bluuebunny/crossref_metadata_2025 huggingface dataset:
Construction of Double S‐Scheme ZIF‐67@GDY/CuI Heterojunction by Graphdiyne (g‐CnH2n−2) Nanosheets‐Coated ZIF‐67 on Synergized Charge Transfer for Enhanced Photocatalytic Hydrogen Evolution
Authors: Shao Yifan , Hao Xuqiang , Jin Zhiliang
Published: February 2023

Graphdiyne (GDY) is a carbon allotrope material composed of sp and sp2 hybrid carbon atoms, which has been proven to be a good carrier for anchoring metal catalysts due to its abundant alkyne bonds. Herein, a double S‐scheme ZIF‐67@GDY/CuI heterojunction with graphdiyne (g‐CnH2n−2) nanosheets‐coated ZIF‐67 is prepared by a simple mixing method. The ZIF‐67 dodecahedron coated with GDY nanosheets constructed S‐scheme heterojunction by matching valence and conduction bands. The double S‐scheme heterojunction can maintain the strong redox ability of photogenerated electron–hole pairs well and promote more efficient charge transport. The excellent charge transport path is also attributed to the unique double S‐scheme heterojunction, which is confirmed by in situ X‐ray photoelectron spectroscopy. Moreover, the electron migration from ZIF‐67 to GDY generates an internal electric field (IEF), which improves the light energy utilization and charges separation efficiency under the condition of the IEF, band edge bending, and coulomb interaction. The optimal hydrogen production rate of ZIF‐67@GDY/CuI‐20 is 7.27 mmol g−1 h−1 under visible light irradiation, which is significantly increased by 4.75 times compared with the unmodified ZIF‐67. Herein, a new possibility for the construction of double S‐scheme heterojunction based on graphdiyne to improve photocatalytic performance is provided.
A Coordinated Frequency Control in Microgrid Based on Asymmetric Synthetic Inertia Considering Rotational Speed of Wind Turbine
Authors: Qi Jingting , Tsuji Takao
Published: February 2023

Frequency regulation is an important issue in isolated microgrids with inertia‐less variable renewable energy sources such as wind turbines (WTs) or photovoltaics (PVs) due to the small inertia of the overall system. Synthetic inertia control (SI) using the kinetic energy of WT can provide the microgrid with virtual inertia to mitigate frequency fluctuations. In order to improve the performance of SI, the authors have proposed an asymmetric synthetic inertia control (ASI) in which the virtual moment of inertia is alternating depending on the system frequency and the rate of change of frequency. By increasing the control gain only when the system frequency is moving away from the nominal value, it is expected that ASI contributes to the faster convergence of frequency control. However, another issue is interference between ASI and the rotational speed control for maximum power point tracking of WT. Hence, in this study, a coordinated frequency and rotational speed control strategy was proposed. The rotational speed control can be activated based on a mode‐switching logic when the interference does not occur. The effectiveness of the proposed control strategy was verified by numerical simulations using a microgrid model consisting of diesel engine generators, WTs, a photovoltaic, and a load. © 2023 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.
Evaporation processes in the Silala River basin
Authors: Suárez Francisco , Oportus Tomás , Mendoza Magdalena , Aguirre Ignacio , Godoy Víctor , Muñoz José F.
Published: February 2023

Evapotranspiration has been poorly characterized in the Altiplano, and the legal dispute over the status and use of the waters of the Silala River provided an opportunity for improving knowledge of this hydrological process, in a remote area with a lack of hydrometeorological data. Actual evapotranspiration (ETa) measurements using eddy covariance (EC) were performed in the riparian wetland (EC1) and over the alluvial deposits (EC2) of the Silala River basin, and in the Putana River wetland (EC3), with similar characteristics to the Silala River headwaters. The portable chamber method was used to characterize soil and plant evaporation near EC2. Satellite‐derived ETa estimates were evaluated with the in‐situ data, and used to investigate spatiotemporal dynamics of the wetland vegetation cover. At EC1 and EC3, annual ETa values were 703 and 841 mm, respectively; and satellite‐derived ETa showed differences of 5% and −35% from these values. ETa exhibited strong seasonal variations at EC1 and EC3, and was sensitive to precipitation at EC2. ETa did not follow the temporal evolution of the reference evapotranspiration at EC2, suggesting that lateral subsurface flow supports ETa in dry periods. Portable chamber measurements revealed that bare soil evaporation is the main component of ETa in the alluvial deposits. ETa data collected within the basin, as described in other papers of this special issue, allowed validation of a hydrological model used to estimate the basin's groundwater recharge, and estimation of the surface flow increase due to river channelization, which were important scientific evidence provided in the legal dispute.

