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Diana Eka Pratiwi
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Unit Publikasi Lantai 11 Gedung ICP FMIPA UNM Jln. Daeng Tata, Kampus UNM Parangtambung, Makassar, Indonesia 90224
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INDONESIA
SAINSMAT: Jurnal Ilmiah Ilmu Pengetahuan Alam
Published by Universitas Negeri Makassar
ISSN : 20866755     EISSN : 25795686     DOI : https://doi.org/10.35580/sainsmat
Core Subject :
The objective of this journal is to publish original, fully peer-reviewed articles on a variety of topics and research methods in sciences, mathematics, statistics, education, and applied science. The journal welcomes articles that address common issues in mathematics, sciences, statistics, education, applied science, and cross-curricular dimensions more widely.
Arjuna Subject : -
Articles 282 Documents
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Identification of Student Learning Styles in Assisting Lecturers in Determining Learning Models at Muhammadiyah University of Bulukumba Fauzan Akbar; Haerul Mutiah
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol. 9 No. 2 (2020): Volume 9 Nomor 2 (September 2020)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

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Abstract

Learning and teaching activity in collage is an educative activity, it can be seen from the interaction of students and lecturer, both the students and students itself. Teaching and learning activity are directed to achieve the certain goals. Defines the students learning characteristic refers to the uniqueness of how the students receiving and processing the information through their feelings. Learning styles is a combination of cognitive, affective and psychomotor and also physiology factors that show the indicator about how the students interact and give respond to learning environment. Wealso have to know that the students’ passion and motivation are different. Related to the background above, we have to decide learning model that we will apply during the learning and teaching process by looking the students’ characteristic and their learning styles. Learning styles is cognitive, affective and psychomotor characteristic as an indicator that acts relatively stable for learning, connecting and interacting to learning environment. Learning styles is a way that we choose for doing some activities such as, thinking, processing and understanding the information. Form the definition above, we can conclude that learning style is a characteristic or the ability to respond the learning proces. This research is descriptive research using survey method, with no treatment given to sample. The sample of this research was all the students of Universitas Muhammadiyah Bulukumba. It was choose by using Purposive sampling technique where one class represent for each department. The data analyze by SPSS application. Procedure of collecting data of this research was used validated questionnaire.
Dynamics On The Spread Of Measles With Migration Effect Lazarus Kalvein Beay
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol. 7 No. 2 (2018): Volume 7 Nomor 2 (September 2018)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

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Abstract

Migration is one of the important parameters in the spread of disease, including measles. This study aims to examine the effect of immigration and emigration parameters on the spread of measles. The method used is literature study to determine the variables and parameters used when designing the model. The data used for simulation is secondary data obtained from previous studies. By determining the basic reproduction number, an analysis of migration parameters can be performed on the spread of measles. Simulation results show that the basic reproduction number of the model is monotonically increasing as immigration increasing. Next, the basic reproduction number of the model is monotonically decreasing as the emigration increasing. The results show that the migration process affects the spread of measles.
Study of Frequency-Dependent Magnetic Susceptibility to the Iron Sand in Takalar Regency Vistarani Arini Tiwow; Meytij Jeanne Rampe; Muhammad Arsyad
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol. 7 No. 2 (2018): Volume 7 Nomor 2 (September 2018)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

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Abstract

Research on the study of frequency-dependent magnetic susceptibility to the iron sand in Takalar Regency has been conducted. The purpose of this study was to identify dominant magnetic minerals based on magnetic susceptibility data and analyze magnetic mineral sources based on frequency-dependent magnetic susceptibility. The method used was the magnetic rock method, especially the parameters of magnetic susceptibility. Measurements were made using a Bartington MS2 Susceptibility Meter device equipped with an MS2B sensor that works at low frequency (470 Hz) and high frequency (4700 Hz). The results indicate that iron sand contains ferrimagnetic minerals, namely magnetite. The value of magnetic susceptibility at low frequency and high frequency were identical and the percentage of frequency-dependent magnetic susceptibility was less than 2% which indicates that iron sand has multidomain magnetic grains (MD). The positive correlation between magnetic susceptibility at low frequency and frequency dependent indicates the dominant source of magnetic minerals derived from pedogenic processes, namely the weathering of volcanic rocks.
Antibacterial Teest of Musa paradisiaca x balbisianaPeel Extract against the Growth of Staphylococcus aureus Herdimas Yudha Pratama; Ernawati; Nur R.Adawiyah Mahmud
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol. 7 No. 2 (2018): Volume 7 Nomor 2 (September 2018)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

