bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research and Application of Balanced Rise of Concrete High Arch Dam
Authors: Junhong Zhang 
Published: October 2024

AbstractIn the construction of domestic concrete high arch dams, there have been varying degrees of situations where the height difference between adjacent dam sections and the entire dam exceeds the design indicators. Due to the complex structure, large scale, high temperature control requirements for the dam body concrete, strict control requirements for the height difference between adjacent dam sections and the entire dam body, and complex boundary conditions, the rising speed of the bank slope dam section, non-orifice dam section, and orifice dam section is not consistent during the construction process, resulting in uneven rise of the dam concrete construction. In response to this situation, the resources need to be fully considered according to the simulated schedule of dam concrete construction. In this research, the finite element, PKPM and other software were used to study technical measures for rapid rise of the bank slope dam section and orifice dam section, and achieved the goal of balanced rise of the Baihetan concrete arch dam.
Assimilating FY-4A AGRI Data Based on a WRF-GSI NWP System and Its Impact on Precipitation Forecasts
Authors: Jian Chen , Dengyu Yang , Jianping Wang , Nianhong Cao , Zhaokang Tang 
Published: October 2024

AbstractHydropower and renewable energy prediction require accurate precipitation forecast as fundamental, which is computed from Numerical Weather Forecast (NWP) models. Assimilating satellite data has become an important method to improve NWP model results, especially geostationary meteorological satellites (GMS) that can provide continuous observation information of weather systems. The Advanced Geostationary Radiance Imager (AGRI) onboard China’s new generation GMS, FY-4A, can provide observations of temperature and water vapor covering the land and surrounding sea areas. Using a newly established WRF-GSI NWP system, this paper analyzes the impact of AGRI data assimilation on several precipitation case forecasts in China. First, channel selection of AGRI data, along with data thinning and observation error adjustment are performed. Then, four experiments of precipitation case forecasts are conducted and compared with each other. The results show that the influence of assimilating conventional data is mainly located in the inland area of China, while AGRI data can provide more observation information in the offshore ocean area. AGRI data assimilation can significantly improve the accuracy of atmospheric temperature and water vapor at a height of 500 hPa in the coastal area of the model, which further enhanced precipitation forecasts. The improvement of ETS score for heavy precipitation is most obvious, the biggest improvement can be up to 60% in the 15 July 2021 case, indicating the addition of AGRI data can ensure the improvement of the ETS scores of heavy precipitation that larger than 50 mm. The results prove that the AGRI data has added value to precipitation forecasts in the WRF-GSI NWP system, the improved forecast accuracy has great potential on hydrological forecasts, supporting the development of related hydropower applications.
Role of the Hydro-Solar Hybrid Operation Mode in the Novel Power System
Authors: Du Haibo , Li Hongyong , Liu Kai , Chen Ruixian , Cao Ying 
Published: October 2024

AbstractCurrently, photovoltaic technology is rapidly advancing, and competition in the industry is becoming increasingly intense. The decreasing prices of silicon wafers and modules have led to a growing demand for photovoltaic installations. The installed capacity and installed share of photovoltaics in power systems are increasing, promoting the transformation of traditional power systems to novel power systems; this maximizes the consumption of new energy as the main task and is supported by source-network-load-storage interactions and multi-energy complementation. Using the Manwan hydro-solar hybrid base as a model, the role of hydro-solar hybrids in source-network-load-storage interactions and multi-energy complementation in novel power systems are discussed.
Numerical Analysis Calculations of Ductile Concrete Gravity Dams Under Seismic Action
Authors: Fang Wei , He Jingjing , Yu Yang , Hao Rusheng , Guo Yan 
Published: October 2024

AbstractFinite element analysis was conducted on the stress, vertical displacement, and horizontal displacement of ordinary concrete and ductile concrete gravity dams under different working conditions. The results show that: with the decrease of the height of the dam, the stresses on the two concrete dams gradually increase, and the vertical displacements show a decreasing trend during the operation period. Under the effect of earthquakes, the maximum stress of the two kinds of concrete gravity dams appears at the weak point of the dam body. The maximum stress of the normal water level and the falling water level of the ordinary concrete dam reach 9.91 MPa and 9.85 MPa respectively. The maximum stress of two types of concrete dams under seismic conditions is approximately 4 times that of the operation period. Under different working conditions, the maximum stress and displacement of the ordinary concrete are always smaller than that of ductile concrete.
Analysis of Meteorological Situation in Different Regions and Its Impact on Power Generation of Different Types of Solar Modules
Authors: He Fengqin , Yang Qi , Ding Xuelin , Lei Weniun 
Published: October 2024

