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All Journal Jurnal Kewirausahaan, Akuntansi, dan Manajemen TRI BISNIS CSID Journal of Infrastructure Development
Mahendra, Alloysius Pamurda Dhika
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Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Engineering Social Sciences

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Seasonal Variability on Microplastic Polutions In Water and Sediment of Ciliwung River Wilyalodia, Hefty Clarissa; Tybeyuliana, Elgrytha Victoria; Mahendra, Alloysius Pamurda Dhika; Pratama, Mochamad Adhiraga; Rahmawati, Suphia; Iresha, Fajri Mulya; Moersidik, Setyo Sarwanto
CSID Journal of Infrastructure Development Vol. 6, No. 2
Publisher : UI Scholars Hub

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Abstract

Microplastics, recognized as emerging contaminants, have been detected in numerous rivers globally. This study focuses on the Ciliwung River in Jakarta, examining the influence of seasonal variations—specifically the rainy and dry seasons—on microplastics' concentration, types, and colors. Sampling was conducted during November 2022 (dry season) and March 2023 (wet season) using a plankton net for water (10 liters) and an Ekman grab sampler for sediment (400 mililiters). Microplastic abundance was analyzed following the National Oceanic and Atmospheric Administration (NOAA) adaptation method, and their material characteristics were identified using Fourier Transform Infrared Spectroscopy (FTIR) testing. Results revealed a notable seasonal impact: in the dry season, average microplastic abundance was 530 particles/liter in water and 859 particles/100 grams in sediment, whereas, in the wet season, these figures rose to 1,111 particles/ liter and 1,583 particles/100 grams, respectively. Fragments were the predominant type of microplastics, and black was the dominant color in both seasons. This consistency suggests similar sources and activities contributing year-round to microplastic pollution in the Ciliwung River.
The Impact of Advertising Content on Purchase Intention: The Mediating Role of Brand Awareness and Brand Image with Generation Z Moderation Cahaya, Yohanes Ferry; Mahendra, Alloysius Pamurda Dhika; Pujiati, Herni; Armanda, Ilham Nawang
JURNAL KEWIRAUSAHAAN, AKUNTANSI DAN MANAJEMEN TRI BISNIS Vol 8 No 1 (2026): Jurnal Kewirausahaan, Akuntansi dan Manajemen Tri Bisnis (JKAMTB)
Publisher : STIE Tri Bhakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59806/jkamtb.v8i1.749

Abstract

This study examines the influence of advertising content on purchase intention among 500 consumers in Jakarta, Indonesia, focusing on Generation Z as a moderating factor. Employing Partial Least Squares Structural Equation Modeling (PLS-SEM), we investigate the mediating roles of brand awareness and brand image in the advertising- purchase intention relationship. Results demonstrate that advertising content significantly affects purchase intention both directly and indirectly through brand awareness and brand image. Generation Z membership significantly moderates these relationships, amplifying the effects of advertising content on brand outcomes. These findings contribute to advertising effectiveness theory and provide actionable insights for marketers targeting digitally- native consumers in emerging markets. The comprehensive model explains substantial variance in purchase intention, offering practical implications for developing generation-specific marketing strategies.
Co-Authors Armanda, Ilham Nawang Iresha, Fajri Mulya Pratama, Mochamad Adhiraga Pujiati, Herni Rahmawati, Suphia Setyo Sarwanto Moersidik Tybeyuliana, Elgrytha Victoria Wilyalodia, Hefty Clarissa Yohanes Ferry Cahaya