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All Journal Jurnal Neutrino : jurnal fisika dan aplikasinya JGE (Jurnal Geofisika Eksplorasi) JOURNAL ONLINE OF PHYSICS Jurnal Pengabdian UntukMu NegeRI BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) JURNAL PHOTON Jurnal Ilmu Fisika Jurnal Pengabdian Papua JURNAL FISIKA PAPUA Sipakaraya : Jurnal Pengabdian Masyarakat
Ngaderman, Hubertus
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Model of Metal-Oxide-Semiconductor Contact Characteristics and Carrier Impurity Concentration in Depletion and Oxide Regions Ngaderman, Hubertus; Sinaga, Ego Srivajawaty
Jurnal Fisika Papua Vol. 3 No. 2 (2024): Jurnal Fisika Papua
Publisher : Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jfp.v3i2.196

Abstract

The aim of this research is to obtain characteristic modeling for forward and reverse voltages and the role of oxide as a barrier in the contact between metal semiconductors. When a forward or reverse voltage is applied, both types of  semiconductor exhibit different characteristics. In this study, only these types are considered. The carrier concentration impurity within the semiconductor, width of the oxide material, depletion region, and active region are also reviewed.  The method used was to examine the concept of a metal – oxide – semiconductor contact. In addition, the basic concept of energy bands is used to explain carrier flow events in semiconductors, which present band gaps, conduction band levels, and valence energy levels. The first research result is the characteristics of a metal – oxide – semiconductor-type connection  when a negative and positive voltage  is applied to a metal plate. The second is to find an equation for determining the concentration of substrate impurities. This equation shows the concentration of impurities in the semiconductor and the width of the oxide material, depletion region, and active region.
Pengenalan Aplikasi Phet Simulation Sebagai Media Pembelajaran Untuk Materi Konsep Getaran di SMA Teruna Bakti Waena Jayapura Ngaderman, Hubertus; Ego Srivajawaty Sinaga; Papilaya, Eva; Truly Theresia Saputrina
Sipakaraya : Jurnal Pengabdian Masyarakat Vol 1 No 1 (2022): Sipakaraya : Jurnal Pengabdian Masyarakat
Publisher : Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/sipakaraya.v1i1.1974

Abstract

The task of a lecturer is to carry out the Tri Dharma of Higher Education, one of which is to do community service. Service activities have been carried out on the fourth week of April 2022 which is located at SMA taruna Bakti Waena Jayapura, the number of students who attended were 28 students and were accompanied by one of the teachers who taught Physics. The material presented was about the introduction of PhET Simulation Application as learning media for Masses and Springs. The goal to be achieved from this activity is so that students get enlightenment about the concept of Masses and Springs through the PhET Simulation application. The method used is lecture, question and answer, demonstration. The results obtained before using the PhET Simulation application, students had little difficulty understanding the concept of Masses and Springs, but after using the application, students understood the concept of Masses and Springs.
Pengenalan Aplikasi Quizizz Sebagai Media Pembelajaran pada Materi Konsep Getaran di SMA Teruna Bakti Waena Jayapura Sinaga, Ego Srivajawaty; Ngaderman, Hubertus; Anou, Kezia Noviani; Saputrina, Truly Theresia; Sudrajad, Bangkit; Tulak, Noper; Napitupulu, Daniel
Sipakaraya : Jurnal Pengabdian Masyarakat Vol 2 No 2 (2024): Sipakaraya : Jurnal Pengabdian Masyarakat
Publisher : Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/sipakaraya.v2i2.3164

