bluuebunny/crossref_metadata_2025_split huggingface dataset:
Genome-wide discovery of di-nucleotide SSR markers based on whole genome re-sequencing data of Cicer arietinum L. and Cicer reticulatum Ladiz
Authors: Sari Duygu , Sari Hatice , Ikten Cengiz , Toker Cengiz 
Published: June 2023

AbstractSimple sequence repeats (SSRs) are valuable genetic markers due to their co-dominant inheritance, multi-allelic and reproducible nature. They have been largely used for exploiting genetic architecture of plant germplasms, phylogenetic analysis, and mapping studies. Among the SSRs, di-nucleotide repeats are the most frequent of the simple repeats distributed throughout the plant genomes. In present study, we aimed to discover and develop di-nucleotide SSR markers by using the whole genome re-sequencing (WGRS) data from Cicer arietinum L. and C. reticulatum Ladiz. A total of 35,329 InDels were obtained in C. arietinum, whereas 44,331 InDels in C. reticulatum. 3387 InDels with 2 bp length were detected in C. arietinum, there were 4704 in C. reticulatum. Among 8091 InDels, 58 di-nucleotide regions that were polymorphic between two species were selected and used for validation. We tested primers for evaluation of genetic diversity in 30 chickpea genotypes including C. arietinum, C. reticulatum, C. echinospermum P.H. Davis, C. anatolicum Alef., C. canariense A. Santos & G.P. Lewis, C. microphyllum Benth., C. multijugum Maesen, C. oxyodon Boiss. & Hohen. and C. songaricum Steph ex DC. A total of 244 alleles were obtained for 58 SSR markers giving an average of 2.36 alleles per locus. The observed heterozygosity was 0.08 while the expected heterozygosity was 0.345. Polymorphism information content was found to be 0.73 across all loci. Phylogenetic tree and principal coordinate analysis clearly divided the accessions into four groups. The SSR markers were also evaluated in 30 genotypes of a RIL population obtained from an interspecific cross between C. arietinum and C. reticulatum. Chi-square (χ2) test revealed an expected 1:1 segregation ratio in the population. These results demonstrated the success of SSR identification and marker development for chickpea with the use of WGRS data. The newly developed 58 SSR markers are expected to be useful for chickpea breeders.
Effects of pore size, water content, and oxygen-containing functional groups on oxygen adsorption in bituminous coal
Authors: Ren Zhongjiu , Wang Dapeng , Qin Zheng , Liu Ziwen 
Published: June 2023

AbstractTo further explore the mechanism of coal spontaneous combustion and better grasp the laws of spontaneous combustion, this article studied the adsorption behavior of O2 in coal. Materials studio software was applied to study the adsorption of oxygen under different water content, different pore sizes, and different oxygen-containing functional groups by means of grand canonical Monte Carlo and molecular dynamics simulation methods. The results show that the adsorption capacity of O2 decreases with the increase in water content. With the increase of molecular pore size of coal, the adsorption capacity of O2 increases, and the tight adsorption amounts decrease. The equivalent adsorption heat is less than 42 kJ/mol, indicating that the adsorption of O2 in coal pores is physical adsorption. The smaller the physical adsorption energy and charge transfer value of the hydroxyl group for O2, it indicates that the hydroxyl group is the active group for the physical adsorption of O2.
A hardware prototype of wideband high‐dynamic range analog‐to‐digital converter
Authors: Mulleti Satish , Reznitskiy Eliya , Savariego Shlomi , Namer Moshe , Glazer Nimrod , Eldar Yonina C. 
Published: June 2023

AbstractKey parameters of analog‐to‐digital converters (ADCs) are their sampling rate and dynamic range. Power consumption and cost of an ADC are directly proportional to the sampling rate; hence, it is desirable to keep it as low as possible. The dynamic range of an ADC also plays an important role, and ideally, it should be greater than the signal's; otherwise, the signal will be clipped. To avoid clipping, modulo folding can be used before sampling, followed by an unfolding algorithm to recover the true signal. Here, the authors present a modulo hardware prototype that can be used before sampling to avoid clipping. The authors’ modulo hardware operates prior to the sampling mechanism and can fold higher frequency signals compared to existing hardware. The authors present a detailed design of the hardware and also address key issues that arise during implementation. In terms of applications, the authors show the reconstruction of finite‐rate‐of‐innovation signals, which are beyond the dynamic range of the ADC. The authors’ system operates at six times below the Nyquist rate of the signal and can accommodate eight times larger signals than the ADC's dynamic range.
Meta-analysis of Cerebrospinal Fluid Cell Count and Biochemistry to Diagnose Meningitis in Infants Aged < 90 Days
Authors: Anne Rajendra P. , Dutta Sourabh , Balasubramanian Haribalakrishna , Aggarwal Ashutosh N. , Chadha Neelima , Kumar Praveen 
Published: June 2023

