 Ah): Study And Investigation, Abdullah Saleh Suliman Alhejji

UB Journal for Humanities

The dictations is a type of classification in the noble Hadith, in which the narrator dictates hadiths with his chain of transmission, and perhaps he dictated news and poems along with them, so students write them and transfer them with attribution to him. In this research, there is a study and investigation of the dictations of Abi Hamid, Ahmed ibn Muhammad al-Shuja’i al-Sarkhasi, who died in 482 AH, and it shows this manuscript of the dictations. Since it is containing eight hadiths, so the enthusiasm had rose to study and investigate it. The researcher concluded by weakening them all. The …

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The Companion, Umm Hani' D/O Abi Talib, May Allah Be Pleased With Her, And The News That Came Out Of Her House, Afaf Shaman Qablan Alwutheinany Nov 2025

The Companion, Umm Hani' D/O Abi Talib, May Allah Be Pleased With Her, And The News That Came Out Of Her House, Afaf Shaman Qablan Alwutheinany

UB Journal for Humanities

This is a historical and documentary study of the life of The companion, Umm Hani' D/O Abi Talib, the cousin of the Prophet (PUH). It collected the scattered sayings of what was issued from her. The study also resolved many disputes around her, including her nickname and name, her family and offspring, her Islam, and the Prophet’s betrothal to her twice, then she presented herself to him, as well as the time and place of her death. The research also dealt with the identification of the house of Umm Hani' , so that the events could be understood correctly, so …

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Front Matter, Social Transformations Journal Of The Global South Nov 2025

Front Matter, Social Transformations Journal Of The Global South

Social Transformations Journal of the Global South

No abstract provided.

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Pluralizing Fields Of Practice As Arena For Global South Decolonization, Jose Jowel Canuday Nov 2025

Pluralizing Fields Of Practice As Arena For Global South Decolonization, Jose Jowel Canuday

Social Transformations Journal of the Global South

Excerpt: This issue covers three communities of practice that crack a window of understanding on how the contingencies of the Global South are decolonizing and transforming their respective fields. Crucially, the contingent conditions and social forces driving the transformation of these fields are simultaneously breaking the modalities in these practices while remaining attuned to their universalizing values.

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Assessing Knowledge, Attitudes, And Consumption Of Traditional Chinese Herbal Medicine Among Filipinos Post Covid-19 Pandemic, Jane Yugioksing Nov 2025

Assessing Knowledge, Attitudes, And Consumption Of Traditional Chinese Herbal Medicine Among Filipinos Post Covid-19 Pandemic, Jane Yugioksing

Social Transformations Journal of the Global South

Traditional Chinese Medicine (TCM) in the Philippines has existed as early as the first wave of migrants but has remained confined within a prescribed settlement in the Manila district known as Parian. Over the years, TCM has existed independently as a modality of treatment to improve one’s health, mostly catering only to the Chinese in the country. At the height of the COVID-19 pandemic, the Philippines’s Food and Drug Administration (FDA) approved the use of the TCM capsule Lian Hua Qing Wen as part of the COVID-19 treatment option, which was highly patronized by the mainstream Philippine society at that …

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Music Post-Westernism: From Tonal And Post-Tonal Hegemony To Multipolar Decolonization, Mark Jericho Y. Pacia Nov 2025

Music Post-Westernism: From Tonal And Post-Tonal Hegemony To Multipolar Decolonization, Mark Jericho Y. Pacia

Social Transformations Journal of the Global South

Post-Westernism is a transformation in which the West is no longer the hegemonic center but rather projects a new era of music. This research proposes Post-Westernism as the fundamental shift after the post-tonal (contemporary) era in art (classical) music. While the post-tonal era emerged from the rebellion toward tonality, Post-Westernism calls for critiquing the Western nature of both tonality and post-tonality. Through this, Post Westernism investigates the current musical hegemony and proposes a multipolar system via the decolonization and transculturation of music and scholarship. It answers the question: How will composers innovate when innovation is institutionalized and the avant-garde is …

