bluuebunny/crossref_metadata_2025_split huggingface dataset:
Densification effect on field emission characteristics of CNT film emitters for electron emission devices
Authors: Han Si Eun , Go Hanbin , Lee Hyunjea , Lee Cheol Jin 
Published: October 2023

Abstract
Field electron emission characteristics of the carbon nanotube (CNT) film emitters were investigated according to densification conditions such as nitric acid, acetic acid, and salicylic acid. The emission performance of the CNT film emitters was strongly affected by the densification conditions. Salicylic acid exhibits the best field electron emission properties of the CNT film emitters, followed by nitric acid and acetic acid. The efficient densification of the CNT film emitter by salicylic acid is caused by the role of polarity and p orbitals, nitric acid by hydrogen ions, and acetic acid by weak polarity. After the densification with salicylic acid, the turn-on field of the CNT film emitter decreases from 1.94 V μm−1 to 1.86 V μm−1, the threshold field decreases from 3.41 V μm−1 to 2.95 V μm−1, the emission current significantly increases from 20.92 mA to 43.98 mA, and the degradation rate from the long-term emission stability decreases from 49.9% to 21%. The improved emission characteristics are attributed to the increased emission sites at the CNT film and the increased electrical conductivity of the CNT film. The densification is a useful way to enhance the field electron emission properties of CNT film emitters.
Influence of samarium modification on the phase-change performance and phase structure of tin antimonide
Authors: Zhang Pei , Wu Weihua , Fu Bowen , Gu Han , Zhou Xiaochen , Zhu Xiaoqin 
Published: October 2023

Abstract
This work presents the optimization of the crystallization behavior and reliability of Sn15Sb85 thin films by doping Sm element. The phase transition behaviors induced by thermal were investigated by in situ resistance measurement. With the addition of Sm element, Sn15Sb85 film exhibits the superior crystallization temperature (232 °C) and data conservation (172.32 °C for 10 years), larger activation energy of crystallization (4.91 eV) and crystalline resistance (∼103 Ω), which contributes to the increased thermal stability of the amorphous state and decrease in the programming energy. The Sm-doping can broaden the energy band gap from 0.55 to 1.07 eV. The amorphous Sm and Sn compositions could retard grain growth and refine grain size from 21.13 to 11.13 nm, combining with x-ray diffraction and x-ray photoelectron spectroscopy. The surface morphology of Sn15Sb85 film becomes smoother after Sm doping as determined by atomic force microscopy images, resulting in the improved interfacial reliability. Phase change memory devices based on Sm0.095(Sn15Sb85)0.905 films can successfully achieve the complete SET and RESET reversible operation process with high operating speed (200 ns) and low power consumption (1.6 × 10−10 J). The results suggest that doping the proper concentration of Sm element will be an effectual solution to adapt and optimize the crystallization properties of Sn15Sb85 phase change material.
Algebro-geometrical orientifold and IR dualities
Authors: Manzoni Federico 
Published: October 2023

Abstract
Orientifold projections are an important ingredient in the geometrical engineering of Quantum Field Theory. However, an orientifold can break down the superconformal symmetry and no new superconformal fixed points are admitted (scenario II); nevertheless, in some cases, dubbed scenarios I and III orientifold, a new IR fixed point is achieved and, for scenario III examples, some still not fully understood IR duality seems to emerge. Here we give an algebro-geometrical point of view of orientifold for toric varieties and we propose the existence of relevant operators that deform the starting oriented Conformal Field Theory triggering a flow. We briefly discuss a possible holographic description of this flow.
On solutions to a novel non-evolutionary integrable 1 + 1 PDE
Authors: Giglio Francesco , Landolfi Giulio , Martina Luigi 
Published: October 2023

