bluuebunny/crossref_metadata_2025 huggingface dataset:
Vasculogenic properties of adventitial Sca-1+CD45+ progenitor cells in mice: a potential source of vasa vasorum in atherosclerosis
Authors: Toledo-Flores Deborah , Williamson Anna , Schwarz Nisha , Fernando Sanuja , Dimasi Catherine , Witt Tyra A. , Nguyen Thao M. , Puranik Amrutesh S. , Chue Colin D. , Delacroix Sinny , Spoon Daniel B. , Bonder Claudine S. , Bursill Christina A. , Di Bartolo Belinda A. , Nicholls Stephen J. , Simari Robert D. , Psaltis Peter J.
Published: May 2019

The cellular origins of vasa vasorum are ill-defined and may involve circulating or local progenitor cells. We previously discovered that murine aortic adventitia contains Sca-1+CD45+progenitors that produce macrophages. Here we investigated whether they are also vasculogenic. In aortas of C57BL/6 mice, Sca-1+CD45+cells were localised to adventitia and lacked surface expression of endothelial markers (<1% for CD31, CD144, TIE-2). In contrast, they did show expression of CD31, CD144, TIE-2 and VEGFR2 in atheroscleroticApoE−/−aortas. Although Sca-1+CD45+cells from C57BL/6 aorta did not express CD31, they formed CD31+colonies in endothelial differentiation media and produced interconnecting vascular-like cords in Matrigel that contained both endothelial cells and a small population of macrophages, which were located at branch points. Transfer of aortic Sca-1+CD45+cells generated endothelial cells and neovesselsde novoin a hindlimb model of ischaemia and resulted in a 50% increase in perfusion compared to cell-free control. Similarly, their injection into the carotid adventitia ofApoE−/−mice produced donor-derived adventitial and peri-adventitial microvessels after atherogenic diet, suggestive of newly formed vasa vasorum. These findings show that beyond its content of macrophage progenitors, adventitial Sca-1+CD45+cells are also vasculogenic and may be a source ofvasa vasorumduring atherogenesis.
Numerical Analysis of Bead Magnetophoresis from Flowing Blood in a Continuous-Flow Microchannel: Implications to the Bead-Fluid Interactions
Authors: Gómez-Pastora Jenifer , Karampelas Ioannis H. , Bringas Eugenio , Furlani Edward P. , Ortiz Inmaculada
Published: May 2019

In this work, we report a numerical flow-focused study of bead magnetophoresis inside a continuous-flow microchannel in order to provide a detailed analysis of bead motion and its effect on fluid flow. The numerical model involves a Lagrangian approach and predicts the bead separation from blood and their collection into a flowing buffer by the application of a magnetic field generated by a permanent magnet. The following scenarios are modelled: (i) one-way coupling wherein momentum is transferred from the fluid to beads, which are treated as point particles, (ii) two-way coupling wherein the beads are treated as point particles and momentum is transferred from the bead to the fluid and vice versa, and (iii) two-way coupling taking into account the effects of bead volume in fluid displacement. The results indicate that although there is little difference in the bead trajectories for the three scenarios, there is significant variation in the flow fields, especially when high magnetic forces are applied on the beads. Therefore, an accurate full flow-focused model that takes into account the effects of the bead motion and volume on the flow field should be solved when high magnetic forces are employed. Nonetheless, when the beads are subjected to medium or low magnetic forces, computationally inexpensive models can be safely employed to model magnetophoresis.
Antimicrobial activity and carbohydrate metabolism in the bacterial metagenome of the soil-living invertebrate Folsomia candida
Authors: Agamennone Valeria , Le Ngoc Giang , van Straalen Nico M. , Brouwer Abraham , Roelofs Dick
Published: May 2019

The microbiome associated with an animal’s gut and other organs is considered an integral part of its ecological functions and adaptive capacity. To better understand how microbial communities influence activities and capacities of the host, we need more information on the functions that are encoded in a microbiome. Until now, the information about soil invertebrate microbiomes is mostly based on taxonomic characterization, achieved through culturing and amplicon sequencing. Using shotgun sequencing and various bioinformatics approaches we explored functions in the bacterial metagenome associated with the soil invertebrate Folsomia candida, an established model organism in soil ecology with a fully sequenced, high-quality genome assembly. Our metagenome analysis revealed a remarkable diversity of genes associated with antimicrobial activity and carbohydrate metabolism. The microbiome also contains several homologs to F. candida genes that were previously identified as candidates for horizontal gene transfer (HGT). We suggest that the carbohydrate- and antimicrobial-related functions encoded by Folsomia’s metagenome play a role in the digestion of recalcitrant soil-born polysaccharides and the defense against pathogens, thereby significantly contributing to the adaptation of these animals to life in the soil. Furthermore, the transfer of genes from the microbiome may constitute an important source of new functions for the springtail.
Photoluminescent organisms: how to make fungi glow through biointegration with lanthanide metal-organic frameworks
Authors: Rosário Jeferson , da Luz Leonis L. , Geris Regina , Ramalho Jéssica G. S. , da Silva Antônio F. , Júnior Severino Alves , Malta Marcos
Published: May 2019

We show that filamentous fungi can emit green or red light after the accumulation of particulate lanthanide metal-organic frameworks over the cell wall. These new biohybrids present photoluminescence properties that are unaffected by the components of the cell wall. In addition, the fungal cells internalise lanthanide metal-organic framework particles, storing them into organelles, thereby making these materials promising for applications in living imaging studies.
Multimodal Fluorescent Polymer Sensor for Highly Sensitive Detection of Nitroaromatics
Authors: Kumar Vishal , Maiti Binoy , Chini Mrinmoy Kumar , De Priyadarsi , Satapathi Soumitra
Published: May 2019

