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Effect of reaction and post-treatment conditions on physico-chemical properties of magnetic iron oxide nano-particles Author links open overlay panel

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Particuology 2024年第8期91卷 155-167页

作者： Masome Moeni Mohamed Edokali matthew rogers Oscar Cespedes Louey Tliba Tamseela Habib Robert Menzel Ali Hassanpour School of Chemical and Process Engineering Faculty of Engineering and Physical ScienceUniversity of LeedsLeedsLS29JTUK School of Physics and Astronomy Faculty of Engineering and Physical ScienceUniversity of LeedsLeedsLS29JTUK Mechanical Engineering Department University of Engineering&TechnologyLahorePakistan School of Chemistry Faculty of Engineering and Physical ScienceUniversity of LeedsLeedsLS29JTUK

Poor stability and dispersibility,as well as aggregation are considered as major challenges in clinical application of iron oxide nanoparticles(IONPs).Several studies have shown that the synthesis parameters and post-synthesis treatments e.g.,drying methods,have the capability to improve the particles'***,we investigate the combined effect of synthesis and post-treatment parameters on the particle size,stability and magnetism of ***(Fe_(3)O_(4))NPs were prepared via co-precipitation and post-treated using different methods,i.e.(i)freeze dried at-53℃,0.133 mbar for 48 h(liquid nitrogen frozen(LFD)and freezer frozen(FFD)),(ii)vacuum oven dried(VOD)at 60℃for 24 h,and(iii)kept wet colloidal(WET),dispersed in deionized *** Fe_(3)O_(4)NPs’chemical functional groups,size,shape,crystallinity,stability,aggregation,porosity,and magnetic properties were further analysed using different characterisation *** results showed that,while the WET sample had the best stability and significantly less aggregation at different temperatures,amongst post-treated Fe_(3)O_(4)NPs,LFD sample exhibited the best stability(up to 37℃),dispersion and smallest polydispersity ***,all dried NPs had superparamagnetic characteristics,while,LFD Fe_(3)O_(4)NPs had better magnetic properties and stability than other drying methods.

关键词： Iron oxide nanoparticles Co-precipitation Stability Aggregation Magnetic properties

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Distributed Secondary Control Based on Dynamic Diffusion Algorithm for Current Sharing and Average Voltage Regulation in DC Microgrids

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Journal of Modern Power Systems and Clean Energy 2024年第2期12卷 597-607页

作者： Dawei Liao Fei Gao Daniel J.rogers Wentao Huang Dong Liu Houjun Tang Department of Electrical Engineering Shanghai Jiao Tong UniversityShanghaiChina Department of Engineering Science University of OxfordOxford OX12JDU.K. IEEE

This paper introduces a distributed secondary control scheme for achieving current sharing and average voltage regulation objectives in a DC *** proposed scheme employs a dynamic diffusion algorithm(DDA)instead of the consensus algorithm to enable distributed communication among *** help understand DDA,the relation of DDA and other diffusion algorithms is discussed in detail and its superiority is shown by comparison with diffusion and consensus ***,considering the discrete nature and different sampling time of the digital controller and communication network,a z-domain model of the entire DC microgrid is *** influence of communication and secondary control parameters on the system stability is *** on the established model,the tolerable communication rates are ***-time simulations conducted on the OPAL-RT platform validate the effectiveness of the proposed scheme,showcasing its advantages in terms of convergence speed and stability.

关键词： Cooperative control DC microgrid diffusion algorithm discrete-time modeling distributed secondary control

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Psychiatric comorbidities in children with conduct disorder:a descriptive analysis of real-world data

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General Psychiatry 2024年第2期37卷 301-305页

作者： Tashalee R Brown Anita S Kablinger Robert Trestman Eraka Bath Cynthia rogers Binx Yezhe Lin Kevin Young Xu University of California Los Angeles David Geffen School of Medicine Los AngelesCaliforniaUSA Department of Psychiatry and Behavioral Medicine Virginia Tech Carilion School of MedicineRoanokeVirginiaUSA Washington University in St Louis School of Medicine St LouisMissouriUSA Clinical Research Center for Mental Disorders Chinese-German Institute of Mental HealthShanghai Pudong New Area Mental Health CenterSchool of MedicineTongji UniversityShanghaiChina Department of Psychosomatic Medicine Shanghai East HospitalTongji University School of MedicineShanghaiChina Department of Psychiatry Washington University School of Medicine in Saint LouisSt LouisMissouriUSA

To the editor:Two recent advisories from the US surgeon general have underscored the unprecedented public health crisis in youth mental health and emphasised the need for“timely data collection and research to identify and respond to youth mental health needs more rapidly”.1 Increased rates of suicidal behaviour,depression and anxiety symptoms and substance use.

