bluuebunny/crossref_metadata_2025 huggingface dataset:
TopControl: A Tool to Prioritize Candidate Disease-associated Genes based on Topological Network Features
Authors: Nazarieh Maryam , Helms Volkhard
Published: December 2019

Putative disease-associated genes are often identified among those genes that are differentially expressed in disease and in normal conditions. This strategy typically yields thousands of genes. Gene prioritizing schemes boost the power of identifying the most promising disease-associated genes among such a set of candidates. We introduce here a novel system for prioritizing genes where a TF-miRNA co-regulatory network is constructed for the set of genes, while the ranks of the candidates are determined by topological and biological factors. For datasets on breast invasive carcinoma and liver hepatocellular carcinoma this novel prioritization technique identified a significant portion of known disease-associated genes and suggested new candidates which can be investigated later as putative disease-associated genes.
Neuronal and perineuronal changes of cerebral cortex after exposure to inhaled particulate matter
Authors: Kim So Young , Lee Da-hye , Park Sohyeon , Kim Byeong-Gon , Jang An-Soo , Oh Seung Ha , Lee Jun Ho , Suh Myung-Whan , Park Moo Kyun
Published: December 2019

The inhalation of particulate matter (PM) increases the perineuronal nets (PNNs) in the cerebral cortex; however, little is known about the related molecular changes. We explored how PM exposure impacted cognitive function and the levels of PNN-related genes. BALB/c mice (6-week-old females, n = 32) were exposed to 1–5-μm diesel-extracted particles (DEPs) (100 µg/m3, 5 hours per day, 5 days per week) and categorized into the following four groups: 1) 4-week DEP exposure (n = 8); 2) 4-week control (n = 8); 3) 8-week DEP exposure (n = 8); and 4) 8-week control (n = 8). The Y-maze test and olfactory function test were conducted after 4 and 8 weeks of DEP exposure. The prefrontal cortex, olfactory bulb and temporal cortex were harvested from the animals in each group. The expression of genes related to PNNs (Tenascin C, matrix metalloproteinase [MMP]14, MMP9) and synaptic vesicular transporters of vesicular glutamergic transporter 1 (VGLUT1), VGLUT2, vesicular GABAergic transporter (VGAT) were measured. The temporal cortex was immunostained for neurocan, VGLUT1, and VGAT. The 4-week DEP group had lower total arm entry in the Y-maze test and olfactory sensitivity. These impaired behavioral functions recovered in the 8-week DEP group. Expression of tenascin C and MMP9 were increased in the cerebral cortex in the 8-week DEP group compared with the control group. The levels of VGLUT1, VGLUT2, and VGAT were elevated in the cerebral cortex of the 8-week DEP group compared with the control group. In immunostaining of the temporal cortex, the expression of neurocan, VGLUT1, and GAD67 were increased in the 8-week DEP group compared with the control group. The 4-week DEP inhalation impaired spatial activities and olfactory sensitivities. After 8 weeks of DEP exposure, the PNN components and their proteolytic enzymes and the vesicular transporters increased in the cerebral cortex.
Effects of multiple N, P, and K fertilizer combinations on adzuki bean (Vigna angularis) yield in a semi-arid region of northeastern China
Authors: Yin Zhi-chao , Guo Wen-yun , Liang Jie , Xiao Huan-yu , Hao Xi-yu , Hou An-fu , Zong Xu-xiao , Leng Ting-rui , Wang Ying-jie , Wang Qing-yu , Yin Feng-xiang
Published: December 2019

Nitrogen (N), phosphorus (P), and potassium (K) exert various effects on adzuki bean yields. Our research was conducted in a semi-arid area, and four test sites were established in environments that have chernozem or sandy loam soils. During a five-year period, the effects of N, P, and K fertilizers on yield were comprehensively investigated in field trials (2014–2016) and for model-implementation trials (2017–2018), with models established prior to the latter. In the field trials, 23 treatments comprising different N, P, and K combinations significantly affected both yield and yield components, and regression analysis indicated that the experimental results were suitable for model establishment. The model subsequently demonstrated that the yield and the yield components were more sensitive to N and K fertilizer than to P fertilizer. Moreover, the yield and yield components increased. These yield increases were intense in response to the 0.5 to 1.34 levels in terms of the single effects; interaction effects; and the effects of combinations of N, P, and K fertilizers. Moreover, the effects of combinations of N, P, and K fertilizers were more significant on yield than were the single or interaction effects of N, P, and K fertilizers. The optimal fertilizer combination that resulted in high yields (≥1941.53 kg ha−1) comprised 57.23–68.43 kg ha−1 N, 36.04–47.32 kg ha−1 P2O5 and 50.29–61.27 kg ha−1 K2O. The fertilizer combination that resulted in the maximum yield was 62.98 kg ha−1 N, 47.04 kg ha−1 P2O5 and 59.95 kg ha−1 K2O (N:P2O5:K2O = 1:0.75:0.95), which produced the model-expected yield in trials at multiple sites. An economical fertilizer combination was determined on the basis of the best fertilizer measures in consideration of the cost of fertilizer and seed; this combination achieved yields of 2236.17 kg ha−1, the profit was 15,653.16 Yuan ha−1, and the corresponding rates were 57.60 kg ha−1 N, 47.03 kg ha−1 P2O5, and 31.64 kg ha−1 K2O (N:P2O5:K2O = 1:0.82:0.55).
Identification of a novel cholesterol-lowering dipeptide, phenylalanine-proline (FP), and its down-regulation of intestinal ABCA1 in hypercholesterolemic rats and Caco-2 cells
Authors: Banno Arata , Wang Jilite , Okada Kenji , Mori Ryosuke , Mijiti Maihemuti , Nagaoka Satoshi
Published: December 2019

