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Seasonal malaria chemoprevention in Africa and China's upgraded role as a contributor:a scoping review

Infectious Diseases of Poverty 2023年第4期12卷 99-99页

作者： Ming Xu Yun-Xuan Hu shen-ning lu Muhammad Abdullahi Idris Shu-Duo Zhou Jian Yang Xiang-ning Feng Yang-Mu Huang Xian Xu Ying Chen Duo-Quan Wang Department of Global Health School of Public Health Peking University Haidian District Beijing China Institute for Global Health and Development Peking University Beijing China National Institute of Parasitic Diseases Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research) NHC Key Laboratory of Parasite and Vector Biology WHO Collaborating Centre for Tropical Diseases National Center for International Research On Tropical Diseases Shanghai China Physiotherapy Department Federal Medical Center Gusau Nigeria Anhui Provincial Center for Disease Control and Prevention Hefei China School of Global Health Chinese Center for Tropical Diseases Research Shanghai Jiao Tong University School of Medicine Shanghai China

Background Children under five are the vulnerable population most at risk of being infected with Plasmodium para-sites,especially in the Sahel region.Seasonal malaria chemoprevention(SMC)recommended by World Health Organi-zation(WHO),has proven to be a highly effective intervention to prevent malaria.Given more deaths reported during the COVID-19 pandemic than in previous years due to the disruptions to essential medical services,it is,therefore,necessary to seek a more coordinated and integrated approach to increasing the pace,coverage and resilience of SMC.Towards this end,fully leverage the resources of major players in the global fight against malaria,such as China could accelerate the SMC process in Africa.Methods We searched PubMed,MEDLINE,Web of Science,and Embase for research articles and the Institutional Repository for Information Sharing of WHO for reports on SMC.We used gap analysis to investigate the challenges and gaps of SMC since COVID-19.Through the above methods to explore China's prospective contribution to SMC.Results A total of 68 research articles and reports were found.Through gap analysis,we found that despite the delays in the SMC campaign,11.8 milion children received SMC in 2020.However,there remained some challenges:(1)a shortage of fully covered monthly courses;(2)lack of adherence to the second and third doses of amodiaquine;(3)four courses of SMC are not sufficient to cover the entire malaria transmission season in areas where the peak transmission lasts longer;(4)additional interventions are needed to consolidate SMC efforts.China was certified malaria-free by WHO in 2021,and its experience and expertise in malaria elimination can be shared with high-burden countries.With the potential to join the multilateral cooperation in SMC,including the supply of quality-assured health commodities,know-how transfer and experience sharing,China is expected to contribute to the ongoing Scale-up of SMC.Conclusions A combination of necessary preventive and curative activities may prove beneficial

关键词： Seasonal malaria chemoprevention Malaria Prevention China's contribution Multilateral partnership

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Impact of 1,7-malaria reactive community-based testing and response(1,7-mRCTR)approach on malaria prevalence inTanzania

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Infectious Diseases of Poverty 2023年第6期12卷 103-104页

作者： Wei Chang Jessica Cohen Duo‑Quan Wang Salim Abdulla Muhidin Kassim Mahende Tegemeo Gavana Valerie Scott Hajirani M.Msuya Mary Mwanyika‑Sando Ritha John ANjau shen‑ning lu Silas Temu Honorati Masanja Wilbald Anthony Maru Aregawi W Naveen Sunder Tang Kun Katia Bruxvoort Jovin Kitau Fadhila Kihwele Godlove Chila Mihayo Michael Marcia Castro Nicolas AMenzies Sein Kim Xiao ning Xiao‑Nong Zhou Prosper Chaki Yeromin P.Mlacha Department of Global Health and Population Harvard T.H. Chan School of Public Health Boston USA Chinese Center for Disease Control and Prevention National Institute of Parasitic Diseases Shanghai People’s Republic of China School of Global Health Chinese Center for Tropical Diseases Research Shanghai Jiao Tong University School of Medicine Shanghai People’s Republic of China Chinese Center for Tropical Diseases Research Shanghai People’s Republic of China WHO Collaborating Centre for Tropical Diseases Shanghai People’s Republic of China Ifakara Health Institute Dar es Salaam United Republic of Tanzania Africa Academy for Public Health Dar es Salaam Tanzania Muhimbili University of Health and Allied Sciences Dar es Salaam Tanzania National Center for International Research on Tropical Diseases Ministry of Science and Technology Shanghai People’s Republic of China Global Malaria Programme World Health Organization Geneva Switzerland Bentley University Waltham USA Vanke School of Public Health Tsinghua University Beijing People’s Republic of China School of Public Health University of Alabama at Birmingham Birmingham USA The Pan-African Mosquito Control Association (PAMCA) KEMRI Headquarters Nairobi Kenya