Abstract
We investigate real solutions of a C-integrable non-evolutionary partial differential equation in the form of a scalar conservation law where the flux density depends both on the density and on its first derivatives with respect to the local variables. By performing a similarity reduction dictated by one of its local symmetry generators, a nonlinear ordinary differential equation arises that is connected to the Painlevé III equation. Exact solutions are secured and described provided a constraint holds among the coefficients of the original equation. In the most general case, we pinpoint the generation of additional singularities by numerical integration. Then, we discuss the evolution of given initial profiles. Finally, we mention aspects concerning rational solutions with a finite number of poles.
Habitat and benthic community correlates of Epeorus longimanus (Ephemeroptera: Heptageniidae) microdistribution in a Colorado, USA, stream riffle
Authors: De Jong Grant D 
Published: October 2023

Abstract
Little is known about the ecology of early instars of most aquatic insects, particularly their associations with microhabitat (&lt;1 m2) features, such as sediment size distributions, other abiotic parameters, and the overall invertebrate community. This study sought to explore correlations between various biotic and abiotic parameters of a southern Colorado stream and the presence of early instars of Epeorus longimanus (Eaton) (Ephemeroptera: Heptageniidae). A total of 18 samples collected in 2007 and 2013 using a Hess sampler in riffle habitats were used to correlate the size of individuals with biological and abiotic characteristics of the stream, including sediment size, periphyton biomass, entrained organic matter, and the remainder of the benthic invertebrate community, all of which were measured using material from within the sampler. Results from both years showed that early instars of E. longimanus were more likely to be found in areas with smaller sediment sizes, higher live periphyton biomass (but lower overall organic matter), and lower densities of invertebrate predators.
Tracking canopy chlorophyll fluorescence with a low-cost light emitting diode platform
Authors: Brissette Logan E G , Wong Christopher Y S , McHugh Devin P , Au Jessie , Orcutt Erica L , Klein Marie C , Magney Troy S 
Published: October 2023

Abstract
Chlorophyll fluorescence measured at the leaf scale through pulse amplitude modulation (PAM) has provided valuable insight into photosynthesis. At the canopy- and satellite-scale, solar-induced fluorescence (SIF) provides a method to estimate the photosynthetic activity of plants across spatiotemporal scales. However, retrieving SIF signal remotely requires instruments with high spectral resolution, making it difficult and often expensive to measure canopy-level steady-state chlorophyll fluorescence under natural sunlight. Considering this, we built a novel low-cost photodiode system that retrieves far-red chlorophyll fluorescence emission induced by a blue light emitting diode (LED) light source, for 2 h at night, above the canopy. Our objective was to determine if an active remote sensing-based night-time photodiode method could track changes in canopy-scale LED-induced chlorophyll fluorescence (LEDIF) during an imposed drought on a broadleaf evergreen shrub, Polygala myrtifolia. Far-red LEDIF (720–740 nm) was retrieved using low-cost photodiodes (LEDIFphotodiode) and validated against measurements from a hyperspectral spectroradiometer (LEDIFhyperspectral). To link the LEDIF signal with physiological drought response, we tracked stomatal conductance (gsw) using a porometer, two leaf-level vegetation indices—photochemical reflectance index and normalized difference vegetation index—to represent xanthophyll and chlorophyll pigment dynamics, respectively, and a PAM fluorimeter to measure photochemical and non-photochemical dynamics. Our results demonstrate a similar performance between the photodiode and hyperspectral retrievals of LEDIF (R2 = 0.77). Furthermore, LEDIFphotodiode closely tracked drought responses associated with a decrease in photochemical quenching (R2 = 0.69), Fv/Fm (R2 = 0.59) and leaf-level photochemical reflectance index (R2 = 0.59). Therefore, the low-cost LEDIFphotodiode approach has the potential to be a meaningful indicator of photosynthetic activity at spatial scales greater than an individual leaf and over time.
Immune challenge changes social behavior in the guppy (Poecilia reticulata)
Authors: Encel Stella A , Schaerf Timothy M , Ward Ashley J W 
Published: October 2023

