bluuebunny/crossref_metadata_2025 huggingface dataset:
Integrin-specific hydrogels for growth factor-free vasculogenesis
Authors: Moreira Helena R. , Rodrigues Daniel B. , Freitas-Ribeiro Sara , da Silva Lucília P. , da S. Morais Alain , Jarnalo Mariana , Horta Ricardo , Reis Rui L. , Pirraco Rogério P. , Marques Alexandra P.
Published: September 2022

Integrin-binding biomaterials have been extensively evaluated for their capacity to enable de novo formation of capillary-like structures/vessels, ultimately supporting neovascularization in vivo. Yet, the role of integrins as vascular initiators in engineered materials is still not well understood. Here, we show that αvβ3 integrin-specific 3D matrices were able to retain PECAM1+ cells from the stromal vascular fraction (SVF) of adipose tissue, triggering vasculogenesis in vitro in the absence of extrinsic growth factors. Our results suggest that αvβ3-RGD-driven signaling in the formation of capillary-like structures prevents the activation of the caspase 8 pathway and activates the FAK/paxillin pathway, both responsible for endothelial cells (ECs) survival and migration. We also show that prevascularized αvβ3 integrin-specific constructs inosculate with the host vascular system fostering in vivo neovascularization. Overall, this work demonstrates the ability of the biomaterial to trigger vasculogenesis in an integrin-specific manner, by activating essential pathways for EC survival and migration within a self-regulatory growth factor microenvironment. This strategy represents an improvement to current vascularization routes for Tissue Engineering constructs, potentially enhancing their clinical applicability.
Targeting and ultrabroad insight into molecular basis of Resistance-nodulation-cell division efflux pumps
Authors: Seyedhosseini Ghaheh Hooria , Damavandi Mohammad Sadegh , Sadeghi Parisa , Massah Ahmad Reza , Asl Taravat Hamidi , Salari-Jazi Azhar , Hejazi Seyed Hossein
Published: September 2022

Resistance-nodulation-cell devision (RND) efflux pump variants have attracted a great deal of attention for efflux of many antibiotic classes, which leads to multidrug-resistant bacteria. The present study aimed to discover the interaction between the RND efflux pumps and antibiotics, find the conserved and hot spot residues, and use this information to target the most frequent RND efflux pumps. Protein sequence and 3D conformational alignments, pharmacophore modeling, molecular docking, and molecular dynamics simulation were used in the first level for discovering the function of the residues in interaction with antibiotics. In the second level, pharmacophore-based screening, structural-based screening, multistep docking, GRID MIF, pharmacokinetic modeling, fragment molecular orbital, and MD simulation were utilized alongside the former level information to find the most proper inhibitors. Five conserved residues, containing Ala209, Tyr404, Leu415, Asp416, and Ala417, as well as their counterparts in other OMPs were evaluated as the crucial conserved residues. MD simulation confirmed that a number of these residues had a key role in the performance of the efflux antibiotics; therefore, some of them were hot spot residues. Fourteen ligands were selected, four of which interacted with all the crucial conserved residues. NPC100251 was the fittest OMP inhibitor after pharmacokinetic computations. The second-level MD simulation and FMO supported the efficacy of the NPC100251. It was exhibited that perhaps OMPs worked as the intelligent and programable protein. NPC100251 was the strongest OMPs inhibitor, and may be a potential therapeutic candidate for MDR infections.
The reliability, validity and usefulness of the 30–15 intermittent fitness test for cardiorespiratory fitness assessment in military personnel
Authors: Paravlic Armin H. , Simunic Bostjan , Pisot Rado , Rauter Samo , Stuhec Stanko , Vodicar Janez
Published: September 2022

The objectives of this study were to investigate the reliability, validity, and usefulness of the 30–15 intermittent fitness test (30–15IFT) in soldiers. The 34 infantry members of the Slovenian armed forces were recruited as participants. Participants performed the continuous incremental treadmill test (TR), a 2-mile run (2MR) test, and two 30–15IFT tests. Additionally, participants were divided into a highest-scoring group (HSG) and a lowest-scoring group (LSG) based on their scores on the Army Physical Fitness Test. A very high reliability ratings were observed for 30–15IFT measures, as follows: end-running speed (ERS) ERSIFT (ICC = 0.971), maximal heart rate (HRmax) HRmaxIFT (IC = 0.960), and maximal relative oxygen consumption (VO2max) VO2max-IFT (ICC = 0.975). Although 30–15IFT measures demonstrated high correlations (r = 0.695–0.930) to the same measures of TR test, ERS, HRmax and VO2max were higher in the 30–15IFT (p > 0.05). Furthermore, ERSIFT and predicted VO2maxIFT were higher in HSG compared to LSG, whereas HRmax did not differ. The results of this study show that the 30–15IFT test is a reliable, valid and useful tool for assessing cardiorespiratory fitness in the armed forces. Moreover, the ERS and predicted VO2max values derived from the 30–15IFT could be considered more sensitive markers of combat readiness than the parameters derived from the TR and 2MR tests.