There has been no report about in vivo active cholesterol-lowering dipeptide in any protein origin, despite their potential health benefits. Cattle heart protein hydrolysate ultra-filtrate (HPHU, molecular weight < ca. 1,000 Da peptide mixture) exhibits cholesterol-lowering activity in hypercholesterolemic rats, but the active peptide in HPHU that lowers serum cholesterol levels and its molecular mechanism are unknown. In this study, we separated and purified HPHU to identify a novel cholesterol-lowering dipeptide (phenylalanine-proline, FP) and characterized the mechanism underlying its effects in vivo and in vitro. We identified FP as an active peptide from HPHU by MALDI-TOF mass spectrometry. FP significantly decreased serum total and non-HDL cholesterol and hepatic cholesterol levels in rats. FP significantly increased serum HDL cholesterol, accompanied by a significant decrease in the atherogenic index. FP also significantly increased fecal cholesterol and acidic steroid excretion. Moreover, FP significantly decreased ATP-binding cassette transporter A1 (ABCA1) expression in the rat jejunum and reduced cholesterol absorption in Caco-2 cells. We found a novel cholesterol-lowering dipeptide FP that could improve cholesterol metabolism via the down-regulation of intestinal ABCA1. The cholesterol-lowering action induced by FP was disappeared in PepT1KO mice. FP-induced cholesterol-lowering action is mediated via PepT1 in mice.
Nanoparticle-Biological Interactions in a Marine Benthic Foraminifer
Authors: Ciacci Caterina , Grimmelpont Margot V. , Corsi Ilaria , Bergami Elisa , Curzi Davide , Burini Debora , Bouchet Vincent M. P. , Ambrogini Patrizia , Gobbi Pietro , Ujiié Yurika , Ishitani Yoshiyuki , Coccioni Rodolfo , Bernhard Joan M. , Frontalini Fabrizio
Published: December 2019

The adverse effects of engineered nanomaterials (ENM) in marine environments have recently attracted great attention although their effects on marine benthic organisms such as foraminifera are still largely overlooked. Here we document the effects of three negatively charged ENM, different in size and composition, titanium dioxide (TiO2), polystyrene (PS) and silicon dioxide (SiO2), on a microbial eukaryote (the benthic foraminifera Ammonia parkinsoniana) using multiple approaches. This research clearly shows the presence, within the foraminiferal cytoplasm, of metallic (Ti) and organic (PS) ENM that promote physiological stress. Specifically, marked increases in the accumulation of neutral lipids and enhanced reactive oxygen species production occurred in ENM-treated specimens regardless of ENM type. This study indicates that ENM represent ecotoxicological risks for this microbial eukaryote and presents a new model for the neglected marine benthos by which to assess natural exposure scenarios.
Investigating sex differences, cognitive effort, strategy, and performance on a computerised version of the mental rotations test via eye tracking
Authors: Toth Adam J. , Campbell Mark J.
Published: December 2019

Mental rotation tests (MRTs) have previously shown one of the most prominent sex differences in cognitive psychology, marked by a large male performance advantage. However, debate continues over the reasons for these sex differences. Previously, we used pupillometry to demonstrate sex differences in the cognitive effort invoked during the original MRT. Here, we evaluated the magnitude of sex differences during performance on a computerized version of the Vandenberg and Kuse MRT. Secondly, we examined whether fixation metrics could illuminate strategy use by participants. Finally, we used pupillometry to investigate whether cognitive effort differed between sexes and trials of different difficulty. While our results demonstrate no performance differences between sexes on the computerized MRT, fixation patterns provided evidence that gaze strategy was associated with performance on different parts of the test. Moreover, we show the cognitive demand of the V&K MRT, evidenced by large task dependent increases in participants’ pupil diameters.
Dual action of amitriptyline on NMDA receptors: enhancement of Ca-dependent desensitization and trapping channel block
Authors: Stepanenko Yulia D. , Boikov Sergei I. , Sibarov Dmitry A. , Abushik Polina A. , Vanchakova Nina P. , Belinskaia Daria , Shestakova Natalia N. , Antonov Sergei M.
Published: December 2019

Although the tricyclic antidepressant amitriptyline (ATL) is widely used in the clinic, the mechanism underlying its high therapeutic efficacy against neuropathic pain remains unclear. NMDA receptors (NMDARs) represent a target for ATL and are involved in sensitization of neuropathic pain. Here we describe two actions of ATL on NMDARs: 1) enhancement of Ca2+-dependent desensitization and 2) trapping channel block. Inhibition of NMDARs by ATL was found to be dependent upon external Ca2+concentration ([Ca2+]) in a voltage-independent manner, with an IC50of 0.72 μM in 4 mM [Ca2+]. The ATL IC50value increased exponentially with decreasing [Ca2+], with ane-fold change observed per 0.69 mM decrease in [Ca2+]. Loading neurons with BAPTA abolished Ca2+-dependent inhibition, suggesting that Ca2+affects NMDARs from the cytosol. Since there is one known Ca2+-dependent process in gating of NMDARs, we conclude that ATL most likely promotes Ca2+-dependent desensitization. We also found ATL to be a trapping open-channel blocker of NMDARs with an IC50of 220 µM at 0 mV. Ane-fold change in ATL IC50was observed to occur with a voltage shift of 50 mV in 0.25 mM [Ca2+]. Thus, we disclose here a robust dependence of ATL potency on extracellular [Ca2+], and demonstrate that ATL bound in the NMDAR pore can be trapped by closure of the channel.
In vitro metabolomic
footprint of the Echinococcus multilocularis
metacestode
Authors: Ritler Dominic , Rufener Reto , Li Jia V. , Kämpfer Urs , Müller Joachim , Bühr Claudia , Schürch Stefan , Lundström-Stadelmann Britta
Published: December 2019