Background Progress in malaria control has stalled in recent years and innovative surveillance and response approaches are needed to accelerate malaria control and elimination eforts in endemic areas of Africa.Build‑ing on a previous China-UK-Tanzania pilot study on malaria control,this study aimed to assess the impact of the 1,7-malaria Reactive Community-Based Testing and Response(1,7-mRCTR)approach implemented over two years in three districts of Tanzania.Methods The 1,7-mRCTR approach provides community-based malaria testing via rapid diagnostic tests and treat‑ment in villages with the highest burden of malaria incidence based on surveillance data from health facilities.We used a diference-in-diferences quasi-experimental design with linear probability models and two waves of crosssectional household surveys to assess the impact of 1,7-mRCTR on malaria prevalence.We conducted sensitivity analyses to assess the robustness of our results,examined how intervention efects varied in subgroups,and explored alternative explanations for the observed results.Results Between October 2019 and September 2021,244,771 community-based malaria rapid tests were com‑pleted in intervention areas,and each intervention village received an average of 3.85 rounds of 1-7mRCTR.Malaria prevalence declined from 27.4%at baseline to 11.7%at endline in the intervention areas and from 26.0%to 16.0%in the control areas.1,7-mRCTR was associated with a 4.5-percentage-point decrease in malaria prevalence(95%confdence interval:−0.067,−0.023),equivalent to a 17%reduction from the baseline.In Rufji,a district characterized by lower prevalence and where larviciding was additionally provided,1,7-mRCTR was associated with a 63.9%decline in malaria prevalence.Conclusions The 1,7-mRCTR approach reduced malaria prevalence.Despite implementation interruptions due to the COVID-19 pandemic and supply chain challenges,the study provided novel evidence on the efectiveness of community-based reactive approaches in moderate-to high-endemicity areas and demon

关键词： Malaria Surveillance and response Incidence rate Community-health worker Health facility Communitybased testing and treatment 1,7-mRCTR Tanzania

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Theoretical insights of the pharmaceutical compound fluoxetine in water:Role in direct photolysis and indirect photolysis by free radicals

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Journal of Environmental Sciences 2024年第8期142卷 269-278页

作者： Ying lu Se Wang Yifan shen School of Environmental Science and Engineering Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologyJiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution ControlNanjing University of Information Science and TechnologyNanjing 210044China

The frequent detection of pharmaceutical compounds in the environment has led to a growing awareness,which may pose a major threat to the aquatic environment.In this study,photodegradation(direct and indirect photolysis)of two different dissociation states of fluoxetine(Flu)was investigated in water,mainly including the determination of photolytic transition states and products,and the mechanisms of indirect photodegradation with·OH,CO_(3)^(*-)and NO_(3)^(*).The main direct photolysis pathways are defluorination and C–C bond cleavage.In addition,the indirect photodegradation of Flu in water is mainly through the reactions with·OH and NO_(3)^(*),and the photodegradation reaction with CO_(3)^(*-)is relatively difficult to occur in the water environment.Our results provide a theoretical basis for understanding the phototransformation process of Flu in the water environment and assessing its potential risk.

