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Search Results: 1 - 10 of 428 matches for " Faezeh Farzaneh "
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Facile Synthesis and Characterization of Nanoporous NiO with Folic Acid as Photodegredation Catalyst for Congo Red  [PDF]
Faezeh Farzaneh, Sara Haghshenas
Materials Sciences and Applications (MSA) , 2012, DOI: 10.4236/msa.2012.310102
Abstract: In this study nanoporous NiO was prepared using Ni(CH3COO)2,4H2O, folic acid and water as starting material, template and solvent respectively, by sol gel method followed by calcination at 400℃. The solid product was characterized by X-ray diffraction (XRD), nitrogen adsorption-desorption, scanning electron microscopy (SEM), transmission electron microscopy (TEM) Fourier transform infrared (FT-IR) and photoluminescence (PL) techniques. The particle size of the nanoparticles estimated by XRD was in good agreement with the particle size obtained by TEM analysis (4-5nm). It was also found that the prepared nanoporous NiO show very good activity for photodegredation of dye organic pollutants such as Congo red (91%) during 1.5 hours.
Synthesis and characterization of brush-like ZnO nanorods using albumen as biotemplate
Nouroozi, Fatemeh;Farzaneh, Faezeh;
Journal of the Brazilian Chemical Society , 2011, DOI: 10.1590/S0103-50532011000300011
Abstract: crystalline zno nanorods with wurtzite-like structure and average diameter of 90 nm and length >1 μm, was prepared by calcination (700 oc) of a zn(ii)/albumen hybrid obtained by sol-gel method, by the reaction of zn(ii) acetate and egg white (albumen), in aqueous solution. the material was characterized by powder x-ray diffraction (xrd), scanning electron (sem) and transmission electron microscopy (tem), thermogravimetric analysis (tga/dta), n2 adsorption/desorption (bet method), ft-ir and photoluminescence (pl) spectroscopy. the surface area was determined to be 6.91 m2 g-1 by bet method. the tga/dta thermal events were consistent with the decomposition of albumen at 300 oc and final formation of zno at 578.5 oc. the results showed that albumen act as template playing essential role on defining the formation of zno nanorods with brush-like morphology.
介孔硅铝分子筛的合成、表征及其作为固体酸催化苯酚与1-辛烯的烷基化反应
Zahra MEHRABAN,Faezeh FARZANEH,Mehdi GHANDI,Alireza ABBASI
催化学报 , 2007,
Abstract: ?以异丙醇铝、硅酸四乙酯和十六烷基三甲基溴化胺为原料,以乙酰丙酮为螯合剂,采用溶胶-凝胶法合成了硅铝比分别为25,50,100和150的介孔硅铝分子筛,并用其催化苯酚与1-辛烯的液相烷基化反应.X射线衍射、N2吸附、高分辨透射电镜及27Al核磁共振光谱表征结果表明,该介孔分子筛具有蠕虫状骨架结构.在160℃时,硅铝比为25的介孔硅铝分子筛催化剂上苯酚可以完全转化为单烷基苯酚.
Government Involvement in Corporate Debt Restructuring: Case Studies from the Great Recession  [PDF]
David A. Grigorian, Faezeh Raei
Modern Economy (ME) , 2013, DOI: 10.4236/me.2013.43019
Abstract:

The paper examines recent episodes of government involvement in corporate debt restructurings. It argues that corporate debt restructuring is an important step toward recovery from a financial crisis. Due to interlinkages between the balance sheets of corporations and the financial sector, without an effective corporate debt restructuring, bank lending is likely to remain constrained. We then discuss the rationale for, and modalities of, the state intervention in corporate debt workouts through reviewing six countries with large scale corporate debt workouts. Case studies reveal that the costs of corporate sector rescue are significant and in several cases on par with the costs of financial sector support. The paper sheds light on the importance of contingent liabilities and associated risks to government balance sheet from the corporate debt side and draws conclusions that point to the need for improved surveillance and governance going forward.

Personalization: An emerging direction for tackling the web searching barriers faced by teachers when searching for educational resources
Faezeh Seyedarabi
Webology , 2011,
Abstract: This paper reviews the efficiency of web searching by teachers in the 21st century. The aim of this paper is to highlight web personalization as a perceived solution to the many barriers faced by web users and in particular the teachers in their educational web searching. Hence, research on searching requirements and problems of web users as well as the practical use of some educational search engines will be discussed. To make web searching easier for all teachers and in particular those in the UK, researchers are recommended to explore future information requirements and the search behaviors of teachers. This should enable individual teachers to personalize their search for finding online teaching resources and also the researchers, to design and develop a model of a relevant educational software design.
