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Browsing Masters Dissertations : Laser by Title

Browsing Masters Dissertations : Laser by Title

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  • Hardness Enhancement of Human Teeth Filler (Amalgam) Using Low Level Laser 
    Elbashier, Reem Mirghani Gaafer; Supervisor, -Nafie A. Almuslet (Sudan University of Science and Technology, 2017-08-28)
    In this study, human teeth filler (Amalgam) hardness was enhanced using Low Level Laser. The amalgam samples were prepared by amalgamator device and irradiated for 30 seconds by diode laser with wavelength of 671 nm and ...
  • Hardness Improvement of Teeth Filling Material (Amalgam) by Using He-Ne Laser 632.8nm and Diode Laser 675nm 
    AHMED , HALA JAFAR ALAMIN; Supervisor,- BABIKER OSMAN ElBASHIR (sudan university of scince and technology, 2006-05-01)
    In this research we are studied the hardness of the amalgam teeth filling material by utilizing Brinell harness test apparatus. Several tests were carried out on different amalgam mixtures that were subjected to irradiation ...
  • INVEESTIGATION OF URIC ACID IN BLOOD SERUM BY RAMAN SPECTROMETER 
    Abdullah, Mohammed Hussein; Supervisor, - Wafaa SalihAbd El-Rahman (sudan university of scince and technology, 2011-11-01)
    In this work uric acid of different blood serum was investigated using Raman spectroscopy as invasive technique. Different samples (15) from patients with renal failure in homo dialysis unit – Soba University Hospital ...
  • Investigation of elements in different samples of gasoline using laser induced breakdown spectroscopy (LIBS) 
    Salih,Ahmed Mohamed; Supervisor,-Nafie Abd Allattief Almuslet (sudan university of scince and technology, 2010-12-01)
    The objective of this research was the utilization of laser induced breakdown spectroscopy (LIBS) technique in investigation of elements in three different kinds of gasoline. Q-switched-Nd: YAG Laser with 10 (ns) pulse ...
  • IRRADIATION EFFECT OF He -Ne LASER ON THE BACTERIA CAUSING URINARY TRACT INFECTIONS 
    Ebrahim, Mona Mohamed; Supervisor, - Nafie Abd Al-Lattief; Co - Supervisor, - Samia Ahmed Gumaa (sudan university of scince and technology, 2005-03-01)
    * This study aimed to determine the effect of He-Ne laser 10 mW and 632.8 nm wavelength on bacteria that can cause Urinary Tract Infection in the presence of the photosensitizers. Toluidine blue(TBO) and crystal ...
  • Laser chaos generation, modulation and synchronization by electro-optical feedback in communication systems 
    Baban,Sora Fahmi Abdalah; Supervisor,-Nafie Abd Allattief Almuslet (Sudan univresity of scince and technology, 2010-03-01)
    Chaotic dynamics are at the center of multiple studies to perfect encrypted communication systems. Indeed, the particular time evolution nature of chaotic signals constitutes the fundamentals of their application to ...
  • Measurement & evaluation of some optical properties of some materials in near IR region 
    Mohammed,Nazek Abd Allah; Supervisor, - Wafa Salih A/Rahman (Sudan univresity of scince and technology, 2009-06-01)
    In this work transmitted intensity through some material was measured using laser wavelengths (940 & 810) nm in the near infrared region then the absorption coefficients of these materials were determined and evaluated. The ...
  • Measurement &Evaluation of Scattered Laser beam and Reflectivity of Some Surfaces as a Means of Laser Safety 
    FARAH, ATIFA BUSHRA MOHAMED; Supervisor, - WAFA SALIH ABD EL-RAHAMAN (sudan university of scince and technology, 2009-02-02)
    Abstract In this study linear and angular scattered intensity of different samples were measured also the reflectivity of samples as a mean of safety was determined. Samples were chosen according to the, availability ...
  • Measurement and Evaluation of Absorption Coefficient of Some Materials for Lasers in Infra Red Region 
    Ahmed, Moawia A.Rahman A.Allah; Supervisor, - Wafa Salih A.Rahman (sudan university of scince and technology, 2011-05-01)
    In this study 3 types of materials selected: lead sulfate (PbSO4),zinc sulfide (ZnS), mixture of lead sulfate (PbSo 4) and zinc sulfide (ZnS) and antimony trioxide (Sb 2O3),which undergoes spectroscopical analysis using ...
  • Metals Soldering by Nd:YAG Laser and Conventional Method a comparative study 
    Abu Elnuor, Abu Elnuor Abdeen Ali; Supervisor, - Nafie Abdel Latif CO - Supervisor, - Sabir Mohammed Salih (sudan university of scince and technology, 2006-10-01)