Trial registration number: NCT05218798.
Predictors of health-related quality of life after coronary artery bypass graft surgery
Authors: Kim Hwasoon , Bae Sun Hyoung , Lim Sang-Hyun , Park Jin-Hee
Published: September 2022

Health-related quality of life (HRQOL) is a multifactorial concept in assessing physical and mental health. This study was performed to evaluate the HRQOL of patients undergoing coronary artery bypass graft (CABG) surgery and the predictors of HRQOL in patients until 1 year after surgery. This cross-sectional study included 110 consecutive patients who underwent elective CABG in a medical center in South Korea. The Short-Form Health Survey, cardiac symptom survey, cardiac self-efficacy, and the Interpersonal Support Evaluation List-12 were used to measure the HRQOL, symptom experience, self-efficacy, and social support, respectively. The regression model explained 42% of the variance in the participants' physical HRQOL. The predictors of the physical HRQOL include the presence of a spouse, post-CABG duration, symptom experience, and self-efficacy. The regression model explained 36% of the variance in the participants' mental HRQOL. The predictors of the mental HRQOL included perceived health status, self-efficacy, and social support. The predictive factors for HRQOL after CABG were the presence of a spouse, post-CABG duration, symptom experience, self-efficacy, and social support. Furthermore, a suitable program and nursing interventions could be implemented to improve the HRQOL of post-CABG patients.
Prophylactic administration of miR-451 inhibitor decreases osteoarthritis severity in rats
Authors: Scott Kayla M. , Cohen D. Joshua , Nielson Dane W. , Kim Gloria , Olson Lucas C. , McClure Michael J. , Grinstaff Mark W. , Boyan Barbara D. , Schwartz Zvi
Published: September 2022

Transfection of chondrocytes with microRNA-451(miR-451), present in growth zone cartilage of the growth plate, upregulates production of enzymes association with extracellular matrix degradation. miR-451 is also present in articular cartilage and exacerbates IL-1β effects in articular chondrocytes. Moreover, when osteoarthritis (OA) was induced in Sprague Dawley rats via bilateral anterior cruciate ligament transection (ACLT), miR-451 expression was increased in OA cartilage compared to control, suggesting its inhibition might be used to prevent or treat OA. To examine the prophylactic and therapeutic potential of inhibiting miR-451, we evaluated treatment with miR-451 power inhibitor (451-PI) at the onset of joint trauma and treatment after OA had developed. The prophylactic animal cohort received twice-weekly intra-articular injections of either 451-PI or a negative control (NC-PI) beginning on post-surgical day 3. OA was allowed to develop for 24 days in the therapeutic cohort before beginning injections. All rats were killed on day 45. Micro-CT, histomorphometrics, OARSI scoring, and muscle force testing were performed on samples. 451-PI mitigated OA progression compared to NC-PI limbs in the prophylactic cohort based on histomorphometric analysis and OARSI scoring, but no differences were detected by micro-CT. 451-PI treatment beginning 24 days post-surgery was not able to reduce OA severity. Prophylactic administration of 451-PI mitigates OA progression in a post-trauma ACLT rat model supporting its potential to prevent OA development following an ACLT injury clinically.
MHD Casson carbon nanotube flow with mass and heat transfer under thermosolutal Marangoni convection in a porous medium: analytical solution
Authors: Vishalakshi A. B. , Mahabaleshwar U. S. , Hatami M.
Published: September 2022

Current work portrays the flow of Marangoni convection Magneto hydrodynamics Casson fluid with carbon nanotubes under the effect of transpiration and radiation. The carbon nanotube particles namely water-single wall carbon nanotubes are inserted in the fluid to enhance better thermal efficiency. This type of flow problems is applicable for real life situations such as drying of silicon wafers, glues, crystal growth and heat exchangers and so on. The ordinary differential equations (ODEs) form of the result is yield to convert partial differential equations of the given equation by using similarity variables. Then this resulting ODEs are solved analytically, firstly using momentum equation to get solution domain and then by using this domain the energy equation solved to get the temperature profile in terms of Laguerre polynomial. Additionally, mass transpiration is also solved to get the concentration profile in terms of Laguerre polynomial. By using the different controlling parameters, the results can be discussed. And the effect of this parameters are discussed by using graphical arrangements. The newness of the present work is to explain the physically flow problem on the basis of chemically radiative thermosolutal Marangoni convective fluid.
Deep leaning-based ultra-fast stair detection
Authors: Wang Chen , Pei Zhongcai , Qiu Shuang , Tang Zhiyong
Published: September 2022

Staircases are some of the most common building structures in urban environments. Stair detection is an important task for various applications, including the environmental perception of exoskeleton robots, humanoid robots, and rescue robots and the navigation of visually impaired people. Most existing stair detection algorithms have difficulty dealing with the diversity of stair structure materials, extreme light and serious occlusion. Inspired by human perception, we propose an end-to-end method based on deep learning. Specifically, we treat the process of stair line detection as a multitask involving coarse-grained semantic segmentation and object detection. The input images are divided into cells, and a simple neural network is used to judge whether each cell contains stair lines. For cells containing stair lines, the locations of the stair lines relative to each cell are regressed. Extensive experiments on our dataset show that our method can achieve 81.49$$\%$$
%
accuracy, 81.91$$\%$$
%
recall and 12.48 ms runtime, and our method has higher performance in terms of both speed and accuracy than previous methods. A lightweight version can even achieve 300+ frames per second with the same resolution.
Phospholipid synthesis inside phospholipid membrane vesicles
Authors: Eto Sumie , Matsumura Rumie , Shimane Yasuhiro , Fujimi Mai , Berhanu Samuel , Kasama Takeshi , Kuruma Yutetsu
Published: September 2022

