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Effects of interlayer spacing and applied pressure on the lanthanide transport in MoS2-based two-dimensional channels

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International Journal of Smart and Nano Materials 2024年第3期15卷 579-592页

作者： Qinsi Xiong chong Liu george c.Schatz Department of chemistry Northwestern UniversityEvanstonILUSA Pritzker School of Molecular Engineering University of ChicagoChicagoILUSA

Rare-earth elements(REEs)are critical to modern industry but difficult to separate due to their subtle and monotonic changes in physico-chemical ***2-based two-dimensional(2D)materials offer novel opportunities for enhancing REE separation,exhibiting a distinct volcano-shaped transport performance distribution that peaks at Sm3+.However,the specific contributions of thermodynamic and kinetic factors to ion transport within 2D confinement remain *** this study,we conducted a series of non-equilibrium all-atom molecular dynamics(MD)simulations to explore the effects of interlayer spacing and external pressure on the transport of lanthanide ions inÅ-scale acetate functionalized 2D MoS2(MoS2-cOOH)*** examined ion entry and permeation rates,water flux,dehydration,and binding *** simulation results reveal that the transport trends of lanthanide ions are jointly driven by the dehydration degree and the relative-binding strengths of ions to water and to the acetate within the 2D ***,the dehydration pattern of lanthanide ions during permeation is closely linked to kinetic ***,this study provides a detailed atomistic understanding of the mechanisms under-lying lanthanide ion transport under *** findings point to the significant potential for tuning confinement and chemical functionalization withinÅ-scale channels for more efficient REE separation.

关键词： MoS_(2) 2D channels Lanthanide ions ion transport nanofluidics

Assessing the dynamics and impact of cOVID-19 vaccination on disease spread:A data-driven approach

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Infectious Disease Modelling 2024年第2期9卷 527-556页

作者： Farhad Waseel george Streftaris Bhuvendhraa Rudrusamy Sarat c.Dass School of Mathematical and computer Sciences Heriot-Watt University MalaysiaPutrajayaMalaysia School of Mathematical and computer Sciences Heriot-Watt UniversityEdinburghUnited Kingdom School of Engineering and Physical Sciences Heriot-Watt University MalaysiaPutrajayaMalaysia Maxwell Institute for Mathematical Sciences United Kingdom Faculty of Mathematics Kabul UniversityKabulAfghanistan

The cOVID-19 pandemic has significantly impacted global health,social,and economic situations since its emergence in December *** primary focus of this study is to propose a distinct vaccination policy and assess its impact on controlling cOVID-19 transmission in Malaysia using a Bayesian data-driven approach,concentrating on the year *** employ a compartmental Susceptible-Exposed-Infected-Recovered-Vaccinated(SEIRV)model,incorporating a time-varying transmission rate and a data-driven method for its estimation through an Exploratory Data Analysis(EDA)*** no vaccine guarantees total immunity against the disease,and vaccine immunity wanes over time,it is critical to include and accurately estimate vaccine efficacy,as well as a constant vaccine immunity decay or wane factor,to better simulate the dynamics of vaccine-induced protection over *** on the distribution and effectiveness of vaccines,we integrated a data-driven estimation of vaccine efficacy,calculated at 75%for Malaysia,underscoring the model's realism and relevance to the specific context of the *** Bayesian inference framework is used to assimilate various data sources and account for underlying uncertainties in model *** model is fitted to real-world data from Malaysia to analyze disease spread trends and evaluate the effectiveness of our proposed vaccination *** findings reveal that this distinct vaccination policy,which emphasizes an accelerated vaccination rate during the initial stages of the program,is highly effective in mitigating the spread of cOVID-19 and substantially reducing the pandemic peak and new *** study found that vaccinating 57–66%of the population(as opposed to 76%in the real data)with a better vaccination policy such as proposed here is able to significantly reduce the number of new infections and ultimately reduce the costs associated with new *** study contributes to the development of a robust and informati

关键词： Bayesian inference SEIRV cOVID-19 Vaccination policy Importance sampling Malaysia Data-driven

Secure smart contract-based digital twins for the Internet of Things

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Blockchain(Research and Applications) 2024年第1期5卷 39-49页