    This research aimed to compare between two soldering techniques, conventional and laser methods. Metallic pieces were joined in two ways: butt and overlap as known soldering designs. The test pieces were soldered manually ...
  • Nondestructive Testing Using Laser Holography to Detect Arc-welding Defects 
    Ahmed, Gaffar Abdo Al hamed Mohammed; Supervisor, - Atta Abdalla Fadlalla Co - Supervisor, - Nafie Abd Al-Lattief (sudan university of scince and technology, 2005-01-08)
    Plates of mild steel, welded by arc-welding, had been tested using laser holography technique for inspecting the welding defects: cracks, porosity and inclusions in these plates. Also the same specimens had been inspected ...
  • The Optical Fiber Electrical Current Sensor 
    Ahmed, Sulieman Eldoud Bashir; Supervisor, - Mubarak Almahal Ahmed Co - Supervisor, - Eisa Bashier Mohammed (sudan university of scince and technology, 2007-09-01)
    In this work an optical fiber current sensor was designed and implemented using helium-neon laser (with wavelength of 632.8 nm and power of 1 mW) as light source, single mode fiber based sensing element and photomultiplier ...
  • Photobleaching of anthocyanins using tunable dye laser 
    Ahmed,Wafa Omer; Supervisor, - Ahmed Hassan S. Elkheir (sudan university of scince and technology, 2008-08-01)
    The flowers of Hibiscus sabdarifa were extracted with acidified methanol. The Anthocyanin of Hibiscus sabdarifa was obtained as red needles from absolute ethanol. A dye laser operating at 520 nm was used to bleach the ...
  • Photodegradation of Chloroform Molecules Using Fe2O3Photocatalyst 
    Khairi, Aisha Darwish Mohammed Khalid; Supervisor,-Nafie Abd Allattief Almuslet (Sudan University of Science And Technology, 2015-11-25)
    In this work a simple and active photocatalysis system was used to degradate chloroform from wastewater by irradiation with monochromatic UV light source with output power of 1200 mW and 365 nm wavelength. Fe2O3 ...
  • Photodegradation of Malachite Green Molecules Using CuO Photocatalyst 
    Mohamed, Amani Mohamed Yosif; Supervisor,-Nafie Abd Allattief Almuslet (Sudan University of Science and Technology, 2016-04-10)
    In this work the toxic Malachite green was degraded using photodegradation technique, in which a LED emitting at 365 nm and power 1200mW was used as UV source. It stimulate the copper oxide (CuO) to interact with Malachite ...
  • Photodegradation of Methyl Orange Molecules Using Laser Photocatalysis 
    Abdlrhman, Hayfaa Taj Elsier Ahmed (Sudan University of Science and Technology, 2017-05-17)
    In this work, a UV light emitting diode (LED) with a wavelength of 365 nm and power 1200 mW was used as UV source for the photodegradation of methyl orange molecules by stimulating zinc oxide, as a catalyst, to interact ...
  • Photodegradation of Rhodamine 6G molecules Using TiO2 photocatalyst 
    Mohamed Salih, Mohamed Ahmed Mahgoub; Supervisor,-Nafie Abd Allattief Almuslet (Sudan University of Science & Technology, 2014-03-01)
    In this research different amounts of semiconductor photocatalyst (TiO2) were added to Rhodamine 6G and the mixture were irradiated by narrow band of wavelengths of Ultra violet light in the range of 270 to 280 nanometers. ...
  • Production of polyacrylamide from monomer using laser 
    El-ameer, Abeer A. E. El-ameer; Supervisor, - Mohmmed A. Elkareem; Co-Supervisor,-Nafie A. Almuslet (Sudan University of Science & Technology, 2005-06-05)
    This work aims to study visible laser-induced polymerization of acrylamide. Three individual drops of the polymerization mixture were irradiated with He-Ne laser-emitting at 632.8 nm with output power of 1mW-for different ...
  • Production of Singlet Oxygen From (Eosin blue, Rosa Bengal and Safranin O) Dyes Using Coherent and Incoherent Light Sources 
    El-haj, Marwa Hassan Hijazi; Supervisor, -Nafie A. Almuslet (Sudan University of Science and Technology, 2017-10-25)
    In this work the possibility of production of singlet oxygen was investigated for three dyes, namely (Eosin blue, Rose Bengal and Safranin O) after irradiation by two light sources: the first is green diode laser with ...
  • Quality Assessment of Medical Heparin Using Laser Scattering Technique 
    Mohammed, Ebdaa Salahudeen; Supervisor, -Nafie A. Almuslet (Sudan University of Science and Technology, 2018-02-09)
    In this work, the goodness of the medical Heparin (concentration) was checked using the principle of laser scattering. A simple setup consists of diode laser with wavelength 532 nm and output power of 100 mW and USB ...

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