‘A Dangerous Revolutionary Force Amongst Us’

ABSTRACT

Historians of nineteenth-century British tea consumption have highlighted the function of the substance as an index of middle-class civility and marker of national identity. In this article, I maintain that concerns about tea drinking were equally prominent throughout the late Victorian period. As medical practitioners increasingly intervened in food matters, apprehension about the physiological and psychological consequences of increasing access to tea in working-class communities proliferated. This pessimistic discourse can be firmly situated in the context of broader debates about national decline, physical and mental deterioration, the subversion of gender roles in the domestic sphere and Imperial expansion.     

茶多酚补充对游泳大鼠脂肪代谢的影响及机理研究

目的:以游泳大鼠为研究对象,通过检测其补充茶多酚过程中身体成分和脂肪代谢的变化,探讨茶多酚补充对游泳大鼠脂肪代谢的影响及机理.方法:将雄性Wistar大鼠40只随机分为4组(安慰剂对照组、运动对照组、补充茶多酚对照组和补充茶多酚运动组).采用沉淀法测定大鼠血清LDL-C和HDL-C水平;酶法测定血清TC和TG;比色法测定血清LPS、LPL和HL.结果:4周茶多酚补充可明显减缓游泳大鼠体重和体脂增长速度,明显降低大鼠血清TC水平及游泳大鼠血清LDL-C水平.同时,茶多酚补充可明显提高游泳大鼠血清LPL含量,并一定程度地降低其血清HL水平.结论:茶多酚补充可在一定程度上减慢游泳大鼠体重和体脂的增长速度,加快其能量代谢速度;可能会通过影响游泳大鼠脂肪代谢相关调控酶水平,使其血脂水平下降,进而影响其脂肪代谢过程.     

苏轼美茶思想的理解与阐发

茶,尤其是名茶,从外形到内涵都具有很强的审美意义。苏轼通过大量的诗词文赋,深刻阐述了自己的美茶思想。这些美茶思想,不仅进一步丰富了苏轼的美学思想宝库,而且对于人们研究茶叶审美也发挥着引领的作用。     

中国茶文化门户网站的文化分析

中华文化博大精深,作为中华文化的重要成员之一,茶文化对其传承与发扬起到了不容忽视的作用。在当代,茶文化与现代科技充分融合,发展成了新时期的现代茶文化,同时,又更好地弘扬了中华文化。本文紧绕中国茶文化门户网站,从网站的茶文化主题、茶文化结构、茶文化模式三方面进行了文化分析,以展示出现代茶文化的文化价值。     

言说与沉默——论王小波作品的主体话语救赎

"逃于言"是王小波特有的一种"言说"策略。王小波利用"逃于言"的策略,一方面阐明了写作的意义,另一方面借助沉默的力量和黑色幽默的叙事智慧来抵抗话语管制和主体异化的消极后果,最大限度地实现了主体的话语救赎。     

Evaluation of the antioxidant effects of four main theaflavin derivatives through chemiluminescence and DNA damage analyses

Theaflavins (TFs) are the dimers of a couple of epimerized catechins, which are specially formed during black tea fermentation. To explore the differences among four main TF derivatives (theaflavin (TF₁), theaflavin-3-gallate (TF₂A), theaflavin-3′-gallate (TF₂B), and theaflavin-3,3′-digallate (TF₃)) in scavenging reactive oxygen species (ROS) in vitro, their properties of inhibiting superoxide, singlet oxygen, hydrogen peroxide, and the hydroxyl radical, and their effects on hydroxyl radical-induced DNA oxidative damage were systematically analyzed in the present study. The results show that, compared with (−)-epigallocatechin gallate (EGCG), TF derivatives were good antioxidants for scavenging ROS and preventing the hydroxyl radical-induced DNA damage in vitro. TF₃ was the most positive in scavenging hydrogen peroxide and hydroxyl radical, and TF₁ suppressed superoxide. Positive antioxidant capacities of TF₂B on singlet oxygen, hydrogen peroxide, hydroxyl radical, and the hydroxyl radical-induced DNA damage in vitro were found. The differences between the antioxidant capacities of four main TF derivatives in relation to their chemical structures were also discussed. We suggest that these activity differences among TF derivatives would be beneficial to scavenge different ROS with therapeutic potential.     

从跨文化角度对比分析英汉语中黑色的隐喻认知

以大量翔实的与颜色词＂黑＂有关的隐喻表达为语料,从跨文化角度对英汉语中黑颜色的隐喻认知进行对比分析,并对黑颜色隐喻认知是如何根植于英汉文化中进行探究,以期能帮助英汉语习得者在跨文化交际时减少语用失误,进而有助于提高其跨文化交际能力。     

茶叶中稀土元素检测方法研究进展

简要概述了茶叶的前处理方法和稀土元素质量分数测定的主要方法,包括灰化法、湿法消解法和微波消解等前处理法,以及分光光度法、电感耦合等离子体发射光谱法、电感耦合等离子体质谱法和中子活化法等检测方法。综合比较,在检测不同类型茶叶中稀土质量分数时,微波消解－ICP-MS 技术具有操作简单、准确度高的优点。     

湛江茶文化的特征及其价值探讨

湛江市地处祖国大陆最南端,特定的地理位置和气候条件形成了当地独特的茶文化,并彰显出与别地截然不同的文化特征。这种特征在现代社会体现出经济、文化和社会三种价值,可以有效开发利用。     

不同种类茶叶茶多酚对细菌生长的抑制作用

目的探讨不同种类茶叶中茶多酚对细菌生长的抑制作用。方法提取茶多酚,配成不同浓度的溶液;纸片法测定茶多酚(浓度为140mg/ml、120mg/ml、100 mg/ml、80 mg/ml、60 mg/ml、40mg/ml)对大肠杆菌、金黄色葡萄球菌及枯草杆菌的抑菌作用;比较抑菌效果。结果三种茶叶的茶多酚对供试细菌均有抑制作用,但不同茶叶的茶多酚对细菌的抑制作用不同,不同种类茶叶茶多酚对同一菌种的抑制作用亦不同。结论不同种类茶叶的茶多酚对细菌生长均有一定的作用。