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Mirza Sadaqat Huda, Sharon Seah, Qiu Jiahui, Eds., Energy And Decarbonization In Southeast Asia, Volume 2, Singapore: Iseas – Yusof Ishak Institute, 2025, 259 Pp., Blaise Joshua Morales Nov 2025

Mirza Sadaqat Huda, Sharon Seah, Qiu Jiahui, Eds., Energy And Decarbonization In Southeast Asia, Volume 2, Singapore: Iseas – Yusof Ishak Institute, 2025, 259 Pp., Blaise Joshua Morales

Social Transformations Journal of the Global South

Excerpt: Energy and Decarbonization in Southeast Asia, Volume 2 is edited by Mirza Sadaqat Huda, Sharon Seah, and Qiu Jiahui. This volume brings together perspectives from leading experts in the region, providing a comprehensive overview of Southeast Asia’s energy transition. Published in 2025 by ISEAS – Yusof Ishak Institute, the book highlights its contemporary relevance in the evolving landscape of energy and decarbonization. This volume offers crucial insights for Southeast Asia’s urban planners, energy strategists, and regional policymakers. It addresses the challenges and opportunities faced by key stakeholders involved in shaping the region’s energy future—a timely and multidisciplinary compendium in …

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Uni Scholarworks Readership Snapshot, October 2025, Bepress Nov 2025

Uni Scholarworks Readership Snapshot, October 2025, Bepress

Library Documents & Reports (entire collection)

No abstract provided.

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Pengaruh Aerobic Low Impact Exercise Terhadap Fungsi Kognitif Lansia Dengan Risiko Demensia Di Sasana Tresna Werdha Cibubur Tahun 2025, Nur Achirda, Liza Laela Abida, Kania Annisa Zahra Nov 2025

Pengaruh Aerobic Low Impact Exercise Terhadap Fungsi Kognitif Lansia Dengan Risiko Demensia Di Sasana Tresna Werdha Cibubur Tahun 2025, Nur Achirda, Liza Laela Abida, Kania Annisa Zahra

Jurnal Fisioterapi Terapan Indonesia

Background: Entering old age, the elderly often face various problems, one of which is impaired cognitive function. Some factors that influence the decline in cognitive abilities in the elderly include gender, education level, occupation, nutritional status, and comorbidities that can interfere with the nervous system, such as dementia and Alzheimer's disease. The problem of dementia in the elderly is an important concern that requires effective prevention and treatment. Dementia in the elderly can include several aspects, such as orientation, registration, attention and calculation, memory, and language. Physiotherapy has an important role in maintaining and improving body movement function, so that …

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Development Of A Telenursing-Based Self-Assessment Questionnaire For Diabetic Foot Ulcer Risk, Ratna Wirawati Rosyida, Sugiyarto Sugiyarto Nov 2025

Development Of A Telenursing-Based Self-Assessment Questionnaire For Diabetic Foot Ulcer Risk, Ratna Wirawati Rosyida, Sugiyarto Sugiyarto

Jurnal Keperawatan Indonesia

Development of a Telenursing-Based Self-Assessment Questionnaire for Diabetic Foot Ulcer Risk. Early identification of the risk of diabetic foot ulcers (DFU) is crucial in preventing ulcers. Caring for diabetic patients, including early detection of the risk of DFU with telenursing, will improve accessibility to health facilities and also help the work of nurses. Currently, there are many instruments or tools to detect the risk of DFU, but instruments that apply telenursing and can be used independently and easily by patients are still limited. This study aimed to develop a digital self-assessment questionnaire for DFU risk in type 2 Diabetes Mellitus …

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State Of California Cannabis Reporting, University Of Mississippi – National Center For Cannabis Research And Education Nov 2025

State Of California Cannabis Reporting, University Of Mississippi – National Center For Cannabis Research And Education

California

No abstract provided.

