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Memory effect evaluation based on transmission matrix calculation

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Chinese Physics B 2019年第7期28卷 259-268页

作者： Ming Li Long-Jie Fang lin pang College of Physics Sichuan University

The memory effect is a type of auto correlation observed in linear systems, which is widely used to control scattered light through thin scattering *** show that there exists a strong correlation among the optimized phase distributions of adjacent focal points in focusing through scattering *** numeric simulation and experiment indicate that within the memory effect, the phase difference between the two adjacent focal points shows an optical phase fringe pattern, and the closer the adjacent focal points are, the wider the fringe pattern will be, corresponding to the tilting of a plane wave phase added onto the acquired optical phase distribution at the focal *** effect can be utilized for achieving optimal phase distributions of focal point scanning without optical phase evaluation via the experiment, which has great potential application in imaging through the scattering medium.

关键词： scattering media phase modulation optical memory effect focal point

On the localised corrosion of carbon steel induced by the in-situ local damage of porous corrosion products

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Journal of Materials Science & Technology 2020年第19期54卷 95-104页

作者： lin pang Zhengbin Wang Yugui Zheng Xueming Lai Xu Han CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang110016China School of Materials Science and Engineering University of Science and Technology of ChinaHefei230026China Dagang Oilfield Oil Production Technology Research Institute of China National Petroleum Corporation Tianjin300280China Third Oil Production Plant of Dagang Oilfield Company Cangzhou061723China

The effect of in-situ local damage of uniform porous corrosion products on the localised corrosion of carbon steel is investigated using the wire beam electrode technique(WBE)combined with morphology characterisation and electrochemical *** WBE measurements demonstrate that the localised corrosion is enhanced by the in-situ local removal of porous corrosion products,supported by the morphology characterisation and electrochemical *** enhanced localised corrosion does not originate from the damaged wire in WBE where the corrosion products are removed but from the other undamaged wires,which is reported for the first time.A mechanism is proposed that the intensive anodic polarisation effect of the damaged wire on the undamaged wires could account for the enhanced localised corrosion,which is due to the protective corrosion products newly formed on the damaged surface and the increase in the potential of damaged wire.

关键词： Carbon steel Localised corrosion Wire beam electrode Corrosion products

Orchestrating Network Functions in Software-Defined Networks

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China Communications 2017年第2期14卷 104-117页

作者： Hongchao Hu lin pang Zhenpeng Wang Guozhen Cheng National Digital Switching System Engineering & Technological R&D Center Zhengzhou 450002 China

*** networking(SDN) enables *** companies to participate in the network function innovations. A number of instances for one network function will inevitably *** in the network. Although some orchestration architecture has been proposed to chain network functions, rare works are focused on how to optimize this process. In this paper, we propose an optimized model for network function orchestration, function combination model(FCM). Our main contributions are as following. First, network functions are featured with a new abstraction, and are open to external providers. And FCM identifies network functions using unique type, and organizes their instances distributed over the network with the appropriate way. Second, with the specialized demands, we can combine function instances under the global network views, and formulate it into the problem of Boolean linear program(BLP). A simulated annealing algorithm is designed to approach optimal solution for this BLP. Finally, the numerical experiment demonstrates that our model can create outstanding composite schemas efficiently.

关键词： software-defined network network function function orchestrating

Understanding neutralising antibodies against SARS-CoV-2 and theirimplications in clinical practice

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Military Medical Research 2022年第2期9卷 215-230页

作者： Natalie Yan-lin pang Alexander Shao-Rong pang Vincent T.Chow De-Yun Wang Yong Loo lin School of Medicine National University of SingaporeSingapore 119228Singapore Department of Microbiology and Immunology National University of SingaporeScience Drive 2Singapore 117545Singapore Infectious Diseases Translational Research Program Yong Loo Lin School of MedicineNational University of SingaporeSingapore 119228Singapore Department of Otolaryngology Yong Loo Lin School of MedicineNational University of Singapore1E Kent Ridge RoadSingapore 119228Singapore

