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Remote sensing image encryption algorithm utilizing 2D Logistic memristive hyperchaotic map and SHA-512

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Science China(Technological Sciences) 2024年第5期67卷 1553-1566页

作者： LAI Qiang liu yuan YANG Liang School of Electrical and Automation Engineering East China Jiaotong UniversityNanchang330013China

The two-dimensional Logistic memristive hyperchaotic map(2D-LMHM)and the secure hash SHA-512 are the foundations of the unique remote sensing image encryption algorithm(RS-IEA)suggested in this *** proposed map is formed from the improved Logistic map and the memristor,which has wide phase space and hyperchaotic range and is exceptionally excellent to be utilized in specific *** proposed image algorithm uses the permutation-assignment-diffusion *** generates two position matrices in a progressive manner to achieve an efficient random exchange of pixel positions,assignment is carried through on the image pixels of the permutated image to entirely remove the original image information,strengthening the relationship between permutation and diffusion,and loop diffusion in two different directions can use subtle changes of pixels to affect the whole *** random key and plain-image SHA-512 hash values are used to produce an additional key,which is then utilized to figure out the permutation parameters and the initial value of a chaotic *** experimental results with the average NPCR=99.6094%(NPCR:number of pixels change rate),average UACI=33.4638%(UACI:unified average changing intensity),100%pass rate of the targets in the test set,the average correlation coefficient is 0.00075,and the local information entropy is 7.9025,which shows that the algorithm is able to defend against a variety of illegal attacks and provide more trustworthy protection than some of the existing state-of-the-art algorithms.

关键词： chaos memristive hyperchaotic map remote sensing SHA-512 image encryption RS-IEA

Performance of Flexible Warp Knitting Metal Mesh with Notch

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Journal of Donghua University(English Edition) 2014年第5期31卷 582-588页

作者： SHAO Guang-wei JIANG Jin-hua PAN Qiao-ling liu yuan-yuan CHEN Nan-liang College of Textiles Donghua University Shanghai 201620 China Engineering Research Center of Technical Textiles Ministry of Education Donghua University Shanghai 201620 China Research Institute of Donghua University Shanghai 201620 China

Three different kinds of notch involving single edge notch （ SEN）, double edge notch （ DEN ） and central notch （ CEN ） were preset in flexible warp knitting metal mesh, and the tensile properties of notch samples were tested. Three kinds of notch samples＇ sensitivity were investigated through different notch lengths. Then failure process and tensile properties were contrasted and analyzed between intact and notch samples. Experiment and analysis results showed that positive Poisson＇s ratio effect gave rise to obvious waist binding and special inverted triangle loading area. All samples were sensitive to three kinds of notches. And notch sensitivity was closely related to notch form and notch length. The notch procession obviously deteriorated the mechanical properties of flexible warp knitting metal mesh. Sample with different notch lengths and breakage locations determined different tensile strengths that sample could bear. The fitting function of waist binding track satisfied the parabolic equation.

关键词： warp knitting metal mesh notch sensitivity tensilestrength preset notch stainless steel wire

Simultaneous measurement of distance and speed using frequency-modulated continuous-wave self-mixing interferometry and all-phase fast Fourier transform

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Chinese Optics Letters 2024年第7期22卷 29-34页

作者： Jinyuan yuan Bin liu School of Physics and Optoelectronics Xiangtan UniversityXiangtan 411105China SECTE University of WollongongWollongong NSW 2522Australia

In this work,we propose a method using frequency-modulated continuous-wave(FMCW)self-mixing interferometry(SMI)and all-phase fast Fourier transform(APFFT)for simultaneous measurement of speed and *** offers superior accuracy in frequency determination by mitigating issues like the fence effect and spectrum leakage,contributing to the high-accuracy measurement for speed and *** simulations and experiments have demonstrated relative errors at the levels of 10^(−4) and 10^(−3) for distance and speed measurements,***,factors impacting measurement performance have been *** proposed method provides a high-performance and cost-effective solution for distance and speed measurements,applicable across scientific research and various industrial domains.

关键词： self-mixing interferometry frequency-modulated continuous-wave interferometry all-phase fast Fourier transform measurement of distance and speed.

基于非靶向代谢组学探讨不同体型成年犬的代谢特征及差异

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赣南医学院学报 2024年第5期44卷 478-487,514页

作者：李晏姗梁梦芸詹艳刘媛媛刘典雨陈芸程旭胡宇峰赣南医科大学赣南创新与转化医学研究院重大疾病新药靶发现及新药创制全国重点实验室赣南医科大学第一附属医院江西赣州341000

目的:探讨不同体型犬之间的代谢特征及差异,为不同体型犬提供更好的健康指导及疾病预防。方法:收集大型犬及小型犬的新鲜血清及血浆样本,部分血液样本进行血常规分析,部分样本在离心分离血浆后进行血生化及非靶向代谢组学检测分析不同... 详细信息