This article is categorized under:

Science of Water > Hydrological Processes

Science of Water > Methods
Heat transfer aspects in Carreau nanofluid having hybrid nanoparticles through a porous medium
Authors: Waqas Hassan , Farooq Umar , Yang Song , Muhammad Taseer , Imran Muhammad
Published: February 2023

The effects of nanofluid radiation and magnetic fields are important in biotechnology and medical treatment. The efficiency of hybrid nanomaterials flow (Carreau fluid) over a porous medium was investigated, and the findings were presented. The partial slip impact was used to thoroughly scrutinize the properties of the nanofluid flow. Using suitable variables, the PDEs in the Carreau model were reduced to ODEs, and the governing PDEs were transformed to ODEs using similarity transformations. The consequent ODEs are numerically investigated using the RKF‐45 Method. Furthermore, the results of the parameters involved in thermal and velocity were discussed. To the finest of the journalists' knowledge, no one has endeavored to depict medical occurrences and medical approaches by watching the flow through a malleable porous medium including blood as a base fluid and hybrid nanostructure materials. Indeed, the endeavors of this study are exceptional, and the obtained simulations have never been published by anyone academic.
Gravity coupled to a scalar field from a Chern-Simons action: describing rotating hairy black holes and solitons with gauge fields
Authors: Cárdenas Marcela , Fuentealba Oscar , Martínez Cristián , Troncoso Ricardo
Published: February 2023

Abstract

Einstein gravity minimally coupled to a scalar field with a two-parameter Higgs-like self-interaction in three spacetime dimensions is recast in terms of a Chern-Simons form for the algebra g+ ⊕ g− where, depending on the sign of the self-interaction couplings, g± can be so(2, 2), so(3, 1) or iso(2, 1). The field equations can then be expressed through the field strength of non-flat composite gauge fields, and conserved charges are readily obtained from boundary terms in the action that agree with those of standard Chern-Simons theory for pure gravity, but with non-flat connections. Regularity of the fields then amounts to requiring the holonomy of the connections along contractible cycles to be trivial. These conditions are automatically fulfilled for the scalar soliton and allow to recover the Hawking temperature and chemical potential in the case of the rotating hairy black holes presented here, whose entropy can also be obtained by the same formula that holds in the case of a pure Chern-Simons theory. In the conformal (Jordan) frame the theory is described by General Relativity with cosmological constant conformally coupled to a self-interacting scalar field, and its formulation in terms of a Chern-Simons form for suitably composite gauge fields is also briefly addressed.
Renormalization of the Standard Model Effective Field Theory from geometry
Authors: Helset Andreas , Jenkins Elizabeth E. , Manohar Aneesh V.
Published: February 2023

Abstract

S-matrix elements are invariant under field redefinitions of the Lagrangian. They are determined by geometric quantities such as the curvature of the field-space manifold of scalar and gauge fields. We present a formalism where scalar and gauge fields are treated together, with a metric on the combined space of both types of fields. Scalar and gauge scattering amplitudes are given by the Riemann curvature Rijkl of this combined space, with indices i, j, k, l chosen to be scalar or gauge indices depending on the type of external particle. One-loop divergences can also be computed in terms of geometric invariants of the combined space, which greatly simplifies the computation of renormalization group equations. We apply our formalism to the Standard Model Effective Field Theory (SMEFT), and compute the renormalization group equations for even-parity bosonic operators to mass dimension eight.
On classification of fermionic rational conformal field theories
Authors: Duan Zhihao , Lee Kimyeong , Lee Sungjay , Li Linfeng
Published: February 2023

Abstract

We systematically study how the integrality of the conformal characters shapes the space of fermionic rational conformal field theories in two dimensions. The integrality suggests that conformal characters on torus with a given choice of spin structures should be invariant under a principal congruence subgroup of PSL(2, ℤ). The invariance strongly constrains the possible values of the central charge as well as the conformal weights in both Neveu-Schwarz and Ramond sectors, which improves the conventional holomorphic modular bootstrap method in a significant manner. This allows us to make much progress on the classification of fermionic rational conformal field theories with the number of independent characters less than five.
Sharp Decay for Teukolsky Equation in Kerr Spacetimes
Authors: Ma Siyuan , Zhang Lin
Published: February 2023

In this work, we derive the global sharp decay, as both a lower and an upper bounds, for the spin $$\pm {\mathfrak {s}}$$

±
s

components, which are solutions to the Teukolsky equation, in the black hole exterior and on the event horizon of a slowly rotating Kerr spacetime. These estimates are generalized to any subextreme Kerr background under an integrated local energy decay estimate. Our results apply to the scalar field $$({\mathfrak {s}}=0)$$

(
s
=
0
)

, the Maxwell field $$({\mathfrak {s}}=1)$$

(
s
=
1
)

and the linearized gravity $$({\mathfrak {s}}=2)$$

(
s
=
2
)

and confirm the Price’s law decay that is conjectured to be sharp. Our analyses rely on a novel global conservation law for the Teukolsky equation, and this new approach can be applied to derive the precise asymptotics for solutions to semilinear wave equations.
Effects of perinatal exposure to bisphenol A or S in EAE model of multiple sclerosis
Authors: Bonaldo Brigitta , Casile Antonino , Montarolo Francesca , Bettarelli Martina , Napoli Francesca , Gotti Stefano , Panzica GianCarlo , Marraudino Marilena
Published: February 2023

