bluuebunny/crossref_metadata_2025 huggingface dataset:
The vertebrate Aqp14 water channel is a neuropeptide-regulated polytransporter
Authors: Chauvigné François , Yilmaz Ozlem , Ferré Alba , Fjelldal Per Gunnar , Finn Roderick Nigel , Cerdà Joan
Published: December 2019

Water channels (aquaporins) were originally discovered in mammals with fourteen subfamilies now identified (AQP0-13). Here we show that a functional Aqp14 subfamily phylogenetically related to AQP4-type channels exists in all vertebrate lineages except hagfishes and eutherian mammals. In contrast to the water-selective classical aquaporins, which have four aromatic-arginine constriction residues, Aqp14 proteins present five non-aromatic constriction residues and facilitate the permeation of water, urea, ammonia, H2O2and glycerol. Immunocytochemical assays suggest that Aqp14 channels play important osmoregulatory roles in piscine seawater adaptation. Our data indicate that Aqp14 intracellular trafficking is tightly regulated by the vasotocinergic/isotocinergic neuropeptide and receptor systems, whereby protein kinase C and A transduction pathways phosphorylate highly conserved C-terminal residues to control channel plasma membrane insertion. The neuropeptide regulation of Aqp14 channels thus predates the vasotocin/vasopressin regulation of AQP2-5-6 orthologs observed in tetrapods. These findings demonstrate that vertebrate Aqp14 channels represent an ancient subfamily of neuropeptide-regulated polytransporters.
Electrically tunable effective g-factor of a single hole in a lateral GaAs/AlGaAs quantum dot
Authors: Studenikin Sergei , Korkusinski Marek , Takahashi Motoi , Ducatel Jordan , Padawer-Blatt Aviv , Bogan Alex , Austing D. Guy , Gaudreau Louis , Zawadzki Piotr , Sachrajda Andrew , Hirayama Yoshiro , Tracy Lisa , Reno John , Hargett Terry
Published: December 2019

Electrical tunability of the $$g$$g-factor of a confined spin is a long-time goal of the spin qubit field. Here we utilize the electric dipole spin resonance (EDSR) to demonstrate it in a gated GaAs double-dot device confining a hole. This tunability is a consequence of the strong spin-orbit interaction (SOI) in the GaAs valence band. The SOI enables a spin-flip interdot tunneling, which, in combination with the simple spin-conserving charge transport leads to the formation of tunable hybrid spin-orbit molecular states. EDSR is used to demonstrate that the gap separating the two lowest energy states changes its character from a charge-like to a spin-like excitation as a function of interdot detuning or magnetic field. In the spin-like regime, the gap can be characterized by the effective $$g$$g-factor, which differs from the bulk value owing to spin-charge hybridization, and can be tuned smoothly and sensitively by gate voltages.
Coherent control of magnon radiative damping with local photon states
Authors: Yao Bimu , Yu Tao , Gui Y. S. , Rao J. W. , Zhao Y. T. , Lu W. , Hu C.-M.
Published: December 2019

A magnon, the collective excitation of ordered spins, can spontaneously radiate a travelling photon to an open system when decaying to the ground state. However, in contrast to electric dipoles, magnetic dipoles by magnons are more isolated from the environment, limiting their radiation and coherent communication with photons. The recent progresses in strongly coupled magnon-photon system have stimulated the manipulation of magnon radiation via tailoring the photon states. Here, by loading an yttrium iron garnet sphere in a one-dimensional waveguide cavity supporting both the travelling and standing photon modes, we demonstrate a significant magnon radiative damping that is proportional to the local density of photon states (LDOS). By modulating the magnitude and/or polarization of LDOS, we can flexibly tune the photon emission and magnon radiative damping. Our findings provide a way to manipulate photon emission from magnon radiation, which could help harness angular momentum generation, transfer, and storage in magnonics.
Enhanced precision bound of low-temperature quantum thermometry via dynamical control
Authors: Mukherjee Victor , Zwick Analia , Ghosh Arnab , Chen Xi , Kurizki Gershon
Published: December 2019

High-precision low-temperature thermometry is a challenge for experimental quantum physics and quantum sensing. Here we consider a thermometer modeled by a dynamically-controlled multilevel quantum probe in contact with a bath. Dynamical control in the form of periodic modulation of the energy-level spacings of the quantum probe can dramatically increase the maximum accuracy bound of low-temperatures estimation, by maximizing the relevant quantum Fisher information. As opposed to the diverging relative error bound at low temperatures in conventional quantum thermometry, periodic modulation of the probe allows for low-temperature thermometry with temperature-independent relative error bound. The proposed approach may find diverse applications related to precise probing of the temperature of many-body quantum systems in condensed matter and ultracold gases, as well as in different branches of quantum metrology beyond thermometry, for example in precise probing of different Hamiltonian parameters in many-body quantum critical systems.
Synthesis of micro/nanoscaled metal–organic frameworks and their direct electrochemical applications
Authors: Xiao Xiao , Zou Lianli , Pang Huan , Xu Qiang
Published: December 2019

Developing strategies to control the morphology and size of MOFs is important for their applications in batteries, supercapacitors and electrocatalysis. This review focuses on the design and fabrication of MOFs at the micro/nanoscale.
SPE cartridges with a 3D graphene framework for extraction of triclosan in environmental water
Authors: Thesing Anderson , Poersch Sílvia , Medeiros Leonardo F. , Santos Jacqueline F. L. , Fernandes Andreia N.
Published: December 2019

Graphene framework obtained with a simple methodology as a high efficient sorbent in SPE cartridges for extraction of triclosan.
A competitive electrochemical aptamer-based method for aflatoxin B1 detection with signal-off response
Authors: Wang Chao , Li Yapiao , Zhao Qiang
Published: December 2019