Detection of nitroaromatic explosives with high sensitivity and selectivity is extremely important for civilian and military safety. Here, we report the synthesis and multimodal sensing applications of an emissive alanine based dansyl tagged copolymer P(MMA-co-Dansyl-Ala-HEMA) (DCP), synthesized by RAFT copolymerization. The fluorescent co-polymer exhibited high sensitivity and selectivity towards conventional nitroaromatic explosives such as DNT, TNT and TNP in solution at lower range of µM level and also with saturated vapor of NACs. The quantum yield of the co-polymer was measured to be very high (Φf = 77%) which make it an ideal candidate for sensing in solution as well as in vapor phase. The fluorescence signal from DCP copolymer gets significantly quenched upon addition of aliquots of DNT, TNT, and TNP. The Stern-Volmer constant was calculated to be very high. The quenching mechanism was further established by fluorescence up-conversion, time-resolved fluorescence and steady state absorption spectroscopy. The energetics of sensing process was calculated by Density Functional Theory (DFT) studies. We also fabricate a thin film polymer sensor which was able to detect nitroaromatic vapors with high selectivity. This opens up the possibility of building a low-cost and light-weight nitroaromatic explosives sensor for field use.
Divergently expressed RNA identification and interaction prediction of long non-coding RNA and mRNA involved in Hu sheep hair follicle
Authors: Lv Xiaoyang , Gao Wen , Jin Chengyan , Wang Yue , Chen Weihao , Wang Lihong , Zou Shuangxia , Sheng Shuixing , Chen Ling , Sun Wei
Published: May 2019

Hair follicles are the basis of the formation of Hu sheep pattern. This study was to employ whole transcriptome sequencing to screen differentially expressed long non-coding RNAs (lncRNAs) between three wave patterns in lambskin. In this study, three groups of 2-day-old Hu sheep were selected from full-sib individuals that included small, medium, and large waves, and hair follicle tissues were collected from dorsal side of Hu sheep. LncRNA and mRNA expression profiles were analyzed by whole transcriptome sequencing technology. 33, 31, and 41 differentially expressed lncRNAs were selected between large and medium, medium and small, and large and small, respectively. 458, 481, and 498 differentially expressed mRNAs were found between large and medium, medium and small, and large and small, respectively, by RNA-seq analysis. qRT-PCR results of 16 randomly selected lncRNAs and mRNAs were similar to the sequencing results. Correlation analysis of lncRNA and mRNA expression showed that, several lncRNAs may be enriched for hair follicle such as Wnt, mTOR, Notch signaling pathways. Our results aid in excavation of mRNAs and lncRNAs in hair follicle, and providing a basis for future study on pattern formation mechanisms.
High intimal flap mobility assessed by intravascular ultrasound is associated with better short-term results after TEVAR in chronic aortic dissection
Authors: Lortz Julia , Papathanasiou Maria , Rammos Christos , Steinmetz Martin , Lind Alexander , Tsagakis Konstantinos , Schlosser Thomas , Jakob Heinz , Rassaf Tienush , Jánosi Rolf Alexander
Published: May 2019

Thoracic endovascular aortic repair (TEVAR) in chronic aortic dissection remains controversial. We analysed whether a high intimal flap mobility (IFM) of the dissection membrane has an impact on aortic remodelling after TEVAR in chronic Type B aortic dissection. Patients undergoing TEVAR with intravascular ultrasound (IVUS) were analysed and IFM was calculated. High IFM was defined as maximum flap amplitude >3 mm. For determining aortic remodelling, the degree of true lumen (TL) expansion was analysed in the last available follow-up CT. Fifty-two patients (63.6 ± 15.4 years) with a mean follow-up of 26.6 ± 20.7 months were analysed. The mobile flap group (n = 29) showed higher absolute TL expansion at the distal stent-graft (5.9 ± 3.1 vs. 3.3 ± 5.4 mm; p = 0.036) and a higher increase in TL diameter (18 ± 10 vs. 9 ± 15%; p = 0.017) compared to the non-mobile group (n = 23). Basic TEVAR-related outcome characteristics were comparable, but the mobile intimal flap group showed a lower re-intervention rate (3 vs. 8pts.; p = 0.032) in chronic dissections. High IFM in chronic Type B aortic dissection is linked to improved aortic remodelling and is associated with a lower re-intervention rate over time. IVUS assessment of IFM in chronic Type B aortic dissection might be helpful in identifying patients with better remodelling after TEVAR.
Individual differences in working memory capacity and cue-guided behavior in humans
Authors: Garofalo Sara , Battaglia Simone , di Pellegrino Giuseppe
Published: May 2019

Information gathered via Pavlovian and Instrumental learning can be integrated to guide behavior, in a phenomenon experimentally known as Pavlovian-to-Instrumental Transfer (PIT). In particular, in appetitive PIT, a reward-associated cue is able to enhance the instrumental response previously associated with the same (outcome-specific PIT), or a similar (general PIT), reward. The PIT effect is increasingly investigated for its numerous implications in clinical contexts as well as daily life situations. Nevertheless, the precise mechanism behind it is not yet clear. The relation between the PIT effect and high-level cognitive abilities - like working memory - is still unknown, but potentially relevant to unveil its functioning. The present study aims to examine the precise relationship between individual differences in working memory and the two forms of PIT effect, namely outcome-specific and general. For this purpose, 100 participants underwent a classical PIT paradigm. Results showed a relationship between individual working memory and outcome-specific PIT, but not general PIT. Importantly, the role of working memory was not related to the acquisition of the learning contingencies, but rather linked to an imbalance between congruent and incongruent choices. The results are discussed in terms of the adaptive and maladaptive implications for human behavior.
The importance of inter-individual Kupffer cell variability in the governance of hepatic toxicity in a 3D primary human liver microtissue model
Authors: Kermanizadeh Ali , Brown David M. , Moritz Wolfgang , Stone Vicki
Published: May 2019