Construction of living artificial cells from genes and molecules can expand our understanding of life system and establish a new aspect of bioengineering. However, growth and division of cell membrane that are basis of cell proliferation are still difficult to reconstruct because a high-yielding phospholipid synthesis system has not been established. Here, we developed a cell-free phospholipid synthesis system that combines fatty acid synthesis and cell-free gene expression system synthesizing acyltransferases. The synthesized fatty acids were sequentially converted into phosphatidic acids by the cell-free synthesized acyltransferases. Because the system can avoid the accumulation of intermediates inhibiting lipid synthesis, sub-millimolar phospholipids could be synthesized within a single reaction mixture. We also performed phospholipid synthesis inside phospholipid membrane vesicles, which encapsulated all the components, and showed the phospholipids localized onto the mother membrane. Our approach would be a platform for the construction of self-reproducing artificial cells since the membrane can grow sustainably.
Weather stressors correlate with Escherichia coli and Salmonella enterica persister formation rates in the phyllosphere: a mathematical modeling study
Authors: Brandl Maria T , Ivanek Renata , Zekaj Nerion , Belias Alexandra , Wiedmann Martin , Suslow Trevor V , Allende Ana , Munther Daniel S
Published: September 2022

Enteric pathogens can enter a persister state in which they survive exposure to antibiotics and physicochemical stresses. Subpopulations of such phenotypic dormant variants have been detected in vivo and in planta in the laboratory, but their formation in the natural environment remains largely unexplored. We applied a mathematical model predicting the switch rate to persister cell in the phyllosphere to identify weather-related stressors associated with E. coli and S. enterica persister formation on plants based on their population dynamics in published field studies from the USA and Spain. Model outputs accurately depicted the bi-phasic decay of bacterial population sizes measured in the lettuce and spinach phyllosphere in these studies. Predicted E. coli persister switch rate on leaves was positively and negatively correlated with solar radiation intensity and wind velocity, respectively. Likewise, predicted S. enterica persister switch rate correlated positively with solar radiation intensity; however, a negative correlation was observed with air temperature, relative humidity, and dew point, factors involved in water deposition onto the phylloplane. These findings suggest that specific environmental factors may enrich for dormant bacterial cells on plants. Our model quantifiably links persister cell subpopulations in the plant habitat with broader physical conditions, spanning processes at different granular scales.
Development of a new paper-based voltage step electrocoagulation technique and application to wine classification
Authors: Phichi Manoon , Chobpradit Pattraporn , Nhujak Thumnoon , Aeungmaitrepirom Wanlapa , Kulsing Chadin
Published: September 2022

A novel voltage step electrocoagulation (VSEC) technique with a cathode array system (CAS) was developed. The capability of VSEC was demonstrated for estimation of antioxidant properties in wine and for classification of 15 wine samples.
Fabrication of noble metal (Au, Ag, Pt)/polythiophene/reduced graphene oxide ternary nanocomposites for NH3gas sensing at room temperature
Authors: Su Pi-Guey , Tsai Meng-Shian , Lu Chia-Jung
Published: September 2022

The Au, Ag or Pt/PTh/rGO ternary nanocomposite films have the higher response to NH3because noble metals nanoparticles can exhibit favorable catalytic activity, and formed new electrical pathways, enabling the easy transfer of charge carriers.
Graphene oxide-mediated fluorescence turn-on GO-FAM-FRET aptasensor for detection of sterigmatocystin
Authors: Gade Pravin Savata , Sonkar Rutuja Murlidhar , Bhatt Praveena
Published: September 2022

A simple one-step graphene oxide mediated fluorescence turn-on GO-FAM-FRET aptasensor for detecting STC in food and feed matrices.
Dimethylacetamide-stabilized ruthenium nanoparticles for catalysing α-alkylations of amides with alcohols
Authors: Iguchi Honami , Katayama Nobuki , Suzuki Takeyuki , Fujihara Tetsuaki , Jing Yuan , Toyao Takashi , Maeno Zen , Shimizu Ken-ichi , Obora Yasushi
Published: September 2022

N,N-Dimethylacetamide-stabilized Ru nanoparticles combine the roles of substrate, solvent, and catalyst, and show high activity in the α-alkylation reactions of amides with alcohols.
Highly dispersed Ru clusters toward an efficient and durable hydrogen oxidation reaction
Authors: Meng Ge , Cao Huijie , Wei Tianran , Liu Qian , Fu Jiantao , Zhang Shusheng , Luo Jun , Liu Xijun
Published: September 2022

In this work, we report an efficient and durable Ru cluster catalyst toward the alkaline hydrogen oxidation reaction, which shows a remarkably high activity and good resistance to CO poisoning.
Formation of spin-polarized current in antiferromagnetic polymer spintronic field-effect transistors
Authors: Sun Shih-Jye , Menšík Miroslav , Ganzorig Chimed , Toman Petr , Pfleger Jiří
Published: September 2022

Gate-controlled spin-polarized current is formed intrinsically in a spintronic FET based on an antiferromagnetic polymer chain.
Iodine speciation in deep eutectic solvents
Authors: Hartley Jennifer M. , Scott Sean , Dilruba Zarfishan , Lucio Anthony J. , Bird Philip J. , Harris Robert C. , Jenkin Gawen R. T. , Abbott Andrew P.
Published: September 2022

