Gümüşhane Üniversitesi Fen Bilimleri Enstitüsü Dergisi,
Год журнала:
2023,
Номер
unknown
Опубликована: Дек. 27, 2023
Çocuk
parkları,
çocukların
zamanlarının
önemli
bir
kısmını
geçirdiği,
oyun
oynadığı
ve
sosyalleştiği
alanlar
olarak
karşımıza
çıkmaktadır.
Ancak
kent
merkezlerinde
yer
alan
parkları
hem
kentteki
kirletici
kaynaklardan
de
yapılarında
kullanılan
malzemelerden
salınan
emisyonlardan
etkilenmektedirler.
Bu
çalışma
çocuk
parklarında
maruz
kalınan
element
seviyelerinin
belirlenmesi
bu
elementlerin
oluşturduğu
potansiyel
sağlık
risklerinin
hesaplanması
için
gerçekleştirilmiştir.
Çalışmada
İzmir’in
Buca
ilçesindeki
parklarından
28
park
seçilerek
yüzey
tozu
örnekleri
toplanmıştır.
Toplanan
örneklerde
25
elementin
enstrümantal
analizleri
gerçekleştirilerek
konsantrasyonları
belirlenmiş
parkların
taban
kaplamasına
(kauçuk,
beton
kum)
göre
değerlendirilmiştir.
En
yüksek
kauçuk
kaplamalı
parklarda
özellikle
Zn,
Ba,
Cu,
Pb,
Co
Sb
elementleri
belirlenmiştir.
Diğer
taraftan
toplanan
tozundaki
toksik
özelliklere
sahip
elementlere
maruziyet
sonucunda
oluşabilecek
etkileri
(kanserojen
olmayan
riskler
kanser
riskleri)
ABD
Çevre
koruma
ajansının
(EPA)
yayınladığı
model
kullanılarak
Buna
As
kanserojen
risklerini
temsil
eden
tehlike
indeksi
değeri
sınır
değere
çok
yakın
hesaplanırken
toplam
ise
aşmıştır.
International Journal of Sustainable Engineering,
Год журнала:
2024,
Номер
17(1), С. 1 - 9
Опубликована: Фев. 21, 2024
This
study
analyzes
the
impact
of
energy
efficiency
and
renewable
use
on
carbon
emissions
in
G7
countries.
The
period
examined
covers
years
1971–2023.
There
are
two
important
results.
first
is
cointegration
relationship
between
variables.
Accordingly,
there
a
long-run
efficiency,
emissions.
second
direction
strength
this
relationship.
When
increases,
decrease.
result
consistent
with
general
expectations.
On
other
hand,
positive
consumption
not
existence
an
issue
that
needs
to
be
discussed.
Sustainability,
Год журнала:
2024,
Номер
16(3), С. 1032 - 1032
Опубликована: Янв. 25, 2024
The
globe
is
transitioning
from
traditional
methods
of
electricity
generation
to
renewable
resources
in
order
achieve
sustainable
goals.
Solar
energy
a
promising
and
abundant
resource
that
shows
great
potential
as
viable
alternative
energy.
Furthermore,
the
production
solar
most
cost-effective
compared
other
kinds
Nevertheless,
execution
initiatives
underdeveloped
nations
encountering
several
obstacles.
Identifying
significant
obstacles
projects
utmost
importance.
This
study
uses
linear
regression
model
(LRM)
an
analytical
hierarchical
process
(AHP)
determine
main
barriers
implementation
developing
economy,
i.e.,
Pakistan.
By
conducting
extensive
review
relevant
literature
consulting
with
experts,
categories
were
determined.
A
survey
based
on
429
responses
was
collected
participants
working
at
projects.
Subsequently,
subjected
processing
analysis
using
relative
importance
index
(RII),
AHP,
modeling
techniques.
revealed
variables
hinder
progress,
including
financial
conditions,
policies,
technological
awareness,
institutional
support,
social
environmental
market
stability,
miscellaneous
factors.
AHP
key
factors
have
greatest
impact,
which
include
effective
expertise,
various
aspects,
awareness.
study’s
conclusions
are
beneficial
for
all
stakeholders
project
managers
enhancing
management
initiatives.
It
would
also
facilitate
prompt
decision-making
regarding
policy
formulation
implementation.
Energy & Environment,
Год журнала:
2024,
Номер
unknown
Опубликована: Апрель 26, 2024
The
significant
allure
of
widely
available
fossil
energy
sources
at
a
reasonable
cost
engenders
formidable
impediments
to
the
transition
toward
renewable
in
Saudi
Arabia,
one
world's
foremost
energy-producing
nations.
Mitigating
escalating
levels
emissions
and
addressing
substantial
ecological
deficits
requires
comprehensive
investigation
prospective
contributions
efficiency
high-tech
industry
as
integral
components
strategic
response
environmental
challenges.
In
light
this,
our
current
study
employs
quarterly
data
spanning
from
1990
2021
introduces
an
innovative
approach
known
time-varying
quantile
regression
(TVQR),
which
has
not
been
previously
utilized
existing
literature.
We
complement
this
with
nonparametric
causality
assess
impacts
disaggregated
efficiency,
industry,
social
globalization
on
quality
(proxied
by
load
capacity
factor
(LF))
across
different
quantiles
time
intervals
Arabia.
Our
TVQR
analysis
reveals
that
both
oil
gas
have
positive
impact
quality,
evidenced
their
ability
enhance
LF
indicator
portion
intervals.
Conversely,
economic
growth
negative
quality.
Additionally,
selected
explanatory
variables
exhibit
predictive
power
over
various
frames
quantiles.
Lastly,
we
formulated
policy
framework
aimed
enhancing