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Abstract

Antibacterial activity of crude extract of pisang kepok raw fruit peel (Musa paradisiaca x balbisiana) were tested against Staphylococcus aureus. This research was designed with 5 treatments and 3 replications. Various concentration of sample extract that has been given are P0: 0%, P1: 25% (0.5 mg/2 ml), P3: 50% (1 mg/2 ml), P4: 75% (1.5 mg/2ml), and P5: 100% (2 mg/2 ml), in aqueous solution. The result shows the potential of sample extract to inhibit the growth of Staphylococcus aureus. P5 shows the best result in inhibit Staphylococcus aureus growth with the lowest colony count i.e. 8.7 x 104colonies
Forecasting of Total Tourism Visit in North Toraja Regency in 2021 with Applied of ARIMA Method Bakhtiar; Didiharyono
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol. 7 No. 2 (2018): Volume 7 Nomor 2 (September 2018)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

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Abstract

This study aims to forecasting spike in the total of tourists in North Toraja district in 2021 with the applied of ARIMA model. The research method used is applied research with quantitative secondary data obtained in BPS Kab. Toraja Utara. The research procedures include model identification, parameter estimation, diagnostic stage and forcasting with used soft computer is Minitab 18. Based on the research result, obtained five time series models are used to forcasting the number of tourists in North Toraja2021 is ARIMA (1,1,1), ARIMA (2,1,1) and ARIMA (1,2,1). The right criteria in selecting the best model is the model that has the smallest Mean Square (MS) value. In this case the time series model with the smallest MS is ARIMA (1,1,1) is 16487384. Thus, this model used in doing the forecasting is ARIMA (1,1,1) with the general form that’s 푍푡=0,925푍푡−1+0,075푍푡−2+푎푡−0,9830푎푡−1.The forcasting result from January to December 2021 are 13984.9; 14924.1; 15033.1; 15204,6; 15371.4; 15538,6; 15705,7; 15872.8; 16040; 16207,1; 16374.2 and 16541.4.
Quality Control Analysis of Production with Six-Sigma Method in Drinking Water Industry PT. Asera Tirta Posidonia Didiharyono; Marsal; Bakhtiar
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol. 7 No. 2 (2018): Volume 7 Nomor 2 (September 2018)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

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Abstract

This study aims to analyze the quality control of production with Six Sigma method in improving product quality in drinking water industry PT Asera Tirta Posidonia Palopo City. The type of research used is applied research with quantitative data. The research procedure performed through Six Sigma method steps include Define,Measure, Analysis, Improve and Control. The results obtained are first, the define stage is the definition of quality standard problems in the company's production process, define the action plan that must be done, set the goals and objectives of Six Sigma quality improvement. Second, the measure stage. At this stage the measurement of product quality characteristics produced in the production process is done by the company so that researchers only perform data collection or documentation that has been made by the production department. Third, the stape analytical begins with the calculation of the value of Central Limit, UCL, LCL, determine DPMO value and Sigma value determination with average sigma level 1,929 or condition in 2 sigma with probability of damage equal to 335,287 for million times production process (DPMO) or 33,5%. Fourth, the improvement stage is to supervise the employees of the production, maintenance and repair of machinery on a regular basis and the selection of quality raw materials that will be used in the production process and the grouping of defects product based on disability type, observe every week, in detail, control of defective product is done well, skill and awareness of operator must be enhance, the supervisor is responsibleto defective product of each area. Fifth, the control stage is to perform maintenance and repair machinery on a regular basis and sustainable, supervision of raw materials and production employees for the quality of goods produced better, recording and weighing defective products of each type of damage, report the results of weighing to the supervisor and supervision of production continuously. Based on quality control activities, the company simply provide benefits in an effort to reduce product failure but still not maximal. So it should be suggested that the company should improve the capabilities of Sigma and improve the process by making improvements to machinery, raw materials, methods and environment as well as coaching and supervision of employees.
Development of Genetic Vocabulary CardsLearning Media to Improve Motivation and Student Learning Outcomes Arifah Novia Arifin; Aldi; Fiska Indah Reski
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol. 7 No. 2 (2018): Volume 7 Nomor 2 (September 2018)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

