Materials Literature
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The hydrogenase enzyme is an effective replacement for the expensive platinum catalysts used in hydrogen fuel cells today. However, many enzymes themselves are found in extreme environments and are inactive under standard conditions, but current active site models have a much larger over-potential for H+ reduction tha…
The quality of semi-products of platinum metals and alloys,produced by way of plastic working,essentially depends on or,in many cases,is completely determined by the quality of ingots.Plastic working does not make it possible to eliminate or localize metallurgical defects.In many cases it promotes the occurence thereo…
Thermoelectric power generation represents a class of energy conversion technology,which has been used in power supply of aeronautic and astronautic exploring missions,now showing notable advantages to harvest the widely distributed waste heat and convert the abundant solar energy into electricity at lower cost than S…
In this study, NiFe2O4 nano particles was prepared with aqueous solutions of nickel nitrate and ferric nitrate salts. An appropriate ratio of solutions nickel nitrate and ferric nitrate were dissolved in deionized water and poured into a crucible. Later, polyethylene glycol 600 (PEG 600) was added to this mixture. Sam…
Konstruksi anjungan lepas pantai dibangun di perusahaan pembangun anjungan lepas pantai (offshore fabricator), dimana proses loadout merupakan salah tahapan pekerjaan yang dilakukan. Proses loadout dapat dilakukan dengan menggunakan tiga metode, yakni menggunakan skidway, lifting dan menggunakan dolly. Proses loadout…
The elegant study by Naresh and colleagues (1) synthesizes many of the best aspects of molecular magnetic resonance(MR) imaging: Quantitative serial imaging of a well-defined molecular process is performed in vivo, and its results are correlated with sensitive measures of left ventricular function. The technique descr…
Water soluble compoundes were attached to single-walled carbon nanotubes (SWNTs) to form water- soluble nano dyes. functionalized SWNTs were then characterized by Fourier Transform Infrared spectroscopy (FT- IR), Raman spectroscopy, scanning electron microscopy (SEM) and UV analysis. The product can be dissolved in wa…
The purpose of this work is to model the monoscale predictive behavior and to reproduce certain experimental observations by using numerical simulation based on the theory of anisotropic elasticity. The latter allows us to express all the necessary expressions describing the strain field. The Fourier series expansion…
Abstract The reaction of [Cu(PF6)2(py)4] (py: pyridine) with [Cu(CH3SO3)2(py)4], both of which are Werner-type Cu(II) complexes, in a MeOH solution led to the formation of a one-dimensional framework composed of [–{Cu(1)2(MeO)2}–Cu(2)–Cu(3)–Cu(3)–Cu(2)–] repeating units bridged by inorganic CH3SO3− anions.
We propose a new approach to experimentally determine the spatial resolution of nanogap quantum dot (QD) photodetectors consist of solution-processed QDs. Cross talk between a pair of closely positioned QD photodetectors was measured. Devices with 200 nm spacing exhibit low crosstalk of 8.4%. A single QD photodetector…
Integrin clustering, typically nanometers in dimension, is the first and an important step in integrin-mediated cellular signaling processes such as focal adhesion. Engineered nanostructures mimicking extracellular matrices (ECM) provide a new approach for investigation and regulation of this initial step and of downs…
We report a simple method of enhancing the chemical stability of monothiol-modified oligonucleotide-gold and -silver nanoparticle conjugates by a thin silica reinforcement coating. Conventional conjugates prepared by chemisorption of monothiol-modified oligonucleotides onto nanoparticle surfaces undergo rapid aggregat…
Manganese is one of the most abundant metals on earth and is found as a component of more than 100 different minerals. Besides being an essential trace element in relation to the metabolic processes in the body, manganese is also a paramagnetic metal that possesses similar characteristics to gadolinium with regards to…
Noble metal participation in nanostructured semiconductor catalysts has drawn much interest because of their improved properties. Recently, it has been discussed by many researchers that Ag participation in TiO2, CuO, ZnO semiconductors showed improved photocatalytic and optical properties. In this research, Ag/ZnO na…
In this paper, vanadium oxide thin film of TCR of −3.5%/K has been deposited by pulsed DC magnetron sputtering method. The property of this VO x has been investigated by X-ray diffractometer (XRD) and atomic force microscopy (AFM) in detail. XRD test indicates that this film is composed of V2O3, V3O5 and VO2.VO x micr…
Carbon monoxide poisoning of the anode catalyst is currently a big problem facing the use of hydrogen fuel cells. This study uses density functional theory to model the interaction between a filter membrane and carbon monoxide to optimise the removal of CO from the H2 feed gas. The membranes studied are graphene/metal…
Periodic arrays of subwavelength apertures on Ag film are used as the substrates for nanohole-enhanced Raman spectroscopy. This study presents a rectangular bull's eye structure in an array. We demonstrate the quantitative features of the pattern by the finite-difference time-domain method. This structure is used to e…
A low-temperature metallic-zinc-target reactive sputtering technology is used to fabricate a ZnO thin-film transistor (TFT). The effect of the$\hbox{O}_{2}/\hbox{Ar}$flow rate ratio on the performance of the resulting TFTs is investigated in detail. It is found that an$\hbox{O}_{2}/\hbox{Ar}$ratio of 0.75–0.8 produces…
The properties of the medium have an obvious effect on the process of the electrical explosion of the wire. In this paper, the electrical explosions of copper and aluminum wires were investigated in air and water with pulsed voltage in a time scale of a few microseconds. Based on the measurements of the current and vo…
Hydration reactions of sodiated and potassiated nucleic acid bases (uracil, thymine, cytosine, and adenine) produced by electrospray have been studied in a gas phase using the pulsed ion-beam high-pressure mass spectrometer. The thermochemical properties, ΔH(o)(n), ΔS(o)(n), and ΔG(o)(n), for the hydrated systems were…