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All Journal Jurnal Aplikasi Fisika INDONESIAN JOURNAL OF APPLIED PHYSICS Spektra: Jurnal Fisika dan Aplikasinya Indonesian Journal of Chemistry JPPM (Jurnal Pengabdian dan Pemberdayaan Masyarakat) JAGAT (Jurnal Geografi Aplikasi dan Teknologi) Jurnal Pengabdian UNDIKMA Indonesian Journal of Animal Agricultural Science (IJAAS) Jurnal Material dan Energi Indonesia Jurnal Pengabdian Kepada Masyarakat (JAPIMAS) Jurnal Aplikasi Fisika

IDA USMAN

1Program Studi Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Halu Oleo, Jl. Prof. HEA Mokodompit No. 1, Kendari, 93232

Author-ID : 3239171

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KAJIAN PENGARUH VARIASI JUMLAH LAPISAN TRANSPARAN TiO2 TERHADAP PERFORMA KERJA SEL SURYA YANG DISENSITISASI DENGAN DYE (DSSC) Ida Usman; Purwo Adi Setyo; Waode Sukmawati Arsyad
Jurnal Aplikasi Fisika Vol 13, No 2 (2017): JURNAL APLIKASI FISIKA
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (427.32 KB)

A study of the effect of variations on the number of transparent TiO2 layers on dye-sensitized dye (DSSC) solar cell performance has been conducted. This study aims to make DSSC solar cell with transparent amount of transparent TiO2 transparent layer and characterize its working function by measuring the photovoltaic characteristics. From the results of the research, the Jsc value obtained increases with the increase in the number of layers for the case of cells A and B cells, this is probably related to the increasing number of dye that binds to TiO2 with increasing cell thickness, thus increasing the amount of light absorbed by dye . However, when the thickness of the TiO2 layer is added (cells C and D) the Jsc value actually decreases. A DSSC A cell with a layer of transparent TiO2 layer of 1 layer shows the largest open circuit voltage value of 0.7V, while DSSC B cells show the highest current density value of 2.07mA / cm2, and the highest fill factor (FF) is indicated by Sample D. The results of this study there are many factors that limit the effesiensi DSSC solar cellsKeywords: DSSC, TiO2 Transparent, Number of Layers, Performance

Edukasi Masyarakat Desa Kafoofoo di Kabupaten Muna Tentang Pencegahan Covid-19 Ida Usman; Mukhsar Mukhsar; Bahriddin Abapihi; Asrul Sani; Wa Ode Sunaria; Baharuddin Said
JPPM (Jurnal Pengabdian dan Pemberdayaan Masyarakat) VOL. 5 NOMOR 1 MARET 2021 JPPM (Jurnal Pengabdian dan Pemberdayaan Masyarakat)
Publisher : Lembaga Publikasi Ilmiah dan Penerbitan (LPIP)

COVID-19 adalah penyakit menular yang dapat menginfeksi banyak orang apabila tidak menerapkan protokol kesehatan yang ditetapkan oleh pemerintah. Penyakit ini telah menyebar dengan cepat ke berbagai daerah termasuk ke desa-desa. Kegiatan pengabdian ini bertujuan mengedukasi masyarakat Desa Kafoofoo Kabupaten Muna dalam pencegahan penyebaran COVID-19. Tahapan pengabdian meliputi: pembekalan tim pelaksana, koordinasi dengan aparat desa, pengukuran tingkat pengetahuan masyarakat, dan edukasi pencegahan penyebaran COVID-19 melalui poster, alat peraga, dan penyuluhan kepada perwakilan warga. Hasil kegiatan edukasi menunjukkan bahwa tingkat pengetahuan masyarakat terhadap COVID-19 telah meningkat, yang ditandai dengan meningkatnya penggunaan masker di luar rumah.