Iodine speciation in deep eutectic solvents is affected by chloride activity, which is controlled by the hydrogen bond donor.
Relaxation processes in a single crystal of Co(NCS)2(4-methoxypyridine)2 spin chain
Authors: Foltyn Magdalena , Pinkowicz Dawid , Näther Christian , Rams Michał
Published: September 2022

Single chain relaxation in Co(NCS)2(4-methoxypyridine)2 proceeds with a single domain wall movement. The origin of the second process is unknown.
An insight into the sequestration of tetra and hexavalent actinides by tri ethoxysilyl-amino-propyl-3-oxa-glutaramic acid (SAPOGA) functionalized titania
Authors: Pahan Sumit , Sengupta Arijit , Khan P. N. , Ananthanarayanan A. , Ali Sk. Musharaf , Debnath A. K. , Vincent Tessy , Sugilal G.
Published: September 2022

Silyl-amino-propyl-3-oxa-glutaramic acid (SAPOGA) functionalized titania has been synthesized for highly efficient solid phase sequestration of thorium and uranyl ions from an aqueous acidic waste stream.
Recent advances in heterometallic clusters with f-block metal–metal bonds: synthesis, reactivity and applications
Authors: Fang Wei , Zhu Qin , Zhu Congqing
Published: September 2022

Recent advances in heterometallic clusters with f-block metal–metal bonds were introduced from the standpoint of synthetic methods, and the corresponding reactivity and applications were also summarized.
Polymers showing intrinsic antimicrobial activity
Authors: Haktaniyan Meltem , Bradley Mark
Published: September 2022

This article covers the structures and mechanistic modes of action of intrinsic antimicrobial polymers against bacteria, viruses, or fungi including as surface coatings, for example on medical devices, or directly as antimicrobial agents.
A stable lanthanum hydroxamate metal–organic framework with radical character and electrical conductivity
Authors: Yan Yong , Zhang Ning-Ning , Fuhrmann Daniel , Merker Stefan , Krautscheid Harald
Published: September 2022

[La(ONDI)]Cl, a hydroxamate MOF, exhibits high framework stability in aqueous solution and in common solvents. By modifying the reducing environment of synthesis, the amount of NDI˙− radicals has been increased leading to higher electrical conductivity.
Revealing the electrochemical performance of a manganese phosphite/RGO hybrid in acidic media
Authors: Padhy Abhisek , Kumar Rahul , Behera J. N.
Published: September 2022

Mn-HPO/RGO hybrid synthesized through a hydrothermal route, delivers a specific capacitance of 770 F g−1 in the three electrode system. The fabricated device possesses an energy density of 34 W h kg−1 with an excellent durability for 12 000 cycles.
Polymorphism and solid solutions of trimethylammonium monocarboranes
Authors: Grinderslev Jakob B. , Skov Lasse N. , Sørensen Daniel R. , Kantor Innokenty , Jørgensen Mads R. V. , Jensen Torben R.
Published: September 2022

[NH(CH3)3][CB9H10] and the solid solution [NH(CH3)3][(CB8H9)0.26(CB9H10)0.66(CB11H12)0.08] exhibit polymorphism as a function of temperature. The weakly coordinating carboranes may play an important role as electrolytes for all-solid-state-batteries.
Design, luminescence properties and applications of Cr3+-doped ScTaO4: a broadband near-infrared phosphor
Authors: Wang Shan , Zhang Su , Liu Shuang , Han Songlin , Li Xiaodong , Wang Chaowei , Li Chengyu
Published: September 2022

A new broadband NIR phosphor, ScTaO4:Cr3+, has been synthesized, and the NIR pc-LED devices were prepared.
A high-rate and high-efficiency molten-salt sodium–oxygen battery
Authors: Zhu Yun Guang , Leverick Graham , Accogli Alessandra , Gordiz Kiarash , Zhang Yirui , Shao-Horn Yang
Published: September 2022

A molten-salt Na–O2 battery featuring a liquid Na negative electrode and Ni positive electrode was found to form Na2O2 on discharge, enabled by nitrate redox where NO3− is reduced to Na2O and NO2−, then reactions with O2 produce Na2O2 and reform NO3−.
Constructing novel hyper-crosslinked In2S3@HLZU-1 through molecular expansion for enhanced photocatalytic performance
Authors: Yang Huaizhi , Wan Yuqi , Cheng Qingrong , Zhou Hong , Pan Zhiquan
Published: September 2022

The strong interfacial interaction between In2S3 and HLZU-1 with large specific surface area was used for efficient photocatalytic degradation of TC and hydrogen production under visible light.
Hypoglycemic activity in vitro and vivo of a water-soluble polysaccharide from Astragalus membranaceus
Authors: Chen Xiaoxia , Chen Chun , Fu Xiong
Published: September 2022

The polysaccharide AMP as one main bioactive component of Astragalus membranaceus (Fisch.) Bunge was separated and characterized.
Thermokinetics of production of biochar from crop residues: an overview
Authors: Len Thomas , Bressi Viviana , Balu Alina M. , Kulik Tetiana , Korchuganova Olena , Palianytsia Borys , Espro Claudia , Luque Rafael
Published: September 2022

Thermokinetics of Biochar production.
Sol–gel synthesis of alumina gel@zeolite X nanocomposites for high performance water defluoridation: batch and column adsorption study
Authors: Chakraborty Adwitiya , Naskar Milan Kanti
Published: September 2022

