bluuebunny/crossref_metadata_2025 huggingface dataset:
Twin-core fiber sensor integrated in laser cavity
Authors: Amorebieta Josu , Pereira Joao , Durana Gaizka , Franciscangelis Carolina , Ortega-Gomez Angel , Zubia Joseba , Villatoro Joel , Margulis Walter
Published: July 2022

In this work, we report on a twin-core fiber sensor system that provides improved spectral efficiency, allows for multiplexing and gives low level of crosstalk. Pieces of the referred strongly coupled multicore fiber are used as sensors in a laser cavity incorporating a pulsed semiconductor optical amplifier (SOA). Each sensor has its unique cavity length and can be addressed individually by electrically matching the periodic gating of the SOA to the sensor’s cavity roundtrip time. The interrogator acts as a laser and provides a narrow spectrum with high signal-to-noise ratio. Furthermore, it allows distinguishing the response of individual sensors even in the case of overlapping spectra. Potentially, the number of interrogated sensors can be increased significantly, which is an appealing feature for multipoint sensing.
Author Correction: A computerized diagnostic model for automatically evaluating placenta accrete spectrum disorders based on the combined MR radiomics-clinical signatures
Authors: Zhu Hao , Yin Xuan , Wang Haijie , Wang Yida , Liu Xuefen , Wang Chenglong , Li Xiaotian , Lu Yuanyuan , Yang Guang , Zhang He
Published: July 2022

An amendment to this paper has been published and can be accessed via a link at the top of the paper.
The conserved C-terminal residues of FAM83H are required for the recruitment of casein kinase 1 to the keratin cytoskeleton
Authors: Kuga Takahisa , Inoue Naoki , Sometani Kensuke , Murataka Shino , Saraya Minami , Sugita Rina , Mikami Toshinari , Takeda Yasunori , Taniguchi Masanari , Nishida Kentaro , Yamagishi Nobuyuki
Published: July 2022

The casein kinase 1 (CK1) family of serine/threonine protein kinases is involved in diverse cellular events at discrete subcellular compartments. FAM83H acts as a scaffold protein that recruits CK1 to the keratin cytoskeleton or to the nuclear speckles, which are storage sites for splicing factors. We determined the amino acid region of FAM83H required for recruiting CK1 to the keratin cytoskeleton. The subcellular localization of mutant FAM83H proteins with deletions of amino acid residues at different positions was evaluated via immunofluorescence. FAM83H mutants with deleted C-terminal residues 1134–1139, which are conserved among vertebrates, lost the ability to localize and recruit CK1 to the keratin cytoskeleton, suggesting that these residues are required for recruiting CK1 to the keratin cytoskeleton. The deletion of these residues (1134–1139) translocated FAM83H and CK1 to the nuclear speckles. Amino acid residues 1 to 603 of FAM83H were determined to contain the region responsible for the recruitment of CK1 to the nuclear speckles. Our results indicated that FAM83H recruits CK1 preferentially to the keratin cytoskeleton and alternatively to the nuclear speckles.
Noninvasive monitoring of bilirubin photoisomer excretion during phototherapy
Authors: Uchida Yumiko , Takahashi Yukihiro , Morimoto Yukihiro , Greimel Peter , Tosaki Asako , Kumagai Akiko , Nishikubo Toshiya , Miyawaki Atsushi
Published: July 2022

Lumirubin is the most prevalently excreted hydrophilic bilirubin photoisomer in phototherapy for neonatal jaundice caused by excess hydrophobic unconjugated bilirubin (ZZ-bilirubin). We developed a simple method to estimate the amount of lumirubin by monitoring the reverse photoisomerization of lumirubin to ZZ-bilirubin. Although lumirubin formation was long considered irreversible, exposure to blue light in the presence of the fluorescent protein UnaG, which binds specifically and tightly to ZZ-bilirubin, enables the reverse photoisomerization of lumirubin. This reaction was first detected using a fluorescence assay of neonatal urine sampled during phototherapy and purified lumirubin. The phenomenon of reverse photoisomerization of lumirubin was validated using liquid chromatography–mass spectrometry, which confirmed that lumirubin is reconverted to ZZ-bilirubin in the presence of UnaG. Analyses of 20 urine samples from 17 neonates revealed a significant correlation (correlation coefficient [r] = 0.978; 95% confidence interval 0.867–0.979; P < .001) between lumirubin and ZZ-bilirubin concentration before and after reverse photoisomerization. In general, the rate of photo-reconversion of lumirubin to ZZ-bilirubin is approximately 40%. In conclusion, we demonstrate here that lumirubin can be photo-reconverted to ZZ-bilirubin via exposure to blue light in the presence of UnaG. Utilizing this approach, urinary lumirubin levels can be estimated using an easy-to-perform fluorescence assay.
Improved global wetland carbon isotopic signatures support post-2006 microbial methane emission increase
Authors: Oh Youmi , Zhuang Qianlai , Welp Lisa R. , Liu Licheng , Lan Xin , Basu Sourish , Dlugokencky Edward J. , Bruhwiler Lori , Miller John B. , Michel Sylvia E. , Schwietzke Stefan , Tans Pieter , Ciais Philippe , Chanton Jeffrey P.
Published: July 2022