Electrochemical detection of AFB1 with square wave voltammetry by using a complementary DNA modified gold electrode and a methylene blue labeled aptamer.
ONO-1301 loaded nanocomposite scaffolds modulate cAMP mediated signaling and induce new bone formation in critical sized bone defect
Authors: Kuttappan Shruthy , Jo Jun-ichiro , Menon Deepthy , Ishimoto Takuya , Nakano Takayoshi , Nair Shantikumar V. , Tabata Yasuhiko , Nair Manitha B.
Published: December 2019

Small molecule ONO-1301 displayed chemotactic and osteoinductive potential in critical sized bone defects and suggested as a replacement for high cost and unstable protein based growth factors.
Melatonin/polydopamine nanostructures for collective neuroprotection-based Parkinson's disease therapy
Authors: Srivastava Anup K. , Roy Choudhury Subhasree , Karmakar Surajit
Published: December 2019

The bioinspired melatonin/polydopamine nanostructures confer superior neuroprotection in dopaminergic neuronsviaanti-oxidative, anti-inflammatory and anti-apoptotic effect in Parkinson's disease models.
Ultrasmall theranostic nanozymes to modulate tumor hypoxia for augmenting photodynamic therapy and radiotherapy
Authors: Dan Qing , Hu Dehong , Ge Yongshuai , Zhang Shiyu , Li Sanqing , Gao Duyang , Luo Wanxian , Ma Teng , Liu Xin , Zheng Hairong , Li Yingjia , Sheng Zonghai
Published: December 2019

A theranostic nanozyme (Au NCs-ICG) decomposes intratumoral H2O2 to O2, subsequently enhancing photodynamic therapy and radiotherapy with the guidance of multimodal imaging.
Ring size matters: supramolecular isomerism in self-assembled redox-active tetra- and hexaruthenium macrocycles
Authors: Fink Daniel , Orth Nicole , Linseis Michael , Ivanović-Burmazović Ivana , Winter Rainer F.
Published: December 2019

The selective formation of a kinetically stable metallamacrocyclic hexaruthenium complex and its clean conversion into a thermodynamically more stable tetraruthenium isomer as well their molecular structures and redox properties are reported.
3D lanthanide-coordination frameworks constructed by a ternary mixed-ligand: crystal structure, luminescence and luminescence sensing
Authors: Xu Qi-Wei , Dong Gaoyun , Cui Ruifang , Li Xia
Published: December 2019

Highly stable 3D Ln-MOFs were constructed by a ternary mixed-ligand. The Sm/Dy-MOFs present dual-emission while the Tb/Eu-MOFs exhibit red/green MC emission. The detection of quercetin and Fe3+ion was realized based on the luminescence Eu-MOF under the excitation of 358 nm.
Quantifying the rigidity of 2D carbides (MXenes)
Authors: Hu Tao , Yang Jinxing , Li Wu , Wang Xiaohui , Li Chang Ming
Published: December 2019

The intrinsic in-plane stiffness (C) and out-of-plane rigidity (D) of four typical MXenes are quantified by first-principles calculations, with both exhibiting a strong thickness-dependent character.
Reduction of water-mediated repulsion drives poly(N-vinylcaprolactam) collapse upon heating
Authors: Mochizuki Kenji
Published: December 2019

Thermo-sensitive aqueous polymers undergo a coil-to-globule transition on heating, with drastic chemical and structural changes. We performed molecular dynamics simulations for PVCL in water to study the driving forces for the polymer's collapse.
Triple 1D1D superatomic bonding. Au22(dppo)6 as a Π4- and Δ2-triply bonded cluster based on Au11 assembled units
Authors: Muñoz-Castro Alvaro
Published: December 2019

Our analysis reveals the Au22(dppo)6 cluster as a triple-bonded 22-valence electron (ve) supermolecule, featuring a bonding scheme based on 1D + 1D shell combinations, which largely contrasts with the developed bonding of [Au13]5+ core derivatives.
The role of vanadium species during SO2 removal over a V2O5/AC catalyst
Authors: Guo Qianqian , Jing Wen , Hou Yaqin , Li Yulin , Li Fenghai , Huang Zhanggen
Published: December 2019

Mechanism of SO2 removal over a V2O5/AC catalyst.
Porous lantern-like MFI zeolites composed of 2D nanosheets for highly efficient visible light-driven photocatalysis
Authors: Liu Hui , Cheng Dang-guo , Chen Fengqiu , Zhan Xiaoli
Published: December 2019

Porous lantern-like MFI zeolites composed of 2D nanosheets were fabricated for highly efficient visible light-driven photocatalysis.
Cu4I4-cubane clusters based on 10-(aryl)phenoxarsines and their luminescence
Authors: Galimova Milyausha F. , Zueva Ekaterina M. , Dobrynin Alexey B. , Samigullina Aida I. , Musin Rustem R. , Musina Elvira I. , Karasik Andrey A.
Published: December 2019

The synthesis, structural and photophysical characterization, and theoretical study of tetranuclear copper(i) cubane-type Cu4I4 clusters with different 10-(aryl)phenoxarsine ligands are presented.
Two zinc metal–organic framework isomers based on pyrazine tetracarboxylic acid and dipyridinylbenzene for adsorption and separation of CO2 and light hydrocarbons
Authors: Ye Yu , Du Jianfeng , Sun Libo , Liu Yuchuan , Wang Shun , Song Xiaowei , Liang Zhiqiang
Published: December 2019

Two zinc metal–organic framework isomers were designed and constructed using 2,3,5,6-tetrakis(4-carboxyphenyl)pyrazine and dipyridinylbenzene as co-ligands for gas adsorption and separation.
A review of the treatment of low–medium strength domestic wastewater using aerobic granulation technology
Authors: We Angel Chyi En , Aris Azmi , Mohd Zain Nor Azimah
Published: December 2019