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Implementing Phq-2 In An Outpatient Mental Health Practice, Krishona Poignard Nov 2025

Implementing Phq-2 In An Outpatient Mental Health Practice, Krishona Poignard

Doctor of Nursing Practice Projects

Depression remains widely underidentified in outpatient behavioral health settings, where variable screening practices limit early recognition and appropriate treatment. This quality improvement project addressed this gap by standardizing screening through targeted clinician education. The purpose was to improve clinician confidence and adherence to validated tools, specifically the Patient Health Questionnaire-2 (PHQ-2) and, when indicated, the Patient Health Questionnaire-9 (PHQ-9). The project aimed to increase consistent tool use through an evidence-based educational intervention guided by Lewin’s Change Theory and the Iowa Implementation for Sustainability Framework. A quasi-experimental, single-group pretest–posttest design was employed with licensed clinical staff, including licensed social workers (LSWs), …

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The Relationship Between Socioecological Factors And Resilience Among Urban Workers During The Covid-19 Pandemic, Puttaporn Onkhamsee, Sukanya Tantiprasoplap,, Wanna Sanongdej Nov 2025

The Relationship Between Socioecological Factors And Resilience Among Urban Workers During The Covid-19 Pandemic, Puttaporn Onkhamsee, Sukanya Tantiprasoplap,, Wanna Sanongdej

Jurnal Keperawatan Indonesia

The global outbreak occasioned by the coronavirus disease 2019 (COVID-19) has affected people of working age in urban communities, both socially and psychologically, making resilience an important aspect of efforts to cope with such a crisis. Against this backdrop, this study identified and investigated the socioecological factors associated with the resilience of employable urban residents against the COVID-19 pandemic as part of a conceptual framework that encompasses individual, family, and community resilience. This cross-sectional research involved 368 working-age individuals recruited via simple randomization from communities in seven areas in central Bangkok. Data were collected through a questionnaire survey and examined …

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Ädeeja: Origem Dos Alimentos Cultivados E Práticas Alimentares Ye’Kwana, Viviane Cajusuanaima Rocha (Povo Ye’Kwana) Nov 2025

Ädeeja: Origem Dos Alimentos Cultivados E Práticas Alimentares Ye’Kwana, Viviane Cajusuanaima Rocha (Povo Ye’Kwana)

Tipití: Journal of the Society for the Anthropology of Lowland South America

O artigo explora a ligação entre a cosmologia do povo Ye’kwana e suas práticas alimentares tradicionais, com base no conceito central de ädeeja, que representa os alimentos cultivados. Esse termo abrange mais do que a ideia de comida — ele carrega uma dimensão cosmológica e relacional, conectando humanos, espíritos, plantas e o território. Está ligado a uma rede de relações entre humanos, espíritos vegetais e saberes ancestrais. Representa a comida como elo com o cosmos, reforçando a interdependência entre os seres. Minha análise mostra que, para os Ye’kwana, alimentar-se é um ato cósmico, enraizado em narrativas, cantos e relações …

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Prosperando Con Otros: Paisajes Multiespecie Y Producción De Alimentos En El Caribe Colombiano, América Larraín Nov 2025

Prosperando Con Otros: Paisajes Multiespecie Y Producción De Alimentos En El Caribe Colombiano, América Larraín

Tipití: Journal of the Society for the Anthropology of Lowland South America

Este artículo es resultado de un proyecto de investigación asociado a la producción de alimentos en una comunidad arhuaca en las tierras bajas de la Sierra Nevada de Santa Marta. Se describen algunas experiencias de la implementación del proyecto, destacando los aspectos relacionados con la articulación entre las técnicas derivadas de la agroacuicultura integrada y la cosmovisión arhuaca. Con este artículo, se espera contribuir a la reflexión sobre cómo las cosmologías indígenas se materializan en prácticas concretas, que en este caso específico podrían pensarse en el marco de lo que se ha llamado el Buen Vivir.

