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All Journal VALENSI POSITRON Jurnal Elementer (Elektro dan Mesin Terapan) Indonesian Journal of Chemistry Jurnal Fisika : Fisika Sains dan Aplikasinya JTM - Jurnal Teknik Mesin Magnetic: Research Journal of Physics and It’s Application Jurnal Nasional Pengabdian Masyarakat Archive: Jurnal Pengabdian Kepada Masyarakat Jurnal Pengabdian Kepada Masyarakat (JPKM) Zadama: Jurnal Pengabdian Masyarakat J-Icon : Jurnal Komputer dan Informatika Jurnal Pendidikan dan Pengabdian Masyarakat Molekul: Jurnal Ilmiah Kimia ABDI UNISAP: Jurnal Pengabdian Kepada Masyarakat
Johannes, Albert Zicko
Universitas Nusa Cendana
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Other

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Rancang Bangun Alat Pemantau Dan Kontrol Kondisi Ruangan Green House Untuk Budidaya Tanaman Stroberi Berbasis Internet Of Things (IoT) Tarigan, Jonshon; Albert Zicko Johannes; Martelda Natbais; Ari Bangkit Sanjaya Umbu
Jurnal ELEMENTER (Elektro dan Mesin Terapan) Vol. 9 No. 1 (2023): Jurnal Elektro dan Mesin Terapan (ELEMENTER)
Publisher : Politeknik Caltex Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35143/elementer.v9i1.5877

Abstract

Strawberries are horticultural crops that can grow well in subtropical regions. Strawberries require cool environmental conditions with temperatures between 17°C-20°C and humidity between 80% -90%. Cultivating strawberries in the tropics is a challenge in itself because of the temperature and humidity in this area. One way to cultivate strawberry plants in the tropics is to use a Green House. Green House is designed to maintain the temperature and humidity according to the needs of the strawberry plants. This study aims to create a system monitoring and controlling greenhouses using the internet of things. Users can  monitor and control the condition of the Green House via an Android smartphone with the Blynk application. When the air temperature and humidity values are in the Green House, the system will work to readjust the temperature and humidity in the Green House. This system uses ESP32 as the control center and a DHT22 sensor to measure air temperature and humidity. Based on the results of the design and performance analysis of the tool, the accuracy of the air temperature gauge is 99.52% and the air humidity is 99.29%. The system successfully controlled the temperature and humidity in the Green House room for 23 days of testing. 
DFT Insights into the Structural, Mechanical, Electronic and Optical Properties of Novel InZnCl3 and InCdCl3 Chloro-Perovskites Pingak, Redi Kristian; Ngara, Zakarias Seba; Johannes, Albert Zicko; Bukit, Minsyahril; Tanesib, Jehunias Leonidas; Nitti, Fidelis; Sianturi, Hery Leo; Pasangka, Bartholomeus
Indonesian Journal of Chemistry Vol 24, No 5 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.94870