Alveolar echinococcosis (AE) is a zoonotic disease that is deadly if
left untreated. AE is caused by the larval metacestode stage of the cestode
Echinococcus multilocularis. Better knowledge
on the host-parasite interface could yield novel targets for improvement of the
treatment against AE. We analyzed culture media incubated with in vitro grown E.
multilocularis metacestodes by 1H nuclear
magnetic resonance spectroscopy to identify the unknown metabolic footprint of the
parasite. Moreover, we quantitatively analyzed all amino acids, acetate, glucose,
lactate, and succinate in time-course experiments using liquid chromatography and
enzymatic assays. The E. multilocularis
metacestodes consumed glucose and, surprisingly, threonine and produced succinate,
acetate, and alanine as major fermentation products. The metabolic composition of
vesicle fluid (VF) from in vitro grown E. multilocularis metacestodes was different from
parasite-incubated culture medium with respect to the abundance, but not the
spectrum, of metabolites, and some metabolites, in particular amino acids,
accumulated in the VF. Overall, this study presents the first characterization of
the in vitro metabolic footprint of E. multilocularis metacestodes and VF composition, and
it provides the basis for analyses of potentially targetable pathways for future
drug development.
Author Correction: Stretchable Electrospun PVDF-HFP/Co-ZnO Nanofibers as Piezoelectric Nanogenerators
Authors: Parangusan Hemalatha , Ponnamma Deepalekshmi , Al-Maadeed Mariam Al Ali
Published: December 2019

An amendment to this paper has been published and can be accessed via a link at the top of the paper.
Author Correction: Identification of specialized pro-resolving mediator clusters from healthy adults after intravenous low-dose endotoxin and omega-3 supplementation: a methodological validation
Authors: Norris Paul C. , Skulas-Ray Ann C. , Riley Ian , Richter Chesney K. , Kris-Etherton Penny M. , Jensen Gordon L. , Serhan Charles N. , Maddipati Krishna Rao
Published: December 2019

An amendment to this paper has been published and can be accessed via a link at the top of the paper.
Author Correction: Novel 2-phenyloxypyrimidine derivative induces apoptosis and autophagy via inhibiting PI3K pathway and activating MAPK/ERK signaling in hepatocellular carcinoma cells
Authors: Wang Jing , Sun Peng , Chen Yijun , Yao Hequan , Wang Shuzhen
Published: December 2019

An amendment to this paper has been published and can be accessed via a link at the top of the paper.
Films of rhombohedral graphite as two-dimensional topological semimetals
Authors: Slizovskiy Sergey , McCann Edward , Koshino Mikito , Fal’ko Vladimir I.
Published: December 2019

Topologically non-trivial states appear in a number of materials ranging from spin-orbit-coupling driven topological insulators to graphene. In multivalley conductors, such as mono- and bilayer graphene, despite a zero total Chern number for the entire Brillouin zone, Berry curvature with different signs concentrated in different valleys can affect the material’s transport characteristics. Here we consider thin films of rhombohedral graphite, which appear to retain truly two-dimensional properties up to tens of layers of thickness and host two-dimensional electron states with a large Berry curvature, accompanied by a giant intrinsic magnetic moment carried by electrons. The size of Berry curvature and magnetization in the vicinity of each valley can be controlled by electrostatic gating leading to a tuneable anomalous Hall effect and a peculiar structure of the two-dimensional Landau level spectrum.
Correction: Microelectrochemical cell arrays for whole-cell currents recording through ion channel proteins based on trans-electroporation approach
Authors: Zheng Tianyang , Baaken Gerhard , Behrends Jan C. , Rühe Jürgen
Published: December 2019

Correction for ‘Microelectrochemical cell arrays for whole-cell currents recording through ion channel proteins based on trans-electroporation approach’ by Tianyang Zheng, et al., Analyst, 2020, DOI: 10.1039/c9an01737b.
A manganese oxide (MnOx)-Based colorimetric nanosensor for indirect measurement of lipophilic and hydrophilic antioxidant capacity
Authors: Can Kader , Üzer Ayşem , Apak Reşat
Published: December 2019

A rapid, simple, and cheap colorimetric nanosensor for indirect measurement of hydrophilic and lipophilic antioxidant activity using mixed-valence MnOx NPs as an oxidase-mimicking catalyst was proposed.
Design and construction of a carbon paste electrode modified with molecularly imprinted polymer-grafted nanocomposites for the determination of thyroxin in biological samples
Authors: Mardani Leila , Vardini Mohammad Taghi , Es'haghi Moosa , Ghorbani Kalhor Ebrahim
Published: December 2019

In this study, a novel nano-molecularly imprinted polymer was synthesized and used to prepare modified carbon paste electrodes.
Phosphorus removal from oil and aqueous phases with a multifunctional adsorbent
Authors: Ashraf Imtiaz , Li Cheng , Wang Tianshu , Li Rong , Chen Bin
Published: December 2019

Phosphorus removal from oil and aqueous phases using a multifunctional adsorbent modified with an IDS ligand.
Self-adaptive antibacterial surfaces with bacterium-triggered antifouling-bactericidal switching properties
Authors: Zhang Yidan , Zhang Xiang , Zhao Yu-Qing , Zhang Xin-Yang , Ding Xiaokang , Ding Xuejia , Yu Bingran , Duan Shun , Xu Fu-Jian
Published: December 2019

