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Makara Journal of Science
Scopus
ISSN 2339-1995 · Universitas Indonesia · 174 articles in the index
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Journal Article
Application of a Photoacoustic Tomography System: A Case Study on the Monitoring of Pig Tissue Decomposition
Pig carcasses have been used in forensic research because they share several similarities to human cadaver, including decomposition. In several studies, the decomposition of pig’s cadaver for a certain time can be used as a model to determine the time of death of a human. This study was conducted…
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Journal Article
Effect of Applied Pressure During Sintering on the Densification and Mechanical Properties of SiCf/SiC Composites Prepared by Electrophoretic Infiltration
SiC-fiber-reinforced SiC matrix ceramic (SiCf/SiC) composites were successfully fabricated by electrophoretic infiltration and sintering at various applied pressures. The effect of applied pressure (i.e., 5, 10, and 20 MPa) was thoroughly examined, and applied pressure appears to influence the…
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Journal Article
Solid Waste Co-Conversion by Hydrothermal Treatment using Solid Waste Co-Conversion by Hydrothermal Treatment using Natural Zeolite Natural Zeolite
Hydrothermal treatment is a thermal conversion technology for processing high-moisture-content solid waste to coal-like materials. In this research, mixtures of sawdust and polyethylene terephthalate (PET) waste were treated in a 2000mL hydrothermal reactor to produce hydrochar and a liquid…
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Journal Article
Biosensor and Chemosensor Fluorophores that contain Chalcogenide Centers
In this timely review, we discuss the important attributes of various chalcogen-containing small-molecule probes that have been synthesized in the Molecular Logic Gate Laboratory at the Korea Advanced Institute of Science and Technology. Specifically, we discuss some of the important chemical and…
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Journal Article
Hepatitis B Surface Antigen and Viral DNA Detection and Prevalence in Nigeria
Hepatitis B infection is a major public health issue with a high mortality rate. It is caused by hepatitis B virus (HBV), a small incomplete hepadnavirus with several open reading frames (ORF). High mutation rates of the HBV ORFs due to the virus’ replicating strategy are associated with the…
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Journal Article
Improving the Sur ving the Surface Corr face Corrosion Resistance of AM osion Resistance of AMX601 Magnesium Alloy by Acid–Alkaline Treatment
A drawback of acid cleaning as surface finishing of magnesium (Mg) surface is the absence of a protective oxide film on its surface. Acid–alkaline treatment is proposed to enhance the surface corrosion resistance of AMX601 Mg alloy. Acid–alkaline treatment was conducted by first dipping the alloy…
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Journal Article
Malonic Acid as A Green and Efficient Catalyst for the Mass-scale Synthesis of Pyrrole Medicinal Drugs
A green and naturally biodegradable malonic acid synthesis of highly substituted dihydro-2-oxopyrrole derivatives has been accomplished viaone-pot four-condensation of amines (aromatic or aliphatic), dialkyl acetylenedicarboxylate, and formaldehyde under mild reaction conditions. The notable…
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Journal Article
Association between Dietary Macronutrient Intake and High-Sensitivity C-Reactive Protein Levels among Obese Women in Sensitivity C-Reactive Protein Levels among Obese Women in Kuantan, Malaysia Kuantan, Malaysia
Elevated high-sensitivity C-reactive protein (hs-CRP) levels may be associated with anincreased risk of cardiovascular disease (CVD). In general, an individual’s dietary intake may influence the hs-CRP level. However, evidence on the influence of dietary macronutrient intake on hs-CRP levels among…
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Journal Article
Computational Analysis of Chromophore Tripeptides FollowingFusion of Enhanced Green Fluorescent Protein and Cell-FollowingFusion of Enhanced Green Fluorescent Protein and Cell-penetrating Peptides penetrating Peptid
Cell-penetrating peptides (CPPs) are small peptides that can transfer other materials into a cellular compartment. In this research, we studied the effect of fusion of new CPPs to the N-terminal of enhanced Green Fluorescent Protein eGFP on the ability of the latter to fluoresce. Results showed…
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Journal Article
Lipid Peroxidation Inhibition Activity of Sintrong (Crassocephalum crepidioi-des) Leaf Extract in Rats Consuming Arak Jembrana crepidioi-des) Leaf Extract in Rats Consuming Arak
