bluuebunny/crossref_metadata_2025_split huggingface dataset:
Epileptic Adolescents and Ramadan Fasting: A Prospective Cohort Study
Authors: Darwish Amira Hamed 
Published: October 2020

AbstractThis study aimed to evaluate the effect of Ramadan fasting on seizure control in epileptic adolescents. A prospective cohort study that included 56 epileptic patients aged 11 to 18 years. Patients were followed-up in the pediatric neurology clinic at Tanta University Children's Hospital during Ramadan 2019. Seizures frequency and severity, measured by Chalfont seizure severity scale, during Ramadan fasting were compared with those in the month before Ramadan. Before Ramadan, 43/56 patients were controlled and seizure free. Meanwhile, 13/56 patients were uncontrolled and had seizure frequency of one to six seizures in the month before Ramadan. There was no significant difference in seizure frequency during Ramadan compared with before Ramadan (p = 0.132), whereas seizure severity was significantly reduced during Ramadan (p = 0.028). Both seizure frequency and severity were significantly lower during Ramadan in uncontrolled epileptic patients compared with before Ramadan (p = 0.02 and 0.005). Ramadan fasting is safe in adolescents with epilepsy. Fasting is not a precipitating factor for seizures in epileptic adolescents, provided compliance to antiepileptic drugs, and could be beneficial for seizure control in uncontrolled epilepsy.
Acute COVID-19 Infection in a Pediatric Patient with ROHHAD
Authors: Udrea Daniel S. , Lopez Merrick , Avesar Michael , Qureshi Sonea , Moretti Anthony , Abd-Allah Shamel A. , Chandnani Harsha K. 
Published: October 2020

AbstractThe novel coronavirus (severe acute respiratory syndrome coronavirus-2) has led to a global pandemic. In the adult population, coronavirus disease 2019 (COVID-19) has been found to cause multiorgan system damage with predicted long-term sequelae. We present a case of a 10-year-old boy with a history of ROHHAD (rapid-onset obesity with hypothalamic dysregulation, hypoventilation, and autonomic dysregulation) who presented with hypoxia, emesis, and abdominal pain. Imaging found bilateral ground glass opacities in the lungs and a pericardial effusion. Laboratory evaluation was concerning for elevated inflammatory markers. Remdesivir, hydroxychloroquine, and anticoagulation (heparin and enoxaparin) were utilized. The patient's severe respiratory failure was managed with conventional mechanical ventilation, inhaled nitric oxide, and airway pressure release ventilation. We hope that this report provides insight into the course and management of the severe acute pediatric COVID-19 patient, specifically with underlying comorbidities such as ROHHAD. Clinical trial registration is none.
Modeling a Pandemic (COVID-19) Management Strategy for Urban Slums Using Social Geometry Framework
Authors: Onditi Francis , Obimbo Moses , Muchina Samson Kinyanjui , Nyadera Israel 
Published: October 2020

AbstractThe purpose of this paper is to utilize social geometry framework to model a pandemic (COVID-19) management strategy in densely populated informal settlements in Kenya. Our central claim is that the containment strategy that was instituted to control spread of COVID-19 failed to recognize the socio-cultural and livelihood complexities of the urban slum residents. This unmitigated strategy predisposed the residents to risks of heightened transmission of the pandemic. Drawing on social geometry approach in the analysis of human relations, we reveal some insights offered by our experiences in theorizing about public health intervention (PHI) and in doing so develop an alternative analytical framework (‘social pendulum’) to support the development of a PHI strategy that is compatible with the swing-like lifestyle of residents in the informal settlements. Our conclusion revisits the reliability and validity criteria for the new framework and offers some direction for further research.
Comparative analysis of characteristics of a supersonic cw chemical HF laser on molecular fluorine and nitrogen trifluoride
Authors: Fedorov I.A. 
Published: October 2020

