In the current environment of increasingly fierce competition in international and domestic markets, opportunities and challenges coexist in the process of enterprise development. In order to stand ...out from the fierce competition and achieve long-term development goals, enterprises need to innovate the existing management mode. Lean management, as an advanced management model verified by many enterprises, has been affirmed and paid more attention to by more enterprises. Therefore, with this theme, this paper firstly elaborates on the background of the application of lean management, then specifies the meaning and application of lean management, and finally, proposes how to use lean management strategies to promote the high-quality development of enterprises from various aspects. We hope to inspire and draw reference from more enterprise managers to improve enterprise management and achieve high-quality development of enterprises.
Highlights • Dihydroartemisinin (DHA) induces ferroptosis in head and neck carcinoma cells. • FOXM1 is implicated in DHA-mediated cell cycle arrest. • DHA holds promise as a treatment strategy for ...head and neck cancer.
Prussian blue analogues (PBAs) are appealing active materials for post-lithium electrochemical energy storage. However, PBAs are not generally suitable for non-aqueous Li-ion storage due to their ...instability upon prolonged cycling. Herein, we assess the feasibility of PBAs with various lithium content for non-aqueous Li-ion storage. We determine the crystal structure of the lithiated PBAs via neutron powder diffraction measurements and investigate the influence of water on structural stability and Li-ion migration through operando X-ray diffraction measurements and bond valence simulations. Furthermore, we demonstrate that a positive electrode containing Li
FeFe(CN)
⋅nH
O (0 ≤ x ≤ 2) active material coupled with a Li metal electrode and a LiPF
-containing organic-based electrolyte in coin cell configuration delivers an initial discharge capacity of 142 mAh g
at 19 mA g
and a discharge capacity retention of 80.7% after 1000 cycles at 1.9 A g
. By replacing the lithium metal with a graphite-based negative electrode, we also report a coin cell capable of cycling for more than 370 cycles at 190 mA g
with a stable discharge capacity of about 105 mAh g
and a discharge capacity retention of 98% at 25 °C.
This article is devoted to study the following Schrödinger–Poisson system
-
Δ
u
+
V
(
x
)
u
+
K
(
x
)
ϕ
u
=
a
(
x
)
|
u
|
p
-
2
u
+
|
u
|
4
u
,
x
∈
R
3
,
-
Δ
ϕ
=
K
(
x
)
u
2
,
x
∈
R
3
,
where
4
<
p
<
...6
,
V
(
x
),
K
(
x
) and
a
(
x
) are nonnegative functions. Under some reasonable conditions on
V
(
x
),
K
(
x
) and
a
(
x
), particularly
a
(
x
) can be unbounded, we first investigate the existence of one positive ground state solution and the corresponding energy estimate with the help of Nehari manifold. Meanwhile, its regularity is established through the interior
L
p
-estimate. Subsequently, heavily relying on the above results, especially the regularity, we show that the problem possesses one least energy sign-changing solution with precisely two nodal domains by employing constraint variational method and the deformation lemma due to Hofer. Moreover, energy doubling is established, that is, the energy of sign-changing solution is strictly larger than that of the ground state solution.
In this paper, we look for solutions to the following fractional nonlinear Schrödinger equations with prescribed
L
2
-norm constraint:
(
-
Δ
)
s
u
=
λ
u
+
|
u
|
p
-
2
u
in
Ω
,
u
=
0
on
∂
Ω
,
∫
Ω
|
u
...|
2
d
x
=
a
2
,
where
s
∈
(
0
,
1
)
,
Ω
⊂
R
N
(
N
≥
3
) is an exterior domain with smooth boundary
∂
Ω
≠
∅
such that
R
N
\
Ω
is bounded. Combining minimax method, barycentric functions, and Brouwer degree theory, we prove the existence of positive normalized solution for any
a
>
0
, when
2
<
p
<
2
+
4
s
N
and
R
N
\
Ω
is contained in a small ball. In particular, by imposing that
a
>
0
is small, we can still achieve the same result without any restrictions on
Ω
. Finally, if
Ω
is the complement of the unit ball in
R
N
, with the aid of genus theory, we establish the existence and multiplicity of radial normalized solutions for any
a
>
0
.
Display omitted
•Analyzing the coupling coordinated development contributes to environmental sustainability.•The coupling coordination degree shows an upward trend.•Used Dynamic fsQCA to explore ...multiple driving paths.•Identified three driving paths: technology–driven, finance–driven and urban–development–driven.•Significant regional heterogeneity across driving paths.