Self-adaptive antibacterial surfaces with bacterium-triggered antifouling-bactericidal switching properties were readily constructed for the therapy of catheter-associated infection.
A distance-triggered signaling on–off mechanism by plasmonic Au nanoparticles: toward advanced photocathodic DNA bioanalysis
Authors: Fan Gao-Chao , Zhao Huan , Ma Linzheng , Lu Yanwei , Luo Xiliang
Published: December 2019

An advanced signaling on–off mechanism was first proposed by integrating exciton–plasmon coupling and exciton energy transfer into cathodic PEC bioassays for ultrasensitive and specific detection of tDNA.
Two Ni/Co-substituted sandwich-type germanomolybdates based on an unprecedented trivacant polyanion [α-GeMo10O36]8−
Authors: Xu Hui , Liu Xing-Man , Su Tan , Chen Wei-Chao , Su Zhong-Min
Published: December 2019

Two sandwich-type germanomolybdates with unprecedented trivacant [α-GeMo10O36]8− fragments and {M3O4} quasi-cubane units were obtained. They exhibited electrocatalytic behaviours for H2O2 reduction and photocatalytic properties for CO2 conversion.
Coupling single particle ICP-MS with field-flow fractionation for characterizing metal nanoparticles contained in nanoplastic colloids
Authors: Barber Angela , Kly Sun , Moffitt Matthew G. , Rand Logan , Ranville James F.
Published: December 2019

Composite particles containing metallic nanoparticles in a polymer matrix, which simulate environmentally-transformed nanoparticles, are effectively characterized by combining field-flow fractionation with single particle ICP-MS.
Release of TiO2nanoparticles from painted surfaces in cold climates: characterization using a high sensitivity single-particle ICP-MS
Authors: Azimzada Agil , Farner Jeffrey M. , Hadioui Madjid , Liu-Kang Carolyn , Jreije Ibrahim , Tufenkji Nathalie , Wilkinson Kevin J.
Published: December 2019

Wet, cold or freeze-thaw conditions enhanced the release of TiO2nanoparticles from outdoor painted surfaces.
Purified plant cell walls with adsorbed polyphenols alter porcine faecal bacterial communities during in vitro fermentation
Authors: Grant Lucas J. , Mikkelsen Deirdre , Phan Anh Dao T. , Kang Seungha , Ouwerkerk Diane , Klieve Athol V. , Gidley Michael J. , Williams Barbara A.
Published: December 2019

A simplified in vitro model to indicate microbiota changes to polyphenols associated with dietary fibre in whole fruits, noting differences in bacterial populations between polyphenolic groups during fermentation.
How mechanical forces can modulate the metal affinity and selectivity of metal binding sites in proteins
Authors: Dudev Todor , Frutos Luis Manuel , Castaño Obis
Published: December 2019

Mechanical forces play a key role in essential biological processes including cell growth, division, deformation, adhesion, migration and intra-cell interactions. The effect of mechanical forces in modulating the structure and properties of metal-occupied protein binding sites has not been fully understood. Here, by employing a combination of density functional theory (DFT) calculations and polarizable continuum model (PCM) computations applied on model metal-loaded EF-hand binding sites, we shed light on the intimate mechanism of the Mg2+/Ca2+ competition impacted by the application of mechanical stimuli. Applying mechanical force with a specific directionality and magnitude may shift the balance between the competing metal cations in favor of a given contestant depending on the composition and strength of the coordinative bonds and robustness of the metal binding site. Furthermore, the calculations help to determine the range of mechanical rupture forces typical for these structures: these range from 0.4 to 1.5 nN depending on the nature of the metal and amino acid residue. This positions the strength of the Mg2+–O and Ca2+–O coordinative bonds between that of typical covalent and hydrogen bonds. The bonds between the metal cation and the charged amino acid residue rupture at higher forces (∼1.2–1.5 nN) relative to those of their metal–noncharged counterparts which dissociate at ∼0.2–0.4 nN.
Effect of an electric field during the deposition of silicon dioxide thin films by plasma enhanced atomic layer deposition: an experimental and computational study
Authors: Beladiya Vivek , Becker Martin , Faraz Tahsin , Kessels W. M. M. (Erwin) , Schenk Paul , Otto Felix , Fritz Torsten , Gruenewald Marco , Helbing Christian , Jandt Klaus D. , Tünnermann Andreas , Sierka Marek , Szeghalmi Adriana
Published: December 2019

PEALD of thin SiO2 films assisted by bias is a powerful technique to tailor their physical and chemical properties.
Trapping metallic particles using focused Bloch surface waves
Authors: Xiang Yifeng , Tang Xi , Fu Yanan , Lu Fenya , Kuai Yan , Min Changjun , Chen Junxue , Wang Pei , Lakowicz Joseph. R. , Yuan Xiaocong , Zhang Douguo
Published: December 2019

Trapping metallic particles using Bloch surface waves on all-dielectric multilayer structure.
Palladium catalyzed synthesis of benzannulated steroid spiroketals
Authors: Mayorquín-Torres Martha C. , González-Orozco Juan Carlos , Flores-Álamo Marcos , Camacho-Arroyo Ignacio , Iglesias-Arteaga Martín A.
Published: December 2019

Nine cytotoxic [5/7] and [6/6] benzannulated steroid spiroketals were synthesized by palladium catalyzed spiroketalization of 5α and 5β-alkynediols derived from testosterone, diosgenin and cholesterol.
Ag-Catalyzed minisci C–H difluoromethylarylation of N-heteroarenes
Authors: Xie Xiaojuan , Zhang Yifang , Hao Jian , Wan Wen
Published: December 2019

