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基于数据残留时间的SRAM-PUF预选算法

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电子学报 2024年第5期52卷 1478-1487页

作者：陈泽亮孔德珠尹爱国陈泽福张培勇浙江大学微纳电子学院浙江杭州310000 珠海奔图电子有限公司广东珠海519000

静态随机存取存储器(Static Random-Access Memory,SRAM)物理不可克隆函数(Physical Unclonable Function,PUF)利用参数设计完全相同的晶体管在制造过程中存在的工艺偏差,生成每块芯片无法克隆的密钥响应.由于SRAM-PUF内部错误分布的随... 详细信息

静态随机存取存储器(Static Random-Access Memory,SRAM)物理不可克隆函数(Physical Unclonable Function,PUF)利用参数设计完全相同的晶体管在制造过程中存在的工艺偏差,生成每块芯片无法克隆的密钥响应.由于SRAM-PUF内部错误分布的随机性,密钥重构需要使用纠错码,而纠错电路的面积与其纠错能力呈正相关,为了降低SRAM-PUF错误分布,减小纠错电路面积,本文通过对SRAM数据残留特性的研究,提出一种数据残留预选算法,对SRAM单元进行筛选,提高PUF响应稳定性,使用区块择优算法筛选SRAM区块,减小响应的分散度,以更短的时间和资源消耗生成SRAM-PUF响应,测试结果表明,在不同温度(-40℃~80℃)和±10%电压波动下,256位SRAM-PUF响应拥有99.8%的稳定性及1.9×10^(-8)的误码率,相对于通用的临时多数表决(Temporal Majority Voting,TMV)算法提升了1.7%的稳定性,降低2.1×10^(5)倍误码率,与1000次TMV相比,时间复杂度从O(2000n)线性降低到O(900n).经过72小时老化测试后,采用数据残留算法预选的SRAM-PUF稳定性仅下降0.2%.

关键词：物理不可克隆函数 SRAM 预选算法数据残留临时多数表决

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后腹腔镜手术治疗儿童肾盏憩室2例报告

中华泌尿外科杂志 2024年第5期45卷 393-394页

作者：王馨妍王欣吴勇张东正马雄王聪张振华马宇坤魏宝龙关勇天津市儿童医院(天津大学儿童医院)小儿泌尿外科、天津市儿童出生缺陷防治重点实验室天津300134

儿童肾盏憩室临床少见,国内报道使用后腹腔镜手术治疗儿童肾盏憩室的病例较少本文报道2例肾盏憩室患儿,CT尿路造影显示囊性低密度包块,无明显强化,延迟后见对比剂进入病变内部。2例均于全麻下行膀胱镜检查+后腹腔镜下肾盏憩室去顶、憩... 详细信息

儿童肾盏憩室临床少见,国内报道使用后腹腔镜手术治疗儿童肾盏憩室的病例较少本文报道2例肾盏憩室患儿,CT尿路造影显示囊性低密度包块,无明显强化,延迟后见对比剂进入病变内部。2例均于全麻下行膀胱镜检查+后腹腔镜下肾盏憩室去顶、憩室颈缝扎术。术后分别随访15、9个月,患儿均恢复良好,未见憩室复发。

关键词：儿童肾盏憩室后腹腔镜

钴掺杂叶片状沸石咪唑酯骨架结构材料实现磷酸盐快速去除

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中国环境科学 2024年第9期44卷 4929-4938页

作者：孙太焱彭海豪童婧向银萍徐峥勇杨朝晖熊炜平湖南大学环境科学与工程学院湖南长沙410082 湖南现代环境科技股份有限公司湖南长沙410004

为了减小水体富营养化的危害,提高吸附法除磷的效率,本文研究钴掺杂对于锌基叶片状沸石咪唑盐(Zn-ZIF-L)磷酸盐吸附能力的提升.本文采用间歇式吸附试验研究各个影响因素对于吸附的影响,采用XRD、XPS、FT-IR等研究材料的表面微观结构以... 详细信息

为了减小水体富营养化的危害,提高吸附法除磷的效率,本文研究钴掺杂对于锌基叶片状沸石咪唑盐(Zn-ZIF-L)磷酸盐吸附能力的提升.本文采用间歇式吸附试验研究各个影响因素对于吸附的影响,采用XRD、XPS、FT-IR等研究材料的表面微观结构以推测可能的吸附机理.发现当Zn和Co的初始摩尔比为9.5:0.5时,其吸附性能最好.掺杂后,在10min内吸附量增加55%,最大吸附量达到85.68mg/g,在不同温度、浓度、当pH值为4~8时、在不同阴离子以及腐殖酸环境下保持着较好的吸附性能.当初始浓度为10mg/L时,可吸附去除97%以上的磷,吸附剂在0.1mol/L的Cl^(-)或NO_(3)^(-)中仍能保持93%以上的吸附量.其中,P-OH与Zn-OH/Co-OH之间的化学键、静电相互作用和氢键相互作用在磷酸盐吸附中起主导作用.Co(0.5)-Zn-ZIF-L经过4次循环后仍能保持较高的吸附量.结果表明,Co(0.5)-Zn-ZIF-L能作为一种有效的吸附剂去除水体中的磷酸盐.

