一维二元光子晶体滤波特性研究     

汤炳书  刘丽丽  丁红星  周艳玮  杨昭  徐健良 《连云港师范高等专科学校学报》2006,(1):104-108

把一维时域有限差分方法用于一维二元光子晶体的滤波特性研究,数值模拟多种因素对一维二元光子晶体的滤波特性的影响,结果表明组成一维二元光子晶体的折射率、厚度、层数、入射角、光源的偏振态等都对滤波特性有影响,掺杂层位置、厚度、电磁参数都能调节其偏振滤波特性。  相似文献   

水杨酸铁的流变相合成和红外光谱   总被引：1，自引：0，他引：1  

冯致云李良超  苏克新 《荆门职业技术学院学报》2001,16(3):64-65

用流变相反应法合成了水杨酸铁配合物，对样品在4000—400cm^-1。范围内的主要红外光谱吸收峰进行了归属，通过元素分析、TG和IR确定该配合物的组成为Fe(HSal)3．3H2O(HSal=O-OHC6H4CO2)。  相似文献   

联苯型二氮杂17—冠—5的质谱研究(英文)     

刘刚 《怀化学院学报》1995,(5)

本文研究了冠醚化分物2,3,4,5—二(1’,2’—苯)—9.15—二对甲苯磺酰基—9.15—二氮杂—1.6,12,—三氧杂环十七—2.4—二烯(M)在电子轰击下分子裂解方式。在电子轰击下,大环(M)上所连的对甲苯磺酰基以及环上的键发生断裂产生亚稳离子,推导了m/z593,495,439,341,212,198,181,168等的亚稳态离子的结构。  相似文献   

自聚焦克尔类电介质中非傍轴光束调制非稳的研究     

冯敏  薛云  卫青  施解龙 《上海大学学报(英文版)》2004,8(2):159-163

Propagation stability of non-paraxial beam in nonlinear Kerr media is investigated with a linear stability method.Both theoretical analysis and numerical simulation show that modulation instability(MI) gain spectrum has three different distribution features determined by the times of incident power P0 and the non-paraxial parameter a. Furthermore,the corresponding criterion is put forward to distinguish the three different distributions.  相似文献   

苯甲酸分子的简正振动与拉曼光谱   总被引：1，自引：1，他引：0  

韩礼刚  陶亚萍 《洛阳师范学院学报》2011,30(11):20-22

利用量子化学软件计算得出了苯甲酸分子的平衡构形,基于这个构形,理论上计算出了苯甲酸分子的简正振动光谱,并与实验测得的结果进行了比较,最后对其简正振动模式进行了全面归属.  相似文献   

家长问卷区分自闭症谱系障碍儿童功能的探索     

周念丽  方俊明 《中国特殊教育》2011,(11)

通过家长问卷筛查自闭症谱系障碍儿童是为常见,然运用问卷来区分功能则,本研究欲探索其可能性.结合我国社会文化编制了用于甄别自闭症谱系障碍儿童和区分其功能的家长访谈问卷,并运用该问卷对全国11个城市的2901名1-6岁普通儿童和119名自闭症谱系障碍儿童家长进行了实际调查.调查结果表明,运用该问卷既可甄别又可有效地区分自闭症谱系障碍儿童不同功能.说明运用家长问卷甄别与区分自闭症谱系障碍儿童的功能具有可行性.  相似文献   

自闭症谱系障碍儿童睡眠问题的研究:回顾及思考     

卢茜  邓猛  梁焕萍 《中国特殊教育》2011,(3)

睡眠问题在自闭症谱系障碍儿童中有高发生率,与他们的核心特征存在错综复杂的关联.睡眠问题属于失眠症的范畴,潜在病原包括神经生物学、心理及行为和家庭环境等因素,对儿童的影响体现在社会交往与沟通、行为表现及认知和个人成长及家庭等方面,现有治疗措施主要有行为干预、药理治疗和其他疗法,最后对自闭症谱系障碍儿童教育与康复提出几点建议.  相似文献   

溴化（E）-1,1′-（六烷-1,6-二甲氨基）二（4-（E）-2-（噻吩基）乙烯基吡啶的合成、表征及光电性质的研究     

王志平  曹宝亮 《集宁师专学报》2011,33(4):18-21

合成和表征了一个新的吡啶衍生物溴化（E）-1,1′-（六烷-1,6-二甲氨基）二（4-（E）-2-（噻吩基）乙烯基吡啶,这是一种自组装膜合成的中间配体,具有特殊的结构特征和氧化还原性,以其为配体继续合成自组装膜材料,在共价和静电自组装膜研究的领域有很高的研究价值,本文对它的合成、表征及其紫外可见光谱和荧光光谱等的性质作一研究。  相似文献   

一种基于能量谱葡萄糖浓度检测新方法的研究     

葛学峰  赵志敏  任峰  和儒辉 《南京晓庄学院学报》2011,(6):1-3

葡萄糖浓度检测在治疗糖尿病过程中起着重要作用,采用近红外光谱方法测量葡萄糖浓度是国内外研究的热点．通过实验的方法,用800nm到1600nm的近红外光照射葡萄糖水溶液,对不同葡萄糖浓度对应的能量谱进行分析,发现在1111nm处的吸收峰特征比较明显,与葡萄糖浓度有着对应的关系,通过指数曲线拟合,建立葡萄糖浓度检测的数学模型．  相似文献   

Unexpected changes of itinerary – adaptive functioning difficulties in daily transitions for adults with autism spectrum disorder     

Ewelina Rydzewska 《欧洲特需教育杂志》2016,31(3):330-343

Adaptive functioning skills, also known as adaptive behaviours, refer to a multifaceted concept defined as behaviours necessary for age-appropriate, independent functioning in social, communication, daily living or motor areas. In light of the growing population of children with ASD who will eventually become adults, increased understanding of adaptive functioning during the transition to adulthood is of importance, but current research in this area lacks first-hand evidence presenting adaptive skills difficulties among older adolescents and adults with ASD. This article focuses on adaptive functioning skills in daily transitions for adults with Asperger’s syndrome (AS) or high-functioning autism (HFA). It draws on evidence from 12 interviews with individuals on the autism spectrum age 16–43, and 2 focus groups with 8 family members of people affected by ASD. Particular emphasis is placed on impact of adaptive functioning difficulties on well-being and quality of life for adults with ASD. Grounded theory approach has been used to analyse the gathered data. Interviewees reflected on daily challenges associated with unexpected changes in routine, sensory difficulties and social interactions. These in turn had an impact on their adaptive functioning skills by introducing complications in the process of making transitions between different contexts and decreasing interviewees’ ability to tackle challenges of daily life. Importance placed on societal expectations towards meeting bespoken standards and conforming to norms ruling the structure and interactions of daily life were also widely discussed. Frequently such expectations did not allow for factoring in the developmental nature of ASD and related difficulties, which as a result triggered additional complexity in managing daily transitions for adults on the spectrum. Further research addressing adaptive functioning skills in daily transitions for adults with ASD is needed.  相似文献