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MOLECULAR DYNAMICS STUDY OF PTX ADSORPTION ONTO N-DOPED GRAPHENE IN VACUUM AND AQUEOUS ENVIRONMENTS
ALI AZIZI 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2014 NANO Vol.9 No.8
In this study, the adsorption of Paclitaxel (PTX) drug molecule onto graphene doped with nitrogen atoms (N-doped graphene) in vacuum and aqueous environments has been investigated. To do this, we have employed a series of very accurate molecular dynamics (MD) simulations to reveal the e®ect of N atoms concentration on drug molecule adsorption. The critical value of N adatoms is obtained. The water concentration, adsorption energy, and average distance of drug molecule from surface are calculated. Overall, our ¯ndings provide crucial information for the performance of N-doped graphene in drug delivery.
Thyroid Cancer Epidemiology in Iran: a Time Trend Study
Safavi, Ali,Azizi, Fereidoun,Jafari, Rozita,Chaibakhsh, Samira,Safavi, Amir Ali Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.1
Background: Considering the rising incidence of thyroid cancer worldwide, the aim of our study was to investigate the temporal trends in the incidence of this cancer in a large population of Iranian patients. Materials and Methods: We used the Iran Cancer Data System (ICDS) Registry to assess the thyroid cancer trend from 2004 to 2010 with regard to different genders, age groups, and morphologies. To do this we analyzed the data of 10,913 new cases of thyroid cancer that occurred during these years. Results: The incidence rate (per one year) of thyroid cancer was 2.20 per 100,000 persons between 2004 and 2010 in Iran. Papillary thyroid cancer was the most common histology type, with an annual rate of 0.29 in Iran. The highest rate of prevalence in thyroid cancer was observed at the age of 45 years at the time of diagnosis. We found a female-to-male ratio of 2 in Iran. A significant decrease was detected in the trend of thyroid cancer in children <19y, which was not correlated to the trend of older patients. Conclusions: As expected, the trend of thyroid cancer increased over the 7 years, primarily contributed by papillary thyroid cancer. A rising pattern of incidence was seen in all the age groups except patients aged under 19 years.
Removal of Diazinon from aqueous solution by electrocoagulation process using aluminum electrodes
Ali Akbar Amooey,Shahram Ghasemi,Seyed Mohammad Mirsoleimani-azizi,Zohreh Gholaminezhad,Mohammad Javad Chaichi 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.6
Electrocoagulation (EC) is an electrochemical method to treat polluted wastewaters and aqueous solutions. In this paper, the removal of Diazinon was studied by EC on aluminum electrode. The effect of several parameterssuch as initial concentration of Diazinon, current density, solution conductivity, effect of pH, and electrolysis time wereinvestigated on EC performance. The obtained results showed that the removal efficiency of EC depends on the currentdensity, initial concentration of Diazinon and electrolysis time. The optimum pH is 3 and also the solution conductivityhas no significant effect on removal efficiency.
Seyed Mohammad Ali Ahmadi,Toraj Mohammadi,Navid Azizi 한국화학공학회 2021 Korean Journal of Chemical Engineering Vol.38 No.1
Mixed-matrix gas separation membranes were prepared by embedding various content of halloysite nanotubes (HNTs) (0, 0.5, 1, 1.5, and 2 wt%) within poly (ether-block-amide) matrix. XRD, FT-IR, TGA, and SEM analyses were conducted to study crystal structure, chemical bonds changes, thermal resistance, and cross-sectional morphology of the resultant membranes, respectively. Permeability values of pure CH4 and CO2 gases through the synthesized neat and mixed-matrix membranes (MMMs) were experimentally determined at constant temperature (25 oC) and several pressures (4, 6, 8, and 10 bar). The obtained results exhibited improved CO2 permeability of the MMMs comparing with the pristine Pebax membrane. As an example, at a pressure of 4 bar, raising the incorporated HNTs loading from 0 to 2wt% enhanced the permeability of CO2 from 76.50 to 101.23 Barrer.
Mild hydrocracking of 1-methyl naphthalene (1-MN) over alumina modified zeolite
박주일,Syed Ahmed Ali,Khalid Alhooshani,Nor Azizi,Jin Miyawaki,김태곤,이영진,김현석,윤성호,Isao Mochida 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.2
The catalytic activity and life of the NiMoS supported on alumina–USY zeolite (physical mixture of alumina and USY (NMAZ), USY zeolite coated with alumina (NMACZ-2)) were compared in the hydrocracking of 1-methyl naphthalene by a single run at the several reaction temperatures between 360 and 400 8C as well as repeated runs at 360 8C. The relative activity of NMAZ is slightly higher after 1 h at all reaction temperatures, but was lower after 2 h at reaction temperatures above 380 8C. The preference of NMACZ-2 became distinct and definite by further increasing the reaction time at all reaction temperatures. Too long reaction time, particularly at higher reaction temperature, decreased the yield of (alkyl)benzenes, indicating the significant progress of the successive reactions. Thus, the highest yield of alkyl(benzenes) of about 97% was obtained over NMACZ-2 after 4 h at 380–390 8C. This was much less than the yield of about 82% obtained over NMAZ after 4 h at 370 8C. Ten repeated runs at 360 8C for 6 h resulted in marked decrease of yield over NMAZ from 73% to 64%, while the decrease in yield over NMACZ-2 was only from about 80% to 78%. The decrease of catalytic activity appears to reflect the coke formation on the USY which occurs on the naked acidic site of the substrate, which are rather isolated from the NiMoS on alumina. In contrast, alumina-coated support keeps USY underneath the alumina, which carries NiMoS and acidic sites on the same surface. The acidity of surface alumina is moderated by the underneath USY. The adequate acidity of the neighboring NiMoS and high hydrogenation activity provide a good balance resulting in an excellent catalytic activity and life of NiMoS supported on alumina-coated USY zeolite.