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Abstract

This research aims to determine the validity and practicality of using Genetic Vocabulary Cards to increase motivation and learning outcomes of students of Class XII MAN 1 Makassar. This type of research is Reseacrh and Development. The study population was all students of class XII MIA MAN 1 Makassar 2018/2019 academic year consisting of 5 classes. The sample is students of class XII MIA 5 MAN 1 Makassar in the academic year 2018/2019. The instruments used were student response questionnaires and validity assessment sheets for media validators. The results of this study indicate that Genetic Vocabulary Cards learning media are declared valid and practical in their use
Penggunaan Model Pembelajaran Kooperatif Tipe STAD(Student Teams Achievement Division) untuk Meningkatkan Hasil Belajar Ipa Siswa Kelas IXD SMP Negeri 7 Alla Enrekang Sitti Haritsah
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol. 11 No. 1 (2022): Volume 11 Nomor 1 (Maret 2022)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

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Abstract

This classroom action research aims to improve and complete science learning outcomes for class IX D SMP Negeri 7 Alla Enrekang using the STAD (Student Teams Achievement Devision) type of cooperative learning model. The research subjects were students of class IX D SMP Negeri 7 Alla Enrekang. The research was carried out from July to September 2019. The data collection technique was observation or observation. The research was carried out in 3 cycles, at the end of each cycle a test was carried out to determine student learning outcomes. The results showed an increase in the average value of science learning outcomes for Class IX D students of SMP Negeri 7 Alla Enrekang in each cycle, namely cycle I (72.93), cycle II (75.20) and cycle III (76.53). The learning mastery of class IX D students of SMP Negeri 7 Alla Enrekang increased in each cycle, namely cycle I (73.33%), cycle II (80.00%) and cycle III (86.67%).
Sintesis Nanokitosan dari Limbah Kulit Udang Windu (Panaeus monodon) Isna Sejati Syam; Hasri Hasri; Suriati Eka Putri
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol. 11 No. 1 (2022): Volume 11 Nomor 1 (Maret 2022)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

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Abstract

This study aims to determine the characteristics of nanochitosansynthesized from chitosan from tiger prawn shells (Panaeus monodon) using sonochemical and ionic gelation methods based on variations in chitosan concentration. The characterization of nanochitosan includedthe degree of distillation using FTIR, particle size using PSA, and morphology testing using SEM. The results showed that the chitosan obtained had a degree of deacylation of 81.23%. The average size of the smallest nanochitosan synthesized using the sonochemical method is 54.44 nm with 0.2% chitosan concentration, while that produced using the ionic gelation method is 39.65 nm with 0.05% chitosan concentration, and there is a pore appearance on the surface. nanochitosan surface. Based on these data, it can be concluded that the ionic gelation method produces a smaller average nanochitosan particle size than the sonochemical method.
Identifikasi Senyawa Kulit Buah Kakao Sulawesi 2(Theobroma cacaoL.) Menggunakan Etanol dan Aseton Rachmawaty Rachmawaty; Halifah Pagarra; Nurul Anisa
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol. 11 No. 1 (2022): Volume 11 Nomor 1 (Maret 2022)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

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Abstract

This research was to determine the differences composition of chemical compounds the ethanol and acetone extract from cocoa pod husks based on qualitativephytochemical analysis and gas chromatography-mass spectrometry (GC-MS) analysis.Cocoa pod husk extraction was carried out by maceration method using 70% ethanol and acetone:water (7:3) as solvents. The yield results obtained showed that the cocoa pod husk extract that extracted by acetone had a higher yield than the ethanol solvent. In the qualitative phytochemical test using color reagents was found that ethanolic extract of cocoa pod husks contained flavonoids and phenols, while the acetone extract contain tannins, flavonoids, and phenols. The GC-MS test of ethanol extract of cocoa pod husks had identified 5 main compounds that classified to fatty acid and lactone compounds, while acetone extracthad also identified 5 main compounds that classified to glycerol, ester, disaccharide, phthalic ester, and ascorbic acid compounds.

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