AbstractThis paper starts from the key factors affecting photovoltaic power generation and first studies the lighting characteristics of different regions. It then conducts an analysis of the characteristics of the massive spectral data collected, determines the extraction method of spectral data, and calculates the difference in short-circuit current of photovoltaic modules due to spectral differences for specific regions. This has guiding significance for further research on the differences in the operation of novel and efficient photovoltaic modules in different regions.
Comparison of Ecological Value Before and After the Construction of Hydraulic Engineering Projects: A Case Study of Lianhu Reservoir
Authors: Qu Zelong , Li Jianfeng , Yang Guofu 
Published: October 2024

AbstractHydraulic engineering projects provide essential functions and services, including flood regulation, hydroelectric power generation, and agricultural irrigation. Additionally, they offer benefits such as navigation, water purification, recreational opportunities, and biodiversity maintenance for upstream and downstream regions. To comprehensively describe the overall functioning of hydraulic engineering as an ecosystem, evaluate its contributions to human well-being, assess its support for economic and social development, and understand its ecological linkages across regions, it is essential to scientifically account for the comprehensive benefits of these projects. This study uses the Lianhu Reservoir in Lishui, Zhejiang Province, as a case study to assess the Gross Ecosystem Product (GEP) before and after the construction of the hydraulic engineering project. The results show that before the construction of the Lianhu Reservoir (in 2021), the total GEP within the construction area was 206 million yuan. The value of regulating services was 197 million yuan, accounting for 95.6% of the total GEP, with climate regulation and flood control contributing 175 million yuan and 21 million yuan, respectively. The value of provisioning services was 9.06 million yuan, accounting for 4.4% of the total GEP. After the construction of the Lianhu Reservoir, the total GEP within the construction area increased to 1.42 billion yuan. The value of regulating services was 781 million yuan, accounting for 55.0% of the total GEP, with flood control and climate regulation contributing 480 million yuan and 297 million yuan, respectively. The value of cultural services was 498 million yuan, accounting for 35.1% of the total GEP, while the value of provisioning services was 141 million yuan, accounting for 9.9% of the total GEP. The results indicate that compared to the pre-construction period, the GEP after the construction of the Lianhu Reservoir increased by 1.21 billion yuan, representing a 588% increase. Except for the services of agricultural product supply, carbon sequestration and oxygen release, and air purification, all other service items were enhanced.
Research on the Deflection Deformation of Photovoltaic Modules Caused by Low-Temperature Environment
Authors: Chunxing Lian , Shusheng Wang , Zhenyu Sun 
Published: October 2024

AbstractThe purpose of this study is to conduct a preliminary study on the flexural deformation of photovoltaic modules in low-temperature environments. By analyzing the characteristics and influencing mechanisms of flexural deformation, theoretical basis and technical guidance are provided for the design, manufacturing, and application of photovoltaic modules, and the performance and reliability of photovoltaic modules in low-temperature environments are improved. We have developed a warping deformation testing plan for photovoltaic modules under different temperature environments using a true type test method, and measured and analyzed the warping deformation of photovoltaic modules under different temperature environments. The results indicate that low-temperature environment is the main cause of deflection deformation of photovoltaic modules, and the strength of the frame structure and materials also have a certain impact on the degree of deformation. This study can provide assurance for the long-term operation of photovoltaic modules, reduce maintenance costs and failure rates of photovoltaic systems.
Water Level Calculation and Influencing Factors of Single-Step Locks with Water-Saving Basins
Authors: Xu Duo , Li Zhonghua , An Jianfeng 
Published: October 2024