Abstract

The ABX3 perovskite materials have recently emerged as one of the most promising materials for optoelectronic applications. In the present study, novel perovskites in the form of InZnCl3 and InCdCl3 are computationally investigated to determine their key characteristics, including structural, mechanical, electronic, and optical characteristics. These characteristics were evaluated using the density functional theory (DFT) implemented in the quantum espresso code. The results indicated that both materials exhibit chemical, dynamic, and mechanical stability. Moreover, these perovskites are predicted to be ductile, rendering them suitable for a broad array of optoelectronic applications, including solar cells. The electronic band structure and the density of states of the materials revealed their characteristics as indirect semiconductors with band gap energy values of 0.96 eV for InZnCl3 and 1.83 eV for InCdCl3 perovskites. The optical properties calculations also unveiled that these perovskites possess strong absorption in the visible-ultraviolet spectrum (up to 106 cm−1) and low reflectivity. The calculated refractive index and extinction coefficient of the compounds were also predicted in this study. These collective findings strongly suggest the potential applications of these novel materials in optoelectronic devices.
PELATIHAN BUDI DAYA TANAMAN MEMANFAATKAN ALAT UKUR FISIKA BAGI ALUMNI DAN MAHASISWA DALAM MENINGKATKAN KEMAMPUAN BERWIRAUSAHA Tarigan, Jonshon; Sianturi, Hery Leo; Johannes, Albert Zicko; Wahid, Abdul; Lapono, Laura A. S.; Ngara, Zakarias Seba; Pasangka, Bartholomeus; Tanesib, Jehunias L.; Pingak, Redi Kristian; Warsito, Ali; Sutaji, Hadi Imam; Bernandus, Bernandus; Mbiliyora, Christine
Jurnal Pengabdian Kepada Masyarakat Vol 4 No 2 (2024): Desember 2024
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Tujuan dari kegiatan ini adalah untuk menumbuhkan minat dan meningkatkan kemampuan berwirausaha untuk alumni dan mahasiswa dalam budidaya tanaman dengan memanfaatkan alat pengukuran fisika. Masa tunggu yang lama untuk mendapatkan pekerjaan bisa menjadi beban psikologis bagi lulusan baru. Oleh karena itu, Program Studi Fisika Fakultas Sains dan Teknik Universitas Nusa Cendana (FST Undana) menawarkan pelatihan budidaya tanaman untuk alumni dan mahasiswa. Pelatihan ini berfokus pada penggunaan alat ukur fisika untuk mengukur sifat fisis tanah guna mengoptimalkan potensi budidaya tanaman. Pelatihan mencakup presentasi materi, diskusi, dan praktek langsung terkait budidaya tanaman menggunakan alat pengukuran fisika. Keberhasilan kegiatan ini dievaluasi melalui pertanyaan survei yang diberikan kepada peserta. Jawaban dari hasil survei menunjukkan pelatihan ini berhasil dijalankan dengan sangat baik. Selain itu, umpan balik dari peserta menunjukkan peningkatan motivasi untuk terlibat dalam budidaya tanaman dalam meningkatkan kemampuan berwirausaha.
PELATIHAN PENULISAN ARTIKEL ILMIAH BAGI GURU-GURU SMA/SMK DAN SMP KOTA KUPANG Ngara, Zakarias Seba; Pasangka, Bartholomeus; Ngana, Frederika Rambu; Sianturi, Hery Leo; Bernandus; Pingak, Redi Kristian; Johannes, Albert Zicko; Bukit, Minsyahril; Tarigan, Jhonson
Jurnal Pendidikan dan Pengabdian Masyarakat Vol. 7 No. 2 (2024): Mei
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppm.v7i2.6442

Abstract

Pelatihan Penulisan Artikel Ilmiah bagi Guru-guru SMA/SMK dan SMP di kota kupang dalam kegiatan Pengabdian kepada Masyarakat telah dilaksanakan pada tanggal 9 Nopember 2021 bertempat di SMA Katolik Sin Carolus Penfui Kota Kupang oleh program Studi Fisika, Fakultas Sains dan Teknik Undana. Tujuan kegiatan pengabdian ini adalah melatih para guru untuk menemukan ide atau masalah yang diteliti dan meningkatkan kemampuan menulis artikel ilmiah dari hasil-hasil penelitian yang telah dilakukan serta prosedur publikasi artikel ilmiah pada jurnal-jurnal terakreditasi baik nasional maupun internasional. Pelatihan penulisan artikel ilmiah ini dilaksanakan menggunakan metode metode ceramah, diskusi, dan tanya jawab. Berdasarkan pengamatan pada saat kegiatan berlangsung, Peserta pelatihan sangat antusias mengikuti kegiatan ini yang ditandai dengan banyaknya pertanyaan yang diajukan oleh peserta pelatihan dan memperoleh sesuatu yang baru dalam pelatihan ini khususnya bagaimana menemukan sebuah ide atau permasalahan dalam penelitian dan solusi ,menyelesaikannya. Selain itu, peserta pelatihan lebih memahami etika penulisan artikel ilmiah serta prosedur pengiriman artikel ilmiah pada jurnal terakreditasi. Peserta pelatihan mengajukan pertanyaan-pertanyaan yang berkaitan dengan kendala-kendala yang mereka hadapi baik ketika mereka melakukan penelitian, penulisan artikel ilmiah maupun pengiriman artikel ilmiah pada jurnal terakrediatasi. Pelatihan penulisan artikel ilmiah ini dapat memberikan wawasan pengetahuan yang lebih luas bagi peserta pelatihan khususnya cara menemukan ide penelitian, metode menyelesaikan idenya, penulisan artikel ilmiah dan prosedur pengiriman artikel ilmiah untuk dipublikasikan pada jurnal terakreditasi.
GOOGLE TEACHABLE MACHINE: PEMANFAATAN MACHINE LEARNING BERBASIS CNN UNTUK IDENTIFIKASI CEPAT BATUAN MINERAL KALSIT, KUARSA DAN MAGNETIT Johannes, Albert Zicko; Bukit, Minsyahril; Betan, Agustinus D D; Tarigan, Jonshon
J-Icon : Jurnal Komputer dan Informatika Vol 12 No 2 (2024): Oktober 2024
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jicon.v12i2.15170

