A Shadow Detection Algorithm Research Based on HSV Space Features and Texture Features

为了提高检测和跟踪算法的准确性,提出了一种基于阴影在HSV空间下的特点和纹理特征的阴影检测与去除算法。该算法针对阴影区域覆盖的地面和未被阴影区域覆盖的地面纹理特征基本不变的特点,先检查序列图像中的运动区域,然后在运动区域内,根据阴影在HSV空间下的特点和纹理特征对阴影进行检测与去除,为运动目标的后续处理排除阴影干扰。实验结果表明,该算法能够很好地抑制噪声,有效检测、去除图片中运动目标的阴影。In order to improve the accuracy,this paper proposes a shadow detection and removal algorithm based on the features of HSV space and texture.Either the area is covered by the shadow or not,it always has the same texture feature.Based on this point,the algorithm firstly detect the moving area in series images,and then in moving area,based on the different characteristics of shadow when in HSV space and its texture feature,it is detected from the moving target and it is removed disturbance for the following processing.Experimental results show that the proposed algorithm can detect the noise and shadow and remove them effectively

HepG2细胞中与戊型肝炎病毒衣壳蛋白相互作用蛋白的初步研究

利用重组戊型肝炎病毒(HEV)衣壳蛋白片段p239(368~606 aa)形成的类病毒颗粒作为亲和层析诱饵蛋白,HepG2为细胞模型,筛选与p239类病毒颗粒特异性相互作用蛋白。经过二维电泳分离,MALDI-TOF-MS分析鉴定得到GRP78/Bip,HSP90,alpha-tubulin及P43四个与p239有相互作用的候选蛋白。GRP78/Bip为热休克蛋白家族成员,体外免疫共沉淀实验结果证实,其与p239有特异性的结合。此研究结果为深入研究HEV的感染过程如吸附、入胞,以及HEV的致病机理提供了有益线索

Research on Benefit Assessment of Ecological Compensation for Collective Non-commercial Forest in Natural Forest Protection Regions of Western China——Taking Yulong County in Yunnan, Xiuwen County in Guizhou and Jingbian County in Shanxi as Examples

文章从经济效益、社会效益、生态效益3个方面构建西部天保工程区集体公益林生态补偿效益评价指标体系,运用层次分析法的基本原理,对综合评价模型中的距离函数模型及指标量化方法进行分析。并结合西部天保工程区集体公益林生态补偿效益评价特点,构建和确定各层次判断矩阵及各指标权重。同时依据综合距离值的计算方法,说明判断集体公益林生态补偿效益高低的标准。以云南省玉龙县、贵州省修文县、陕西省靖边县为例,采用层次分析法对集体公益林生态补偿效益进行评价。评价结果显示：玉龙县、靖边县集体公益林生态补偿效益处于较高水平,修文县集体公益林生态补偿效益处于一般水平。针对存在的问题,提出提高案例县集体公益林生态补偿效益的建议。From the 3 aspects of economic benefits, social benefits and ecological benefits, the indicator system is for evaluating benefits of ecological compensation for the collective non-commercial forest in natural forest protection regions of western China. It analyzed the Distance Function Model and Indicator Quantitative Method by Analytic Hierarchy Process principle. Combining the characteristics of non-commercial forest ecological compensation forest benefit evaluation, it built judgment matrix of each level and determined the weight of each indicator. On the basis of calculating comprehensive distance value, it illustrated the standard to judge the benefits of ecological compensation for collective non-commercial forest. Taking Yulong County in Yunnan, Xiuwen County in Guizhou and Jingbian County in Shaanxi as examples, it adopted Analytic Hierarchy Process（AHP） principle to evaluate the benefits of ecological compensation for collective non-commercial forest. The evaluation results show that the benefits of ecological compensation for collective non- commercial forest in Yulong County and Jingbian County are at higher levels, but that in Xiuwen County is in the general level. Finally, it put forward some suggestions for improving the benefits of ecological compensation for collective non-commercial forest in case-counties based on their existing problems.国家自然科学基金资助项目“西部集体林区后天保工程时期的生态补偿机制研究”（编号：71273215）致谢：云南省玉龙县、贵州省修文县、陕西省靖边县林业局提供资料并给予帮助,在此表示感谢

