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All Journal JURNAL FISIKA Jukung (Jurnal Teknik Lingkungan) KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Indonesian Physical Review Kappa Journal Jurnal Pengabdian Masyarakat Sains Indonesia (Indonesian Journal Of Science Community Services)
Kurniawidi, Dian Wijaya
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Agriculture, Biological Sciences & Forestry Astronomy Chemistry Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Education Engineering Environmental Science Library & Information Science Physics Public Health Social Sciences Other

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Penerapan Algoritma Kuantum Variational Quantum Eigensolver (VQE) untuk Menentukan Energi Keadaan Dasar Dimer Helium Andelita, Nanik; Sudiarta, I Wayan; Kurniawidi, Dian Wijaya
Jurnal Fisika Vol 11, No 2 (2021)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jf.v11i2.30192

Abstract

Perkembangan teknologi informasi, komputasi dan ilmu fisika, khususnya fisika kuantum, diharapkan dapat melahirkan teknologi baru yang berguna untuk mewujudkan komputer kuantum sebagai komputer masa depan. Pada penelitian ini, algoritma kuantum telah diterapkan Variational Quantum Eigensolver (VQE) untuk menghitung energi keadaan dasar molekul dimer helium (He2). Komputasi menggunakan algoritma kuantum VQE dikerjakan dalam bahasa pemrograman Python dengan modul Qiskit. Untuk memastikan program algoritma kuantum VQE telah bekerja dengan baik pada sistem molekul, validasi program  dilakukan terlebih dahulu untuk kasus molekul hidrogen ( ). Hasil validasi program pada molekul  menunjukkan hasil yang sesuai dengan metode diagonalisasi dan literatur. Energi keadaan dasar molekul He2 yang diperoleh dengan metode algoritma VQE yaitu sebesar −5,74032590  pada jarak equilibrium 2,3 Å
Design and Development of A Portable Conductivity-Based Salinity Measurement System for Coastal Well Water Azhari, Mohammad Rasyidi; Hudha, Lalu Sahrul; Kurniawidi, Dian Wijaya
KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Vol 9 No 01 (2024): KONSTAN (Jurnal Fisika dan Pendidikan Fisika)
Publisher : Universitas Islam Negeri (UIN) Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/konstan.v9i01.516

Abstract

Seawater intrusion increases groundwater salinity and affects the quality of residents' healthy water around coastal areas. Therefore, simple mapping of seawater intrusion distribution based on the salinity values of healthy water around coastal areas is necessary. This mapping can be done by measuring the salinity of the water using a portable and real-time instrument. The existing measurement system is not resistant to corrosion, does not have a data logger system, and does not have a display system capable of showing real-time salinity value graphs. In this study, a portable salinity measurement system resistant to corrosion caused by high salt levels was developed. The salinity measurement method used is the conductivity method. The salinity value of the solution is proportional to the measured conductivity value of the solution. Conductivity measurement uses two electrodes connected to a voltage divider circuit with an AC power source to avoid electrode polarization and electrochemical reactions. The output voltage of this voltage divider circuit is proportional to the conductivity value of the solution in which the two electrodes are immersed, based on Ohm's law. This output voltage is fed into a signal conditioning circuit consisting of an amplifier, filter, and full-wave rectifier. Subsequently, an Atmega 328 microcontroller processes this data for real-time display on a TFT LCD and real-time storage on a data logger module. Testing and calibration are then carried out to obtain the relationship between the solution's salinity value and the measured output voltage, expressed as a 2nd-order polynomial function Vout = -0.0012C2 + 3.5126C + 14.194. Additionally, it is known that salinity measurement results using the conductivity method are influenced by temperature, so temperature measurement using the DS18B20 sensor is required to obtain a compensation factor due to temperature changes. The higher the temperature, the higher the measured salinity value for the exact solution measurement.
SINTESIS PEROVSKITE (CaTiO3) DARI LIMBAH CANGKANG KERANG MUTIARA (Pinctada maxima): SOLUSI RAMAH LINGKUNGAN UNTUK TEKNOLOGI SEMIKONDUKTOR Budianto, Arif; Rubi'ah, Siti; Kurniawidi, Dian Wijaya; Alaydrus, Alfina Taurida; Rahayu, Susi
Jukung (Jurnal Teknik Lingkungan) Vol 11, No 1 (2025)
Publisher : Program Studi Teknik Lingkungan Fakultas Teknik Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jukung.v11i1.22220

