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Sensing behavior of BN nanosheet toward nitrous oxide: A DFT study

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Chinese Chemical Letters 2015年第8期26卷 1042-1045页

作者： Marjaneh Samadizadeh Ali Ahmadi Peyghan somayeh F.Rastegar Department of Chemistry Islamic Azad University Central Tehran Branch Young Researchers and Elite Club Central Tehran Branch Islamic Azad University

In order to develop a sensor for the detection of toxic N2O molecules, the interaction of pristine and Aldoped BN nanosheets with an N2O molecule was investigated using density functional theory calculations. It was found that unlike the pristine sheet, the Al-doped sheet can effectively interact with the N2O molecule so that its electronic properties and conductivity are dramatically changed. We believe that replacing a B atom of the BN sheet with an Al atom may be a good strategy for improving the sensitivity of these nanosheets toward N2O, which cannot be trapped and detected by the pristine sheet.

关键词： toward sheet trapped reserved unlike interact dramatically doping Wales adsorbed

对乙酞氨基酚和色氨酸存在下采用改进的碳纳米管糊电极伏安法测定抗坏血酸(英文)

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催化学报 2013年第6期34卷 1098-1104页

作者： Hadi BEITOLLAHI somayeh MOHAMMADI Environment Department Institute of Science and High Technology and Environmental SciencesGraduate University of Advanced TechnologyKermanIran Department of Chemistry Payame Noor University19395‐4697TehranIran

A carbon paste electrode (CPE) modified with carbon nanotubes and 5‐amino‐3',4'‐dimethyl‐ bi‐ phenyl‐2‐ol (5ADB) is prepared. Under the optimum pH of 7.0, the oxidation of ascorbic acid (AA) on the modified CPE occurs at a potential about 280 mV less positive than that on the unmodified CPE. Some kinetic and thermodynamic parameters for electrocatalytic oxidation of AA, including electron transfer coefficient (α = 0.58) and diffusion coefficient (D = 2.2 × 10-6 cm2/s), are also determined. AA, acetaminophen (AC), and tryptophan (TRP) were detected simultaneously using the modified CPE. The peak potentials recorded using the modified CPE in phosphate‐buffered solution at pH 7.0 were 265, 465, and 780 mV for AA, AC, and TRP, respectively. The modified CPE was successfully used to determine the concentrations of AA, AC, and TRP in real samples.

关键词： Ascorbic acid Acetaminophen Tryptophan Carbon nanotube paste electrode Electrocatalysis

Lighting preferences in office spaces concerning the indoor thermal environment

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Frontiers of Architectural Research 2021年第3期10卷 639-651页

作者： Maryam Fakhari Rima Fayaz somayeh Asadi Energy and Architecture Section Department of ArchitectureUniversity of ArtTehranIran The Pennsylvania State University University ParkPAUSA

The accurate prediction of the visual comfort zone in an indoor environment is difficult as it depends on many *** is especially the case for large compact urban areas in which the density and shadow from neighboring buildings can limit the accessible daylighting in indoor *** paper investigates the satisfaction range for illuminance regarding indoor air temperature in office buildings and the significant parameters affecting this range in six office buildings in Tehran,*** comfort has been evaluated by a subjective survey(509 total responses)and field *** questionnaires were filled out in 146 and 109 rooms in summer and winter,*** results show that the illuminance should not be less than 550 lx,while illuminance between 600 and 650 lx provides the highest satisfaction *** satisfaction with lighting level is affected by individual parameters such as age,type of activity,and environmental parameters such as window orientation,external obscurations,and season.A relationship was observed between lighting level satisfaction and thermal condition acceptance,and the overall comfort depends more on thermal conditions than the lighting level.

关键词： Lighting preferences Daylighting Artificial lighting Illumination comfort

Robust Authentication and Session Key Agreement Protocol for Satellite Communications

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Computers, Materials & Continua 2022年第6期71卷 5891-5910页

作者： somayeh Soltani Seyed Amin Hosseini Seno Juli Rejito Rahmat Budiarto Department of Computer Engineering Ferdowsi University of MashhadMashhad***Iran Faculty of Mathematics and Science Universitas PadjadjaranJatinangor45363Indonesia Faculty of Computer Science Universitas Mercu BuanaJakarta11650Indonesia

Satellite networks are recognized as the most essential communication infrastructures in the world today,which complement land networks and provide valuable services for their *** coverage and service stability of these networks have increased their *** eavesdropping and active intrusion in satellite communications are much easier than in terrestrial networks,securing satellite communications is *** far,several protocols have been proposed for authentication and key exchange of satellite communications,but none of them fullymeet the security *** this paper,we examine one of these protocols and identify its security ***,we propose a robust and secure authentication and session key agreement protocol using the elliptic curve cryptography(ECC).We show that the proposed protocol meets common security requirements and is resistant to known security ***,we prove that the proposed scheme satisfies the security features using the Automated Validation of Internet Security Protocols and Applications(AVISPA)formal verification tool and On-the fly Model-Checker(OFMC)and ATtack SEarcher(ATSE)model *** have also proved the security of the session key exchange of our protocol using theReal orRandom(RoR)***,the comparison of our scheme with similar methods shows its superiority.

