9,983 research outputs found
The uniform approximation of polynomials by polynomials of lower degree
approximation, in a given interval,of a polynomial of degree in by a polynomial of degree n < m has been solved analytically in only two cases: (i) by Chebyshev, when m = n + 1, (ii) by Zolotarev, when m = n + 2. In case (i) the solution is expressible in term
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Drying and Deposition of Picolitre Droplets of Colloidal Suspensions in Binary Solvent Mixtures
This work was supported by EPSRC grant number RG5560
Generalized model of blockage in particulate flow limited by channel carrying capacity
We investigate stochastic models of particles entering a channel with a
random time distribution. When the number of particles present in the channel
exceeds a critical value , a blockage occurs and the particle flux is
definitively interrupted. By introducing an integral representation of the
particle survival probabilities, we obtain exact expressions for the survival
probability, the distribution of the number of particles that pass before
failure, the instantaneous flux of exiting particle and their time correlation.
We generalize previous results for to an arbitrary distribution of entry
times and obtain new, exact solutions for for a Poisson distribution and
partial results for .Comment: 13 pages, 9 figure
Mercury deposition in southern New Hampshire, 2006–2009
The atmospheric deposition of mercury (Hg) occurs via several mechanisms including wet, dry, and occult processes. In an effort to understand the atmospheric cycling and seasonal depositional characteristics of Hg, event-based wet deposition samples and reactive gaseous Hg (RGM) measurements were collected for approximately 3 years at Thompson Farm (TF), a near-coastal rural site in Durham, NH, part of the University of New Hampshire AIRMAP Observing Network. Total aqueous mercury exhibited seasonal patterns in Hg wet deposition at TF. The lowest Hg wet deposition was measured in the winter with an average total seasonal deposition of 1.56 μg m−2compared to the summer average of 4.71 μg m−2. Inter-annual differences in total wet deposition are generally linked with precipitation volume, with the greatest deposition occurring in the wettest year. Relationships between surface level RGM and Hg wet deposition were also investigated based on continuous RGM measurements at TF from November 2006 to September 2009. No correlations were observed between RGM mixing ratios and Hg wet deposition, however the ineffective scavenging of RGM during winter precipitation events was evidenced by the less frequent depletion of RGM below the detection level. Seasonal dry deposition of reactive gaseous Hg (RGM) was estimated using an order-of-magnitude approach. RGM mixing ratios and dry deposition estimates were greatest during the winter and spring. The seasonal ratios of Hg wet deposition to RGM dry deposition vary by up to a factor of 80
Alien Registration- Talbot, Germaine A. (Portland, Cumberland County)
https://digitalmaine.com/alien_docs/21333/thumbnail.jp
The Effects of Rectal Temperature and Hydration Status on Perceptual Ratings in Dehydrating Males
Athletes push the limits of what the human body can handle every day. When they exercise in the heat, they can attain dangerous levels of internal temperature and dehydration. Since athletes are sometimes not aware when they are experiencing severe hyperthermia or hypohydration, it is of interest to anyone who exercises in the heat to study whether athletes are consciously aware that they are approaching dangerous physiological limits. This study compares the perceptual values of athletes exercising in the heat to the changes in their internal temperature and hydration status, to see if athletes can reliably predict their heat and fluid stress
The story of Wellesley, Massachusetts, for fifth grade children
Thesis (Ed.M.)--Boston Universit
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