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Magnetic Field Effects on Photoreduction Reaction of 2-Methyl-1,4-Naphthoquinone in Brij 35 Micellar Solution with Additional Radical
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作者 陈家富 薛旋 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2004年第11期1235-1238,共4页
A study was made of magnetic field effects (MFEs) on the photoreduction reaction of 2-methyl-1,4-naphthoqui- none (MNQ) in Brij 35 micellar solution containing 4-lauroylamino-TEMPO (2,2,6,6-tetramethylpiperidine-1-oxy... A study was made of magnetic field effects (MFEs) on the photoreduction reaction of 2-methyl-1,4-naphthoqui- none (MNQ) in Brij 35 micellar solution containing 4-lauroylamino-TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl) radical (L-R) under magnetic fields below 1.75 T by a nanosecond laser flash photolysis technique. The triplet MNQ mainly underwent the hydrogen abstraction from Brij 35 molecule to give a radical pair. The escaped radical yield increased with magnetic fields from 0 to 0.62 T and then saturated from 0.62 to 1.75 T. MFEs for both sys-tems can be explained by the relaxation mechanism. However, it was supposed that additional radical, L-R affected the MFEs mainly through enhancing the spin-spin interactions of radical pairs. The effect of the micelle size on MFEs of the studying system was also discussed. 展开更多
关键词 magnetic field effects micellar solution 2-methyl-1 4-naphthoquinone laser photolysis
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Magnetic field effects on photochemical reaction--III. Mechanistic study of the photodecarboxylation of arylmethyl esters in micellar solutions 被引量:1
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作者 TONG Zhen-He TUNG Chen-Ho YUAN Long-Hua 《Chinese Journal of Chemistry》 SCIE CAS CSCD 1991年第6期552-558,共0页
Photolysis of benzyl phenylacetate (ACO_2A), benzyl p-methylphenylacetate (BCO_2A) and 1-naphthyl phenylacetate (ACO_2Np) in homogeneous and micellar solutions results in products typical of radical coupling reactions... Photolysis of benzyl phenylacetate (ACO_2A), benzyl p-methylphenylacetate (BCO_2A) and 1-naphthyl phenylacetate (ACO_2Np) in homogeneous and micellar solutions results in products typical of radical coupling reactions and loss of carbon dioxide. The cage effects upon direct photolysis of these esters in acetonitrile are significantly greater than zero and those in SDS or HDTBr micellar solutions are even greater. In the triplet sensitization reaction of ACO_2 Np in micellar solutions the cage effects are smaller than those obtained upon direct irradiation. However, the application of a 0.05 or 0.2 T external magnetic field in the photolysis in micellar solutions decreases the cage effects dramatically. All these results suggest that the photoextrusions of carbon dioxide from these esters proceed via radical intermediates, and upon direct photolysis the reactive states for the cleavage re- action involve both singlet and triplet excited states. 展开更多
关键词 In Mechanistic study of the photodecarboxylation of arylmethyl esters in micellar solutions magnetic field effects on photochemical reaction III
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Real Magnetic Poles (Magnetic Charges) in the Physics of Magnetism, Gravitation and Levitation 被引量:1
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作者 Robert A. Sizov 《Journal of Modern Physics》 2015年第8期1013-1022,共10页
