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滚磨光整加工中磨料颗粒堆积角的离散元参数标定 被引量:21
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作者 张荔 李文辉 杨胜强 《中国科技论文》 CAS 北大核心 2016年第16期1821-1825,共5页
针对滚磨加工中所用磨料颗粒的离散元模拟参数具体值难以确定的问题,对现有的参数标定方法进行改进,提出一种在已有正交实验基础上考虑参数间交互作用的参数标定方法。该方法以真实再现磨料颗粒堆积角为研究目的,以磨料颗粒间静摩擦、... 针对滚磨加工中所用磨料颗粒的离散元模拟参数具体值难以确定的问题,对现有的参数标定方法进行改进,提出一种在已有正交实验基础上考虑参数间交互作用的参数标定方法。该方法以真实再现磨料颗粒堆积角为研究目的,以磨料颗粒间静摩擦、滚动摩擦系数以及磨料颗粒与滚筒壁面间静摩擦、滚动摩擦系数为研究参数,通过合理设置各研究参数的不同水平,构建正交试验的交互作用表,可以方便地得到各个摩擦系数的具体大小,从而对各参数对堆积角的显著性进行分析排序。在LL05离心式滚磨光整加工设备所用的Φ5mm磨料颗粒上进行的模拟实验对比结果表明,标定后的摩擦系数组合能够真实再现磨料颗粒堆积角,使磨料颗粒在滚筒内的运动更加真实。 展开更多
关键词 机械制造及其自动化 滚磨光整加工 磨料颗粒 离散元 参数标定
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Unraveling the Quantum Web: The Vortex Theory of Mass and Matter Formation
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作者 Nader Butto 《Journal of High Energy Physics, Gravitation and Cosmology》 CAS 2024年第3期1195-1225,共31页
Mass plays a role in many physical phenomena, including the behavior of subatomic particles, the formation and behavior of stars and galaxies, and gravitational interactions between objects. The density of vacuum, 9.5... Mass plays a role in many physical phenomena, including the behavior of subatomic particles, the formation and behavior of stars and galaxies, and gravitational interactions between objects. The density of vacuum, 9.5 × 10−27 kg/m3, is a crucial parameter in the theory of cosmic inflation and is responsible for the accelerated expansion of the universe in its early stages. This vacuum energy interacts with matter and manifests itself as mass, which can be described as flow and vortex formation using the laws of hydrodynamics. The vortex model of elementary particles, in conjunction with the laws of hydrodynamics, provides an elegant explanation for the origin of mass and the relationship between mass and energy, with profound implications for the behavior of objects at high velocities and strong gravitational fields. The vacuum behaves as a compressible superfluid, thus elementary particles can be described as vortices of the vacuum. The equations of hydrodynamics for vortices can be applied to describe the nature and value of the mass of particles. The implications of understanding the nature of mass are vast and profound. From elucidating the fundamental properties of particles to informing the design of advanced materials and technologies, this knowledge is indispensable. It drives advancements across numerous fields, transforming both our theoretical understanding and practical capabilities. Continued research into the nature of mass promises to unlock further insights, fostering innovation and expanding the frontiers of science and technology. 展开更多
关键词 Dark Energy Dark Matter Vacuum mass Subatomic particles Cosmic Inflation Virtual particles Vortex Formation HYDRODYNAMICS Density
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Chemical characteristics and source apportionment of atmospheric particles during heating period in Harbin, China 被引量:6
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作者 Likun Huang Guangzhi Wang 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2014年第12期2475-2483,共9页
Atmospheric particles(total suspended particles(TSPs); particulate matter(PM) with particle size below 10 μm, PM10; particulate matter with particle size below 2.5 μm, PM2.5)were collected and analyzed during ... Atmospheric particles(total suspended particles(TSPs); particulate matter(PM) with particle size below 10 μm, PM10; particulate matter with particle size below 2.5 μm, PM2.5)were collected and analyzed during heating and non-heating periods in Harbin. The sources of PM10 and PM2.5were identified by the chemical mass balance(CMB) receptor model.Results indicated that PM2.5/TSP was the