Atmospheric concentrations of methane, a powerful greenhouse gas, have strongly increased since 2007. Measurements of stable carbon isotopes of methane can constrain emissions if the isotopic compositions are known; however, isotopic compositions of methane emissions from wetlands are poorly constrained despite their importance. Here, we use a process-based biogeochemistry model to calculate the stable carbon isotopic composition of global wetland methane emissions. We estimate a mean global signature of −61.3 ± 0.7‰ and find that tropical wetland emissions are enriched by ~11‰ relative to boreal wetlands. Our model shows improved resolution of regional, latitudinal and global variations in isotopic composition of wetland emissions. Atmospheric simulation scenarios with the improved wetland isotopic composition suggest that increases in atmospheric methane since 2007 are attributable to rising microbial emissions. Our findings substantially reduce uncertainty in the stable carbon isotopic composition of methane emissions from wetlands and improve understanding of the global methane budget.
Pico-molar electrochemical detection of ciprofloxacin at composite electrodes
Authors: Singh Vikram , Kuss Sabine
Published: July 2022

Rapid determination of ciprofloxacin at OCNTs-PDA-Ag sensors enables environmental monitoring and future bioelectrochemical studies.
Michael addition–elimination–cyclization based turn-on fluorescence (MADELCY TOF) probes for cellular cysteine imaging and estimation of blood serum cysteine and aminoacylase-1
Authors: Shaikh Dastgir Shakil , Parmar Sangeeta , Kalia Dimpy
Published: July 2022

Michael addition–elimination–cyclization based turn-on fluorescence (MADELCY TOF) probes for the highly sensitive estimation of Cys and aminoacylase-1 (ACY-1).
Direct measurement of the pH of aerosol particles using carbon quantum dots
Authors: Tackman Emma C. , Grady Rachel S. , Freedman Miriam Arak
Published: July 2022

Carbon quantum dots have potential as a direct measure of the pH of individual atmospheric aerosol particles.
Structure–function relationships in polymeric multilayer capsules designed for cancer drug delivery
Authors: Nifontova Galina , Tsoi Tatiana , Karaulov Alexander , Nabiev Igor , Sukhanova Alyona
Published: July 2022

This review describes the current issues in designing cancer cell–targeting polymeric multilayer capsules, their interactions with constituents of biofluids, and the capsules’ targeting efficacy at the molecular, cellular, and whole-body levels.
Peroxosolvate discovery method leads to first cocrystal with three energetic components
Authors: Bellas Michael K. , Matzger Adam J.
Published: July 2022

New energetic peroxosolvates, including the first completely energetic ternary cocrystal, are discovered by application of a novel discovery method.
Cp*Ir(iii) and Cp*Rh(iii)-catalyzed annulation of salicylaldehydes with fluorinated vinyl tosylates
Authors: Zhao Shuwen , Cai Xiaojia , Lu Yuying , Hu Jinhui , Xiong Zhuang , Jin Jingwei , Li Yin , Wang Honggen , Wu Jia-Qiang
Published: July 2022

A versatile hydroxy-directed aldehyde C–H activation/annulation of salicylaldehydes with fluorovinyl tosylates enables the synthesis of diverse 2,3-non-substituted and 2-fluoroalkoxy-substituted chromones via Cp*Ir(iii) or Cp*Rh(iii) catalysis.
Diaminocyclopentane-derived O-GlcNAcase inhibitors for combating tau hyperphosphorylation in Alzheimer's disease
Authors: Weber Patrick , Mészáros Zuzana , Jagečić Denis , Hribljan Valentina , Mitrečić Dinko , Bojarová Pavla , Slámová Kristýna , Vrba Jiří , Kulik Natalia , Křen Vladimír , Stütz Arnold E.
Published: July 2022

We report the synthesis and testing of a novel type (new lead structure) of powerful and highly selective human O-N-acetyl-β-d-glucosaminidase (enzyme associated with Alzheimer's disease) inhibitors that are not based on transition state mimetics.
Complete twin suppression in oriented NH2-MIL-125 film via facile coordination modulation
Authors: Sun Yanwei , Liu Liangliang , Ji Taotao , Yan Jiahui , Liu Yi
Published: July 2022

A facile competitive metal ion-based coordination modulation strategy was developed for complete twin suppression in oriented c-oriented NH2-MIL-125 film.
Mechanistic insights into positional and skeletal isomerization of cyclohexene in the H-BEA zeolite
Authors: Liu Peng , Liu Qian , Liu Wei , Peng Shaozhong , Mei Donghai
Published: July 2022

Positional isomerization of the double bond and the ring contraction process within cyclohexene catalyzed by the Brønsted acid site within zeolite H-BEA were quantitatively investigated with the help ofab initiomolecular dynamics simulations combined with enhanced sampling method.
The Piezo–Fenton synergistic effect of ferroelectric single-crystal BaTiO3 nanoparticles for high-efficiency catalytic pollutant degradation in aqueous solution
Authors: Gao Hongcheng , Zhang Yuanguang , Xia Hongyu , Mao Xiaoxia , Zhu Xiaojing , Miao Shihao , Shi Mengqin , Zha Shijiao
Published: July 2022

Relationship between degradation efficiency, rate constants and molecular weights of CR, ABK, RhB, TH, MB and MO in the Piezo–Fenton-catalytic process of BT.
Synthesis and characterization of a new monometallic layered double hydroxide using manganese
Authors: Cornu Damien , Coustel Romain , Renaudin Guillaume , Rogez Guillaume , Renard Aurélien , Durand Pierrick , Carteret Cédric , Ruby Christian
Published: July 2022

This article reports for the first time the synthesis of an LDH using only manganese as the divalent and trivalent metallic ion.
A phage cocktail combined with the enteric probiotic Lactobacillus reuteri ameliorated mouse colitis caused by S. typhimurium
Authors: Wang Xinwu , Ji Yalu , Qiu Cao , Zhang Hao , Bi Lanting , Xi Hengyu , Lei Liancheng , Liu Bing , Han Wenyu , Gu Jingmin
Published: July 2022

