cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Syafriani
Contact Email
syafri@fmipa.unp.ac.id
Phone
+6281267996692
Journal Mail Official
fisikasains@fmipa.unp.ac.id
Editorial Address
Department of Physics Universitas Negeri Padang UNP Prof. Dr. Hamka Street, Air Tawar, Padang 25131
Location
Kota padang,
Sumatera barat
INDONESIA
Pillar of Physics: Jurnal Berkala Ilmiah Fisika
Published by Universitas Negeri Padang
ISSN : 23379030     EISSN : 26852608     DOI : http://dx.doi.org/10.24036/10741171074
Core Subject : Science,
Earth & Planetary Sciences Materials Science & Nanotechnology Physics
This journal publishes original articles on the latest issues and trends occurring internationally in: 1 Geophysics, 2 Electronics and Instrumentation, 3 Material Physics, (4) Computational Physics. Other topics are related to physics are most welcome.
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 16 Documents
 1   2 
Search results for , issue "Vol 3 (2014)" : 16 Documents clear
ANALISIS DATA PARAMETER HUJAN MENGUNAKAN FITUR GUIDE PADA MATLAB BERDASARKAN HASIL PENGUKURAN INSTRUMEN OPTICAL RAIN GAUGE DI LOKA PENGAMATAN ATMOSFER KOTOTABANG LAPAN Soni Darma Laserio
PILLAR OF PHYSICS Vol 3 (2014)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (292.719 KB) | DOI: 10.24036/1128171074

Abstract

Optical Rain Gauge (ORG) is an instrument rainfall monitoring. Rainfall data analysis from ORG is use to determine the type of Oldeman climate classification. Rainfall data conditioning uses matlab then comparing the type and sub type climate of Oldeman. ORG has been installed in Kototabang (0.20S; 100.320 E). The research have three Resuls. First,ORG Receiver box measure rainfall by detecting osillation of light when the IRED output blocked by water droplets. Secondly, the user interface of rainfall data conditioning were made by Matlab GUIDE the features of Matlab. Third, the results of rainfall data analysis from 2010 and 2011 ORG-815 output data is the Oldeman climate types for Kototabang area. Oldeman climate type for 2010 data is  D1 type and the year 2011 is C2 type. Keywords: Rain, Parameter, Guide Fitur, Instrument, ORG
ESTIMASI KEDALAMAN BATUAN DASAR DI DESA KAMPUNG MANGGIS KECAMATAN PADANG PANJANG BARAT MENGGUNAKAN METODE INVERSI ROBUST 2D DATA GEOLISTRIK TAHANAN JENIS KONFIGURASI WENNER Basra Kurniawan
PILLAR OF PHYSICS Vol 3 (2014)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (741.625 KB) | DOI: 10.24036/1123171074

Abstract

The aimed of this research are to determine the resistivity and the depth of basement rocks in Kampung Manggis Padang Panjang Barat area. The resistivity and the depth of basement rocks in Kampung Manggis are important to know to anticipate landslide caused excessive load on the surface of the earth. This research use resistivity geoelectrical method with Wenner configuration. The data of this research were taken  four tracks using ARES (Automatic Resistivity). The data were processed using Res2Dinv v3,59 software with Robust 2D inversion to obtain a 2D cross-section beneath the earth’s surface. The result of this research showed that type of basement rock in Kampung Manggis Padang Panjang Barat is an igneous rock groups, namely Andesite. The resistivity of this Andesite is 170 – 790 Ωm. The depth of basement rocks below the earth’s surface varies, which generally more than 20 m deepness around Kampung Manggis Padang Panjang Barat area . Keywords – Basement Rocks, resistivity, Wenner, Robust 2D inversion
Pengaruh Viskositas Fluida Terhadap Sifat Hydrophobic dari Berbagai Macam Daun Dahlia Gusrita
PILLAR OF PHYSICS Vol 3 (2014)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (538.913 KB) | DOI: 10.24036/1118171074

