长春市中小学生视觉选择反应时的动态分析比较研究

通过对长春市7～15岁男女中小学生视觉选择反应时的测试,找出男女生在7～15岁期间视觉选择反应时的变化特点,及其两者之间的差异性和共同性,为今后体育教学按着儿童少年视觉选择反应速度的变化规律,安排适宜的教学内容和实施因材施教的原则提供科学依据。实验结果表明:长春市男女中小学生视觉选择反应速度快速增长期段增长幅度具有一定的差异,男女生视觉选择反应速度快速增长与负增长次数及总体增长幅度具有一致性。     

关于锌与硫酸反应速度的实验研究

根据理想气体定律，设计一锌与硫酸反应的封闭实验体系，通过测定体系(单位时间内体系)压出液体速度的快慢，验证了在原电池状态下锌与稀硫酸反应速度较非原电池状态下反应速度快的结论，实验效果较为明显，并分析了反应温度、浓度、锌片和铜片的面积等对反应速度的影响。     

对跆拳道运动员“感知觉”“反应和反应时”及心理特征的分析

对跆拳道运动员的感知觉、反应和反应时及心理特征进行了分析,认为上述心理特征直接影响运动员技术学习的快慢、训练水平的高低和比赛发挥的好坏。     

"绿色化学"——化学工业的明天

绿色化学以原子经济反应为核心,搞绿色合成、清洁工艺,最终实现化工生产过程废物的"零"排放.从阐明当今化学工业的发展只有寄托于创新的绿色化学,才能实现环境保护和经济增长之间可持续发展.     

An appreciation of free radical chemistry 6. Experiments involving free radicals

In the previous five parts, we have seen how the ubiquitous free radicals touch our lives in many ways. In this part, four experiments involving free radical intermediates are described. They are very simple, economical and practical, and can be easily carried out in laboratories with meagre resources. They can, therefore, be adapted for MSc chemistry practicals as part of free radical chemistry course.     

Fungal bioreceptivity of Japanese tissue papers treated with plant dyes,watercolours, and acrylic paints in paper conservation

Despite substantial literature on the dyeing of textiles, there is a lack of research about colouring Japanese mending papers (tissue papers) used for paper conservation purposes. This study investigates the fungal bioreceptivity of Japanese tissue papers after they have been treated with various dyes and pigments. A variety of toning materials including plant dyes, watercolours, acrylic paints, inks, pastels, gouaches, and colour pencils are commonly used by conservators for paper toning purposes. In this study, two Japanese tissue papers (Yukyu-shi and Sekishu Mare) were treated with selected plant dyes, watercolours, and acrylic paints and then inoculated with fungal species. Quantitative real-time polymerase chain reaction (qPCR) was used to quantify the DNA from Aspergillus niger and Penicillium rubrum as a proxy for fungal species abundance before and after inoculation and artificial moist heat ageing. qPCR primers which were universal for fungi amplified DNA from papers inoculated with A. niger and P. rubrum and these species were found to grow less on treated Sekishu Mare and Yukyu-shi papers compared with untreated papers. Sekishu Mare papers treated with artists' acrylic paints were found to be more resistant to fungal growth than similarly treated Yukyu-shi papers. This study suggests that for the best long-term preservation outcomes for paper materials in archives, libraries, galleries, and museums, acrylic paints generally perform better in conservation terms than most plant dyes and watercolours, although most colourants displayed some bioinhibition.     

弱酸性艳红B合成工艺的探讨

用于羊毛、蚕丝、锦纶等织物染色的弱酸性艳红B,具有优良的染色性能和较好的染色坚度,是印染工业常用的化学物质。     

"南山"意象的生成与承传——原型批评视野中的"南山"意象

在古代诗歌里，“南山”意象形成了一个庞大的系列。深入探讨这个意象系列，可以感受到其中暗含的某种联系，体悟到“南山”意象背后先民对于自然的本能反应、本能反应背后的深层情感力量和共同感受，以及先民乃至人类审美反应的共同心理程序。“南山”意象的生成与承传，也集中表现了一个本体性的内涵：原始意象较之其它人类表达形式，更能深刻地切近人的本质特点，更能表现与集体无意识相关的人类复杂的心灵世界。     

论散手运动员反应能力的心理训练

反应能力是一项重要的心理指标,它影响着散手运动员的技、战术的正确运用与发挥。散手运动员的反应主要属复杂的视觉——运动反应。反应心理训练主要是提高运动员的感知、思维、判断和预测能力以及运动协调能力。