Severe acute respiratory syndrome coronavirus (SARS-CoV-2) is a newly identified member of the coronavirus family that has caused the coronavirus disease 2019 (COVID-19) pandemic. This rapidly evolving and unrelenting SARS-CoV-2has disrupted the lives and livelihoods of millions worldwide. As of 23 August 2021, a total of 211,373,303 COVID-19cases have been confirmed globally with a death toll of 4,424,341. A strong understanding of the infection pathway of SARS-CoV-2, and how our immune system responds to the virus is highly pertinent for guiding the development and improvement of effective treatments. In this review, we discuss the current understanding of neutralising antibodies(NAbs) and their implications in clinical practice. The aspects include the pathophysiology of the immune response,particularly humoral adaptive immunity and the roles of NAbs from B cells in infection clearance. We summarise the onset and persistence of IgA, IgM and IgG antibodies, and we explore their roles in neutralising SARS-CoV-2, their persistence in convalescent individuals, and in reinfection. Furthermore, we also review the applications of neutralising antibodies in the clinical setting—from predictors of disease severity to serological testing to vaccinations, and finally in therapeutics such as convalescent plasma infusion.

关键词： Severe acute respiratory syndrome coronavirus Coronavirus disease 2019 Neutralising antibodies Persistence Spike glycoprotein Receptor-binding domain B cells T cells Convalescent plasma

Interpretation of the National Action Plan for Eliminating Hepatitis C as a Public Health Threat(2021–2030)

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China CDC weekly 2022年第29期4卷 627-630页

作者： Jian Li lin pang Zhongfu Liu National Center for AIDS/STD Control and Prevention Chinese Center for Disease Control and PreventionBeijingChina

Summary Hepatitis C virus(HCV)infection is a major public health problem in *** 2016,the World Health Organization(WHO)proposed a goal to eliminate viral hepatitis as a public health threat by 2030,and in 2018,the National Health Commission of China launched Hepatitis C Elimination Action by *** C control and prevention has made significant progress in China in recent *** implement the“Healthy China 2030”plan and the Healthy China Initiative(2019–2030),and to contribute to the global target of eliminating viral hepatitis as a public health threat by 2030,the National Health Commission of China and eight other government departments jointly issued the National Action Plan for Eliminating Hepatitis C as a Public Health Threat(2021–2030)(hereinafter referred to as the“National Plan”)in *** National Plan has an overarching goal and 15 specific targets that cover health education,comprehensive prevention interventions,testing and treatment,and capacity *** National Plan introduces key tasks and strategies of“five strengthenings,one expanding,and one implementation,”i.e.,strengthening health education,comprehensive prevention,referral and treatment,drug supply,and information management;expanding testing;and implementing relevant medical insurance *** National Plan also proposes key guaranteeing measures of“four intensifications and one mobilization,”i.e.,intensification of organizational leadership,capacity building,scientific research and international cooperation,and supervision and fulfillment;mobilization of social *** National Plan is an important component of the Healthy China initiative,adhering to the integration of treatment and prevention and deepening the“integration of medical treatment,medical insurance,and medicine supplies.”In this review,we describe the National Plan and discuss its challenges and prospects.

关键词： jointly prevention Action

Two New Types of Conserved Quantities Deduced from Noether Symmetry for Nonholonomic Mechanical System

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Communications in Theoretical Physics 2009年第2期51卷 205-208页

作者： ZHANG Xiao-Ni FANG Jian-Hui pang Ting lin Peng College of Physics Science and Technology China University of Petroleum Dongying 257061 China

For a nonholonomic mechanical system, the generalized Mei conserved quantity and the new generalized Hojman conserved quantity deduced from Noether symmetry of the system are studied. The criterion equation of the Noether symmetry for the system is got. The conditions under which the Noether symmetry can lead to the two new conserved quantities are presented and the forms of the conserved quantities are obtained. Finally, an example is given to illustrate the application of the results.