Experiments executed by author of the present article (period 1968-1992) showed that the magnetic spinorial particles (magnetic charges) are real structural components of atoms and substance and are immediate sources ... Experiments executed by author of the present article (period 1968-1992) showed that the magnetic spinorial particles (magnetic charges) are real structural components of atoms and substance and are immediate sources of all magnetic fields in Nature. Joint orbital currents of electric and magnetic charges within atomic shells are the natural sources of gravitational field which is a vortical electromagnetic field. The vector nature of the gravitational field, in essence, is analogous to the vortical magnetic field that allows entering in the physical representations of such States of the gravitational field as paragravitation and ferrogravitation. Physical masses (atoms, substance, etc.), which emit ferrogravitational field, are repelled by sources paragravitational field, for example, from Earth. It is a manifestation of the effect of levitation, which was discovered by the author of this article. The forces of the technical levitation, which are formed by technical ferrogravitational fields, can be used in transport, lifting and space technology, energy and many other areas of human activity. The main reason that the real magnetic charges were “buried alive” in modern theoretical physics is the conditions of their confinement in the structures of atoms and substance, which is radically different from the confinement of electrons. Very negative role is played here by erroneous electromagnetic concept Maxwell, in which the magnetic field was officially deprived of their own source: magnetic pole or magnetic charge. 展开更多
关键词 magnetic Spinorial Particles (Spinors and Antispinors) Magneton and Antimagneton Bispinor Physical Mass Vortical Electromagnetic (gravitational) field Paragravitation and Ferrogravitation LEVITATION effect
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Real Magnetic Charges in the Substance, Ferrogravitation and Technical Levitation 被引量:1
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作者 Robert A. Sizov 《Journal of Modern Physics》 2015年第11期1591-1561,共11页
Experimental and theoretical investigations by author of the present article (period: 1968-2013) have shown that the magnetic spinor particles (magnetic charges) are real structural components of atoms and substance a... Experimental and theoretical investigations by author of the present article (period: 1968-2013) have shown that the magnetic spinor particles (magnetic charges) are real structural components of atoms and substance and are immediate sources of all magnetic fields in Nature. Joint orbital currents of electric and magnetic charges within atomic shells are the natural sources of gravitational field which is a vortex electromagnetic field. The vector character of the elementary gravitational field is similar to the vortex magnetic field that allows entering in the submission of such fundamental states of the gravitational field, as a paragravitation and ferrogravitation. Physical masses (atoms, nucleons, substance, etc.), which emit ferrogravitational field are repelled off from sources paragravitational field, for example, from Earth. It is a manifestation of the effect of levitation, which was discovered by the author of this article. Technical forces levitation, that induced by technical ferrogravitational