bluuebunny/crossref_metadata_2025_split huggingface dataset:
Three-pressure prediction method of jointing well-seismic data in JT1 well area of Sichuan Basin in China
Authors: Zhao Hu , Zhang Zhong-wei , Zhao Rong-rong , Chen Wei , He Chang-long 
Published: July 2024

AbstractWith the high yield of many wells represented by Well JT1 in the Maokou Formation, has catalyzed a surge in exploration activities along the platform margin facies of the Maokou Formation in central Sichuan and further showed the significant exploration potential of the Maokou Formation in the northern slope. However, the fracture cave body of the Maokou Formation exhibits a high degree of development, strong longitudinal and horizontal heterogeneity, large formation pressure differences, and drilling events such as gas kicks and lost circulation occur frequently, which seriously affects the efficient implementation of drilling. Understanding the spatial distribution of the three-pressure in the formation can help better deal with and solve the above problems. Therefore, in order to help the safe, high-quality and rapid drilling of the Maokou Formation in the study area, and enhance the efficiency of oil and gas development, this paper explores the research on the prediction method of the three-pressure of jointing well-seismic data based on the geomechanical experimental data and the actual drilling data. In the process of prediction of pore pressure, this study found that the pore pressure and formation velocity in the study area have an exponential relationship. In order to enhance the applicability of the Filippone’s method in the study area and improve the prediction accuracy of pore pressure, the linear relationship between pore pressure and formation velocity in the Filippone’s method is modified to an exponential relationship, and a pore pressure prediction model suitable for the work area was established. Based on the Mohr–Coulomb criterion and Huang's model, the prediction models of collapse pressure and fracture pressure applicable to the study area were established, respectively. Then, the elastic parameters were obtained through pre-stack inversion, and the three-pressure bodies were calculated based on the elastic parameter bodies. The results indicate that: (1) The three-pressure prediction method of the jointing well-seismic data in this paper can predict the formation's longitudinal and transverse pressure anomaly zones in advance. (2) The Maokou Formation in the study area is characterized by abnormally high pressure, to balance the pressure of the high-ground formation, high-density drilling fluid is necessary. (3) The prediction results of three-pressure in this paper are highly consistent with the actual drilling engineering events, which verifies the reliability of the three-pressure prediction results presented in this study. The results of the study can provide a basis for decision-making in drilling geological design, such as the determination of drilling fluid density, the evaluation of borehole stability and other engineering problems that require support from three-pressure data.
Evaluation of biocementation of slope soil for erosion control with low-cost materials
Authors: Moqsud M. Azizul , Gochi Takuya 
Published: July 2024

AbstractIn this study, biocementation of slope soil was performed using low-cost, commercially available materials to create a nutrient solution with native Cytobacillus hornekea. The high cost of laboratory-grade materials and microbes for biocementation is one of the main obstacles to its popularity. However, the cost of biocementation has been reduced significantly without reducing the strength when low-cost materials were used instead of laboratory-grade materials in this study. Direct shear test results and SEM also proved the suitability of the low-cost biocementation. Artificial rainfall with an intensity of 50–60 mm/h resulted in soil erosion of around 10% and 2% without and with biocementation, respectively. The amount of produced calcium carbonate was around 3.9% while using the low-cost materials with native microbes which is quite comparable with the laboratory-grade materials (3.4%).
Unknown system dynamics estimator based control for sub‐synchronous oscillation of direct‐drive wind farms
Authors: Xi Xinze , Wang Min , Xing Chao , Tian Xincui , Wang Xian 
Published: July 2024