关键词： Satellite communications authentication session key agreement secure communication security protocols formal verification

KF-Melamine Formaldehyde Resin （KF-MFR） as a Versatile and Efficient Heterogeneous Reagent for Aldol Condensation of Aldehydes and Ketones under Microwave Irradiation

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Chinese Journal of Chemistry 2011年第6期29卷 1221-1226页

作者： Rezaie, Ramin Heidary, Mohammad Soltani Rad, Mohammad Navid Behrouz, somayeh Department of Chemistry Islamic Azad University Firouzabad Branch Iran Department of Chemistry Faculty of Basic Sciences Shiraz University of Technology Shiraz 71555-313 Iran

KF-Melamine formaldehyde resin （KF-MFR） was demonstrated to be a highly efficient heterogenious catalyst for cross-aldol condensation under microwave irradiation. In this synthesis, various aldehydes and ketones were condensed together in the presence of supported KF on melamine-formaldehyde resin to afford different chalcone derivatives in good to excellent yields. KF-MFR proved to have unique termal and chemical resistance and can be reused for many consecutive runs without remarkable loss in catalytic activity.

关键词： KF-MFR ketones aromatic aldehydes aldol reaction microwave chemistry

Role of local and urban textures in promoting social interactions of residents and emphasizing living centers theory of Christopher Alexander

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Frontiers of Architectural Research 2021年第1期10卷 66-78页

作者： somayeh Hatefishojae Seyed Gholamreza Islami Mahmud Rezaei Department of Architecture Islamic Azad UniversityCentral Tehran BranchIran Department of Architecture School of ArchitectureCollege of Fine ArtsUniversity of TehranIran Department of Urban Planning Islamic Azad UniversityCentral Tehran BranchIran

Local and urban squares play a crucial role in the presence and participation of people and in their interaction *** explained the profound geometric relations and discipline in nature,using the concept of life phenomenon theory and living *** believes that humans can revive creatures through creating strong centers and an integrated *** study selects Avicenna tomb square and center of Aqajani Beig neighborhood,*** main research questions include what the role of Alexander's theory of living centers is in promoting the social interaction in local and urban square and which pattern of Alexander’theory mostly affects social interactions in squares and how the individual factors impact social interactions in local and urban *** reveals that patterns of Alexander^theory are efficient in promoting social interactions in local and urban *** factors are not effective in this regard,but strong centers and urban square contradictions are more effective in residents social interactions than that of void spaces and strong ***,planners,and urban designers can apply the results in designing new urban and local squares.

关键词： Social interactions Living centers pattern Local and urban squares Avicenna tomb Aqajani Beig neighborhood Squares in Hamadar

Evaluating the different boundary conditions to simulate airflow and heat transfer in Double-Skin Facade

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Building Simulation 2022年第5期15卷 799-815页

作者： Javad Ahmadi Mohammadjavad Mahdavinejad Olena Kalyanova Larsen Chen Zhang Afsaneh Zarkesh somayeh Asadi Highperformance Architecture Laboratory Department of ArchitectureTarbiat Modares UniversityJalal-e Al Ahmad HighwayNasr bridgeTehranIran Department of Built Environment Faculty of Engineering and ScienceDivision of Architectural EngineeringAalborg UniversityAalborgDenmark Department of Architectural Engineering Pennsylvania State UniversityPA 16801USA

The CFD simulation accuracy mostly depends on the appropriate setting of boundary conditions and numerical simulation *** study shows the influence of two types of boundary condition settings on the CFD simulation results of Double-Skin Facade(DSF)for a specific *** two boundary settings are the constant temperature on the DSF surfaces called Boundary A,and Boundary B is defined via solar radiation using the Discrete Ordinate radiation Model(DOM).The paper verified both the numerical simulations using the experimental *** the numerical results of two types of boundaries with experimental data shows that both cases underestimated the values lower than 5.2 K and 0.1 m/s for the temperature and velocity respectively at the regarded measured *** A gives more accurate temperature prediction results,while Boundary B shows velocity magnitude closer to the measurements in the middle height of the cavity;the average temperature and velocity differences between the two boundary types are 0.6 K and 0.003 m/s respectively which are ***,the selection of boundary conditions depends on study purposes,however,when the DSF is equipped with blinds and if there is not enough data in hand but the exact value of solar irradiation,using the Boundary B approach is suggested;it can provide reasonable results associated with multi-type of thermal boundary conditions at the same ***,if the goal is to investigate the flow pattern in the DSF,Boundary B is argued to perform better than the constant temperature boundary condition.