Salmonella enterica serovar Typhimurium (S. typhimurium) is one of the most important foodborne pathogens that causes colitis in humans.
Rapid and sensitive determination of leached platinum group elements in organic reaction solution of metal-catalyzed reactions by laser ablation-ICP-MS with spot-drying on paper
Authors: Makino Yoshiki , Matsuo Hiroki , Masuda Koichiro , Onozawa Shun-ya , Nakazato Tetsuya
Published: July 2022

A LA-ICP-MS based analytical method for the evaluation of trace PGE leaching.
Three-dimensional heating and patterning dynamics of particles in microscale acoustic tweezers
Authors: Weser Robert , Deng Zhichao , Kondalkar Vijay V. , Darinskii Alexandre N. , Cierpka Christian , Schmidt Hagen , König Jörg
Published: July 2022

High-resolution in situ measurements provide deep insights into acoustophoresis induced by surface acoustic waves, revealing the correlation between acoustic fields and 3D particle positions, energy conversion processes and localized heating effects.
Metal-free polypeptide redox flow batteries
Authors: Liang Zhiming , Nguyen Tan P. , Attanayake N. Harsha , Easley Alexandra D. , Lutkenhaus Jodie L. , Wooley Karen L. , Odom Susan A.
Published: July 2022

Metal-free redox flow batteries with TEMPO-based polypeptide catholytes and viologen-based polypeptide anolytes were demonstrated. Post-cycling analysis indicated the main source of capacity fade was degradation of the redox-active pendant groups.
Analysis of the transcriptome and metabolome of pancreatic spheroids derived from human induced pluripotent stem cells and matured in an organ-on-a-chip
Authors: Essaouiba Amal , Jellali Rachid , Poulain Stéphane , Tokito Fumiya , Gilard Françoise , Gakière Bertrand , Kim Soo Hyeon , Legallais Cécile , Sakai Yasuyuki , Leclerc Eric
Published: July 2022

The differentiation of pancreatic cells from hiPSC is one of the emerging strategies to achieve anin vitropancreas model. Here, hiPSC-derived β-like-cells spheroids were cultured in microfluidic environment and characterized using omics analysis.
Fabrication of amorphous hollow mesoporous Si@SiOx nanoboxes as an anode material for enhanced lithium storage performance
Authors: Wang Bo , Li Yue , Zhang Jinhui , Wang Xiaoliu , Liu Kun
Published: July 2022

Hollow mesoporous Si@SiOx nanoboxes are synthesized successfully by a simple sol–gel reaction of triethoxysilane using Fe2O3 nanocubes as the template, followed by a thermal reduction process and subsequent acid treatment process.
Work function regulation of surface-engineered Ti2CT2MXenes for efficient electrochemical nitrogen reduction reaction
Authors: Zhang Yaqin , Ma Ninggui , Wang Tairan , Fan Jun
Published: July 2022

The synergetic effect of surficial vacancy and transition metals was unrevealed in defective Ti2CT2(T = O, F, H, OH) systems, and work function provided an alternative view of designing efficient NRR electrocatalysts.
Selective dealloying of chemically disordered Pt–Ni bimetallic nanoparticles for the oxygen reduction reaction
Authors: Jeon Tae-Yeol , Lee Han-Koo , Yoon Geon-Hee , Lee Si-Hwan , Yun Hyung Joong , Kim Ki-Jeong , Lee Kug-Seung , Pinna Nicola , Yu Seung-Ho
Published: July 2022

Advantage of hydroquinone over sulfuric acid in selective dealloying of Pt-Ni nanoparticles to achieve a better ORR is shown. Hydroquinone treated nanoparticles exhibit the highest ORR activity after repeating the treatment twice.
Surface phosphorization for the enhanced photoelectrochemical performance of an Fe2O3/Si photocathode
Authors: Yuan Yanqi , Zhong Boan , Li Feng , Wu Hongmei , Liu Jing , Yang Haiyan , Zhao Liping , Sun Yanting , Zhang Peng , Gao Lian
Published: July 2022

An efficient and cost-friendly FePi co-catalyst was generated on an Fe2O3/p-Si photocathode for enhancing hydrogen evolution reaction activity, derived from accelerated surface kinetics and efficient separation of photogenerated carriers.
Self-assembled iRGD-R7-LAHP-M nanoparticle induced sufficient singlet oxygen and enhanced tumor penetration immunological therapy
Authors: Wang Yu-e , Zhai Junqiu , Zheng Yuxiu , Pan Jiali , Liu Xiaojia , Ma Yan , Guan Shixia
Published: July 2022

(a) Schematic illustration for the preparation of iRGD-R7-LAHP-M NPs. (b) The prepared NPs penetrated into the deep tumor, and released LAHP and metal ions in acid pH, inducing singlet oxygen-mediated cell death and evoking immunogenic cell death.
Monolayer GaOCl: a novel wide-bandgap 2D material with hole-doping-induced ferromagnetism and multidirectional piezoelectricity
Authors: Jiang Shujuan , Yin Huabing , Zheng Guang-Ping
Published: July 2022

GaOCl monolayers are 2D semiconductors with wide bandgaps (∼4.46 eV), high carrier mobilities and strong anisotropy in Poisson's ratio, which can be tuned to have hole-doping induced ferromagnetism and outstanding multidirectional piezoelectricity.
Exploring the catalytic role of the guanidine TBD in carboxylative cyclizations
Authors: Isfeld Kaitlin A. , Killeen Charles , Konowalchuk Dawson J. , Davis Rebecca L.
Published: July 2022

Employing a combination of mechanistic, kinetic and computational studies we have examined the mechanism of the TBD-catalyzed carboxylative cyclization of indole derivatives.
Rapid construction of indole-fused 8–10 membered lactones via a tandem reaction
Authors: Li Zhen , Ma Shiqiang , Liu Fuhai , Ma Ruize , Zhao Jipeng , Xie Xingang , She Xuegong
Published: July 2022

