bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimal scheduling of park electric and cooling system considering multi-energy synergy
Authors: Jia Yujian , Li Li , Sui Quan , Qin Changlong , Kan Changtao 
Published: January 2024

Abstract
The park’s electric refrigeration system exhibits complex coupling relationships and heterogeneous operational characteristics, making it difficult to achieve optimal operation. Therefore, a strategy for optimizing the park’s electric refrigeration system, considering the potential for mutual assistance from multiple energy sources, is proposed. Firstly, an introduction to the structure of the park’s electric refrigeration system is provided. Subsequently, operational constraints for the park’s units are established through quantitative analysis of the operational characteristics of systems such as the photovoltaic power generation system. Based on this, an optimization scheduling strategy for the park’s electric refrigeration system is proposed to minimize system operating costs. Finally, the model is transformed into a Mixed Integer Linear Programming (MILP) problem by employing linearization techniques. Simulation results demonstrate the effectiveness of the proposed strategy.
A novel ray method for the coking of n-decane in circular tubes with flexible cross-section area
Authors: Zhang Chen , Gao Hui , Zhao Jiajun , Wen Dongsheng 
Published: January 2024

Abstract
Coking of endothermic hydrocarbon fuels significantly deteriorates the efficiency of regenerative cooling for hypersonic airbreathing vehicles. A novel ray method based on dynamic mesh techniques is proposed to describe the coking behavior in a circular tube with a flexible cross-section area. This method can be used to identify metal and deposit coke efficiently, which promotes the applicability of the dynamic mesh method in flexible structures. The cooling performance of n-decane before and after coking is numerically simulated and compared. The deposition brings higher thermal risks by elevating the solid temperature. However, the deposition reduces the channel’s cross-sectional area and increases the flow speed, leading to decreased flow residence time. Because the suppressing effect from lower flow residence time outweighs the promotion effect from increased temperature, the n-decane conversion decreased after coking.
Numerical simulation and experimental application of a 300 MW boiler combustion system
Authors: Liu Huan , Wang Hongwu , Liu Wenjuan , Liu Xiaoguo , Shu Jin , Zhang Yubo , Cao Haojun , Du Jinsong , Ma Yichao , Niu Kun 
Published: January 2024

Abstract
In the actual operation of a 300 MW boiler, there are some problems such as unstable combustion, high combustible material of fly ash and slag, and large thermal deviation on both sides of steam. The Cooper method is used to divide the three parts of the furnace by a hexahedral structured grid, which can reduce the grid number and improve the numerical simulation calculation precision. The Realization k-ε turbulent model is used to simulate the gas-solid two-phase flow in the furnace before and after reconstruction. The boundary of the calculation model adopts the actual operating parameters, and the numerical calculation adopts the three-dimensional steady-state calculation - Simple algorithm. The conclusions are as follows: the amount of pulverized coal powder falling into the cold ash hopper is reduced from 0.077 kg/m3 before the reconstruction to 0.045 kg/m3 after the reconstruction, with a decrease of about 42%. The secondary air concentration arrangement in the lowest two layers strengthened the secondary air supporting capacity. The residence time of pulverized coal particles in the furnace is increased from 30.59 s before the reconstruction to 39.97 s after the reconstruction, and the time is extended by about 9.4 s, which is beneficial to the combustion of pulverized coal particles. The centralized arrangement of primary air in the lowest two layers is beneficial to the initial ignition and stable combustion of pulverized coal gas. The downdip of the tertiary air incidence angle reduces the rotational momentum of the tertiary airflow, and the increase of the rotational momentum of the over-fire air angle is conducive to weakening the residual rotation at the furnace outlet. After the implementation of the reconstruction measures, the boiler can be stably burned at 150 MW, the combustible material of fly ash and slag are reduced to the controllable range, the steam thermal deviation is significantly reduced, and the boiler operating parameters are stable.
Power prediction and operation scheduling strategy of pumped storage power station based on machine learning
Authors: Tian Guang , Chen Chunsheng , Yang Lei , Yang Yang 
Published: January 2024

