Flow Visualisation Studies On Wall Mounted Pitot Type Intake With Splitter Plate

Flow Visualisation Studies Employing Schlieren/Shadowgraph Technique And -Simple Oil Flow Technique Were Carried Out On A Simple Pitot Type Of 1-Btake With Splitter Plate Mounted On Base Plate In The NAL 0 .3m Tunnel . Between The Splitter Plate And The Base Plate, A Heat Exchanger Duct With Wedge Diverters Was Also Simulated . From These Studies, The Effect Of Closure Of The Intake Duct And The Heat Exchanger Duct On The Flow Behaviour Was Qualitatively Determined . It Was Found That Flow Constraint In The Heat Exchanger Duct And Diverter Passages Had Considerable Effect On The Flow Through The Intake

Contextual Attention for Hand Detection in the Wild

We present Hand-CNN, a novel convolutional network architecture for detecting hand masks and predicting hand orientations in unconstrained images. Hand-CNN extends MaskRCNN with a novel attention mechanism to incorporate contextual cues in the detection process. This attention mechanism can be implemented as an efficient network module that captures non-local dependencies between features. This network module can be inserted at different stages of an object detection network, and the entire detector can be trained end-to-end. We also introduce a large-scale annotated hand dataset containing hands in unconstrained images for training and evaluation. We show that Hand-CNN outperforms existing methods on several datasets, including our hand detection benchmark and the publicly available PASCAL VOC human layout challenge. We also conduct ablation studies on hand detection to show the effectiveness of the proposed contextual attention module.Comment: 9 pages, 9 figure

Contextual Attention for Hand Detection in the Wild

We present Hand-CNN, a novel convolutional network architecture for detecting hand masks and predicting hand orientations in unconstrained images. Hand-CNN extends MaskRCNN with a novel attention mechanism to incorporate contextual cues in the detection process. This attention mechanism can be implemented as an efficient network module that captures non-local dependencies between features. This network module can be inserted at different stages of an object detection network, and the entire detector can be trained end-to-end. We also introduce large-scale annotated hand datasets containing hands in unconstrained images for training and evaluation. We show that Hand-CNN outperforms existing methods on the newly collected datasets and the publicly available PASCAL VOC human layout dataset. Data and code: https://www3.cs.stonybrook.edu/~cvl/projects/hand_det_attention

Antistaphylococcal activity of bacteriophage derived chimeric protein P128

<p>Abstract</p> <p>Background</p> <p>Bacterial drug resistance is one of the most significant challenges to human health today. In particular, effective antibacterial agents against methicillin-resistant <it>Staphylococcus aureus </it>(MRSA) are urgently needed. A causal relationship between nasal commensal <it>S. aureus </it>and infection has been reported. Accordingly, elimination of nasal <it>S. aureus </it>reduces the risk of infection. Enzymes that degrade bacterial cell walls show promise as antibacterial agents. Bacteriophage-encoded bacterial cell wall-degrading enzymes exhibit intrinsic bactericidal activity. P128 is a chimeric protein that combines the lethal activity of the phage tail-associated muralytic enzyme of Phage K and the staphylococcal cell wall targeting-domain (SH3b) of lysostaphin.</p> <p>Here we report results of in vitro studies evaluating the susceptibility of staphylococcal strains to this novel protein.</p> <p>Results</p> <p>Using the broth microdilution method adapted for lysostaphin, we found that P128 is effective against <it>S. aureus </it>clinical strains including MRSA, methicillin-sensitive <it>S. aureus </it>(MSSA), and a mupirocin-resistant <it>S. aureus</it>. Minimum bactericidal concentrations and minimum inhibitory concentrations of P128 (1-64 μg/mL) were similar across the 32 <it>S. aureus </it>strains tested, demonstrating its bactericidal nature.</p> <p>In time-kill assays, P128 reduced colony-forming units by 99.99% within 1 h and inhibited growth up to 24 h.</p> <p>In an assay simulating topical application of P128 to skin or other biological surfaces, P128 hydrogel was efficacious when layered on cells seeded on solid media. P128 hydrogel was lethal to Staphylococci recovered from nares of healthy people and treated without any processing or culturing steps, indicating its in situ efficacy. This methodology used for in vitro assessment of P128 as an agent for eradicating nasal carriage is unique.</p> <p>Conclusions</p> <p>The novel chimeric protein P128 is a staphylococcal cell wall-degrading enzyme under development for clearance of <it>S. aureus </it>nasal colonization and MRSA infection. The protein is active against globally prevalent antibiotic-resistant clinical isolates and other clinically significant staphylococcal species including <it>S. epidermidis</it>. The P128 hydrogel formulation was bactericidal against Staphylococci including <it>S. aureus </it>recovered from the nares of 31 healthy people, demonstrating its in situ efficacy.</p

Calibration Of Pitor Probes (Circular Cross Section) At Selected Subsonic Mach Number

On The Request Of Gas Turbine Research Establishment, Bangalore, National Aeronautical Laboratory Undertook Calibration Of Several Of Their Pitot Rakes, Which Are Used In Flow Measurements In Test Engines. In This Report, Results Of Pressure Recovery Of Four Pitot Probes At Selected Subsonic Mach Numbers Are Presented

Drag Measurements Of TA Spheres At High Speeds

Results Of Drag Measurements On Two TA Sphere Models With Horizontal And Vertical Belts Are Reported. Tests Were Conducted At Mach Numbers Of 0 .5, 0 .8, 1 .0, 1 .6, 2 .0, 2 .5 And 3 .0. Results Show That The Measured Drag Values Are Not Too Different From The Data On Smooth Spheres Reported In Literature

Calibration Of Pitot Rakes (Rectangular Cross Section) At Selected Transonic Mach Numbers

On The Request Of Gas Turbine Research Establishment, Bangalore, National Aeronautical Laboratory Undertook Calibration Of Several Of Their Pitot Rakes, Which Are Used In Flow Measurements In Test Compressors., In This Report, Results Of Pressure Recovery On Four Pitot Rakes At Selected Transonic Mach Numbers Are Presented