In this study, a memristor with the simple structure Ag/poly(3,4-ethylenedioxythiophene):poly (styrenesulphonate) (PEDOT:PSS)/Ta was fabricated. Essential synaptic plasticity and learning behaviours were emulated using memristor, including short-term plasticity, long-term spike-timing-dependent spike-rate-dependent plasticity. Important time constants extracted from these modifications, which are associated brain memory functions. It clearly demonstrated that movement of Ag interface upon...

A graphdiyne nanosheet/Pt nanoparticle composite shows outstanding catalytic activity for the reaction of I3−/I− redox pairs, i.e., best among rGO/Pt composites, Pt nanoparticles and foils. This is ascribed to enhanced electron transfer resulting from easier chemical interaction between triple bond graphdiyne.

Herein, ultra-small NiFe2O4 hollow particles, with the diameter and wall thickness of only 6 1.8 nm, respectively, were anchored on a graphene surface based nanoscale Kirkendall effect. The hybrid exhibits an excellent electromagnetic wave absorption property, comparable or superior to that most reported absorbers. Our strategy may open way grow particles for applications in many fields such as eletromagnetic energy storage conversion.

Chiral variants of the prototypal metal–organic framework MOF-5, Λ-CMOF-5 and Δ-CMOF-5, have been synthesized by preparing MOF-5 in presence l-proline or d-proline, respectively. CMOF-5 crystallizes chiral space group P213 instead Fm3̅m as exhibited MOF-5. The phase purity was validated single-crystal powder X-ray diffraction, infrared spectroscopy, thermogravimetric analysis, N2 adsorption, microanalysis, solid-state vibrational circular dichroism. undergoes a reversible single...

The electrocaloric effect (ECE) of BaTiO3 multilayer thick film was investigated by direct calorimetric measurement. ECE increases monotonically with the enhancement applied field. maximum occurs above Tc and shifts to higher temperature increasing Under an ultrahigh field 800 kV/cm, it exhibits a giant ΔT = 7.1 K ΔS 10.1 J/kg · at 80 °C. heat follows general power-law relation varying rate within certain range. A high cooling power (∼50 W/kg) is achieved based on net-cooling resulting from...

A large ionic water cluster H(H2O)28+, consisting of a shell (H2O)26 and an encaged species H(H2O)2+ as center core, was trapped in the well-modulated cavity porous metal−organic framework (MOF) {[Co4(dpdo)12(PMo12O40)3]−}∞ structurally characterized. Degeneration protonated H(H2O)28+ into smaller H(H2O)21+ recovery from resulting reversible way demonstrated unusual stability clusters robust crystal host. Proton transport proton/potassium ion exchange through channels host have been...

This paper presents a systematic exploration of modifying the electrocaloric effect (ECE) in BaTiO₃ceramics by rare-earth substitution (Ba_0.94R_0.04TiO₃, R = La, Ce, Nd, Sm, Eu, Gd, Dy, Er).

Metformin, a first-line antidiabetic drug used by millions of patients, has been shown to have potential osteogenic properties. The present study was performed test the hypothesis that clinically relevant doses metformin promote differentiation and mineralization induced pluripotent stem cell-derived mesenchymal cells (iPSC-MSCs). iPSC-MSCs were treated with (10 μm) assess cell viability, differentiation, activation LKB1/AMP-activated protein kinase (AMPK) signalling pathway, surrogate...

Herein, we report three-dimensional (3D) urchin-like amorphous nitrogen-doped CNT (NCNT) arrays with embedded cobalt-nickel@graphene core@shell nanoparticles (NPs) in the inner parts of NCNTs (CoNi@G@NCNTs) for highly efficient absorption toward microwave (MW). The CoNi NPs are covered about seven layers graphene shell, resulting formation CoNi@G core-shell structures. In meanwhile, further encapsulated within NCNTs. Benefitting from multiple scattering unique 3D structure MW, cooperative...

