Electronics,
Год журнала:
2023,
Номер
12(19), С. 4134 - 4134
Опубликована: Окт. 4, 2023
The
advancement
of
Internet
Things
(IoT)
has
enhanced
the
extensive
usage
QR
code
images
in
various
computer
vision
applications.
Nonetheless,
this
also
brought
forth
several
technical
challenges.
In
particular,
logistics
sorting
system
often
encounters
issues
such
as
a
low
recognition
rate
and
slow
processing
speed
when
dealing
with
under
complex
lighting
conditions
like
uneven
illumination.
To
address
these
difficulties,
method
that
focuses
on
achieving
fast
adaptive
binarization
through
dynamic
illumination
equalization
was
proposed.
First,
an
algorithm
based
edge
enhancement
to
obtain
position
detection
patterns
within
applied,
which
enabled
acquisition
structural
features
Subsequently,
can
achieve
equalization.
As
for
validation,
experiments
were
performed
two
datasets
include
influenced
by
strong
light,
weak
different
shadow
degrees.
results
disclosed
benefits
proposed
compared
previous
approaches;
it
produced
superior
rates
78.26–98.75%
cases
commonly
used
decoders
(Wechat
Zxing),
faster
0.0164
s/image,
making
proper
satisfy
real-time
requirements
practical
applications,
system.
Trends in Food Science & Technology,
Год журнала:
2024,
Номер
146, С. 104384 - 104384
Опубликована: Фев. 17, 2024
Manufacturers
and
consumers
are
increasingly
aware
that
asymmetric
information
can
lead
to
potential
risks
in
food
safety
supply
chain
integrity.
The
traditional
paper
labels,
due
their
limited
size,
no
longer
able
realize
the
transmission
of
a
large
amount
information.
Quick
Response
(QR)
code,
as
one
most
versatile
commercially
successful
digital
technologies,
provides
feasible
approach
connecting
physical
with
its
relevant
information,
has
been
gradually
discovered
exploited
recent
years
–
attracting
increasing
attention.
In
this
review,
brief
overview
QR
code
configuration
technical
principle
is
provided,
along
comparisons
other
technologies.
Moreover,
it
useful
current
applications
codes
developed
practiced
transmission.
On
basis,
limitations
development
direction
for
improving
properties
discussed.
Food
packaging
suitable
data
storage
quick
access.
have
good
performance
traceability,
quality
evaluation,
anti-counterfeiting,
marketing.
Given
limitations,
flexible
combination
complementary
consumers'
sense
gratification
after
use,
forcing
encouraging
companies
implement
possible
directions
maximizing
utilization
future
within
chain.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 3, 2024
Abstract
Recoverable
and
humidity‐tolerant
colorimetric
sensors
are
extremely
difficult
to
overcome.
In
this
work,
a
composite
hydrogel
sensor
based
on
chelation
reaction
is
proposed
for
the
first
time
achieve
ultra‐fast
recovery
ultra‐low
detection
limit
(LOD)
of
H
2
S
sensing.
The
constructed
by
polyvinyl
alcohol/boric
acid/Pb
2+
(PVA/Bn/Pb)
sensing
layer
polyacrylamide/sodium
alginate
(PAM/SA)
adsorption
layer.
change
from
white
brown
achieved
in
can
be
restored
when
placed
air.
response/recovery
mechanism
explained
transfer
Pb
between
hydrogels
formation
an
“Alginate‐Pb
”
with
egg‐box
structure
during
process.
multimodal
fusion
deep
neural
network
(MF‐DNN)
overcome
error
caused
aging.
Due
excellent
loading
diffusion
function
provided
3D
hydrogel,
has
broad
range
0.2–100
ppm,
10s/32s,
theoretical
LOD
0.026
ppm.
A
smartphone‐based
system
developed
enable
non‐invasive
halitosis
diagnosis,
egg
freshness
detection,
remote
monitoring
alarming.
recoverable,
humidity‐tolerant,
capable
ultrafast
widely
applicable.
