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SAINSMAT: Jurnal Ilmiah Ilmu Pengetahuan Alam
Published by Universitas Negeri Makassar
ISSN : 20866755     EISSN : 2579568     DOI : https://doi.org/10.35580/sainsmat112330232022
Core Subject : Science, Education,
Biochemistry, Genetics & Molecular Biology Chemistry Decision Sciences, Operations Research & Management Education Physics
The objective of this journal is to publish original, fully peer-reviewed articles on a variety of topics and research methods in both sciences, mathematics, its education, and applied science. The journal welcomes articles that address common issues in mathematics, sciences, education, applied science and cross-curricular dimensions more widely.
Arjuna Subject : Umum - Umum
Articles 269 Documents
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Sintesis Komposit Kitin-Silika (Ki-Sil) dan aplikasinya sebagai adsorben Logam Fe(III) dan Cr(III) Hasri, Hasri; Pratiwi, Diana Eka; Rahma, Muftihatu; Negara, Satria Putra Jaya; Genisa, Marlina Ummas; Rizal, Haryanti Putri
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol 14, No 1 (2025): Maret
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/sainsmat141707452025

Abstract

Limbah sekam padi dapat dimanfaatkan sebagai sumber silika dengan kandungan silika sebesar 86,90-97,30 % hal ini berpotensi sebagai material berbahan dasar silika. Demikian pula sumber kitin berlimpah pada cangkang crustaceas (kepiting, udang, lobster dll), perpaduan kitin-silika (Ki-Sil) sebagai komposit menjadi sangat menarik untuk diteliti. Sehingga penelitian ini bertujuan untuk mensintesis komposit Ki-Sil dan aplikasinya sebagai adsorben ion logam Fe(III) dan Cr(III). Mula-mula dilakukan ekstraksi silika sekam padi selanjutnya sintesis komposit Ki-Sil. Komposit yang diperoleh  dioptimasi terhadap pH dengan variasi pH (2-6), kapasitas adsorpsi dengan variasi konsentrasi (50-150 ppm) dan uji selektivitas adsorpsi kedua ion logam dengan perbandingan (0,25:0,75 ; 0,75:0,25 dan 1:1). Analisis gugus fungsi Ki-Sil menggunakan FTIR dan analisis morfologi menggunakan SEM. Hasil penelitian diperoleh pH optimum 4 untuk adsorpsi kedua logam target. Kapasitas adsorpsi logam Fe(III) berturut-turut adalah 31,49 mg/g; 69,69 mg/g; 89,83 mg/g dan 138,57 mg/g. Dan kapasitas adsorpsi logam Cr(III) berturut-turut adalah 37,80 mg/g; 70,86 mg/g; 89,98 mg/g dan 138,84 mg/g. Hasil uji selektivitas menunjukkan bahwa Ki-Sil mengadsorpsi logam Fe(III) sebesar 0,9820 mmol dan terhadap logam Cr(III) sebesar 0,9949 mmol. Disimpulkan bahwa komposit Ki-Sil lebih selektif mengadsorpsi logam Cr(III).
Pengembangan Nanoemulsi Ekstrak Daun Kelor (Moringa Oleifera) Sebagai Antioksidan, Antibakteri Dan Antiluka Hidayat, Muh Akbar; Hartati, Hartati; Pagarra, Halifah; Sahribulan, Sahribulan
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol 14, No 1 (2025): Maret
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/sainsmat141671352025

Abstract

This study aims to determine the effect of moringa leaf extract nanoemulsion (Moringa Oleifera Lamk.) on bacterial growth, antioxidant activity and wound healing potential in white rats (Rattus novegicus). The research method includes extraction of Moringa, making nanoemulsion of Moringa leaf extract concentrations of 75, 100 and 125 milligrams. Droplet nanoemulsion using Particle Size Analyzer (PSA), antibacterial with inhibition zone diameter (mm), antioxidant with DPPH (1,1 diphenyl-2-picrylhydrazyl) and measurement of wound healing activity by determining the percentage of wound closure in rats. The study used a completely randomized design (CRD) and Analysis of Variant (ANOVA) test followed by Tukey test. Antioxidant activity obtained IC50 Formula 1 amounted to 157.35 ppm, Formula 2 amounted to 123.40 ppm, Formula 3 amounted to 110.12 ppm, Moringa leaves extract amounted to 58.63 ppm and BHA comparison amounted to 6.84 ppm. Moringa leaf extract and nanoemulsion formula showed good wound healing activity which was faster than the positive control. It is found that moringa leaf extract and nanoemulsion formulation have antibacterial activity against S. aureus and E. coli. The wound healing activity of the nanoemulsion formulation was classified as good in mice with a faster wound healing process than the positive control.
The Effect of Gimkit Media in Discovery Learning Model on The Concept Understanding Mustafah, Alfian; Yunus, Muh.; Side, Sumiati
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol 14, No 1 (2025): Maret
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/sainsmat141706782025