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As Donas Do Fogo: Parentesco, Práticas Alimentares E Luta Pela Terra Entre Os Kaiowa E Guarani, Lauriene Seraguza Olegário E Souza Nov 2025

As Donas Do Fogo: Parentesco, Práticas Alimentares E Luta Pela Terra Entre Os Kaiowa E Guarani, Lauriene Seraguza Olegário E Souza

Tipití: Journal of the Society for the Anthropology of Lowland South America

Os Guarani e Kaiowa apresentam uma relação sofisticada entre as práticas alimentares e a recuperação de territórios tradicionais em Mato Grosso do Sul (Brasil), protagonizada cotidianamente por mulheres indígenas. As mulheres guarani e kaiowa consideram o fogo como uma referência da casa de residência de um núcleo familiar e a palavra se apresenta como potência em seu fazer político. Elas são as “donas do fogo”. Compartilhando suas próprias substâncias corporais e acumulando aprendizados adquiridos no cuidado com pessoas mais velhas da parentela, as mulheres reúnem um conjunto próprio de conhecimentos e ocupam posição de reconhecido destaque no parentesco guarani, habilitando-as …

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The Two Hungers: Food Security, Morality, And Cash Transfer Policies For Canela Apanjekra People In Indigenous Central Brazil, Bruno Nogueira Guimarães Nov 2025

The Two Hungers: Food Security, Morality, And Cash Transfer Policies For Canela Apanjekra People In Indigenous Central Brazil, Bruno Nogueira Guimarães

Tipití: Journal of the Society for the Anthropology of Lowland South America

This article examines how the Canela Apanjekra (Porquinhos Indigenous Land, Maranhão, Brazil) engage with conditional cash transfer policies aimed at combating hunger—especially the Bolsa Família Program—and how these policies are interpreted through Indigenous moral economy. Drawing on long-term ethnographic research (2011–2019) and a household survey conducted in 2019, it argues that “hunger” is not a unitary condition measurable solely through individual consumption, but a relational and ecological experience shaped by obligations to share, by shame/respect (paham), and by shifting conditions of subsistence. The analysis develops the notion of “two hungers”: in the village, hunger is commonly articulated as …

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Young V. State [Of Nevada], 141 Nev. Adv. Op. 47 (Oct. 16, 2025), Madeleine Langhoff Nov 2025

Young V. State [Of Nevada], 141 Nev. Adv. Op. 47 (Oct. 16, 2025), Madeleine Langhoff

Nevada Supreme Court Summaries

COURT OVERRULES PRECEDENT WHICH REQUIRES TRIAL COURTS TO REMOVE JURORS BASED ON DIFFERENT CATEGORIES OF BIAS.

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Aprendiendo A Poner Gusto O Sobre Una Gastropolítica Urarina, Juana Lucía Cabrera Prieto, Harry Walker Nov 2025

Aprendiendo A Poner Gusto O Sobre Una Gastropolítica Urarina, Juana Lucía Cabrera Prieto, Harry Walker

Tipití: Journal of the Society for the Anthropology of Lowland South America

El artículo analiza cómo la comida se ha convertido en un eje central para comprender las transformaciones morales, corporales y políticas entre los urarina de la Amazonía peruana. La introducción de alimentos industrializados —especialmente los condimentos—, impulsada por escuelas, programas estatales, ONG y comerciantes, genera desconfianza corporal y tensiones éticas, al tiempo que habilita nuevas formas de convivencia. Las prácticas de gastrodiplomacia, entrelazadas con procesos de aprendizaje, revelan alianzas, jerarquías y conflictos mediante los cuales los urarina negocian sus relaciones con el Estado, el mercado y otros actores externos, sin dejar de afirmar su modo propio de ser. En este …

