Turkish Journal of Agricultural Engineering Research,
Journal Year:
2023,
Volume and Issue:
4(2), P. 278 - 288
Published: Dec. 28, 2023
The
growing
environmental
concern
regarding
synthetic
materials
in
various
engineering
applications
is
driving
increased
research
into
the
production
of
green
composites.
In
this
study,
pineapple
leaf
fiber
(PLF)
and
snail
shell
powder
amended
with
sodium
hydroxide
(NaOH)
solution,
at
concentration
levels
0,
2,
4,
6
8%
for
30,
60
90
minutes,
respectively,
were
used
to
produce
composite
samples;
their
mechanical
properties
tested
agreement
American
Society
Testing
Materials
(ASTM)
International
approved
procedures.
laboratory
test
results
revealed
that
both
NaOH
treatment
period
considerably
influenced
tensile
flexural
strengths
samples.
It
was
observed
samples,
made
reinforcement
modified
concentrations
0%,
2%,
4%,
6%,
durations
60,
exhibited
8.12,
9.88,
11.04,
14.11,
16.74
MPa;
10.93,
14.22,
17.04,
15.71
12.27,
15.19,
14.06,
13.84
MPa,
respectively.
Similarly,
portrayed
samples
produced
treated
6%
developed
strength
31.98,
38.82,
43.97
49.03
36.55,
44.17,
53.38
47.93
39.62,
46.08,
48.17
43.66
also
interesting
observe
minutes
yields
optimum
bending
17.04
MPa
This
finding
potential
using
bio-composites
applications,
mostly
where
moderate
characteristics
are
sought
after.
Applied Sciences,
Journal Year:
2024,
Volume and Issue:
14(19), P. 9012 - 9012
Published: Oct. 6, 2024
This
study
presents
an
air
quality
monitoring
system
that
employs
the
Arduino
Uno
microcontroller.
The
is
augmented
with
a
moving
average
filter
and
data
fusion
techniques
from
BME680
CCS811
sensors,
which
are
designed
to
process
combine
these
sensors.
was
tested
analyzed
empirically
across
range
of
residential
environments
in
order
validate
its
efficacy.
findings
indicated
typical
IAQ
level
bedroom
approximately
20
units.
However,
this
increased
significantly,
reaching
140
units,
within
minutes
after
introduction
17%
perfume
spray.
In
contrast,
use
aromatic
diffuser
resulted
smaller
increase
40
returned
normal
levels
ventilation.
Moreover,
analysis
demonstrated
kitchen
bathroom
exhibited
inferior
comparison
bedroom.
evidenced
by
elevated
VOC
humidity
levels,
were
observed
be
10–20%
higher
due
combined
effects
household
activities
inadequate
makes
significant
contribution
field
proposing
solution
sensor
technology
processing
methods
enhance
life
spaces.
Indonesian Journal of Chemistry,
Journal Year:
2024,
Volume and Issue:
24(6), P. 1772 - 1772
Published: Dec. 1, 2024
To
prevent
deleterious
effects
on
consumers
and
potential
health
damage
caused
by
counterfeit
perfumes,
this
study
aims
to
distinguish
the
original
perfume
from
its
suspected
products.
Fingerprint
volatilomics
profiling
was
performed
using
attenuated
total
reflection-Fourier
infrared
spectroscopy
(ATR-FTIR)
gas
chromatography
hyphenated
mass
spectrometry
(GC-MS).
Headspace
(HS)-GC-MS
optimized
analyze
samples
containing
water.
In
presence
of
water,
our
HS-GC-MS
method
shows
linalool's
consistent
signal
intensity,
providing
an
alternative
analytical
for
water-based
formulation.
The
GC-MS
chemical
characterization
revealed
45
compounds
detected
in
sample
but
only
four
were
products:
linalool,
citronellol,
methyl
jasmonate,
acetic
acid,
propanol.
This
suggests
a
clear
difference
formulation
Counterfeit
products
also
cheat
lower
amount
ingredients.
Relative
quantification
that
linalool
as
low
5.1%
product.
addition,
cheaper
hazardous
materials
like
methanol
6,7-dihydrogeraniol
combination
ATR-FTIR,
GC-MS,
demonstrated
fast
authentication
perfumes
routine
quality
control
purposes
possibility
analysis.
Turkish Journal of Agricultural Engineering Research,
Journal Year:
2023,
Volume and Issue:
4(2), P. 278 - 288
Published: Dec. 28, 2023
The
growing
environmental
concern
regarding
synthetic
materials
in
various
engineering
applications
is
driving
increased
research
into
the
production
of
green
composites.
In
this
study,
pineapple
leaf
fiber
(PLF)
and
snail
shell
powder
amended
with
sodium
hydroxide
(NaOH)
solution,
at
concentration
levels
0,
2,
4,
6
8%
for
30,
60
90
minutes,
respectively,
were
used
to
produce
composite
samples;
their
mechanical
properties
tested
agreement
American
Society
Testing
Materials
(ASTM)
International
approved
procedures.
laboratory
test
results
revealed
that
both
NaOH
treatment
period
considerably
influenced
tensile
flexural
strengths
samples.
It
was
observed
samples,
made
reinforcement
modified
concentrations
0%,
2%,
4%,
6%,
durations
60,
exhibited
8.12,
9.88,
11.04,
14.11,
16.74
MPa;
10.93,
14.22,
17.04,
15.71
12.27,
15.19,
14.06,
13.84
MPa,
respectively.
Similarly,
portrayed
samples
produced
treated
6%
developed
strength
31.98,
38.82,
43.97
49.03
36.55,
44.17,
53.38
47.93
39.62,
46.08,
48.17
43.66
also
interesting
observe
minutes
yields
optimum
bending
17.04
MPa
This
finding
potential
using
bio-composites
applications,
mostly
where
moderate
characteristics
are
sought
after.