A mild silver-catalyzed decarboxylative C–H difluoromethylarylation of electron-deficient N-heteroarenes.
Iodine(iii) promoted ring-rearrangement reaction of 1-arylamino-2-oxocyclopentane-1-carbonitriles to synthesize N-aryl-δ-valerolactams
Authors: Bhattacherjee Dhananjay , Shaifali  , Kumar Ajay , Sharma Ajay , Purohit Rituraj , Das Pralay
Published: December 2019

Environmentally benign hypervalent iodine(iii) has been utilised selectively for carbocyclic to heterocyclic ring transformation under various electronic conditions with detailed structural and mechanistic investigation.
Fabrication of uniform urchin-like N-doped NiCo2O4@C hollow nanostructures for high performance supercapacitors
Authors: Hu XiaoYu , Huang MiaoFeng , Meng XianHe , Ju Xin
Published: December 2019

Procedure for fabricating N-doped NiCo2O4@C hollow nanostructures.
Er3+/Yb3+ co-doped nanocrystals modified with 6-aminocaproic acid for temperature sensing in biomedicine
Authors: Wu Bing , Zhao Lijuan , Wang Ying , Dong Haotian , Yu Hua
Published: December 2019

We report β-PbF2:Er3+/Yb3+ nanocrystals (NCs) modified with 6-aminocaproic acid (6AA) via wet chemical etching of glass ceramics (GCs).
Correction: One-pot syntheses of irida-polycyclic aromatic hydrocarbons
Authors: Hu Yu Xuan , Zhang Jing , Wang Xiaoyan , Lu Zhengyu , Zhang Fangfang , Yang Xiaofei , Ma Zhihua , Yin Jun , Xia Haiping , Liu Sheng Hua
Published: December 2019

Correction for ‘One-pot syntheses of irida-polycyclic aromatic hydrocarbons’ by Yu Xuan Hu et al., Chem. Sci., 2019, 10, 10894–10899.
Lipid-anchor display on peptoid nanosheets via co-assembly for multivalent pathogen recognition
Authors: Kim Jae Hong , Grzincic Elissa M. , Yun Lisa , Spencer Ryan K. , Kline Mark A. , Zuckermann Ronald N.
Published: December 2019

A facile route to a diversity of functionalized two-dimensional bionanomaterials was developed based on the aqueous co-assembly of lipidated small molecules and nanosheet-forming peptoids.
Archaeal cyclopentane fragment in a surfactant's hydrophobic tail decreases the Krafft point
Authors: Mineev Konstantin S. , Volynsky Pavel E. , Galimzyanov Timur R. , Tretiakova Daria S. , Bobrov Mikhail Y. , Alekseeva Anna S. , Boldyrev Ivan A.
Published: December 2019

Cyclopentane fragment in the hydrophobic tail expands operational range of the surfactant into the low-temperature region.
A novel supramolecular polymer gel-based long-alkyl-chain-functionalized coumarin acylhydrazone for the sequential detection and separation of toxic ions
Authors: Hu Jing-Han , Yin Zhi-Yuan , Gui Kai , Fu Qing-Qing , Yao Ying , Fu Xu-Mei , Liu Hui-Xin
Published: December 2019

A novel long-alkyl-chains functionalized supramolecular polymer gel OGC was constructed, which shows successive recognition of CN− and S2− to Fe3+ and Ag+. So, our study provided a new methods to detect deferent toxic ions via single chemosensor.
A hydrophobic titanium doped zirconium-based metal organic framework for photocatalytic hydrogen peroxide production in a two-phase system
Authors: Chen Xiaolang , Kuwahara Yasutaka , Mori Kohsuke , Louis Catherine , Yamashita Hiromi
Published: December 2019

A hydrophobic Ti doped Zr-based MOF was synthesized and used for photocatalytic H2O2 production in a two-phase system (water/benzyl alcohol).
Promoting the electroreduction of CO2 with oxygen vacancies on a plasma-activated SnOx/carbon foam monolithic electrode
Authors: Li Hongqiang , Xiao Nan , Wang Yuwei , Liu Chang , Zhang Shengji , Zhang Huihui , Bai Jinpeng , Xiao Jian , Li Chen , Guo Zhen , Zhao Shijia , Qiu Jieshan
Published: December 2019

A defect engineering strategy is proposed to synthesize carbon foam supported oxygen vacancy-enriched SnOx nanosheets as a promising monolithic electrode for electrocatalytic reduction of CO2 to formate with high activity and selectivity.
Covalent grafting of p-phenylenediamine molecules onto a “bubble-like” carbon surface for high performance asymmetric supercapacitors
Authors: Huangfu Chao , Liu Zheng , Zhou Qihang , Wang Lin , Wei Tong , Qiu Zhipeng , Zhang Su , Fan Zhuangjun
Published: December 2019

A simple but efficient template carbonization method was prepared to covalently graft p-phenylenediamine molecule onto hollow “bubble-like” carbon spheres (PPD–BC) surface as the negative electrode for high performance asymmetric supercapacitors.
Quinacridone-pyridine dicarboxylic acid based donor–acceptor supramolecular nanobelts for significantly enhanced photocatalytic hydrogen production
Authors: Xu Mengyu , Kong Kangyi , Ding Haoran , Chu Yanmeng , Zhang Shicong , Yu Fengtao , Ye Haonan , Hu Yue , Hua Jianli
Published: December 2019

Self-assembled nanobelt photocatalysts with quinacridone containing different alkyl chains as donor and pyridine dicarboxylic acid as acceptor were firstly developed for H2 evolution. SQAP-C4 without cocatalyst of Pt exhibited HER of 656 μmol h−1 g−1.
Role of excess tellurium on the electrical and thermal properties in Te-doped paracostibite
Authors: Guélou G. , Failamani F. , Sauerschnig P. , Waybright J. , Suzuta K. , Mori T.
Published: December 2019

