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Roslan, Umar and Hazmin Sabri, N and Syarifah Nurul Aisyah, Syed Zafar and Mat, R (2019) Northeast Monsoon Effect on Ultra High Frequency (UHF) Signal Attenuation at Kusza Observatory. In: 1st International Conference on Space Weather and Satellite Application 2018, 7-8 August 2018, Faculty of Electrical Engineering, Universiti Teknologi MARA (UiTM)Shah Alam.
Roslan, Umar and Nadirah Ishak, A and Zulaikha Mohd Afandi, N and Hazmin Sabri, N and Mohd Radzi, Z and Juraiza Ishak, A and Anwar, R (2019) Solar radio burst in National Space Agency of Malaysia (ANGKASA). In: 1st International Conference on Space Weather and Satellite Application 2018, ICeSSAT 2018, 7-8 August 2018, Faculty of Electrical Engineering, Universiti Teknologi MARA (UiTM)Shah Alam.
Nor Hazmin, Sabri and Sharifah Nurul Aisyah, Syed Zafar and Roslan, Umar and Roshidah, Mat (2018) Northeast monsoon effect on ultra high frequency (UHF) signal attenuation at Kusza observatory. In: International Conference on Space Weather and Satellite Application (ICeSSAT 2018), 07-08 Aug 2018, Shah Alam, Selangor, Malaysia.
Asnor Nadirah, Ishak and Nur Zulaikha, Mohd Afandi and Roslan, Umar and Nor Hazmin, Sabri and Zahira, Mohd Radzi and Asnor Juraiza, Ishak and Radial, Anwar (2018) Solar radio burst in National Space Agency of Malaysia (ANGKASA). In: International Conference on Space Weather and Satellite Application (ICeSSAT 2018), 07-08 Aug 2018, Shah Alam, Selangor, Malaysia.
Roslan, Umar and Syed Mohd Hafiz, Syed Omar and Hafizan, Juahir and Nor Hazmin, Sabri and Nurul Syafiqah, Hasshim and Siti Nur Dianah, Abdul Rahman (2018) Topic: i- Tabayyun:semakan isu tular berkaitan falak kontemporari menerusi aplikasi telefon pintar. In: International University Canival On E-Learning, 12-13 Sep 2018, Gombak.
Mohd Khairul Amri, Kamarudin and Muhammad Barzani, Gasim and Roslan, Umar and Abdul Rahman, Hassan (2017) Assessment of River Plan Changes In Terengganu River Using RS And GIS Method. In: International Conference on Environmental, Sports, and Recreation and Technology & Applications, 8 August 2017, UNISZA Im4U Outreach Camp, Setiu, Terengganu.
Mohd Khairul Amri, Kamarudin and Hafizan, Juahir and Muhammad Barzani, Gasim and Mohd Ekhwan, Toriman and Roslan, Umar and Azizah, Endut (2017) Development of stream classification system on tropical areas with statistical approval in Pahang River basin, Malaysia. In: International Conference on Challenges in Environmental Science & Engineering, 27 June 2017, Kaohsiung.
Roslan, Umar and Wan Khairul Aiman, Wan Mokhtar and Siti Nur Dianah, Abdul Rahman and A.N, Dagang and S.N, Hazmin (2017) Exposure Level from Selected Base Station Tower Around Kuala Nerus: A Preliminary Analysis. In: International Conference on environmental, Sports and Recreation and Technology & Applications for Disaster Management International Conference, 17 October 2017, UNISZA.
Muhammad Barzani, Gasim and Mohd Khairul Amri, Kamarudin and Roslan, Umar and Hafizan, Juahir and Mohd Ekhwan, Toriman and Diya, S.G and Ahmad Shakir, Mohd Saudi and Abdullahi, M.G and Rabiu, A.A (2017) Flood simulation model using XP-SWMM along Terengganu river, Malaysia. In: International Conference on environmental, Sports and Recreation and Technology & Applications for Disaster Management International Conference, 8 Aug 2017, UNISZA.
