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A Registry-Based Observational Study on the Maternal and Fetal Outcomes of COVID-19 Patients in Hong Kong,China

Maternal-Fetal Medicine 2024年第3期6卷 156-163页

作者： Hillary HY Leung Teresa WL Ma florrie ny yu Meliza CW Kong Tsz Kin Lo Pauline PL So Wing-Cheong Leung Wendy Shu Ka Wang Cheung Sakita Moungmaithong Chi Chiu Wang Liona C.Poon Department of Obstetrics and Gynaecology The Chinese University of HongKongHong Kong 999077China Department of Obstetrics and Gynaecology Queen Elizabeth HospitalHong Kong 999077China Department of Obstetrics and Gynaecology United Christian HospitalHong Kong 999077China Department of Obstetrics and Gynaecology Princess Margaret HospitalHong Kong 999077China Department of Obstetrics and Gynaecology Tuen Mun HospitalHong Kong 999077China Department of Obstetrics and Gynaecology Kwong Wah HospitalHong Kong 999077China Department of Obstetrics and Gynaecology Pamela Youde Nethersole Eastern HospitalHong Kong 999077China Department of Obstetrics and Gynaecology Queen Mary HospitalHong Kong 999077China

Objective:To report the clinical maternal and fetal outcomes of pregnant women with coronavirus disease 2019(COVID-19),along with any associated pregnancy complications,in Hong Kong,China,and to assess the impact of COVID-19 vaccination on these ***:This prospective registry-based observational study included pregnant women who were recruited through convenient sampling and had a laboratory-confirmed severe acute respiratory syndrome coronavirus 2 infection with a cycle threshold(Ct)value result available on admission to eight local hospitals in Hong Kong,*** on clinical symptoms,laboratory results,medical treatments,delivery timing and mode,and pregnancy complications were extracted from the Hospital Authority’s electronic medical record ***,fetal,and pregnancy outcomes were compared between unvaccinated pregnant women with COVID-19 and those who had received at least one dose of COVID-19 vaccine before *** continuous variables and categorical variables were analyzed using the Mann-Whitney U test and the Pearson’s chi-squared test respectively.A P value less than 0.05 was considered statistically ***:A total of 164 pregnant women were included,of whom 78(47.56%)were ***-19 was diagnosed before 28 weeks’gestation in 30(18.29%),while 134(81.71%)were diagnosed at or after 28 weeks’***-two(37.80%)women received at least one dose of COVID-19 *** were no significant differences between vaccinated and unvaccinated groups in the time interval between COVID-19 diagnosis and delivery,the Ct value,and the gestational age at infection onset or delivery(P>0.05).The majority of women were symptomatic at diagnosis regardless of vaccination status 55(88.71%)in vaccinated group vs.78(76.47%)in unvaccinated group(P=0.052).Symptoms did not significantly differ between groups except for cough(62.90%vs.47.06%,P=0.049).The overall rate of severe COVID-19 in pregnant women was *** t

关键词： COVID-19 Maternal outcomes Fetal outcomes Pregnancy complications Severe COVID-19

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Multi-Smart Meter Data Encryption Scheme Basedon Distributed Differential Privacy

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Big Data Mining and Analytics 2024年第1期7卷 131-141页

作者： Renwu Yan Yang Zheng Ning yu Cen Liang School of Electronic Electrical Engineering and PhysicsFujian University of TechnologyFuzhou 350118China Department of Computing Sciences at The College at Brockport State University of New YorkNew YorkNY 14420USA

Under the general trend of the rapid development of smart grids,data security and privacy are facing serious challenges;protecting the privacy data of single users under the premise of obtaining user-aggregated data has attracted widespread *** this study,we propose an encryption scheme on the basis of differential privacy for the problem of user privacy leakage when aggregating data from multiple smart ***,we use an improved homomorphic encryption method to realize the encryption aggregation of users’***,we propose a double-blind noise addition protocol to generate distributed noise through interaction between users and a cloud platform to prevent semi-honest participants from stealing data by colluding with one ***,the simulation results show that the proposed scheme can encrypt the transmission of multi-intelligent meter data under the premise of satisfying the differential privacy *** if an attacker has enough background knowledge,the security of the electricity information of one another can be ensured.