An intramolecular anaerobic Mukaiyama hydration-initiated tandem reaction was developed, which enabled the rapid construction of indole-fused 8–10 membered lactones starting from cyclic 2-allyl-2-(2-nitrophenyl)-1,3-diketones.
Biodegradable copolyesters based on a “soft” isohexide building block with tunable viscoelasticity and self-adhesiveness
Authors: Lin Yiming , Ye Mengting , Zhang Xu , Chen Yong , Chen Ye , Wu Jing , Wang Huaping
Published: July 2022

PBIA copolyesters synthesised using a novel glycosylated monomer (IIDMC) have faster degradation and tunable self-adhesiveness.
New tetradentate N,O-hybrid phenanthroline-derived organophosphorus extractants for the separation and complexation of trivalent actinides and lanthanides
Authors: Yang Xiao , Wang Shihui , Xu Lei , Yan Qiang , Xu Chao , Matveev Petr , Lei Lecheng , Xiao Chengliang
Published: July 2022

Comparison of the extraction and separation properties between two novel phenanthroline-derived organophosphorus ligands, Et-Ph-BPPhen and Et-Ph-PIPhen.
Constructing dual active sites for synergistic electrocatalysis of hydrogen oxidation: single-metal-atoms anchored on WC2O2 MXene
Authors: Zhao Lianming , Han Xiaonan , Tong Yanfu , Ding Yanping , Kong Weichao , Wang Jiajun , Li Bingyu , Xu Jing , Bai Peng , Wei Xing
Published: July 2022

The W2CO2 MXene-supported single-atom catalysts (W2CO2–Msa, Msa = Mn, Fe, Co, Ir, and Pt) show super performance towards the hydrogen oxidation reaction in alkaline media.
21-Carba-23-oxaporphyrinoids and 21-oxo-21-carba-23-oxaporphyrinoids: macrocyclic π-conjugation involving the carbonyl moiety
Authors: Berlicka Anna , Foryś-Martowłos Paulina , Hassa Karolina , Białek Michał J. , Ślepokura Katarzyna , Latos-Grażyński Lechosław
Published: July 2022

Aromaticity of 21-oxo-21-carba-23-oxachlorin resulted from a predominant dipolar contributor. Nonaromaticity of 21-oxo-21-carba-23-oxaporphyrin reflects a participation of canonical aromatic and antiaromatic forms engaged in a peculiar “tug of war”.
Inhibitory potential of nitrogen, oxygen and sulfur containing heterocyclic scaffolds against acetylcholinesterase and butyrylcholinesterase
Authors: Obaid Rami J. , Naeem Nafeesa , Mughal Ehsan Ullah , Al-Rooqi Munirah M. , Sadiq Amina , Jassas Rabab S. , Moussa Ziad , Ahmed Saleh A.
Published: July 2022

The present review focuses on various heterocyclic scaffolds and their role in designing and developing new potential AChE and BChE inhibitors to treat AD.
Investigation of the anticorrosion and adsorption properties of two polymer compounds on the corrosion of SABIC iron in 1 M HCl solution by practical and computational approaches
Authors: Abdallah M. , Soliman K. A. , Alshareef Mubark , Al-Gorair Arej S. , Hawsawi H. , Altass Hatem M. , Al-Juaid Salih S. , Motawea M. S.
Published: July 2022

Top and side views for adsorption of the two dimers over Fe (110) surface.
S-scheme heterojunction AgCl/g-C3N4 with a unique electron transfer channel via a built-in electric field for enhanced H2 production
Authors: Shang Yanyan , Fan Huiqing , Sun Yangyang , Wang Weijia
Published: July 2022

The polyunsaturated edge Ag in a surface-modified catalyst plays a prominent role in the accumulation of electrons during photocatalytic H2 production.
Charge transport materials for mesoscopic perovskite solar cells
Authors: Vasilopoulou Maria , Soultati Anastasia , Filippatos Petros-Panagis , Mohd Yusoff Abd. Rashid bin , Nazeeruddin Mohhamad Khadja , Palilis Leonidas C.
Published: July 2022

An overview on recent advances in the fundamental understanding of how interfaces of mesoscopic perovskite solar cells (mp-PSCs) with different architectures, upon incorporating various charge transport layers, influence their performance.
Phase control of sputter-grown large-area MoTe2 films by preferential sublimation of Te: amorphous, 1T′ and 2H phases
Authors: Hatayama Shogo , Saito Yuta , Makino Kotaro , Uchida Noriyuki , Shuang Yi , Mori Shunsuke , Sutou Yuji , Krbal Milos , Fons Paul
Published: July 2022

The crystallization mechanism of sputter-deposited amorphous Mo–Te film is revealed enabling the large-area growth of 2D materials.
Deep-red light-emitting electrochemical cells based on phosphor-sensitized thermally activated delayed fluorescence
Authors: Chen Yin , Wang Yun-Xin , Lu Chin-Wei , Su Hai-Ching
Published: July 2022

Efficient deep-red electroluminescence can be obtained from light-emitting electrochemical cells (LECs) based on phosphor-sensitized thermally activated delayed fluorescence. The maximum external quantum efficiency of these LECs reaches >5%.
The mitochondrial translocator protein (TSPO): a key multifunctional molecule in the nervous system
Authors: El Chemali Léa , Akwa Yvette , Massaad-Massade Liliane
Published: July 2022

