共查询到16条相似文献,搜索用时 46 毫秒
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金木水土火,五行中有木。作为组成自然界的基本物质元素之一,木头历来都与人们的生活皂、息科挟。在今天,依然有一群人,在人生最好的时光里选择了以木为伍,悦木共生。 相似文献
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袁世文 1947年10月出生于景德镇"陶瓷世家"其舅公系珠山八友之一汪野亭.景德镇乐平市人 , 工作室名"雪缘斋", 受骋于轻工业陶瓷研究所艺术中心,江西省高级工艺美术师、江西省工艺美术大师、市美术家协会顾问、中国陶瓷协会理事、市政协委员、珠山陶瓷艺术院皖长.作品<窗含西岭千秋雪>获2009年中国工艺美术"百花奖"(深圳)金奖. 相似文献
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Three chromatographic techniques were compared to determine the solubilized phenolic compounds, from sugarcane bagasse pith pretreatment. Reverse phase gradient system I, was chosen as a technique to be evaluated in aromatic compounds determination, because it presented good selectivity, reproducibility and percent recovery of phenolic compounds. However, gradient system II, and ionic exchange, resulted in longer resolution time, even though they had good resolution and selectivity. The amount of aromatic compounds determined by reverse phase gradient elution, were in decreasing order: 4-hydroxycinnamic acid (p-coumaric acid), 4-hydroxy-3-methoxycinnamic acid (ferulic acid), 4-hydroxybenzaldehyde (p-hydroxybenzaldehyde), 4-hydroxy-3-methoxybenzaldehyde (vanillin), and 4-hydroxy-3-methoxybenzoic acid (vanillic acid). Reverse phase gradient system I, can be useful to identify and quantify the phenolic compounds solubilized in other lignocellulosic materials. From the experimental design 23, the most important effect on total phenolic compounds solubilization, were: alkali concentration, temperature and alkali-moisture content interaction. In addition, the maximum amount of these compounds were obtained at high levels of experimental conditions, that is; 10% Na0H (ODW), 50°C of temperature, and 80% of moisture content. 相似文献
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以向日葵茎髓为原料,制得3种不同极性向日葵茎髓提取物。采用琼脂扩散法测定3种不同极性向日葵茎髓提取物对4种受试菌的抑菌活性;并以其中的金黄色葡萄球菌和大肠杆菌为研究对象,探讨了乙酸乙酯萃取部位(EE)的抑菌机制。结果显示:不同极性萃取部位对4种受试菌均有一定抑制作用。其中,EE处理金黄色葡萄球菌和大肠杆菌的最低抑菌质量浓度(MIC)均为0.78 g/L,半数抑制质量浓度(IC50)分别为(1.11?0.01)和(1.59?0.03)g/L;抑菌作用与其总酚、总黄酮含量呈显著正相关性(P0.05)。通过SEM分析发现,EE处理引起菌体形态变化,破坏菌体的细胞膜结构;EE可增加金黄色葡萄球菌和大肠杆菌细胞膜结构的通透性,使菌体内的电解质、蛋白质、碱性磷酸酶向胞外泄露;应用4?,6-二脒基-2-苯基吲哚(DAPI)染色和荧光检测发现,EE能干扰细菌遗传物质(DNA)的复制,最终抑制受试菌增殖。 相似文献
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介绍了喷涂机器人的特点,以及调试喷涂机器人的过程。利用喷涂机器人的优点,开发并调试了一款新颜色,通过改变喷涂参数,解决了涂料遮盖力差的问题。 相似文献
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