Materials Literature
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A microfocal-mode model of the initiation of the chain reaction of explosive decomposition during the laser initiation of energetic materials is proposed. Reaction microfoci arise from excitation density fluctuations as a result of the stochastic nature of the interaction of photons with the energetic material during…
In an In vivo study the full synthetic bone substitute NanoBone® S (NBS) was analyzed using a standardized bone defect (6 x 12 x 24mm) model in the ovine tibial metaphysis. The defect on the left side was filled with NBS granules and on the right side, autologous bone, harvested from the hip of the same animal, was in…
Stress invariants approach to the multiaxial fatigue life estimation is generally based on the root mean square value of second invariant of the deviatoric stress amplitude and the value of hydrostatic stress. Such an approach omits a significant part of the information about multiaxial load history. It is particularl…
The application of a recently proposed Multi-Stage Quasi-Conformal Transformation Optics (QCTO) approach is considered for the design of metamaterial lenses capable of enhancing radiation properties of conformal arrays. The capability to achieve significantly simplified structures by means of square tile discretizatio…
The use of natural raw materials as antimicrobial agents has aroused the interest of researchers in view of its low toxicity, low amount of harmful effects on the environment and better public acceptance. The film of chitosan in combination with essential oils is presented as a promising alternative in view of its pro…
Front Cover: A model that can predict the evolving molecular weight distributions of star polymers undergoing mechanochemical degradation is developed. In the foreground of the cover image, a 3D plot shows the distributions obtained with this model for a theoretical four-arm star polymer. In the background, the equati…
Randomly distributed silica nanowires show highly reflectivity in the whole visible wavelength, which can be used as white light coating for high-efficiency optoelectronic packaging as affirmed by our previous work. In this work, an improved process has been developed to recombine the silica nanowires as optical coati…
Different thickness multi-layer graphene were prepared by the method of liquid ultrasonic stripping and characterized by XRD, SEM and TEM. Friction and wear properties of graphene liquid dispersing system were investigated using an Multi-functional reciprocating friction and wear tester in ambient condition. Results i…
In this research, the Effect of extrusion pass on microstructure and transformation temperature of NiTiNb alloy was researched. The results shows that ECAP can efficiently break the hard and brittle (Ti, Nb)2Ni phase. At the same time, β-Nb phase particles were precipitated and grow up after ECAP process.Due to enhanc…
The mechanical properties of materials and structural components, notably fatigue life, brittle fracture, dimensional stability, deformation and crack propagation can be considerably influenced by residual stresses inside bodies. Accordingly, residual stresses analysis is a compulsory stage in the design of parts and…
Regions of proliferating tumor are characterized by extracellular acidosis and hypoxia. Additionally, tumor cells utilize glutamine and other amino acids for fuel, resulting in elevated extracellular concentrations of glutamine in areas of metabolically active tumor. In the current study we explore the use of chemical…
A control method named Active Harmonic Resistance (AHR) using repetitive control technique is proposed to suppress the resonance between the power capacitor and system inductance in power distribution network. Firstly, this paper explains the theory of AHR and its low voltage tracking precision. Secondly, the paramete…
In this paper is given an overview of the patenting activities that Michael Idvorsky Pupin undertook in order to protect his inventions both in the other countries than the United States of America. The results of an investigation that the authors, patent engineers, Mrs. Snežana řarboh, PhD, and Mr. Slobodan Stojković…
A laser adhesiometer is developed to determine the adhesive and cohesive forces in multilayer materials. The obtained experimental dependences are explained using the laser microexplosion model. The advantages of determining the adhesive and cohesive forces using the laser adhesiometer over other methods are grounded.
For fine pattern formation, the pattern shrinkage process is indispensable in the lithography process in terms of cost and simplicity. In this paper, a full-shrinkage process of contact holes (C/H) with the directed self-assembly (DSA) of a block copolymer (BCP) is modeled and simulated by using the dissipative partic…
In this paper, the common problems of the preparation of hydroxyapatite (HA) bioactive coating on the surface of titanium and titanium alloy were described, which included bonding strength and biological activity. The improvement of the bonding strength between coating and matrix could be reached by using proper prepa…
Low-temperature study of matter provides a key to understanding its fundamental properties. Under conditions where thermal fluctuations do not mask fine interactions, quantum cooperative phenomena that have no analogy in classical physics come into play. Among them are superconductivity, low-temperature exotic magneti…
BACKGROUND: There is scant data on actionable parameters that may improve local control (LC) after SRS for brain metastases. We evaluated the impact of various patient, tumor, and dosimetric variables on LC of NSCLC brain metastases with SRS. METHODS: Patients with NSCLC brain metastases treated with single fraction S…
A planar hybrid microcavity containing isolated diamond particles with embedded silicon-vacancy (Si-V) color centers in its active layer is fabricated by plasma-enhanced chemical vapor deposition. Distributed Bragg reflectors are produced on the basis of alternating quarter-wave a-Si1 − x C x :H and a-SiO2 layers. The…
In order to optimize the well control equipments of nitrogen drilling, the wellhead equipments have been inspected and analyzed systematically, and the failure analysis has been performed for the fracture at the through hole of two valve plates of flat valve at the side outlet of the multi-function four-way valve in t…