关键词： smart grid homomorphic encryption data aggregation differential privacy cloud computing

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UAV-assisted cooperative offloading energy efficiency system for mobile edge computing

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Digital Communications and Networks 2024年第1期10卷 16-24页

作者： Xue-Yong yu Wen-Jin Niu Ye Zhu Hong-Bo Zhu Jiangsu Key Laboratory of Wireless Communications Nanjing University of Posts and Telecommunications Nanjing210003China Engineering Research Centerof Health Service System Based on Ubiquitous Wireless Networks Ministry of EducationNanjng Universityof Posts and Telecommunications Nanjing210003China

Reliable communication and intensive computing power cannot be provided effectively by temporary hot spots in disaster areas and complex terrain ground *** this has greatly developed the application and integration of UAV and Mobile Edge Computing(MEC)to the Internet of Things(loT).However,problems such as multi-user and huge data flow in large areas,which contradict the reality that a single UAV is constrained by limited computing power,still *** to allowing UAV collaboration to accomplish complex tasks,cooperative task offloading between multiple UAVs must meet the interdependence of tasks and realize parallel processing,which reduces the computing power consumption and endurance pressure of *** the computing requirements of the user terminal,delay constraint of a computing task,energy constraint,and safe distance of UAV,we constructed a UAV-Assisted cooperative offloading energy efficiency system for mobile edge computing to minimize user terminal energy ***,the resulting optimization problem is originally nonconvex and thus,difficult to solve *** tackle this problem,we developed an energy efficiency optimization algorithm using Block Coordinate Descent(BCD)that decomposes the problem into three convex ***,we jointly optimized the number of local computing tasks,number of computing offloaded tasks,trajectories of UAV,and offloading matching relationship between multi-UAVs and multiuser *** results show that the proposed approach is suitable for different channel conditions and significantly saves the user terminal energy consumption compared with other benchmark schemes.

关键词： Computation offloading Internet of things(IoT) Mobile edge computing(MEC) Block coordinate descent(BCD)

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Diverse atomic structure configurations of metal-doped transition metal dichalcogenides for enhancing hydrogen evolution

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Nano Research 2024年第5期17卷 3586-3602页

作者： Longlu Wang yuxin Zhang Chen Gu Haoxuan yu Yanling Zhuang Zechao Zhuang College of Electronic and Optical Engineering and College of Flexible Electronics(Future Technology) Jiangsu Province Engineering Research Center for Fabrication and Application of Special Optical Fiber Materials and DevicesNanjing University of Posts and TelecommunicationsNanjing 210023China Department of Chemical Engineering Columbia UniversityNew YorkNY 10027USA

Doping foreign metal atoms into the substrate of transition metal dichalcogenides(TMDs)enables the formation of diverse atomic structure configurations,including isolated atoms,chains,and ***,it is very important to reasonably control the atomic structure and determine the structure-activity relationship between the atomic configurations and the hydrogen evolution reaction(HER)*** numerous studies have indicated that doping can yield diverse atomic structure configurations,there remains an incomplete understanding of the relationship between atomic configurations within the lattice of TMDs and their ***,diverse atomic structure configurations of adsorptive doping,substitutional doping,and TMDs alloys are *** structure-activity relationship between different atomic configurations and HER performance can be determined by micro-nanostructure devices and density functional theory(DFT)*** diverse atomic structure configurations are of great significance for activating the inert basal plane of TMDs and improving the catalytic activity of ***,we have summarized the current challenges and future opportunities,offering new perspectives for the design of highly active and stable metal-doped TMDs catalysts.

