Materials Literature
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Multilayers consisting of alternating ferroelectric poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) copolymer and relaxor poly(vinylidene fluoride-trifluoroethylene-chlorofloroethylene) (P(VDF-TrFE-CFE)) terpolymer with different periodicities in thickness were prepared by the Langmuir-Blodgett method. Excep…
배관설계에 있어 스트레스에 기반한 결정론적 방법이 전통적으로 사용되어 왔다. 한편, 신뢰도기반 설계 및 평가(RBDA) 방법론은 해양 또는 원자력 구조물에 대해 적용되어 왔다. 최근 들어 배관의 한계상태법에 기반한 신뢰도에 대해 ISO 규격 즉, ISO 16708의 출간은 RDBA 방법론이 천연가스배관 설계의 최신방향 중에 하나라는 것을 보여준다. 본 논문은 부식결함을 가진 배관의 시간 의존적 파손 확률을 예측하는 절차에 대한 사례연구를 보여준다. 여기서 전통적인 부식 배관의 신뢰도를 추정하는 데 crude Monte Carlo (CMC) 법을 사용하는 대신에 se…
Structural steels with very high strength levels are often referred to as ultrahigh-strength steels (UHSS). The usage of UHSS has been extensively studied in aerospace industries and offshore platforms. In this study, medium carbon low alloy steel (AMS6305) was thermomechanicaly treated to obtain an ultra-high strengt…
In this work, the potential of magnetron sputtered magnesium fluoride (MgF2) and MgF2 containing composite coatings for coloured solar collector glazing is investigated. Coloured thin-film interference coatings on the reverse side of the collector cover glass give solar collectors an aesthetic appearance, which facili…
Pillar[n]arene homologs with n=5–13 have already been synthesized, but the cyclic pentamers (pillar[5]arenes) and cyclic hexamers (pillar[6]arenes) have been most widely used because they can be obtained in the highest yields among all of the pillar[n]arene homologs. Pillar[5]arenes and pillar[6]arenes have 10 and 12…
Buildings form a major part of the energy demand in Switzerland. Silica aerogels as high\nperformance insulation materials have the potential to reduce the energy demand for heating\nand cooling. Silica aerogel insulation materials, can achieve the same thermal insulation\nperformance with only half of the thickness o…
This article presents an investigation into the flexural strength and behaviour of ferrocement panels containing different volume fractions of hybrid polyvinyl alcohol fibre. The research is focussed on the determination of the strength and the classification of the modified hybrid ferrocement panels. The consideratio…
Welcome to the WIT Press eLibrary - the home of the Transactions of the Wessex Institute collection, providing on-line access to papers presented at the Institute's prestigious international conferences and from its State-of-the-Art in Science & Engineering publications.
Welcome to the WIT Press eLibrary - the home of the Transactions of the Wessex Institute collection, providing on-line access to papers presented at the Institute's prestigious international conferences and from its State-of-the-Art in Science & Engineering publications.
© 2015 The Society of Rheology. The soft glassy rheology (SGR) model has successfully described the time dependent simple shear rheology of a broad class of complex fluids including foams, concentrated emulsions, colloidal glasses, and solvent-free nanoparticle-organic hybrid materials (NOHMs). The model considers a d…
Salah satu faktor utama yang perlu diperhatikan dalam keberhasilan suatu operasi pemboran adalah pembersihan lubang bor dari serbuk bor selama proses pemboran berlangsung. Perencanaan dan kontrol yang baik dapat mempercepat operasi pemboran dan secara keseluruhan dapat menghemat biaya. Sistem hidrolika lumpur pemboran…
The lead-free ceramics 0.92Na0.5Bi0.5TiO3-0.06BaTiO3-0.02K0.5Na0.5NbO3 and 0.92Na0.5Bi0.5TiO3-0.06BaTiO3-0.02K0.5Na0.5NbO3 with the addition of 0.2 wt% Co2O3 were prepared by using a solid state reaction method. The ceramics were sintered in O2 and N2 atmospheres, respectively. The rhombohedral-tetragonal morphotropic…
Abstract The complexes [Ag12(Spz)12(N‐triphos)2][Ag3(Spz)3(N‐triphos)]2·(DMF)6 (1) and [Ag18(Spz)12(N‐triphos)4(CF3CO2)6] (2) were synthesized and structurally characterized by X‐ray diffraction [HSpz = pyrazine‐2‐thiolate, N‐triphos = tris((diphenylphosphanyl)methyl)amine]. The central [Ag6] ring with chair‐conformat…
Welcome to the WIT Press eLibrary - the home of the Transactions of the Wessex Institute collection, providing on-line access to papers presented at the Institute's prestigious international conferences and from its State-of-the-Art in Science & Engineering publications.
Although windows are important for providing daylight and solar heat gain control, they are also a direct cause of about 50% energy loss through convection, conduction and radiation through what is typically a heavily insulated envelope within which they sit.Hence improving the performance of windows is critical for s…
α-YbAlB4 shows strong valence fluctuation as well as heavy fermion behavior at low temperatures. It has been theoretically suggested that the quantum criticality owing to the valence fluctuation found in Yb ions plays an important role in the peculiar properties of this material. In this work, we measured the X-ray ab…
The dynamical and thermal behaviors of Au nanoparticle (AuNP) and fourth generation poly(amidoamine) dendrimer (G4 PAMAM) of the dendrimer-encapsulated Au nanoparticle system under the dry environment were investigated by the molecular dynamics (MD) simulation. The consistent valence force field (CVFF) was used to des…
Nowadays, lost foam casting is a prospective and efficient method of obtaining a high-quality thin-section castings, having different purpose. However this method is caharcterized by various factors of production process, defining the inevitable optimization of technological casting conditions. Various factors of the…
This article considers the modern aspects of application of neutron-absorbent corrosion-resistant steels and alloys in nuclear engineering designs. There was made a review of literary sources and calculation-experimental investigations of leading Russian and foreign scientific centers, with following analysis of appli…
NaBH4, CH3CO2H, Pd/C has been described as a reagent system to hydrogenate alkenoates and alkenones. Here, we show that O-debenzylation does not occur under the conditions, making it possible to hydrogenate a double bond under Pd/C catalysis without O-debenzylation or N-debenzylation.