Materials Literature
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Abstract Overall water splitting using a semiconductor photocatalyst with sunlight has long been viewed as a potential means of large-scale H2 production from renewable resources. In general, the reaction can be accomplished when a photocatalyst is modified with a suitable cocatalyst that efficiently promotes water re…
Sol–gel chemistry offers a flexible approach to obtaining a diverse range of materials. It allows differing chemistries to be achieved as well as offering the ability to produce a wide range of nano-/micro-structures. The paper commences with a generalized description of the various sol–gel methods available and how t…
Urosolenia and Acanthoceras are reported as cosmopolitan centric genera, but records of these two taxa are infrequent. During an investigation of the diatom flora from Hainan Province, South of China, three Urosolenia and one Acanthoceras species were observed. Based on the morphological and ultrastructural features,…
Resumo Polímeros termoplásticos podem ser utilizados como veículo orgânico (VO) em processos de conformação de peças cerâmicas por extrusão. Neste contexto, termoplásticos à base de amido surgem como uma alternativa sustentável ao emprego das poliolefinas convencionalmente utilizadas na formulação de pastas cerâmicas.…
Conducting polymers have been attracting considerable attention of researchers worldwide since 1980, due to their unique electrical, optical, thermal and magnetic properties. Among these polymers, polyaniline (PAni) is most popular as it can be synthesized for specific applications like rechargeable batteries, bio-sen…
Novel tetrasubstituted Co(II), Cu(II) and Ni(II) phthalocyanines with 4-sulfonylphenoxyl groups were synthesized by reacting 4-(4-sulfonylphenoxy) phthalonitrile with metal chlorides. And their structures were characterized by UV-visible absorption, Fourier-transform infrared spectrum, 1H NMR, and MALDI-TOF MS. These…
This research work investigates into the performance of Aluminium Oxide nanoparticles in water based bentonite drilling fluid at high temperature formations. We looked into the thermal stability effect of the Aluminium oxide nanoparticles on the drilling fluid at varying temperature conditions. We analyzed the interac…
Wood polymer composites (WPCs) were prepared in this study by grafting polystyrene onto poplar wood cell walls through free‐radical copolymerization methods. Methacryloyl chloride was first employed to cause swelling and react with the hydroxyl groups on the wood cell walls. Styrene monomers were then copolymerized wi…
Rice straw cellulose was completely defibrillated via aqueous counter collision (ACC) at a low energy input of 15 kWh/kg, then fractionated by differential centrifugation into four increasing weight fractions of progressively thinner cellulose nanofibrils (CNFs): 6.9% in 80–200 nm, 14.4% in 20–80 nm, 20.3% in 5–20 nm,…
We generate in-plane magnetoelastic waves in nickel films using the all-optical transient grating technique. When performed on amorphous glass substrates, two dominant magnetoelastic excitations can be resonantly driven by the underlying elastic distortions, the Rayleigh Surface Acoustic Wave and the Surface Skimming…
Common density-matrix functionals, the Müller and the power functional, have been benchmarked for the half-filled Hubbard dimer, which allows to model the bond dissociation problem and the transition from the weakly to the strongly correlated limit. Unbiased numerical calculations are combined with analytical results.…
Microstructure reconstruction and compression techniques are designed to find a microstructure with desired properties. While the microstructure reconstruction searches for a microstructure with prescribed statistical properties, the microstructure compression focuses on efficient representation of material morphology…
The post on applying VSEPR ("valence shell electron pair repulsion") theory to the geometry of ClF3 has proved perennially popular. So here is a follow-up on another little molecue, F3SN. As the name implies, it is often represented with an S≡N bond. Here I take a look at the conventional analysis.
International audience
No abstract is available for this article.
The article deals with the distortion of high-frequency acoustic pulses with linear frequency modulation (LFM) in a hydroacoustic communication channel, which is caused by uneven frequency attenuation characteristics of the marine environment. The paper considers pulses with rectangular, sinusoidal and "raised cosine"…
Optimalisasi variasi komposisi kapur Lhoknga sebagai bahan baku untuk bahan gypsum gigi telah berhasil diteliti. Penggunaan batu kapur dari Lhoknga, Aceh Besar untuk penelitian ini adalah alternatif sebagai bahan baku untuk bahan gypsum gigi. Penelitian ini dilakukan untuk mengoptimalkan variasi komposisi kapur sesuai…
Abstract : The wear behavior of ultrananocrystalline diamond (UNCD) was characterized at the nanoscale to understand the fundamental mechanisms controlling the initial stages of wear. To enable this, novel nanoscale sliding experiments were conducted in situ in a transmission electron microscope (TEM). UNCD is part of…
This master thesis deals about the compression set and tension set properties of the EPDM based rubber. The effect of filler and curing agent concentration was studied. As a filler carbon black N550 was chosen in concentration 30, 60 and 90 phr. The peroxide concen-tration was 5, 7,5 and 10 phr respectively. The resul…
The present study is an attempt to examine the mosaic of the literature of graphite using scientometric as research tool. The data are collect for period of 25 years, spanning from the year 1989 through 2014. The main objective of the study is to identify the form of literature; institution affiliation; journal rankin…