Search results for "Positive"

showing 10 items of 1875 documents

Do ventilatory parameters influence outcome in patients with severe acute respiratory infection? Secondary analysis of an international, multicentre1…

2021

Purpose: To investigate the possible association between ventilatory settings on the first day of invasive mechanical ventilation (IMV) and mortality in patients admitted to the intensive care unit (ICU) with severe acute respiratory infection (SARI). Materials and methods: In this pre-planned sub-study of a prospective, multicentre observational study, 441 patients with SARI who received controlled IMV during the ICU stay were included in the analysis. Results: ICU and hospital mortality rates were 23.1 and 28.1%, respectively. In multivariable analysis, tidal volume and respiratory rate on the first day of IMV were not associated with an increased risk of death; however, higher driving pr…

ARDSSoins intensifs réanimationmedicine.medical_treatmentAirway pressuresPEEP positive end-expiratory pressureCritical Care and Intensive Care Medicinelaw.inventionHypoxemiaCohort StudiesPositive-Pressure RespirationMechanical ventilationSARI severe acute respiratory infectionlawHospital MortalityProspective StudiesIQR interquartile rangesProspective cohort studyRCT randomized controlled trialTidal volumeSOFA Sequential Organ Failure AssessmentSAPS Simplified Acute Physiology ScoreIntensive care unitVCV volume-controlled ventilationHIV human immunodeficiency virusIntensive Care UnitsIC GLOSSARI Intensive Care Global Study on Severe Acute Respiratory Infectionmedicine.symptomCohort studyLOS length of staymedicine.medical_specialtyVt tidal volumeCOPD Chronic obstructive pulmonary diseaseNYHA New York Heart Association.PCV pressure-controlled ventilationArticleInternal medicineICU Intensive Care UnitSIMV Synchronized intermittent mandatory ventilationmedicineTidal VolumeHumansDP driving pressurePEEPARDS acute respiratory distress syndromeMechanical ventilationbusiness.industryOdds ratioPneumoniaPlateau pressuremedicine.diseaseRespiration ArtificialVILI ventilator induced lung injuryCI confidence intervalOR odds ratioIMV invasive mechanical ventilationCPAP continuous positive airway pressureARDSbusinessSD standard deviationECMO extracorporeal membrane oxygenationPBW predicted body weightPplat plateau pressure
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Mechanical ventilation parameters in critically ill COVID-19 patients: a scoping review

2021

Abstract Background The mortality of critically ill patients with COVID-19 is high, particularly among those receiving mechanical ventilation (MV). Despite the high number of patients treated worldwide, data on respiratory mechanics are currently scarce and the optimal setting of MV remains to be defined. This scoping review aims to provide an overview of available data about respiratory mechanics, gas exchange and MV settings in patients admitted to intensive care units (ICUs) for COVID-19-associated acute respiratory failure, and to identify knowledge gaps. Main text PubMed, EMBASE, and MEDLINE databases were searched from inception to October 30, 2020 for studies providing at least one v…

ARDSmedicine.medical_specialtyCritical Illnessmedicine.medical_treatmentReviewRespiratory physiologyCritical Care and Intensive Care MedicineHypoxemia03 medical and health sciencesMechanical ventilation0302 clinical medicineIntensive careFraction of inspired oxygenmedicineHumansIntensive care unitMechanical ventilation.Positive end-expiratory pressureMechanical ventilationRespiratory Distress SyndromeIntensive care unitsCoronavirus disease 2019Acute respiratory distress syndromebusiness.industrylcsh:Medical emergencies. Critical care. Intensive care. First aidCOVID-19030208 emergency & critical care medicinelcsh:RC86-88.9medicine.diseaseRespiration Artificial030228 respiratory systemEmergency medicineRespiratory Mechanicsmedicine.symptombusinessCohort studyCritical Care
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Safety and immunomodulatory effects of three probiotic strains isolated from the feces of breast-fed infants in healthy adults: SETOPROB study.

