Applied Sciences,
Journal Year:
2024,
Volume and Issue:
14(11), P. 4796 - 4796
Published: June 1, 2024
Approved
medical
face
masks
have
been
shown
to
prevent
the
spread
of
respiratory
droplets
associated
with
coronavirus
transmission
in
specific
settings.
The
primary
goal
this
study
was
develop
a
new
strategy
assess
filtering
and
transmissibility
properties
medical-
non-medical-grade
masks.
In
study,
we
designed
assessed
efficiency
particles
through
six
different
diverse
set
fabrics,
textures
(woven
non-woven),
fiber
diameters,
porosity.
mask
layers
individually
combination
using
mathematical
analyses
experimental
data.
latter
provided
velocity
profiles
filtration
efficiencies
for
which
data
were
be
predictable.
efficacy
pressure
drop
across
each
fabric
tested
an
aerosol
particle
spray
scanning
electron
microscopy.
To
clinical
significance,
temperature
humidity
on
group
healthy
volunteers
spanning
various
age
ranges
(9–79
years
old),
utilizing
embedded
sensor
disc.
Also,
filter
model
developed
fluid
dynamic
simulations
(Solidworks
Flow)
evaluate
aerodynamic
dispersion
droplets.
Overall,
FFP2
FFP3
demonstrated
highest
efficiencies,
exceeding
90%,
feature
multi-layered
that
is
consistent
demonstrating
higher
small
(<5
µm).
all
revealed
low
air
(~1
m/s)
inside
variation
approximately
3
°C
during
breathing
cycle.
Green Technologies and Sustainability,
Journal Year:
2024,
Volume and Issue:
2(2), P. 100074 - 100074
Published: Jan. 21, 2024
As
of
2023,
Bangladesh
stands
as
the
seventh
most
populous
nation
globally,
confronting
challenges
arising
from
limited
resources
and
rapid
urbanization.
The
emergence
COVID-19
pandemic
has
led
to
unprecedented
disruptions
on
a
global
scale,
necessitating
detailed
examination
its
effects,
particularly
within
urban
environments.
This
study
meticulously
scrutinizes
repercussions
environment,
focusing
specifically
Dhaka
City.
In
this
comprehensive
exposition,
we
explore
multifaceted
impact
outbreak,
spanning
environmental
non-environmental
aspects
like
water
quality,
air
municipal
waste
management,
noise
pollution.
We
analyze
data
across
distinct
timeframes,
employing
Indicators,
Impact,
Strategy
(IIS)
framework
for
improvement
sustainability.
reveals
substantial
shifts
in
poised
exert
profound
influence
city’s
inhabitants
overall
ecology.
Notably,
findings
indicate
marked
attributed
partly
reduced
industrial
activity
diminished
vehicular
emissions
during
lockdowns.
However,
management
faced
significant
challenges,
resulting
deterioration
disposal
system.
Of
particular
concern
was
medical
due
increased
generation
pandemic.
concludes
by
proposing
robust
policy
addressing
key
concerns,
including
health,
pollution
control.
These
recommendations
aim
bolster
sustainable
progress
unique
exigencies
era.
grapples
with
pandemic’s
aftermath,
research
offers
valuable
insights
roadmap
ensuring
more
resilient
environmentally
future
Sustainability,
Journal Year:
2023,
Volume and Issue:
15(3), P. 1940 - 1940
Published: Jan. 19, 2023
The
coronavirus
(COVID-19)
pandemic
devastated
all
economies
across
the
world
and
triggered
a
deterioration
in
firms’
financial
performance.
However,
some
sectors
turned
out
to
be
more
vulnerable
while
others
continued
perform
well
during
crisis
period.
Given
this
fact,
we
conducted
comprehensive
study
estimate
impact
of
COVID-19
on
profitability
Europe.
We
used
dynamic
panel
data
approach
system
generalized
method
moment
(System-GMM)
model
investigate
(i)
which
were
affected
what
was
magnitude
profitability,
(ii)
whether
stringency
anti-pandemic
policies
such
as
workplace
closures
travel
bans
impacted
firms
unevenly.
find
that
caused
about
25%
decline
firms.
most
Consumer
Discretionary,
Staples,
Industrials,
where
declined
from
20
48%.
also
countries
with
high
policy
lost
19%
than
rest
Europe
2020.
ACS Applied Polymer Materials,
Journal Year:
2023,
Volume and Issue:
5(6), P. 4372 - 4379
Published: May 5, 2023
Non-biodegradable
polypropylene,
which
poses
a
serious
threat
to
the
environment,
is
most
utilized
material
in
air
filtration
systems.
Moreover,
under
conditions
of
high
temperature
and
humidity,
electrostatic
charge
melt-blown
nonwoven
fabrics
treated
with
traditional
corona
electrets
will
quickly
dissipate.
Here,
biodegradable
polylactic
acid,
calcium
stearate,
an
innovative
hydrocharging
technique
are
reported
develop
environmentally
friendly
acid/calcium
stearate
stability.
Compared
acid
fabrics,
crystallization
structure
storage
have
been
greatly
improved
due
presence
stearate.
In
PM0.3,
it
exhibited
efficiency
(96.78%),
low
pressure
drop
(65.20
Pa),
good
quality
factor
(0.053
Pa–1),
can
meet
N95
respirator
standard.
