1 Department of Botany and Microbiology, Addiriyah Chair for Environmental Studies, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia 2 Department of Crop Science, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 305-764, Korea 3 Visiting Professor Program (VPP), King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia * Corresponding au...

1 Department of Chemistry, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; E-Mails: [email protected] (A.M.A.-M.); [email protected] (H.J.A.-N.); [email protected] (Y.N.M.) 2 Department of Chemistry, Faculty of Science, Alexandria University, P.O. Box 426-Ibrahimia, Alexandria 21321, Egypt 3 Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King ...

Sultan Ayoub Meo 1,*, Yazeed Alsubaie 1, Zaid Almubarak 1, Hisham Almutawa 1, Yazeed AlQasem 1 and Rana Muhammed Hasanato 2 1 Department of Physiology, College of Medicine, King Saud University, P.O. Box 2925, Riyadh 11461, Saudi Arabia; [email protected] (Y.A.); [email protected] (Z.A.); [email protected] (H.A.); [email protected] (Y.A.) 2 Department of Clinical Bio-Chemis...

A utomobile accidents have become one of the major problems in Saudi Arabia, just as in other parts of the world. Although Islamic rule prohibits half the population—women— from driving and forbids the consumption of alcohol—often cited as a factor in accidents in other count ries—t here were 24,594 traffic accidents involving 40,728 vehicles in Saudi Arabia in 1983. Death and injuries from aut...

Biological and Medical Research, King Faisal Specialist Hospital and Research Center, Riyadh 11211, Saudi Arabia. Present address: Environmental Health Science Bureau, Environmental Health Center, HECS, Tunney’s Pasture, Ottawa, ONT, K2M OL2, Canada. Correspondence to: Dr. Jamal Arif, MBC # 03-81, PO Box 3354, King Faisal Specialist Hospital and Research Center, Riyadh, 11211, KSA. Tel: 966-1-4...

Concentrations of airborne particulate matter with an aerodynamic diameter less than 10 μm (PM10) and five gaseous air pollutants (O3, CO, NO2, SO2 and H2S) were measured over a period of approximately six years (October 1999-June 2004) at five air quality monitoring network stations of King Abulaziz City for Science and Technology (KACST) in Riyadh city, Saudi Arabia. The main objective of thi...

TETRA outdoor large-scale received signal prediction model is presented here. The model follows log-distance model. It is derived based on received signal strength survey measurements of a TETRA system, operating in the 300-400 MHz band, in Riyadh city. The model is aimed to assist practicing engineers in the estimation of received power, or electric field strength as well as path-loss at any g...

Khulud Almutairi,1,2 Ryszard Tanaś,3,* and Zbigniew Ficek4,† 1Institute for Quantum Information Science, University of Calgary, Calgary, Alberta, T2N 1N4 Canada 2Department of Physics, King Saud University, Riyadh 11451, Saudi Arabia 3Nonlinear Optics Division, Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland 4The National Centre for Mathematics and Physics, ...

BACKGROUND The Kingdom of Saudi Arabia (KSA) has seen an increase in chronic diseases. International evidence suggests that early intervention is the best approach to reduce the burden of chronic disease. However, the limited research available suggests that health care access remains unequal, with rural populations having the poorest access to and utilisation of primary health care centres and...