Abstract
We have experimentally studied the characteristics of a supersonic cw chemical HF laser with a flat nozzle array based on a nozzle – nozzle reagent mixing scheme operating with the use of F2 – D2 – He and NF3 – D2 – He fuel compositions in an atomic fluorine generator. The active medium flow field pattern, its gas-dynamic characteristics, and the laser radiation spectrum are considered. The comparison of these characteristics has made it possible to establish a strong impact on the flow field (lasing zone length) of the chemical composition of the combustion products from the atomic fluorine generator. The gas-dynamic parameters of the active medium formed by using a NF3 – D2 – He fuel have turned out to be less acceptable in terms of the gas flow pressure recovery than in the case of F2 – D2 – He fuel, while the radiation spectrum was more preferable from the viewpoint of passing through the atmosphere.
Photoacoustic methane gas analyser based on a 3.3-μm optical parametric oscillator
Authors: Sherstov I.V. , Kolker D.B. 
Published: October 2020

Abstract
We demonstrate a bench-scale prototype of a photoacoustic (PA) methane gas analyser that takes advantage of an optical parametric oscillator (OPO) based on a fan-out MgO : PPLN structure and resonant differential PA detector. The OPO emits in a repetitively pulsed mode (∼1750 Hz) at an idler wavelength of ∼3.3 μm with an average power of ∼40 – 50 mW. Using the prototype laser PA gas analyser, we experimentally demonstrate the feasibility of measuring the background methane concentration in air (∼2 – 3 ppm of CH4). The threshold sensitivity of the PA gas analyser (1σ) is determined to be ∼ 49 ppb of CH4.
Decay of a laser beam under stimulated temperature scattering in toluene as a result of two-photon pump absorption and nonsteady-state laser pulse interaction with matter
Authors: Gordeev A.A. , Efimkov V.F. , Zubarev I.G. , Mikhailov S.I. 
Published: October 2020

Abstract
The decay of the pump-beam spatial structure under conditions of stimulated temperature scattering of a pulsed laser beam in toluene as a result of two-photon absorption of pump radiation and time-dependent interaction of a laser pulse with a medium is considered.
Triple integrated laser – thyristor
Authors: Bagaev T.A. , Ladugin M.A. , Padalitsa A.A. , Marmalyuk A.A. , Kurnyavko Yu.V. , Lobintsov A.V. , Danilov A.I. , Sapozhnikov S.M. , Krichevskii V.V. , Konyaev V.P. , Simakov V.A. , Slipchenko S.O. , Podoskin A.A. , Pikhtin N.A. 
Published: October 2020

Abstract
A triple laser – thyristor, i. e., a semiconductor laser with three emitting sections monolithically integrated with an electronic switch (thyristor) is experimentally studied. For comparison, the output characteristics of single and double laser – thyristors are presented. It is shown that the functional integration of a laser with a thyristor in one heterostructure allows the laser to efficiently operate in a pulsed regime (output power ∼50 W), the use of vertical integration of two laser sections increases the power to ∼90 W, and the integration of three laser sections makes it possible to increase the output optical power to ∼120 W with all other conditions being the same.
Professional interpreting translation education in the Chinese mainland
Authors: Zhong Weihe , Zhao Tianyuan , Xu Mianjun 
Published: October 2020

Abstract
This paper reviews the history and achievements of professional interpreting and translation education in the
Chinese mainland since 1979, discusses the internal and external challenges it faces in the new era and puts forward some measures
to accelerate and upgrade its development so as to offer some insights for the future development of translation education in
China and beyond. It is hoped that this paper will enable interpreting and translation teachers and scholars around the world to
better understand the achievements and status quo of professional interpreting and translation education in the Chinese mainland
and will enhance understanding, communication and exchanges of the interpreting and translation education circle
internationally.
Does culture translate?
Authors: Shormani Mohammed Q. 
Published: October 2020

Abstract
This study strives to answer one major question: Does culture translate?, employing the translation of English
proverbs into Arabic by senior students majoring in English. The study involves 30 English proverbs collected from different
sources, based on three criteria, namely complete Arabic equivalence, partial Arabic equivalence and zero Arabic equivalence.
These 30 proverbs were distributed to 20 randomly selected senior students as participants. The participants translated the 30
proverbs in the form of a translation test in two phases. The results of the study show that teaching the cultural aspects of the
proverbs has developed and improved the participants’ translations considerably, thus providing empirical evidence that
culture translates.
Supplementary comparison EURAMET EM-S41 bilateral comparison of DC voltage reference standards (1,018 V and 10 V) (EURAMET.EM-S41)
Authors: Blanc Isabelle , Sardjono Hadi , Syahadi Mohamad 
Published: October 2020

This report describes a bilateral comparison of DC voltage standards organised within the frame of the EU-Indonesia Trade Support Program II n° APE12-06b between LNE, France and KIMLIPI, Indonesia. This bilateral comparison registered in the KCDB as EURAMET.EM-S41 was piloted by LNE. LNE participated in EUROMET comparison N° 429, designated EUROMET.EM.BIPM-K11 thus providing the link between KIM-LIPI results and CCEM-K11. This report includes the measurement results from the participants and information about their calibration methods for measurements of 1,018 V and 10 V.

