نتایج جستجو برای: the wind

تعداد نتایج: 16073694  

2014
James S. McDonnell

AMERICAN METEOROLOGICAL SOCIETY | 1171 AFFILIATIONS: Fishman—Department of Earth and Atmospheric Sciences, and Center for Environmental Sciences, Saint Louis University, St. Louis, Missouri; Belina—Center for Environmental Sciences, Saint Louis University, St. Louis, Missouri; encarnaciòn—Saint Louis Science Center, St. Louis, Missouri CORRESPONDING AUTHOR: Dr. Jack Fishman, Department of Earth...

2004
M. A. M. ABUL-FADL

Interest in urinary 8i-glucuronidase has recently developed from the work of Boyland, Wallace, and Williams (1955), who found high levels of this enzyme in the urine of patients with carcinoma of the bladder. The method used by these authors was modified from that of Talalay, Fishman, and Huggins (1946). After a careful study of the following points, however, it was found necessary to reinvesti...

2010
M. H. Albadi E. F. El-Saadany

Although wind power is sustainable, environmental friendly and relatively inexpensive source of electricity, the effects of its intermittent nature on power systems need to be carefully investigated. This paper presents an up-to-date overview of the impacts of wind power variability on overall generation cost. Recent case studies from different utilities around the globe demonstrated that wind ...

2008
T. J. B. Collins Adam Frank J. E. Bjorkman

Received ; accepted – 2 – ABSTRACT In this paper we provide a possible link between the structure of the bipolar nebula surrounding SN1987A and the properties of its progenitor star. A Wind Blown Bubble (WBB) scenario is employed, in which a fast, tenuous wind from a Blue Supergiant expands into a slow, dense wind, expelled during an earlier Red Supergiant phase. The bipolar shape develops due ...

1999
L. A. FISK N. A. SCHWADRON T. H. ZURBUCHEN

A theory for the origin of the slow solar wind is described. Recent papers have demonstrated that magnetic flux moves across coronal holes as a result of the interplay between the differential rotation of the photosphere and the non-radial expansion of the solar wind in more rigidly rotating coronal holes. This flux will be deposited at low latitudes and should reconnect with closed magnetic lo...

2005
Jason W.T. Hessels Roger W. Romani

A remarkable number of pulsar wind nebulae (PWN) are coincident with EGRET γ-ray sources. X-ray and radio imaging studies of unidentified EGRET sources have resulted in the discovery of at least 6 new pulsar wind nebulae (PWN). Stationary PWN (SPWN) appear to be associated with steady EGRET sources with hard spectra, typical for γ-ray pulsars. Their toroidal morphologies can help determine the ...

2001
T. A. Gardiner A. Frank

Recent studies have focused on the the role of initially weak toroidal magnetic fields embedded in a stellar wind as the agent for collimation in planetary nebulae. In these models the wind is assumed to be permeated by a helical magnetic field in which the poloidal component falls off faster than the toroidal component. The collimation only occurs after the wind is shocked at large distances f...

1998
Raffaele Crapolicchio Pascal Lecomte

This paper summarizes the major events occurred since the launch of ERS-1 and ERS-2 Wind Scatterometer, and shows the results from the monitoring of the instrument by looking at the telemetry data stream (e.g. working modes, currents, voltages and temperatures of AMI instrument) and the fast delivery product (e.g. doppler, noise and calibration information). The latter allows also the monitorin...

2015
L V Suresh

The wind power industries arepresently the fastest raising renewable energy sector throughout the world compare to other sourses. the main aim of this paper is to develop the mathematical model and implemented in simulations for torque control of two bladed and three bladed wind turbine, by changing coefficient of power, tip speed ratio and pitch angle values for different wind speeds.To ensure...

1999
RAYMOND A. RICHARDSON ISAAC GINIS LEWIS M. ROTHSTEIN

Numerical simulations of the local equatorial ocean response to idealized westerly wind burst (WWB) forcing are described. In particular, the authors examine the development and evolution of the subsurface westward jet (SSWJ) that has been observed to accompany these wind events. This westward current is interpreted as the signature of equatorial waves that accompany the downwelling and upwelli...

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