منابع مشابه
Design and Theoretical Assessment of Experimental Glide Path and Flare Systems
SUMMARY Two experimental glide path and flare systems are described, one using spoilers installed in the aircraft to provide direct lift control. The various longitudinal control modes, altitude hold, glide path and flare, have similar feedback control gains whose values were determined by parameter optimisation. An assessment of the performance of these two systems is described. Using elevator...
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Solar flares are observed at all wavelengths from decameter radio waves to gamma-rays at 100 MeV. This review focuses on recent observations in EUV, soft and hard X-rays, white light, and radio waves. Space missions such as RHESSI, Yohkoh, TRACE, and SOHO have enlarged widely the observational base. They have revealed a number of surprises: Coronal sources appear before the hard X-ray emission ...
متن کاملFlare up to betalactams.
BACKGROUND The flare up phenomenon has most frequently been described with nickel. Not many cases of flare up to drugs have reported in the literature, however we have reported it with different medications. METHODS AND RESULTS A 31-year-old woman developed an adverse reaction with an antibiotic during her childhood. Prick test with penicillin (100,000 IU/ml), penicilloyl polylysine (PPL), mi...
متن کاملSolar Flare Cycles
We present a review of different solar flare periodicity intervals. Our analysis includes a statistical investigation of flare occurrence and N-S hemispheric distribution over the last three 11-yr solar cycles (SCs 21-23, corresponding to the period 1976-2001). Moreover, we try to estimate if there is any connection between the flare activity and the strength of solar cycles. For that purpose, ...
متن کاملFlare Measurement Challenges and Methodologies
There has been an increased awareness by oil and gas companies in North America towards emissions monitoring and reduction for both environmental and economical reasons. For years, several countries worldwide have had stringent regulation in place. Regulations were implemented back in 1993 relating to the measurement of fuel and flare gas for calculation of CO2 tax in the petroleum activities o...
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ژورنال
عنوان ژورنال: Nature
سال: 1991
ISSN: 0028-0836,1476-4687
DOI: 10.1038/353204c0