关键词：除磷钴掺杂叶片状沸石咪唑酯骨架结构材料

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纤维素拉曼光谱的单体仿真方法研究

光谱学与光谱分析 2024年第1期44卷 164-168页

作者：王新强储佩珠熊伟叶松甘永莹张文涛李树王方原桂林电子科技大学光电工程学院广西桂林541004 中国科学院安徽光学精密机械研究所安徽合肥230031 广西光电信息处理重点实验室广西桂林541004 中国科学院通用光学定标与表征技术重点实验室安徽合肥230031

纤维素是由葡萄糖组成的大分子多糖,是世界上最丰富、最便宜、最容易获得的天然聚合物。纤维素作为最古老最丰富的天然高分子在研究中备受关注,纤维素的可控性取决于其分子量、大小和结构,而拉曼光谱具有“指纹特性”,可以对不同的纤维... 详细信息

纤维素是由葡萄糖组成的大分子多糖,是世界上最丰富、最便宜、最容易获得的天然聚合物。纤维素作为最古老最丰富的天然高分子在研究中备受关注,纤维素的可控性取决于其分子量、大小和结构,而拉曼光谱具有“指纹特性”,可以对不同的纤维素纤维进行鉴别,也能对历史老化的纺织纤维材料进行鉴别。然而纤维素作为大分子多糖对其做理论仿真较为困难,该研究提出采用基本单元模拟大分子光谱这一方案,使用纤维素单体仿真拉曼光谱来分析纤维素大分子的光谱性质。使用Gaussian 16软件基于密度泛函理论,在B3LYP/6-31g(d, p)的基组条件下,计算了不同外电场(-0.01-0.03 a.u.)下的纤维素单体的拉曼光谱,以及纤维素双链节的拉曼光谱。研究表明,在无外电场作用下,纤维素单体的拉曼光谱主要在449、 597、 842、 1 127、 1 361、 1 395和3 005 cm^(-1)处有特征峰,对其做振动分析,结果表明这些拉曼峰分别是由环(C6—C4—O20)伸缩振动、 C—C—H扭曲振动、环(C4—O20—C2)伸缩振动、糖苷键(C2—O1—C8)的伸缩振动、 CH_(2)的弯曲振动、 CH_(2)的弯曲振动、 CH_(2)的伸缩振动产生。通过与实验值比较,纤维素单体仿真拉曼光谱与天然纤维素的实测拉曼光谱相吻合,故可通过对纤维素单体的第一性原理计算来反映纤维素大分子的拉曼光谱特性。当外电场由负方向变为正方向且逐渐增大时,597 cm^(-1)对应的环C—C—H扭曲振动的振幅无明显变化,以无电场为基准,施加外电场时,振动能量减小光谱红移;1 127 cm^(-1)对应的糖苷键(C2—O1—C8)的伸缩振动振幅明显减小,光谱呈蓝移;CH_(2)的弯曲振动在1 395 cm^(-1)处的特征峰光谱呈蓝移,在1 361 cm^(-1)处产生的光谱先蓝移再红移又再次蓝移,推测是弯曲振动区域更容易受到骨架振动和环境变化的影响。对比纤维素单体与双链节拉曼光谱的差异,除单体明显的特征峰外,双链节分子的在1 041和151 cm^(-1)处有明显的特征峰,其分别为仲醇C—O伸缩振动,C—O—H弯曲振动所产生,可对纤维素单体的拉曼光谱进行补充说明。这些结论为研究纤维素在外电场作用下的光谱提供理论依据,同时为其他大分子聚合物的拉曼光谱研究分析提供一种新的方法。

关键词：纤维素电场拉曼光谱

Research on the development methodology for clinical practice guidelines for organic integration of traditional Chinese medicine and Western medicine

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Military Medical Research 2024年第3期11卷 313-322页

