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All Journal Jurnal Darma Agung BERNAS: Jurnal Pengabdian Kepada Masyarakat Integrated Science Education Journal JOURNAL OF HUMANITIES, SOCIAL SCIENCES AND BUSINESS (JHSSB) Jurnal Ilman: Jurnal Ilmu Manajemen Journal of Artificial Intelligence and Digital Business Jurnal Audit dan Perpajakan Nusantara Technology and Engineering Review Skena Bisnis Al-Ashri: Ilmu-Ilmu Keislaman IJIS Edu : Indonesian Journal of Integrated Science Education
Saputra, Ahmad
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Studi Eksperimental Penambahan Zat Aditif Anti Stripping Agent pada Kinerja Campuran Aspal Karet (AC-WC) Saputra, Ahmad; Sazuatmo, Sazuatmo; Hariza, Elsa Rati
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 4 No. 4 (2026): November - January
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v4i4.4480

Abstract

Penelitian ini membahas pengaruh penambahan zat aditif terhadap campuran aspal karet (AC-WC) serta bagaimana stabilitas campuran berubah dengan penggunaan Anti Stripping Agent Wetfix BE. Variasi yang digunakan mencakup kadar aspal rencana 4,5%, 5%, 5,5%, dan 6%, serta kadar Wetfix BE sebesar 0,25%, 0,3%, 0,35%, dan satu campuran tanpa aditif pada lapisan Laston AC-WC. Data primer diperoleh melalui percobaan langsung di lokasi penelitian yang meliputi pemeriksaan karakteristik bahan, penentuan Kadar Aspal Optimum, dan pelaksanaan uji Marshall. Data sekunder dikumpulkan dari instansi terkait untuk memperkuat analisis dan membandingkan hasil pengujian. Hasil penelitian menunjukkan bahwa kadar aspal optimum untuk lapis permukaan AC-WC dengan aspal penetrasi 60/70 diperoleh sebesar 6,0%. Penggunaan Wetfix BE direkomendasikan pada kadar 3,5% karena dinilai mampu meningkatkan performa campuran aspal karet, terutama melalui peningkatan stabilitas. Pada pengujian Marshall, pembacaan nilai flow harus dilakukan secara teliti karena kesalahan pengukuran tidak dapat diperbaiki akibat kerusakan benda uji setelah proses penekanan. Untuk kondisi lalu lintas dengan beban berat, penggunaan Wetfix BE pada kadar 3,5% dianggap paling sesuai karena dapat meningkatkan ketahanan campuran AC-WC. Namun, penelitian ini juga menunjukkan bahwa pada kondisi tertentu, penambahan zat aditif justru dapat menurunkan stabilitas, sehingga pemilihan kadar aditif perlu disesuaikan dengan karakteristik material dan kebutuhan perkerasan.
Integration of PjBL-STEM and Virtual Laboratory as a Strategy to Enhance 21st Century Scientific Literacy in Junior High School Science Learning Saputra, Ahmad; Fandi, Real; Nurohman, Sabar; Natadiwijaya, Ismail Fikri; Wilujeng, Insih; Widowati, Asri; Damayanti, Herlina
IJIS Edu : Indonesian Journal of Integrated Science Education Vol 8, No 1 (2026): January 2026
Publisher : UIN Fatmawati Sukarno Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29300/ijisedu.v8i1.9287

Abstract

This study aims to analyze the effectiveness of integrating Project-Based Learning (PjBL) with Science, Technology, Engineering, and Mathematics (STEM) and virtual laboratories in enhancing 21st-century scientific literacy among junior high school students. A quasi-experimental design employing a one-group pretest–posttest model was used, involving 25 seventh-grade students from SMP Negeri 11 Yogyakarta. Data were collected using a scientific literacy test encompassing three dimensions: explaining phenomena scientifically, interpreting data and scientific evidence, and evaluating and using scientific information. The results revealed a significant difference between pretest and posttest scores (p < 0.05), with a normalized gain score of 0.62 categorized as medium. The greatest improvement occurred in the dimension of explaining phenomena scientifically (0.83), followed by interpreting data and scientific evidence (0.67), and evaluating and using scientific information (0.58). The integration of PjBL-STEM with virtual laboratories enhanced students’ conceptual understanding, scientific reasoning, and inquiry skills through interactive and contextual learning experiences. These findings demonstrate that the hybrid PjBL-STEM model, supported by virtual laboratory simulations, effectively promotes 21st-century scientific literacy. Moreover, this study provides empirical evidence on how the integration of PjBL-STEM and virtual laboratories can bridge the gap in scientific literacy development within Indonesian secondary education.
PENGARUH BEBAN KERJA DAN LINGKUNGAN KERJA TERHADAP KINERJA PERAWAT GENERASI Z DI MEDIASI OLEH STRES KERJA PADA RSUD DR. PIRNGADI MEDAN Zahra, Aqilla Ulayya; Saputra, Ahmad; Julfizar
Skena Bisnis Vol. 3 No. 1 (2026): Skena Bisnis Journal (SB)
Publisher : Fakultas Ilmu Sosial Dan Humaniora, Universitas Ibbi

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Abstract

This study aims to analyze the effect of workload and work environment on the performance of Generation Z nurses at Dr. Pirngadi Regional General Hospital, Medan, with job stress as a mediating variable. Using a quantitative approach with path analysis on 61 respondents, data were collected through validated and reliable questionnaires. The results show that workload and work environment significantly and positively affect job stress and performance, while job stress negatively affects performance. Moreover, job stress mediates the relationship between workload, work environment, and performance. These findings suggest that balanced workload management and a supportive work environment can reduce stress and enhance nurse performance.
Co-Authors Afifudin, Mehmed Tegar Almastoni, Almastoni Andi Herman Jaya Anggono Anggono, Anggono Antuni Wiyarsi Ari Irawan Asri Widowati Astuty, Fuji Barus, Alexander Damayanti, Herlina Dini, Siti Fajrillah Fandi, Real Febriani, Afifah Ginting, Rahelina Hariza, Elsa Rati Hutagalung, Slandia Desi Juliana Insih Wilujeng Julfizar Juliana, Mery M. Lutfi Manihuruk, Candra Mardi, Anton Mardiana, Puja Dikusuma Nasution, Siti Aisyah Natadiwijaya, Ismail Fikri Nazmi, Hendra Nurhaliza, Pioni Pratama, Andra Pudyastuti, Esty Sabar Nurohman Sazuatmo Sazuatmo, Sazuatmo Seri Idahnaita Ginting, Ripka Sinaga, Annisa Nauli Siregar, Indra Siregar, Melinda Siska, Maudi Supantri , Leonardo Tallesang, M. Tarwiyah, Tarwiyah Teng, Sauh Hwee Yunus, Santi Yusdiana, Yusdiana Zahra, Aqilla Ulayya Zainal Asril