Materials Literature
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Nephrogenic systemic fibrosis (NSF) is a painful and debilitating fibrosing disorder of the skin and systemic tissues. It is associated with exposure to Gd, used in MRIs and MRAs, in patients with renal insufficiency. We here present an illustrative example of a young patient who underwent multiple Gd-enhanced scans,…
The equilibrium and kinetics of hydrogen storage on Pt nanoparticles doped on AX-21 superactivated carbon were studied. The Pt/AX-21 sample was prepared by ultrasound-assisted impregnation of H 2 PtCl 6 in a solution of acetone. The dispersion of platinum was determined by CO/H 2 chemisorption and high-resolution tran…
We report on the structural, electrical, and optical properties of 5% niobium doped TiO2 thin films grown on various substrates by pulsed laser deposition. The epitaxial anatase Nb:TiO2 film on LaAlO3 is shown to be an intrinsic transparent metal and its metallic property arises from Nb substitution into Ti site as ev…
A composition-temperature phase diagram of the system (1−x)(K0.5Na0.5)NbO3–xLiNbO3 is presented for 0⩽x⩽0.1. Using dielectric and piezoelectric resonance measurements, and Raman spectroscopy, ceramic samples containing 2%–10% LiNbO3 were studied over a temperature range of 7–770K showing a complex sequence of phase tr…
Carbon nanotubes have exhibited unusually large changes in selective physical and mechanical properties when added to polymers or polymer composites in small quantities. To understand their rheological behavior and processibility, we mixed multiwalled carbon nanotubes (MWNT) in epoxy and created suspensions of differe…
This paper proposes a new energy storage system (ESS) design, including both batteries and ultracapacitors (UCs) in hybrid electric vehicle (HEV) and electric vehicle applications. The conventional designs require a DC-DC converter to interface the UC unit. Herein, the UC can be directly switched across the motor driv…
The properties of water‐in‐toluene emulsions stabilized solely by hydrophobized microfibrillated cellulose (MFC) were investigated. By varying the degree of surface substitution (DSS), the wettability of the MFC was altered. All emulsions prepared with MFC displayed excellent stability to coalescence. The stability to…
We have developed hydrogen (H)-doped In 2 O 3 films on glass with high mobility and high near-infrared transparency by using sputtering process performed at room temperature, followed by post-annealing treatment at 200 °C. To incorporate H-donor into In 2 O 3 matrix, H 2 O vapor has been introduced into a chamber duri…
Beta-cyclodextrin (β-CD) in alkaline solution has been observed to produce mono- and bimetallic nanoparticles of silver and gold and to provide in-house stability to both types of particles. Thus, the weak reducing capability of the β-CD molecule (oxidation occurs at +1.33 V vs Ag/AgCl) and its unique kinetic control…
The broadband optical absorption properties of silicon nanowire (SiNW) films fabricated on glass substrates by wet etching and chemical vapor deposition (CVD) have been measured and found to be higher than solid thin films of equivalent thickness. The observed behavior is adequately explained by light scattering and l…
Two series of nanostructured oxidized copper−cerium catalysts with varying copper loadings, and prepared, respectively, by impregnation of ceria and by coprecipitation of the two components within reverse microemulsions, have been characterized in detail at structural and electronic levels by X-ray diffraction (XRD),…
Biodegradable composite materials can be produced by the combination of biodegradable polymers and natural fibers. In this study, a new biodegradable composite of hemp fiber reinforced polylactic acid (PLA) was fabricated using the hot press method. Mechanical properties of composites with different fiber volume fract…
Boron difluoride compounds are light emitting materials with impressive optical properties. Though their strong one- and two-photon absorption and intense fluorescence are well-known and exploited in molecular probes, lasers, and photosensitizers, phosphorescence, in contrast, is typically observed only at low tempera…
Using the first-principles method, we investigated the molecular and electronic structures of oxygenized carbon nanotubes (CNTs) and boron nitride nanotubes (BNNTs). This is done by considering (5,5) and (10,0) tubes, which have similar diameters. The reaction of CNTs with oxygen molecules is largely exothermic, parti…
The paper presents the description, results and result analysis for the effect of fire‐protection impregnation with a salt‐containing agent, made by a vacuum‐and‐pressure method, on wood strength. A significant effect of this impregnation type was proven for the strength types as follows: static bending, tension, leng…
Highly ordered supermicroporous silica (space group 2D- p 6 mm ) was prepared using gemini surfactant [C 8 H 17 −N + (CH 3 ) 2 −(CH 2 ) 2 −N + (CH 3 ) 2 −C 8 H 17 ]·2Br - (denoted C 8-2-8 ) with a short spacer group ( s = 2) as the structure-directing agent and sodium silicate as the precursor. The samples were charac…
We investigate theoretically field effect transistors based on single-walled carbon nanotubes (CNTFET) and explore two device geometries with suspended multiwalled carbon nanotubes (MWNT) functioning as gate electrodes. In the two geometries, a doubly or singly clamped MWNT is electrostatically deflected toward the tr…
Significant quantities of water are being produced and discharged as a by-product of coalbed natural gas (CBNG) development in the Powder River Basin (PRB). Elevated salinity and sodicity in CBNG water has become a major concern, particularly with regard to its use or disposal. If land applied, elevated salinity and/o…
Este trabalho teve como objetivo avaliar a viabilidade da utilização de casca de arroz e partículas de madeira para a manufatura de compósitos, tendo como agente ligante o polietileno de alta densidade (PEAD). Os compósitos foram produzidos com casca de arroz e partículas de madeira de Eucalyptus grandis, puras ou mis…
본 연구는 누에고치를 가수분해하여 얻은 실크단백질 효소 가수분해물이 비만형 당뇨병 모델인 OLETF 쥐의 당뇨병 개선에 미치는 영향을 조사하였다. 27주령의 OLETF 쥐를 당뇨대조군과 실크단백질 효소 가수분해물 0.5%, 0.8% 섭취군으로 나누어 19주 동안 음수로 섭취시켰다. 19주 동안 실험동물의 체중, 식이 섭취량, 음수 섭취량을 측정하고, 매주 2회씩 비공복과 공복 혈당변화를 관찰하였으며, 19주 후 모든 동물을 희생시킨 후 혈액을 채취하여 혈청지질과 인슐린 및 렙틴의 농도를 분석하였다. 당뇨대조군의 체중은 실크 단백질 효소 가수분해물 섭취군에 비해 크게…