Abstract
The power of a pumped storage power station depends on the water level of the upstream reservoir and the downstream demand. The change in water level is related to rainfall, evaporation, river inflow, and other factors. Therefore, it is difficult to accurately predict the generating power and its scheduling. A machine learning-based power prediction and operation scheduling strategy for pumped storage power plants is proposed. The relationship between the forgetting gate, input gate, output gate, and memory unit of the long and short-term memory network is redefined. The activation function between input data and output data is constantly updated, which is used as the power prediction function of the pumped storage power station. The power prediction model is built. The operation scheduling process of the pumped storage power station is designed. The operation scheduling of the pumped storage power station is completed by using the daily scheduling time scale. The experimental results show that the research method can accurately predict the power generation of a pumped storage power station. The power generation is more balanced, and the power scheduling effect is better under the application of the research method.
Drilling technology of long horizontal section of shale oil
Authors: Zhang Zengbao , Lv Jianbo , Zhu Xiaoming , Zhu Jing 
Published: January 2024

Abstract
As an important supplementary energy resource, shale oil has attracted worldwide attention due to its huge reserves and rich comprehensive utilization levels. The world is rich in oil shale resources. According to statistics, if the oil shale of 33 countries and regions in the world is converted into shale oil, it will be about 400 billion tons. With the continuous maturity of horizontal well drilling and completion technology in shale oil gas reservoirs and the application of other advanced technologies in horizontal well drilling, mature shale oil gas drilling and completion matching technologies have gradually formed at home and abroad after years of research and drilling practice. In terms of measurement technology, China has been able to produce single-point, multi-point, wired, wireless inclinometers and MWD measuring instruments while drilling and has mastered their usage methods. In terms of control technology, various specifications and types of fixed-angle and ground-adjustable curved shell screw drilling tools have been produced in China. Large deformation analysis and trajectory prediction methods for lower drilling tool assemblies have been completed. Various lower drilling tool assemblies and their usage processes required for wellbore trajectory control have been improved and mastered. In the construction of inclined and horizontal sections, attention should be paid to the response law of drilling tool combinations to drilling pressure in different formations, especially the response law of composite drilling. Reasonable drilling tool combinations should be selected for the control of wellbore trajectory in stable and horizontal sections, especially in the long stable and horizontal sections.
Discoloration of RF antenna coil surface after long-term operation of J-PARC ion source
Authors: Shibata T. , Shinto K. , Nanmo K. , Ohkoshi K. , Ikegami K. , Oguri H. , Ishida M. , Wada M. 
Published: January 2024

Abstract
In J-PARC (Japan Proton Accelerator Research Complex) center, the continuous operation
period of the Radio Frequency (RF) negative hydrogen ion (H−) source equipped with
the internal RF antenna coil is extended step by step in these 6–7 years for the goal to supply
stable beam during the entire period of J-PARC user operation each year. In 2022, the continuous
ion source operation for 4,001 hours (5.5 months) was achieved with 60 mA H− beam
current at the ion source exit, 25 Hz repetition, mainly 500 μs beam pulse width, and 25 kW
RF power injection. As the lifetime of the RF ion source is mainly limited by the deterioration of
the enamel coating on the RF antenna coil, a detailed evaluation of the antenna surface is
required to ensure the feasibility of the further extension of the operation period. In the
present study, surface discoloration on the RF antenna coil observed after 5 months of operation
is investigated by the application of a digital microscope and SEM/EDS analyses. The EDS analyses
show that depositions of the sputtered stainless steel elements and the injected cesium are the
most possible candidates for impurities on the enamel coating. The dimension measurements of the
RF antenna thickness before and after the long-term operation also support the assumption that the
discoloration is due to the deposited elements and hence insulation of the RF antenna coil by
enamel coating is maintained. Possible mechanisms leading to antenna deterioration starting from
element depositions on the antenna coating are also discussed in the summary part of this
manuscript.
T1-weighted MRI of targeting atherosclerotic plaque based on CD40 expression on engulfed USPIO’s cell surface
Authors: Huang Chen , Huang Wentao , Meng Yixuan , Zhou Chengqian , Wang Xiaozhuan , Zhang Chunyu , Tian Yuzhen , Wei Wei , Li Yongsheng , Zhou Quan , Chen Wenli , Tang Yukuan 
Published: January 2024