Effects of Surface Diffuseness and Coupling Radius Parameters on The Fusion and Quasi-Elastic Barrier Distributions Viska Inda Variani; Ida Usman; Muhammad Zamrun Firihu
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 9, No 01 (2019): April
Publisher : Department of Physics, Sebelas Maret University

We study the heavy-ion reaction at sub-barrier energies for 16O+144,154Smsystems using full order coupled-channels formalism. We especially investigate the effect of fusion and quasi- elastic barrier distributions on the surface diffuseness and the coupling radius parameters of the nuclear potential for these systems. We found that the structure of fusion and quasi-elastic barrier distributions is more sensitive to the surface diffuseness and coupling radius parameters for the reaction with spherical target, 16O+144Sm systemcompared to the reaction that involves the deformed target, i.e., 16O+154Sm system. In more detail, the results of coupled-channels calculations for the fusion and the quasi-elastic barrier distributions for deformed target are not sensitive to the choice of the coupling radius and surface diffuseness parameters. In mark contrast, the structure of the fusion and the quasi-elastic barrier distributions for spherical target are very sensitive to the coupling radius and surface diffuseness parameters. We found that the small surface diffuseness parameter smeared out the fusion barrier distributions and the larger coupling radius smoothed the high energy peak of the quasi-elastic barrier distributions. We also found that the larger coupling radius, , is required by the experimental quasi-elastic barrier distribution for the 16O+144Sm system whereas the experimental fusion barrier distribution compulsory the small value, i.e., .

THE EFFECT OF VARIATION CONCENTRATION AND DEPOSITION PARAMETER TO THE OPTICAL CHARACTERISTICS AND THE CRYSTALLITE PROPERTIES OF ZINC OXIDE Waode Sukmawati Arsyad; Ulpiani Ulpiani; Muh. Angga Anugerah; La Aba; Ida Usman
Spektra: Jurnal Fisika dan Aplikasinya Vol 7 No 1 (2022): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 7 Issue 1, April 2022
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/SPEKTRA.071.04

The objective of the study was to obtain the ZnO thin films with variation concentration of zinc acetate dehydrate (ZAD), and variation of spin coater speed and rotation time. We observed the effect of the former parameters on the optical characteristics that comprised of the spectrum of absorption, transmittance, and ZnO crystallite size from UV-Vis spectrometer and XRD orderly. For the analysis of the effect of the variation of concentration, ZAD diluted into ethanol with the concentration 0.1M, 0.25M, 0.5M, 0.75M and 1M, with the addition of diethanolamine (DEA). Then it was deposited on the glass substrate with spin coater, continued by the heating on the hotplate with the number of layer's variation. For the analysis of deposition parameter effect on the transmittance and the size of ZnO crystal, we used 0.25M ZnO precursor solution with the addition of DEA, then deposited by speed and time of rotation of spin coater of 1230 rpm, 2500 rpm, and 3200 rpm for 10, 15 and 30 seconds of each. The smallest absorbance value 0.05 obtained for single layer 0.1M ZnO, while the maximum transmittance value obtained for three-layer 0.25M ZnO. Concentration variation did not affect the energy gap, whose value was approximately 3.2 eV for all samples. From the XRD result, we found that deposition time affected the number of diffraction lines, the size of the crystallite, and the transmittance.

Virtual Screening of the Indonesian Medicinal Plant and Zinc Databases for Potential Inhibitors of the RNA-Dependent RNA Polymerase (RdRp) of 2019 Novel Coronavirus Muhammad Arba; Andry Nur-Hidayat; Ida Usman; Arry Yanuar; Setyanto Tri Wahyudi; Gilbert Fleischer; Dylan James Brunt; Chun Wu
Indonesian Journal of Chemistry Vol 20, No 6 (2020)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.56120

The novel coronavirus disease 19 (Covid-19) which is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been a pandemic across the world, which necessitate the need for the antiviral drug discovery. One of the potential protein targets for coronavirus treatment is RNA-dependent RNA polymerase. It is the key enzyme in the viral replication machinery, and it does not exist in human beings, therefore its targeting has been considered as a strategic approach. Here we describe the identification of potential hits from Indonesian Herbal and ZINC databases. The pharmacophore modeling was employed followed by molecular docking and dynamics simulation for 40 ns. 151 and 14480 hit molecules were retrieved from Indonesian herbal and ZINC databases, respectively. Three hits that were selected based on the structural analysis were stable during 40 ns, while binding energy prediction further implied that ZINC1529045114, ZINC169730811, and 9-Ribosyl-trans-zeatin had tighter binding affinities compared to Remdesivir. The ZINC169730811 had the strongest affinity toward RdRp compared to the other two hits including Remdesivir and its binding was corroborated by electrostatic, van der Waals, and nonpolar contribution for solvation energies. The present study offers three hits showing tighter binding to RdRp based on MM-PBSA binding energy prediction for further experimental verification.

