bluuebunny/crossref_metadata_2025_split huggingface dataset:
On the Anisotropic Impact Behavior of an Additively Manufactured AlSi10Mg Alloy in Different Heat Treatment Conditions
Authors: Giovagnoli Maverick , Tocci Marialaura , Fortini Annalisa , Merlin Mattia , Ferroni Matteo , Pola Annalisa 
Published: February 2022

AbstractThe present work deals with the anisotropic high-strain rate behavior of laser-powder bed fusion (L-PBF) produced AlSi10Mg alloy in different heat treatment conditions. Impact specimens were produced with different orientations towards building platform and U-notch positions to assess the anisotropic properties. Besides the as-built material, several heat treatments were considered, including annealing, standard T6, hot isostatic pressing (HIP), HIP plus T6, and a recently proposed T6 at high pressure. The high-strain rate behavior was investigated by conducting Charpy impact tests, while material characterization was performed by scanning electron microscopy and x-ray diffraction. Results show that as-built and annealed alloys display significant anisotropic impact properties, whereas samples heat-treated at high temperatures generally have more consistent behavior. A coupled microstructural and fractographic investigation highlights that mitigation of anisotropy descends from the recovery of microstructural heterogeneity of the Si phase after heat treatment at high temperatures. This does not happen for both grain morphology or crystallographic structure, which are not significantly altered after the heat treatment. The present study aims to fill the gap in the literature regarding the anisotropic high-strain rate behavior of additively manufactured Al alloys and provide useful insights for mitigation of anisotropy by heat treatment.
Does Excess Tissue Sodium Storage Regulate Blood Pressure?
Authors: Rossitto Giacomo , Delles Christian 
Published: February 2022

AbstractPurpose of ReviewThe regulation of blood pressure is conventionally conceptualised into the product of “circulating blood volume” and “vasoconstriction components”. Over the last few years, however, demonstration of tissue sodium storage challenged this dichotomous view.Recent FindingsWe review the available evidence pertaining to this phenomenon and the early association made with blood pressure; we discuss open questions regarding its originally proposed hypertonic nature, recently challenged by the suggestion of a systemic, isotonic, water paralleled accumulation that mirrors absolute or relative extracellular volume expansion; we present the established and speculate on the putative implications of this extravascular sodium excess, in either volume-associated or -independent form, on blood pressure regulation; finally, we highlight the prevalence of high tissue sodium in cardiovascular, metabolic and inflammatory conditions other than hypertension.SummaryWe conclude on approaches to reduce sodium excess and on the potential of emerging imaging technologies in hypertension and other conditions.
Myocardial perfusion quantification with Rb-82 PET: good interobserver agreement of Carimas software on global, regional, and segmental levels
Authors: Nesterov Sergey V. , Deshayes Emmanuel , Juarez-Orozco Luis Eduardo , deKemp Robert A. , Sciagrà Roberto , Malaspina Simona , Settimo Leonardo , Han Chunlei , Ryzhkova Darja V. , Kostina Irina S. , Gwet Kilem L. , Prior John O. , Knuuti Juhani M. 
Published: February 2022

Abstract
Purpose
To estimate the interobserver agreement of the Carimas software package (SP) on global, regional, and segmental levels for the most widely used myocardial perfusion PET tracer—Rb-82.

Materials and methods
Rest and stress Rb-82 PET scans of 48 patients with suspected or known coronary artery disease (CAD) were analyzed in four centers using the Carimas SP.
We considered values to agree if they simultaneously had an intraclass correlation coefficient (ICC) > 0.75 and a difference < 20% of the median across all observers.

Results
The median values on the segmental level were 1.08 mL/min/g for rest myocardial blood flow (MBF), 2.24 mL/min/g for stress MBF, and 2.17 for myocardial flow reserve (MFR). For the rest MBF and MFR, all the values at all the levels fulfilled were in excellent agreement. For stress MBF, at the global and regional levels, all the 24 comparisons showed excellent agreement. Only 1 out of 102 segmental comparisons (seg. 14) was over the adequate agreement limit—23.5% of the median value (ICC = 0.95).