The potential for nanomaterial (NM) translocation to secondary organs is a realistic prospect, with the liver one of the most important target organs. Traditional in vitro or ex vivo hepatic toxicology models are often limiting and/or troublesome (i.e. short life-span reduced metabolic activity, lacking important cell populations, high inter-individual variability, etc.). Building on previous work, this study utilises a 3D human liver microtissue (MT) model (MT composed of mono-culture of hepatocytes or two different co-culture MT systems with non-parenchymal cell (NPC) fraction sourced from different donors) to investigate the importance of inter-donor variability of the non-parenchymal cell population in the overall governance of toxicological response following exposure to a panel of NMs. To the best of our knowledge, this is the first study of its kind to investigate inter-donor variability in hepatic NPC population. The data showed that the Kupffer cells were crucial in dictating the overall hepatic toxicity following exposure to the materials. Furthermore, a statistically significant difference was noted between the two co-culture MT models. However, the trend for particle-induced biological responses was similar between the co-cultures (cytotoxicity, cytokine production and caspase activity). Therefore, despite the recognition of some discrepancies in the absolute values between the co-culture models, the fact that the trends and patterns of biological responses were comparable between the multi-cellular models we propose the 3D liver MT to be a valuable tool in particle toxicology.
Impact of sleep health on self-perceived health status
Authors: Dalmases Mireia , Benítez Ivan , Sapiña-Beltran Esther , Garcia-Codina Oriol , Medina-Bustos Antonia , Escarrabill Joan , Saltó Esteve , Buysse Daniel J. , Plana Rosa E. , Sánchez-de-la-Torre Manuel , Barbé Ferran , de Batlle Jordi
Published: May 2019

Although sleep habits have long been recognized as a promoter of health, the World Health Organization 2014 report on non-communicable diseases (NCDs) only listed smoking, alcohol intake, diet and physical activity (PA) as key modifiable risk factors that could enhance health and prevent NCDs. Cross-sectional data on 4385 surveys from the 2015 Catalan Health Survey, representative of the 2015 non-institutionalized Catalan population over age 14, were used to assess and compare the independent associations of low PA (International Physical Activity Questionnaire (IPAQ): low activity); poor diet (PREvención con DIeta MEDiterránea questionnaire (PREDIMED): low-adherent); poor sleep health (Satisfaction, Alertness, Timing, Efficiency and Duration scale (SATED): <8); smoking status; and, alcohol intake (high-risk drinker based on standard drink units) with having a poor self-perceived health status. Logistic regression models adjusted by age, gender, education level and number of comorbidities showed that poor sleep health had the strongest independent association with poor self-perceived health status (OR = 1.70; 95%CI: 1.37–2.12), followed by poor diet (OR = 1.37; 95%CI: 1.10–1.72) and low PA (OR = 1.31; 95%CI: 1.01–1.69). This suggests that sleep habits should be included among the important modifiable health risk factors and be considered a key component of a healthy lifestyle.
The Mott to Kondo transition in diluted Kondo superlattices
Authors: Lee Hovan , Plekhanov Evgeny , Blackbourn David , Acharya Swagata , Weber Cedric
Published: May 2019

In condensed matter, a tremendous effort has been generated to realise Kondo lattices both experimentally and theoretically. The pursuit of independent magnetic moments, via charge localization, is paramount for applications in nanotechnology. Particularly, systems with simultaneous charge/spin degrees of freedom can manifest both Kondo spin quenching and Mott–Hubbard charge localization. Experimental frameworks illuminating pathways between the two are physically and technologically significant, and hardly observed in reality. Recent developments in controlling densities/temperatures of strongly correlated impurities on surfaces has opened up new possibilities. Such systems introduce mechanisms to study Kondo/Mott-physics interplay methodically. However, the pathway between Kondo physics and charge localization remains elusive. In this work, we investigate the phase diagram of superlattice structures of f-elements on substrates, assessing required conditions for obtaining Kondo superlattices. We unveil pathways between Kondo quenching and Mott localization, and identify non-trivial charge density waves emerging from the competition of charge localization and Kondo physics.
Hyperfine interaction in atomically thin transition metal dichalcogenides
Authors: Avdeev Ivan D. , Smirnov Dmitry S.
Published: May 2019

A theory of spin–valley dynamics in transition metal dichalcogenide monolayers induced by hyperfine interaction is developed.
New multifunctional 3D porous metal–organic framework with selective gas adsorption, efficient chemical fixation of CO2 and dye adsorption
Authors: Cheng Shan , Wu Yunlong , Jin Jing , Liu Jiao , Wu Dan , Yang Guoping , Wang Yao-Yu
Published: May 2019

A new porous Mn(ii)-based MOF was obtained. The studies indicated it exhibits an effective storage capacity for CO2, highly efficient catalyst behavior for epoxides with different substituents and rapid adsorption behavior of different dyes.
Druggability assessment of mammalian Per–Arnt–Sim [PAS] domains using computational approaches
Authors: de Souza João V. , Reznikov Sylvia , Zhu Ruidi , Bronowska Agnieszka K.
Published: May 2019

Protein dynamics finely tune the “druggability” of mammalian PAS-B domains, as assessed by atomistic molecular dynamics simulations and hotspot mapping.
Epitaxial patterned Bi2FeCrO6nanoisland arrays with room temperature multiferroic properties
Authors: Huang Wei , Li Shun , Bouzidi Soraya , Lei Lei , Zhang Zuotai , Xu Ping , Cloutier Sylvain G. , Rosei Federico , Nechache Riad
Published: May 2019