关键词： Fluoxetine Photochemical mechanism Direct photolysis Free radical reaction DFT

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A toroidal SAW gyroscope with focused IDTs for sensitivity enhancement

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Microsystems & Nanoengineering 2024年第2期10卷 47-56页

作者： lu Tian Haitao Zhao Qiang shen Honglong Chang Ministry of Education Key Laboratory of Micro and Nano Systems for Aerospace School of Mechanical EngineeringNorthwestern Polytechnical UniversityXi’an710072China

A surface acoustic wave(SAW)gyroscope measures the rate of rotational angular velocity by exploiting a phenomenon known as the SAW gyroscope effect.Such a gyroscope is a great candidate for application in harsh environments because of the simplification of the suspension vibration mechanism necessary for traditional microelectromechanical system(MEMS)gyroscopes.Here,for the first time,we propose a novel toroidal standing-wave-mode SAW gyroscope using focused interdigitated transducers(FIDTs).Unlike traditional SAW gyroscopes that use linear IDTs to generate surface acoustic waves,which cause beam deflection and result in energy dissipation,this study uses FIDTs to concentrate the SAW energy based on structural features,resulting in better focusing performance and increased SAW amplitude.The experimental results reveal that the sensitivity of the structure is 1.51µV/(°/s),and the bias instability is 0.77°/s,which are improved by an order of magnitude compared to those of a traditional SAW gyroscope.Thus,the FIDT component can enhance the performance of the SAW gyroscope,demonstrating its superiority for angular velocity measurements.This work provides new insights into improving the sensitivity and performance of SAW gyroscopes.

关键词： angular deflection gyroscope

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Fullerenes and derivatives as electrocatalysts: Promises and challenges

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Green Energy & Environment 2024年第1期9卷 7-27页

作者： Kun Guo ning Li Lipiao Bao Xing lu State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan430074China

Carbon-based metal-free nanomaterials are promising alternatives to precious metals as electrocatalysts of key energy storage and conversion technologies.Of paramount signiﬁcance are the establishment of design principles by understanding the catalytic mechanisms and identifying the active sites.Distinct from sp2-conjugated graphene and carbon nanotube,fullerene possesses unique characteristics that are growingly being discovered and exploited by the electrocatalysis community.For instance,the well-deﬁned atomic and molecular structures,the good electron afﬁnity to tune the electronic structures of other substances,the intermolecular self-assembly into superlattices,and the on-demand chemical modiﬁcation have endowed fullerene with incomparable advantages as electrocatalysts that are otherwise not applicable to other carbon ma-terials.As increasing studies are being reported on this intriguing topic,it is necessary to provide a state-of-the-art overview of the recent progress.This review takes such an initiative by summarizing the promises and challenges in the electrocatalytic applications of fullerene and its derivatives.The content is structured according to the composition and structure of fullerene,including intact fullerene(e.g.,fullerene composite and superlattices)and fullerene derivatives(e.g.,doped,endohedral,and disintegrated fullerene).The synthesis,characterization,catalytic mechanisms,and deﬁciencies of these fullerene-based materials are explicitly elaborated.We conclude it by sharing our perspectives on the key aspects that future efforts shall consider.

关键词： Fullerene Fullerene derivative Metal-free catalyst Structural defect Electrocatalyst

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A Reliable Iteration Algorithm for One-Bit Compressive Sensing on the Unit Sphere

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Acta Mathematicae Applicatae Sinica 2024年第3期40卷 801-822页

作者： Yan-cheng lu ning BI An-hua WAN School of Mathematics Sun Yat-sen UniversityGuangzhou 510275China

The one-bit compressed sensing problem is of fundamental importance in many areas,such as wireless communication,statistics,and so on.However,the optimization of one-bit problem coustrained on the unit sphere lacks an algorithm with rigorous mathematical proof of convergence and validity.In this paper,an iteration algorithm is established based on difference-of-convex algorithm for the one-bit compressed sensing problem constrained on the unit sphere,with iterating formula■,where C is the convex cone generated by the one-bit measurements andη_(1)>η_(2)>1/2.The new algorithm is proved to converge as long as the initial point is on the unit sphere and accords with the measurements,and the convergence to the global minimum point of the l_(1)norm is discussed.

