evolution a scientific american reader pdf
Tài liệu Congressional Government A Study in American Politics pdf
Ngày tải lên :
21/02/2014, 08:20
... exactly
accurate, the House has as many leaders as there are subjects of legislation; for there are as many Standing
Committees as there are leading classes of legislation, and in the consideration ... the
charter of the United States Bank, an institution which was the central pillar of Hamilton's wonderful
financial administration, and around which afterwards, as then, played so many of ... constitutional balances and administrative arrangements are
many years behind the actual practices of the government at Washington, and that we are farther than most of
us realize from the times and the policy...
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scientific american - 1994 06 - was there a race to the moon
Ngày tải lên :
12/05/2014, 14:56
... forming a radial wave packet, we
created a state that exhibits strong
classical characteristics. Our goal,
however, was to form a classical atom.
In that regard, the radial wave packet
has a shortcoming. ... òourished, Pampa de las Lla-
mas-Moxeke, located along the south-
ern branch of the Casma, was a bustling
66 SCIENTIFIC AMERICAN
June 1994
Early Andean Cities
Some 3,800 years ago Pampa de las Llamas-Moxeke ... York Advertising Man-
ager ; William Buchanan, Manager, Corporate
Advertising ; Randy James, Elizabeth Ryan. CHI-
CAGO: 333 N. Michigan Ave., Chicago, IL 60601;
Patrick Bachler, Advertising Manager....
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scientific american - 1994 08 - red tides - a growing hazaed
Ngày tải lên :
12/05/2014, 14:57
... the EPAÕs Of-
fice of Radiation and Indoor Air, notes
that over a dozen more radon studies
are under way, and the EPA has asked
the National Academy of Sciences to do
a meta-analysis of available ... treatment, a physician will have
behaved honorably. As recently stated
in a national meeting on prostate can-
cer, the 70-year-old man dying of meta-
static disease was probably at age 50 a
man ... white dwarf stars and one
a star with an active corona
The fourth
was a cataclysmic variable star, a binary
system that occasionally brightens by a
factor of ịve to 100, named SS Cygni.
Because...
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scientific american - 1995 08 - a new theory of aids latency
Ngày tải lên :
12/05/2014, 15:01
... on.
SCIENTIFIC AMERICAN August 1995 45
PHILIP MORRISON at Los Alamos Labo-
ratory in 1945.
LOS ALAMOS NATIONAL LABORATORY (INSET)UPI/BETTMANN
ATOMIC SCIENTISTS gather at a base
in the Marianas ... that rose and rotated in an updraft. The storm was a highly
organized Òsupercell,Ó an ideal tornado breeding ground. As William Gargan, a
graduate student at the University of Oklahoma, and I approached ... within larger masses of
rotating air known as mesocyclones. In
1953 a mesocyclone appeared on a ra-
dar screen at Urbana, Ill., as a hook-
shaped appendage on the southwest
side of a stormếs radar...
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scientific american - 1997 03 - the rising seas - how much of a threat
Ngày tải lên :
12/05/2014, 15:21
... such
NOT IN MY
BACKYARD
Could ocean mud trap nuclear
waste from old Russian subs?
NUCLEAR WASTE
ABC AJANSI Gamma Liaison
JERRY ALEXANDER Tony Stone Images
Copyright 1997 Scientific American, Inc.
... libraries will be digital. Yet it will
probably take another decade beyond
that before half the libraries’ materials
will be available in digital formats.
Hazards in the Road Ahead
T
his transition ... markets not only for drugs that
might boost a failing memory but also
for pharmaceuticals that, administered
after a traumatic event, might prevent
News and Analysis32 Scientific American March...
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scientific american - 1998 03 - inside a virtual human
Ngày tải lên :
12/05/2014, 15:34
... University
Copyright 1998 Scientific American, Inc.
The Caiman Trade 70 Scientific American March 1998
The Caiman Trade
by Peter Brazaitis, Myrna E. Watanabe
and George Amato
A
small, sleek handbag is prominently ... species are separated by scattered uplands and the
Brazilian shield from the Yacaré caiman, Caiman yacare. The
fourth member of the group, the broad-snouted caiman, or
Caiman latirostris, roams river ... environmental factors
such as ultraviolet light and moisture
can change the materials’ properties.