KAJIAN PERSEBARAN DAN STRATEGI PENGEMBANGAN PARIWISATA DI KECAMATAN BATAUGA KABUPATEN BUTON SELATAN La Ode Andi Gusman; Sawaluddin Sawaluddin; Anita Indriasary; Alfirman Alfirman; Ida Usman
JAGAT (Jurnal Geografi Aplikasi dan Teknologi) Vol 6, No 2 (2022): JAGAT (Jurnal Geografi Aplikasi dan Teknologi)
Publisher : Halu Oleo University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/jagat.v6i2.28315

Abstrak: Pariwisata adalah berbagai macam kegiatan wisata yang didukung berbagai fasilitas serta layanan yang disediakan oleh masyarakat, pengusaha, dan pemerintah. Penelitian ini bertujuan untuk : (1) mendapatkan informasi persebaran objek wisata yang ada di Kecamatan Batauga Kabupaten Buton Selatan; (2) mengetahui kondisi objek wisata di Kecamatan Batauga Kabupaten Buton Selatan, dan (3) mengetahui strategi pengembangan pariwisata di Kecamatan Batauga Kabupaten Buton Selatan. Metode analisis yang digunakan pada penelitian ini adalah analisis pemetaan, analisis deskriptif, dan analisis SWOT. Hasil dari penelitian ini antara lain: (1) Kecamatan Batauga memiliki 8 objek wisata yang tersebar di 7 desa/kelurahan yaitu Lawela Selatan, Busoa, Laompo, Masiri, Majapahit, Bola dan Poogalampa; (2) Kondisi dan strategi pengembagan objek wisata di Kecamatan Batauga dijelaskan melalui salah satu objek wisata yaitu wisata permandian Kabura-burana: memiliki sarana prsarana seperti gazebo, masjid, kamarganti, dan warung. (3) Strategi pengembangan permandian Kabura-burana untuk strategi S-O adalah strategi pengembangan sebagai kawasan wisata alam, strategi pengembangan sumber air bersih, strategi pengembangan atraksi budaya. Strategi pengembangan untuk strategi W-O adalah strategi pengembangan sarana dan prasarana, dan strategi S-T adalah strategi pemanfaatan sumber daya alam, serta strategi W-T adalah strategi pengembangan pelestarian vegetasi. Kata Kunci: Kata kunci:Persebaran, kondisi, strategi pengembanganobjek wisata, BataugaAbstract: Tourism is a variety of tourism activities that is supported by various facilities and services provided by the community, businessmen, and government. This research aims to: (1) obtain information on the distribution of tourist objects in Batauga District, South Buton Regency; (2) know the condition of tourism objects in Batauga District, South Buton Regency, and (3) know the tourism development strategy in Batauga District, South Buton Regency. The data in this research is analyzed by using are mapping analysis, descriptive analysis, and SWOT analysis. The results of this study are: (1) Batauga district has 8 tourist objects that spread out into 7 villages, namely South Lawela, Busoa, Laompo, Masiri, Majapahit, Bola and Poogalampa; (2) The condition and tourism development strategies in Batauga District is explained trough one of tourist object, the Kabura-burana bathe destination has infrastructure, namely: gazebos, mosques, changing rooms, and stalls. Access to the Kabura-burana bathe destination can be passed using two wheels or four wheels transportation; (3) The strategy for developing Kabura-burana bathe destination for the S-O strategy is a development strategy as a natural tourism area, a strategy for developing clean water sources, and a strategy for developing cultural attractions. The development strategy for the W-O strategy is a strategy for developing facilities and infrastructure, and the ST strategy is a strategy for utilizing natural resources, and the W-T strategy is a strategy for developing vegetation conservation.Keywords: Distribution, condition, tourism development strategies, Batauga

