Search results for " tension"

showing 10 items of 270 documents

Anomalous and Not-So-Common Behavior in Common Ionic Liquids and Ionic Liquid-Containing Systems

2019

This work highlights unexpected, not so well known responses of ionic liquids and ionic liquid-containing systems, which are reported in a collective manner, as a short review. Examples include: (i) Minima in the temperature dependence of the isobaric thermal expansion coefficient of some ILs; (ii) Viscosity Minima in binary mixtures of IL + Molecular solvents; (iii) Anomalies in the surface tension within a family of ILs; (iv) The constancy among IL substitution of Cp/Vm at and around room temperature; (v) ILs as glass forming liquids; (vi) Alternate odd-even side alkyl chain length effects; (vii) Absolute negative pressures in ILs and IL-containing systems; (viii) Reversed-charged ionic l…

Ionic bondingThermodynamicsReview02 engineering and technology010402 general chemistry01 natural sciencesLower critical solution temperatureodd-even effectsThermal expansionionic liquidslcsh:ChemistrySurface tensionchemistry.chemical_compoundViscosityLCSTsurface tensionAlkylchemistry.chemical_classificationreversed charge ILsunusual behaviorGeneral Chemistry021001 nanoscience & nanotechnology0104 chemical sciencesChemistrylcsh:QD1-999chemistrythermal expansion coefficientviscosityIonic liquidIsobaric process0210 nano-technologyFrontiers in Chemistry
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Le tragedie del desiderio

2014

La mancanza originaria intenzionalità finita tensione in-finita disperazione dell'infinito disperazione del finito il senso dell'essere la dimensione dello spiritoSettore M-PED/01 - Pedagogia Generale E Sociale
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Microelectrode Measurements of Oxygen Tension Distributions in Multicellular Spheroids Cultured in Spinner Flasks

1984

Since multicellular spheroids were introduced into cancer research by Sutherland et al. (1970, 1971), they have been widely used for studying the susceptibility of cancer cells to various treatment modalities. Many of these investigations provided evidence for a major role of oxygen in controlling the metabolic and cell cycle state of the tumor cells, thus modifying the responsiveness of the cells to therapy. Several investigators have measured O2 tension (PO2) distributions in spheroids with O2-sensitive microelectrodes (Carlsson et al. 1979; Kaufman et al. 1981; Mueller-Klieser and Sutherland 1982a, b, 1983; Mueller-Klieser et al. 1983). The measurements produced PO2 values that varied co…

Laboratory flaskOxygen supplyMicroelectrodeChemistryCell cultureembryonic structuresCancer cellSpheroidBiophysicsMulticellular spheroidOxygen tension
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Pulmonary surfactant protein C containing lipid films at the air-water interface as a model for the surface of lung alveoli.

1995

The pulmonary surfactant lines as a complex monolayer of lipids and proteins the alveolar epithelial surface. The monolayer dynamically adapts the surface tension of this interface to the varying surface areas during inhalation and exhalation. Its presence in the alveoli is thus a prerequisite for a proper lung function. The lipid moiety represents about 90% of the surfactant and contains mainly dipalmitoylphosphatidylcholine (DPPC) and phosphatidylglycerol (PG). The surfactant proteins involved in the surface tension adaption are called SP-A, SP-B and SP-C. The aim of the present investigation is to analyse the properties of monolayer films made from pure SP-C and from mixtures of DPPC, DP…

LangmuirChemical PhenomenaSurface PropertiesProteolipidsLipid BilayersMolecular Sequence DataBiophysicsPalmitic AcidsBiophysical PhenomenaSurface tensionchemistry.chemical_compoundPulmonary surfactantEllipsometryMonolayerHumansPulmonary surfactant-associated protein CAmino Acid SequenceMolecular BiologyPhospholipidsPhosphatidylglycerolChemistryChemistry PhysicalAirtechnology industry and agricultureWaterMembranes ArtificialPulmonary SurfactantsCell BiologyLipid MetabolismLipidsPulmonary AlveoliCrystallographyChemical engineeringDipalmitoylphosphatidylcholinelipids (amino acids peptides and proteins)Protein BindingMolecular membrane biology
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Molecular adhesion interactions between Langmuir monolayers and solid substrates

1998

Abstract Substrate-monolayer adhesion interactions between differently prepared SiO2 surfaces and Langmuir monolayers were investigated. From the relation between the contact angle and the surface tension of a Langmuir monolayer in the configuration of Langmuir wetting the work of adhesion between the substrate and the monolayer as a function of the molecular packing and the transfer ratios was determined. Thus the molecular work of adhesion of different SiO2-dimyristoylphosphatidylethanolamine surfaces was quantified. The relation between the local adhesion interactions and the molecular packing and structure is presented and substrate-induced phase transitions are discussed.

