Materials Literature
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The molecular dynamics simulation with the use of the empirical Tersoff potential is applied to study the thermal characteristics of carbon nanotubes (CNTs). A thermal reservoir is devised to control the temperature and to exact the heat flux input. The quantum effect defining the precise temperature from the absolute…
SiOC glass monoliths possessing hierarchical porosity were produced by a one‐pot processing method. Periodic mesoporous organosilica (PMO) particles were embedded into a foamed siloxane preceramic polymer. After pyrolysis at 1000°C in inert atmosphere, open celled, permeable SiOC ceramic monoliths with a high amount o…
A sol−gel method for the synthesis of MgAl layered double hydroxides is presented. The sols thus obtained were submitted to several hydrothermal treatments, in presence or absence of water, in order to examine the thermal evolution of specific physicochemical properties, such as morphology, crystal size, basicity, and…
In this research, four different protein based textile materials (sheep, goat and Angora rabbit wools and silk) were dyed with sumac and the effects of proteases on their dyeing properties were investigated. According to the experimental results, it was observed that these protein based fibers could be dyed evenly wit…
Abstract The equiatomic rare earth metal zinc arsenide oxides RE ZnAsO ( RE = Y, La–Nd, Sm, Gd–Er) were synthesized in well crystallized form from the elements, arsenic, and ZnO in NaCl/KCl fluxes in sealed silica ampoules. The samples were characterized by powder and single‐crystal X‐ray data. HoZnAsO and ErZnAsO are…
Abstract Gute Mischung : Der pentagonale Polyoxomolybdat‐Baustein [Mo 6 O 21 ] n − vereinigt sich mit anderen Mo‐, V‐ und Sb‐haltigen Ionen zu einem orthorhombischen Mo‐V‐Sb‐Oxid. Die erste Einkristall‐Röntgenstrukturanalyse eines orthorhombischen Mo‐V‐Mischoxids, das als Katalysator für die selektive Oxidation leicht…
The aim of this study was to investigate how morphology of fibers is affected by plasma during the process of decolorization by a low-pressure RF plasma (gas, treatment time, and power were varied) and atmospheric pressure industrial corona (number of passages and power). CIE LAB colorimetric system was used for deter…
With a little kelp from my friends: In response to biotic and abiotic stress, the brown algal kelp Laminaria digitata releases volatile fatty acid aldehydes under laboratory conditions and in its natural environment (red). In response to 4-HHE treatment, L. digitata releases (13S)-HOTrE (green). These results support…
A unifying theoretical description of the magnetoelectric effects found in ${\text{TbMnO}}_{3}$ is proposed. The phase diagrams at zero and applied magnetic fields are worked out. They reveal that the ``giant'' dielectric effects observed in the spiral phase of ${\text{TbMnO}}_{3}$ result from an effective bilinear co…
Founded in 1683 in Leiden, the Netherlands, Brill is a leading international academic publisher in the Humanities, Social Sciences, International Law, and Biology. With offices in the Netherlands, Germany, Austria, the USA and Asia, Brill today publishes more than 360 journals and 2,000 new books and reference works e…
Abstract Poly( N ‐(4‐(2,2′:6,2″‐terpyridyl)phenyl)imino‐2,7‐fluorenylene P1‐2 was prepared upon palladium‐catalyzed polycondensation of 2,7‐dibromo‐9,9‐di‐ n ‐hexylfluorene 1 and 4′‐(4‐aminophenyl)‐2,2′:6,2″‐terpyridine 2 with 80% yield. MALDI–TOF spectroscopy indicated a maximum degree of polymerization of 14, the mo…
Abstract Bindung an Bakterien : Diskotische Moleküle aggregieren zu columnaren supramolekularen Polymeren, die über Mannoseeinheiten, die an ihrer Peripherie angebracht sind (orange; siehe Bild), eine starke polyvalente Bindung an Bakterien zeigen. Die reversible Bildung der supramolekularen Polymere ermöglicht ein ei…
Our recent investigations on the valence electronic structure of the icosahedral ${\text{Al}}_{70}{\text{Pd}}_{21}{\text{Mn}}_{9}$ quasicrystals by means of scanning tunneling microscopy and spectroscopy at low temperatures (5 K) have revealed signatures of a spiky local density of states near the Fermi energy. The lo…
The anelastic spectrum of ammonia borane (NH 3 BH 3 ) was measured in the temperature range between 1.3 and 300 K. The structural phase transition near 220 K is accompanied by a substantial variation of the elastic modulus (25−30%) and a spike of the elastic energy dissipation. The order−disorder phase transformation…
We propose a system that can store molecular hydrogen in densities up to $\ensuremath{\sim}100\text{ }\text{g}/\text{L}$. Our ab initio calculations predict the existence of an oxidized calcium dihydrogen complex, which holds up to eight ${\text{H}}_{2}$, i.e., $\text{Ca}(\text{ion}){({\text{H}}_{2})}_{8}$. The dihydr…
The water-soluble luminescent CdSe quantum dots were prepared by ligand exchange with triethanolamine (TEA). Oxygen can reversibly enhance the fluorescence of the synthesized quantum dots (TEA-CdSe-QDs) in aqueous solution. Nitric oxide radical (NO) can react easily with dissolved oxygen in water and was found to have…
This paper reports a novel helix-like ZnO nanostructure with several tens of nanometres in thickness synthesized on a gold-coated Si substrate by thermal evaporation of zinc sulfide powder at 1020°C. Transmission electron microscope characterization shows that as-synthesized ZnO nanohelices extend along [01 1] directi…
Ni/Al 2 O 3 catalysts were prepared by the impregnation method (IM), sol−gel method (SG), and modified sol−gel method (MSG). The effects of the preparation methods on the catalytic performances in the partial oxidation of methane (POM) to syngas were investigated. The catalysts were characterized by N 2 -adsopriton, X…
Nanotoxicology and nano-risk have been attracting increasing attention of toxicologists and regulatory scientists as the production of nanomaterials increases worldwide (Oberdorster et al. in Environ Health Perspect 113:823-839, 2005). In general, nanotoxicology is associated with manufactured nanomaterials. In atmosp…
Bimetallic nanoparticles (NPs) have wide applications in electronics, photonics, and catalysis. However, it is particularly challenging to synthesize size-controllable alloy nanoparticles (e.g., NiAu) with bulk immiscible metals as the components. Here we report the synthesis of isolable NiAu alloy nanoparticles with…