Roslan, Umar and Mohd Khairul Amri, Kamarudin and Siti Nur Dianah, Abdul Rahman and Nor Hazmin, Sabri and A.N, Dagang (2017) A Review on Electromagnetics (EM) Exposure Measurement Techniques from Base Station. In: International Conference on environmental, Sports and Recreation and Technology & Applications for Disaster Management International Conference (ICESR 2107), 8 August 2017, UNISZA.
Roslan, Umar and Saifful Kamaluddin, Muzakir @Lokman (2017) Three Mistakes We Have Made During Fabrication of Quantum Dots Solar Cell; How Can You Learn From Them. In: National Workshop on Functional Materials 2017, 17 - 18 January 2017, 25 April 2017, Centre for Ionics University of Malaya.
Roslan, Umar and Muzakir, S.K (2017) Three mistakes we have made during fabrication of quantom dots solar cell: How can ypu learn from them. In: Proceedings of National Workshop on Functional Material, 17-18 January 2017, Universiti Malaya.
Noorjima, Abd Wahab and Mohd Khairul Amri, Kamarudin and Hafizan, Juahir and Roslan, Umar and Azizah, Endut (2016) Assessments of sedimentation problem for river catchment management in Terengganu River, Malaysia. In: Challenges in Environmental Science & Engineering, 06-10 Nov 2016, Kaohsiung, Taiwan.
Mohd Khairul Amri, Kamarudin and Hafizan, Juahir and Mohd Ekhwan, Toriman and Roslan, Umar and Azizah, Endut (2016) Development of stream classification system on river catchment management with environmental statistical techniques approval. In: Challenges in Environmental Science & Engineering, 06-10 Nov 2016, Taiwan.
Roslan, Umar and Mohd Khairul Amri, Kamarudin and Hafizan, Juahir and Azizah, Endut (2016) Environment Protection of Radio Astronomy Measurements from Ground Based Interference. In: Conference on the Challenges in Environmental Science and Engineering, 06-10 Nov 2016, Kaohsiung, Taiwan.
Mohd Khairul Amri, Kamarudin and Roslan, Umar and Azizah, Endut and Fathurrahman, Lananan (2016) Environmental-friendly indigenous biomass as solid acid catalyst for biodiesel production from palm oil: A comparative study. In: THE CHALLENGES IN ENVIRONMENTAL SCIENCE AND ENGINEERING, 06-10 Nov 2016, Kaohsiung, Taiwan.
Roslan, Umar and Fatin Syaza, Shariff Khan and Nor Hazmin, Sabri and Azmin, Hassan and Nor Shahida, Abd Mutalibd and Ahmad Nazri, Dagang and Hajar, Jaafar (2016) Non-Ionizing Radiation as Threat in Everyday Life: A Review. In: International Postgraduate Research Conference (IPRC 2016), 08-10 October 2016, UNISZA.
Siti Nur Dianah, Abdul Rahman and Nor Hazmin, Sabri and Mohd Khairul Amri, Kamarudin and Roslan, Umar and Ahmad Nazri, Dagang (2016) A Review on the Study of EM Exposure Measurement Techniques From Base Station. In: International Postgraduate Research Conference (IPRC 2016), 08-10 Oct 2016.
Mohd Khairul Amri, Kamarudin and Roslan, Umar and Mohd Ekhwan, Toriman and Muhammad Barzani, Gasim and MG, Abdullahi and Garba, Iliyasu (2015) Assessment of Natural Groundwater Recharge in Terengganu, Malaysia. In: 1st AnnualInternational Conference, 1 November 2015, Terengganu, Malaysia.
Roslan, Umar (2015) Measurement Technique in RFI Study for Radio Astronomy Purposes. In: MPI UNISZA 2015, 14-16 April 2015, UNISZA.
