bluuebunny/crossref_metadata_2025_split huggingface dataset:
Unraveling the importance of fabrication parameters of copper oxide-based resistive switching memory devices by machine learning techniques
Authors: Patil Suvarna M. , Kundale Somnath S. , Sutar Santosh S. , Patil Pramod J. , Teli Aviraj M. , Beknalkar Sonali A. , Kamat Rajanish K. , Bae Jinho , Shin Jae Cheol , Dongale Tukaram D. 
Published: March 2023

AbstractIn the present study, various statistical and machine learning (ML) techniques were used to understand how device fabrication parameters affect the performance of copper oxide-based resistive switching (RS) devices. In the present case, the data was collected from copper oxide RS devices-based research articles, published between 2008 to 2022. Initially, different patterns present in the data were analyzed by statistical techniques. Then, the classification and regression tree algorithm (CART) and decision tree (DT) ML algorithms were implemented to get the device fabrication guidelines for the continuous and categorical features of copper oxide-based RS devices, respectively. In the next step, the random forest algorithm was found to be suitable for the prediction of continuous-type features as compared to a linear model and artificial neural network (ANN). Moreover, the DT algorithm predicts the performance of categorical-type features very well. The feature importance score was calculated for each continuous and categorical feature by the gradient boosting (GB) algorithm. Finally, the suggested ML guidelines were employed to fabricate the copper oxide-based RS device and demonstrated its non-volatile memory properties. The results of ML algorithms and experimental devices are in good agreement with each other, suggesting the importance of ML techniques for understanding and optimizing memory devices.
Assessing the combined toxic effects of metaldehyde mollucide
Authors: Macar Oksal , Kalefetoğlu Macar Tuğçe , Çavuşoğlu Kültiğin , Yalçın Emine , Acar Ali 
Published: March 2023

AbstractThe excessive use of metaldehyde in agriculture to combat mollusks endangers both the environment and non-target organisms. The aim of this study is to investigate the toxicity caused by metaldehyde in Alliumcepa with the help of physiological, cytogenetic, biochemical and anatomical parameters. Also, DNA fragmentation caused by metaldehyde in root tip cells was measured by the "Comet Assay" method. The control group was germinated with tap water and the application groups were germinated with 20 mg/L metaldehyde, 40 mg/L metaldehyde, 100 mg/L metaldehyde and 200 mg/L metaldehyde for 72 h. The results of the physiological parameters showed that metaldehyde had a growth-limiting effect in A.cepa, depending on the application dose. According to root elongation levels, the EC50 (effective concentration) value for metaldehyde was 60.6 mg/L in A.cepa. As the treatment dose increased, the incidence of micronucleus and chromosomal aberrations gradually increased while mitotic index decreased. Metaldehyde exposure induced damages such as sticky chromosome, fragment, unequal distribution of chromatin, reverse polarization, bridge, and multipolar anaphase. In addition, metaldehyde caused cell damage in epidermis and cortex, thickening of the cortex cell wall and flattened cell nucleus in root meristem. Increasing doses of metaldehyde application also increased malondialdehyde levels, superoxide dismutase and catalase activities. As a result, it has been determined that the toxicity of metaldehyde in plants is versatile and the A.cepa test material is a suitable biological indicator to determine this toxicity.
Myosin light chain of shark fast skeletal muscle exhibits intrinsic urea-resistibility
Authors: Kanoh Satoshi , Noma Takayuki , Ito Hirotaka , Tsureyama Masatomo , Funabara Daisuke 
Published: March 2023

