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The bioactivity of titanium-cuttlefish bone-derived hydroxyapatite composites sintered at low temperature

Anamarija Rogina、Ivona Košić、Maja Antunović 等 5 位作者2020-08-07Powder Metallurgy

The most limiting features of titanium as a bone substituent are lack of bioactivity and high Young’s modulus. We have prepared titanium-hydroxyapatite (Ti-HAp) composites using titanium hydride as sintering agent to provide titanium sintering at lower temperature and preserve the stability of apatite phase. After low…

Bone Tissue Engineering MaterialsOrthopaedic implants and arthroplastyTitanium Alloys Microstructure and Properties

Theoretical Study on Singlet Fission Dynamics in Sumanene-Fused Acene Dimers

K. Okada、Masayoshi Nakano、Hajime MIYAMOTO 等 6 位作者2020-08-07The Journal of Physical Chemistry C

We investigate the potential of sumanene-fused acenes as a novel class of highly efficient singlet fission (SF) candidates by density functional theory (DFT) calculations and exciton dynamics simulations using the quantum master equation. The DFT calculations have revealed that fusion of sumanene to oligoacenes enable…

Advanced Chemical Physics StudiesFullerene Chemistry and ApplicationsBoron and Carbon Nanomaterials Research

Bimetallic Rod‐Packing Metal–Organic Framework Combining Two Charged Forms of 2‐Hydroxyterephthalic Acid

Fang Peng、Huajun Yang、Anthony Hernandez 等 6 位作者2020-08-07Chemistry - A European Journal

Abstract Although many rod‐packing metal‐organic frameworks are known, few are based on ordered heterometallic rod building unit. We show here the synthesis of CPM‐76 based on an unprecedented Zn‐Mg bimetallic rod with crystallographically distinguishable metal sites. The configuration of the rod offers two types of c…

Metal-Organic Frameworks: Synthesis and ApplicationsMetal complexes synthesis and propertiesMagnetism in coordination complexes

Protection of Wood from Burning with Paints on Alkaline Aluminosilicates-Based

Sergii Guzii、Ihar Bazhelka、Nataliia Svitlychna 等 4 位作者2020-08-07Materials science forum

The aim of the work was to determination the combustibility group of color fire retardant paints for wood. As a result of the fire tests, it was found that the developed compositions of fire-retardant mineral paints on an alkaline aluminosilicate binder in the (Na, K)2O-Al2O3-nSiO2-mH2O system are difficult to combust…

Fire dynamics and safety researchFlame retardant materials and propertiesEnvironmental and Industrial Safety

Passively Q-switched Er:Lu2O3 laser at 2.8 µm with TiC saturable absorber

Chenyang Feng、Baomin Ma、Wenchao Qiao 等 10 位作者2020-08-07Applied Optics

Titanium carbide (TiC) nanosheets of two-dimensional multilayer structure were prepared by the liquid-phase exfoliation method. By using the TiC as a saturable absorber, a stable passively Q -switched E r : L u 2 O 3 laser at 2.85 µm was realized. Under an absorbed pump power of 7.32 W, the obtained maximum output pow…

Diamond and Carbon-based Materials ResearchAdvanced Fiber Laser TechnologiesSolid State Laser Technologies

High-pressure phase transformation of carbonate malachite Cu2(CO3)(OH)2 driven by [CuO6] regularization and [CO3] rotation

Jing Gao、Xueyin Yuan、Bin Chen 等 5 位作者2020-08-07Geoscience Frontiers

High-pressure synchrotron X-ray diffraction and infrared absorption spectroscopy have been employed to study the crystal chemistry and phase transitions in an [OH]-bearing carbonate, malachite Cu 2 (CO 3 )(OH) 2 , to determine the effect of [OH] on the stability of carbonate. We found that the crystal structure of mal…

Geological and Geochemical AnalysisHigh-pressure geophysics and materialsX-ray Diffraction in Crystallography

Compressive Strength Performance of Reactive Powder Concrete Using Different Types of Materials as a Partial Replacement of Fine Aggregate

Shatha D. Mohammed、Hadeel K. Awad、Rawaa K. Aboud2020-08-07Key engineering materials

Reactive Powder Concrete (RPC) can be incorporate as a one of the most important and progressive concrete technology. It is a special type of ultra-high strength concrete (UHSC) that’s exclude the coarse aggregate from its constitutive materials. In this research an experimental study had been carried out to investiga…

