منابع مشابه
Shock Acceleration of Solar Energetic Protons: the First 10 Minutes
Proton acceleration at a parallel coronal shock is modeled with self-consistent Alfvén wave excitation and shock transmission. 18 50 keV seed protons at 0.1% of plasma proton density are accelerated in 10 minutes to a power-law intensity spectrum rolling over at 300 MeV by a 2500km s−1 shock traveling outward from 3.5r , for typical coronal conditions and low ambient wave intensities. Interacti...
متن کاملThe first 20 minutes in the Hong Kong stock market
Based on the minute-by-minute data of the Hang Seng Index in Hong Kong and the analysis of probability distribution and autocorrelations, we find that the index fluctuations for the first few minutes of daily opening show behaviors very different from those of the other times. In particular, the properties of tail distribution, which will show the power law scaling with exponent about −4 or an ...
متن کاملChanges in heart rate in the first minutes after birth.
The normal range of heart rate (HR) in the first minutes after birth has not been defined. Objective To describe the HR changes of healthy newborn infants in the delivery room (DR) detected by pulse oximetry. Study Design All inborn infants were eligible and included if a member of the research team attended the birth. Infants were excluded if they received any form of medical intervention in t...
متن کاملefl students gender and socioeconomic status: the use of politeness strategies in the first and second languages
within the components of communicative competence, a special emphasis is put on the “rules of politeness,” specifically the politeness strategies (brown and levinson, 1978) that speakers deploy when performing the request speech act. this is because the degree of imposition that making a request places upon one’s interlocutor(s) has been seen to be influenced by several factors among which, as ...
Managing preterm infants in the first minutes of life.
Premature infants often experience difficulties adapting to postnatal life. The most relevant ones are related to establishing an adult type cardiorespiratory circulation and acquiring hemodynamic stability, aerating the lung and attaining a functional residual capacity, performing an adequate gas exchange and switching to an oxygen enriched metabolism, and keeping an adequate body temperature....
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ژورنال
عنوان ژورنال: BMJ
سال: 1983
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.286.6380.1768