目的:探讨不同体型犬之间的代谢特征及差异,为不同体型犬提供更好的健康指导及疾病预防。方法:收集大型犬及小型犬的新鲜血清及血浆样本,部分血液样本进行血常规分析,部分样本在离心分离血浆后进行血生化及非靶向代谢组学检测分析不同体型犬的代谢特征。通过偏最小二乘判别分析(Partial least squares discriminant analysis,PLS-DA)构建模型,结合模型及变量重要性投影(Variable importance in projection,VIP)筛选差异代谢物。结果:大型犬及小型犬血清生化指标如谷草转氨酶(Aspartate aminotransferase,AST)、总胆红素(Total bilirubin,TBil)、直接胆红素(Direct bilirubin,DBil)、间接胆红素(Indirect bilirubin,IBil)、高密度脂蛋白胆固醇(High density lipoprotein cholesterol,HDL-C)这5种指标差异有统计学意义(P<0.05)。采用血浆非靶向代谢组学分析鉴定出了不同体型犬血浆中存在1277种代谢物,具体分为脂质和类脂质分子,有机酸及其衍生物,杂环有机化合物,苯及其衍生物,有机含氧化合物,苯丙烷类化合物和多酮类化合物,有机氮化合物,核苷、核苷酸和类似物,碱和衍生物9类。生物信息学分析表明,差异代谢物富集在不同的KEGG通路,这些通路包括嘧啶代谢、色氨酸代谢、氨酰-tRNA生物合成、次级胆汁酸生物合成以及精氨酸和脯氨酸代谢。其中氨酰-tRNA生物合成通路最显著且呈上调趋势,因此该通路及通路中的显著差异代谢物L-苯丙氨酸和L-赖氨酸可作为区分大小型犬代谢差异的重要靶点。结论:本研究揭示了不同体型犬之间的代谢差异,为不同体型犬的代谢特征提供了更准确的信息,有助于进一步了解不同体型犬的代谢特征,有助于更科学地饲养和管理。

关键词：犬类体型代谢特征非靶向代谢组学分析

Growth, Gas Exchange, Abscisic Acid, and Calmodulin Response to Salt Stress in Three Poplars

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Journal of Integrative Plant Biology 2006年第3期48卷 286-293页

作者： Yu Chang Shao-Liang Chen Wei-Lun Yin Rui-Gang Wang Yan-Feng liu Yong Shi yuan-yuan Shen Yue Li Jie Jiang Yue liu College of Biological Science and Technology Beijing Forestry University Beijing 100083 China

In the present study, we Investigated the effects of Increaslng sallnlty on growth, gas exchange, absclslc acld （ABA）, calmodulln （CAM）, and the relevance to salt tolerance In seedllngs of Populus euphratlca Ollv. and cutUngs of P. ＂pupularls 35-44＂（P. popularls） and P. x euramerlcana cv. 1-214 （P. cv. Itallca）. The relatlve growth rates of shoot helght （RGR,） for P. cv. Itallca and P. popularls were severely reduced by Increaslng salt stress, whereas the growth reductlon was relatlvely less in P. euphratica. Slmllarly, P. euphratlca malntalned hlgher net photosynthetlc rates （Pn） and unlt transplration rotes （TRN） than P. cv. Itallca and P. popularls under condltlons of hlgher sallnlty. Sallnity caused a slgnlficant increase In leaf ABA and CaM In the three genotypes after the onset of stress, but NaCl-induced ABA and CaM accumulatlon was more pronounced In P. euphratlca, suggeeUng that P. euphratlca plants are more sensitlve in sensing soil salinlty than the other two poplars. Furthermore, P. euphratica maintained relatively higher ABA and CaM concentrations under conditions of high salinity. The higher capacity to synthesize stress signals, namely ABA and CaM, In P. euphratica and the contrlbuUon of this to the salt resistance of P. euphratica are discussed.

关键词： abscisic acid calmodulin gas exchange growth NaCl Populus euphratica.

Susceptibility and tissue specificity of Spodoptera frugiperda to Junonia coenia densovirus

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Journal of Integrative Agriculture 2021年第3期20卷 840-849页

作者： CHEN Zu-wen YANG Yan-chao ZHANG Jian-feng JIN Ming-hui XIAO Yu-tao XIA Zhi-chao liu yuan-yuan YU Sai-zhen YANG Yong-bo WANG yuan LI Yi liu Kai-yu School of Life Sciences Central China Normal UniversityWuhan 430079P.R.China Agricultural Genomics Institute Chinese Academy of Agricultural SciencesShenzhen 518120P.R.China Medical College Hubei University of Arts and ScienceXiangyang 441053P.R.China Hubei Engineering Research Center of Viral Vector Wuhan University of BioengineeringWuhan 430415P.R.China

