https://sintechcomjournal.com/index.php/stc/issue/feedScience, Technology and Communication Journal2024-08-19T15:27:35+07:00Rahmad Abdillahrahmad@sintechcomjournal.comOpen Journal Systems<p>Sintechcom Journal: Science, Technology, and Communication Journal is a peer-reviewed journal published regularly in February, June, and October by the <u>Lembaga Studi Pendidikan and Rekayasa Alam Riau</u> in co-working with the Indonesian physical society (PSI)-Chapter of Riau. Sintechcom is a periodical publication that publishes scientific articles on research results in the fields of Basic Science, Engineering, and Telecommunications.</p> <p>Sintechcom journal receives research articles from researchers around the globe, as well as undergraduate and graduate students. Every submitted manuscript has the opportunity to maximize its scientific potential through input from a team of editors and reviewers who are experts in their fields. So that published articles can contribute to the advancement of Science, Technology and Communication. Paper template <a style="background-color: #ffffff;" href="https://drive.google.com/file/d/1E44KN_XUadzQA_Vg7_bEEL8HX4ymzukx/view?usp=sharing" target="_blank" rel="noopener"><strong>here</strong></a></p>https://sintechcomjournal.com/index.php/stc/article/view/262Novel approach peak tracking method for FBG: Gaussian polynomial technique2024-08-18T12:08:50+07:00Bunga Meyziabungameyzia@gmail.comSaktioto Saktiotosaktioto@lecturer.unri.ac.idTengku Emrinaldisaktioto@lecturer.unri.ac.idNadiah Wanarasaktioto@lecturer.unri.ac.idDwi Hantosaktioto@lecturer.unri.ac.idBambang Widyatmokowidiyatmokobambang@gmail.comAgitta Rianarissaktioto@lecturer.unri.ac.idMohamad Syahadisaktioto@lecturer.unri.ac.idHaryana Mohd Hairisaktioto@lecturer.unri.ac.idMohammed Fadhalisaktioto@lecturer.unri.ac.id<p>This paper presents a novel approach for tracking the peaks in the FBG spectrum using the Gaussian polynomial method. The proposed algorithm involves preprocessing the FBG signal, detecting the peaks, and fitting the peaks with a Gaussian function. The performance of the algorithm is evaluated using both simulated and experimental FBG spectra. This method involves fitting a Gaussian function to the peak of interest and using the fitted parameters to estimate peak height, width, and location. The method is highly accurate and precise and can provide detailed information about peak shape and position, making it effective for tracking complex or overlapping peaks. However, the method can be computationally intensive and may require careful selection of initial parameters to ensure accurate results. Despite these limitations, the Gaussian polynomial method is a powerful tool for peak tracking and analysis in various application.</p>2024-06-30T00:00:00+07:00Copyright (c) 2024 Science, Technology and Communication Journalhttps://sintechcomjournal.com/index.php/stc/article/view/263Determination of groundwater quality using geochemical methods in densely populated housing in Kubang Jaya Village, Siak Hulu District, Kampar Regency2024-08-18T13:36:34+07:00Juandi Muhammadjuandi@lecturer.unri.ac.idWinda Pangestijuandi@lecturer.unri.ac.id<p>The determination of groundwater quality in dense residential housing in Kubang Jaya Village, Siak Hulu District, Kampar Regency has been carried out using physical and chemical parameters. This study aims to determine the quality of groundwater by taking samples of borehole water. Sampling was carried out at Ginting Housing; the number of samples taken was 17, and the distance between each sampling point was around 200 m. Parameters analyzed to test groundwater quality were turbidity, conductivity, pH, and total dissolved solids (TDS). Based on the results of groundwater quality tests in terms of turbidity level parameters, the average value was 2.0 NTU, conductivity was 191.7 ppm, pH was 4.28, and TDS was 132.4 mg/l. Overall, the results of the water quality test in this research area are unfit for consumption because they are too acidic, but they are still safe and suitable for daily needs.</p>2024-06-30T00:00:00+07:00Copyright (c) 2024 Science, Technology and Communication Journalhttps://sintechcomjournal.com/index.php/stc/article/view/267Effect of ultraviolet radiation on total electron content in global positioning system observations2024-08-19T11:12:54+07:00Fauzan Iqbalsaktioto@lecturer.unri.ac.idSaktioto Saktiotosaktioto@lecturer.unri.ac.idAsnawi Huseinsaktioto@lecturer.unri.ac.idNur Aisyah Arifinsaktioto@lecturer.unri.ac.idHewa Yaseen Abdullahsaktioto@lecturer.unri.ac.id<p>Climate is one of the basic elements for understanding natural phenomena and the development of civilizations throughout history. Climate change determines most of the modifications of human nature and culture, as human must adapt to changing conditions which are sometimes an important element that can enhance