Objective Cerebrospinal fluid (CSF) white blood cell (WBC) count, protein, and glucose (cytochemistry) are performed to aid in the diagnosis of meningitis in young infants. However, studies have reported varying diagnostic accuracies. We assessed the diagnostic accuracy of CSF cytochemistry in infants below 90 days and determined the certainty of evidence.
Study Design We searched PubMed, Embase, Cochrane Library, Ovid, Cumulative Index to Nursing and Allied Health Literature (CINAHL), and Scopus databases in August 2021. We included studies that evaluated the diagnostic accuracy of CSF cytochemistry compared with CSF culture, Gram stain, or polymerase chain reaction in neonates and young infants <90 days with suspected meningitis. We pooled data using the hierarchical summary receiver operator characteristic (ROC) model.
Results Of the 10,720 unique records, 16 studies were eligible for meta-analysis, with a cumulative sample size of 31,695 (15 studies) for WBC, 12,936 (11 studies) for protein, and 1,120 (4 studies) for glucose. The median (Q1, Q3) specificities of WBC, protein, and glucose were 87 (82, 91), 89 (81, 94), and 91% (76, 99), respectively. The pooled sensitivities (95% confidence interval [CI]) at median specificity of WBC count, protein, and glucose were 90 (88, 92), 92 (89, 94), and 71% (54, 85), respectively. The area (95% CI) under ROC curves were 0.89 (0.87, 0.90), 0.87 (0.85, 0.88), and 0.81 (0.74, 0.88) for WBC, protein, and glucose, respectively. There was an unclear/high risk of bias and applicability concern in most studies. Overall certainty of the evidence was moderate. A bivariate model-based analysis to estimate the diagnostic accuracy at specific thresholds could not be conducted due to a paucity of data.
Conclusion CSF WBC and protein have good diagnostic accuracy for the diagnosis of meningitis in infants below 90 days of age. CSF glucose has good specificity but poor sensitivity. However, we could not identify enough studies to define an optimal threshold for the positivity of these tests.
Key Points
Synthesis of 3-Aminoalkylated Indoles Using Heterogeneous MgFe2O4 Nanoparticles Under Microwave Irradiation in One-Pot Three-Component System
Authors: Singh Prabal P. , Gupta Deeksha 
Published: June 2023

AbstractA series of 3-aminoalkylated indoles are efficiently synthesised in a one-pot three-component reaction under microwave irradiation. Magnesium ferrite (MgFe2O4) nanoparticles (10 mol%) have been used as heterogeneous catalyst, which may easily be recovered by application of an external magnet and the recovered catalyst can be reused at least for five runs without affecting the efficiency of the catalyst. The solvent-free protocol developed has advantages of less reaction time, high yields, and easy workup, and the protocol is applicable to various acid base sensitive functional groups present in the substrate. The reported methodology is highly suitable especially for primary amines in addition to secondary amines as one of the components.
The Association between Fetal Growth Restriction and Maternal Morbidity
Authors: Hage Diab Yara , Martins Juliana G. , Saade George , Kawakita Tetsuya 
Published: June 2023