most prevalent and PM2.5was the main component of PM210, while the presence of PM10–100was relatively weak. SO-4and NO-3concentrations were more significant than other ions during the heating period. As compared with the non-heating period, Mn, Ni, Pb, S, Si, Ti, Zn, As, Ba, Cd, Cr, Fe and K were relatively higher during the heating period. In particular, Mn, Ni, S, Si, Ti, Zn and As in PM2.5were obviously higher during the heating period. Organic carbon(OC) in the heating period was 2–5 times higher than in the non-heating period. Elemental carbon(EC) did not change much. OC/EC ratios were 8–11 during the heating period, which was much higher than in other Chinese cities(OC/EC: 4–6). Results from the CMB indicated that 11 pollution sources were identified, of which traffic, coal combustion, secondary sulfate, secondary nitrate, and secondary organic carbon made the greatest contribution. Before the heating period, dust and petrochemical industry made a larger contribution. In the heating period, coal combustion and secondary sulfate were higher. After the heating period, dust and petrochemical industry were higher. Some hazardous components in PM2.5were higher than in PM10, because PM2.5has a higher ability to absorb toxic substances. Thus PM2.5pollution is more significant regarding human health effects in the heating period. 展开更多
关键词 Atmospheric particles Chemical characteristics Heating period Chemical mass balance
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磷石膏强化氨法CO_2捕集机理与模型 被引量:7
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作者 李季 周加贝 +5 位作者 朱家骅 夏素兰 葛敬 商剑峰 崔文鹏 刘项 《化工学报》 EI CAS CSCD 北大核心 2015年第8期3218-3224,共7页
基于化学活性颗粒强化气液吸收机理,建立了磷石膏悬浮液强化氨法烟气CO2捕集模型。以液膜内量纲一传质距离λ*为特征参数,增强因子2E1/λqβλ/2**=+。用恒温反应器在不同搅拌转速及磷石膏颗粒固含量下实验测定CO2吸收增强因子对模型进... 基于化学活性颗粒强化气液吸收机理,建立了磷石膏悬浮液强化氨法烟气CO2捕集模型。以液膜内量纲一传质距离λ*为特征参数,增强因子2E1/λqβλ/2**=+。用恒温反应器在不同搅拌转速及磷石膏颗粒固含量下实验测定CO2吸收增强因子对模型进行检验,结果表明:随颗粒固含量由5%增加到30%(质量分数),增强因子由1.69增加到2.10;而随搅拌转速从150 r·min-1增加到300 r·min-1,增强因子仅由1.75略增到1.80,表明磷石膏颗粒固含量及溶解速率是影响增强因子的控制性因素。实验结果与模型预测值吻合良好,偏差小于10%。 展开更多
关键词 吸收 增强因子 传质 磷石膏颗粒 CO2矿化
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Mass transfer enhancement and hydrodynamic performance with wire mesh coupling solid particles in bubble column reactor
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作者 Chuanjun Di Jipeng Dong +3 位作者 Fei Gao Guanghui Chen Pan Zhang Jianlong Li 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2024年第3期195-205,共11页
It is of vital significance to investigate mass transfer enhancements for chemical engineering processes.This work focuses on investigating the coupling influence of embedding wire mesh and adding solid particles on b... It is of vital significance to investigate mass transfer enhancements for chemical engineering processes.This work focuses on investigating the coupling influence of embedding wire mesh and adding solid particles on bubble motion and gas-liquid mass transfer process in a bubble column.Particle image velocimetry(PIV)technology was employed to analyze the flow field and bubble motion behavior,and dynamic oxygen absorption technology was used to measure the gas-liquid volumetric mass transfer coefficient(kLa).The effect of embedding wire mesh,adding solid particles,and wire mesh coupling solid particles on the flow characteristic and kLa were analyzed and compared.The results show that the gas-liquid interface area increases by 33%-72%when using the wire mesh coupling solid particles strategy compared to the gas-liquid two-phase flow,which is superior to the other two strengthening methods.Compared with the system without reinforcement,kLa in the bubble column increased by 0.5-1.8 times with wire mesh coupling solid particles method,which is higher than the sum of kLa increases with inserting wire mesh and adding particles,and the coupling reinforcement mechanism for affecting gas-liquid mass transfer process was discussed to provide a new idea for enhancing gas-liquid mass transfer. 展开更多