Abstract
Atherosclerosis is a chronic inflammatory disease characterized by the accumulation of cholesterol within the arterial wall. Its progression can be monitored via magnetic resonance imaging (MRI). Ultrasmall Superparamagnetic Particles of Iron Oxide (USPIO) (<5 nm) have been employed as T1 contrast agents for MRI applications. In this study, we synthesized USPIO with an average surface carboxylation of approximately 5.28 nm and a zeta potential of −47.8 mV. These particles were phagocytosed by mouse aortic endothelial cells (USPIO-MAECs) and endothelial progenitor cells (USPIO-EPCs), suggesting that they can be utilized as potential contrast agent and delivery vehicle for the early detection of atherosclerosis. However, the mechanism by which this contrast agent is delivered to the plaque remains undetermined. Our results demonstrated that with increasing USPIO concentration during 10–100 μg ml−1, consistent change appeared in signal enhancement on T1-weighted MRI. Similarly, T1-weighted MRI of MAECs and EPCs treated with these concentrations exhibited a regular change in signal enhancement. Prussian blue staining of USPIO revealed substantial absorption into MAECs and EPCs after treatment with 50 μg ml−1 USPIO for 24 h. The iron content in USPIO-EPCs was much higher (5 pg Fe/cell) than in USPIO-MAECs (0.8 pg Fe/cell). In order to substantiate our hypothesis that CD40 protein on the cell surface facilitates migration towards inflammatory cells, we utilized AuNPs-PEI (gold nanoparticles-polyethylenimine) carrying siRNACD40 to knockout CD40 expression in MAECs. It has been documented that gold nanoparticle-oligonucleotide complexes could be employed as intracellular gene regulation agents for the control of protein level in cells. Our results confirmed that macrophages are more likely to bind to MAECs treated with AuNPs-PEI-siRNANC (control) for 72 h than to MAECs treated with AuNPs-PEI-siRNACD40 (reduced CD40 expression), thus confirming CD40 targeting at the cellular level. When USPIO-MAECs and MAECs (control) were delivered to mice (high-fat-fed) via tail vein injection respectively, we observed a higher iron accumulation in plaques on blood vessels in high-fat-fed mice treated with USPIO-MAECs. We also demonstrated that USPIO-EPCs, when delivered to high-fat-fed mice via tail vein injection, could indeed label plaques by generating higher T1-weighted MRI signals 72 h post injection compared to controls (PBS, USPIO and EPCs alone). In conclusion, we synthesized a USPIO suitable for T1-weighted MRI. Our results have confirmed separately at the cellular and tissue and in vivo level, that USPIO-MAECs or USPIO-EPCs are more accessible to atherosclerotic plaques in a mouse model. Furthermore, the high expression of CD40 on the cell surface is a key factor for targeting and USPIO-EPCs may have potential therapeutic effects.
Enhancing the therapeutic potential of curcumin: a novel nanoformulation for targeted anticancer therapy to colorectal cancer with reduced miR20a and miR21 expression
Authors: Atwan Qusay S , Al-Ogaidi Israa 
Published: January 2024

Abstract
Curcumin (Cur) possesses remarkable pharmacological properties, including cardioprotective, neuroprotective, antimicrobial, and anticancer activities. However, the utilization of Cur in pharmaceuticals faces constraints owing to its inadequate water solubility and limited bioavailability. To overcome these hurdles, there has been notable focus on exploring innovative formulations, with nanobiotechnology emerging as a promising avenue to enhance the therapeutic effectiveness of these complex compounds. We report a novel safe, effective method for improving the incorporation of anticancer curcumin to induce apoptosis by reducing the expression levels of miR20a and miR21. The established method features three aspects that, to our knowledge, have not been formally verified: (1) use of a novel formula to incorporate curcumin, (2) use of all biocompatible biodegradable materials to produce this formula without leaving harmful residues, and (3) an incorporation process at temperatures of approximately 50 °C. The formula was prepared from lecithin (LE), and chitosan (CH) with an eco-friendly emulsifying agent and olive oil as the curcumin solvent. The formula was converted to nanoscale through ultrasonication and probe sonication at a frequency of 20 kHz. Transmission electron microscopy showed that the nano formula was spherical in shape with sizes ranging between 49.7 nm in diameter and negative zeta potentials ranging from 28 to 34 mV. Primers miR20a and miR21 were designed for molecular studies. Nearly complete curcumin with an encapsulation efficiency of 91.1% was established using a straight-line equation. The nano formula incorporated with curcumin was used to prepare formulations that exhibited anticancer activities. The apoptosis pathway in cancer cells was activated by the minimum inhibitory concentration of the nano formula. These findings suggest the potential of this nanoformulation as an effective and selective cancer treatment that does not affect the normal cells.
Large deviations and phase transitions in spectral linear statistics of Gaussian random matrices
Authors: Valov Alexander , Meerson Baruch , Sasorov Pavel V 
Published: January 2024