关键词： transition metal dichalcogenides(TMDs) dopant effect diverse atomic structure configurations hydrogen evolution reaction(HER)

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“Steric Armor”Strategy of Blue Fluorescent Emitters against Photooxidation-Induced Degradation

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Chinese Journal of Chemistry 2024年第11期42卷 1223-1229页

作者： Sha-Sha Wang Jing-Rui Zhang Kuan-De Wang Hao-Ran Li Peng-Hui Meng Yang Zhou Xiang yu Ying Wei Quan-You Feng yu-He Kan Ling-Hai Xie Centre for Molecular Systems and Organic Devices(CMSOD) State Key Laboratory of Organic Electronics and Information Displays&Institute of Advanced MaterialsJiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing University of Posts&TelecommunicationsNanjingJiangsu210023 China Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials School of Chemistry and Chemical EngineeringHuaiyin Normal UniversityHuai'anJiangsu223300 China

Stability against oxygen is an important factor affecting the performance of organic semiconductor *** photooxidation stability can prolong the service life of the device and maintain the mechanical and photoelectric properties of the ***,various encapsulation methods from molecular structure to macroscopic device level are used to improve photooxidation ***,we adopted a crystallization strategy to allow 14H-spiro[dibenzo[c,h]acridine-7,9′-fluorene](SFDBA)to pack tightly to resist fluorescence decay caused by *** this case,the inert group of SFDBA acts as a“steric armor”,protecting the photosensitive group from being attacked by ***,compared with the fluorescence quenching of SFDBA powder under 2 h of sunlight,SFDBA crystal can maintain its fluorescence emission for more than 8 h under the same ***,the photoluminescence quantum yields(PLQYs)of the crystalline film is 327%higher than that of the amorphous *** shows that the crystallization strategy is an effective method to resist oxidation.

关键词： Organic semiconductor Photooxidation Spirocyclic aromatic hydrocarbons Crystal engineering Fluorescence

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Cdc42 deletion yielded enamel defects by disrupting mitochondria and producing reactive oxygen species in dental epithelium

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Genes & Diseases 2024年第5期11卷 335-349页

作者： Jinxuan Zheng Rongcheng yu Yiqi Tang Sihui Su Sainan Wang Chenxi Liao Xuecong Li Jiabin Liao Dongsheng yu Tingting Ai Wei Zhao Vicky Yau Chufeng Liu Liping Wu Yang Cao Hospital of Stomatology Guanghua School of StomatologyGuangdong Provincial Key Laboratory of StomatologySun Yat-sen UniversityGuangzhouGuangdong 510055China Guangdong Provincial Key Laboratory of Oral Diseases GuangzhouGuangdong 510055China Department of Cariology and Endodontology Peking University School and Hospital of Stomatology&National Center for Stomatology&National Clinical Research Center for Oral Diseases&National Engineering Research Center of Oral Biomaterials and Digital Medical DevicesBeijing 100081China Department of Oral and Maxillofacial Surgery University at BuffaloBuffaloNY 14214USA Department of Orthodontics Stomatological HospitalSouthern Medical UniversityGuangzhouGuangdong 510280China

Developmental defects of enamel are common due to genetic and environmental factors before and after ***42,a Rho family small GTPase,regulates prenatal tooth development in ***,its role in postnatal tooth development,especially enamel formation,remains ***,we investigated Cdc42 functions in mouse enamel development and tooth repair after ***42 showed highly dynamic temporospatial patterns in the developing incisors,with robust expression in ameloblast and odontoblast ***,epithelium-specific Cdc42 deletion resulted in enamel defects in *** differentiation was inhibited,and hypomineralization of enamel was observed upon epithelial Cdc42 *** analysis showed that abnormal mitochondrial components,phosphotransferase activity,and ion channel regulator activity occurred in the Cdc42 mutant dental *** oxygen species accumulation was detected in the mutant mice,suggesting that abnormal oxidative stress occurred after Cdc42 ***,Cdc42 mutant mice showed delayed tooth repair and generated less calcified *** dysfunction and abnormal oxygen consumption were evidenced by reduced Apool and Timm8a1 expression,increased Atp5j2 levels,and reactive oxygen species overproduction in the mutant repair ***-specific Cdc42 deletion attenuated ERK1/2 signaling in the labial cervical *** Sox2 expression in the mutant labial cervical loop after clipping might lead to delayed tooth *** findings suggested that mitochondrial dysfunction,up-regulated oxidative stress,and abnormal ion channel activity may be among multiple factors responsible for the observed enamel defects in Cdc42 mutant ***,Cdc42 exerts multidimensional and pivotal roles in enamel development and is particularly required for ameloblast differentiation and enamel matrix formation.

