Articles
<![CDATA[EFEK KONSENTRASI Cu PADA STRUKTUR DAN SIFAT HANTARAN LISTRIK NANOPARTIKEL CuPt ]]>
<![CDATA[Imamora, Marjoni]]>;
<![CDATA[R, Setia Erlila]]>;
<![CDATA[Rahmi, Elvy]]>;
<![CDATA[Maiyena, Sri]]>;
<![CDATA[Umar, Akrajas Ali]]>
<![CDATA[ Sainstek : Jurnal Sains dan Teknologi Vol 7, No 1 (2015) ]]>
Publisher : <![CDATA[IAIN Batusangkar ]]>
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DOI: 10.31958/js.v7i1.128
<![CDATA[The investigation of bimetallic CuPt Nanoparticles (CuPt NPs) with average diameters in the 196.7±98 nm range have been prepared by the Liquid phase deposition methods and synthesized directly on an indium tin oxide (ITO) substrate. CuPt NPs with high surface defect grown on (ITO) surface were prepared via a simple immersion of the substrate into a solution contains 1 mM Potassium Hexachloro Platinate (K2PtCl6), 0.2 mM Anhydrous Copper (II) Sulfate (CuSO4) anhydrous, 0.01 M Sodium dodecyl sulfate (SDS) and 10 mM Formic acid for 4 h at room temperature. The modification of Cu2+ ion precursor play a role to determine the nanoparticles geometry obtained. The simultaneous reduction of metal ions leads to either a surface enriched with one component or an alloy type of structure depending on the bimetal composition. The bimetallic CuPt NPs dispersions are characterized by FESEM, EDX Mapping, XRD, HRTEM and XPS analysis.Key words: CuPt, Liquid phase deposition, Bimetallic CuPt NPs]]>
<![CDATA[PENGGUNAAN COMPUTED RADIOGRAPHY UNTUK IDENTIFIKASI MADU LEBAH ]]>
<![CDATA[MAIYENA, SRI]]>
<![CDATA[ Sainstek : Jurnal Sains dan Teknologi Vol 8, No 2 (2016) ]]>
Publisher : <![CDATA[IAIN Batusangkar ]]>
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DOI: 10.31958/js.v8i2.481
<![CDATA[Research on identification of honey bee using Computed Radiography has been done. The testing was carried out by providing digital radiograph of the three types of honey bee. The voltage of the x-ray generator was varied at 50 kV, 60 kV and 70 kV, while filament current was set at 100 mA and exposure time was at 5 ms. Honey bee was identified based on the image line profile that indicated the distribution of linear absorption coefficient (µ) for each sample. The analyses on the image line profile showed that at the voltage of 50 kV and 70 kV the three kinds of the honey bee can be distinguished. However, at the voltage of 60 kV the difference among honey bee was unable to be identified.]]>
<![CDATA[PENGUKURAN KAPASITAS SIMPAN RELATIF BERBAGAI TIPE SIMCARD MENGGUNAKAN CITRA RADIOGRAFI ]]>
<![CDATA[MAIYENA, SRI]]>
<![CDATA[ Sainstek : Jurnal Sains dan Teknologi Vol 4, No 1 (2012) ]]>
Publisher : <![CDATA[IAIN Batusangkar ]]>
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DOI: 10.31958/js.v4i1.57
<![CDATA[This research was aimed at finding out the usage of radiological physics, i.e. the use of radiology in projecting the image of a constituent material without damaging the outer profile, calibrating radiological picture with aluminum profiles and measuring the relative sim card storage capacity of hand phones. The test was conducted to five types of sim cards along with a ladder-shaped aluminum profile. Photography radiology was performed energy 50 kv. Then the analysis of image quality was done by using software of new image analyzer 2007. Image calibration process was done by using the results of aluminum profile image. The results of the photographic image were recorded 20 times, and then selected the best image. Then the image result obtained was used to calibrate the thickness of aluminum profile. From the calibration it was found the function equationof the grayscale, y=143,9e-0,18x with the correlation 0,974. As the result of the calibration, it was obtained the relative thickness of sim cards toward aluminum; between 0,3877 ? 0,7423mm. The density measurement of the sim card with grayscale was ranging between 125-134. The density shows the relative simcard storage capacity.Key words: storage capacity, radiographic images, simcard]]>
<![CDATA[KAJIAN ANALISIS URIN BAYI PEREMPUAN DAN LAKI LAKI DENGAN COMPUTED RADIOGRAPHY ]]>
<![CDATA[MAIYENA, SRI]]>
<![CDATA[ Sainstek : Jurnal Sains dan Teknologi Vol 6, No 2 (2014) ]]>
Publisher : <![CDATA[IAIN Batusangkar ]]>
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DOI: 10.31958/js.v6i2.116
