The Mixed Quark-Gluon Condensate from the Global Color Symmetry Model

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苏皖沿江平原全新世气候变化与洪水事件研究

通过地貌调查并根据林峰桥地层剖面的粒度、地球化学以及碳同位素等环境替代指标分析得出 :苏皖沿江平原在距今 140 0 0aBP左右气候湿润 ,沼泽发育 ,大量的泥沙沉积 ;此后气候变干 ,沼泽开始退缩 ,直至消失 ,沉积作用减弱 ;在经过了长时间的沉积间断后又经历一次洪水泛滥期 距今约 10 2 0 0～ 10 80 0aBP ,该区经过新仙女木期的寒冷期后进入了全新世的增温期 ,沉积作用增强 ;后又经历多次气候冷暖波动 ,在 (76 40± 12 0 )～ 3 80 0aBP全新世最适宜期增温事件后 ,气温又开始下降 在研究中还发现 ,古洪水多发生在气候转型期 .     

一种新的适用于彩色图像处理的彩色空间变换方法

从人眼的视学特性角度出发，在ＣＩＥ国际颜色标准系统和孟塞尔系统基础上，提出了一种适用于人彩色图像处理的色空间转换模式，并利用此方法对医用胃镜输出的图像进行了不破坏色调前提下的图像增强处理，明显地提高了彩色图像的细节分辨，实践证明该方法不失为一种具有实用意义的彩色空间变及图像处理方法。     

溴代十六烷基三甲胺存在下铜铁同时与苯基荧光酮显色反应的研究

对 Cu2 + 、Fe3+ 在溴代十六烷基三甲胺 (CTMAB)存在下同时与苯基荧光酮的显色反应进行了研究 ,发现它们与苯基荧光酮均能形成稳定的络合物 ,Cu2 +络合物的最大吸收波长为 5 99nm,摩尔吸光系数为 1 .0 8×1 0 5;线性范围 0～ 7μg/2 5 m L.Fe3+络合物的最大吸收波长为 63 8nm,摩尔吸光系数为 8.87× 1 0 4 ,线性范围 0～6μg/2 5 m L.在水样中进行回收率的测定 ,结果满意 .     

Ti：Al2O3晶体紫外及可见光谱的浓度效应研究

通过对不同浓度的Ｔｉ：Ａｌ２Ｏ３晶体紫外吸收光谱，可见偏振荧光光谱及其激发光谱的研究，发现峰值４２０ｎｍ的宽带可见荧光，室温下较强的σ偏振光在低温（７７Ｋ）下变得比π偏振光弱。在液氮温度下π偏振光谱分裂成３３０ｎｍ，４２０ｎｍ，４６０ｎｍ，５６０ｎｍ等离荧光带。研究认为，这些发光带分别与色心（Ｆ＾＋，Ｆ心）及Ｔｉ＾４＾＋离子的电荷转移跃适有关。并且室温下可见荧光具有的较强的浓度猝灭及现象来源于Ｔｉ     

Walls Surrounding a Space Work More Efficiently Construct a Recognized Visual Space of Illumination than Do Scattered Objects

The apparent color of an object depends on how we recognize the space where it is placed in terms of illumination. We call this the recognized visual space of illumination (RVSI). What we see in the space first, namely, the initial visual information (IVI) determines properties of the RVSI, and we will show in this paper that the walls surrounding this space are the most important IVI for the construction of the RVSI. A normal room was illuminated by a ceiling light at 60 lx and its central area was also lit by a hidden illumination of 400 lx. Two halves of a miniature room with walls on three sides and a floor were inserted from left and right sides into the hidden illumination to gradually create one miniature room, and the apparent lightness of a test patch was judged as a function of the amount of the inserted portions to measure construction of RVSI for the hidden illumination. The apparent lightness was around 55 in L∗ when no IVI was in the hidden illumination, it gradually went down with more IVI to around 40 L∗ to return toward its nominal lightness of 24 L∗ in the case of test patch N2. The drop was large with the present condition of IVI where, in the end, the space of the hidden illumination was surrounded by walls, compared to the previous results where the space was filled only by objects; this indicated the importance and efficiency of walls for constructing RVSI.     

光源相关色温与分布温度的实验分析

在国家色温基准改造课题中,通过光谱辐射测量法得到色温副基准灯的相对光谱功率分布,分别采用四种不同的算法计算出光源的相关色温以及分布温度。为了比较这些计算方法的差别,由相关色温和分布温度反算出相应的光谱功率分布,分析了与光源原始分布的偏差。对采用不同算法得到的色坐标进行了对比,进一步阐明了光源的分布温度与相关色温之间的区别和联系。     

Physicochemical Characterization of Resistant Starch Type-III (RS3) Obtained by Autoclaving Malanga (Xanthosoma sagittifolium) Flour and Corn Starch

The feasibility of obtaining resistant starch type III (RS3) from malanga flour (Xanthosoma sagittifolium), as an unconventional source of starch, was evaluated using the hydrothermal treatment of autoclaving. The physicochemical characterization of RS3 made from malanga flour was carried out through the evaluation of the chemical composition, color attributes, and thermal properties. In addition, the contents of the total starch, available starch, resistant starch, and retrograded resistant starch were determined by in vitro enzymatic tests. A commercial corn starch sample was used to produce RS3 and utilized to compare all of the analyses. The results showed that native malanga flour behaved differently in most of the evaluations performed, compared to the commercial corn starch. These results could be explained by the presence of minor components that could interfere with the physicochemical and functional properties of the flour; however, the RS3 samples obtained from malanga flour and corn starch were similar in their thermal and morphological features, which may be related to their similarities in the content and molecular weight of amylose, in both of the samples. Furthermore, the yields for obtaining the autoclaved powders from corn starch and malanga flour were similar (≈89%), which showed that the malanga flour is an attractive raw material for obtaining RS3 with adequate yields, to be considered in the subsequent research.