关键词： Double-Skin Facade boundary conditions thermal performance airflow irradiation

MgO Nanoparticles as a Recyclable Heterogeneous Catalyst for the Synthesis of Polyhydroquinoline Derivatives under Solvent Free Conditions

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Chinese Journal of Chemistry 2011年第8期29卷 1624-1628页

作者： Ranjbar-Karimi, Reza Hashemi-Uderji, somayeh Bazmandegan-Shamili, Alireza Department of Chemistry Faculty of Science Vali-E-Asr University Rafsanjan Islamic Republic of lran PO BOX 77176 lran

Magnesium oxide nanopartticels in average size between 35--120 nm were prepared by sonochemistry method. Synthesis of polyhydroquinoline derivatives using MgO nanoparticles from the reaction of dimedone, benzaldehyde ethyl acetoacetate and ammonium acetate under solvent-free conditions is reported. Easy handling, reusability, thermal stability and non-toxicity of the catalyst make the present protocol as an eco-friendly and economically acceptable method for synthesis of these heterocycles.

关键词： multicomponent reaction cyclization nanoparticle magnesium oxide polyhydroquinoline dihydropyridines aldehyde

Effects of L-arginine supplementation on glycemic profile: Evidence from a systematic review and meta-analysis of clinical trials

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Journal of Integrative Medicine 2020年第4期18卷 284-291页

作者： Esmaeil Yousefi Rad Behzad Nazarian somayeh Saboori Ebrahim Falahi Azita Hekmatdoost Nutritional Health Research Center Lorestan University of Medical SciencesKhorramabad ***Iran Student Research Committee Lorestan University of Medical SciencesKhorramabad ***Iran Department of Clinical Nutrition and Dietetics Faculty of Nutrition and Food TechnologyNational Nutrition and Food TechnologyResearch InstituteShahid Beheshti University of Medical SciencesTehran ***Iran Division of Gastroenterology Hepatology and NutritionBritish Columbia’s Children’s Hospital and Child and Family Research Institutethe University of British ColumbiaBritish Columbia ***Canada

Background:The effects of l-arginine supplementation on indices of glycemic control and the role of many factors influencing this intervention have been controversial in clinical ***:This meta-analysis was performed to assess the effects of l-arginine supplementation on indices of glycemic control,including fasting blood glucose(FBG),hemoglobin A1c(HbA1c),serum insulin and homeostatic model assessment of insulin resistance(HOMA-IR)levels in randomized controlled trials(RCTs).Search strategy:This study conducted a systematic review of RCTs published in PubMed,Scopus,Web of Science,Cochrane Library and Embase,up to 5 May,*** criteria:Studies were included in this meta-analysis if they were RCTs with parallel design and reported sufficient data on participants before and after intervention,and outcomes of glycemic profile parameters in both the arginine supplementation and control *** extraction and analysis:The screening of titles and abstracts was performed independently by two *** articles were considered if they met the study’s inclusion *** quality of included studies was assessed by using the Cochrane Collaboration modified *** 710 articles retrieved in the initial search,only 10 trials were suitable for pooling the effects of arginine supplementation on serum glucose,insulin,HOMA-IR and HbA1c levels,with effect sizes of nine,eight,five and five,***:Pooled random-effect analysis revealed that l-arginine supplementation could significantly decrease FBG level(weighted mean difference[WMD]:3.35 mg/dL;95%confidence interval[CI]=[−6.55,−0.16];P=0.04)and serum insulin level(WMD:−2.19μIU/mL;95%CI=[−3.70,−0.67];P=0.005).However,the effects of l-arginine supplementation on HOMA-IR and HbA1c were not *** of subgroup analysis showed that supplementation with l-arginine could significantly decrease serum insulin levels when the dosage of l-arginine is>6.5 g/d(WMD:−3.49μIU/mL;95%CI=

关键词： l-arginine Fasting blood glucose Insulin resistance Hemoglobin A1c Glycemic profile Meta-analysis