International Consensus Statement on Rhinology and Allergy: Rhinosinusitis

Background: The 5 years since the publication of the first International Consensus Statement on Allergy and Rhinology: Rhinosinusitis (ICAR‐RS) has witnessed foundational progress in our understanding and treatment of rhinologic disease. These advances are reflected within the more than 40 new topics covered within the ICAR‐RS‐2021 as well as updates to the original 140 topics. This executive summary consolidates the evidence‐based findings of the document. Methods: ICAR‐RS presents over 180 topics in the forms of evidence‐based reviews with recommendations (EBRRs), evidence‐based reviews, and literature reviews. The highest grade structured recommendations of the EBRR sections are summarized in this executive summary. Results: ICAR‐RS‐2021 covers 22 topics regarding the medical management of RS, which are grade A/B and are presented in the executive summary. Additionally, 4 topics regarding the surgical management of RS are grade A/B and are presented in the executive summary. Finally, a comprehensive evidence‐based management algorithm is provided. Conclusion: This ICAR‐RS‐2021 executive summary provides a compilation of the evidence‐based recommendations for medical and surgical treatment of the most common forms of RS

Experimental study of the production of biomass by Sacharomyces cerevisiae in a fed batch fermentor

The aim of this study is to investigate production of Baker’s yeast using a theoretically programmed fed-batch fermentor to produce as much as possible Baker’s yeast biomass using a minimal amount ofsubstrate with low energy for stirring and aerating. Theoretical data obtained through material balance and kinetics equations were compared with experimental data and possible disagreements discussedwith possible physical explanations. The result showed that the experimental biomass yield is greater than the theoretical one. An experimental yield of 92.2% was obtained for growing 191 mol of biomasswith 207.8 mol of sugar with low oxygen uptake rate. Also, the obtained specific growth rate () of 0.39 h-1 exceeds by far the maximum specific growth rate of the yeast under aerobic condition as obtained theoretically

A comparative study of non-parametric models for identification of linear-time invariant systems

A comparative study of methods used for identification of Linear-Time-Invariant (LTI) systems based on Non-parametric model (step, impulse, sine and frequency responses) and Parametric model (autoregressive external inputs) was conducted. A series of experiments conducted on a laboratory heating system showed that the step and impulse responses were good identification methods but only limited to first order process. The frequency response using the sine response was good for estimating the gain and phase shift of system in frequency doma-in, but was time consuming. However, the frequency response method using random binary signals was good for unpredicted white noise characteristics and considered the best method for non-parametric system identifica-tion. The autoregressive external input (ARX) model was very useful for system identification, but on applicati-on, few input parameters gave poor model fit, while many parameters led to complex modeling. The analyses were based on Matlab software package Release 14. Journal of Applied Science and Technology Vol. 13 (1 & 2) 2008: pp. 20-2

Xylenes Synthesis, Characterization and Physicochemical Properties

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Nanocomposite MFI-Alumina membranes: Influence of operating parameters on Xylene Vapour Mixture Separation.

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Nanocomposite MFI-alumina based Catalytic Membrane Reactors: Application for Meta-xylene Isomerization over Pt-HZSM-5 Catalyst.

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Xylenes Synthesis, Characterization and Physicochemical Properties

Please help populate SUNScholar with the full text of SU research output. Also - should you need this item urgently, please send us the details and we will try to get hold of the full text as quick possible. E-mail to [email protected]. Thank you.IngenieursweseProsesingenieurswes

Energy efficient process for xylene isomer separation: The use of nanocomposite MFI-ceramic hollow fibres.

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Nanocomposite sodalite/ceramic membrane for pre-combustion CO2 capture: synthesis and morphological characterization

Carbon capture and storage (CCS) is amongst the possible options to reduce CO2 emission. In the application of CCS, CO2 capture techniques such as adsorption and membrane system have been proposed due to less energy requirement and environmental benign than the absorption process. However, membrane system has drawbacks such as poor membrane reproducibility, scale-up difficulty and high cost of the membrane supports. In this study synthesis and characterization of nanocomposite sodalite (HS)/ceramic membrane via “pore-plugging” hydrothermal synthesis (PPH) protocol for pre-combustion CO2 capture is reported. The morphology and crystallinity of the as-prepared membranes were checked with scanning electron microscopy and X-ray diffraction. Surface chemistry of the membrane was examined with Fourier Transform Infrared spectroscopy. In nanocomposite architecture membranes, zeolite crystals are embedded within the pores of the supports instead of forming thin-film layers of the zeolite crystals on the surface of the supports. Compared to the conventional in situ direct hydrothermal synthesis, membranes obtained from PPH possess higher mechanical strength and thermal stability. In addition, defect control with nanocomposite architecture membranes is possible because the zeolite crystals are embedded within the pores of the support, thereby limiting the maximum defect size to the pore size of the support. Furthermore, the nanocomposite architecture nature of the membranes safeguards the membrane from shocks or abrasion that could promote formation of defects. The aforementioned advantages of the nanocomposite architecture membranes could be beneficial in developing high performance and cost-effective membrane materials for pre-combustion CO2 capture.</p