AbstractAiming at the problem of sub‐synchronous oscillations induced by direct‐drive wind farms with series‐compensated lines, this paper proposes an unknown system dynamics estimation‐based PI controller to achieve sub‐synchronous oscillation suppression. According to the mathematical model of the direct‐drive wind farm grid‐connected system, the relationship between the direct‐drive wind turbine grid‐side converter current inner‐loop PI controller and the sub‐synchronous components is first established. Secondly, the uncertain sub‐synchronous current components and voltage components in the series‐compensated lines of the direct‐drive wind farm are taken as the total disturbance, and an unknown system dynamic estimator‐based PI controller is designed by introducing the first‐order low‐pass filter operation. Then, the stability and convergence of the closed‐loop system are proved by Lyapunov theory. Finally, the Prony method is used to analyse the current signal output by the direct‐drive wind turbine, and the inherent characteristics of the negative damping of the SSO induced by the series‐compensated line of the direct‐driven wind farm are revealed. A comparative numerical simulation is carried out to demonstrate that the sub‐synchronous oscillations of the direct‐drive wind farm with series‐compensated lines can be suppressed under different operating conditions.
Receding horizon estimation for multi‐rate sampled data systems under component‐based event‐triggered mechanisms: Handling delayed and degraded measurements
Authors: Sun Zhenglu , Han Chunyan , Hu Xiaodong 
Published: July 2024

AbstractThe purpose of this article is to develop the receding horizon (RH) estimation for multi‐rate sampled systems with measurement delays and packet losses in the measurements. An event‐triggered transmission scheme is introduced to remove measurements that are unnecessary for the design of the estimator. The stochastic diagonal matrixes are introduced to represent the phenomenon of packet losses, where each component is subject to an individual Bernoulli process. The original system is firstly transformed into a delay‐free one by using the reorganized observation method. Further, a batch form and an iterative form of RH estimation are proposed by minimizing a given cost function that includes some terminal weighting terms based on the new system. The stability of the proposed RH estimation is guaranteed by the natural assumptions and a simulation instance is given to verify the effectiveness of the proposed method.
SmartCardio: Advancing cardiac risk prediction through Internet of Things and edge cloud intelligence
Authors: Durga S. , Daniel Esther , Andrew J. , Bhat Radhakrishna 
Published: July 2024

AbstractCardiovascular disease is a leading cause of illness and death globally. The integration of Internet of Things (IoT) and deep learning technologies, including transfer learning, has transformed healthcare by improving the prediction and monitoring of conditions such as arrhythmias, which can be fatal if not detected and treated promptly. Traditional methods often lack real‐time accuracy due to scattered data sources. A novel heart care approach utilising IoT technology and edge cloud computing is introduced to provide rapid, automated responses and support decision‐making. The system connects smart devices, sensors, and healthcare providers to predict patient conditions and deliver accessible healthcare services. It consists of two main phases: data acquisition, where sensors measure heart rate, temperature, and blood pressure, and data processing, where the edge cloud processes the data using Haar Wavelet transform, Convolutional Neural Network (CNN), and transfer learning. Experimental results demonstrate that this smart cardio system achieves 99.3% accuracy with reduced network delay and response time, outperforming traditional methods, such as k‐nearest neighbours, support vector machine, and discrete wavelet‐based convolutional neural network.
Chronic Venous Disease: Pathophysiological Aspects, Risk Factors, and Diagnosis
Authors: Kienzl Philip , Deinsberger Julia , Weber Benedikt 
Published: July 2024

AbstractChronic venous disease (CVD) is highly prevalent in the general population and encompasses a range of pathological and hemodynamic changes in the veins of the lower extremities. These alterations give rise to a variety of symptoms, with more severe forms resulting in venous ulceration, which causes morbidity and high socioeconomic burden. The origins and underlying mechanisms of CVD are intricate and multifaceted, involving environmental factors, genetics, hormonal factors, and immunological factors that bring about structural and functional alterations in the venous system. This review offers the latest insights into the epidemiology, pathophysiology, and risk factors of CVD, aiming to provide a comprehensive overview of the current state of knowledge. Furthermore, the diagnostic approach for CVD is highlighted and current diagnostic tools are described.
Prospective feasibility study of a novel rigidizing stabilizing overtube in the resection of complex gastrointestinal polyps
Authors: Jawaid Salmaan , Aboelezz Ahmed F. , Daba Gehad , Khalaf Mai , Ayoub Fares , Zabad Noor , Mercado Michael , Keihanian Tara , Othman Mohamed 
Published: July 2024

