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INDONESIA
INDONESIAN JOURNAL OF APPLIED PHYSICS
Published by Universitas Sebelas Maret
ISSN : 20890133     EISSN : 24776416     DOI : -
Core Subject : Science,
Astronomy Energy Materials Science & Nanotechnology Physics
Indonesia Journal of Apllied Physics provides rapid publication of short reports and important research in all fields of physics. Indonesia Journal of Apllied Physics publishes articles that are of significance in their respective fields whilst also contributing to the disclipline of physics as a whole. Articles should be submitted to the Editorial Office of Indonesia Journal of Apllied Physics through this site. Further information on submission is also available at this site
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Articles 9 Documents
 1 
Search results for , issue "Vol 3, No 02 (2013): October" : 9 Documents clear
Solusi Persamaan Schrödinger untuk Potensial Hulthen + Non-Sentral Poschl-Teller dengan Menggunakan Metode Nikiforov-Uvarov Nani Sunarmi; Suparmi S; Cari C
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 02 (2013): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i02.1266

Abstract

The Schrödinger equation for Hulthen potential plus Poschl-Teller Non-Central potential is solved analytically using Nikiforov-Uvarov method. The radial equation and angular equation are obtained through the variable separation. The solving of Schrödinger equation with Nikivorov-Uvarov method (NU) has been done by reducing the two order differensial equation to be the two order differential equation Hypergeometric type through substitution of appropriate variables. The energy levels obtained is a closed function while the wave functions (radial and angular part) are expressed in the form of Jacobi polynomials. The Poschl-Teller Non-Central potential causes the orbital quantum number increased and the energy of the Hulthen potential is increasing positively.
Model Laboratorium Lapangan Identifikasi Limbah Cair Menggunakan Metode Cross-Hole Geolistrik Resistivitas Reza Devianta; Budi Legowo; Hery Purwanto
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 02 (2013): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i02.1246

Abstract

It has been done a cross-hole method of field laboratory geoelectrical resistivity to identify the wastewater in Grogol, Gatak, Delanggu, Jawa Tengah. Measurements were performed using McOHM 2119C-EL OYO Resistivity meter. The Anomaly of the object that has given of this research is wastewater. The data acquisition of cross-hole model use dipole-dipole geoelectrical configuration. The distance between the two boreholes is 3 m and spaced electrodes that used are 0,1 m; 0,2 m; 0,3 m and 0,4 m. The Data will be taken from the movement of saline water anomaly that mobiles on the ground and each taking every 4 days for 5 times of the data acquisition. A description of the result of the anomaly will be reviewed using RES2DINV 3.56software. The visualization of the movement of wastewater model on day 4th is at a depth of 0,4 m – 0,6 m at a distance x = 0,5 m - 2,5 m with resistivity 10 - 10,8 Ωm. On day 8th is located at a depth x = 0,5 m – 0,8 m, x = 0,5 m – 2,5 m with resistivity 10 - 14 Ωm. And on day 12th is located at a depth of 0,8 m – 1,2 m at a distance x = 0 m – 0,5 m, x = 2,5 m - 3,0 m and x =1,5m - 2,5 m with a resistivity of 12,4 - 15 Ωm.
Sintesa Titanium dioxide (TiO2) untuk Dye-Sensitized Solar Cell dengan Antosianin Bunga Rosella (Hibiscus sabdariffa) Elsa Ayu Adhitya; Ari Handono Ramelan; Suharyana S
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 02 (2013): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i02.1268

Abstract

Synthesis of titanium dioxide (TiO2) for dye sensitized solar cell (DSSC) with anthocyanins rosella (Hibisccus Sabdariffa) has succesfully been done using sol-gel technique. The semiconductor layer is a very important part of the DSSC since it gives a high surface area for dye absorption which gives rise to high currents. DSSC was formed structually two electrodes sandwiching the electrolyte. The working electrode is TiO2 layer coating on a Fluorine doped Tin Oxide (FTO) glass substrat and sensitified with anthocyanin dye. A counter electrode is carbon coating on the FTO. The fabricated solar cells have an area of 1.5 cm2, soaked in the anthocyanin dye for 24 hours and 48 hours. The sample was characteriz with X-ray diffraction method. The X-ray diffractogram indicates that the sample possesses rutile and anatase phase. The dye absorption measured using spektrofotometer UV-Visible Lambda 25 showed theabsorption occurs in the range 440-620 nm. The efficiencies of the solar cells measured by I-V meter Keithley for 24 and 48 hours soaking are 0.0064(6)%, and 0.0151(4)%, respectively.
Pengukuran Variabilitas Co2 dan Analisis Dampak Perubahan Iklim (Studi Kasus: Semarang) R Gernowo; A Kusworo; Z Arifin
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 02 (2013): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i02.1248

Abstract

The increasing emission of CO2 in the air has led to the need to measure the gas content on a regular basis. The gas accumulates slowly in the layers of Earth's atmosphere. However, this need is constrained by a number of issues that later affect the accuracy of the mapping which includes the continuously circulating gas in the atmosphere. Researchers suspect that the amount of CO2 and other gases is getting higher due to the many additional human produced carbon emissions from burning fossil fuels. In this study climate change analysis was conducted in Semarang. The study looks deeper in the CO2 variability data from referencestudies and performs analysis of climate data from rainfall and CO2 measurement data of Semarang.
Pengaruh Penggunaan Binder terhadap Densitas dan Kalor Pembakaran Briket dari Limbah Sagu Hendri Widiyandari; Wahyu Setiabudi; Agus Subagio; Sri Haryanti; Parsaoran Siahaan; Heru Tjahjana
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 02 (2013): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i02.1270

