Response of renewable energy minerals to energy policy and technological advancement: An assessment of the Russian energy crisis
Journal of Environmental Management,
Год журнала:
2024,
Номер
370, С. 122608 - 122608
Опубликована: Сен. 21, 2024
Язык: Английский
Numerical Analysis of Combined Dust-Gas Control in Roadway Excavation
Journal of Cleaner Production,
Год журнала:
2025,
Номер
unknown, С. 145023 - 145023
Опубликована: Фев. 1, 2025
Язык: Английский
Experimental Study on Gas Flow Characteristics in Coal under Different Mining-Induced Stress Paths
ACS Omega,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 19, 2025
To
investigate
the
impact
of
stress
variations
on
coal
permeability
during
mining,
this
study
combines
theoretical
analysis
with
experimental
research
to
reveal
variation
patterns
under
three
mining-induced
conditions.
The
results
indicate
that
exhibits
a
three-stage
characteristic
different
stresses:
slow
increase,
significant
and
rapid
increase.
As
axial
increases,
initially
decreases
then
stabilizes.
After
reaching
strain
peak
sample
failure,
through-cracks
form
surface,
leading
During
quasi-hydrostatic
pressure
loading
stage,
increasing
stress,
while
it
gradually
recovers
confining
unloading
notable
increase
after
stress.
Gas
extraction
efficiency
is
particularly
ideal
peak,
most
effect
observed
in
relief
zone.
Based
Forchheimer
equation
Klinkenberg
effect,
calculated
parabolic
trend
between
gas
flow
rate
gradient,
as
well
pore
permeability.
Язык: Английский
Financing sustainable energy: Cost-benefit analysis of CO2 reduction in China
Energy Strategy Reviews,
Год журнала:
2025,
Номер
58, С. 101667 - 101667
Опубликована: Март 1, 2025
Язык: Английский
On cutting coal dependency for establishing a cleaner energy mix: A proposal for energy transition strategy in South Africa
Energy Strategy Reviews,
Год журнала:
2025,
Номер
58, С. 101694 - 101694
Опубликована: Март 1, 2025
Язык: Английский
Review of organic pollutants in coal combustion processes and control technologies
Progress in Energy and Combustion Science,
Год журнала:
2025,
Номер
109, С. 101231 - 101231
Опубликована: Март 20, 2025
Язык: Английский
The Effect of Market Structure on Sales of Coal Companies Listed on the Indonesia Stock Exchange (IDX) for the Period 2018 - 2022
Ekuilibrium Jurnal Ilmiah Bidang Ilmu Ekonomi,
Год журнала:
2024,
Номер
19(2), С. 223 - 244
Опубликована: Сен. 3, 2024
The
limited
product
diversification
of
the
Indonesian
coal
mining
industry
underscores
imperative
for
formulation
strategic
business
plans
to
navigate
intensifying
market
competition.
This
study
aims
examine
structure,
factors
influencing
sales,
and
impact
structure
on
sales
performance
companies
in
Indonesia.
employs
a
quantitative
method
utilizes
range
analytical
techniques,
including
CR4,
HHI,
MES,
CLR,
PCM,
multiple
linear
regression.
CR4
HHI
analysis
revealed
that
Indonesia
is
classified
as
highly
concentrated
tight
oligopoly.
MES
yielded
conclusion
new
sector
face
significant
barriers
entry.
findings
CLR
analysis,
which
indicates
capital-intensive
industry,
suggest
equity
capital
are
primary
contributors
challenges
faced
by
attempting
enter
market.
results
regression
indicate
production
volume
have
positive
effect
company
sales.
finding
corroborated
PCM
suggests
with
low
share
tend
set
higher
margins
obtain
greater
profits.
Increasing
investment
levels
may
serve
viable
strategy,
particularly
when
supported
government
policies
aimed
at
fostering
secure
stable
environment
enhance
capital.
Язык: Английский