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- 저자 : Albayati, Mustafa R. (검색결과 7 건)
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( Abbas Albayati ),( Burak Özkan ),( Merih Tepeoğlu ),( Çağrı A. Uysal ) 대한피부과학회 2023 Annals of Dermatology Vol.35 No.7
Basal cell carcinoma (BCC) is the most common type of non-melanoma skin cancer. Although BCC arises most commonly in sun-exposed areas of the body, such as the head and neck, it infrequently can be seen in sun-protected parts as well. Axilla is one of the least encountered areas of BCC. Delay in the diagnosis or management alongside negligence of the patient can lead to a tumor reaching a giant size. We report a case of giant axillary BCC in a 59-years old female patient with no known risk factors for skin cancers. The tumor was excised with wide margins, and the tissue defect was reconstructed with latissimus dorsi musculocutaneous flap. A 3-year follow-up did not show any sign of recurrence or metastasis.
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Abbas Albayati,Burak Özkan,Merih Tepeoğlu,Çağrı A. Uysal 대한피부과학회 2023 Annals of Dermatology Vol.35 No.-
Basal cell carcinoma (BCC) is the most common type of non-melanoma skin cancer. Al- though BCC arises most commonly in sun-exposed areas of the body, such as the head and neck, it infrequently can be seen in sun-protected parts as well. Axilla is one of the least en- countered areas of BCC. Delay in the diagnosis or management alongside negligence of the patient can lead to a tumor reaching a giant size. We report a case of giant axillary BCC in a 59-years old female patient with no known risk factors for skin cancers. The tumor was ex- cised with wide margins, and the tissue defect was reconstructed with latissimus dorsi mus- culocutaneous f lap. A 3-year follow-up did not show any sign of recurrence or metastasis.
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Talib Mohammed Albayati,Ghanim Magbol Alwan,Omar Sabah Mahdy 한국화학공학회 2017 Korean Journal of Chemical Engineering Vol.34 No.1
The Magnetic nanoporous material Fe/MCM-41 was prepared, and its physical characterization studied, to determine the effect of its properties on separation efficiency of methyl orange (MO) from wastewater by adsorption process. The experimental results were analyzed for both adsorbent mesoporous material samples, MCM-41 and magnetic Fe/MCM-41, in order to select the best operating conditions for the different studied parameters, which are: constant temperature (20 oC), pH: (2) adsorbent dosage (0.03 gm), contact time (10minute) and concentrations (30mg/L). The results demonstrate that the adsorption processes can be well fitted by the Langmuir isotherm model for pure MCM-41, with a correlation coefficient of (0.999), and fitted by the Freundlich isotherm model for magnetic Fe/ MCM-41, with a correlation coefficient of (0.994). The adsorption kinetics of MO on to MCM-41 and Fe/MCM-41 are well described by a pseudo-second-order kinetic model.
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Synthesis of ordered mesoporous SBA-15 and its adsorption of methylene blue
Anaam Akram Sabri,Talib Mohammed Albayati,Raghad Adnan Alazawi 한국화학공학회 2015 Korean Journal of Chemical Engineering Vol.32 No.9
The removal of methylene blue (MB) dye pollutant from synthetic wastewater onto mesoporous SBA-15 was studied in batch adsorption systems. The characterization for the prepared adsorbent such as: X-ray diffraction (XRD), scanning electron microscopy (SEM), BET surface area and Fourier transform infrared (FTIR) spectroscopy was achieved. The experiments were carried out to measure the adsorption capacity as a function of contact time, initial concentration (40-110mg/L), pH (3-11) and adsorbent dose (0.1-2.3 g/L). The equilibrium of the process was achieved within 20 min. Adsorption isotherms were fitted with the Langmuir, Freundlich and Temkin models. The equilibrium data were better represented with Langmuir Isotherm model. The kinetics of the MB sorption on SBA-15 was examined by using pseudo-first and pseudo-second order kinetics models. The kinetics analysis showed that the overall adsorption process was successfully fitted with the pseudo-second-order kinetic model. Good linearization of the data was observed for the initial phase of the reaction in accordance with expected behavior of intraparticle diffusion as the rate-limiting and rate-controlled step. SBA-15 can be effectively recovered by calcinations and reused fourteen times in batch system without significant loss in removal of methylene blue from aqueous solution.