Conclusion
Interobserver agreement for Rb-82 PET myocardial perfusion quantification analyzed with Carimas is good at any LV segmentation level—global, regional, and segmental. It is good for all the estimates—rest MBF, stress MBF, and MFR.
Preference based multi-objective reinforcement learning for multi-microgrid system optimization problem in smart grid
Authors: Xu Jiangjiao , Li Ke , Abusara Mohammad 
Published: February 2022

AbstractGrid-connected microgrids comprising renewable energy, energy storage systems and local load, play a vital role in decreasing the energy consumption of fossil diesel and greenhouse gas emissions. A distribution power network connecting several microgrids can promote more potent and reliable operations to enhance the security and privacy of the power system. However, the operation control for a multi-microgrid system is a big challenge. To design a multi-microgrid power system, an intelligent multi-microgrids energy management method is proposed based on the preference-based multi-objective reinforcement learning (PMORL) techniques. The power system model can be divided into three layers: the consumer layer, the independent system operator layer, and the power grid layer. Each layer intends to maximize its benefit. The PMORL is proposed to lead to a Pareto optimal set for each object to achieve these objectives. A non-dominated solution is decided to execute a balanced plan not to favor any particular participant. The preference-based results show that the proposed method can effectively learn different preferences. The simulation outcomes confirm the performance of the PMORL and verify the viability of the proposed method.
Patient-Specific Modelling and Parameter Optimisation to Simulate Dilated Cardiomyopathy in Children
Authors: Bozkurt Selim , Paracha Waleed , Bakaya Kaushiki , Schievano Silvia 
Published: February 2022

Abstract
Purpose
Lumped parameter modelling has been widely used to simulate cardiac function and physiological scenarios in cardiovascular research. Whereas several patient-specific lumped parameter models have been reported for adults, there is a limited number of studies aiming to simulate cardiac function in children. The aim of this study is to simulate patient-specific cardiovascular dynamics in children diagnosed with dilated cardiomyopathy, using a lumped parameter model.

Methods
Patient data including age, gender, heart rate, left and right ventricular end-systolic and end-diastolic volumes, cardiac output, systolic and diastolic aortic pressures were collected from 3 patients at Great Ormond Street Hospital for Children, London, UK. Ventricular geometrical data were additionally retrieved from cardiovascular magnetic resonance images. 23 parameters in the lumped parameter model were optimised to simulate systolic and diastolic pressures, end-systolic and end-diastolic volumes, cardiac output and left and right ventricular diameters in the patients using a direct search optimisation method.

Results
Difference between the haemodynamic parameters in the optimised cardiovascular system models and clinical data was less than 10%.

Conclusion
The simulation results show the potential of patient-specific lumped parameter modelling to simulate clinical cases. Modelling patient specific cardiac function and blood flow in the paediatric patients would allow us to evaluate a variety of physiological scenarios and treatment options.
Inulin-g-poly-D,L-lactide, a sustainable amphiphilic copolymer for nano-therapeutics
Authors: Sardo Carla , Mencherini Teresa , Tommasino Carmela , Esposito Tiziana , Russo Paola , Del Gaudio Pasquale , Aquino Rita Patrizia 
Published: February 2022