AbstractMarine elasmobranch fish contain urea, a protein denaturant, in their bodies. The urea-trimethylamine N-oxide (TMAO) counteraction mechanism contributes to urea-resistibility, where TMAO compensates for protein denaturation by urea. However, previous studies revealed that shark fast skeletal muscle myosin exhibits native activity at physiological urea concentrations in the absence of TMAO, suggesting that shark myosin has urea-resistibility. In this study, we compared the urea-resistibility of myosin alkali light chains (A1-LC and A2-LC) from banded houndshark and carp by examining the α-helical content at various urea concentrations. The α-helical content of carp myosin A1-LC and A2-LC gradually decreased as urea concentrations increased to 2 M. In contrast, the α-helical content of banded houndshark A1-LC increased between 0 and 0.5 M urea, and the α-helical content of A2-LC remained constant until 0.5 M urea. We determined the full-length sequences of the banded houndshark myosin light chains (A1-LC, A2-LC and DTNB-LC). Hydrophilicity analysis revealed that the N-terminal region (residues 28–34) of A1-LC from banded houndshark is more hydrophilic than the corresponding region of A1-LC from carp. These findings support the notion that shark myosin exhibits urea-resistibility independent of the urea-TMAO counteraction mechanism.
Hierarchies of Hofstadter butterflies in 2D covalent organic frameworks
Authors: Bodesheim David , Biele Robert , Cuniberti Gianaurelio 
Published: March 2023

AbstractThe Hofstadter butterfly is one of the first and most fascinating examples of the fractal and self-similar quantum nature of free electrons in a lattice pierced by a perpendicular magnetic field. However, the direct experimental verification of this effect on single-layer materials is still missing as very strong and inaccessible magnetic fields are necessary. For this reason, its indirect experimental verification has only been realized in artificial periodic 2D systems, like moiré lattices. The only recently synthesized 2D covalent organic frameworks might circumvent this limitation: Due to their large pore structures, magnetic fields needed to detect most features of the Hofstadter butterfly are indeed accessible with today technology. This work opens the door to make this exotic and theoretical issue from the 70s measurable and might solve the quest for the experimental verification of the Hofstadter butterfly in single-layer materials. Moreover, the intrinsic hierarchy of different pore sizes in 2D covalent organic framework adds additional complexity and beauty to the original butterflies and leads to a direct accessible playground for new physical observations.
IKBA phosphorylation governs human sperm motility through ACC-mediated fatty acid beta-oxidation
Authors: Li Yanquan , Hu Youwei , Wang Zhengquan , Lu Tingting , Yang Yiting , Diao Hua , Zheng Xiaoguo , Xie Chong , Zhang Ping , Zhang Xuelian , Zhou Yuchuan 
Published: March 2023

AbstractThe nuclear factor-κB (NF-κB) signaling pathway regulates specific immunological responses and controls a wide range of physiological processes. NF-κB inhibitor alpha (IKBA) is an NF-κB inhibitory mediator in the cytoplasm that modulates the nuclear translocation and DNA binding activities of NF-κB proteins. However, whether the upstream cascade of the canonical NF-κB signaling pathway has physiological roles independent of IKBA-mediated transcriptional activation remains unclear. Herein we investigated the function of IKBA in mature sperm in which transcriptional and translational events do not occur. IKBA was highly expressed in human sperm. The repression of IKBA phosphorylation by its inhibitor Bay117082 markedly enhanced sperm motility. On the contrary, lipopolysaccharide-stimulated IKBA phosphorylation significantly decreased sperm motility. Nevertheless, Bay117082 treatment did not affect the motility of IKBA-knockout sperm. Further, untargeted metabolomic analysis and pharmacological blocking assays revealed that the Bay117082-induced increase in sperm motility was attributable to fatty acid β-oxidation (FAO) enhancement. In addition, we found that IKBA phosphorylation inhibition resulted in a significant reduction of acetyl-CoA carboxylase levels in the FAO metabolic pathway. Our findings indicate that IKBA-mediated signaling orchestrates sperm motility program and improves our understanding of transcription-independent NF-κB signaling pathway in cells.
A multi‐feature‐based intelligent redundancy elimination scheme for cloud‐assisted health systems
Authors: Xiao Ling , Zou Beiji , Kui Xiaoyan , Zhu Chengzhang , Zhang Wensheng , Yang Xuebing , Zhang Bob 
Published: March 2023