关键词： one-bit compressed sensing difference of convex algorithm iteration algorithm ■1-minimization

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CToMP: a cycle-task-oriented memory protection scheme for unmanned systems

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Science China(Information Sciences) 2024年第6期67卷 399-417页

作者： Chengyan MA ning XI Di lu Yebo FENG Jianfeng MA School of Cyber Engineering Xidian University School of Computer Science and Technology Xidian University Department of Computer and Information Science University of Oregon

Memory corruption attacks(MCAs) refer to malicious behaviors of system intruders that modify the contents of a memory location to disrupt the normal operation of computing systems, causing leakage of sensitive data or perturbations to ongoing processes. Unlike general-purpose systems, unmanned systems cannot deploy complete security protection schemes, due to their limitations in size, cost and performance.MCAs in unmanned systems are particularly difficult to defend against. Furthermore, MCAs have diverse and unpredictable attack interfaces in unmanned systems, severely impacting digital and physical sectors. In this paper, we first generalize, model and taxonomize MCAs found in unmanned systems currently, laying the foundation for designing a portable and general defense approach. According to different attack mechanisms,we found that MCAs are mainly categorized into two types — return2libc and return2shellcode. To tackle return2libc attacks, we model the erratic operation of unmanned systems with cycles and then propose a cycle-task-oriented memory protection(CToMP) approach to protect control flows from tampering. To defend against return2shellcode attacks, we introduce a secure process stack with a randomized memory address by leveraging the memory pool to prevent Shellcode from being executed. Moreover, we discuss the mechanism by which CTo MP resists the return-oriented programming(ROP) attack, a novel variant of return2libc attacks. Finally, we implement CTo MP on CUAV V5+ with Ardupilot and Crazyflie. The evaluation and security analysis results demonstrate that the proposed approach CTo MP is resilient to various MCAs in unmanned systems with low footprints and system overhead.

关键词： unmanned system memory corruption attack memory protection system security randomized memory address

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Enhancement of heavy metals desorption from the soil by eddy deep leaching in hydrocyclone

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Journal of Environmental Sciences 2024年第1期135卷 242-251页

作者： ning Wang Hao lu Bo Liu Tai Xiong Jianping Li Hualin Wang Qiang Yang School of Mechanical and Power Engineering East China University of Science and TechnologyShanghai 200237China National Engineering Laboratory for High Concentration Refractory Organic Wastewater Treatment Technology East China University of Science and TechnologyShanghai 200237China

An eddy deep leaching technology was developed in this paper to address the challenge of treating heavy metal contaminants in industrial mining areas.The desorption effect of As,Cd,Sb and Pb was investigated utilizing chemical leaching and physical eddy techniques.It was found that the heavy metals concentration increased with decreasing particle size.The highest proportion of Cd in the form distribution of soil was in the bound to iron and manganese oxides,while the maximum proportion of As,Sb and Pb were in the residual.The optimal solid-liquid ratio of the hydrocyclone was 1:20,and the corresponding separation efficiency and flow rate were 84.7%and 1.76 m^(3)/hr,respectively.The grade efficiency of soil particle separation increases with particle size and exceeds 99%for particles above 1,000μm.Leaching experiments have revealed that oxalic acid(OA)and a combination of oxalic acid and EDTA(OAPE)were more efficient than citric acid(CA)and a combination of citric acid and EDTA(CAPE)for the desorption of heavy metals,respectively.The comparison of OAPE and eddy leaching found that the latter improved the desorption efficiency by 9.4%,7.5%,7.2%and 7.8%for As,Cd,Sb and Pb compared to the former,respectively.The results demonstrated that the eddy leaching technique could further enhance the desorption efficiency of heavy metals.It is expected to provide technical support for soil remediation with reduced usage of leaching agents.

