Materials Literature
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A new grayanol diterpenoid, grayanotoxin XXII (1), and a new phenolic glucoside, benzyl 2-hydroxy-4-O-[beta-xylopyranosyl(1'' --> 6')-beta-glucopyranosyl]-benzoate (2), were isolated from the flowers of Pieris formosa. Their structures were determined on the basis of spectroscopic analysis and chemical methods.
Preliminary noteThe industry is under increasing pressure of the financial crisis, global competition, stricter environmental legislation and supply-chain demand.To tackle these issues, a sustainable development trend has to be assured synergetically on all the levels/fields, including machining processes.This paper p…
In this paper we present a novel method to describe the quality of multi-crystalline as-cut wafer based on photoluminescence imaging (PL). PL has a high potential to detect efficiency relevant defects already on as-cut wafers. Defects that can be detected are for instance crystal dislocations and contaminations from i…
Thermodynamic interaction of chromium on titanium in liquid Fe–Cr alloys was studied by measuring the effect of chromium on the solubility product of TiN in liquid Fe–Cr–Ti–N alloys by the metal–nitride–gas equilibration technique in the temperature range from 1873 to 1973 K. Titanium nitride formed in the melt was id…
The plum fruits (cv. Fraiar) were packaged with polyvinyl chloride resin (PVC) film and then stored at 0°C for 60 days, the results showed that modified atmosphere packaging (MAP) delayed the fruit softening, suppressed the increase of the soluble solids and anthocyanin contents and browning degree, decreased the acti…
Xylans are polysaccharides present in large amounts in cell walls of vascular plants. They possess an inherent affinity to cellulose and will thus adsorb irreversibly on cellulose surfaces. This propensity, along with the great abundance in nature, provides great opportunities for the use of xylans as renewable and bi…
For virtual connector designing, it is important to predict contact resistance at a mating point. This study investigated the relationship between contact load and contact resistance in terms of contact shape, plating material and plating thickness. Tin plated and silver plated copper alloy samples were used. The cont…
A new method for detection of power quality disturbance is proposed: first, the original signals are de-noised by the wavelet transform; second, the beginning and ending time of the disturbance can be detected in time, third, determining the cause of power quality disturbances using various approaches such as Multi Re…
A large number of medicinal plants are claimed to b e useful in skin disease in all traditional system of medicine and folklore. While these plant remedies a re being used orally and by local application. Looking to the scope of herbal drug and increasing demand especially in disease of liver, cancer, diabetes, hypert…
Scanning electron microscopes are useful biological tools that can be used to image the surface of whole organisms, tissues, cells, cellular components and macromolecules. Processes and structures that exist at surfaces can be imaged in pseudo or real 3D at magnifications of anything from about x10 to x1,000,000. Ther…
This work is part of a wider research programme that aims at producing alternatives to\nconventional building materials. The aim of this project is to investigate several\nphysical properties of a sustainable, carbon-negative, lime-hemp biocomposites which\ncan partially replace existing, non-biodegradable, non-sustai…
In this paper, a high-e-ciency wireless energy transmis- sion via magnetic resonance is implemented by using negative perme- ability metamaterial structures. The metamaterial structure is con- sisted of a three-dimensional (3D) periodic array of the unit cell that the capacitively loaded split ring resonators (CLSRRs)…
The aim of the present study was to determine the anthelmintic activity of crude extracts and different fractions from leaves, barks and flowers of Pterospermum Acerifolium Linn. Anthelmintic activity of crude extracts and fractions were investigated against earthworms (Pheretima posthuma), roundworms (Ascardia galli)…
The specific interaction of a supramolecular binding motif was quantitatively evaluated by dynamic single-molecule force spectroscopy (SMFS) using an atomic force microscope (AFM). The supramolecular capsule forms by two different cavitands stitched together by four hydrogen bonds between carboxylic acid and pyridyl g…
The preparation of highly fluorescent one-dimensional (1D) nanostructures within a selected area of a solid substrate is a challenging requirement for the realization of optoelectronic nanodevices. We present a novel method for fabricating highly fluorescent organic nanowires (NWs) embedded in a variety of polymer fil…
The objective of this research was to prepare, characterize, and to study dissolution properties of inclusion complexes of telmisartan (TLM), with β-cyclodextrin and hydroxypropyl-β-cyclodextrin and to study effect of complexation on aqueous solubility and rate of dissolution in dissolution media. The phase solubility…
This article focuses on a relatively new group of organosilicon polymers known as cyclolinear polycarbosilanes (CLPCS). This group of polymers contains 1,3-disilacyclobutane (DSCB) rings, i.e., cyclo-{RSi(CH(2))(2)SiR}-, bridged by various linking groups, so as to form linear chains with regularly spaced, strained, ri…
The certification of reference materials (CRMs) is one of the main tasks of the BAM Federal Institute for Materials Research and Testing. In this context CRMs for analytical chemistry play the dominant role. Traditionally, energy dispersive X-ray fluorescence (EDXRF) has been excluded from the final certification sche…
Quantum dots (QDs) are promising fluorescent tags for microarrays. Because most microarrays are analyzed under dry conditions, it is necessary to examine the photo properties of QDs in air. We demonstrate that the photophysical characteristics of individual quantum dots are different at the liquid/solid interface comp…
This study applied wavelength-dispersive X-ray fluorescence spectrometry (WDXRF), with its high spectral resolution, to monitor the photographic process, tarnishing and restoration of pristine Daguerreotypes made in the traditional 19th century fashion. The elemental changes upon restoration via thiourea treatment, we…