Materials Literature
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A novel approach for the synthesis of sulfonic acid functionalized periodic mesoporous silicas via covalent attachment of 2-(3,4 epoxycyclohexyl)ethyltrimethoxysilane or 3-glycidoxypropyltrimethoxysilane followed by reaction with sulfite ions and mild hydrochloric acid is presented. The materials demonstrated superior…
With respect to nanoscale ferroelectric thin films research, piezoresponse force microscopy (PFM) for domain imaging and local piezoelectric spectroscopy for switching properties and piezoelectric activity measurements require the control of experimental conditions associated to the experimental set-up. To avoid any m…
In this letter we describe a new application of a chiral micellar system for the optical resolution of racemic compounds by crystallization. Chiral surfactants based on N-stearoyl acid were synthesized and used in order to form a chiral micellar system of calcium tartrate tetrahydrate (CaT) crystallization. It is show…
We present a systematic analysis of electron transport characteristics of carbon nanotube (CNT) intramolecular heterojunctions with peptide linkages, MM, SS, SM1, and SM2 where M and S stand for metallic and semiconducting CNT electrodes, respectively. Our theoretical investigations show that the incorporation of pept…
Wood from balsa and Japanese cypress was transformed into carbonaceous preforms by pyrolysis and subsequently converted into cellular SiC ceramics by heating with Na and Si at 973 K for 86.4 ks. X-ray diffraction showed the structure of the formed SiC to be cubic β-type. Cellular structures similar to those of the pre…
Abstract Biodiversity in benthic diatom communities was determined to assess the ecological state and to evaluate changes in water quality in time and space in the prealpine part of the river Töss (Switzerland). One site upstream and three sites downstream from the inlet of a communal waste water treatment plant (WWTP…
The syntheses of three original trifluoromethylated enaminones L1H-L3H, an unexplored type of ligand with possible multiple coordination centres, their redox properties and explorative coordination chemistry with copper(II) are presented. The ability of these ligands to coordinate copper(II) and then to form new mono-…
This work has investigated the corrosion properties of three types of stainless steels in a tar sand digester environment with the aim of establishing their relative resistances in the environment.
Significant quantities of slag are generated as waste materials or by-product from steel industries. They usually contain considerable quantities of metals. In this study, steel slag obtained from a steel factory in Jordan was used in Asphalt Concrete Hot Mixes (ACHM). Marshall specimens were prepared with 100% lime s…
, resulted in the historical discovery of carbon nanotubes (CNTs), ultra-thin carbon fibres with nanometre size dia-meter and micrometre size length. Iijima obtained only a multiwalled carbon nanotube (MWCNT) and that is indeed a milestone in the study of different forms of carbon. Subsequently, Iijima and Ichi-hashi
2005 年 2 月に播磨灘から備讃瀬戸に至る香川県沿岸域で大型珪藻 Chaetoceros densus のブルームが形成され，2 月中旬には播磨灘で最高細胞密度 9 万 cells/L を記録した。本種の急激な増殖に伴い海域の栄養塩が急減し，播磨灘のノリ漁場を中心に，本種の増殖によるノリ色落ち被害が日本で初めて確認された。ブルーム形成期の塩分は平年より著しく低く，栄養塩はブルーム形成まで平年並みか平年より高かった。従来報告されていた以外の種でも，ノリ色落ちの原因藻となりうる可能性があり，ブルームの予測にはプランクトンの注意深いモニタリングが必要である。
Increasingly, the materials that are under study for their interesting technological or scientific properties are highly complex. They are made of multiple elements, have large unit cells and often low dimensional or incommensurate structures.1 Increasingly also, they have aperiodic disorder: some a...
A CaCO3 layer was produced by brushing immobilized bacteria and nutriments onto the cement paste surface after 7 d. The deposited layer was about 100 μm and bound with the surface tightly. A carrier was used to immobilize the bacteria with agar, which could provide a microenvironment for bacterial growth, urea digesti…
The morphologies and growth kinetics of the Secondary Reaction Zone (SRZ) formed at the interface between the Pt-Aluminised coating and 4 th generation Ni-base superalloy substrates have been investigated. Three alloys with systematically varying Ru content in the range of 2-5wt% were studied. Each alloy was tested us…
After thirty-one years of continuous cropping of maize-wheat in an acid Alfisol, the effect of different mineral fertilizers with or without amendments was studied on different forms of potassium. Continuous application of chemical fertilizers and amendments improved all the potassium fractions in soil over control. I…
moisture-wicking, temperature-controlling characteristics and so on, warp knitted spacer fabric (in short WKSF) is moving into the cushion market, which is dominated by PU-foam and may be a popular cushion material used in furniture in the future. Therefore, the goal of this research is to provide a model that can pre…
This paper describes the tethering of ferrocene (Fc) onto polycrystalline gold electrodes by immobilized polyamidoamine (PAMAM) dendrimers films. The resulting electroactive surface provides a viable route for investigating quantitatively the host-guest binding of ferrocene with cyclodextrin (CD). In particular, elect…
In this contribution we explore the capability of biocompatible nanoparticles (NPs) of cationic amphiphilic cyclodextrins entangling the anionic hydrophilic 5,10,15,20-tetrakis(4-sulfonatophenyl)-21H,23H-porphyrin (TPPS) to facilitate photoinduced energy and electron transfer with suitable donor and acceptor guest mol…
A simple and general approach for controlling optical anisotropy of nanostructured semiconductors is reported. Our design involves the fabrication of liquid crystal devices with built-in semiconductor nanotubes. Quite interestingly, it is found that semiconductor nanotubes can be well aligned along the orientation of…
Parallel factor analysis (PARAFAC) was used to analyze data from the high throughput screening of an array of organometallic rhodium and iridium complexes as catalysts for the intramolecular hydroamination of 2-(2-phenylethynyl)aniline to give 2-phenylindole. The progress of the hydroamination reactions was monitored…