作者： ying-Hui Jin Yan-Ping Wang ying-Lan Xie Gui-Hua Tian Xiao-Yu zhang Nan-Nan Shi Ke-Hu Yang Xin Sun Yao-Long Chen Da-Rong Wu Xin-Feng Guo Long Ge Chen Zhao cheng Lu yin Jiang Jing Guo Si-Yu Yan yong-Bo Wang Qiao Huang Xiang-ying Ren ying-Yue Rao Yun-Yun Wang Meng-Qian Yuan Xian-Tao Zeng Hong-Cai Shang Center for Evidence-Based and Translational Medicine Zhongnan Hospital of Wuhan UniversityWuhan 430071China Institute of Basic Research in Clinical Medicine China Academy of Chinese Medical SciencesBeijing 100700China China Center for Evidence Based Traditional Chinese Medicine Beijing 100029China Hubei Provincial Hospital of Traditional Chinese Medicine Wuhan 430074China Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing Dongzhimen HospitalBeijing University of Chinese MedicineBeijing 100700China Evidence-Based Medicine Center School of Basic Medical SciencesLanzhou UniversityLanzhou 730000China China Center for Evidence-Based Medicine West China Hospital of Sichuan UniversityChengdu 610041China State Key Laboratory of Dampness Syndrome of Chinese Medicine the Second Affliated Hospital of Guangzhou University of Chinese MedicineGuangzhou 510120China Evidence-based Medicine Team Guangdong Provincial Hospital of Traditional Chinese MedicineGuangzhou 510120China Nanjing University of Chinese Medicine Nanjing 210023China Jiangsu Province Hospital of Chinese Medicine Nanjing 210029China

Integrated traditional Chinese medicine(TCM)and Western medicine(WM)is a new medical science grounded in the knowledge bases of both TCM and WM,which then forms a unique modern medical system in *** TCM and WM has a long history in China,and has made important achievements in the process of clinical diagnosis and ***,the methodological defects in currently published clinical practice guidelines(CPGs)limit its *** organic integration of TCM and WM is a deeper integration of TCM and *** realize the progression of"integration"to"organic integration",a targeted and standardized guideline development methodology is ***,the purpose of this study is to establish a standardized development procedure for clinical practice guidelines for the organic integration of TCM and WM to promote the systematic integration of TCM and WM research results into clinical practice guidelines in order to achieve optimal results as the whole is greater than the sum of the parts.

关键词： Methodology Traditional Chinese medicine Western medicine Organic integration Clinical practice guidelines(CPGs)

Dynamical spontaneous scalarization in Einstein-Maxwell-scalar theory

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Chinese Physics C 2022年第9期46卷 268-275页

作者： wei xiong Peng Liu Chao Niu cheng-yong zhang Bin Wang Department of Physics and Siyuan Laboratory Jinan UniversityGuangzhou 510632China Center for Gravitation and Cosmology College of Physical Science and TechnologyYangzhou UniversityYangzhou 225009China School of Aeronautics and Astronautics Shanghai Jiao Tong UniversityShanghai 200240China

We study the linear instability and nonlinear dynamical evolution of the Reissner-Nordstrom(RN)black hole in the Einstein-Maxwell-scalar theory in asymptotic flat *** focus on the coupling function f(φ)=e^(-bφ^(2)),which facilitates both scalar-free RN and scalarized black hole *** first present the evolution of system parameters during dynamic *** parameter regions in which spontaneous scalarization occurs,we observe that the evolution of the scalar field at the horizon is dominated by the fundamental unstable mode from linear analysis at early *** late times,the nonlinear evolution can be considered to be the perturbation of scalarized black holes.

关键词： black hole quasinormal modes scalarization

Research on automatic high velocity arc spraying technique and metastable coating materials

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Advances in Manufacturing 2013年第1期1卷 97-101页

作者： Xiu-Bing liang yong-xiong Chen Zhi-Bin zhang Shi-cheng wei yong-Ming Guo Bin-Shi Xu National Engineering Research Center for Mechanical Product Remanufacturing The Academy of Armored Forces Engineering National Key Laboratory for Remanufacturing The Academy of Armored Forces Engineering College of Materials Science and Engineering Beijing University of Technology

Into the 21st century, remanufacturing engineering has been accepted by more and more people in China. Remanufacturing is an industrial maintenance technology for worn or waste electro-mechanical products using advanced technology, which means the high-level stage for the maintenance and surface engineering. In this paper, a new automotive high velocity arc spraying system was introduced. And three kinds of advanced amorphous and nanocrystalline metastable coatings were developed, including Fe, Ni and Al-based amorphous and nanocrystalline composite coatings. Their research development and applications were introduced. And the development trends of high velocity arc spraying system and advanced metastable surface protective coating materials on the remanu- facturing engineering were indicated.

