Indoor and Built Environment,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 25, 2024
Mobile
air
cleaners
(MACs)
have
been
proposed
as
a
supplementary
solution
to
combat
the
spread
of
respiratory
aerosols
in
school
classrooms.
To
determine
which,
where
and
how
use
MACs,
seven
small-
medium-sized
MACs
were
selected
assessed
for
different
settings
configurations
by
1)
decay
test
determining
clean
delivery
rate
(CADR),
2)
perception
with
panel
subjects,
together
physical
measurements,
noise
movement.
The
findings
show
that
achieve
desired
CADR
(appr.
1000
m
3
/h
30
students
per
classroom),
key
factors
are
induced
airflow
pattern
location
MACs.
an
upward
supply
toward
occupied
zone
showed
much
higher
(max.
775–1332
/h)
than
those
horizontal
219–333
/h).
Moreover,
using
multiple
devices
simultaneously
was
crucial
when
room
size
increased,
combining
mechanical
ventilation
could
improve
aerosol
removal.
Achieving
sufficient
would
always
lead
level
above
limit
35
dB(A),
yet
sometimes
rating
more
50%
acceptable.
velocities
mostly
fulfilled
requirement
(<0.2
m/s),
which
aligned
positive
assessment.
Hence,
evaluation
subjects
can
help
optimize
classroom.
Ecotoxicology and Environmental Safety,
Год журнала:
2024,
Номер
280, С. 116532 - 116532
Опубликована: Июнь 7, 2024
Air
pollution,
a
pervasive
environmental
threat
that
spans
urban
and
rural
landscapes
alike,
poses
significant
risks
to
human
health,
exacerbating
respiratory
conditions,
triggering
cardiovascular
problems,
contributing
myriad
of
other
health
complications
across
diverse
populations
worldwide.
This
article
delves
into
the
multifarious
impacts
air
utilizing
cutting-edge
research
methodologies
big
data
analytics
offer
comprehensive
overview.
It
highlights
emergence
new
pollutants,
their
sources,
characteristics,
thereby
broadening
our
understanding
contemporary
quality
challenges.
The
detrimental
effects
pollution
are
examined
thoroughly,
emphasizing
both
short-term
long-term
impacts.
Particularly
vulnerable
identified,
underscoring
need
for
targeted
risk
assessments
interventions.
presents
an
in-depth
analysis
global
disease
burden
attributable
offering
comparative
perspective
illuminates
varying
different
regions.
Furthermore,
it
addresses
economic
ramifications
quantifying
losses,
discusses
implications
public
policy
care
systems.
Innovative
intervention
measures
explored,
including
case
studies
demonstrating
effectiveness.
paper
also
brings
light
recent
discoveries
insights
in
field,
setting
stage
future
directions.
calls
international
cooperation
tackling
underscores
crucial
role
awareness
education
mitigating
its
exploration
serves
not
only
as
scientific
discourse
but
clarion
call
action
against
invisible
insidious
making
vital
read
researchers,
policymakers,
general
public.
Environmental Research,
Год журнала:
2022,
Номер
217, С. 114849 - 114849
Опубликована: Ноя. 19, 2022
A
naturally-ventilated
operational
classroom
was
instrumented
at
18
locations
to
assess
spatial
variations
of
air
pollution
(CRAP),
thermal
comfort
and
ventilation
indicators
under
10
different
scenarios
(base
scenario
without
purifier
(AP);
three
single
AP
scenarios;
with
two
APs
same
locations;
locations).
Unlike
PM2.5,
monitored
PM10
CO2
concentrations
followed
the
diurnal
occupancy
profile.
Highest
vertical
variation
(38%)
in
entry
zone
40–300
cm
height.
increased
until
225
before
stratifying
further.
highest
levels
children
sitting
height
(100
cm)
decreasing
adult
breathing
(150
cm).
horizontal
(PM10)
were
29%
(22%)
40
between
occupied
zones.
Teachers'
exposure
varied
by
up
6%
(3%);
corresponding
across
14%
(19%).
13%
higher
than
that
18%
lower
for
PM10.