The purpose of this study was to evaluate the feasibility and applicability object-oriented crop classification using Sentinel-1 images in Google Earth Engine (GEE). In study, two areas (Keshan farm Tongnan town) with different average plot sizes Heilongjiang Province, China, were selected. research time consecutive years (2018 2019), which used verify robustness method. growth period (May September) each area composited three intervals (10 d, 15 d 30 d). Then, composite segmented by simple...

Consolidated bioprocessing (CBP) has attracted increasing attention since it can accomplish hydrolytic enzymes production, lignocellulose degradation and microbial fermentation in one single step. Currently, biobutanol is mainly produced by mesophilic solventogenic clostridia, such as Clostridium beijerinckii C. acetobutylicum, which cannot directly utilize lignocellulose, an abundant, renewable economic feedstock. Hence, metabolic construction or isolation of novel...

Polarization variation in a thermal cycle and <italic>in situ</italic> HT <italic>d</italic>₃₃ revealed real depolarization temperature distinct recovery.

Larger-scale usage of the clean energies requires advanced energy storage and conversion techniques. Overall water splitting zinc air systems are promising means, but need high-performance, low-cost, highly stable bifunctional electrocatalysts to hydrogen evolution/oxygen evolution reactions (HER/OER) OER/oxygen reduction (ORR), respectively. Herein we develop a facile method fabricate CoMn double hydroxide (DH) hollow spheres as high-performance trifunctional for overall zinc-air battery....

Pentacene thin film transistors (TFTs) were fabricated by the organic molecular beam deposition method. The TFTs characterized in order to study effect of thermal annealing on morphology and carrier mobility transistors. For all TFT samples exhibited an Arrhenius relationship with temperature, indicating a thermally activated transport that could be explained trap release mechanism. Therefore, investigate effect, we tested data for significant period time after until temperature recovered...

SUMMARY Quercetin, one of the most abundant natural flavonoids, has been reported to modulate activity several drug‐metabolising enzymes. The aim present study was investigate effects quercetin on cytochrome P450 (CYP) 1A2, CYP2A6, N ‐acetyltransferase (NAT2) and xanthine oxidase (XO) in healthy volunteers using caffeine as a probe drug. Twelve unrelated, were recruited study. There two phases study; first phase, each subject given single oral dose (one 100 mg capsule) with 150 mL water;...

A low sintering temperature microwave dielectric material ZnZrNb 2 O 8 was reported. It exhibits a monoclinic structure, belongs to the space group P 2/ c ( C h 4 ), and Z = 1. The constant increased with increasing relative density. Qf value packing fraction. τ f constant. typical values of were ε 30, 61 000 GHz, =−52 × 10 −6 °C −1 , sintered at 950°C.

A resistive switching (RS) device of Ti/PEDOT:PSS/Ti, which is favourable for simulating learning processes, was made in this study. The conventional synaptic potentiation, depression plasticity and spike-timing-dependent plasticity, widely studied neuroscience, were realized RS system. Our cell can be potentiated under moderate stimulation, but intensive or strong stimulation will trigger the mechanism without changing bias sign. characterizations chemical state suggest that Ti compound...

Ultrathin films of the ferroelectric polymer poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] have recently attracted intensive research interest due to their potential applications in emerging organic devices. As special geometry confinement systems, many aspects about processing, microstructure, and performance are far from being well understood. Here, cooperative molecular orientation, macroscopic properties, nanoscale polarization switching behaviors thermally crystallized...

The correlation of the electronic band structure with photocatalytic activity AgTaO3 has been studied by simulation and experiments. Doping wide gap oxide semiconductors usually introduces discrete mid-gap states, which extends light absorption but limited benefit for activity. Density functional theory (DFT) calculations show that compensated co-doping in can overcome this problem increasing simultaneously improving charge carrier mobility. N/H N/F delocalize states created sole N doping...