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Optimizing Zeolite Catalysts For Efficient Ldpe Plastic Waste Pyrolysis, Hilda Porawati, Mazwan Mazwan, Sukadi Sukadi Nov 2025

Optimizing Zeolite Catalysts For Efficient Ldpe Plastic Waste Pyrolysis, Hilda Porawati, Mazwan Mazwan, Sukadi Sukadi

Journal of Mechanical Engineering Science and Technology (JMEST)

The problem of plastic waste, particularly from low-density polyethylene (LDPE) plastic bags, poses a significant challenge in environmental management due to its non-biodegradable nature and widespread use in daily life. This study evaluates the influence of catalyst types on the characteristics and energy efficiency of liquid fuel products produced from LDPE waste pyrolysis. The three treatments compared were no catalysts, natural zeolite catalyst, and synthetic zeolite catalysts, each subjected to three different temperature variations: 250°C, 300°C, and 350°C. The observed parameters in this study were volume, product mass, cetane index, density, sulfur content, viscosity, flash point, calorific value, and energy …

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The Impact Of Pine Resin-Epoxy Ratios On Fire Resistance And Acoustic Performance Of Banana Fiber Composites, Cokorda Istri Putri Kusuma Kencanawati, Dewa Ngakan Ketut Putra Negara, I Gede Andy Andika Parahita Nov 2025

The Impact Of Pine Resin-Epoxy Ratios On Fire Resistance And Acoustic Performance Of Banana Fiber Composites, Cokorda Istri Putri Kusuma Kencanawati, Dewa Ngakan Ketut Putra Negara, I Gede Andy Andika Parahita

Journal of Mechanical Engineering Science and Technology (JMEST)

Because of their low environmental impact and biodegradability, composite materials derived from natural fibers and resins have drawn interest as sustainable substitutes for synthetic materials in thermal and acoustic applications. Two promising natural components are banana stem fiber and pine resin, but they need to be modified due to their mechanical limitations and flammability. Epoxy resin is commonly used to enhance structural performance; however, its effects on acoustic and fire resistance properties require further investigation. This study examined how different epoxy resin contents affected the sound absorption and fire resistance of composites made from banana stem fiber and pine resin. …

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Simulation Of Stress, Deformation, And Vibration In Unlubricated Ball Bearings At Varying Rotational Speeds, Billy Dwiki, Moh. Hartono Nov 2025

Simulation Of Stress, Deformation, And Vibration In Unlubricated Ball Bearings At Varying Rotational Speeds, Billy Dwiki, Moh. Hartono

Journal of Mechanical Engineering Science and Technology (JMEST)

Bearings are critical components in rotating machinery, and their performance is highly influenced by operational factors such as rotational speed, load, and lubrication. This study aims to analyze the deformation, stress, and dynamic behavior of SAE 52100 bearings under dry operating conditions at various rotational speeds, as well as to propose mitigation strategies for high-speed industrial applications. A finite element simulation was conducted using ANSYS R19.2 to evaluate the total deformation, equivalent elastic strain, Von Mises stress, and vibrational characteristics of a 6204-type SAE 52100 bearing. The simulations were performed across a speed range of 600 to 2000 RPM under …

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Numerical Investigation Of Ethanol-Enriched Diesel And Biodiesel Fuels In A Diesel Engine, Annisa Bhikuning, Hezron Elyakim Potto, Sandi Apriandi Setiawan, Jamal F. Jati Nov 2025

Numerical Investigation Of Ethanol-Enriched Diesel And Biodiesel Fuels In A Diesel Engine, Annisa Bhikuning, Hezron Elyakim Potto, Sandi Apriandi Setiawan, Jamal F. Jati

Journal of Mechanical Engineering Science and Technology (JMEST)

