Materials Literature
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The removal characteristics for aromatic and aliphatic VOCs by electron beam (EB) were discussed in terms of several removal variables such as initial VOC concentration, absorbed dose, background gas, moisture content, reactor material and inlet temperature. It was reviewed that only reactor material was an independen…
Abstract Eighteen strains of diatoms isolated from different phytoplankton and microphytobenthic assemblages in the Gulf of Gdańsk (Baltic Sea, Poland) and maintained at the Culture Collection of Baltic Algae (CCBA) were investigated for their species identifications. The latter were tested by phylogenetic analyses of…
Effect of area density, fabric type, source intensity, number of layers, distance of fabric from sound source, distance of fabric from the receiver and fibre type on sound reduction of various needle-punched nonwoven fabrics has been studied in an indigenously fabricated equipment. Nonwoven fabric shows higher sound r…
We report a spectroscopic study about the energy transfer mechanism among silicon nanoparticles (Si-np), both amorphous and crystalline, and Er ions in a silicon dioxide matrix. From infrared spectroscopic analysis, we have determined that the physics of the transfer mechanism does not depend on the Si-np nature, find…
Amorphous metal core dry-type distribution transformers have a significant place in today power market since they exhibit 60-70% lower no-load losses when compared to the standard steel based transformers. At typical loading regimes these losses are the most significant ones for a distribution transformer. In order to…
In this paper, we experimentally study the deformation and break-up of a micron-sized polydimethylsiloxane drop in a refractive-index-matched suspension of polymethylmethacrylate particles undergoing a planar hyperbolic flow. The particles produce both short-ranged stochastic effects and macroscopic mean-field effects…
Realizou-se o levantamento florístico das espécies de diatomáceas perifíticas incluídas em Fragilariales, Eunotiales, Achnanthales e Gomphonema Ehrenberg, em uma represa do Rio Itaqui, localizada no município de São José dos Pinhais, PR. Lâminas de vidro foram utilizadas como substrato, as quais permaneceram submersas…
Chitosan biguanidine hydrochloride (CGH) has been synthesized by the guanidinylation reaction of chitosan with dicyandiamide. Its synthetic mechanism was discussed. The structures of CGH were characterized by FT-IR and 13 CNMR. In this study, we used citric acid (CA) as a crosslinking agent, mixed with CGH to perform…
An arbitrarily asymmetrical cloak with nonsingular and homogeneous parameters is obtained by dividing an arbitrary N -sided polygonal region into N triangular regions, applying an independent twofold spatial compression, and smoothing the inner boundary of the polygonal cloak. In each triangular region, a small line s…
Reactive coupling of functional polymer chains has been reported to be 3 orders of magnitude slower at static interfaces than under mixing conditions, and the reaction rates under mixing are close to the rates measured in homogeneous melts [Jeon et al. Prog. Polym. Sci. 2005, 30, 939]. However, due to the complexity o…
A taxonomical study of 15 Rhoicosphenia species based on light and scanning electron microscope was performed. The genus Rhoicosphenia is characterized by frustule heterovalvy, with a fully developed raphe on the concave valve (referred also as R valve) and reduced raphe on the convex valve (referred as D-valve). One…
The heat capacity of xenotime YPO4(c) was measured by adiabatic calorimetry at 4.78–348.07 K. Our experimental and literature data on H 0(T)-H 0(298.15 K) of Y orthophosphate were utilized to derive the C 0 (T) function of xenotime at 0–1600 K, which was then used to calculate the values of thermodynamic functions: en…
Highly efficient yellow–green‐emitting SrSi 2 O 2 N 2 :0.02Eu 2+ phosphor with a well‐dispersed and uniform morphology was synthesized by a direct silicon nitridation method. The related synthesis parameters including soaking temperature, holding time, silicon source, gas species, and flow rate, have been studied, res…
We investigate confined shear thickening suspensions for which the sample thickness is comparable to the particle dimensions. Rheometry measurements are presented for densely packed suspensions of spheres and rods with aspect ratios 6 and 9. By varying the suspension thickness in the direction of the shear gradient at…
The primary challenge in the delivery of a drug to a tumor site is to target the anticancer drug specifically into and around tumors at concentrations that will decrease their growth and/or viability. Excellent vehicles to achieve targeted drug delivery are magnetic nanocarriers. An approach to accomplish this objecti…
In presented work we report results of simple and viable method for producing Au/CNT composites. Chemical composition and crystallographic structure of the Au/CNT composites was confirmed by X-ray diffraction measurements, while transmission and scanning electron microscopy were used to characterize the morphology of…
In this article, we study laminated bio-composites that were reinforced with empty fruit bunches. Five-ply veneer laminated bio-composites were prepared by alternately arranging oil palm trunk veneer and empty fruit bunch mat. Composites were made with a gluing layer of 250 or 450 g/m 2 of phenol formaldehyde. The mec…
In this study, a synthetic layered double hydroxide modified with chloride ions (LDH-Cl) was employed for the removal of phosphorus from wastewaters. A series of phosphate adsorption experiments demonstrated that the adsorption capacity of LDH-Cl was described well by the three-parameter isotherm model (Langmuir–Freun…
A closed cycle cryostat intended for optical and Mössbauer investigations in the temperature range 4.2–300 K is described. Samples are cooled owing to the operation of a two-stage closed-cycle cryogenic refrigerator (CR) based on the Gifford-MacMahon cycle (with a refrigerating capacity of 1 W at T = 4.2 K at the seco…
Owing to hydrophilic behavior lignocellulosic fibers, e.g. Agave is unacceptable in various fields of applications. In the present communication attempts have been made to enhance hyrdrophobicity of these fibers through surface modification using methyl methacrylate as vinyl monomer. The grafting reaction initiated by…