Abstract

Google Teachable Machine is a web-based application that allows users to create a machine learning model without the need for coding. The application utilizes Convolutional Neural Networks (CNN) in its process. In this study, Teachable Machine was utilized to create a machine learning model capable of identifying specific mineral rocks, particularly magnetite, calcite, and quartz. The research procedure was conducted through several stages: Sample Collection, Sample Classification (Dataset), Model Training, and Evaluation Process. Sample data in the form of mineral rock images were obtained and downloaded from Google. The data was then divided into three mineral classes: magnetite, calcite, and quartz, which were used as inputs in the Teachable Machine. Model training in Teachable Machine used input epochs of 100, batch size of 64, and learning rate of 0.0001. The results of the Teachable Machine modeling were then evaluated, showing that the obtained model could recognize magnetite, calcite, and quartz minerals with an average accuracy, precision, recall, specificity, and F1-score of 91.11% (86.67%), 87.30%, 86.67%, 93.33%, and 86.50% respectively. This research indicates that the utilization of Teachable Machine assists in quick, accurate, and easy identification, thereby contributing to speeding up the process of mineral rock analysis, decision-making, and exploration strategy development. Additionally, these results demonstrate the potential for broader development of this application in various fields of study.
IDENTIFIKASI LAPISAN BAWAH PERMUKAAN MENGGUNAKAN METODE GEOLISTRIK DI SEKITAR REMBESAN LUMPUR DI DESA BAKUSTULAMA, KECAMATAN TASIFETO BARAT, KABUPATEN BELU Sianturi, Hery Leo; Lau, Claudya Hendrika Putri; Johannes, Albert Zicko; Tanesib, Jehunias L.
Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 10 No 1 (2025): Jurnal Fisika : Fisika Sains dan Aplikasinya
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/fisa.v10i1.20811