This study explores the effects of ethanol blending on the performance and emissions of a compression ignition (CI) engine using both diesel and biodiesel as base fuels. Motivated by increasing environmental concerns regarding pollutant emissions from conventional diesel engines, ethanol was introduced as an oxygenated additive to improve combustion characteristics and reduce the formation of harmful exhaust emissions. Ethanol’s high oxygen content promotes more complete combustion, potentially lowering carbon-based emissions such as carbon monoxide (CO), particulate matter (PM), and unburned hydrocarbons. In this study, performance and emission parameters were simulated using Diesel-RK software at various engine speeds of 1500, 2000, …

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One-Way Thermal-Fluid-Solid Coupling Analysis Of Helicopter Tail Reducer With Spiral Bevel Gear, Dongping Sheng, Zhongyuan Ma, Chenqi Zhou, Haidong Feng, Hun Guo, Chun Su Nov 2025

One-Way Thermal-Fluid-Solid Coupling Analysis Of Helicopter Tail Reducer With Spiral Bevel Gear, Dongping Sheng, Zhongyuan Ma, Chenqi Zhou, Haidong Feng, Hun Guo, Chun Su

Journal of Mechanical Engineering Science and Technology (JMEST)

This research focuses on investigating the thermal-fluid-solid coupling behavior within spiral bevel gears to enhance the bearing capacity and extend the operational service life of the gear reducer located in the helicopter tail gearbox. The study commences by constructing detailed, parametrically defined threedimensional digital models. These models accurately represent the critical components: the spiral bevel gear itself, the surrounding gearbox housing, and the supporting gear shaft, based directly on the specifications of an actual helicopter tail reducer assembly. Subsequently, the analysis proceeds with a one-way, steadystate thermal-solid coupling simulation performed on the established model assembly. This critical simulation phase aims …

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The Effect Of Preheater On Heat And Mass Transfer Efficiency Using Rotating Drum Roaster, Melisa Surya Andini, Retno Wulandari, Heru Suryanto Nov 2025

The Effect Of Preheater On Heat And Mass Transfer Efficiency Using Rotating Drum Roaster, Melisa Surya Andini, Retno Wulandari, Heru Suryanto

Journal of Mechanical Engineering Science and Technology (JMEST)

Indonesia is the third-largest coffee producer globally, facing challenges including rising raw material costs, increased energy consumption, and unpredictable weather conditions. One potential solution is optimizing energy efficiency during roasting. This study investigates the effect of preheating on time and energy efficiency in heat and mass transfer by utilizing waste heat to preheat green Robusta coffee beans. The experiment was conducted on a laboratory scale using a rotating drum roaster with a double-layer drum made of stainless steel and clay, at 200 °C under atmospheric pressure. Two treatments were applied: roasting with a preheater and without, each repeated three times …

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Spray Angle On The Performance Of Split-Type Ac Condenser Installed On Concrete Rooftop In Tropical Climate, Kennedy Kennedy, I N Frenki Aryana, Basri Basri Nov 2025

Spray Angle On The Performance Of Split-Type Ac Condenser Installed On Concrete Rooftop In Tropical Climate, Kennedy Kennedy, I N Frenki Aryana, Basri Basri

Journal of Mechanical Engineering Science and Technology (JMEST)

This study investigated the influence of different water spray angles (0°, 15°, and 30°) on the thermal and energy performance of a split-type air-conditioning (AC) condenser installed on a concrete rooftop in a tropical climate. An experimental setup was designed to replicate actual concrete rooftop conditions, focusing on the condenser inlet temperature, compressor power consumption, and system coefficient of performance (COP). A 6-minute ON and 6-minute OFF intermittent spray cycle was employed to optimise water usage and minimise excessive humidity. Experimental measurements were conducted on a 9,000 Btu/h split-type unit equipped with a nozzle system connected to a 200 L …

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Effect Of Argon Gas Flow Rate On Crystal Structure, Morphology, And Optical Properties Of Cigs Film For Photodetector Applications, Nurul Lathi’I Fatul Chamidah, Fadilah Wulan Cahyani, I Gusti Ayu Isnaini Fatha Ramadhani, Erma Surya Yuliana, Nasikhudin Nasikhudin, Safwan Abd. Aziz, Nandang Mufti Nov 2025