Sol–gel synthesized alumina gel@zeolite X nanocomposites with a surface area of 257 m2g−1show high performance fluoride removal as studied in batch and column adsorption processes.
Water oxidation at low potential exploiting a nitroxide/oxoammonium ion redox couple as mediator
Authors: Barbon Antonio , Isse Abdirisak Ahmed , Gennaro Armando , Carmieli Raanan , Bilkis Itzhak , Weiner Lev
Published: September 2022

Chemical or electrochemical oxidation of a nitroxide radical leads to formation of an oxoammonium cation (OAC). OAC is able, in basic aqueous solution, of water oxidation with the formation of oxygen, while OAC reduces back to the initial radical.
Responsive and reactive layer-by-layer coatings for deriving functional interfaces
Authors: Parbat Dibyangana , Manna Uttam
Published: September 2022

In this review, some important designs of stimuli responsive and chemically reactive multilayer coatings were presented to display the inherent ability of such interfaces in associating different relevant, functional and bio-inspired properties.
Nano-sulfur confined in a 3D carbon nanotube/graphene network as a free-standing cathode for high-performance Li–S batteries
Authors: Wei Meng , Zhu Huiqin , Zhai Pengfei , An Longkun , Geng Hengyi , Xu Song , Zhang Tao
Published: September 2022

A free-standing nano-sulfur-based carbon nanotube/graphene (S/CNT/G) film with a conductive interlinked three-dimensional (3D) nanoarchitecture is fabricatedviaa facile solution-based method.
In situ grown hierarchical NiO nanosheet@nanowire arrays for high-performance electrochromic energy storage applications
Authors: Yao Shangzhi , Zhang Yong , Cai Jingyi , Hong Yong , Wang Yan , Cui Jiewu , Shu Xia , Liu Jiaqin , Tan Hark Hoe , Wu Yucheng
Published: September 2022

Hierarchical NiO nanosheet@nanowire arrays serve as a high-performance electrochromic energy storage material.
Two manganese chloride organic–inorganic hybrid compounds showing strong luminescence and switchable phase transition and dielectric anomaly
Authors: You Xiuli , Wang Lingyu , Peng Ziqin , Wei Zhenhong
Published: September 2022

Two organic–inorganic hybrid manganese halide perovskite compounds [Me3NNH2]MnCl3 and [(CH3)3NCH2CH2F]2MnCl4 exhibit switchable phase transition and dielectric anomaly, and also emit strong red and green luminescence.
Elucidation of a detection mechanism of a fluorescent sensor based on photo-induced electron transfer for water
Authors: Fumoto Takuma , Imato Keiichi , Ooyama Yousuke
Published: September 2022

We provide a direction in molecular design toward creating an effective photo-induced electron transfer-type fluorescent sensor for water based on a detection mechanism of anthracene-(aminomethyl)-4-cyanophenylboronic acid pinacol ester for water.
Synthesis, coordination behavior, and catalytic properties of dppf congeners with an inserted carbonyl moiety
Authors: Vosáhlo Petr , Císařová Ivana , Štěpnička Petr
Published: September 2022

Dppf-type ligands, desymmetrized by an inserted carbonyl group coordinate Pd(ii) and Pd(0). Among the air-stable Pd(0) complexes, the compound containing the least electron-donating ligand gives the best catalytic results in the Stille reaction.
Recent advances in the synthesis and properties of energetic plasticizers
Authors: Chen Fang , Wang Yi , Zhang Qinghua
Published: September 2022

This review summarizes the recent advances in new energetic plasticizers with different substituent groups and molecular frameworks.
Self-assembly behavior and sustained drug release properties of amphiphilic poly(amino acid)s
Authors: Hu Zhuang , Wang Jiwei , Han Siyu , Hu Jianshe , Reheman Aikebaier
Published: September 2022

In this study, a series of poly(amino acid)s materials with amphiphilic properties have been synthesized. The drug-loaded nanoparticles are formed with the model drug doxorubicin by physical embedding and chemical bonding.
Highly interface-dependent spin transport in an Fe–Mn(DBTAA)–Fe single molecule spintronic device
Authors: Yu Cuiju , Feng Qingqing , Li Xingxing , Yang Jinlong
Published: September 2022

Spin filtering in molecular junctions is unveiled to be highly dependent on interface configurations, where spin polarization is even reversible.
Unraveling the timescale of the structural photo-response within oriented metal–organic framework films
Authors: Klokic Sumea , Naumenko Denys , Marmiroli Benedetta , Carraro Francesco , Linares-Moreau Mercedes , Zilio Simone Dal , Birarda Giovanni , Kargl Rupert , Falcaro Paolo , Amenitsch Heinz
Published: September 2022

By using a structurally responsive and oriented DMOF-1-on-MOF film, we successfully fabricated the first photo-switchable crystalline MOF film that experiences crystal lattice deformations reversibly within seconds.
Lipid coated protein condensates as stable protocells with selective uptake abilities for biomolecules
Authors: Son Juyoung , Jung Yongwon
Published: September 2022

Lipid-coated protein condensates, which are formed via specific protein–lipid interactions, were stable against centrifugation but selectively permeable to external biomolecules.
The way to AI-controlled synthesis: how far do we need to go?
Authors: Wang Wei , Liu Yingwei , Wang Zheng , Hao Gefei , Song Baoan
Published: September 2022

