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All Journal SMARTek Jurnal Teknologi Berkelanjutan Tadulako Science and Technology Journal
Nina Bariroh Rustiati
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Transportation

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Gerusan Lokal di Sekitar Abutment Jembatan Labuan Rustiati, Nina Bariroh
SMARTek Vol 5, No 3 (2007)
Publisher : SMARTek

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (596.815 KB)

Abstract

Secara alamiah, gerusan dihasilkan sebagai bagian dari perubahan morfologi sungai dan hasil bangunan buatan manusia. Percobaan laboratorium menunjukkan bahwa gerusan secara progresif merusak pondasi bangunan.  Tujuan penelitian ini adalah untuk mengetahui kedalaman gerusan lokal disekitar abutment jembatan Labuan pada kondisi banjir. Serta untuk menganalisa metode perlindungan gerusan menggunakan riprap. Hasil penelitian menunjukkan  bahwa untuk persamaan dari Garde dan Raju dihasilkan kedalaman gerusan 1.345 m untuk kala 50 tahun dan 1.224 m untuk kala 25 tahun. Sedangkan dari Hoffmans diperoleh 1.323 m untuk 50 tahun dan 1.224 m untuk 25 tahun. Metode perlindungan untuk gerusan lokal dengan riprap adalah tebal masing-masing filter 0.28 m, dengan ukuran batuan pertama 80 mm, kedua 50 mm dan ketiga 300 mm. Dimensi riprap panjang nya 30 m, lebar 12 m dan tinggi 1.4 m. Ukuran batuan 30.27 cm
Effect of Flow Discharge on Sedimentation in Paneki River Nadilla; Nina Bariroh Rustiati; Vera Wim Andiesse
Tadulako Science and Technology Journal Vol. 3 No. 2 (2023): Tadulako Science and Technology Journal
Publisher : LPPM Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/sciencetech.v3i2.17311

Abstract

Introduction: Paneki River has the potential for sedimentation caused by flow discharge. The condition of the river is getting wider every day which will threaten the risk of flooding if there is heavy rain with high intensity. The purpose of this study is to determine the return time flood discharge and basic sediment transport discharge in the Paneki river which can be used as a reference in planning sediment control buildings. Method: This research method includes primary data collection and secondary data collection, data management including calculating width, slope, design rainfall, design flood discharge, sieve analysis, and specific gravity. Then proceed to calculate the return time flood discharge using the Nakayasu synthetic unit hydrograph method and basic sediment transport using the Meyer-Peter and Muller method. Results and Discussion: From this research, the result of the 2-year return time flood discharge is 121.306 m3/det, for 5-year return time flood discharge is 185.069 m3 /det, for 10-year return time flood discharge is 209.261 m3 /det, for 25-year return time flood discharge is 312.359 m3 /det, and for 50-year return time flood discharge is 373.566 m3 /det. The results of basic sediment transport discharge per cross-section ranged from 0.0000861 m3 /det to 0.005641775 m3 /det. Conclusion: The study shows that sedimentation is influenced by flow discharge. The results of the calculation of flow discharge (Q) and bottom sediment transport (Qs) in Paneki River using the Meyer-Peter and Muller method resulted in Qs varying from 0.0000861 m³/det to 0.016551197 m³/det, according to the measured flow discharge. The greater the flow discharge, the greater the sediment transport, indicating a direct relationship between flow discharge and sedimentation.
Perbandingan Efektivitas Marchantia polymorpha dan Sphagnum spp. sebagai Bioindikator Timbal (Pb) di Kawasan Lalu Lintas Padat Kota Palu: Hubungan dengan Faktor Mikroklimat Wulandari, Ardini; Ishak, Muhammad Galib; Rustiati, Nina Bariroh; Alricha, Alricha; Salim, Awwalini Maghfirah; Amaludin, Moh. Baitullah
Jurnal Teknologi Berkelanjutan Vol 14 No 02 (2025): Vol 14 No. 02
Publisher : Lambung Mangkurat University Press

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Abstract

Air quality biomonitoring using moss as a bioindicator has been increasingly developed as an alternative to conventional monitoring methods, which generally require high costs, sophisticated equipment, and trained personnel. The purpose of this study is to compare the effectiveness of two types of moss, liverwort (Marchantia polymorpha) and peat moss (Sphagnum spp.), in absorbing lead (Pb) in environments with different levels of traffic-related pollution in Palu City, Central Sulawesi. The use of moss as a bioindicator is considered more efficient due to its biological traits that enable it to absorb pollutants directly from the atmosphere without vascular systems or protective cuticles. This study applied two approaches in Palu City: the first using Marchantia polymorpha placed in the Pertamina Martadinata gas station area, a site with high traffic intensity, and the second using Sphagnum spp. examined at the traffic light intersection of Jalan Suprapto, Besusu Tengah, as a location of vehicular emission accumulation. The research focused on the ability of moss to absorb Pb derived from transportation activities. In addition, environmental factors such as air temperature, humidity, wind speed, rainfall, and wind direction were analyzed to determine how microclimatic conditions influence heavy metal accumulation. The results showed that Marchantia polymorpha, with its broad thallus surface, effectively accumulated Pb in open urban environments. Meanwhile, Sphagnum spp., with its hyaline cell structure, exhibited a higher absorption capacity for both water and heavy metals, making it highly responsive to humidity variations and microclimatic conditions at the study sites. These findings confirm that both moss species serve as effective bioindicators, each with specific advantages. Liverwort is more adaptive in tropical urban environments with consistent vehicular pollution, whereas peat moss is superior in humid areas that allow higher absorption capacity. Therefore, the use of moss provides a cost-effective, practical, and sustainable biomonitoring approach for air pollution control.
Co-Authors Alricha, Alricha Amaludin, Moh. Baitullah Awwalini Maghfirah Salim Ishak, Muhammad Galib Nadilla Vera Wim Andiese Wulandari, Ardini