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Research Pt I: Continuous Performance Test (read full description please)
“Again, Mahmut gave his best to create a scientifically based text with all requirements in English and Turkish. He had to read lots of literature and he extracted the information in them fitting in one short exposé. That's not easy!”Zaliha Y. 5 ay önce
Medical/Research writing- own database access needed
“Working with Mahmut R. was a very good experience. He wrote a special medical text with lots of citations, which were actually read by him and translated it into another language in a very short time, which I didn't expected. We would love to work again with him. A highly recommendable professional!”Zaliha Y. 7 ay önce
Project for Mahmut R. -- 2
“well done... He is a real expert... Thanks for ur help”Kadhim A. 7 ay önce
Project for Mahmut R. -- 18/10/02 15:04:58
“very good - I would like to work with you again - DEFINITELY”Hesham A. 10 ay önce
Project for Mahmut R. -- 2
“thank u very much”Hesham A. 11 ay önce
I need a MATLAB developer for creating a optimization model
“Really great freelancer. Did everything better than expected and in really short time! Thanks you! Will work on more projects!”Norman T. 11 ay önce
ResearcherDec 2013 - Dec 2017 (4 years)
I carried out research to generate particle species that important to atmospheric and extraterrestrial aerosols and particles . The techniques involve using champers to control temperature, pressure, and concentration of the species, and follow the evolution of them using FTIR spectroscopy. I wrote Matlab codes to streamline the analysis of theses data and visualize them. I also wrote codes to analyse the particles light scattering behavior and particle size distribution effect on it.
Research AssistantAug 2010 - Dec 2012 (2 years)
I conducted research to study the photochemical reactions of some simple molecules species isolated at low temperatures matrices. For that purpose, I used FTIR and laser techniques to monitor the processed and generated interesting molecular and radical species. I also used computational chemistry (Gaussian) to aid the the analysis of experimental data.
M.S.2010 - 2013 (3 years)
PhD2014 - 2018 (4 years)
Photodissociation of N-methylformamide isolated in solid parahydrogen
We report FTIR studies of the 193 nm photodecomposition of N-methylformamide (NMF) isolated in solid parahydrogen (pH2) matrices at 1.9 K. By studying the detailed photokinetics we can distinguish between primary and secondary photoproducts. We observe single exponential decay of the NMF precursor upon irradiation and identify three competing primary dissociation channels: HCO+ NHCH3; H+ CONHCH3; and CO+ CH3NH2 with branching ratios of 0.46 (7): 0.032 (8): 0.51 (6), respectively.
Quantum Diffusion-Controlled Chemistry: Reactions of Atomic Hydrogen with NO in solid pH2
Fourier transform infrared spectroscopic studies of the 193 nm photoinduced chemistry of nitric oxide (NO) isolated in solid pH2 over the 1.8 to 4.3 K temperature range. Upon short-term in situ irradiation the NO readily undergoes photolysis to yield HNO, NOH, NH, NH3, H2O, and H atoms. We map the postphotolysis reactions of mobile H atoms with NO and document first-order growth in HNO and NOH reaction products for up to 5 h after photolysis.
Spectral curve fitting of dielectric constants
In this study we use dielectric constants of three different molecular ices in the infrared region to evaluate four different model curves that are generally used for fitting optical constants: (1) the classical damped harmonic oscillator, (2) Voigt line shape, (3) Fourier series, and (4) the Triangular basis. Among these, only the classical damped harmonic oscillator model strictly satisfies the Kramer-Kronig relation.
Infrared characterisation of acetonitrile and propionitrile aerosols under Titan's conditions
Pure, crystalline acetonitrile (CH3CN) and propionitrile (CH3CH2CN) particles were formed in a collisional cooling cell allowing for infrared (IR) signatures to be compiled from 50 to 5000 cm− 1. The cell temperature and pressure conditions were controlled to simulate Titan's lower atmosphere (80–130 K and 1–100 mbar), allowing for the comparison of laboratory data to the spectra obtained from the Cassini–Huygens mission.
US English Level 180%
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