关键词： morbid Psychiat editor

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Oncologic outcomes with and without amniotic membranes in robotic-assisted radical prostatectomy:A propensity score matched analysis

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Asian Journal of Urology 2024年第1期11卷 19-25页

作者： Jonathan Noël Daniel Stirt Marcio Covas Moschovas Sunil Reddy Abdel Rahman Jaber Marco Sandri Seetharam Bhat Travis rogers Subuhee Ahmed Anya Mascarenhas Ela Patel Vipul Patel Advent Health Global Robotics Institute CelebrationFLUSA University of Central Florida College of Medicine OrlandoFLUSA Big and Open Data Innovation Laboratory University of BresciaItaly SUNY Upstate Medical University SyracuseNYUSA Kansas City University College of Medicine Kansas CityMOUSA Harvard University CambridgeMAUSA

Objective:Placement of human placenta derived grafts during robotic-assisted radical prostatectomy(RARP)hastens the return of continence and *** long-term impact on the oncologic outcomes remains to be *** objective was to determine the oncologic outcomes of patients with dehydrated human amnion chorion membrane(dHACM)at RARP compared to a matched ***:In a referral centre,from August 2013 to October 2019,599 patients used dHACM in bilateral nerve-sparing *** excluded patients with less than 12 months follow-up,simple prostatectomy,and unilateral *** with dHACM(amnio group)were 529,and were propensity score matched 1:1 to 2465 patients without dHACM(non-amnio group)and a minimum follow-up of 36 *** the time of RARP,dHACM was placed around the neurovascular bundle in the amnio *** and categorical variables in matched groups was tested by two-sample Kolmogorov-Smirnov test and Fisher's exact test *** measured were biochemical recurrence(BCR),adjuvant and salvage therapy ***:Propensity score matching resulted in two groups of 444 *** incidence functions for BCR did not show a difference between the groups(p=0.3).Patients in the non-amnio group required salvage therapy more frequently than the amnio group,particularly after partial nerve-sparing RARP(6.3%vs.2.3%,p=0.001).Limitations are the absence of prospective ***:The data suggest that using dHACM does not have a negative impact on BCR in *** of cancer specific and overall survival will require follow-up study to increase our understanding of these grafts’impact on prostate cancer biology.

关键词： Prostatectomy Prostatecancer Robotic Oncology Outcome Allograft Biomaterial Dehydrated human amnionchorion membrane

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Modeling Blood Flow in Veins of Uniform Properties (Giraffe Jugular Vein)

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Open Journal of Biophysics 2024年第2期14卷 132-153页

作者： rogers Omboga Amenya Johanna Kibet Sigey Geoffrey Moriaso Ole Maloiy David Mwangi Theuri Department of Mathematics and Physical Sciences Dedan Kimathi University of Technology Nyeri Kenya Department of Pure and Applied Mathematics School of Mathematical Sciences Jomo Kenyatta Unversity of Agriculture and Technology Kisii Kenya Institute of Animal Physiology and Biotechnology Research University of Nairobi Nairobi Kenya

This paper models the giraffe’s jugular veins as a uniform collapsible tube from a rigid skull. The equations governing one-dimensional steady flow through such a tube for various conditions have been developed. The effects of inertial and inclination angles that have not been discussed previously have been included. It has been shown that different flows for a uniform tube (vein) are possible. However, this flow matches that of a jugular vein which is supercritical, and the steady solution has been given by the balance between the driving forces of gravity and the viscous resistance to the flow at the right atrium of the heart must be sub-critical for a fixed right-atrium pressure which means that an elastic jump is required to return the flow to sub-critical from the supercritical flow upstream this type of relationship gives rise to flow limitation at the same time given any right atrium fixed pressure there exists a maximum flow rate which when exceeded the boundary conditions of the flow do not hold boundary conditions at the right atrium are not satisfied hence making the steady flow impossible this mechanism of flow limitation is slightly different from the other one in that causes airways through forced expiration from the observation made it is clearly shown that there is an intravascular pressure difference with a change in height.

