最大度为6的极大外平面图的完备色数

证明了最大度为６的极大外平面图的完备色数为７。     

色屏蔽效应与重子谱

利用从格点规范理论计算得出的,包括色屏蔽效应的禁闭位势;研究了重子结构,计算了重子谱及相应状态下的夸克分布的均方根半径.     

d轨道分裂和过渡金属化合物性质的研究

用群的表示来讨论过渡金属化合物中心离子在不同对称场中d轨道分裂 ,并通过群链的分解 ,应用广义Wigner-Eckart定理来研究d轨道分裂能。然后进一步解释过渡金属二硫属化合物电子结构、电学性质的特点和宝石的致色机理     

TrpH—TryOH肽链中电子的逆向转移

本文较详细的研究了色氨酰酪氨酸二肽（ＴｒｐＨ－ＴｙｒＯＨ）中的电子转移，电子该电子转移的速率，甚至电子转移的方向都强烈的依赖于溶液的ｐＨ。而且，该肽中的酪氨酸残基瞬态粒子浓度与色氨酸残基瞬态粒子浓度之比也强烈的依赖于ｐＨ。根据这种依赖性，求得了二肽中的ｐＫａ（ＴｒｐＨ＾＋）和ｐＫａ（ＴｙｒＯＨ），其值分别为６．２和１１．３。     

Interplay Between Quark-Antiquark and Diquark Condensates in Vacuum in a Two-Flavor Nambu-Jona-Lasinio Model

By means of a relativistic effective potential, we analytically research competition between the quark- antiquark condensates （qq） and the diquark condensates （qq） in vacuum in ground state of a two-flavor Nambu Jona Lasinio （NJL） model and obtain the Gs-Hs phase diagram, where Gs and Hs are the respective four-fermion coupling constants in scalar quark-antiquark channel and scalar color anti-triplet diquark channel. The results show that, in the chiral limit, there is only the pure （qq） phase when Gs/Hs 〉 2/3, and as Gs/Hs decreases to 2/3 〉 Gs/Hs ≥ 0 one will first have a coexistence phase of the condensates （qq） and （qq） and then a pure （qq） phase. In non-zero bare quark mass case, the critical value of Gs/Hs at which the pure （qq） phase will transfer to the coexistence phase of the condensates （qq） and （qq） will be less than 2/3. Our theoretical results, combined with present phenomenological fact that there is no diquark condensates in the vacuum of QCD, will also impose a real restriction to any given two-flavor NJL model which is intended to simulate QCD, i.e. in such model the resulting sma/lest ratio Gs/Hs after the Fierz transformations in the Hartree approximation must be larger than 2/3. A few phenomenological QCD-like NJL models are checked and analyzed.     

一位理论物理学大师人生的第二个春天——读杨振宁先生Selected Papers Ⅱ With Commentaries有感

<正>1982年,杨振宁先生在60寿辰之际,一反庆祝著名科学家寿辰出版纪念文集(Festschrift)的惯例,亲自选编并出版了他的《文选暨评注》(Selected Papers With Commentary,以下简称《文选》)[1],共600页。在这本文选中,杨先生从他撰写的二百余篇论文中选择了75篇论文,并为每篇选文一一撰写了评注。评注共约80页,集中放在75篇选文的前面,中间附有25张照片。     

256色模式下图形图像处理系统中对不规则区域的处理

概述了图形图像处理系统中关于不规则区域的基本算法，包括：区域填充，边界跟踪，边界标志，几何处理，区域分割等等．并且，根据２５６色模式的特殊性，对传统的算法做了有针对性的改进，加快了处理速度，使其更适合于电影电视字幕、动画卡通人物等不规则图形图像区域．同时还给出了改进算法的程序设计的技巧．     

再论q^—图

本文在文[1]的基础上,讨论了没有q-割团、但有(q+1)-割团且q-色唯一的q-图的结构。     

多模玻色二次多项式型系统的特性函数和准概率分布函数

运用多模玻色系统广义线性量子变换的普遍理论，对多模玻色二次多项式型系统进行了研究.给出了多模玻色二次多项式型系统的正规、反正规、Wigner特性函数、P表示和Q表示.举例讨论了该系统的压缩性质. 关键词： 多模玻色二次多项式型系统 特性函数 准概率分布函数     

Investigation of unique hue setting changes with ageing

Clromatic sensitivity along the protan, deutan, and tritan lines and the loci of the unique hues (red, green, yellow, blue) for a very large sample (n = 185) of colour-normal observers ranging from 18 to 75 years of age are assessed. Visual judgments are obtained under normal viewing conditions using colour patches on self-luminous display under controlled adaptation conditions. Trivector discrimination thresholds show an increase as a function of age along the protan, deutan, and tritan axes, with the largest increase present along the tritan line, less pronounced shifts in unique hue settings are also observed. Based on the chromatic (protan, deutan, tritan) thresholds and using scaled cone signals, we predict the unique hue changes with ageing. A dependency on age for unique red and unique yellow for predicted hue angle is found. We conclude that the chromatic sensitivity deteriorates significantly with age, whereas the appearance of unique hues is much less affected, remaining almost constant despite the known changes in the ocular media.