FABRIKASI SEL SURYA TERSENSITISASI DYE (DYE SENSITIZED SOLAR CELL) DENGAN VARIASI LAPISAN SCATTERING ANDRIANTO MUHARAM; WAODE SUKMAWATI ARSYAD; IDA USMAN; RAHMAT HIDAYAT
Jurnal Material dan Energi Indonesia Vol 8, No 02 (2018)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Telah dilakukan penelitian tentang fabrikasi sel surya tersensitisasi dye (Dye sensitized solar cell) dengan variasi lapisan scattering, untuk mengetahui pengaruh penggunaan lapisan scattering yang berbeda terhadap daya serap dye di dalam lapisan TiO2 melalui pengukuran absorbansi, dan pengaruh penggunaan lapisan scattering terhadap unjuk kerja sel surya melalui pengukuran I-V. Hasil pengukuran absorbansi menunjukkan bahwa tidak ada hubungan yang linear antara peningkatan nilai absorbansi dengan peningkatan nilai efisiensi sel DSSC yang dihasilkan. Penggunaan lapisan scattering terbukti memperpanjang lintasan cahaya didalam lapisan TiO2 yang tampak dari spektrum absorbansi yang dihasilkan dimana daerah penyerapannya menjadi lebih panjang melewati daerah cahaya tampak (Sampel B dan C) dan memasuki daerah penyerapan cahaya Near Infrared (NIR) (Sampel D). Hasil pengukuran I-V, sampel C2 menunjukkan efisiensi terbaik yang dihasilkan oleh sel yang menggunakan Ti-Nanooxide reflector sebagai lapisan scattering yaitu sebesar 3,43%, JSC sebesar 9,19 mA/cm2 dan VOC sebesar 0,69 Volt. Berdasarkan hasil penelitian ini, lapisan scattering yang paling cocok digunakan pada sel DSSC adalah menggunakan Ti-nanooxide reflector.

Structural analysis of CdO thin films prepared by PCI method with varied concentrations of solution Ida Usman; Waode Sukmawati Arsyad; La Ode Kadidae
Indonesian Journal Of Animal Agricultural Science (IJAAS) Vol 5, No 2 (2023): Indonesian Journal of Animal Agricultural Science (IJAAS)
Publisher : Pascasarjana Universitas Sulawesi Tenggara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/ijaas.v5i2.42367

Research about CdO thin film deposition has been conducted using the chemical immersion technique. The deposition process was conducted by immersing the glass substrate into the solution couple of cadmium acetate dehydrate (Cd(CH3COO)2.2H2O) by flitting with sodium hydroxide (NaOH). The solutions' concentrations were varied to investigate the influence of the concentration ratio of both solutions on the characteristic of resulted in CdO film. To strengthen the atomic bonding and discharge the rest of the water content, the resulting films were then heated in the furnace at 225 oC. Based on the measurement result of SEM-EDX, the Cd mass percentage in CdO thin films is quantitatively dependent on the concentration of cadmium acetate dehydrate solution. Also, the results of optical band gap determinations show that the increasing ratio of Cd to O content was a tendency in linear relation with the stricture of its optical band gap.

Analisis Struktur Lapisan Metal Oksida Zno dan Al2o3 untuk Aplikasi Foto-Anoda Sel Surya Perovskite Ida Usman; Wa Ode Sukmawati Arsyad; Dicky Berthus Christo
Jurnal Aplikasi Fisika Vol 16, No 1 (2020): JAF, Februari 2020
Publisher : Universitas Halu Oleo