Abstract

Most human uses material is a material that is susceptible to liquid. The risk of material quickly and easily damaged when exposed to dirty liquid. Each liquid has a viscosity different, so it needs some information about the characteristics of the material is hydrophobic in nature to be applied in the manufacture of the material. The purpose of this study was to determine the effect of fluid viscosity on the hydrophobic properties of various kinds of leaves. From this research, the contact angle values obtained on average at each leaf with a variation of fluid distilled water, grease and oil . Value of the average contact angle generated at each sample starfruit leaves, cassava leaves and leaf velvetleaf with distilled water fluid (η=0.0538Ns/m2), oil (η=0.1352Ns/m2), and oil (η=0.1835Ns/m2) respectively were 122.3500, 49.7200 and 43.7500 on the leaves starfruit, 127.4400, 49.4200 and 26.1500 in the cassava leaves, 131.9200, 45.5600 and 17.700 in the leaves of velvetleaf . So this study shows that the viscosity of the fluid affect the value of the contact angle and hydrophobic properties, ie the greater the viscosity the smaller the contact angle and hydrophobic properties on the wane . Keywords: Hydrophobic , contact angle , viscosity , Genjer leaves , Carambola Leaves , Leaves Cassava
Analisis Penambahan Gula Jagung Terhadap Karakteristik dan Degradasi Plastik Biodegradable Air Pati Ubi Kayu (manihot utilissima) Miftahul Jannah
PILLAR OF PHYSICS Vol 3 (2014)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (531.842 KB) | DOI: 10.24036/1127171074

Abstract

Currently of materials used to package food and drink one of them is plastic. Along times, needs of plastics is increasing in many areas of life. The other, the use of plastic as a packaging material dealing with environmental issues, which can not be explained naturally by microbes in the soil. This leads to the buildup of plastic wastes that causes pollution and damage to the environment and also has a negative effect on human life. To reduce such problems, find solutions to make environmentally friendly plastics are biodegradable and do not spread pollution, the biodegradable plastic. Plastic biodegradable this study with the addition of corn sugar, 1g, 3g, 5g, 7 g and 9 g. Tests were carried out to obtain the value of flexural strength and degradation of biodegradable plastic water cassava starch as follows: corn sugar obtained without the addition of flexural strength kg/m2 8.81 x 103, 6.76 x tensile strength 103 kg/m2, 29.26% degradation. On the addition of 1g flexural strength obtained 19.03 x 103 kg/m2, tensile strength is 4.26 x 103 kg/m2, 11.88% degradation. On the addition of 21:26 flexural strength obtained 3g x 103 kg/m2, tensile strength is 2.82 x 103 kg/m2, 10:10% degradation. On the addition of flexural strength obtained 5g 29.20 x 103 kg/m2, tensile strength x 103 kg/m2 9:49, 7:01% degradation. For additional flexural strength values ​​obtained 7g 32.61 x 103 kg/m2, 12:18 tensile strength x 103 kg/m2, 6:59% degradation. On the addition of flexural strength obtained 9g 35.94 x 103 kg/m2, 13:46 tensile strength x 103 kg/m2, 5:01% degradation. Biodegradable plastic addition of cassava starch corn sugar has a value of flexural strength and tensile strength is good but slow degradation.   Keywords:BiodegradablePlastic, CornSugar, Mechanical PropertiesandDegradatio
PENGARUH VARIASI KOMPOSISI AMPAS TEBU DAN SERBUK GERGAJI PADA PAPAN PARTIKEL TERHADAP KONDUKTIVITAS TERMAL Fitri Maiwita
PILLAR OF PHYSICS Vol 3 (2014)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (345.849 KB) | DOI: 10.24036/1122171074