AbstractRedundancy elimination techniques are extensively investigated to reduce storage overheads for cloud‐assisted health systems. Deduplication eliminates the redundancy of duplicate blocks by storing one physical instance referenced by multiple duplicates. Delta compression is usually regarded as a complementary technique to deduplication to further remove the redundancy of similar blocks, but our observations indicate that this is disobedient when data have sparse duplicate blocks. In addition, there are many overlapped deltas in the resemblance detection process of post‐deduplication delta compression, which hinders the efficiency of delta compression and the index phase of resemblance detection inquires abundant non‐similar blocks, resulting in inefficient system throughput. Therefore, a multi‐feature‐based redundancy elimination scheme, called MFRE, is proposed to solve these problems. The similarity feature and temporal locality feature are excavated to assist redundancy elimination where the similarity feature well expresses the duplicate attribute. Then, similarity‐based dynamic post‐deduplication delta compression and temporal locality‐based dynamic delta compression discover more similar base blocks to minimise overlapped deltas and improve compression ratios. Moreover, the clustering method based on block‐relationship and the feature index strategy based on bloom filters reduce IO overheads and improve system throughput. Experiments demonstrate that the proposed method, compared to the state‐of‐the‐art method, improves the compression ratio and system throughput by 9.68% and 50%, respectively.
Achieving economic efficiency in the electricity markets through internalizing negative externalities
Authors: Hacopian Dolatabadi Sarineh , Latify Mohammad Amin , Karshenas Hamidreza , Sharifi Alimorad 
Published: March 2023

AbstractEconomic efficiency is the ultimate goal of all markets, including the electricity market. Several technical and pecuniary restrictions known as externalities in economics literature can significantly affect the economic efficiency of the electricity market. Negative externalities resulting from the operational restrictions of generation units are inherent to electricity markets. In this paper, after reviewing the effects of externalities on the day‐ahead electricity markets' economic efficiency using a unit commitment‐based model, an innovative and theoretically efficient service‐based procedure aimed at internalizing negative externalities in the day‐ahead electricity markets is presented. In this way, a new service procured by the energy storage system to provide energy interchange possibilities in the electricity market is introduced. The proposed service uses both price and quantity adjustment methods to internalize externalities. A new discriminatory method for pricing the service and a bi‐level optimization problem for determining the capacity of the energy storage system required to provide the service are considered. The consideration of the proposed method facilitates reaching the first‐best optimal market solution by alleviating negative externalities existing in the sub‐optimal second‐best solution in the presence of generation sector operational constraints. Numerical case studies demonstrate the functioning of the proposed externalities internalization scheme.
A novel inductively coupled RLC damping scheme for eliminating switching oscillations of SiC MOSFET
Authors: Li JiaWen , Yang Xin , Xu Mengwei , Wang Xiaodi , Heng Ke 
Published: March 2023

AbstractSevere switching oscillations of SiC MOSFET seriously affect its efficient and reliable application. Herein, a novel inductively coupled RLC damping scheme is proposed to eliminate switching oscillations. Distinctive from existing RLC resonators, the setting that the resonant frequency of the secondary RLC damping is equal to that of the power loop is abandoned. Additionally, prior‐art analytical techniques of RLC resonators are based on seeking the peak impedance, which considerably undermines its suppression effect. First, a two‐port network is linearized from switching oscillations, where the characteristic equations are deduced. Then, parametric regions where the switching oscillations can be eliminated are determined by actively assigning poles via the root locus method. Consequently, the damping effect of the proposed scheme, as well as the resulted switching losses, shows its superiority over the state‐of‐the‐art snubbers. The proposed scheme is favourable in practical applications since it is less insensitive to parasitics enabling selection of snubber resistors with higher power ratings. It also avoids unusual temperature rise resulted by snubber losses due to oscillation suppression in the power loop as snubber losses are transferred to the secondary circuit. Theoretical analysis and experimental comparisons are conducted to verify the effectiveness of the proposed scheme.
A second‐order sliding mode control with active disturbance rejection for dynamic voltage restorers
Authors: Bagheri Farzaneh , Biricik Samet , Ahmed Hafiz , Komurcugil Hasan 
Published: March 2023