It is still a long march for AI-controlled synthesis to enter into general laboratories. Flaws in the architecture of AI-controlled synthesis systems must be overcome.
Diffuse reflectance-based spectroscopic technique for real-time estimation of localized blood oxygenation parameters from human fingertips: a preliminary study
Authors: Kumar Ajay , Chellappan Kalaivani , Nasution Aulia , Pawar Dnyandeo , Patel Manoj Kumar , Kanawade Rajesh
Published: September 2022

Non-invasive and real-time measurement of localized blood oxygenation parameters such as reduced hemoglobin, oxyhemoglobin, and oxygen saturation are regularly required by emergency & rescue teams as well as by intensive care units (ICUs).
First evaluation of multifunctional poly(ionic liquid)s as novel strong bases in directional efficient valorization of lignin
Authors: Zhang Guoqiang , Liu Zhongqiu , Li Yinuo , Yu Yuanyuan , Liu Yujing , Ying Anguo
Published: September 2022

A novel multifunctional poly(ionic liquid)s with Brønsted–Lewis dibasic sites, well-defined mesoporous channels, and hydrophobicity show excellent catalytic performance with 21.99 wt% yield of lignin-based monocyclic aromatic compounds.
Single atom functionalization in vanadium dichalcogenide monolayers: towards enhanced electrocatalytic activity
Authors: Tomar Shalini , Sen Prasenjit , Chakraborty Sudip
Published: September 2022

Comparative theoretical analysis for the enhancement of HER, OER, and ORR activities on two dimensional (2D) pristine vanadium dichalcogenide (VS2, VSe2, and VTe2) layered structures.
Assembled cobalt phosphide nanoparticles on carbon nanofibers as a bifunctional catalyst for hydrogen evolution reaction and oxygen evolution reaction
Authors: Yu Meixin , Guo Xu , Chang Xin , Ma Xinzhi , Zhang Mingyi
Published: September 2022

CoP nanoparticles embedded in CNT-grafted carbon nanofibers exhibited both enhanced electrocatalytic activity and excellent long-term stability for HER and OER.
Quantifying the trade-off between stiffness and permeability in hydrogels
Authors: Gao Yiwei , Cho H. Jeremy
Published: September 2022

Hydrogels have a distinct trade-off between mechanical stiffness and water permeability due to the spacing of polymer strands.
A sandwich-like CoNiLDH@rGO@CoNi2S4 electrode enabling high mass loading and high areal capacitance for solid-state supercapacitors
Authors: Hu Jingjing , Sun Li , Xie Feng , Qu Yaru , Tan Hankun , Shi Xiancheng , Qian Jialong , Wang Ke , Zhang Yihe
Published: September 2022

Sandwich-like heterostructures containing graphene interlayers were designed to improve the mass load and areal specific capacitance.
Do Voice-Based Judgments of Socially Relevant Speaker Traits Differ Across Speech Types?
Authors: Groyecka-Bernard Agata , Pisanski Katarzyna , Frąckowiak Tomasz , Kobylarek Aleksander , Kupczyk Piotr , Oleszkiewicz Anna , Sabiniewicz Agnieszka , Wróbel Monika , Sorokowski Piotr
Published: September 2022

Purpose:

The human voice is a powerful and evolved social tool, with hundreds of studies showing that nonverbal vocal parameters robustly influence listeners' perceptions of socially meaningful speaker traits, ranging from perceived gender and age to attractiveness and trustworthiness. However, these studies have utilized a wide variety of voice stimuli to measure listeners' voice-based judgments of these traits. Here, in the largest scale study known to date, we test whether listeners judge the same unseen speakers differently depending on the complexity of the neutral speech stimulus, from single vowel sounds to a full paragraph.

Method:

In a playback experiment testing 2,618 listeners, we examine whether commonly studied voice-based judgments of attractiveness, trustworthiness, dominance, likability, femininity/masculinity, and health differ if listeners hear isolated vowels, a series of vowels, single words, single sentences (greeting), counting from 1 to 10, or a full paragraph recited aloud (Rainbow Passage), recorded from the same 208 men and women. Data were collected using a custom-designed interface in which vocalizers and traits were randomly assigned to raters.

Results:

Linear-mixed models show that the type of voice stimulus does indeed consistently affect listeners' judgments. Overall, ratings of attractiveness, trustworthiness, dominance, likability, health, masculinity among men, and femininity among women increase as speech duration increases. At the same time, speaker-level regression analyses show that interindividual differences in perceived speaker traits are largely preserved across voice stimuli, especially among those of a similar duration.

Conclusions:

Socially relevant perceptions of speakers are not wholly changed but rather moderated by the length of their speech. Indeed, the same vocalizer is perceived in a similar way regardless of which neutral statements they speak, with the caveat that longer utterances explain the most shared variance in listeners' judgments and elicit the highest ratings on all traits, possibly by providing additional nonverbal information to listeners.

Supplemental Material:

https://doi.org/10.23641/asha.21158890
Respiratory Responses to Two Voice Interventions for Parkinson's Disease
Authors: Richardson Kelly , Huber Jessica E. , Kiefer Brianna , Kane Caitlin , Snyder Sandy
Published: September 2022

Purpose:

The purpose of this study was to examine the respiratory strategies used by persons with Parkinson's disease (PD) to support louder speech in response to two voice interventions. Contrasting interventions were selected to investigate the role of internal and external cue strategies on treatment outcomes. LSVT LOUD, which uses an internal cueing framework, and the SpeechVive prosthesis, which employs an external noise cue to elicit louder speech, were studied.

