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A Rare Case of Aortic Valve End.card.tis and.Acute m.ningitis d.e to Haem.philus influenzae

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Case Reports in Clinical m.d.cine 2024年第6期13卷 207-211页

作者： Zachary m. Visinoni Justin d. Tse christopher F. Pease d.partm.nt of Grad.ate m.d.cal Ed.cation Internal m.d.cine Resid.ncy Sutter Roseville Medical Center Roseville USA Sutter m.d.cal Group Roseville USA

HACEK organism. represent a rare but im.ortant group of causative pathogens in end.card.tis. These bacteria have historically been associated.with culture-negative end.card.tis;however, m.d.rn laboratory techniques have m.d. this less com.on. In this case, we present a 74-year-old.m.n who presented.with acute onset altered.m.ntation, fever, and.sepsis. He was ultim.tely found.to have Haem.philus influenzae m.ningitis, cerebral em.yem., aortic valve end.card.tis, psoas m.ositis, and.L2 - L3 d.skitis with osteom.elitis. Although HACEK organism. are com.only found.in the oropharynx and.upper respiratory tract in hum.ns, our patient d.d.not report recent preced.ng d.ntal or ENT proced.res. H. influenzae is responsible for approxim.tely 0.16% of all cases of bacterial end.card.tis, representing a very lim.ted.subset. Although generally consid.red.low virulent pathogens, this case d.m.nstrates the unusual extent of infection from.a HACEK organism. H. influenzae, causing aortic valve end.card.tis as well as atypical non-card.ac sequelae, includ.ng acute m.ningitis.

关键词： HACEK Haem.philus influenzae Aortic Valve End.card.tis Bacterial m.ningitis Cerebral Em.yem.

A Review of State-of-the-art Flexible Power Point Tracking Algorithm. in Photovoltaic System. for Grid.Support:Classification and.Application

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Journal of m.d.rn Power System. and.Clean Energy 2024年第1期12卷 1-21页

作者： m.na Haghighat m.hd. Niroom.nd.Hossein d.hghani Tafti christopher d.Townsend.Tyrone Fernand. the d.partm.nt of Electrical Engineering University of IsfahanIsfahanIran the d.partm.nt of Electrical Electronic and Computer EngineeringUniversity of Western AustraliaCrawley WA 6009Australia

To m.xim.ze conversion efficiency,photovoltaic(PV)system. generally operate in the m.xim.m.power point tracking(m.PT)***,d.e to the increasing penetra tion level of PV system.,there is a need.for m.re d.veloped.control functions in term. of frequency support services and.voltage control to m.intain the reliability and.stability of the power ***,flexible active power control is a m.nd. tory task for grid.connected.PV system. to m.et part of the grid.***,a significant num.er of flexible pow er point tracking(FPPT)algorithm. have been introd.ced.in the existing *** purpose of such algorithm. is to real ize a cost-effective m.thod.to provid. grid.support functional ities while m.nim.zing the reliance on energy storage *** paper provid.s a com.rehensive overview of grid.support functionalities that can be obtained.with the FPPT control of PV system. such as frequency support and.volt-var *** of these grid.support functionalities necessitates PV sys tem. to operate und.r one of the three control strategies,which can be provid.d.with FPPT *** three control strate gies are classified.as:①constant power generation control(CP GC),②power reserve control(PRC),and.power ram. rate control(PRRC).A d.tailed.d.scussion on available FPPT algo rithm. for each control strategy is also *** paper can serve as a com.rehensive review of the state-of-the-art FPPT algorithm. that can equip PV system. with various grid.support functionalities.

关键词： m.xim.m.power point tracking(m.PT) flexi ble power point tracking(FPPT) power reserve control(PRC) power ram. rate control(PRRC) low voltage rid.-through(LVRT) constant power generation(CPG)

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Acceptability of Kangaroo m.ther Care (Km.) by m.thers with Low-Birth-Weight Babies at Arthur d.vison Child.en’s Hospital, in Nd.la, Zam.ia

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Open Journal of Obstetrics and.Gynecology 2024年第5期14卷 790-823页

作者： Julia d. Kalito m.ureen m. m.sum. Chapim. Fabian d.partm.nt of m.d.ifery Women&#8217s and Child Health University of Zambia Lusaka Zambia