Epidemiological studies support the idea that multiple sclerosis (MS) is a multifactorial disease, overlapping genetic, epigenetic, and environmental factors. A better definition of environmental risks is critical to understand both etiology and the sex-related differences of MS. Exposure to endocrine-disrupting compounds (EDCs) fully represents one of these risks. EDCs are natural or synthetic exogenous substances (or mixtures) that alter the functions of the endocrine system. Among synthetic EDCs, exposure to bisphenol A (BPA) has been implicated in the etiology of MS, but to date, controversial data has emerged. Furthermore, nothing is known about bisphenol S (BPS), one of the most widely used substitutes for BPA. As exposure to bisphenols will not disappear soon, it is necessary to clarify their role also in this pathological condition defining their role in disease onset and course in both sexes. In this study, we examined, in both sexes, the effects of perinatal exposure to BPA and BPS in one of the most widely used mouse models of MS, experimental autoimmune encephalomyelitis (EAE). Exposure to bisphenols seemed to be particularly deleterious in males. In fact, both BPA- and BPS-treated males showed anticipation of the disease onset and an increased motoneuron loss in the spinal cord. Overall, BPA-treated males also displayed an exacerbation of EAE course and an increase in inflammation markers in the spinal cord. Analyzing the consequences of bisphenol exposure on EAE will help to better understand the role of both xenoestrogens and endogenous estrogens on the sexually dimorphic characteristics of MS.
The Duality of the Volumes and the Numbers of Vertices of Random Polytopes
Authors: Buchta Christian
Published: February 2023

An identity due to Efron dating from 1965 relates the expected volume of the convex hull of n random points to the expected number of vertices of the convex hull of $$n+1$$

n
+
1

random points. Forty years later this identity was extended from expected values to higher moments. The generalized identity has attracted considerable interest. Whereas the left-hand side of the generalized identity—concerning the volume—has an immediate geometric interpretation, this is not the case for the right-hand side—concerning the number of vertices. A transformation of the right-hand side applying an identity for elementary symmetric polynomials overcomes the blemish. The arising formula reveals a duality between the volumes and the numbers of vertices of random polytopes.
Removal of Sulfate and Metals from Wastewater of a Mining Enterprise by a Dual Sorbent System: A Case Study
Authors: Krasavtseva Eugenia , Gogoi Harshita , Svetlov Anton , Leiviskä Tiina , Makarov Dmitriy
Published: February 2023

This paper presents the results of wastewater treatment at a mining enterprise developing a complex ore deposit in the Murmansk region, Russia. The main pollutants are sulfate, manganese, and strontium. For this complex wastewater treatment, a two-stage scheme was proposed and tested using two sorbents (at a pH of 6): an aminated peat biosorbent to remove sulfate and a commercial sorbent based on the mineral brucite to remove metals. Optimal conditions were established for purifying the wastewater of sulfate and manganese and strontium ions to the level of maximum available concentrations in water bodies for fishery purposes.
Apparent diffusion coefficients of 31P metabolites in the human calf muscle at 7 T
Authors: Huang Zhiwei , Gambarota Giulio , Xiao Ying , Wenz Daniel , Xin Lijing
Published: February 2023

Purpose

In this study, we aimed to measure the apparent diffusion coefficients (ADCs) of major phosphorous metabolites in the human calf muscle at 7 T with a diffusion-weighted (DW)-STEAM sequence.

Methods

A DW-STEAM sequence with bipolar gradients was implemented at 7 T, and DW MR spectra were acquired in three orthogonal directions in the human calf muscle of six healthy volunteers (TE/TM/TR = 15 ms/750 ms/5 s) at three b-values (0, 800, and 1200 s/mm2). Frequency and phase alignments were applied prior to spectral averaging. Averaged DW MR spectra were analyzed with LCModel, and ADCs of 31P metabolites were estimated.

Results

Four metabolites (phosphocreatine (PCr), adenosine triphosphate (ATP), inorganic phosphate (Pi) and glycerol phosphorylcholine (GPC)) were quantified at all b-values with mean CRLBs below 10%. The ADC values of PCr, ATP, Pi, and GPC were (0.24 ± 0.02, 0.15 ± 0.04, 0.43 ± 0.14, 0.40 ± 0.09) × 10–3 mm2/s, respectively.

Conclusion

The ADCs of four 31P metabolites were successfully measured in the human calf muscle at 7 T, among which those of ATP, Pi and GPC were reported for the first time in humans. This study paves the way to investigate 31P metabolite diffusion properties in health and disease on the clinical MR scanner.
Soil solution data from Bohemian headwater catchments record atmospheric metal deposition and legacy pollution
Authors: Petrash Daniel A. , Krám Pavel , Pérez-Rivera Katherine X. , Bůzek František , Čuřík Jan , Veselovský Frantisek , Novák Martin
Published: February 2023

Soil solution chemistry depends largely on mineralogy and organic matter properties of soil horizons with which they interact. Differing lithologies within a given catchment area can influence variability in soil cation exchange capacities and affect solute transport. Zero-tension and tension lysimeters were used to evaluate the fast transport of solutes in the topsoil vs. slow diffusional matrix flow at the subsoil of three contrasting lithology catchments in a mid-elevation mountain forest. Our aim was to test the feasibility of lysimeters’ hydrochemical data as a gauge for legacy subsoil pollution. Due to contrasting lithologies, atmospheric legacy pollution prevailing at the soil-regolith interface is differently yet consistently reflected by beryllium, lead, and chromium soil solution concentrations of the three catchments. Geochemical (dis)equilibrium between the soil and soil matrix water governed the hydrochemistry of the soil solutions at the time of collection, potentially contributing to decreased dissolved concentrations with increased depths at sites with higher soil pH. A complementary isotopic δ18O runoff generation model constrained potential seasonal responses and pointed to sufficiently long water-regolith interactions as to permit important seasonal contributions of groundwater enriched in chemical species to the topsoil levels. Our study also reflects subsoil equilibration with atmospheric solutes deposited at the topsoil and thus provides guidance for evaluating legacy pollution in soil profiles derived from contrasting lithology.
Preparation of zirconium oxide nanoparticles from rosette concentrate using two distinct and sequential techniques: hydrothermal and fusion digestion
Authors: El Agamy Hayat H. , Mubark Amal E. , Gamil Elham A. , Abdel-Fattah Nasr A. , Eliwa Ahmed A.
Published: February 2023