2013

We previously described the isolation and characterization of three probiotic strains from the feces of exclusively breast-fed newborn infants: Lactobacillus paracasei CNCM I-4034, Bifidobacterium breve CNCM I-4035 and Lactobacillus rhamnosus CNCM I-4036. These strains were shown to adhere to intestinal mucus in vitro, to be sensitive to antibiotics and to resist biliary salts and low pH. In the present study, a multicenter, randomized, double-blind, placebo-controlled trial with 100 healthy volunteers in three Spanish cities was carried out to evaluate the tolerance, safety, gut colonization and immunomodulatory effects of these three probiotics. Volunteers underwent a 15-day washout perio…

ARN Bacterianoved/biology.organism_classification_rank.speciesPhysiologylcsh:Medicine:Phenomena and Processes::Biological Phenomena::Ecological and Environmental Phenomena::Environment::Ecosystem::Biodiversity::Biota::Microbiota [Medical Subject Headings]law.inventionFecesProbioticAntibioticslawLactobacillus:Phenomena and Processes::Physiological Phenomena::Nutritional Physiological Phenomena::Child Nutritional Physiological Phenomena::Infant Nutritional Physiological Phenomena::Breast Feeding [Medical Subject Headings]lcsh:Science:Chemicals and Drugs::Nucleic Acids Nucleotides and Nucleosides::Nucleic Acids::RNA::RNA Bacterial [Medical Subject Headings]BifidobacteriumMultidisciplinaryBifidobacterium brevebiologyLacticaseibacillus rhamnosusMicrobiotaHibridación in SituInterleukin-10:Organisms::Bacteria::Gram-Positive Bacteria::Lactobacillales::Lactobacillaceae::Lactobacillus [Medical Subject Headings]Breast FeedingBloodCytokinesFemaleResearch ArticleAdult:Anatomy::Fluids and Secretions::Feces [Medical Subject Headings]Lactobacillus paracasei:Organisms::Bacteria::Endospore-Forming Bacteria::Gram-Positive Endospore-Forming Bacteria::Gram-Positive Endospore-Forming Rods::Clostridium::Clostridium difficile [Medical Subject Headings]Microbiology:Chemicals and Drugs::Nucleic Acids Nucleotides and Nucleosides::Nucleic Acids::Nucleic Acid Probes::Oligonucleotide Probes [Medical Subject Headings]Double-Blind MethodLactobacillus rhamnosusHumansImmunologic Factors:Analytical Diagnostic and Therapeutic Techniques and Equipment::Diagnosis::Diagnostic Techniques and Procedures::Clinical Laboratory Techniques::Cytological Techniques::Histocytological Preparation Techniques::Staining and Labeling::In Situ Hybridization [Medical Subject Headings]FecesSafety studiesved/biologyProbioticslcsh:RClostridium difficile:Organisms::Bacteria::Gram-Positive Bacteria::Actinobacteria::Bifidobacterium [Medical Subject Headings]biology.organism_classificationImmunoglobulin ALactobacilluslcsh:QInterleukin-4BifidobacteriumBreast feedingSondas de OligonucleótidosPLoS ONE
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Inducible ASABF-Type Antimicrobial Peptide from the Sponge Suberites domuncula: Microbicidal and Hemolytic Activity in Vitro and Toxic Effect on Moll…

2011

Since sponges, as typical filter-feeders, are exposed to a high load of attacking prokaryotic and eukaryotic organisms, they are armed with a wide arsenal of antimicrobial/cytostatic low-molecular-weight, non-proteinaceous bioactive compounds. Here we present the first sponge agent belonging to the group of ASABF-type antimicrobial peptides. The ASABF gene was identified and cloned from the demospongeSuberites domuncula. The mature peptide, with a length of 64 aa residues has a predicted pI of 9.24, and comprises the characteristic CSαβ structural motif. Consequently, the S. domuncula ASABF shares high similarity with the nematode ASABFs ; it is distantly related to the defensins. The recom…

