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Dispersing and Retarding Properties of Water-Soluble Tetrasulfonate Resorcin[4]arene and Pyrogallol[4]arene Macrocycles in Cement-Based Mortar

Clotilde Capacchione、Davide Picariello、Paolo Della Sala 等 10 位作者2020-07-17ACS Omega

Abstract Water-soluble tetrasulfonate resorcin[4]­arene (1a and 1c) and pyrogallol[4]­arene (1b) macrocycles were synthesized and investigated for their dispersing properties in cement-based mortars. Mortar tests clearly show that these polyhydroxylated macrocycles (nonpolymeric) work as cement dispersants. Setting ti…

Concrete and Cement Materials ResearchCorrosion Behavior and InhibitionPolymer composites and self-healing

Temporal and Bathymetric Variation of Epiphytic Microalgae on Posidonia oceanica (L.) Delile Leaves in Gökçeada (North Aegean, Turkey)

Aysu Güreşen、Sedat Ozan Güreşen、Yelda Aktan2020-07-17Turkish Journal of Fisheries and Aquatic Sciences

Epiphytic microalgae attached to Posidonia oceanica leaves play a significant role through primary production, nutrient cycling and trophic fluxes in benthic ecosystems. Due to their sensitivity, epiphytic microalgae respond to environmental alterations more quickly than their host. The aim of this study is therefore…

Marine and coastal plant biologyMarine Biology and Ecology ResearchDiatoms and Algae Research

An Accurate and Practical Explicit Hybrid Method for the Chan–Vese Image Segmentation Model

Darae Jeong、Sangkwon Kim、Chaeyoung Lee 等 4 位作者2020-07-17Mathematics

In this paper, we propose a computationally fast and accurate explicit hybrid method for image segmentation. By using a gradient flow, the governing equation is derived from a phase-field model to minimize the Chan–Vese functional for image segmentation. The resulting governing equation is the Allen–Cahn equation with…

Solidification and crystal growth phenomenaMathematical Biology Tumor GrowthAdvanced Mathematical Modeling in Engineering

Characteristics of Ultraviolet Photodetector Based on Li-doped ZnO Nanorods

Chun-Chi Chou、Li-Hsing Shih、Shoou‐Jinn Chang2020-07-17Sensors and Materials

In this study, we report one-dimensional Li-doped ZnO nanorods (NRs) fabricated on glass substrates by the hydrothermal method and the fabrication of Li-doped ZnO NR photodetectors. It was found that the as-grown Li-doped ZnO NRs were structurally equivalent to a wurtzite structure. The NRs had average diameters of ~1…

Ga2O3 and related materials

Molecular Design of Double-headed 2-Pyrrolidone Derivatives for Separation/Co-precipitation of UO22+ from/with Tetravalent Actinides towards Nuclear Fuel Recycling

Hiroyuki Kazama、Koichiro Takao2020-07-17Chemistry Letters

Two kinds of novel double-headed 2-pyrrolidone derivatives (DHNRPs) were designed for efficient recovery of UO22+ from HNO3 (aq) and its separation from tetravalent metal ions (M4+). The DHNRPs bearing butylene or p-xylylene bridging moiety have successfully precipitated sparingly soluble [UO2(NO3)2(DHNRP)]n, while th…

Radioactive element chemistry and processingNuclear Materials and PropertiesChemical Synthesis and Characterization

Effect of visible light irradiation on catalytic activity of gold nanoparticles and perylene adsorbed on silica gel

Hiroshi Moriwaki、Mahiro Oshima2020-07-17Catalysis Communications

A novel visible-light-responsive photocatalyst consisting of gold nanoparticles and perylene adsorbed on silica gel (Au/Pe/SiO2) has been developed. By comparing the reduction of an environmental pollutant in the presence of Au/Pe/SiO2 and sodium borohydride by visible light irradiation to that in the dark, the effect…

Advanced Photocatalysis TechniquesCopper-based nanomaterials and applicationsNanomaterials for catalytic reactions

Evaluation of the chitinase activity in papaya fruit at different phenological stages as a possible biomarker for the detection of Colletotrichum gloeosporioides infection

Jesús Armando Lucas-Bautista、Rosa Isela Ventura‐Aguilar、Silvia Bautista‐Baños 等 5 位作者2020-07-17Current Plant Biology