Concrete and Cement Materials ResearchInnovative concrete reinforcement materialsMagnesium Oxide Properties and Applications

Majorana bound states in topological insulators with hidden Dirac points

Ferdinand Schulz、Kirill Plekhanov、Daniel Loss 等 4 位作者2020-08-07Physical Review Research

The work investigates topologically nontrivial bound states, based on highly hybridized edge states of a topological insulator. The authors show that well-defined Majorana bound states can be obtained in materials with a hidden Dirac point in the presence of a magnetic strip of width comparable to the localization len…

Quantum and electron transport phenomenaTopological Materials and PhenomenaChemical and Physical Properties of Materials

Study of the microstructure and the optical, electrical, and magnetic feature of the Dy2Bi2Fe4O12 ferromagnetic semiconductor

J.A. Nieto Camacho、Jorge Andres Cardona Vasquez、Armando Sarmiento Santos 等 5 位作者2020-08-07Journal of Materials Research and Technology

With the aim to produce a material with magnetic and semiconductor properties, a lanthanide bismuth-ferrite type material is proposed in this work. Polycrystalline samples of Dy2Bi2Fe4O12 were produced following the standard solid-state reaction method. Structural characterization through the X-ray diffraction techniq…

Magnetic and transport properties of perovskites and related materialsMultiferroics and related materialsMagneto-Optical Properties and Applications

Ultrafast Energy Transfer in Fully Conjugated Thiophene-Benzothiadiazole Capped Poly(Phenylene Ethynylene) Molecular Wires

Robert J. Dillon、Zhenxing Pan、Junlin Jiang 等 6 位作者2020-08-07The Journal of Physical Chemistry C

Energy transfer was explored in a series of poly(phenylene ethynylene) (PPE) polymers with increasing lengths that were end-capped with thiophene-benzothiadiazole (TBT) groups to form fully conjugated donor–acceptor polymers. For the polymers in solution, ultrafast transient absorption and time-resolved fluorescence s…

Organic Electronics and PhotovoltaicsOrganic Light-Emitting Diodes ResearchLuminescence and Fluorescent Materials

Enhanced Thermostability and Enzymatic Activity of cel6A Variants from Thermobifida fusca by Empirical Domain Engineering

Imran Ali、Hafiz Muzzammel Rehman、Muhammad Usman Mirza 等 11 位作者2020-08-07Biology

Cellulases are a set of lignocellulolytic enzymes, capable of producing eco-friendly low-cost renewable bioethanol. However, low stability and hydrolytic activity limit their wide-scale applicability at the industrial scale. In this work, we report the domain engineering of endoglucanase (cel6A) of Thermobifida fusca…

Biofuel production and bioconversionAdvanced Cellulose Research StudiesCatalysis for Biomass Conversion

Yolk–Shell Fe3O4@Void@N‐Carbon Nanostructures Based on One‐Step Deposition of SiO2 and Resorcinol‐3‐Aminophenol‐Formaldehyde (R‐APF) Cocondensed Resin Dual Layers onto Fe3O4 Nanoclusters

Kesong Tian、Junyan Wang、Wanchun Guo 等 7 位作者2020-08-07Macromolecular Rapid Communications

Abstract Yolk–shell magnetic nanoparticles@nitrogen‐enriched Carbon nanostructures with a magnetic core and a hollow nitrogen‐enriched carbon shell exhibit considerable promise in various applications, such as drug delivery, heterogenous catalysts, removal of metal ions and organic pollutants, and screening of biomole…

Graphene research and applicationsSupercapacitor Materials and FabricationNanomaterials for catalytic reactions

Effect of the Gallium and Vanadium on the Dibenzothiophene Hydrodesulfurization and Naphthalene Hydrogenation Activities Using Sulfided NiMo-V2O5/Al2O3-Ga2O3

Esneyder Puello-Polo、Yina Pájaro、Edgar Márquez2020-08-07Catalysts

The effect of Ga and V as support-modifier and promoter of NiMoV/Al2O3-Ga2O3 catalyst on hydrogenation (HYD) and hydrodesulfurization (HDS) activities was studied. The catalysts were characterized by elemental analysis, textural properties, XRD, XPS, EDS elemental mapping and High-resolution transmission electron micr…

Catalytic Processes in Materials ScienceCatalysis and Hydrodesulfurization StudiesCatalysis and Oxidation Reactions

