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Effects of electric fields on^(7)Be half-life

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Chinese Physics C 2021年第7期45卷 214-218页

作者： Farshid gholamian Mohammad Mehdi Firoozabadi Reza Sarhaddi Department of Physics Faculty of SciencesUniversity of BirjandBirjandIran

First-principle calculations based on the density functional theory(DFT)method are adopted to investigate the influence of a strong electric field on the^(7)Be ***,electronic structures of Be and BeO are examined in the presence of a homogeneous electric *** electron density at the nucleus is estimated upon the geometry *** computations for the Be metal indicate a 0.02%increase in the decay rate of the^(7)Be nucleus,corresponding to a 0.02%decrease in the^(7)Be half-life,both at 5.14 V/A(0.1 a.u.).Furthermore,it is determined that the decay rate of^(7)Be is not considerably altered up to 3.6 V/Åin the BeO *** results show that the screening energy of the electron can be dependent on the applied electric field ***,we predict variations in the Coulomb potential at the^(7)Be nucleus due to electric field application.

关键词： decay rate change electric field DFT method

Change in^(7)Be half-life in host media

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Chinese Physics C 2021年第6期45卷 138-140页

作者： Farshid gholamian Mohammad Mehdi Firoozabadi Reza Sarhaddi Department of Physics Faculty of SciencesUniversity of BirjandBirjandIran

First-principle calculations within the density functional theory framework are used to study the probability of electron capture for the^(7)Be *** this purpose,electron density at the^(7)Be nucleus is computed in Al,Au,Pd,Pt,and Pb *** results show that the half-life of^(7)Be is changed by implanting^(7)Be in host *** affinity of the media and confinement effects are responsible for the change in the half-life of^(7)Be ***,electric potential at the^(7)Be nucleus is *** show that variations in electric potential are usually consistent with those in electron density at the^(7)Be nucleus.

关键词： decay rate change confinement effect electron affinity effect DFT method

INTERMOLECULAR INTERACTION OF A NEUTRAL POLYMERIC BONDING AGENT CONTAINING N-VINYLPYRROLIDONE UNITS WITH AMMONIUM PERCHLORATE AND KETO-RDX

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Chinese Journal of Polymer Science 2013年第10期31卷 1372-1381页

作者： Forouzan gholamian Mahdi Ansari Mohammad Abdullah Farideh Bataghva Sara Ghariban-Lavasani Department of Chemistry Faculty of Science Malek Ashtar University of Technology

The interaction of a new neutral polymeric bonding agent （NPBA） containing N-Vinylpyrrolidone units with two types of oxidizers （ammonium perchlorate and Keto-RDX） was investigated by X-ray photoelectron spectroscopy （XPS） and Fourier transform infrared spectroscopy （FTIR）. NPBA forms a layer of film on the surface of oxidizers. The paper gives hypothetical mechanisms for improving significantly mechanical properties by addition of the neutral polymeric bonding agent （NPBA）.

关键词： XPS FTIR NPBA K6 AP.

A New Method for Clustering Based on Development of Imperialist Competitive Algorithm

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China Communications 2014年第12期11卷 54-61页

作者： Mohammad Reza Dehghani Zadeh Mohammad Fathian Mohammad Reza gholamian School of Industrial Engineering Iran University of Science and Technology Narmak 16844 Tehran Iran

Clustering is one of the most widely used data mining techniques that can be used to create homogeneous clusters.K-means is one of the popular clustering algorithms that,despite its inherent simplicity,has also some major *** way to resolve these problems and improve the k-means algorithm is the use of evolutionary algorithms in *** this study,the Imperialist Competitive Algorithm(ICA) is developed and then used in the clustering *** of IRIS,Wine and CMC datasets using developed ICA and comparing them with the results of clustering by the original ICA,GA and PSO algorithms,demonstrate the improvement of Imperialist competitive algorithm.

关键词： data mining homogeneous cluster imperialist competitive algorithm

颗粒大小对蔬菜废弃物厌氧发酵过程的影响研究

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中国沼气 2024年第4期42卷 3-9页

作者：李金平张奥博孙永明 Vojislav Novakovic Ehsan gholamian Karkon 甘肃省太阳能与生物质互补多联供系统重点试验室兰州730050 西北低碳城镇支撑技术省部共建协同创新中心兰州730050 兰州理工大学能源与动力工程学院兰州730050 中国科学院广州能源所广州510640 挪威科技大学能源与过程工程系挪威特隆赫姆NO-7491

蔬菜流通环节产生的大量蔬菜废弃物(即尾菜)亟需无害化处理,然而现有尾菜规模化处理采用的“破碎+压榨+厌氧/好氧”处理工艺易出现厌氧发酵酸化问题。为了破解此问题,在分析现有尾菜规模化处理工艺中发现破碎过细是造成厌氧发酵酸化的... 详细信息

蔬菜流通环节产生的大量蔬菜废弃物(即尾菜)亟需无害化处理,然而现有尾菜规模化处理采用的“破碎+压榨+厌氧/好氧”处理工艺易出现厌氧发酵酸化问题。为了破解此问题,在分析现有尾菜规模化处理工艺中发现破碎过细是造成厌氧发酵酸化的主要原因,因以尾菜为主要原料的厌氧发酵,常因为其水解过快,体系内有机酸过度积累出现酸化现象,导致产气失败。为了进一步研究颗粒大小对尾菜厌氧发酵过程的影响,提高其能源利用率,文章选取白菜作为试验底物,比较了高有机负荷下不同颗粒大小白菜(2 cm见方小块、完整叶片、1/4棵)对产沼气性能的影响。结果表明:较小颗粒大小会导致出现酸化现象。颗粒大小为整片和1/4棵条件下累积产气量分别为68.1 L、69.2 L,发酵过程处于稳定状态;颗粒大小为2 cm小块试验组出现酸化产气停止,各基础指标出现停滞或累积现象。试验可为尾菜规模化快速处理提供数据参考。

关键词：蔬菜废弃物处理利用颗粒大小厌氧消化酸抑制