Epitaxial Bi2FeCrO6nanoisland arrays with room-temperature multiferroic properties were fabricated by patterned SiO2template-assisted pulsed laser deposition.
Exchange coupling in a frustrated trimetric molecular magnet reversed by a 1D nano-confinement
Authors: Domanov Oleg , Weschke Eugen , Saito Takeshi , Peterlik Herwig , Pichler Thomas , Eisterer Michael , Shiozawa Hidetsugu
Published: May 2019

Single-molecule magnets exhibit magnetic ordering due to exchange coupling between localized spin components that makes them primary candidates as nanometric spintronic elements.
Fabrication, characterization, and magnetic properties of exchange-coupled porous BaFe8Al4O19/Co0.6Zn0.4Fe2O4 nanocomposite magnets
Authors: Han Guanghui , Liu Yequn , Yang Weiwei , Geng Shuo , Cui Weibin , Yu Yongsheng
Published: May 2019

BaFe8Al4O19/Co0.6Zn0.4Fe2O4 nanocomposite magnets with a porous microstructure and efficient exchange-coupling were obtained via a facile auto-combustion method.
Adaptive kinetic Monte Carlo simulations of surface segregation in PdAu nanoparticles
Authors: Li Lei , Li Xinyu , Duan Zhiyao , Meyer Randall J. , Carr Rob , Raman Sumathy , Koziol Lucas , Henkelman Graeme
Published: May 2019

Surface segregation in bimetallic nanoparticles is critically important for their catalytic activity. Here, we use the adaptive kinetic Monte Carlo method to model the segregation dynamics in PdAu NPs over experimentally relevant time scales and demonstrate thermodynamically unfavorable Au@Pd core–shell and alloy NPs can be kinetically trapped at low temperature.
Mapping plasmon-enhanced upconversion fluorescence of Er/Yb-doped nanocrystals near gold nanodisks
Authors: Aigouy Lionel , González Maria-Ujué , Lin Hung-Ju , Schoenauer-Sebag Mathilde , Billot Laurent , Gredin Patrick , Mortier Michel , Chen Zhuoying , García-Martín Antonio
Published: May 2019

Fluorescence enhancements near metallic nanostructures have been directly mapped with a single nanocrystal attached at the end of a tip.
Azulenocyanines immobilized on graphene; on the way to panchromatic absorption and efficient DSSC blocking layers
Authors: Volland Michel , Lennert Annkatrin , Roth Alexandra , Ince Mine , Torres Tomas , Guldi Dirk M.
Published: May 2019

Herein, a novel electron donor–acceptor hybrid consisting of a NIR absorbing azulenocyanine as an electron donor and few-layer graphene as an electron acceptor was prepared.
Fabrication of thermally conductive and electrically insulating polymer composites with isotropic thermal conductivity by constructing a three-dimensional interconnected network
Authors: Yuan Hao , Wang Yang , Li Ting , Wang Yijie , Ma Piming , Zhang Hongji , Yang Weijun , Chen Mingqing , Dong Weifu
Published: May 2019

Efficient heat removal via thermal management materials has become one of the most critical challenges in the development of modern microelectronic devices.
Graphene hybrid colloidal crystal arrays with photo-controllable structural colors
Authors: Fu Fanfan , Chen Zhuoyue , Wang Huan , Liu Cihui , Liu Yuxiao , Zhao Yuanjin
Published: May 2019

Graphene oxide was introduced into non-close-packed colloidal crystal arrays for constructing intelligent structural color materials with photo-responsive features.
Time-dependent FTIR microscopy for mechanism investigations and kinetic measurements in interfacial polymerisation: a microporous polymer film study
Authors: Ren Dan , Yeo Jet Ing Ngie , Liu Tian-Yin , Wang Xiaolin
Published: May 2019

The real-time characterisation of interfacial polymerization is demonstrated by using FTIR-mapping spectroscopy with microscopy to deduce the reaction kinetics.
Aziridines and azetidines: building blocks for polyamines by anionic and cationic ring-opening polymerization
Authors: Gleede Tassilo , Reisman Louis , Rieger Elisabeth , Mbarushimana Pierre Canisius , Rupar Paul A. , Wurm Frederik R.
Published: May 2019

The synthesis of aziridine and azetidine monomers and their ring-opening polymerizationviadifferent mechanisms is reviewed.
Improved malleability of miniemulsion-based vitrimers throughin situgeneration of carboxylate surfactants
Authors: Vaidyula Rinish Reddy , Dugas Pierre-Yves , Rawstron Eleanor , Bourgeat-Lami Elodie , Montarnal Damien
Published: May 2019

Vitrimer particles with excellent osmotic and hydrolytic stability were synthesized by miniemulsion polymerization thanks toin situgeneration of surfactants.
Near-zero thermal expansion coordinated with geometric flexibility and π⋯π interaction in anisotropic [Zn8(SiO4)(m-BDC)6]n
Authors: Liu Zhanning , Jiang Xingxing , Wang Chiming , Liu Chenxi , Lin Zheshuai , Deng Jinxia , Chen Jun , Xing Xianran
Published: May 2019

A MOF material with intrinsic volumetric near-ZTE over a wide temperature range has been reported. The near-ZTE behavior derives from the synergistic effect of geometric deformation and π⋯π interaction.
N-Heterocyclic carbene-catalyzed formal [3 + 3] annulation of alkynoic acid esters with indolin-3-ones: access to functionalized pyrano[3,2-b]indol-2-ones
Authors: Sun Kewen , Jin Shiyi , Fang Shuaishuai , Ma Rui , Zhang Xinmiao , Gao Maoyu , Zhang Wanqi , Lu Tao , Du Ding
Published: May 2019

