Materials Literature
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The propagation of light in nonperiodic quasicrystals is studied by ultrashort pulse interferometry. Samples consist of multilayer dielectric structures of the Fibonacci type and are realized from porous silicon. We observe mode beating and strong pulse stretching in the light transport through these systems, and a st…
The optical response of ring-shaped gold nanoparticles prepared by colloidal lithography is investigated. Compared to solid gold particles of similar size, nanorings exhibit a redshifted localized surface plasmon that can be tuned over an extended wavelength range by varying the ratio of the ring thickness to its radi…
The residual heat removal system is an important safety system for nuclear reactors. Passive design of the residual heat removal system attracted more and more attention. Two new type passive residual heat removal systems, which have been used in multipurpose reactors developed in China, are introduced and the main ex…
The laws of variation of the flow stress (σ) and latent strain energy ( E s ) in the course of plastic deformation have been studied in the samples of a titanium-doped chromium-nickel steel (12Kh18N10T grade) before and after neutron irradiation to a dose of 5×10 22 m −2 (neutron energy E >0.1 MeV). The E s versus σ c…
Plastic packaging forms a significant portion of household waste, and PET soft drink bottles represent a major percentage of the waste. Consequently, PET bottle grade material makes up a significant portion of the feedstock in the recycling plant at Visy plastics. The end uses are theoretically many, however, there ar…
Abstract The redox behavior of porphyrin-Ru(bpy)3 conjugates is studied by means of spectroelectrochemistry. The redox potentials for the porphyrin freebase, zinc and manganese derivatives are measured and compared to the corresponding monomeric reference porphyrins. Among the porphyrin-Ru(bpy)3 conjugates, the mangan…
Abstract The significance of heat‐aging effects on low‐molecular‐weight polycarbonate has been studied by performing a two‐factor Analysis of Variance (ANOVA). Although this work was primarily motivated by the large experimental scatter observed in stress relaxation results for LMW 2608 (part I), the effect of heat‐ag…
Blends of high density polyethylene (HDPE) and chlorinated polyethylene (CPE) have been tested across the whole concentration range. Polyethylene is used to modify the properties of CPE in the elastomer industry, but modification of the properties of polyethylene with CPE is still not usual. Conventional mechanical te…
Two niobium mining facilities located at two different geological settings were selected as case studies for assessing the radiological impacts associated with mining and milling activities. The impacts were assessed both for operational and post-operational (future unrestricted use of the area) scenarios. The work me…
Corona treatment was applied to modify surface of general purpose polystyrene (GPPS) film to improve its molecular interaction with lacquers, paints and adhesives. Results of corona treatment unit energy (E) effect on changes in the contact angle of the film using water, glycerol, diiodomethane and a-bromonaphthalene…
The high-pressure carbon monoxide (HiPco) process for producing single-wall carbon nanotubes (SWNTs) uses iron pentacarbonyl as the source of iron for catalyzing the Boudouard reaction. Attempts using nickel tetracarbonyl led to no production of SWNTs. This paper discusses simulations at a constant condition of 1300 K…
False twisting by means of a friction disk unit is an efficient technology used worldwide to manufacture synthetic fiber yarns that are textured. This paper proposes a new theory to analyze the yam path and the friction force exerted on the running yarn over a single friction disk. We do not apply discrete methods, bu…
We report a significantly stronger suppression of the phonon contribution to the thermal conductivity in VOx than can be accounted for by disorder of the 16 % atomic vacancies present in VO. Since the transition from localized to itinerant electronic behavior is first-order and has been shown to be characterized by bo…
Polygalacturonic acid, calcium polygalacturonate, and samples of two cotton varieties are subjected to elevated temperatures for varying increments of time. The galacturonic acid residues of the heat-treated samples are quantified by digestion with pectinase along with EDTA, and the resultant solutions are analyzed by…
This paper reports on measurements of the acoustic, magnetic, and electrical properties and on an x-ray microprobe analysis of a La 0.825 Sr 0.175 MnO 3 single-crystal sample. The acoustic studies were made with a pulsed acoustic spectrometer operating on a 770-MHz carrier. The studies revealed anomalies in the dampin…
Abstract The basic principles of small-angle neutron scattering and the two-phase model, frequently used for the interpretation of scattering data, are presented. Some studies on phase separation in alloy single crystals serve to illustrate the possibilities of the method. Small-angle neutron scattering of Ni-rich Ni—…
In many applications of polymers, impact performance is a primary concern. Impact tests experimentally performed on molding prototypes yield useful data for a particular structural and impact loading case. But, it is generally not practical in terms of time and cost to experimentally characterize the effects of a wide…
One of the gaps of the modern solar-terrestrial physics is an absence of the permanent space monitoring of the soft X-ray and extreme ultraviolet radiation from the full disk of Sun. The permanent Solar Patrol at the main part of the ionizing radiation spectra 0.8-115 (119) nm does not exist. These measurements are ve…
The objective of this work was to examine the calcium concentration in the shells of naturally infected individuals of Lymnaea stagnalis. Calcium concentration in the water of lakes and in snail shells was examined by the EDTA method. Calcium concentration in the shells of infected snails was found to be higher than t…
Ferroelectric properties of ion-cosubstituted BIT thin films, (Bi4.00 − yLny)4-δ (Ti3.00-xXx)3O12 (BLnTX), with various lanthanoid (Ln: e.g., La3+, Nd3+, Pr3+, Sm3+) and higher-valent ions (X: e.g., V5+, Nb5+, Ta5+, W6+) were investigated to determine the optimum condition of the ion-cosubstitution. Ion-substituted BI…