作者： Iakovos Pittaras Nikos Fotiou christos Karapapas Vasilios A.Siris george c.Polyzos Mobile Multimedia Laboratory Department of InformaticsSchool of Information Sciences and TechnologyAthens University of Economics and BusinessAthens10434Greece School of Data Science The Chinese University of Hong KongShenzhen518172China

The proliferation of Internet of Things(IoT)devices that operate unattended providing a multitude of important and often sensitive services highlights the need for seamless interoperability and increased *** argue that digital twins of IoT devices,with the right design,can enhance the security,reliability,auditability,and interoperability of IoT *** salient features of digital twins have made them key elements for the IoT and Industry *** this paper,we leverage advances in W3c’s Web of Things(WoT)standards and distributed ledger technologies(DLTs)to present a novel design of the smart contract-based digital twins with enhanced security,transparency,interoperability,and *** provide two different variations of that general design using two different blockchains(one public and one private,permissioned blockchain),and we present design ***,we introduce an architecture for accessing and controlling IoT devices securely and reliably,providing full auditability,while at the same time using the proposed digital twins as an indirection mechanism(proxy).The proposed architecture leverages the blockchain to offer notable properties,namely,decentralization,immutability,auditability,non-repudiation,availability,and ***,it introduces mass actuation,easier management of IoT devices,and enhanced security to the IoT gateways,enables new business models,and makes consumer devices(vendor-)agnostic.

关键词： Digital twins Internet of Things Web of Things Distributed ledger technologies Hyperledger Fabric Ethereum

Flexible ultra-thin super-resolution endoscopy

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Science china(Physics,Mechanics & Astronomy) 2024年第3期67卷 171-172页

作者： george S.D.Gordon Department of Electrical and Electronic Engineering University of NottinghamNottingham NG7 2RDUK

In recent years, multimode fiber(MMF) has become an important tool for high-resolution endoscopic imaging in narrow channels(e.g., in the brain via needles or inside blood vessels) due to its high mode density and fine diameter, typically cle to widespread deployment in applications is that realistic perturbations, including bending, twisting and changes in temperature, cause unacceptable image degradation.

关键词： fiber resolution typically

Unique Genetic Features of Lean NAFLD: A Review of Mechanisms and clinical Implications

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Journal of clinical and Translational Hepatology 2024年第1期12卷 70-78页

作者： Jasmine Tidwell george Y.Wu Department of Medicine University of Connecticut Health CenterFarmingtonCTUSA Division of Gastroenterology-Hepatology University of Connecticut Health CenterFarmingtonCTUSA

Non-alcoholic fatty liver disease(NAFLD)affects 25%of the global *** 20%have a normal body mass index(BMI)and a variant known as lean *** typical NAFLD cases associated with obesity and diabetes,lean NAFLD causes liver disease by mechanisms not related to excess weight or insulin *** disorders are among the major factors in developing lean NAFLD,and genome-wide association studies have identified several genes associated with the *** review aims to increase awareness by describing the genetic markers linked to NAFLD and the defects involved in developing lean NAFLD.

关键词： Lean nonalcoholic fatty liver disease Palatine-like phospholipase domain-containing-3 Transmembrane 6 superfamily member 2 Familial hypobetalipoproteinemia Abetalipoproteinemia

Heritable chronic cholestatic Liver Diseases:A Review

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Journal of clinical and Translational Hepatology 2024年第8期12卷 726-738页

chronic cholestasis due to heritable causes is usually diagnosedin ***,many cases can present andsurvive into *** time course varies considerablydepending on the underlying *** data usuallyreveal elevated conjugated hyperbilirubinemia,alkalinephosphatase,and gamma-glutamyl *** be asymptomatic;however,when present,the typicalsymptoms are pruritus,jaundice,fatigue,and *** diagnostic methods and management requireddepend on the underlying *** development of genome-wide associated studies has allowed the identificationof specific genetic mutations related to the pathophysiologyof cholestatic liver *** aim of this review was tohighlight the genetics,clinical pathophysiology,presentation,diagnosis,and treatment of heritable etiologies of chroniccholestatic liver disease.