This
work
provides
inspiration
recoverable
gas
Analytical and Bioanalytical Chemistry,
Год журнала:
2023,
Номер
415(18), С. 4039 - 4060
Опубликована: Март 31, 2023
The
growing
interest
in
the
development
of
cost-effective,
straightforward,
and
rapid
analytical
systems
has
found
cellulose-based
materials,
including
cellulose
derivatives,
gels,
nanocellulosic
corresponding
(nano)cellulose-based
composites,
to
be
valuable
platforms
for
sensor
development.
present
work
presents
recent
advances
sensors
determination
volatile
analytes
derivatives
relevance.
In
particular,
strategies
described
literature
fabrication
modification
substrates
with
responsive
materials
are
summarized.
addition,
selected
contributions
reported
field
paper-based
discussed,
a
particular
emphasis
on
quick
response
(QR)
code
platforms,
intelligent
films
food
freshness
monitoring,
arrays
discrimination
purposes.
Furthermore,
devised
ionic
species
by
situ
generation
both
devices
(PADs)
microfluidic
PADs
will
also
described.
Microchimica Acta,
Год журнала:
2024,
Номер
191(3)
Опубликована: Фев. 14, 2024
Salivary
pH
serves
as
a
valuable
and
useful
diagnostic
marker
for
periodontal
disease,
it
not
only
plays
critical
role
in
disease
prevention
but
also
its
development.
Typically,
saliva
sampling
is
collected
by
draining
spitting
into
collection
tubes
or
using
swabs.
In
this
study,
we
have
developed
Point-of-Care
(POC)
device
situ
determination
of
oral
without
the
need
complex
instruments,
relying
solely
on
smartphone
detection
device.
Our
system
utilizes
non-toxic
vegetable
colourimetric
indicator,
immobilized
chitosan
membrane
located
disposable
stick,
enabling
direct
within
buccal
cavity.
An
ad
hoc
designed
3D-printed
attachment
used
to
ensure
accurate
positioning
alignment
well
isolation
from
external
lighting
conditions.
A
custom-developed
application
captures
automatically
processes
image
sensing
membrane,
providing
salivary
results.
After
optimizing
cocktail
composition,
sensors
demonstrated
capacity
determine
range
5.4
8.1
with
remarkable
precision
0.6%,
achieving
very
short
analysis
time
just
1
min.
stability
study
conducted
membranes
revealed
lifetime
50
days.
To
validate
performance
our
analytical
device,
compared
results
against
those
obtained
calibrated
pH-meter,
group
individuals.
The
exhibited
an
average
error
2.4%
when
pH-meter
results,
confirming
reliability
accuracy.
Materials,
Год журнала:
2024,
Номер
17(2), С. 455 - 455
Опубликована: Янв. 18, 2024
Starch-based
films
are
a
valuable
alternative
to
plastic
materials
that
based
on
fossil
and
petrochemical
raw
resources.
In
this
study,
corn
potato
starch
with
50%
glycerol
as
plasticizer
were
developed,
the
properties
of
confirmed
by
mechanical
properties,
surface
free
energy,
roughness,
and,
finally,
color
gloss
analyses.
Next,
overprinted
using
ink-jet
printing
quick
response
(QR)
codes,
text,
pictograms.
Finally,
print
quality
obtained
prints
was
determined
optical
density,
parameters,
visual
evaluation
prints.
general,
exhibit
lower
values
parameters
(tensile
strength,
elongation
at
break,
Young
Modulus)
water
transition
rate
(11.1
mg·cm−2·h−1)
than
film
(12.2
mg·cm−2·h−1),
solubility
is
18.7
±
1.4
20.3
1.2%
for
film,
respectively.
The
results
starch-based
very
promising.
QR
codes
quickly
readable
smartphone.
sharpness
lettering
worse
film.
At
same
time,
higher
densities
measured
films.
study
show
strong
potential
modern
substrate.