AbstractCancer therapies started to take a big advantage from new nanomedicines on the market. Since then, research tried to better understand how to maximize efficacy while maintaining a high safety profile. Polyethylene glycol (PEG), the gold standard for nanomedicines coating design, is a winning choice to ensure a long circulation and colloidal stability, while in some cases, patients could develop PEG-directed immunoglobulins after the first administration. This lead to a phenomenon called accelerated blood clearance (ABC effect), and it is correlated with clinical failure because of the premature removal of the nanosystem from the circulation by immune mechanism. Therefore, alternatives to PEG need to be found. Here, looking at the backbone structural analogy, the hydrophilicity, flexibility, and its GRAS status, the natural polysaccharide inulin (INU) was investigated as PEG alternative. In particular, the first family of Inulin-g-poly-D,L-lactide amphiphilic copolymers (INU-PLAs) was synthesized. The new materials were fully characterized from the physicochemical point of view (solubility, 1D and 2D NMR, FT-IR, UV–Vis, GPC, DSC) and showed interesting hybrid properties compared to precursors. Moreover, their ability in forming stable colloids and to serve as a carrier for doxorubicin were investigated and compared with the already well-known and well-characterized PEGylated counterpart, polyethylene glycol-b-poly-D,L-lactide (PEG-PLA). This preliminary investigation showed INU-PLA to be able to assemble in nanostructures less than 200 nm in size and capable of loading doxorubicin with an encapsulation efficiency in the same order of magnitude of PEG-PLA analogues.
Graphical abstract
Factorization of quaternionic polynomials of bi-degree (n,1)
Authors: Lercher Johanna , Scharler Daniel , Schröcker Hans-Peter , Siegele Johannes 
Published: February 2022

AbstractWe consider polynomials of bi-degree (n, 1) over the skew field of quaternions where the indeterminates commute with each other and with all coefficients. Polynomials of this type do not generally admit factorizations. We recall a necessary and sufficient condition for existence of a factorization with univariate linear factors that has originally been stated by Skopenkov and Krasauskas. Such a factorization is, in general, non-unique by known factorization results for univariate quaternionic polynomials. We unveil existence of bivariate polynomials with non-unique factorizations that cannot be explained in this way and characterize them geometrically and algebraically. Existence of factorizations is related to the existence of special rulings of two different types (left/right) on the ruled surface parameterized by the bivariate polynomial in the projective space over the quaternions. Special non-uniqueness in above sense can be explained algebraically by commutation properties of factors in suitable factorizations. A necessary geometric condition for this to happen is degeneration to a point of at least one of the left/right rulings.
Exponential sums in prime fields for modular forms
Authors: Bajpai Jitendra , Bhakta Subham , García Victor C. 
Published: February 2022

AbstractThe main objective of this article is to study the exponential sums associated to Fourier coefficients of modular forms supported at numbers having a fixed set of prime factors. This is achieved by establishing an improvement on Shparlinski’s bound for exponential sums attached to certain linear recurrence sequences over finite fields.
Evolution of individual equatorial atmospheric Kelvin waves in the stratosphere from FORMOSAT-7/COSMIC-2 temperatures
Authors: Das Uma , Pan Chen-Jeih , Yang Shih-Sian 
Published: February 2022

AbstractTemperatures obtained from Formosa Satellite-7/Constellation Observing System for Meteorology, Ionosphere and Climate-2 (FORMOSAT-7/COSMIC-2) in the stratosphere are analysed to investigate equatorial atmospheric Kelvin waves (KW) during the period from October 2019 to March 2021. Least square fitting followed by a two-dimensional fast Fourier transform are employed to extract the characteristics of these waves. Comparison with ERA5 mean zonal winds clearly indicates wave-mean flow interactions. KW activity was stronger from November 2019 to July 2020 and observed in the entire stratosphere due to the prevailing westward wind. After July 2020, although the ambient winds were favourable, wave activity was weaker and is attributed to the La Nina state of El Nino Southern Oscillation (ENSO) in the equatorial Pacific. The emphasis of the current study is on individual KW events and their evolution as they propagate eastward and upward. Waves of many periods are excited simultaneously in the lower atmosphere and as they propagate upward with different speeds, disperse along the path. During November–December 2019, KW periods ranged from 8 to 21 days. Vertical wavelength of the slow waves (> 15 days) is found to be ~ 3 km just above the tropopause that increased to 10–12 km at ~ 40 km. This increase in vertical wavelength is due to Doppler effect of the mean wind on the wave. For the fast waves of periods 8, 6.5 and 4.5 days, the wavelengths are larger and 18, 24 and 30 km, respectively. COSMIC-2 data, with its high vertical resolution, provided this opportunity to investigate the fine structure of the KW delivering many insights into the atmospheric dynamics involved.
Neurosurgeons’ Perspectives on Vascular Entrustable Professional Activities
Authors: Cadieux Magalie , McKinley Sophia K. , Odewade Niyi , Riva-Cambrin Jay , Phitayakorn Roy 
Published: February 2022

