cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Hasanuddin
Contact Email
prismafisika@physics.untan.ac.id
Phone
+65895372682757
Journal Mail Official
prismafisika@physics.untan.ac.id
Editorial Address
Kantor Jurusan Fisika, Komplek Fakultas MIPA, Universitas Tanjungpura Jl. Proff. Dr. Hadari Nawawi
Location
Kota pontianak,
Kalimantan barat
INDONESIA
PRISMA FISIKA
Published by Universitas Tanjungpura
ISSN : 23378204     EISSN : -     DOI : -
Core Subject : Science, Education,
Earth & Planetary Sciences Physics Other
Jurnal ini berisi publikasi ilmiah hasil penelitian di bidang fisika baik yang bersifat teoritis maupun terapan.
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 344 Documents
 31   32   33   34   35 
Penentuan Jenis Distribusi Probabilitas dan Intensitas Curah Hujan di Pulau Kalimantan Monica Monica; Muliadi Muliadi; Riza Adriat
PRISMA FISIKA Vol 10, No 1 (2022)
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/pf.v10i1.62642

Abstract

Telah dilakukan penelitian tentang penentuan jenis distribusi probabilitas dan intensitas curah hujan di Pulau Kalimantan. Tujuan penelitian ini adalah menentukan jenis distribusi probabilitas dan intensitas curah hujan di Pulau Kalimantan. Data yang digunakan adalah data curah hujan harian maksimum di Pulau Kalimantan periode tahun 1992-2021 pada 5 stasiun yaitu Stasiun Meteorologi Supadio, Stasiun Meteorologi Beringin, Stasiun Meteorologi Temindung, Stasiun Meteorologi Gusti Syamsir Alam, dan Stasiun Meteorologi Juwata. Penelitian ini menggunakan metode Mononobe untuk menghitung intensitas curah hujan dan penggambaran kurva Intensity Duration Frequency (IDF). Hasil penelitian ini menunjukkan jenis distribusi probabilitas yang sesuai dengan data curah hujan pada 5 stasiun yang ada di Pulau Kalimantan yaitu log pearson type III. Hasil kurva IDF menunjukkan bahwa intensitas tinggi terjadi pada durasi 5 menit dan selalu meningkat dari kala ulang 2 tahunan hingga 100 tahunan serta hujan deras berlangsung dalam waktu yang singkat, namun tidak deras berlangsung dalam waktu yang lama.
Desain Algoritma K-means Clustering untuk Klasifikasi Kematangan Jeruk Siam Pontianak Cindy Priscilla Hutabarat
PRISMA FISIKA Vol 10, No 1 (2022)
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/pf.v10i1.62798

Abstract

Jeruk siam Pontianak adalah salah satu komoditas unggulan di Kota Pontianak, Kalimantan Barat yang cita rasa manisnya berasal dari kandungan gula pada daging buah. Pemilihan buah berdasarkan tingkat kematangan secara manual belum memanfaatkan teknologi secara tepat, oleh karena itu algoritma dapat digunakan untuk pemilihan buah jeruk siam berdasarkan tingkat kematangan. Penelitian ini bertujuan untuk mengklasifikasikan tingkat kematangan jeruk siam Pontianak menggunakan metode k-means clustering. Data yang digunakan sebanyak 120 buah jeruk yang diukur menggunakan refraktometer brix digital menghasilkan rentang kadar 7,6% - 13,4% brix. Data kadar gula dibagi menjadi 3 kelas, yaitu belum matang, tepat matang, dan terlalu matang menggunakan k-means clustering. Metode k-means clustering dapat digunakan untuk mengklasifikasikan kematangan buah jeruk siam Pontianak menjadi 3 kelas kematangan. Kata Kunci : Jeruk siam Pontianak, K-means Clustering, Kadar Gula
Analysis of the Density Variation on Thermal Conductivity Wood Plastic Composite Made from Lamtoro Wood (Leucaena leucocephala) And Polypropylene Waste Hazlina Hazlina; Azrul Azwar; Asifa Asri
PRISMA FISIKA Vol 10, No 1 (2022)
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/pf.v10i1.62867

Abstract

The thermal conductivity of Wood Plastic Composite (WPC) made with lamtoro wood and polypropylene (PP) was studied by varying its density. The PP was obtained from 240 ml mineral plastic glasses, and the lamtoro wood particles were shieved in 6 mesh sizes. In this study, we considered the composition ratio between PP and wood particles to be 70:30, and the thermal conductivity was measured using a thermal conductivity apparatus. Based on the data analysis, we found that the density of WPC made with PP and lamtoro wood influenced its thermal conductivity. The results showed that the thermal conductivity of sample A is 0.2 W/mºC, sample B is 0.4 W/mºC, and sample C is 0.5 W/mºC, for the densities of 0.4 g/cm3, 0.5 g/cm3, 0.6 g/cm3, respectively. In conclusion, as the density increases, the thermal conductivity of WPC also increases. Thus, based on it thermal conductivity, the WPC made from PP and lamtoro wood is classified as an isolator.
Effectiveness of Mussel Shells (Polymesoda erosa) as an Adsorbent to Improve Water Quality Sari Larosa
PRISMA FISIKA Vol 10, No 1 (2022)
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/pf.v10i1.62868

Abstract

From a quality point of view, peat water cannot be used for clean water resources, therefore it is necessary to improve the quality of peat water. An alternative effort to treat peat water can be done by adsorption process using seashell shell adsorbents. This study aims to analyze the effectiveness of mussel shells (Polymesoda erosa) as an adsorbent to improve the quality of peat water. The size of the adsorbent particles is varied, namely 8 mesh, 50 mesh, and 200 mesh. We used 30 grams of adsorbent for 300 ml water sample. The results were that the adsorbent for clam shells was able to reduce the TDS level from 402 mg/l to 112 mg/l, increase the pH level from 3.43 to 7.6 from an acidic state to an alkaline state. In this case, peat water is then suitable for use. Based on the test results, within 12 hours of contact time there was an increase in levels for all parameters along with the increase in the size of the adsorbent particles. Whereas in the contact time of 7 days, the test results experienced a decrease in levels for all parameters along with the increase in the size of the adsorbent particles which is a good optimum contact time in the adsorption process. However, the adsorbent of seashell shell has not been used effectively to adsorb turbidity and color parameters.1

Page 35 of 35 | Total Record : 344

 31   32   33   34   35 

Filter by Year

2013 2023


Reset
Filter By Issues
All Issue Vol 11, No 1 (2023) Vol 10, No 3 (2022) Vol 10, No 2 (2022) Vol 10, No 1 (2022) Vol 9, No 3 (2021) Vol 9, No 2 (2021) Vol 9, No 1 (2021) Vol 8, No 3 (2020) Vol 8, No 2 (2020) Vol 8, No 1 (2020) Vol 7, No 3 (2019) Vol 7, No 2 (2019) Vol 7, No 1 (2019) Vol 6, No 3 (2018) Vol 6, No 2 (2018) Vol 6, No 1 (2018) Vol 5, No 3 (2017) Vol 5, No 2 (2017) Vol 5, No 1 (2017) Vol 4, No 3 (2016) Vol 4, No 2 (2016) Vol 4, No 1 (2016) Vol 3, No 3 (2015) Vol 3, No 2 (2015) Vol 2, No 3 (2014) Vol 2, No 2 (2014) Vol 2, No 1 (2014) Vol 1, No 3 (2013) Vol 1, No 2 (2013) Vol 1, No 1 (2013) Vol 3, No 1 PEDOMAN PENULISAN NASKAH More Issue