The study diagnoses the relative impacts of the four known tropical Indo-Pacific drivers, namely, El Niño Southern Oscillation (ENSO), ENSO Modoki, Indian Ocean Dipole (IOD), and Indian Ocean Basin-wide mode (IOBM) on African seasonal rainfall variability. The canonical El Niño and El Niño Modoki are in general associated with anomalous reduction (enhancement) of rainfall in southern (northern)...

BACKGROUND Pain and needle-phobia can be a problem during the application of local anesthesia with syringe and needle. OBJECTIVE To evaluate a jet-injection device (without needle) to deliver local anesthesia. METHODS Two hundred and six minor dermatological procedures using a jet-injection device for administering local anesthesia into skin tissue were performed. We comment on the technica...

This paper presents a computational investigation of a tangential slot blowing conccpt for generating lateral control forces on an aircraft fuselage forcbody. The effects of varying both the jet width and jet exit velocity for a fixed location slot are analyzed. This work is aimcd at aiding rrscarchcrs in designing future experimental and compm tational models of tangential slot blowing. The pr...

A new algorithm for estimating noncompact, distributed sources by means of phased array microphone measurements is presented and experimentally implemented to determine the noise source distribution in a subscale jet  ow. Conventional beamforming techniques, developed for spatially well-separated point sources, can lead to signiŽ cant errors when applied to reconstruct continuous source distri...

Aims. We study an anomaly in the X-ray flux (or luminosity) ratio between the Ovii λλ21.6-22.1 triplet and the Oviii Lyα line seen in classical T Tauri stars (CTTS). This ratio is unusually high when compared with ratios for mainsequence and non-accreting T Tauri stars (Telleschi et al. 2007). We compare these samples to identify the source of the excess. A sample of recently discovered X-ray s...

A circular disc hitting a water surface creates an impact crater which after collapse leads to a vigorous jet. Upon impact an axisymmetric air cavity forms and eventually pinches off in a single point halfway down the cavity. Two fast sharp-pointed jets are observed shooting up- and downwards from the closure location, which by then has turned into a stagnation point surrounded by a locally hyp...

an experimental study has been performed to investigate the flow physics of an under-expanded axisymmetric supersonic jet exhausting transversely from a flat plate into a subsonic compressible cross flow. the goal was to study the effects of boundary layer thickness ratio (δ/d) and the jet to free stream dynamic pressure ratio (j) on surface pressure. the resulting measurements distinctly show ...

in this study, the effect of suction and the parameters such as suction amplitude, suction coefficient and suction jet length on naca0012 was evaluated. the turbulence employed model was the rsm model. suction jet is located in 10% of the chord length. the range of suction jet entrance velocity was selected from 0.1 to 0.5 of freestream velocity. the maximum increase in lift to drag ratio was s...

The Lighthill acoustic analogy indicates that substantial noise reduction is possible in high-speed jets by reducing the radiation efficiency. This entails reducing the convective Mach number of the eddies whose footprint is sensed in the near pressure field. In dualstream jets, local reduction in convective Mach number is possible by inducing asymmetry in the plume that redistributes the most ...