The transition prediction toolkit: LST, SIT, PSE, DNS, and LES

The e(sup N) method for predicting transition onset is an amplitude ratio criterion that is on the verge of full maturation for three-dimensional, compressible, real gas flows. Many of the components for a more sophisticated, absolute amplitude criterion are now emerging: receptivity theory, secondary instability theory, parabolized stability equations approaches, direct numerical simulation and large-eddy simulation. This paper will provide a description of each of these new theoretical tools and provide indications of their current status

An experimental study to measure the concentration of nanofluids by using refractive index

In a decade, nanofluids are a new kind of fluid that has rapid development and wide application in various fields. Especially, nanofluids as a heat transfer fluids in different industrial instead of the traditional heat transfer fluids such as water, oil, and ethylene glycol…etc. The nanofluids have consisted the nano-size metal or metal oxide pArticles with base fluids, the nanoparticles have a superior thermo property to enhance the heat transfer performance of based fluids. Concentration is an important factor that can be influenced by most of the thermal properties of nanofluids. In present, the concentration of nanofluids is predetermined, the amount of nanoparticle and the base fluids should be measured before the nanofluids preparation. However, no specific method for the measurement of nanofluids concentration in real-time and by non-contact method until the present. The Refractive index is an important parameter of material. It is also applied in much researches for material analysis such as material concentration analysis. The current study intended to experiment to find out the correlation between the refractive index and concentration of nanofluids for further development of the non-contact method for the measurement of nanofluids. In this study, a total of 10 different concentrations of Titania oxide (TiO2) nanofluid samples prepared for measurement of refractive index by the minimum deviation method and reference to Jenkin\u27s proposed experiment setting in 1982. The results of this study presented that the refractive index value increased from 1.3411 to 1.3953 by increasing the TiO2 nanofluid concentration from 0.001% to 0.04%. The results of this works will be very helpful for further development of the method of measurement of the nanofluids concentration

MORE OR LESS PREJUDICE? A STUDY ON REAL-TIME VOLUNTEER APPS FOR VISUALLY IMPAIRED PEOPLE

Although digital technologies improve the quality of life for people with visual impairment, their influences on social justice are inconclusive. In this study, we use quantitative and qualitative methods to investigate the effect of real-time volunteer apps on prejudice and social connection from the perspective of both visually impaired people (VIPs) and non-impaired people (NIPs). Counterintuitively, our findings suggest that real-time volunteer apps have even a negative effect on reducing the prejudice perceived by VIPs and have no effect on reducing the prejudice of NIPs. For social connection and social acceptance, we find that these apps have a positive impact on both VIPs and NIPs. We hope this study can inspire more IS research on disability and we suggest several ideas for future research

Chemical Printing of Biological Tissue by Gold Nanoparticle-Assisted Laser Ablation

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Obstructive sleep apnoea syndrome presented as failure to thrive in a Down's syndrome child

Children suffering from Down's syndrome are prone to develop obstructive sleep apnoea syndrome (OSAS) due to craniofacial abnormalities, small upper airway, adenotonsillar hypertrophy and muscular hypotonia.1 OSAS will lead to various complications including failure to thrive.2 We report a Down's syndrome boy whose main presenting feature of OSAS was failure to thrive. He was successfully treated initially with nocturnal continuous positive airway pressure (CPAP) ventilation and subsequently with adenotonsillectomy.published_or_final_versio

Impact of building permeability on pollutants removal effectiveness in urban streets

The 3rd International Postgraduate Conference on Infrastructure and Environment is organized by the Faculty of Construction & Land Use of The Hong Kong Polytechnic University on 11 and 12 July 2011 in Hong Kong.Author name used in this manuscript: C.K. ChauRefereed conference paper2011-2012 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe

Anti-IL-17A antibody-associated de novo vitiligo: Case report and review of literature

Interleukin (IL)-17 inhibitor is a biological therapy approved for moderate to severe psoriasis and psoriatic arthritis. The common adverse events of IL-17 inhibitor include injection site reaction, infections, nasopharyngitis, and headache. However, vitiligo associated with the use of IL-17 inhibitors was rarely reported in the previous literature. Here we described a woman who developed de novo vitiligo after 4 months of IL-17A inhibitor treatment for psoriasis and psoriatic arthritis. Upon discontinuation of IL-17A inhibitor and shifting to a broader T cell inhibitor—cyclosporine, our patient had control of both psoriasis and vitiligo and achieved 75% repigmentation after 3 months of oral cyclosporine without phototherapy. Due to the increasing use of anti-IL-17 biologics in psoriasis patients, clinicians should inquire about vitiligo’s history before treatment and inform patients of the possible adverse effects

Minimizing Electricity Cost through Smart Lighting Control for Indoor Plant Factories

Smart plant factories incorporate sensing technology, actuators and control algorithms to automate processes, reducing the cost of production while improving crop yield many times over that of traditional farms. This paper investigates the growth of lettuce (Lactuca Sativa) in a smart farming setup when exposed to red and blue light-emitting diode (LED) horticulture lighting. An image segmentation method based on K-means clustering is used to identify the size of the plant at each stage of growth, and the growth of the plant modelled in a feed forward network. Finally, an optimization algorithm based on the plant growth model is proposed to find the optimal lighting schedule for growing lettuce with respect to dynamic electricity pricing. Genetic algorithm was utilized to find solutions to the optimization problem. When compared to a baseline in a simulation setting, the schedules proposed by the genetic algorithm can achieved between 40-52% savings in energy costs, and up to a 6% increase in leaf area.Comment: IEEE IECON 202

Flavor SU(3) symmetry and QCD factorization in B→PPB \to PP and PVPV decays

Using flavor SU(3) symmetry, we perform a model-independent analysis of charmless $\bar B_{u,d} (\bar B_s) \to PP, ~PV$ decays. All the relevant topological diagrams, including the presumably subleading diagrams, such as the QCD- and EW-penguin exchange diagrams and flavor-singlet weak annihilation ones, are introduced. Indeed, the QCD-penguin exchange diagram turns out to be important in understanding the data for penguin-dominated decay modes. In this work we make efforts to bridge the (model-independent but less quantitative) topological diagram or flavor SU(3) approach and the (quantitative but somewhat model-dependent) QCD factorization (QCDF) approach in these decays, by explicitly showing how to translate each flavor SU(3) amplitude into the corresponding terms in the QCDF framework. After estimating each flavor SU(3) amplitude numerically using QCDF, we discuss various physical consequences, including SU(3) breaking effects and some useful SU(3) relations among decay amplitudes of $\bar B_s \to PV$ and $\bar B_d \to PV$.Comment: 47 pages, 3 figures, 28 table