关键词： Cdc42 Enamel defects Mitochondrial dysfunction Rho GTPase Tooth repair

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Effective strategies to promote Z(S)-scheme photocatalytic water splitting

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Chinese Chemical Letters 2024年第3期35卷 27-39页

作者： Ye yuan Junan Pan Weinan Yin Haoxuan yu Fengshun Wang Weifeng Hu Longlu Wang Dafeng Yan College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology) Nanjing University of Posts&Telecommunications(NUPT)Nanjing 210023China College of Chemistry and Chemical Engineering Hubei UniversityWuhan 430062China

Artificial Z(S)-scheme photocatalytic water splitting systems have attracted extensive attention due to their advantages such as wide light absorption range,high charge separation efficiency and strong carrier redox ***,it is still challenging to design and prepare Z(S)-scheme photocatalysts with low-cost and highly stability for efficiently photocatalytic overall water splitting using solar *** review mainly introduces various strategies to improve the photocatalytic water splitting performance of Z(S)-scheme *** strategies mainly focus on enhancing or extending the range of light absorption,promoting charge separation,and enhancing surface redox reaction in Z(S)-scheme ***,the main challenges of Z(S)-scheme photocatalytic water splitting systems and their future development directions are pointed *** review would be beneficial to understanding the challenges and opportunities faced by the research field of Z(S)-scheme photocatalytic systems,and has important guiding significance for the development and utilization of high-performance Z(S)-scheme photocatalytic reaction system in the future.

关键词： Z(S)-scheme Overall water splitting Light absorption Charge separation Loading co-catalyst

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Nitrogen and phosphorus fertilization leads to soil arbuscular mycorrhizal fungal diversity changes and rainfed crop yield increase on the Loess Plateau of China:A 37-year study

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Pedosphere 2024年第2期34卷 328-338页

作者： Yi WANG Wenting ZHANG Chunyue LI Shun CHANG yu MIAO Qianxue LI Zhaoyang KOU Tinghui DANG State Key Laboratory of Loess and Quaternary Geology Institute of Earth EnvironmentChinese Academy of SciencesXi'an 710061China School of Geography and Tourism Shaanxi Normal UniversityXi'an 710119China Institute of Soil and Water Conservation Northwest A&F UniversityYangling 712100China

More than 80%of plants form mutualistic symbiotic relationships with arbuscular mycorrhizal fungi(AMF),and the application of fertilizers,such as nitrogen(N)and phosphorus(P)fertilizers,is a common agricultural management practice to improve crop yield and ***,the potential effects of long-term N and P fertilization on the AMF community in the rainfed agricultural system of the Loess Plateau of China are still not well *** this study,a long-term field experiment was conducted based on orthogonal design,with three N levels(0,90,and 180 kg ha^(-1)year^(-1))and three P levels(0,90,and 180 kg ha^(-1)year^(-1))for wheat *** in AMF community and correlations between AMF community composition,soil environmental factors,and wheat yield component traits were analyzed using traditional biochemical methods and high-throughput sequencing *** results showed that long-term N and P addition had a significant effect on the AMF community structure and *** application alone significantly reduced the richness and diversity of AMF community,whereas the combined application of N and P significantly increased the richness and diversity of AMF *** AMF community was driven mainly by soil available P,total P,and *** was a significant positive correlation between Glomus abundance and wheat yield and a significant negative correlation between Paraglomus abundance and wheat ***-term N and P addition directly increased crop yield and affected yield indirectly by influencing soil chemical properties and the AMF *** application of N and P both at90 kg ha^(-1)year^(-1)could improve the ecological and physiological functions of the AMF community and benefit the sustainable development of rainfed agriculture.