Roslan, Umar and Ahmad Jazlan, Mat Jusoh and Mohd Saiful Anwar, Mohd Nawaw (2015) Pencerapan Anak Bulan Menggunakan Optik Dan Radio. In: International Seminar on al - Quran in Contemporary Society, 10 - 11 October 2015, UNISZA.
Roslan, Umar and Roshidah, M and Marhamah, M.S and Hazmin, S.N (2015) Tropical Weather Effect on the Tropospheric Radio Wave Propagation below 9GHz : A Pilot Study. In: PPSA Postgraduate Colloquium 2015 UMT, 17 October 2015, UMT.
Roslan, Umar and Z. Z., Abidin and Z. A., Ibrahim and M. S. R., Hassan and Z., Rosli and N., Noorazlan (2014) Altitude Effect on Radio Frequency Interference (RFI) in Radio Astronomy. In: 7th Mathematics and Physical Science Graduates Congress, 12-14 December 2011, National University of Singapore (NUS).
Roslan, Umar and Abidin, Z.Z.a and Ibrahim, Z.A (2014) Implementing the GIS technique for RFI mapping for radio astronomy in Malaysia. In: 2011 IEE, 12-13 July 2011, Penang, Malaysia.
Roslan, Umar and Z. Z, Abidin and Z. A, Ibrahim and N, Gasiprong (2014) The Important of 'Radio-Quietness' for Radio Astronomy. In: Siam Physics Congress (SPC) 2013, 21-23 March 2013, Chiang Mai, Thailand.
Roslan, Umar and Hamidi, Z.S.ab and Abidin, Z.Z.ab and Ibrahim, Z.A.ab and Shariff, N.N.M.ab and Ibrahim, U.F.S.U (2014) Preliminary analysis of investigation Radio Frequency Interference (RFI) profile analysis at Universiti Teknologi MARA. In: 2011 IEEE International Conference on Space Science and Communication: "Towards Exploring the Equatorial Phenomena", IconSpace 2011 - Proceedings, 12-13 July 2011, Penang, Malaysia.
Roslan, Umar and Nor Hazmin, Sabri and Zamri, Zainal Abidin and Zainol Abidin, Ibrahim (2014) RFI Study for Radio Astronomy. In: Southeast Asia Young Astronomers Collaboration, 20-21 January 2015, University of Malaya.
Roslan, Umar and Zamri, Zainal Abidin and Zainol Abidin, Ibrahim and Nor Hazmin, Sabri (2014) Radio Frequency Interferences: Vehicular Traffic Effect on Radio Signal for Radio Astronomy Purposes. In: The National Physics Conference (PERFIK 2014), 18-19 November 2015, Sunway Resort Hotel and Spa, Kuala Lumpur, Malaysia.
Roslan, Umar and Z. Z, Abidin and Z. A, Ibrahim (2014) The Study of Radio Quite Zone (RQZ) for Radio Astronomy in Malaysia. In: National Physics Conference (PERFIKS) 2012, 01 January 1970, Colmar Tropicale, Bukit Tinggi, Pahang.
Roslan, Umar and Abidin, Z.Z.a and Ibrahim, Z.A (2014) The importance of site selection for radio astronomy. In: 11th Conference of Theoretical Physics and Nonlinear Phenomena, 15 February 2014, indonesia.
Roslan, Umar and Abidin, Z.Z. and Ibrahim, Z.A. and Gasiprong, N and Asanok, K and Nammahachak, S and Aukkaravittayapun, S and Somboonpon, P and Prasit, A and Prasert., N (2013) The Important of 'Radio-Quietness' for Radio Astronomy. In: Siam Physics Congress (SPC) 2013, 21 - 23 March 2013, Chiang Mai, Thailand.
Roslan, Umar (2012) The Study of Radio Quite Zone (RQZ) for Radio Astronomy in Malaysia. In: National Physics Conference (PERFIKS) 2012, 01 January 1970, Colmar Tropicale, Bukit Tinggi, Pahang.