Abstract

This study aims to analyze the effect of Gimkit learning media in  discovery learning model on the conceptual understanding of class XI students of SMA Negeri 9 Makassar on  material of solubility and solubility product in 2023/2024 using quasi-experimental and posttest only control group design. Population includes all class XI students with simple random sampling. XI Kimia 1 (24 students) as experimental group, while XI Kimia 3 (35 students) as control group. Independent variables use Gimkit in discovery learning and discovery learning model without Gimkit, while dependent variable is conceptual understanding as measured through cognitive learning outcomes. Instrument uses a learning outcome test. The results of descriptive analysis that average learning outcomes of experimental group are 82.87 higher than control group 78.7. Inferential analysis using Mann-Whitney Test shows Zcount> Ztable (2.00> 1.64), meaning that Gimkit in discovery learning affects students' conceptual understanding.
The Effect of Matoa (Pometia pinnata) Leaves Ethanol Extract On Reducing Cholestrol Levels In Male Mice (Mus musculus) Haq, Muhammad Naufal Syaiful; Pagarra, Halifah; Muis, Abd.; Salsabila, Shopia
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol 14, No 1 (2025): Maret
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/sainsmat141720372025

Abstract

This research aims to determine the total phenolic content and antioxidant activity of the ethanol extract of matoa (Pometia pinnata) leaves and their effect on the cholesterol levels of male mice (Mus musculus). To determine the total phenolic content using the Folin-Ciocalteu method and the DPPH method to measure antioxidant activity. The effect of matoa leaf extract on reducing cholesterol levels in mice used a completely randomized design (CRD) with 15 mice divided into 5 treatment groups with 3 replications, namely P1 (Extract 175 mg/kgBW), P2 (Extract 350 mg/kgBW), P3 (Extract 700 mg/kgBW), K+ (Simvastatin 0.10 mg/kgBW), and K- (Na-CMC 1%). Extraction uses the maceration method with 70% ethanol solvent. The total phenolic test results were 26.24872 mgGAE/g. The results of measuring antioxidant activity obtained an IC50 of 1,961 ppm. The results of testing cholesterol levels showed that there was an effect of giving ethanol extract of Matoa (Pometia pinnata) leaves on reducing cholesterol levels in male mice (Mus musculus). Giving ethanol extract of Matoa leaves at a dose of 350 mg/kgBW is effective in reducing cholesterol levels. So it can be concluded that the ethanol extract of Matoa leaves has an effect on reducing cholesterol levels in male mice.
Intervention Analysis In Time Series Data For Forecasting Bbri Stock Prices Mangkona, Andi Ilham Azhar; Aswi, Aswi; Ruliana, Ruliana
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol 14, No 1 (2025): Maret
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/sainsmat141670452025

Abstract

Intervention model analysis is a statistical technique used to assess the impact of an intervention event, caused by internal or external factors, on a time series dataset. The primary goal of this analysis is to quantify the magnitude and duration of the effects on the time series. Intervention models are typically divided into two types: the step function and the pulse function. The step function represents an intervention event with a long-term influence, while the pulse function captures the effects of an intervention within a specific time span. This study examines the stock price data of BBRI from March 2017 to June 2020, with the intervention point identified as the onset of COVID-19 in Indonesia, specifically during the first week of March (t = 155). ARIMA modeling was applied to pre-intervention data to determine the order of intervention (b, s, r). The analysis concluded that the best-fitting model was ARIMA (2, 1, 0), with the intervention order characterized by a step function where b = 0, s = 2, and r = 0. The accuracy of the forecasting results was evaluated using the Mean Absolute Percentage Error (MAPE), which yielded a value of 8.48%.
Pengembangan Instrumen Assessment IDEAL Problem Solving Pada Materi Koloid Amaliah, Nor; Munzil, Munzil; Yahmin, Yahmin
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol 14, No 1 (2025): Maret
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/sainsmat141695402025

Abstract

Problem solving is one of the abilities that students must have in the 21st century. This is because students' ability to solve problems is expected to increase their higher order thinking skills (HOTS) competency. The ability to measure problem solving can be assessed through test instruments in the form of questions containing problems. This research aims to analyze problem solving abilities in colloidal materials through the development of the IDEAL Problem Solving assessment instrument. This instrument includes five indicators, namely Identify the Problem, Define the Outcome, Explore Possible Strategies, Anticipate Outcome & Act, and Look back and Learn. The research was conducted for 3 months at SMAN 1 Sungai Tabuk class XI semester II (even). The method used is development research or R&D (Research and Development) research. The development of this instrument adapts the ADDIE development model by following five steps, including (1) Analyze (analysis), (2) Design (planning), (3) Develop (development), (4) Implementation (implementation), (5) Evaluate (evaluation). Data analysis was carried out quantitatively with statistical tests. The empirical validity results show that the instrument is valid and reliable to use and meets the criteria for a good level of difficulty and discrimination.
Risk Factors For Stunting Incidence In Urban and Rural Areas Of Indonesia Using Bayesian Spatial CAR Zulhijrah, Zulhijrah; Rifaldi, Destriana Aulia; Hapsari, Nimas Ayu; Sulaeman, Sulthan Naufal; Aidi, Muhammad Nur
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol 14, No 2 (2025): September
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/sainsmat142712542025