fields, could be used in transport, lifting and space technology, power engineering and many other areas of human activity. The main reasons that real magnetic charges are “buried alive” in modern theoretical notions are as physics their of confinement in the structures of atoms and substance which are radically different from the confinement of electrons so and fallacious electromagnetic concept Maxwell in which the magnetic field is by mistake deprived of its own source of the magnetic pole or of the magnetic charge. 展开更多
关键词 magnetic SPINOR Particles (Spinors and Antispinors) Magneton and Antimagneton Bispinor Physical Mass Vortical Electromagnetic (gravitational) field Paragravitation and Ferrogravitation LEVITATION effect
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面贴式异向旋转双转子永磁电机的磁场解析计算 被引量:24
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作者 张凤阁 陈进华 +1 位作者 刘光伟 张武 《电工技术学报》 EI CSCD 北大核心 2011年第12期28-36,共9页
采用解析法分析了面贴式异向旋转双转子永磁电机的空载磁场分布。模型在二维极坐标下建立,考虑了径向/平行充磁,内永磁/外永磁转子结构。为了准确计算磁场分布和齿槽转矩,不同于之前的引入相对磁导函数或复数保角变换方法,而是直接利用... 采用解析法分析了面贴式异向旋转双转子永磁电机的空载磁场分布。模型在二维极坐标下建立,考虑了径向/平行充磁,内永磁/外永磁转子结构。为了准确计算磁场分布和齿槽转矩,不同于之前的引入相对磁导函数或复数保角变换方法,而是直接利用边界条件来考虑定子槽的影响。在气隙和槽区域内采用拉普拉斯方程,在永磁体区域采用泊松方程求解,并且认为永磁体的相对磁导率是不为1的常数。通过傅里叶变换和分离变量法得出各部分磁通密度的径向、切向分量。通过转子转动,得出槽口区域磁场变化,同时准确估计该种电机的齿槽转矩和反感电动势。与有限元法计算结果比较,两者吻合很好,肯定了该解析法的计算精度。 展开更多
关键词 解析法 双转子 永磁电机 槽影响 磁场 齿槽转矩
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磁场强化溶液蒸发的效果及机理 被引量:7
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作者 马伟 马文骥 +1 位作者 马荣骏 申殿邦 《中国有色金属学报》 EI CAS CSCD 北大核心 1998年第3期502-506,共5页
磁场效应对含砷溶液蒸发过程实验表明,磁场促进溶液的蒸发,不同的磁场作用参数和不同的溶液成分,影响效果不同,溶液蒸发效率提高5%~10%,平均效率提高达8%以上。通过液气两相平衡、液体过热、成核和挥发等过程的分析,认为... 磁场效应对含砷溶液蒸发过程实验表明,磁场促进溶液的蒸发,不同的磁场作用参数和不同的溶液成分,影响效果不同,溶液蒸发效率提高5%~10%,平均效率提高达8%以上。通过液气两相平衡、液体过热、成核和挥发等过程的分析,认为磁场强化溶液蒸发的作用机理是磁场具有“磁致表面形核效应”。实验表明磁场降低溶液的表面张力(即单位面积自由能)3.5%~8.3%,从而降低了成核势垒,促进了液体内部的能量交换。增加了汽化成核几率,使溶液蒸发过程得以强化。 展开更多
关键词 磁场效应 溶液蒸发 表面成核 含砷废水
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磁场处理强化水溶液蒸发效能的研究 被引量:4
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作者 郑必胜 郭祀远 +1 位作者 李琳 蔡妙颜 《华南理工大学学报(自然科学版)》 EI CAS CSCD 1995年第7期20-25,共6页
溶液经过磁处理后,结构发生变化,从而对其物理及化学性质产生影响。本文研究了溶液(水及糖液等)经过磁场处理后其传热特性的变化,探讨磁处理过程的作用规律,为磁处理技术能够更好地应用提供必要的实验基础。
关键词 磁场效应 蒸发 磁场处理 水溶液
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等离子弧堆焊层的组织与性能的磁场控制 被引量:17
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作者 刘政军 陈宏 +1 位作者 刘臣 刘铎 《焊接学报》 EI CAS CSCD 北大核心 2005年第8期16-18,22,共4页
在对两种铁基合金(Fe5和Fe3)进行等离子弧堆焊过程中加入纵向直流磁场来控制堆焊层的硬质相形态及分布,并对两种堆焊层进行了硬度、磨损试验,显微组织及X射线衍射分析。并对两种粉末的堆焊层组织性能进行了研究。结果表明,施加磁场的堆... 在对两种铁基合金(Fe5和Fe3)进行等离子弧堆焊过程中加入纵向直流磁场来控制堆焊层的硬质相形态及分布,并对两种堆焊层进行了硬度、磨损试验,显微组织及X射线衍射分析。并对两种粉末的堆焊层组织性能进行了研究。结果表明,施加磁场的堆焊层要比无磁场作用的堆焊层硬度高、耐磨性好;磁场电流为3A时的堆焊层性能最佳;合金堆焊层的显微组织α、γ固溶体被充分细化,并获得了理想的硬质相Cr7C3、CrB等。 展开更多
关键词 等离子弧堆焊 磁场 硬质相
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电流比较仪多层小气隙磁屏蔽磁场的解析解 被引量:3
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作者 郑天宇 陈德智 +2 位作者 王雪 胡浩亮 李冬 《电工技术学报》 EI CSCD 北大核心 2017年第21期73-80,共8页
磁屏蔽磁场的分析是实现高精度电流比较仪优化设计的关键,然而磁屏蔽气隙结构复杂,有限元法计算量大、计算精度难以满足要求。考虑磁屏蔽分层结构以及一次电流偏心和外部磁场干扰对磁场分布的影响,提出一个二维简化模型,利用极坐标系下P... 磁屏蔽磁场的分析是实现高精度电流比较仪优化设计的关键,然而磁屏蔽气隙结构复杂,有限元法计算量大、计算精度难以满足要求。考虑磁屏蔽分层结构以及一次电流偏心和外部磁场干扰对磁场分布的影响,提出一个二维简化模型,利用极坐标系下Poisson方程解的正交函数展开式推导磁场的解析解,并利用有限元法验证解析解的正确性。通过二维解析模型与三维实际问题有限元计算结果的对比,发现两者具有简单的比例关系,且该比例关系不依赖于干扰源的位置,因此可用二维解析模型对三维实际磁屏蔽结构做出快速有效的评估。对坡莫合金的B-H曲线进行拟合,以线性近似下的磁场解析解为基础,利用安匝平衡时检测线圈的感应电压导出电流检测的误差估算公式,作为磁屏蔽效能分析的定量指标。对不同磁屏蔽结构的分析表明,双层结构比同样尺寸单层结构的屏蔽效能可提高近三个数量级。最后通过实验验证了解析表达式分析实际问题的有效性。 展开更多
