Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
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…
Engineered Nanomaterials (ENs) such as silica, ceria and alumina nanoparticles have been extensively used in health care, energy and electronics. However, their toxicity and cellular uptake, which are strongly dependent on their physiochemical properties and on cell interaction, are largely unknown. The objective of t…
Summary This paper investigates two possible processes in the detritusphere: the effect of various fresh plant materials on extractable phosphorus in soil and the effect of decomposing litter on mineralization of soil microbial residues. The objective was to quantify these two poorly‐studied processes. The work was do…
Concerns on corrosion and effective coating protection of double hull tankers and bulk carriers in service have been raised especially in water ballast tanks (WBTs). Test protocols/methodologies specifically that which is incorporated in the International Maritime Organisation (IMO), Performance Standard for Protectiv…
Targeted drug delivery, as a vehicle to transport an effi cient agent to a specifi c site of action, has been developed to improve treatment for various diseases, such as cancer or infl ammation, since conventional drug administration causes systemic side effects. One possible way to reduce those side effects is to in…
Nanoreactors based on an encapsulation of active compounds in nanometer-size carriers, where they can act in situ, have recently been developed as a new alternative to conventional systems in various domains, such as catalysis or therapeutics. Here, we present carriers used to build nanoreactors, either as compartment…
Pnictide superconductors will be very promising for applications if wires with high critical current density Jccan allow reel-to-reel large-scale fabrication at low costs. To understand the mechanism(s) that limited Jcin flat-rolled Sr0.6K0.4Fe2As2(Sr122) tapes, microstructure analysis has been considered the most dir…
Double channel torch, which allows concentric flow of two different shielding gases, was designed and manufactured in order to pursue double channel torch gas metal arc welding of unalloyed structural steel S235JR (EN 10025-2) with fourteen passes. Tensile and Charpy V-notch tests were realized and the results were co…
Electron wave functions in twisted bilayer graphene may have a strong single-layer character or be intrinsically delocalized between layers, with their nature often determined by how energetically close they are to the Dirac point. In this paper, we demonstrate that in magnetic fields, optical absorption (cyclotron re…
We prepare and investigate two-dimensional (2D) single-layer arrays and multilayered networks of gold nanoparticles derivatized with conjugated hetero-aromatic molecules, i.e., S-(4-{[2,6-bipyrazol-1-yl)pyrid-4-yl]ethynyl}phenyl)thiolate (herein S-BPP), as capping ligands. These structures are fabricated by a combinat…
The ultrasonic velocity of the alkali-borosilicate with different transition metal oxides (TMO) has been studied using the pulse echo technique. The elastic moduli such as elastic constant and bulk modulus have been obtained from the experimental data. Changes in the structure with different gamma irradiation doses ha…
A complete study of BaTi0.98Sn0.02O3 (BTS) thin films deposited on sapphire substrates by a sol-gel technique with physical and microwave dielectric properties up to 67 GHz is presented. A method derived from the techniques applied to silicon transistors and called de-embedding OPEN-SHORT is used for the extraction of…
External vibration testing was performed on a semihermetic, direct drive compressor on magnetic bearings intended for U.S. Navy Shipboard use. The compressor was placed on a U.S. Navy MIL-STD-167 shaker platform and driven at sinusoidal frequencies from 4 to 33 Hz at graduated displacements equal to a maximum of 1.5 G…
While pressure fluctuation is an inherent part of operating pipelines, review of historic operations of several pipelines in the years leading up to a failure shows a trend in the severity level of the pressure cycling. It was recognized that moderate to severe levels of pressure cycling are not acceptable on a pipeli…
Hard spots are serious threats to pipeline operations, especially in pre-1970s vintage pipe where they were unintentionally created in the manufacturing process. Steels with high hardness and tensile strength are susceptible to hydrogen induced cracking (HIC) and thus hard spots with hardnesses higher than that of the…
Due to the vast mileage of pipelines throughout the world, it is important that dependable leak detection systems (LDSs) are used to promptly identify when a leak has occurred so that appropriate response actions are initiated quickly. The swiftness of these actions can help reduce the consequences of accidents or inc…
Fracture mechanics methods for engineering assessment of acceptable flaw sizes in pipeline girth welds have been widely and successfully embraced by the pipeline industry. Advancements driven by strain-based design have identified elevated conservatism in assessment of material toughness by standardized high constrain…