Materials Literature
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The detonation of ammonium nitrate based compositions like emulsion explosives mixed with metal particles was experimentally investigated. Aluminum powder with a mean particle size of 6 μm was used, and the mass concentration of aluminum on the explosive charge ranged from 0 to 30% wt. The values of the detonation vel…
With current technology, UV filters are essential to ensure long-term dye-sensitized solar cell (DSC) stability. Blocking photons, however, will have an obvious effect on device performance and upon its incident photon-to-current conversion efficiency (IPCE). Filters have been applied to DSC devices with a range of cu…
We have studied titanium oxide (TiO 2 ) nanotube films formed by anodizing a metal titanium (Ti) film deposited on a silicon dioxide layer in an ethylene glycol solution of water and ammonium fluoride (NH 4 F). We have systematically examined the influence of water and NH 4 F contents on the nanotube formation and the…
High temperature oxidation causes degradation of materials in aircraft, marine, industrial and land base gas turbines. To obviate this problem, oxidation behavior of Ni and Co based superalloys viz superni 600 and superco 605 (Midhani grade) has been studied in air at 900C. Both superalloys go through cyclic oxidation…
Melt-synthesis yielded lithium-fluorohectorites (Li-hect(x)) with variable layer charge (x = 0.4, 0.6, 0.8, 1.0). Counterintuitively, both tactoid diameter and intracrystalline reactivity increased concomitantly with increasing layer charge. This way hectorites with very large diameters were obtained (d(50%) = 48 μm)…
A 3-trifluoroacetylaminophthalimide selectively distinguished LiI from other alkaline-metal iodides and lithium halides by a marked fluorescence colour change, from orange-yellow to sky-blue, subsequent to 254 nm photolysis.
The metathesis reaction of anhydrous EuCl(3) with sodium salt of bulky β-diketiminato NaL (L = [N(2, 4, 6- Me(3)C(6)H(2))C(Me)](2)CH(-), L(2, 4, 6-Me3); [N(2,6-(i)Pr(2)C(6)H(3))C(Me)](2)CH(-), L(2, 6-ipr2) and [(2, 6-(i)Pr(2)C(6)H(3))NC(Me)CHC(Me)N(C(6)H(5))](-), L(2, 6-ipr2)(Ph)) in THF at 60 °C afforded the correspo…
The kraft pulping process was evaluated in this study as a pretreatment of Eucalyptus globulus for bioethanol production. Wood chips were pretreated under different pulping conditions (155C and 165C; 15 and 20 % alkali active AA, 15-60 min). A total of 12 pulps were obtained, with pulp yields ranging from 49 to 57%. G…
The effect of the addition of zirconia in the photocatalytic behaviour of titania is analysed. In order to increase the ways for reagent and product diffusion in the material, a sol-gel hydrothermal synthesis route using Tween-20 as a directing agent to obtain a hierarchical macro-mesoporous structure is proposed. Nan…
We evaluated the consumption of hydrogen gas at the anode of a microbial electrolysis cell (MEC) and characterized the significance of new interactions between anode respiring bacteria (ARB) and homo-acetogens. We demonstrated the significance of biofilm limitation for direct consumption of H(2) over acetate by ARB, u…
Among different imaging modalities, Positron Emission Tomography (PET) gained importance in routine hospital practice depending on ability to diagnose diseases in early stages and tracing of therapy by obtaining metabolic information. The combination of PET with Computed Tomography (CT) forms hybrid imaging modality t…
The purpose of this research is to produce micro parts reinforced by unidirectional short fibers using laser stereolithography. Ferromagnetic short fibers are added to a liquid photopolymer and a magnetic field is then applied to the liquid photopolymer, aligning the axes of the short fibers along the magnetic field d…
The surface modification of various nanoparticles with silica has been exploited to increase their utility for bioapplications. However, silica encapsulation through conventional methods requires long reaction times (hours to days). Herein, we demonstrated that uniform and spherical silica encapsulation of magnetic na…
This work aims at investigating the influence of titanium addition on behavior of medium carbon steel. Three types of medium carbon steel with different titanium content and one reference steel titanium free were produced in 100 kg induction furnace. Titanium addition was increased up to 0.230%. The produced steels we…
Acoustic fields of powerful ultrasound sources with Gaussian spatial apodization and initial excitation in the form of a periodic wave or single pulse are examined based on the numerical solution of the Khokhlov-Zabolotskaya-Kuznetsov equation. The influence of nonlinear effects on the spatial structure of focused bea…
This work reports on a general route to synthesize inorganic nanoparticles. Using molten ε-caprolactam (CL, melting point = 69.2 °C) as a nonaqueous solvent and a stabilizer, various types of inorganic nanoparticles such as metal oxide, metal hydroxide and sulfide are readily synthesized via precipitation reactions of…
Adsorption behaviors of hydroxyl-terminated alkanethiol, 3-mercapto-1-propanol (MPO), and arenethiol, 4-mercaptophenol (MPH), on Au(111) electrodes were studied by cyclic voltammetry (CV) and in situ scanning tunneling microscopy (STM). The effects of the molecular structure and the chain length on the characteristics…
This study was carried out to explore environmental compound such as nicotine can cause adverse effect on chondrogenic differentiation of bone marrow mesenchymal stem cells (BMSCs). Rat BMSCs were capsulated in alginate beads incubated with a chondrogenic differentiation medium and while chondrogenic differentiation o…
CdIn2s4, ZnIn2S4 and AgIn5S8 were prepared by ultrasonic spray pyrolysis method without using templates which demonstrated a general route for the synthesis of ternary sulfides submicrospheres.
Copper pitting corrosion can lead to premature plumbing failures, and can be caused by aggressive potable waters characterized by high pH, free chlorine residual and low alkalinity. In such waters and under continuous flow, certain inhibitors including phosphate, silica or natural organic matter may greatly reduce pit…