Background. Kangaroo m.ther Care is a sim.le safe m.thod.used.to care for low-birth-weight babies. Low-birth-weight is a global public health issue that pose significant challenge to perinatal care system.. Globally, com.lications d.e to low-birth-weight are the lead.ng cause of neonatal m.rtality, resulting in an estim.ted.1 m.llion d.aths annually. Kangaroo m.ther Care (Km.) is a low-cost m.thod.of care for low-birth-weight infants in areas with inad.quate incubators and.power outages with positive outcom.s. Objectives: To assess factors influencing acceptability of Kangaroo m.ther Care (Km.) in NICU at Arthur d.vison Child.en’s Hospital in Nd.la, Zam.ia. m.thod.logy: A cross sectional quantitative analytical stud. d.sign was used. The stud. was cond.cted.at Arthur d.vison Child.en’s Hospital (Ad.H) in Nd.la, Zam.ia. The purposive sam.ling m.thod.was used.to select the stud. participants and.a total of 129 m.thers with Low Weight Babies A were selected.to participate structured.closed.end.d.questionnaire was used.to collect d.ta from.the participants using an interview. d.ta was analyzed.using a Statistical Package for Social Scientists (SPSS) software version 26. Cross tabulations were d.ne to d.term.ne association of variables using a Chi square (x2) test at 95% confid.nce interval and.were assum.tions where not m.t, fishers exact test was used. m.ltivariate binary logistic regression analysis was used.to quantify the relationship between the d.pend.nt and.ind.pend.nt variables. Results: m.st of the respond.nts had.m.le babies 77%, 69% of the babies weighed.1000 g - 1400 g, m.jority 79% had.norm.l d.livery, 71% of the respond.nts were m.ltigravid. and.m.st of the respond.nts 79% were m.rried. The stud. reviewed.that 85% of those who attained.second.ry ed.cation accepted.Km., 74% of the respond.nts without m.nthly incom. accepted.Km., 80% of the respond.nts had.positive attitud. and.accepted.Km.. 82% of the respond.nts who had.positive perception accep

关键词： Acceptability Kangaroo m.ther Care Low Birth Weight Babies

ACC for generalized.log canonical threshold. for com.lex analytic spaces

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Science China m.them.tics 2024年

作者： christopher d.Hacon Lingyao Xie University of Utah d.partm.nt of m.them.tics

We show that generalized.log canonical threshold. for com.lex analytic spaces satisfy the ACC(ascend.ng chain cond.tion) and.we characterize the accum.lation points.

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Num.rical m.d.ling of m.ss Transfer in the Interaction between River Biofilm.and.a Turbulent Bound.ry Layer

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Open Journal of Fluid.d.nam.cs 2024年第1期14卷 1-23页

作者： Falilou Cound.ul Evrad.m. d. Ngom.Fréd.ric Y. m.ulin Institut Polytechnique d. Saint-Louis Université Gaston Berger Saint-Louis Senegal Institut d. m.canique d.s Fluid.s d. Toulouse UMR 5502-Université de Toulouse Occitanie France

In this article d.d.cated.to the m.d.ling of vertical m.ss transfers between the biofilm.and.the bulk flow, we have, in the first instance, presented.the m.thod.logy used. followed.by the presentation of various results obtained.through analyses cond.cted.on velocity field., d.fferent fluxes, and.overall transfer coefficients. d.e to num.rical constraints (resolution of relevant spatial scales), we have restricted.the analysis to low Schm.d. num.ers (Sc=0.1, Sc=1, and.Sc=10) and.a single roughness Reynold. num.er (Re*=150). The analysis of instantaneous concentration field. from.various sim.lations revealed.logarithm.c concentration profiles above the canopy. In this zone, the concentration is relatively hom.geneous for longer tim.s. The analysis of results also showed.that the contribution of m.lecular d.ffusion to the total flux d.pend. on the Schm.d. num.er. This contribution is negligible for Schm.d. num.ers Sc≥0.1, but nearly balances the turbulent flux for Sc=0.1. In the canopy, the local Sherwood.num.er, given by the ratio of the total flux (within or above the canopy) to the m.lecular d.ffusion flux at the wall, also d.pend. on the Schm.d. num.er and.varies significantly between the canopy and.the region above. The exchange velocity, a purely hyd.od.nam.c param.ter, is ind.pend.nt of the Schm.d. num.er and.is on the ord.r of 10% of in the present case. This stud. also reveals that nutrient absorption by organism. near the wall d.pend. on the Schm.d. num.er. Such absorption is facilitated.by lower Schm.d. num.ers.

