News

  College of Science Club visited the training center of Civil Defense in Aseer, where they get some advice and guidance on how to deal with incidents that may be face in their daily life.
  College of Science welcomes the return of its people and students from the mid-year vacation, and wishes them, if Allah wills, luck and successful semester.  
Tags: COS Salutation
The Deanship of Graduate Studies at King Khalid University (KKU) has announced the opening of admission exercise for students who wish to enroll in graduate programs, for the next academic year 1438–1439 AH. The application is available via the portal of the university on the following link (Application for Graduate Programs). The application processes will start on Sunday, 26–03–1438 AH, to last on Saturday, 09–04–1438 AH. This was stated by the Dean of Graduate Studies at the university, Dr. Ahmed bin Yahya Al Faya', who pointed out that there would be 30 graduate programs.   Dr. Al Faya' added that there would be 20 master's programs including: College of Sharia and the Fundamentals of Islam: Jurisprudence: systems (male students only), jurisprudence essentials, doctrine and contemporary doctrines, and the Quran and its sciences College of Education: Curriculum and general teaching, curriculum and methods of teaching science, the origins of Islamic and public education, and management education and supervision College Humanities: Linguistics, literature, history, and geography College of Science: Biology, chemistry, mathematics, and physics College of Languages and Translation: Translation and applied linguistics College of Administrative and Financial Sciences: Accounting program.   Furthermore, Admission is available to students in 10 doctoral programs, namely: College of Sharia and the Fundamentals of Islam: Jurisprudence, systems (male students only), jurisprudence essentials, and Sunnah and its sciences College of Education: Curriculum and general teaching program, the curriculum and methods of teaching science, education and administration and supervision program, and guidance and psychological counseling program College of Humanities: Linguistics and literature.  
The saturated and unsaturated hydrocarbons present in air as a result of different chemical industries or combustion processes. These gases can be found in the exhaust gases of automobiles and as a result of combustion of natural gas in power plants. The hydrocarbon gases are considered serious air pollutants and one of the reasons of the global warming. Those gases have serious effect on human lungs and can destroy the central nervous system upon long exposure.   On the way to purify air from those gases, a research team, consists of Doctor Mohamed Hamdy in the Department of Chemistry and Professor Doctor Guido Mul at Twente University, the Netherlands, has prepared a new photocatalyst, which can eliminate short-chain hydrocarbon gases. The study is aimed to eliminate a mixture of methane, ethane, and propane as saturated hydrocarbons, and ethylene and propylene as unsaturated hydrocarbons. The experimental results have showed that 70% of the gases has been totally degraded within an area of only 6 cm2. These results open a new route to investigate further the total elimination of harmful gases to the environment.  
Tags: COS Chemistry
Jazan is considered among the most productive fishing areas in Saudi Arabia, because there are about 50 edible fish species for human consumption out of more than 250 varieties; thus, it is considered the third-largest port with a total length of 250 km coastline on the Red Sea. Moreover, Jazan is a residential area with a high density of many industrial and agricultural activities. Nevertheless, there are not enough environmental published studies about that important region.   A research team in the Department of Chemistry; consist of Proffesor Tarek Said, Doctor Ahmed Omran, Doctor Khaled Fawy, and Doctor Abubakr Idris; has conducted, for the first time, a monitoring study to evaluate some of the heavy metal levels in commercially important fish species consumed locally. After collecting many fish samples from different fisheries in Jazan (Red Sea coasts) and conducting the necessary chemical analysis through many chemical equipments, the research team has found that the concentrations of Ni, Cu, Zn, and Cd are within the detection limit for all samples, whereas the concentrations of Co, Cr, are Pb are less than the detection limit of the used instrument. Moreover, the research team has confirmed, through Target Hazard Quotient (THQ) method, that those fish species are safe for human being consumption in weekly basis with the exception of the concentration of Cd in some fish species. In addition, a comparison between the observed levels of heavy metals with similar levels of World Records has been done. It has been found that the current levels were ≤ levels established by the Food and Agriculture Organization and the World Health Organization for human consumption of fish, with some exceptions.  
Tags: COS Chemistry
Doctor Fethi Maiz, an associate professor in the Department of Physics, has published a book entitled “Quantum Mechanics (I)” at Lambert Academic Publishing. This book is a coherent sequence of Quantum Mechanics lecture notes for undergraduate and graduate students. The order of the book chapters is well organized with increasing difficulties; such that, each chapter is rich in detailed calculations for the topic under consideration. This book assumes that the students are well aware of many physical phenomena, such as, black body radiation, photoelectric effect, Compton effect, theory of relativity, and Bohr's model of the hydrogen atom.   The contents of this book are covered in one semester according to the following sequence: Introduction and recall math Establishment of the Schrödinger equation The free particle Quantum well infinite Finished quantum well Potential barrier and quantum tunneling Linear potential Harmonic oscillator: The algebraic method harmonic oscillator: The analytical method The potential Dirac Postulates of quantum mechanics Quantum box The Schrödinger equation in 3D Numerical methods.   This book enhances the student ability to: Write correctly the Schrödinger equation in many complicated cases Solve the Schrödinger equation problem and apply correctly the conditions of continuity of the wavefunction and its normalization Apply a numerical method such as the Numerov’s one, asymptotic iteration or the Airy function approach to study systems without accurate solutions Interpret these results and verify it.  
Tags: COS Physics