Abstract
We evaluate, in the large-N limit, the complete probability distribution

P

(
A
,
m
)

of the values A of the sum

∑

i
=
1

N

|

λ
i

|

m

, where λ

i
(

i
=
1
,
2
,
…
,
N

) are the eigenvalues of a Gaussian random matrix, and m is a positive real number. Combining the Coulomb gas method with numerical simulations using a matrix variant of the Wang–Landau algorithm, we found that, in the limit of

N
→
∞

, the rate function of

P

(
A
,
m
)

exhibits phase transitions of different characters. The phase diagram of the system on the (A, m) plane is surprisingly rich, as it includes three regions: (i) a region with a single-interval support of the optimal spectrum of eigenvalues, (ii) a region emerging for m < 2 where the optimal spectrum splits into two separate intervals, and (iii) a region emerging for m > 2 where the maximum or minimum eigenvalue ‘evaporates’ from the rest of eigenvalues and dominates the statistics of A. The phase transition between regions (i) and (iii) is of second order. Analytical arguments and numerical simulations strongly suggest that the phase transition between regions (i) and (ii) is of (in general) fractional order

p
=
1
+
1

/

|

m
−
1

|

, where

0
<
m
<
2

. The transition becomes of infinite order in the special case of m = 1, where we provide a more complete analytical and numerical description. Remarkably, the transition between regions (i) and (ii) for

m
⩽
1

and the transition between regions (i) and (iii) for m > 2 occur at the ground state of the Coulomb gas which corresponds to the Wigner’s semicircular distribution.
Exploring acoustic properties of banana fiber composites with elastomeric filler through a computational approach
Authors: Jayaraman Prajwal , Pai Anand , Rodriguez-Millan Marcos , Shenoy B Satish , K N Chethan , Hegde Sriharsha 
Published: January 2024

Abstract
In recent years, there has been a significant increase in the use of natural fibers as reinforcements in composites. This trend is mainly driven by their eco-friendly nature and wide availability. The objective of this research is to explore the extensive potential of combining Banana Fiber with Tyre Rubber Particles (TRP) as elastomeric fillers in natural fiber composites, focusing primarily on their applications in the automotive and aeronautical industries, particularly in terms of acoustic response. The composite sequences were named as NFC-I to NFC-V, where NFC represented Natural Fiber Composites. To thoroughly investigate the acoustic properties of these innovative composites, experimental analysis on the impedance tube was conducted along with numerical simulations on the Ansys Harmonic Acoustics® module with Transmission Loss (TL) as the key parameter. An orthotropic material model based on the chopped fiber RVE (Representative Volume Element) was developed on the Ansys 2022 R1® Material Designer Module which could be deemed as the novelty of the current work. From the results, it was seen that within the designated frequency bands, specifically the low (67–400 Hz), medium (400–1900 Hz), and high (1900–6300 Hz) ranges, the NFC-4 (15 wt% of TRP) composite consistently demonstrated the lowest average TL values. Conversely, NFC-3 (27 wt% of TRP) consistently showcased the highest TL values, reaching a peak of 27.13 dB in the low-frequency range and 46.73 dB in the high-frequency range. The results obtained from the impedance tube experiments align remarkably well with the numerical simulation outputs, demonstrating the reliability of the numerical model in estimating the transmission loss of composite laminatesa crucial parameter for evaluating acoustic performance.
Electric field control of magnetization reversal in FeGa/PMN-PT thin films
Authors: Pradhan Gajanan , Celegato Federica , Magni Alessandro , Coisson Marco , Barrera Gabriele , Rizzi Paola , Tiberto Paola 
Published: January 2024