关键词： Heavy metals Soil remediation Oxalic acid Eddy leaching Hydrocyclone

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Acute effect of foot strike patterns on in vivo tibiotalar and subtalar joint kinematics during barefoot running

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Journal of Sport and Health Science 2024年第1期13卷 108-117页

作者： Dongqiang Ye lu Li shen Zhang Songlin Xiao Xiaole Sun Shaobai Wang Weijie Fu Key Laboratory of Exercise and Health Sciences of Ministry of Education Shanghai University of SportShanghai 200438China Shanghai Frontiers Science Research Base of Exercise and Metabolic Health Shanghai University of SportShanghai 200438China

Background:Foot kinematics,such as excessive eversion and malalignment of the hindfoot,are believed to be associated with running-related injuries.The maj ority of studies to date show that different foot strike patterns influence these specific foot and ankle kinematics.However,technical deficiencies in traditional motion capture approaches limit knowledge of in vivo joint kinematics with respect to rearfoot and forefoot strike patterns(RFS and FFS,respectively).This study uses a high-speed dual fluoroscopic imaging system(DFIS)to determine the effects of different foot strike patterns on 3D in vivo tibiotalar and subtalar joints kinematics.Methods:Fifteen healthy male recreational runners underwent foot computed tomography scanning for the construction of 3-dimensional models.A high-speed DFIS(100 Hz)was used to collect 6 degrees of freedom kinematics for participants’tibiotalar and subtalar joints when they adopted RFS and FFS in barefoot condition.Results:Compared with RFS,FFS exhibited greater internal rotation at 0%-20%of the stance phase in the tibiotalar joint.The peak internal rotation angle of the tibiotalar joint under FFS was greater than under RFS(plusion:Running with acute barefoot FFS increases the internal rotation of the tibiotalar joint in the early stance.The use of high-speed DFIS to quantify the movement of the tibiotalar and subtalar joint was critical to revealing the effects of RF S and FFS during running.

关键词： Foot strike patterns High-speed dual fluoroscopic imaging system In vivo kinematics Running

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Interfacial reinforcement of core-shell HMX@energetic polymer composites featuring enhanced thermal and safety performance

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Defence Technology（防务技术） 2024年第1期31卷 387-399页

作者： Binghui Duan Hongchang Mo Bojun Tan Xianming lu Bozhou Wang ning Liu Xi'an Modern Chemistry Research Institute Xi'an710065People's Republic of China State Key Laboratory of Fluorine&Nitrogen Chemicals Xi'an710065People's Republic of China

The weak interface interaction and solid-solid phase transition have long been a conundrum for 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane(HMX)-based polymer-bonded explosives(PBX).A two-step strategy that involves the pretreatment of HMX to endow—OH groups on the surface via polyalcohol bonding agent modification and in situ coating with nitrate ester-containing polymer,was proposed to address the problem.Two types of energetic polyether—glycidyl azide polymer(GAP)and nitrate modified GAP(GNP)were grafted onto HMX crystal based on isocyanate addition reaction bridged through neutral polymeric bonding agent(NPBA)layer.The morphology and structure of the HMX-based composites were characterized in detail and the core-shell structure was validated.The grafted polymers obviously enhanced the adhesion force between HMX crystals and fluoropolymer(F2314)binder.Due to the interfacial reinforcement among the components,the two HMX-based composites exhibited a remarkable increment of phase transition peak temperature by 10.2°C and 19.6°C with no more than 1.5%shell content,respectively.Furthermore,the impact and friction sensitivity of the composites decreased significantly as a result of the barrier produced by the grafted polymers.These findings will enhance the future prospects for the interface design of energetic composites aiming to solve the weak interface and safety concerns.

关键词： HMX crystals Polyalcohol bonding agent Energetic polymer Core-shell structure Interfacial reinforcement

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