AbstractDuring the water level design process of lock with water saving basins (WSBs), it's an important part that to determine the water level and head of the WSB, and there are many influencing factors in the process. This paper derives and establishes calculation formulas for evaluating the water level and the water head of the single-step lock with WSBs, which integrates the total head of ship lock, the upper and lower stream water level variation, the number of the WSB levels and area of the WSB, and the remaining head. On the basis of formulas, the influence of factors such as the upper and lower stream water level variation, the number of the WSB levels and the area of the WSB on the water level and the water head of the WSB are analyzed, and the control conditions of the integrated and decentralized arrangement of WSBs and water-saving rates of replenishment and overflow operations are calculated. The results show that when total head of the lock is constant, head of the WSB decreases with the increase of the area of the WSB and the number of the WSB levels, and the increase of the number of the WSB levels is greater than the increase of the area of the WSB; when the number of levels and area of the WSB increase to a certain level, the reduction of the water head of the WSB becomes slow; the highest and lowest water levels of the WSB are controlled by the maximum variation of the downstream and upstream water levels respectively. Finally, the water levels and the water head of difference WSB schemes are calculated and compared in a 60m single-level ship lock, and a reasonable water level scheme of WSB is proposed.
Influence of Water Molecules on the Interfacial Structures and Energy Storage Behavior of Ionic Liquid Electrolytes
Authors: Xu Chenxuan , Qian Xu , Gu Xingxing , Yang Junjie 
Published: October 2024

AbstractIonic liquids have been considered as promising electrolytes for supercapacitors due to the wide electrochemical stability window. However, water molecules inevitably damage the electrochemical properties of ionic liquids due to the hygroscopic property. This paper reveals the effect of water molecules on the interfacial structure and energy storage performance of ionic liquids using the atomistic simulations. Unlike neat ionic liquids, the Helmholtz region for humid ionic liquids is mainly composed of BMI cations and water molecules. Importantly, water molecules primarily accumulate in the buffer region between BMI cation and graphene electrode, especially at the high negative charges, which is the crucial factor to induce the hydrogen evolution reactions for the decreased electrochemical stability window. More interestingly, the dielectric properties of water molecules in the buffer layer are beneficial for lowering the electric potentials for higher capacitive performance. The differential capacitance of [BMI+][BF4−]/H2O electrolyte exhibits a bell-shaped curve with a maximum value of ~5.0 F/cm2 at 0.75 V. The revealed insights are important for understanding the water effect in ionic liquid-based supercapacitor energy storage.
Scaled Global Operators and Fueter Variables on Non-zero Scaled Hypercomplex Numbers
Authors: Alpay Daniel , Cho Ilwoo , Vajiac Mihaela 
Published: October 2024

AbstractIn this paper we describe the rise of global operators in the scaled quaternionic case, an important extension from the quaternionic case to the family of scaled hypercomplex numbers $$\mathbb {H}_t,\, t\in \mathbb {R}^*$$

H
t

,

t
∈

R

∗

, of which the $$\mathbb {H}_{-1}=\mathbb {H}$$

H

-
1

=
H

is the space of quaternions and $$\mathbb {H}_{1}$$

H
1

is the space of split quaternions. We also describe the scaled Fueter-type variables associated to these operators, developing a coherent theory in this field. We use these types of variables to build different types of function spaces on $$\mathbb {H}_t$$

H
t

. Counterparts of the Hardy space and of the Arveson space are also introduced and studied in the present setting. The two different adjoints in the scaled hypercomplex numbers lead to two parallel cases in each instance. Finally we introduce and study the notion of rational function.
On Isolated Singularities for the Stationary Navier–Stokes System
Authors: Tartaglione Alfonsina 
Published: October 2024

AbstractThe classical problem of removable singularities is considered for solutions to the stationary Navier–Stokes system in dimension $$n\ge 3$$

n
≥
3

and an old theorem of Shapiro (TAMS 187:335–363, 1974) is recovered and extended to solutions in a half ball vanishing on the flat boundary. Moreover, for $$n=4$$

n
=
4

it is proved that there are not distributional solutions, smooth away from the singularity and such that $$u(x)=O(|x|^{-1})$$

u

(
x
)

=
O
(
|
x

|

-
1

)

.
Psychotherapeutische Interventionen bei Burnout – Ein Umbrella-Review und Impulse für die Therapie
Authors: Kern Sarah , Jerg-Bretzke Lucia , Beschoner Petra 
Published: October 2024

Zusammenfassung
Hintergrund
Burnout stellt keine eigenständige medizinische Diagnose nach ICD-11 dar, jedoch leiden laut Studienlage viele Menschen daran. Dies hat auch erhebliche volkswirtschaftliche und gesundheitspolitische Konsequenzen, da Burnout oftmals mit Arbeitsunfähigkeit und erheblichen Folgeerkrankungen einhergeht. Diese Arbeit soll einen Überblick über bereits angewandte und evaluierte Therapieansätze für Burnout vorstellen und zusätzlich aufzeigen, in welchem Bereich vielversprechende, jedoch noch wenig erforschte therapeutische Unterstützungsmöglichkeiten für Betroffene liegen.