Abstract

Pengelolaan limbah Cangkang Kerang Mutiara (Pinctada maxima) sebagai bahan baku ramah lingkungan dalam pengembangan teknologi semikonduktor perovskite CaTiO₃. Penelitian ini bertujuan untuk mengidentifikasi sifat listrik CaTiO3 berdasarkan parameter konduktivitas listrik dan band gap. Sintesis dilakukan menggunakan metode kopresipitasi dengan variasi suhu kalsinasi. Karakterisasi material CaTiO3menggunakan FTIR, Spektrofotometer UV-Vis, dan Zeta Potential Analyzer. Karakteristik gugus fungsi menunjukkan telah terbentuk fase perovskite pada rentang puncak yang sama. Nilai konduktivitas listrik tertinggi dan band gap terkecil diperoleh pada suhu 1100°C, yaitu 2,96×10⁻² S/m dan 2,96 eV. Berdasarkan parameter tersebut, CaTiO3 yang dihasilkan tergolong dalam kategori semikonduktor. Dengan demikian, material ini memiliki potensi untuk aplikasi dalam bidang elektronik dan energi. Hasil ini memperkuat urgensi pemanfaatan material berbasis limbah Pinctada maxima sebagai bahan baku ramah lingkungan dalam pengembangan teknologi, terutama yang berhubungan dengan teknologi semikonduktor.
Identification of Lightweight Concrete Characteristics Based on Density, Compressive Strength, and Absorbency Values with the Addition of Fly Ash and Glass Waste Aggregates Putraji, Lalu M. Guguh; Kurniawidi, Dian Wijaya; Hudha, Lalu Sahrul
KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Vol 10 No 01 (2025): KONSTAN (Jurnal Fisika dan Pendidikan Fisika)
Publisher : Universitas Islam Negeri (UIN) Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/konstan.v10i01.723

Abstract

Fly ash and glass waste can pose a significant environmental problem, as they cannot naturally decompose in the environment. This occurs due to the presence of pozzolan and silica in the waste. The purpose of this study is to categorize lightweight concrete and evaluate its properties, including density, compressive strength, and water absorption when incorporating additional fly ash and glass waste. This research uses experimental methods in the laboratory with a total of 72 samples with dimensions (25x25x50) mm in the form of blocks. Concrete samples were divided into two variations of storage duration, namely 21 days and 28 days, and given the same treatment and testing. The fly ash mixture variations used in this study were 0%, 20%, 40%, and 60%, with each variation consisting of 3 samples. The results obtained in this study indicate that, when viewed in terms of age, concrete with a storage period of 28 days exhibits better quality than concrete with a 21-day storage period. Based on the density value, both 21-day-old and 28-day-old concrete samples fall within the quality category of lightweight concrete, as per category A. When viewed from the compressive strength value, 21-day-old and 28-day-old concrete are of C quality. Regarding water absorption, the best value is achieved by the concrete mix with a 20% fly ash content and an 11% water absorption rate. When compared with concrete samples that do not contain fly ash, it is known that the test results on concrete samples without fly ash (0%) have higher compressive strength and density values, and the percentage of water absorption is by SNI standards.
Simulasi Sekolah Aman Bencana di SMKN 1 Kuripan Sebagai Upaya Pengurangan Resiko Bencana di Sekolah Syamsuddin, Syamsuddin; Alaa, Siti; Ahyana, Ridho; Kurniawidi, Dian Wijaya; Ayub, Syahrial; Zuhdi, Muhammad
Jurnal Pengabdian Masyarakat Sains Indonesia (Indonesian Journal Of Science Community Services) Vol. 4 No. (1) (2022)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmsi.v4i(1).175

Abstract

Untuk mengurangi resiko bencana di Indonesia perlu dilakukan strategi yang efektif dan terpadu. Salah satu metode yang paling efektif adalah dengan membentuk sekolah aman bencana. Telah dilakukan simulasi bencana di SMKN 1 Kuripan sebagai bentuk edukasi agar dapat meminimalisir korban ketika bencana terjadi. Pengabdian dilaksanakan dengan metode ceramah, diskusi dan simulasi yang dibantu oleh Tim BPBD Provinsi NTB, Pramuka, dan PMI. Kegiatan pengabdian berjalan sukses dan diakhir kegiatan terbentuk Tim Siaga Sekolah. Kata kunci: Sekolah aman bencana, BPBD, simulasi
EKSTRAK GETAH PEPAYA (Carica Papaya) DENGAN PENAMBAHAN Cu SEBAGAI DYE SENSITIZER SOLAR CELL (DSSC) Kurniawidi, Dian Wijaya; Alaa, Siti; Rahayu, Susi
Indonesian Physical Review Vol. 1 No. 1 (2018)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (485.082 KB) | DOI: 10.29303/ipr.v1i1.5