LangmuirChemistrytechnology industry and agricultureDispersive adhesionAdhesionLangmuir–Blodgett filmContact angleSurface tensionColloid and Surface ChemistryChemical engineeringMonolayerOrganic chemistrylipids (amino acids peptides and proteins)WettingColloids and Surfaces A: Physicochemical and Engineering Aspects
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Geo-economic variations in epidemiology, patterns of care, and outcomes in patients with acute respiratory distress syndrome: insights from the LUNG …

2017

Background Little information is available about the geo-economic variations in demographics, management, and outcomes of patients with acute respiratory distress syndrome (ARDS). We aimed to characterise the effect of these geo-economic variations in patients enrolled in the Large Observational Study to Understand the Global Impact of Severe Acute Respiratory Failure (LUNG SAFE). Methods LUNG SAFE was done during 4 consecutive weeks in winter, 2014, in a convenience sample of 459 intensive-care units in 50 countries across six continents. Inclusion criteria were admission to a participating intensive-care unit (including transfers) within the enrolment window and receipt of invasive or non…

MaleARDSdemographyeconomicmedicine.medical_treatmentTerapéuticaair conditioningComorbidityintensive care unitdeveloped country0302 clinical medicineneuromuscular blockingmiddle agedacute myocardial-infarctionmiddle income countryProspective StudiesGeography Medicalcritically-ill patientsadultagedpriority journalrisk factorIncomegeographic-variationDeveloped countryhospitalizationprospective studyHumanPulmonary and Respiratory MedicineDeveloped Countriemedicine.medical_specialtyDeveloping countryArticle/dk/atira/pure/subjectarea/asjc/2700/274003 medical and health sciencesSíndrome respiratorio agudo graveunitsMedicalHumansIntensive care medicineDeveloping CountriesAgedhigh income countryRespiratory Distress Syndrome Adultnoninvasive ventilationAparato respiratoriomedicine.diseasemortalitymajor clinical studyProspective Studiearterial oxygen tension030228 respiratory systemARDSObservational studySociologíahealth care deliverygeographyintensive-careRisk FactorsEpidemiologyProspective cohort studyRespiratory Distress Syndromepartial pressureartificial ventilationSociología médicaMiddle Agedadult respiratory distress syndromeAged; Comorbidity; Delivery of Health Care; Developed Countries; Developing Countries; Europe; Female; Geography Medical; Humans; Income; Intensive Care Units; Male; Middle Aged; Patient Outcome Assessment; Prospective Studies; Respiratory Distress Syndrome Adult; Risk Factors; Pulmonary and Respiratory MedicineEuropeIntensive Care UnitsfemaleincomeFemaleEnfermedadinjurycohort analysigross national incomesurvivalNOmedical geographyDeveloping Countrielength of staymedicinecontrolled studyoutcome assessmentbreast-cancerMechanical ventilationdiseasebusiness.industryDeveloped Countriespatient caredeveloping country030208 emergency & critical care medicinestatistics and numerical data AgedComorbiditywinterACUTE MYOCARDIAL-INFARCTION; CRITICALLY-ILL PATIENTS; GEOGRAPHIC-VARIATION; INTENSIVE-CARE; BREAST-CANCER; MORTALITY; DISEASE; INJURY; UNITS; HOSPITALIZATIONPatient Outcome AssessmentEmergency medicineprone positiontreatment outcomebusinessDelivery of Health Care
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Noninvasive Ventilation of Patients with Acute Respiratory Distress Syndrome: Insights from the LUNG SAFE Study

2016

Rationale: Noninvasive ventilation (NIV) is increasingly used in patients with acute respiratory distress syndrome (ARDS). The evidence supporting NIV use in patients with ARDS remains relatively sparse.Objectives: To determine whether, during NIV, the categorization of ARDS severity based on the PaO2/FiO2 Berlin criteria is useful.Methods: The LUNG SAFE (Large Observational Study to Understand the Global Impact of Severe Acute Respiratory Failure) study described the management of patients with ARDS. This substudy examines the current practice of NIV use in ARDS, the utility of the PaO2/FiO2 ratio in classifying patients receiving NIV, and the impact of NIV on outcome.Measurements and Main…

MaleARDSprocedureblood oxygen tensionCritical Care and Intensive Care MedicineSeverity of Illness Indexlaw.invention0302 clinical medicinelawHospital MortalityRespiratory Distress SyndromeAcute respiratory distress syndromeadult respiratory distress syndromeMiddle AgedIntensive care unitIntensive Care Unitsmedicine.anatomical_structureTreatment Outcomepriority journalpositive end expiratory pressureNoninvasive ventilationdisease severityFemaletreatment outcome AgedNoninvasive ventilationprospective studyHumanAdultPulmonary and Respiratory Medicinemedicine.medical_specialtycohort analysiIntensive Care Unitdisease classificationAcute respiratory distressArticleNO03 medical and health sciencesacute respiratory distress syndrome; noninvasive ventilationlength of staySeverity of illnessSettore MED/41 - ANESTESIOLOGIAmedicineSequential Organ Failure Assessment ScoreHumansIn patientAcute respiratory distress syndrome; Noninvasive ventilation; Aged; Female; Hospital Mortality; Humans; Intensive Care Units; Male; Middle Aged; Respiratory Distress Syndrome Adult; Severity of Illness Index; Treatment Outcome; Noninvasive Ventilation; Pulmonary and Respiratory Medicine; Critical Care and Intensive Care MedicineIntensive care medicineoutcome assessmentAgedLungbusiness.industryRespiratory Distress Syndrome Adult030208 emergency & critical care medicinemedicine.diseasemajor clinical studymortalityrespiratory tract diseasesbreathing ratemulticenter study030228 respiratory systemincidenceObservational studyobservational studybusinessAcute respiratory distress syndrome; Noninvasive ventilation;
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Survey on treatments for primary headaches in 13 specialized juvenile Headache Centers: The first multicenter Italian study