Objective This study aimed to compare adverse maternal outcomes between pregnancies complicated by fetal growth restriction (FGR) and those without FGR.
Study Design This was a secondary analysis of the data from the Consortium on Safe Labor, which was conducted from 2002 to 2008 in 12 clinical centers with 19 hospitals across 9 American College of Obstetricians and Gynecologists districts. We included singleton pregnancies without any maternal comorbidities or placenta abnormalities. We compared the outcomes of individuals with FGR with individuals without FGR. Our primary outcome was severe maternal morbidity. Our secondary outcome included various adverse maternal and neonatal outcomes. Multivariable logistic regression was performed to obtain adjusted odds ratios (aOR) and 95% confidence intervals (95% CI), adjusting for confounders. Missing values for maternal age and body mass index were imputed.
Results Of 199,611 individuals, 4,554 (2.3%) had FGR and 195,057 (97.7%) did not have FGR. Compared with the individuals without FGR, individuals with FGR had increased odds of severe maternal morbidity (0.6 vs. 1.3%; aOR: 1.97 [95% CI: 1.51–2.57]), cesarean delivery (27.7 vs. 41.2%; aOR: 2.31 [95% CI: 2.16–2.48]), pregnancy-associated hypertension (8.3 vs. 19.2%; aOR: 2.76 [95% CI: 2.55–2.99]), preeclampsia without severe features (3.2 vs. 4.7%; aOR: 1.45 [95% CI: 1.26–1.68]), preeclampsia with severe features (1.4 vs. 8.6%; aOR: 6.04 [95% CI: 5.39–6.76]), superimposed preeclampsia (18.3 vs. 30.2%; aOR: 1.99 [95% CI: 1.53–2.59]), neonatal intensive care unit admission (9.7 vs. 28.4%; aOR: 3.53 [95% CI: 3.28–3.8]), respiratory distress syndrome (2.2 vs. 7.7%; aOR: 3.57 [95% CI: 3.15–4.04]), transient tachypnea of the newborn (3.3 vs. 5.4%; aOR: 1.62 [95% CI: 1.40–1.87]), and neonatal sepsis (2.1 vs. 5.5%; aOR: 2.43 [95% CI: 2.10–2.80]).
Conclusion FGR was associated with increased odds of severe maternal outcomes in addition to adverse neonatal outcomes.
Key Points
RETRACTED ARTICLE: The impact of augmented reality on student attitudes, motivation, and learning achievements—a meta-analysis (2016–2023)
Authors: Cao Wenwen , Yu Zhonggen 
Published: June 2023

AbstractIn light of the COVID-19 pandemic, a significant number of students have been compelled to remain at home while receiving education supported by augmented reality (AR) technologies. To determine the impact of AR technologies on educational outcomes, the present study undertook a meta-analysis utilizing Stata/MP 14.0. The study found that the attitudes of learners towards AR-assisted education were more positive, and their learning achievements were significantly higher compared to those who did not use AR technologies. However, there was no significant difference in motivation levels between the AR-assisted and non-AR-assisted educational models. The researchers explored several reasons for this result, but they could not identify any clear explanation. Future studies could take into account other factors that might affect education outcomes such as learning styles and learner personality. Doing so could shed more light on the impact of AR technologies on education.
A charged particle must be treated relativistically in classical theory
Authors: Boyer Timothy H 
Published: June 2023

Abstract
A charged particle which is allowed to accelerate must have relativistic behavior because it is coupled to electromagnetic radiation which propagates at the speed of light. We treat the simple steady-state situation of a charged particle moving in a circular orbit with counter-propagating plane waves providing the power which balances the energy radiated away by the accelerating charge. It is emphasized that only an electromagnetic arrangement, such as a Coulomb potential or a constant magnetic field, can provide the relativistic central force for the particle motion.
Excitation and quasi-transition of rogue waves in a one-dimensional quantum droplet
Authors: Lv Li-Zheng , Gao Peng , Yang Zhan-Ying , Yang Wen-Li 
Published: June 2023

Abstract
We study the dynamics of rogue wave excitations and quasi-transitions in one-dimensional quantum droplets, whose homogeneous-density flat top provides an applicable background wave for nonlinear excitation. Using a quenching technique and a localized space modulation technique for the nonlinear effect coefficient, the rogue wave is excited on droplets. The excitation modes of rogue waves can be transitioned to dispersive shock waves or Kuznetsov–Ma breathers by regulating their modulation amplitude and width, and their maximal density and width can be regulated by modulation their amplitude. Meanwhile, two Gaussian modulations for droplets also bring the second-order rogue wave’s dynamics, whose maximal amplitude can approach 3.6 times that of the amplitude of droplets. Our results provide guidance for rogue wave excitation and transition on self-bound background waves and deepen our understanding of quantum droplets.
Radial characteristics of laser-induced plasma under the influence of air pressure
Authors: Yuan H , Ke W , Liu J Q , Chen M Y , Wang X H , Yang A J , Chu J F , Liu D X , Rong M Z 
Published: June 2023

