论楚国丝绸中的蟠龙飞凤纹与商周兽面纹的传承关系

蟠龙飞凤纹出自战国时期马山1号楚墓,构图精巧,装饰华丽,是先秦时期风格独特的纹样类型。通过分析图像中的各个构成元素,分别从题材、构图等角度比较蟠龙飞凤纹和商代、西周青铜器中流行的系列兽面纹,可知楚国丝绸中的蟠龙飞凤纹由兽面纹演变而来,其中延续了商代、西周的文化基因,表现了以北极星为中心、龙凤为辅的星象系统,在题材种类、造型方式、色彩等方面融入了楚人的审美喜好,主要体现了楚人的天体崇拜理念,最终也证明商、西周、楚国的纹样之间存在清晰的传承关系。     

红皮火龙果皮多糖过氧化氢脱色工艺及抑菌活性研究

采用过氧化氢对提取得到的红皮火龙果皮多糖进行脱色,研究过氧化氢浓度、脱色温度和脱色时间对红皮火龙果皮多糖脱色率的影响,采用响应面法对脱色工艺条件进行优化,并对红皮火龙果皮多糖的抑菌活性进行研究。结果表明:在过氧化氢的浓度为4.3%,脱色温度为62℃和脱色时间为109min的条件下,红皮火龙果皮多糖中色素的脱色率和多糖的保留率分别为88.17%和82.39%。红皮火龙果皮多糖对大肠杆菌、蜡样芽孢杆菌、枯草芽孢杆菌和金黄色葡萄球菌均有较好的抑制作用。     

“龙戏珠”与天文

我国古代建筑中应用最广泛、等级最高的装饰图案为“龙”的图案。“龙图腾”寓意吉祥。“龙戏珠”与天文学有关。“龙戏珠”中宝珠原指月亮，因与古代“阴阳”论之“阳刚阴柔”之义不符，变成了 “日之珠”。早期的图案为单龙戏珠，后出现了 “二龙戏珠”，图案变得更生动活泼、富有情趣。     

重庆市铜梁县“龙文化发展战略规划”

根据城市的性质和特点来谋划制定城市的发展战略,把所选城市的特色或特色的城市作为制定城市发展战略最关键的要素和依据。“龙文化发展战略”正是在这一原则的指导下,对重庆市铜梁县城市发展规划作出了构思和策划。     

龙之舞

本方案力图从项目的立意入手,从当地的地域文化、地域特征着眼,给项目一个贯穿始终的设计理念。方案以回归这一主题向外衍生,以水之龙、山之龙及龙的传人为创作元素,努力完成一个主题与功用紧密结合的作品。     

Betacyanins in dragon fruit peels: the kinetic models of their degradation under different treatment conditions

In this study, after purification, the content of betacyanins in dragon fruit peels was 9.22 mg g⁻¹ dry sample. The stability of betacyanins under the effect of different concentration of metal cation (K⁺, Na⁺, Cu²⁺, Fe²⁺, Fe³⁺, Mg²⁺, Al³⁺) solutions and sugars (glucose, sucrose, fructose, maltose and lactose) solutions was observed. The results showed that 10% lactose and 0.08 mol L⁻¹ potassium chloride solution increased the stability of betacyanins and could be used as stabiliser agents. The degradation reaction under different temperatures (20, 30, 40, 50, 60, 70, 80 °C), pH (2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0) and light conditions (light and dark) of mixed solution (betacyanins and stabiliser), including aqueous pigments solution (APS), lactose pigments solution (LPS) and potassium chloride pigments solution (PCPS), accorded with the first-order reaction kinetics. The t_1/2 values (the hours needed for 50.0% degradation of betacyanins) of LPS even up to 330.0 h at 20 °C and dark condition.     

Influence of drying conditions on colour,betacyanin content and antioxidant capacities in dried red-fleshed dragon fruit (Hylocereus polyrhizus)

In this study, drying of red-fleshed dragon fruit at different temperatures (40, 50, 60, 70 and 80 °C) and air velocities (1.0 and 1.5 m s⁻¹) was conducted under the specific humidity of 25 g H₂O kg⁻¹ dry air. The results showed that drying at higher temperatures resulted in shorter drying times. However, temperature and air velocity did not significantly affect the total betacyanin contents and antioxidant capacities in dried products. Seven betacyanins identified by LC-MS were betanin, isobetanin, phyllocactin, isophyllocactin, betanidin 5 –O-(6′O-3-hydroxybutyryl)-β-glucoside, isobetanidin 5 –O-(6′O-3-hydroxybutyryl)-β-glucoside and decarboxylated phyllocactin. In addition, the temperature increased the isomerisation of betacyanins. The most preferable condition for preserving the colour and betacyanin contents of red-fleshed dragon fruit was the drying at a temperature of 80 °C and air velocity of 1.5 m s⁻¹ since it could shorten the drying time and give a bright red colour to the dried product as well as it had no significant impact on the betacyanins.     

机制游龙纸纤维丝束制备方法的研究

实验以黏胶纤维为原料,以阴离子聚丙烯酰胺(APAM)、聚氧化乙烯(PEO)和阳离子物质A为助剂,制备机制游龙纸的纤维丝束("游龙丝"),研究了3种助剂对黏胶纤维制备"游龙丝"过程的影响。当APAM用量为黏胶纤维的0.6%时,"游龙丝"结构紧密;当PEO用量为0.2%时,"游龙丝"分散效果最好;阳离子物质A可使"游龙丝"结构紧密,其用量为2%时,"游龙丝"形态明显,结构紧密,"游龙丝"在溶液中分散均匀。     

基于神龙卡的多路视频硬盘播出系统研究

多路数字视频硬盘播出系统是一款为实时视频信息发布而专业设计的软件,为各行业提供了一个低成本高质量的视频信息发布的解决方案。该系统能在最大程度上挖掘最终用户现有电视网络带宽资源的潜力,能最大限度地发挥最终用户已有的各类多媒体、光盘等资源投入,使用户真正体会到资源全面整合所带来的便利和效益。     

复合金属屋面系统在体育场屋面工程中的应用

蚌埠体育中心项目以中国传统文化中的龙作为设计理念,其屋面采用复合金属屋面系统,最外层为装饰铝板,以矩形和菱形为主,呈鳞片状,而龙鳞板的设计也成了该项目的一个亮点。如何保证屋面系统中装饰板构造体系的受力稳定和结构安全是其中的重点和难点;且本屋面为双曲造型,如何保证实现复杂造型的同时确保屋面系统的防水效果,也是本项目业主和施工方最为关注的问题。本文从体育场的复合金属屋面系统的设计、加工制造、重难点及施工方案等方面对该项目做了介绍。