Materials Literature
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A series of core-shell type nanoparticle samples of Mn x Zn 1-x Fe 2 O 4 were prepared by auto-combustion technique with x=0.3, 0.5, 0.7, 1.0. Subsequent to the structural and electrical property investigation the samples were irradiated with gamma radiation for different time intervals using 60 Co source. A significa…
Single crystal orthorhombic phase molybdenum trioxide (α‐MoO 3 ) nanobelts with uniform width have been successfully prepared through a simple hydrothermal synthesis route at 180°C in the absence of any template, and are characterised using X‐ray diffraction, field emission scanning electron microscopy and transmissio…
The morphologies of graphene nanoribbons (GNRs) encapsulated in single-walled carbon nanotubes (SWNTs) are investigated using molecular-dynamics (MD) simulation. The GNRs are assumed to be hydrogen-terminated and formed by connecting polycyclic aromatic hydrocarbons, perylene or coronene molecules. The combined struct…
In the paper the spectroscopic properties of antimonygermanate glass co-doped with Yb 3+ /Ho 3+ has been investigated. Fabricated Yb 3+ /Tm 3+ /Ho 3+ co-doped glass is characterised by the emission of simultaneous multicolour upconversion luminescence. Strong blue 1 G4 3 H6 (Tm 3+ ), green 5 F4 5 I8 (Ho 3+ ) and red 5…
Titanium dioxide nanofibres (TiO2) were intratracheally instilled in dose of 4 mg/0.2 mL saline solution per animal (Wistar rats). After 48 hours and 14 days the animals were exsanguinated (under i.p. thiopental narcosis), bronchoalveolar lavage (BAL) was perfomed and cells from BAL fluid were isolated. Following infl…
Co 2+ substituted Mg-Mn nanoferrites having formulae Mg0.9Mn0.1CoxFe2-xO4, where x = 0.0, 0.1, 0.2 & 0.3, have been prepared for the first time by solution combustion technique. The magnetic properties of nanoferrites such as M-H, initial permeability (μi) and magnetic loss tangent (tan δ) have been investigated as a…
Abstract It is shown that chromium distribution in the metal base of high-chromium cast irons depends on manganese content. According to the X-ray micro-spectral analysis data with the increase of manganese content from 0.72 to 6.49% chromium content decreased in the near-carbide zones. At the same time chromium conte…
Partial Discharge (PD) detection and diagnostics is an established tool to test the condition of the insulation in HV-facilities. One basic question while performing PD measurements is the one concerning the type and location of the defect. Under AC stress there are several instruments to interpret the measured PD, mo…
Single crystals of (Na 0.55 K 0.45 )(Nb 0.995 Mn 0.005 )O 3 have been grown by a floating zone method in N 2 and decompression atmosphere to avoid alkaline metal volatilization on the SrTiO 3 material base. The variation of their ferroelectric domain structure and the chemical composition of the grown crystal in the g…
This paper deals with the system design for integrating Si and SiC power dies along with thermo-electric coolers and phase change materials in order to thermally manage transient overloads occurring during operation for motor drive application. Different double-sided cooling designs are evaluated to take the best of e…
In a vehicle's internal combustion engine, about 30% of the primary energy is discharged as waste heat in the exhaust gases. Waste heat recovery (WHR) is a noticeable promising application of thermoelectric power generation (TEG). This is essentially a case of mobile cogeneration where a vehicle utilizes a significant…
Millimeter-sized cobalt doped rutile crystals with a bi-pyramidal shape are obtained by chemical vapour transport using scroll-type H2Ti3O7 nanotubes as a precursor in which Co2+ ions are introduced by a simple ion exchange method prior to the growth. Despite the low concentration of Co2+ dopants (5 × 1019 cm−3), the…
The inhibition performance of the 3-bromo-2-phenylimidazol[1,2- α] pyridine (BPP) on mild steel in normal hydrochloric acid medium (1 M HCl) at 298 K was tested by weight loss, potentiodynamic polarisation and electrochemical impedance spectroscopy (EIS) techniques. This organic compound inhibits the acidic corrosion…
Dew water is water vapour that passively condenses from air. Once properly collected, it can provide a useful supplementary water resource for plants and humans. Its production can be significantly improved by using specific materials and particular geometry. In this context, new shapes for dew collectors arepresented…
Effect of blending camel kid hair with merino wool on performance of resultant yarn and fabric has been studied. Camel hair (CH) has been blended with merino wool (M) in three different ratios, viz. 25:75, 75:25 and 50:50 on khadi hand spinning system. Knitted fabric samples are then prepared on circular hand knitting…
The discovery of the first petroleum off-shore fields 30 meters below sea level in the Brazilian coast in 1968 stimulated the development of new technology for oil extraction and production in increasing water deepness. Outstanding levels such as 6000 meters were expected for oil extraction in the offshore pre-salt re…
Nanobiotechnology is an emerging biological branch of nanotechnology. Application of nanoparticles with specific size and shape in biology has already shown unforeseen and interesting results. A study was conducted to evaluate the therapeutic potential of phytogenically derived aloin mediated nanosilver particles (AAg…
In this paper, we show that affine extensions of non-crystallographic Coxeter groups can be derived via Coxeter-Dynkin diagram foldings and projections of affine extended versions of the root systems E8, D6, and A4. We show that the induced affine extensions of the non-crystallographic groups H4, H3, and H2 correspond…
Determination of 1, 1-dimethylhydrazine (DMH) in air is carried out by spectrophotometry, GC or HPLC analysis, but in this study DMH was analyzed by a gas sensor based on nanostructure conducting polyaniline. Determination of DMH has been done very simplely and quickly in recent work. Electrically conductive fibers ha…
A small-volume reaction cell for catalytic or photocatalytic testing of solid materials at pressures up to 1000 Torr has been coupled to a surface-science setup used for standard sample preparation and characterization under ultrahigh vacuum (UHV). The reactor and sample holder designs allow easy sample transfer from/…