Methoden
Systematische Literaturrecherche von 2010 bis 2024 in PubMed und Google Scholar für ein Umbrella-Review. Suchbegriffe waren: „burnout“, „therapy“ und „intervention“, kombiniert mit „systematic review“, „meta-analysis.“ Insgesamt 10 systematische Reviews bzw. Metaanalysen entsprachen den Einschlusskriterien.

Ergebnisse
In 5 Reviews bzw. Metaanalysen wurde bei den untersuchten Therapieansätzen eine spezielle Berufsgruppe fokussiert (Pflegefachkräfte, Ärzte und Lehrer), die anderen bezogen sich auf Studenten oder verschiedene Personengruppen. In 7 Arbeiten wurden die Effekte von Achtsamkeitstraining auf Burnout gezeigt. Für kognitive Verhaltenstherapie (KVT) wurde Effekte in 4 Arbeiten nachgewiesen. Als wirksam erwiesen sich auch die Akzeptanz- und Commitment-Therapie (ACT) sowie die Rational-Emotive-Therapie (RET).

Diskussion
Es muss noch erforscht werden, ob etablierte Gedanken- und Verhaltensmuster durch die genannten Ansätze der Burnout-Therapie auch langfristig verändert werden. Der berufliche Kontext sollte mehr Beachtung finden. Hilfreich erscheinen hier ressourcenorientierte Ansätze, die Aspekte wie Optimismus, Kontrollerleben, Selbstwirksamkeit und Selbstakzeptanz einbeziehen.
Pirfenidone mitigates demyelination and electrophysiological alterations in multiple sclerosis: Targeting NF-κB, sirt1, and neurotrophic genes
Authors: Abo-Elsoud Reda A. A. , Ali Eman A. , Al-Gholam Marwa A. , Rizk Mohamed S. , Elseadawy Rasha S. A. , Ameen Omnia 
Published: October 2024

AbstractMultiple sclerosis (MS) is a demyelinating disease affecting the central nervous system associated with progressive neurodegeneration. Pirfenidone (Pir) is a well-known antifibrotic agent; however, Pir’s function in MS is little explored. We evaluated the neuroprotective effects of Pir in MS and its possible underlying mechanisms. Forty male Swiss mice were divided equally into control, cuprizone (CPZ), Pir, and CPZ + Pir groups. Assessment of motor function was conducted using neurobehavioral tests, EMG, and nerve conduction velocity (NCV). Mice’s brains were extracted to measure oxidative stress, neuroinflammatory markers, and the expression of neurotrophic genes. The corpus callosum and the sciatic nerve were subjected to histopathological and immunohistochemical studies. The CPZ group was associated with significant reductions in muscle power, frequency of contraction, sciatic NCV, SOD, IL-10, SIRT1, NGF, and neuregulin-1. Significant increases in MDA, TNF-α, INF-γ, IL-17, TGF-β, and NF-κB were also detected. Multiple areas of partially demyelinated nerve fibers in the corpus callosum, the loss of oligodendrocyte nuclei, and increased microglia and astrocytes were also observed. The sciatic nerve revealed partial demyelination with significantly reduced myelin basic protein (MBP) expression. Pir significantly restored motor function, demyelination, and neurodegenerative changes induced by CPZ. Besides the antifibrotic action of Pir, we concluded that it improves motor function in MS by alleviating the demyelinating process and neurodegeneration. Its potential anti-inflammatory, antioxidant, and antifibrotic properties could be contributing factors. These effects could be mediated by modulating the NF-κB, SIRT1, NGF, and neuregulin-1 pathways. Pir is a promising agent for treating MS.
PET/CT imaging of differentiated and medullary thyroid carcinoma using the novel SSTR-targeting peptide [18F]SiTATE – first clinical experiences
Authors: Kunte Sophie C. , Wenter Vera , Toms Johannes , Lindner Simon , Unterrainer Marcus , Eilsberger Friederike , Jurkschat Klaus , Wängler Carmen , Wängler Björn , Schirrmacher Ralf , Tiling Maximilian W. , Sheikh Gabriel T. , Mehrens Dirk , Brendel Matthias , Rübenthaler Johannes , Auernhammer Christoph J. , Spitzweg Christine , Unterrainer Lena M. , Holzgreve Adrien 
Published: October 2024

Abstract

Purpose
The novel 18F-labeled somatostatin receptor (SSTR)-directed radiotracer [18F]SiTATE demonstrated promising results for the imaging of various SSTR-expressing tumor types. Although thyroid carcinomas (TC) express SSTR, data on [18F]SiTATE PET/CT imaging in TC are lacking. This study explores the use of [18F]SiTATE PET/CT in a patient cohort with histologically proven TC.