Research on Shape Control Characteristics of Non-oriented Silicon Steel for UCMW Cold Rolling Mill

Hao Tao、Hongbo Li、Jian Shao 等 6 位作者2020-08-07Metals

In order to analyze the flatness control characteristics for a certain UCMW (Universal Crown Mill with Work roll shifting) cold rolling mill, combined with the actual parameters in the field, a static simulation model of the quarter roll systems of the UCMW cold rolling mill was established by the ANSYS finite element…

Microstructure and Mechanical Properties of SteelsMetallurgy and Material FormingMetal Alloys Wear and Properties

Flower-like S-doped-Ni 2 P mesoporous nanosheet-derived self-standing electrocatalytic electrode for boosting hydrogen evolution

L. L. D. Thi、P.N.K. Tuyen、Thien Y Vu2020-08-07Nanotechnology

Developing cost-effective, highly active, and stable electrocatalysts for boosting electrochemical hydrogen evolution reaction (HER) in alkaline media is playing a critical role to meet hydrogen industry in the future. Herein, an efficient HER electrocatalyst based on flowerlike S-doped Ni2P mesoporous nanosheets supp…

Electrocatalysts for Energy ConversionSupercapacitor Materials and FabricationAdvanced battery technologies research

Theoretical study on the anomalies of the magnetic susceptibility in the honeycomb lattice compound Na2Co2TeO6

Yuliang Mao、Yize Li2020-08-07Physical review. B./Physical review. B

In this paper, based on ab initio molecular dynamics and the exchange-interaction model, the magnetic order transition phenomenon of ${\mathrm{Na}}_{2}{\mathrm{Co}}_{2}\mathrm{Te}{\mathrm{O}}_{6}$ material under different temperatures is investigated. Our results exclude the effect of lattice distortion as a factor fo…

Physics of Superconductivity and MagnetismMagnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter Physics

Theoretical Framework of a Polydisperse Cell Filtration Model

Yujun Wang、Jian Gong、Changsheng Su 等 7 位作者2020-08-07Environmental Science & Technology

Filtration via a porous medium is a ubiquitous process where high-fidelity physical models are needed. The classical cell model oversimplifies the filtration medium and results in biased and inaccurate predictions of the filter performance. This paper presents the discrete framework of a polydisperse cell model that c…

High voltage insulation and dielectric phenomenaLattice Boltzmann Simulation StudiesAerosol Filtration and Electrostatic Precipitation

Open questions in transplutonium coordination chemistry

Korey P. Carter、Roger M. Pallares、Rebecca J. Abergel2020-08-07Communications Chemistry

Over the past decade, momentous progress has been made in the characterization of late actinide compounds. Here the authors highlight how advances in spectroscopic and computational tools have developed our understanding of fundamental transplutonium bonding interactions, and discuss whether covalency and heterogeneit…

Radioactive element chemistry and processingRadioactive contamination and transferLanthanide and Transition Metal Complexes

Impact of chitosan membrane culture on the expression of pro‑ and anti‑inflammatory cytokines in mesenchymal stem cells

Yi Peng、Xiongfeng Xu、Bo Qiu 等 4 位作者2020-08-07Experimental and Therapeutic Medicine

Osteoarthritis (OA) is a chronic inflammatory joint condition caused by various inflammatory cytokines. The pro‑inflammatory cytokines controlling OA include interleukin (IL)‑1β, tumor necrosis factor (TNF)‑α, IL‑6 and IL‑18. The anti‑inflammatory cytokines include IL‑4, IL‑10, IL‑13, leukemia inhibitory factor (LIF),…

Osteoarthritis Treatment and MechanismsMesenchymal stem cell researchSilk-based biomaterials and applications

Stereoisomerism as an Origin of Different Reactivities of Ir(III) PC(sp3)P Pincer Catalysts

Vladislava A. Kirkina、Gleb A. Silantyev、Sophie De‐Botton 等 10 位作者2020-08-07Inorganic Chemistry

Two stereoisomers of pentacoordinate iridium(III) hydridochloride with triptycene-based PC(sp 3 )P pincer ligand (1,8-bis(diisopropylphosphino)triptycene), 1 and 2, differ by the orientation of hydride ligand relative to the bridgehead ring of triptycene. According to DFT/B3PW91/def2-TZVP calculations performed, an eq…

Organometallic Complex Synthesis and CatalysisCatalytic Processes in Materials ScienceAsymmetric Hydrogenation and Catalysis