刘天华十大二胡名曲之八:明澈流畅的《月夜》

《月夜》是刘天华创作的第二首二胡独奏曲。1918年初稿,1924年定稿发表。据其弟刘北茂回忆他在家乡举办暑期国乐研究会时演奏此曲的情形,实际上此时已初稿写就:大约在农历七月初的一天,入夜,炎炎的骄阳早已沉入西边的山谷,天气还是异常闷热。人们都在屋外不断地摇着大蒲扇驱暑纳凉,我亦跑到礼延学堂去溜达。当我走近那葫芦形的荷花池时,只见一弯银弓似的新月正升上树梢,二兄正端坐在荷花池畔聚精会神地为大家演奏他创作的二胡名曲《月     

还孩子主动学习的空间——从《鞋匠的儿子》浅谈我的“合、实”语文课堂观

在教学中,要力求综合文本、学生、教师、学习氛围等课堂要素,在他们之间形成纵横交错的信息交流网络,充分关注学生的学习感受,让学生真正成为学习的主人。     

铊的中毒与救治

在介绍铊的理化性质及重要用途的基础上,着重论述了铊中毒的临床症状、中毒机理及解毒护理,旨在帮助人们识别、预防有关铊及其化合物引起的中毒事件。     

【刘天华十大二胡名曲之七】:苦中自乐的《苦闷之讴》

《苦闷之讴》,又名《苦中乐》,刘天华作于1926年8月。《苦闷之讴》即《苦闷之歌》,其讴字是借用了楚调、蜀音、蔡讴等传统腔调的称谓。今所谓讴歌作叠字解,讴即歌,歌即讴;作动词解就是唱歌。此曲又名《苦中乐》,说明刘氏在写作之时,虽感到异常的苦闷,但苦闷之中还没有丧失自信心,丧失进取心;还能苦中自乐,苦中找乐。在写作此曲的1926年,对刘天华来说确实是十分地艰难与困苦的。是年,发生了震     

The Little Prince（节选）小王子

小说叙述者是个飞行员,他在故事一开始告诉读者,他在大人的世界里找不到一个说话投机的人,因为大人都太讲实际了。     

哈哈镜

~~哈哈镜@曾泉圣     

Sedimentation of a single particle between two parallel walls

The sedimentation of a single circular particle between two parallel walls was studied by means of direct numerical simulation (DNS) and experiment. The improved implementation of distributed Lagrange multiplier/fictitious domain method used in our DNS is a promising new way for simulation of particulate flows. The settling behaviors of the particle are presented ranging in Reynolds number from 0 to about 700, which showed that our results for low Reynolds numbers agreed well with that reported before. Nevertheless, for higher Reynolds numbers our results were different from theirs. The long-term mean equilibrium positions in our results were all on the centerline, but not at off-center position as reported before. In order to validate our simulation, experiments were also conducted. The results showed that the sedimenting behavior simulated in this paper agreed well with our experiment result.