Methods
As part of a prospective observational study at a single tertiary cancer center, 21 patients with TC (10 medullary (MTC) and 11 differentiated (DTC)) who underwent at least one [18F]SiTATE PET/CT were included (37 scans in total). Mean SUVmax and SUVmean of tumoral lesions, mean total-tumor-volume (TTV), and whole-body (WB)-SUVmax and WB-SUVmean on PET with their standard deviations (SDs) were determined. PET parameters were correlated to clinical parameters including tumor marker levels (thyroglobulin for DTC, calcitonin for MTC).

Results
89 lesions were included in the analysis. Metastases were localized in the bone, lymph nodes, lung, soft tissue, and thyroid bed. Osseous (31 lesions; SUVmax 8.6 ± 8.0; SUVmean 5.8 ± 5.4) and nodal (37 lesions; SUVmax 8.7 ± 7.8; SUVmean 5.7 ± 5.4) metastases showed the highest uptake. The MTC disease burden on PET significantly correlated with the calcitonin tumor marker level (e.g., TTV: r = 0.771, r2 = 0.594, p = 0.002). For DTC, no such correlation was present.

Conclusion
Our data demonstrate high feasibility of [18F]SiTATE PET/CT in a small cohort of patients with MTC and DTC. The use of [18F]SiTATE may overcome logistical disadvantages of 68Ga-based tracers and facilitate SSTR-targeted PET/CT imaging of thyroid carcinoma.
High pressure and high temperature Brillouin scattering measurements of pyrope single crystals using flexible CO2 laser heating systems
Authors: Kurnosov A. , Criniti G. , Boffa Ballaran T. , Marquardt H. , Frost D. J. 
Published: October 2024

AbstractSingle-crystal Brillouin scattering measurements are important for interpreting seismic velocities within the Earth and other planetary interiors. These measurements are rare, however, at temperatures above 1000 K, due to the fact that the transparent samples cannot be heated by common laser heating systems operating at a wavelength on the order of 1 μm. Here we present Brillouin scattering data on pyrope collected at pressures up to 23.8 GPa and temperatures between 850 and 1900 K using a novel CO2 laser heating system confined in either a flexible hollow silica waveguide or an articulated arm with mirrors mounted in each junction to direct the laser to the exit point. Pyrope has been chosen because it has been extensively studied at high pressures and moderate temperatures and therefore it is an excellent sample for bench-marking the CO2 laser heating system. The new high-temperature velocity data collected in this study allow the room pressure thermal parameters of pyrope to be constrained more tightly, resulting in values that reproduce the temperature dependence of the unit-cell volume of pyrope measured in recent studies at ambient pressure. Aggregate wave velocities of pyrope calculated along an adiabat using the thermoelastic parameters determined in this study are larger than those obtained using published values, implying that velocities for many mantle components may be underestimated at mantle temperatures because high temperature experimental data are lacking.
Vine Copula-Based Classifiers with Applications
Authors: Şahin Özge , Joe Harry 
Published: October 2024

AbstractThe vine pair-copula construction can be used to fit flexible non-Gaussian multivariate distributions to a mix of continuous and discrete variables. With multiple classes, fitting univariate distributions and a vine to each class lead to posterior probabilities over classes that can be used for discriminant analysis. This is more flexible than methods with the Gaussian and/or independence assumptions, such as quadratic discriminant analysis and naive Bayes. Some variable selection methods are studied to accompany the vine copula-based classifier because unimportant variables can make discrimination worse. Simple numerical performance metrics cannot give a full picture of how well a classifier is doing. We introduce categorical prediction intervals and other summary measures to assess the difficulty of discriminating classes. Through extensive experiments on real data, we demonstrate the superior performance of our approaches compared to traditional discriminant analysis methods and random forests when features have different dependent structures for different classes.