Sensors,
Journal Year:
2024,
Volume and Issue:
24(23), P. 7485 - 7485
Published: Nov. 24, 2024
Accurate
assessment
of
the
aging
state
transformer
oil-barrier
insulation
is
crucial
for
ensuring
safe
and
reliable
operation
power
systems.
This
study
presents
development
indoor
accelerated
thermal
experiments
to
simulate
degradation
oil-immersed
barrier
within
transformers.
A
series
samples
reflecting
various
states
was
obtained
categorized
into
six
distinct
groups.
Raman
spectroscopy
analytical
technology
employed
characterize
information
indicative
different
insulation.
The
raw
spectra
were
processed
using
asymmetric
reweighted
penalty
least
squares
correct
baseline
shifts,
Savitzky-Golay
(S-G)
smoothing
eliminate
fluctuation
noise,
principal
component
analysis
(PCA)
reduce
data
dimensionality
by
extracting
components.
support
vector
machine
(SVM)
classifier
developed
discriminate
between
category
labels.
SVM
parameters
optimized
grid
search,
particle
swarm
optimization
(PSO),
genetic
algorithm
(GA),
yielding
optimal
(C
gamma).
Notably,
search
method
demonstrated
high
efficiency
in
identifying
best
combination
(
Nanomaterials,
Journal Year:
2023,
Volume and Issue:
13(5), P. 955 - 955
Published: March 6, 2023
Graphene
is
a
carbon-based
nanomaterial
used
in
various
industries
to
improve
the
performance
of
hundreds
materials.
For
instance,
graphene-like
materials
have
been
employed
as
asphalt
binder
modifying
agents
pavement
engineering.
In
literature,
it
has
reported
that
(in
comparison
an
unmodified
binder)
Modified
Asphalt
Binders
(GMABs)
exhibit
enhanced
grade,
lower
thermal
susceptibility,
higher
fatigue
life,
and
decreased
accumulation
permanent
deformations.
Nonetheless,
although
GMABs
stand
out
significantly
from
traditional
alternatives,
there
still
no
consensus
on
their
behavior
regarding
chemical,
rheological,
microstructural,
morphological,
thermogravimetric,
surface
topography
properties.
Therefore,
this
research
conducted
literature
review
properties
advanced
characterization
techniques
GMABs.
Thus,
laboratory
protocols
covered
by
manuscript
are
atomic
force
microscopy,
differential
scanning
calorimetry,
dynamic
shear
rheometer,
elemental
analysis,
Fourier
transform
infrared
spectroscopy,
Raman
electron
thermogravimetric
X-ray
diffraction,
photoelectron
spectroscopy.
Consequently,
main
contribution
investigation
state-of-the-art
identification
prominent
trends
gaps
current
state
knowledge.
Environmental Reviews,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 26, 2024
Numerous
empirical
studies
have
demonstrated
that
street
trees
not
only
reduce
dust
pollution
and
absorb
particulate
matter
(PM)
but
also
improve
microclimates,
providing
both
ecological
functions
aesthetic
value.
However,
recent
research
has
revealed
tree
canopy
cover
can
impede
the
dispersion
of
atmospheric
PM
within
canyons,
leading
to
accumulation
pollutants.
Although
many
investigated
impact
on
air
pollutant
extent
their
influence
remains
unclear
uncertain.
Pollutant
corresponds
specific
characteristics
individual
coupled
with
meteorological
factors
source
strength.
Notably,
exert
a
significant
influence.
There
is
still
quantitative
gap
impacts
respect
reduction
control
measures
spaces.
To
urban
traffic
environments,
policymakers
mainly
focused
scientifically
based
vegetation
deployment
initiatives
in
building
garden
cities
improving
living
environment.
address
uncertainties
regarding
streets,
this
study
reviews
mechanisms
key
summarizes
approaches
used
conceptualize
examines
plant
efficiency
reducing
PM.
Furthermore,
we
current
challenges
future
directions
field
provide
more
comprehensive
understanding
streets
role
play
mitigating
pollution.
Chemosensors,
Journal Year:
2025,
Volume and Issue:
13(3), P. 86 - 86
Published: March 3, 2025
Surface-enhanced
Raman
scattering
(SERS)
spectroscopy
has
grown
in
popularity
as
a
bioaerosol
monitoring
method
due
to
its
high
sensitivity
and
specificity,
well
ability
be
performed
complex
biological
mixtures
using
portable
relatively
inexpensive
devices.
However,
lack
of
standardised
methodologies,
SERS
sensing
bioaerosols
remains
difficult.
Full-length
peer-reviewed
journal
articles
related
the
application
examine
were
systematically
searched
PubMed,
Scopus,
Web
Science
databases
PRISMA
guidelines.
A
total
13
studies
met
inclusion
criteria
for
our
systematic
literature
search.
critical
evaluation
experimental
aspects
involved
collection
analysis
is
presented,
elective
applicability
weaknesses
various
setups,
helping
provide
solid
foundation
real-time
characterisation
spectroscopy.
Ecotoxicology and Environmental Safety,
Journal Year:
2023,
Volume and Issue:
265, P. 115497 - 115497
Published: Sept. 18, 2023
Ultrafine
particles
(UFP)
of
Secondary
Organic
Aerosol
(SOA)
penetrate
deep
into
the
human
respiratory
system
and
exert
fatal
effects
on
health.
However,
there
is
little
data
potential
deposited
doses
UFP-generated
SOA
in
tract.
This
study
to
estimate
fraction
aerosol
deposition
using
a
multiple-path-particle-dosimetry
(MPPD)
model.
For
relevancy
real
life,
model
employed
measured
concentrations
toluene-derived
fresh
aged
produced
within
serially
connected
smog
chamber
PAM-OFR
(Potential
Mass-Oxidation
Flow
Reactor)
under
atmospheric
environmental
conditions
(NOx
relative
humidity).
The
number
chemical
composition
aerosols
chambers
were
Scanning
Mobility
Particle
Sizer
(SMPS)
High-Resolution
Time-of-Flight
Mass
Spectrometer
(HR-ToF-AMS),
while
morphology
individual
was
analyzed
Electron
Microscopy
(SEM).
concentration
SOA-w/s
more
than
double
compared
that
(maximum
reached
after
10
h)
with
its
size
less
100
nm.
O:C
ratio
for
0.96
1.15
depending
RH
(0.96
at
3%
50%
RH),
spherical
containing
water
present
agglomerates
1
µm.
In
all
inhalable
two
chambers,
5-22%
Head
airways,
4-8%
tracheobronchial,
8-34%
alveolar
regions.
predominant
occurred
alveoli
(in
generation
20th
lobe),
faction
2-3
times
higher
children
group
adults
group.
presented
quantitative
exposure
assessment
generated
realistic
simulation
suggested
possibility
evaluating
long-term
health
by
determining
system.