And as is the case for any material, an
excessive load can cause failure and
damage. “But how...
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scientific american - 1998 09 - a last look at laetoli
Ngày tải lên :
12/05/2014, 15:43
... have ground his works to powder just the same.
Three and a half million years ago a trio of furry bipeds walked across
an African savanna caked with damp volcanic ash. Maybe it was a happy
family ... MANUFACTURING MANAGER
Tanya Goetz, DIGITAL IMAGING MANAGER
Silvia Di Placido, PREPRESS AND QUALITY MANAGER
Madelyn Keyes, CUSTOM PUBLISHING MANAGER
Norma Jones, ASSISTANT PROJECT MANAGER
Carl ... TRUST
HADAR
OMO
OLDUVAI
GORGE
LAETOLI
LAKE
TURKANA
ETHIOPIA
EASTERN
RIFT VALLEY
KENYA
TANZANIA
N
LAETOLI AREA in northern Tanzania
lies in the eastern branch of the Great
Rift Valley, where many hominid...
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scientific american - 1999 02 - a fractual walk down wall street
Ngày tải lên :
12/05/2014, 15:53
... have
moderate or high levels.
—Rodger Doyle (rdoyle2@aol.com)
HONG KONG
SINGAPORE
ISRAEL
KUWAIT
QATAR
UNITED ARAB
EMIRATES
CUBA
HAITI
GUATEMALA
HONDURAS
EL SALVADOR
NICARAGUA
COSTA RICA
PANAMA
TURMOIL ... cichlids occurs
in Africa, in particular the
great East African lakes
of Victoria, Malawi and
Tanganyika.
Geologic data indicate
that Lake Victoria, shaped like a saucer the size
of Ireland, formed ... investigate models
providing more accurate estimates of risk.
Multifractals and the Market
A
n extensive mathematical basis already exists for fractals
and multifractals. Fractal patterns appear not...
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scientific american - 2001 01 - brave new cosmos - a special report
Ngày tải lên :
12/05/2014, 16:07
... are TAMA (near Tokyo), Virgo (near Pisa,
Italy) and GEO (near Hannover, Germany). And to monitor grav-
itational waves with longer wavelengths,
NASA and the Euro-
pean Space Agency are planning ... C.B.
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KIBALE
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BOSSOU
TA ... of all matter in galaxies and
galaxy clusters using a variety of opti-
cal, x-ray and radio techniques. The
unequivocal conclusion was that the to-
tal mass in chemical elements and dark
matter...
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scientific american - 2002 05 - a fire within - inflammation's link to heart attacks
Ngày tải lên :
12/05/2014, 16:12
... WITHIN
Inflammation’s Link to Heart Attacks
AFIRE WITHIN
Inflammation’s Link to Heart Attacks
COPYRIGHT 2002 SCIENTIFIC AMERICAN, INC.
It causes chest pain, heart attack
and stroke, leading to more deaths
every ... Periodicals postage paid at New
York, N.Y., and at additional mailing offices. Canada Post International Publications Mail (Canadian Distribution) Sales Agreement No. 242764. Canadian BN No. 127387652RT;
QST ... consider them a double planet. In addition,
Pluto has a rapidly escaping atmosphere and complex seasonal patterns.
■ NASA has chosen a team called New Horizons to build a spacecraft that would
study...
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scientific american - 2002 06 - spintronics - a new twist in computing
Ngày tải lên :
12/05/2014, 16:12
... dwarf);
NOAO/AURA/NSF (Small Magellanic Cloud); DAVID MALIN, â ANGLO -AMERICAN OBSERVATORY (Leo I); NOAO/AURA/NSF (M89, M49, M110, M84); R. BRANCH/R. MILNER /A. BLOCK/NOAO/
AURA/NSF (NGC 660); A. ... the axe and the
hoe up to gala dresses.”
14 SCIENTIFIC AMERICAN JUNE 2002
Tr ansistor Sales
■
Meat Business
■
Amazon Trade
DDT DELIVERY in the Italian
antimalaria campaign, 1952
50, 100 & ... Arrest. Anne N. Maggioncalda,
Nancy M. Czekala and Robert M. Sapolsky in American Journal of Physical
Anthropology, Vol. 118, No. 1, pages 25–32; May 2002.
More information on orangutans is available...
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