Abstract

Stunting is a chronic growth disorder in children under five that requires evidence-based interventions. To understand the factors that contribute to stunting in different regions of Indonesia, Bayesian Conditional Autoregressive (CAR) modeling was used to estimate the relative risk of stunting. The analysis showed that the Besag-York-Mollié (BYM) model with covariates provided the best results in estimating the risk of stunting. The data for this study were obtained from the 2018 Basic Health Research Survey. In urban areas, immunization coverage has a significant effect on stunting risk, while in rural areas, in addition to immunization, vitamin supplementation coverage and poverty level are also significant factors. Based on the modeling, the region with the highest risk in urban areas is West Sulawesi Province with a relative risk of 1.638, while the lowest is Bali Province with 0.564. In rural areas, Papua Province had the highest risk of 1.820, while North Sulawesi Province had the lowest risk of 0.599. These findings suggest that immunization coverage is instrumental in reducing stunting, both in urban and rural areas. In addition, in rural areas, increasing vitamin supplementation coverage and decreasing poverty levels can help reduce the risk of stunting. Therefore, intervention policies should be tailored to the characteristics of each region to be more effective in addressing stunting in Indonesia.
Modeling of Factors Affecting the Open Unemployment Rate in East Java Haryanto, Albertus Eka Putra; Zulfadhli, Muhammad; Alimuddin, Ahmad Hilal
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol 14, No 2 (2025): September
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/sainsmat142714042025

Abstract

One of the challenges faced in achieving the Sustainable Development Goals (SDGs) in point eight is the high unemployment rate in several regions. East Java Province is one of the provinces with a relatively high Open Unemployment Rate (TPT) compared to the target set by the provincial government in 2021. In that year, East Java's TPT was recorded at 6.49%, exceeding the specified target of between 3.96% and 4.01%. In addition to the impact of the COVID-19 pandemic, several other factors are thought to have a significant influence on the East Java TPT. This study aims to model these factors using linear and nonparametric regression with a truncated spline approach to identify the best model. The data used in this study are secondary data from the Badan Pusat Statistika (BPS). The results showed that the best model based on the highest R² value and the lowest RMSE was nonparametric regression with a truncated spline. The variables of district/city minimum wage,Labor Force Participation Rate, and Human Development Index (HDI) have a significant effect on TPT in East Java, where this model is able to explain 91.51% of the variability in the model.
Integrating Disaster Risk Reduction and Environmental Care in Junior Secondary Education: A Systematic Literature Review of Educational Strategies and Attitudes Fandi, Real; Nasrul, Nasrul; Adumiranti, Yuninda; Nurohman, Sabar
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol 14, No 2 (2025): September
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/sainsmat142742842025

Abstract

This study aims to analyze the Integration of Disaster Risk Reduction and Environmental Concern in Junior High School Education against several existing scientific literature studies. The type of research used in this study is Systematic Literature Review with the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) method by looking at the inclusion and exclusion criteria. There are 132 articles that have been obtained through the keywords disaster risk reduction in secondary school and Junior High Environmental Attitudes, Screening 83 articles, Eligible 59 Articles, and there are 5 articles that will be reviewed according to the predetermined research topics. The results of this study indicate that the integration of disaster risk reduction and environmental concern at the junior high school level is carried out through various approaches, including social values, environmental ethics, and active student participation. The real-life activity-based approach and visual media have proven effective in increasing students' awareness of the impacts of environmental damage and the importance of collective action. In addition, child-based education and the application of the principles of gender equality and social inclusiveness strengthen students' understanding of their role in climate change adaptation and sustainable disaster mitigation.
The Effectiveness Of The Character Class In The Matriculation Program On The Formation Of Discipline Among Grade X Students Of The 14Th At SMA Islam Athirah Bone Mutmainnah, Mutmainnah
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol 14, No 2 (2025): September
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/sainsmat142759772025

Abstract

This study aims to determine the effectiveness of the character class in the matriculation program on shaping positive discipline among Grade X students at SMA Islam Athirah Bone. Education is an essential aspect for students to develop intellectual abilities, and it also plays a significant role in character formation. SMA Islam Athirah Bone has implemented character education, particularly through the matriculation program, as an early effort to build positive discipline in new students, specifically those in Grade X. This research uses a descriptive quantitative approach, with data collected through a closed-ended questionnaire consisting of 36 statements covering five indicators of positive discipline and one indicator of the character class. The population of this study is all Grade X students at SMA Islam Athirah Bone, with a total sample of 84 respondents. The study was conducted at SMA Islam Athirah Bone. The results show that the average final score of the independent variable (character class) is 83.50%, while the dependent variable (positive discipline) scored 84.72%. Based on the score interpretation criteria, both results are categorized as very good. Therefore, it can be concluded that the character class in the matriculation program is effective in shaping positive discipline among Grade X students of the 14th cohort. This includes aspects such as punctuality, adherence to school rules, timely completion and submission of assignments, proper and respectful language use, and taking responsibility for acts of vandalismKeywords: Character Class, Matriculation Program, Formation of Discipline for Class X Students

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