In recent times, the treatment of actual low-medium strength domestic wastewater using aerobic granulation has been proposed as a promising alternative to replace the conventional activated sludge system.
Anti-tumor and immunomodulatory activity of the aqueous extract of Sarcodon imbricatus in vitro and in vivo
Authors: Tan Xupeng , Chen Wang , Jiao Chunwei , Liang Huijia , Yun Hao , He Chunyan , Chen Jiaming , Ma Xiaowei , Xie Yizhen
Published: December 2019

Sarcodon imbricatus (S. imbricatus), a well-known edible mushroom, is one of the most commonly consumed wild mushrooms in China because of its nutritional value.
On-demand sample injection: combining acoustic actuation with a tear-drop shaped nozzle to generate droplets with precise spatial and temporal control
Authors: Brenker Jason C. , Devendran Citsabehsan , Neild Adrian , Alan Tuncay
Published: December 2019

An on-demand droplet injection method for controlled delivery of nanolitre-volume liquid samples to scientific instruments for subsequent analysis is presented.
Electret-induced electric field assisted luminescence modulation for interactive visualized sensing in a non-contact mode
Authors: Wang Hai Lu , Su Li , Li Hua Yang , Wang Zhong Lin , Zhu Guang
Published: December 2019

Non-contact interactive visualized sensing is demonstrated, including the recognition of external objects and a hidden bar code.
The detection and identification of dengue virus serotypes with quantum dot and AuNP regulated localized surface plasmon resonance
Authors: Chowdhury Ankan Dutta , Takemura Kenshin , Khorish Indra Memdi , Nasrin Fahmida , Ngwe Tun Mya Myat , Morita Kouichi , Park Enoch Y.
Published: December 2019

A fluorometric sensing system using LSPR phenomenon between fluorescent quantum dots and its adjacent AuNP to detect four closely related but serologically distinct dengue viruses (DENVs).
Organic–inorganic hybrids for CO2 sensing, separation and conversion
Authors: Rebber Matthias , Willa Christoph , Koziej Dorota
Published: December 2019

Organic–Inorganic hybrids – from individual building blocks to an artificial carbon cycle and beyond.
Enzymatically triggered chromogenic cross-linking agents under physiological conditions
Authors: Fujita Hikaru , Dou Jinghuai , Matsumoto Nobuyuki , Wu Zhiyuan , Lindsey Jonathan S.
Published: December 2019

Oxidative dimerization of an indoxyl moiety, released by glycosidase action in aqueous solution, yields an indigoid dye in formats that enable bioconjugation and molecular cross-linking.
A novel cobalt doped MOF-based photocatalyst with great applicability as an efficient mediator of peroxydisulfate activation for enhanced degradation of organic pollutants
Authors: Lv Shi-Wen , Liu Jing-Min , Zhao Ning , Li Chun-Yang , Wang Zhi-Hao , Wang Shuo
Published: December 2019

A novel cobalt doped MOF-based photocatalyst was synthesized for the first time and employed as a mediator of peroxydisulfate activation for enhanced pollutant degradation.
Theoretical screening of efficient single-atom catalysts for nitrogen fixation based on a defective BN monolayer
Authors: Ma Zuju , Cui Zhitao , Xiao Chengwei , Dai Wen , Lv Yaohui , Li Qiaohong , Sa Rongjian
Published: December 2019

A single V atom anchored on h-BN exhibits outstanding catalytic activity for the NRR with a low onset potential of 0.25 V.
Core–shell PdCu bimetallic colloidal nanoparticles in Sonogashira cross-coupling reaction: mechanistic insights into the catalyst mode of action
Authors: Olekszyszen Drielly N. , Albuquerque Brunno L. , Silva Dagoberto de O. , Tripodi Guilherme L. , de Oliveira Daniela C. , Domingos Josiel B.
Published: December 2019

PdCu bimetallic colloidal nanoparticles-catalyzed Sonogashira coupling is demonstrated proceed by a quasi-homogeneous pathway with involvement of an alkynylcopper intermediate.
Unsymmetric 2-phenylpyridine (ppy)-type cyclometalated Ir(iii) complexes bearing both 5,9-dioxa-13b-boranaphtho[3,2,1-de]anthracene and phenylsulfonyl groups for tuning optoelectronic properties and electroluminescence abilities
Authors: Zhang Yindi , Chen Xi , Song Dongdong , Zhong Daokun , Yang Xiaolong , Sun Yuanhui , Liu Boao , Zhou Guijiang , Wu Zhaoxin
Published: December 2019

Unsymmetric Ir(iii) complexes with 5,9-dioxa-13b-boranaphtho[3,2,1-de]anthracene and phenylsulfonyl groups showing high EL efficiencies.
Combined NMR, DFT and X-ray studies highlight structural and hydration changes of [Ln(AAZTA)]− complexes across the series
Authors: Baranyai Zsolt , Delli Castelli Daniela , Platas-Iglesias Carlos , Esteban-Gomez David , Bényei Attila , Tei Lorenzo , Botta Mauro
Published: December 2019

1H NMR, CEST, DFT and X-ray studies reveal that [Ln(AAZTA)]− chelates experience a transition across the Ln(iii) series from fast-exchanging, bisaqua 9-coordinate species, to slow-exchanging monoaqua 8-coordinate structures.
Solvent-controlled assembly of pillar[5]arene-based supramolecular networks via π–π interactions for white light modulation
Authors: Li Qi , Liu Yuezhou , Liu Peiren , Shangguan Liqing , Zhu Huangtianzhi , Shi Bingbing
Published: December 2019

