Materials Literature
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Alternating current dielectrophoresis in water was used to position graphite oxide soot (GO-soot) particles generated by rapid thermal expansion of graphite oxide under inert gas. The dielectrophoretic deposition was carried out at a frequency of 10 MHz and a peak-to-peak voltage of 10 V, and the deposited particles w…
The chemoenzymatic installation of the clinically valuable (S)-4-amino-2-hydroxybutyryl side chain onto a number of 2-deoxystreptamine-containing aminoglycosides is described using the purified Bacillus circulans biosynthetic enzymes BtrH and BtrG in combination with a synthetic acyl-SNAC surrogate substrate.
In this study we present the first combined investigation into the composition of the major matrices involved in calcification processes (surrounding water, extrapallial fluid, aragonite, and calcite) of Mytilus edulis with respect to their calcium isotope (δ44/40Ca) and elemental compositions (Sr/Ca and Mg/Ca). Our a…
Networks-on-chip (NoC) have been widely proposed as the future communication paradigm for use in next-generation system-on-chip. In this paper, we present NoCOUT, a methodology for generating an energy optimized application specific NoC topology which supports both point-to-point and packet-switched networks. The algo…
Activated carbon and natural bentonite, which is available abundant in Pacitan, East Java, Indonesia, have been used as adsorbents to remove amoxicillin from its synthetic waste. The aim of this study was to investigate the potential use of both activated carbon and natural bentonite to adsorb amoxicillin. Equilibrium…
The solid state structures of a family of 1,3-bis(m-di-X-phenyl)ureas where X = Cl, Br, I and their mono- and di-tolyl analogues were determined. Crystal growth from a variety of solutions yielded isostructural and isomorphous P21212 phases for all compounds. The molecules associate into infinite [R12(6)] hydrogen bon…
Enhancement of light output intensity for GaN-based vertical light-emitting diodes (LEDs), combining wafer bonding and the laser lift-off (LLO) process, employing an omnidirectional extraction surface with synthesized single-crystal ZnO nanorod arrays in aqueous solution at room temperature is presented. The light out…
Solid lipid nanoparticles (SLNs) loaded with Cyclosporine A using glyceryl monostearate (GMS) and glyceryl palmitostearate (GPS) as lipid matrices were prepared by melt-homogenization using high-pressure homogenizer. Various process parameters such as homogenization pressure, homogenization cycles and formulation para…
The self-assembly of an equilateral triangle that is both heterobimetallic and heteroleptic, its metal exchange to a homometallic triangle and further ligand exchange (= edge of the triangle) were elaborated.
Results obtained on a conductive multilevel device realized with a 100 nm azo-polymer film are reported. The capability to switch between three different conductance states makes the device versatile both for Write Once Read Many and Write Many Read Many memory cell application. The analysis of the - curves indicates…
We have produced emulsion droplets of controlled size and composition coated by ligands, and studied the adhesion of these drops on a solid substrate coated by receptors and polymers. Using transmission, RICM and fluorescence microscopy we assess the size, contact angle and ligand density for each drop. We first show…
Relaxation of free volume in Zr50Cu40Al10 bulk metallic glass during isothermal annealing below Tg (glass transition temperature) has been investigated by using positron annihilation lifetime and coincidence Doppler broadening (CDB) techniques. The mean positron lifetime decreases with increasing annealing time at eac…
In the military applications, electro-optics and electromagnetics features of the cloths made of special textile structures and certain fibers play an important role in producing textile characterized with high ability of camouflage. This means not allowing enemy to precisely determine the moving and mute targets usin…
Retention and release kinetics of Cu on four acid Typic haplumbrepts developed on two different types of parent rock material (granite and amphibolite) were studied with a stirred‐flow chamber (SFC) method. The granitic soils were lower in organic material and lower in Fe and Al oxides than the soils formed in amphibo…
To prolong the precorneal resident time and improve ocular bioavailability of the drug, Pluronic-g-poly(acrylic acid) copolymers were studied as a temperature-responsive in situ gelling vehicle for an ophthalmic drug delivery system. The rheological properties and in vitro drug release of Pluronic-g-PAA copolymer gels…
Colon-specific drug delivery systems (CDDS) can improve the bioavailability of drug through the oral route. A novel formulation for oral administration using pH-enzyme Di-dependent chitosan mcirospheres (MS) and 5-Fu as a model drug has been investigated for colon-specific drug delivery by the emulsification/chemical…
In this work we report an easy method for improving the deficient properties of nanosized Si as an electrode material for lithiumcells. The method involves mixing it with cellulose fibers in appropriate amounts. A composite electrode made in a ratio 34:66%w/w Si/cellulose and containing no other additive was found to ex…
A new member of 3d-4f metal–organic framework (MOF), Gd2Cu(μ-H2O)2(ip)4(CH3CH(NH3)CO2)2·H2O (1, ip = 1,3-benzene dicarboxylate), was generated by the hydrothermal self-assembly of Gd2O3, CuCl2, H2ip, and L-alanine. In 1, the slightly distorted CuO4 squares combine with GdO9 polyhedra via ip and CH3CH(NH3)CO2 carboxyl…
Increasing world demand for energy has resulted in plans to expand the oil and gas transmission pipeline infrastructure in many countries utilizing higher strength steels of API grade X70 and X80. Traditional transmission pipeline steels, up to grade X70, relied on a ferrite/pearlite microstructural design generated t…
The effects of heat treatment and hot forging on the microstructure and mechanical properties of Co-Cr-Mo alloy for implant applications were examined. In an alloy annealed at 1200°C for 1 h, M23C6 carbides precipitated along the grain boundary in the γ phase matrix containing a small amount of ε phase. The 0.2% proof…