Abstract
Background A novel rigidizing overtube (ROT) was developed to facilitate endoscopic removal of complex gastrointestinal polyps. We aimed to prospectively evaluate the efficacy and safety of the device in the management of large gastrointestinal polyps.
Methods A prospective, single-center study, conducted between May 2021 and April 2023, enrolled patients undergoing endoscopic resection of colon/duodenal polyps ≥25 mm. Primary outcomes were safety, technical success, and clinical success defined as the ability of ROT to facilitate endoscopic polyp removal without changing the initial resection method.
Results 97 patients (98 polyps), with a mean polyp size of 33.2 mm (median 31.1), were evaluated. Technical and clinical success rates were 100% and 84%, respectively. Ileocecal valve location was the only predictor of clinical failure (P = 0.02). The mean time to reach the lesion was 7.2 minutes (95%CI 5–8), with overall resection and procedure times of 53.6 minutes (95%CI 48–61) and 88.9 minutes (95%CI 79–95), respectively. No device-related adverse events occurred. Lower technical (67%) and clinical (67%) success rates were seen for duodenal polyps (n = 6).
Conclusion The novel ROT was safe, with high technical and clinical success during resection of complex colon polyps. Future studies will determine timing of implementation during routine endoscopic resection.
Role of Medical and Surgical Treatment in Management of the Patients
With Prolactinoma: A Single-Center Experience
Authors: Zulfaliyeva Guldana , Demir Ahmet Numan , Cetintas Semih Can , Ozaydin Dilan , Tanriover Necmettin , Kadioglu Pinar 
Published: July 2024

Abstract
Background Current guidelines recommend dopamine agonists (DA) as the
primary therapeutic approach for prolactinomas; however, emerging evidence
suggests that surgical intervention can also yield favorable outcomes.
Objective To comprehensively evaluate prolactinoma patients undergoing
surgical and medical treatments at our pituitary center.
Methods Retrospective review of mMedical records from prolactinoma
patients treated between 2015 and 2022 was performedwere retrospectively
reviewed. The study focused on treatment outcomes and remission rates while
investigating factors influencing the success of both treatment modalities in
achieving remission.
Results A total of 301 prolactinoma patients were included, of whom 199
were women. Among them, 235 were managed medically, while 66 underwent surgical
intervention. The overall remission rates of patients treated with medical and
surgery were similar at the final examination (Respectively respectively 82.9%
and 81.8%, p=0.114). Factors associated with remission in both treatment
modalities included female sex, low initial prolactin levels, small adenoma
size, and absence of cavernous invasion. Compared to DA treatment, Ssurgical
treatment demonstrated a higher rate of drug-free remission compared to DA
treatment for microadenomas, and macroadenomas without cavernous invasion. In
cases with cavernous invasion, standalone surgical treatment yielded a low rate
of drug-free remission (7.7%); however, when combined with DA therapy
post-surgery, remission rates increased to 66.7%.
Conclusion Medical treatment with DAs remains the preferred option for
macroadenomas with cavernous sinus invasion, and giant adenomas, with surgery
reserved for selected cases to address complications. Conversely, surgery
emerges as the most effective modality for achieving remission in patients with
microadenomas, and macroadenomas confined to the sella. The recommendation of
DAs as first-line therapy for all patients has been withdrawn in the current
guidelines, and individual treatment approaches based on tumor characteristics
are emphasized. Our results support this approach.
High repetition-rate dual-channel X-ray spectrometer for high-intensity laser-plasma experiments
Authors: Zeraouli G. , Mariscal D. A. , Swanson K. K. , Grace E. , Folsom E. N. , Hill M. P. , Williams G. J. , Simpson R. A. , Djordjevic B. Z. , Daskalova R. , Tiscareno G. , Hanggi D. , Spingola P. , Unzicker B. , Kuz C. , Andrews S. , Costa R. , Cauble B. , Albert F. , Schumacher D. W. , Rocca J. J. , Ma T. 
Published: July 2024

