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Modelo de cálculo analítico del tiempo requerido para que una corriente de arco DC que simula un rayo funda un porcentaje de la sección de un cable de guarda de líneas de transmisión

Juan Camilo Álvarez、Esteban Velilla、Germán Moreno Ospina2018-12-01Revista Politécnica

Se desarrolló un modelo de cálculo analítico del tiempo requerido para que una determinada corriente de arco DC que simula un rayo funda un porcentaje de la sección de un cable de guarda de líneas de transmisión con base en la energía transferida al cable de guarda cuando este es impactado por un rayo. En el cálculo d…

High voltage insulation and dielectric phenomena

A comparison of emulsion-based and electrosprayed particle architectures to sustain the release of small hydrophilic agents

Keegan C. Curry、Jill M. Steinbach-Rankins2018-12-01OpenAlex

Lipid and polymeric nanoparticles (NPs) have been utilized as drug delivery vehicles for a variety of applications. However, achieving the sustained-release of small hydrophilic agents is a primary challenge for their use in prolonged delivery applications. This study investigates how emulsion and electrospray process…

Nanoparticle-Based Drug DeliveryElectrospun Nanofibers in Biomedical ApplicationsElectrohydrodynamics and Fluid Dynamics

Infrared Spectroscopy and Internal Structure of Diamonds from the Ichetyu Placer, Central Timan, Russia

E. A. Vasiliev、V. A. Petrovsky、А. В. Козлов 等 4 位作者2018-12-01Geology of Ore Deposits

A wide range of model temperature, which is typical for dodecahedroids from placer deposits in the Urals, Brazil, and the northern Yakutia diamond province has been identified in diamond crystals of the Ichetyu Ural-type diamonds deposit, Central Urals. Plates were cut from six crystals; it have been studied with cath…

Geological and Geochemical AnalysisHigh-pressure geophysics and materialsDiamond and Carbon-based Materials Research

Carbon Coated SnO2 Hollow Nanocubes with Superior Sodium Storage Performance

Zhangyi Lv、Yirong Zhu、Jie Qu 等 5 位作者2018-12-01Russian Journal of Physical Chemistry A

Abstract Carbon coated SnO2 hollow nanocubes were synthesized by a facile hydrothermal route. The sample with large surface area exhibits a hollow cube particle shape with an average length of ~400–500 nm. It is found that the SnO2@C−HNC shows a high discharge capacity of 799.1 mA h g−1 with the first cycle coulombic…

Advancements in Battery MaterialsSupercapacitor Materials and FabricationAdvanced Battery Materials and Technologies

Thermal Stability of Surface Plasmon Resonance Absorption in а-С:Н〈Ag + TiО2〉 Nanocomposite Films

O. Prikhodko、Svetlana Mikhailova、Ye. S. Mukhametkarimov 等 8 位作者2018-12-01Optics and Spectroscopy

Abstract The thermal stability of surface plasmon resonance in a-C:H〈Ag〉 and a-C:H〈Ag + TiО2〉 nanocomposite films is studied. The films were deposited by ion-plasma magnetron sputtering of a combined graphite-metal target in the atmosphere of the argon and methane mixture. The structure and optical properties of nanoc…

Gold and Silver Nanoparticles Synthesis and ApplicationsPlasmonic and Surface Plasmon ResearchNonlinear Optical Materials Studies

Processes of Self-Organization and Evolution of the Microstructure of Metals and Intermetallic Compounds under a Strong External Action

B. A. Greenberg、M. A. Ivanov、V. P. Pilyugin2018-12-01The Physics of Metals and Metallography

Abstract Electron-microscopic studies of the processes of self-organization and evolution of the microstructure of metals and intermetallic compounds under different strong external actions are carried out. Special attention is given to the study of processes controlling the formation of explosively welded joints. Wel…

Engineering Technology and MethodologiesMaterial Properties and Failure MechanismsComplex Systems and Dynamics

InGaN/GaN QDs Nanorods: Processing and Properties

K. P. Kotlyar、І. П. Сошніков、I. A. Morozov 等 7 位作者2018-12-01Semiconductors

Abstract InGaN/GaN nanorod structure is presented for the fabrication of light-emitting diodes by means of plasma-chemical etching. Processes of the etching of nanorods and the defect passivation in a planar InGaN/GaN quantum dot heterostructure are studied. The obtained results allow creating the light-emitting diode…