Translocator protein (TSPO, 18 kDa), formerly known as peripheral benzodiazepine receptor, is an evolutionary well-conserved protein located on the outer mitochondrial membrane. TSPO is involved in a variety of fundamental physiological functions and cellular processes. Its expression levels are regulated under many pathological conditions, therefore, TSPO has been proposed as a tool for diagnostic imaging and an attractive therapeutic drug target in the nervous system. Several synthetic TSPO ligands have thus been explored as agonists and antagonists for innovative treatments as neuroprotective and regenerative agents. In this review, we provide state-of-the-art knowledge of TSPO functions in the brain and peripheral nervous system. Particular emphasis is placed on its contribution to important physiological functions such as mitochondrial homeostasis, energy metabolism and steroidogenesis. We also report how it is involved in neuroinflammation, brain injury and diseases of the nervous system.
Tutorial: Data Collection and Documentation Strategies for Speech-Language Pathologist/Speech-Language Pathology Assistant Teams
Authors: Schultz Jennifer , Powell Rachel , Ross Kathleen D.
Published: July 2022

Purpose:

This tutorial outlines an approach for best practices for speech-language pathology assistants (SLPAs) to collect data and document services. The tutorial outlines methods for developing accurate and effective data collection skills and provides instructions and tools for collecting various types of data. The authors discuss the importance of data collection as it relates to the roles and responsibilities of speech-language pathologists (SLPs) and SLPAs. The process of planning for data collection, recording the data, and reporting data to the supervising SLP is outlined.

Conclusion:

Developing competence with a wide variety of data collection methods, data types, and documentation tools will assist SLPAs to accurately communicate the results of the services they provide, therefore enhancing the SLP's ability to make well-informed clinical decisions for the student.

Supplemental Material:

https://doi.org/10.23641/asha.20277726
Non‐instinct detection of cellphone usage from lane‐keeping performance based on eXtreme gradient boosting and optimal sliding windows
Authors: Liu Tao , Zhou Ziyao , Chai Chen , Islam Md. Mohaiminul
Published: July 2022

Driving distraction caused by cellphone usage has become a common safety threat. As distraction detection methods based on driver's position or eye movement may raise privacy issues, a promising way is to analyze the vehicle's lane‐keeping performance. This paper proposed a detection algorithm based on eXtreme gradient boosting (XGBoost), to develop a real‐time driving distraction detection based on lane‐keeping performance. The algorithm includes knowledge‐based volatility feature extraction and feature selection by recursive feature elimination (RFE). To obtain dynamic patterns of lane‐keeping performance affected by different types of cellphone usage, browsing a short message, browsing a long message, and answering a phone call, a driving simulator experiment was conducted on 28 drivers. Results showed that the proposed XGBoost‐RFE method is reliable and promising to predict phone usage with 80% accuracy. The results also evoke the fact that sliding window size, which is about 80% of subtask duration, can be appropriate for real‐time detection of multiple cellphone usages. For overlap percentages, 67% of sliding window size can balance the efficiency and continuity of data in adjacent sliding windows. The paper's potential application includes the design of a real‐time driving distraction detection system.
Characterization of Kepler targets based on medium-resolution LAMOST spectra analyzed with ROTFIT
Authors: Frasca A. , Molenda-Żakowicz J. , Alonso-Santiago J. , Catanzaro G. , De Cat P. , Fu J. N. , Zong W. , Wang J. X. , Cang T. , Wang J. T.
Published: July 2022

Aims. In this work we present the results of our analysis of 16 300 medium-resolution LAMOST spectra of late-type stars in the Kepler field with the aim of determining the stellar parameters, activity level, lithium atmospheric content, and binarity.

Methods. We have used a version of the code rotfit specifically developed for the lamost medium-resolution spectra to determine stellar parameters via the adoption of a grid of spectra of real stars. We provide a catalog with the atmospheric parameters (Teff, log g, and [Fe/H]), radial velocity (RV), and projected rotation velocity (v sin i). For cool stars (Teff ≤ 6500 K), we also calculated the Ha and Li iλ6708 equivalent width, which are important indicators of chromospheric activity and evolutionary stage, respectively.

Results. From the sample of 16 300 spectra, we have derived the RV and atmospheric parameters for 14 300 spectra of 7443 stars. Literature data (mainly from high- or medium-resolution spectra) were used for a quality control of the results and to assess the accuracy of the derived parameters. The Teff and log g values are in good agreement with the literature, although their distribution displays some clustering effects, which may be the result of the nonuniform distribution of the templates in the parameter space. The most relevant differences are found for [Fe/H], which appears to be overestimated for metal-poor stars; this overestimation is also likely due to the template grid. We propose a relation to correct the [Fe/H] values derived with rotfit. We were able to identify interesting objects, such as double-lined binaries, stars with variable RVs, lithium-rich giants, and emission-line objects. Based on the Hα flux, we found 327 active stars. We were able to detect the Li iλ6708 line and measure its equivalent width for 1657 stars, both giants and stars on the main sequence. Regarding the latter, we performed a discrete age classification based on the atmospheric lithium abundance and the upper envelopes of a few open clusters. Among the giants, we found 195 Li-rich stars, 161 of which are reported here for the first time. No relationship is found between stellar rotation and lithium abundance, which allows us to rule out merger scenarios as the predominant explanation of the enrichment of Li in our sample. The fraction of Li-rich giants, ≈ 4%, is higher than expected.
Multifrequency electromagnetic method for the hydrogeophysical characterization of hard-rock aquifers: the case of the upstream watershed of White Bandama (northern Ivory Coast)
Authors: Ouedraogo Moussa , Pessel Marc , Durand Véronique , Saintenoy Albane , Kamagate Bamory , Savane Issiaka
Published: July 2022

