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This
article
discusses
the
toxic
effects
of
inhalation
of
gallium
arsenide,
indium
arsenide
and
indium
phosphide
dusts.
Exposure
to
these
semiconductor
compounds
in
the
microelectronic
industry
can
occur
during
the
preparation
of
materials,
cleaning
and
maintenance
operations.
The
article
discusses
the
limited
findings
about
routes
of
exposure
and
effects
on
biological
systems
including
pulmonary,
...
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This
site
is
a
lecture
from
Tulane
University
that
explores
atoms
and
how
they
interact
with
one
another
to
determine
the
physical
and
structural
properties
of
crystals.
Topics
include
atoms,
isotopes,
the
quantum
mechanical
view
of
the
atom,
the
electronic
structure
of
atoms,
ions,
electronegativity,
and
various
types
of
bonds
that
bind
the
atoms
together
in
a
crystal
structure.
Tables
and
illustrations
...
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Once
a
website
for
online,
one-on-one
tutoring,
Technical
Tutoring
is
now
a
repository
of
help
pages
developed
by
Phil
Otken.
Examples
and
lessons
on
many
aspects
of
calculus,
algebra,
trigonometry,
and
basic
chemistry.
Each
lesson
includes
a
concise
discussion
and
step-by-step
intructions,
formulas,
and
figures.
This
resource
is
part
of
the
Teaching
Quantitative
Skills
in
the
Geosciences
collection.
...
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The
goal
of
the
Computers
in
Chemistry
at
Cabrillo
College
(C4)
Project
is
to
improve
the
learning
of
chemical
concepts
through
the
use
of
computer
visualization.
C4
produces
and
disseminates
software
to
be
used
in
chemistry
and
biology
classrooms,
both
in
colleges
and
high
schools.
The
project
specializes
in
the
design
and
educational
use
of
molecular
visualizations
and
animations.
C4
is
producing
...
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This resource from Dr. Terry Frey at San Diego State University is an abbreviated introduction to crystallography and x-ray diffraction. Topics include an overview, crystal growth, crystal classes and symmetry, two descriptions of diffraction, experimental approaches, and other x-ray diffraction methods. Illustrations and diagrams are also incorporated into the article.
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This report summarizes the current knowledge of naturally occurring radioactive materials in oil-fields of the United States. Of particular concern is the effect on public health and the environment of exposure to radioactive materials in the form of radium-bearing water and 'scale' deposits in tanks and pipes, which may travel far from the oil fields as scrap metal products.
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This
USGS
site
provides
access
to
data
sets
collected
by
the
National
Water-Quality
Assessment
Program.
It
features
fact
sheets,
reports,
bibliographies,
additional
data
sets
and
links
to
other
resources
about
nutrients
in
streams,
rivers
and
aquifers
of
the
United
States.
The
site
briefly
explains
what
nutrients
are,
how
they
are
used
in
the
agricultural
industry,
how
they
react
chemically
in
the
...
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The
goal
of
this
introductory
college
level
exercise
is
to
get
students
to
characterize
the
phenomenon
of
the
ozone
hole
on
their
own.
This
is
an
inquiry-based
activity
designed
to
spark
student
interest,
curiosity,
and
a
desire
to
understand
the
causes
of
this
atmospheric
problem.
A
multitude
of
rich
data
sets
are
accessible
to
students.
There
are
several
sections,
each
linked
with
data
sets
and
...
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The
biocomplexity
institute
at
Indiana
University
is
a
collaborative
effort
among
several
academic
departments.
The
institute
is
active
in
the
areas
of
research,
communication
and
outreach,
software
and
resources,
and
training
of
scientists.
This
web
site
provides
in-depth
information
on
research
projects,
bioimaging,
bioinformatics,
biocomplexity
in
the
curriculum,
and
more.
The
site
also
features
...
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This fact sheet provides general information about elemental chromium, including types of chromium, uses, and the effects of short-term and long-term exposure.
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