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PERBEDAAN AKTIVITAS ANTIOKSIDAN DAUN WARU LAUT (Hibiscus tiliaceus L.) DAN KULIT BUAH MANGGIS (Garcinia Mangostana L.) MENGGUNAKAN METODE DPPH
Jurnal Inovasi Teknik Kimia
Vol 10
, No 2
(2025)
Free radicals are the result of normal metabolism in the form of reactive oxygen compounds that have unpaired electrons and tend to be unstable. Free radicals can cause skin aging and can cause other effects such as skin cancer, therefore the role of antioxidants is very necessary for skin health. Sources of antioxidants can be obtained from natural ingredients, namely sea waru leaves (Hibiscus tiliaceus L.) and mangosteen rind (Garcinia Mangostana L.). Sea waru leaves contain alkaloids, flavono...
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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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Design and Development of an Interactive Scouting Educational Game Using the MDLC Approach
Advance Sustainable Science, Engineering and Technology
Vol 7
, No 2
(2025)
This research aims to develop an Android-based educational game that can increase students' understanding of the concept of solving. The development method used is the Multimedia Development Life Cycle (MDLC) with a heuristic approach. This heuristic approach involves a user-oriented design process, prioritizing ease of use and compatibility with scouting materials. This game is designed with an attractive and interactive appearance, and is equipped with games that are tailored to students' abil...
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1 Sitasi
Characteristics of Students in Physics Learning: Learning Motivation, Learning Styles, and Learning Experiences at Senior High School in Padang City
Ahzari, Serli
; Nabila, Putri
; Yulianda
; Desnita
; Usmeldi
Jurnal Penelitian Pembelajaran Fisika
Vol 16
, No 2
(2025)
This research aims to analyze the characteristics of students in physics learning, focusing on learning motivation, learning styles, and learning experiences. The research employs a descriptive method with a questionnaire as the instrument, distributed to 54 high school student respondents in Padang City. The data is analyzed quantitatively based on the percentage score for each indicator. The results show that students' learning motivation falls into the good category (73%), the most dominant l...
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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
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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The Effectiveness of Using Smartphone-Based Phyphox in Field Practice Tilt to Improve Students' Creative Thinking Skills
Rusdin, Muhammad Epi
; Prasetyo, Erwin
; Anwar, Zaina
; Pujianti Bejahida Donuata
; Nurfadilah
; Farizi, Zakaria Al
Jurnal Penelitian Pembelajaran Fisika
Vol 16
, No 2
(2025)
The use of technology is a solution to overcome problems in physics learning. This study aims to determine the effectiveness of using Smartphone-based Phyphox in improving students' creative thinking skills. The design used in this research is a nonequivalent pre-test and post-test control group design. This study used a purposive sampling technique to get two groups. The statistical analysis used was independent sample t-test. The results of the analysis showed that there was an effect of using...
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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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Sustainable Aquaculture: The Role of Probiotic Fortification In Enhancing Catfish Growth In Biofloc Aquaponics Technology
Dewi, Endah Rita Sulistya
; Mufidah, Ratna
; Rakhmawati, Reni
; Ulfah, Maria
; Khoiri, Nur
; Wijaya, Angelica Tricia
; Hudin, Noraine Salleh
Advance Sustainable Science, Engineering and Technology
Vol 7
, No 2
(2025)
Catfish (Pangasius sp.) is a freshwater fish commodity that is widely cultivated in the Indonesian fisheries sector. The aim of this research was to determine the effect of fortification of liquid probiotics bioprisma and biogan on the protein and fat of catfish meat in the biofloc aquaponics technology. The catfish used in this study was 7-8 cm in size. The research was carried out using a completely randomized design (CRD) method with 3 treatments and 3 replications, the treatments were as fol...
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Performance Comparison of UWB Single Balanced Schottky Diode Mixers for RF Front-End Applications in 3-10 GHz Band
Shairi, Noor Azwan
; Mohammed , Yahya Al-gumaei
; Zakaria, Zahriladha
; Maizatul Alice Meor Said
; Misran, Mohamad Harris
; Abdullah Mohammed, Zaghir Zobilah
Advance Sustainable Science, Engineering and Technology
Vol 7
, No 2
(2025)
This paper compares two single balanced mixer designs for ultra-wideband (UWB) of RF front-end at frequencies ranging from 3 to 10 GHz. The proposed mixer designs use two balun topologies for varying mixer performances. Thus, Design 1 incorporates a Coupled Line Balun and Design 2 incorporates a Branch Line Balun. Both designs make use of Skyworks' SMS7621 Schottky diodes, which have a low junction capacitance, and the Rogers RO4350B substrate, which has a dielectric constant of 3.48. The Coupl...
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1 Sitasi