Abstract

Mengenal aplikasi Quizizz sebagai media pembelajaran interaktif di era digital merupakan hal yang penting untuk diketahui oleh guru dan siswa. Tercapainya pembelajaran mandiri dengan konsep pembelajaran berdiferensiasi tentu memerlukan fasilitas pendukung. Tak heran jika pemanfaatan teknologi untuk mengoptimalkan pembelajaran mulai banyak digunakan dalam dunia pendidikan. Kegiatan pengabdian yang dilakukan adalah Memperkenalkan aplikasi Quizizz sebagai alat bantu pembelajaran materi konsep getaran di SMA Teruna Bakti Waena Jayapura dengan tujuan membantu guru dan siswa untuk lebih memahami cara penggunaan aplikasi Quizizz dan lebih semangat dalam belajar fisika sehingga memiliki pemahaman yang baik tentang konsep getaran. Hasil dari kegiatan yang dilakukan, siswa dan guru memahami cara penggunaan aplikasi Quizzizz dan siswa lebih tertarik dalam pembelajaran fisika, terbukti dengan nilai rata-rata yang dicapai sebesar 87.
SIMULASI REAKSI ANTARA KATION LITIUM DAN ANION HEKSAFLUOROFOSFAT DENGAN PELARUT ETHYLENE CARBONATE MENGGUNAKAN POTENSIAL LENNARD JONES 12-6 Sinaga, Ego Srivajawaty; Ngaderman, Hubertus; Anou, Kezia Noviani
JOURNAL ONLINE OF PHYSICS Vol. 10 No. 1 (2024): JOP (Journal Online of Physics) Vol 10 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v10i1.37884

Abstract

Peneliti menggunakan parameter dari Lennard Jones dan sistem mekanika statistik yang digunakan adalah sistem assembli mikrokanonik. Sistem dari penelitian dengan topik baterai litium ion ini adalah ineraksi antara reaktan dan produk yang terkreasi di dalam elektrolit baterai. Pada saat garam litium hexafluorophosphate  berinteraksi dengan pelarut etilen karbonat (EC) maka kation  menjadi terikat dengan anion  dan dikelilingi oleh pelarut EC. Ion  dan   dalam bentuk pasangan bermigrasi sebagai satu kesatuan. Variabel independen yang merupakan besaran kunci pada penelitian ini adalah kecepatan dan dari kecepatan molekul tersebut maka akan dapat ditentukan energi sistem. Tujuan penelitian adalah mencari distribusi kecepatan Maxwell. Setiap molekul mempunyai energi beragam namun kemunculannya akan terlihat secara lebih akurat jika kita melihat distribusi kecepatan sedangkan kecepatan secara tersendiri mempunyai kaitan dengan energi kinetik. Peneliti mengambil sistem dengan jumlah partikel tetap, volume tetap dan energi total tetap. Energi kinetik dan energi potensial juga disajikan disini dimana peneliti menggunakan ruang pada sistem assembli mikrokanonik dimana jumlah partikel , volume  dan energi  bernilai tetap. Penelitian ini menggunakan metode simulasi MD klasik untuk mencari distribusi probabilitas kecepatan Maxwell.
Water Quality Analysis Based on Chemical and Physical Parameters in the Acai River, Jayapura City Bungasalu, Benny Abraham; Anou, Kezia; Sinaga, Ego Srivajawaty; Ngaderman, Hubertus; Bunga', Martina; Sinaga, Novianti
Photon: Jurnal Sain dan Kesehatan Vol. 15 No. 1 (2024): Journal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v15i1.8011

Abstract

The Acai River functions as a primary channel located in the middle of Abepura City, which ends downstream at Yotefa Bay. The presence of various anthropogenic activities can provide a pollution burden to the environment, one of which is the decline in river water quality. This study aims to determine the water quality of the Acai River in Jayapura City. The study was conducted by collecting data through surveys and taking river water samples at six points. The parameters studied included temperature, water color, pH, TDS, DHL, BOD, and COD. The results of the study showed that the concentrations that exceeded the class II water quality standard limits, namely the BOD and COD concentrations at stations 1, 2, 3, 4, 5, and 6 exceeded the quality standard limits. Based on the Pollution Index value, at stations 1, 2, 3 the conditions were lightly polluted, while the conditions at stations 4, 5, 6 were classified as moderately polluted. It can be concluded that from upstream to downstream the water quality of the Acai River has increased in its water quality parameters
Increasing the Space for Creativity and Skills Through the Introduction of Ecoprinting Techniques to Youth Groups Anou, Kezia; Bungasalu, Benny Abraham; Sinaga, Ego Srivajawaty; Ngaderman, Hubertus; Saputrina, Truly Theresia
Jurnal Pengabdian UntukMu NegeRI Vol. 8 No. 3 (2024): Pengabdian Untuk Mu negeRI
Publisher : LPPM UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jpumri.v8i3.7963

