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SYNTHESIS AND CHARACTERIZATION OF NICKEL（II） COMPLEXES OF NEW 16-MEMBERED MIXED-DONOR MACROCYCLIC SCHIFF BASE LIGAND POTENTIALLY HEXADENTATE BEARING TWO PENDANT ALCOHOL FUNCTIONS WITH N2O4 SET DONOR ATOM

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SYNTHESIS AND CHARACTERIZATION OF NICKEL（II） COMPLEXES OF ...

Computational analysis of neutronic effects of ThO_2 rods loaded in CANDU 6 fuel assemblies

40th IUPAC Congress

作者： AliAkbar Khandar Masomeh khatamian seyed Abolfazl Hosseini-Yazdi Patrick McArdle seyed amir zarei Department of Inorganic Chemistry Faculty of ChemistryUniversity of TabrizTabriz 51664Iran Department of Inorganic Chemistry Faculty of ChemistryUniversity of TabrizTabriz 51664Iran Department of Inorganic Chemistry Faculty of ChemistryUniversity of TabrizTabriz 51664Iran Depatment Chemistry NUI GalwayGalwayIreland Department of Inorganic Chemistry Faculty of ChemistryUniversity of TabrizTabriz 51664Iran

来源： cnki会议评论

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Nuclear Science and Techniques 2016年第4期27卷 14-20页

作者： seyed Mohammad Mirvakili Zohreh Gholamzadeh seyed amir Hossein Feghhi Reactor Research School Nuclear Science and Technology Research Institute Department of Radiation Application Shahid Beheshti UniversityG.C

Thorium as a suitable fertile with higher natural resources in comparison with uranium resources has been remarkably considered by different nuclear energy user countries in the last decades. Its prominent features such as suitable possibility for power flattening of a nuclear reactor, applicable breeder blanket to produce^(233)U fissile as well as neutron leakage prevention from a nuclear core has caused its application as power flatter, breeder material or other aimed utilizations be evaluated by the researches. In the present study, neutronics of a modeled CANDU 6loaded with Th O_2 and UO_2fuel rods have been computationally studied. The study aimed at reprocessing of burned Th O_2 seeds at CANDU 6 reactor to recover the total produced uranium, which is to be going under another compound fuel cycle. The obtained results showed all the core reactivity coefficients are sufficiently negative. The modeled core 949 GWd burn-up concluding in 99.99 %depletion of^(235)U initial loads. 18.38 kg of^(233) U was produced in the burnt Th O_2 fuel after 1-year burn-up time. In addition, 31.84 kg of^(239) Pu was produced in the UO_2 spent fuel rods after the burn-up time. After a proposed cooling time, about 50.01 kg of^(233)U will be available in the spent Th O_2 fuel.

关键词： CANDU堆中子泄漏燃料组件稳定杆计算核反应堆燃烧时间自然资源

Seismic reliability assessment of a steel moment-resisting frame with two different ductility levels using a cloud analysis approach

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Earthquake Engineering and Engineering Vibration 2019年第1期18卷 171-185页

作者： seyed Bahram Beheshti Aval amir Masoumi Verki Department of Civil Engineering K.N.Toosi University of Technology

A cloud method for generating percentile engineering demand parameter versus intensity measure(EDP-IM) curves of a structure subjected to a set of synthetic ground motions is presented. To this end, an ensemble of synthetic ground motions based on available real ones is generated. This is done by using attenuation relationships, duration and suitable Gutenberg-Richter relations attributed to the considered seismic hazard at a given site by estimating a suitable distribution of magnitude and site to source distance. The study aims to clarify the significance of the duration and frequency content on the seismic performance of structures, which were not considered in developing percentile incremental dynamic analysis(IDA) curves. The collapse probabilities of two steel moment-resisting frames with different ductility levels generated by IDA and the proposed cloud method are compared at different intensity levels. When compared with conventional IDA, the suggested cloud analysis(SCA) methodology with the same run number of dynamic analyses was able to develop response hazard curves that were more consistent with site-specific seismic hazards. Eliminating the need to find many real records by generating synthetic records consistent with site-specific seismic hazards from a few available recorded ground motions is another advantage of using this scheme over the IDA method..

