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Multi-point temperature measurements in packed beds using phosphor thermometry and ray tracing simulations

Particuology 2024年第2期85卷 77-88页

作者： Guangtao Xuan Mirko Ebert simson julian rodrigues Nicole Vorhauer-Huget Christian Lessig Benoit Fond Institute of Fluid Dynamics and Thermodynamics OVGU MagdeburgUniversitaetsplatz 2Magdeburg39106Saxony-AnhaltGermany Institute of Simulations and Graphics OVGU MagdeburgUniversitaetsplatz 2Magdeburg39106Saxony-AnhaltGermany Institute of Process Engineering OVGU MagdeburgUniversitaetsplatz 2Magdeburg39106Saxony-AnhaltGermany ONERA The French Aerospace LabDepartment of AerodynamicsAeroelasticity and Aeroacoustics(DAAA)Paris-Saclay University8rue des VertugadinsMeudon92190France

Packed bed reactors are commonly found in the process industry,for example in flame-assisted calci-nation for cement *** the heat transfer inside the bed is essential for process control,product quality and energy *** we propose a technique to determine the internal temperature distribution of packed beds based on a combination of lifetime-based phosphor ther-mometry,ray tracing simulations,and assimilation of temperature data using finite element heat transfer *** establish and validate the technique,we considered a reproducible regular packing of 6 mm diameter aluminum spheres,with one of the spheres in the top layer being electrically *** a sphere inside the packing is coated with thermographic phosphors and excitation light is directed to-wards the packing,luminescence from the coated sphere exits the packed bed after multiple reflection and the sphere's temperature can be *** measurements showed that the temper-ature obtained by phosphor thermometry is independent of the luminescent sphere *** imaging the luminescence on a camera,the luminescence distribution in recorded image depended,however,on the position of the ***,in setups with multiple phosphor-coated spheres,their signals can be separated using a least squares *** demonstrate the approach using a setup with three luminescent spheres and validated the temperature readings against thermocouple *** obtain the spatial signatures for individual sphere positions required for the least squares fit,ray tracing simulations were *** provide an efficient alternative to single sphere measurements that are only practical for regular spherical packed ***-point measurements were used as input to a finite element heat transfer simulations to determine parameters such as particle-to-particle air gap *** these,the full temperature distribution inside the bed could be assimilated from the meas

关键词： Packed beds Phosphor thermometry Ray tracing Heat transfer simulation Data assimilation

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The effects of a supervised Pilates training program on balance in Parkinson’s disease

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Advances in Parkinson's Disease 2013年第2期2卷 58-61页

作者： Liam Johnson David Putrino Ian James julian rodrigues Rick Stell Gary Thickbroom Frank L. Mastaglia Australian Neuro-Muscular Research Institute Movement Disorders Clinic Queen Elizabeth II Medical Centre Centre for Neuro- muscular & Neurological Disorders University of Western Australia Crawley Australia Australian NeuroMuscular Research Institute Movement Disorders Clinic Queen Elizabeth II Medical Centre Centre for Neuromuscular & Neurological Disorders University of Western Australia Crawley Australia Australian Neuro-Muscular Research Institute Movement Disorders Clinic Queen Elizabeth II Medical Centre Centre for Neuromuscular & Neurological Disorders University of Western Australia Crawley Australia Australian NeuroMuscular Research Institute Movement Disorders Clinic Queen Elizabeth II Medical Centre Centre for Neuromuscular & Neurological Disorders University of Western Australia Crawley Australia School of Psychological and Clinical Sciences Charles Darwin University Darwin Australia Department of Mathematics and Statistics Murdoch University Murdoch Australia

Pilates therapy improves core muscle function and axial stability but its effects on balance in idiopathic Parkinson’s disease (IPD) have not been evaluated. The objective of this study was to evaluate the effects of a Pilates exercise program on postural stability and balance confidence in people with IPD. Ten IPD patients (Hoehn & Yahr Stage 1-3) with a history of falls or nearfalls had the following assessments before and after completion of a 6-week supervised Pilates exercise program: Activities-Specific Balance Confidence Scale (ABC);Berg Balance Scale (BBS);Schwab and England Scale (SES);Unified Parkinson’s Disease Rating Scale (UPDRS);pull-test;timed-up-and-go (TUG);5-metre walk;static and dynamic posturography. There were significant improvements in BBS score, 5-metre walk time and TUG after the training program, as well as improvement trends in some posturographic measures. Participants also reported improved balance confidence with Activities of Daily Living (ADLs). Our findings suggest that Pilates therapy can be beneficial in IPD and warrants further evaluation in a larger study.

关键词： Parkinson’s Disease Pilates Postural Instability Static Dynamic Posturography

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Polymorphism in the Regulatory Region of the Aromatase CYP19a Gene in Nile Tilapia

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Journal of Life Sciences 2014年第2期8卷 101-105页

作者： Marilia Danyelle Nunes rodrigues Rafael Aldrighi Tavares Harold julian Perez Gutierrez Diones Bender Almeida Carla Giovane Avila Moreira Cecilia Calabuig Josiane Bonel Raposo Heden Luiz MarquesMoreira Department of Animal Science Federal University of Pelotas Pelotas 96160-000 Rio Grande do Sul Brazil Institute of Biology Department of Zoology and Genetics Federal University of Pelotas Pelotas 96160-000 Brazil Institute of Biology Federal University of Rio Grande do Sul Porto Alegre 91501-970 Brazil Department of Animal Sciences Federal Rural University of the Semi-Arid Mossoro 59625-900 Brazil Faculty of Veterinary Department of Pathology Federal University of Pelotas Pelotas 96160-000 Brazil

The aim of this study was to evaluate the polymorphism in a portion of the gene regulatory region for ovarian aromatase （CYP19a） in three strains of Tilapia, Oreochomis niloticus （Linnaeus）（GIFT--Genetically Improved Farmed Tilapia, Chitralada and Supreme）. A total of 90 animals per strain of Tilapia, Oreochromis niloticus （Linnaeus） were analysed. After DNA extraction, samples were subjected to PCR using primers designed to flank the region of interest encompassing the sites of transcription （WT1-KTS and SRY）. Samples were analyzed by PCR-SSCP and subsequently sequenced. Three polymorphisms were identified in this region, resulting in two different sequences, in the GIFT strain while no polymorphism was found in both Supreme and Chitralada strains. At the position - 1178 the substitution of a guanine for a cytosine, at the - 1081 the exchange of guanine for adenine and at the position -1 138 we found a SNP, possible site of heterozygosity. Even with polymorphisms in the target study area, when taking the three strains into account, one can assume that the portion of the regulatory region of the ovarian aromatase gene in the Supreme strain and Chitralada does not show polymorphism.

关键词： Ovarian aromatase Oreochromis niloticus polymorphism regulatory region.

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