关键词 Fluid mechanics BUBBLE mass transfer Wire mesh coupling solid particles Particle image velocimetry Hydrodynamics
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悬浮稀疏气力输送的弯管内颗粒群运动微分方程建立及求解分析 被引量:3
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作者 黄远东 吴文权 +1 位作者 张随群 韩百顺 《郑州粮食学院学报》 1997年第1期34-40,共7页
运用气固两相的颗粒群动力学模型,对Weidner理论进行了改进,建立了悬浮稀疏气力输送系统中五种不同空间布置方式的弯管内颗粒群运动微分方程。该运动微分方程可用Euler-cauchy、Runge-kuta、Adams... 运用气固两相的颗粒群动力学模型,对Weidner理论进行了改进,建立了悬浮稀疏气力输送系统中五种不同空间布置方式的弯管内颗粒群运动微分方程。该运动微分方程可用Euler-cauchy、Runge-kuta、Adams、Hamming等方法进行数值求解。用所建立的运动微分方程分别求解了面粉和小麦气力输送系统中的弯道出口颗粒群速度,通过计算结果初步验证了运动微分方程的适用性。 展开更多
关键词 悬浮气力输送 弯管 颗粒群 运动微分方程 粮食
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航空发动机盘类零件滚磨光整加工的模拟 被引量:4
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作者 王秀枝 杨胜强 李文辉 《机械设计与制造》 北大核心 2019年第2期142-145,149,共5页
为探寻航空发动机盘类零件滚磨光整加工一致性的最优方案,进一步提升滚磨光整加工技术在航空发动机盘类零件表面光整加工中应用的有效性,基于离散元法对航空发动机盘类零件分别进行振动式、回转式和离心式三种滚磨光整加工方案的模拟分... 为探寻航空发动机盘类零件滚磨光整加工一致性的最优方案,进一步提升滚磨光整加工技术在航空发动机盘类零件表面光整加工中应用的有效性,基于离散元法对航空发动机盘类零件分别进行振动式、回转式和离心式三种滚磨光整加工方案的模拟分析。对比典型区域工件和磨块颗粒的速度、磨块颗粒与工件的接触力,并通过"Hertz-Mindlin withArchard Wear"模型对盘类零件的磨损情况进行计算对比。通过模拟分析得出,同一种方案中不同区域处工件及磨块颗粒的速度、磨块颗粒对工件的接触力均不相同,与各区域所处于磨块颗粒介质流场中的空间位置有关;不同方案中盘类零件的磨损情况均不相同,与不同方案的加工原理、工艺参数有关;一定条件下,振动式滚磨光整加工较回转式和离心式滚磨光整加工,一致性明显较好。该模拟分析方法可对航空发动机盘类零件加工方案的选择、工艺过程的控制和优化提供参考依据,最终提高加工效率。 展开更多
关键词 滚磨光整加工 盘类零件 磨块颗粒 离散元法 磨损
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Extraction, detection, and profiling of serum biomarkers using designed Fe3O4@SiO2@HA core-shell particles 被引量:2
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作者 Chandrababu Rejeeth Xuechao Pang +8 位作者 Ru Zhang Wei Xu Xuming Sun Bin Liu Jiatao Lou Jingjing Wan Hongchen Gu Wei Yan Kun Qian 《Nano Research》 SCIE EI CAS CSCD 2018年第1期68-79,共12页
Serum biomarkers in the form of proteins (e.g. cluster of differentiation-44 (CD44)) have been demonstrated to have high clinical sensitivity and specificity for disease diagnosis and prognosis. Owing to the high ... Serum biomarkers in the form of proteins (e.g. cluster of differentiation-44 (CD44)) have been demonstrated to have high clinical sensitivity and specificity for disease diagnosis and prognosis. Owing to the high sample complexity and low molecular abundance in serum, the detection and profiling of biomarkers rely on efficient extraction by materials and devices, mostly using immunoassays via antibody-antigen recognition. Antibody-free approaches are promising and need to be developed for real-case applications in serum to address the limitations of antibody-based techniques in terms of robustness, expense, and throughput. In this work, we demonstrated a novel approach using hyaluronic acid (HA)-modified materials/devices for the extraction, detection, and profiling of serum biomarkers via ligand-protein interactions. We constructed Fe304@SiOa@HA particles with different sizes through layer-by-layer assembly and for the first time applied HA-functionalized particles in the facile extraction and sequence identification of CD44 in serum by mass spectrometry. We also first validated HA-CD44 binding through electrochemical sensing using HA- modified electrodes in both standard solutions and diluted serum samples, achieving a detection limit of -0.6 ng/mL and a linear response range from I ng/mL to 10 ~tg/mL. Furthermore, we performed profiling of HA-binding serum proteome, providing a new preliminary benchmark for the construction of future databases, and we investigated selected surface chemistries of particles for the capture of proteins in serum. Our work not only resulted in the development of a platform technology for CD44 extraction/detection and HA-binding proteome identification, but also guided the design of ligand affinity-based approaches for antibody-free analysis of serum biomarkers towards diagnostic applications. 展开更多
