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Menampilkan 31–40 dari 1761 artikel
Development of a Web-Based Chemical Laboratory Inventory System Using the Prototype Model
Pengelolaan inventaris pada laboratorium kimia yang masih dilakukan secara manual berpotensi menimbulkan berbagai permasalahan seperti kesalahan pencatatan stok, ketidaksesuaian data, serta keterlambatan dalam penyusunan laporan. Kondisi tersebut dapat menghambat efektivitas pengelolaan barang masuk dan keluar serta menyulitkan proses monitoring ketersediaan stok. Penelitian ini bertujuan untuk merancang dan mengembangkan sistem informasi inventory laboratorium kimia berbasis web guna mendukung...
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Microencapsulation of Phycocyanin from Spirulina platensis by Freeze-Drying: Optimization of Maltodextrin–Soy Protein Matrices for Enhanced Stability and Antioxidant Functionality
Marlina, Dian
; Saputra, Ryan Werytama
; Aji Prasetyo, Takad Bagas
; Muhamad Ansory, Hery
; Aisiyah, Siti
; Purwaningsih, Desi
Phycocyanin, a natural blue pigment from Spirulina platensis, exhibits strong antioxidant activity but is highly unstable under light, heat, and pH variations, limiting its practical applications. This experimental study addresses the lack of systematic optimization data on maltodextrin–soy protein isolate (SPI) wall matrices for phycocyanin microencapsulation via freeze-drying. Phycocyanin was extracted using phosphate buffer and encapsulated at different maltodextrin:SPI ratios (9:1, 8:2, and...
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Peran Mediasi Penerapan Sistem E-Filing terhadap Keterkaitan Sikap terhadap E-Filing dan Kepatuhan Wajib Pajak
KOMPAK : Jurnal Ilmiah Komputerisasi Akuntansi
Vol 32
, No 1
(2026)
This study aims to examine the extent to which taxpayers’ attitudes toward e-filing influence tax compliance, with the implementation of e-filing positioned as a mediating variable among employees of PT Selalu Cinta Indonesia (SCI) registered at the Primary Tax Office (KPP Pratama) of Salatiga City. The population comprised 18,244 employees, from which a sample of 100 respondents was selected using purposive sampling. Data were processed and analyzed using simple linear regression and path analy...
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Miniature Medical Car Didukung dengan Pulse Arm Band Berbasis Algoritma XGBoost dalam Deteksi Pola Abnormal Detak Jantung
Walidin, Adamsyach Prana
; Kiswanto, Dedy
; Zai, Tri Sapta Warman
; Sagala, Fafmi
; Walidin, Adamsyach Prana
; Kiswanto, Dedy
; Zai, Tri Sapta Warman
; Sagala, Fafmi
Peningkatan kasus gangguan kardiovaskular menuntut adanya sistem pemantauan detak jantung yang tidak hanya akurat, tetapi juga mampu memberikan respons cepat terhadap kondisi abnormal. Penelitian ini bertujuan mengembangkan sistem pemantauan detak jantung berbasis Internet of Things (IoT) yang terintegrasi dengan algoritma Extreme Gradient Boosting (XGBoost) untuk mendeteksi pola detak jantung abnormal secara real-time serta memicu respons otomatis melalui Miniature Medical Car. Metode penelitia...
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Viscosity Modeling of MES and SLS Using Machine Learning Method
Fathaddin, Muhammad Taufiq
; Setiati, Rini
; Akbar, Fahrurrozi
; Sumirat, Iwan
; Bharoto
; Ramadhan, Ranggi Sahmura
; Onnie Ridaliani Prapansya
; Ristawati, Arinda
Viscosity is crucial to improve the efficiency of injected fluids for oil displacement in reservoirs. Traditionally, research has focused on polymers that help reduce the mobility of injected fluids, while surfactant viscosity has received less consideration. This research investigated the viscosity behavior of methyl ester sulfonate (MES) and sodium lauryl sulfate (SLS) surfactant solutions using a machine learning method—adaptive neurofuzzy inference system (ANFIS). This study aimed to predict...
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Antibacterial activity of miana (Coleus scutellarioides) against Streptococcus pyogenes and Streptococcus mutans
Miana leaves (Coleus scutellarioides) have compounds that have the potential to be antibacterial. The bacteria Streptococcus pyogenes and Streptococcus mutans are a group of positive bacteria containing a lipid layer that is low in peptidoglycan and teichoic acid. This study aims to determine the antibacterial activity of Miana leaves against Streptococcus pyogenes and Streptococcus mutans because both types of infectious bacteria. This research used the disc diffusion method. The preparation in...
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The Phylogenetic analysis of representative mammalian MUC16 supported by comparative SEA domain and tandem repeat variation
MUC16 is one of the largest mammalian mucins and exhibits substantial evolutionary variation in both sequence composition and structural modularity. Comparative analysis of SEA domain composition and tandem repeat architecture is therefore essential for understanding the evolutionary diversification of this gene across mammals. This study investigates the phylogenetic relationships of mammalian MUC16 and examines how variation in SEA domains and tandem repeats contributes to lineage-specific str...
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A The Impact of Tourism Regulations on Tourist Visit Performance: A Comparative Analysis of Indonesia and Singapore
Tourism regulations play a critical role in shaping destination competitiveness and influencing tourist travel decisions, yet empirical evidence on their effectiveness across different institutional contexts remains limited. This study investigates the impact of tourism regulations on tourist visit performance through a comparative quantitative analysis of Indonesia and Singapore. Using panel data covering the period 2010–2023, this research employs a fixed-effects regression model to examine th...
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Exploring the Satisfaction–Revenue Nexus: A Mixed-Methods Analysis of RevPAR Performance in Southeast Asian Three-Star Hotels
This research aims to explore the satisfaction–revenue nexus by examining the effect of tourist satisfaction on Revenue Per Available Room (RevPAR) performance in three-star hotels across Southeast Asia. Grounded in Expectation–Confirmation Theory and the Service-Profit Chain framework, the study conceptualizes tourist satisfaction as a strategic intangible asset that contributes to financial performance through both direct and indirect mechanisms. A mixed-methods sequential explanatory design w...
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Mechanical Performance of Recycled Plastic-Based Paving Blocks with Sand and Fly Ash Fillers
Qomaruddin, Mochammad
; Fakhriyan, Adi Noor
; Saputro, Yayan Adi
; Priastiwi, Yulita Arni
; Fatchur Roehman
; Nasyiin Faqih
; Arif Hidayat
; Akhmad Firdos Khoiril Khitam
Advance Sustainable Science, Engineering and Technology (ASSET)
Vol 8
, No 2
(2026)
The use of recycled plastic waste as a binder for paving blocks has been reported in a number of previous studies. However, most of these studies focus on feasibility and do not clearly explain how different plastic types behave mechanically over time. In this study, the compressive strength performance of paving blocks made from polypropylene (PP), polyethylene terephthalate (PET), and high-density polyethylene (HDPE) was experimentally compared using sand or fly ash as fillers. All mixtures we...
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