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INDONESIA
INOVASIA
Published by Institut Studi Islam Sunan Doe
ISSN : 29649420     EISSN : 29632617     DOI : https://doi.org/10.58330/inovasia
Core Subject : Science, Education, Social, Engineering,
Chemistry Engineering Environmental Science Mathematics Physics
INOVASIA welcomes high-quality manuscripts generated from research projects which include, but are not limited to the following topics: Mathematics: Multidiscipline Education of Mathematics Topics. Pure Mathematics Graph and Combinatorics Applied Mathematics and Computation Statistics and Probability Science Education: Learning Innovation Assessment and Evaluation Learning Media Conceptions and Misunderstandings Philosophy and Curriculum Psychology in Education Science: Physics and its applications, Biology and its applications, Chemistry, including its application Technique: Civil Engineering Electrical Engineering Informatics Engineering Craft Engineering Architecture Engineering Industrial Engineering Mechanical Engineering Other related engineering fields Environment: Environmental Management Environmental Ecology Conservation of Natural Resources and the Environment Development and Environment Environmental Impact Analysis Environmental Planning and Administration Environmental Health Environmental Engineering and Environmental Pollution, and Environmental Information Systems.
Arjuna Subject : Umum - Umum
Articles 6 Documents
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Search results for , issue "Vol 2 No 2 (2024): April" : 6 Documents clear
Determination of Boron Content in Crackers Using Curcumin Reagent in a 2-Ethyl-1,3-Hexanediol Ligand through Spectrophotometric UV-Vis Absorption Spectra Erni Yustissiani
INOVASIA Vol 2 No 2 (2024): April
Publisher : LPPM Institut Studi Islam Sunan Doe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58330/inovasia.v2i2.346

Abstract

Curcumin reagent is a reagent that produces rosocyanin complexes using the Uv-Vis spectrophotometry method. Optimum state of boron curcumin in EHD ligand (2-ethyl-1,3-hexanediol) at a wavelength of 551 nm. Linear calibration curve in the concentration range of 0.22-0.91 ppm in EHD with a correlation coefficient R2 of 0.9995 with a regression equation y = 0.9306x + 0.0005. This method produces a percent RSD of 0.303% with an average absorbance value of 0.226. The results of calculations with EHD ligands showed a detection limit value of 0.244 µg/L with a limit value of quantification obtained 0.815 µg/L. The measured boron levels in the five cracker samples analyzed by EHD were 1.35 mg/kg, 1.80 mg/kg, 1.99 mg/kg, 1.44 mg/kg, 2.05 mg/kg.
Synthesis and Characterization of Rubber Seed Shell-Derived Activated Carbon by KOH Activation Gabriela Elsandika; Budi Hariyanto; Panggabean, Lady M.; Sihombing, Feridah A.; Hakim, Luqman
INOVASIA Vol 2 No 2 (2024): April
Publisher : LPPM Institut Studi Islam Sunan Doe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58330/inovasia.v2i2.353

Abstract

This study presents the preparation and characterization of activated carbon derived from rubber seed shells using potassium hydroxide (KOH) activation. The raw material for this investigation was obtained from rubber seed shells collected from local rubber plantations in Palangka Raya. The activation process involved the use of the chemical activator KOH at a 1:1 carbon-to-KOH ratio in 200 mL of distilled water for a duration of 24 hours. X-ray Diffraction (XRD) analysis confirmed that the resulting activated carbon exhibited an amorphous structure, and all Fourier-Transform Infrared Spectroscopy (FTIR) spectra indicated the presence of functional groups in the activated carbon. The activated carbon possessed a porous structure with a surface area and total pore volume of 2.24 m2/g and 0.02 cm3/g, respectively. These findings necessitate further optimization of the activation process to achieve a larger surface area, thus enabling its application in electronic materials, water treatment, and various other fields.
Determination of Subsurface Structure with Magnetic Method Indah Gumilang Dwinanda
INOVASIA Vol 2 No 2 (2024): April
Publisher : LPPM Institut Studi Islam Sunan Doe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58330/inovasia.v2i2.358

