砂质高岭土在玻化砖中应用的研究

本文论述了砂质高岭土在玻化砖中的应用，给出了玻化砖坯体配方、生产工艺参数、晶相组成及其它性能。在现代化生产线上生产了符合国家建材行业标准的玻化砖产品。     

长距离HF射频识别信号检测技术研究与实现

针对UHF频段射频识别（RFID）技术的不足,提出一种长距离HF频段的RFID信号检测方案,重点在于增强灵敏度、提高标签感应距离.先分析标签负载调制的基本原理和反射信号的调制特点,再详细阐述检测通道关键环节设计与实现.     

塔里木盆地哈拉哈塘-哈得地区三叠系克拉玛依组地震沉积学研究

塔里木盆地哈拉哈塘-哈得地区三叠系作为油气显示富集有利层位之一,目前仅对三叠系进行了盆地级的研究,而区带认识不清,层序内部沉积演化不明,对区块勘探指导针对性不强,急需开展区带化研究。利用覆盖全区的高分辨率三维地震资料和岩心、测井资料的基础之上,运用地震沉积学研究方法分析地震属性结构,识别出面积达18 000 km²的哈拉哈塘-哈得地区克拉玛依组沉积相类型和沉积相平面展布范围,从而较准确的描述出其沉积相演化特征,为后续结合区域构造背景和断层分布来预测岩性油气藏分布提供依据。分析表明：塔里木盆地哈拉哈塘-哈得地区三叠系克拉玛依组整体为湖泊-三角洲沉积体系,上下段差异明显。下段砂体由北东向南西逐渐减少,反映河道影响作用减小,牙哈古隆起斜坡处发育三角洲平原亚相,向南西展布依次发育三角洲前缘亚相和湖泊相。克拉玛依组上段湖盆收缩,广泛发育三角洲平原亚相,向南西-西方向过渡为三角洲前缘亚相和湖泊相。其中,在三角洲平原亚相中发育下切谷沉积体系。     

Isolation and genetic characterization of a fragile plant mutant in rice (itOryza sauva) L.

The fragile rice mutant was isolated from an M₂ population of indica variety Shuang Ke Zao (SKZ) treated with g-rays, and designated as fp1 (fragile plant 1) because of its fragile leaves and culms. To map FP1 locus, an F² mapping population was derived from a cross between the fp1 and C-bao, a polymorphic japonic variety. The primary mapping result places the FP1 locus in an interval between two molecular markers, microsatellite marker RM16 (3.1 cM proximal to FP1) and STS marker G144a (9.1 cM distal to FP1) in the centromere region of chromosome 3. A CAPS marker C524a was further developed between RM16 and G144a, with 0.4 cM genetic distances to the FP1locus, providing a practical starting point for constructing a BAC contig spanning the FP1 locus and cloning the fp1 gene. Allelism test demonstrated that fp1 is allelic to bc1, a fragile rice mutant reported previously.     

海南省图书情报学研究样态分析——基于期刊论文发表的实证研究

中国图书情报学研究领域取得了引人瞩目的进展,但区域不平衡现象较为明显,分析 海南省图书情报学研究样态对区域发展与升级具有重要参考价值。通过提取CNKI平台（1988— 2020年）数据,借助文献计量和数据可视化分析方法,对海南省图书情报学领域研究论文发文状 况、研究热点与前沿动向、基金支持、发文机构与核心作者群体及高影响力作者等进行分析,揭示 了海南省图书情报学术研究的发展进程与特征。研究表明海南省图书情报界虽然在实践研究中 形成一批有区域特征的研究成果,但领军团队对学界前沿热点论题涉猎甚少,需要着力推进原创 性理论研究。     

一种基于贝叶斯多分类器组合的视频人脸取证系统设计

 贝叶斯多分类器组合模型可以表示图像间的条件概率和限定语义,并依此预测用户查询和序列图像间的相似度,是解决视频序列图像信息检索的有效手段。为了提高视频人脸取证系统中人脸图像匹配速度和准确度,提出和设计了一种基于贝叶斯多分类器的视频人脸跟踪识别取证系统。给出了系统的总体结构、主要模块的设计,以及采用的关键技术。实验中训练数据为有限的静态人脸图像,测试数据为视频图像序列。实验表明,该系统识别效率高、取证能力强、容错性好,在视频人脸分类中具有较好的效果,为动静结合人脸图像分类提供了一定的依据。     

近红外波段硅基石墨烯电光调制器研究进展

 近红外波段的电光调制器是未来光信号处理和计算系统中的关键功能元器件,硅基石墨烯电光调制器在结构尺寸、调制速率、调制带宽及大规模片上集成等方面具有诸多潜在优点而引起人们的广泛关注和重视。本文介绍了石墨烯的光电特性及光调制机理,结合石墨烯在近红外波段电光调制器中的研究及应用,综述了国内外近红外波段硅基石墨烯电光调制器的研究进展,重点叙述了条形波导结构、谐振结构、纳米梁结构的电光调制器的工作原理及各器件的特性,展望了硅基石墨烯电光调制器的研究方向。     

Mapping and characterization of a tiller-spreading mutant<Emphasis Type="Italic">lazy-2</Emphasis> in rice

Tiller angle of rice is an important agronomic trait that contributes to breed new varieties with ideal architecture. In this study, we report mapping and characterization of a rice mutant defective in tiller angle. At the seedling stage, the newly developed tillers of the mutant plants grow with a large angle that leads to a “lazy“ phenotype at the mature stage. Genetic analysis indicates that this tillerspreading phenotype is controlled by one recessive gene that is allelic to a reported mutant la. Therefore, the mutant was named la-2 and la renamed la-1. To map and clone LA, we constructed a large mapping population. Genetic linkage analysis showed that the LA gene is located between 2 SSR markers RM202 and RM229. By using the 6 newly-developed molecular markers, the LA gene was placed within a 0.4 cM interval on chromosome 11, allowing us to clone LA and study the mechanism that controls rice tiller angle at the molecular level.     

火焰加热玻璃池窑优化的一种途径

本文在分析的基础上指出，用耐热合金钢的空气预热器取代蓄热室，将助燃空气仅仅预热到８００～１０００℃，并用烟气剩余的焓把不合碎玻璃的配合料在窑外预热到开始发生粘结前的温度，是现有火焰加热池窑优化的一种基本途径，它可使火焰加热池窑的熔化率、热效率、炉龄等在现有的基础上得到进一步的提高，同时还能降低窑炉排放粉尘及ＮＯｘ等化合物的浓度，保护环境。     

Non-blocking 2×2 switching unit based on nested silicon microring resonators with high extinction ratios and low crosstalks

In this paper, we propose and demonstrate a 2 × 2 optical Benes switching unit based on two nested silicon microring resonators （MRRs） monolithically integrated on a silicononinsulator （SOI） wafer. High extinction ratios （ERs） of about 44.7/38.0 dB and low crosstalk values of about -37.5/-45.2 dB at cross/bar states are obtained with the fabricated device. The operation principle is theoretically studied and the switching function is verified by system demonstration experiments with 10 and 12.5 Gb/s nonreturntozero （NRZ） signals. The switching speed on the order of gigahertz based on free carrier effect in silicon is also experimentally demonstrated.