The preparation of zirconium dioxide nanoparticles (ZrO2-NPs) as hard ceramics was accomplished from rosette zircon concentrate through two consecutive alkaline digestion reactions. The rosette zircon concentration in the Abu Khashaba area consists mainly of zircon and monazite minerals. Using different operating conditions, the hydrothermal digestion by autoclave and the conventional alkaline fusion methods was performed upon the non-magnetic concentrate of rosette in order to complete the removal of monazite firstly and to complete the purification of zircon metal secondly. All monazite content and undesirable impurities were removed by the hydrothermal method using optimal digestion conditions such as 4 mol/L NaOH solutions, 1/6 solid to liquid, 2 h dissolving time, and a temperature of 423 K. The residual zircon (84% Zr) was subjected to complete digestion using NaOH with a zircon-to-alkali ratio of 1/1.5 and a fusion temperature of 923 K. ZrO2-NPs were synthesized using the hydrothermal technique at 473 K for 7 h. The calcined ZrO2-NPs were characterized by X-ray diffraction, scan electron microscope, and transmittance electron microscope. Purified silica was also obtained as a by-product from washing solutions of fused zircon.
Medical fitness to drive, emergency service vehicles and crash risk
Authors: Noonan Donna , Ryan Margaret , Whelan Declan , O’Neill Desmond
Published: February 2023

Background

Emergency service vehicle (ESV) drivers are an important part of the health, fire and police services. ESV driving is associated with increased crash risk, but little guidance exists in the literature on relevant medical conditions among drivers and their potential for adding to higher crash risks.

Aims

We undertook a narrative review to examine the role of medical and other conditions in crash risk of ESV drivers.

Method

A literature search was conducted using the ScienceDirect and Transport Research International Documentation (TRID) databases. There was no time frame for the search, and results were restricted to review and research articles.

Results

Of 570 papers identified, 13 remained after screening and full-text review. A range of factors have been shown to have an impact on increased crash risk, including the nature of the task, physical features of the equipment, training, experience, environmental conditions and secondary tasks. There was scant information on medical conditions other than alcohol use disorders.

Conclusions

Given issues of speed, vehicle and environment, it would seem prudent to mandate levels of medical fitness to drive similar to and sometimes exceeding (i.e. colour blindness for traffic signals and alerts, hearing impairment as first responders) those for group 2 drivers with extra stipulations relating to specific service needs such as enhanced visual (such as colour blindness and contrast sensitivity) and auditory function. Further research is needed on the prevalence and emergence of relevant medical conditions among ESV drivers, with due consideration of their application to the driving tasks in each service.
Grandparental Support and Maternal Postpartum Mental Health
Authors: Riem Madelon M.E. , Bakermans-Kranenburg Marian J. , Cima Maaike , van IJzendoorn Marinus H.
Published: February 2023

Support from grandparents plays a role in mothers’ perinatal mental health. However, previous research on maternal mental health has mainly focused on influences of partner support or general social support and neglected the roles of grandparents. In this narrative review and meta-analysis, the scientific evidence on the association between grandparental support and maternal perinatal mental health is reviewed. Searches in PubMed, EMBASE, MEDLINE, Scopus, and PsycINFO yielded 11 empirical studies on N = 3381 participants, reporting on 35 effect sizes. A multilevel approach to meta-analysis was applied to test the association between grandparental support and maternal mental health. The results showed a small, statistically significant association (r = .16; 95% CI: 0.09–0.25). A moderator test indicated that the association was stronger for studies reporting on support from the maternal grandmother in particular (r = .23; 95% CI: 0.06–0.29). Our findings suggest that involved grandparents, in particular mother’s own mother, constitute a protective factor for the development of maternal postpartum mental health problems. These findings have clear implications for interventions. Future studies should examine whether stimulating high-quality support from grandparents is a fruitful avenue for enhancing maternal postpartum mental health.
Defining a clinical prediction rule to diagnose bacterial gastroenteritis requiring empirical antibiotics in an emergency department setting: A retrospective review
Authors: Sajeed Shanaz Matthew , De Dios Michael P. , Dan Ong Wei Jun , Punyadasa Amila Clarence
Published: February 2023

Background

Gastroenteritis (GE) is a non-specific term for various pathologic states of the gastrointestinal tract. Infectious agents usually cause acute GE. At present, there are no robust decision-making rules that predict bacterial GE and dictate when to start antibiotics for patients suffering from acute GE to the emergency department (ED). We aim to define a clinical prediction rule to aid in the diagnosis of bacterial GE, requiring empirical antibiotics in adult patients presenting to the emergency department with acute GE.