Abstract

The magnetic method is one of the methods used in geophysical engineering. Measurements using the magnetic method that are mostly carried out are by using a PPM (Proton Precession Magnetometer). The application of the magnetic method is often used in preliminary exploration of petroleum, geothermal, and mineral deposits and can be applied to prospecting for archaeological objects. The purpose of this study was to determine the subsurface layers using the magnetic method as an initial survey with the hope of being able to apply magnetic method theory in practice in the field before carrying out other, more complex surveys.
Formulation and Evaluation of Physical Properties of Antioxidant Effervescent Granules and Extract of Karamunting Flower (Melastoma malabathricum L.) Shesanthi Citrariana; Yahya Febrianto; Thathit Suprayogi; Emma Ayudia Noriadita
INOVASIA Vol 2 No 2 (2024): April
Publisher : LPPM Institut Studi Islam Sunan Doe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58330/inovasia.v2i2.359

Abstract

Karamunting (Melastoma malabathricum L.) contains several compounds with pharmacological activities including antioxidant, analgesic, anti-inflammatory, antipyretic and diuretic. Karamunting flowers contain flavonoid compounds, saponins and tannins. Tannin compounds can stabilize free radicals by complementing the electron deficiency of free radicals. To increase the utilization of karamunting flowers, it is formulated in the form of effervescent granules. This study aims to determine the ethanol extract of karamunting flower (Melastoma malabathricum L.) with concentrations of 1%, 2%, and 3% can be formulated in the form of effervescent granules. The physical properties of the granules were tested which included organoleptic test, flow rate test, granule compressibility test, dissolving time test and pH of effervescent granules. The results showed that formula 3 with a concentration ratio of 3% ethanol extract was a formula that met the requirements for the physical properties of the granules, namely with a sweet and sour taste, a characteristic odor of karamunting, and a dark purple-brown color. With an average flow rate of 2.853 g/sec, average compressibility of 21.12%, an average dissolving time of 7.52 seconds and a pH measurement of 5.
Analysis of Conceptual Understanding Ability Among Students in the Mathematics Education Program Taking the Number Theory Course Anisah, Anisah; Lastuti, Sri
INOVASIA Vol 2 No 2 (2024): April
Publisher : LPPM Institut Studi Islam Sunan Doe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58330/inovasia.v2i2.360

Abstract

This study aims to analyze the conceptual understanding of students in the Mathematics Education Program with respect to the Number Theory course. The research method employed is quantitative descriptive analysis. The participants comprise 16 students in their second semester who enrolled in this course. The instrument utilized for the study is a written test consisting of descriptive questions designed to gauge conceptual understanding. The findings indicate that the average score for students' conceptual understanding in the Number Theory course is 64,75, which falls into the "Good" category. Specifically, the ability to explain concepts is categorized as "Good" with an average score of 61.25. The proficiency in using concepts averages at 69.5, and the capacity to extrapolate from a given concept is also rated "Good," with an average score of 63.5.
The Influence of Prior Knowledge on Physics Learning Outcomes using Structured Quizzes Ummah, Rakhmatul; Raden Oktova
INOVASIA Vol 2 No 2 (2024): April
Publisher : LPPM Institut Studi Islam Sunan Doe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58330/inovasia.v2i2.366

Abstract

Educator believe that prior knowledge can facilitate students in comprehending subsequent materials and serve as an indicator of learning outcomes. This study aims to explore the learning outcomes of advanced class physics students based on their prior knowledge, using structured quizzes as a measuring tool. The influence of prior knowledge on learning outcomes was quantified using SPSS, revealing a relative contribution of 34.62% to learning outcomes, with an effective contribution of 51%. Consequently, it can be concluded that the level of prior knowledge significantly affects learning outcomes.

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