<![CDATA[This study aimed to see whether there are differences in the profile line image and the linear attenuation coefficient in the urine baby boys and baby girls who drink only breast milk alone and additional milk with computed radiography, and relation to differences in impurity law. The study was conducted in the x-ray radiology Hospital National Stroke Bukittinggi. The study sample consisted of urine male and female babies who drink only breast milk and urine only baby girls and boys who drank ation and additional milk. CR image retrieval is performed three days (22, 25 and 26 September 2014) with a voltage variation of 50 and 60 kV and 100 mA using a strong current and exposure time of 5 ms. The image was analyzed visually, and physical image quality. The results showed that visual image acquisition of the third day and with two different voltage variations indicate that there are differences in the brightness, contrast and sharpness of the image. Analysis of image quality (based grafi line profile image) shows the pattern of the same line profile image on the third day of taking images at a voltage of 60 kV. Physical Analysis of the image showed that the urine samples tested had a pattern of linear attenuation coefficient value equal to the voltage of 60 kV on three different days. Linear attenuation coefficient values greatest U1 and U3 linear attenuation coefficient on the third day of the smallest image retrieval. The big difference in the value of the significant linear attenuation coefficient between U1 and U3 sample is related to differences in the urine purification unclean baby boys and baby girls.Key words: baby boy urine, urine baby girl, computed radiography, law unclean in Islam]]>
<![CDATA[PENGGUNAAN METODE EULER PADA PERSAMAAN DIFERENSIAL ORDE DUA PADA RANGKAIAN LISTRIK SERI LC ]]>
<![CDATA[MAIYENA, SRI]]>
<![CDATA[ Sainstek : Jurnal Sains dan Teknologi Vol 3, No 2 (2011) ]]>
Publisher : <![CDATA[IAIN Batusangkar ]]>
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DOI: 10.31958/js.v3i2.50
<![CDATA[The use of analytical methods in solving some forms of differential equations, specifically the non-linear differential is difficult to conduct. The alternative is by using the numerical method. The numerical method used is the euler method which applies the second order differential equation on an LC series circuit. By using fortran program, the strong current and charge are obtained from t=0 and t=2.5 second.Key words: Differential Equation, LC series circuit, numerical method, euler method]]>
<![CDATA[PENGEMBANGAN ALAT PRAKTIKUM GERAK JATUH BEBAS MENGGUNAKAN SENSOR PHOTOTRANSISTOR UNTUK PEMBELAJARAN FISIKA PADA MATERI GERAK JATUH BEBAS ]]>
<![CDATA[Maiyena, Sri]]>;
<![CDATA[Imamora, Marjoni]]>;
<![CDATA[Ningsih, Fitri]]>
<![CDATA[ Sainstek : Jurnal Sains dan Teknologi Vol 9, No 1 (2017) ]]>
Publisher : <![CDATA[IAIN Batusangkar ]]>
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DOI: 10.31958/js.v9i1.750
<![CDATA[This study aims to produce free fall practicum tools by utilizing phototransistor sensors to record the travel time of objects that fall from the starting point to the end point. Dealing with free falling equipment (GJB), equipment in schools is generally still very simple that is using a stopwatch. This type of research is a research and development using 4-d model (define, design, develop and disseminate), which is limited to the stage of development to practicalization activities. Data were collected through validation and responses toward administered questionnaires. Data analysis were conducted by analyzing validation sheet and quantitative response questionnaire by finding percentage of each item on the validation sheet. Then the data validation results are analyzed by descriptive technique to describe the quality of the developed product. The result of calibration of free fall practicum by using phototransistor sensor at 40 cm, 50 cm, and 70 cm distance obtained the average travel time of each object is 0.28 s, 0.32 s, and 0.37 s. These results indicate that the practicum tool has been calibrated. Validation of practicum tool is 72,39% and validation of questionnaire response of practican is 75%, indicating tool categorized valid. Furthermore, this tool is tested in class X.MIA and XI.MIA MAN 3 Payakumbuh which consisted 23 students in the science laboratory of MAN 3 Payakumbuh with the questionnaire response practicality are 87.75% and 84.41% respectively which are categorized very practical.]]>
<![CDATA[KAJIAN ANALISIS MAGNET DALAM TUBUH MANUSIA ]]>
<![CDATA[MAIYENA, SRI]]>;
<![CDATA[Lizelwati, Novia]]>
<![CDATA[ Sainstek : Jurnal Sains dan Teknologi Vol 5, No 2 (2013) ]]>
Publisher : <![CDATA[IAIN Batusangkar ]]>
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DOI: 10.31958/js.v5i2.95
<![CDATA[Magnet contribute greatly to health. As a result, a variety of products using a mag-net as a healing tool. The use of magnets for health is presumably because in the human body there are also magnetic. The purpose of this study is to examine the magnetic analysis in the human body. This research uses descriptive qualitative method. The data collected by the technique of writing literature. The results obtained by the analysis that the human body contains a metallic element that is iron. Basic properties of the mag-netic material is located on the magnetic properties of the core elements of the human body shaper is hydrogen, H2O molecules and iron. In the human body Fe contained in the grains of red blood (hemoglobin). Other substances that have magnetic properties but is not as strong as the Fe in hemoglobin is the molecule H2O.Key words: magnets, the human body]]>
<![CDATA[PENGEMBANGAN MEDIA POSTER BERBASIS PENDIDIKAN KARAKTERUNTUK MATERI GLOBAL WARMING ]]>