Method:

Thirty-four persons with hypophonia secondary to idiopathic PD were assigned to one of three groups: LSVT LOUD (
n
= 12), SpeechVive (
n
= 12), or a nontreatment clinical control (
n
= 10). The LSVT LOUD and SpeechVive participants received 8 weeks of voice intervention. Acoustic and respiratory kinematic data were simultaneously collected at pre-, mid- and posttreatment during a monologue speech sample. Intervention outcomes included sound pressure level (SPL), utterance length, lung volume initiation, lung volume termination, and lung volume excursion.

Results:

As compared to controls, the LSVT LOUD and SpeechVive participants significantly increased SPL at mid- and posttreatment, thus confirming a positive intervention effect. Treatment-related changes in speech breathing were further identified, including significantly longer utterance lengths (syllables per breath group) at mid- and posttreatment, as compared to pretreatment. The respiratory strategies used to support louder speech varied by group. The LSVT LOUD participants terminated lung volume at significantly lower levels at mid- and posttreatment, as compared to pretreatment. This finding suggests the use of greater expiratory muscle effort by the LSVT LOUD participants to support louder speech. Participants in the SpeechVive group did not significantly alter their respiratory strategies across the intervention period. Single-subject effect sizes highlight the variability in respiratory strategies used across speakers to support louder speech.

Conclusions:

This study provides emerging evidence to suggest that the LSVT LOUD and SpeechVive therapies elicit different respiratory adjustments in persons with PD. The study highlights the need to consider respiratory function when addressing voice targets in persons with PD.
Target tracking method of Siamese networks based on the broad learning system
Authors: Zhang Dan , Chen C. L. Philip , Li Tieshan , Zuo Yi , Duy Nguyen Quang
Published: September 2022

Target tracking has a wide range of applications in intelligent transportation, real‐time monitoring, human‐computer interaction and other aspects. However, in the tracking process, the target is prone to deformation, occlusion, loss, scale variation, background clutter, illumination variation, etc., which bring great challenges to realize accurate and real‐time tracking. Tracking based on Siamese networks promotes the application of deep learning in the field of target tracking, ensuring both accuracy and real‐time performance. However, due to its offline training, it is difficult to deal with the fast motion, serious occlusion, loss and deformation of the target during tracking. Therefore, it is very helpful to improve the performance of the Siamese networks by learning new features of the target quickly and updating the target position in time online. The broad learning system (BLS) has a simple network structure, high learning efficiency, and strong feature learning ability. Aiming at the problems of Siamese networks and the characteristics of BLS, a target tracking method based on BLS is proposed. The method combines offline training with fast online learning of new features, which not only adopts the powerful feature representation ability of deep learning, but also skillfully uses the BLS for re‐learning and re‐detection. The broad re‐learning information is used for re‐detection when the target tracking appears serious occlusion and so on, so as to change the selection of the Siamese networks search area, solve the problem that the search range cannot meet the fast motion of the target, and improve the adaptability. Experimental results show that the proposed method achieves good results on three challenging datasets and improves the performance of the basic algorithm in difficult scenarios.
Synthetic data generation for machine learning model training for energy theft scenarios using cosimulation
Authors: Narayanan Anantha , Hardy Trevor
Published: September 2022

Technical and non‐technical losses in distribution circuits result in significant economic costs to power utilities. One type of non‐technical loss is energy theft by various means including illegal tapping of feeders, bypassing the meter, and billing fraud. These losses are usually hard to detect, and can remain undetected for long periods of time. Machine learning models have been proven effective in detecting these conditions, but rely on the availability of large, good‐quality training data sets. The problem is exacerbated by the imbalanced nature of data related to these conditions—energy theft, though costly, is very rare. The available data sets generally have very few samples of theft with most of the data pertaining to normal operation. Such data sets are generally not suitable to train machine learning models. In this paper, an overview of energy theft detection techniques, the challenges with their data needs, and the limitations of current techniques to bridge such data limitations is presented. A co‐simulation framework is proposed to generate reliable training data for machine learning algorithms for theft detection. An example scenario is presented and a machine learning model is built to detect certain kinds of energy theft.
Application of 3D scanning technology in Royal Malaysian Air Force Industrial Revolution 4.0‐based aircraft maintenance
Authors: Thulasy T. Nanthakumaran , Nohuddin Puteri N. E. , Nusyirwan Istas Fahrurrazi , Ahmad Hijazi Mohd Hanafi , Abdul Zahra Musaddak Maher
Published: September 2022

3D scanning is rapidly becoming a key maintenance tool. Aerospace was a pioneer in adopting 3D scanning technology because aircraft manufacture and maintenance require precision. Monitoring deterioration, removing components for maintenance, and verifying covert operations are not practical or helpful without technology. Ultra‐precise 3D scanning is needed to ensure aeroplane airworthiness. The Royal Malaysian Air Force is facing issues maintaining the structural integrity and time‐consuming manual inspections, which exposes technicians to error and delays aircraft maintenance. Furthermore, the Sukhoi Su‐30MKM fighter jet has updated avionics, missiles, and bombs. Sukhoi's structural integrity is under jeopardy after a decade of service. This study describes the process of scanning aircraft in 3D and creating 3D representations in Su‐30MKM maintenance. The study also covers the digital transformation of aircraft construction into a model. As a result, the proposed 3D Scanning Maintenance System has assisted the maintenance team to accelerate reverse engineering, aircraft maintenance operations. Also, the 3D scanning application increases the effectiveness of repairing and maintaining Su‐30MKM in line with the Royal Malaysian Air Force's mission readiness to embrace Industrial Revolution 4.0.
Efficient interleaved high step‐up converter with wide load range soft switching operation
Authors: Akhlaghi Baharak , Farzanehfard Hosein
Published: September 2022

