Gizmorama!

Gizmorama -
“The Cutting Edge of Science Fact and Science Possibilities”
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Good Morning,

One of todays’ articles deals with the issue
of a Greenhouse gas emissions study.

Have A Good Day!

Until Tomorrow,
Erin

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       Drug helps acute myeloid leukemia patients

A French-led international study suggests acute mye-
loid leukemia patients treated with Vidaza (azaciti-
dine) have significantly increased overall survival.
Acute myeloid leukemia is a cancer in which abnormal
cells accumulate in bone marrow and interfere with
normal blood cell production. Patients with AML typ-
ically have a poor prognosis and do not respond well
to conventional chemotherapy, researchers said, noting
approximately 30 percent of patients diagnosed with
myelodysplastic syndrome, formerly known as
“preleukemia,” will progress to AML. Dr. Pierre Fenaux
of the University of Paris said the results from an
international phase III trial that was the first to
show an increased overall survival for higher-risk MDS
patients. The study showed 50 percent of the AML pa-
tients who were treated with Vidaza survived at least
two years, compared with only 16 percent of patients
treated with conventional regimens. “The data … are
encouraging for both physicians and patients and demo-
nstrate the major advancements that have been made in
treating hematologic conditions, like MDS and AML,
over the past several years,” said Kathy Heptinstall,
operating director of the Myelodysplastic Syndromes
Foundation, “We are hopeful about the potential of
novel therapies, like Vidaza, which are helping pa-
tients to live longer with a better quality of life.”
The study data were presented last week in San
Francisco during the annual meeting of the American
Society of Hematology.

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          Greenhouse gas emissions study released

U.S. scientists say contrary to earlier projections,
few developing countries will be able to reduce their
greenhouse gas emissions for several decades. The
study by researchers at the National Center for Atmo-
spheric Research and the University of Colorado warns
continuing economic and technological disparities will
make it more difficult than anticipated for developing
countries to reduce greenhouse gas emissions, and that
underscores the challenges that poorer nations face in
trying to adapt to global warming. “There is simply no
evidence that developing countries will somehow become
wealthier and be in a position to install more environ-
mentally friendly technologies,” said Patricia Romero
Lankao, an NCAR sociologist and lead author of the
study. “We always knew that reducing greenhouse gas
emissions was going to be a challenge, but now it
looks like we underestimated the magnitude of this
problem.” As a result, most industrialized nations,
as well as developing countries with growing economies,
are increasing their emissions of carbon dioxide, the
researchers said. Overall, global emissions grew at an
annual rate of 1.3 percent during the 1990s and at 3.3
percent from 2000 to 2006. The study, funded by the
National Science Foundation, appears in the journal
Climate Research.

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         New polymer coatings prevent corrosion

U.S. scientists say they are developing new polymer
coatings that will not only protect materials, but
also help tiny scratches “heal” themselves. University
of Illinois researchers said applications for the coat-
ings range from automotive paints and marine varnishes
to the thick, rubbery coatings on patio furniture and
park benches. “Starting from our earlier work on self-
healing materials … we have now created self-healing
coatings that automatically repair themselves and pre-
vent corrosion of the underlying substrate,” said
Professor Paul Braun, corresponding author of the
study. The scientists said they first encapsulate a
catalyst into spheres less than 100 microns in diameter
– a micron is 1 millionth of a meter. They also en-
capsulate a healing agent into similarly sized micro-
capsules. The microcapsules are then dispersed within
the desired coating material and applied to the sub-
strate. “By encapsulating both the catalyst and the
healing agent, we have created a dual capsule system
that can be added to virtually any liquid coating
material,” said Braun. When the coating is scratched,
some capsules break, spilling their contents into the
damaged region. The catalyst and healing agent react,
repairing the damage within minutes or hours, depending
upon environmental conditions. A paper detailing the
research has been accepted for publication in the
journal Advanced Materials.