The structurally interesting pyrano[3,2-b]indol-2-ones were synthesized by an N-heterocyclic carbene-catalyzed formal [3 + 3] annulation of alkynoic acid esters.
An alternative and efficient synthesis of MLN4924, a selective NEDD8 inhibitor
Authors: Kim Hong-Rae , Hyun Young Eum , Jarhad Dnyandev B. , Yu Jinha , Jeong Lak Shin
Published: May 2019

A highly efficient synthesis of MLN4924viaregioselective removal of α-alkoxy group and stereoselective reduction of ketone is described.
Bistrifluoromethylated organocuprate [Ph4P]+[Cu(CF3)2]−: synthesis, characterization and its application for trifluoromethylation of activated heteroaryl bromides, chlorides and iodides
Authors: Liu He , Shen Qilong
Published: May 2019

The synthesis and characterization of a bistrifluoromethylated organocuprate [Ph4P]+[Cu(CF3)2]− and its reactions with a variety of activated heteroaryl bromides, chlorides and iodides were described.
Microscopic measurements on the decomposition behaviour of methane hydrates formed in natural sands
Authors: Wen Long , Zhou Xuebing , Liang Deqing
Published: May 2019

In this work, the decomposition behaviour of methane hydrate in porous media was investigated microscopically using powder X-ray diffraction, cryogenic scanning electron microscopy and in situ Raman spectroscopy.
Contamination assessment, source apportionment and health risk assessment of heavy metals in paddy soils of Jiulong River Basin, Southeast China
Authors: Huang Huabin , Lin Chengqi , Yu Ruilian , Yan Yu , Hu Gongren , Li Huojin
Published: May 2019

APCS-MLR and dose–response model were combined to identify the sources and human health risks of heavy metals in paddy soils.
In vitro and in vivo evaluation of a novel mitomycin nanomicelle delivery system
Authors: Yang Hongmei , Wang Miao , Huang Yihe , Qiao Qiaoyu , Zhao Chunjie , Zhao Min
Published: May 2019

The introduction of a micellar delivery system of MMC increase efficiency, reduce toxicity and enhance specific interactions in tumor.
Electronic and optical absorption properties of organic–inorganic perovskites as influenced by different long-chain diamine molecules: first-principles calculations
Authors: Zhou Wangzhe , Li Dan , Zhang Di , Tang Hu , Zhang He , Liang Chunjun
Published: May 2019

Organic–inorganic perovskites have demonstrated significant promise as photovoltaic materials due to their excellent photoelectric properties.
Stable radical versus reversible σ-bond formation of (porphyrinyl)dicyanomethyl radicals
Authors: Adinarayana B. , Shimizu Daiki , Furukawa Ko , Osuka Atsuhiro
Published: May 2019

(Porphyrinyl)dicyanomethyl radicals were produced by oxidation of dicyanomethyl-substituted porphyrins with PbO2.
Supported molten-salt membranes for carbon dioxide permeation
Authors: Mutch Greg A. , Qu Liu , Triantafyllou Georgios , Xing Wen , Fontaine Marie-Laure , Metcalfe Ian S.
Published: May 2019

First review of supported molten-salt membranes highlighting materials challenges, mechanistic development and manufacturing opportunities towards energy applications.
Facile self-templated synthesis of P2-type Na0.7CoO2 microsheets as a long-term cathode for high-energy sodium-ion batteries
Authors: Peng Bo , Sun Zhihao , Jiao Shuhong , Li Jie , Wang Gongrui , Li Yapeng , Jin Xu , Wang Xiaoqi , Li Jianming , Zhang Genqiang
Published: May 2019

Sodium-ion batteries are one of the most promising candidates for large-scale energy storage systems due to the low cost of sodium source and their similar working principle to lithium-ion batteries.
A nanoarchitectured Na6Fe5(SO4)8/CNTs cathode for building a low-cost 3.6 V sodium-ion full battery with superior sodium storage
Authors: Li Shiyu , Song Xiaosheng , Kuai Xiaoxiao , Zhu Wenchang , Tian Kai , Li Xifei , Chen Mingzhe , Chou Shulei , Zhao Jianqing , Gao Lijun
Published: May 2019

A novel high-voltage cathode material Na6Fe5(SO4)8 (NFS) is successfully prepared for sodium-ion batteries for the first time. It is found that the NFS cathode shows a high working voltage of 3.7 V, together with an attractive energy density approaching 450 W h kg−1. And, based on an NFS@5%CNTs cathode and hard carbon (HC) anode, a full NFS@5%CNTs//HC cell can deliver an impressive energy density approaching 350 W h kg−1 and excellent cycling stability over 1000 cycles at 2C.
How semiconductor transition metal dichalcogenides replaced graphene for enhancing anticorrosion
Authors: Ding Jiheng , Zhao Hongran , Zhao Xinpeng , Xu Beiyu , Yu Haibin
Published: May 2019

Influences of semiconductor transition metal dichalcogenides on the corrosion behavior of metals under epoxy nanocomposite coatings.
A postmodification strategy to modulate the photoluminescence of carbon dots from blue to green and red: synthesis and applications
Authors: Zheng Min , Qiao Lihong , Su Ya , Gao Pengli , Xie Zhigang
Published: May 2019

Green and red fluorescent carbon dots were successfully prepared by the conjugation of CD-B with VC and acetaldehyde, respectively.
Stimuli-responsive local drug molecule delivery to adhered cells in a 3D nanocomposite scaffold
Authors: Motealleh Andisheh , De Marco Rossella , Kehr Nermin Seda
Published: May 2019

pH-Responsive nanocomposite hydrogels deliver high dosages of drug to cancer cells while delivering less of the drug to healthy cells.
A long wavelength emission two-photon fluorescent probe for highly selective detection of cysteine in living cells and an inflamed mouse model
Authors: Liu Dongjie , Lv Yun , Chen Mei , Cheng Dan , Song Zhiling , Yuan Lin , Zhang Xiaobing
Published: May 2019

