Chinese physics B = Zhongguo wu li B最新文献

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Electron beam irradiation on novel coronavirus (COVID-19): A Monte-Carlo simulation. 电子束辐照新型冠状病毒（新冠肺炎）：蒙特-卡洛模拟。

Chinese physics B = Zhongguo wu li B Pub Date : 2020-04-01 DOI: 10.1088/1674-1056/ab7dac

Guobao Feng, Lu Liu, Wanzhao Cui, Fang Wang

{"title":"Electron beam irradiation on novel coronavirus (COVID-19): A Monte-Carlo simulation.","authors":"Guobao Feng, Lu Liu, Wanzhao Cui, Fang Wang","doi":"10.1088/1674-1056/ab7dac","DOIUrl":"10.1088/1674-1056/ab7dac","url":null,"abstract":"The novel coronavirus pneumonia triggered by COVID-19 is now raging the whole world. As a rapid and reliable killing COVID-19 method in industry, electron beam irradiation can interact with virus molecules and destroy their activity. With the unexpected appearance and quickly spreading of the virus, it is urgently necessary to figure out the mechanism of electron beam irradiation on COVID-19. In this study, we establish a virus structure and molecule model based on the detected gene sequence of Wuhan patient, and calculate irradiated electron interaction with virus atoms via a Monte Carlo simulation that track each elastic and inelastic collision of all electrons. The characteristics of irradiation damage on COVID-19, atoms' ionizations and electron energy losses are calculated and analyzed with regions. We simulate the different situations of incident electron energy for evaluating the influence of incident energy on virus damage. It is found that under the major protecting of an envelope protein layer, the inner RNA suffers the minimal damage. The damage for a ∼100-nm-diameter virus molecule is not always enhanced by irradiation energy monotonicity, for COVID-19, the irradiation electron energy of the strongest energy loss damage is 2 keV.","PeriodicalId":72585,"journal":{"name":"Chinese physics B = Zhongguo wu li B","volume":"29 4","pages":"048703"},"PeriodicalIF":0.0,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7351116/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10165316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analytically determining frequency and amplitude of spontaneous alpha oscillation in Jansen's neural mass model using the describing function method. 用描述函数法解析确定Jansen神经质量模型中自发α振荡的频率和振幅。

Chinese physics B = Zhongguo wu li B Pub Date : 2018-04-01 DOI: 10.1088/1674-1056/27/4/048701

Yao Xu, Chun-Hui Zhang, Ernst Niebur, Jun-Song Wang

{"title":"Analytically determining frequency and amplitude of spontaneous alpha oscillation in Jansen's neural mass model using the describing function method.","authors":"Yao Xu, Chun-Hui Zhang, Ernst Niebur, Jun-Song Wang","doi":"10.1088/1674-1056/27/4/048701","DOIUrl":"10.1088/1674-1056/27/4/048701","url":null,"abstract":"Spontaneous alpha oscillations are a ubiquitous phenomenon in the brain and play a key role in neural information processing and various cognitive functions. Jansen's neural mass model (NMM) was initially proposed to study the origin of alpha oscillations. Most of previous studies of the spontaneous alpha oscillations in the NMM were conducted using numerical methods. In this study, we aim to propose an analytical approach using the describing function method to elucidate the spontaneous alpha oscillation mechanism in the NMM. First, the sigmoid nonlinear function in the NMM is approximated by its describing function, allowing us to reformulate the NMM and derive its standard form composed of one nonlinear part and one linear part. Second, by conducting a theoretical analysis, we can assess whether or not the spontaneous alpha oscillation would occur in the NMM and, furthermore, accurately determine its amplitude and frequency. The results reveal analytically that the interaction between linearity and nonlinearity of the NMM plays a key role in generating the spontaneous alpha oscillations. Furthermore, strong nonlinearity and large linear strength are required to generate the spontaneous alpha oscillations.","PeriodicalId":72585,"journal":{"name":"Chinese physics B = Zhongguo wu li B","volume":"27 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/1674-1056/27/4/048701","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39254604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Nanoscaled ZnO films used as enhanced substrates for fluorescence detection of dyes. 纳米氧化锌薄膜用作染料荧光检测的增强底物。

Chinese physics B = Zhongguo wu li B Pub Date : 2012-03-01 DOI: 10.1088/1674-1056/21/3/037803

Liu Yan-Song, Yi Fu, Ramachandram Badugu, Joseph R Lakowicz, Xu Xiao-Liang

引用次数: 0