Materials Literature
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The new concept developed in this study is the preparation of a new derivative of erythrocyte ghosts, i.e., membrane vesicles loaded with doxorubicin (Dox) HCl and coupled to folic acid to improve cancer chemotherapy. N-hydroxysuccinimide (NHS) folate was then conjugated to membrane vesicles. These membrane vesicles w…
Present leather-making processes cause difficulties, with regard to their perceived environmental impact. Pretanning and tanning processes contribute more than 90% of the total pollution load from leather processing. Conventional process methods subject the skin to wide variations in pH. Such pH changes, lead to salt…
The fretting corrosion of five materials for implant suprastructures (cast-titanium, machined-titanium, gold alloy, silver-palladium alloy and chromium-nickel alloy), was investigated in vitro, the materials being galvanically coupled to a titanium ball-and-socket-joint with tetrafluoroethylene under mechanical load.…
Microbiologically influenced corrosion (MIC) is an electrochemical process where the participation of microorganisms initiates, facilitates, or accelerates the corrosion reaction. Sulfate-reducing bacteria (SRB) reduce sulfate to sulfide and are known to be the most destructive microorganisms in anaerobic MIC. Accordi…
With the increase in wood-plastic composite (WPC) products in the commercial marketplace, it is important that the material properties of WPC products are accurately determined. Many of these products are targeted for use in flexural applications; thus the ability to accurately determine the flexural properties is of…
The theoretical model taking into account interactions of a spin-crossover molecule with its two nearest neighbours has been applied to the data on spin crossover equilibria in a series of Fe(II) complexes with halogenated ethyltetrazoles. Transition curves of different shapes, varying from a gradual to a two-step and…
Microbiologically influenced corrosion (MIC) describes the largely negative influence that a microorganism can have on a material, with sometimes severe consequences for humans, nature, and the economy. Although the problem of MIC has been known for decades, work on this topic has been fragmented and isolated; interdi…
A 5,15,25-trialkynyl [28]hexaphyrin(1.1.1.1.1.1) is the main product of the boron trifluoride-catalysed condensation of meso-anthryl dipyrromethane and triisopropylsilylpropynal; it absorbs strongly in the near-infrared, out to 1093 nm.
Liposomes have raised considerable interest as drug carriers in cancer chemotherapy [1] given their ability to alter the biodistribution and control the release rate of encapsulated drugs. Their ve...
This communication describes a relatively new and simple method for the preparation of AgI nanowires using nanoporous alumina membrane templates which can be easily extended to prepare nanowires of many other materials.
Abstract 2‐Methacryloyloxyethyl phosphorylcholine (MPCE) was synthesized using phosphorus trichloride, ethylene glycol, 2‐hydroxyethyl methacrylate and triethylamine, and then used in the preparation of O ‐butyrylchitosan‐bonded MPCE (MPCE–BCS) by Michael addition of MPCE to amino groups of O ‐butyrylchitosan. The str…
As is well known, the Cr2+/SiO2 system is an efficient catalyst for ethylene polymerisation already at RT (even if in the industrial process the running temperature is ∼380 K). For this reason it is the ideal system for in situ spectroscopic investigations on a genuinely working catalyst (Adv. Catal., 2001, 46, 265).…
Advanced materials are targeting durability improvement in gas turbine engines. One general area of concern for durability is in the hot section components of the engine. Ceramic matrix composites offer improvements in durability at elevated temperatures with a corresponding reduction in weight for nozzles of gas turb…
An electrochemical method of preparing a high surface area nickel electrode by NiZn alloy formation and subsequent dealloying in (60-40 mol %) at 450°C was studied. A nickel electrode was kept at 0.22 V vs. Zn in where γ-NiZn alloy was formed, and then at 0.5 V where partial dealloying occurred to yield α-NiZn alloy.…
The generation of controlled metal alkoxide structures has been explored using 4,6-dihydroxypyrimidine (DHP-H2) as a selective bridging ligand. DHP-H2 was reacted with Ti(OPri)4 in pyridine (py). Crystallization from this solution led to the isolation of [(OPri)2(μ-OPri)Ti(μ-DHP)Ti(OPri)3(py)]2 (1). The two dinuclear…
An investigation of the behaviour of various calcined mesoporous silicas (MCM-41, MCM-48, SBA-15, HMS) in OH/surfactant/H2O systems, at room temperature or under hydrothermal (150 °C) conditions, has shown that their stability (i.e., whether or not they are dissolved) depends on the match between the pore channel stru…
Boron Nitride (BN) coating on sintered SiC fibers (Tyranno SA) by a continuous chemical vapor deposition (CVD) process was developed with the ultimate goal of controlling the interface in SiC/SiC composites. BN coating by a continuous CVD process was conducted at 1580°C under a pressure of approximately 1.3×102Pa. Rea…
Very stable copper(I) complexes were engineered from pyridine ligands bearing on one side an iminophenyl fragment and on the other a pivotal methyl group. The phenyl group was substituted in the para position either by a methoxy group or by a phenyl ester group grafted with three paraffin chains (n = 8, 12, 16). The m…
The optical properties of a-Se100-xSbx thin films (where x = 0, 0.5, 2.5, 5 and 10) have been studied in the wavelength range 540–900 nm. It was found that the optical band gap increases with increasing Sb concentration in the a-Se100-x Sb x system. The refractive index n decreases, while the extinction coefficient k…
It is well known that the sharpness of secondary recrystallized Goss texture ({110}‹001›) is deteriorated by nitriding primary recrystallized sheet on the ordinary grain oriented silicon steel. The cause of this deterioration was investigated. It was found that secondary recrystallization of Dispersed Goss ({110}‹229›…