A supramolecular network based on pyrene-containing pillar[5]arene and a red emissive Eu(iii) complex was constructed, whose assembly and emission can be controlled by solvent polarity, eventually achieving white light emission.
Visible sensing of conformational transition in model silk peptides based on a gold nanoparticles indicator
Authors: Jia Lan , Zhang Jiabing , Liu Sumei , Chen Song , Zhu Jingxin
Published: December 2019

Au NPs prepared in situ were utilized as a built-in colorimetric indicator to monitor conformation changes of a silk peptide.
Evaluation of anti-inflammatory, antinociceptive and biological activities of Cenostigma macrophyllum standardized extracts and determination and quantification of the main metabolites
Authors: Moreira Bruno Oliveira , de Carvalho Anaildes Lago , Alves Clayton Queiroz , Morbeck Lorena Lôbo Brito , Cruz Mariluze Peixoto , Yatsuda Regiane , David Juceni Pereira , David Jorge Mauricio
Published: December 2019

The stem barks and leaves of Cenostigma macrophyllum are used in Brazilian folk medicines in the treatment of stomach and intestinal diseases.
Retracted Article: Upregulation of miR-26b alleviates morphine tolerance by inhibiting BDNF via Wnt/β-catenin pathway in rats
Authors: Liu Xing , Geng Jiefeng , Bu Huilian , Ma Junqi , Ai Yanqiu
Published: December 2019

Morphine is a commonly used analgesic drug. However, long-term use of morphine will cause tolerance which limits its clinical application in pain treatment.
Preparation andin vitrobioactivity evaluation of N-heterocyclic-linked dihomooxacalix[4]arene derivatives
Authors: An Lin , Liu Jia-dong , Peng Xian-na , Zheng You-guang , Wang Chan , Huang Tong-hui
Published: December 2019

Based on superior prospects of calixarenes in biomedical fields, the bioactivity of novel N-heterocyclic linked dihomooxacalix[4]arene derivatives4a–4nwere evaluated in vitro. The crystal structure of4fwas also determined by X-ray diffraction.
Influence of magnetic field on morphological structures and physiological characteristics of bEnd.3 cells cultured on polypyrrole substrates
Authors: Yang Xue , Ma Ke , Yang Libo , Chen Yujuan , Qu Yingmin , Wang Ying , Wang Xinyue , Yang Fan , Sun Qi , Song Zhengxun , Wang Zuobin
Published: December 2019

The combination of magnetic stimulation and polypyrrole (PPy) substrates regulate the bEnd.3 cells mechanical and physical characterizations.
Comprehensive evaluation of the composition of Mingshan Laochuancha green tea and demonstration of hypolipidemic activity in a zebrafish obesity model
Authors: Xiao Yue , Wu Yanping , Zhong Kai , Gao Hong
Published: December 2019

MLGT was investigated for the first time, and results revealed excellent quality and potent hypolipidemic activity of MLGT.
Novel base-initiated cascade reactions of hemiindigos to produce dipolar γ-carbolines and indole-fused pentacycles
Authors: Velezheva V. S. , Babii O. L. , Khodak A. A. , Alekseeva E. A. , Nelyubina Yu V. , Godovikov I. A. , Peregudov A. S. , Majorov K. B. , Nikonenko B. V.
Published: December 2019

Based on hemiindigos we developed novel reactions for producing γ-carbolines and their precursors that appeared to be active against MTB.
Flavin-mediated extracellular electron transfer in Gram-positive bacteria Bacillus cereus DIF1 and Rhodococcus ruber DIF2
Authors: Tian Tian , Fan Xiaoyang , Feng Man , Su Lin , Zhang Wen , Chi Huimei , Fu Degang
Published: December 2019

A flavin-mediated EET process was reported here in two new isolated electrochemically active Gram-positive bacterial strains DIF1 and DIF2.
Comparative study of uranium and thorium metal ion adsorption by gum ghatti grafted poly(acrylamide) copolymer composites
Authors: Shelar-Lohar Gauri , Joshi Satyawati
Published: December 2019

Uranium and thorium ions were selectively removed from aqueous solution using synthesized gum ghatti grafted poly(acrylamide) copolymer composite.
Thermal behavior and combustion of Al nanoparticles/ MnO2-nanorods nanothermites with addition of potassium perchlorate
Authors: Song Jiaxing , Guo Tao , Yao Miao , Ding Wen , Zhang Xiaonan , Bei Fengli , Tang Jian , Huang Junyi , Yu Zhongshen
Published: December 2019

To explore the effect of potassium perchlorate (KClO4) on Al nanoparticles/MnO2-nanorods nanothermite systems, in this paper, Al/MnO2 nanothermites with different mass fraction of KClO4 were prepared by electrospray.
Symmetric exponential amplification reaction-based DNA nanomachine for the fluorescent detection of nucleic acids
Authors: Yan Qi , Duan Qiuyue , Huang Yuqi , Guo Jing , Zhong Liang , Wang Hong , Yi Gang
Published: December 2019

This label-free and ultra-low background signal DNA nanomachine was based on P-HP mediated S-EXPAR and the G-triplex/ThT complex.
Synthesis and biological activities of local anesthetics
Authors: Zhou Shiyang , Huang Gangliang , Chen Guangying
Published: December 2019

Local anesthetics are mainly used in stomatology, ophthalmology, gynecology and surgery to temporarily relieve pain.
Effects of the aspect ratio of the conductive agent on the kinetic properties of lithium ion batteries
Authors: Song Hyeonjun , Oh Yeonjae , Çakmakçı Nilüfer , Jeong Youngjin
Published: December 2019

We fabricated lithium-ion batteries (LIBs) using the Super P and carbon nanotubes (CNTs) as conductive agents to investigate the effect of the aspect ratio of conductive agent on the kinetic properties of LIB.
Imaging effects of hyperosmolality on individual tricellular junctions
Authors: Huang Kaixiang , Zhou Lushan , Alanis Kristen , Hou Jianghui , Baker Lane A.
Published: December 2019