关键词： cloud analysis (CA) multiple-strip analysis (MSA) incremental dynamic analysis (IDA) synthetic ground motions

A model-driven approach to semi-structured database design

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Frontiers of Computer Science 2015年第2期9卷 237-252页

作者： amir JAHANGARD-RAFSANJANI seyed-Hassan MIRIAN-HOSSEINABADI Department of Computer Engineering Sharif University of Technology Tehran 11365-11155 Iran

Recently XML has become a standard for data representation and the preferred method of encoding struc- tured data for exchange over the Internet. Moreover it is fre- quently used as a logical format to store structured and semi- structured data in databases. We propose a model-driven and configurable approach for modeling hierarchical XML data using object role modeling （ORM） as a flat conceptual model. First a non-hierarchical conceptual schema of the problem domain is built using ORM and then different hierarchical views of the conceptual schema or parts of it are specified by the designer using transformation rules. A hierarchical mod- eling notation called H-ORM is proposed to show these hier- archical views and model more complex semi-structured data constructs and constraints. We also propose an algorithm to map hierarchical H-ORM views to XML schema language.

关键词： semi-structured database design object rolemodeling model driven approach

Energy efficiency of small buildings with smart cooling system in the summer

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Frontiers in Energy 2022年第4期16卷 651-660页

作者： Yazdan DANESHVAR Majid SABZEHPARVAR seyed amir Hossein HASHEMI Department of Civil Engineering Qazvin BranchIslamic Azad UniversityQazvin 314199-15195Iran Department of Industrial Engineering Collage of EngineeringKaraj BranchIslamic Azad UniversityKaraj 31499-68111Iran

In this paper,a novel cooling control strategy as part of the smart energy system that can balance thermal comfort against building energy consumption by using the sensing and machine programming technology was *** this goal,a general form of a building was coupled by the smart cooling system(SCS)and the consumption of energy with thermal comfort cooling of persons simulated by using the EnergyPlus software and compared with similar buildings without *** the beginning of the research,using the data from a survey in a randomly selected group of hundreds and by analyzing and verifying the results of the specific relationship between the different groups of people in the statistical society,the body mass index(BMI)and their thermal comfort temperature were obtained,and the sample building was modeled using the EnergyPlus *** result show that if an intelligent ventilation system that can calculate the thermal comfort temperature was used in accordance with the BMI of persons,it can save up to 35%of the cooling load of the building yearly.

关键词： smart home heating and cooling systems saving energy optimal consumption of energy

Performance of Iranian Okra Ecotypes Under Various Accelerated Aging Conditions

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Horticultural Plant Journal 2019年第1期5卷 17-23页

作者： Ghasem Parmoon seyed amir Moosavi seyed Ataollah Siadat Department of Agronomy Faculty of Agriculture University of Mohaghegh Ardabili Department of Plant Production and Genetics Faculty of Agriculture Khuzestan Agricultural Sciences and Natural Resources University

Knowledge of seed quality and preservation of okra seeds is very limited, and the main purpose of this study was to simulate the condition of seed quality loss during storage and the physiological implications, which has led to seed vigor loss. A factorial experiment was conducted with the aim of studying the mechanism of longevity loss of the three endemic okra ecotypes of Iran(Ahwaz, Isfahan, Mashhad) in response to different accelerated aging durations(24, 48, 96, and 192 h). The accelerated aging condition was incubation of seeds to the temperature of 40 °C with 99% humidity. Germination of okra seeds was improved at 24 and 48 h compared to non-aged seeds, while at 192 h of accelerated aging, seed germination(49%) reduced to 50% of its value in 48 h(96.4%). Our results revealed that Iranian okra ecotypes were able to survive accelerated aging conditions up to 48 h. Antioxidant enzyme activity decreased with the increase in aging durations. Among investigated cultivars, seedling vigor of Mashhad ecotypes was the most sensitive to aging treatments. Our results revealed that the seed reservoir use efficiency value was 66%lower when exposed to 192 h of aging compared to the control. The cultivar Isfahan exhibited the minimum reduction of antioxidant activity,and, interestingly, this ecotype was the most aging tolerant.

关键词： Abelmoscul esculentus antioxidant activity deterioration germination protein seed vigor

APG: A novel python-based ArcGIS toolbox to generate absence-datasets for geospatial studies

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Geoscience Frontiers 2021年第6期12卷 90-104页

作者： seyed amir Naghibi Hossein Hashemi Biswajeet Pradhan Department of Water Resources Engineering&Center for Advanced Middle Eastern Studies Lund UniversityLundSweden Centre for Advanced Modelling and Geospatial Information Systems(CAMGIS) Faculty of Engineering and Information TechnologyUniversity of Technology SydneyNew South WalesAustralia Department of Energy and Mineral Resources Engineering Sejong UniversityChoongmu-gwan209 Neungdong-ro Gwangjin-guSeoul 05006Republic of Korea Department of Meteorology King Abdulaziz UniversityP.O.Box 80234Jeddah 21589Saudi Arabia Earth Observation Centre Institute of Climate ChangeUniversiti Kebangsaan MalaysiaBangiSelangorMalaysia

