Materials Literature
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PURPOSE: To determine whether there are differences in the distribution of ionic and nonionic gadolinium-based contrast agents by evaluating contrast enhancement of the physis, epiphyseal cartilage, secondary ossification center, and metaphysis in the knees of normal piglets. MATERIALS AND METHODS: Following approval…
Abstract Since the past few decades, environmental issues have become a serious concern in society. It is a requisite for the industry to minimize waste, in order to protect the environment from being polluted. The term waste here comprises processing waste and post-consumer waste. The amount of processing waste shoul…
High permittivity grainy materials such as ferroelectric and related perovskite ceramics and thin films, in which grain boundaries and/or microscopic cracks occupying very small fraction of the sample volume can result in strong reduction of permittivity and increase of effective phonon frequencies. It is shown how th…
ZnO/ITO/ZnO sandwich structure films were fabricated. The effects of buffer layer on the structure and optical properties of ZnO films were investigated by x-ray diffraction (XRD), photoluminescence, optical transmittance, and absorption measurements. XRD spectra indicate that a buffer layer has the effects of lowerin…
The information on the synthesis of new biologically compatible and biologically degradable DNA carriers based on starlike polymer conjugates of proteins (lysine dendrimers and their derivatives) and hyperbranched polyamino acids is reviewed. Their capacity to bind and compact DNA and to provide for transfection is di…
Reversible tuning of surface plasmon resonance (SPR) of Ag nanoparticles by temperature was achieved using a thermochromic VO2 as matrix. The SPR wavelength (λSPR) was significantly shifted from 506nm for Ag on sapphire to 1070nm for Ag embedded in VO2 at room temperature, giving a large sensitivity factor (ΔλSPR∕Δn)…
The thermomechanical behavior of damaged space shuttle tile thermal protection system is determined using the finite element method. The relative effects of damage on the thermal protection capability and the induced thermal stresses in the TPS are determined by comparing the thermal and structural response of the dam…
Nickel-Titanium (NiTi) alloys exhibit special mechanical properties known as shape memory effect and superelasticity. The first effect relates to the fact that after deformation at low temperature, the material regains its original shape after heating. The second effect denotes an unusual flexibility of the material t…
This paper describes state-of-the-art analysis of grain boundary populations by EBSD, with particular emphasis on advanced, nonstandard analysis. Data processing based both on misorientation alone and customised additions which include the boundary planes are reviewed. Although commercial EBSD packages offer comprehen…
Ecandrewsite-geikielite (Zn 1/2 Mg 1/2 TiO 3 ), ecandrewsite-pyrophanite (Zn 1/2 Mn 1/2 TiO 3 ), pyrophanite-geikielite (Mg 1/2 Mn 1/2 TiO 3 ), and ecandrewsite-pyrophanite-geikielite (Zn 1/3 Mn 1/3 Mg 1/3 TiO 3 ) titanates were synthesized at 900–1000°C at ambient pressure. All of the compounds adopt R — ilmenite-typ…
Dynamic light scattering spectroscopy has been used to determine the temperature dependence of the anchoring strength of the nematic liquid crystal 8OCB on DMOAP‐silanated glass surfaces inducing homeotropic alignment. Wedge‐type glass cells with known thickness profile starting from 150 nm to several microns have bee…
The subsolidus region of the Rb2MoO4-Er2(MoO4)3-Hf(MoO4)2 ternary salt system is studied using X-ray powder diffraction. A novel 5: 1: 2 triple molybdate, Rb5ErHf(MoO4)6, is found to form in the system. Crystals of Rb5ErHf(MoO4)6 are flux-grown under spontaneous nucleation conditions. The composition and crystal struc…
Native American medicinal plants are traditionally used to prevent and treat a variety of diseases, including cancer. These herbal preparations are alleged to have many biological activities, such as stimulation or suppression of immune responses and antiproliferative effects on cancer cells. In the present study, we…
Transesterification between a model thermotropic polyester (TTP) and polycarbonate (PC) was investigated during melt blending in a twin-screw mini-compounder at temperatures below and above the clearing temperature ( T cl ) of the TTP. For the investigation, a model TTP, poly[(phenylsulfonyl)- p -phenylene hexamethyle…
[structure: see text] An unprecedented V-shape (2.1.2.1) expanded porphyrin incorporating an extended pi-conjugated system is described. Its efficient synthesis relied on the use of a new peralkyl tetrapyrrolylquinoxaline building block that constitutes the ideal intermediate for the versatile preparation of new quino…
Pliocaenicus is a small, mainly fossil diatom genus that only rarely occurs in modern freshwater environments in eastern Russia. The only extant taxon of this genus, Pliocaenicus costatus, was studied from phytoplankton samples collected in Lake El’gygytgyn, a deep, ultraoligotrophic and low-conductivity crater lake i…
Electromigration has been characterized in via-terminated interconnect lines with additional vias in the middle, creating two adjacent segments that can be stressed independently. The mortality of a segment was found to depend on the direction and magnitude of the current in the adjacent segment, confirming that there…
The paper presents a review of the most important measurement methods applied to determination of yarn attributes and a project of new automatic computer method of yarn image processing and analysis. The yarn feature that we examined is hairiness because of its importance for textile industry. Proposed construction of…
In this paper, we present an improved RNA model considering the iron loss. Furthermore, we examine a proper excitation direction for a 6/4-pole SR motor.
In this research, a dc thermal plasma reactor was used to produce ZnO nanorods with a diameter of about 30nm and a length of 100–200nm. In the photocatalytic study, visible light absorption of the ZnO nanorods was achieved by doping up to a few thousands ppm of nitrogen. The nitrogen-doped ZnO nanorods under the visib…