Main text

To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/.
The final report has been peer-reviewed and approved for publication by the CCEM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).
Resonant x-ray absorption of strong-field-ionized CF3Br
Authors: Fouda A E A , Ho P J , Dunford R W , Kanter E P , Krässig B , Young L , Peterson E R , Landahl E C , Pan L , Beck D R , Southworth S H 
Published: October 2020

Abstract
We report on an experimental and theoretical study of strong-field laser ionization of CF3Br followed by resonant x-ray absorption at the Br K-edge. Distinct 1s → 4p, 5p Rydberg transitions of Br
q+ (q = 1–4) atomic ions are observed and identified with Hartree–Fock–Slater and relativistic configuration interaction calculations. Time-dependent density functional theory and ab initio molecular dynamics calculations were performed to simulate the dissociative ionization process and the molecular orbitals for the q = 1–4 charge states. Measurements were made with both parallel and perpendicular linear polarizations of the laser and x-rays, but dichroism was not observed, indicating negligible alignment by the laser ionization process. This result is explained by calculations on atomic Br and the molecular simulation.
Coriolis contribution to excited states of odd-mass nuclei with different deformation-dependent mass coefficients
Authors: Ait Ben Hammou A , Oulne M 
Published: October 2020

Abstract
Within the collective Bohr Hamiltonian, the adoption of a mass tensor as a function of collective coordinates has demonstrated its importance for describing the structure of nuclei. On the other hand, for odd-mass nuclei, the Coriolis interaction between the rotational and single-particle motions affects significantly the structure of nuclear excited states. In the framework of a recently developed extended Bohr Hamiltonian, by considering the deformation-dependent mass formalism whith different mass parameters for the rotation and the two β and γ vibrations and taking into account the Coriolis contribution, we investigate the bands structure of the 173Yb, 163Dy, 155Eu and 153Eu nuclei. Excited-state energies and B(E2) transition probabilities are calculated and compared with the available experimental data. Besides, we investigate the effect of DDMF and the Coriolis force on nuclear observables.
Aggregation of methacrylate-based ternary biomimetic antimicrobial polymers in solution
Authors: Rani Garima , Kuroda Kenichi , Vemparala Satyavani 
Published: October 2020

Abstract
Using detailed atomistic simulations, we explore the morphological characteristics of aggregates formed in solution phase by ternary biomimetic antimicrobial (AM) methacrylate polymers, composed of hydrophobic, charged cationic and polar functional groups and compare it with aggregate morphologies of binary methacrylate polymers, composed only of hydrophobic and charged cationic functional groups. The effect of sequence of the constituent functional groups on aggregate conformation is also studied by considering random and block sequences along the polymer backbone. Our results show that while binary polymers tend to form robust aggregates, replacing some of the hydrophobic groups with overall charge neutral polar groups weakens the aggregate considerably, leading to increased conformational fluctuations and formation of loose-packed, open aggregates, particularly in the case of random ternary polymers. Interaction energy calculations clearly suggest that the role of inclusion of polar groups in ternary polymers is two-fold: (1) to reduce possible strong local concentration of hydrophobic groups and ‘smear’ the overall hydrophobicity along the polymer backbone to increase the solubility of the polymers (2) to compensate the loss of attractive hydrophobic interactions by forming attractive electrostatic interactions with the charged groups and contribute to aggregation formation, albeit weak. Given that most of the naturally occurring AM peptides have contributions from all the three functional groups, this study elucidates the functionally tuneable role of inclusion of polar groups in the way AM agents interact with each other in solution phase, which can eventually dictate their partitioning behaviour into bacterial and mammalian membranes.
Impact of defects on photoexcited carrier relaxation dynamics in GeSn thin films
Authors: Kondratenko S V , Derenko S S , Mazur Yu I , Stanchu H , Kuchuk A V , Lysenko V S , Lytvyn P M , Yu S-Q , Salamo G J 
Published: October 2020