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

Telah dilakukan penelitian untuk menganalisis struktur lapisan metal oksida ZnO dan Al2O3 untuk aplikasi foto-anoda sel surya perovskite. Penelitian dilakukan menggunakan metode sol-gel dimana larutan prekursor ZnO dan zinc asetat dihidrat dicampurkan dengan pelarut ethanol dan ditambah diethanolamine (DEA), kemudian dicampur selama 1 hari. Larutan prekursor selanjutnya di-doping dengan aluminium klorida (AlCl3) pada variasi konsentrasi 0,3%, 0,6%, dan 1%. Hasil prekursornya kemudian dilapiskan di atas kaca preparat menggunakan alat spin coating dan dipanaskan di atas hot plate. Lapisan tipis yang dihasilkan kemudian dikarakterisasi XRD dan SEM untuk mengetahui ukuran kristal dan morfologinya. Dari hasil pengukuran XRD, lapisan tipis ZnO membentuk kristal dengan 3 puncak yang terorientasi pada 2θ 31,7746o, 34,4386o, dan 36,7265o dengan ukuran kristal 35,3138 nm, 35,5584 nm, dan 71,1168 nm. Sedang hasil pengukuran SEM menunjukkan bahwa semakin bertambahnya konsentrasi dopan maka ukuran kristal semakin berkurang

The Identification of Physical-Chemical Properties to Detect Bacterial Contamination in Chicken Meat from Local Markets in Kendari, Southeast Sulawesi, Indonesia Yamin Yaddi; Ida Usman; Deki Zulkarnain; Achmad Selamet Aku; La Ode Sahaba; La Ode Muh. Munadi; Restu Libriani; Fitrianingsih Fitrianingsih
Indonesian Journal Of Animal Agricultural Science (IJAAS) Vol 5, No 3 (2023): Indonesian Journal of Animal Agricultural Science (IJAAS)
Publisher : Pascasarjana Universitas Sulawesi Tenggara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/ijaas.v5i3.45277

The absence of microbial contamination is one requirement for the viability of using chicken meat as a feed ingredient. Many microbes that are implicated as food pollutants come from bacterial families. This study aimed to identify and characterize contaminating bacteria in chicken meat processed at the local market's chicken slaughterhouse in Kendari. In this study, both descriptive and experimental methods were applied. Differentially selective mediums for Gram-negative bacteria were used for bacterial isolation. Bacteria were identified using the Eosin methylene blue agar (EMBA) medium, which can ferment lactose and sucrose. The presence of bacteria was confirmed macroscopically using biochemical characteristics and microscopically using Gram stain staining. The ability of bacteria to ferment glucose, sucrose, and lactose and their ability to produce gas and H2S were identified based on their physicalchemical properties through the Triple Sugar Iron Agar (TSIA) test. The results showed that 96% of the examined samples were microbially contaminated. The various types of infecting bacteria included 52% of Pseudomonas sp., 68% of Salmonella sp., and 36% of Escherichia coli. Poor hygiene practices are the main cause of contamination in chicken meat during production. The local market in Kendari sells chicken meat that does not fulfill food safety criteria, especially given bacterial infection.

Co-Authors Adrian Rahmat Nur Afifah Fauziyah Al Jalali Muhammad Alfirman Alfirman ANDRIANTO MUHARAM Andry Nur-Hidayat Anita Indriasary Arba, Muhammad Arry Yanuar AS Aku, AS Ashari Midana Baharuddin Bahriddin Abapihi Chun Wu Deki Zulkarnain Dicky Berthus Christo Dylan James Brunt Fitrianingsih Fitrianingsih Gemmy Lisar Gilbert Fleischer I Nyoman Sudiana I Nyoman Sudiana Ismail Saleh Jamili Jamili La Aba La Aba La Agusu La Agusu La Ode Adi Parman Rudia La Ode Ahmad Nur Ramadhan La Ode Andi Gusman La Ode Arsad Sani La Ode Kadidae, La Ode La Ode Muhamad Munadi La Ode Rusman M. Zamrun F. Muh. Angga Anugerah Muh. Harun Al Rasyid Muhammad Amrullah Pagala Muhammad Arohman Muhammad Zamrun Mukhsar . Nur Arfa Yanti Olivia Stefhany Wijaya Purwo Adi Setyo RAHMAT HIDAYAT Sawaluddin Sawaluddin Setyanto Tri Wahyudi Suriana Suriana Ulpiani Ulpiani Viska Inda Variani Wa Ode Sukmawati Arsyad Wa Ode Sunaria Waode Sukmawati Arsyad Yamin Yaddi Yumna Wati Yusnita Sari

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