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SINTESIS DAN KARAKTERISASI FOTOKATALIS NANO TIO2-MEMBRAN POLIURETAN BERBASIS MINYAK ALPUKAT, HDI, DAN POLYETHYLENE GLYCOL (PEG) PADA FOTODEGRADASI METIL JINGGA
Jurnal Inovasi Teknik Kimia
Vol 10
, No 4
(2025)
Synthetic dyes such as methyl orange are classified as persistent pollutants that are difficult to degrade biologically, thus requiring effective and sustainable treatment technologies. This study develops a photocatalytic membrane based on polyurethane (PU) synthesized from avocado seed oil, hexamethylene diisocyanate (HDI), and polyethylene glycol (PEG) for immobilizing TiO₂ nanoparticles. PEG was used as a dispersing additive to prevent TiO₂ agglomeration and enhance the membrane's hydrophili...
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PROSES PEMUCATAN CRUDE PALM OIL DENGAN RECOVERY REACTIVATED SPENT BLEACHING EARTH (RSBE)
Jurnal Inovasi Teknik Kimia
Vol 10
, No 4
(2025)
Spent Bleaching Earth (SBE) merupakan limbah besar dari industri minyak kelapa sawit yang terbentuk selama proses pemurnian di refinery plant dan dipisahkan melalui proses filtrasi di niagara filter. SBE masih mengandung minyak sebanyak 20-40%, yang dapat dimanfaatkan kembali. Penelitian ini bertujuan untuk mengetahui pengaruh aktivasi SBE, kualitas asam lemak bebas, bilangan peroksida dan warna pada Crude Palm Oil yang telah dilakukan bleaching menggunakan karbon aktif RSBE. SBE direndam denga...
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SYNERGISTIC INTERFACIAL CHEMISTRY OF HUMIC ACID AND ACTIVATED FLY ASH FOR HIGH-PERFORMANCE Mn²⁺ ADSORPTION
Susparini, Ninik Triayu
; Ramadhan, Alamsyah Sultan
; Aferta, Lusi
; Benu, Marlon Jusak Renaldy
; Wijayanti, Sri
; Tantowi, Ali
Jurnal Inovasi Teknik Kimia
Vol 11
, No 1
(2025)
This study developed a hybrid adsorbent derived from activated fly ash (FA) and humic acid (HA) for effective Mn²⁺ removal from aqueous solutions. Fly ash was activated using 1 M NaOH to increase its surface hydroxyl groups (≡Si–OH and ≡Al–OH) and enhance reactivity. The activated FA was then composited with HA, which contains abundant –COOH and –OH groups, forming an inorganic–organic hybrid with improved adsorption capability. The HA–FA composite with a 1:3 mass ratio exhibited the highest Mn²...
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Unveiling the Link Between Numeracy Skills and Self-Efficacy: A Study on Physics Learning Through AKM Assessments
Jurnal Penelitian Pembelajaran Fisika
Vol 16
, No 4
(2025)
This study explores the relationship between numeracy skills and self-efficacy among grade 10 students within the context of the Minimum Competency Assessment (AKM) in physics, focusing on linear and parabolic motion. Employing a quantitative descriptive design, the research involved 140 students from a public high school in Bekasi, Indonesia. Instruments included a numeracy test comprising 17 AKM-based physics questions and a self-efficacy questionnaire adapted from Bandura's framework, coverin...
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Development of E-Worksheets Discovery Learning Model Assisted by Augmented Reality for Renewable Energy Topic
Jurnal Penelitian Pembelajaran Fisika
Vol 16
, No 4
(2025)
The poor motivation and interest of students in learning physics which is frequently viewed as challenging and less interesting led to the conduct of this study. As a result, creating cutting-edge educational materials that may facilitate interactive learning and foster a deeper conceptual grasp is essential. Building an Electronic Student Worksheet on the subject of renewable energy using the Discovery Learning methodology enhanced by Augmented Reality is the aim of this study. The research and...
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Project-Based Learning Effect on Improving Students’ Creative Thinking in Static Fluid Learning
Jurnal Penelitian Pembelajaran Fisika
Vol 16
, No 4
(2025)
The low creative thinking ability of students in understanding physics concepts, especially in static fluid material, is one of the problems that needs attention in the learning process. Therefore, this study aims to determine how the Project Based Learning (PjBL) learning model that uses a scientific approach affects students' ability to think creatively about static fluid material. The research method used is a quasi-experimental design with a Nonequivalent Control Group Design. The research s...
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Virtual Reality Effect on Student Learning Outcomes in Nuclear Physics and Radioactivity Topics
Jurnal Penelitian Pembelajaran Fisika
Vol 16
, No 4
(2025)
Learning Nuclear Physics and Radioactivity is often perceived as difficult by student because the concepts are abstract, thus requiring learning media that can visualize these concepts more concretely. This study aims to analyze the effect of using Virtual Reality media on student’s learning outcomes in the topic of Nuclear Physics and Radioactivity. The research employed a Quasi Experimental method with a Nonequivalent Control Group Design. The subject were 33 12th grade students of Al Adzkar H...
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Development of Interactive Learning Media Based on Digital Platforms to Improve Critical Thinking Skills in Primary School Science Education
Jurnal Penelitian Pembelajaran Fisika
Vol 16
, No 4
(2025)
The study aims to analyze how the use of interactive learning media based on digital platforms impacts students' critical thinking skills. By collecting quantitative and qualitative data, it is hoped that comprehensive information can be obtained regarding the extent to which interactive learning media influences the development of students' critical thinking skills. The methods used are qualitative analysis: Using ADDIE analysis to identify themes and patterns that emerge from interviews and ob...
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Design of Wideband SPDT RF Switch Using Switchable DGS for Sustainable Wireless Systems
Othman, Adib
; Shairi, Noor Azwan
; A Majid, Huda
; Saparudin, Faiz Asraf
; Zakaria, Zahriladha
; Najib Al-Fadhali
Advance Sustainable Science, Engineering and Technology (ASSET)
Vol 7
, No 4
(2025)
This paper presents a single-pole double-throw (SPDT) switch that is integrated with a thin rectangular patch switchable defected ground structure (DGS). It is a novel technology for obtaining wideband and high isolation for the SPDT switch in millimeter-wave (mm-wave) telecommunications due to the usage of switchable DGS with bandstop and bandwidth enhancement capabilities. A wideband and high isolation are required for the switchable DGS SPDT switch to operate optimally in mm-wave frequency ra...
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ANALISIS YURIDIS PERJANJIAN JUAL BELI PERUMAHAN DENGAN METODE DOWN PAYMENT
DINAMIKA HUKUM
Vol 26
, No 2
(2025)
Cases of non-performance of contract. on the part of the aggrieved party bring the case to the criminal realm. The charge reported is the fraud article, even though the criminal offense has not been fulfilled. So that it has the potential to cause wrong criminalization, the main problem is the inaccurate use of the fraud article against defaults which are basically civil. The research method uses normative juridical with decision analysis and criminal and civil law studies related to non-perform...
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