Roslan, Umar and Abidin,, Z.Z. and Ibrahim,, Z.A. and Hassan,, M. S. R. and Rosli, Z. and Noorazlan, N. (2011) Altitude Effect on Radio Frequency Interference (RFI) in Radio Astronomy. In: 7th Mathematics and Physical Science Graduates Congress, 12-14 December 2011, National University of Singapore (NUS).
Roslan, Umar and Abidin,, Z.Z. and Ibrahim,, Z.A. (2011) Implementing the GIS technique for RFI mapping for radio astronomy in Malaysia. In: 2011 IEEE International Conference on Space Science and Communication: "Towards Exploring the Equatorial Phenomena", IconSpace 2011 - Proceedings, 12 -13 July 2011, Penang, Malaysia.
Roslan, Umar and Hamidi,, Z.S. and Abidin,, Z.Z. and Ibrahim,, Z.A. and Shariff,, N.N.M. and Ibrahim,, U.F.S.U (2011) Preliminary analysis of investigation Radio Frequency Interference (RFI) profile analysis at Universiti Teknologi MARA. In: 2011 IEEE International Conference on Space Science and Communication: "Towards Exploring the Equatorial Phenomena", IconSpace 2011 - Proceedings, 12 -13 July 2011, Penang, Malaysia.
Roslan, Umar and Rodhiyah, Shahimi (2020) Pendekatan al-Biruni dalam Memahami Konsep Gerhana Menerusi Kitab al-Qanun al-Mas' udi [Using The al-Biruni Approach to Understand The Eclipse Phenomenon Based on The al-Qanun Al-Mas'udi Scripture]. Asian Journal of Civilizational Studies (AJOCS), 1 (2). pp. 25-39. ISSN 2682-8022
Roslan, Umar and Nurulhuda, Mohammad Yusoff and Siti Maisarah, Aziz and Azmi, Hassan and Farhana, Mohamad Yussof (2019) Radioepidemiologic and experimental evidence: Health risks associated with radiofrequency radiation exposure. International Journal of Recent Technology and Engineering (IJRTE), 8 (4). pp. 5676-5680. ISSN 2277-3878
Mohd Khairul Amri, Kamarudin and Roslan, Umar and Ahmad Puad, Mat Som (2018) The Impact of Monsoon Flood Phenomenon on Tourism Sector in Kelantan, Malaysia: A Review. International Journal of Engineering and Technology(UAE), 7 (4). pp. 37-40. ISSN 2227-524X
Mohd Khairul Amri, Kamarudin and Roslan, Umar (2018) Investigation of Road Bank Failures based on Mineralogical Composition Studies in Kano-Abuja Road Northern, Nigeria. International Journal of Engineering & Technology, 7 (4). pp. 167-172. ISSN 2227-524X
Mohd Khairul Amri, Kamarudin and Roslan, Umar and Noorjima, Abd Wahab and Ahmad Shakir, Mohd Saudi (2018) Road Traffic Accident in Malaysia: Trends, Selected Underlying, Determinants and Status Intervention. International Journal of Engineering & Technology, 7 (4). pp. 112-117. ISSN 2227-524X
Roslan, Umar and Mohd Khairul Amri, Kamarudin and Hafizan, Juahir (2018) Magnetic Data Acquisition System (MAGDAS) Malaysia: installation and preliminary data analysis at ESERI, UNISZA. Indian J Phys, 1 (1). pp. 1-12. ISSN 0973-1458
Roslan, Umar and Syed Mohd Hafiz, Syed Omar and Nor Hazmin, Sabri and Nur Athirah, Ahmad Fashil @ Ahmad Fazil (2018) Pendekatan Konsep Tabayyun dalam Isu Falak Kontemporari. BITARA International Journal of Civilizational Studies and Human Sciences, 1 (2). pp. 127-134. ISSN 2600-9080