In West Africa, the drinking water supply relies on the hard-rock aquifers. In Ivory Coast, the population growth along with the climate changes make drinking water resources highly vulnerable. The White Bandama upstream watershed in northern Ivory Coast is located on a fissured hard-rock aquifer and is poorly known, both in the geometry of the reservoirs and in the hydrogeological potential of the reserves it contains. Indeed, the heterogeneous subsurface in this region shows high variability in the hydraulic conductivity inducing difficulties in the hydrogeological exploration. The determination of the geometry and hydrodynamic properties of the aquifer are required for a sustainable management of this water resource and for a better choice of future well locations. This study presents a hydrogeophysical approach using the multifrequency electromagnetic device PROMIS®, as well as lithology logs and geological information of a 30 × 30 km zone in the northwestern part of the White Bandama catchment. Our geophysical data are interpreted with 1D multi-layer models consistent with the discontinuities observed in lithology logs and the geology of the site. Results allow to precise the local thicknesses of the 3 main units of our study area down to 50 m, being from top to down, saprolite (which is often indured close to the surface), fissured-rock zone and rock substratum. Between the saprolite and the fissured zone, the main aquifer unit constitutes the interesting target for productive water wells. Its thickness ranges from 15 to 30 m. A detailed knowledge of the local aquifer geometry constitutes the first and crucial step before going further into a complete hydrogeological study.
Hexavalent chromium mobility in a high amorphous phase Chromite Ore Processing Residue (COPR) in the perspective of a chromium remediation treatment
Authors: Sanchez-Hachair Arnaud , Henry Natacha , Bastien Valentin , Diakite Khadijetou , Carlier Guillaume , Lefebvre Gaëtan , Hébrard-Labit Céline , Hofmann Annette
Published: July 2022

The mineralogical and chemical composition of chromite ore processing residue (COPR) from a site in the north of France (Lille) was investigated. The mineralogical composition was obtained by X-ray diffraction and Rietveld analysis. Geochemical characteristics were established based on elemental analysis, acid leaching, sequential extraction and a chemical equilibrium experiment. Remarkably, this COPR material is composed of 65% silica-rich amorphous phases. Another noticeable result is the presence of about 11% of quartz. Content in toxic Cr(VI) is about 4.9 g/kg, occurring in the solution phase or fixed in unstable crystalline cement phases. Literature data on most studied COPR materials allowed establishing a classification of the materials into (1) high calcium/low silica, (2) intermediate and (3) low calcium/high silica categories. This calcium–silica relation is indicative of the quality of the original ore and the geochemical changes having occurred in a COPR deposit over time, compared with fresh COPR produced from pure ore, and possibly the post-deposit admixture of other waste materials. The Lille material belongs to the third category. The high silica content has influenced the phase associations and their stabilities and favours Cr(VI) mobility. Extraction of leachable Cr(VI) from COPR induces formation of a new chemical equilibrium in the material with a recharge in mobile chromium due to dissolution of cement phases. However, the rate of equilibration is very slow. Four hundred days were needed for the high amorphous phase material in this study. Extraction of leachable Cr(VI) is not a suitable remediation method because it will not allow to withdraw the solid bound Cr(VI) from the material in a single treatment.
Positivity-preserving methods for ordinary differential equations
Authors: Blanes Sergio , Iserles Arieh , Macnamara Shev
Published: July 2022

Many important applications are modelled by differential equations with positive solutions. However, it remains an outstanding open problem to develop numerical methods that are both (i) of a high order of accuracy and (ii) capable of preserving positivity. It is known that the two main families of numerical methods, Runge–Kutta methods and multistep methods, face an order barrier. If they preserve positivity, then they are constrained to low accuracy: they cannot be better than first order. We propose novel methods that overcome this barrier: second order methods that preserve positivity unconditionally and a third order method that preserves positivity under very mild conditions. Our methods apply to a large class of differential equations that have a special graph Laplacian structure, which we elucidate. The equations need be neither linear nor autonomous and the graph Laplacian need not be symmetric. This algebraic structure arises naturally in many important applications where positivity is required. We showcase our new methods on applications where standard high order methods fail to preserve positivity, including infectious diseases, Markov processes, master equations and chemical reactions.
A two-stage structure with undesirable outputs: slacks-based and additive slacks-based measures DEA models
Authors: Asanimoghadam Keyvan , Salahi Maziar , Jamalian Ali , Shakouri Rita
Published: July 2022

The slacks-based measure (SBM) and additive SBM (ASBM) models are two widely used DEA models acting based on inputs and outputs slacks and giving efficiency scores between zero and unity. In this paper, we use both models with the application of the weak disposability axiom for outputs to evaluate efficiency in a two-stage structure in the presence of undesirable outputs. In the external evaluation, the SBM model is reformulated as a linear program and the ASBM model is reformulated as a second-order cone program (SOCP) that is a convex programming problem. In the internal evaluation, the SBM model for a specific choice of weights is linearized while the ASBM model is presented as an SOCP for arbitrary choice of weights. Finally, the proposed models are applied on a real dataset for which efficiency comparison and Pearson correlation coefficients analysis show advantages of the ASBM model to the SBM model.
Support Systems and Limitations in Therapeutic Abortion Care by the Gynecologist-Obstetrician of Public Hospitals in Peru
Authors: Matzumura Juan , Gutierrez-Crespo Hugo , Guevara Enrique , Meza Luis , La Rosa Mauricio
Published: July 2022

Objective To identify the barriers to provide to women and adequately train physicians on therapeutic abortions in public hospitals in Peru.

Methods Descriptive cross-sectional survey-based study. We invited 400 obstetrics and gynecology specialists from 7 academic public hospitals in Lima and 8 from other regions of Peru. Expert judges validated the survey.

Results We collected survey results from 160 participants that met the inclusion criteria. Of those, 63.7% stated that the hospital where they work does not offer abortion training. Most of the participants consider that the position of the Peruvian government regarding therapeutic abortion is indifferent or deficient. The major limitations to provide therapeutic abortions included Peruvian law (53.8%), hospital policies (18.8%), and lack of experts (10.6%).

