一种共享份分块构造的异或区域递增式视觉密码方案

该文依据授权子集的个数将共享份划分若干块,按照共享份分块构造的设计思路,结合(n, n)异或单秘密视觉密码的加密矩阵,构造了异或区域递增式视觉密码的秘密分享与恢复流程。与现有方案相比,该方案可以实现解密区域图像的完全恢复,且明显减小了共享份的大小。     

红土镍矿为原料制备白炭黑的最佳工艺研究

以红土镍矿为原料,采用碱熔融-碳酸化分解方法制备出白炭黑产品。通过正交试验L₉(3⁴),找到碱熔融反应的最佳工艺条件：碱矿质量比150/50,反应温度823 K,反应时间3.5 h,原料粒度1.704 μm。该条件下放大试验二氧化硅转化率为79.10%。浸出液经碳酸化分解制得白炭黑产品符合国家HG/T3065-1999标准。碳酸化分解后所得溶液经苛化工艺实现碱和二氧化碳的循环利用。     

High-Q microresonators on 4H-silicon-carbide-oninsulator platform for nonlinear photonics

The realization of high-quality (Q) resonators regardless of the underpinning material platforms has been a ceaseless pursuit, because the high-Q resonators pro...     

A Novel Human Antibody,HF, against HER2/erb-B2 Obtained by a Computer-Aided Antibody Design Method

Fully human antibodies have minimal immunogenicity and safety profiles. At present, most potential antibody drugs in clinical trials are humanized or fully human. Human antibodies are mostly generated using the phage display method (in vitro) or by transgenic mice (in vivo); other methods include B lymphocyte immortalization, human–human hybridoma, and single-cell polymerase chain reaction. Here, we describe a structure-based computer-aided de novo design technology for human antibody generation. Based on the complex structure of human epidermal growth factor receptor 2 (HER2)/Herceptin, we first designed six short peptides targeting the potential epitope of HER2 recognized by Herceptin. Next, these peptides were set as complementarity determining regions in a suitable immunoglobulin frame, giving birth to a novel anti-HER2 antibody named “HF,” which possessed higher affinity and more effective anti-tumor activity than Herceptin. Our work offers a useful tool for the quick design and selection of novel human antibodies for basic mechanical research as well as for imaging and clinical applications in immune-related diseases, such as cancer and infectious diseases.     

论细胞神经网络的理论基础

本文详细讨论了由美国伯克莱加利福尼大学电子学家L.O.Chua教授等首创的细胞神经网络理论基础,具体指出了其存在的缺陷及所构造的能量函数用来研究稳定性失效的原因,建议了理论研究的进一步方向。     

低速高混合比水平气力输送临界速度

通过分析水平气力输送系统悬挂式电子称量装置的固体物料输送量记录曲线,判定了输送状态的稳定性.进而提出了中细颗粒(d_s ≤ 0.5mm)、高混合比(μ_s=30~150)、水平低速(u_g<15m/s)输送临界速度的经验关联式。     

探讨建立科技发展贡献评价指标体系的思路

探讨了建立科技发展贡献指标体系的原则.对建立该体系的可用方法:\     

电敏感区法在非金属夹杂物在线检测中应用

针对以往夹杂物检测方法离线的弊端,给出了一种新颖的在线检测方法——电敏感区在线检测法,并分别在冷态下(电解质溶液)及热态下(铝液)进行了夹杂物测试。试验证明,将电敏感区法应用于导电液体中非导电夹杂物在线实时测试,所提技术方案是可行的。     

BIM技术在超高层寺庙建筑中的应用

太平报恩寺作为超高层寺庙,其建筑造型独特、布局新颖,项目设计、佛像制作、现场施工重难点多,利用BIM技术攻克项目实施过程中的各类难题很有帮助。本文围绕太平报恩寺重建项目6个主要重难点,探讨了BIM技术在超高层寺庙建筑中的应用,为其他类似项目提供一定的有利参考。