Abstract

The study has been conducted to identify subsurface layers using the Wenner-Schlumberger geoelectric method. This research aims to understand the rock layering and hydrogeology at the research site. The research was conducted with a field survey on four 480-meter-long tracks in Bakustulama Village. Rock resistivity data was measured using a resistivity meter and analyzed using Res2DinV software to produce a 2D cross-sectional model. This method utilizes rock resistivity to determine the nature and layering of rocks in the subsurface, focusing on potentially water-saturated zones and fractures. The results show that the subsurface layer in Bakustulama Village consists of sandstone in the upper layer (0-20 meters) with medium resistivity (100-700 Ωm), followed by a highly water-saturated clay layer with low resistivity (0-100 Ωm), and a limestone layer with high resistivity (700-1000). The subsoil in the Bakustulama Area is diversely arranged, with sandstone layers at the surface to a depth of about 20 meters that suspected to have high porosity and are easily drained by water. Underneath, water-saturated clay layers are dominant and difficult for fluids to pass through.
LOKAKARYA PENULISAN ARTIKEL ILMIAH BAGI PENGAJAR FISIKA SMA DAN SMK KOTA KUPANG Ngara, Zakarias Seba; Pasangka, Bartholomeus; Bernandus, Bernandus; Johannes, Albert Zicko; Tarigan, Jhonson
Jurnal Pengabdian Kepada Masyarakat Vol 5 No 1 (2025): Juni 2025
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Lokakarya penulisan Artikel Ilmiah (AI) bagi Pengajar (Guru-guru) SMA dan SMK di Kota Kupang telah dilaksanakan dan bertujuan untuk meningkatkan kemampuan Guru-guru Fisika SMA dan SMK di Kota Kupang dalam menulis AI dan mempublikasikannya pada jurnal terakreditasi. Lokakarya penulisan AI ini menggunakan metode ceramah, diskusi, dan tanya jawab. Melalui Lokakarya ini, Guru-guru Fisika SMA dan SMK memiliki kemampuan untuk menemukan ide, merancang metode penelitian, teknik menulis AI dan prosedur publikasi ke jurnal terakreditasi. Hasil lokakarya ini menunjukkan bahwa Guru-guru Fisika SMA dan SMK memiliki antusias yang tinggi mengikuti kegiatan ini yang ditandai dengan banyaknya pertanyaan yang diajukan tentang penulisan AI. Dengan demikian, lokakrya ini dapat meningkatkan kemampuan bagi Guru-guru Fisika SMA dan SMK untuk menemukan ide atau masalah penelitian dalam bidang Fisika, merancang metode untuk menyelesaikan masalah, menulis AI dan mengirimkan AI ke jurnal internasional atau nasional terakreditasi.
PELATIHAN KEWIRAUSAHAAN BUDIDAYA IKAN LELE BERBASIS ALAT UKUR DIGITAL BAGI ALUMNI DAN MAHASISWA Tarigan, Jonshon; Johannes, Albert Zicko; Lapono, Laura A. S.; Wahid, Abdul; Sianturi, Hery Leo; Mbiliyora, Christine
Jurnal Pengabdian Kepada Masyarakat Vol 4 No 1 (2024): Juni 2024
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Tujuan dari kegiatan ini adalah untuk menumbuhkan minat dan meningkatkan keterampilan kewirausahaan di antara alumni dan mahasiswa dalam budidaya lele menggunakan alat pengukuran digital. Masa tunggu yang lama untuk mendapatkan pekerjaan bisa menjadi beban psikologis bagi lulusan baru. Oleh karena itu, Program Studi Fisika Fakultas Sains dan Teknik Universitas Nusa Cendana (FST Undana) menawarkan pelatihan kewirausahaan budidaya lele untuk alumni dan mahasiswa. Pelatihan ini berfokus pada penggunaan alat berbasis digital untuk mengukur sifat fisis guna mengoptimalkan potensi budidaya lele. Pelatihan mencakup presentasi materi, diskusi, dan praktek langsung terkait budidaya lele menggunakan alat pengukuran digital. Keberhasilan kegiatan ini dievaluasi melalui pertanyaan survei yang diberikan kepada peserta. Jawaban dari hasil survei menunjukkan pelatihan ini berhasil dijalankan dengan sangat baik. Selain itu, umpan balik dari peserta menunjukkan peningkatan motivasi untuk terlibat dalam budidaya lele.
CHARATERIZATION ON OPTICAL PROPERTIES OF CARBON NANODOTS FROM SCREW PINE LEAVES FOR COPPER ION DETECTION Ngara, Zakarias Seba; Lende, Damaris Natalia; Johannes, Albert Zicko; Bukit, Minsyharil
Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 10 No 2 (2025): Jurnal Fisika : Fisika Sains dan Aplikasinya
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/fisa.v10i2.25384

