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All Journal Jurnal technoscientia Jurnal Penelitian Pendidikan IPA (JPPIPA) JURNAL PENDIDIKAN TAMBUSAI Dielektrika : Jurnal Ilmiah Kajian Teori dan Aplikasi Teknik Elektro JURNAL TEKNOLOGI TECHNOSCIENTIA Unram Journal of Community Service (UJCS) Jurnal Pepadu Inovasi Gagasan Abdimas & Kuliah Kerja Nyata
Teti Zubaidah
Jurusan Teknik Elektro Universitas Mataram
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PENERAPAN METODE VERY LOW FREQUENCY (VLF) PADA LOKASI ANOMALI GEOMAGNETIK RENDAH Kanata, Bulkis; Zubaidah, Teti; Susanto, Oki Prio
JURNAL TEKNOLOGI TECHNOSCIENTIA Academia Ista Vol 12 No 02 Februari 2008
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (291.175 KB) | DOI: 10.34151/technoscientia.v0i0.2006

Abstract

The research with title Evaluation of measurement result of geomagnetic anomaly in lombok island, west nusa tenggara and analysis of it’s relation with gravitation anomaly and prediction of local geology (Zubaidah, 2005) in area about 25 x 30 km2 result a isogam map, which known that the minimum geomagnetic anomaly equal to 558,194413 nT located in Seganteng, West Lombok (08035’46,2” LS, 116008’10,9” BT).Very Low Frequency Method is one of Geophysics methods that use magnetic com-ponent of electromagnetics field wich is caused by radio broadcaster use Frequency 15-30 kHz. VLF Method applied to know characteristic around the minimum geomagnetic anomaly in the form result of current density image which able to show conductive or it’s not an measurement area.This VLF Acquisition conducted to know the zona of conductive layer as long as 2500 metres from south to north pass the minimum geomagnetic anomaly. The tilt data processing is done use Moving Average method and Linear filter with use Matlab 6.1 . The Result of data processing show the contour of current density with depth/space = 8 or maximum deep is 160 metres with conductive area is spread near the minimum geomagnetic anomaly which is estimated much water
PENERAPAN METODE VERY LOW FREQUENCY (VLF) PADA LOKASI ANOMALI GEOMAGNETIK RENDAH Kanata, Bulkis; Zubaidah, Teti; Susanto, Oki Prio
JURNAL TEKNOLOGI TECHNOSCIENTIA Academia Ista Vol 12 No 02 Februari 2008
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v0i0.2006

Abstract

The research with title Evaluation of measurement result of geomagnetic anomaly in lombok island, west nusa tenggara and analysis of it’s relation with gravitation anomaly and prediction of local geology (Zubaidah, 2005) in area about 25 x 30 km2 result a isogam map, which known that the minimum geomagnetic anomaly equal to 558,194413 nT located in Seganteng, West Lombok (08035’46,2” LS, 116008’10,9” BT).Very Low Frequency Method is one of Geophysics methods that use magnetic com-ponent of electromagnetics field wich is caused by radio broadcaster use Frequency 15-30 kHz. VLF Method applied to know characteristic around the minimum geomagnetic anomaly in the form result of current density image which able to show conductive or it’s not an measurement area.This VLF Acquisition conducted to know the zona of conductive layer as long as 2500 metres from south to north pass the minimum geomagnetic anomaly. The tilt data processing is done use Moving Average method and Linear filter with use Matlab 6.1 . The Result of data processing show the contour of current density with depth/space = 8 or maximum deep is 160 metres with conductive area is spread near the minimum geomagnetic anomaly which is estimated much water
ANFIS-based MPPT Controller Design on Boost Converter to Improve Photovoltaic System Performance Nrartha, I Made Ari; Alfian, Muhammad Rolan; Zubaidah, Teti
DIELEKTRIKA Vol 9 No 2 (2022): DIELEKTRIKA
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dielektrika.v9i2.310