ABSTRACT:This article discusses subspecialty Canadian neurosurgeons’ perceptions of entrustable professional activities (EPAs) assessments and variabilities prior to the implementation of the Competence by Design (CBD) system in Canada. Vascular neurosurgeons were asked to reflect on how they would evaluate and give feedback to neurosurgery residents concerning the EPA “Performing surgery for patients with an intracranial aneurysm.” Interviews were transcribed and analyzed using a deductive approach. Themes were derived from these interviews and reflected on the subjectivity and biases present in the EPA assessment forms. Indeed, faculty may require more training in the transitioning to a CBD evaluation system.
A systematic review of the role of culture in the mental health service utilisation among ethnic minority groups in the United Kingdom
Authors: Nwokoroku Sandra Chidimma , Neil Barbara , Dlamini Chris , Osuchukwu Vivian Chinonso 
Published: February 2022

AbstractAlthough mental health (MH) services and psychological support are tailored to fit the MH needs of those requiring these services in the UK, underutilisation persists. Current evidence suggests that ethnic minorities underutilise MH services with culture implicated in this trend. However, there is limited evidence from systematic reviews integrating the findings of primary studies on the role of culture in MH service utilisation among ethnic minorities. This review aims to synthesise and summarise evidence on the role of culture in MH service utilisation among ethnic minorities in the UK. Two reviewers searched CINAHL, APA PsycINFO and Medline databases using the Preferred Reporting Items for Systematic Review and Meta-Analysis. Two other reviewers screened the abstracts and full text, while three conducted data extraction and assessed study quality using the Critical Appraisal Skills Programme checklist for qualitative studies. One's culture was repeatedly identified to play a role in MH service utilisation among the ethnic minorities in the UK. The impact of cultural factors on service utilisation was through its effects on structure/institution, beliefs, stigma and perception of service. In addition, discrimination and other racism-related negative experiences during service use were found to inform perception and use of MH services. These findings suggest that MH services should be tailored to cultural differences to optimise service utilisation.
Fear and Loathing or Strategic Priming? Unveiling the Audience in Duterte's Crime Rhetoric
Authors: Panao Rogelio Alicor L. , Pernia Ronald A. 
Published: February 2022

AbstractThis paper examines speechmaking on a contentious policy by arguably one of the most controversial figures to have assumed the Philippine presidency. Drawing on quantitative textual approaches on a corpus of 845 presidential speeches delivered between June 2016 and July 2020, we provide evidence that Rodrigo Duterte's evocative utterances against drug lords and criminals are not just deliberate illocutionary acts intended to court public support, but also priming tactics aimed towards a politically and economically significant audience whose acquiescence gives symbolic legitimacy to a controversial anti-crime policy. Using quantitative textual approaches and econometric analysis, we find that violent-crime rhetoric is more likely to accompany public pronouncements made before a political audience consisting of law enforcement authorities and government officials, as well as an economic audience made up of business chambers, overseas Filipino workers, and labor groups. Overall, the findings nuance an image of Duterte beyond that of a penal populist.
Establishing and integrating a transoral robotic surgery programme into routine oncological management of head and neck cancer – a UK perspective
Authors: Arora A , Brunet A , Oikonomou G , Tornari C , Faulkner J , Jeyarajah J , Touska P , Sandison A , Rovira A , Simo R , Jeannon J-P 
Published: February 2022