Abstract
Artificial magnetoelectric materials possess huge potential to be utilized in the development of energy efficient spintronic devices. In the past decade, the search for a good ferromagnetic/ferroelectric combination having the ability to create high magnetoelectric coupling, created new insights and also new challenges. In this report, the magnetoelectric effect is studied in the FeGa/PMN-PT(001) multiferroic heterostructures in the presence of electric fields via strain-mediated effects. The formation of magnetic anisotropy in FeGa is observed after changing the polarization of PMN-PT to out-of-plane orientations. The magnetic domain structures forming during the magnetization reversal were studied in compressive, tensile and remanent strained states. The changes in the magnetic properties were reversible after each cycling of the electric field polarity, hence creating a non-volatile system. The control of magnetization switching sustained by an ON–OFF electric field makes our multiferroic heterostructure suitable for application in low-power magnetoelectric based memory applications.
An improved solution for total least squares collocation in the EIV-model with random effects
Authors: Wang Wei , Luo Tao , Lv Zhipeng , Miao Xuece , Qi Zhijun 
Published: January 2024

Abstract
The total least squares (TLS) method within the Errors-In-Variables (EIV) model has been comprehensively investigated in measurement and its relevant fields. However, when prior information is considered, existing solutions in the EIV model with random effects (EIV-REM) have many shortcomings, which limit the application of this approach. We have developed the total least squares collocation (TLSC) solution based on general adjustment, where prior information is added to the functional model in the form of pseudo-observations. The accuracy of the estimated parameters is evaluated, and our TLSC solution is converted into a recursive form. The proposed methodology is applied to a 3D datum transformation and an autoregression model. The results for the datum transformation show that our proposed TLSC solution provides more precise estimates than the traditional least squares (LS) and TLS methods. The results for the autoregression model show that TLSC yields similar performance to the batch solution of TLS, but has advantages in terms of computational complexity.
Gay’s the Word
Authors: Brooke Stephen 
Published: January 2024

Abstract
In April 1984, Customs and Excise raided the gay and lesbian bookshop Gay’s the Word. In the raid hundreds of books were seized, on the allegation that they were obscene. This set off an important public and legal battle around gay and lesbian rights. Gay’s the Word rallied public support to oppose Customs and Excise and insist that works dealing with gay and lesbian subjects were not obscene. Against this, Customs and Excise relied upon arguments that make clear the tight boundaries around gay and lesbian culture. This chapter is an exploration of gay and lesbian rights and the policing of sexuality.
Activatable 19F MRI probe for detection of α-amylase activity
Authors: Konishi Yuki , Otera Yuya , Minoshima Masafumi , Kikuchi Kazuya 
Published: January 2024

Abstract
α-Amylase is an endo-type glycoside hydrolase and has drawn attention as a biomarker of various diseases. However, current detection methods rely on colorimetric and fluorometric approaches, which limits imaging in deep tissues. In this research, we developed an activatable probe, Tfb-G6-Gd, for detecting α-amylase using 19F MRI. In the presence of α-amylase, the 19F MRI signal of Tfb-G6-Gd increased by attenuation of paramagnetic relaxation enhancement effect. This probe showed a switching ability depending on α-amylase activity with high specificity.
Determination of Whole Molecular of Thermostable Direct Hemolysins in Milk Powder by HPLC-ESI-TOF
Authors: Li Hong-na , Wang Tao , Kang Zhao-di , Yang Yan-ge , Li Tao , Yuan Fei 
Published: January 2024

Abstract
Although Vibrio parahaemolyticus (V. parahaemolyticus) is a pathogen frequently found in seafood, there is a possibility of its presence in other foods, such as dairy products. The main virulence factors of V. parahaemolyticus are thermostable direct hemolysins (TDHs) which are lethal toxins, so it is necessary to establish qualitative and quantitative methods for determining TDHs. HPLC-ESI-TOF was employed to establish a method for identifying TDHs. The identification and quantification ions of TDHs were confirmed by HPLC-ESI-TOF. The method was developed for detecting TDHs in milk powder using HPLC-ESI-TOF in this paper, and limits of detection (were between 0.20 and 0.40 mg/kg, limits of quantitation were between 0.5 and 1.0 mg/kg and recoveries of all TDHs were between from 78% to 94% with relative standard deviation lower than 10%. This research will provide a reference for developing methods of HPLC-MS/MS to detect TDHs in food samples, which can provide a tool for the government to monitor TDHs contamination in foods.