关键词： Epilithic Biofilm Passive Scalar Transport d.rect Num.rical Sim.lation Navier-Stokes

Asbestos Exposure d.ring Gasket Rem.val from.Aircraft Engine

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Occupational d.seases and.Environm.ntal m.d.cine 2024年第2期12卷 59-67页

作者： Charles L. Blake Kevin m. Guth Raym.nd.d. Harbison Apex Com.anies Marietta USA Center for Environm.ntal and.Occupational Risk Analysis and.m.nagem.nt College of Public Health University of South Florida Tampa USA

We have previously evaluated.asbestos exposure associated.with various m.intenance proced.res on light aircraft. The purpose of this stud. was to evaluate asbestos exposure d.ring engine m.intenance on light aircraft. This test was d.signed.to evaluate the potential for asbestos exposure to m.chanics and.others who rem.ve asbestos-containing engine gaskets from.reciprocating style aircraft engines. Utilized.in this test was an air cooled. horizontally opposed. aviation gasoline burning engine, assem.led.d.ring 1986 and.operated.interm.ttently up into 2015, having accum.lated.1680 hours run tim.. Nearly 75% of the asbestos-containing gaskets installed.d.ring 1986 were still in place at the tim. of testing. Chrysotile asbestos contents of such gaskets ranged.from.55% to 60% by area, for those of sheet style and.5% by area, for the spiral wound.m.tal/asbestos style. d.spite the levels of effort required.to effect gasket rem.vals, the professional aircraft m.chanic was not exposed.to airborne asbestos fibers at the lower lim.ts of sam.ling and.analytical d.tection achieved.all of which were substantially less than the current Occupational Safety and.Health Ad.inistration Perm.ssible Exposure Lim.ts for asbestos. The results of this testing ind.cate an absence of gasket related.asbestos exposure risk to m.chanics who work with light aircraft engines, includ.ng those having asbestos-containing gaskets. These results are consistent with the find.ngs of m.yarek and.Van Ord.n who stud.ed.the asbestos exposure risk occasioned.d.ring overhaul of larger rad.al style reciprocating aircraft engines [1].

关键词： Asbestos Exposure Gaskets Aircraft Engine Friction m.terials

Com.arison of ERA5 turbulent fluxes at the air-sea interface with m.asurem.nts from.a wave-following platform

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Atm.spheric and.Oceanic Science Letters 2024年第3期 34-38页

作者： Sa?d.Benjed.ou d.nis Bourras christopher Luneau Aix m.rseille Université National Center for Scientific ResearchMediterranean Institute of Oceanography Observatory of the Sciences of the Universe Pythéas Institute National Center for Scientific Research

Turbulent fluxes at the air-sea interface were estim.ted.with d.ta collected.in 2011-2020 with a low-profile platform.nam.d.OCARINA d.ring eight experim.nts in five regions:2011,2015,and.2016 in the Iroise Sea;2012 in the tropical Atlantic;2014 in the Chilie-Peru upwelling;2017 and.2018 in the m.d.terranean Sea,and.2018 and.2020 in *** observations were carried.out with m.d.rate wind.(2-10 m.s-1) and.average wave heights of 1.5 *** this stud.,the authors used.the fluxes calculated.by the bulk m.thod.using OCARINA-sam.led.d.ta as the *** d.ta can valid.te the fluxes estim.ted.from.ERAS reanalysis *** OCARINA and.ERA5 d.ta were taken *** d. this,the authors established.an algorithm.to extract the OCARINA d.ta as closely as possible to the reanalysis d.ta in tim. and.*** m.asurem.nts of the OCARINA platform.can conclud. on the relevance of the wid.ly used.reanalysis d.ta.

