Materials Literature
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Cerium oxide nanoparticles have oxygen defects in their lattice structure that enables them to act as a regenerative free radical scavenger in a physiological environment. We performed a comprehensive in vivo analysis of the biological distribution and antioxidant capabilities of nanoceria administered to mice peroral…
Antioxidant therapy is the novel frontier to prevent and treat an impressive series of severe human diseases, and the search for adequate antioxidant drugs is fervent. Cerium oxide nanoparticles (nanoceria) are redox-active owing to the coexistence of Ce(3+) and Ce(4+) oxidation states and to the fact that Ce(3+) defe…
The electric field effect in ferromagnetic semiconductors enables switching of the magnetization, which is a key technology for spintronic applications. We demonstrated electric field-induced ferromagnetism at room temperature in a magnetic oxide semiconductor, (Ti,Co)O(2), by means of electric double-layer gating wit…
Solid state electric field‐assisted diffusion has been widely applied to oxide glasses to make buried waveguides but rarely employed in chalcogenide glasses. We have previously fabricated Ag ‐doped Ge 20 Ga 5 Sb 10 S 65 glasses by electric field‐assisted diffusion and studied the Ag + concentration profiles. However,…
Abstract Novel carbon material with hierarchical porous network structures was made by a method of transformed in situ route based on eggshell membrane (ESM) under inert atmosphere. The structural, physical, and chemical properties were characterized by scanning electron microscopy, Brunauer‐Emmett‐Teller, and UV–visi…
The accurate measurement of rock dynamic mechanical properties has always been a very important task for a variety of rock engineering and geophysical applications, which include quarrying, drilling, rock bursts, blasts, earthquakes, and projectile penetrations. In these applications, the rock materials are subjected…
The advanced mathematical model of Solid Oxide Fuel Cell (SOFC) is presented. Electrochemical, thermal, electrical and flow parameters are collected in the 0D mathematical model. The aim was to combine all cell working conditions in the lowest number of readily determined factors possible. A validation process for var…
본 연구에서는 마이크로 입자의 셀룰로오스를 1,400 bar의 압력에서 고압 호모지나이저(high-pressure homogenizer)를 이용하여 직경이 약 50~100 nm의 셀룰로오스 나노섬유를 제조하였다. 나노섬유 현탁액을 감압 여과하여 고강도 나노종이를 제조하였다. 용매 및 필름캐스팅법을 이용하여 나노섬유를 hydroxypropyl cellulose (HPC)와 polyvinyl alcohol (PVA) 수지에 보강 및 분산시켜 복합필름을 제조하였다. 고압 호모지나이저 통과 횟수를 2, 4, 6, 8까지 점점 증가시켰을 때, 나노종이의 인장강도가 매우 높았…
The interaction of poly(methylaminophosphazene) hydrochloride (PMAP·HCl) of varying degrees of ionization (f) with the potassium salt of ι-carrageenan was studied by high-sensitivity differential scanning calorimetry at a KCl concentration of 0.15 M, which is included for the purpose of stabilizing the helix conformat…
A cationic porphyrin–anthraquinone hybrid and its Zn(II), Cu(II), Co(III), and Mn(III) complexes were synthesized and their interactions with duplex DNA were studied using a combination of absorption, fluorescence titration, circular dichroism spectroscopy, thermal DNA denaturation, viscosity measurements, gel electro…
Abstract Two kinds of oppositely charged polystyrene ionomers bearing the bulky and lipophilic phosphazenium cation or diborateimidazolide anion that are soluble and dissociated partially into ions even in nonpolar solvents were prepared. Alternate complexes of them were fabricated in less-polar solvent, acetone, laye…
A new nonlinear optical chromophore with strong electron‐withdrawing acceptor and rigid–flexible dendron was synthesized. An electro‐optic (EO) attenuated total reflectance modulator was prepared to measure the EO coefficient of the films. Modification of the tricyanopyrroline chromophore with rigid–flexible dendron g…
The proton conducting material Ba(3)Ca(1.18)Ta(1.82)O(8.73) (BCT18) was synthesized and characterized using diffraction methods and thermal analysis. It was shown that BCT18 is structurally similar to its niobium analogue (BCN18). At synthesis temperatures up to 1500 °C however, BCT18 forms a mixture of Ca- and Ta-sit…
Understanding and controlling the interactions between nanoparticles and living cells are of great importance in the diagnosis and therapeutic applications of nanosized materials. This article describes the synthesis, characterisation and interactions of gold nanoparticles (AuNPs) with different in vitro and in vivo e…
The split Hopkinson pressure bar has been a very popular and promising experimental technique for the study of dynamic behaviours of metallic materials for its easy operation and relatively accurate results, with three basic assumptions (Davies and Hunter, 1963; Bazle, Sergey and John, 2004): (a) waves propagating in…
The giant basal spicule of the hexactinellid sponge Monorhaphis chuni represents the longest natural siliceous structure on Earth. This spicule is composed of concentrically arranged lamellae that are approximately 10 μm thick. In the present study, we investigated the formation of outer lamellae on a cellular level u…
Space-group symmetry operations are given a geometric description and a short-hand matrix notation in International Tables for Crystallography, Volume A, Space-Group Symmetry. We give here the space-group symmetry operations subtables with the corresponding Seitz (R∣t) notation for each included symmetry operation.
Superconductivity in the Bechgaard salts series of quasi-one-dimensional organic conductors occurs on the verge of spin-density-wave ordering when hydrostatic pressure is applied. The sequence of instabilities is intimately connected to normal state anomalies in various quantities like the temperature dependence of el…
Ca(2+)-ATPases are ATP-driven membrane pumps that are responsible for the transport of Ca(2+) ions across the membrane. The Listeria monocytogenes Ca(2+)-ATPase LMCA1 has been crystallized in the Ca(2+)-free state stabilized by AlF(4)(-), representing an occluded E2-P(i)-like state. The crystals belonged to space grou…
Two new tetradentate Schiff bases, in which two identical aromatic bent core mesogenic units containing phenylazo are connected via a 1,2-phenylene spacer, N,N′-di-(5-(4-alkoxyphenyl)azo)-salicylidene-1,2-phenylene diimine (alkoxy = decyloxy, dodecyloxy), and their copper(II) complexes were synthesized and studied for…