Abstract

Lack of utilization of bagasse and sawdust has been a big problem for the sugar and the wood industry in Indonesia. Bagasse and sawdust is used as fuel only and the rest is thrown away. The content of the bagasse lignocellulosic allows to be used as particle board. Particle board with variations in the composition of bagasse and sawdust had been investigated previously by testing his physical and mechanical properties. However, the thermal conductivity testing has not been done. Therefore, researchers would like to continue this research by testing the thermal conductivity of the particle board with thermal conductivity apparatus,, because it contains silica bagasse. Silica is a ceramic material that is an insulator so it is hoped will be used as a heat isolator. Created by varying the particle board bagasse and sawdust that is 100 % : 0 % , 75 % : 25 % , 50 % : 50 % . The process of manufacture of particle board made ​​with compression heat for 20 minutes with pressure of 160 kg/m2 and temperature of 180 ° C. Based on the results obtained by the value of the thermal conductivity of particle board with a composition ratio of bagasse and sawdust 100 %: 0 is equal to 0.08 W / m ° C, 75 % : 25 % ie 0.11 W / m ° C , and 50 % : 50 % ie 0.14 W / m ° C. The smaller the bagasse composition, the greater is thermal conductivity. From the results obtained, it can be concluded that the particle board as an heat isolator has the lowest thermal conductivity, that is 0.08 W / m ° C with 100 % bagasse composition. Giving sawdust makes thermal conductivity value increases so that the quality of heat isolator decreases. Keywords: Bagasse , Sawdust , Thermal Conductivity , Particle Board
KARAKTERISTIK FISIS PEMANCARAN CAHAYA KUNANG - KUNANG TERBANG (Pteroptyx Tener) Melfita Sari
PILLAR OF PHYSICS Vol 3 (2014)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (610.153 KB) | DOI: 10.24036/1131171074

Abstract

In the city of Padang area Sungai Lareh discovered species of fireflies Pteroptyx tener. At the fireflies information about the physical characteristics of the light transmitting species is unknown. This information is essential for many applications especially in the field of bioluminisensi. Therefore carried out research with the aim of assessing the physical characteristics of the light transmitting fireflies, covering the wavelength of light emitted at maximum intensity, the decay constant, the value of the quantum yield, the number of photons emitted per second and the activation energy. This kind of research is ex post facto reveal the physical characteristics of transmitting light of fireflies and no treatment on the object under study. To obtain the data in this study using a measuring instrument that is light emission intensity: UV-VIS spectrophotometer. Fireflies used are taken from the Sungai Lareh koto Tangah Padang. The result is the value of the wavelength of maximum relative intensity is 540 nm. This value is at the wavelength of visible light with a greenish yellow color. These results are consistent with the observation that the color of light emitted by fireflies the yellow-green color. Konsatanta decay resulting from fireflies obtained at 0.0046 quanta per second, and the number of photons emitted per second by fireflies (Pteroptyx tenner) is equal to 9.93209 x 1011 quanta/second. the value of these photons can be obtained quantum yield is 0.56819. Keywords: Bioluminisensi, the fireflies, the wavelength at maximum intensity, quantum yield and activation energy.

Page 2 of 2 | Total Record : 16

 1   2 

Filter by Year

2014 2014


Reset
Filter By Issues
All Issue Vol 18, No 1 (2025) Vol 17, No 2 (2024) Vol 17, No 1 (2024) Vol 16, No 2 (2023) Vol 16, No 1 (2023) Vol 15, No 2 (2022) Vol 15, No 1 (2022) Vol 14, No 2 (2021) Vol 14, No 1 (2021) Vol 13, No 2 (2020) Vol 13, No 1 (2020) Vol 12, No 2 (2019) Vol 12, No 1 (2019) Vol 11, No 2 (2018) Vol 11, No 1 (2018) Vol 10 (2017) Vol 9 (2017) Vol 8 (2016) Vol 7 (2016) Vol 6 (2015) Vol 5 (2015) Vol 4 (2014) Vol 3 (2014) Vol 2 (2013) Vol 1 (2013) More Issue