新疆回族社区传统文化的现代化

现代化是当今世界的主旋律,发展是实现现代化的硬道理。中国的现代化进程离不开少数民族的现代化,回族作为中国人口众多,分布广泛的少数民族,对中国现代化的胜利实现起着至关重要的作用。新疆是回族聚居的重要地区,新疆回族社区的现代化必须在积极吸收传统文化精髓的基础上,克服与现代化冲突的部分,形成适应现代化需要的现代回族文化体系,才能真正为现代化的实现奠定坚实的基础。     

一种气动传输粉体质量流量测量方法

介绍了一种新型静电质量流量测量方法,该方法使粉体流经预先设置的电场,在粉体表面产生与粉体质量流量间有一确定关系的极化电荷,测量过程不影响流体在管道中的流动状态,测量装置简单,耐用,可直接得到质量流量输出,因此特别适合于工业过程控制。     

张北县自然环境及其合理开发利用

张北县位于河北省西北张北高原的南部,约北纬40°57'-41.32',东经114°9'-115°26'之间,北连沽源、康保、商都,西邻尚义,南面与崇礼,万全接壤.总面积4251平方公里.约占张北高原总面积的五分之一.县南界为坝头的一段.该县东南距海约500公里,并有山脉阻障;西北则与内蒙古高原连成一片,地面较为坦荡,这样的地理位置也就形成了该县独特的自然地理环境.     

Tunable terahertz transmission behaviors and coupling mechanism in hybrid MoS2 metamaterials

A hybrid metamaterial with the integration of molybdenum disulfide(MoS₂)overlayer is proposed to manipulate the terahertz(THz)wave.The simulated results indicate that the introduction of MoS₂ layer could significantly modify the resonant responses with large resonance red-shift and bandwidth broadening due to the depolarization field effect,especially for the structure on the small permitivity substrate.Additionally,the wide-band modulator in off-resonant region and a switch effect at resonance can be achieved by varying the conductivity of MoS₂ layer.Further theoretical calculations based on the Lorentz coupling model are consistent with the simulated results,explicating the response behaviors originate from the coupling between MoS₂ overlayer and the metastructure.Our results could provide a possibility for active control THz modulator and switchable device based on the MoS₂ overlayer and advance the understanding of the coupling mechanism in hybrid structures.