A nanoscale electrochemical imaging method was used to reveal heterogeneity present in conductance at epithelial cell junctions under hyperosmotic stress.
Roles of entropic and solvent damping forces in the dynamics of polymer tethered nanoparticles and implications for single molecule sensing
Authors: Ma Guangzhong , Wan Zijian , Zhu Hao , Tao Nongjian
Published: December 2019

Tethering a particle to a surface with a single molecule allows detection of the molecule and analysis of molecular conformations and interactions.
Local mobility in electrochemically inactive sodium in hard carbon anodes after the first cycle
Authors: Jensen Anders C. S. , Olsson Emilia , Au Heather , Alptekin Hande , Yang Zhengqiang , Cottrell Stephen , Yokoyama Koji , Cai Qiong , Titirici Maria-Magdalena , Drew Alan J.
Published: December 2019

Sodium ion batteries are a promising alternative to current lithium ion battery technology, providing relatively high capacity and good cycling stability at low cost.
Enhancement of the intrinsic light harvesting capacity of Cs2AgBiBr6double perovskiteviamodification with sulphide
Authors: Pai Narendra , Lu Jianfeng , Wang Mingchao , Chesman Anthony S. R. , Seeber Aaron , Cherepanov Pavel V. , Senevirathna Dimuthu C. , Gengenbach Thomas R. , Medhekar Nikhil V. , Andrews Philip C. , Bach Udo , Simonov Alexandr N.
Published: December 2019

Light harvesting capacity of caesium silver bismuth bromide double perovskite need to be enhanced to render this non-toxic and thermodynamically stable material suitable for photovoltaic applications, for example as a top layer in tandem solar cells.
Self-defending additively manufactured bone implants bearing silver and copper nanoparticles
Authors: van Hengel I. A. J. , Tierolf M. W. A. M. , Valerio V. P. M. , Minneboo M. , Fluit A. C. , Fratila-Apachitei L. E. , Apachitei I. , Zadpoor A. A.
Published: December 2019

Exploiting the synergistic antibacterial behavior of Ag and Cu nanoparticles in self-defending implants.
Structural effects on the charge transport properties of chemically and electrochemically doped dioxythiophene polymers
Authors: Pittelli Sandra L. , De Keersmaecker Michel , Ponder Jr James F. , Österholm Anna M. , Ochieng Melony A. , Reynolds John R.
Published: December 2019

Dioxythiophene polymers incorporating linear side chains show higher solid-state conductivity and enhanced redox properties.
Thermal phase design of ultrathin magnetic iron oxide films: from Fe3O4 to γ-Fe2O3 and FeO
Authors: Hamed Mai Hussein , Mueller David N. , Müller Martina
Published: December 2019

Thermodynamically “active” oxide interfaces alter the standard iron oxide phase diagram of complex heterostructures. By controlling the effective oxygen pressure, selected iron oxides phases can be designed through a thermal phase design.
Bright tricolor ultrabroad-band emission carbon dots for white light-emitting diodes with a 96.5 high color rendering index
Authors: Li Xiaoxi , Wang Zifei , Liu Yang , Zhang Weiguang , Zhu Chaofeng , Meng Xiangeng
Published: December 2019

Synthesis of tricolor ultrabroad-band emissive CDs and luminescence films for WLEDs with high CRI and adjustable CCT.
Parental Language Input to Children With Hearing Loss: Does It Matter in the End?
Authors: Nittrouer Susan , Lowenstein Joanna H. , Antonelli Joseph
Published: December 2019

Purpose

Parental language input (PLI) has reliably been found to influence child language development for children at risk of language delay, but previous work has generally restricted observations to the preschool years. The current study examined whether PLI during the early years explains variability in the spoken language abilities of children with hearing loss at those young ages, as well as later in childhood.

Participants

One hundred children participated: 34 with normal hearing, 24 with moderate losses who used hearing aids (HAs), and 42 with severe-to-profound losses who used cochlear implants (CIs). Mean socioeconomic status was middle class for all groups. Children with CIs generally received them early.

Method

Samples of parent–child interactions were analyzed to characterize PLI during the preschool years. Child language abilities (CLAs) were assessed at 48 months and 10 years of age.

Results

No differences were observed across groups in how parents interacted with their children. Nonetheless, strong differences across groups were observed in the effects of PLI on CLAs at 48 months of age: Children with normal hearing were largely resilient to their parents' language styles. Children with HAs were most influenced by the amount of PLI. Children with CIs were most influenced by PLI that evoked child language and modeled more complex versions. When potential influences of preschool PLI on CLAs at 10 years of age were examined, those effects at preschool were replicated. When mediation analyses were performed, however, it was found that the influences of preschool PLI on CLAs at 10 years of age were partially mediated by CLAs at preschool.

Conclusion

PLI is critical to the long-term spoken language abilities of children with hearing loss, but the style of input that is most effective varies depending on the severity of risk for delay.
An Introduction to Calculating Bayes Factors in JASP for Speech, Language, and Hearing Research
Authors: Brydges Christopher R. , Gaeta Laura
Published: December 2019

Purpose

Evidence-based data analysis methods are important in clinical research fields, including speech-language pathology and audiology. Although commonly used, null hypothesis significance testing (NHST) has several limitations with regard to the conclusions that can be drawn from results, particularly nonsignificant findings. Bayes factors (BFs) can be used to complement NHST and quantify the strength of evidence in favor of 1 hypothesis over another, given the data: commonly, either the alternate hypothesis over the null or the null hypothesis over the alternate. This article provides an introduction to BFs through JASP, a free, open-source, graphics-based statistics package that allows researchers to easily conduct both NHST and Bayesian analyses in a clear and reproducible manner.