ASABFAntimicrobial peptidesGastropodaMolecular Sequence DataPharmaceutical SciencePeptideMicrobial Sensitivity TestsGram-Positive BacteriaReal-Time Polymerase Chain ReactionArticleMicrobiology03 medical and health sciencesantimicrobial peptidesAnti-Infective AgentsSequence Analysis ProteinDrug DiscoveryAnimalsBittium sp.Structural motiflcsh:QH301-705.5Pharmacology Toxicology and Pharmaceutics (miscellaneous)spongesPhylogeny030304 developmental biologychemistry.chemical_classification0303 health sciencesbiology030306 microbiologyEffectorHemolytic AgentsapoptosisGeologyBittium spsponges; <em>Suberites domuncula</em>; ASABF; antimicrobial peptides; apoptosis; <em>Bittium</em> sp.biology.organism_classificationSuberites domunculasponges ; Suberites domuncula ; ASABF ; antimicrobial peptides ; apoptosis ; Bittium sp.Recombinant ProteinsSuberites domunculaSpongeEnzymelcsh:Biology (General)chemistryMolluscaSuberitesSuberitesAntimicrobial Cationic PeptidesMarine Drugs
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Acid sensitivity of neomycin-resistant mutants ofOenococcus oeni: a relationship between reduction of ATPase activity and lack of malolactic activity

1999

Mutants of Oenococcus oeni were isolated as spontaneous neomycin-resistant mutants. Three of these mutants harbored a significantly reduced ATPase activity that represented 50% of that of the wild-type strain. Their growth rates were also impaired at pH 5.3 (46-86% of the wild-type level). However, the profiles of sugar consumption appeared identical to those of the parental strain. At pH 3.2, all the mutant strains failed to grow and a drastic decrease in viability was observed after an acid shock. Surprisingly, all the isolated mutants were devoid of malolactic activity. These results suggest that the ATPase and malolactic activities of O. oeni are linked to each other and play a crucial …

ATPaseMutantMalatesMicrobiologyMicrobiologyGeneticsmedicineMalolactic fermentationLactic AcidMolecular BiologyHeat-Shock ProteinsOenococcus oeniAdenosine Triphosphataseschemistry.chemical_classificationbiologyStrain (chemistry)Drug Resistance MicrobialNeomycinNeomycinHydrogen-Ion Concentrationbiology.organism_classificationAnti-Bacterial AgentsGram-Positive CocciEnzymeBiochemistrychemistrybiology.proteinHeat-Shock ResponseLeuconostocBacteriamedicine.drugFEMS Microbiology Letters
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Lawrence Kelso Frank's Proto Ayresian Dichotomy: A Note

2003

This paper explores Lawrence Kelso Frank's contribution to the evolution of the so called Veblenian dichotomy. According to this apprach, peculiar to the institutional framework of every economic system is an absolute and irreconcilable tension between the dynamic and progressive force of technology on the one side, and the static and conservative structure of ceremony and institutions on the other. The first section examines Frank's adoption of behavioristic psychology in connection with the main changes which were taking place in the American social sciences during the first decades of the twentieth century. The second section describes Frank's theory of institutional change, emphasizing …

Absolute (philosophy)Section (archaeology)John deweyVeblen goodInstitutional changemedia_common.quotation_subjectInstitutionalismVeblenian dichotomySociologyPositive economicsSocial scienceCeremonymedia_commonSSRN Electronic Journal
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2015

This paper provides a commentary on the academic literature on accounting conservatism with a view to highlighting the insights of that literature that are potentially useful for accounting standar...

Accounting conservatismmedicine.medical_specialtyActuarial sciencebusiness.industryAccountingConstraints accountingEconomicsmedicineAccountingbusinessGeneralLiterature_REFERENCE(e.g.dictionariesencyclopediasglossaries)FinancePositive accountingAccounting and Business Research
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Drug resistance patterns of bacteria isolated from patients with nosocomial pneumonia at Tehran hospitals during 2009-2011

2013

Introduction: Nosocomial pneumonia remains an important cause of mortality and morbidity worldwide. Surveillance programs play an important role in the identification of common etiologic agents and local patterns of antimicrobial resistance. Methodology: In this study we determined the frequency and antimicrobial susceptibility of pathogens isolated from patients with nosocomial pneumonia during 2009 to 2011. Results: A total of 642 bacteria were isolated from 516 suspected samples. Acinetobacter baumannii (21.1%, n = 136), was the commonest isolated pathogen followed by Pseudomonas aeruginosa (17.4%, n = 112) , Staphylococcus aureus (15.8%, n = 102) and enterococci (8.4% n = 54). The most …