Doing a Literature Search: A Comprehensive Guide for the Social Sciences
Faezeh Seyedarabi
Educate~ , 2008,
Abstract:
Writing the Wining Thesis or Dissertation: A Step-by-Step Guide
Faezeh Seyedarabi
Educate~ , 2009,
Abstract:
Does Exposure to Noise Lead to Decreased Regulatory Abilities, and Increased Aggression?  [PDF]
Farzaneh Pahlavan, Melana Arouss
Journal of Behavioral and Brain Science (JBBS) , 2016, DOI: 10.4236/jbbs.2016.61007
Abstract: Recent advances in the study of affective-cognitive regulation of aggressive behavior suggest positive correlations between poor executive capacities (ECF) and negative reactivity. If the global assumption is correct what are the likely implications of predicted relation? The central issue in present research is to verify this assumption and examine how situational characteristics can alter executive performance in adults experiencing Civil War (Syrians students living in their country or in a host country) and adults experiencing peaceful life (French students) to explore some of the consequences of those modifications for aggressive and anxious tendencies. Precisely, we expect the positive correlations between poor executive performances and high dispositional as well situational aggressive and anxious tendencies, specifically for adults exposed to warfare. In order to assess executive capacities and dispositional as well as situational aggressive and anxious tendencies, during one pilot and two comparative studies [pilot study: N = 60 female French students; first comparative study: N = 60 French and N = 60 Syrian students of both sexes (50%); second comparative study: N = 60 Syrian students of both sexes (50%) living in France] right-handed French/Arabic-speakers participants complete twice, before and after completion executive tasks (standard neuropsychological tests) under different experimental conditions (Aversive/Neutral condition), a series of aggression and anxiety questionnaires. The results provide evidence of a dispositional relationship between poor executive functioning and negative reactivity, and extend it to situational level. For all participants, it shows that increases in impulsiveness (negative emotionality and aggressive choices) due to an aversive noise (80 db) are concomitant with an inability to focus individuals’ attention on ongoing tasks, specifically in those living directly or indirectly stressful life-event.
A Tree Based Data Aggregation Scheme for Wireless Sensor Networks Using GA  [PDF]
Ali Norouzi, Faezeh Sadat Babamir, Zeynep Orman
Wireless Sensor Network (WSN) , 2012, DOI: 10.4236/wsn.2012.48028
Abstract: Energy is one of the most important items to determine the network lifetime due to low power energy nodes included in the network. Generally, data aggregation tree concept is used to find an energy efficient solution. However, even the best aggregation tree does not share the load of data packets to the transmitting nodes fairly while it is consuming the lowest possible energy of the network. Therefore, after some rounds, this problem causes to consume the whole energy of some heavily loaded nodes and hence results in with the death of the network. In this paper, by using the Genetic Algorithm (GA), we investigate the energy efficient data collecting spanning trees to find a suitable route which balances the data load throughout the network and thus balances the residual energy in the network in addition to consuming totally low power of the network. Using an algorithm which is able to balance the residual energy among the nodes can help the network to withstand more and consequently extend its own lifetime. In this work, we calculate all possible routes represented by the aggregation trees through the genetic algorithm. GA finds the optimum tree which is able to balance the data load and the energy in the network. Simulation results show that this balancing operation practically increases the network lifetime.
Reduced Graphene Oxide-TiO2 Nanocomposite Facilitated Visible Light Photodegradation of Gaseous Toluene  [PDF]
Reza Ahmadkhaniha, Faezeh Izadpanah, Noushin Rastkari
Journal of Environmental Protection (JEP) , 2017, DOI: 10.4236/jep.2017.85039
Abstract: The photocatalytic degradation of gaseous toluene was investigated on TiO2 nanoparticles coated on reduced graphene oxide. Reduced graphene oxide-TiO2 composite (RGO-TiO2) was synthesized via two step processes. The prepared RGO-TiO2 composite was characterized using SEM, XRD, and UV-visible spectra. A significant increase in light absorption to visible light was observed by RGO-TiO2 compared with that of pure TiO2 nano particles. The photocatalytic degradation efficiency of the RGO-TiO2 composite was much higher than that of the P25 TiO2, 95% and 40% respectively. In our investigated conditions, the initial concentration, flow rate and relative humidity had significant influences on the photocatalytic degradation of gaseous toluene. The most efficiency was recorded at the 0.3 ppm concentration, 1L/min flow rate and 30% relative humidity. We believe that this TiO2 based composite material can be effectively used as a highly active and stable photocatalyst to remove various indoor air pollutants especially gaseous toluene. The photocatalytic degradation efficiencies of toluene increased slowly below 20% relative humidity and then decreased as the relative humidity increased further. The main reason of enhanced photocatalytic property might be the strong electron transfer ability, and the increased adsorption capacity of RGO sheets in the composites as well as the retarded charge recombination rate contributed by the energy level of the two materials. We believe that this TiO2 based composite material can be effectively used as a highly active and stable photocatalyst to remove various gaseous pollutants.
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