关键词： Remanufacturing. Arc spraying. AmorphousNanocrystalline Coating

Series-parallel Hybrid Vehicle Control Strategy Design and Optimization Using Real-valued Genetic Algorithm

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Chinese Journal of Mechanical Engineering 2009年第6期22卷 862-868页

作者： xiong weiwei yin chengliang zhang yong zhang Jianlong Institute of Automotive Engineering Shanghai Jiao Tong University Shanghai 200240 China

Despite the series-parallel hybrid electric vehicle inherits the performance advantages from both series and parallel hybrid electric vehicle, few researches about the series-parallel hybrid electric vehicle have been revealed because of its complex co nstruction and control strategy. In this paper, a series-parallel hybrid electric bus as well as its control strategy is revealed, and a control parameter optimization approach using the real-valued genetic algorithm is proposed. The optimization objective is to minimize the fuel consumption while sustain the battery state of charge, a tangent penalty function of state of charge（SOC） is embodied in the objective function to recast this multi-objective nonlinear optimization problem as a single linear optimization problem. For this strategy, the vehicle operating mode is switched based on the vehicle speed, and an ＂optimal line＂ typed strategy is designed for the parallel control. The optimization parameters include the speed threshold for mode switching, the highest state of charge allowed, the lowest state of charge allowed and the scale factor of the engine optimal torque to the engine maximum torque at a rotational speed. They are optimized through numerical experiments based on real-value genes, arithmetic crossover and mutation operators. The hybrid bus has been evaluated at the Chinese Transit Bus City Driving Cycle via road test, in which a control area network-based monitor system was used to trace the driving schedule. The test result shows that this approach is feasible for the control parameter optimization. This approach can be applied to not only the novel construction presented in this paper, but also other types of hybrid electric vehicles.

关键词： series-parallel hybrid electric vehicle control strategy design optimization real-valued genetic algorithm

Intranasal adenovirus-vectored Omicron vaccine induced nasal immunoglobulin A has superior neutralizing potency than serum antibodies

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Signal Transduction and Targeted Therapy 2024年第8期9卷 3507-3518页

作者： Si Chen Zhengyuan zhang Qian Wang Qi Yang Li yin Lishan Ning Zhilong Chen Jielin Tang weiqi Deng Ping He Hengchun Li Linjing Shi yjun Deng Zijian Liu Hemeng Bu Yaohui Zhu Wenming Liu Linbing Qu Ligiang Feng Xiaoli xiong Baoqing Sun Nanshan Zhong Feng Li ingchao Li Xinwen Chen Ling Chen Guangzhou Institute of Infectious Disease Guangzhou Eighth People's HospitalGuangzhou Medical UniversityGuangzhouChina Guangzhou National Laboratory GuangzhouChina State Key Laboratory of Respiratory Disease Center for Cell Lineage ResearchGuangzhou Institutes of Biomedicine and HealthChinese Academy of SciencesGuangzhouChina University of Chinese Academy of Sciences BeijingChina State Key Laboratory of Respiratory Disease National Clinical Research Center for Respiratory DiseaseGuangzhou Institute of Respiratory Healththe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina Xiamen United Institute of Respiratory Health XiamenChina

The upper respiratory tract is the initial site of SARS-CoV-2 *** spike-specific secretory immunoglobulin A(slgA)correlates with protection against Omicron breakthrough *** report that intranasal vaccination using human adenovirus serotype 5(Ad5)vectored Omicron spike in people who previously vaccinated with ancestral vaccine could induce robust neutralizing slgA in the nasal *** slgA was predominantly present in dimeric and multimeric forms and accounted for nearly 40%of total proteins in nasal mucosal lining fluids(NMLFs).A low-level IgG could also be detected in NMLFs but not IgM,IgD,and *** a complete nasal wash,slgA in the nasal passage could be replenished rapidly within a few hours.A comparison of purified paired serum IgA,serum IgG,and nasal slgA from the same individuals showed that slgA was up to 3-logs more potent than serum antibodies in binding to spikes and in neutralizing Omicron *** IgG and IgA failed to neutralize XBB and BA.2.86,while nasal slgA retained potent neutralization against these newly emerged *** analysis showed that slgA Was more effective than IgG or IgA in blocking spike-mediated cell-to-cell transmission and protecting hACE2 mice from XBB *** a slgA monoclonal antibody as a reference,we estimated that the total nasal slgA contains about 2.6-3.9%spikespecific slgA in NMLFs collected approximately one month after intranasal *** study provided insights for developing intranasal vaccines that can induce slgA to build an effective and mutation-resistant first-line immune barrier against constantly emerging variants.

关键词： nasal antibodies neutral