Roslan, Umar and N. Z M., Afandi and S. N., Hazmin (2018) AUTOMATED SOLAR RADIO BURST DETECTION ON RADIO SPECTRUM: A REVIEW OF TECHNIQUES IN IMAGE PROCESSING. Journal of Fundamental and Applied Sciences, 10 (1S). pp. 249-267. ISSN 1112-9867
Roslan, Umar and Ireana Yusra, Abdul Fatah and Mohd Khairul Amri, Kamarudin and Nik Ahmad Firdaus, Nik Wan and Hafizan, Juahir (2018) Assessment Of AHP For Optical Observatory And New Moon Sighting Sites In Peninsular Of Malaysia. Journal of Fundamental and Applied Sciences, 10 (1S). pp. 432-444. ISSN 1112-9867
Roslan, Umar and Ireana Yusra, Abdul Fatah and Mohd Khairul Amri, Kamarudin (2018) Assessment of AHP for optical observatory and new moon sighting sites in peninsular of Malaysia. Journal of Fundamental and Applied Sciences, 10 (1S). pp. 432-444. ISSN 1112-9867
Roslan, Umar and N. Mohd, Anuar and A. N. F. Abdullah, din (2018) THE BEHAVIOR OF SOLAR WIND PARAMETERS AND GEOMAGNETIC ACTIVITY INDICES FOR GEOMAGNETICALLY INDUCED CURRENT OBSERVATIONS. Journal of Fundamental and Applied Sciences, 10 (1S). pp. 325-338. ISSN 1112-9867
Roslan, Umar and Z. S., Hamidi and N. M., Shariff (2018) THE ENVIRONMENT OF THE SUN DURING THE EXPLOSION OF CORONAL MASS EJECTIONS (CMES) ON 2ND MAY 2016. Journal of Fundamental and Applied Sciences, 10 (1S). pp. 352-363. ISSN 1112-9867
Roslan, Umar and Z. S., Hamidi and N. N. M., Shariff and N. F., Abdul Mutalib (2018) The Environment Of The Sun During The Explosion Of Coronal Mass Ejections (CMES) On 2nd May 2016. Journal of Fundamental and Applied Sciences, 10 (1S). pp. 352-363. ISSN 1112-9867
Roslan, Umar and M. S., Marhamah and N., Hazmin (2018) THE INFLUENCE OF SOLAR RADIATION ON RADIO SIGNAL AT UHF BAND. Journal of Fundamental and Applied Sciences, 10 (1S). pp. 268-277. ISSN 1112-9867
Roslan, Umar and Mohd Khairul Amri, Kamarudin and S. N., Hazmin (2018) NON-IONIZING RADIATION EXPOSURE: ELECTRIC FIELD STRENGTH MEASUREMENT AROUND SELECTED BASE STATIONS IN KUALA NERUS. Journal of Fundamental and Applied Sciences, 10 (1S). pp. 52-65. ISSN 1112-9867
Roslan, Umar and A. R. S. N., Dianah and S. N., Hazmin (2018) SPATIAL MODEL OF PUBLIC NON-IONIZING RADIATION EXPOSURE ON SELECTED BASE STATION AROUND KUALA NERUS. Journal of Fundamental and Applied Sciences, 10 (1S). pp. 523-540. ISSN 1112-9867
Adiana, Ghazali and Ireana Yusra, Abdul Fatah and Roslan, Umar (2018) STATUS OF POPULATION, OCCUPATION AND SEASONAL HABITAT DISPLACEMENT OF ALIEN BIRD SPECIES IN WEST JAVA TROPICAL FOREST, INDONESIA. Journal of Fundamental and Applied Sciences, 10 (1S). pp. 552-564. ISSN 1112-9867
Roslan, Umar and A. R. S. N., Dianah and S. N., Hazmin and H., Jaafar (2018) Spatial Model Of Public Non-Ionizing Radiation Exposure On Selected Base Station Around Kuala Nerus. Journal of Fundamental and Applied Sciences, 10 (1S). pp. 523-540. ISSN 1112-9867
Adiana, Ghazali and Ireana Yusra, Abdul Fatah and Roslan, Umar and Hafizan, Juahir (2018) Status Of Population, Occupation And Seasonal Habitat Displacement Of Alien Bird Species In West Java Tropical Forest, Indonesia. Journal of Fundamental and Applied Sciences, 10 (1S). pp. 552-564. ISSN 1112-9867