We describe the development and demonstration of a high-repetition-rate-capable dual-channel (DC) x-ray spectrometer designed for high-intensity laser–plasma experiments (≥1×1021 W/cm2). The spectrometer, which operates at high repetition rates, is limited only by the refresh rate of targets and the camera’s frame rate. It features two channels, each equipped with a flat highly oriented pyrolytic graphite (HOPG) crystal and a unique detector plane, allowing it to resolve two distinct x-ray bands: approximately 7–10 and 10–13 keV. Each detector plate carrier holds two slots for active (scintillators) or passive (imaging plates) x-ray detectors. We present the design and testing of the HR-DC-HOPG using both the COMET laser (10 J, 0.5 ps shot/4 min) at LLNL’s Jupiter Laser Facility and the SCARLET laser (10 J, 30 fs shot/min) at Ohio State University. The results demonstrate the spectrometer’s performance across various laser energies, target materials, pulse shapes, and detector types.
Large-scale synthesis of defect-free phosphorene on nickel substrates: enabling atomistic thickness devices
Authors: Tchoffo D B Talonpa , Benabdallah I , Aberda A , Neugebauer P , Belhboub A , El Fatimy A 
Published: July 2024

Abstract
Addressing the main challenges of defect-free, large-scale synthesis of low-dimensional materials composed of phosphorus atoms is essential for advancing promising phosphorene-based technologies. Using molecular dynamics simulation, we demonstrate the large-scale and defect-free synthesis of phosphorene on Nickel (Ni) substrates. We showed that substrate orientation is crucial in the controllable synthesis of different phosphorene allotropes. Specifically, blue phosphorene was successfully grown on Ni (111) and Ni (100) surfaces, while γ-phosphorene, referred to here as Navy phosphorene, was grown on Ni (110). In addition, temperature control (high temperature) and cooling rate (slow cooling) are also crucial in the formation of P6 hexagons. Finally, we report that the phosphorus pentamers (P5) are the essential precursor for phosphorene synthesis. This work provides a robust framework for understanding and controlling the synthesis of large-area, single-crystalline monolayer phosphorene.
The effect of temperature oscillations on energy storage rectification in harmonic systems
Authors: Chen Renai , Craven Galen T 
Published: July 2024

Abstract
Rectification, the preferential transport of a current in one direction through a system, has garnered significant attention in molecules because of its importance for controlling thermal and electronic currents at the nanoscale. Here, we report the presence of energy storage rectification effects in a molecular chain. This phenomenon is generated by subjecting a harmonic molecular chain to an oscillating temperature gradient and showing that the energy absorption rate of the system depends on the direction of the gradient. We examine how the energy storage rectification ratios in the chain are affected by the oscillating gradient, asymmetry in the chain, and the system parameters. We find that energy storage rectification can be observed in harmonic lattice structures with time-dependent temperatures and that, correspondingly, anharmonicity is not required to generate this rectification mechanism in such systems.
Novel 4D-printing pellets with infrared-light responsive shape memory effect
Authors: Chen Shaojun , Mao Xianhao , He Zhen , Lu Wei , Wu Bing , Zhuo Haitao 
Published: July 2024

Abstract
Four-dimensional (4D)-printing technology is attractive to researchers since it combines 3D printing with smart materials to produce 3D structures with various shapes and change shapes under specific external stimuli. Herein, novel shape memory polymer (SMP) pellets with infrared-light responsive shape memory effect were developed for 4D printing applications. The structures, properties, and infrared-light responsive shape memory performances of the resulting (SMP) pellets were thoroughly investigated. The results showed PDA/SMP pellets prepared by direct loading of polydopamine (PDA) particles on SMP pellets displayed less influence on the basic properties of SMP while fluidity was enhanced. The obtained PDA/SMP pellets employed as feed materials for particle 3D printers revealed good thermal-induced shape memory performance and photo-responsive shape memory performance in printed 3D structures. Under infrared-light irradiation, the curled shape recovered to straight splines within 60 s due to the strong absorption and good photo-thermal conversion of the loaded PDA nanoparticles under infrared light. Overall, the as-prepared PDA/SMP pellets look promising for use in biomedical fields and smart devices, as well as remote control deformation with 4D printing technology.
Shear response of 〈110〉 asymmetric tilt grain boundaries in BCC-Fe
Authors: Veerababu J , Nagesha A , Shankar Vani 
Published: July 2024