ZnO doping and propertiesGaN-based semiconductor devices and materialsGa2O3 and related materials

Coherent Excitation of Gigahertz Range Vibrations in Single Crystal Diamond with a Built-In Graphitized Layer

M. V. Tareeva、V. A. Dravin、R. A. Khmelnitsky 等 7 位作者2018-12-01Bulletin of the Lebedev Physics Institute

The paper presents the results of experimental observations of stimulated low-frequency Raman scattering (SLFRS) on acoustic eigenvibration of graphitized layers of different thicknesses in single-crystal diamond volume excited by a nanosecond laser pulse.

Diamond and Carbon-based Materials ResearchLaser Material Processing TechniquesLaser-Ablation Synthesis of Nanoparticles

Manganese Doped Zinc Sulfide Quantum Dots as Efficient Photocatalyst for Dye Decolorization

Kseniia A. Sergeeva、Aleksandr A. Sergeev、Irina Postnova 等 4 位作者2018-12-01Semiconductors

Abstract A simple aqueous based synthesis technique at room temperature was performed for preparation of pure and manganese (Mn2+) doped ZnS quantum dots in the presence of glutathione as the capping agent. Under UV-excitation quantum dots show photoluminescence bands at 2.13 and 3.0 eV corresponded to Mn2+ and intrin…

Advanced Photocatalysis TechniquesQuantum Dots Synthesis And PropertiesNanocluster Synthesis and Applications

STUDY OF THE ANTIOXIDANT ACTIVITY OF FLAVONOIC EXTRACT OF A MEDICINAL PLANT (CALOTROPIS PROCERA) OF AHAGGAR TAMANRASSET

Mohammed Abdelkader Belalem、Brahim Labed、H. Darraji 等 7 位作者2018-12-01DOAJ (DOAJ: Directory of Open Access Journals)

Calotropis procera (family Lamiaceae) is a famous medicinal plant in the region of Hoggar Tamanrasset in southern Algeria. In this study, will have undertaken the study of the antioxidant activity of the flavonoid extract of this plant using several solvents (diethylether, ethyl acetate and N-butanol), the potential a…

Phytochemistry and Bioactive Compounds

New Advanced Hybrid Organic–Inorganic Complex

В. А. Лапина、Т. А. Павич、П. П. Першукевич2018-12-01Semiconductors

Abstract New hybrid organic–inorganic complexes of perylene with nanodiamonds were developed and fabricated. The fact of complex formation was confirmed by the analysis of the infra-red (IR) absorption spectra and their spectral-luminescent properties. It was shown as a result of nanodiamond (ND) template synthesis th…

Diamond and Carbon-based Materials ResearchLuminescence and Fluorescent MaterialsNonlinear Optical Materials Studies

Compare Estimate Methods of Parameter to Scheffé Mix Models by Using Generalized Inverse and the Stepwise Regression Procedure for Treatment Multicollinearity Problem

دجلة ابراهيم مهدي、حلا سلمان فرحان2018-12-01Journal of Economics and Administrative Sciences

Mixture experiments are response variables based on the proportions of component for this mixture. In our research we will compare the scheffʼe model with the kronecker model for the mixture experiments, especially when the experimental area is restricted. Because of the experience of the mixture of high correlation p…

Advanced Statistical Modeling TechniquesMaterial Properties and Failure Mechanisms

Polarization controlled emission on gold nanogrooves and nanowires

Desapogu Rajesh、Ziv Glasser、Yuri Gorodetski 等 5 位作者2018-12-01OpenAlex

The rapid growing interest in the field of plasmonics comes from advance nanotechnologies involving nanophotonics applications. The surface plasmon polaritons (SPP) exited by light on metallic nano grooves arrays (NGA) and nanowires (NWs), play a role of an intermediary between photonics and electronics. We report on…

Gold and Silver Nanoparticles Synthesis and ApplicationsPlasmonic and Surface Plasmon ResearchOptical Coatings and Gratings

Desarrollo de una herramienta informática para la selección de materiales termoplásticos en el entorno nacional