Traffic
emissions
(PM2.5
NOx),
secondary
pollutants
(VOCs
O3),
parameters
noise
level
insignificantly
among
scenarios.
reduction
not
doubled
using
purifiers,
which
most
effective
when
placed
within
PM
concentration
zone.
Cross-comparisons
showed:
use
reduced
classroom's
average
14%;
increasing
AP's
filtration
capacity;
had
insignificant
impact
on
CO2.
showed
a
maximum
46%
(teacher
zone),
62%
(occupied
zone)
50%
(entry
children's
height,
depending
usage
scenario.
This
study
produced
high-resolution
data
validating
detailed
numerical
models
classrooms
informing
decision-making
placement
minimise
CRAP
re-breathed
The Science of The Total Environment,
Год журнала:
2024,
Номер
951, С. 175809 - 175809
Опубликована: Авг. 26, 2024
As
cities
continue
to
grow,
developing
mitigation
strategies
is
crucial
minimize
the
corresponding
increase
in
air
pollutants.
One
source
of
potentially
controllable
pollution
emissions
from
residential
buildings.
We
conducted
a
literature
review
systematically
examine
buildings
urban
areas,
identifying
pollutants
and
their
sources;
investigated
mitigation-aimed
intervention
types
by
field
application
or
study,
finally
listed
discussed
reduce
concentration
Our
compilation
shows
that
among
nature-based
solutions,
green
walls
offered
highest
relative
reduction
(-15
%
NO
Developments in the Built Environment,
Год журнала:
2023,
Номер
16, С. 100266 - 100266
Опубликована: Ноя. 19, 2023
Children
spend
significant
amounts
of
time
at
school,
making
the
school
environment
a
potentially
important
contributor
to
air
quality
exposure.
The
SAMHE
initiative
has
dual
aim:
1)
develop
and
test
bespoke
citizen
science
framework
for
collecting
indoor
data
in
classrooms,
alongside
contextual
capable
enriching
analysis,
an
unprecedented
scale;
and,
2)
simultaneously
use
these
methods
raise
awareness
among
communities
regarding
their
exposure
pollution
environment.
To
achieve
this
aim,
project
was
initiated
deploy
more
than
2
000
low-cost
monitors
classrooms.
A
Web
App
been
co-designed
with
schools
support
large
comprehensive
dataset
(including
buildings'
characteristics,
operation
behavioural
patterns)
enable
students
teachers
interact
gathered
school.
We
present
design
interface
visuals
that
have
20+
tested
120+
schools.
Within
one
week
launch
week,
537
had
registered
join
project,
writing
(just
seven
weeks
later)
number
grown
around
800
This
highlights
potential
novel
provide
step-change
way
datasets
are
national
potentially,
international
level
while
enabling
better
manage
empowering
reduce
environmental
health
risks.
The Science of The Total Environment,
Год журнала:
2024,
Номер
921, С. 171213 - 171213
Опубликована: Фев. 23, 2024
Urban
greenery
can
help
to
improve
air
quality,
reduce
health
risks
and
create
healthy
livable
urban
communities.
This
study
aimed
explore
the
role
of
in
reducing
pollution
at
community
level
Tainan
City,
Taiwan,
using
quality
sensors
street-view
imagery.
We
also
collected
number
road
trees
around
each
sensor
site
identified
species
that
were
best
absorbing
PM2.5.
Three
greenness
metrics
used
assess
this
study:
two
Normalized
Difference
Vegetation
Indices
(NDVI)
from
different
satellites
Green
View
Index
(GVI)
Google
Street
(GSV)
images.
Land-use
Regression
(LUR)
was
for
statistical
analysis.
The
results
showed
a
higher
GVI
within
500
m
buffer
significantly
associated
with
decreased
Neither
NDVI
circular
Evergreen
lower
ambient
PM2.5,
compared
deciduous
semi-deciduous
trees.
Because
localized
changes
profoundly
affect
public
environmental
equity,
our
findings
provide
evidence
future
greenspace
planning
its
beneficial
impacts
on
pollution.
