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All Journal Journal of Geoscience, Engineering, Environment, and Technology Pendas : Jurnah Ilmiah Pendidikan Dasar Jurnal Inovator Jurnal Kreatif : Desain Produk Industri dan Arsitektur Jurnal Abdi Masyarakat Multidisiplin JPOL: Journal of Pedagogy and Online Learning Jurnalika : Jurnal Ilmu Komunikasi Indonesian Journal of Chemical Engineering Jurnal Akademik Pengabdian Masyarakat JOURNAL OF COMMUNITY SERVICE AND APPLICATION SCIENCE (JCSAS) Scientific Contributions Oil and Gas
Novrianti
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Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Other

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EFEKTIVITAS MULTIMEDIA INTERAKTIF PADA MATERI SISTEM PERNAPASAN MANUSIA MATA PELAJARAN IPA TERHADAP HASIL BELAJAR SISWA KELAS VIII SMPN 1 LUNANG Nensy Purziana; Fetri Yeni J; Novrianti; Rahmi Pratiwi
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 10 No. 03 (2025): Volume 10 No. 03 September 2025 Terbit
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v10i03.32494

Abstract

The background of this research is based on the fact that students' learning outcomes in this topic are still relatively low. This is caused by the teaching method still being conventional, such as lecturing, without the support of media that can concretely and interactively visualize biological processes. As a result, students face difficulties in understanding abstract concepts such as the mechanism of gas diffusion in the alveoli, as well as the structure and function of the human respiratory organs.This study employs a quantitative approach with a pre-experimental research type and a One Group Pretest-Posttest design. The research sample consisted of eighth-grade students selected using purposive sampling techniques. The research instrument was a multiple-choice test consisting of 25 items, administered twice—before (pretest) and after (posttest) the implementation of learning using interactive multimedia. The collected data were analyzed using descriptive and inferential statistics to observe the differences in student learning outcomes before and after the treatment.The results of the study indicated a significant increase in posttest scores compared to pretest scores. This suggests that the use of interactive multimedia is effective in improving students’ learning outcomes on the topic of the human respiratory system. Interactive multimedia is considered capable of presenting material in a more engaging, visual, and communicative manner, allowing students to more easily grasp complex and unseen concepts. In addition, this media also enhances students’ motivation, active involvement, and independence during the learning process. Based on these findings, it can be concluded that interactive multimedia is an effective learning tool to improve student outcomes, especially in science subjects that require conceptual understanding and visualization of biological processes. Therefore, it is highly recommended that interactive multimedia be integrated into the learning process at schools to improve overall education quality.
The Laboratory Investigation of the Effect of Calcium Chloride (CaCl₂) Derived from Duck Eggshells on the Thickening Time and Strength of Drilling Cement Novrianti; Rico, Muhammad; Khalid, Idham; Purnamawati, Neneng; Herawati, Ira
Journal of Geoscience, Engineering, Environment, and Technology Special Issue from The 2nd International Conference on Upstream Energy Technology and Digitalization
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.1.1.24246

Abstract

The thickening time and mechanical strength are vital in the performance of the drilling cement and are usually tested by API standards. The paper determines the role of duck eggshells' calcium chloride (CaCl2) as a natural accelerator on the cement slurry properties. CaCl2 was prepared by a regulating reaction between eggshell powder and 1M HCl and then was mixed with the Class G cement at the 1%, 2%, 3%, and 4% weight proportions. The experimental findings show that the most preferred performance is observed when the CaCl2 is 4 percent, which reduces thickening time to 128 minutes and increases compressive strength to 4,464.62 psi and shear bond strength to 370.28 psi. These results imply that using waste materials as the source of CaCl2 bio-based accelerators would be a viable source that would be environmentally viable in the optimization of drilling cements
Evaluating Petrographic and Mechanical Property Correlations in Sihapas Formation for High-Pressure Hydraulic Fracturing Using Pearson and Spearman Methods Prayitno, Budi; Akhillah, Daffa; Novrianti; Fitiransyah, Dike; Panuh, Dedikarni
Scientific Contributions Oil and Gas Vol 49 No 1 (2026)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v49i1.1999

Abstract

This study aimed to evaluate the suitability of natural frac sand (SiO₂) from the Sihapas Formation as a proppant for hydraulic fracturing in unconventional oil and gas reservoirs in Riau Province, Indonesia. Quantitative–qualitative evaluation in hydraulic fracturing systems is conducted to assess the performance of quartz grains (SiO₂) in enhancing and maintaining fluid flow conductivity under the influence of stress, formation blockage, and chemical interactions. Sieve distribution analysis was performed to determine particle size distribution, crush resistance testing was conducted to evaluate mechanical strength, and X-Ray Diffraction (XRD) was used to characterize mineral composition. The correlative relationships among parameters were further analyzed using Pearson and Spearman statistical methods, with API RP 56 (frac sand) and API 19C (proppant) standards serving as benchmarks. The results showed that the 40/70 mesh fraction dominates across samples, though roundness values fall below specification thresholds while sphericity remains within acceptable ranges. Grain hardness testing at 5000 psi showed relatively high destruction rates, while mineralogical analysis confirmed a consistently high SiO₂ composition (≥98%) with secondary clay minerals. Elevated turbidity and alkaline pH values were also observed. Statistical analysis showed strong correlations among parameters, reflecting the influence of geological transport processes on grain morphology and mineral decomposition due to diagenetic processes. In general, these findings showed that natural frac sand samples do not fully meet API standards, highlighting the need for innovation and direct well testing to enhance material quality for hydraulic fracturing applications.
Co-Authors Aditya Padini Syah Akhillah, Daffa Ayyi Husbani Baehaqi Budi Prayitno Daumi Rahmatika Dedikarni Fetri Yeni Fetri Yeni J Fitiransyah, Dike Fitri Nurzana Handayani, Corry Hari Purnomo Husbani, Ayyi Imam Bayhaqi Imelda Adima Putri Indrawaty , Novi Ira Herawati, Ira Irwan Anwar Lisa Candra Sari Martin Kustanti Meldi Ade Kurnia yusri Melysa, Richa Nadilla Neneng Purnamawati Nensy Purziana Novrianti Ochi Willya Chevrananda Pangestu, Dwi Maulan Rahmi Pratiwi Rezki Amelia Richa Melysa RICO, MUHAMMAD Rindi Wulansari Siti Badariah Teguh Sahibillah Alfajri wahyudi. S, fazril wahyudi.s Widia Ierdiana Yolly Adriatic Zen, Zelhendri Zuwirna