The effect of excess Te in the preparation of synthetic mineral paracostibite, CoSbS, was investigated in an attempt to produce a nano–micro-porous architecture.
Interface modification of sputtered NiOx as the hole-transporting layer for efficient inverted planar perovskite solar cells
Authors: Zheng Xiaolu , Song Zhaoning , Chen Zhiliang , Bista Sandip Singh , Gui Pengbin , Shrestha Niraj , Chen Cong , Li Chongwen , Yin Xinxing , Awni Rasha A. , Lei Hongwei , Tao Chen , Ellingson Randy J. , Yan Yanfa , Fang Guojia
Published: December 2019

An appropriately combined triple interface modification, i.e., post-annealing, O2-plasma, and KCl treatments, is employed to ameliorate the optoelectronic properties of sputtered NiOx films and achieve better device performance.
Superhelices with tunable twisting power directed from supramolecular pairing of focal asymmetry in achiral dendron-jacketed block copolymers
Authors: Lin I-Ming , Chou Che-Min , Li Ming-Chia , Guo Rong-Hao , Lee Cheng-Kuang , Li Han-Jung , Chiang Yeo-Wan , Lin Yi-Hung , Lee Yao-Chang , Su Chun-Jen , Jeng U-Ser , Chuang Wei-Tsung
Published: December 2019

Focal asymmetry was introduced into achiral dendron-jacketed block copolymers for the formation of hierarchical helical structures via transfer of helical twisting from a primary molecular level to a quaternary structure.
Bismuth halide perovskite derivatives for direct X-ray detection
Authors: Yao Li , Niu Guangda , Yin Lixiao , Du Xinyuan , Lin Yongchao , Den Xingyuan , Zhang Jiangwei , Tang Jiang
Published: December 2019

A one-dimensional bismuth-based perovskite derivative (DMEDA)BiI5 was investigated for X-ray photoelectric detection.
Extrinsicvs.intrinsic luminescence and their interplay with spin crossover in 3D Hofmann-type coordination polymers
Authors: Meneses-Sánchez Manuel , Piñeiro-López Lucía , Delgado Teresa , Bartual-Murgui Carlos , Muñoz M. Carmen , Chakraborty Pradip , Real José Antonio
Published: December 2019

Two series of coordination polymers have been synthesized to exhibit extrinsic or intrinsic luminescence modulated by spin crossover behavior. This study provides further insight into the features governing the synergy between both properties.
Expanding Communication Modalities and Functions for Preschoolers With Autism Spectrum Disorder: Secondary Analysis of a Peer Partner Speech-Generating Device Intervention
Authors: Bourque Kathy S. , Goldstein Howard
Published: December 2019

Purpose

This study reports a secondary analysis of the nature of communicative functions and modalities used in initiations and responses of minimally verbal preschoolers with severe autism spectrum disorder (ASD) from a previously published study (
Thiemann-Bourque, Feldmiller, Hoffman, & Johner, 2018
). This analysis focused on the final cohort (
n =
6) from a group design study (
N
= 45) that examined a peer mediation and speech-generating device (SGD) intervention compared to an SGD-only condition.

Method

After teaching peers to use an iPad as an SGD within a modified stay-play-talk approach, school staff implemented SGD instruction in child–peer dyads during typical preschool activities. To investigate individual differences among children who demonstrated increased communication acts in the peer + SGD condition, changes in reciprocity, modalities used, and communicative functions were examined using a multiple-baseline design across children. Fidelity of implementation and social validity data were also collected.

Results

Six children with ASD and their peers demonstrated more balanced reciprocity, with individual differences in how and why children communicated during exchanges. That is, all children with ASD increased in SGD use as their primary communication mode; 3 children used different modalities including more speech, and 3 children used primarily gestures and SGD. The most frequent function expressed was requests for objects. More modest increases were observed in comments and requests for actions, with negligible changes in gaining attention. Social validity reports by naïve judges reflected clear improvements in communication interactions.

Conclusion

Findings are promising for a preschool SGD intervention that can expand children's modalities and communicative functions to engage in balanced exchanges with peer partners.

Supplemental Material

https://doi.org/10.23641/asha.11374203
A Tutorial for Implementing Strategic Questioning in the Clinical Teaching Environment
Authors: Dalessio (Procaccini) Samantha J.
Published: December 2019

Purpose

The implementation of strategic questioning within the clinical teaching context has recently gained appeal among clinical educators as a method for stimulating critical thinking and other higher order thinking skills. This article will (a) address evidence for the use of strategic questioning approaches in the clinical teaching environment, (b) examine some of the complexities associated with effectively selecting and implementing questioning types, and (c) discuss the potential significance that supervisory training and self-assessment may have on effective application of strategic questioning.

Conclusion

Strategic questioning can be a highly valuable teaching methodology within the clinical teaching context. Current available external evidence, albeit limited, provides some insight into the complexities involved with effectively implementing strategic questioning methods. Further research is needed to explore the efficacy and feasibility of specific strategic questioning approaches within the scope of communication sciences and disorders.
KT and azimuth sub‐region deramp‐based high‐squint SAR imaging algorithm mounted on manoeuvring platforms
Authors: Li Gen , Ma Yanheng , Shi Lin , Hou Jianqiang
Published: December 2019