关键词： Blood Flow Jugular Vein Cross-Sectional Area Supercritical Subcritical Jump

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新兴和发展中经济体的资本管制与美国货币政策的传导

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新金融 2024年第4期 21-28,36页

作者： Jongrim Ha Haiqin Liu John rogers 李丽丽(译) 周正铭(译) 世界银行复旦大学不详

与发达经济体相比,新兴市场和发展中经济体(EMDEs)的资产收益波动性要大得多。学术界对此现象的研究结果是“各国无法从全球金融周期中脱钩”。文章利用1995—2019年间78个国家的结构向量自回归模型,以及文献中识别美国货币政策冲击的... 详细信息

与发达经济体相比,新兴市场和发展中经济体(EMDEs)的资产收益波动性要大得多。学术界对此现象的研究结果是“各国无法从全球金融周期中脱钩”。文章利用1995—2019年间78个国家的结构向量自回归模型,以及文献中识别美国货币政策冲击的不同方法,检验了资本账户开放程度较低的国家对美国货币政策冲击的系统性反应小于资本管制宽松的国家这一命题。文章还考虑了汇率制度和外汇干预等其他制度特征在解释各国对冲击的反应差异方面的作用。实证结果表明:较严格的资本管制会使利率和汇率对美国货币政策冲击的反应较小,该结果在新兴市场经济国家中更为显著;只有微弱的证据表明汇率的灵活程度会影响美国对外国利率和汇率的溢出效应。本刊编译此篇世界银行的研究报告,以飨读者。

关键词：资本管制溢出效应资本流动管理全球金融周期美联储

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Urban heat mitigation by green and blue infrastructure:Drivers,effectiveness,and future needs

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The Innovation 2024年第2期5卷 145-166页

作者： Prashant Kumar Sisay E.Debele Soheila Khalili Christos H.Halios Jeetendra Sahani Nasrin Aghamohammadi Maria de Fatima Andrade Maria Athanassiadou Kamaldeep Bhui Nerea Calvillo Shi-Jie Cao Frederic Coulon Jill L.Edmondson David Fletcher Edmilson Dias de Freitas Hai Guo matthew C.Hort Madhusudan Katti Thomas Rodding Kjeldsen Steffen Lehmann Giuliano Maselli Locosselli Shelagh K.Malham Lidia Morawska Rajan Parajuli Christopher D.F.rogers Runming Yao Fang Wang Jannis Wenk Laurence Jones Global Centre for Clean Air Research(GCARE) School of SustainabilityCivil and Environmental EngineeringFaculty of Engineering and Physical SciencesUniversity of SurreyGuildford GU27XHUK Institute for Sustainability University of SurreyGuildford GU27XHSurreyUK School of Built Environment University of ReadingWhiteknightsReading RG66BUUK School Design and the Built Environment Curtin University Sustainability Policy InstituteKent StBentley 6102Western Australia Harry Butler Institute Murdoch UniversityMurdoch 6150Western Australia Atmospheric Sciences Department Institute of AstronomyGeophysics and Atmospheric SciencesUniversity of Sao PauloSao Paulo 05508-090Brazil Met Office FitzRoy RoadExeter EX13PBUK Department of Psychiatry and Nuffield Department of Primary Care Health Sciences Wadham CollegeUniversity of OxfordOxfordUK Centre for Interdisciplinary Methodologies University of WarwickWarwickUK School of Architecture Southeast University2 SipailouNanjing 210096China Cranfield University School of WaterEnvironment and EnergyCranfield MK430ALUK Plants PhotosynthesisSoil ClusterSchool of BiosciencesUniversity of SheffieldSheffield S102TNUK UK Centre for Ecology&Hydrology Environment Centre WalesDeiniol RoadBangor LL572UWUK Air Quality Studies Department of Civil and Environmental EngineeringThe Hong Kong Polytechnic UniversityHong KongChina Department of Forestry and Environmental Resources Faculty Excellence Program for Leadership in Public ScienceNorth Carolina State UniversityChancellorRaleighNC 27695USA Departments of Architecture&Civil Engineering and Chemical EngineeringUniversity of BathBath BA27AYUK School of Architecture University of NevadaLas VegasNV 89154USA Department of Tropical Ecosystems Functioning Center of Nuclear Energy in AgricultureUniversity of São PauloPiracicaba 13416-000Sao PauloBrazil School of Ocean Sciences Bangor UniversityMenai BridgeAnglesey LL595 ABUK International Laboratory for Air Quality and Health Science and Engine

