烟用香料无花果提取物的热裂解产物研究

为了评价无花果提取物在卷烟加料中的使用效果,采用热裂解-气相色谱-质谱联用(PY-GC-MS)方法对无花果提取物的热裂解产物进行剖析.结果表明无花果提取物热裂解后产生大量醛类、酮类和呋喃类物质,这些物质是构成卷烟香味的重要成分,能有效改善卷烟吸味.     

Dependence of the Intensity of the Spectral Lines and the Composition of the Sample and the Plasma Parameters of the Unipolar Arc

The investigation was made of the dependence of the intensity of Tl, Ga, Mo, Mg, Mn, Sn, Bi, Ni, Zn, Pt and Au spectral lines and the plasma parameters (temperature T, electron concentration n_e, degree of 6 ionnization α) from concentration of lithium additive.     

On the Question of the Source of the Apokamp

Technical Physics - The object of this work is the apokamp—a new type of plasma jet, which is formed from a bright offshoot emerging at the bending point of a channel of a high-voltage...     

干涉仪系统传递函数测量及影响因素的分析

波前功率谱密度(PSD)被用于评价惯性约束聚变(ICF)激光驱动器光学元件中频段的波前误差。干涉仪对PSD较高空间频率分量的测量存在失真效应,可通过干涉仪系统传递函数(STF)的检测标定来获得真实的波前PSD分布。采用台阶板位相比较法测得大口径菲索相移干涉仪检测系统在透射和反射检测情形下的传递函数。对传递函数测试算法进行了比较分析,明确了干涉仪系统zoom倍率的改变等因素对传递函数测量的影响,为波前PSD的准确检测奠定了基础。     

结合祖国广大人民的需要推动中国物理学的发展——纪念《物理通报》创刊70周年

《物理通报》创刊于1951年,到2021年已经走过了70年的历程.在旧中国,常年战乱,百业凋零,物理学界只有一本创刊于1933年的《中国物理学报》(1953年改称《物理学报》),仅限于发表高校物理学工作者的科学研究成果.新中国的建立,极大地焕发了中国人民的建设和创造热情.随着建设高潮的来临,急需团结全国的物理学工作者,加强物理学教育和广泛普及物理知识,把物理学这个所有理工学科的基础打得更加牢固.因此,中国物理学会通过广泛征求会员的意见,认为有再创办一个物理学刊物的必要,而这个刊物是建立中国物理学基础和推进中国物理学发展的重要措施之一.     

On the problem of the distribution of impurity ions in the F-region of the ionosphere

One-dimensional nonisothermal diffusion in ionospheric plasma (the F-region) is considered in the stationary case. The analysis is carried out for two species of positive ions with allowance for the ionization and recombination processes and the effect of gravity. A system of two coupled equations is derived for the concentrations of the electrons and ions. A transition is made to the case when the ions which determine dissociative recombination are impurity ions. For this case criteria are presented whose fulfilment causes the distribution that has been found to coincide with that obtained by Mange [9] without allowance for photochemical processes.     

Factorization of the scattering matrix and the location of the eigenvalues of the Manakov-Zakharov-Shabat system

We show the scattering matrix associated to the Manakov-Zakharov-Shabat (MZS) system can be factorized as the product of two scattering matrices associated to the Zakharov-Shabat (ZS) system of the Nonlinear Schrödinger (NLS) equation, whenever the initial conditions of the Manakov system have disjoint support. Moreover, if these initial conditions are assumed to be single-lobe, the eigenvalues of the MZS system are purely imaginary.     

地球的扁率对卫星运动的影响

指导出地球引力场的势能,分析了卫星的椭圆轨道旋进的现象。