Materials Literature
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The 200 kV focused electron beam in the convergent beam electron diffraction patterns mode in a transmission electron microscope (TEM) with field emission gun is able to drill holes in gold and silver decahedral nanoparticles. However, although they are done under the same circumstances, the holes are shapeless in the…
Critical performance of modern high strength linepipe is related to the ability of the steel to maintain mechanical properties in the weld heat affected zone (HAZ). The region most susceptible to mechanical property degradation is the coarse grained HAZ, however in multipass welds, the intercritically reheated CGHAZ (…
The structure of ZnO-catalyzed phenol–urea–formaldehyde (PUF) resin at different synthesis stages was analyzed by liquid 13C nuclear magnetic resonance spectroscopy. The results showed that the general structure of ZnO-catalyzed PUF resin was almost the same as the control PUF resin. Addition reaction between phenol a…
This paper compares a site specific quantitative risk analysis for a gas transmission pipeline using traditional “average” risk ranking methods to a more complex Monte Carlo analysis using a range of possibilities and consequences for the various areas of the site—each with their own probability. The comparison is bas…
Reliability-based design rules have been developed for the key serviceability limit states applicable to onshore pipeline including local buckling due to thermal expansion and excessive plastic deformation under hydrostatic test pressure. The design rules are characterized by three elements: the formulas used to calcu…
In this paper, the electrical and material properties of CuMn/silicon oxide (SiO2) and CuMn/tantalum (Ta)/SiO2were investigated, and an optimized concentration of Mn in the CuMn alloy as barrier layers in these two structures was also determined. CuMn alloy (0~10 atomic % Mn) deposited on SiO2and Ta were used in this…
Nanowires comprising a metal (Au) segment and a semiconductor segment (CdSe) were grown through an electrochemical process that allows the shape of the interface between the materials to be abrupt (planar) or to be tailored to form off-axis conical profiles. Polarized light was used to excite plasmons in the exposed e…
Dendrimers are globular polymers with well-defi ned molecular structures and polyfunctionalsurfaces. The ability to functionalize the surface of dendrimers with a rangeof chemical species and to tailor physicochemical properties has resulted in the explorationof dendrimers for a wide range of biomedical applications.…
Objective: The present work was undertaken with the aim to develop and validate a rapid and consistent RP-HPLC method in which the peaks will be appear with short period of time as per ICH Guidelines. The proposed method was simple, fast, accurate and precise method for the Quantification of drug in the dosage form, b…
Makrofol BL 2–4 is an extrusion film based on Makrolon polycarbonate. It comprises excellent die-cutting performance combined with high light transmission and moderate light scattering properties. It is a class of polymeric solid state nuclear track detectors which has many applications in various radiation detection…
In this letter the optical behavior as well as the thermal properties of CdSe quantum dots (QDs) capped with mercapto succinic acid (MSA) are studied and analyzed. CdSe QDs with an average particle size of 7.0 nm are prepared by a microwave irradiation method. The unique structure of MSA plays an important role in det…
The occurrence of low-frequency Electric Resistance Welded (LF-ERW) or Electric Flash Welded (EFW) line pipe imperfections has been the root cause of many integrity management initiatives to minimize and mitigate the risk of pipeline failure across the oil & gas pipeline industry. Since their first appearance in the 1…
Most recently, as a complement to the ongoing efforts to monitor and document improvements in EMAT ILI technology, PRCI conducted an extensive study of NDE inspection technologies for characterizing SCC in pipelines using various in-ditch technologies and methods. The test pipes used for the study were cut outs from a…
This work reports the synthesis of apatite-type lanthanum silicate powders with nominal composition La10Si6O27 by an innovative chemical route which combines co-precipitation and sol-gel approaches. The herein proposed synthetic procedure is advantageous in reducing energy consumption and processing time, key elements…
Abstract We report a short and convenient synthesis of two configurationally locked retinals that are important for applications in the context of optogenetics. The C11–C15 cyclopentyl fragments of both retinals were obtained by palladium‐catalysed alkoxycarbonylation and merged with the rest of the carbon skeleton th…
Silver nano-particles have different biological applications due to their compatibility. Chemical methods usually result in remaining some amounts of toxic reactions on the nano-particles. For this reason, the use of plants as sustainable and accessible resources in preparation of compatible nano-particles has attract…
Coherent electron-spin dynamics in ${\text{Ga}}_{1\ensuremath{-}x}{\text{Mn}}_{x}\text{N}$ has been investigated by time-resolved Kerr rotation spectroscopy. The effective electron $g$ factor shows a linear increase with the Mn concentration due to the s-d exchange coupling between the conduction electrons and the $d$…
This paper deals with the development of the overlay weld repair method and the weld sleeve repair method applicable to L555 (X80) pipeline. Mechanical properties of the repaired pipes were investigated and finally proper welding materials and conditions were determined which could ensure hardness limit, required stre…
Growth factor-loaded fluorescent alginate microspheres, which can realise sustained growth factor release and fluorescence imaging, were synthesised by in situ formation of ZnO quantum dots (QDs) and covalent graft of 4-(1-pyrenyl) butyric acid (PBA). BSA was chosen as a growth factor model protein to study the releas…
Heat transfer and pressure loss measurements were obtained simultaneously for a range of wood pulp fiber suspensions flowing in a pipeline. Data were obtained over a selected range of flow rates and temperatures from a specially built flow loop. It was found that the magnitude of the heat transfer coefficient was abov…