Abstract
We report the results of a study that was conducted to investigate the recombination paths of photoexcited charge carriers in GeSn thin films. The charge carrier lifetime was predicted as a function of temperature from a description of photoconductivity transients, assuming co-influence of Shockley–Read–Hall and radiative carrier recombination paths. We identify that dislocations are the source of a band of electronic states with the highest occupied state at E
V + (85÷90) meV that acts as Shockley–Read–Hall centers determining the charge carrier lifetime. The photoluminescence (PL) and photoconductivity spectroscopy have been applied to distinguish between the contribution of both band-to-band and dislocation-related electron transitions. The PL band was found to demonstrate a low-energy shift of about 80 ± 20 meV relative to the edge of the photoconductivity spectra in the indirect bandgap GeSn films with dislocations. The role of a different nature deeper acceptor level at E
V + (140 ÷ 160) meV in the recombination processes of the GeSn layers with better structural quality and the Sn content higher than 4% was discussed. This detailed understanding of the recombination processes is of critical importance for developing GeSn/Ge-based optoelectronic devices.
A cascaded difference frequency generation method combined with cavity phase matching and quasi phase matching for high-efficiency terahertz generation
Authors: Shijia Zeng , Zhiming Rao , Wenjiang Tan , Enshuai Zhang 
Published: October 2020

Abstract
A cascaded difference frequency generation (DFG) method for high-efficiency terahertz generation is presented, which is combined with cavity phase matching and quasi phase matching. The results show that a ten-orders cascade effect can be approximately satisfied, with a peak photon conversion efficiency of 447.6%, which exceeds the Manley-Rowe limit. This method is expected to contribute to improving the conversion efficiency of DFG for terahertz generation.
Polarization-independent reflection grating in second-order Littrow for high laser resolving power
Authors: Fang Jimin , Wang Bo 
Published: October 2020

Abstract
In order to obtain a grating solution for high laser resolving power, a multilayer fused-silica reflection grating is described with a silver layer embedded in the groove in second-order Littrow configuration instead of first-order mounting. Efficiencies of 96.17% and 96.14% can diffracted in −2nd order for TE and TM polarizations, which are greater than 96%. The new multilayer reflection grating with a silver layer embedded has good incident characteristics and process tolerances. Therefore, the high-efficiency output with polarization-independent and wideband property characteristics of the grating will be well applied to the laser field.
D → P(π, K) helicity form factors within light-cone sum rule approach *
Authors: Fu Hai-Bing , Cheng Wei , Zhou Rui-Yu , Zeng Long 
Published: October 2020

Abstract
In this study,

helicity form factors (HFFs) are investigated by applying the QCD light-cone sum rule (LCSR) approach. The calculation accuracy is up to the next-to-leading order (NLO) gluon radiation correction of twist-(2,3) distribution amplitude. The resultant HFFs at a large recoil point are

and

, in which the contributions from the three particles of the leading order (LO) are so small that they can be safely neglected. The maximal contribution of the NLO gluon radiation correction for

is less than 3%. After extrapolating the LCSR predictions for these HFFs to the whole

-region, we obtain the decay widths for semileptonic decay processes

, which are consistent with the BES-III collaboration predictions within error limits. After considering the

-meson lifetime, we give the branching fractions of

with

; our predictions also agree with the BES-III collaboration results within error limits, especially for the

decay process. Finally, we present the forward-backward asymmetry

and lepton convexity parameter

, and further calculate the mean value of these two observations,

and

, which may provide a way to test those HFFs in future experiments.
Top rare decays t→cV in mirror twin Higgs models *
Authors: Bie Su-Ya , Liu Guo-Li , Wang Wenyu 
Published: October 2020