Abstract

The efficiency of the photovoltaic system is very low ranging from 9-17% in areas with low irradiation while the investment costs are quite high. In addition, the power output of the photovoltaic system is highly volatile due to changes in irradiation due to weather and cloud movement, and temperature change. This research proposes the MPPT method based on ANFIS in the photovoltaic system for transient behavior analysis and system efficiency improvement. The results of the proposed method were compared with the MPPT Perthub & Observe (P&O) method. Each MPPT method was applied to a boost converter connected to a photovoltaic module with a capacity of 150 Wp to adjust the duty cycle using Simulink simulation in MATLAB. The irradiation and temperature data for 3 consecutive days were from Saturday to Monday, September 4 to 6, 2021. The simulation results show that the transient time of ANFIS MPPT is 6.23 times faster than that of P&O MPPT. The efficiency of ANFIS-based MPPT is higher than MPPT P&O. At 917.3 W/m2 of irradiation, the output power of the boost converters are 132.09, and 111.69 Watt for the ANFIS-based MPPT controller, and the P&O method MPPT, respectively.
Simulasi Mitigasi Bencana Alam Gempa Bumi Di Kecamatan Pujut – Lombok Tengah Kosim; Zubaidah, Teti; Muhajirah; Sulistiyono, Heri; Muazar Habibi, MA
Jurnal Igakerta Vol. 1 No. 1 (2024): Jurnal Inovasi Gagasan Abdimas dan Kuliah Kerja Nyata
Publisher : IGAKERTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70234/02e2w231

Abstract

Wilayah Nusa Tenggara Barat, terutama Pulau Lombok dan bagian barat Pulau Sumbawa, sangat rentan terhadap gempa bumi, seperti yang terlihat pada gempa besar tahun 2018. Oleh karena itu, mitigasi bencana sangat penting untuk mengurangi risiko. Program pengabdian masyarakat ini bertujuan untuk meningkatkan pengetahuan dan keterampilan mitigasi bencana di Kecamatan Pujut melalui pembelajaran di kelas dan simulasi evakuasi. Evaluasi dilakukan dengan angket untuk menilai pengetahuan dan kesadaran peserta tentang gempa dan mitigasinya, yang dikategorikan menjadi sangat baik, baik, cukup, dan rendah. Hasil analisis menunjukkan 87,5% peserta memiliki kesadaran baik hingga sangat baik, dengan rincian: sangat baik (9 orang), baik (12 orang), cukup (1 orang), dan rendah (2 orang). Ini menunjukkan bahwa masyarakat Pujut, termasuk aparat desa, staf kesehatan, dan tim SAR, memiliki kesadaran tinggi terhadap mitigasi gempa, penting untuk mengurangi dampak di masa depan.
PROGRAM PEMENUHAN ENERGI DI RUMAH QUR’AN SEMBALUN DESA SEMBALUN BUMBUNG, KECAMATAN SEMBALUN, KABUPATEN LOMBOK TIMUR Yadnya, Made Sutha; Ramadhani, Cipta; Zubaidah, Teti; Kanata, Bulkis; Rosmaliati, Rosmaliati
Jurnal Pepadu Vol 6 No 1 (2025): Jurnal Pepadu
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/pepadu.v6i1.6977

Abstract

Sembalun Bumbung Village, East Lombok, faces the problem of river pollution due to the disposal of livestock manure and garbage, which on the other hand has great potential to be processed into biogas as an economical, environmentally friendly, and sustainable alternative energy. This program aims to design and implement a biogas system at Rumah Qur'an At-Tazkiyyah Sembalun, a boarding school that is also a center for community empowerment, to meet energy needs while reducing environmental pollution. The methods used include training and assistance to students and the community about biogas processing, starting from organic waste fermentation, the use of fermented gas for cooking and electricity, to the use of residual waste as organic fertilizer, as well as education on livestock care and waste management to support the sustainability of the program. Expected outputs include the production of renewable energy in the form of biogas for cooking and electricity, reduction of waste that pollutes the environment, increasing public awareness about waste management, and creating a cleaner and healthier environment. Keyword : livestock manure; garbage; energy; biogas; organic fertilizer
Utilization of Biogas Energy for Pasteurization in Sembalun Mushroom Initiative Zubaidah, Teti; Rosmaliati; Rokhmat, Joni; Muntari; Niseng, Zakee; Nurcahaya; Saputra, Ramdani; Akbar, Lalu Muhamad Roviq; Gunada, I Wayan; Hidayat, X Zardht Alex
Unram Journal of Community Service Vol. 6 No. 3 (2025): September
Publisher : Pascasarjana Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ujcs.v6i3.1174