Acinetobacter baumanniiSettore MED/07 - Microbiologia E Microbiologia ClinicaPenicillanic AcidDrug resistanceIranmedicine.disease_causechemistry.chemical_compoundLevofloxacinDrug Resistance Multiple BacterialPrevalenceRespiratory Tract InfectionsPolymyxin BCross InfectionbiologyCeftriaxoneGeneral MedicineHospitalsAcinetobacter baumanniiAnti-Bacterial AgentsInfectious DiseasesPiperacillin Tazobactam Drug CombinationPseudomonas aeruginosaCeftriaxonemedicine.drugMethicillin-Resistant Staphylococcus aureusStaphylococcus aureusMicrobial Sensitivity TestsMicrobiologyTazobactamMicrobiologyAntibiotic resistanceAcinetobacter baumanniiiVirologymedicinePneumonia BacterialHumansTehran hospitalsGram-Positive Bacterial InfectionsPiperacillindrug resistancebusiness.industryPseudomonas aeruginosanosocomial pneumoniaSputumbiochemical phenomena metabolism and nutritionbacterial infections and mycosesbiology.organism_classificationchemistrynosocomial pneumonia; drug resistance; Acinetobacter baumanniii; Pseudomonas aeruginosa; Tehran hospitalsLinezolidParasitologybusinessGram-Negative Bacterial Infections
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A SYMMETRIC AND POSITIVE DEFINITE BEM FOR 2-D FORCED VIBRATIONS

1997

A BEM formulation for 2D elastodynamics in the time domain has been presented. The formulation gives a resolving system that involves boundary displacements only. The stiffness and mass matrices of the boundary discretized body are frequency independent, symmetric and positive definite

Acoustics and UltrasonicsDiscretizationMechanical EngineeringMathematical analysisStiffnessBoundary (topology)Positive-definite matrixCondensed Matter PhysicsVibrationComputer Science::Computational Engineering Finance and ScienceMechanics of MaterialsmedicineTime domainmedicine.symptomBoundary element methodMathematicsJournal of Sound and Vibration
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A Hierarchical Detection and Response System to Enhance Security Against Lethal Cyber-Attacks in UAV Networks

2018

International audience; Unmanned aerial vehicles (UAVs) networks have not yet received considerable research attention. Specifically, security issues are a major concern because such networks, which carry vital information, are prone to various attacks. In this paper, we design and implement a novel intrusion detection and response scheme, which operates at the UAV and ground station levels, to detect malicious anomalies that threaten the network. In this scheme, a set of detection and response techniques are proposed to monitor the UAV behaviors and categorize them into the appropriate list (normal, abnormal, suspect, and malicious) according to the detected cyber-attack. We focus on the m…

Ad hoc networksMonitoringAnomaly-based intrusion detection systemWireless ad hoc networkComputer science[ INFO.INFO-NI ] Computer Science [cs]/Networking and Internet Architecture [cs.NI]UAVMobile computing[ INFO.INFO-CR ] Computer Science [cs]/Cryptography and Security [cs.CR]JammingComputerApplications_COMPUTERSINOTHERSYSTEMS02 engineering and technologyIntrusion detection systemAnomaly detection and rules-based intrusion detection techniquesIDSBlack hole (networking)Computer securitycomputer.software_genreMobile communicationUnmanned aerial vehicles[INFO.INFO-CR]Computer Science [cs]/Cryptography and Security [cs.CR][INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI]0202 electrical engineering electronic engineering information engineeringFalse positive paradoxOverhead (computing)Intrusion detectionElectrical and Electronic Engineering020206 networking & telecommunicationsComputer Science ApplicationsHuman-Computer InteractionControl and Systems Engineeringintrusion detection system020201 artificial intelligence & image processingcyber-attacksIntrusion prevention systemcomputerSoftware
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