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Photosynthetic response to a winter heatwave in lead.ng and.trailing ed.e populations of the intertid.l red.alga Corallina offi-cinalis(Rhod.phyta)

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Acta Oceanologica Sinica 2024年第7期43卷 70-77页

作者： Regina Kolzenburg Fed.rica Ragazzola Laura Tam.urello Katy R.Nicastro christopher d.m.Quaid.Gerard. I.Zard. Um.åm.rine Sciences Centre UmeåUniversity90571 NorrbynSweden University of Portsm.uth Institute of Marine SciencePortsmouth PO49LYUK Stazione Zoologica Anton d.hrn Genova Marine CenterGenova 16126Italy Stazione Zoologica Anton d.hrn Sicily Marine CenterPalermo 90149Italy d.partm.nt of Zoology and.Entom.logy Rhodes UniversityMakhanda(Grahamstown)6139South Africa Centre of m.rine Sciences University of AlgarveFaro 8005-139Portugal Laboratoire d.Océanologie et d. Géosciences Universitéde LilleLille 59000France Universitéd. Caen Norm.nd.e Laboratoire de Biologie des Organismes et des Ecosystèmes AquatiquesCaen 14032France

m.rine heatwaves(m.Ws)caused.by anthropogenic clim.te change are becom.ng a key d.iver of change at the ecosystem.*** cond.tions experienced.by m.rine organism. across their d.stribution,particularly toward. the equator,are likely to approach their physiological lim.ts,resulting in extensive m.rtality and.subsequent changes at the population *** at the m.rgins of their species’d.stribution are thought to be m.re sensitive to clim.te-ind.ced.environm.ntal pressures than central populations,but our und.rstand.ng of variability in fitness-related.physiological traits in trailing versus lead.ng-ed.e populations is *** a laboratory sim.lation stud.,we tested.whether two lead.ng(Iceland.and.two trailing(Spain)peripheral populations of the intertid.l m.croalga Corallina officinalis d.splay d.fferent levels of m.xim.m.potential quantum.efficiency(Fv/Fm.resilience to current and.future winter m.Ws *** stud. revealed.that ongoing and.future local winter m.Ws will not negatively affect lead.ng-ed.e populations of ***,which exhibited.stable photosynthetic efficiency throughout the *** ed.e populations showed.a positive though non-significant trend.in photosynthetic efficiency throughout winter m.Ws *** and.equatorward.populations d.d.not prod.ce significantly d.fferent results,with winter m.Ws having no negative affect on Fv/Fm.of either ***,we found.no long-term.regional or population-level influence of a winter m.Ws on this species’photosynthetic ***,we found.no statistically significant d.fference in therm.l stress responses between lead.ng and.trailing ***,*** showed.a trend.toward. higher stress responses in southern than northern *** responses rest on a variety of local population traits,they are d.fficult to pred.ct based.solely on therm.l pressures.

关键词： m.rginal population coralline algae clim.te change ecophysiology photophysiology m.croalgae Fv/Fm

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Viscoelastic potential flow instability theory of Rivlin-Ericksen electrified.fluid. of cylind.ical interface

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Journal of Ocean Engineering and.Science 2024年第4期9卷 311-316页

作者： d.m.m.stafa d.partm.nt of m.them.tics College of ScienceQassim UniversityPO Box 6644Buraidah 51452Saudi Arabia d.partm.nt of m.them.tics Faculty of EducationAin Shams UniversityRoxyCairoEgypt

A linear electrohyd.od.nam.c Kelvin-Helm.oltz instability of the interface between two viscoelastic Rivlin-Ericksen fluid. enclosed.by two concentric horizontal cylind.rs has been stud.ed.via the viscoelastic potential flow *** d.spersion equation of com.lex coefficients for asym.etric d.sturbance has been obtained.by using norm.l m.d. *** stability criteria are analyzed.theoretically and.illustrated.*** im.ginary part of growth rate is plotted.versus the wave *** influences of d.nam.c viscoelastic,uniform.velocities,Reynold. num.er,electric field.d.nam.c viscosity,d.nsity fluid. ratio,d.electric constant ratio and.inner fluid.fraction on the stability of the system.are *** stud. find. its significance in Ocean pipelines to transfer oil or gas such as Eastern Siberia-Pacific Ocean oil pipeline.

关键词： Rivlin-Ericksen fluid Cylind.ical flow Viscoelastic potential flow Electrohyd.od.nam.cs stability