关键词 ligand-protein interaction magnetic particles serum biomarkers cluster of differentiation44(CD44) sensors mass spectrometry
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上流式反应器气液相间传质特性的实验研究 被引量:3
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作者 曹俊雅 张绅 +2 位作者 张涛 雍玉梅 杨超 《化工学报》 EI CAS CSCD 北大核心 2019年第10期3914-3923,共10页
上流式反应器设置在固定床渣油加氢反应器前有利于提高渣油原料适用性,延长装置运行时间。实验研究了上流式反应器气液相间传质,采用五齿柱形氧化铝催化剂模拟工业催化剂颗粒,水溶液模拟渣油,空气模拟氢气,采用无氧水物理吸收和亚硫酸... 上流式反应器设置在固定床渣油加氢反应器前有利于提高渣油原料适用性,延长装置运行时间。实验研究了上流式反应器气液相间传质,采用五齿柱形氧化铝催化剂模拟工业催化剂颗粒,水溶液模拟渣油,空气模拟氢气,采用无氧水物理吸收和亚硫酸钠化学吸收的方法,测定了在高气液比的条件下上流式反应器床层气液相间传质特性实验。考察了表观气速、表观液速、填料粒径、内构件、催化剂级配和床层高径比对液相体积传质系数和气液相界比表面积的影响规律。实验数据表明,液相体积传质系数随着气、液速的增大而增大;随填料颗粒增大而减小;在床层内安装合适的内构件或增大反应器高径比,能够促进气液相间传质。基于实验数据拟合了适合上流式反应器液相体积传质系数和气液相界比表面积的经验关联式,拟合误差最大分别为12%和24%;表明所建气液相间传质的经验关联式能更好地预测上流式反应器中的气液相间传质特性。 展开更多
关键词 反应器 传质 渣油加氢 内构件 颗粒级配 反应工程
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TiC/Fe基复合材料的耐磨性能研究 被引量:3
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作者 马雪姣 李毅 +2 位作者 崔海霞 朱鹏霄 张翔 《热加工工艺》 北大核心 2019年第6期121-123,129,共4页
采用真空消失模铸造结合SHS技术制备TiC/Fe基表面复合涂层,研究了涂层的硬度及其耐磨性。在MMW-1型销盘式摩擦磨损试验机上,分别采用TiC涂层和基体材料作为试样,研究了不同载荷条件下两种材料的磨损机理。结果表明:随着载荷的增大,TiC... 采用真空消失模铸造结合SHS技术制备TiC/Fe基表面复合涂层,研究了涂层的硬度及其耐磨性。在MMW-1型销盘式摩擦磨损试验机上,分别采用TiC涂层和基体材料作为试样,研究了不同载荷条件下两种材料的磨损机理。结果表明:随着载荷的增大,TiC涂层和基体材料的磨损量均增加。在不同的载荷条件下,TiC涂层的耐磨性能均优于基体材料的耐磨性能,其磨损机制主要为磨粒磨损。 展开更多
关键词 磨损形貌 磨损量 TIC颗粒 销盘磨损试验
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Gravitational Space-Time Curve Generation via Accelerated Charged Particles
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作者 Edward A. Walker 《Journal of Modern Physics》 2016年第9期863-874,共12页
A force with an acceleration that is equal to multiples greater than the speed of light per unit time is exerted on a cloud of charged particles. The particles are resultantly accelerated to within an infinitesimal fr... A force with an acceleration that is equal to multiples greater than the speed of light per unit time is exerted on a cloud of charged particles. The particles are resultantly accelerated to within an infinitesimal fraction of the speed of light. As the force or acceleration increases, the particles’ velocity asymptotically approaches but never achieves the speed of light obeying relativity. The asymptotic increase in the particles’ velocity toward the speed of light as acceleration increasingly surpasses the speed of light per unit time does not compensate for the momentum value produced on the particles at sub-light velocities. Hence, the particles’ inertial mass value must increase as acceleration increases. This increase in the particles’ inertial mass as the particles are accelerated produce a gravitational field which is believed to occur in the oscillation of quarks achieving velocities close to the speed of light. The increased inertial mass of the density of accelerated charged particles becomes the source mass (or Big “M”) in Newton’s equation for gravitational force. This implies that a space-time curve is generated by the accelerated particles. Thus, it is shown that the acceleration number (or multiple of the speed of light greater than 1 per unit of time) and the number of charged particles in the cloud density are surjectively mapped to points on a differential manifold or space-time curved surface. Two aspects of Einstein’s field equations are used to describe the correspondence between the gravitational field produced by the accelerated particles and the resultant space-time curve. The two aspects are the Schwarzchild metric and the stress energy tensor. Lastly, the possibility of producing a sufficient acceleration or electromagnetic force on the charged particles to produce a gravitational field is shown through the Lorentz force equation. Moreover, it is shown that a sufficient voltage can be generated to produce an acceleration/force on the particles that is multiples greater 展开更多