Abstract
Increased exposure to pathogens is often considered to be one of the most significant costs of group living. As a result, animals typically avoid close association with individuals who manifest symptoms of disease. The question remains, however, whether avoidance behaviors are mediated by effects relating specifically to the disease itself, or through recognition of more general sickness behaviors that emerge from the activity of the immune system in response to infection. Here we examined the effects of an immune challenge, induced through exposure to bacterial lipopolysaccharides (LPS), on individual and social behavior in female guppies (Poecilia reticulata). We found that in a binary choice presentation, healthy focal individuals showed a strong preference to associate with stimulus shoals of saline-injected fish rather than stimulus shoals of LPS-injected fish. In a subsequent examination of group-level dynamics, shoals of LPS-injected females were more dispersed than similar shoals comprised of control fish and showed less coherent collective behavior despite the lack of any obvious difference in general activity between LPS and control fish. We discuss these findings in relation to the need for social animals to mitigate the risk of disease that is associated with living in proximity to conspecifics.
Social Workers’ Perceptions of the Effect of Interpersonal Factors on Older Adults’ Decision to Remain in Abusive Relationships
Authors: Lev Sagit , Schindler Mickey , Waksman Yael 
Published: October 2023

Abstract
Older adults who are abused by their offspring often find it difficult to cooperate with professionals to end the abuse. In these situations, social workers face an ethical dilemma between respecting the older adult’s right to autonomy and intervening in a paternalistic way to prevent harm. This qualitative study aimed to examine the effect of interpersonal factors on the decision-making ability of older adults who do not experience significant cognitive and mental decline and choose to remain in abusive relationships. Twenty-one social workers specialising in the field of aging participated in a semi-structured interview based on a vignette. The analysis was encoded inductively, informed by the principles of content analysis. Two themes emerged: (i) Older adults’ feelings towards their abusive adult children, including love and concern, shame and guilt and relationships with symbiotic characteristics; (ii) Older adults’ motivation to stay in the abusive relationships, based either on utilitarian motivation or on their fear of the abuser. The study’s findings can serve as a foundation for the development of a tool for evaluating the influence of abusive relationships on older adults’ decision-making ability, which considers not only their personal characteristics but also their interactions and relationships with their surroundings.
Glioma-associated mesenchymal stem cells
Authors: Kang Qing-mei , Wang Jun , Chen Shi-man , Song Si-rong , Yu Shi-cang 
Published: October 2023

Abstract
Recent studies have revealed that glioma-associated mesenchymal stem cells play instrumental roles in tumorigenesis and tumour progression and cannot be ignored as a cellular component of the glioma microenvironment. Nevertheless, the origin of these cells and their roles are poorly understood. The only relevant studies have shown that glioma-associated mesenchymal stem cells play a large role in promoting tumour proliferation, invasion and angiogenesis.
This review provides a comprehensive summary of their discovery and definition, origin, differences from other tissue-derived mesenchymal stem cells, spatial distribution, functions and prognostic and therapeutic opportunities to deepen the understanding of these cells and provide new insight into the treatment of glioma.
Multifractal long-range dependence pattern of functional magnetic resonance imaging in the human brain at rest
Authors: Guan Sihai , Jiang Runzhou , Chen Donna Y , Michael Andrew , Meng Chun , Biswal Bharat 
Published: October 2023

Abstract
Long-range dependence is a prevalent phenomenon in various biological systems that characterizes the long-memory effect of temporal fluctuations. While recent research suggests that functional magnetic resonance imaging signal has fractal property, it remains unknown about the multifractal long-range dependence pattern of resting-state functional magnetic resonance imaging signals. The current study adopted the multifractal detrended fluctuation analysis on highly sampled resting-state functional magnetic resonance imaging scans to investigate long-range dependence profile associated with the whole-brain voxels as specific functional networks. Our findings revealed the long-range dependence’s multifractal properties. Moreover, long-term persistent fluctuations are found for all stations with stronger persistency in whole-brain regions. Subsets with large fluctuations contribute more to the multifractal spectrum in the whole brain. Additionally, we found that the preprocessing with band-pass filtering provided significantly higher reliability for estimating long-range dependence. Our validation analysis confirmed that the optimal pipeline of long-range dependence analysis should include band-pass filtering and removal of daily temporal dependence. Furthermore, multifractal long-range dependence characteristics in healthy control and schizophrenia are different significantly. This work has provided an analytical pipeline for the multifractal long-range dependence in the resting-state functional magnetic resonance imaging signal. The findings suggest differential long-memory effects in the intrinsic functional networks, which may offer a neural marker finding for understanding brain function and pathology.
External apical root resorption in African American orthodontic patients
Authors: Litchfield Frank E , Oster Robert A , Kau Chung How , Lamani Ejvis 
Published: October 2023