Methods

A two-year retrospective case review was performed on all cases from July 2015 to June 2017 that included patients with acute GE symptoms referred to the ED, after which their stool cultures were performed. The clinical parameters analyzed included patient with comorbid conditions, physical examination findings, historical markers, point-of-care and radiographic tests and other laboratory work. We then used multi-variate logistic regression analysis on each group (bacterial culture–positive GE and bacterial culture–negative GE) to elucidate clinical criteria with the highest yield for predicting bacterial gastroenteritis (BGE).

Results

A total of 756 patients with a mean age of 52 years, 52% female and 48% male, respectively, were included in the study. On the basis of the data of these patients, we suggested using a scoring system to delineate the need for empirical antibiotics in patients with suspected bacterial GE based on six clinical and laboratory variables. We termed this the BGE score. A score 0 – 2 points suggests low risk (0.9%) of bacterial GE. A score of 3 – 4 points confers an intermediate risk of 12.0% and a score of 5 – 8 points confers a high risk of 85.7%. A cut-off of  ≥ 5 points may be used to predict culture-positive BGE with a 75% sensitivity and 75% specificity. The area under the receiver operating characteristic (AUROC) for the scoring system (range 0 – 8) was 0.812 (95% CI: 0.780–0.843) p-value < 0.001.

Conclusion

We suggest using the BGE scoring system (cut-off ≥ 5 points) to delineate the need for empirical antibiotics in patients diagnosed with gastroenteritis. While this is a pilot study, which will require further validation with a larger sample size, our proposed decision-making rule will potentially serve to improve the diagnosis of BGE and thus reduce unnecessary prescription of antibiotics, which will in turn reduce antibiotic-associated adverse events and save on costs worldwide.
Genome-Wide Gene Expression Profiling Reveals the Direct Effect of Dienogest on Ovarian Endometriotic Stromal Cells
Authors: Honda Hiroshi , Nishimichi Norihisa , Kaneko Mayumi , Yamashita Michinori , Akimoto Yumiko , Tanimoto Hirotoshi , Teramoto Mitsue , Teramoto Hideki , Yokosaki Yasuyuki
Published: February 2023

Endometriosis affects up to 10% of women of reproductive age, causing dysmenorrhea, chronic pelvic pain, and infertility. The current key drug for endometriosis is dienogest, a progestin with high specificity for the progesterone receptor. To reveal the direct anti-endometriotic effect of dienogest on ovarian endometriotic cells, we investigated the genome-wide gene expression profiles of ovarian endometriotic stromal cells with (Dienogest group) or without dienogest treatment (Control group) and compared the groups’ gene expression profiles. We performed a gene ontology (GO) analysis and Ingenuity pathway analysis using these data. To validate the microarray data, we performed real-time RT-PCRs and immunohistochemistry for the differentially expressed genes between the two groups. Of 647 genes differentially expressed between the two groups, 314 genes were upregulated and 333 were downregulated in the Dienogest group versus the Control group. The GO analysis showed that the regulation of macrophage chemotaxis, the collagen catabolic process, and the proteoglycan biosynthetic process are the main biological processes closely associated with the differentially expressed genes. We identified 20 canonical pathways that were most significantly differentially expressed in the Dienogest group versus the Control group. We observed that matrix metalloproteinases (MMPs) are the genes in these pathways that are most closely associated with dienogest treatment. Of components involved in the regulation of macrophage chemotaxis, colony-stimulating factor 1 and macrophage-stimulating 1 are potential upstream regulators of MMPs and were observed herein to be suppressed by dienogest. Our results suggest that dienogest may thus exert its anti-endometriotic effect by directly suppressing MMPs.
Differences in Training and Health Characteristics Between Trail Ultrarunners and Shorter Distance Runners
Authors: Armento Aubrey M. , VanBaak Karin D. , Seehusen Corrine N. , Howell David R.
Published: February 2023

Introduction

The primary aim of the study was to compare select training and health characteristics between ultramarathon and shorter distance runners participating in a trail race series.

Methods

A questionnaire was sent to all participants who signed up for a trail race series, including distances of 10 km, half marathon, 50 km, 80.5 km (50 mi), and 100 km. There were 59 participants (27 ultramarathoners and 32 half marathon/10-km runners) who completed the questionnaire. We compared the training and health characteristics between groups using t tests and Fisher exact tests.

Results

There were no significant differences in reported history of stress fracture (15% vs 9%; P=0.70) or sleep quality scores (4.4 vs 5.5; P=0.15) between the ultramarathon and half marathon/10-km groups. Over half of both groups reported trying to change body weight to improve performance, without significant differences between groups (65% vs 53%; P=0.42). A significantly greater proportion of the ultramarathoners reported an episode of binge eating in the 4 wk preceding the race (38% vs 3%; P=0.001).