Furthermore,
worth
mentioning
that
performance
remained
at
level
(>95.00%)
after
2
months.
Importantly,
based
on
test
analysis
surface
potential,
crystallization,
distribution,
we
proposed
plausible
generation
stable
mechanisms.
It
demonstrated
more
potential
for
electret
smart
respirators
as
further
possible
step
research
field.
The Science of The Total Environment,
Journal Year:
2025,
Volume and Issue:
965, P. 178669 - 178669
Published: Feb. 1, 2025
This
study
addresses
the
critical
knowledge
gap
on
riverine
macroplastic
inputs
to
marine
litter,
focusing
changes
in
waste
composition
a
post-pandemic
context.
While
plastic
pollution
has
been
widely
documented,
data
floating
macrolitter
from
urban
rivers
remain
limited.
The
first
comprehensive,
year-round
assessment
of
at
both
branches
Tiber
River
mouth
were
conducted,
using
harmonized
RIMMEL
approach
dedicated
android
App.
simultaneous
monitoring
conducted
two
sites
(TIB2
and
TIB3),
recorded
abundance,
material
composition,
size
common
item
types,
revealing
an
estimated
annual
transport
rate
9
×
105
items/year
Mediterranean
Sea.
Specifically,
was
104
±
87
items/h
density
1170
151
items/km2.
litter
exhibited
seasonal
variability,
with
highest
peak
observed
autumn
lowest
summer.
Findings
reveal
reduction
<34
%
total
items,
countered
by
rise
single-use
such
as
cups,
bottles
label
lids
stick
cotton
bud
lollies,
sanitary
towel
condom.
COVID-19-related
items
face
masks
gloves
also
recorded.
Over
half
under
10
cm,
suggesting
fragmentation
before
reaching
sea.
enhances
understanding
big
European
capital,
providing
dataset
identify
patterns
track
evolution
waste.
Environmental Research,
Journal Year:
2021,
Volume and Issue:
203, P. 111849 - 111849
Published: Aug. 6, 2021
While
the
COVID-19
pandemic
is
still
in
progress,
being
under
fifth
wave
Madrid,
over
more
than
one
year,
Spain
experienced
a
four
pattern.
The
transmission
of
SARS-CoV-2
pathogens
Madrid
metropolitan
region
was
investigated
from
an
urban
context
associated
with
seasonal
variability
climate
and
air
pollution
drivers.
Based
on
descriptive
statistics
regression
methods
in-situ
geospatial
daily
time
series
data,
this
study
provides
comparative
analysis
between
waves
incidence
mortality
cases
different
quality
conditions.
During
analyzed
period
1
January
2020-1
July
2021,
for
each
were
recorded
anomalous
anticyclonic
synoptic
meteorological
patterns
mid-troposphere
favorable
stability
conditions
disease
fast
spreading.
As
airborne
microbial
temporal
pattern
most
affected
by
changes,
paper
found:
1)
significant
negative
correlation
temperature,
Planetary
Boundary
Layer
height,
surface
solar
irradiance
new
deaths;
2)
similar
mutual
seasonality
variables
first
fourth
COVID-waves
spring
seasons
2020
2021
years.
Such
information
may
help
health
decision
makers
public
plan
future.
Environmental Research,
Journal Year:
2022,
Volume and Issue:
212, P. 113437 - 113437
Published: May 18, 2022
During
the
ongoing
global
COVID-19
pandemic
disease,
like
several
countries,
Romania
experienced
a
multiwaves
pattern
over
more
than
two
years.
The
spreading
of
SARS-CoV-2
pathogens
in
Bucharest,
capital
is
multi-factorial
process
involving
among
other
factors
outdoor
environmental
variables
and
viral
inactivation.
Through
descriptive
statistics
cross-correlation
analysis
applied
to
daily
time
series
observational
geospatial
data,
this
study
aims
evaluate
synergy
incidence
lethality
with
air
pollution
radon
under
different
climate
conditions,
which
may
exacerbate
coronavirus'
effect
on
human
health.
entire
analyzed
period
1
January
2020-21
December
2021,
for
each
four
waves
were
recorded
anomalous
anticyclonic
synoptic
meteorological
patterns
mid-troposphere,
favorable
stability
conditions
during
fall-early
winter
seasons
disease
fast-spreading,
mostly
second,
fourth
waves.
As
temporal
airborne
its
mutagen
variants
affected
by
seasonal
variability
main
pollutants
parameters,
paper
found:
1)
exposures
(particulate
matter
PM2.5
PM10,
nitrogen
dioxide-NO2,
sulfur
dioxide-SO2,
carbon
monoxide-CO)
-
222Rn,
are
directly
correlated
mortality,
contribute
spread
severity
pandemic;
2)
ground
ozone-O3
levels,
temperature,
Planetary
Boundary
Layer
height,
surface
solar
irradiance
anticorrelated
new
deaths,
averageingful
spring-summer
periods.
Outdoor
exposure
ambient
associated
non-negligible
driver
transmission
large
metropolitan
areas,
risk
infection.
findings
provide
useful
information
public
health
authorities
decision-makers
develop
future
diseases
strategies
high
polluted
environments.
