Materials Literature
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The growing interest in sustainable construction materials has brought back the spotlight to the use of bio-fibers as reinforcement of concrete. Bio-fiber reinforced concrete elements can achieve mechanical properties comparable to traditional products with added values as coming from renewable sources, being less exp…
MoS2 nanosheets were prepared by solid-state reaction, using a chemical vapour deposition furnace. The products were characterized by scanning electron microscopy, transmission electron microscope, energy dispersive spectrometer, Raman shift and atomic force microscope. The results show that the obtained MoS2 nonoshee…
Nephrogenic systemic fibrosis is a fibrosing disorder of the skin that develops in patients with advanced renal failure. It mostly presents with progressive hardening or induration of the skin of the extremities. Systemic involvement is also known to occur in this entity. Exposure to gadolinium contrast for radiologic…
In this paper, ammine lithium borohydride (LiBH(4)·NH(3)) was successfully impregnated into multi-walled carbon nanotubes (CNTs) through a melting technique. X-ray diffraction, scanning electron microscopy, Brunauer-Emmett-Teller, and density measurements were employed to confirm the formation of the nanostructured Li…
Monodispersed spherical particles of zirconium-containing titania-octadecylamine with the size of 300–400 nm and CV value of around 5% were synthesized by a sol–gel reaction in the microreactor. Octadecylamine played a roll as a porogen as well as morphological template of spherical particles. The incorporation of zir…
The electronic structure of [Fe(TMP)F(2)], which is formally a one-electron oxidation equivalent above [Fe(III)(TMP)F(2)](-), has been examined in solution by (1)H NMR, UV-Vis, and Mössbauer spectroscopy. In CD(2)Cl(2)-CD(3)OD solution at 193 K, the pyrrole-H and m-H signals appeared at 128.2 and 116.7 ppm, respective…
Ultrafast excited-state annihilation in a homodinuclear ruthenium complex is observed. This coordination compound constitutes a model system for approaches towards artificial photosynthetic systems. The observation of pump-intensity dependent triplet-triplet annihilation highlights the importance of considering variou…
The 0.55Pb(Ni1/3Nb2/3)O3–0.45Pb(Zr0.3Ti0.7)O3 (0.55PNN-0.45PZT) ceramics were prepared by conventional solid state reactions. The effects of calcining temperature on the particle size and piezoelectric properties of 0.55PNN-0.45PZT piezoelectric ceramics were investigated. The particle size and crystallinity of 0.55PN…
Two new quaternary thioborates, PbSbBS(4) and PbBiBS(4), have been synthesized from solid-state reaction methods at temperatures from 1073 to 1123 K in evacuated sealed quartz tubes. The crystal structures have been determined by means of single crystal X-ray diffraction and they both crystallize in the P2(1)/m space…
Yttria-doped bismuth oxide (YBO) powders were synthesized by ammonium carbonate coprecipitation for the preparation of electrolytes of an intermediate temperature solid oxide fuel cell (IT-SOFC). The starting salts were yttrium and bismuth nitrate. The crystal structures and the morphological characteristics of the pa…
The octaferrocenyl cluster [Ag8(SeCH2Fc)8(PPh3)4] 3 can be prepared in good yield from FcCH2SeSiMe31 and solubilized AgOAc. The reagent 1 and disubstituted 1,1′-fc(CH2SeSiMe3)22 are themselves prepared in good yield from Li[SeSiMe3] with FcCH2Cl and fc(CH2Cl)2, respectively. Reaction of 2 with [Zn(OAc)2(tmeda)] yields…
Dielectric properties of the hydrogen-bonded material, 5-bromo-9-hydroxyphenalenone (C(13)H(7)O(2)Br; BrHPLN), are investigated theoretically by means of electronic structure calculations and Monte Carlo simulations. The density functional calculations of BrHPLN crystals have revealed that the polarization per one mol…
Flexoelectricity, an electromechanical coupling effect, exhibits two opposite electromechanical properties. One is the direct flexoelectric effect that mechanical strain gradient induces an electric polarization (or electric field); the other is the inverse flexoelectric effect that polarization (or electric field) gr…
Carbon nanotubes can be grown vertically from a substrate to form dense forests hundreds of microns tall. The space between the nanotubes can then be filled with carbon using chemical vapor deposition to create solid structures. These infiltrated structures can be detached from the substrate and operated as single-pie…
A class of α-furanyl dipyrrins 2 were prepared by refluxing THF solutions of DDQ adducts 1 with the appropriate alcohols in the presence of AlCl 3 and further subsequent reaction of the cyano-group results in the formation of an imino ether upon MeOH addition.
We present a semiconductor gas sensor based on mesoporous In 2 O 3 (m-In 2 O 3 ). The m-In 2 O 3 was successfully fabricated by a simple sol-gel process, using block copolymer PE6800 as a soft template. The results of gas sensing reveal that the m-In 2 O 3 prepared at room temperature shows higher resistance, which pl…
The effective utilization of coal bed methane (CBM) is very significant for energy utilization and environmental protection, reducing significantly greenhouse gas methane emission. In this paper, La1−xErxCoO3 perovskite (0 ≤ x ≤ 0.4) catalysts for the catalytic deoxidization of CBM were prepared by a co-precipitation…
Influence of wet chemistry treatment on the mechanical performance of natural fibres The paper presents determination of the effect of various chemical treatment on the strength of 288 tex jute yarn arisen from the plain weave fabric produced by LENTEX, Poland. The yarn was put to alternative treatments in: NaOH and K…
Artificial pit electrodes have been used to measure the pitting dissolution kinetics in the anodic limiting current region for a range of Ni-22Cr-xMo (wt %) alloys with x = 0, 3, 6, 9 and 13. Most of the data were obtained at 25–90 °C using 1 M NaCl solution. Type 316 stainless steel and pure nickel were used for comp…
Processing of hemp for fiber involves mechanical separation of the outer fiber layer from the inner core of the hemp stem. Existing processing equipment is often not effective due to lack of information on the mechanical properties of hemp fiber and core. In this study, direct shear tests of hemp fiber and core were p…