Materials Literature
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Two tirucallane triterpenes, namely flindissol (1) and 3-oxotirucalla-7,24-dien-21-oic-acid (2), were isolated from the dichloromethane extract of the stem of Luvunga scandens (Roxb.) Buch-Ham ex Wight & Arn, Rutaceae. This is the first report of their isolation from this plant. Their structures were constructed by hi…
Magnetic Resonance Imaging (MRI) has become a prominent imaging technique in medicine. MRI contrast agents are used to increase the sensitivity of this technique. Recently, a new method for cancer treatment with a less side effect called photodynamic therapy (PDT) has been introduced. In this method cancer tissues are…
We report the synthesis and properties of the first examples of four novel multiply hexaarylated boron-dipyrromethenes (BODIPYs) containing three different types of aryl groups on each pyrrole ring of BODIPY. The BODIPYs were synthesized over a sequence of steps of bromination followed by Suzuki coupling with arylboro…
Sulfo derivatives of cobalt phthalocyanine containing naphthalene fragments have been synthesized, and their self-association and molecular complexation with pyridine in aqueous solution have been studied by spectrophotometry. The dissociation constants of the dimeric associates have been determined. The effects of th…
The possibility of surface activation of polyethylene terephthalate materials due to their weak alkaline hydrolysis which does not cause weakening of the fibrous material has been shown. The activation has the positive effect on the functional products application on polyester material surface. It has been shown that…
Photochromic fabrics were prepared by a dip-coating method using a silica sol-gel solution containing photochromic dyes. The coated fabric showed a rapid photochromic response. Three methods; incorporating a UV stabilizer in the coating layer, hydrophobic treatment of the porous surface, and covering the coating layer…
Nowadays, a real challenge in cancer therapy is to design drug delivery systems that can achieve high concentrations of drugs at the target site for improved therapeutic effect with reduced side effects. In this research, we designed and synthesized a homing peptide-(TNYLFSPNGPIA, TNYL) modified chitosan-g-stearate (C…
Ferroelectric and piezoelectric properties of KNbO3 films deposited on flexible organic substrate by hydrothermal method, Shiraishi, Takahisa, Kaneko, Noriyuki, Ishikawa, Mutsuo, Kurosawa, Minoru, Uchida, Hiroshi, Funakubo, Hiroshi
We have investigated the magnetic properties of the silicene doped with Fe and Cr metal atoms under external electric field by the first-principles calculations. We find that the doped systems show a variety of interesting magnetoelectric (ME) behaviors: (1) The magnetic moment of Fe doped silicene show a sharp jump a…
In this work, a new approach for construction of high aspect ratio complex moiré superlattice structure with versatile super‐periodicity is developed using the moiré fringe and secondary sputtering lithography. Wide assortments of high aspect ratio complex superstructures having different features on a 10 nm scaled wa…
We report the fabrication and control of a nanostructure superlattice of silver using a solid–liquid–solid (SLS) mechanism induced on a silver thin film by interfering femtosecond laser irradiation. An interference pattern induces fluid flows of silver, which is followed by freezing of a free-standing nanowhisker, nan…
We present a high‐pressure optical spectroscopy study on single‐walled carbon nanotubes (SWCNTs) doped with bromine using nitrogen as pressure transmitting medium. Bromine‐doped SWCNTs (Br‐SWCNTs) with different doping levels were prepared by the gas phase method and characterized by optical and Raman spectroscopy. Th…
The elastic constants, elastic anisotropy index, and anisotropic fractional ratios of Ti 4 AlC 3 , Zr 4 AlC 3 , and Hf 4 AlC 3 are studied by using a plane wave method based on density functional theory. All compounds are characterized by the elastic anisotropy index. The bond length, population, and hardness of the t…
High-resolution calorimetry has many important applications such as probing nanoscale thermal transport and studying the thermodynamics of biological and chemical systems. In this work, we demonstrated a calorimeter with an unprecedentedly high resolution at room temperature using a high-performance resistive thermome…
Experiments show that the electric conductivity of a polyaniline (PANI) complex with polyacid increases upon the introduction of graphene. It is found for the first time that this effect strongly depends on the degree of graphene oxidation: the presence of unoxidized and half-oxidized graphene increases the electric c…
Natural killer (NK) cells are a particular lymphocyte subset with a documented cytotoxic activity against cancer cells. Evidence of NK antitumoral effect led researchers to focus on the development of immunotherapies aimed at augmenting NK recruitment and infiltration into tumor and their anti-cancer functions. Studie…
Poly(ε-caprolactone) is an established polymer used in the fabrication of scaffolds for tissue engineering applications. Poly(ε-caprolactone)’s intrinsic hydrophobicity and toxicity, however, is greater than other natural polymers which limits its applicability. In this study, these problems were addressed by the modi…
The goal of this paper is to describe the materials and building technique to design a high-temperature induction machine which temperature winding is about 500°C. First, the candidate materials are identified and because of the constraints imposed by these materials, a special geometry is proposed. The authors show t…
In this work, the microstructural and mechanical properties of the certain magnesium-based alloys were investigated. The alloys were produced under a controlled atmosphere by a squeeze-casting process and characterized by optical microscopy (OM), scanning electron microscopy (SEM), an energy-dispersive spectrometer (E…
Voltage source converters is used in HVDC stations in offshore HVDC transmission systems, between the AC and DC power grid. The AC ripple voltage on the DC side of the HVDC stations can be in the range of 1-10 % of the nominal DC voltage, depending on the size of the filter employed. For offshore HVDC grids, there is…