24,014 research outputs found
Water Quality Monitoring in North River and Little River in Nottingham, NH
The Town of Nottingham Conservation Commission (NCC) in New Hampshire purchased water testing equipment for monitoring the North and Little Rivers as part of the New Hampshire Volunteer River Assessment Program (VRAP). The equipment enabled NCC and Lamprey River Watershed Association (LRWA) volunteer water samplers to efficiently monitor water quality on the two rivers twice a month from May 2007 to June 2008
A Symplectic Case of Artin's Conjecture
Let K/F be an arbitrary Galois extension of number fields and r be a
representation of Gal(K/F) into GSp(4,C). Let E_16 be the elemetary abelian
group of order 16 and C_5 the cyclic group of order 5. If the image of r in the
projective space PGSp(4,C) is isomorphic to the semidirect product of E_16 by
C_5, then we show r satisfies Artin's conjecture by proving r corresponds to an
automorphic representation. A specific case is given where r is primitive, so
Artin's conjecture does not follow from previous results.Comment: Revised 13 June 2003: Corrected typographical errors, included the
construction of an example in the introduction, and added a brief section at
the end discussing the transfer to GSp(4
A Study of the Aurora of 1859
The two great auroral displays of August 28-29 and September 1-2,
1859 are studied from a collection of world-wide descriptive observations.
Both auroras reached to unusually low latitudes. Red glows were reported
as visible from within 23° of the geomagnetic equator in both north and
south hemispheres during the display of September 1-2. It is shown that
by using graphic symbols, descriptive reports may be used to indicate
the significant features of an auroral display. A series of world-wide
maps show the hourly locations and lowest latitude limits of auroral
visibility and overhead aurora for the most active hours. They illustrate
how the progress of an aurora may be followed throughout the night.
Both auroras seen in North America reached their southern limits near
local midnight. During the larger display of September 1-2 the aurora
moved to lower latitudes and also covered a wide range in latitudes.
This indicates that during great displays the auroral activity appears
to expand in latitude until local midnight, at the same time moving
towards the geomagnetic equator. Over large areas both displays were
predominantly red. Magnetic records indicate that there were two distinct
disturbances associated with the two displays. A tabulation of
all known available auroral observations reported from August 28 to
September 5, 1859 illustrates that by using a letter code, significant
auroral activity may be recorded for use in auroral catalogues.Ye
A rating scale for measuring the validity of reading instructional materials for the use of minority groups
Thesis (Ed.M.)--Boston Universit
Resource Letter VWCPF-1: Van der Waals and Casimir-Polder forces
This Resource Letter provides a guide to the literature on van der Waals and
Casimir-Polder forces. Journal articles, books, and other documents are cited
on the following topics: van der Waals forces, retarded dispersion forces or
Casimir-Polder forces between atoms or molecules, Casimir-Polder forces between
a molecule and a dielectric or conducting body, the summation of Casimir-Polder
forces as leading to the Casimir and Lifshitz forces between conducting and
dielectric bodies, Casimir friction, applications to nanotechnology, the nature
of the quantum vacuum, and experimental tests of the theory of Casimir and
Casimir-Polder and van der Waals forces.Comment: 37 pages, no figures. This resource letter is intended to provide
selected references to guide undergraduate students and people new to the
field into the subject of CP and Casimir forces. References are not intended
to be complete. This is substantially enlarged and revised versio
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