One important step in binary modeling of environmental problems is the generation of absence-datasets that are traditionally generated by random sampling and can undermine the quality of *** solve this problem,this study develops the Absence Point Generation(APG)toolbox which is a Python-based ArcGIS toolbox for automated construction of absence-datasets for geospatial *** APG employs a frequency ratio analysis of four commonly used and important driving factors such as altitude,slope degree,topographic wetness index,and distance from rivers,and considers the presence locations buffer and density layers to define the low potential or susceptibility zones where absence-datasets are *** test the APG toolbox,we applied two benchmark algorithms of random forest(RF)and boosted regression trees(BRT)in a case study to investigate groundwater potential using three absence datasets i.e.,the APG,random,and selection of absence samples(SAS)*** BRT-APG and RF-APG had the area under receiver operating curve(AUC)values of 0.947 and 0.942,while BRT and RF had weaker performances with the SAS and Random *** effect resulted in AUC improvements for BRT and RF by 7.2,and 9.7%from the Random dataset,and AUC improvements for BRT and RF by 6.1,and 5.4%from the SAS dataset,*** APG also impacted the importance of the input factors and the pattern of the groundwater potential maps,which proves the importance of absence points in environmental binary *** proposed APG toolbox could be easily applied in other environmental hazards such as landslides,floods,and gully erosion,and land subsidence.

关键词： Absence-dataset Classification Python Machine learning algorithms GIS Groundwater Hydrogeology

New concept and procedure for reliability assessment of an IEC 61850 based substation and distribution automation considering secondary device faults

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Frontiers in Energy 2015年第4期9卷 387-398页

作者： Hosein HAYATI amir AHADI seyed Mohsen MIRYOUSEFI AVAL Young Researchers and Elite Club Ardabil Branch Islamic AzadUniversity Ardabil 56131-56491 Iran

Smart grid is a power grid consists of extensive monitoring systems which deal with the monitoring of attributes such as current, voltage, power, and energy at distribution transformers, substations transformers, distri- bution switching devices and smart meters. Smart grid with advanced communication technologies can be used for several purposes such as efficiency and reliability improvement. IEC 61850 is the core standard in the smart grid domain for distribution and substation automa- tion. This paper introduces a vision of modem substation and distribution systems using the IEC 61850. Network operators mainly assume that the modem substation and distribution systems based on the IEC 61850 are reliable for a long-time of operation. However, similar to any other systems, the implemented IEC 61850 might fail because of the operational failures or aging failures. This paper proposes a novel method for reliability evaluation of modem substation and distribution systems. A typical IEC 61850 based distribution and substation system is devel- oped and analyzed using the proposed method. The fault tree analysis （FTA） is used to quantify the reliability of the system. The technique is implemented and demonstrated on the Roy Billinton test system （RBTS）. The analysis is further extended on a 400/63 kV substation with a breaker- and-a-half configuration. In addition, the technique proves to be robust under different operations. The results verify the feasibility and applicability of the proposed method.

关键词： IEC 61850 reliability assessment fault treeanalysis

Generating capacity adequacy evaluation of large-scale, grid-connected photovoltaic systems

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Frontiers in Energy 2016年第3期10卷 308-318页

作者： amir AHADI seyed Mohsen MIRYOUSEFI AVAL Hosein HAYATI Young Researchers and Elite Club Ardabil Branch Islamic Azad University Ardabil *** Iran

Large-scale, grid-connected photovoltaic sys- tems have become an essential part of modem electric power distribution systems. In this paper, a novel approach based on the Markov method has been proposed to investigate the effects of large-scale, grid-connected photovoltaic systems on the reliability of bulk power systems. The proposed method serves as an applicable tool to estimate performance （e.g., energy yield and capacity） as well as reliability indices. The Markov method frame- work has been incorporated with the＇ multi-state models to develop energy states of the photovoltaic systems in order to quantify the effects of the photovoltaic systems on the power system adequacy. Such analysis assists planners to make adequate decisions based on the economical expectations as well as to ensure the recovery of the investment costs over time. The failure states of the components of photovoltaic systems have been considered to evaluate the sensitivity analysis and the adequacy indices including loss of load expectation, and expected energy not supplied. Moreover, the impacts of transitions between failures on the reliability calculations as well as on the long- term operation of the photovoltaic systems have been illustrated. Simulation results on the Roy Billinton test system has been shown to illustrate the procedure of the proposed frame work and evaluate the reliability benefits of using large-scale, grid-connected photovoltaic system on the bulk electric power systems. The proposed method can be easily extended to estimate the operating and maintenance costs for the financial planning of the photovoltaic system projects.

关键词： adequacy assessment Markov method large-scale grid-connected photovoltaic(PV) systems long-termoperation