Search results for " Digital Image Analysis"

showing 4 items of 4 documents

Comparison of Histochemical Stainings in Evaluation of Liver Fibrosis and Correlation with Transient Elastography in Chronic Hepatitis.

2015

Background and Aim. The best staining to evaluate liver fibrosis in liver hepatitis is still a debated topic. This study aimed to compare Masson’s trichrome (MT), Sirius Red (SR), and orcein stainings in evaluating liver fibrosis in chronic HCV hepatitis (CHC) with semiquantitative and quantitative methods (Collagen Proportionate Area (CPA) by Digital Image Analysis (DIA)) and correlate them with transient elastography (TE).Methods. Liver stiffness evaluation of 111 consecutive patients with CHC was performed by TE. Semiquantitative staging by Metavir score system and CPA by DIA were assessed on liver biopsy stained with MT, SR, and orcein.Results. MT, SR, and orcein staining showed concord…

AdultLiver CirrhosisMaleCancer ResearchPathologymedicine.medical_specialtyArticle SubjectAdolescentliver fibrosis elastography Digital Image Analysis liver biopsySettore MED/08 - Anatomia PatologicaPathology and Forensic Medicinechemistry.chemical_compoundYoung AdultTrichromeFibrosisImage Processing Computer-AssistedMedicineHumansOrceinSirius RedRC254-282AgedHepatitis ChronicHepatitisSettore MED/12 - Gastroenterologiamedicine.diagnostic_testQH573-671Staining and Labelingbusiness.industryNeoplasms. Tumors. Oncology. Including cancer and carcinogensCell BiologyGeneral MedicineMiddle Agedmedicine.diseaseStainingchemistryLiver biopsyMolecular MedicineElasticity Imaging TechniquesFemalebusinessTransient elastographyCytologyResearch ArticleAnalytical cellular pathology (Amsterdam)
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ASSESMENT OF TEMPERATURE POLARIZATION IN MEMBRANE DISTILLATION CHANNELS BY LIQUID CRYSTAL THERMOGRAPHY

2014

AbstractThe measurement of local temperature distributions within a membrane distillation (MD) channel is a crucial step for the optimization of the channel and spacer geometry. This information allows the estimation of temperature polarization phenomena, which can dramatically influence the thermal efficiency of the process and the optimal choice of the geometric configuration (net spacer features, channel size, etc.). In the present work, a recently presented experimental technique, based on the use of thermochromic liquid crystals and digital image analysis, has been employed in order to assess the temperature polarization phenomena. The local heat transfer coefficient distribution on th…

Digital Image AnalysisThermal efficiencySettore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciMaterials scienceSettore ING-IND/25 - Impianti ChimiciAnalytical chemistryOcean EngineeringHeat transfer coefficientengineering.materialMembrane distillationLiquid crystalMembrane DistillationSettore ING-IND/19 - Impianti NucleariWater Science and TechnologyPressure dropThermochromic Liquid CrystalDiamondMechanicsHeat TransferPolarization (waves)PollutionMembrane Distillation; Thermochromic Liquid Crystals; Heat Transfer; Temperature Polarization; Digital Image AnalysisTemperature PolarizationHeat transferengineering
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A Thermochromic Liquid Crystals Image Analysis technique to investigate temperature polarization in spacer-filled channels for Membrane Distillation

2013

The analysis of flow fields and temperature distributions is of paramount importance in the development and optimization of new spacer-filled channel geometries for Membrane Distillation modules. The literature reports only few studies on the experimental characterization of such channels and, to the authors’ knowledge, none of them presents local information concerning the temperature distribution on the membrane surface. In the present work, a non-intrusive experimental technique named TLC-IA-TP is presented: it is based on the use of Thermochromic Liquid Crystals (TLCs) and digital Image Analysis (IA) and it is applied here for the first time to the analysis of Temperature Polarization (…

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciConvective heat transferbusiness.industryChemistrySettore ING-IND/25 - Impianti ChimiciMechanical engineeringFiltration and Separation02 engineering and technologyMechanicsComputational fluid dynamics021001 nanoscience & nanotechnologyMembrane distillationPolarization (waves)BiochemistryMembrane technologyMembrane020401 chemical engineeringLiquid crystalMembrane distillation Temperature polarization Thermochromic Liquid Crystals Digital Image Analysis Spacer filled channelGeneral Materials Science0204 chemical engineeringPhysical and Theoretical Chemistry0210 nano-technologybusinessCommunication channel
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Analysis of the bubbling behaviour of 2-D gas solid fluidized beds part II: Comparison between experiments and numerical simulations via Digital Imag…

2009

In the field of gas–solid fluidization, bubbles, and all features regarding them, have a very great importance, as they significantly affect the process performance. Numerous experimental studies on bubbles, and their formation, evolution, and properties, have been performed in the past. These investigations appear particularly difficult, due to the nature of these systems, since the gas phase is distributed in both the bubble and the emulsion phase. Several experimental approaches have been developed to tackle this study. Among these, the Digital Image Analysis Technique purposely developed in Part I of the present work, based on the use of a video camera for monitoring the phenomenon coup…

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciFluidization Computational fluid dynamics Digital Image Analysis TechniqueSettore ING-IND/25 - Impianti Chimici
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