Worldwide, papaya is a highly consumed fruit; however, they are very susceptible to the attack of the fungus Colletotrichum gloeosporioides. The fungal cell wall has mostly chitin, which is degraded by the chitinases enzymes that are synthesized as part of the plant's defence system. For diagnose a fungal disease, it…

Nanocomposite Films for Food PackagingStudies on Chitinases and ChitosanasesPineapple and bromelain studies

Less can be more in functional materials

Nazanin Bassiri‐Gharb2020-07-17Science

Nanopillar defects in NaNbO 3 induce a large piezoelectric response at high electric fields

Ferroelectric and Piezoelectric MaterialsElectronic and Structural Properties of OxidesFerroelectric and Negative Capacitance Devices

β-Lactoglobulin Adsorption Layers at the Water/Air Surface: 4. Impact on the Stability of Foam Films and Foams

Georgi Gochev、V. Ulaganathan、I. Retzlaff 等 9 位作者2020-07-17Minerals

The complexity and high sensitivity of proteins to environmental factors give rise to a multitude of variables, which affect the stabilization mechanisms in protein foams. Interfacial and foaming properties of proteins have been widely studied, but the reported unique effect of pH, which can be of great interest to ap…

Proteins in Food SystemsPolymer Surface Interaction StudiesPickering emulsions and particle stabilization

Water vapor permeability and self‐cleaning properties of solvent‐free polyurethane improved by hollow nano‐TiO2 spheres

Xu Guo、Bin Lyu、Dangge Gao 等 10 位作者2020-07-17Journal of Applied Polymer Science

Abstract In the synthetic leather industry, solvent‐free polyurethane film (SFPU) was poor in water vapor permeability (WVP) and washability. In this study, we introduced the hollow nano‐TiO2 spheres (HNTSs) with high photocatalytic performance and permeability performance as well as large surface area into the SFPU f…

Polymer composites and self-healingMarine Biology and Environmental ChemistrySilicone and Siloxane Chemistry

Metallostar Assemblies Based on Dithiocarbamates for Use as MRI Contrast Agents

Hannah L. Perry、Il‐Chul Yoon、Nicolas G. Chabloz 等 7 位作者2020-07-17Inorganic Chemistry

Two different octadentate gadolinium chelates based on DO3A and DOTAGA chelates (hydration number q = 1) have been used to prepare a series of bi-, tri-, and tetrametallic d–f mixed-metal complexes. The piperazine-based dithiocarbamate linker ensures that rotation of the gadolinium chelates is restricted, leading to e…

Advanced MRI Techniques and ApplicationsMagnetism in coordination complexesLanthanide and Transition Metal Complexes

Structural, elastic, vibrational, thermophysical properties and pressure-induced phase transitions of ThN2, Th2N3, and Th3N4: An ab initio investigation

B. D. Sahoo、K. D. Joshi、T. C. Kaushik2020-07-17Journal of Applied Physics

The structural, electronic, elastic, lattice dynamical properties and pressure-induced phase transitions in ThN2, Th2N3, and Th3N4 have been investigated through density functional theory based electronic band structure calculations. Our theoretical calculations on ThN2 reveal the monoclinic structure (C2/m space grou…

High-pressure geophysics and materialsBoron and Carbon Nanomaterials ResearchInorganic Chemistry and Materials

Graphitic Carbon Nitride/Copper‐Iron Oxide Composite for Effective Fenton Degradation of Ciprofloxacin at Near‐Neutral pH

Qiqi Ding、Wasim Ullah Khan、Frank Leung‐Yuk Lam 等 7 位作者2020-07-17ChemistrySelect

Abstract In this work, graphitic carbon nitride/copper‐iron oxide (CN@CIO) composites were prepared via in‐situ thermal condensation of dicyandiamide onto CIO. The activity of the as‐prepared catalyst to degrade ciprofloxacin (CIP) was investigated systematically in the dark Fenton reaction. With the increase in the c…

Advanced Photocatalysis TechniquesAdvanced oxidation water treatmentCovalent Organic Framework Applications

Biomimetic Mesoporous Cobalt Ferrite/Carbon Nanoflake Helices for Freestanding Lithium‐Ion Battery Anodes

Nhan Thi Thanh Dang、Thanh‐Dinh Nguyen、Erlantz Lizundia 等 5 位作者2020-07-17ChemistrySelect