Owing to the existence of high‐order motion parameters and vertical velocity, severe range–azimuth coupling and two‐dimensional spatial variability of the imaging parameters degrade the image quality of high‐squint synthetic aperture radar (SAR) mounted on manoeuvring platforms. To accommodate these issues, a novel sub‐aperture SAR imaging algorithm based on keystone transform (KT) and azimuth sub‐region deramp is proposed. In the range dimension processing, a correction function is constructed based on the scene centre to realise non‐spatial‐variant range cell migration (RCM) correction and range–azimuth decoupling, and then the residual spatial‐variant RCM is removed by the KT. In the azimuth dimension processing, considering the impact of the range distortion on the azimuth modulated phase, accurate analytical formula of the signal in the azimuth time domain is deduced. On this basis, a fast azimuth compression method based on the azimuth sub‐region deramp is proposed, and the theoretical effective imaging area is analysed. The theoretical analysis and the simulations show that the proposed imaging algorithm has high computational efficiency and can effectively expand the imaging area of high‐squint SAR mounted on manoeuvring platforms.
Time difference of arrival localisation exploiting all available time differences
Authors: Naus Rik , Toh Yohan
Published: December 2019

Time difference of arrival geolocation is re‐analysed exploiting all available time differences, though sticking to closed‐form algorithms based on the minimum number of time differences. The additional information is statistically utilised in a sound way. Error estimates for the resulting position and the Cramer‐Rao lower bound are derived. The two‐dimensional case has explicitly been demonstrated for three and four sensors using three and six‐time differences. Results are confirmed by Monte Carlo simulations, indeed showing improved accuracy. A comparison with an existing localisation method is presented as well. The three‐dimensional localisation scenario can be analysed analogously.
Robust in‐field estimation and calibration approach for strapdown inertial navigation systems accelerometers bias acting on the vertical channel
Authors: Rahgoshay Mohammad Ali , Karimaghaie Paknoosh
Published: December 2019

This paper investigates an effective approach to estimate vertical channel accelerometer bias in strapdown inertial navigation system. At first, a novel inertial frame based mechanisation algorithm for strapdown inertial navigation system is introduced and its equations are derived. The difference between the outputs of the proposed mechanisation and a special type of the local‐level frame mechanisation is considered as an error signal. Through this approach, the vertical accelerometer bias estimation procedure is converted to a control problem. By designing an appropriate optimal controller, the error signal is minimised and the vertical accelerometer bias is accurately estimated. The proposed approach attains a more robust and accurate estimation of the vertical accelerometer bias compared to the conventional Kalman filter based self‐alignment and calibration method. Two different scenarios are conducted to assess the effectiveness of the proposed approach. In the first scenario, the IMU is stationary with respect to the Earth and the second scenario evaluates the condition where IMU experiences undesirable dynamic motions. The experimental test results illustrate that unlike the conventional Kalman filter based self‐alignment and calibration method, the proposed approach obtains a robust estimation in the presence of undesirable dynamic motion as well as the static condition.
Spectroscopy and polarimetry of the gravitationally lensed quasar SDSS J1004+4112 with the 6m SAO RAS telescope
Authors: Popović L. Č. , Afanasiev V. L. , Moiseev A. , Smirnova A. , Simić S. , Savić Dj. , Mediavilla E. G. , Fian C.
Published: December 2019

Context. We present new spectroscopic and polarimetric observations of the gravitational lens SDSS J1004+4112 taken with the 6 m telescope of the Special Astrophysical Observatory (Russia).

Aims. In order to explain the variability that is observed only in the blue wing of the C IV emission line, corresponding to image A, we analyze the spectroscopy and polarimetry of the four images of the lensed system.

Methods. Spectra of the four images were taken in 2007, 2008, and 2018, and polarization was measured in the period 2014–2017. Additionally, we modeled the microlensing effect in the polarized light, assuming that the source of polarization is the equatorial scattering in the inner part of the torus.

Results. We find that a blue enhancement in the C IV line wings affects component A in all three epochs. We also find that the UV continuum of component D was amplified in the period 2007–2008, and that the red wings of CIII] and C IV appear brighter in D than in the other three components. We report significant changes in the polarization parameters of image D, which can be explained by microlensing. Our simulations of microlensing of an equatorial scattering region in the dusty torus can qualitatively explain the observed changes in the polarization degree and angle of image D. We do not detect significant variability in the polarization parameters of the other images (A, B, and C), although the averaged values of the polarization degree and angle are different for the different images.

Conclusions. Microlensing of a broad line region model including a compact outflowing component can qualitatively explain the C IV blue wing enhancement (and variation) in component A. However, to confirmed this hypothesis, we need additional spectroscopic observation in future.
Fragmentation and isomerization of polycyclic aromatic hydrocarbons in the interstellar medium: Coronene as a case study
Authors: Chen Tao , Luo Yi , Li Aigen
Published: December 2019

Aims. Due to the limitations of current computational technology, the fragmentation and isomerization products of vibrationally-excited polycyclic aromatic hydrocarbon (PAH) molecules and their derivatives have been poorly studied. In this work, we investigate the intermediate products of PAHs and their derivatives as well as the gas-phase reactions relevant to the interstellar medium, with coronene as a case study.

Methods. Based on the semi-empirical method of PM3 as implemented in the CP2K program, molecular dynamics simulations were performed to model the major processes (e.g., vibrations, fragmentations, and isomerizations) of coronene and its derivatives (e.g., methylated coronene, hydrogenated coronene, dehydrogenated coronene, nitrogen-substituted coronene, and oxygen-substituted coronene) at temperatures of 3000 K and 4000 K.