The output voltage of the renewable energy resources such as photovoltaic and fuel cell systems is relatively low. Therefore, in the renewable energy‐based power generation systems, high step‐up (HSU) DC‐DC converters are demanded between the renewable energy resource and the grid. The required characteristics of such HSU converters are low size, cost, number of elements, current ripple, and high efficiency. In response, in this paper, a new non‐isolated HSU converter with interleaved structure and resonant operation is presented. The proposed converter achieves high voltage gain and full soft switching performance over a wide range of load variations while utilizing low number of components. In this converter, the voltage gain is adjusted by tuning the coupled inductors turns ratio and the resonant frequency. The semiconductors voltage stress is low in comparison to the other counterpart converters with resonant operation. Also, the converter uses interleaving technique to reduce the input current ripple. Comprehensive theoretical analysis of the converter is presented and its performance is compared with the recent counterparts. In order to validate the converter effectiveness, a laboratory prototype is implemented and the experimental results are provided.
A spectroscopic modelling method for the detached eclipsing binaries to derive atmospheric parameters
Authors: Chen Xiang-Lei , Luo A-Li , Chen Jian-Jun , Wang Rui , Zhang Xiao-Bin , Hou Wen , Qiu Bo , Zuo Fang
Published: September 2022

Based on luminosity contributions, we develop aspectroscopic modelling method to derive atmospheric parameters of component stars in binary systems. The method is designed for those spectra of binaries that show double-lined features due to radial-velocity differences between the component stars. We first derive the orbital parameters and the stellar radii by solving the light and radial-velocity curves. The luminosity contributions in different phases can then be calculated. We construct a synthesised double-lined spectra model by superposing theoretical single-star spectra according to the luminosity contributions. Finally, we derive the atmospheric parameters of each component star using the model-fitting method. For multi-epoch double-lined spectra observed by the Large sky Area Multi-Object Spectroscopic Telescope (LAMOST) Medium Resolution Survey (R ~ 7500), our method gives robust results for detached eclipsing binary systems observed in different orbital phases. Furthermore, this method can also be applied to other spectroscopic data with different resolutions as long as the systems are detached eclipsing binaries with nearly spherical stars.
Analytical determination of orbital elements using Fourier analysis
Authors: Delisle J.-B. , Ségransan D.
Published: September 2022

The ESA global astrometry space mission Gaia has been monitoring the position of a billion stars since 2014. The analysis of such a massive dataset is challenging in terms of the data processing involved. In particular, the blind detection and characterization of single or multiple companions to stars (planets, brown dwarfs, or stars) using Gaia astrometry requires highly efficient algorithms. In this article, we present a set of analytical methods to detect and characterize companions in scanning space astrometric time series as well as via a combination of astrometric and radial velocity time series. We propose a general linear periodogram framework and we derive analytical formulas for the false alarm probability (FAP) of periodogram peaks. Once a significant peak has been identified, we provide analytical estimates of all the orbital elements of the companion based on the Fourier decomposition of the signal. The periodogram, FAP, and orbital elements estimates can be computed for the astrometric and radial velocity time series separately or in tandem. These methods are complementary with more accurate and more computationally intensive numerical algorithms (e.g., least-squares minimization, Markov chain Monte-Carlo, genetic algorithms). In particular, our analytical approximations can be used as an initial condition to accelerate the convergence of numerical algorithms. Our formalism has been partially implemented in the Gaia exoplanet pipeline for the third Gaia data release. Since the Gaia astrometric time series are not yet publicly available, we illustrate our methods on the basis of Hipparcos data, together with on-ground CORALIE radial velocities, for three targets known to host a companion: HD 223636 (HIP 117622), HD 17289 (HIP 12726), and HD 3277 (HIP 2790).
Dielectronic recombination data for dynamic finite-density plasmas
Authors: Bleda E. A. , Altun Z. , Badnell N. R.
Published: September 2022

Dielectronic (DR) and radiative (RR) recombination rate coefficients for 19 phosphorous-like ions, between S+ and W59+, forming sulphur-like ions, have been calculated as part of the assembly of a level-resolved database necessary for modelling dynamic finite-density plasmas, within the generalized collisional-radiative framework. Calculations have been performed within the multi-configuration Breit-Pauli approximation using the code AUTOSTRUCTURE, from both ground and metastable initial states, in both LS coupling and intermediate coupling (IC), allowing for ∆n = 0 and ∆n = 1 core-excitations from the ground and metastable levels involved in the DR processes. Partial and total DR coefficients have been calculated for S+ to Zn15+, as well as Kr21+, Mo27+, Xe39+, and W59+. Results for a selection of ions from the sequence are discussed in this paper, and are compared with the existing theoretical and experimental results. Dielectronic recombination results for the Fe11+ resonance spectrum associated with ∆n = 0 core excitations are compared with those from merged-beam measurements. Fits to the total (IC) DR and RR rate coefficients are presented in tabular form. Partial LS and IC DR and RR rate coefficients are archived in the open access database OPEN-ADAS in standard ADAS adf09 and adf48 file formats, respectively.