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SiR and EPDM are blended together forming composite material that combined their superior properties. Nanofillers is added in order to further develop the insulating material. The formation of the dry band influences the electric field distribution along the insulator and can result to partial arc and flashover. Thus, the objective of this work is to analyse the relationship of electrical field distribution...
Coronal Mass Ejections (CMEs) are well known as one of the most massive eruptions which potentially create major disturbances in theinterplanetary medium and initiate severe magnetic storms when they collide with the Earth's magnetosphere. As indicated with radio signatures so-called type II and III burst. It also divided by sub-type of burst depending on the physical characteristics and different...
Halo event of coronal mass ejections (CMEs) had been once in a while reported in coronagraph observations of the Sun before the Solar and Heliospheric Observatory (SOHO) mission has been carried out. However, since mid-1996 the SOHO Large Angle Spectrometric Coronagraph (LASCO) instruments have observed numerous halo or partial-halo CMEs. Partial halo is when CMEs aimed at Earth which is called as...
Solar radio burst originated at the layer of the atmosphere where the Geo-effective disturbance occurred which energy will be released in solar flares and Coronal Mass Ejections (CMEs) will be launched. Solar Radio Burst can be divided into 5 types and determined by using the Log Periodic Dipole Antenna (LPDA) and e-CALLISTO system. The LPDA was set up in a 45-870 MHz range in frequency and has maximum...
The solar radio bursts are the results of solar flares take place on the surface of the Sun. Some of them could reach the surface of the Earth and can be detected by the ground base antenna. The CALLISTO system is used to interpret the radio bursts that have been detected by the antenna before the results appeared on the computer's screen. The CALLISTO system consists of software and hardware with...
Managing a project involves a process of synchronizing two different organizations with two different cultures. In doing so, mutual agreement on certain things and levels is a must for that project to be run smoothly. Therefore, the objective of this paper is to identify the essential requirement for school-university collaboration specifically for 'Creating Awareness on Light Pollution' (CALP) Project...
The Callisto network systems are widely used for continuous data collection of solar activities every day through the internet connection and stored in the central database in the computer. The system installation began in 2002 in Zurich, and its network has spread all around the globe ever since, benefiting researchers and individuals worldwide. This research paper presents one of selected event...
Abstract- This paper highlighted on the unique occurrence of the Solar Radio Burst Type III (SRBT III) during the high activities of the Sun. e- CALLISTO network is the system that responsible for the observation of the Sun 24 hours per day, which is a program under IHY/UNBSSI and ISWI instrument deployment program. The data was taken from one of the part of e-CALLISTO network which is Bleien, Switzerland...
Light pollution is an anthropogenic by-product of modern civilization and heavy economical activity, sourced from artificial light. In addition of its detrimental impact on human, and ecology, light pollution brightens the night sky, limiting the range of visible astronomical bodies detected by naked-eye. Since it is becoming a global concern for astronomers, the level of light pollution needs to...
The E-CALLISTO (Compact Astronomical Low Cost Frequency Instrument for Spectroscopy and Transportable Observatory) network is a worldwide system in order to observe the Sun's activity in the radio region. At present, more than 80 instruments have been installed at more than 43 locations, with users from more than 113 countries in the e- CALLISTO network. At present, more than 80 instruments have been...
Significant statistical solar radio bursts type II and III data obtained with the CALLISTO (Compound Astronomical Low-frequency, Low-cost Instrument for Spectroscopy Transportable Observatories) spectrometer which has been operated between 2006 and 2011 is being reviewed and analyzed. A basic reason for our interest in analysed the statistic of solar burst is to relate the solar burst data with phenomena...
In this paper, we have identified some important Radio Frequency Interference (RFI) sources that can potentially be a problem for any future radio astronomical observations in Universiti Teknologi MARA (UiTM) and possibly in Malaysia as a whole. Analysis is done by classifying and characterizing the strength of the sources' RFI profiles. Comparison of the RFI profiles between the indoor (Faculty of...
We investigate the effect of light pollution as the important considerations that limits the quality of the sky brightness for the astronomical purpose. Selected sites that covered: Klang, Selangor, Merlimau Melaka, Ipoh, Perak ad Kuala Lipis, Pahang, Malaysia have been chosen in order to investigate the visual estimation magnitude for observing visible stars. The results also based on Bortle scale...
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