关键词： Glomus long-term fertilization microbial community Paraglomus rainfed agriculture wheat

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Digital Twins for Wastewater Treatment:A Technical Review

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Engineering 2024年第5期36卷 21-35页

作者： Ai-Jie Wang Hewen Li Zhejun He yu Tao Hongcheng Wang Min Yang Dragan Savic Glen TDaigger Nanqi Ren School of Civil and Environmental Engineering Harbin Institute of Technology(Shenzhen)Shenzhen 518055China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyHarbin 150090China Department of Civil and Environmental Engineering Cornell UniversityIthacaNY 14850USA BIOMATH Department of Data Analysis and Mathematical ModellingGhent UniversityGhent 9000Belgium KWR Water Research Institute Nieuwegein 3430 BBNetherlands Centre for Water Systems University of ExeterExeter EX44QFUK Department of Civil and Environmental Engineering University of MichiganAnn ArborMI 48109USA

The digital twins concept enhances modeling and simulation through the integration of real-time data and *** review elucidates the foundational elements of digital twins,covering their concept,entities,domains,and key *** specifically,we investigate the transformative potential of digital twins for the wastewater treatment engineering *** discussion highlights the application of digital twins to wastewater treatment plants(WWTPs)and sewage networks,hardware(i.e.,facilities and pipes,sensors for water quality and activated sludge,hydrodynamics,and power consumption),and software(i.e.,knowledge-based and data-driven models,mechanistic models,hybrid twins,control methods,and the Internet of Things).Furthermore,two cases are provided,followed by an assessment of current challenges in and perspectives on the application of digital twins in *** review serves as an essential primer for wastewater engineers navigating the digital paradigm shift.

关键词： Digital twins Urban water systems Wastewater treatment

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Designing multi-heterogeneous interfaces of Ni-MoS_(2)@NiS_(2)@Ni_(3)S_(2)hybrid for hydrogen evolution

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Nano Research 2024年第6期17卷 4782-4789页

作者： Haoxuan yu Junan Pan yuxin Zhang Longlu Wang Huachao Ji Keyu Xu Ting Zhi Zechao Zhuang College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology) Nanjing University of Posts&Telecommunications(NJUPT)Nanjing 210023China Department of Chemical Engineering Columbia UniversityNew YorkNY 10027USA

The transition metal chalcogenides represented by MoS_(2)are the ideal choice for non-precious metal-based hydrogen evolution ***,whether in acidic or alkaline environments,the catalytic activity of pure MoS_(2)is still difficult to compete with *** studies have shown that the electronic structure of materials can be adjusted by constructing lattice-matched heterojunctions,thus optimizing the adsorption free energy of intermediates in the catalytic hydrogen production process of materials,so as to effectively improve the electrocatalytic hydrogen production activity of ***,it is still a great challenge to prepare heterojunctions with lattice-matched structures as efficient electrocatalytic hydrogen production ***,we developed a one-step hydrothermal method to construct Ni-MoS_(2)@NiS_(2)@Ni_(3)S_(2)(Ni-MoS_(2)on behalf of Ni doping MoS_(2))electrocatalyst with multiple heterogeneous interfaces which possesses rich catalytic reaction *** Ni-MoS_(2)@NiS_(2)@Ni_(3)S_(2)electrocatalyst produced an extremely low overpotential of 69.4 mV with 10 mA·cm^(−2)current density for hydrogen evolution reaction(HER)in 1.0 M *** work provides valuable enlightenment for exploring the mechanism of HER enhancement to optimize the surface electronic structure of MoS_(2),and provides an effective idea for constructing rare metal catalysts in HER and other fields.

关键词： MoS_(2) heterojunctions multiple heterogeneous interfaces hydrogen evolution

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