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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Journal of Green Complex Engineering
Marufah
Universitas Muhammadiyah Makassar
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Physics

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Tea Grounds and Coffee Grounds Support Sustainable Growth of Mustard Plants Darwis; Yusran; Asrijal; Asia Arifin; Marufah
Jurnal Penelitian Pendidikan IPA Vol 11 No 3 (2025): March
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i3.10874

Abstract

The concept of organic farming is an effort to maintain optimal levels of environmentally friendly production. Therefore, this research aims to determine the effect of adding tea dregs and coffee dregs to compost media alone or mixed as additional nutrients on the growth of mustard greens (Brassica juncea L.).  This research used a Completely Randomized Design (CRD) consisting of 4 treatments with 3 replications, namely compost without tea dregs and coffee dregs as control (P0). The research data were analyzed using Analysis of Variance (ANOVA) and Least Significant Difference Test (LSD) at a significance level of 5%. The results of the research obtained were that giving tea dregs and coffee dregs to the mustard plant planting medium obtained positive results. Single application of tea dregs had a significant effect on plant height (9.80 cm) and number of leaves (7.5). The treatment with tea dregs also had a significantly different effect from the control and other treatments. Meanwhile, coffee grounds alone contributed to a plant height of 7.1 cm and a number of leaves of 3.75, where the results obtained were not significantly different from the control and other treatments. However, overall, both single and mixed treatments had no significant effect on plant root length. The results of the ANOVA analysis for growth with the mustard plant height parameter obtained a value of Fcount of 4.496 > Ftable, namely 3.49, the parameter number of leaf blades Fcount 8.757 > Ftable, namely 3.49, and the root length parameter Fcount 0.367 < Ftable 3.49.
Head–Flow Response and Short-Term Repeatability of a Low-Cost PVC Hydraulic Ram Pump Amir Zainuddin; Marufah; Fauzan Hamdi; Nurilham Prasetia; Putri Arvianti Ramadani
Journal of Green Complex Engineering Vol. 4 No. 1 (2026): August
Publisher : Gio Architect

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59810/greenplexresearch.v4i1.274

Abstract

Hydraulic ram pumps use the energy of flowing water to lift a portion of that water without external power, yet their reported performance depends strongly on how head conditions and flow boundaries are defined. This study examined the head–flow response and short-term repeatability of a low-cost hydraulic ram pump constructed from nominal 2-inch PVC components and fitted with a nominal 3-inch, 0.60-m air chamber. Three operating configurations combined supply and delivery heads of 1.50/4 m, 1.70/5 m, and 1.90/6 m. Each configuration was evaluated through fifteen volumetric tests using a fixed collection volume of 100 L. Discharge was calculated for every replicate from collection volume and filling time, then assessed using descriptive statistics, 95% confidence intervals, one-way analysis of variance, Tukey comparisons, and a Kruskal–Wallis test. Mean measured discharge increased from 10.53 ± 0.23 L s−1 in the first configuration to 11.59 ± 0.18 and 13.92 ± 0.54 L s−1 in the second and third configurations, respectively. Differences among configurations were pronounced (F2,42 = 362.58, p < 0.001, η2 = 0.945). Estimated input-side hydraulic power rose from 154.7 to 259.0 W, whereas the intermediate configuration produced the lowest coefficient of variation (1.53%). The highest-head configuration favored throughput and available hydraulic power, while the intermediate state provided the most consistent short-duration measurements. Hydraulic efficiency could not be determined because drive, waste, and delivered flows were not measured separately.
Asymmetric Bank Erosion Reveals Geomorphic Susceptibility in the Pattalasang River, Indonesia Sri Winanda Arifin; Marufah; Muh Yunus Ali
Journal of Green Complex Engineering Vol. 4 No. 1 (2026): August
Publisher : Gio Architect

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59810/greenplexresearch.v4i1.292

Abstract

Riverbank erosion can alter channel geometry and progressively reduce bank support, yet reconnaissance studies often lack the hydraulic and geotechnical data required for formal stability modelling. This study evaluates whether simple field measurements can provide a defensible screening of geomorphic susceptibility along the Pattalasang River, South Sulawesi, Indonesia. Three cross-sections were examined: one comparatively stable baseline and two eroding sites. Cross-sectional areas were reconstructed by trapezoidal integration, erosion volumes were calculated from measured erosion dimensions, lateral concentration was expressed using an asymmetry index, and two grain-size distributions were compared descriptively. Quality control corrected a factor-of-four inconsistency in the original cross-sectional summaries, giving areas of 17.55, 14.70, and 13.25 m² for the baseline, Point I, and Point II. Erosion volume reached 74.96 m³ at Point I and 25.41 m³ at Point II. Left-bank erosion contributed 92.45% and 89.10% of site totals, with asymmetry indices of 0.849 and 0.782. Similar grain-size curves indicate that sediment gradation alone does not explain the 2.95-fold erosion contrast. The screening identifies Point I as the priority for repeat hydraulic and geotechnical assessment.
Co-Authors Amir Zainuddin Asia Arifin Asrijal Darwis Fauzan Hamdi Muh Yunus Ali Nurilham Prasetia Putri Arvianti Ramadani Sri Winanda Arifin Yusran Yusran