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。
The V-I curve, axial, and radial discharge images for cylindrical hollow cathode discharge are investigated. Results show that three modes appear with averaged discharge current increasing: 1) Townsend mode; 2) self-pulsing mode; and 3) hollow cathode effect mode.
Recently, the multi-phase TiAl alloys have been implemented in low-pressure turbine blades of civil aero-engines. Current researches are focused on the improvements of alloy properties to expand the potentiality of this alloy for high temperature applications. As the deformation and fracture behaviour of this alloy ar…
The structure and trajectories of the mutant peptide of ubiquitin (PDB ID: 1E0Q) has been studied using Molecular Dynamics (MD) simulation. The simulation was performed using AMBER 11 utilizing force field 99 for 50 ns at constant temperature 325 K. The purpose of this study is to investigate the protein folding pathw…
The development of fully-implantable therapeutic and diagnostic devices represents a new paradigm in biomedical device design. However, designing materials that can perform as injectable matrices for the delivery of sensing and therapeutics chemistries while retaining control over sensor and drug release behaviors is…
Η απόρριψη των βαρέων μετάλλων στο περιβάλλον, αποτελεί σοβαρή απειλή, τόσο για το θαλάσσιο, όσο και για το χερσαίο οικοσύστημα. Για την αντιμετώπιση της ρύπανσης από τα βαρέα μέταλλα, έχουν αναπτυχθεί διάφορες μέθοδοι εξυγίανσης. Στην παρούσα εργασία, πραγματοποιείται μελέτη μιας από αυτές τις μεθόδους και συγκεκριμέ…
Phase field equations describe the novel approach to the Stefan problems. We calculate these equations numerically performed in two-dimensions. We take full advantage of the phase field parameter $φ$ to track the interface on which complicated movements or changes are needed. More precisely, we analyze the dissolution…
Γραφένιο: ένα υλικό, δύο διαστάσεις, απεριόριστες δυνατότητες! Το δισδιάστατο αυτό πλέγμα ατόμων άνθρακα και οι μοναδικές του ιδιότητες έχουν μαγνητίσει το ενδιαφέρον της επιστημονικής κοινότητας από την πρώτη κιόλας στιγμή της απομόνωσής του το 2004 μέχρι και σήμερα. Η εξαιρετικά υψηλή ηλεκτρική και θερμική του αγωγι…
Abstract : Pursuant to the Council on Environmental Quality regulation for implementing the procedural provisions of the National Environmental Policy Act (NEPA), Title 40 of the Code of Federal Regulations (CFR) 1500 - I 508; Air force Environmental Impact Analysis Process regulations 32 CfR 989 and Department of Def…
Development in the current structure is progressing very rapidly which took place in various fields. Concrete is one option as a structural material in building construction. But with increasing climate change needs an innovation in the world of construction to be able to create a concrete constituent materials friend…
Abstract The pH‐solubility profiles of a model drug in salt form were established and the mechanism of salt‐to‐free base form transformation was investigated by increasing pH of the system. Wet massing experiments together with suspension experiments were performed to investigate the effects of excipients on the stabi…
The effects of reinforcing Poly ether etherketone (PEEK) with alumina nanofiber have been studied. The nano-composites were prepared by first dispersing the fibre in solvent and then undertaking the synthesis of PEEK. Nanocomposite materials with 1wt.%, 2.5wt.% and 5wt.% of alumina nanofiber have been prepared success…
Nd ‐doped GaN powders are synthesized by a direct nitridation of Ga 2 O 3 , and the structural, optical, and magnetic properties of the products with different Nd concentrations are investigated. It is found that the Nd ‐doped GaN powders have wurtzite structure and exhibit a broad blue emission related with defects.…
Abstract A series of macrocycles containing isoxazoline and dioxazole are synthesized for the first time.
Micro structured silica containing cobalt oxide materials was prepared by the calcination of silica containing cobalt salicylaldimine complexes. The SEM image showed that the prepared materials from higher content of cobalt salicylaldimine complexes had sponge-like structured. The IR and DR UV-Vis, spectra confirmed t…
As novas descobertas petrolíferas em águas profundas sugerem novos desafios à área técnica, relacionados às propriedades mecânica e metalúrgica dos materiais utilizados na indústria de petróleo e gás. Neste trabalho, propôs-se caracterizar as variações microestruturais das regiões na junta soldada, decorrentes do aman…
A new organic–inorganic hybrid (H2en)2[[Cu(en)2]AsIIIAsVMoVI9O34]·6H2O (1), containing a 1-D helical chain based on the trivacant monocapped Keggin arsenomolybdate and the copper complex linker {[Cu(en)2][AsIIIAsVMoVI9O34]}n4n− (en = ethylenediamine), has been synthesized and characterized by IR spectra, TG analyses,…
The method of leaks localization from underground water supply system on the basis of acoustic portraits pipelines comparison was proposed in the paper. The parameters of wavelet neuron network was suggested to use as the acoustic portraits, which was taught to approximate the acoustic signal, received on the soil sur…
The paper gives the method of selecting stable operation modes of the vortex spray countercurrent mass exchange device (VSCMED), which includes calculating the flow of drops taking into account flow uniformity and mutual influence. In order to make the calculation, a number of assumptions, which allow to calculate the…
Based on the solutions of inverse problems of differential geometry using S-functions, modeling methodology of shaping surfaces, described by weight functions that accurately describe the equations of complex boundaries was developed.An algorithm of surface description in the complex area in the form of an inverted fl…
Abstract Novel, strongly fluorescent donor‐acceptor substituted anthracene bisimides (III) and (V) are prepared via Sonogashira and Stille couplings.