Fereshteh Maskani Sereshkeh,Ali Azizi,Alireza Noroozisharaf 한국원예학회 2019 Horticulture, Environment, and Biotechnology Vol.60 No.5
Dracocephalum kotschyi pois’ (Zarrin-Giah) is an endemic endangered medicinal plant in Iran. In this study, 30 inter-simplesequence repeat (ISSR) markers were used to detect genetic relationships among 54 wild individuals from fi ve endemicpopulations of D. kotschyi . Primers amplifi ed 263 bands, of which 242 (92.1%) were polymorphic. Cluster analysis, populationinference, and principal coordinates analysis revealed a broad genetic variation among the populations. The highestintrapopulation diversity was observed within the Arak population. Gst and Nm mean indices of the populations were foundto be 0.27 and 1.31, respectively. Analysis of molecular variance showed that the mean genetic diversities within and amongthe populations were 74% and 26%, respectively. The most similarity was between Isfahan and Alborz populations, whereasthe least similarity was between Arak and Tehran. Based on STRU CTU RE analysis, samples were divided into four groups. The fi ndings of this work indicate that ISSR analysis could be a suitable technique for genotyping and characterizing D. kotschyi populations. Information on diversity, found in this study, will help to conserve, domesticate and cultivate D. kotschyifor nutraceutical and pharmaceutical uses.
A Baseline Assessment of Coral Reef in Malacca Straits, Malaysia
Che Din Mohd Safuan,Azizi Ali,Zuraini Zainol,Ahmad Ali,Mohd Fadzil Mohd Akhir,Aidy M. Muslim,Zainudin Bachok 한국해양과학기술원 2018 Ocean science journal Vol.53 No.2
Coral reefs along the Malacca Straits (MS) are poorly developed mainly due to turbidity and sedimentation. This study describes the health status and community structure of the corals in Cape Rachado, West Coast of Peninsular Malaysia (WCPM), utilizing the Coral Video Transect (CVT) technique. All the survey transects were categorized as ‘fair’ coral conditions (27.39 ± 5.41%–48.56 ± 18.96%) with the reef floor mainly covered by corals and sediment. Twelve families of coral comprised of 25 distinct genera were identified. Coral communities were differentiated into four clusters with each being predominated by Galaxea, Diploastrea, Fungia and Pectinia respectively. Among all, Pectinia is the most spectacular genera and dominated the survey area. Along the MS, Favia, Favites and Porites are commonly found while Porites and Pectinia dominated the reefs. Low coral cover and diversity was recorded in MS as compared to the reefs in the South China Sea (SCS). The most prominent results include changes in the dominant coral from Porites to Pectinia while some species such as Acropora were absent from the study area. Based on the presented data, the reef in the study area was predominantly occupied by sediment and the coral communities were formed by a species with a high tolerance to turbidity and sedimentation.
A Reconfigurable Multilayer Substrate Antenna for Aerospace Applications
amine, Ksiksi Mohamed,azizi, Mohamed karim,Gharsallah, Ali International Journal of Computer ScienceNetwork S 2021 International journal of computer science and netw Vol.21 No.9
In this paper, we have simulated a rectangular microstrip patch antenna for aerospace applications based on graphen as a conductor and a multilayer substrate .as a result of the use of the graphen patch we obtained a reconfigurable antenna on the frequency range (0.6-0.7 terahertz) with a gain up to 12 db. The simulation of this antenna has been performed by using CST Microwave Studio, which is a commercially available finite integral based electromagnetic simulator.
Structural performance of precast foamed concrete sandwich panel subjected to axial load
Y. H. Mugahed Amran,Raizal S. M. Rashid,Farzad Hejazi,A. A. Abang Ali,Nor Azizi Safiee,Sani Mohammed Bida 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.4
In this paper, experimental and simple analytical studies on the structural behavior of Precast Foamed Concrete Sandwich Panel(PFCSP) were reported. Full-scale tests on six PFCSP panels varying in thickness were performed under axial load applications. Axial load-bearing capacity, load-deflection profiles, load-strain relationships, slenderness ratio, load-displacement, load-deformation,typical modes of failure and cracking patterns under constantly increasing axial loads were discussed. Nonlinear Finite ElementAnalysis (FEA) using LUSAS software to investigate the structural behavior of PFCSP was contacted. The computed ultimatestrength values using American Concrete Institute equation (ACI318) and other empirical formulas developed by perviousresearchers which applicable to predict the ultimate strength capacity of sandwich panels were compared with the experimental testresults and FEA data obtained; therefore, very conservative values resulted, a significant agreement with the FEA data that presenteda high degree of accuracy with experiments and an increase in slenderness function.