Materials Literature
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Faster-than-exponential decays and hyper-diffusive dispersion relationships detected in X-ray photon correlation spectroscopy measurements on poly(N-isopropyl acrylamide) hydrogels in the out-of-equilibrium jammed state are the result of uniform deswelling.
High‐quality boron nitride nanotubes were synthesized by annealing porous precursor in flowing NH 3 gas at 1150°C. The porous precursor B 18 Ca 2 (MgO) 9 was produced by self‐propagation high‐temperature synthesis (SHS) method using Mg, B 2 O 3 , and CaB 6 as the starting materials, which played an important role in s…
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Nanorods assembly of mesoporous boehmite (γ-AlOOH) films of thickness ∼2 μm with a preferential crystallographic growth along <020> have been synthesized. The films have been deposited on glass substrates by dip-coating using aluminium tri-sec-butoxide derived AlOOH sols in presence of CTAB. CTAB allows assembly of co…
The differences in the destruction mode of anode-supported solid oxide fuel cells (SOFCs) as a result of small and large amounts of oxidation were investigated. The cells were oxidized by O 2 − ions and rereduced by H 2 gas (redox cycle). When 0.6% of Ni in the anode was oxidized, its microstructure near the electroly…
We are reporting the first supramolecular dimeric units of basic carboxylates. The neutral [Fe(III)₂M(II)O] motif for different 3d M metals is covalently bound through 2,2'-bipyrimidine. We have structurally characterized the hexanuclear clusters and the related trinuclear building blocks. Their magnetic properties ha…
A previous work (S. Abelló and J. Pérez-Ramírez, Adv. Mater., 2006, 18, 2436) revealed an unanticipated variation in the textural properties of Mg–Al hydrotalcite, prepared by continuous coprecipitation with short residence time, τ = 1 s which, at that time, was not fully understood. Herein, we report the generalisati…
The synthesis, structure and magnetic properties of a 3D network based on {Co₄(cit)₄}⁸⁻ (H₄cit = citric acid) cubane units linked by octahedral Co(II) centres is reported.
Manipulation of enzyme activity at will presents various research and industrial applications. Herein we describe development of a technology for inactivation and reactivation of enzyme activities using a polyanionic poly(acrylic acid) (PAAc) and a polycationic poly(allylamine) (PAA). Enzyme activities of ribonuclease…
Surface modification of nanosilica was done with a novel synthesized dipodal silane based on 3-aminopropyltriethoxysilane and γ-glycidoxypropyltrimethoxysilane. Then, it was used in a rigid polyurethane foam as reinforcing agent. The presence of two functional groups (−NH, −OH) on the nanosilica surface could help to…
Bubble columns and slurry bubble columns, as multiphase reactors, are favored for a wide range of applications in the chemical, biochemical, petrochemical and metallurgical industries. They are considered the reactor of choice for the Fischer Tropsch synthesis, among other applications, offering an alternative energy…
High density concrete is widely used in railway, crane counterweight, radiation shielding in nuclear plants or other radiation related application in medical establishment. The aim of this study is to increase the density of concrete and accomplish it by using steel treatment waste as aggregatesiron dross (mainly iron…
In this chapter, we outline the protocols for PEGylation of some drug carriers, such as dendrimer, polymeric nanoparticles, liposomes, for systemic delivery. PEGylation simply refers to the modification of particle surface by covalently grafting, entrapping, or adsorbing PEG chains of vivid length. However, limitation…
نم نكمتلا مت دقل طئلاخ ى لع لوصحلا DGEBA/Phn ةطاسوب يبقا عتلا ط لخلا ة ينقت . د قو ةسارد تمت طئلاخلا هذ هل يرارحلا ليصوتلا لماعم يرارحلا ىدملا للاخ 303-373°K و ، كلاو فونلل ةينزولا ةبسنلا ةدايز دنع يرارحلا ليصوتلا لماعم ميق يف ةدايز جئاتنلا ترهظأ ) Phn ( ، تدصرو ة يلخادلا ة يئيزجلا ةآرحلا ةدايز ةجيتن ةيلاعلا ةرارحلا ت…
Based on first-principles equation-of-state and lattice dynamics calculations, a new boron allotrope with K(4) structure is proposed, which gives the first example of a three-dimensional all sp(2) network.
Modeling elastic and thermal properties of 2.5D carbon fiber and carbon
Wetting properties of a wide range of materials can be modified by accurate laser micromachining with ultra short laser pulses. Controlling the surface topography in a micro and sub-micrometer scale allows the generation of waterrepellent surfaces, which remain dry and prevent ice accumulation under certain conditions…
We demonstrate the successful use of hard X-ray photoelectron spectroscopy (HAXPES) for selectively probing the platinum partial d-density of states (DOS) in a Pt-Cu nanoparticle catalyst which shows activity superior to pure Pt towards the oxygen-reduction reaction (ORR). The information about occupied Pt d-band stat…
Adjusting the molar ratio between α-CD and copolymer can induce supramacromolecular complexes to dynamically and reversibly self-tune their fabrication from micelles to cylinders to vesicles to sheets like “living” assemblies.
Abstract—Here we present the rigorous electrodynamical solution of diffraction problem about the microwave scattering by a multilayered cylinder. The number and thickness of layers is not limited. We offer the solution when the central core of multilayered cylinder can be made of different isotropic materials as a met…