Abstract

The Sembalun Mushroom Initiative aims to strengthen food security and resilience to disasters in Sembalun Bumbung and circumstance villages through the utilization of biogas energy for the pasteurization process of mushrooms. These areas are prone to disasters, making the supply of food and sustainable energy a major challenge. The project utilizes cow dung waste as an environmentally friendly biogas source to support pasteurization and mushroom cultivation. Traditionally, mushroom pasteurization processes still use firewood, which triggers deforestation, high carbon emissions, and health risks from smoke. The community service team from the University of Mataram has developed biogas technology as an alternative solution. The biogas installation at the At-Tazkiyah Islamic Boarding School was completed in May 2024 and began operating in July 2024, thereafter a mushroom house has been built for mushroom cultivation in early 2025. During this community service project, a gas pasteurization system is installed and used for pasteurization, followed by training and capacity building for the community in utilizing green energy sources. The aim is to introduce a transition to environmentally friendly technologies, as well as to support innovation, sustainability, and community engagement. The activities are an international collaboration between the Postgraduate Program and the Faculty of Engineering at University of Mataram and the Fatoni University in Thailand. It is expected to expand Unram's international exposure and strengthen cooperation between countries.
Peningkatan Hasil Belajar IPA dengan Menggunakan Model Kooperatif Tipe Snowball Throwing Siswa Sekolah Dasar Zubaidah, Teti; Masrul, Masrul; Witarsa, Ramdhan
Jurnal Pendidikan Tambusai Vol. 6 No. 1 (2022): 2022
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v6i1.5578

Abstract

Penelitian ini dilakukan bertolak dari masih banyaknya siswa yang belum mencapai ketuntasan hasil belajar IPA dengan jumlah siswa yang tidak tuntas 20 siswa (57,14%). Sedangkan siswa yang tuntas hanya berjumlah 15 siswa (42,86%). Tujuan penelitian ini adalah untuk memperoleh paparan yang jelas, rinci, dan mendalam tentang perencanaan dan pelaksanaan pembelajaran materi kenampakan bumi dan benda langit dengan model pembelajaran Snowball Throwing di kelas IV SDN 013 Tanjung Berulak, dan hasil belajar siswa dikelas IV SDN 013 Tanjung Berulak setelah mengikuti pembelajaran kenampakan bumi dan benda langit dengan model pembelajaran Snowball Throwing. Penelitian Tindakan kelas ini dilaksanakan di kelas IV SDN 013 Tanjung Berulak. Subjek dalam penelitian ini adalah guru, pengamat, dan siswa kelas IV SDN 010 Sawah Kampar Utara yang berjumlah 35 orang siswa, yang terdiri dari 15 orang laki-laki, dan 20 orang perempuan. Teknik pengumpulan data yang digunakan dalam penelitian ini adalah Teknik observasi, tes, dan dokumentasi. Berdasarkan hasil penelitian dapat disimpulkan bahwa Pada sebelum Tindakan siswa yang tuntas hanya 15 orang siswa atau 42,86%. Sedangkan pada siklus I meningkat menjadi 19 orang siswa atau 54,29%. Pada siklus II meningkat lagi hingga mencapai 35 orang siswa atau dengan persentase 100%. Dengan demikian keberhasilan siswa pada siklus II telah melebihi 75%. Hasil belajar siswa dapat ditingkatkan dengan menggunakan model kooperatif tipe Snowball Throwing.
Penerapan Model Pembelajaran Kooperatif Tipe Student Team Achievement Division (STAD) pada Materi Bunyi Fauriza, Siti; Sumarni, Sumarni; Supeno, Supeno; Zubaidah, Teti; Satriyo, Wiwid; Azmi, Zul; Setyono, Tuhu; Yulianti, Defitri
Jurnal Pendidikan Tambusai Vol. 6 No. 1 (2022): 2022
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v6i1.5662

