Flow behavior was examined for a 1.0 wt % aqueous solution of hydrophobically modified ethoxylated urethane (HEUR; Mw = 4.6 × 104). In the linear viscoelastic regime, exhibited single-Maxwellian attributable to thermal reorganization transient network composed strings HEUR flower micelles. Under shear flow at intermediate rates γ̇ just above equilibrium relaxation frequency 1/τ, thickening characterized by monotonic increase viscosity growth function η+(t;γ̇) with time t η+(t) and...

Experimental Bayesian optimization for Li ion conductivity in NASICON-type LiZr₂(PO₄)₃.

The formation of solid solutions microwave dielectric compounds having compositions in the vicinity Ba 3.75 - R 9.5 Ti 18 O 54 and/or BaO· 2 3 ·4TiO ( =rare earth) has been investigated. 3BaO·2 ·9TiO (Ba 6 8 ) with ideal formulae 6-3 x 8+2 (0.0≤ ≤1.0) have derived on tie line ratio Ti:O=1:3 between perovskite and 9 based new tungsten bronze-type crystal structure 2×2 perovskitelike unit cells. type is substitutional following relation 3Ba 2+ \rightleftarrows2 3+ +\Box. Lattice parameters as...

Angle-resolved inverse photoemission spectroscopy (ARIPES) and angle-resolved secondary-electron emission (ARSEES) have been performed for graphite to establish experimentally the unoccupied-electronic-band structure as well study difference between two techniques. Remarkable differences found in experimental two-dimensional band structures obtained by methods. The results compared with different calculations R. C. Tatar S. Rabii [Phys. Rev. B 25, 4126 (1982)] N. A. W. Holzwarth, G. Louie,...

We consider concentration dependence of rheological properties associative telechelic polymer solutions. Experimental results for model solutions show rather strong properties. For with relatively high concentrations, linear viscoelasticity deviates from the single Maxwell behavior. The characteristic relaxation time and moduli is different in high- low-concentration cases. These suggest that there are two regimes. expect densely connected (well percolated) networks formed high-concentration...

For aqueous solutions of a representative telechelic polymer, hydrophobically modified ethoxylated urethane (HEUR), recent transient network model suggested that sparse and dense HEUR networks are formed at low high concentrations c thereby exhibiting different rheological features [Uneyama, T.; Suzuki, S.; Watanabe, H. Phys. Rev. E2012, 86, 031802]. In this study, we examined those differences for nonlinear behavior (with MHEUR = 4.6 × 104 1–10 wt %) under steady shear 25 °C to test the...

Abstract Although O3‐NaFe 1/2 Mn O 2 delivers a large capacity of over 150 mAh g −1 in an aprotic Na cell, its moist‐air stability and cycle are unsatisfactory for practical use. Slightly Na‐deficient O3‐Na 5/6 Fe (O3‐Na FeMn) 1/3 Me 1/6 (Me = Mg or Cu, O3‐FeMnMe) newly synthesized. The Cu doping provides higher stability. FeMn, O3‐FeMnCu, O3‐FeMnMg deliver first discharge capacities 193, 176, 196 , respectively. Despite partial replacement with redox inactive Mg, oxide ions participate the...

The removal mechanisms of silicate using an aluminum hydroxide co-precipitation process was investigated and compared with adsorption process, in order to establish effective validated method for from wastewater. Adsorption isotherms, XRD FT-IR analyses showed that uptake occurred by boehmite initial Si/Al molar ratios smaller than two, but precipitation poorly crystalline kaolinite the larger both processes. Silicate removed two steps: (i) rapid a few seconds; (ii) slow over several hours...

Lithium intercalation properties of octatitanate synthesized through exfoliation/reassembly process, denoted reassembled-octatitanate, were examined for the first time and compared with those prepared without process. Reassembled-octatitanate was by exfoliation tetrabutylammonium-intercalated tetratitanate compound reassembly obtained nanosheets. The electrochemical activity maintained in reassembled-octatitanate. overvoltage reassembled-octatitanate smaller than that a conventional...

Abstract Metastable Sr 0.5 TaO 3 with a perovskite structure was prepared by using layer‐structured H 2 1.5 Ta O 10 two different processes: direct dehydration and nanosheet processing, the photocatalytic activities of obtained structures were investigated for evolution from distilled water under UV light irradiation. The average gas rates 66 μmol h –1 (H ) 16 (O dehydration, whereas those processing 126 33 ). It shown that is effective obtaining metastable high activities. (© Wiley‐VCH...

Abstract Photosystem II is nature's solution for driving the oxygen evolution reaction to oxidize water. A manganese‐oxide cluster this protein's active center water splitting, while most efficient man‐made catalysts are costly noble metal‐based oxides. Facing climate change, research on affordable and abundant electrocatalysts crucial. To mimic biological solution, manganese oxide nanosheets synthesized deposited highly‐oriented pyrolytic graphite. This electrocatalyst then examined with...

Poly(anthraquinonyl sulfide) (PAQS)/graphene sheets (GSs) composite was synthesized through in situ polymerization to evaluate its performance as an electrode material for electrochemical capacitors. PAQS successfully the presence of GSs with uniform distribution. PAQS/GSs showed a pair reversible redox peaks at around 0 V (vs. Ag/AgCl). The specific capacitance 349 F·g−1 (86 mAh·g−1) current density 500 mA·g−1, and 305 maintained even high 5000 mA·g−1. facilitated their interaction enabled...

This paper studies an entropy-based multi-objective Bayesian optimization (MBO). The entropy search is successful approach to optimization. However, for MBO, existing methods ignore trade-off among objectives or introduce unreliable approximations. We propose a novel MBO called Pareto-frontier (PFES) by considering the of Pareto-frontier, which essential notion optimality problem. Our can incorporate relation optimal values, and further, we derive analytical formula without introducing...

LixLa(1–x)/3NbO3 (LLNO) is an A-site-deficient perovskite material that has a larger unit cell volume, lower La3+ concentration, and higher intrinsic vacancy concentration than (LixLa(2–x)/3TiO3), which known to be one of the fastest Li-ion conductive oxides. These advantages make LLNO potential oxide-based solid electrolyte candidate for all-solid-state batteries. The A-site B-site elements in this perovskite-type can substituted by ions with various charges radii wide range ways form...