关键词 Charged particles Accelerated particles Inertial mass Gravitational Force Einstein’s Field Equations Space-Time Manifold Schwardchild Metric Stress Energy Tensor Surjective Mapping Lorentz Force
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Completing the Standard Model with Gravity by General Relativizing Quantum Physics (RQP) (Coupling Spin-2 Gravitons with Spin-0 Particles to Generate Higgs Mass)
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作者 Walter James Christensen Jr. 《Journal of Modern Physics》 2015年第13期1969-1985,共17页
After a straightforward general relativistic calculation on a modified flat-spacetime metric (developed from the fluctuating vacuum energy interacting with a graviton field), a pair of n-valued covariant and contravar... After a straightforward general relativistic calculation on a modified flat-spacetime metric (developed from the fluctuating vacuum energy interacting with a graviton field), a pair of n-valued covariant and contravariant energy momentum tensors emerged analogous to quantized raising and lower operators. Detaching these operators from the general relativistic field equations, and then transporting them to act on extreme spacetimes, these operators were able to generate fundamental particle boson masses. In particular, the operators precisely generated Higgs mass. Then by applying a consistency approach to the gravitational field equations—similar to how Maxwell applied to the electromagnetic ones—it allowed for the coupling of spin-to-mass, further restricting the particle mass to be in precise agreement with CODATA experimental values. Since this is a massless field approach integrated discretely with a massive one, it overcomes various renormalizing difficulties;moreover it solves the mass hierarchal problem of the Standard Model of particle physics, and generates its spin and therefore shows quantum physics to be a subset of General Relativity, just as Einstein had first imagined. 展开更多
关键词 Standard Model Particle PHYSICS GENERAL Relativity Geometric particles Higgs mass Relativized Quantum PHYSICS RQP Graviton Gravitational Lagrangian Consistency Formulation for GRAVITY mass Hierarchal Problem
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Variation Characteristics of Mass Concentration of Inhalable Particles in Qingdao, China 被引量:1
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作者 Zhixuan Wang Xiaomeng Shi +1 位作者 Yan Ma Xiaomin Wei 《Journal of Geoscience and Environment Protection》 2020年第10期192-201,共10页
The geographical condition of Qingdao, China is relatively special;the transport of various inland pollutants, the emissions of marine aerosol and local pollutants will have an impact on the changes of atmospheric aer... The geographical condition of Qingdao, China is relatively special;the transport of various inland pollutants, the emissions of marine aerosol and local pollutants will have an impact on the changes of atmospheric aerosol concentration. By using the stability classification method, trajectory clustering analysis and the NOAA HYSPLIT model, the seasonal distribution characteristics of atmospheric inhalable particulate matter concentration in Qingdao, China and its relationship with meteorological conditions, mixed layer height, and the seasonal characteristics of Qingdao pollutant transport were analyzed. The results show that the variation trends of PM2.5 and PM10 were about