<![CDATA[Maiyena, Sri]]>
<![CDATA[ Jurnal Materi dan Pembelajaran Fisika Vol 3, No 1 (2013): Jurnal Materi dan Pembelajaran Fisika ]]>
Publisher : <![CDATA[Universitas Sebelas Maret Surakarta ]]>
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<![CDATA[Penelitian ini dilatar belakangi oleh kesulitan mahasiswa dalam memahami konsep global warming dan penanaman nilai-nilai karakter sehingga perlu dirancang media poster berbasis pendidikan karakter. Media poster berbasis pendidikan karakter ini sudah valid menurut validator. Penelitian ini bertujuan untuk melihat kepraktisan dari media poster berbasis pendidikan karakter yang telah dikembangkan pada perkuliahan Ilmu Alamiah Dasar. Kepraktisan dari media poster ditinjau dari kemudahan penggunaan media poster oleh mahasiswa.Jenis penelitian yang digunakan adalah penelitian pengembangan. Penelitian pengembangan digunakan untuk mendapatkan media poster yang praktis. Kepraktisan bahan ajar diperoleh dari ujicoba terbatas pada mahasiswa yang sudah mengambil IAD. Instrumen penelitiannya adalah angket responden.Hasil penelitian pengembangan media poster berbasis pendidikan karakter sudah sangat praktis menurut mahasiswa,dengan persentase 81.9 %. Kata kunci: media poster berbasis pendidikan karakter, praktis, global warming]]>
<![CDATA[Kajian Analisis Konsumsi Daging Sapi dan Daging Babi Ditinjau dari Kesehatan ]]>
<![CDATA[Maiyena, Sri]]>;
<![CDATA[Mawarnis, Elvy Rahmi]]>
<![CDATA[ Jurnal Pendidikan Tambusai Vol. 6 No. 1 (2022): 2022 ]]>
Publisher : <![CDATA[LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia ]]>
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DOI: 10.31004/jptam.v6i1.3359
<![CDATA[Daging merupakan salah satu sumber protein hewani yang cukup berperan. Tujuan penelitian ini untuk mengkaji tinjauan kesehatan dari mengkonsumsi daging sapi dan daging babi. Metode penelitian yang digunakan yaitu metode kualitatif deskriptif. Berdasarkan studi pustaka diperoleh bahwa mengkonsumsi daging babi dapat menimbulkan berbagai penyakit seperti kanker kolorektal, penyakit hati, hepatitis E, cacingan, dan multiple sclerosis, sedangkan mengkonsumsi daging sapi tidak menimbulkan berbagai macam penyakit.]]>
<![CDATA[The Implementation of Scientific Approach for Cooperative Learning Model Typed Inside Outside Circle (IOC) Toward the Science Learning Outcomes of the Seventh Graders of Lawang Public Islamic JHS Mandahiling ]]>
<![CDATA[Maiyena, Sri]]>;
<![CDATA[Khaira, Kuntum]]>;
<![CDATA[Oktavia, Widia]]>
<![CDATA[ Impulse: Journal of Research and Innovation in Physics Education Vol. 1 No. 1 (2021): Impulse: Journal of Research and Innovation in Physics Education ]]>
Publisher : <![CDATA[Pendidikan Fisika FITK UIN Sunan Kalijaga ]]>
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DOI: 10.14421/impulse.2021.11-02
<![CDATA[The science learning outcomes of grade VIII students at MTsN Lawang Mandahiling are still low. Students physics's low learning outcomes are because teachers still dominate physics learning, and the intensity of student involvement when learning is a little. This study aims to determine how to apply a scientific approach to the Inside-Outside Circle cooperative learning model for students' physics learning outcomes. This type of research is quasi-experimental research, with the research design used is posttest only control group design. Sampling used random sampling, resulting in two sample classes, namely class VIII.2 as the experimental and VIII.3 as the control class. The data collection used a test of student learning outcomes on knowledge competencies in a multiple-choice test of 20 items. The competency data of students' attitudes and skills used observation sheets which were analyzed qualitatively descriptive. The results of the final tests conducted in the study showed that the physics learning outcomes of students in the experimental class were better than the control class. The average final score of students for knowledge competence in the experimental class and control class, respectively, was 78.00 and 66.00. For attitudinal competence, the average scores obtained by the experimental class and control class were 68.98 and 65.34, respectively. For the competency skills, the average scores obtained by the experimental class and control class are 74.22 and 68.25, respectively. Hypothesis testing is done by using a t-test. From the calculation on knowledge competency, the result of tcount = 3.07 while ttable = 1.684; on attitude competence, the price of tcount = 2.29; on skills competency, the tcount = 4.26; while ttable = 1.684 while t table = 1.684 at the real level α = 0.05. It means that tcount> ttable so that H0 is rejected and H1 is accepted. It can be concluded that the students' physics learning outcomes in applying the synthetic approach to the Inside-Outside Circle cooperative learning model are better than the physics learning outcomes of students who do not use the Inside-Outside Circle cooperative learning model in solar system subject matter in grade VIII MTsN Lawang Mandahiling.]]>