The combination of urbanization and global warming leads to urban overheating and compounds the frequency and intensity of extreme heat events due to climate ***,the risk of urban overheating can be mitigated by urban green-blue-grey infrastructure(GBGI),such as parks,wetlands,and engineered greening,which have the potential to effectively reduce summer air *** many reviews,the evidence bases on quantified GBGI cooling benefits remains partial and the practical recommendations for implementation are *** systematic literature review synthesizes the evidence base for heat mitigation and related co-benefits,identifies knowledge gaps,and proposes recommendations for their implementation to maximize their *** screening 27,486 papers,202 were reviewed,based on 51 GBGI types categorized under 10 main *** GBGI(green walls,parks,street trees)have been well researched for their urban cooling ***,several other GBGI have received negligible(zoological garden,golf course,estuary)or minimal(private garden,allotment)*** most efficient air cooling was observed in botanical gardens(5.0±3.5℃),wetlands(4.9±3.2℃),green walls(4.1±4.2℃),street trees(3.8±3.1℃),and vegetated balconies(3.8±2.7℃).Under changing climate conditions(2070–2100)with consideration of RCP8.5,there is a shift in climate subtypes,either within the same climate zone(e.g.,Dfa to Dfb and Cfb to Cfa)or across other climate zones(e.g.,Dfb[continental warm-summer humid]to BSk[dry,cold semi-arid]and Cwa[temperate]to Am[tropical]).These shifts may result in lower efficiency for the current GBGI in the *** the importance of multiple services,it is crucial to balance their functionality,cooling performance,and other related co-benefits when planning for the future *** global GBGI heat mitigation inventory can assist policymakers and urban planners in prioritizing effective interventions to reduce the risk of urban overheating,fi

关键词： estuary walls extreme

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从零配件业务中获利

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商学院 2005年第10期 82-83页

作者： Tim Gallagher Mark D.Mitchke matthew C.rogers 麦肯锡洛杉矶分公司麦肯锡太平洋西北部分公司麦肯锡旧金山分公司

价值4000亿美元的全球零配件市场包含了各种产品，从一次性墨盒到游船发动机。零配件销售是耐用没备制造商的重要利润来源。事实上。财富100强中的大部分企业有40%的利润来自零配件销售。

关键词：零配件市场获利业务利润来源配件销售发动机一次性制造商美元财富

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混动飞机飞向蓝天

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科技纵览 2024年第2期 30-36,4页

作者： Amy Jankovsky Christine Andrews Bill rogers 不详

NASA、通用电气航空公司和波音公司正在合作开发一款混合动力客机。商业航空联结了现代世界。国际民用航空组织(ICAO)的数据表明,在全球新冠疫情之前,每天平均有1200万人乘坐约10万次商业航班。这些数字现在已经大幅回升:预计2023年行... 详细信息

NASA、通用电气航空公司和波音公司正在合作开发一款混合动力客机。商业航空联结了现代世界。国际民用航空组织(ICAO)的数据表明,在全球新冠疫情之前,每天平均有1200万人乘坐约10万次商业航班。这些数字现在已经大幅回升:预计2023年行业收入将达到8030亿美元,比2022年增长9.7%,接近2019年疫情前的峰值。

关键词：商业航空混合动力通用电气合作开发数据表波音公司航空公司疫情

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Insights into effects of algae on decay and distribution of bacterial pathogens in recreational water:Implications for microbial risk management

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Journal of Environmental Sciences 2022年第3期34卷 92-103页

作者： Tingting Fang Zuotao Zhang Hui Wang Matt rogers Qijia Cui State Key Joint Laboratory on Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Department of Civil and Environmental Engineering National University of SingaporeEngineering Drive 3117576Singapore

The decay and distribution of bacterial pathogens in water is an important information for the health risk assessment to guide water safety management, and suspended algae might affect bacterial pathogens in water. This study established microcosms to investigate the effects of algae-related factors on the representative indicators and opportunistic pathogen species in water. We found that suspended algae increased the persistence of targeted species by 1-2 orders of magnitude of concentrations compared to microcosms without algae;and the effect of algae on microbial survival was affected by water nutrient levels(i.e., carbon, nitrogen and phosphorus), as the increased microbial persistence were correlated to the increased algae concentrations with more nutrient supplies. Moreover, decay and distribution profiles of representative species were determined. The three opportunistic pathogen species( Pseudomonas aeruginosa, Aeromonas hydrophila and Staphylococcus aureus) showed lower decay rates(0.82–0.98/day, 0.76–0.98/day, 0.63–0.87/day) largely affected by algae-related factors, while the enteric species( Escherichia coli and Enterococcus faecalis) had higher decay rates(0.94–1.31/day, 0.89–1.21/day) with little association with algae, indicating the propensity for attachment to algae is an important parameter in microbial fate. Together results suggest suspended algae played an evident role in the decay and distribution of bacterial pathogens, providing important implications regarding microbial safety in recreational water.

关键词： Suspended algae Bacterial pathogen decay Bacterial pathogen distribution Recreational water Microbial risk assessment

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