As a semi-essential proteinogenic amino acid and biothiol, cysteine (Cys) is highly important in many basic cellular processes.
Indicator/catalyst displacement assay: design of a latent catalyst for the selective detection and degradation of cyanide by Prussian blue analog-modified TiO2 nanoparticles
Authors: Shen Chang , Zheng Anxun , Huang Min , Tang Qian , Gong Cheng-Bin , Chow Cheuk-Fai
Published: May 2019

Prussian blue bimetallic analog (PBA)-modified TiO2 particles (NP1–3) were explored as a new generation of latent catalytic materials for the simultaneous detection and removal of cyanide using the indicator/catalytic displacement approach (ICDA).
Pentafluorosulfanylated polymers as electrets in nonvolatile organic field-effect transistor memory devices
Authors: Zhang Guoxian , Lee Yu-Jung , Gautam Prabhat , Lin Chia-Chi , Liu Cheng-Liang , Chan Julian M. W.
Published: May 2019

Styrenic polymer electrets with pentafluorosulfanylated sidechains demonstrate their charge-storage capabilities in organic nonvolatile memory devices.
Tuning the photoluminescence and anisotropic structure of PEDOT
Authors: Ivanko Iryna , Pánek Jiří , Svoboda Jan , Zhigunov Alexander , Tomšík Elena
Published: May 2019

The photoluminescence and anisotropic structure of PEDOT are obtained in the presence of ions that perturb the water structure.
Highly ordered 3D-silver nanoring arrays (3D-AgNRAs) for refractometric sensing
Authors: Liu Xueyao , Liu Wendong , Yang Bai
Published: May 2019

Multistep colloidal lithography-fabricated 3D-silver nanoring arrays were optimized by regulating their structural parameters and accomplished improved refractometric sensing performance.
A novel two-dimensional δ-InP3 monolayer with high stability, tunable bandgap, high carrier mobility, and gas sensing of NO2
Authors: Yi Wencai , Chen Xin , Wang Zhixiu , Ding Yingchun , Yang Bingchao , Liu Xiaobing
Published: May 2019

δ-InP3 monolayer possesses high electronic mobility and worthwhile sensing performance toward N-based gases (particularly NO2).
The orphan nuclear receptor TLX: an emerging master regulator of cross-talk between microglia and neural precursor cells
Authors: Lucassen Paul J. , van Dam Anne-Marie , Kandel Prasanna , Bielefeld Pascal , Korosi Aniko , Fitzsimons Carlos P. , Maletic-Savatic Mirjana
Published: May 2019

Neuroinflammation and neurogenesis have both been the subject of intensive investigation over the past 20 years. The sheer complexity of their regulation and their ubiquity in various states of health and disease have sometimes obscured the progress that has been made in unraveling their mechanisms and regulation.

A recent study by Kozareva et al. (Neuronal Signaling (2019) 3), provides evidence that the orphan nuclear receptor TLX is central to communication between microglia and neural precursor cells and could help us understand how inflammation, mediated by microglia, influences the development of new neurons in the adult hippocampus.

Here, we put recent studies on TLX into the context of what is known about adult neurogenesis and microglial activation in the brain, along with the many hints that these processes must be inter-related.
Lyman α-emitting galaxies in the epoch of reionization
Authors: Laursen Peter , Sommer-Larsen Jesper , Milvang-Jensen Bo , Fynbo Johan P. U. , Razoumov Alexei O.
Published: May 2019

With a total integration time of 168 h and a narrowband filter tuned to Lyα emission from z = 8.8, the UltraVISTA survey has set out to find some of the most distant galaxies, on the verge of the epoch of reionization. Previous calculations of the expected number of detected Lyα-emitting galaxies (LAEs) at this redshift based for example on extrapolation of lower-redshift luminosity functions did not explicitly take into account the radiative transfer of Lyα. In this work we have combined a theoretical model for the halo mass function, that is, the expected number of haloes per volume, with numerical results from high-resolution cosmological hydro-simulations post-processed with radiative transfer of ionizing UV and Lyα radiation, assessing the visibility of LAEs residing in these haloes. We have taken into account uncertainties such as cosmic variance and the anisotropic escape of Lyα, and predict that once the survey has finished, the probabilities of detecting none, one, or more than one are roughly 90%, 10%, and 1%, respectively. This is a significantly smaller success rate than in earlier predictions, due to the combined effect of a highly neutral intergalactic medium (IGM) scattering Lyα to such large distances from the galaxy that they fall outside the observational aperture, and to the actual depth of the survey being less than predicted. Because the IGM affects narrowband (NB) and broadband (BB) magnitudes differently, we argue for a relaxed colour selection criterion of mNB − mBB ≃ +0.85 in the AB system. Since the flux is dominated by the continuum, however, even if a galaxy is detectable in the NB, its probability of being selected as a narrowband excess object is ≲35%. Various additional properties of galaxies at this redshift are predicted, for example, the Lyα and UV luminosity functions, the stellar mass–halo mass relation, the spectral shape, the optimal aperture, as well as the anisotropic escape of Lyα through both the dusty, interstellar medium and through the partly neutral IGM. Finally, we describe and make public a fast numerical code for adding numbers with asymmetric uncertainties (“x+σ+−σ−”) which proves significantly more precise than the standard, but wrong, way of separately adding upper and lower uncertainties in quadrature.
Analyses of celestial pole offsets with VLBI, LLR, and optical observations
Authors: Cheng Y.-T. , Liu J.-C. , Zhu Z.
Published: May 2019

Aims. This work aims to explore the possibilities of determining the long-period part of the precession-nutation of the Earth with techniques other than very long baseline interferometry (VLBI). Lunar laser ranging (LLR) is chosen for its relatively high accuracy and long period. Results of previous studies could be updated using the latest data with generally higher quality, which would also add ten years to the total time span. Historical optical data are also analyzed for their rather long time-coverage to determine whether it is possible to improve the current Earth precession-nutation model.