Method and Results

Both traditional NHST analyses and Bayesian equivalents for correlations,ttests, and analyses of variance were conducted in JASP using simulated data, with explanations of analysis options, statistical output, and figures provided. These examples also demonstrate what NHST and BFs can and cannot infer about a data set. Additionally, BFs were calculated from the summary statistics of published nonsignificant results to illustrate how JASP may be useful to consumers of research who only have access to statistics provided in a published study.

Conclusions

Bayesian analyses are underutilized in speech, language, and hearing research. By complementing traditional NHST analyses with BFs, researchers can directly test for and quantify the strength of evidence during hypothesis testing, thereby drawing stronger conclusions from their research and providing more relevant information for clinicians and researchers in the field.
Eliciting Stuttering in Laboratory Contexts
Authors: Jackson Eric S. , Gracco Vincent , Zebrowski Patricia M.
Published: December 2019

Purpose

The contextual variability of stuttering events makes it difficult to reliably elicit stuttered speech in laboratory settings. As a result, studies that compare stuttered versus fluent speech are difficult to conduct and, thus, are limited in the literature. The purpose of the current study is to describe a novel approach to elicit stuttering during laboratory testing.

Method

A semistructured clinical interview leveraging the phenomenon of stuttering anticipation was administered to 22 adults who stutter (1st visit). The interview was used to generate participant-specific anticipated and unanticipated word lists, which were used as stimuli during a 2nd visit so that the validity of the method could be tested.

Results

The method yielded a near-equal distribution of unambiguously stuttered and fluent utterances (43.6% and 43.5%, respectively). Moreover, 12.9% of the utterances were judged to be ambiguous, that is, not unambiguously stuttered or fluent.

Conclusion

This approach outperformed previous attempts to elicit stuttering during laboratory testing. It could be implemented in future studies that compare neural, physiological, or behavioral correlates of fluent versus stuttered speech.
Detection and localisation of multiple brain tumours by object counting and elimination
Authors: Nasor Mohamed , Obaid Walid
Published: December 2019

Brain cancer is a major health problem that affects the lives of many people. Clinicians depend on their medical knowledge to analyse laboratory test results and clinical information extracted manually from medical images, to identify the essential characteristics of tumours such as size, shape, and location. The accurate diagnosis of brain tumours is very essential for deciding the most appropriate treatment protocols and procedures. Apart from being tedious, slow and time‐consuming manual segmentation of brain image scans is also prone to human error. In order to enhance the accuracy and reliability of the diagnosis of brain tumours, rigorous image processing and segmentation is required. In this study the authors present an automated image segmentation method for detecting and localising multiple brain tumours of different sizes and intensities by using a technique of object counting coupled with an evaluation process. The object counting technique were carried out using multiple binary images with different threshold values, and the evaluation process was based on assessment criteria of specific tumour parameters. Different magnetic resonance images with multiple tumours were used for testing the proposed method. The results indicated that the proposed method is effective in detecting and localising multiple true tumours in the brain.
Stereo matching for infrared images using guided filtering weighted by exponential moving average
Authors: Zhu Chengtao , Chang Yau‐Zen
Published: December 2019

Infrared imaging is less susceptible to illumination conditions and haze than visible light imaging. The advantage makes infrared sensing suitable for providing remote visibility with reduced distortion. However, infrared images tend to have low resolution and lack rich textures that facilitate stereo matching. To enhance the applicability of infrared stereo imaging, the authors re‐examine the guided‐image techniques to include advanced edge‐aware filters for aggregation and propose a novel guided‐image filtering scheme here. Based on the exponential moving average, the weights are recursively calculated such that all pixels on the infrared image pair can contribute to a discrepancy cost. The arrangement allows additional pixels to be involved in the cost aggregation to reduce the demand for rich texture. Experimental results using the colour and thermal stereo (CATS) benchmark testbed demonstrate that the proposed approach outperforms several state‐of‐art approaches in generating accurate disparity maps.
Simulation and optimisation design of the solenoid valve
Authors: Zheng Yunhong , Zhou Zongjie , Dai Rongsheng
Published: December 2019

This study first analyses the problems that the solenoid valve generates during operation. Then the electromagnetic valve was modelled and ANSYS finite element analysis simulation software was used to simulate the electromagnetic field and transient magnetic field of the solenoid valve. The magnetic induction intensity distribution diagram and magnetic field distribution diagram of the electromagnet were obtained. According to the simulation results of the solenoid valve, the magnetic flux leakage line is blocked after the magnetic isolation cover is added, the magnetic induction strength of the iron core and the valve head is increased, the leakage magnetic flux is reduced, and the structure is optimised.
Nonlinear vibration of fluid conveying cantilever nanotube resting on visco‐pasternak foundation using non‐local strain gradient theory
Authors: Saffari Pouyan R. , Fakhraie Mehran , Roudbari Mir Abbas
Published: December 2019

