秩为r的本原超图的指数集(英文)

本文研究了超图的本原性质.运用图论方法,得到了具有秩r(≥3)的所有n阶本原有向超图的指数集,并刻划了其极超图.     

高阶Chen-Lee-Liu方程在半直线上的初边值问题

该文运用Fokas方法分析了高阶Chen-Lee-Liu方程在半直线上的初边值问题,证明了高阶Chen-Lee-Liu方程初边值问题的解可以用复λ平面上的矩阵Riemann-Hilbert问题的形式解唯一表示.     

Kinetic modeling of inactivation of natural microbiota and Escherichia coli on cherry tomato treated with fixed multi-frequency sonication

The suitability of some non-linear kinetic models (Weibull {with or without tail}, Log-linear, Log-linear shoulder {with or without tail}, Biphasic linear, Logistic, Multi-target and Single-target models) were evaluated to determine the inactivation kinetics of inoculated E. coli, and natural microbiota (i.e. mesophilic aerobic bacteria, and mold and yeast) on cherry tomato treated with fixed multi-frequency ultrasound. Almost all the studied model fitted well (R² ≥ 0.9) for the inactivation kinetics; however, the Weibull, Log-linear shoulder, and Biphasic linear model showed the highest statistical parameters (0.9 ≤ adj. R² ≤ 0.99 and smallest RMSE and SSE values). All the three models could be used to compare the kinetic behavior of E. coli and the first two models for the kinetic behavior of mesophilic aerobic bacteria and mold and yeast during sonication treatment. Two distinctive inactivation curves were obtained for the mono-frequency and the multi-frequency (dual and tri-frequency) for all the microbial inactivation. The remarkable results obtained for dual and tri-frequency sonication shows to be an effective and promising alternative to the traditional microbial inactivation techniques and the common practice of using ultrasound with other sanitizing methods.     

一类由从属关系定义的m-折对称双单叶函数的系数估计及Fekte-Szego不等式

本文研究了一类由从属关系定义的$m$-折对称双单叶函数的系数估计及Fekte-Szego不等式,所得结果改进或推广了已有部分作者的结论.     

The moment of inertia of the proto neutron star PSR J0348+0432 under neutrino trapped

The moment of inertia of the proto neutron star PSR J0348+0432 is studied in the framework of relativistic mean field theory under neutrino trapped. We find that the temperature of the PNS PSR J0348+0432 increases with the increase of the baryon number density and at the center of the star it is in the range T_c = 41.662–45.685 MeV. Corresponding to the observation mass 1.97–2.05 M_⊙, the radius of the NS PSR J0348+0432 is in the range 12.948–12.16 km whereas that of the PNS PSR J0348+0432 is in the range 14.46–13.561 km. The radius of the PNS PSR J0348+0432 has increased by 11.7%–11.5% compared with that of the NS PSR J0348+0432. The central moment of inertia of the PNS PSR J0348+0432 is in the range 2.207?×?10⁴⁵–1.914?×?10⁴⁵ g cm² whereas that of the NS PSR J0348+0432 is only in the range 1.9?×?10⁴⁵–1.552?×?10⁴⁵ g cm². Compared with the moment of inertia of the NS PSR J0348+0432, the central moment of inertia of the PNS PSR J0348+0432 increases by 16%–23%.     

同步荧光光谱法测定滁菊中氨基酸总量

氨基酸与乙酰丙酮和甲醛反应得到的产物能发出荧光,据此建立了同步荧光光谱法测定滁菊中氨基酸总量的方法。以苯丙氨酸作为测定滁菊中氨基酸总量的目标物。优化的试验条件如下:1苯丙氨酸、谷氨酸的波长差为55nm;2甘氨酸和混合氨基酸的波长差为60nm;3反应体系的pH为6.0;4反应温度为100℃;5反应时间为60min;6 4%甲醛溶液用量为1.5mL;7 2%乙酰丙酮溶液用量为1.25mL。苯丙氨酸的质量浓度在5.00~50.0mg·L-1范围内与其荧光强度呈线性关系,方法的检出限(3s/k)在0.30~0.87mg·L-1之间。对苯丙氨酸样品连续测定10次,测定值的相对标准偏差为1.2%。用标准加入法做方法的回收试验,计算得回收率在64.7%~103%之间。     

Effects of σ* and Φ mesons on the surface redshift of a neutron star

The effects of σ and Φ mesons on the surface redshift of a neutron star have been investigated within the framework of relativistic mean field theory for the baryon octet {n,p,Λ,Σ,Σ 0,Σ +,Ξ,Ξ 0 } system.It is found that compared with those without considering the contributions of σ and Φ mesons,the surface redshift decreases and that corresponding to the maximum value of the mass also decreases from 0.2540 to 0.2236,about by 12%.Meanwhile,it is also found that including σ and Φ mesons,the M/R and that corresponding to the maximum mass decrease.     

The upper bound of box dimension of the Weyl-Marchaud derivative of self-affine curves

A certain type of self-affine curves can be transferred into fractal functions. The upper bound of fractal dimensions of the Weyl-Marchaud derivative of these functions has been investigated, and further questions have been put forwarded.