AbstractBackgroundThe introduction of transoral robotic surgery into routine management of patients is complex. It involves organisational, logistical and clinical challenges. This study presents our experience of implementing such a programme and provides a blueprint for other centres willing to establish similar services.MethodsImplementation of the robotic surgery programme focused on several key domains: training, logistics, governance, multidisciplinary team awareness, pre-operative imaging, anaesthesia, post-operative care, finance, patient selection and consent. Programme outcomes were evaluated by assessing operative outcomes of the first 117 procedures performed.ResultsThe success of the transoral robotic surgery programme has been possible because of the scrupulous planning phase before the first procedure, and the time invested on team awareness and training.ConclusionImplementation of a new transoral robotic surgery service has led to: the development of a dedicated transoral robotic surgery patient care protocol, the performance of progressively more complex procedures, the inclusion of transoral robotic surgery training and the establishment of several research projects.
Constructing a caste in the past: Revisionist histories and competitive authority in South India
Authors: Gross Tori 
Published: February 2022

AbstractThis article examines the recent political history of the Devendrakula Vellalars (henceforth, Devendras). Officially recognized by the state and union governments in 2020 and 2021, this novel consolidated caste formation includes a broad range of formerly endogamous ‘Untouchable’ communities spread throughout Tamil Nadu but most highly concentrated in its southern half. I argue that the communities constituting the Devendras have been socio-economically diverse for at least the past century and thus do not necessarily share the same political priorities. They have, nonetheless, attempted to unite in opposition to the politically powerful Thevars (Other Backward Class or OBC) who are themselves a consolidated caste formation that grew out of colonial domination. The Devendras's economic diversity has, however, troubled their oppositional political consolidation, compelling the production of revisionist mythico-histories that appeal to widely held desires for authority and honour. Disavowing the Dalit past and recasting the Devendras as the descendants of heroes, such mythico-histories produce a collective identity characterized by the ideals of righteous self-sacrifice, valour, and agrarian civility. Devendras's identarian claims are, however, reliant on the acceptance of internal and external audiences, some of which violently oppose their assertions. They nevertheless seek recognition, and in so doing empower themselves by gathering strength in numbers.
MAPPING RESEARCH ON L2 PRONUNCIATION
Authors: Demir Yusuf , Kartal Galip 
Published: February 2022

AbstractThis study reports on a bibliometric mapping analysis of L2 pronunciation research. Analyses on 629 articles published between 1977 and 2020 in 15 prestigious SSCI-indexed applied linguistics journals identified significant research themes and trends, influential authors, documents, and publication sources. The results of the analyses of citation impact, cocitation, and research trends provide valuable insights into understanding the dynamics, evolution patterns, and the intellectual background of L2 pronunciation research, thereby guiding future research and practice.
Understanding habitat use of the Endangered Alligator Rivers Yellow Chat Epthianura crocea tunneyi to inform monitoring and management
Authors: LEPPITT ROBIN , EINODER LUKE , KYNE PETER M. , WOINARSKI JOHN C. Z. , GARNETT STEPHEN 
Published: February 2022

Summary
Knowledge of where a threatened species occurs in a landscape is crucial for determining its habitat requirements and informing its conservation planning and management. We conducted the first broad-scale survey of the Endangered Alligator Rivers Yellow Chat Epthianura crocea tunneyi across much of its known range on drying coastal floodplains in northern Australia. Presence-absence records from 257 sites surveyed in the late dry season (August–December) of 2018 and 2019 were modelled using occupancy/detectability models. Occupancy was estimated to be 0.10 ± 0.04 with a high detection probability (0.89 ± 0.07). Modelling of 13 site-level environmental covariates found that chats were more likely to be detected at sites where the native shrub Sesbania sesban was present, were close to hydrogeological features such as depressions or channels, were long unburnt (5+ years) and/or with topsoil damage caused by feral pigs. Our estimates of chat occupancy, detectability, and the covariates that influence their occupancy, have improved our understanding of the role that fire and feral animals have on chat distribution and habitat selection, and can be used as a baseline for future monitoring. We also provide recommendations on how to design and implement future monitoring of this subspecies.