Frequency analysis and forced vibration response of fluid conveying viscoelastic nanotubes that resting on nonlinear visco‐pasternak foundation under magnetic field using size‐dependent non‐local strain gradient theory are considered in this study. It is supposed that the nanotube is modelled as cantilever type beam and subjected to a harmonic load. The material property of the nanotube is modelled by Kelvin–Voigt viscoelastic constitutive relation and slip boundary conditions of nanotube conveying fluid are taken into account. Extended Galerkin method is used to obtain the nonlinear differential equation of the motion and the multiple time‐scales method is utilised to investigate the primary vibration resonance of the nanotube. Firstly, the frequency analysis is performed on the linear system and the effects of foundation coefficients on the natural frequency are investigated at several flow velocities. Moreover, the resonance properties of the system are solved in closed form and analysed from the frequency‐response curves, and then the effects of the non‐local parameter, length scale parameter and magnetic field are fully investigated. In this case, non‐local parameter, length scale parameter and foundation coefficients are highly influential on the frequency response of the considered system.
SUGAR: An improved empirical model of Type Ia supernovae based on spectral features
Authors: Léget P.-F. , Gangler E. , Mondon F. , Aldering G. , Antilogus P. , Aragon C. , Bailey S. , Baltay C. , Barbary K. , Bongard S. , Boone K. , Buton C. , Chotard N. , Copin Y. , Dixon S. , Fagrelius P. , Feindt U. , Fouchez D. , Hayden B. , Hillebrandt W. , Kim A. , Kowalski M. , Kuesters D. , Lombardo S. , Lin Q. , Nordin J. , Pain R. , Pecontal E. , Pereira R. , Perlmutter S. , Ponder K. A. , Pruzhinskaya M. V. , Rabinowitz D. , Rigault M. , Runge K. , Rubin D. , Saunders C. , Says L.-P. , Smadja G. , Sofiatti C. , Suzuki N. , Taubenberger S. , Tao C. , Thomas R. C.
Published: December 2019

Context.Type Ia supernovae (SNe Ia) are widely used to measure the expansion of the Universe. Improving distance measurements of SNe Ia is one technique to better constrain the acceleration of expansion and determine its physical nature.

Aims.This document develops a new SNe Ia spectral energy distribution (SED) model, called the SUpernova Generator And Reconstructor (SUGAR), which improves the spectral description of SNe Ia, and consequently could improve the distance measurements.

Methods.This model was constructed from SNe Ia spectral properties and spectrophotometric data from the Nearby Supernova Factory collaboration. In a first step, a principal component analysis-like method was used on spectral features measured at maximum light, which allowed us to extract the intrinsic properties of SNe Ia. Next, the intrinsic properties were used to extract the average extinction curve. Third, an interpolation using Gaussian processes facilitated using data taken at different epochs during the lifetime of an SN Ia and then projecting the data on a fixed time grid. Finally, the three steps were combined to build the SED model as a function of time and wavelength. This is the SUGAR model.

Results.The main advancement in SUGAR is the addition of two additional parameters to characterize SNe Ia variability. The first is tied to the properties of SNe Ia ejecta velocity and the second correlates with their calcium lines. The addition of these parameters, as well as the high quality of the Nearby Supernova Factory data, makes SUGAR an accurate and efficient model for describing the spectra of normal SNe Ia as they brighten and fade.

Conclusions.The performance of this model makes it an excellent SED model for experiments like the Zwicky Transient Facility, the Large Synoptic Survey Telescope, or the Wide Field Infrared Survey Telescope.
Pulsational properties of ten new slowly pulsating B stars
Authors: Fedurco M. , Paunzen E. , Hümmerich S. , Bernhard K. , Parimucha Š.
Published: December 2019

Context. Slowly pulsating B (SPB) stars are upper main-sequence multi-periodic pulsators that show non-radial g-mode oscillations driven by the κ mechanism acting on the iron bump. These multi-periodic pulsators have great asteroseismic potential and can be employed for the calibration of stellar structure and evolution models of massive stars.

Aims. We collected a sample of ten hitherto unidentified SPB stars with the aim of describing their pulsational properties and identifying pulsational modes.

Methods. Photometric time series data from various surveys were collected and analyzed using diverse frequency search algorithms. We calculated astrophysical parameters and investigated the location of our sample stars in the log Teff vs. log L/L⊙ diagram. Current pulsational models were calculated and used for the identification of pulsational modes in our sample stars. An extensive grid of stellar models along with their g-mode eigenfrequencies was calculated and subsequently cross-matched with the observed pulsational frequencies. The best-fit models were then used in an attempt to constrain stellar parameters such as mass, age, metallicity, and convective overshoot.

Results. We present detected frequencies, corresponding g-mode identifications, and the masses and ages of the stellar models producing the best frequency cross-matches. We partially succeeded in constraining stellar parameters, in particular concerning mass and age. Where applicable, rotation periods have been derived from the spacing of triplet component frequencies. No evolved SPB stars are present in our sample. We identify two candidate high-metallicity objects (HD 86424 and HD 163285), one young SPB star (HD 36999), and two candidate young SPB stars (HD 61712 and HD 61076).

Conclusions. We demonstrate the feasibility of using ground-based observations to perform basic asteroseismological analyses of SPB stars. Our results significantly enlarge the sample of known SPB stars with reliable pulsational mode identifications, which provides important input parameters for modeling attempts aiming to investigate the internal processes at work in upper main-sequence stars.
Propagation of waves above a plage as observed by IRIS and SDO
Authors: Kayshap P. , Srivastava A. K. , Tiwari S. K. , Jelínek P. , Mathioudakis M.
Published: December 2019

Context. Magnetohydrodynamic waves are proposed as the mechanism that transport sufficient energy from the photosphere to heat the transition region (TR) and corona. However, various aspects of these waves, such as their nature, propagation characteristics, and role in the atmospheric heating process, remain poorly understood and require further investigation.

Aims. We aim to investigate wave propagation within an active-region plage using IRIS and AIA observations. The main motivation is to understand the relationship between photospheric and TR oscillations. We identify the locations in the plage region where magnetic flux tubes are essentially vertical, and further we discuss the propagation and nature of these waves.

Methods. We used photospheric observations from AIA (i.e., AIA 1700 Å) as well as TR imaging observations (IRIS SJI Si IV 1400.0 Å). We investigated the propagation of the waves into the TR from the photosphere using wavelet analysis (e.g., cross power, coherence, and phase difference) with the inclusion of a customized noise model.

