一种遥感图像融合增强的实现方法

本发明涉及一种遥感图像融合增强的实现方法，包括以下步骤：将选取的多光谱遥感影像与全色波段影像进行配准；将多光谱遥感影像的波段进行LBV数据变换，得到处理后的L、B、V图像；将处理后的L、B、V图像作为三个分量，将代表普通辐射水平的L当作I分量和V分量，选择进行IHS变换融合、IHS变换同小波变换相结合的融合以及HSV变换同小波变换相结合的融合；通过肉眼观察最后的图像融合结果是否满意；采用多种评价标准对结果图像进行评价。本发明方法采用了利用多个光谱波段进行数据变换的LBV数据变换方法，使图像光谱信息更加丰富，突破了以往传统的图像融合方法只利用3个光谱波段与高分辨率图像进行融合的局限，是对传统融合方法的一大突破。

鸟类物种的多样性及其保护管理

加强鸟类物种多样性的保护管 理$ 把我国建设成为绿树葱郁& 空气清 新&鸟语花香$人与自然和谐相处的美好 家园%

月湖底栖动物的空间格局及其对水草可恢复区的指示

底质适宜是富营养湖泊恢复沉水植物(水草)的重要前提。大型底栖动物可综合指示底质的污染程度,于2002~2003年在武汉月湖开展了底栖动物水平分布对水草可恢复区指示作用的研究。首先通过月湖底栖动物与环境的相关分析,选择颤蚓科寡毛类作为底质营养状况的指示类群,然后利用同类湖泊群颤蚓与水草数据分析阈值,初步确定颤蚓密度≤100 ind/m2的底质适合水草生长,最后绘制月湖颤蚓分布的水平等值线,显示水草恢复的合适区域。在此基础上构建了应用底栖动物空间格局指示水草恢复区的技术原理框架。

Molecular cloning and characterization of carp (Cyprinus carpio L.) CD8 beta and CD4-like genes

Partial cDNA sequences of both CD8 beta and CD4-like (CD4L) genes of common carp (Cyprinus carpio L.) were isolated from thymus cDNA library by the method of suppression subtractive hybridization (SSH). Subsequently the full length cDNAs of carp CD8 and CD4L were obtained by means of 3' RACE and 5' RACE, respectively. The full length cDNA of carp CD8 is 1164 bp and encodes 207 amino acids including a signal peptide region of 24 amino acids, a transmembrane region of 23 amino acids from aa 167 to aa189 and an immunoglobulin V-set from aa 19 to aa 141. Similar to other species CD8 beta s,carp CD8 beta also lacks p56(lck) domain in the cytoplasmic region. The full length cDNA of carp CD4L is 2001 bp and encodes 458 amino acids including four immunoglobulin (Ig)-like domains in the extracellular region, a transmembrane region of 23 amino acids at the C-terminal region from aa 402 to aa 424 and a cytoplasmic tail. Similar to mammalian, avian CD4s and fugu CD4L, carp CD4L also has the conserved p56(lck) tyrosine kinase motif (C-X-C) in the cytoplasmic region. RT-PCR analysis demonstrated that carp CD8 beta and CD4L genes were both expressed predominantly in thymus. The results from this study can be used to understand the evolution of both the CD8 beta and CD4 molecules which can be used as markers for cytotoxic and helper T cells in carp. (c) 2007 Published by Elsevier Ltd.

静水池主动式气动型波能转换模拟实验装置

本文介绍广州能源研究所建造的静水池主动式气动型波能转换模拟实验装置。在静水池中，将波能转换装置悬吊在钢索下，由一可变半径的曲柄机构带动，相对静水面上下作简谐运动，获得相对的波浪运动效果。可进行不同波况下的气室性能试验、空气涡轮性能试验和波力空气涡轮发电装置综合性能试验。该装置近似岸式或锚泊固定式气动型波能转换装置的工作过程，具有结构简单、实用、造价低的特点。文章还对国外各种波能转换模拟实验装置作了简介分析。

Fermi-Level Pinning at Metal/High-k Interface Influenced by Electron State Density of Metal Gate

The Fermi-level pinning (FLP) at the metal/high-k interface and its dependence on the electron state density of the metal gate are investigated. It is found that the FLP is largely determined by the distortion of the vacuum level of the metal which is quantitatively ruled by the electron state density of the metal. The physical origin of the vacuum level distortion of the metal is attributed to an image charge of the interface charge in the metal. Such results indicate that the effective work function of the metal/high-k stack is also governed by the electron state density of the metal.