Abstract

Here, we fabricate, characterize and synthesize the highly fluorescent carbon nanodots (C-dots) from screw pine leaves (SPL). The objectives of this research are to fabricate C-dots from SPL using the carbonization method which is followed by sonication, centrifugation and filtering processes, to charactrize the optical properties of the as-prepared C-dots, and to applied these C-dots as sensor for detection of copper (Cu2+) ions. The optical properties of the C-dots can be characterized from their absorption (Abs), photoluminescence (PL), and Fourier Transform infrared (FTIR) spectra. Whereas the application of the as-produced C-dots as sensor for Cu2+ ions detection can be investigated by the quenching of PL intensity of C-dots after coordination with Cu2+ ions. The analysis of Abs, PL, and FTIR spectra demonstrated the formation of C-dots from SPL in ethanol solutiion. These C-dots have an absorption peak at 276 nm corresponding to the π→π* transition and PL peak at 401 nm corresponding to their blue fluorescence. Fortunately, the interaction between the as-prepared C–dots and Cu2+ ions displayed the PL quenching of the C-dots with the LOD value as low as 2.85 μM. Based on these results, these C-dots exhibited the sensing system for Cu2+ ions detection
Fabrication and Synthesis of Fluorescent Carbon Nanodots from Black Sticky Rice as Probes for detection Mg2+ ions Ngara, Zakarias Seba; Mamut, Anastasia; Pingak, Redi Kristian; Johannes, Albert Zicko; Lerrick, Reinner Ishaq; Refli, Refli
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 11, No. 2, November 2025
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v11i2.45394

Abstract

Herein, fluorescent carbon nanodots (C-dots) with average diameter of 5.51 nm were fabricated from black sticky rice by using carbonization method. These C-dots have been synthesized with magnesium (Mg2+) ions to investigate their potential application as probes for detection Mg2+ ions. The as-obtained C-dots were measured their absorption (Abs), photoluminescence (PL), and FTIR spectra, X-ray diffraction (XRD) patterns and transmission electron microscopy (TEM) image. According to their Abs spectrum, the Abs peak at 276 nm confirmed the presence of C-dots in ethanol solution. Fortunately, the PL peak at 427 nm corresponded to their blue emission color. The XRD patterns and the TEM image confirmed also the formation of amorphous state and monodispersed spherical C-dots, respectively. When the as-prepared C-dots were synthesized with Mg2+ ions, the PL intensities of C-dots quenched as increasing the concentration of Mg2+ ions. A characteristic PL quenching of the C-dots through Mg2+ chelation demonstrated the sensing system up to the detection limit of 2.98 µM. This is the first reporting the application of C-dots as sensors for detection Mg2+ ions. These findings can pave the large opportunity for application of these C-dots in sensing, bioimaging, drug delivery, and so on.
Co-Authors Abdul Wahid Abdul Wahid Abdul Wahid Agustinus D Betan Ali Warsito Andreas Ch. Louk Andreas Christian Louk Andreas Christian Louk Anggi Arni Biha Ari Bangkit Sanjaya Umbu Atika S. Ahab Bartholomeus Pasangka Bernandus Bernandus Bernandus Bernandus, Bernandus Betan, Agustinus D D Bethan, Agustinus Deka Bukit, Minsyahril Bukit, Minsyharil Christine Mbiliyora Christine Mbiliyora Dolin Marlince Tameno Ernawati Kawa Fidelis Nitti Freinademetz Anggur Gerda Pandu Hadi I Sutaji Hery L Sianturi Hery L. Sianturi Hery Leo Sianturi Intan M.P. Dewi Jacob, Johanes Eliaser Jonshon Tarigan Jonshon Tarigan Julius Bunga Tedju juventus mangili Kristantia Mida Subah Kristina Siu Lapono, Laura A. S. Lau, Claudya Hendrika Putri Laura A. S. Lapono Lende, Damaris Natalia Lerrick, Reinner Ishaq Mamut, Anastasia Maria Lurumutin Umrisu Maria Magdaline Bupu Marselinus E. Dandara Martelda Natbais Minsyahril Bukit Minsyahril Bukit Minsyahril Bukit Minsyahril Bukit Ndii, Meksianis Z Pasangka, Bartholomeus Pascoleta Inacio Philips Bramantia Mudamakin Pingak, Redi Kristian Refli, Refli Renaldo Apriandi Kasa Resiona, Baltazar A T San Arnolus Kain Setiawan, Ely Sevarianus Ramli Severianus Wunda Sianturi, Hery Leo Solly Joyce M. Kase Sutaji, Hadi Imam Tanesib, Jehunias Leonidas Tarigan, Jhonson Tarigan, Jonshon Valerianus Jehadu Veronika Hoar Seran Yongki Pawe Due Yuditha Ignasia Bete Zakarias Seba Ngara