the same, and there are obvious seasonal differences, which are high in winter and spring, and low in summer and autumn. The concentration of inhalable particulate matter has a negative correlation with temperature, wind speed and relative humidity. The concentration of inhalable particulate matter is distinct in different relative humidity ranges. When the wind speed is less than 3 - 4 m/s, there are more inhalable particles, while the mass concentration shows obvious reduction with the wind speed more than 4 m/s. There is a significant negative correlation between the mass concentration of pollutants and the daily maximum mixed layer height. The larger the concentration of pollutants, the smaller the thickness of the daily largest mixed layer. Conversely, the smaller the mass concentration of pollutants, the larger the thickness of the daily largest mixed layer. The pollutant transport in Qingdao has obvious seasonal characteristics. The air mass in spring, autumn and winter is mainly medium-long distance transport from Mongolia and southern Russia, and medium-short distance transport from Inner Mongolia and northeast of China. The source of air masses in summer is mainly transported from the eastern and sea areas. 展开更多
关键词 Variation Characteristics mass Concentration Inhalable particles Qingdao
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TiO_2粒子对膜吸收过程中近膜壁面处溶质传质行为的影响 被引量:2
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作者 陈庚 江漪 +1 位作者 张卫东 李江 《北京化工大学学报(自然科学版)》 CAS CSCD 北大核心 2010年第2期6-10,共5页
采用纯CO2-去离子水为实验体系,在板式膜器中研究了孔隙率对膜吸收过程传质效果的影响,并考察了吸收剂搅拌与否对传质性能的影响。结果表明,吸收剂静止时,孔隙率对传质效果影响很小。当吸收剂处于搅拌状态时,传质得到强化,但由于膜壁面... 采用纯CO2-去离子水为实验体系,在板式膜器中研究了孔隙率对膜吸收过程传质效果的影响,并考察了吸收剂搅拌与否对传质性能的影响。结果表明,吸收剂静止时,孔隙率对传质效果影响很小。当吸收剂处于搅拌状态时,传质得到强化,但由于膜壁面处溶质浓度分布情况不同使得传质效果随孔隙率的增加而增大。为改变近膜壁面处溶质浓度的分布情况,利用固体粒子将动量引入液相边界层内,使膜壁面处溶质浓度分布趋于均匀。固相粒子的加入减小了不同孔隙率膜之间的传质效果差异,同时还强化了传质,传质效果提高40%以上,且孔隙率越小强化效果越大。此外,随固含率的增加,强化效果增强,固含率的继续增大,强化效果的增强变得平缓。随着搅拌转速的增加,强化效果减弱。 展开更多
关键词 膜吸收 传质 孔隙率 粒子
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21世纪电子学的若干前沿课题 被引量:2
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作者 黄志洵 《中国工程科学》 2000年第5期21-27,共7页
文章讨论了进入 2 1世纪时物理学和电子学的现状和若干前沿课题 ,涉及真空能、电子负质量、量子势、虚粒子、超弦理论、快子 ,以及EPR思维实验、量子交缠与量子远距传物、量子信息学。
关键词 真空能 负质量 量子势 虚粒子 快子 量子交缠 量子信息学 量子计算 21世纪 电子学 超弦理论
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质点的位移定理 被引量:1
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作者 贺景文 《阜新矿业学院学报》 1990年第2期97-101,共5页
本文在质点系动量守恒定律的基础上推出了质点位移定理。运用该定理可使质点位移的计算简化。
关键词 质点系 位移 定理 动量 质量
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A Phenomenological Model for the Electromagnetic Origin of Mass in Particles, and Its Quantitative Application to the Electron, the Muon, the Proton, and the Neutron
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作者 Osvaldo F. Schilling 《Journal of Modern Physics》 2013年第9期1189-1193,共5页
A simple phenomenological model is developed, which indicates the existence of a direct link between the concept of rest mass of a particle and magnetodynamic energies associated to the formation of the particle. The ... A simple phenomenological model is developed, which indicates the existence of a direct link between the concept of rest mass of a particle and magnetodynamic energies associated to the formation of the particle. The model is based upon the principles of quantization and conservation of flux, well known for their application in superconductivity. The charge of particles is considered as forming vortices of superconducting currents, which we postulate are created by electromagnetic fluctuations from vacuum (or related processes). A new quantization rule gathers the size, the magnetic moment, and the rest mass of the particle and associates these quantities to the integer number of flux quanta that should be stored in the vortices corresponding to each particle. The model is applied to the electron, the muon, the proton, and the neutron. Quantitative consistency with available experimental data for these subatomic particles is obtained. 展开更多