or threaten its existence. This study aims to determine the characteristics of changes in the total electron content (TEC) and determine the radiation has influence to TEC through observing the global positioning system (GPS) in the ionosphere. In addition, the TEC is a measure of ionospheric parameters that affect the radiation that occurs. This study uses secondary data obtained from the Cibinong Spatial Global Station in 2008 – 2012. This research was conducted as a comparison of the TEC and extreme ultraviolet (EUV). The method used is a simple statistical method which seeks the maximum and minimum the TEC and EUV data, as well as the correlation method to relate the coefficient of determination TEC and EUV. As the results the maximum TEC value is 55.895 TECU which occurred in 2012 at 7 unit time (UT) and the minimum TEC value is 1.955 TECU which occurred in 2010 at 22 UT. The correlation ratio between the TEC and EUV is directly proportional, where the higher the value of the TEC, the higher the EUV value. In closing, TEC and EUV are influence by solar activity.</p>2024-06-30T00:00:00+07:00Copyright (c) 2024 Science, Technology and Communication Journalhttps://sintechcomjournal.com/index.php/stc/article/view/268Properties of BaTiO3 nanoparticles based on FTIR derived using Nephelium lappaceum L. leaf extract2024-08-19T13:08:43+07:00Rahmi Dewirahmi.dewi@lecturer.unri.ac.idYanuar Hamzahyanuar.hamzah@lecturer.unri.ac.idYohana Manikyohana.monica2431@student.unri.ac.idFriska Ziliwurahmi.dewi@lecturer.unri.ac.idNorsinta Ida Simbolonrahmi.dewi@lecturer.unri.ac.idHidayati Syajalirahmi.dewi@lecturer.unri.ac.idShintya Maulidyarahmi.dewi@lecturer.unri.ac.idYunita Ningrumrahmi.dewi@lecturer.unri.ac.idHarum Fatanahrahmi.dewi@lecturer.unri.ac.id<p>The properties of barium titanate (BaTiO<sub>3</sub>) nanoparticles synthesized with rambutan leaf extract (<em>Nephelium lappaceum L.</em>) were analyzed using Fourier transform infrared spectroscopy (FTIR) characterization techniques. Rambutan leaf extract contains bioactive compounds that have the potential to enhance unique physical and chemical properties. This study aims to analyze the properties of the nanoparticles and to characterize the functional groups present in BaTiO<sub>3</sub> nanoparticles synthesized using rambutan leaves. The nanoparticle synthesis process involved extraction, followed by the preparation of a BaTiO<sub>3</sub> solution and doping. The FTIR spectrum displayed characteristic peaks identifying the presence of functional groups. The results indicated that the region 3500 – 3200 cm<sup>-1</sup> corresponds to O–H groups (alcohol and phenolic), the region 1700 – 1600 cm<sup>-1</sup> to C=O groups (carbonyl), the region 1600 – 1500 cm<sup>-1</sup> to C=C groups (alkene), and the region 1200 – 1000 cm<sup>-1</sup> to C–O groups (ether). Each functional group exhibits distinct properties.</p>2024-06-30T00:00:00+07:00Copyright (c) 2024 Science, Technology and Communication Journalhttps://sintechcomjournal.com/index.php/stc/article/view/269FTIR characterization analysis of BaTiO3 nanoparticles synthesized using Terminalia catappa leaf extract2024-08-19T14:00:38+07:00Yanuar Hamzahyanuar.hamzah@lecturer.unri.ac.idRahmi Dewirahmi.dewi@lecturer.unri.ac.idAde Darmawanrahmi.dewi@lecturer.unri.ac.idIntan Syahputrirahmi.dewi@lecturer.unri.ac.idMeinikmawati Laiarahmi.dewi@lecturer.unri.ac.idMiftahul Jannahmiftahul.jannah3910@student.unri.ac.idRuth Cahaya Marta Uli Silabanrahmi.dewi@lecturer.unri.ac.idSilvia Mayang Sarirahmi.dewi@lecturer.unri.ac.idSintia Selfiana Sinagarahmi.dewi@lecturer.unri.ac.idWandra Zuyandrirahmi.dewi@lecturer.unri.ac.id<p>Ferroelectric materials are materials that are in great demand in high-density memory applications, such as ferroelectric random access memory, ferroelectric field effect transistors, negative capacitance field effect transistors, and ferroelectric tunnel junctions. Barium titanate (BaTiO<sub>3</sub>) is a lead-free ferroelectric material with a high dielectric constant and low dielectric loss. The method used is sol gel for the synthesis of BaTiO<sub>3</sub> solution, extract for ketapang (<em>Terminalia catappa</em>) leaves, and characterized by FTIR. The FTIR spectrum synthesized with ketapang leaf extract displays several characteristic peaks in the mid-infrared region (4000 – 400 cm<sup>-1</sup>). These peaks can be determined by the specific vibration mode of the structure and organic compounds contained in the ketapang leaf extract. BaTiO<sub>3</sub> has a cubic perovskite structure with a peak wave number of 600 cm<sup>-1</sup>. Ketapang leaf extract is incorporated into the BaTiO<sub>3</sub> structure. BaTiO<sub>3</sub> has a Ti–O functional group. Ketapang leaf extract has C–O, C=O, C–H, and O–H functional groups.</p>2024-06-30T00:00:00+07:00Copyright (c) 2024 Science, Technology and Communication Journal