Exploring the coupling coordinated development of carbon emission reduction and sequestration (CERS) and food security in agriculture is conducive to mitigating climate change and achieving sustainable development goals. However, there is little research on the coupling coordinated development of these two systems. Based on panel data of 31 Chinese provinces from 2001 to 2021, this study used the dynamic fuzzy set qualitative comparative analysis (fsQCA) method to analyze the levels and driving paths of coupling coordinated development between agricultural CERS and food security. The results revealed that (1) the coupling coordination degree increased from 0.443 in 2001 to 0.489 in 2021, showing an upward trend. (2) We identified three driving paths of coupling coordination development: technology-driven, finance-driven and urban-development-driven. (3) The grain sown area and unit yield are core variables, serving as fundamental pillars, and their combination with technology or financial expenditure enhances this coordinated development. Notably, the grain sown area and unit yield exhibit a complementary relationship, while agricultural technology and financial expenditure demonstrate a substitution relationship. (4) Temporal analysis showed a consistent trend in the technology-driven and finance-driven paths. Regional analysis revealed marked heterogeneity: the technology-finance synergy path predominates in the remote west, the technology-driven path lies in the mountainous southwest, the finance-driven path clusters in the north, and the urban-development-driven path is located in economically advanced regions. Policymakers should formulate policies according to these different driving paths to promote coupling coordinated development.
In this article, we study the following Kirchhoff–Schrödinger–Poisson system with pure power nonlinearity
-
(
a
+
b
∫
R
3
|
∇
u
|
2
d
x
)
Δ
u
+
V
(
x
)
u
+
K
(
x
)
ϕ
u
=
h
(
x
)
|
u
|
p
-
1
u
,
x
∈
R
...3
,
-
Δ
ϕ
=
K
(
x
)
u
2
,
x
∈
R
3
,
where
a
,
b
are positive constants, and
3
<
p
<
5
. Under some proper assumptions on the potentials
V
,
K
and
h
, not requiring nonnegative property, we find a ground state solution for the above problem with the help of Nehari manifold.
Line structured light (LSL) measurement systems can obtain high accuracy profiles, but the overall clarity relies greatly on the sampling interval of the scanning process. Photometric stereo (PS), on ...the other hand, is sensitive to tiny features but has poor geometrical accuracy. Cooperative measurement with these two methods is an effective way to ensure precision and clarity results. In this paper, an LSL-PS cooperative measurement system is brought out. The calibration methods used in the LSL and PS measurement system are given. Then, a data fusion algorithm with adaptive weights is proposed, where an error function that contains the 3D point cloud matching error and normal vector error is established. The weights, which are based on the angles of adjacent normal vectors, are also added to the error function. Afterward, the fusion results can be obtained by solving linear equations. From the experimental results, it can be seen that the proposed method has the advantages of both the LSL and PS methods. The 3D reconstruction results have the merits of high accuracy and high clarity.
•A novel approach to P recovery from sewage sludge was studied by XRD and TGA–DSC.•High temperature and CaO could effectively promote transformation from NAIP to AP.•The AP percentage in total ...phosphorus reaches 99% at 950°C in sewage sludge ash.•Phosphorus components emerged during the thermal treatment was measurements.•The reactions between NAIP and CaO at different temperatures were concluded.
The recovery of phosphorus from incinerated sewage sludge ash (SSA) is assumed to be economical. Transformation from non-apatite inorganic phosphorus (NAIP) to apatite phosphorus (AP), which has a higher bioavailability and more extensive industrial applications, was studied at 750–950°C by sewage sludge incineration and model compound incineration with a calcium oxide (CaO) additive. Thermogravimetric differential scanning calorimetry analysis and X-ray diffraction measurements were used to analyze the reactions between NAIP with CaO and crystallized phases in SSA. High temperatures stimulated the volatilization of NAIP instead of AP. Sewage sludge incineration with CaO transformed NAIP into AP, and the percentage of AP from the total phosphorus reached 99% at 950°C. Aluminum phosphate reacted with CaO, forming Ca2P2O7 and Ca3(PO4)2 at 750–950°C. Reactions between iron phosphate and CaO occurred at lower temperatures, forming Ca(PO3)2 before reaching 850°C.