Methods. Celestial pole offsets (CPO) series were obtained from LLR and optical observations and were analyzed separately by weighted least-square fits of three empirical models, including a quadratic model, a linear term plus an 18.6-year nutation term, and a linear term plus two nutation terms with 18.6-year and 9.3-year periods. Joint analyses of VLBI and LLR data is also presented for further discussion.

Results. We improved th determination of the nutation terms with both VLBI and LLR data. The VLBI data present a most reliable feature of the CPO series with the highest accuracy, and they are most important for determining the precession-nutation of the Earth. The standard errors of CPO obtained from the LLR technique have reached a level of several tens of microarcseconds after 2007, but they are probably underestimated because the models used in the calculation procedure are not perfect. Nevertheless, the poor time resolution of LLR CPO series is also a disadvantage. However, this indicates that LLR has the potential to determine celestial pole offsets with a comparably high accuracy with VLBI in the future and to serve as an independent check for the VLBI results. The current situation of LLR observations is also analyzed to provide suggestions of future improvement. The typical standard error of CPO series from historic optical observations is about two hundred times larger than that of the VLBI series and can therefore hardly contribute to the contemporary precession-nutation theory.
La viabilité du maraîchage urbain à l’épreuve de l’installation professionnelle
Authors: Plateau Lou , Maughan Noémie , Pipart Nathalie , Visser Marjolein , Hermesse Julie , Maréchal Kevin
Published: May 2019

Ces dernières années ont été caractérisées par la (ré)émergence d’une diversité de formes d’agriculture urbaine aux multiples fonctions, qui impliquent, notamment, le développement d’activités professionnelles. C’est dans ce cadre que, de 2015 à 2018, deux projets de recherche-action participative ont été mis en place à Bruxelles. Leur objectif est d’interroger les spécificités de l’installation en zone urbaine et de poser les bases d’une réflexion sur les conditions de viabilité du maraîchage sur petites surfaces et sur la durabilité des systèmes de production agricole. La phase d’installation fait l’objet d’une attention particulière au sein de ces deux projets. Ancrés dans une logique transdisciplinaire, les dispositifs de recherche renforcent la réflexivité des maraîchers et leurs capacités à identifier les nœuds auxquels ils sont confrontés dans leur trajectoire d’installation professionnelle. Nous entendons par « nœud » un ensemble thématique de tensions, compromis et/ou adaptations avec lesquels les maraîchers ont dû jongler dans l’opérationnalisation de leurs aspirations. Trois nœuds thématiques sont présentés et discutés : les stratégies d’accès au foncier, le dilemme de la mécanisation et la mobilisation d’une main-d’œuvre bénévole. Les maraîchers en phase de lancement expérimentent différentes stratégies dans le souci d’atteindre une viabilité à court terme sans pour autant dénouer entièrement les nœuds mentionnés. Nos travaux permettent d’avancer que la multitude des enjeux à résoudre pour tendre vers un projet viable sur le long terme dépasse largement les défis des seuls maraîchers en installation et implique également la (re)construction d’une communauté de pratiques et la mise en place d’un cadre légal, financier et politique favorable.
Identifying and evaluating flexible approaches for automobile body production areas
Authors: Kampker Achim , Bergweiler Georg , Bichler Marian , Hansen Jan Ole , Paulus Tobias Christian , Eser Thomas
Published: May 2019

The increasing variety of models with simultaneously lower and more volatile quantities in the demanding environment of automotive engineering calls for flexible production systems. Considering an automobile production process, the body shop can be characterized as particularly inflexible. This results from highly product-specific and automated technical solutions such as rigid fixture systems and grippers, commonly used to fulfil the demanding geometrical requirements of body parts and the respective production system. Therefore, several approaches have been developed to increase the body production flexibility. This paper presents a three-step methodology to identify promising flexibilization approaches for each area of body production, comparing the flexibility needs of the area with the flexibility offers of specific flexibilization approaches. The outcome of this methodology enables body production planners to derive in which flexibilization approaches to invest and which approaches to discard.
A Cascaded Algorithm Incorporating Knowledge Transfer Q-learning and Interior Point Method for Coordinated Operation of Integrated Energy System
Authors: Jianhua Yuan , Haofei Li , Chenyu Ji , Yu Ji
Published: May 2019

The recent development of the Energy Internet has urged the conventional inefficient utilization of single energy to change towards the more developed energy usage of optimal dispatch of the integrated energy system. In this context, the joint optimization scheduling framework of integrated energy system is established based on the energy hub. Then a typical integrated energy system model is developed considering carbon emission and energy supply costs with valve point effect. To solve this non-linear problem with non-convex, discontinuously differentiable characteristic, the cascaded algorithm combined with the knowledge transfer based Q-learning algorithm and interior point method is applied on the model. Meanwhile, the efficiency is greatly improved by knowledge transfer. Case studies have been carried out on a 33energy hubs test system to verify the effectiveness of the proposed model and algorithm.
Relationship between Spacing Rasio and Stiffness Coefficient by Using Smoothed Particle Hydrodynamics Method to Simulate Water – Solid Interaction
Authors: Wulandari Anisa , Rika R.R Dwinanti , Sjah Jessica , Soeryantono Herr
Published: May 2019

