Materials Literature
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Nine samples of sewage sludge from different paper mills of New Delhi were treated with ultrasonic waves of two different frequencies, viz., 35 kHz and 130 kHz for different time periods (5, 10, 20 and 30 min). Treated sewage sludge was then evaluated with different parameters, viz., Chemical Oxygen Demand(COD), Bioch…
Slip deformation in Cu-9at.% Al symmetric type bicrystal models subjected to tensile loading is investigated by a finite element crystal plasticity analysis code. Accumulation of geometrically necessary dislocations (GNDs) and statistically stored dislocations (SSDs) are studied in detail. Results of the analysis show…
color measurements for the classing of U.S. cottons are normally performed on the Uster ® high Volume instrument (hVi), which yields two color parameters specific to cotton—Rd (reflectance) and +b (yellowness). Since Rd and +b do not readily relate to other well known and globally recognized color systems (e.g., L*a*b…
Zirconium (Zr) and 12 mass% chromium containing ferritic stainless steels with Zr oxide dispersoids have been developed. In this study, the relationship between the process conditions and the metallurgical and mechanical properties were investigated. 12Cr-1Zr steel was consolidated with a grain size of about 1 μm by e…
Owing to an increased competitive situation in many metalworking segments, a more intense focus is directed on lead time reduction and general cost savings. An adequate tooling performance in relation to the production length is of vital importance here. Cold-work tool steels can be designed to resist various types of…
The main focus of this paper is the assessment of release rates of chromium, nickel, iron and manganese from manganese-chromium stainless steel grades of low nickel content. The manganese content varied between 9.7 and 1.5 wt% and the corresponding nickel content between 1 and 5 wt%. All grades were exposed to artific…
A simple method was developed for the synthesis of novel macroporous silica cages with tailored pore architecture and high thermal stability. The silica cages possess anamorphic spherical morphology and narrow particle size distribution (∼1.5 µm), consisting of numerous channels interconnected with one another to form…
Kenaf dust filled chitosan biocomposites have been prepared using a solution blending method. Diluted acetic acid was used as medium to dissolve the chitosan powder. Kenaf dust particles were dispersed in the chitosan solution using a high speed homogenizer. Chitosan biocomposites with five different compositions of k…
We present a study of the preparation and structural characterization of granular Ag‐ZrO 2 , Co‐ZrO 2 , and Au‐ZrO 2 thin films grown by pulsed laser deposition (PLD) in a wide range of volume fraction x of metal (0.08 < x Ag < 0.28, 0.06 < x Co < 0.40, and 0.08 < x Au < 0.55). High‐resolution transm…
Stokes drag on the (sub)micrometre scale plays a key role in phenomena ranging from Brownian motion to the rheology of particulate suspensions. We report the first measurement of the direction dependent Stokes drag in a nematic liquid crystal of colloidal rods, where the viscous forces are of equal importance to the e…
A series of study has been performed on the metal hydride particle beds of Ti0.15Zr0.85Cr0.9Fe0.6Ni0.2Mn0.3Cu0.05 (MH-1, using for heat source), Ti0.73Zr0.27Cr1.2Fe0.3Ni0.1Mn0.4Cu0.05 (MH-2, using for cooling load) to measure the effective thermal conductivities. The effective thermal conductivities of activated and o…
Egg-shell, egg-yolk and egg-white types of Co/SiO2 catalysts were prepared by utilizing entrapped air to inhibit the entrance of impregnation or leaching solution into the cores of catalyst pellets during the preparation procedure; the entrapped air played the important role because the capillary pressure was reduced…
The objective is to characterize the effects of SiO2 nanoparticles on the mechanical properties of the thermoplastic polypropylene (PP) blended with two different styrene-ethylene-butadiene-styrene tri-block copolymer (SEBS) at the intermediate and high strain rates. Tensile tests are conducted at the nominal strain r…
Ti-6Al-7Nb alloy has been developed for more suitable biomaterial in place of Ti-6Al-4V alloy because of vanadium toxicity to human body. In this study, the metal injection molding process was applied to produce the Ti-6Al-7Nb alloy compacts using alloy powder. For comparison, the mixed elemental powders of Ti, Al and…
Unilateral breast edema can be worrisome for inflammatory breast cancer. We review the literature and present a clinical case of a patient presenting with features concerning for inflammatory breast cancer, but in fact were the result of dialysis access related venous congestion of the breast.
A combination of X-Ray Magnetic Circular Dichroism and PhotoEmission Electron Microscopy (XMCD-PEEM) was applied to the magnetic domain analysis of Nd-Fe-B sintered magnets. The XMCD-PEEM high-resolution images revealed both the magnetic domain structures and the microstructural morphologies. In the thermally demagnet…
The analysis of diketodipyrrole and 2,5-diketopiperazines, detected as pyrolysis products from collagen, which is a main component of natural leathers, by pyrolysis gas chromatography-mass spectrometry (Py-GCMS), was examined for the development of a forensic identification method of small bits of the natural leathers…
A new strategy for implementing the concept of a "micro genetic algorithm" within a standard genetic algorithm (GA) procedure is proposed. The strategy operates by applying criteria to test for the occurrence of stagnation within the population of a standard GA calculation, and triggering the micro-GA procedure whenev…
To evaluate the capability of candidate materials such as alumina (Al2O3) and yttria stabilized zirconia (YSZ) ceramics for use as environmental barrier coatings (EBCs) on C/C composites, the oxygen and water permeability through each oxide ceramic were measured in dry and/or wet atmospheres at ultra-high temperatures…
Vertically oriented carbon nanotube (CNT) arrays can increase real contact in thermal interfaces and efficiently transfer heat between the mating solids. In this study, a paraffin wax that changes phase at approximately 50°C was applied to interfaces with CNT arrays directly synthesized on one side of the interface, a…