Abstract

Objective
External apical root resorption (EARR) is a side effect of orthodontic treatment that results in root shortening. However, this condition has yet to be evaluated in African Americans. The aim of this study was to determine the EARR prevalence within this ethnicity and investigate how patient and treatment-related factors contribute to root resorption.

Methods
The records of 336 African Americans treated at the University of Alabama at Birmingham School of Dentistry Department of Orthodontics were retrospectively analyzed with Dolphin Imaging software. Pre-treatment and post-treatment panoramic radiographs were used to measure EARR. Resorption was recorded when final roots were at least 2 mm shorter after orthodontic treatment. Additionally, moderate and severe EARR was reported when 20% and 50% or more of the root structure was lost for any of the four maxillary incisors, respectively. The Pearson chi-square test was used to evaluate the associations of individual patient and treatment-related factors with EARR.

Results
The prevalence of root resorption with 2 mm or greater of root structure loss was 51.8%. The prevalence of ≥ 20% EARR was 29.8%. Only one patient displayed severe resorption (0.3%). The associations between the patient-specific and treatment-specific variables and EARR were not statistically significant (P &gt; .05).

Conclusions
More than half of the African American patients exhibit at least 2 mm of root resorption with orthodontic treatment. However, in this ethnicity, patient-related factors such as age, gender, dental malocclusion, and skeletal classifications, as well as treatment-related factors do not indicate a significant correlation with the risk of developing EARR.
Acute heart failure: current pharmacological treatment and perspectives
Authors: Deniau Benjamin , Costanzo Maria Rosa , Sliwa Karen , Asakage Ayu , Mullens Wilfried , Mebazaa Alexandre 
Published: October 2023

Abstract
Acute heart failure (AHF) represents the most frequent cause of unplanned hospital admission in patients older than 65 years. Symptoms and clinical signs of AHF (e.g. dyspnoea, orthopnoea, oedema, jugular vein distension, and variation of body weight) are mostly related to systemic venous congestion secondary to various mechanisms including extracellular fluids, increased ventricular filling pressures, and/or auto-transfusion of blood from the splanchnic into the pulmonary circulation. Thus, the initial management of AHF patients should be mostly based on decongestive therapies on admission followed, before discharge, by rapid implementation of guideline-directed oral medical therapies for heart failure. The therapeutic management of AHF requires the identification and rapid diagnosis of the disease, the diagnosis of the cause (or triggering factor), the evaluation of severity, the presence of comorbidities, and, finally, the initiation of a rapid treatment. The most recent guidelines from ESC and ACC/AHA/HFSA have provided updated recommendations on AHF management. Recommended pharmacological treatment for AHF includes diuretic therapy aiming to relieve congestion and achieve optimal fluid status, early and rapid initiation of oral therapies before discharge combined with a close follow-up. Non-pharmacological AHF management requires risk stratification in the emergency department and non-invasive ventilation in case of respiratory failure. Vasodilators should be considered as initial therapy in AHF precipitated by hypertension. On the background of recent large randomized clinical trials and international guidelines, this state-of-the-art review describes current pharmacological treatments and potential directions for future research in AHF.
New insights into the Undecaprenol monophosphate recycling pathway of Streptococcus pneumoniae
Authors: Wilhelm Linus , Ducret Adrien , Grangeasse Christophe 
Published: October 2023