Abstract
The decay

(

) processes in mirror twin Higgs models with colorless top partners are studied in this paper. We report that the branching ratios of these decays can strongly affect the standard model expectations in some parameter spaces and may be detectable according to the current precision electroweak measurements. Thus, constraints on the model parameters may be obtained from the branching fraction of the decay processes, which may serve as a robust detection tool for this new physics model.
Uncovering the dynamics of correlation structures relative to the collective market motion
Authors: Heckens Anton J , Krause Sebastian M , Guhr Thomas 
Published: October 2020

Abstract
The measured correlations of financial time series in subsequent epochs change considerably as a function of time. When studying the whole correlation matrices, quasi-stationary patterns, referred to as market states, are seen by applying clustering methods. They emerge, disappear or reemerge, but they are dominated by the collective motion of all stocks. In the jargon, one speaks of the market motion, it is always associated with the largest eigenvalue of the correlation matrices. Thus the question arises, if one can extract more refined information on the system by subtracting the dominating market motion in a proper way. To this end we introduce a new approach by clustering reduced-rank correlation matrices which are obtained by subtracting the dyadic matrix belonging to the largest eigenvalue from the standard correlation matrices. We analyze daily data of 262 companies of the S&P 500 index over a period of almost 15 years from 2002 to 2016. The resulting dynamics is remarkably different, and the corresponding market states are quasi-stationary over a long period of time. Our approach adds to the attempts to separate endogenous from exogenous effects.
Exploration of swimming performance for a biomimetic multi-joint robotic fish with a compliant passive joint
Authors: Chen Di , Wu Zhengxing , Dong Huijie , Tan Min , Yu Junzhi 
Published: October 2020

Abstract
In this paper, a novel compliant joint with two identical torsion springs is proposed for a biomimetic multi-joint robotic fish, which enables imitatation of the swimming behavior of live fish. More importantly, a dynamic model based on the Lagrangian dynamic method is developed to explore the compliant passive mechanism. In the dynamic modeling, a simplified Morrison equation is utilized to analyze the hydrodynamic forces. Further, the parameter identification technique is employed to estimate numerous hydrodynamic parameters. The extensive experimental data with different situations match well with the simulation results, which verifies the effectiveness of the obtained dynamic model. Finally, motivated by the requirement for performance optimization, we firstly take advantage of a dynamic model to investigate the effect of joint stiffness and control parameters on the swimming speed and energy efficiency of a biomimetic multi-joint robotic fish. The results reveal that phase difference plays a primary role in improving efficiency and the compliant joint presents a more significant role in performance improvement when a smaller phase difference is given. Namely, at the largest actuation frequency, the maximum improvement of energy efficiency is obtained and surprisingly approximates 89%. Additionally, the maximum improvement in maximum swimming speed is about 0.19 body lengths per second. These findings demonstrate the potential of compliance in optimizing joint design and locomotion control for better performance.
Evaluating heat extremes in the UK Climate Projections (UKCP18)
Authors: Kennedy-Asser A T , Andrews O , Mitchell D M , Warren R F 
Published: October 2020

Abstract
In recent years, UK summer heatwaves have resulted in thousands of excess deaths, with both extreme temperatures and high humidity increasing health risks. Here, the UK Climate Projections 2018 (UKCP18) are compared to observational (HadUK-Grid) and reanalysis data (ERA5) to quantify model performance at capturing mean, extremes (95th to 99.5th percentiles) and variability in the climate state and heat stress metrics (simplified wet bulb global temperature, sWBGT; Humidex; apparent temperature). Simulations carried out for UKCP18 generally perform as well as or better than CMIP5 models in reproducing observed spatial patterns of UK climate relating to extreme heat, with RMSE values on average ∼30% less than for the CMIP5 models. Increasing spatial resolution in UKCP18 simulations is shown to yield a minor improvement in model performance (RMSE values on average ∼5% less) compared to observations, however there is considerable variability between ensemble members within resolution classes. For both UKCP18 and CMIP5 models, model error in capturing characteristics of extreme heat generally reduces when using heat stress metrics with a larger vapour pressure component, such as sWBGT. Finally, the 95th percentile of observed UK summer temperature is shown to have ∼60% greater interannual variability than the summer mean over the recent past (1981–2000). This effect is underestimated in UKCP18 models (∼33%) compared to HadUK-grid and ERA5. Compared to projected future changes in the global mean temperature, UK summer mean and 95th percentile temperatures are shown in increase at a faster rate than the global mean.