This article presents an improved Filtering Facepiece Respirator (FFR) designed to increase the comfort of wearers during low-moderate work. The improved FFR aims to lower the deadspace temperature and CO2 level by an active ventilation fan. The reversing modeling is used to build the 3D geometric model of this FFR; the Computational Fluid Dynamics (CFD) simulation is then introduced to investi...

The present study aimed at assessing a novel annular-ducted fan lift system for VTOL aircraft through computational fluid dynamics (CFD) simulations. The power and lift efficiency of the lift fan system in hover mode, the lift and drag in transition mode, the drag and flight speed of the aircraft in cruise mode and the pneumatic coupling of the tip turbine and jet exhaust were studied. The resu...

No dendritic spikes occur in the input fan of the lobular giant movement detector (LGMD) neurone. The action potentials are initiated at the point of thickening of the axon, which therefore represents the site of convergence of the retinotopic projection in the MD system. Previous work has shown that the site of decrement in response to repetitive visual stimulation is distal to this point. No ...

Jet fans are applied for control of air flow and support of pollutant dispersal in large enclosures. In The Netherlands, application is well known for car parks as part of the fire safety design. In the design phase often the Computational Fluid Dynamics (CFD)-technique is used to verify the fire safety level afforded by the application of jet fans. However, very little is known on the modellin...

Chen Liu, Haijun Xie, Jun Xu, Chen Jian*, Ren Dai 2 School of Energy and Power Engineering, University of Shanghai for Science and Technology 3 E-mail: [email protected] 4 Abstract: 5 The Gurney flap (GF) is a miniature lift-enhancement device and is usually mounted at the trailing 6 edge of an airfoil. The GF and has been successfully applied to isolated airfoils, multi-element 7 airf...

Studies have demonstrated that large-volume culture methods for sterile body fluids other than blood increase recovery compared to traditional plated-medium methods. BacT/Alert is a fully automated blood culture system for detecting bacteremia and fungemia. In this study, we compared culture in BacT/Alert standard aerobic and anaerobic bottles, BacT/Alert FAN aerobic and FAN anaerobic bottles, ...

The Japanese Fan The folding fan is probably one of the representative images that most commonly dwell in the gallery of picturesque metaphors of Japan. Whether in the hands of a beautiful geisha or a valiant samurai, the fan is one of those objects that the external gaze has understood as peculiar of Japanese culture and that more successfully made an impact on the construction of the myth of ...

and the Dutch Diabetes Foundation. Special thanks to the general practitioners and pharmacists in the Ommoord district for their contributions to the Rotterdam Study and to the general practitioners in the Erasmus Rucphen Family (ERF) region for their contributions to the ERF study. Erasmus University and the Departments of Epidemiology & Biostatistics and Clinical Genetics provided fi nancial ...

This paper presents a discussion on 2D block mappings for the sparse Cholesky factorization on parallel MIMD architectures with distributed memory. It introduces the fan-in algorithm in a general manner and proposes several mapping strategies. The grid mapping with row balancing, inspired from Rothberg's work 21, 22] proved to be more robust than the original fan-out algorithm. Even more eecien...