480 research outputs found
DAALDER, IVO et Michael E. O'HANLON. Winning Ugly. NATO'S War to Save Kosovo. Washington, D.C., Brookings Institution’s Press, 2000, IX+343 p.
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STOETT, Peter. Human and Global Security. An Exploration of Terms. Toronto, University of Toronto Press, 1999, XI+168 p. incluant un index.
Get PDFAdvanced Dual Beam Optical Tweezers for Undergraduate Biophysics Research
Get PDFOptical tweezing is a modern physics technique which allows us to use the radiation pressure provided from laser beams to trap very small microscopic particles. In the last two decades optical tweezers have been used extensively in biophysics and atomic physics to study the building blocks of our world on the cellular and quantum levels. Our goal is to construct a dual beam optical tweezers for future undergraduate biophysical research. In this thesis we discuss how the construction and assembly of the dual beam optical tweezers is done from start to finish. Construction consisted of assembling a polarization maintaining laser. This was then split into two to create a dual beam effect. Directing both beams in symmetrical and equidistant paths with the help of optical elements, the beams were overlapped in a counter propagating orientation. Microscopes were then used to focus the lasers into the target flow cell. Another set of optics were used to image the inside of the flow cell so we could visualize the laser trapping. It was necessary to construct a custom compressed air system to isolate the optical table from surrounding vibration so that we can accurately measure the pico-newton scale forces that are observed in biological systems. In addition, the biomaterial flow system was designed to supply the flow cell with biological solutions essential for experimentation. Future plans for this project include developing the software in order to collect experimental data and run biophysics experiments. This optical tweezers apparatus will allow us to study potential cancer drug interactions with DNA at the single molecule level and be a powerful tool in promoting interdisciplinary research at the undergraduate level
Daniel Gay, Les élites québécoises et l’Amérique latine, Montréal, Nouvelle Optique, 1983, 341 p.
Get PDFDemocracy postponed: a political economy of Brazil’s oligarchic foreign policy
No full textThis
chapter
examines
the
ebbs
and
flows
of
pressure
to
democratize
Brazil’s
foreign
policy
and
their
implications
for
Brazil’s
Ministry
of
Foreign
Affairs,
Itamaraty,
which
claims
a
monopoly
over
the
formulation
and
practice
of
the
country’s
diplomacy.
We
hold
distinct
the
questions
of
the
democratic
character
of
Brazilian
foreign
policy
and
the
extent
to
which
it
is
monopolized
by
Itamaraty
(Lopes,
2013).
Just
as
a
state’s
monopoly
over
the
means
of
violence
tells
us
little
about
a
country’s
democratic
nature,
the
monopolization
of
diplomacy
by
a
foreign
ministry
provides
scant
insight
into
the
character
of
a
country’s
foreign
policy.Research
for
this
paper
supported
by
Australian
Research
Council
grant#
DE120100401.Australian Research Counci
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