Conclusion Most surveyed physicians supported therapeutic abortions and showed interest in improving their skills. However, not all hospitals offer training and education. The limited knowledge of the physicians regarding the law and institutional policies, as well as fear of ethical, legal, and religious repercussions, were the main barriers for providing abortions.
Transradial Embolization of Hemorrhagic Adrenal Myelolipoma
Authors: Mcnamara Griffin , Abdelbaki Ahmed , Mccarver Jeremy , Owens David , Malik Ali , Pereira Keith , Mendez Alejandro
Published: July 2022

Adrenal myelolipomas are largely benign, non-functioning, and asymptomatic adrenal tumors found incidentally on imaging. These tumors have an extremely low incidence and are exceedingly rare. We report a case of trans-radial embolization of hemorrhagic adrenal myelolipoma.
Nanoparticles of Liquid Smoke Rice Husk Inhibit Porphyromonas gingivalis
Authors: Arundina Ira , Diyatri Indeswati , Juliastuti Wisnu Setiari , Budhy Theresia Indah , Surboyo Meircurius Dwi Condro , Iskandar Benni , Halimah Anisa Nur , Moelyanto Azzahra Salsabila Adira , Ramaniasari Sheryn Marcha , Saputra Gustiadi
Published: July 2022

Objective Utilization of liquid smoke rice husk can be used as an alternative treatment because of the antimicrobial properties. Advances in drug delivery systems are increasingly developing to increase the bioavailability of drugs and reduce the side effects of these drugs, namely nanoparticles. In this study, nanoparticles of liquid smoke rice husk (nLSRH) were tested the antimicrobial against Porphyromonas gingivalis.

Materials and Method This type of research is an experimental in vitro laboratory using Porphyromonas gingivalis culture. nLSRH contained liquid smoke rice husk concentration of 1, 2.5, 5, 7.5, 10, 12.5, 15, and 17.5%. The antibacterial was performed using the dilution methods.

Results The nLRSH concentration of 1% showed clearest medium. The highest number of colonies Porphyromonas gingivalis was observed at nLSRH concentration of 1% (40.3 colony-forming unit [CFU]) and decreased at a concentration of 2.5% (11.3 CFU); other concentration or no bacterial colony growth was found. The nLSRH concentration of 2.5% can be determined as the minimum inhibitory concentration and nLSRH concentration of 5% can be determined as the minimum bactericidal concentration.

Conclusion nLSRH have antimicrobial activity against Porphyromonas gingivalis. This finding able to drive the next research to develop nLSRH as gingival and periodontitis disease is caused by Porphyromonas gingivalis.
Combined Therapy for Associated Orofacial Disorders—A Challenging Case Report
Authors: Barbosa Denise Fernandes , Bana Laura Fernandes , Berzin Fausto , Júnior Almiro José Machado
Published: July 2022

Health promotion and disease prevention link intricately with lifestyle habits such as a healthy diet, physical activity, and good sleep quality. Temporomandibular joint (TMJ) dysfunction and associated disorders can take away sleep and well-being depending on the form and intensity that affect the individual. A multidisciplinary effort has contributed to significant health advances, improving clinical outcomes concerning TMJ dysfunction. This report presents the case of a 37-year-old Caucasian female physical educator with a good healthy diet with complaints of tooth tightening, constant TMJ and neck pain, and tinnitus. The patient was treated with inferior occlusal splint placement and selective occlusal adjustments based on neuro-occlusal rehabilitation. The patient reported relief of pain symptoms with occlusal and body balance, discontinued analgesic medication, and maintained the occlusal splint to practice sports and sleep due to the perception of improved physical performance and sleep, and quality of life. Based on this report, it is necessary to analyze the causes and define the effects of different disorders to establish their diagnosis and treatment and changing patterns to reestablish functional balance.
Comparable Outcomes Between Native and Periprosthetic Fractures of the Distal Femur
Authors: Kaufman Matthew W. , Rascoe Alexander S. , Hii Jeffrey L. , Thom Mitchell L. , Levine Ari D. , Wilber Roger G. , Hirschfeld Adam G. , Romeo Nicholas M. , Wera Glenn D.
Published: July 2022

Despite the rising prevalence of arthroplasty and aging population, limited data exist regarding differences in periprosthetic fracture clinical outcomes compared with native counterparts. This study compares differences in hospital treatment, morbidity, and mortality associated with periprosthetic distal femur fractures at an urban level 1 trauma center. We retrospectively reviewed all adult AO/OTA type 33 fractures (526) that presented to our institution between 2009 and 2018. In total, 54 native and 54 periprosthetic fractures were matched by age and gender. We recorded demographics, operative measures, length of stay (LOS), discharge disposition, and mortality. We used McNemar's and paired t-tests for analysis where appropriate (p < 0.05) (IBM SPSS Statistics for Windows, Version 26.0. Armonk, NY; IBM Corp.). The average age at injury was 74 years ± 12 (native) compared with 73 years ± 12 (periprosthetic). After 1:1 matching, the groups had similar body mass index (31.01 vs. 32.98, p = 0.966 for native and periprosthetic, respectively) and mechanisms of injury with 38 native and 44 periprosthetic (p = 0.198) fractures from low-energy falls. Both groups had 51/54 fractures managed with open reduction internal fixation with a locking plate. The remaining were managed via amputation or intramedullary nail fixation. Mean operative time (144 minutes (±64) vs. 132 minutes (±62), p = 0.96) and estimated blood loss (319 mL (±362) vs. 289 mL (±231), p = 0.44) were comparable between the native and periprosthetic groups, respectively. LOS: 9 days ± 7 (native) versus 7 days ± 5 (periprosthetic, p = 0.31); discharge disposition (to skilled nursing facility/rehab): n = 47 (native) versus n = 43 (periprosthetic, p = 0.61); and mortality: n = 6 (native) versus n = 8 (periprosthetic, p = 0.55). No significant differences were observed. We found no statistical differences in morbidity and mortality in periprosthetic distal femur fractures treated over 10 years at a level 1 trauma center. Native and periprosthetic AO/OTA type 33 distal femur fractures are serious injuries with similar outcomes at a level 1 trauma center.
Post-Pulmonary Embolism Syndrome and Functional Outcomes after Acute Pulmonary Embolism
Authors: Luijten Dieuwke , de Jong Cindy M. M. , Ninaber Maarten K. , Spruit Martijn A. , Huisman Menno V. , Klok Frederikus A.
Published: July 2022

