Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
ABSTRACT This study prepared fluorine and SiO2 particles containing organic–inorganic hybrid polyimide nanocomposite coatings (PISFs) with inorganic content in the range of 5–20% in pure polyimide solutions via the sol–gel process. Polyimide hybrid structures containing fluorine and SiO2 particles were synthesized by…
The assistance of the proton plays a key role in the photoreduction of CO 2 to CO.
Abstract Being alone or together makes a difference for the photophysics of dyes but for ionic dyes it is difficult to quantify the interactions due to solvent screening and nearby counter ions. Gas‐phase luminescence experiments are desirable and now possible based on recent developments in mass spectrometry. Here we…
In this article, a three-time level finite difference scheme is used to resolve the dual phase lag’s (DPL) heat conduction in a micro scale gold film subjected to spontaneous temperature boundary conditions without knowing the heat flux. Finite difference analog of DPL equation on applying to the intermediate grid poi…
The geometric, electronic, and magnetic properties of Mo m Co n (3 ≤ m + n ≤ 8) and Mo x W y Ni z (3 ≤ x + y + z ≤ 8) clusters, as models for the hydrodesulfurization process, are investigated from a computational point of view. Optimized geometries of stable MoCo isomers show that Mo and Co atoms tend to segregate fr…
Uranium tetrafluoride was synthesized using a novel method, which consists of a combination of carbochlorination reaction between a mixture of U3O8 and sucrose carbon with chlorine, and a solid-state halogen exchange reaction between the products of the carbochlorination reaction and sodium fluoride. The thermodynamic…
Titanium alloys have been utilized in several structural applications such as automobile industries, aerospace, nuclear power plant, chemical and petroleum sectors. Titanium welding is a challenge due to its high reactivity with atmospheric oxygen when operating under high temperature. Laser beam welding process is fo…
A new thin grating-insulator-metal (GIM) structure with ultra-broadband wide-angle perfect absorption is proposed, and a general approach to this kind of multilayered structure is investigated based on the rigorous coupled-wave analysis method and the transfer matrix method. On the basis of this approach, the electrom…
Phosphoribosyltransferases are the tools that allow the synthesis of nucleotide analogues using multi-enzymatic cascades. The recombinant adenine phosphoribosyltransferase (TthAPRT) and hypoxanthine phosphoribosyltransferase (TthHPRT) from Thermus thermophilus HB27 were expressed in E.coli strains and purified by chro…
In this work we have investigated the potential benefits of using supramolecular gel networks as reaction media to carry out air-sensitive metal-free light-induced trifluoromethylation of six-membered (hetero)arenes under aerobic conditions. This reaction was performed at room temperature (RT) using sodium triflinate…
Mutually soluble semiconducting polymer films are sequentially deposited from solution to form multiple layers with minimal mixing.
We present the synthesis, characterization and photolytical degradation of branched photo-responsive poly(acrylic acid) and polystyrene using free radical polymerization of acrylic acid/styrene in the presence of a newly synthesized asymmetric o -nitrobenzyl-based crosslinker and different amounts of dodecanethiol (DD…
ABSTRACT Hydrogenated polynorbornene (hPN) synthesized by ring‐opening metathesis polymerization (ROMP) exhibits a thermoreversible change in crystal polymorph at a temperature T cc below its melting point, T m. The polymorphic transition corresponds to a sharp increase in rotational disorder around the chain axis as…
) to PCL scaffolds was examined for effects on the growth of human periosteal cells in vitro and in vivo. Electrospun PCL nanofiber (nanoPCL) scaffolds were fabricated with different silica contents (0, 0.5, and 1.0 wt %) and utilized as substrates on which periosteal cells were seeded. Human periosteal cell growth an…
Although photodegradation is the most widely studied method for the purification of water, the challenges for the post‐separation of catalysts from water make the technique unsuitable for practical applications. In this study, separation‐free TiO 2 /reduced graphene oxide (rGO) multilayer films were first prepared thr…
Plant cell wall is constituted by three main polysaccharides: cellulose, hemicellulose and pectin. The principal pectin domains comprise homogalacturonan, rhamnogalacturonan I (RG-I) and ramnogalacturonan II. Rhamnogalacturonan lyase (RGL) enzyme is capable of catalyzing the degradation of the RG-I backbone by a b-eli…
In single-particle analysis (SPA), the aim is to obtain a 3D reconstruction of a biological molecule from 2D electron micrographs to the highest level of detail or resolution as possible. Current practice is to collect large volumes of data, hoping to reach high-resolution maps through sheer numbers. However, adding m…
We demonstrate that the performances of dye-sensitized solar cells (DSCs) sensitized with a previously reported N-heterocyclic carbene iron(II) dye in the presence of chenodeoxycholic acid co-adsorbant, can be considerably improved by altering the composition of the electrolyte while retaining an I−/I3− redox shuttle.…
Abstract The nearly hemispherical field of view (FOV) of arthropodal compound eyes has inspired analogs ranging from curved, lens‐patterned domes to planar constructs patterned with microlenses. A radial distribution of cylindrical waveguides that monotonically spans ±33° confers an FOV of 115° to a slim (≤3 mm) polym…
Quorum sensing (QS) plays an important role in the growth, nodulation, and nitrogen fixation of rhizobia. In this study, we show that water-soluble humic materials (WSHM) repress the expression of the QS related genes sinI, sinR, and expR in Sinorhizobium meliloti. This decreased the production of N-acetyl homoserine…