Abstract
Air pressure is one of the key factors affecting laser-induced breakdown spectroscopy (LIBS), and the mechanism of its influence on the spatial–temporal evolution of laser-induced plasma (LIP) is still not fully understood due to complex physical processes. In this study, the spatially and temporally resolved LIP’s spectra at different pressures were collected from the direction of laser incidence, and the radial distribution characteristics of LIP along the target surface under the influence of air pressure were studied. Furthermore, the spatial–temporal evolution of the radial distribution of the electron density n
e and electron temperature T
e was studied using Stark broadening and a Boltzmann plot. Finally, the radial distribution of LIP satisfying the McWhirter criterion and the influence of air pressure on its spatial–temporal evolution were studied. It was found that air pressure has a significant effect on the radial distribution of LIP. The spectral intensity, electron density n
e, and the electron temperature T
e of the LIP decrease faster against distance r from the LIP core and slower with the delay time T
d in a higher air-pressure environment. Furthermore, the LIP will gradually fail to satisfy the McWhirter criterion with the increase in the radius r and delay time T
d; in addition, the lifetime of LIP, which satisfies the McWhirter criterion, is longer at higher pressure. This study is helpful in clarifying the influence of air pressure on the spatial–temporal evolution of LIP, optimizing the experimental parameters of LIBS, and providing a reference for application of LIBS.
Anisotropic hybridization probed by polarization dependent x-ray absorption spectroscopy in VI3 van der Waals Mott ferromagnet
Authors: Sant R , De Vita A , Polewczyk V , Pierantozzi G M , Mazzola F , Vinai G , van der Laan G , Panaccione G , Brookes N B 
Published: June 2023

Abstract
Polarization dependent x-ray absorption spectroscopy was used to study the magnetic ground state and the orbital occupation in bulk-phase VI3 van der Waals crystals below and above the ferromagnetic and structural transitions. X-ray natural linear dichroism and x-ray magnetic circular dichroism spectra acquired at the V

L

2
,
3

edges are compared against multiplet cluster calculations within the frame of the ligand field theory to quantify the intra-atomic electronic interactions at play and evaluate the effects of symmetry reduction occurring in a trigonally distorted VI6 unit. We observed a non zero linear dichroism proving the presence of an anisotropic charge density distribution around the V3+ ion due to the unbalanced hybridization between the vanadium and the ligand states. Such hybridization acts as an effective trigonal crystal field, slightly lifting the degeneracy of the

t

2
g

2

ground state. However, the energy splitting associated to the distortion underestimates the experimental band gap, suggesting that the insulating ground state is stabilized by Mott correlation effects rather than via a Jahn–Teller mechanism. Our results clarify the role of the distortion in VI3 and establish a benchmark for the study of the spectroscopic properties of other van der Waals halides, including emerging 2D materials with mono and few-layers thickness, whose fundamental properties might be altered by reduced dimensions and interface proximity.
Janus monolayer ScXY (X≠Y = Cl, Br and I) for piezoelectric and valleytronic application: a first-principle prediction
Authors: Guo Xiao-Shu , Guo San-Dong , Si Shuo-Ning , Cheng Kai , Wang Ke , Ang Yee Sin 
Published: June 2023

Abstract
Coexistence of ferromagnetism, piezoelectricity and valley in two-dimensional (2D) materials is crucial to advance multifunctional electronic technologies. Here, Janus ScXY (X≠Y = Cl, Br and I) monolayers are predicted to be piezoelectric ferromagnetic semiconductors with dynamical, mechanical and thermal stabilities. They all show an in-plane easy axis of magnetization by calculating magnetic anisotropy energy (MAE) including magnetocrystalline anisotropy energy and magnetic shape anisotropy energy. The MAE results show that they intrinsically have no spontaneous valley polarization. The predicted piezoelectric strain coefficients d
11 and d
31 (absolute values) are higher than ones of most 2D materials. Moreover, the d
31 (absolute value) of ScClI reaches up to 1.14 pm V−1, which is highly desirable for ultrathin piezoelectric device application. To obtain spontaneous valley polarization, charge doping are explored to tune the direction of magnetization of ScXY. By appropriate hole doping, their easy magnetization axis can change from in-plane to out-of-plane, resulting in spontaneous valley polarization. Taking ScBrI with 0.20 holes per f.u. as an example, under the action of an in-plane electric field, the hole carriers of K valley turn towards one edge of the sample, which will produce anomalous valley Hall effect, and the hole carriers of Γ valley move in a straight line. These findings could pave the way for designing piezoelectric and valleytronic devices.
A novel fault diagnosis approach of rolling bearing using intrinsic feature extraction and CBAM-enhanced InceptionNet
Authors: Xu Shijie , Yuan Rui , Lv Yong , Hu Huangxing , Shen Tong , Zhu Weihang 
Published: June 2023

