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All Journal Borneo Engineering: Jurnal Teknik Sipil Journal of Pharmaceutical and Sciences.
Juliana, Intan
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Nursing Public Health

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Pengaruh variasi konsentrasi terhadap uji sifat fisik dan stabilitas freeze- thaw cycling pada formula sediaan gel kombinasi ekstrak daun kelor dan ekstrak daun jeruk nipis Juliana, Intan; Fatmawati, Annisa; Munir, Muhammad Abdurrahman; Emelda, Emelda; Rahmawati, Feti
Journal of Pharmaceutical and Sciences JPS Volume 7 Nomor 1 (2024)
Publisher : Fakultas Farmasi Universitas Tjut Nyak Dhien

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36490/journal-jps.com.v7i1.188

Abstract

Moringa leaves are a major source of antioxidant compounds due to their high content in carotenoids, ascorbic acid, glucosinolates and other bioactives. Lime contains elements of useful chemical compounds, such as alkaloids, polysaccharides, flavonoids, and essential oils. This study aims to obtain a gel formula that is physically stable and stable during storage using the Freeze-Thaw Cycling method from Moringa leaf extract and lime leaf extract. This research is a laboratory experimental research. Gel preparation was carried out with varying concentrations of Moringa leaf extract and lime leaf extract F1 (75%:25%), F2 (50%:50%), and F3 (25%:75%). Testing the physical properties of the gel includes organoleptic, pH, homogeneity, viscosity, spreadability, adhesion and syneresis. The stability test carried out was a stability test using the Freeze-Thaw Cycling method for 3 cycles by observing the stability to be carried out where each cycle observed physical changes in the gel including organoleptic, homogeneity and pH. The results of gel preparations of the combination of ethanol extract of moringa leaves and lime leaves of formulations 1, 2, and 3 with differences in the concentration of the active substance were declared stable, because there was no significant change from organoleptic observations, homogeneity, pH, adhesion and spreadability. However, statistical tests stated that the 4℃ temperature adhesion test obtained a p value (<0.05) and a 40℃ temperature p value (>0.05), while the 4℃ and 40℃ temperature spreadability test obtained a p value (<0. 05).
Analisis Stabilitas Lereng Menggunakan Matras dan Cerucuk Bambu pada Projek X Cahya, Musyaffa Esa; Juliana, Intan; Yelvi, Yelvi; Agung, Putera Agung Maha; Adinegara, Aldo Wirastana; Pramusandi, Sony; Hasan, Muhammad Fathur Rouf; Faizal, Rahmat
Borneo Engineering: Jurnal Teknik Sipil Volume 9 Nomor 3 Tahun 2025
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/be.v9i3.336

Abstract

The construction of PT. X' depot in Langsa City, Aceh, is located on soft clay soil that requires slope stability analysis for the embankment. This research aims to analyze slope stability using bamboo mattresses and piles as reinforcement to improve the safety factor. The analysis was conducted using manual calculations (Bishop method) and GeoStudio software (also using the Bishop method), under both static conditions and seismic influence (pseudostatic approach with a horizontal seismic coefficient (kh) = 0.18). The manual calculation results showed that the unreinforced slope had a safety factor (SF) of 1.1428 < 1.25 (unstable), which decreased to 0.6711 < 1.1 (unstable) under seismic load. Meanwhile, the GeoStudio software analysis indicated that the unreinforced slope had an SF of 1.256 > 1.25 (stable) but dropped to 0.903 < 1.1 (unstable) under seismic load. The use of 1–4 layers of bamboo piles and matting increased the SF to 1.318–1.35 without seismic influence. Under seismic conditions, the SF of the slope reinforced with 1–4 layers of bamboo piles and matting improved to 0.931–0.97. However, the slope was still considered critical during an earthquake (SF < 1.1).
Co-Authors Adinegara, Aldo Wirastana Cahya, Musyaffa Esa emelda, emelda Faizal, Rahmat Fatmawati, Annisa Muhammad Abdurrahman Munir Muhammad Fathur Rouf Hasan Putera Agung Maha Agung Rahmawati, Feti Sony PRAMUSANDI Yelvi Yelvi