|A review of biomass-derived heterogeneous catalyst for a sustainable biodiesel production|
SHYS Abdullah, NHM Hanapi, A Azid, R Umar, H Juahir, H Khatoon, ...
Renewable and Sustainable Energy Reviews 70, 1040-1051, 2017
|Spatial assessment and source identification of heavy metals pollution in surface water using several chemometric techniques|
A Ismail, ME Toriman, H Juahir, SM Zain, NLA Habir, A Retnam, ...
Marine pollution bulletin 106 (1-2), 292-300, 2016
|Optimization of biodiesel production by solid acid catalyst derived from coconut shell via response surface methodology|
A Endut, SHYS Abdullah, NHM Hanapi, SHA Hamid, F Lananan, ...
International Biodeterioration & Biodegradation 124, 250-257, 2017
|Population density effect on radio frequencies interference (RFI) in radio astronomy|
R Umar, ZZ Abidin, ZA Ibrahim, MSR Hassan, Z Rosli, ZS Hamidi
AIP Conference Proceedings 1454 (1), 39-42, 2012
|Assessment of total suspended sediment and bed sediment grains in upstream areas of Lata Berangin, Terengganu|
N Abd Wahab, MKA Kamarudin, MB Gasim, R Umar, FM Ata, ...
|Identification source of variation on regional impact of air quality pattern using chemometric|
A Azid, H Juahir, E Ezani, ME Toriman, A Endut, MNA Rahman, K Yunus, ...
Aerosol and Air Quality Research 15 (4), 1545-1558, 2015
|Influence factors of Radio Frequency Interference (RFI) for solar radio astronomy purpose at National Space Centre, Malaysia|
ZS Hamidi, NNM Shariff, R Umar
Journal of Physics 3, 6, 2012
|Preliminary analysis of investigation Radio Frequency Interference (RFI) profile analysis at Universiti Teknologi MARA|
ZS Hamidi, ZZ Abidin, ZA Ibrahim, NNM Shariff, UFSU Ibrahim, R Umar
Proceeding of the 2011 IEEE International Conference on Space Science and …, 2011
|Selection of radio astronomical observation sites and its dependence on human generated RFI|
R Umar, ZZ Abidin, ZA Ibrahim, Z Rosli, N Noorazlan
Research in Astronomy and Astrophysics 14 (2), 241, 2014
|Radio frequency interference in solar monitoring using CALLISTO|
ZZ Abidin, NM Anim, ZS Hamidi, C Monstein, ZA Ibrahim, R Umar, ...
New Astronomy Reviews 67, 18-33, 2015
|The study of radio frequency interference (RFI) in Altitude effect on radio astronomy in Malaysia and Thailand|
R Umar, Z Abidin, Z Ibrahim, N Gasiprong, K Asanok, S Nammahachak, ...
Middle East Journal of Scientific Research 14 (6), 861-866, 2013
|Temperature effect on the tropospheric radio signal strength for UHF band at Terengganu, Malaysia|
R Mat, MM Shafie, S Ahmad, R Umar, YB Seok, NH Sabri
communications 2, 4, 2016
|Development of stream classification system on tropical areas with statistical approval in Pahang River Basin, Malaysia.|
K Mohd, ET Mohd, AW Noorjima, J Hafizan, E Azizah, U Roslan, ...
Desalination and water Treatment 96, 237-254, 2017
|Assessment of river plan changes in Terengganu River using RS and GIS method|
MKA Kamarudin, AM Nalado, A Kasmuri, ME Toriman, H Juahir, R Umar, ...
Journal of Fundamental and Applied Sciences 9 (2S), 28-45, 2017
|Relationship of Rainfall Distribution and Water Level on Major Flood 2014 in Pahang River Basin, Malaysia|
S Nur Hishaam, K Mohd Khairul Amri, T Mohd Ekhwan, J Hafizan, ...
EnvironmentAsia 10 (1), 1-8, 2017
|Investigation on the Frequency Allocation for Radio Astronomy at the L Band|
ZZ Abidin, R Umar, ZA Ibrahim, Z Rosli, K Asanok, N Gasiprong
Publications of the Astronomical Society of Australia 30, 2013
|Radio Astronomy in Malaysia: Current Status and Outreach Activities|
UFSU Ibrahim, R Umar, MSR Hassan, ZS Hamidi
|Assessment of river plan change using RS and GIS technique|
MKA Kamarudin, ME Toriman, H Juahir, A Azid, MB Gasim, ASM Saudi, ...
Jurnal Teknologi 76 (1), 2015
|Non-ionizing radiation as threat in daily life|
SKF Syaza, R Umar, SN Hazmin, MKA Kamarudin, A Hassan, H Juahir
Journal of Fundamental and Applied Sciences 9 (2S), 308-316, 2017
|RADIO FREQUENCY INTERFERENCE: THE STUDY OF RAIN EFFECT ON RADIO SIGNAL ATTENUATION|
R Umar, SS Sulan, AW Azlan, ZA Ibrahim, WZAW Mokhtar, NH Sabri
Malaysian Journal of Analytical Sciences 19 (5), 1093-1098, 2015