Abstract
The present study investigated the effect of shear load on the

110

asymmetric tilt grain boundaries of body-centered cubic iron with molecular dynamics simulations. Various mechanisms like grain boundary (GB) sliding, shear-coupled migration, GB migration with rotation, GB decomposition, and GB deformation with dislocations emission were observed. Low-angle tilt GBs migrated with the help of two dislocation mechanisms, gliding and climbing. Two types of twin nucleation mechanisms were noticed in high-angle tilt GBs with varying tilt angles (η). For 16° ≤ η ≤ 112° and η ≥ 130° cases, dynamic self-adjustment of the atoms at the GBs caused GBs decomposition with the formation of twin boundaries (TBs). Newly nucleated TBs migrated under further applied shear load. For 112° < η < 130° case, TBs nucleated from the GB on either side of the misfit dislocations due to their localized core structure on the GB plane.
Effect of hydrogen treatment on 4H-SiC Schottky barrier diodes
Authors: Chen Zihe , Liu Ling , Sun Yunlong , Li Gang , Yan Shaoan , Xiao Yongguang , Tang Minghua , Li Zheng 
Published: July 2024

Abstract
In this letter, 4H-SiC Schottky barrier diodes (SBDs) with Ti Schottky metal have been subjected to hydrogen treatment in a confined environment of 4% H2 and 96% N2 at 150 °C. The effect of hydrogen treatment on the SBDs electrical characteristics has been investigated by technical computer-aided design simulation (TCAD) and power device analyzer curve tracer. The change of electrical parameters of SBDs measured after hydrogen treatment is studied in detail, and the related degradation mechanism is discussed. It was found that hydrogen treatment affected both the interface region and bulk region of SiC SBDs. After hydrogen treatment, the Schottky barrier increases slightly, the ideal factor (n) decreases slightly, and the interfacial state density (D
it) decreases. Hydrogen treatment resulted in a slight reduction in specific on-resistance (R
on-sp), which was attributed to the diffusion of H in SBDs. Through TCAD simulation, it is determined that the diffusion of H in the body diode of SBDs is the main reason for the degradation of high forward current and high reverse voltage characteristics.
Spurious negative eigenvalues of numerical variance-covariance matrices in many-body systems correlate with the existence of frozen degrees of freedom
Authors: Hungerland Jonathan , Solov’yov Ilia A , Schuhmann Fabian 
Published: July 2024

Abstract
The principal component analysis (PCA) is widely used to reduce the dimensionality of a dataset to its essential components. To perform PCA, the covariance matrix is constructed and its eigenvalues and eigenvectors are computed. In practical numerical applications, the tail of the sorted eigenvalues is sometimes found to contain negative eigenvalues, which are prohibited mathematically and are a pure consequence of finite-accuracy numerics. The present study suggests that in the case of a many-body dynamical system, the spurious negative eigenvalues of the covariance matrix may in fact be related to the frozen degrees of freedom in the system. Here, we outline the mathematical connection between the eigenvalues of the covariance matrix and the frozen degrees of freedom and validate the connection through two case studies: a model system of coupled harmonic oscillators and a molecular dynamics simulation of a small protein in solution.
Quantum teleportation of shared high-dimensional quantum secret
Authors: Peng Jiayin , Maihemuti Nueraminaimu , Aisan Yimamujiang , Yang Zhen 
Published: July 2024

Abstract
We present an innovative approach for quantum teleportation (QT) in a three-dimensional (3D) quantum system, enabling the transmission of 3D quantum information from multiple senders to multiple receivers using a 3D maximally entangled GHZ-type state as a network channel.By substituting the quantum channel with a partially entangled GHZ-type state in a three-dimensional (3D) setting, we obtain an extension of the above scheme in which, when an auxiliary qubit is introduced, the receivers implement a two-particle unitary transformation and some proper 3D Weyl operators to jointly reconstruct the transmitted state with a certain probability and unit fidelity. Subsequently, inspired by the proposed schemes, a protocol for transferring a shared d-dimensional (dD) quantum state to multiple distant parties by using a dD maximally entangled GHZ-type state as quantum channel is presented, and it is generalized to the case of a dD partially entangled GHZ-type network channel by introducing an auxiliary qubit and executing a two-particle unitary transformation. Our schemes can relay quantum information over a network without requiring fully trusted central or intermediate nodes, and none of the participants can fully accesses the information.