AbstractThis paper proposes an extended state observer (ESO)‐based second‐order sliding mode control (SMC) for dynamic voltage restorers (DVRs). Unlike the conventional first‐order SMC and some second‐order SMC (SOSMC) methods that suffer from chattering, the proposed control method can alleviate chattering and achieve finite‐time convergence. Chattering suppression (i.e. eliminating discontinuities) is achieved via continuous control input which is also used to generate the pulse width modulation signals. However, while removing the discontinuities in the control input, the performance of the control method is degraded when it is subjected to disturbances. Therefore, an active disturbance rejection (ADR) based on an ESO is proposed to enhance the performance. In addition, an advanced single‐phase phase‐locked loop (PLL) using linear observer and quasi‐type‐1 PLL is also proposed. The effectiveness of the proposed method is verified through simulation and experimental results which are compared with the results of the existing SMC methods applied to DVR.
Comprehensive review and a novel technique on voltage unbalance compensation
Authors: Kongtrakul Nattanapong , Wangdee Wijarn , Chantaraskul Soamsiri 
Published: March 2023

AbstractVoltage unbalance has gained more attention due to a rapid increase in single‐phase distributed energy resources (DERs) penetration compound with existing unbalance characteristics of low voltage distribution network. The purposes of this article are to summarise various techniques on voltage unbalance compensation from three different strategies: (1) techniques based on passive approach and advanced power electronics; (2) Techniques based on three‐phase DERs; (3) techniques based on single‐phase DERs. In addition, a novel voltage unbalance compensation technique that applies a voltage sensitivity analysis along with a symmetrical component concept to meet a desired voltage unbalance factor (VUF) is introduced in this article. Coordination among single‐phase DERs that contributes in the voltage unbalance compensation is also considered. In order to evaluate the effectiveness of this proposed technique, its results are compared with the results that are obtained using a current unbalance compensation strategy. The results indicate that the novel technique proposed in this study provides more stable voltage unbalance compensation while successfully achieving the specified VUF thresholds.
The common trend of saltation particles on the surface of fast-rotating asteroids
Authors: Song Zhijun , Yu Yang , Cheng Bin , Lv Jing , Baoyin Hexi 
Published: March 2023

Context. An asteroid spun up to its critical limit has unique surface mechanical properties that its gravity and the centrifugal force largely balance, creating a relaxation environment where low-energy events such as mass shedding may trigger subsequent long complex motion of an asteroid’s regolith grains. Exploring such an evolution process may provide key clues for understanding the early formation of multi-asteroid systems.
Aims. This paper investigates the complex evolution process of loose particles becoming triggered by shedding events and the dependency of their dynamical propagation on the contact mechanical properties of the asteroid surface.
Methods. We present a numerical model for tracking the trajectory of a shed particle that considers the collision between the particle and the surface of an asteroid. Monte Carlo simulations are performed to reflect the statistical behavior of shed particles. We also introduce zero-velocity surfaces to our data-based analysis in order to reveal the intrinsic invariance of the evolutionary processes. We used the average mechanical energy of the particle cloud to check the connection between contact property and the temporal-spatial distribution of the shed particles.
Results. We sketch a common evolutionary path of the particle in the vicinity of a fast-rotating asteroid, that is, particles dislodged from the unstable region will eventually enter, through several collisions with the surface, non-return orbits that launch from the minimum geopotential area of the unstable region. The common trend is independent of any particular asteroid morphology, and all shed particles (no matter where they originate from) enter the same evolutionary path. We also find that the orbital energy of the particle cloud is statistically independent of the surface contact property, meaning that the collision coefficient of restitution is a nonsensitive parameter in the outward spreading process of the shed particles.
Imaging and spectroscopic observations of extreme-ultraviolet brightenings using EUI and SPICE on board Solar Orbiter
Authors: Huang Ziwen , Teriaca L. , Aznar Cuadrado R. , Chitta L. P. , Mandal S. , Peter H. , Schühle U. , Solanki S. K. , Auchère F. , Berghmans D. , Buchlin É. , Carlsson M. , Fludra A. , Fredvik T. , Giunta A. , Grundy T. , Hassler D. , Parenti S. , Plaschke F. 
Published: March 2023