Abstract

Indonesia is a biodiversity country. Abundance of biological resources may encourage researchers to optimize its use. As an example papaya trees are utilized as raw material for thin films. Sap of papaya latex is doppinged with Cu. This composition is depositioned on top of FTO by spin coating method. The addition of Cu dopping aims to control the rate of crystallinity of the material. This research will add Cu between 10% and 50% solution. Based on FTIR test results, flavonoid compounds might be obtained with O-H group, some aromatic rings C = C and C = O, aliphatic compounds C-H and -CO. Flavonoid compounds are potentially utilized as dye for DSSC. The thickness of dye produced by doping Cu 10% is approximately (0.5-2) μm. Furthermore, dopping Cu from 20% to 40% can produce thickness around 10-50 nm. Meanwhile, the results of the XRD test show an effective Cu between 10% to 40%.
IDENTIFIKASI SIFAT FISIS KANDIDAT WAFER DARI LIMBAH TAHU SEBAGAI ALTERNATIF PAKAN TERNAK Rahayu, Susi; Nurhidayati, Nurhidayati; Kurniawidi, Dian Wijaya; Alaa, Siti
Indonesian Physical Review Vol. 4 No. 1 (2021)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v4i1.72

Abstract

Inovasi pembuatan pakan ternak dalam sediaan wafer perlu dilakukan untuk menjadi alternatif pakan saat musim kemarau. Limbah tahu merupakan salah satu bahan dasar yang dimanfaatkan sebagai bahan pembuatan wafer. Tujuan penelitian ini untuk mengidentifikasi perlakuan yang direkomendasikan dalam pembuatan kandidat wafer berdasarkan karakteristik fisis wafer. Kandidat wafer ditinjau berdasarkan warna, kadar air, densitas wafer, densitas partikel, dan porositas.  Proses pembuatan wafer dilakukan dengan proses pemadatan dan pemanasan. Sebelum serbuk limbah tahu dicetak, dipastikan dahulu kadar air pada serbuk limbah tahu sesuai dengan stadar SNI 3148:2:200. Suhu pemanasan serbuk limbah tahu yang direkomendasikan menggunakan suhu 100oC. Karakteristik serbuk limbah tahu yang dihasilkan yaitu serbuk berwarna putih, kadar air sebesar 14,1% dengan nilai densitas partikel serbuk limbah tahu(𝜌sa ) 0,189g/cm3 serta porositas (𝜙sa ) 0,216%. Sedangkan untuk proses pencetakan wafer, suhu pemanasan yang direkomendasikan yaitu 70oC. Kandidat wafer yang diperoleh menghasilkan warna putih, tahan hingga 4 minggu, kadar air 7,19%, densitas partikel (𝜌p ) 0,254 g/cm3, densitas wafer 1,10 g/cm3 dan porositas 𝜙w sebesar 3,47±0,0118%. 
Efektivitas Jumlah Lubang Pada Tabung Pembakaran Terhadap Performa Kompor Biomassa Rahayu, Susi; Ridwansyah, Habib; Kurniawidi, Dian Wijaya; Handayana, I G N Yudi; Alaa`, Siti; Budianto, Arif
Kappa Journal Vol 8 No 1 (2024): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i1.25335

Abstract

Global energy requirements encourage innovations in developing environmentally friendly alternative energy sources by transforming biomass waste into biopellets. The use of biopellets as fuel was followed by the development of biomass stoves for households. Developing biomass stove technology design is essential, so this research aims to design a biomass stove with good performance for use as a household stove. Stove performance was identified by reviewing the biomass stove's fuel consumption and thermal efficiency relative to the number of combustion holes. The biomass stove fabrication results had been successfully created based on a stove design using galvanized plate material. The design focused on three layers of tubes, including the stove frame, the air supply control, and the combustion tube. The number of holes in the combustion tube affected fuel consumption and the thermal effectiveness of the stove. The lowest fuel consumption on a furnace with six combustion holes was 2,306 kg/hour. Meanwhile, the optimal thermal efficiency for burning 18 holes was 16.17%. However, this thermal efficiency value needs to meet the SNI 7926: 2013 standard. The location and number of combustion holes in the combustion tube could influence the performance of the biomass stove. Therefore, it is important to modify biomass stoves to fulfill SNI standards.
Co-Authors Ahyana, Ridho Alaa, Siti Alaa`, Siti Alfina Taurida Alaydrus Andelita, Nanik Arif Budianto Azhari, Mohammad Rasyidi Handayana, I G N Yudi I Wayan Sudiarta Lalu Sahrul Hudha Muhammad Zuhdi Nurhidayati Nurhidayati Putraji, Lalu M. Guguh Ridwansyah, Habib Rubi'ah, Siti Susi Rahayu Syahrial Ayub, Syahrial Syamsuddin Syamsuddin