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Menampilkan 31–40 dari 508 artikel
PENGOLAHAN LIMBAH TEKSTIL (METHYLENE BLUE) MENGGUNAKAN ADSORBEN KARBON AKTIF KULIT MANGGIS (GARCINIA MANGOSTANA) TERAKTIVASI HIDROGEN PEROXIDE
Jurnal Inovasi Teknik Kimia
Vol 10
, No 4
(2025)
Textile wastewater is a major contributor to aquatic pollution because synthetic dyes such as Methylene Blue (MB) are toxic, persistent, and resistant to biodegradation. This study investigates the adsorption performance of activated carbon derived from mangosteen peel (Garcinia mangostana) activated with hydrogen peroxide (H₂O₂) for MB removal from aqueous solution. Activated carbon was prepared by carbonization at 850 °C, followed by chemical activation with diluted 50% H₂O₂. Adsorption tests...
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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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Literacy Assistance and Teaching of Short Surah of the Qur'an for Migrant Children at PKBM PNF Malaysia
wijayanti, berly
; Afidah, Layyinatul
; Saifuddin Azzudy, Muhammad
; Amanda Dewi, Reni
; Dian Pramuja, Alvin
; A'yun, Qurroti
; Idris, Haidar
; Ishari, Nurhafid
; Darwis, Mohammad
; Nadiyatul Firdausi, Putri
; Zahroh, Aminatuz
; Farid, Ahmad
Indonesian Journal of Empowerment and Community Service
Vol 6
, No 2
(2025)
ABSTRAK
Rendahnya literasi dasar dan kemampuan keagamaan anak-anak migran yang belum mendapatkan akses pendidikan formal maupun agama secara memadai, menjadi poin yang sangat utama terutama dalam sektor pendidikan. Kurangnya pemahaman agama, menjadikan anak-anak migran tidak dapat membaca bahkan menghafalkan surah pendek yang ada di Al-Qur’an. Penelitian ini bertujuan untuk mendeskripsikan proses pendampingan baca tulis dan pengajaran surah pendek Al-Qur’an kepada anak-anak migran PKBM PNF...
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The Effect of Tapioca Flour Substitution with Purple Sweet Potato Flour (Ipomoea batatas Blackie) on the Organoleptic Testing of Beef Meatballs
Bantara Journal of Animal Science
Vol 7
, No 2
(2025)
The increasing demand for processed meat products has driven innovation toward offerings that are not only delicious and practical but also more nutritious. Beef meatballs are among the most popular processed meat products, but they often contain tapioca flour as a filler, which is low in fiber and antioxidants. This study aimed to evaluate the effect of substituting tapioca flour with purple sweet potato (Ipomoea batatas blackie) flour on the organoleptic quality of beef meatballs. The research...
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Empowering EFL Learners’ Writing Skills through the Employment of Automated Peer Feedback
Educalingua Journal
Vol 3
, No 2
(2025)
Effective feedback provision is essential for enhancing EFL learners’ writing proficiency. Therefore, second language educators need to explore more varied and productive approaches to delivering writing feedback that supports learners’ continuous development. In this regard, the integration of automated peer feedback has emerged as a significant innovation in modern second language writing instruction. It enables learners to acquire richer insights, linguistic knowledge, and writing competencie...
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VISUAL REPRESENTATIONS ANALYSIS OF SENIOR HIGH SCHOOL BIOLOGY TEXTBOOKS ABOUT THE HUMAN MOVEMENT SYSTEM
Bioma : Jurnal Ilmiah Biologi
Vol 14
, No 2
(2025)
This study aims to identify the proportions and types of visual representations in Grade XI Biology textbooks, specifically on the topic of the Human Locomotion System. Visual content in Biology textbooks plays a crucial role in facilitating students’ understanding of biological concepts; however, previous studies have shown that such content remains limited in depth and rarely connects biological material to real-life contexts. The objective of this research was to examine the functions and for...
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Peran Self-Efficacy dan Dukungan Sosial pada Resiliensi Akademik Siswa SMP
EMPATI : Jurnal Bimbingan dan Konseling
Vol 12
, No 2
(2025)
Penelitian ini menganalisis peran efikasi diri dan dukungan sosial dalam membangun ketahanan akademik siswa SMP melalui kajian 12 artikel (2015-2025) menggunakan Systematic Literature Review (SLR) berbasis PRISMA dan visualisasi VOSviewer. Hasil penelitian menunjukkan bahwa efikasi diri berhubungan positif dengan ketahanan akademik, membantu siswa mengatur emosi, tetap termotivasi, dan mengembangkan strategi pemecahan masalah. Dukungan dari orang tua, teman sebaya, dan guru - melalui bantuan emo...
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Secure Visual Image Encryption Using Lorenz Chaos, Steganography, and Wavelet-Based Steganography Authentication
Advance Sustainable Science, Engineering and Technology
Vol 7
, No 4
(2025)
Medical images play a vital role in diagnosis and clinical decision-making, yet their transmission and storage pose significant privacy and security challenges. This research proposes a visual stego-encryption system that integrates the Lorenz chaotic algorithm with Discrete Wavelet Transform (DWT) to embed both secret medical data and a doctor's digital signature into a visually meaningful encrypted image (VMEI). The system employs dual-layer embedding and role-based access control, allowing ad...
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Determinasi Kepatuhan Wajib Pajak Orang Pribadi Berdasarkan Kesadaran, Pemahaman Perpajakan, dan Pemahaman Sanksi Pajak: Studi Kasus di KPP Pratama Klaten
KOMPAK : Jurnal Ilmiah Komputerisasi Akuntansi
Vol 18
, No 2
(2025)
Taxes serve as the primary source of state revenue and a crucial component in financing national development through the State Budget (APBN). This study examines the determinants of individual taxpayer compliance within the Klaten Primary Tax Office (KPP) in Central Java, with particular emphasis on the influence of awareness, comprehension of regulations, and understanding of tax sanctions. The research method uses a quantitative associative approach. Primary data were obtained by distributing...
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EFL Teachers’ Readiness in Implementing Artificial Intelligence Tools through Daily Classroom Basis
Journal of Emerging Technology in Teaching and Learning
Vol 1
, No 2
(2025)
With the exponential advancement of sophisticated artificial intelligence tools, second language educators need to embrace this inevitable educational shift by possessing a more comprehensive understanding of how to maximize the full benefits of these powerful, technology-driven learning supports in their regular teaching and learning enterprises. With respect to the above-mentioned notion, the researchers undertook this small-scale library study using a thematic analysis approach. With the supp...
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