Conclusions

Despite differences in training volume, we did not find different injury, sleep, and nutrition data between the ultramarathoners and half marathon/10-km runners, with the exception of more ultramarathoners reporting binging behaviors in the 4 wk leading up to the race. Screening for eating disorder behaviors should be considered in distance runners, particularly ultrarunners.
The Cambridge Introduction to Intercultural Communication
Authors: Rings Guido , Rasinger Sebastian M.
Published: February 2023

Uniquely interdisciplinary and accessible, The Cambridge Introduction to Intercultural Communication is the ideal text for undergraduate introductory courses in Intercultural Communication, International Communication and Cross-cultural Communication. Suitable for students and practitioners alike, it encompasses the breadth of intercultural communication as an academic field and a day-to-day experience in work and private life, including international business, public services, schools and universities. This textbook touches on a range of themes in intercultural communication, such as evolutionary and positive psychology, key concepts from critical intercultural communication, postcolonial studies and transculturality, intercultural encounters in contemporary literature and film, and the application of contemporary intercultural communication research for the development of health services and military services. The concise, up-to-date overviews of key topics are accompanied by a wide variety of tasks and eighteen case studies for in-depth discussions, homework, and assessments.
Motor Unit Number Index of the Upper Trapezius: A Meta-Analysis and Cross-sectional Study of Its Reliability
Authors: Abrahao Agessandro , Phung Liane , Fam David , Escorcio-Bezerra Marcio Luiz , Robinson Lawrence R. , Jones Kelvin E. , Zinman Lorne
Published: February 2023

Motor unit number index of the upper trapezius (MUNIX-Trapezius) is a candidate biomarker for bulbar lower motor neuron function; however, reliability data is incomplete. To assess MUNIX-Trapezius reliability in controls, we conducted a systematic review, a cross-sectional study (n = 20), and a meta-analysis. We demonstrated a high inter- and intra-rater intraclass correlation (0.86 and 0.94, respectively), indicating that MUNIX-Trapezius is reliable with between-study variability moderated by age and MUNIX technique. With further validation, this measure can serve as a disease monitoring and response biomarker of bulbar function in the therapeutic development for amyotrophic lateral sclerosis.
Diversity and inclusion: Multilevel recommendations
Authors: Carden Lila L.
Published: February 2023

This article contributes to the knowledge about diversity and inclusion by including a discussion of corporate social responsibility, communication strategies, social capital, and social identity. This article also includes archival data as use cases to demonstrate how two companies are implementing diversity and inclusion practices. I further discuss how the companies' current practices are aligned with human resource components including recruitment and selection; training and development; and compensation and rewards. I conclude by making recommendations to assist companies in building a culture of diversity and inclusion noting a multilevel approach including senior leaders, managers, and underrepresented groups.
Largest-known fossil penguin provides insight into the early evolution of sphenisciform body size and flipper anatomy
Authors: Ksepka Daniel T. , Field Daniel J. , Heath Tracy A. , Pett Walker , Thomas Daniel B. , Giovanardi Simone , Tennyson Alan J.D.
Published: February 2023

Recent fossil discoveries from New Zealand have revealed a remarkably diverse assemblage of Paleocene stem group penguins. Here, we add to this growing record by describing nine new penguin specimens from the late Paleocene (upper Teurian local stage; 55.5–59.5 Ma) Moeraki Formation of the South Island, New Zealand. The largest specimen is assigned to a new species, Kumimanu fordycei n. sp., which may have been the largest penguin ever to have lived. Allometric regressions based on humerus length and humerus proximal width of extant penguins yield mean estimates of a live body mass in the range of 148.0 kg (95% CI: 132.5 kg–165.3 kg) and 159.7 kg (95% CI: 142.6 kg–178.8 kg), respectively, for Kumimanu fordycei. A second new species, Petradyptes stonehousei n. gen. n. sp., is represented by five specimens and was slightly larger than the extant emperor penguin Aptenodytes forsteri. Two small humeri represent an additional smaller unnamed penguin species. Parsimony and Bayesian phylogenetic analyses recover Kumimanu and Petradyptes crownward of the early Paleocene mainland NZ taxa Waimanu and Muriwaimanu, but stemward of the Chatham Island taxon Kupoupou. These analyses differ, however, in the placement of these two taxa relative to Sequiwaimanu, Crossvallia, and Kaiika. The massive size and placement of Kumimanu fordycei close to the root of the penguin tree provide additional support for a scenario in which penguins reached the upper limit of sphenisciform body size very early in their evolutionary history, while still retaining numerous plesiomorphic features of the flipper.

UUID: https://zoobank.org/15b1d5b2-a5a0-4aa5-ba0a-8ef3b8461730
Merchants Revisited: Long-Distance Traders and the World they Made
Authors: Tucker Hannah Knox
Published: February 2023

When faced with Esther Sahle's, Edmond Smith's, and Dane A. Morrison's recent books on English and American merchants, their activities, and their communities, a reader with any level of exposure to the field of early modern and early republic business history might legitimately ask, do we really need more? Historians have so completely associated early modern economic activity with merchant activity that many have deemed the period an era of “merchant capitalism.” The field is full of excellent studies and one might rightfully ask whether historians such as Jacob Price (Capital and Credit in British Overseas Trade [1980]), David Hancock (Oceans of Wine [2009]), Cathy Matson (Merchants and Empire [1998]), and Francesca Trivellato (The Familiarity of Strangers [2009]), among many others, have not plumbed the depths of the subject. Scholars of the Black Atlantic have also increasingly questioned the legitimacy of projects that continue to render the violence of slavery ancillary to discussions of business practice. To some extent, genuine historical engagement with merchants must reproduce the views of colonizers and enslavers to make the people whom it studies legible to modern audiences. This reproduction does damage as it illuminates, and business historians must engage this critique directly to maintain the legitimacy of their projects. In a crowded field with foundations that are seriously challenged by an emergent strain in this historical discipline, it is worth skeptically asking what three additional studies can add.
The hidden cochlear implant
Authors: Ergun O , Yildirim O , Bozyel I , Kaymak I , Gokcen D , Sennaroglu L
Published: February 2023