Roslan, Umar and S. N. A. Syed, Zafar and S. N., Hazmin (2018) WIND SPEED ON ULTRA HIGH FREQUENCY (UHF) OF RADIO SIGNAL. Journal of Fundamental and Applied Sciences, 10 (1S). pp. 278-287. ISSN 1112-9867
Mohd Khairul Amri, Kamarudin and Roslan, Umar and Abdullahi, MG (2016) The Ecological Impacts of Light Pollution at Night-time a Mechanistic Appraisal. International Journal of Environment, Agriculture and Biotechnology, 1 (1). pp. 40-44. ISSN 2456-1878
Roslan, Umar and W. M. W, Muda (2016) Assessment Of Economic Feasibility For Grid-connected Renewable Energy System For A Household Application In Terengganu. International Journal of Energy Production and Management, 1 (3). pp. 223-232. ISSN 2056-3280
Mohd Khairul Amri, Kamarudin and Muhammad Barzani, Gasim and Roslan, Umar (2016) Assessment of Total Suspended Sediment and Bed Sediment Grains in Upstream Areas of Lata Berangin, Terengganu. International Journal on Advance Science Engineering Information Technology, 6 (5). pp. 757-763. ISSN 2088-5334
Roslan, Umar and Nur Zulaikha, Mohd Afandi and Zamri, Zainal Abidin (2016) Implementation of Frequency Drift for Identification of Solar Radio Burst Type II. International Journal on Advance Science Engineering Information Technology, 6 (5). pp. 775-780. ISSN 2088-5334
Roslan, Umar and Seok, Yew Been and Roshidah, Mat (2016) Temperature Effect on The Tropospheric Radio Signal Strength for UHF Band at Terengganu, Malaysia. International Journal on Advance Science Engineering Information Technology, 6 (5). pp. 770-774. ISSN 2088-5334
Azman, Azid and Roslan, Umar and Mohd Ekhwan, Toriman (2015) Application of artificial neural network and response surface methodology for modelling of hydrogen production using nickel loaded zeolite. Jurnal Teknologi, 77 (1). pp. 109-118. ISSN 01279696
Mohd Khairul Amri, Kamarudin and Azman, Azid and Roslan, Umar (2015) Assessment of river plan change using RS and GIS technique. Jurnal Teknologi, 76 (1). pp. 31-38. ISSN 01279696
Roslan, Umar and Zamri, Zainal Abidin and Norsuzian, Mohd Anim (2015) Radio frequency interference in solar monitoring using CALLISTO. New Astronomy Reviews, 67 (1). pp. 18-33. ISSN 1387-6473
Azman, Azid and Mohd Khairul Amri, Kamarudin and Roslan, Umar (2015) Preliminary study of vehicular traffic effect on radio signal for radio. Jurnal Teknologi, 75 (1). pp. 313-318. ISSN 01279696
Mohd Ekhwan, Toriman and Mohd Khairul Amri, Kamarudin and Roslan, Umar (2015) Assessment of land use change and sedimentation modelling on environmental health in Tropical river [Penilaian perubahan guna tanah dan permodelan sedimentasi ke atas kesihatan persekitaran di sungai bertropika]. Malaysian Journal of Analytical Sciences, 19 (6). pp. 1335-1347. ISSN 13942506
Roslan, Umar and Azila, Adnan and Giridhar R., Nair (2015) Glycerol as a cheaper carbon source in bacterial cellulose (BC) production by Gluconacetobacter xylinus DSM46604 in batch fermentation system. Malaysian Journal of Analytical Sciences, 19 (5). pp. 1131-1136. ISSN 13942506
Azman, Azid and Mohd Khairul Amri, Kamarudin and Roslan, Umar (2015) Identification Source of Variation on Regional Impact of Air Quality Pattern Using Chemometric. Aerosol and Air Quality Research, 15 (4). pp. 1545-1558. ISSN 1680-8584