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Brownbridge Oliver,Sully Matthew,Noons Joshua,Albayati Ibrahim M. 대한설비공학회 2022 International Journal of Air-Conditioning and Refr Vol.30 No.1
Commercial food outlets in the UK are responsible for 3% of the UK total energy consumption, with refrigeration systems account for 29% of this total. In this paper, a validated model that simulates a commercial refrigeration system installed over 2000 sq. ft to mimic a real express store installed at the Riseholme Refrigeration Research Centre at the University of Lincoln, UK, is presented. Investigations are conducted to examine the different failures of air conditioning (AC) systems and their impacts on the indoor store temperature, and hence on the refrigeration performance and energy consumption. Three different scenarios were examined: gradual increase in store temperature caused by an AC system with reduced performance, sudden increase in store temperature caused by a drastic AC failure and fluctuations in store temperature caused by a faulty AC system. The results of the investigation for different failure scenarios of the AC system during 3 h of continual operation showed an increase in the energy consumption of the refrigeration system by 17.4% as a result of gradual AC failure, 33.6% for the sudden failure and 5.3% for the intermittent failure. It is concluded that the AC failures caused the power drawn to increase due to spending a prolonged period of time at higher temperatures than during the normal AC operation. Also, the frequency which the compressors switch on and off increases the level of wear on the compressors. Both gradual and sudden failures of the AC system show a sustained increase in temperature that leads to a greater duty cycle for the expansion valve to increase the amount of refrigerant available. It is found that the sudden failure of the AC system had the greatest impact on the system, as the temperature of the store rises quickest, the display cases are exposed to higher temperatures for a longer time; this causes the greatest demand on the system and so lead to the largest power consumption. It is notable that for all three failure types that the product temperature experiences, there are no noticeable fluctuations and they remain comfortably within the temperature boundaries between 3 and 1 °C, as the system is able to provide an adequate cooling.
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Lgaz, Hassane,Chung, Ill-Min,Albayati, Mustafa R.,Chaouiki, Abdelkarim,Salghi, Rachid,Mohamed, Shaaban K. Elsevier 2020 Arabian journal of chemistry Vol.13 No.1
<P><B>Abstract</B></P> <P>Poor corrosion resistance of mild steel (MS) is a serious concern in many industrial applications. Application of corrosion inhibitors is a possible solution to combat steel corrosion. As yet, there is very little research reported focusing on hydrazone derivatives as corrosion inhibitors, here we present a combined experimental and theoretical study of the adsorption of three newly synthesized hydrazones (HDZs), namely, (E)-N′-(4-(dimethylamino)benzylidene)-2-((2,3-dimethylphenyl)amino)benzohydrazide (HDZ-1), (E)-2-((2,3-dimethylphenyl)amino)-N′-(4-methylbenzylidene)benzohydrazide, (HDZ-2) and (E)-N′-benzylidene-2-((2,3-dimethylphenyl)amino)benzohydrazide (HDZ-3) on the MS surface in 1 M HCl. The interaction of HDZs and the metal surface was investigated using electrochemical techniques, X-ray photoelectron spectroscopy (XPS), DFT and molecular dynamic (MD) simulations. XPS shows that inhibitor molecules form a stable layer on steel surface through chemical and physical interactions. HDZs adsorption onto the steel surface was found to follow Langmuir model. Furthermore, electrochemical measurement results demonstrated that our developed inhibitors act as of mixed-type (anodic and cathodic), with HDZ-1 showing the highest polarization resistance and lowest corrosion current density. Scanning electron microscope (SEM) was used to examine the surface morphology of the steel samples. The new hydrazones showed significantly improved steel corrosion resistance, which provides opportunities to explore the inhibitive activity of structurally similar compounds.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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