Objective

The hidden cochlear implant concept has two data transmission methods: Bluetooth low energy and transtympanic optical data transfer systems. This study aimed to present the hidden cochlear implant and compare the test results with the existing fully implanted cochlear implant.

Method

The Bluetooth low energy module was implanted into the implant bed. For the transtympanic optical data transfer tests, a receiver was passed through the posterior tympanotomy, and the transmitter was placed in the ear canal.

Results

The Bluetooth low energy module range was 5.2–17.5 m. Transtympanic optical data transfer reached a rate of 1 Mbit/s and had 99.22 per cent accuracy. Despite various obstacles, the accuracy of the transtympanic optical data transfer was more than 99 per cent with a 250 Kbit/s rate. The average power consumption was 310 mW for the implanted Bluetooth low energy module and 41 mW for the transtympanic optical data transfer receiver.

Conclusion

Bluetooth low energy is suitable to be used transcutaneously. Transtympanic optical data transfer is an effective and promising technology. Hidden use cochlear implants aim to have the aesthetics of a fully implantable cochlear implant with higher reliability and a magnet-free design with smart device integration.
Heidegger’s heritage: The temporal politics of authenticity, then and now
Authors: Hom Andrew R.
Published: February 2023

For a discipline as philosophically and temporally sensitive as International Relations, it is curious that Martin Heidegger, widely considered the most important philosopher of the twentieth century, has only recently begun to receive disciplinary attention. It is also noteworthy that as IR begins to grapple with right-wing extremism, it has not addressed Heidegger’s fascist politics. Conducting a close reading of his account of existence in time, this article argues that from his magnum opus to his final diaries, Heidegger prefigured many existentialist discussions, but his particular conceptualisations of time, temporality, and authentic Being lent political life a dangerous edge. Scrutinising both the conceptual and practical consequences of Heidegger’s thought, this article traces key tensions in his claims that, to realise true Selfhood, we must overcome social time on the road to death. This antagonism encourages overly individuated and aggressive habits of thought and action that reject the possibilities of co-existence. We can see this in how Heidegger’s obsession with authenticity over time pushed him deeper into Nazism, and in the ways that his existential vernacular resounds through today’s right-wing renaissance. Juxtaposing authenticity, then and now, helps draw out the distinctively temporal dynamics of Heidegger’s existentialism as well as the existential politics of our time.
Synchronicity of viral shedding in molossid bat maternity colonies
Authors: Hoarau Axel O. G. , Köster Marie , Dietrich Muriel , Le Minter Gildas , Joffrin Léa , Ramanantsalama Riana V. , Mavingui Patrick , Lebarbenchon Camille
Published: February 2023

Infection dynamics in vertebrates are driven by biological and ecological processes. For bats, population structure and reproductive cycles have major effects on RNA virus transmission. On Reunion Island, previous studies have shown that parturition of pregnant females and aggregation of juvenile Reunion free-tailed bats (Mormopterus francoismoutoui) are associated with major increase in the prevalence of bats shedding RNA viruses. The synchronicity of such shedding pulses, however, is yet to be assessed between viruses but also maternity colonies. Based on 3422 fresh faeces collected every 2–5 weeks during four consecutive birthing seasons, we report the prevalence of bats shedding astroviruses (AstVs), coronaviruses (CoVs) and paramyxoviruses (PMVs) in two maternity colonies on Reunion Island. We found that the proportion of bats shedding viruses is highly influenced by sampling collection periods, and therefore by the evolution of the population age structure. We highlight that virus shedding patterns are consistent among years and colonies for CoVs and to a lesser extent for PMVs, but not for AstVs. We also report that 1% of bats harbour co-infections, with two but not three of the viruses, and most co-infections were due to CoVs and PMVs.
Types of co-occurring patterns of mental health among the disaster victims in South Korea
Authors: Lee Kyeong-Won , Lee Hyun
Published: February 2023

This study examined co-occurring patterns of mental health among disaster victims using latent profile analysis and assessed the difference between sociodemographic factors and protective factors that affect group classification. The data of 2300 disaster victims from 2019 (4th wave) NDMI (National Disaster Management Research Institute) for Long-term Survey on the Change of Life of Disaster Victims were analyzed. The latent profile analysis revealed that three profiles; High comorbid symptom (HCS) (6.2%), Medium comorbid symptom (MCS) (22.6%), and Low symptom (LS) (71.2%). The factors that explain the difference in this divided profile group were the type of disaster, hurt, income, age, elapsed years, resilience, and community resilience in the multinomial logistic regression. When individual resilience and community resilience are high, more effective in making people belong to the low comorbid symptom group. Therefore, there is a need for a strategy that promotes synergy between the two relationships while maintaining a dual focus point of view that fosters resilience at the individual and community level together.
Longitudinal association between executive function and academic achievement in children with neurofibromatosis type 1 and plexiform neurofibromas
Authors: Hou Yang , Wu Xian , Allen Taryn , Toledo-Tamula Mary Anne , Martin Staci , Gillespie Andy , Goodwin Anne , Widemann Brigitte C. , Wolters Pamela L.
Published: February 2023

Objective:

To examine how executive functioning (EF) relates to academic achievement longitudinally in children with neurofibromatosis type 1 (NF1) and plexiform neurofibromas (PNs) and whether age at baseline moderates this relationship.