Abstract

The ecoprint coloring technique has been widely applied by people from various circles because it uses natural materials that are easy to obtain and do not pollute the environment. Ecoprint is one of the batik making activities through a process of transferring color and shape to fabric through direct contact to produce environmentally friendly products. The partners for this activity are students from the Puldama district, Yahukimo Regency who are studying in Sentani, Jayapura Regency. This Ecoprint training activity is motivated by the condition of partners who do not receive enough training so that they often spend time without any useful activities being carried out. This activity consists of two stages, namely preparation and implementation. The methods used are lectures and mentoring. The results that have been achieved are that participants have knowledge about how to create works of art in the form of printed motifs on fabric using the ecoprint technique, participants have the skills to print motifs on fabric using the ecoprint technique. Participants showed an enthusiastic attitude to continue these skills as an initial form of entrepreneurship.
Pengenalan Aplikasi Blooket Sebagai Media Pembelajaran Di Sma Teruna Bakti Waena Jayapura Sinaga, Ego Srivajawaty; Hubertus Ngaderman; Kezia Noviani Anou; Bangkit Sudrajad; Daniel Napitupulu; Benny Abraham Bungasalu
Jurnal Pengabdian UntukMu NegeRI Vol. 9 No. 1 (2025): Pengabdian Untuk Mu negeRI
Publisher : LPPM UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jpumri.v9i1.8944

Abstract

Conventional learning makes students easily bored so that the development of information and communication technology has had a positive impact on progress in the world of education such as the internet and e-learning, making learning possible from anywhere. Educational games can be used as a fun and interactive learning media. One of the educational games is blooket. The purpose of this service activity is to make students more enthusiastic in learning physics and proficient in using the blooket application. The methods used are lectures and practices. The results obtained after carrying out this service activity students prefer educational games compared to quizzes that are done conventionally and students can use the blooket application well.
CLASSICAL MOLECULAR DYNAMICS (MD) SIMULATION OF SALT AND SOLVENT SOLVATION EVENTS IN LITHIUM ION BATTERIES TO DETERMINE ENERGY FLUCTUATIONS Ngaderman, Hubertus; Sinaga, Ego Srivajawaty; Bungasalu, Benny Abraham
Jurnal Neutrino:Jurnal Fisika dan Aplikasinya Vol 17, No 2 (2025): APRIL
Publisher : Universitas Islam Negeri Maulana Malik Ibrahim Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/neu.v17i2.29233

Abstract

This study looks at how salt and solvent mix, as shown by the final positions of particles in a simulation. The simulation uses Lennard-Jones parameters and runs in a closed system with fixed energy. The goal is to see if the particles follow the Maxwell velocity distribution. When lithium hexafluorophosphate salt mixes with ethylene carbonate, solvation occurs. The simulation runs for 100 and 2000 steps to get accurate results. At the start, no chemical reactions or outside forces are involved just the natural movement of particles. For fluorine, after 2000 steps, the particles start to group in one area, showing the system isn’t balanced yet. Since velocity is linked to kinetic energy, it's important to look at the most common speeds of lithium, phosphorus (P), fluorine (F), and lithium-oxygen carbonyl (Li-OC). At 100 steps, the speed data looks good for lithium, phosphorus, and fluorine, except for how fluorine interacts with itself. So, the number of steps was increased to 2000. But even then, the particles don’t spread out fully, which isn’t realistic nature doesn’t leave space. That’s why the simulation should run up to 3000 steps for better, more realistic results.
MENENTUKAN ENTROPI PADA PERISTIWA SOLVASI LITIUM HEKSAFLUOROFOSFAT DAN ETILEN KARBONAT DI DALAM SISTEM ENSEMBEL DENGAN JUMLAH PARTIKEL, VOLUME DAN ENERGI SEBAGAI VARIABEL KONTROL Ngaderman, Hubertus; Sinaga, Ego Srivajawaty
JOURNAL ONLINE OF PHYSICS Vol. 10 No. 3 (2025): JOP (Journal Online of Physics) Vol 10 No 3
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v10i3.45615

