【摘 要】
：
In 1928, Sir Alexander Fleming noted that some common green mould had grown among bacteria which had previously been planted in a culture plate. As the mould g
论文部分内容阅读
In 1928, Sir Alexander Fleming noted that some common green mould had grown among bacteria which had previously been planted in a culture plate. As the mould grow, it formed a liquid which destroyed the nearby microbe-colonies . Fleming tried this liquid out on other types of bateria and found that some were dissolved while
In 1928, Sir Alexander Fleming noted that some common green mould had grown among bacteria which had previously been planted in a culture plate. As the mould grow, it formed a liquid which destroyed the nearby microbe-colonies . Fleming tried this liquid out on other Types of bateria and found that some were dissolved while
其他文献
狼疮性肾炎(LN)的治疗最近有很大的进展,中西医结合能增加疗效而减少其副作用,现结合作者经验,按临床类型分述如下:一、隐匿性或慢性肾炎型病理损害多为系膜性肾小球肾炎或
寂静的深夜，一个蒙面大盗抢劫了银行，保安在一晃而过的车灯中发现劫匪的脖子有一块伤疤。这是重要线索。1小时内，全市各交通要道口，警车呼啸来往。警察用高音喇叭公布悬赏令：“劫
“种茶、制茶、品茶，现在成了我们六堡镇最鲜亮的名片!”说起茶，土生土长的广西梧州市六堡镇人石濡菲无比自豪。从土产到技能，从技能到事业，再到文化传承，石濡菲可以说有幸经历着
一封闭性。生活范围狭窄,教室、食堂、寝室三点一线,书桌是伴侣,学校是天地,生活贫乏,难为无米之炊。学生为应付交差,或冥思苦想胡乱编造,或东抄西摘硬加拼凑。同一事件,稍
最近,我们在初二年段开设了花卉栽培劳动技术课。根据当地气候、土壤、水质等具体情况,我们自编教材。主要教学内容有:①栽培花卉的意义,包括花卉与绿化、花卉与创收、创汇;
我的家乡在木洞镇，现在属于重庆市巴南区．可一些上了年纪的老人，还是常常会说他们是巴县人。这。大概是一种记忆挥之不去的烙印。我是踩着河沙坝那圆溜溜的鹅卵石、唱着悠扬的木
引理不定方程x~2-y~2=c(c∈Z)有整数解的充要条件是c■2(mod4)。证:必要性。若存在整数x、y使x~2-y~2=c■(x+y)(x-y)=c,∵x+y、x-y同奇偶,∴c是奇数,或者4|c,故c■2(mod4)。
今年上半年,全国渔业经济继续保持良好的发展态势,结构调整取得进展,水产养殖业发展势头较好,资源保护力度继续加大。水产品国内市场价格比2001年末略有回升,但较去年同期有
10月份,因有的养殖品种已经收获,所以本月有实际测报记录的市地是 14个,实际测报的养殖品种为 11个,其中鱼类6种、虾类1种、贝类3种、藻类1种。共有7个养殖品种发生16种病害,
以丁酮、草酸二乙酯为原料，经Claisen缩合、Knorr环合和甲基化等多步反应合成了8个结构新颖的1-甲基-1H-吡唑-5-甲酰胺类化合物，其结构经Mass和’HNMR等确证。生测结果表明：化合