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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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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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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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Hybrid Deep and Machine Learning Framework for Cloud and Shadow Segmentation in Landsat-8 Imagery
Advance Sustainable Science, Engineering and Technology (ASSET)
Vol 7
, No 4
(2025)
Cloud and shadow interference in satellite imagery reduces the quality and reliability of remote sensing data. The traditional method would face issue to predict data near the shadow and cloud. To address this challenge, this study is focus improve the accuracy the area near shadow and cloud detection in Landsat-8 imagery. The implementation of hybrid module using standard CNN and U-Net CNN and a machine learning model using K-Nearest Neighbors (KNN) on SPARCS and CCA18 Landsat 8 dataset. A hybr...
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Pengaruh Etos Kerja, Motivasi Intrinsik, Dan Kepuasan Kerja Terhadap Kinerja Karyawan
EBISNIS : JURNAL ILMIAH EKONOMI DAN BISNIS
Vol 18
, No 2
(2025)
Penelitian ini bertujuan untuk menganalisis pengaruh etos kerja, motivasi intrinsik, dan kepuasan kerja terhadap kinerja karyawan di perusahaan-perusahaan yang beroperasi di Kota Cirebon. Kinerja karyawan menjadi salah satu indikator penting dalam menjamin keberlangsungan dan daya saing perusahaan. Namun, ketidaksesuaian antara potensi sumber daya manusia dan hasil aktual di lapangan masih sering terjadi, ditandai dengan rendahnya produktivitas, tingginya turnover, serta loyalitas karyawan yang...
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Analisis Strategi Promosi Penjualan pada Marketplace Shopee BMA Baju Murah Anak
EBISNIS : JURNAL ILMIAH EKONOMI DAN BISNIS
Vol 18
, No 2
(2025)
Penelitian ini bertujuan untuk menganalisis strategi promosi penjualan yang diterapkan oleh BMA (Baju Murah Anak) pada marketplace Shopee. Meskipun telah melakukan berbagai upaya promosi, penjualan BMA cenderung fluktuatif dan belum mencapai target yang diharapkan. Penelitian ini menggunakan pendekatan kualitatif deskriptif dengan teknik pengumpulan data melalui observasi, wawancara, dan dokumentasi. Penelitian terfokus pada empat strategi promosi utama yaitu pemberian, paket harga, pengembalian...
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Utilization of Chicken Bone Waste into Calcium Fertilizer in SMK N 1 Mojosongo Boyolali
Indonesian Journal of Empowerment and Community Service
Vol 6
, No 2
(2025)
This community service activity was carried out with the aim of providing an introduction to the utilization of chicken bones waste, targeting Gen Z in this case students of SMK Negeri 1 Mojosongo, so that it can increase the motivation and interest of Gen Z in the waste management sector through interesting activities. The existing activity method is carried out by holding counseling or socialization and training. This community service activity was attended by 28 students of SMK Negeri 1 Mojos...
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Product Design Training with Solidworks in the Effort of Student Independence at SMK 5 Surakarta
Indonesian Journal of Empowerment and Community Service
Vol 6
, No 2
(2025)
Surakarta 5 Vocational High School was an educational institution committed to improving students' digital skills and adapting to technological developments. In response to the needs and problems faced, this community service activity aims to organize product design training using SolidWorks software for students. This activity was expected to equip students with digital skills that were relevant to the industrial world, while fostering an entrepreneurial spirit. The training method includes del...
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Pengaruh Budaya Organisasi, Kepuasan Kerja, dan Kompensasi Finansial Terhadap Kinerja Karyawan PT. Kereta Api Indonesia
EBISNIS : JURNAL ILMIAH EKONOMI DAN BISNIS
Vol 18
, No 2
(2025)
Hubungan antara budaya organisasi, kepuasan kerja dan kompensasi finansial terhadap kinerja karyawan PT Kereta Api Indonesia (Persero) Daop 3 Cirebon adalah subjek penelitian ini. Pendekatan kuantitatif diterapkan dalam penelitian ini, dengan menggunakan analisis regresi berganda yang diolah melalui perangkat lunak SPSS versi 26. Penelitian ini melibatkan sampel sebanyak 111 orang yang terpilih secara acak dari 153 orang populasi dalam penelitian. Budaya organisasi dan kepuasan kerja memberikan...
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