Survivors of acute pulmonary embolism (PE) are at risk of developing persistent, sometimes disabling symptoms of dyspnea and/or functional limitations despite adequate anticoagulant treatment, fulfilling the criteria of the post-PE syndrome (PPES). PPES includes chronic thromboembolic pulmonary hypertension (CTEPH), chronic thromboembolic pulmonary disease, post-PE cardiac impairment (characterized as persistent right ventricle impairment after PE), and post-PE functional impairment. To improve the overall health outcomes of patients with acute PE, adequate measures to diagnose PPES and strategies to prevent and treat PPES are essential. Patient-reported outcome measures are very helpful to identify patients with persistent symptoms and functional impairment. The primary concern is to identify and adequately treat patients with CTEPH as early as possible. After CTEPH is ruled out, additional diagnostic tests including cardiopulmonary exercise tests, echocardiography, and imaging of the pulmonary vasculature may be helpful to rule out non-PE–related comorbidities and confirm the ultimate diagnosis. Most PPES patients will show signs of physical deconditioning as main explanation for their clinical presentation. Therefore, cardiopulmonary rehabilitation provides a good potential treatment option for this patient category, which warrants testing in adequately designed and executed randomized trials. In this review, we describe the definition and characteristics of PPES and its diagnosis and management.
Motivators of employee commitment at multinational organisations in emerging economies: Empirical evidence from Nigeria
Authors: Inegbedion Henry
Published: July 2022

In the past decade, there has been an increase in the studies on employee turnover in Nigeria. The spate of studies is suggestive that employees are not very committed to their jobs in most organisations. Nevertheless, the unemployment rate poses a big constraint to the mobility of labour and thus increases the possibility of disguised commitment. To this end, this study sought to ascertain the major determinants of employee commitment in business organisations. The specific objectives were to investigate the extent to which stunted mobility, extrinsic motivators, intrinsic motivators and organisational climate influence employee commitment, as well as the extent to which respondents’ perception of employees’ commitment relates to socio-demographic variables like age, gender and educational qualification. The population of sthe study consisted of employees of seven multinational companies in Edo, Delta, Bayelsa and Rivers states of Nigeria. The study employed the survey design with a questionnaire serving as the research instrument. Data were analysed using structural equation modelling. The results indicated that stunted mobility, extrinsic motivation, intrinsic motivation and organisational climate are significant motivators of employee commitment. Respondents’ perceptions did not vary with demographic variables.
Increased intrinsic anomalous Hall effect from rare earth content in amorphous SmxCo1−x films
Authors: Sharma P. A. , Sharma A. L. Lima , Lidsky D. , Schehrer E. , Young K. , Gilbert S. J. , Siegal M. P. , Lu T. M.
Published: July 2022

The low temperature anomalous Hall effect in amorphous sputtered SmxCo1−x films is investigated. The microstructure and amorphous nature of the films were characterized by local area diffraction through transmission electron microscopy. The Sm/Co ratio was changed to elucidate the origin of the anomalous Hall effect, which is a proxy for spin polarized transport. The anomalous Hall effect obeys a scaling relation that points to an intrinsic Berry-curvature based mechanism, consistent with recent reports on other amorphous magnetic materials. The anomalous Hall angle increases with increasing Sm content and reaches large values of ∼1%. This observation is related to recent measurements of the local structure in amorphous Sm–Co alloys and suggests that rare earth elements can be utilized to improve electrical control over spin polarization in amorphous magnetic films.
Few-cycle optical field breakdown and damage of gallium oxide and gallium nitride
Authors: Tripepi Michael , Zhang Simin , Harris Brandon , Talisa Noah , Yoo Jae-Hyuck , Peelaers Hartwin , Elhadj Selim , Chowdhury Enam
Published: July 2022

Both gallium oxide and gallium nitride have great potential for use as high power transparent conducting oxide materials for a wide range of optoelectronic applications. It is, therefore, important to determine the dynamic optical field breakdown for these materials. Here, we report laser damage thresholds for Ga2O3 and GaN using 9 fs few-cycle pulses with a center wavelength near 760 nm. We determine laser-induced damage thresholds (LIDTs) for both single pulse and multi-pulse exposures, with multi-pulse LIDT showing significant reduction compared to single pulse LIDT (in some cases, >50%), possibly due to laser-induced defects. We show that Ga2O3 and GaN have an ultrafast optical field breakdown of 23 and 18 GV/m when nearly polarized along their [010] and [111] planes, respectively, extending their suitability for high power applications to the ultrashort pulse regime. To accurately characterize the excited carrier density criteria in which apparent laser damage occurs, carrier excitation dynamics for the entire laser pulse interaction were simulated using a modified Keldysh ionization model. For the measured single-shot threshold fluences, the plasma critical density was surpassed by 2 orders of magnitude and 2D finite-difference time-domain simulations were employed to understand the pulse interaction near the surface.