Materials Literature
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An Expression of Concern is issued in relation to the above article, published online on 9 February 2009 in Wiley Online Library (wileyonlinelibrary.com), by agreement between the journal Editor in Chief, John R. Griffiths, and John Wiley & Sons Ltd. The Expression of Concern has been agreed because, while the primary…
Activated carbon (AC) has been described through the years as a unique and versatile material. Its disordered micro-/nanostructure develops a diverse porous structure providing high surface area in small volumes. Aside from these textural parameters, the presence of surface functionalities is a distinctive feature of…
随着全球人口不断成长,农业生产、工业发展、能源消耗及生活消费等人类活动不断增加,对城市区域乃至于区域生态系统均带来显著负面影响。为量化评估人类活动对区域生态系统的影响,以人类活动产生的氮排放为切入点,选择中国台湾地区为研究区,针对其高投入的农业生产、密集的交通工业设施及人口分布等背景,构建了基于氮排放的区域生态风险评价研究框架。分析了2001年至2010年中国台湾地区农业及城市系统所产生的氮排放变化情况,并在空间上比较了各县市的氮排放差异;其次,依据各用地类型特点,定义了其对氮排放压力的脆弱程度,藉以评估中国台湾地区生态风险变化及其潜在风险强度。研究结果表明中国台湾地区2005至2010年期间氮排放带来的生态风险值先降后升,主要原…
Graphene is a material that is one atom thick and has a high conductivity, high mobility of charge carriers, a high thermal conductivity, and a large number of other attractive properties (Geim 2009, Novoselov et al. 2012). Moreover, from this material, many graphene-based dielectrics, such as oxidized, hydrogenated,…
Noncovalent functionalization of materials is achieved by wrapping of polymer and adsorption of surfactants or small aromatic molecules. Polymers like poly(phenylene vinylene) and polystyrene are widely used to wrap the carbon material specially CNTs [1,2]. The stirring of carbon materials in the presence of polymer c…
Serial block-face scanning electron microscopy (SBF-SEM) has become an important modality for examining small structures in biology, and new instruments are capable of gathering large volumes of data. Analysing these datasets manually is difficult because of the number of individual images involved. Objects of interes…
We synthesised the new initiator, N-methyl bis [(nonafluorobutane) sulfonyl] imide (Nf2NMe) for 2-oxazolines derived from bis [(nonafluorobutane) sulfonyl] imide (Nf2NH). Also we compared activity of initiator of Nf2NMe with methyl triflate (TfOMe) and whether it was living polymerization. Furtheremore, not only we sy…
In this work, we synthesized a new octafunctional epoxy resin: Octaglicydil tetra p-aminophenol of bisphenol A (Bis para phosphoric ester) (OGTPAPBABPPE). This resin was synthesized in three steps. The first step is intended to condense the phosphorus trichloride and the bisphenol A; the second step was to introduce a…
An equation of state (EOS) was constructed for the modified Lennard-Jones (mLJ) solid. States not close to the melting point are accurately described by the EOS. A “pretransitional” behavior was detected for the temperature derivative of the bulk modulus near the temperature at which the melting curve bends appreciabl…
A method for assessing the susceptibility of a weld to transverse cracking is proposed based on a newly designed test specimen featuring a transverse gap in the centre to control restraint and produce a large residual stress in the weld metal. Through FEM simulation of the effects of the weld bead length on the longit…
Identification and preservation of the cavernous nerves (CNs) during prostate cancer surgery is critical for post-operative sexual function. Electrical nerve stimulation (ENS) mapping has previously been tested as an intraoperative tool for CN identification, but was found to be unreliable. ENS is limited by the need…
However, the hysteresis phenomena in the graphene channel were observed not only for systems on the ferroelectric substrate, but for usual and the most widespread for today SiO2 substrates (Sabri et al. 2009, Lafkioti et al. 2010, Wang et al. 2010, Levesque et al. 2011, Veligura et al. 2011). It should also be emphasi…
Bismuth vanadate is high performance inorganic pigment. Its LD 50 cut off value is more than 5000 mg/kg body weight of rat. Thus it is acute oral nontoxic pigment. In addition to non-toxicity the property of thermal stability has helped the pigment to replace toxic cadmium and lead-based pigments in paints. It is also…
La Ferroresonancia es un dels fenomens transitoris mes destructius dels sistemes de potencia. Associa inductancies no lineals i capacitancias del sistema, iniciant-se de maneres diferents, el que fa molt dificil la seva caracteritzacio. Per evitar les consequencies de la ferrorresonancia cal entendre el fenomen, predi…
Star polymers provide model architectures to understand the dynamic and rheological effects of chain confinement for a range of complex topological structures like branched polymers, colloids, and micelles. It is important to describe the structure of such macromolecular topologies using small-angle neutron and x-ray…
We present a large area (1 cm2) nanoimprinted metamaterial comprising a fishnet structure and its Babinet complement, which shows giant cross polarization. When illuminated with s-polarized light, the reflected beam can be p-polarized up to 96%, depending on the azimuthal orientation of the sample. This experimental r…
The radiation monitoring system is an important requirement in the premises of a nuclear reactor. A variety of types of radiation (neutrons. gamma. beta and fission products) exist in a reactor. associated to the broad energy spectrum of these radiations. implying the need of detectors to be used in the reactor system…
This work presents an alternative approach for the reactivity worth experiments analysis in the IPEN/MB-01 reactor considering highly subcritical arrays. In order to reach the subcritical levels, the removal of a specific number of fuel rods is proposed. Twenty three configurations were carried out for this purpose. T…
Zirconia-based ceramics have gained considerable interest for several applications (e.g. solid electrolytes in fuel cells and in oxygen sensors, thermal barrier coatings and biomaterials for dental and orthopaedic applications) due to their high mechanical strength, improved fracture toughness and easy affordability.…
Abstract C54H74F2MnN6O24, monoclinic, P21/n (no. 14), a = 13.5493(4) Å, b = 13.8063(4) Å, c = 16.7349(4) Å, β = 106.935(2)°, V = 2994.8 Å3, Z = 2, Rgt(F) = 0.0629, wRref(F2) = 0.1500, T = 296 K.