Context. The smallest extreme-ultraviolet (EUV) brightening events that were detected so far, called campfires, have recently been uncovered by the High Resolution EUV telescope (HRIEUV), which is part of the Extreme Ultraviolet Imager (EUI) on board Solar Orbiter. HRIEUV has a broad bandpass centered at 17.4 nm that is dominated by Fe IX and Fe X emission at about 1 MK.
Aims. We study the thermal properties of EUI brightening events by simultaneously observing their responses at different wavelengths using spectral data from the Spectral Imaging of the Coronal Environment (SPICE) also on board Solar Orbiter and imaging data from EUI.
Methods. We studied three EUI brightenings that were identified in HRIEUV data that lie within the small areas covered by the slit of the SPICE EUV spectrometer. We obtained the line intensities of the spectral profiles by Gaussian fitting. These diagnostics were used to study the evolution of the EUI brightenings over time at the different line-formation temperatures.
Results. We find that (i) the detection of these EUI brightenings is at the limit of the SPICE capabilities. They could not have been independently identified in the data without the aid of HRIEUV observations. (ii) Two of these EUI brightenings with longer lifetimes are observed up to Ne VIII temperatures (0.6 MK). (iii) All of the events are detectable in O VI (0.3 MK), and the two longer-lived events are also detected in other transition region (TR) lines. (iv) In one case, we observe two peaks in the intensity light curve of the TR lines that are separated by 2.7 min for C III and 1.2 min for O VI. The Ne VIII intensity shows a single peak between the two peak times of the TR line intensity.
Conclusions. Spectral data from SPICE allow us to follow the thermal properties of EUI brightenings. Our results indicate that at least some EUI brightenings barely reach coronal temperatures.
Newly designed OTS Clip for preventing fully-covered self-expandable metal stent migration in the gastrointestinal tract
Authors: Manta Raffaele , Del Nero Lorenzo , Todd Baron , Parodi Andrea , De Ceglie Antonella , Zito Francesco , Pasquale Luigi , Zullo Angelo , Conio Massimo 
Published: March 2023

Abstract
Background and study aims Fully-covered self-expandable metal stents (FCSEMS) are frequently used for endoscopic management of gastrointestinal lesions. However, stent migration occurs in up to one-third of patients. Different tools are used to anchor stents to prevent migration. A specifically designed over-the-scope device (Stentfix OTS Clip system) was recently introduced to prevent fully covered SEMS migration in the gastrointestinal tract. The study aimed to evaluate technical success and stent migration rates with the Stentfix device.
Patients and methods Data were collected from consecutive patients at four participating centers who were at high risk of FCSEMS migration and in whom the anchoring system was used to prevent migration.
Results A total of 31 patients were enrolled. Technically successful clip placement was achieved in all cases. At follow-up, the distal part of the device dislocated from the duodenum into the antrum at 3 days in one patient, accounting for a 3.2 % (95 % CI = 0–9.4) rate of stent migration. The underlying lesion being treated healed in all patients, but 10 patients died before stent removal due to neoplastic progression.
Conclusions A dedicated over-the-scope stent fixation device appears to be safe and effective in preventing fully-covered SEMS migration through the gastrointestinal tract.