Grp78/Bip介导戊型肝炎病毒衣壳蛋白对宿主细胞的吸附

目的探讨Grp78/Bip在戊型肝炎病毒(HEV)衣壳蛋白进入宿主细胞过程中的作用。方法采用pull-down和免疫共沉淀技术进一步验证p239与Grp78/Bip的相互作用;采用激光共聚焦显微镜技术检测p239与细胞膜表面Grp78/Bip共定位情况;采用原核表达纯化的Grp78/Bip蛋白封闭p239的Grp78/Bip结合位点,检测其阻断p239吸附细胞的效果。结果p239与Grp78/Bip可以直接结合,而且这种结合是可逆的生理性结合;p239与Grp78/Bip在细胞膜上存在部分共定位;Grp78/Bip能部分阻断p239对肝细胞的吸附。结论Grp78/Bip参与并介导HEV衣壳蛋白对宿主细胞的吸附

重组戊型肝炎病毒衣壳蛋白p239特异性吸附、侵入HepG2细胞并阻断野病毒对肝细胞的感染

By using Western blot and immunofluorescence assays,the recombinant HEV capsid protein p239 was found specifically attached to the HepG2 cell surface and entered to the cytoplasm with the increase of incubation temperature.Pre-mixture of wild-type HEV with p239 blocked the infectivity of the virus on primary cultured human hepatocytes and HepG2 cells,indicating that p239 and HEV competed the same targeting site on these cells.These data provide evidence that p239 has a similar cell surface structure with wild-type HEV

艾灸干预胃溃疡大鼠胃黏膜脑肠肽的动态表达

目的:观察艾灸干预胃溃疡大鼠胃黏膜相关脑肠肽的动态表达,探讨艾灸干预胃溃疡的时效关系。方法:SD大鼠72只随机分为3批,各批分为正常组、模型组、胃经穴位组和非经穴位组(n=6)。采用70%乙醇灌胃复制胃溃疡大鼠模型。胃(非)经穴位组的大鼠进行艾灸1、4、7d(30min/d)。干预结束后于光镜下观察胃黏膜形态,RT-PCR测定胃黏膜增殖细胞核抗原(PCNA)及P物质(SP)表达。结果:与正常组比较,模型组大鼠胃黏膜溃疡灶明显,胃黏膜PCNA表达降低(P<0.05),SP表达升高(P<0.05);与模型组比较,干预1d后胃经穴位组大鼠胃黏膜PCNA表达升高(P<0.05),干预4d后胃经穴位组PCNA表达升高(P<0.05),SP降低(P<0.05);干预7d后各组大鼠胃黏膜PCNA及SP表达无显著差异。结论:艾灸胃经穴位能有效调节相关脑肠肽指标,促进胃黏膜损伤修复,并具有一定的时效关系。深圳创新科技计划项目(No.JCYJ20160406140612883);;国家自然科学基金项目(No.81473751);;国家重点基础研究发展计划(973计划)(No.2015CB554502)~

含砷废物的无害化处理

自然和人为原因导致的砷污染对人类健康造成巨大威胁。将含砷废物中的不稳定、易溶的砷转化为化学性质稳定、不易溶的固体物质进行安全堆存,是目前最可行的处理方式。本文介绍了对砷的无害化处理过程中涉及的三价砷氧化、溶解砷固定化的各种技术,并对相关技术的未来发展趋势进行了评述和展望

含砷废物的无害化处理

自然和人为原因导致的砷污染对人类健康造成巨大威胁。将含砷废物中的不稳定、易溶的砷转化为化学性质稳定、不易溶的固体物质进行安全堆存,是目前最可行的处理方式。本文介绍了对砷的无害化处理过程中涉及的三价砷氧化、溶解砷固定化的各种技术,并对相关技术的未来发展趋势进行了评述和展望

含砷废物的无害化处理

自然和人为原因导致的砷污染对人类健康造成巨大威胁。将含砷废物中的不稳定、易溶的砷转化为化学性质稳定、不易溶的固体物质进行安全堆存,是目前最可行的处理方式。本文介绍了对砷的无害化处理过程中涉及的三价砷氧化、溶解砷固定化的各种技术,并对相关技术的未来发展趋势进行了评述和展望

一种经济可行的远程实时监测系统

本文主要介绍了一种基于TI公司MSC1210的经济可行的对前端电源模拟量的远程实时监测系统,在监测频率要求不高的情况下,可以取代NI的6133数据采集系统