Results. A fast Fourier transform algorithm shows the distribution of wave power at photospheric and TR heights. Waves with periods between 2.0 and 9.0 min appear to be correlated between the photosphere and TR. We exploited a customized noise model to estimate the 95% confidence levels for the IRIS observations. On the basis of the sound speed in the TR and estimated propagation speed, these waves are best interpreted as slow magneto acoustic waves (SMAWs). It is found that almost all locations show correlation and propagation of waves over a broad range of periods from the photosphere to the TR. Our observations suggest that the SMAWs spatial occurrence frequency is stronly correlated between the photosphere and transition region within plage areas.
Magnetic Rayleigh–Taylor instability at a contact discontinuity with an oblique magnetic field
Authors: Vickers E. , Ballai I. , Erdélyi R.
Published: December 2019

Aims.We investigate the nature of the magnetic Rayleigh–Taylor instability at a density interface that is permeated by an oblique homogeneous magnetic field in an incompressible limit.

Methods.Using the system of linearised ideal incompressible magnetohydrodynamics equations, we derive the dispersion relation for perturbations of the contact discontinuity by imposing the necessary continuity conditions at the interface. The imaginary part of the frequency describes the growth rate of waves due to instability. The growth rate of waves is studied by numerically solving the dispersion relation.

Results.The critical wavenumber at which waves become unstable, which is present for a parallel magnetic field, disappears because the magnetic field is inclined. Instead, waves are shown to be unstable for all wavenumbers. Theoretical results are applied to diagnose the structure of the magnetic field in prominence threads. When we apply our theoretical results to observed waves in prominence plumes, we obtain a wide range of field inclination angles, from 0.5° up to 30°. These results highlight the diagnostic possibilities that our study offers.
Cell death in Leishmania
Authors: Basmaciyan Louise , Casanova Magali
Published: December 2019

Leishmaniases still represent a global scourge and new therapeutic tools are necessary to replace the current expensive, difficult to administer treatments that induce numerous adverse effects and for which resistance is increasingly worrying. In this context, the particularly original organization of the Leishmania parasite in comparison to higher eukaryotes is a great advantage. It allows for the development of new, very specific, and thus non-cytotoxic treatments. Among these originalities, Leishmania cell death can be cited. Despite a classic pattern of apoptosis, key mammalian apoptotic proteins are not present in Leishmania, such as caspases, cell death receptors, and anti-apoptotic molecules. Recent studies have helped to develop a better understanding of parasite cell death, identifying new proteins or even new apoptotic pathways. This review provides an overview of the current knowledge on Leishmania cell death, describing its physiological roles and its phenotype, and discusses the involvement of various proteins: endonuclease G, metacaspase, aquaporin Li-BH3AQP, calpains, cysteine proteinase C, LmjHYD36 and Lmj.22.0600. From these data, potential apoptotic pathways are suggested. This review also offers tools to identify new Leishmania cell death effectors. Lastly, different approaches to use this knowledge for the development of new therapeutic tools are suggested: either inhibition of Leishmania cell death or activation of cell death for instance by treating cells with proteins or peptides involved in parasite death fused to a cell permeant peptide or encapsulated into a lipidic vector to target intra-macrophagic Leishmania cells.
Training bei Multipler Sklerose
Authors: Mehrholz Jan , Thomas Simone , Elsner Bernhard
Published: December 2019

Für den Kliniker ergibt sich die Herausforderung, generelle Empfehlungen, beispielsweise aus einer Leitlinie, für ein Ausdauertraining auf individuelle Patienten anzuwenden bzw. eine geeignete und motivierende Übungsauswahl individuell zu gestalten.
Neurophysiologische Defizite und deren Therapie bei Multipler Sklerose
Authors: Grothe Matthias
Published: December 2019

Die Neurophysiologie stellt in der Diagnostik der Multiplen Sklerose eine wichtige Ergänzung dar. Sie zeigt Defizite schon zu Beginn der Erkrankung auf und ermöglicht im Verlauf die Abschätzung der Progredienz. Daneben eröffnet sie auch perspektivisch therapeutische Ansätze in Kombination mit etablierten Therapien der Physiotherapie oder Psychotherapie.
Disseminierte Tuberkulose imitiert metastasiertes Magenkarzinom – ein Fallbericht
Authors: Voit Florian Maximilian , Abdelhafez Mohamed , Rothe Kathrin , Slotta-Huspenina Julia , Gaa Jochen , Schmid Roland M. , Spinner Christoph Daniel
Published: December 2019

Bei zuletzt stabiler nach in den Jahren davor steigender Inzidenz der aktiven Tuberkuloseerkrankung in Deutschland sind zunehmend auch extrapulmonale Manifestationen von differenzialdiagnostischer Bedeutung. Insbesondere bei Verdacht auf eine metastasierte Tumorerkrankung kommt die Tuberkulose differenzialdiagnostisch in Betracht. Wir berichten über einen 77-jährigen Patienten, der sich mit einseitigen Beinschmerzen und B-Symptomatik vorstellte. Neben einer osteolytischen Sakralwirbelkörper(SWK)-1-Läsion ergab sich bildgebend der Verdacht auf ein metastasiertes Magenkarzinom. In den gewonnenen Biopsien zeigten sich nekrotisierende Granulome mit Riesenzellen, im Verlauf gelang der kulturelle und molekularbiologische Nachweis von Mycobacterium tuberculosis anstelle neoplastischen Gewebes. Nach Sicherung einer disseminierten Tuberkulose mit ossärer Beteiligung erfolgte eine antibiotische Therapie nach nationalen Leitlinien über insgesamt neun Monate. Klinisch und radiologisch zeigte sich in der Abschlussuntersuchung nach Therapieende eine Regredienz der Befunde im Sinne einer definitiven Heilung.