Scouring Phenomenon directly occurs on materials due to the motion of water flow and water borne sediments that researchers in the world continue to investigate. Scouring are then continuously developed in Computational Fluid Dynamics (CFD) to be able to estimate scouring effects by analyzing interaction between fluid and solid. Water and solid interaction can be researched by realizing three dimensional numerical modeling (3D) using Smoothed Particle Hydrodynamics Method which is modeling and visualizing fluid behavior with a Lagrangian approach in particle scale (micro scale), a more particle approach realistic than the grid approach. Using this method, the results of each particle can be reviewed either by their property values or visually so that the results are obtained more representatives. One of the factors affecting fluid-solid modeling is spacing ratio between solid particle and fluid particle. To obtain the correct physical results, it is required to consider the influence of spacing ratio and the value of Stiffness Coefficient (Ks) needed.
Synthesis of AlMgB14: Effect of modes of mechanical activation of the raw powders on the properties of obtained materials
Authors: Nikitin Pavel , Zhukov Ilya , Platov Vladimir
Published: May 2019

In work studies of phase composition, hardness and density of materials based on AlMgB14 synthesized by hot pressing method at temperatures of 1300 and 1400 °C under pressure 50 MPa from aluminum, magnesium and boron powders (E1 mixture), as well as from original powder of aluminum-magnesium alloy (E2 mixture) were conducted. AlMgB14 phase content of obtained bulk samples is ~ 95 wt. %. The maximum hardness of 14GPa and density of 2.1 g/cm3, respectively, has a sample, marked as E1, synthesized at a temperature of 1400 °C.
Investigation of the negative influence of cooling lubricants on the deformation of the machine tool structure
Authors: Brecher Christian , Tzanetos Filippos , Zontar Daniel
Published: May 2019

Cooling lubricants have a significant influence on the thermal state of a machine tool. The fluid absorbs the thermal energy of the cutting process and dissipates it to prevent wear of the tool and distortion of the work piece. However, the unpredictable flow of the cooling lubricant also transfers the energy to the machine tool structure and can thus have a negative impact on the produced work piece quality. While the thermal behaviour of machine tools under the influence of thermal environmental conditions is already the subject of ongoing research projects, the influence of cooling lubricants on the thermal state of the machine tool and thus the achievable manufacturing accuracy is still largely unexplored. This paper investigates the thermally induced deformations of the machine tool structure, as well as the impact on the Tool Centre Point (TCP).
A Tabu-Genetic Hybrid Search Algorithm for Job-shop Scheduling Problem
Authors: Ge Yan , Wang Aimin , Zhao Zijin , Ye Jieran
Published: May 2019

To deal with the job-shop scheduling problem (JSP), a tabu-genetic hybrid search algorithm is proposed. The algorithm generates several initial solutions distributed in the whole solution space for tabu search by genetic algorithm, which avoids the over-dependence on the initial solution of tabu search algorithm. With the mechanism mentioned above, the algorithm proposed has both global search performance of genetic algorithm and local search performance of labu search algorithm. Finally, a program was developed with the achral data of FT (10x 10). to verify the feasibility and effectiveness of the algorithm. The result shows that the algorithm achieves satisfactory results in all indexes mentioned above.
Search for tau neutrinos with the MAGIC telescopes: improving selection criteria*
Authors: Manganaro Marina , Kardum Leonora , Bernardini Elisa , Doro Michele , Gora Dariusz , Micanović Saša , Terzić Tomislav , Will Martin
Published: May 2019

MAGIC, a system of two Cherenkov telescopes located at the Roque de los Muchachos Observatory (2200 a.s.l.) in the Canary Island of La Palma, has lately been engaged in an unconventional task: the search for a signature of particle showers induced by earth-skimming cosmic tau neutrinos arising from the ocean, in the PeV to EeV energy range. When pointing at the sea, the MAGIC telescopes can collect data in a range of about 5 deg in zenith and 80 deg in azimuth: the analysis of the shower images from ~30 hours of data, together with the simulations of upward-going tau neutrino showers, shows that the air showers induced by tau neutrinos can be discriminated from the hadronic background coming from a similar direction. We have calculated the point source acceptance and the expected event rates, assuming an incoming v flux consistent with IceCube measurements, and for a sample of generic neutrino fluxes from photohadronic interactions in AGNs and GRBs. A 90% C.L. upper limit on the tau-neutrino point source flux of 2.0 × 10–4 GeV cm–2 s–1 has been obtained. The presented results can also be important for future Cherenkov experiments such as the Cherenkov Telescope Array. This next generation ground-based observatory can have a much better possibility to detect v, given its larger FOV and much larger effective area.
e- discrimination at high energy in the JUNO detector
Authors: Settanta Giulio , Maria Mari Stefano , Martellini Cristina , Montini Paolo
Published: May 2019

Cosmic Ray and neutrino oscillation physics can be studied by using atmospheric neutrinos. JUNO (Jiangmen Underground Neutrino Observatory) is a large liquid scintillator detector with low energy detection threshold and excellent energy resolution. The detector performances allow the atmospheric neutrino oscillation measurements. In this work, a discrimination algorithm for different reaction channels of neutrino-nucleon interactions in the JUNO liquid scintillator, in the GeV/sub-GeV energy region, is presented. The atmospheric neutrino flux is taken as reference, considering $\mathop {{v_\mu }}\limits^{( - )} $ and $\mathop {{v_e}}\limits^{( - )} $. The different temporal behaviour of the classes of events have been exploited to build a timeprofile-based discrimination algorithm. The results show a good selection power for $\mathop {{v_e}}\limits^{( - )} $ CC events, while the $\mathop {{v_\mu }}\limits^{( - )} $ CC component suffers of an important contamination from NC events at low energy, which is under study. Preliminary results are presented.