Abstract

Tujuan penelitian adalah mencari variabel entropi. Akhir dari peristiwa simulasi Monte Carlo (MC) adalah tercapainya kesetimbangan termodinamika,  yaitu saat entropi sistem mencapai nilai maksimum. Ketika entropi sistem maksimum maka distribusi probabilitas Boltzmann dapat diturunkan sehingga kita mendapat faktor Boltzmann. Penurunan faktor Boltzmann tersebut diambil dari variabel entropi dengan cara memaksimumkan variabel entropi tersebut. Entropi didefinisikan sebagai ukuran ketidakteraturan atau keacakan sistem. Sistem akan cenderung menuju keadaan dengan entropi maksimum. Pada saat garam  berinteraksi dengan pelarut  maka terjadi peristiwa solvasi dan peristiwa ini akan menyebabkan molekul-molekul secara acak. Pada simulasi MC dengan algoritma Metropolis, keseimbangan termal dapat dihubungkan dengan keadaan stasioner rantai Markov ketika mencapai keseimbangan termal maka didapatkan hasil untuk 2 atom yaitu litium dan karbon maka pada langkah yang ke-10.000, nilai entropi dengan nilai  dan energi rata-rata adalah . Dengan penambahan atom oksigen maka entropi bernilai  dan energi rata-rata adalah . Dengan demikian terlihat bahwa ada kenaikan entropi dan energi rata-rata jika atom oksigen ditambahkan. Entropi yang didefinisikan sebagai ukuran ketidakteraturan atau keacakan sistem akan semakin meningkat jika atom ditambahkan begitu pula dengan energi rata-rata.
SPATIAL DISTRIBUTION AND SOURCE IDENTIFICATION OF HEAVY METAL POLLUTION IN URBAN RIVER SEDIMENTS: A CASE STUDY FROM THE ACAI RIVER, JAYAPURA, PAPUA Bungasalu, Benny Abraham; Anou, Kezia Noviani; Sinaga, Ego Srivajawaty; Ngaderman, Hubertus; Martina Bunga; Maikson Molama
BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan) Vol. 12 No. 1 (2025): Biolink August
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/biolink.v12i1.15640

Abstract

The Acai River is a river that flows through densely populated areas, from households and salons to small industries such as tofu and tempeh factories. The community's waste disposal into the river pollutes the river. Studies and monitoring of river quality, especially in Indonesia, are still dominated by examining pollutant levels in river water. However, sediment is also important for in-depth study. This study aims to examine the spatial distribution of heavy metals in sediments in the Acai River located in the urban area of Jayapura, Papua Province. Sediment samples were taken from five locations representing areas with different anthropogenic activities, such as dense settlements, home industries, and small business areas. Then, the samples were dried by placing them in an oven at 100°C. Laboratory analysis was conducted to determine heavy metal levels using the XRF (X-ray Fluorescence) method. Results showed the highest Zn concentration reached 102.1 ppm in the downstream location, while Cr and Ni also showed significant accumulation at certain points. The distribution of heavy metal levels did not show a linear pattern along the river flow, indicating local contributions from human activities. These findings confirm that heavy metal pollution in urban rivers is more influenced by local inputs than by the river flow itself.
Co-Authors Anou, Kezia Anou, Kezia N. Anou, Kezia Noviani Bangkit Sudrajad Benny Abraham Bungasalu Bunga', Martina Daniel Napitupulu Daniel Napitupulu Ego Srivajawati Sinaga Ego Sriwijayaty sriwijayati Eva Papilaya Flinn C Radjabaycolle Kezia Noviani Anou Kezia Noviani Anou Kurni, Yoseph Nelson Maikson Molama Martina Bunga Muzzaki, Fauzan Afraa Napitupulu, Daniel Noper Tulak Payage, Yohanis Rahman Rahman Rahman Rahman S, Ego Srivajawaty Saputrina, Truly Theresia Sinaga, Novianti Sutarman, Tatang Tabuni, Wani Truly Theresia Saputrina Yulia Fitri Yulia Fitri Zakaria Victor Kareth