关键词： Noether symmetry conserved quantity nonholonomic mechanical system

Effects of UV-B treatment on controlling lignification and quality of bamboo (Phyllostachys prominens) shoots without sheaths during cold storage

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Journal of Integrative Agriculture 2020年第5期19卷 1387-1395页

作者： ZHENG Jian LI Sheng-e Maratab ALI HUANG Qi-hui ZHNEG Xiao-lin pang lin-jiang College of Food Science and Biotechnology Zhejiang Gongshang UniversityHangzhou 310018P.R.China School of Agriculture and Food Science Zhejiang A&F UniversityHangzhou 311300P.R.China

For evaluating the effects of UV-B treatment on lignification and quality of bamboo(Phyllostachys prominens) shoots during postharvest, fresh bamboo shoots without sheaths were irradiated with UV-B at a dose of 8.0 kJ m^(–2) and then stored at(6±1)℃ along with 85–90% relative humidity(RH) for 15 d. The results showed that UV-B treatment apparently slowed down the increase rates of flesh firmness, weight loss, and contents of cellulose and lignin. It also decreased the activities of 4-coumarate CoA ligase(4CL), peroxidase(POD), cinnamyl alcohol dehydrogenase(CAD) and phenylalanine ammonialyase(PAL) and the expression of their encoding genes during cold storage. It was suggested that these effects of UV-B treatment on decreases in these enzymatic activities and the expression of encoding genes might collectively regulate lignin synthesis and accumulation in the flesh of bamboo shoots and consequently benefit in maintaining the edible quality of bamboo shoots during cold storage.

关键词： bamboo shoot lignification quality UV-B treatment cold storage

N,N,O-Tridentate One-dimensional Methyl-bridged Heterobimetallic Complex: Synthesis, Crystal Structure and Catalytic Activity

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Chinese Journal of Structural Chemistry 2020年第7期39卷 1343-1349页

作者： HUA Yu-Peng pang Jing-lin GAO Yan-Peng WEI Xue-Hong Ordos Institute of Technology Ordos 017000Inner MongoliaChina Scientific Instrument Center Shanxi UniversityTaiyuan 030006China

The sequential reaction of the N,N,O-tridentate ligand HOC(CH2)5CH2N(Me)CH2CH2NMe2(LH)in diethyl ether with AlEtCl2 and MeLi afforded a lithium-aluminum complex containing a polymeric structure of one-dimensional chain[{-LiOC(CH2)5CH2N(Me)CH2CH2NMe2}AlMe2CH3-}n](1),which was characterized by 1H,13C NMR spectra,elemental analyses and single-crystal X-ray diffraction *** 1 crystallizes in triclinic,space group P1 with a=10.526(3),b=10.949(3),c=17.799(4)?,β=76.211(11)°,V=1915.3(8)?3,Dc=1.014 g·cm–3,F(000)=648 andμ=0.104 mm–*** addition,the heterobimetallic complex 1 was used to catalyze the Meerwein-Ponndorf-Verley(MPV)reaction and exhibited excellent catalytic activities in good yield(up to 97%).

关键词： heterobimetallic complex synthesis characterization catalytic reaction

Analysis on damage characteristics and detonation performance of solid rocket engine charge subjected to jet

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Defence Technology（防务技术） 2022年第9期18卷 1552-1562页

作者： Song-lin pang Xiong Chen Jin-sheng Xu Ge-tu Zhaori Hong-Ying Du School of Mechanical Engineering Nanjing University of Science and TechnologyNanjing210094China The 41st Institute The Sixth AcademyChina Aerospace Science and Industry CorporationHohhot010010China Technology Center Jinxi Industries Group Company LimitedTaiyuan030027China

To further explore the damage characteristics and impact response of the shaped charge to the solid rocket engine(SRE) in storage or transportation, protective armor was designed and the shelled charges model(SCM)/SRE with protective armor impacting by shaped charge tests were conducted. Air overpressures at 5 locations and axial acceleration caused by the explosion were measured, and the experimental results were compared with two air overpressure curves of propellant detonation obtained by related scholars. Afterwards, the finite element software AUTODYN was used to simulate the SCM impacted process and SRE detonation results. The penetration process and the formation cause of damage were analyzed. The detonation performance of TNT, reference propellant, and the propellant used in this experiment was compared. The axial acceleration caused by the explosion was also *** comprehensive comparison, the energy released by the detonation of this propellant is larger, and the HMX or Al particles contained in this propellant are more than the reference propellant, with a TNT equivalent of 1.168-1.196. Finally, advanced protection armor suggestions were proposed based on the theory of woven fabric rubber composite armor(WFRCA).

关键词： Explosion mechanics Shaped charge jet Damage characteristics Detonation performance of propellant