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A RECYCLING DEVICE FOR CONVERTING PET BOTTLES INTO FILAMENT MATERIAL FOR 3D PRINTERS
Teknika
Vol 10
, No 1
(2025)
Plastic bottles made from Polycarbonate (PC) are widely used for mineral water packaging. The use of these materials results in a large amount of plastic-type waste, which is bad for the environment if not handled properly. The plastic bottle packaging is only recommended for one-time use. Plastic bottles made from PET can be processed and used as raw material for 3D printers. The processing of these plastic bottles uses microcontroller technology, which is made to adjust the temperature for hea...
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PENGARUH PENAMBAHAN KATALIS CaO DAN CaO TERIMPREGNASI KOH BERBASIS CANGKANG TELUR TERHADAP HASIL SINTESIS BIODIESEL DARI MINYAK JARAK, MINYAK KELAPA DAN MINYAK KELAPA SAWIT
Muarif , Agam
; Mulyawan , Rizka
; Nurlaila, Rizka
; Fikri, Ahmad
; Armita Sandi, Nazlia
; Cinta Buana Nasution, Vinkhan
; Syahrani, Irma
Jurnal Inovasi Teknik Kimia
Vol 10
, No 2
(2025)
Biodiesel merupakan bahan bakar alternatif yang sifatnya renewable energy dan ramah lingkungan yang dapat disintesis dari beberapa jenis minyak seperti minyak jarak, minyak kelapa, minyak kelapa sawit dan sebagainya. Hal ini didukung oleh kandungan senyawa yang terdapat dalam ketiga jenis minyak tersebut disertai dengan bahan baku yang mudah didapatkan dan dibudidayakan di Indonesia. Proses pembuatan biodiesel dari minyak melalui reaksi esterifikasi dan transesterifikasi dengan menggunakan bantu...
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Evaluating Compressed Sensing Matrix Techniques: A Comparative Study of PCA and Conventional Methods
Advance Sustainable Science, Engineering and Technology
Vol 7
, No 2
(2025)
This research examines the performance of various compressed sensing matrix techniques, with a focus on Principal Component Analysis (PCA) compared to conventional methods. By applying these techniques to a range of high-dimensional datasets, we assess their effectiveness in reducing data dimensionality while preserving essential information. Our results demonstrate that PCA consistently outperforms traditional methods in terms of both accuracy and computational efficiency. These findings have s...
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1 Sitasi
Pemberdayaan Masyarakat Melalui Program Basic Safety Training (BST) bagi Siswa SMK Negeri 4 Purworejo
Sejahtera: Jurnal Inspirasi Mengabdi Untuk Negeri
Vol 4
, No 2
(2025)
Basic Safety Training (BST) is a basic safety training that must be had by every crew member before working on a ship. This activity aims to equip prospective sailors with the basic safety knowledge and skills needed to deal with emergency situations on board. This activity is carried out using the participatory action research (PAR) method approach and hands-on training method. The stages of implementation include the Preparation and Planning Stage, the Training Implementation Stage, and Evalua...
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Development and Application of Physics Learning Video Based on Problem Based Learning with Canva Application to Improve Process Skills
Jurnal Penelitian Pembelajaran Fisika
Vol 16
, No 2
(2025)
This study aims to develop and apply Problem Based Learning (PBL)-based instructional videos using the Canva application and to determine the extent of the improvement in students' process skills on the topic of quantities and measurements, as well as to understand students' responses to the physics instructional videos. The research method used was Research and Development (R&D) with the 4D model (Define, Design, Develop, Disseminate). The research subjects consisted of 33 tenth-grade stude...
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A Novel Classification Framework Using Transformer-Based Encoding and Low-Rank Tensor Fusion for Enhanced Classification and Efficiency
Advance Sustainable Science, Engineering and Technology
Vol 7
, No 2
(2025)
This paper proposes a transformer-based framework for sentiment analysis, designed to improve both accuracy and computational efficiency across diverse datasets. The model incorporates a low-rank tensor fusion mechanism to reduce computational complexity, optimizing the transformer encoder’s performance. Through an extensive evaluation on three benchmark datasets—Airlines, CrowdFlower, and Apple—our approach demonstrates superior performance in sentiment classification tasks, achieving accuracy...
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1 Sitasi
Molecular Identification of Color Variants of Procambarus clarkii Using the COI Gene for Taxonomic Validation
Bhagawati, Dian
; Husein Sastranegara, Muhammad
; Agus Nuryanto
; Anastasia Endang Pulungsari
; Elly Tuti Winarni
; Atang
; Hanan Hassan Alsheikh Mahmoud
Advance Sustainable Science, Engineering and Technology
Vol 7
, No 2
(2025)
This study addresses taxonomic uncertainty surrounding color variants of Procambarus clarkii in aquaculture and conservation contexts. We investigated whether commercially significant color morphs represent distinct subspecies or phenotypic variations of a single species. Using the cytochrome c oxidase subunit I (COI) gene as a molecular marker, we analyzed four color morphs (blue, white, orange, and brown) from aquaculture facilities in Banyumas Regency. DNA extraction, PCR amplification, and s...
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Development of Diagnostic Tests to Identify Students' Problem-Solving Difficulties in Static Fluid Material
Jurnal Penelitian Pembelajaran Fisika
Vol 16
, No 2
(2025)
The availability of diagnostic instruments specifically designed to identify students' difficulties in solving problems related to static fluids is still limited, even though this material often leads to misconceptions and conceptual difficulties. This article aims to present the results of the development of a diagnostic test instrument to identify students' problem-solving difficulties in the static fluid material. This study employs the R&D (Research and Development) method using the ADDI...
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Analysis of Physics Assessments Designed by Science Teachers at Junior High School
Jurnal Penelitian Pembelajaran Fisika
Vol 16
, No 2
(2025)
This study aims to analyze the suitability of physics assessments designed by science teachers at the junior high school level by paying attention to good assessment criteria. This type of research is descriptive-qualitative, involving three teachers in junior high school. The data collection technique is in the form of assessment archive documentation. The assessment analyzed was divided into three documents, namely motion and force, simple aircraft and static electricity. Data analysis techni...
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Implementation PBL Model Assisted by E-Module Based on Refutation Text to Overcome Student Misconceptions on Dynamic Electricity Topics
Jurnal Penelitian Pembelajaran Fisika
Vol 16
, No 2
(2025)
This research was conducted with the aim of addressing students' misconceptions in dynamic electricity topics through the application of the Problem Based Learning (PBL) model assisted by an e-module based on refutation text. The research design uses an experimental method, in the form of a pre-experimental design and a one-group pretest-posttest design, as well as the cluster random sampling technique. This research was conducted at SMP Negeri 2 Pontianak, with a research sample consisting of 3...
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