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All Journal JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Indonesian Journal of Pharmaceutical Research Jurnal Teknik Sipil
Aprilianda, Aprilianda
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Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Industrial & Manufacturing Engineering Medicine & Pharmacology Public Health

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Physical Properties of Bioplastic Composite Synthesized from Sago Waste and Betung Bamboo Activated Carbon Aprilianda, Aprilianda; Budiman, Ismail; Kurniati, Mersi; Sari, Yessie Widya
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 8, No 3 (2023): September 2023
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v8i3.1885

Abstract

Bioplastics are expected to reduce the use of commercial plastics. Several efforts have been made to improve the properties of bioplastics, including the addition of antioxidants or antimicrobial agents. One of the antimicrobial agents is activated charcoal or activated carbon. This study was aimed to investigate the effect of activated carbon addition to the bioplastic composite. Sago waste was utilized as the matrix in the composite, while activated carbon was as filler. Sago waste is the leftover biomass resulted from the sago extraction. The proximate analysis showed that the composition of sago waste was mostly dominated by the fibrous materials followed by protein and fat. The activated carbon was obtained from the treatment of Betung bamboo. The Fourier Transform Infrared (FTIR) spectroscopy indicated that the thermal treatment of Betung bamboo at 175 °C for 5 h resulted The treated sago waste  was immersed in 5% KOH  for 24 h and further dried and then pyrolyzed at 750 °C for 90 min to yield activated carbon. The activated carbon was dominated by the carbonaceous materials. This was also supported by the proximate data indicating the presence of 91% carbonaceous materials in activated carbon.  The Brunauer Emmett Teller (BET) analysis showed that the activated carbon has surface area of 460 m2/g. This activated carbon was then used as filler at bioplastic composites. Two levels of activated carbon percentage on composite were tested, which were 3-5% (% m/v). The mechanical analysis using universal testing machine indicated that the addition of activated carbon reduces the tensile strength and modulus of elasticity. The scanning electron microscopy (SEM) images clearly indicated the presence of activated carbon on the surface of bioplastics.  The data obtained in this study showed the potential of composite sago waste and activated carbon as bioplastics. Further, the activated carbon obtained in this study can serve as an adsorbent, providing possible applications as antibacterial agent. Keywords – Activated Carbon, Biomass, Bioplastic, Composite, Pyrolysis, Sago Waste.
Karakteristik Parameter Kuat Geser Tanah pada Lereng Akibat Perubahan Kadar Air Tanah Amalia, Ghina; Minaka, Utari Sriwijaya; Aprilianda, Aprilianda
Jurnal Teknik Sipil Vol 21 No 1 (2025): Jurnal Teknik Sipil
Publisher : Universitas Kristen Maranatha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28932/jts.v21i1.7509

Abstract

The slope failure that occurred on the slope is indicated to be caused by an increase in soil mass due to the increase in water content filling the soil pores, which affects the soil properties, especially shear strength as one of the mechanical properties of soil. This study aims to analyze the effect of changes in soil water content on the shear strength of the slope. The study used disturbed soil samples taken at the edge of the slope on the Manna-Pagaralam Road section and were dried. Compaction testing was conducted to obtain the optimum water content (OWC) value, which represents the middle value of the variation in soil water content in the test samples. The variation of the test samples includes OWC-20%OWC, OWC-10%OWC, OWC, OWC+10%OWC, and OWC+20%OWC. The shear strength of the soil was obtained through Direct Shear testing. According to the USCS standard, the soil is classified as sandy clay soil. The Direct Shear testing results showed the highest cohesion (c) value in the OWC variation or at the Optimum Water Content variation, which is 2.796 kPa. This is because the cohesion value occurs in the fine particles, namely clay, which is influenced by the intergranular water content. Meanwhile, the highest internal friction angle value was obtained in the OWC-10%OWC variation, which is 32.15o. This is because the internal friction angle value occurs in the coarse particles, namely sand particles, where friction decreases as the water content filling the soil pores increases.
LEVEL OF KNOWLEDGE AND ATTITUDE TOWARDS ANTIBIOTIC USE IN THE COMMUNITY OF JORONG SIMPANG EMPAT NAGARI LINGKUANG AUA DISTRICT OF WEST PASAMAN Rosa, Rida; Aprilianda, Aprilianda; Desvera, Isna; chairunisa, ully
Indonesian Journal of Pharmaceutical Research Vol 5, No 2 (2025): Indo J Pharm Res 2025 5 (2)
Publisher : Department of Pharmacy, Muhammmadiyah University of Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31869/ijpr.v5i2.7738

Abstract

Abstract: Antibiotics are used to prevent and treat infections, their use must be in accordance with a doctor's prescription. The use of antibiotics that are not in accordance with a doctor's prescription will have negative impacts such as resistance to one or more antibiotics, increased side effects of drugs and increased costs in antibiotic treatment. This study aims to determine the level of antibiotic knowledge and attitudes towards the correct use of antibiotics in the community of Jorong Simpang Empat Nagari Lingkuang Aua Kabupaten PasamanBarat. This study is a descriptive study that is observational with a cross-sectional approach to 100 respondents who meet the inclusion criteria. The results of the study obtained were the level of antibiotic knowledge in the community of Jorong Simpang Empat which was included in the good category 53%, the sufficient category 16%, the less category 31% and for the attitude of antibiotic use in the community of Jorong Simpang Empat the good category 59%, the sufficient category 38%, the less category 3% And there is a significant relationship between the level of knowledge and attitudes towards the use of antibiotics with a significance value of 0.001Keywords: level of knowledge, attitudes, antibiotics
Co-Authors Amalia, Ghina Budiman, Ismail Chairunisa, Ully Desvera, Isna Mersi Kurniati Minaka, Utari Sriwijaya rosa, rida Yessie Widya Sari