Alejandro Zuleta、Harveth Gil2018-12-01Revista Politécnica

Una aproximación multi-objetivos fue aplicada al diseño de un software de selección de materiales. El propósito del software es asistir a los ingenieros y diseñadores para que desempeñen una selección práctica en el momento de toma de decisiones para aplicaciones que involucren materiales termoplásticos. El proceso de…

Material Selection and PropertiesErgonomics and Human Factors

Two Methods of Calculation Ternary Nanowire Composition

N. V. Sibirev、A. A. Koryakin、Yury Berdnikov2018-12-01Semiconductors

Abstract The growth of ternary nanowires via the vapor-liquid-solid mechanism is one of the possible ways of band gap engineering. However, the dependence of ternary nanowire composition on growth parameters is still unclear. We compare two theoretical approaches to ternary nanowire composition determined either by th…

Advancements in Semiconductor Devices and Circuit DesignNanowire Synthesis and ApplicationsThermal properties of materials

Growth of Textured Au–Fe/Fe Hybrid Nanocrystals on Oxidized Silicon Surface

И. А. Тарасов、T. E. Smolyarova、I. A. Yakovlev 等 9 位作者2018-12-01Semiconductors

Abstract We present in this report the route to produce highly-textured Au3Fe(111)/Fe(110) hybrid nanocrystals on an amorphous surface of SiO2/Si by molecular beam epitaxy. By controlling the quantity of Au atoms deposited onto the SiO2/Si it is possible to tune the average lateral size of resultant Au–Fe hybrid nanoc…

Copper-based nanomaterials and applicationsnanoparticles nucleation surface interactionsAnodic Oxide Films and Nanostructures

Composite Polymeric Scaffolds with Controlled Pore Opening and Drug Delivery for Tissue Engineering Applications

Amir Najarzadeh、David A. Puleo2018-12-01OpenAlex

Composite scaffolds fabricated from biodegradable polymers as drug carriers are used extensively in the field of tissue engineering. Ideal tissue engineering scaffolds must possess a 3D interconnected porous network for tissue ingrowth and construct vascularization. However, the porous interconnected network may reduc…

Bone Tissue Engineering MaterialsElectrospun Nanofibers in Biomedical Applications3D Printing in Biomedical Research

KARAKTERISASI KOLAGEN GELEMBUNG RENANG TUNA SIRIP KUNING (Thunnus albacares) DARI PERAIRAN MALUKU MENGGUNAKAN EKSTRAKSI ASAM (Collagen Characterization from Swim Bladder of Yellowfin Tuna (Thunnus albacares) from Maluku using Acid Extraction)

Syarifuddin Idrus、Sugeng Hadinoto、Joice P. M. Kolanus2018-12-01DOAJ (DOAJ: Directory of Open Access Journals)

Swim bladders is part of byproduct from fish processing industry that contain high collagen protein. One effort to increase the added value of swim bladders is to process them into collagen extracts. The swim bladders was derived from yellowfin tuna (Thunnus albacares) as the dominant catch in Maluku. This research ai…

Protein Hydrolysis and Bioactive PeptidesCollagen: Extraction and CharacterizationFood and Agricultural Sciences

Harnessing the Physical Properties of ZnO Nanoparticles for Biological Applications and Factors that Impact ZnO Nanoparticle Toxicity

Josh Eixenberger2018-12-01OpenAlex

The production of materials at the nanoscale leads to novel properties and has made the field of nanotechnology a part of everyday life. Numerous applications of nanomaterials have led to their use in electronics, optics, and medicine. However, creating materials at such a small size brings them on the same scale as m…

Nanoparticle-Based Drug DeliveryNanoparticles: synthesis and applicationsGraphene and Nanomaterials Applications

Rapid Preparation and Luminescence Properties of YbAG:Tm3+ Nanoparticles

Hai Lin、Xinyu Wang、Shasha Li 等 7 位作者2018-12-01Russian Journal of Physical Chemistry A

Abstract (TmxYb1 –x)3Al5O12 (YbAG:Tm3+) nanoparticles (NPs) with mean diameter of 56 nm were prepared by a rapid carbonate coprecipitation method with a short calcination time of only 1 min. Our results confirmed the structure and purity of the prepared material and proved that Tm3+ was successfully incorporated into…

Luminescence Properties of Advanced MaterialsGlass properties and applicationsSolid State Laser Technologies