Effect Of Argon Gas Flow Rate On Crystal Structure, Morphology, And Optical Properties Of Cigs Film For Photodetector Applications, Nurul Lathi’I Fatul Chamidah, Fadilah Wulan Cahyani, I Gusti Ayu Isnaini Fatha Ramadhani, Erma Surya Yuliana, Nasikhudin Nasikhudin, Safwan Abd. Aziz, Nandang Mufti

Journal of Mechanical Engineering Science and Technology (JMEST)

CIGS material can be used as a material for photodetector applications. The deposition of CIGS thin films remains challenging. Generally, argon is used as a gas to bombard the CIGS material through the sputtering method. This study fabricated photodetectors by varying the argon gas flow rate (50-80 sccm) to investigate its effect on device performance. XRD, SEM, UV-Vis, and photoresponse tests were characterized. Structural analysis using XRD showed a weak (112) diffraction peak, indicating that the resulting film was not fully crystalline, but rather consisted of a nanocrystalline phase, even partly amorphous, with small crystallite sizes. According to the SEM …

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Numerical Analysis Of The Effect Of Vortex Generator On The Aerodynamic Performance Of Naca 6412 Airfoils Using Large Eddy Simulation, Dedet Hermawan Setiabudi, Joan Bayuaji Nugroho, Eli Kumolosari, Lazuardy Rahendra Pinandhita, Okto Dinaryanto Nov 2025

Numerical Analysis Of The Effect Of Vortex Generator On The Aerodynamic Performance Of Naca 6412 Airfoils Using Large Eddy Simulation, Dedet Hermawan Setiabudi, Joan Bayuaji Nugroho, Eli Kumolosari, Lazuardy Rahendra Pinandhita, Okto Dinaryanto

Journal of Mechanical Engineering Science and Technology (JMEST)

Aerodynamic performance of an airfoil is significantly affected by flow separation, especially at high angles of attack. One common strategy to control flow separation is adding a triangular vortex generator (VG), which creates small vortices that help keep the airflow attached. The present study investigated the impact of triangular vortex generators on a NACA 6412 airfoil using Computational Fluid Dynamics (CFD) method. Large Eddy Simulation (LES) was applied due to its ability to show the vortices more clearly than other methods. It can also accurately capture the flow separation. To obtain the lift, drag, and lift-to-drag ratio (CL/CD) data, four …

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The Effect Of Heat Treatment Duration On The Psychochemical, Mechanical, And Biodegradability Of Polyvinyl Alcohol/Gambir Extract Biocomposite Films, Ainul Kahfi Muhlasin, Poppy Puspitasari, Heru Suryanto, Diki Dwi Pramono, Dieter Rahmadiawan, Billie Jack Pasion Nov 2025

The Effect Of Heat Treatment Duration On The Psychochemical, Mechanical, And Biodegradability Of Polyvinyl Alcohol/Gambir Extract Biocomposite Films, Ainul Kahfi Muhlasin, Poppy Puspitasari, Heru Suryanto, Diki Dwi Pramono, Dieter Rahmadiawan, Billie Jack Pasion

Journal of Mechanical Engineering Science and Technology (JMEST)

This study investigates PVA-based films with the addition of gambir and heat treatment to improve the characteristics of the film. Methods include the synthesis of PVA film with gambir addition (0.5%), treated by heat treatment for 40 minutes and 60 minutes. The film was characterised by physicochemical, mechanical properties, and biodegradability. Data was analyzed using ANOVA with a significance of 95%. Results indicate that the surface of PVA/gambir films is smoother and more homogeneous as the heat treatment duration increases. New peaks of functional groups were identified after the addition of gambir at the C-C and C-O groups. After heat …

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