Abstract
Recycling of undecaprenol pyrophosphate is critical to regenerate the pool of undecaprenol monophosphate required for cell wall biosynthesis. Undecaprenol pyrophosphate is dephosphorylated by membrane-associated undecaprenyl pyrophosphate phosphatases such as UppP or type 2 Phosphatidic Acid Phosphatases (PAP2) and then transferred across the cytoplasmic membrane by Und-P flippases such as PopT (DUF368-containing protein) or UptA (a DedA family protein). While the deletion of uppP in S. pneumoniae has been reported to increase susceptibility to bacitracin and reduce infectivity in a murine infection model, the presence of PAP2 family proteins or Und-P flippases and their potential interplay with UppP in S. pneumoniae remained unknown. In this report, we identified two PAP2 family proteins and a DUF368-containing protein and investigated their roles together with that of UppP in cell growth, cell morphology and susceptibility to bacitracin in S. pneumoniae. Our results suggest that the undecaprenol monophosphate recycling pathway in S. pneumoniae could result from a functional redundancy between UppP, the PAP2-family protein Spr0434 and the DUF368-containing protein Spr0889.
Earthquake swarms along the Chilean subduction zone, 2003–2020
Authors: Marsan D , Reverso T , Socquet A 
Published: October 2023

SUMMARY
We search for earthquake swarms along the Chilean subduction, from −18° to −39° of latitude, 2003–2020 by developing an objective, model-based method that detects potential swarms as anomalous changes in earthquake rate. A set of 16 swarms is obtained after careful inspection of the candidate swarms; this assessment allows to reject cases for which model errors, rather than ‘true’ anomalous rate changes, are likely the cause of the detection. Averaging the activity over these 16 episodes, we find indirect evidence for a mostly aseismic driving mechanism, and a mean aseismic to seismic ratio estimated to range between 40 and 90 when using the seismicity rate as a proxy for slip. All the swarms are found in the 20–50 km depth range with the notable exception of one 60–100-km-deep swarm that occurs several days after the 2010 Maule earthquake and downdip of it. The dominant depth range (20–50 km) is in agreement with previous studies that suggest this range to be a transition zone from the shallower, locked part of the subduction, to the freely slipping interface at greater depth and intraslab earthquake activity. The swarms can be separated into three spatial groups, two of which being related to a subducting oceanic ridge. This structural control by fluid-rich geological features is modulated by stress control, that is swarms cluster in time with intermediate to large ruptures, both prior and following them, pointing to a close interplay between seismic slip and aseismic deformation in specific, well separated segments of the Chilean subduction.
Observer-based SMC design for stochastic systems with Levy noise
Authors: Sangeetha G , Mathiyalagan K , Ma Yong-Ki , Zhang Huiyan 
Published: October 2023

Abstract
This work addresses the problem of sliding mode control (SMC) design for a continuous-time non-linear stochastic system with Levy-type noise. A state observer model is constructed to estimate the unavailable state information. Furthermore, Levy-type noise is considered to analyse small perturbations and to characterize the appearance of large samples that will occur in the system. Lyapunov stability and SMC theory are used to provide some sufficient conditions that ensure the stochastic stability of the error system and reachability of the predefined sliding surface. Finally, an example is given to demonstrate the feasibility of the proposed approach.
Bunyavirales: Scientific Gaps and Prototype Pathogens for a Large and Diverse Group of Zoonotic Viruses
Authors: Hartman Amy L , Myler Peter J 
Published: October 2023

Abstract
Research directed at select prototype pathogens is part of the approach put forth by the National Institute of Allergy and Infectious Disease (NIAID) to prepare for future pandemics caused by emerging viruses. We were tasked with identifying suitable prototypes for four virus families of the Bunyavirales order (Phenuiviridae, Peribunyaviridae, Nairoviridae, and Hantaviridae). This is a challenge due to the breadth and diversity of these viral groups. While there are many differences among the Bunyavirales, they generally have complex ecological life cycles, segmented genomes, and cause a range of human clinical outcomes from mild to severe and even death. Here, we delineate potential prototype species that encompass the breadth of clinical outcomes of a given family, have existing reverse genetics tools or animal disease models, and can be amenable to a platform approach to vaccine testing. Suggested prototype pathogens outlined here can serve as a starting point for further discussions.