关键词 电流比较仪 磁屏蔽 磁场分析 解析解 屏蔽效能 误差评估
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静态磁场的Einstein-Maxwell方程严格解及其引力效应
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作者 符立亚 郭鸿钧 《长沙铁道学院学报》 CSCD 1996年第3期96-100,共5页
求解Einstein-Maxwell方程得到静态轴对称磁场的严格解,包括磁荷、磁偶极矩及磁多极矩的磁场以及由它们产生的引力场的度规.磁场具有特殊的引力效应:质量为m的任何低速粒子在磁场中将受到一个沿磁感应线方向的等效... 求解Einstein-Maxwell方程得到静态轴对称磁场的严格解,包括磁荷、磁偶极矩及磁多极矩的磁场以及由它们产生的引力场的度规.磁场具有特殊的引力效应:质量为m的任何低速粒子在磁场中将受到一个沿磁感应线方向的等效“牛顿力”F=mGB. 展开更多
关键词 磁场 引力效应 严格解 EM方程
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Theory of Electromagnetism and Gravity —Modeling Earth as a Rotating Solenoid Coil
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作者 Greg Poole 《Journal of High Energy Physics, Gravitation and Cosmology》 2017年第4期663-692,共30页
Presented in this manuscript are conventional electrical engineering tools to model the earth as a rotating electrical machine. Calculations using known parameters of the earth and measured field data has resulted in ... Presented in this manuscript are conventional electrical engineering tools to model the earth as a rotating electrical machine. Calculations using known parameters of the earth and measured field data has resulted in new understanding of the earth’s electrical system and gyroscopic rotation. The material makeup of the inner earth is better understood based on derived permeability and permittivity constants. The planet has been modeled as simple coils and then as a parallel impedance circuit which has led to fundamental insight into planetary speed control and RLC combination for Schumann Resonance of 7.83 Hz. Torque and Voltage Constants and the inverse Speed Constant are calculated using three methods and all compare favorably with Newton’s Gravitational Constant. A helical resonator is referenced and Schumann’s Resonant ideal frequency is calculated and compared with others idealism. A new theory of gravity based on particle velocity selector at the poles is postulated. Two equations are presented as the needed links between Faraday’s electromagnetism and Newtonian physics. Acceleration and Deceleration of earth is explained as a centripetal governor. A new equation for planetary attraction and the attraction of atomic matter is theorized. Rotation of the earth’s electrical coil is explained in terms of the Richardson effect. Electric power transfer from the sun to the planets is proposed via Flux Transfer Events. The impact of this evolving science of electromagnetic modeling of planets will be magnified as the theory is proven, and found to be useful for future generations of engineers and scientists who seek to discover our world and other planets. 展开更多
关键词 Ampere Biot-Savart CENTRIPETAL Acceleration CENTRIPETAL GOVERNOR Dynamo EARTH Einstein-de Haas effect Electric field Electromagnetism Flux Transfer Events GOVERNOR Control GRAVITY gravitational CONSTANT Helical Resonator Lenz Law Lorentz Lightning magnetic field Motor CONSTANT Parallel Impedance Planet SPEED Control Schumann Resonance Richardson effect Solenoid SPEED CONSTANT Solar Power System Torque CONSTANT Velocity Selector Voltage CONSTANT
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Einstein—Maxwell方程的新解
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作者 卢卯旺 黄小益 《郴州师专学报》 1998年第1期40-42,共3页
本文给出了一种新的生成技术,建立了一个新的生成解定理。根据此定理。可以由任何一个已知的静态真空解生成一个新的电磁真空解,并从Schwarzcdild解出发生成了一新解。
关键词 引力场方程 严格解 E-M方程 广义相对论
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