关键词： chronic cholestasis cholestatic liver disease congenital hepatic fibrosis caroli disease caroli syndrome Alagille syndrome Biliary atresia

Accelerated thermal ageing on performance of polypropylene-based semiconducting screen for high voltage direct current cable applications-Effect of antioxidants

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High Voltage 2024年第2期9卷 410-418页

作者： Haitian Wang Yi Luo Mingyu Zhou Xintong Ren george chen GEIRI BerlinGermany The Tony Davies High Voltage Laboratory University of SouthamptonSouthamptonUK

The potential of using eco-friendly thermoplastic polypropylene(PP)-based insulation for high voltage direct current(HVDc)cable has been widely investigated but much less work on the PP-based semiconducting screen(Sc).considering a long service life(>30 years)under high temperature and high electrical stress is required for typical HVDc cables,and investigations on the effect of antioxidant(AO)concentration and thermal oxidative sta-bility,mechanical,and electrical properties of PP-based Scs have been *** has been demonstrated that an appropriate combination and amounts of AOs are critical for achieving high thermal stability and maintaining the mechanical properties of Sc after ageing in a harsh environment(150°c,with cu,in air,7 days).Although higher amounts of space charges have been observed in Sc/PP/Sc samples with higher AO concentrations,the impact on space charge behaviours is less after ageing,suggesting that ageing(or operating at high temperature)leads to microstructure evolution in Sc and can potentially mitigate space accumulation in PP-based insulating materials.

关键词： microstructure thermal high

Focal Nodular Hyperplasia: A comprehensive Review with a Particular Focus on Pathogenesis and complications

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Journal of clinical and Translational Hepatology 2024年第2期12卷 182-190页

作者： Jaimy Villavicencio Kim george Y.Wu Division of Gastroenterology-Hepatology University of Connecticut Health CenterFarmingtonCTUSA

Focal nodular hyperplasia is a benign tumor of the liver that is often found incidentally with *** purpose of this review is to discuss the pathophysiology,rare complications that can occur due to these lesions,and management options.A literature review was performed on clinical trials and case reports involving focal nodular hyperplasia complications and management of these,as well as the proposed pathogenesis underlying these *** exposure to oral contraceptive pills and endogenous hormones have been thought to play a role in the development of these lesions,this has not been *** recently,they are thought to arise as a consequence of a vascular anomaly causing alterations in the expression of angiopoietin *** are rare,but previous cases have reported associated pain,rupture and compression of nearby structures(hepatic vein,stomach,biliary system).Resection of focal nodular hyperplasia is not usually ***,if there is associated pain with no other identifiable cause or presence of a large or growing lesion with risk of causing a complication,then surgical resection,radiofrequency ablation or arterial embolization should be considered.

关键词： Focal nodular hyperplasia Oral contraceptives Liver lesion

Subnormal Serum Liver Enzyme Levels:A Review of Pathophysiology and clinical Significance

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Journal of clinical and Translational Hepatology 2024年第4期12卷 428-435页

作者： Elham M.Youssef george Y.Wu Biochemistry Department National Research CenterCairoEgypt Department of Medicine Division of Gastroenterology-HepatologyUniversity of Connecticut Health CenterFarmingtonCTUSA

Subnormal levels of liver enzymes,below the lower limit of normal on local laboratory reports,can be useful *** instance,subnormal levels of aminotransferases can be observed in vitamin B6 deficiency and chronic kidney *** alkaline phosphatase levels may indicate the presence of hypophosphatasia,Wilson's disease,deficiencies of divalent ions,or *** levels of gamma glutamyl transferase may be seen in cases of acute intrahepatic cholestasis,the use of certain medications,and in bone ***,subnormal levels of 5'-nucleotidase have been reported in lead poisoning and nonspherocytic hemolytic *** aim of this review is to bring attention to the fact that subnormal levels of these enzymes should not be ignored as they may indicate pathological conditions and provide a means of early diagnosis.

关键词： Transaminases Vitamin B6 celiac disease Renal insufficiency Hepatolenticular Degeneration crohn disease Malnutrition clofibrate Bone diseases Lead poisoning Anemia Hemolytic