Abstract
Rolling bearings play a crucial role as components in mechanical equipment. Malfunctioning rolling bearings can disrupt the normal operation of the equipment and pose safety hazards. Traditional deep learning-based methods for diagnosing faults in rolling bearings present several issues, such as insufficient feature information of fault samples, high model complexity and low accuracy. To overcome these challenges, this paper introduces an intelligent approach for rolling bearing fault diagnosis using intrinsic feature extraction and convolutional block attention module (CBAM)-enhanced InceptionNet. In our researches, variational mode decomposition (VMD) is adopted to decompose the original signal into multiple band-limited intrinsic mode functions (BLIMFs). In the decomposition process of VMD, the number of decomposition layers k is determined by center frequency method and the optimal BLIMF is chosen based on minimum envelope entropy. Subsequently, the continuous wavelet transform is employed to transform the optimal BLIMFs into time-frequency images. Finally, the obtained time-frequency images are fed into the proposed CBAM-enhanced InceptionNet for fault state diagnosis. Experiments on two different datasets prove that the method has stable and reliable accuracy. Comparative experiments have demonstrated that this method can reduce network model parameters and improve diagnosis efficiency while achieving high accuracy.
A calibration method for line-structured light using mirror-based virtual binocular vision system
Authors: Yang Pei , Yang Ziyi , Zhang Jin , Xia Haojie 
Published: June 2023

Abstract
A calibration method for line-structured light (LSL) by using a virtual binocular vision system (VBVS) composed of one camera and a front coating plane mirror is promoted in this work. The front coating plane in the VBVS can generate much less coplanarity error in lithographic feature points and remarkably decline the imaging distortion during back coating. An encoded target is proposed to distinguish between real corners and virtual corners (mirrored corners) and achieve high-precision matching between real and virtual corners when the target is occluded during the VBVS calibration. A parameter optimization method based on 3D constraints is presented in the work to obtain accurate structural parameters and thus guarantee precise reconstruction of the LSL. Moreover, the laser stripe and its mirrored image meet the auto-epipolar constraint. Therefore, the matching between the real and virtual stripes can be realized based on the vanish point. The performance of our method is verified in the experiments.
Capacitively coupled nonthermal plasma synthesis of aluminum nanocrystals for enhanced yield and size control
Authors: Cameron Thomas , Klause Bailey , Andaraarachchi Himashi , Xiong Zichang , Reed Carter , Thapa Dinesh , Wu Chi-Chin , Kortshagen Uwe R 
Published: June 2023

Abstract
Uniform-size, non-native oxide-passivated metallic aluminum nanoparticles (Al NPs) have desirable properties for fuel applications, battery components, plasmonics, and hydrogen catalysis. Nonthermal plasma-assisted synthesis of Al NPs was previously achieved with an inductively coupled plasma (ICP) reactor, but the low production rate and limited tunability of particle size were key barriers to the applications of this material. This work focuses on the application of capacitively coupled plasma (CCP) to achieve improved control over Al NP size and a ten-fold increase in yield. In contrast with many other materials, where NP size is controlled via the gas residence time in the reactor, the Al NP size appeared to depend on the power input to the CCP system. The results indicate that the CCP reactor assembly, with a hydrogen-rich argon/hydrogen plasma, was able to produce Al NPs with diameters that were tunable between 8 and 21 nm at a rate up ∼ 100 mg h−1. X-ray diffraction indicates that a hydrogen-rich environment results in crystalline metal Al particles. The improved synthesis control of the CCP system compared to the ICP system is interpreted in terms of the CCP’s lower plasma density, as determined by double Langmuir probe measurements, leading to reduced NP heating in the CCP that is more amenable to NP nucleation and growth.