2017

Abstract Aim The purpose of this retrospective multicenter study was to evaluate the use and the self-perceived efficacy and tolerability of pharmacological and non-pharmacological treatments in children and adolescents with primary headaches. Methods Study of a cohort of children and adolescents diagnosed with primary headache, consecutively referred to 13 juvenile Italian Headache Centers. An ad hoc questionnaire was used for clinical data collection. Results Among 706 patients with primary headaches included in the study, 637 cases with a single type of headache (migraine 76% – with and without aura in 10% and 67% respectively; tension-type headache 24%) were selected (mean age at clinic…

MalePediatricsmedicine.medical_specialtyAdolescentMigraine DisordersAdolescents; Children; Migraine; Primary headaches; Tension-type headache; Treatment; Pediatrics Perinatology and Child Health; Neurology (clinical)Tension-typeTriptansPizotifenPediatrics03 medical and health sciences0302 clinical medicinechildrenPrimary headacheBehavior TherapySurveys and QuestionnairesmedicineAcupunctureHumansAmitriptylinemigraine030212 general & internal medicineadolescentsPractice Patterns Physicians'ChildFlunarizineRetrospective Studiestreatmentbusiness.industryAnti-Inflammatory Agents Non-SteroidalGeneral Medicineadolescents; children; migraine; primary headaches; tension-type headache; treatmentPerinatology and Child Healthmedicine.diseasetension-type headacheMigraineTolerabilityItalyPediatrics Perinatology and Child HealthCohortAnticonvulsantsFemaleprimary headachesNeurology (clinical)businessheadache030217 neurology & neurosurgeryPrimary headaches; Migraine; Tension-type; headache; Treatment; Children; Adolescentsmedicine.drug
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Remodeling of alveolar septa after murine pneumonectomy

2015

In most mammals, removing one lung (pneumonectomy) results in the compensatory growth of the remaining lung. In mice, stereological observations have demonstrated an increase in the number of mature alveoli; however, anatomic evidence of the early phases of alveolar growth has remained elusive. To identify changes in the lung microstructure associated with neoalveolarization, we used tissue histology, electron microscopy, and synchrotron imaging to examine the configuration of the alveolar duct after murine pneumonectomy. Systematic histological examination of the cardiac lobe demonstrated no change in the relative frequency of dihedral angle components (Ends, Bends, and Junctions) ( P &gt…

MalePulmonary and Respiratory MedicinePathologymedicine.medical_specialtyPhysiologymedicine.medical_treatmentCompensatory growth (organ)Neovascularization PhysiologicMicePneumonectomyPhysiology (medical)AnimalsSurface TensionMedicinePneumonectomyLungbusiness.industryRegeneration (biology)ArticlesCell BiologyAnatomyrespiratory systemMice Inbred C57BLPulmonary Alveolimedicine.anatomical_structureMicroscopy Electron ScanningTomography X-Ray ComputedbusinessSynchrotronsAmerican Journal of Physiology-Lung Cellular and Molecular Physiology
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Analysis of Autoantibody Repertoires in Sera of Patients with Glaucoma

2003

PURPOSE Glaucoma is the second cause of blindness worldwide. It is usually considered a neurodegenerative disease. There is evidence that an autoimmune mechanism is involved in the development of glaucoma in some patients. The aim of this study was to analyze the IgG autoantibody repertoires in sera of glaucoma patients and healthy subjects. METHODS A total of 82 patients were divided into four groups: healthy volunteers without any ocular disorders (CO, n = 30), patients with primary open-angle glaucoma (POAG, n = 19), ocular hypertension (OHT, n = 16), and normal tension glaucoma (NTG, n = 17). All groups were matched for age and gender. The sera of these patients were tested against West…

MaleRetinal Ganglion Cellsmedicine.medical_specialtygenetic structuresEye diseaseBlotting WesternOcular hypertensionGlaucomaAutoantigens03 medical and health scienceschemistry.chemical_compound0302 clinical medicineAntigenOphthalmologyNormal tension glaucomamedicineHumansIntraocular PressureAgedAutoantibodiesbiologybusiness.industryAutoantibodyRetinalGeneral MedicineMiddle Agedmedicine.diseaseeye diseasesOphthalmologychemistryCase-Control StudiesImmunoglobulin GMultivariate AnalysisImmunology030221 ophthalmology & optometrybiology.proteinFemaleOcular Hypertensionsense organsAntibodybusinessGlaucoma Open-Angle030217 neurology & neurosurgeryEuropean Journal of Ophthalmology
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