Method:

Participants included 88 children with NF1 and PNs (ages 6–18 years old, M = 12.05, SD = 3.62, 50 males) enrolled in a natural history study. Neuropsychological assessments were administered three times over 6 years. EF (working memory, inhibitory control, cognitive flexibility, and attention) was assessed by performance-based (PB) and parent-reported (PR) measures. Multilevel growth modeling was used to examine how EF at baseline related to initial levels and changes in broad math, reading, and writing across time, controlling for demographic variables.

Results:

The relationship between EF and academic achievement varied across EF and academic domains. Cognitive flexibility (PB) uniquely explained more variances in initial math, reading, and writing scores; working memory (PB) uniquely explained more variances in initial levels of reading and writing. The associations between EF and academic achievement tended to remain consistent across age groups with one exception: Lower initial levels of inhibitory control (PR) were related to a greater decline in reading scores. This pattern was more evident among younger (versus older) children.

Conclusions:

Findings emphasize the heterogeneous nature of academic development in NF1 and that EF skills could help explain the within-group variability in this population. Routine cognitive/academic monitoring via comprehensive assessments and early targeted treatments consisting of medication and/or systematic cognitive interventions are important to evaluate for improving academic performance in children with NF1 and PNs.
A note on international spillovers of economic policy uncertainty across business cycles: evidence from OECD countries
Authors: Popp Aaron , Zhang Fang
Published: February 2023

We estimate a smooth-transition vector autoregression model (ST-VAR) using panel data from 14 OECD countries to study the cross-country spillover effects of economic policy uncertainty (EPU) shocks. An unexpected elevation of EPU originating abroad has an overall contractionary real effect, and the spillover effects depend on the state of the business cycle of the recipient country. EPU spillover shocks during recessions have stronger but less persistent effects on a number of economic indicators. We also find that the interconnectedness of EPU, financial markets, and business confidence are important channels for the EPU shocks to propagate across countries, while the trade channel has limited effects, especially during expansions.
Credit market developments and sectoral business cycles worldwide
Authors: Ulussever Talat , Kilinc Mustafa
Published: February 2023

This paper investigates the relationship between credits and sector-level output dynamics in a sample of 41 advanced and developing countries. The existing literature shows that household credits are associated with boom-bust cycles in aggregate output, whereas business loans do not cause such output dynamics. The present paper expands these findings in terms of advanced versus developing countries and manufacturing versus services sectors. The new findings indicate that the resulting boom-bust cycles in the aggregate output in response to household credits are generally observed in the sample of developing countries, with no similar dynamics in the advanced countries. Another significant conclusion is that the boom-bust cycles are generated mostly in the services sector. No equivalent boom-bust dynamics are observed in the manufacturing sector, but the negative medium-run effects of household credits are larger in this sector. These findings indicate that credit mechanisms and consequences can significantly vary across countries and sectors.
Lost Arias from Ifigenia in Tauri (1713) in Thomas Gray's Music Collection: ‘E posto in Musica dal Sig. Domenico Scarlatti’?
Authors: Dupuis-Désormeaux Nathalie
Published: February 2023

This article shares the exciting discovery of previously unidentified arias within the music amassed by the eighteenth-century English poet Thomas Gray. His ten-volume collection, now held at the Lewis Walpole Library, Yale University, contains some of the only surviving copies of important arias dating back as far as 1690 and bears many annotations by Gray listing performance venues, composers, opera roles and singers. One volume of the collection contains many unattributed works, among which I identify a number of arias. Five of them match the libretto to La caduta del regno dell'Amazzoni (1690) and another corresponds to Il Colombo overo l'India scoperta (1691), both operas originally set by Bernardo Pasquini. The texts of the two ensuing arias align with Carlo Sigismondo Capeci's libretto for Ifigenia in Tauri (1713), the opera he wrote with Domenico Scarlatti for their patroness, Maria Kazimiera Sobieska. In addition, in the first pages of the assemblage, instructions in Gray's hand on how to execute a basso-continuo accompaniment continue from another volume, where he entitled these ‘Regole per l'Accompagnamento’ and interwove them with a ‘Toccata per il Cembalo’. This article seeks to describe the newfound works and stimulate study into the full contents of Gray's music collection, but its main focus is on the two excerpts from Ifigenia in Tauri and their possible attribution to Domenico Scarlatti. Salient characteristics of these scores are presented, as is an evaluation of their concordance with Capeci's libretto. Further, I underline features that these numbers share with other Ifigenia in Tauri arias known to be by Domenico Scarlatti and provide comprehensive tables detailing equivalent structural proportions.