The present study was conducted to determine the antioxidant activity of sintrong (Crassocephalum crepidioides) leaf extract to inhibiting lipid peroxidation by decreased malondialdehyde (MDA) level in the blood plasma of rats consum-ing arak Jembrana. The process of making sintrong leaf extract…
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Journal Article
Mixed-layer Heat Budget in W er Heat Budget in Western and Eastern T estern and Eastern Tropical P opical Pacific Ocean during El Niño Event in 2015/2016
Temporal variation of mixed-layer heat budget at two contrasting locations, namely, western Pacific (warm water pool) and eastern Pacific (cold tongue) during the extreme El Niño phenomenon in 2015/2016 is evaluated. Oceanic and atmospheric datasets, including sea surface temperature (SST), wind…
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Journal Article
Key Deposition Parameters for Short-type ZnO Nanosheets Electrodeposited Under Galvanostatic Mode
Studies on the deposition of ZnO nanosheets grown vertically and perpendicular to conductive substrates have been conducted to obtain tall-type nanosheets (approximately 15 μm in height). However, some applications require short-type nanosheets with a height of about 1μm or less. In this study…
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Journal Article
Effect of Mechanical Milling on the Total Phenolic Content and Antioxidant Activity of Garcinia mangostana Pericarp
This study aimed to identify the effect of mechanical milling on the total phenolic content and antioxidant activity of mangosteen pericarp. Mangosteen pericarp was milled under different milling times (30, 90, 150, and 210 min). The particle morphology before and after milling was observed by…
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Journal Article
Lactic Acid Bacteria from Apis dorsata Hive Possessed Probiotic and Angiotensin-Converting Enzyme Inhibitor Activity
One source of bacteria that has not been widely explored is lactic acid bacteria originating from honeycomb (hive). Timor Island has a wealth of giant honey bees (Apis dorsata). Lactic acid bacteria from the Apis dorsata hive in Timor Island need to be investigated to obtain probiotic candidates…
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Journal Article
Effect of Harvest Age and Solvents on the Phenolic Content of Eucheuma cot-tonii Extract Eucheuma cot-tonii Extra
Bioactive compounds in Eucheuma cottonii include phenols or polyphenols with antioxidant, antibacterial, and antiviral properties. Seaweed quality, including phenolic content, is highly determined by several factors, including the growth location, cultivation technique, and harvest age. This study…
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Journal Article
Water Quality Assessment in The Occurrence of Acanthaster spp. (Crown-of-Thorns Starfish, CoTS) on Coral Reefs in Menjangan Island, Bali, Indonesia
Aquatic stressors are known to cause biological impairment that can result in biodiversity loss in several Marine Pro-tected Areas (MPA), including in Menjangan Island, West Bali National Park. The objectives of this study wereto cor-relate the changes in water quality parameters with the…
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Journal Article
DFT-based Study of Electric Field Effect on the Polarizability of DFT-based Study of Electric Field Effect on the Polarizability of Three Ringed Nematic Liquid Crystal Molecules Three Ringed Nematic Liquid Crystal Molecules
Owing to its successful application to complex molecular systems, computational density functional theory (DFT) has been used to study the effect of an electric field on the molecular polarizability and HOMO–LUMO gap of 1-phenyl-4-{2-[(1s,4r)-4-pentylcyclohexyl]ethyl}benzene (1) and its fluoro-…
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Journal Article
Sensitivity Enhancement of Silicon-on-Insulator Multipath Ring Resonator using Gold Nanodisk for Sensor Application
Currently, environmental degradation caused by heavy metals has become a serious concern of many countries. To monitor the concentration of heavy metals in the environment, an in-situ sensor that can measure in real time and has high quality, sensitivity, and flexibility is essential. We proposed a…
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Journal Article
Removal of Pb2+ and Cd2+ from Aqueous Solutions using POCl3 Cross-linked Carboxymethyl Derivatives of Legume Starch Cross-linked Carboxymethyl Derivatives of Legume Starch
Removal of Pb2+ and Cd2+ from Aqueous Solutions using POCl3 Cross-linked Carboxymethyl Derivatives of Legume Starch Cross-linked Carboxymethyl Derivatives of Legume Starc
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Journal Article
ZnO/SiO2 Composite as Catalyst for the Transformation of Glycerol to Glycerol Carbonate ol Carbonate
Zinc oxide/porous silica (ZnO/SiO2) composite was used as a catalyst to transform glycerol to glycerol carbonate (GC), a chemical intermediate and monomer for the synthesis of new functionalized polymers. The ZnO/SiO2 catalyst was prepared using the direct precipitation method by mixing zinc…