Abstract

Kajian ini berawal dari kenyataan bahwa banyak siswa kelas IV SD Pahlawan yang memahami sulitnya peran dalam pelajaran IPA materi bunyi. Hal ini disebabkan guru tidak memberikan pelajaran IPA secara realistik sesuai dengan situasi konkrit siswa. Salah satu solusi untuk mengatasinya adalah dengan menggunakan model pembelajaran kooperatif tipe STAD. STAD merupakan salah satu model pembelajaran IPA. Dengan demikian, tujuan penelitian ini adalah untuk mendeskripsikan hasil belajar siswa kelas IV pada materi bunyi dengan model pembelajaran Cooperative Learning STAD. Penelitian ini menggunakan pendekatan kualitatif dan kuantitatif dengan bentuk penelitian adalah penelitian tindakan kelas. Penelitian ini dilakukan sebanyak dua siklus dan setiap siklus bertemu. Penelitian dilakukan di SD Pahlawan dengan subjek penelitian kelas IV. Pengumpulan data dalam penelitian menggunakan observasi, dokumentasi dan tes. Data dianalisis dengan menggunakan analisis data kualitatif yang disajikan oleh mahasiswa Mike & Huberman pada materi pembelajaran IPA bunyi. Peningkatan hasil belajar siswa pada Pembelajaran Kooperatif STAD pada setiap siklus dapat dilihat rata-rata 62,59 dengan persentase ketuntasan belajar 68% pada siklus I dan nilai rata-rata 65,25% dengan persentase ketuntasan belajar 88% pada siklus II. Jadi, materi pembelajaran bunyi dengan model pembelajaran kooperatif tipe STAD dapat meningkatkan hasil belajar siswa kelas IV.
PROGRAM PEMENUHAN ENERGI DI RUMAH QUR’AN SEMBALUN DESA SEMBALUN BUMBUNG, KECAMATAN SEMBALUN, KABUPATEN LOMBOK TIMUR Yadnya, Made Sutha; Ramadhani, Cipta; Zubaidah, Teti; Kanata, Bulkis; Rosmaliati, Rosmaliati
Jurnal Pepadu Vol 6 No 1 (2025): Jurnal Pepadu
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/pepadu.v6i1.6977

Abstract

Sembalun Bumbung Village, East Lombok, faces the problem of river pollution due to the disposal of livestock manure and garbage, which on the other hand has great potential to be processed into biogas as an economical, environmentally friendly, and sustainable alternative energy. This program aims to design and implement a biogas system at Rumah Qur'an At-Tazkiyyah Sembalun, a boarding school that is also a center for community empowerment, to meet energy needs while reducing environmental pollution. The methods used include training and assistance to students and the community about biogas processing, starting from organic waste fermentation, the use of fermented gas for cooking and electricity, to the use of residual waste as organic fertilizer, as well as education on livestock care and waste management to support the sustainability of the program. Expected outputs include the production of renewable energy in the form of biogas for cooking and electricity, reduction of waste that pollutes the environment, increasing public awareness about waste management, and creating a cleaner and healthier environment. Keyword : livestock manure; garbage; energy; biogas; organic fertilizer
Unraveling the Seismic Signal Anomaly at Mount Rinjani Station: In-Depth Exploration with the Detrended Fluctuation (DFA) Analysis Method in Connection with the 2018 Big Earthquake on Lombok Island, West Nusa Tenggara Kanata, Bulkis; Rosmaliati; Zubaidah, Teti; Yadnya, Made Sutha; Zainuddin, Abdullah; Ratnasari, Dwi; Fitratunnisa, Nur; Akbar, Muhammad Fajrin
Jurnal Penelitian Pendidikan IPA Vol 10 No 1 (2024): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i1.6263

Abstract

We analyzed the seismic signals of the Mount Rinjani station to identify possible seismic anomalies before a series of major earthquakes on Lombok Island in 2018. We observe anomalies before earthquake events Mw >= 5.90. This research applies the detrended fluctuation analysis (DFA) method to investigate possible earthquake precursors associated with the analyzed earthquake. The results showed a relationship between scaling seismic signals (α) that exceeds the threshold of α values during the analysis period, and there is a deviation of the root mean square fluctuations in the corresponding scaling that should be rising but constant. The value of α with constant root mean square fluctuations occurs one to three days before the preliminary earthquake Mw 6.40 (28/07/2018) UTC and eight to 10 days before the main earthquake Mw 6.90 (05/08/2018). The Mw 6.90 earthquake had the most magnitude and could significantly contribute to the appearance of seismic anomalies.
Co-Authors Akbar, Lalu Muhamad Roviq Akbar, Muhammad Fajrin Alfian, Muhammad Rolan Azmi, Zul Budi Irmawati Bulkis Kanata Cipta Ramadhani Dwi Ratnasari Fauriza, Siti Fitratunnisa, Nur Giri Wahyu Wiriasto Heri Sulistiyono, Heri Hidayat, X Zardht Alex I Made Ari Nrartha I Wayan Gunada Indira Puteri Kinasih Joni Rokhmat Kosim M.A. Muazar Habibi Made Sutha Yadnya Masrul Muhajirah Muntari Muntari Niseng, Zakee Nurcahaya Paniran Paniran Ramdhan Witarsa Rosmaliati Rosmaliati, Rosmaliati Saputra, Ramdani Satriyo, Wiwid Setyono, Tuhu Sumarni Sumarni Supeno Susanto, Oki Prio Yulianti, Defitri Zainuddin, Abdullah