The fall armyworm,Spodoptera frugiperda,which destroys many economic crops such as rice and maize,has recently invaded *** viruses as biological control agents play important roles in killing *** potential viral insecticide is the environmentally highly infective and virulent *** successfully rescued Junonia coenia densovirus(JcDV)using its infectious clone in different insect cell lines and larvae of three insect *** showed that the lysate of cultured insect cells transfected by the JcDV infectious clone killed the 2 nd instar *** LD50 of homogenate from JcDV-infected Spodoptera litura to the 2 nd instar ***(1.76×10^(8)viral genome copies per larva during 10 d post infection)was higher than that of the 2 nd instar ***(7.39×10^(7)Jc DV genome copies)or Helicoverpa armigera larvae(9.71×10^(7)JcDV genome copies).The LT50 of the *** homogenate(2.60×10^(9)viral genome copies each larva)to the 2 nd instar *** was 6.96 d,longer than that of the ***(6.18 d)or the 2 nd instar ***(5.94 d).JcDV could infect the fat body of ***,but not *** or *** JcDV can infect all three lepidopteran species,their susceptibility to the virus *** has great potential as a biological control agent against pests such as ***.

关键词： Spodoptera frugiperda Junonia coenia densovirus rescue of virus susceptibility biological control

Effect of heat treatment on microstructure and mechanical properties of selective laser-melted PH13-8Mo stainless steel

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Journal of Iron and Steel Research International 2024年第4期31卷 945-955页

作者： yuan Zhang Xiang liu Chang-jun Wang Chang liu School of Material Science and Engineering Kunming University of Science and TechnologyKunming 650093YunnanChina Central Iron&Steel Research Institute Co. Ltd.Beijing 100081China

PH13-8Mo stainless steel powder with high sphericity and well fluidity was prepared by the plasma rotating electrode *** formed parts with ultra-high purity were manufactured by selective laser *** tensile and impact mechanical properties of the printed parts under three heat treatment regimes were compared to those without heat *** microstructure,grain orientation and phase composition were characterized by electron-backscatter diffraction,X-ray diffraction and transmission electron *** characterization results reveal that the addition of heat treatment makes the grains enlarge,and after different heat treatments,the average grain size from 1.51μm in the printed state increases to 2.78,3.09 and 2.06μm,*** formed parts are mainly composed of martensite and retained ***,the NiAl and M23C precipitates form,which are the major strengthening phases of PH13-8Mo stainless *** optimal heat treatment process is 925℃×1 h water cooling(WC)+0℃×2 h air cooling(AC)+540℃×4 h *** this heat treatment process,PH13-8Mo formed parts have the optimal comprehensive mechanical properties:the tensile strength,yield strength and impact energy KU2 are 1492 MPa,1432 MPa and 63 J,*** strengthening and toughening via heat treatment are mainly attributed to dislocation strengthening,the formation of NiAl and M23Co precipitates and the change of volume fraction of the retained austenite.

关键词： High-strength stainless steel-Selective laser melting-Heat treatment Microstructure Mechanical property

Research on Rapid Initial Adaption to the Environment of a Plateau

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Biomedical and Environmental Sciences 2016年第9期29卷 683-685页

作者： WANG Bin Hua CAO Zheng Tao WU Feng YANG Jun liu yuan yuan YU Meng Sun School of Control Science and Engineering Shandong University Academician Center Aviation Medicine Institute

We designed two types of pre-adaption plans for this study. One was a pre-adaption training with progressive intermittent hypoxia, with a constant lower pressure oxygen tank used in the plain before arriving at the plateau （PG）. The other was by progressively increasing the time of exposure to hypoxia with oxygen supplied in stages after radical plateau （RG）. By testing the blood oxygen saturation （SpO2）, heart rate （HR）, and quality of sleep after arriving at the 3800 m high plateau, results showed that the pre-acclimatization and radical groups performed better than the control group （CG）. Both strategies were equivalent in terms of effects and principles in providing more flexible choices for acclimatization.

关键词： Research on Rapid Initial Adaption to the Environment of a Plateau than body

Protective Effects of Shikonin on Brain Injury Induced by Carbon Ion Beam Irradiation in Mice

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Biomedical and Environmental Sciences 2015年第2期28卷 148-151页

作者： GAN Lu WANG Zhen Hua ZHANG Hong ZHOU Rong SUN Chao liu Yang SI Jing liu yuan yuan WANG Zhen Guo Department of Heavy Ion Irradiation Medical Institute of Modern Physics Chinese Academy of Sciences Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences Key Laboratory of Heavy Ion Radiation Medicine of Gansu Province Life Science School Yantai University School/Hospital of Stomatology Lanzhou University

Radiation encephalopathy is the main complication of cranial radiotherapy. It can cause necrosis of brain tissue and cognitive dysfunction. Our previous work had proved that a natural antioxidant shikonin possessed protective effect on cerebral ischemic injury. Here we investigated the effects of shikonin on carbon ion beam induced radiation brain injury in mice. Pretreatment with shikonin significantly increased the SOD and CAT activities and the ratio of GSH/GSSG in mouse brain tissues compared with irradiated group （P〈0.01）, while obviously reduced the MDA and PCO contents and the RO$ levels derived from of the brain mitochondria.

关键词： Protective Effects of Shikonin on Brain Injury Induced by Carbon Ion Beam Irradiation in Mice GSH SOD