关键词 mass PARTICLE Physics particles Models PARTICLE RADIUS Flux Quantization
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Geometry of the effective Majorana neutrino mass in the 0νββ decay
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作者 刑志忠 周也铃 《Chinese Physics C》 SCIE CAS CSCD 2015年第1期1-6,共6页
The neutrinoless double-beta (0vββ) decay is a unique process used to identify the Majorana nature of massive neutrinos, and its rate depends on the size of the effective Majorana neutrino mass (m)ee- We put for... The neutrinoless double-beta (0vββ) decay is a unique process used to identify the Majorana nature of massive neutrinos, and its rate depends on the size of the effective Majorana neutrino mass (m)ee- We put forward a novel 'coupling-rod' diagram to describe (m)ee in the complex plane, by which the effects of the neutrino mass ordering and CP-violating phases on (m)ee are intuitively understood. We show that this geometric language allows us to easily obtain the maximum and minimum of I(m)eel. It remains usable even if there is a kind of new physics contributing to (m)ee, and it can also be extended to describe the effective Majorana masses (m)eμ, (m)eτ, (m)μμ, (m),μτ and (m)ττ which may appear in some other lepton-number violating processes. 展开更多
关键词 Majorana particles neutrino mass 0vββ decay
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Acceleration of particles in Einstein-Maxwell-dilaton black holes
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作者 毛普健 李然 +1 位作者 贾林玉 任继荣 《Chinese Physics C》 SCIE CAS CSCD 2017年第6期103-109,共7页
It has recently been pointed out that, under certain conditions, the energy of particles accelerated by black holes in the center-of-mass frame can become arbitrarily high. In this paper, we study the collision of two... It has recently been pointed out that, under certain conditions, the energy of particles accelerated by black holes in the center-of-mass frame can become arbitrarily high. In this paper, we study the collision of two particles in the case of four-dimensional charged nonrotating, extremal charged rotating and near-extremal charged rotating Kaluza-Klein black holes as well as the naked singularity case in Einstein-Maxwell-dilaton theory. We find that the center-of-mass energy for a pair of colliding particles is unlimited at the horizon of charged nonrotating Kaluza-Klein black holes, extremal charged rotating Kaluza-Klein black holes and in the naked singularity case. 展开更多
关键词 black hole particles accelerator center-of-mass energy
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Mass, Fine Structure Constant, and the Classification of Elementary Particles by Masses
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作者 Khachatur Kirakosyan 《Journal of Modern Physics》 2021年第7期988-1004,共17页
The equations of motion of physical bodies are given, the characteristic parameters of which become the basis for determining a fundamental property of all matter—“mass”. The equations of motion are characterized b... The equations of motion of physical bodies are given, the characteristic parameters of which become the basis for determining a fundamental property of all matter—“mass”. The equations of motion are characterized by two constants, the derivative of one of which is the fine structure constant. Using these constants, energy scales are compiled, which are the basis for classifying particles by mass. 展开更多
关键词 mass ENERGY STRUCTURE Quantum Numbers Elementary particles
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