Search results for "Pressure range"

showing 3 items of 23 documents

Über eine Beziehung zwischen Verdünnunasentropie und Verdünnungsenthalpie in Lösungen von Polystyrol und Polymethylmethacrylat

1973

Durch Lichtstreuungsmessungen wurde der Entropieanteil und der Enthalpieanteil des 2. osmotischen Virialkoeffizienten (A2) von athermischen und exothermischen Losungen von Polystyrol (PS) und Polymethylmethacrylat (PMMA) bei 25°C und Normaldruck bestimmt. Zur Auffindung von athermischen und exothermischen Losungsmitteln fur diese Polymeren wurde die Temperaturabhangigkeit des STAUDINGERindex verwendet. Die ermittelten thermodynamischen Grosen A2, A2,S und A2,H ergeben zusammen mit fruheren Messungen eine beziehung, die nahezu unabhangig vom speziellen System ist. The second osmotic virial coefficient A2 and its entropic and enthalpic parts of athermal and exothermal solutions of polystyrene…

chemistry.chemical_classificationYield (engineering)Materials sciencePolymers and PlasticsIntrinsic viscosityPhilosophyAnalytical chemistryPolymerLight scatteringPressure rangechemistry.chemical_compoundColloid and Surface ChemistrychemistryVirial coefficientPolymer chemistryMaterials ChemistryPolystyrenePhysical and Theoretical ChemistryHumanitiesColloid and Polymer Science
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The Impact of Venous Pressure on FFR: Do Diuretics Affect FFR?

2016

Central venous pressure influences FFR measurements because it decreases the perfusion gradient distal to the stenosis proportionally more than it does proximal to it. The impact of central venous pressure is minimal for normal pressure values and for FFR values away from the threshold. However, in conditions where FFR is close to 0.80 and central venous pressure is high, it might play an important role in reclassifying stenoses from not relevant to relevant.

medicine.medical_specialtyIncreased central venous pressureVenous pressurebusiness.industryCentral venous pressuremedicine.diseasePressure rangeStenosisHeart failureInternal medicinemedicineCardiologybusinessPerfusion
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Diagnosis, treatment, and analysis of long-term outcomes in idiopathic normal-pressure hydrocephalus

2007

To the Editor:We read with interest the article by McGirt et al. (9) entitled“Diagnosis, Treatment, and Analysis of Long-term Outcomes inIdiopathic Normal Pressure Hydrocephalus.” The authors con-clude that gait impairment is the primary symptom that inde-pendently predicted improvement after shunting. The studyincluded 132 patients, 129 (98%) of whom had gait impairmentas a feature. We would like to comment on this particular selec-tion criterion, as well as improvements in the Mini Mental StateExamination (MMSE) as the sole measure of postoperative cog-nitive improvement.One of the inclusion criteria for this study was presentationwith two or more features of the classic triad. Thus, the …

medicine.medical_specialtybusiness.industrymedicine.diseaseHydrocephalusShuntingPressure rangePhysical medicine and rehabilitationGait (human)Cerebrospinal fluidDiagnosis treatmentmedicineGait AtaxiaPhysical therapyDementiaSurgeryNeurology (clinical)business
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