一种增加LSB信息隐藏量的方法

LSB(Least Significant Bits)算法是信息隐藏的基础方法之一。通过对人眼视觉感知效果的分析,对 LSB 算法进行改进,提出了一种具有更高信息隐藏量的算法。该算法简单高效,信息隐藏率由12.5%提高到16.7%,且通过 VC 编程试验验证了该算法的优越性。     

老年休闲绿地色彩设计——以北京两种形式老年活动场所为例

分析色彩与心理的相互作用,结合老年人的身心特征,认为老年人对环境色彩需求的规律表现为多运用暖色调、高明度对比色调以及五行色,且根据不同类型功能的场合使用兴奋色、沉寂色、前进色、后退色。实地考察了中国古典风格和现代风格两种不同形式的老年活动场所,分析其附属休闲绿地的色彩运用现状,并针对其缺陷提出一些具体建议。研究结果可为老年公寓、老年社区以及老年公园的绿地建设提供指引,以期为老年人营造出一个安全、舒适、健康的户外休闲场所。     

进口小麦中超标麦角的色选机剔除处理技术初探

通过色选机对进境小麦麦角超标进行加工处理,以剔除混在进境小麦中的麦角.结果显示:色选机可以剔除大部分麦角,使其含量降至国家标准以内.我们推荐参数(使用布勒-SORTEX B色选机时)为:小麦流量不超过设计产能80％,色选机初选异色剔除粒、疵点剔除粒分别设定为55％、50％,色选机复选异色剔除粒、疵点剔除粒分别设定为50...     

粘粒含量——夏季风的良好替代指标

通过对位于东亚季风区尾闾部位的沙沟剖面、东部半湿润区王官剖面、东部湿润区扣马剖面的气候代用指标的分析发现 ,黄土地层中 <5 μm的粘粒含量指标对各剖面中黄土-古土壤序列指示得比较清晰 ,可以较好地反映东亚夏季风的变化。对黄土地层中粘粒含量的测试及其环境意义分析以及与经典的东亚夏季风的替代指标———磁化率、红度指标 (a )的对比分析发现 ,粘粒含量指标的意义比较明确 ,适应范围更广 ,灵敏性也较高 ,是一比较可靠的、新的东亚夏季风的良好替代指标。     

Evaluation of Egg White Protein-Based Coatings to Improve the Protection of Frozen Atlantic Salmon (Salmo salar)

ABSTRACT

The effects of different egg white protein coatings on Atlantic salmon quality preservation after 4 months of frozen storage were evaluated. These coatings increased the yield of the fillets and protected them from lipid oxidation, providing better protection than glazing. Egg white protein coatings were better options than glazing to preserve salmon color during frozen storage. The best results were obtained with the application of coatings before freezing. No clear effects of the type and concentration of plasticizer in most quality parameters were found. Egg white protein + glycerol 2:1 applied before freezing was the best coating for frozen Atlantic salmon protection.     

彩色多普勒能量图与彩色多普勒血流图诊断肝血管瘤效果的比较

目的 :比较彩色多普勒能量图 (CDE)与彩色多普勒血流图 (CDFI)诊断肝血管瘤的效果。方法 :用 CDE与CDFI观察 2 8例 (36个 )肝血管瘤内的血流情况 ,比较两者的血流显示率。结果 :CDE和 CDFI对肝血管瘤内血流的显示率分别为 94.4%和 2 8.9% ,两者差异有非常显著性 (P<0 .0 1)。结论 :CDE对肝血管瘤的敏感性明显高于 CDFI,表明CDE对肝血管瘤的诊断及鉴别诊断有较大的应用价值。     

^60Co—γ射线诱发的籼型温敏核不育水稻叶色突变系变异分析

＾６０Ｃｏ－γ射线诱发的８个灿温敏核不育系水稻叶色突变系可分为三种类型,即叶色突变高温表达型、低温表达型及温钝型。     

超大型珍珠生长、色泽与环境因子的关系研究

对55个不同地域的珍珠养殖基地的水质、底泥、珍珠色泽调查结果进行生物学分析与统计。结果表明：浅色珠是我国淡水珍珠的主流;三角帆蚌（Hyriopsis cumingii）分泌浅色珠珠质的能力较强,平均月产珠量达0．70g／只;水体中元素的含量与底泥中的元素的含量基本呈正相关;珍珠的呈色与水体中不同元素的含量直接相关。     

COLOR DOPPLER AND DOPPLER SPECTRAL ANALYSIS IN THE SPINAL CORD OF NORMAL DOGS

Doppler ultrasonography of the spinal cord was performed in 34 normal, anesthetized dogs following hemilaminectomy. This study was part of an investigation to evaluate the efficacy of a 21-aminosteroid compound and high dose methylprednisolone for the treatment of spinal cord trauma. Grey-scale images of the canine spinal cord were similar to those described for the spinal cord of people. Doppler waveforms of intraparenchymal spinal arteries exhibited high end diastolic blood flow velocities, indicating low resistance to flow. Doppler values (mean ± SD) for arteries immediately ventrolateral to the central canal were: Peak Systolic Velocity = 5.78 ± 2.5 cm/sec, Minimum Diastolic Velocity = 3.5 ± 1.62 cm/sec, Mean Velocity = 4.45 ± 1.96 cm/sec, Minimum Diastolic Velocity = 3.5 ± 1.62 cm/sec, Mean Velocity = 4.45 ± 1.96 cm/sec, Systolic/Diastolic ratio = 169 ± 0.19, Pulsatility Index = 0.53 ± 0.09, and Resistance Index = 0.4 ± 0.06.