Roslan, Umar and Asyaari, Muhamad and Nor Hazmin, Sabri (2015) Measurement technique in radio frequency interference (RFI) study for radio astronomy purposes [Teknik pengukuran dalam kajian gangguan interferen radio (RFI) bagi tujuan astronomi radio]. Malaysian Journal of Analytical Sciences, 19 (5). pp. 960-965. ISSN 13942506
Roslan, Umar and Norsiah, Hashim and Zamri, Zainal Abidin (2015) The Nonlinear Least Square Fitting for Rotation Curve of Orion Dwarf Spiral. Sains Malaysiana, 44 (3). pp. 457-462. ISSN 0126-6039
Roslan, Umar and Mohd Khairul Amri, Kamarudin and Mohd Ekhwan, Toriman (2015) Preliminary study of radio astronomical lines effect of rain below 2.9 GHZ. Jurnal Teknologi, 75 (1). pp. 7-11. ISSN 01279696
Roslan, Umar and Sharifah Nurul Aisyah, Syed Zafar and Nor Hazmin, Sabri (2015) Radio frequency interference: The effect of ambient carbon dioxide (CO2) concentration on radio signal for radio astronomy purposes [Interferens frekuensi radio: Kesan kepekatan karbon dioksida (CO2) ambien ke atas isyarat radio dalam kajian astronomi radio]. Malaysian Journal of Analytical Sciences, 19 (5). pp. 1065-1071. ISSN 13942506
Roslan, Umar and Shahirah Syafa, Sulan and Atiq Wahidah, Azlan (2015) Radio frequency interference: The study of rain effect on radio signal attenuation. Malaysian Journal of Analytical Sciences, 19 (5). pp. 1093-1098. ISSN 13942506
Mohd Ekhwan, Toriman and Mohd Khairul Amri, Kamarudin and Roslan, Umar (2015) Spatial and temporal assessment on drug addiction using multivariate analysis and GIS [Penilaian ruang dan masa terhadap penagihan dadah menggunakan analisis multivariat dan GIS]. Malaysian Journal of Analytical Sciences, 19 (6). pp. 1361-1373. ISSN 13942506
Roslan, Umar and Nor Hazmin, Sabri and Atiq Wahidah, Azlan (2015) The effect of solar radiation on radio signal for radio astronomy purposes [Kesan radiasi solar terhadap isyarat radio untuk kajian astronomi radio]. Malaysian Journal of Analytical Sciences, 19 (6). pp. 1374-1381. ISSN 13942506
Muhammad Barzani, Gasim and Roslan, Umar and Nazirah, Zakaria (2015) A physico-chemical water quality and microbial content analysis in upstream of Langat river, Selangor [Analisis kualiti air fiziko-kimia dan kandungan mikrob di hulu sungai Langat, Selangor]. Malaysian Journal of Analytical Sciences, 19 (5). pp. 1072-1083. ISSN 13942506
Roslan, Umar and Zamri, Zainal Abidin and Zainol Abidin, Ibrahim (2014) Selection of radio astronomical observation sites and its dependence on human generated RFI. Research in Astronomy and Astrophysics, 14 (2). pp. 241-248. ISSN 16744527
Roslan, Umar and ZS, Hamidi and NNM, Shariff (2013) Space Weather: The Role of Solar Radio Monitoring in Malaysia and Implications of Sun Activities to the Earth. International Journal of Fundamental Physical Sciences, 3 (4). pp. 57-63. ISSN ISSN: 2231-8186
Roslan, Umar (2013) The study of radio frequency interference (RFI) in altitude effect on radio astronomy in Malaysia and Thailand. Middle East Journal of Scientific Research. pp. 861-866. ISSN 19909233