Results. We find that the anharmonic effects are crucial for the simulation of vibrational excitation. For the molecules studied here, H2, CO, HCN, and CH2 are the major fragments. Following the dissociation of these small units, most of the molecules could maintain their ring structures, but a few molecules would completely break into carbon chains. The transformation from a hexagon to a pentagon or a heptagon may occur and the heteroatomic substitutions (e.g., N- or O-substitutions) would facilitate the transformation.
The influence of NLTE effects in Fe I lines on an inverted atmosphere
Authors: Smitha H. N. , Holzreuter R. , van Noort M. , Solanki S. K.
Published: December 2019

Context. Ultraviolet overionisation of iron atoms in the solar atmosphere leads to deviations in their level populations based on Saha-Boltzmann statistics. This causes their line profiles to form in non-local thermodynamic equilibrium (NLTE) conditions. When inverting such profiles to determine atmospheric parameters, the NLTE effects are often neglected and other quantities are tweaked to compensate for deviations from the LTE.

Aims. We investigate how the routinely employed LTE inversion of iron lines formed in NLTE underestimates or overestimates atmospheric quantities, such as temperature (T), line-of-sight velocity (vLOS), magnetic field strength (B), and inclination (γ) while the earlier papers have focused mainly on T. Our findings has wide-ranging consequences since many results derived in solar physics are based on inversions of Fe I lines carried out in LTE.

Methods. We synthesized the Stokes profiles of Fe I 6301.5 Å and 6302.5 Å lines in both LTE and NLTE using a snapshot of a 3D magnetohydrodynamic simulation. The profiles were then inverted in LTE. We considered the atmosphere inferred from the inversion of LTE profiles as the fiducial model and compared it to the atmosphere resulting from the inversion of NLTE profiles. The observed differences have been attributed to NLTE effects.

Results. Neglecting the NLTE effects introduces errors in the inverted atmosphere. While the errors in T can go up to 13%, in vLOS and B, the errors can go as high as 50% or above. We find these errors to be present at all three inversion nodes. Importantly, they survive degradation from the spatial averaging of the profiles.

Conclusions. We provide an overview of how neglecting NLTE effects influences the values of T, vLOS, B, and γ that are determined by inverting the Fe I 6300 Å line pair, as observed, for example, by Hinode/SOT/SP. Errors are found at the sites of granules, intergranular lanes, magnetic elements, and basically in every region susceptible to NLTE effects. For an accurate determination of the atmospheric quantities and their stratification, it is, therefore, important to take the NLTE effects into account.
Coronal energy release by MHD avalanches: Heating mechanisms
Authors: Reid J. , Cargill P. J. , Hood A. W. , Parnell C. E. , Arber T. D.
Published: December 2019

The plasma heating associated with an avalanche involving three twisted magnetic threads within a coronal loop is investigated using three-dimensional magnetohydrodynamic simulations. The avalanche is triggered by the kink instability of one thread, with the others being engulfed as a consequence. The heating as a function of both time and location along the strands is evaluated. It is shown to be bursty at all times but to have no preferred spatial location. While there appears to be a level of “background” heating, this is shown to be comprised of individual, small heating events. A comparison between viscous and resistive (Ohmic) heating demonstrates that the strongest heating events are largely associated with the Ohmic heating that arises when the current exceeds a critical value. Viscous heating is largely (but not entirely) associated with smaller events. Ohmic heating dominates viscous heating only at the time of the initial kink instability. It is also demonstrated that a variety of viscous models lead to similar heating rates, suggesting that the system adjusts to dissipate the same amount of energy.
Excitation of decay-less transverse oscillations of coronal loops by random motions
Authors: Afanasyev A. N. , Van Doorsselaere T. , Nakariakov V. M.
Published: December 2019

Context. The relatively large-amplitude decaying regime of transverse oscillations of coronal loops has been known for two decades and has been interpreted in terms of magnetohydrodynamic kink modes of cylindrical plasma waveguides. In this regime oscillations decay in several cycles. Recent observational analysis has revealed so-called decay-less, small-amplitude oscillations, in which a multi-harmonic structure has been detected. Several models have been proposed to explain these oscillations. In particular, decay-less oscillations have been described in terms of standing kink waves driven with continuous mono-periodic motions of loop footpoints, in terms of a simple oscillator model of forced oscillations due to harmonic external force, and as a self-oscillatory process due to the interaction of a loop with quasi-steady flows. However, an alternative mechanism is needed to explain the simultaneous excitation of several longitudinal harmonics of the oscillation.

Aims. We study the mechanism of random excitation of decay-less transverse oscillations of coronal loops.

Methods. With a spatially one-dimensional and time-dependent analytical model taking into account effects of the wave damping and kink speed variation along the loop, we considered transverse loop oscillations driven by random motions of footpoints. The footpoint motions were modelled by broad-band coloured noise.

Results. We found the excitation of loop eigenmodes and analysed their frequency ratios as well as the spatial structure of the oscillations along the loop. The obtained results successfully reproduce the observed properties of decay-less oscillations. In particular, excitation of eigenmodes of a loop as a resonator can explain the observed quasi-monochromatic nature of decay-less oscillations and the generation of multiple harmonics detected recently.

Conclusions. We propose a mechanism that can interpret decay-less transverse oscillations of coronal loops in terms of kink waves randomly driven at the loop footpoints.
Mathematical modelling of atherosclerosis
Authors: El Khatib N. , Kafi O. , Sequeira A. , Simakov S. , Vassilevski Yu. , Volpert V.
Published: December 2019

The review presents the state of the art in the atherosclerosis modelling. It begins with the biological introduction describing the mechanisms of chronic inflammation of artery walls characterizing the development of atherosclerosis. In particular, we present in more detail models describing this chronic inflammation as a reaction-diffusion wave with regimes of propagation depending on the level of cholesterol (LDL) and models of rolling monocytes initializing the inflammation. Further development of this disease results in the formation of atherosclerotic plaque, vessel remodelling and possible plaque rupture due its interaction with blood flow. We review plaque-flow interaction models as well as reduced models (0D and 1D) of blood flow in atherosclerotic vasculature.