Abstract Structural biomimicry is a fascinating concept to explore hierarchically organized nanomaterials for mechanical structures, catalysis, sensing, and energy storage applications. Here we report the fabrication of biomimetic mesoporous cobalt ferrite/carbon nanoflake materials with helical morphologies and evalu…

Advancements in Battery MaterialsSupercapacitor Materials and FabricationAdvanced Battery Materials and Technologies

Analysis of Electrical Characteristics of Pd/n-Nanocarbon/p-Si Heterojunction Diodes: By C-V-f and G/w-V-f

Abdelrahman Zkria、Eslam Abubakr、Phongsaphak Sittimart 等 4 位作者2020-07-17Journal of Nanomaterials

Diamond films are candidate for a wide range of applications, due to their wide band gap, high thermal conductivity, and chemical stability. In this report, diamond-based heterojunction diodes (HJDs) were fabricated by growing n-type nanocarbon composite in the form of nitrogen-doped ultrananocrystalline diamond/amorp…

Metal and Thin Film MechanicsSemiconductor materials and devicesDiamond and Carbon-based Materials Research

Degradation of 2,4-dichlorophenol by cathodic microarc plasma electrolysis: characteristics and mechanisms

Yifan Zhang、Jiahao Yu、Guijun Liu 等 7 位作者2020-07-17Environmental Technology

In this work, we used cathodic microarc plasma electrolysis (CMPE) to degrade 2,4-dichlorophenol (2,4-DCP) in simulated wastewater. By investigating and comparing the removal efficiencies and chemical oxygen demand (COD) during the degradation process, higher bath voltage and alkaline condition were considered as more…

Catalytic Processes in Materials SciencePlasma Applications and DiagnosticsElectrohydrodynamics and Fluid Dynamics

Identification of an α‑MoRF in the Intrinsically Disordered Region of the Escargot Transcription Factor

Teresa Hernández-Segura、Nina Pastor2020-07-17ACS Omega

Abstract Molecular recognition features (MoRFs) are common in intrinsically disordered proteins (IDPs) and intrinsically disordered regions (IDRs). MoRFs are in constant order–disorder structural transitions and adopt well-defined structures once they are bound to their targets. Here, we study Escargot (Esg), a transc…

Protein Structure and DynamicsRNA and protein synthesis mechanismsEnzyme Structure and Function

Preparation, photoluminescence and semiconductive band gap of a gadolinium compound

Wen‐Tong Chen2020-07-17Inorganic and Nano-Metal Chemistry

A new compound [Gd(H2O)4(HIA)2(NO3)](2NO3) (1; HIA is isonicotinic acid) is reported. The Gd3+ cation is coordinated by eight oxygen atoms and exhibit a square antiprismatic GdO8 geometry. A three-dimensional (3-D) supramolecular framework is formed by hydrogen bond interactions. The photoluminescence absorption peak…

Metal-Organic Frameworks: Synthesis and ApplicationsLuminescence Properties of Advanced MaterialsCrystal Structures and Properties

Additive manufacturing and characterization of AgI and AgI–Al2O3 composite electrolytes for resistive switching devices

Benjamin J. Brownlee、Lok‐kun Tsui、Karthik Vempati 等 7 位作者2020-07-17Journal of Applied Physics

This work investigates the electrochemical dynamics and performance of additively manufactured composite electrolytes for resistive switching. Devices are comprised of a Ag/AgI–Al2O3/Pt stack, where the solid state electrolyte is additively manufactured using extrusion techniques. AgI–Al2O3 composite electrolytes are…

Advanced Memory and Neural ComputingConducting polymers and applicationsFerroelectric and Negative Capacitance Devices

Crystal structure of a novel one-dimensional zigzag chain-like cobalt(II) coordination polymer constructed from 4,4′-bipyridine and 2-hydroxybenzoate ligands

Thawanrat Saelim、Kittipong Chainok、Filip Kielar 等 4 位作者2020-07-17Acta Crystallographica Section E Crystallographic Communications

A novel one-dimensional zigzag chain-like CoII coordination polymer constructed from 4,4′-bipyridine (4,4′-bpy) and 2-hydroxybenzoate (2-OHbenz) ligands, namely, catena-poly[[(4,4′-bipyridine-κN)(μ-2-hydroxybenzoato-κ2 O:O′)(2-hydroxybenzoato-κ2 O,O′)cobalt(II)]-μ-4,4′-bipyridine-κ2 N:N′-[aquahemi(μ-4,4′-bipyridine-κ2…

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