Abstract

Biomass fuel such as briquette is one of an alternative energy regarded to the shortage of the fosil fuel and rising its prices. The byproduct of sago starch industry is the waste that remain the environmental problem because of the odor. However this agricultur waste such as trunk cortex and fibre has a potential application as a raw material for briquette.The fibre and trunk cortex act as matrix material of briquette. The utilizing of sago waste as a biomass briquette and the effect of ratio of matrix/binder to the density, time of compustion and gross heat of the briquette have been elucidated sistematically. The analyzing of gross heat using adiabatic calorimetry indicated that the briquette prepared with the ratio of binder/matrix of 3:4 (mass ratio) had the maximum value of 3929.5 kal/g. The duration of combusion was proposional with density of the briquette.
Penerapan Model Pembelajaran Latihan Inkuiri untuk Meningkatkan Keaktifan Lisan dan Hasil Belajar dalam Pembelajaran Fisika Pada Siswa Kelas VII SMPN 2 Pandak Bantul Widodo W; Dwi Nursati
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 02 (2013): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i02.1250

Abstract

Based on the observations in SMP Negeri 2 Pandak, it was found that the activity and spirit of students in learning activities were low. The student oral was low and the quality of student learning was under the minimal completeness criteria. The aims of this research were to improve students learning outcomes of cognitive aspects, affective aspects of students andpsychomotor aspects of students after attending a t inquiry practice learning model. Design research is a classroom action research (CAR), which consists of 3 cycles. Subjects in this study are students of class VII-D SMP Negeri 2 Pandak, Bantul. The research instrument that was used consisted of the lesson plan, student worksheets, observation sheet to observe the implementation of inquiry practice learning model, students orally activities, affective aspectsof students, and psychomotor aspects of the student, while the tests was used to measured cognitive aspects of students. The results showed that there were an increase in oral activity ofstudents, learning outcomes of cognitive aspects, affective aspects, and psychomotor aspects of students.
Identifikasi Sumber Air Tanah dalam Berdasarkan Analisis Data Resistivitas di Daerah Bandara Adi Soemarmo, Solo, Jawa Tengah Caga Setia; Darsono D; Cari C
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 02 (2013): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i02.1240

Abstract

The research was around in the Adi Soemarmo Airport area, Solo, Central Java. The growing development and the increased need for water to be basic the importance of this research. The purpose of this research to sources of ground water and state of rocks lithology. This Research using geoelectric method Schlumberger configuration using tools resistivitiy McOHM OYO Model 2119C-EL. The measurements were made much as 6 point sounding, electrode AB/2stretch scattered around the Adi Soemarmo Airport with varying penetration depths ranging from 1.5 meters up to 400 meters with stretch of the electrode reaches 800 meters. Furthermore, the value of resistivity in the field measurements made longitudinal section and water content analysis approached using IP2WIN interpretation software. the results of the study showed that at the point of sounding 2, 1, and 3 at depths greater than 130 meters areallegedly identified the source of ground water and the at point of sounding 7, 4, and 5 over 100 meters.
Analisa Receiver Function Teleseismic untuk Mendeteksi Moho pada Stasiun Bkb Data Meramex Rian Amukti; Wiwit Suryanto
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 02 (2013): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i02.1272

Abstract

It has been done a research to determine internal earth using receiver function teleseismic analysis method. This method have been done by using MERAMEX (MErapi Amphibious Experiment) data from broadband seismometer BKB. Event of teleseismic is chosen from Honshu Japan with radius 30o and magnitude 7.2. This research begun by analysing radial and vertical characteristic of teleseismic eventand using bandpass filter with range 0.003 Hz – 0.5 Hz. Then Iteractive Deconvolution is used to get velocity model. The result of this model shows crustal model that has 4 Km thick upper crust, a 26 Km thick lower crust and 10 Km thick Moho transition zone, with velocity increasing gradually.
Structural Analysis of Nanoceria Powder Precipitated in Different pH Iis Nurhasanah; Nurul Wahyu Puspaningrum; Ida Nursati
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 02 (2013): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i02.1252

Abstract

Nanoceria has been proposed as inorganic material for sunscreen product because of its excellent UV absorpsition ability. Fine particle nanoceria and non-aglomeration determines comport and covering capability on human skin. Particle size and aglomeration could be controlled by parameters and medium synthesis. In the present work, nanoceria powders were synthesized using precipitation method in different pH of 7 and 10. Precipitation was cariedout in water/isopropanol mixed solvent. Cerium nitrate and amonium hydroxide was used as source of cerium and precipitation agent, respectively. Crystal structure of nanoceria was examined using x-ray diffraction (XRD). Scanning electron microscope (SEM) was used to observe morphology of nanoceria. Diffraction pattern analysis shows that the precipitates were single phase of nanoceria with cubic fluorite structure and lattice contants of 0.5429 nmand 0.5419 nm. Crystallite size and lattice strain were obtained from Williamson-Hall method. Precipitation in pH of 7 resulted in smaller crystallite size which correlated to the larger lattice strain and lattice constant. SEM image shows spherical morphology with less agglomeration occuring for nanoceria precipitated in pH 10.

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