Materials Literature
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Silica nano particles are produced from coconut shells .Coconut shells are cleaned, dried and made into pieces. Then it is burned in a muffle furnace at 700°C for 5 hrs to get Coconut Shell Ash (CSA) containing silica nanoparticles. The CSA is made into fine powder and stirred with 2.5N sodium hydroxide solution for 4…
Cathodoluminescence (CL) spectra have been collected from single nanometer-sized crystals of Y1.98Tb0.02O2S and Gd1.98Tb0.02O2S using a Gatan Vulcan cathodoluminescence imaging spectrometer. Slight variations observed in the CL spectra taken from the crystals are explained, and discussed in relation to bulk samples.
In this work, we reported synthesized silver nanoparticles using the aqueous extract of Setaria verticillata and assessing its antimicrobial activity. The synthesized silver nanoparticles were characterized by UV-Visible spectrophotometry, FT-IR spectroscopy, Scanning electron microscopy and Energy dispersive X-ray an…
Transient overvoltage Due to Switching Operation of large induction motors by vacuum circuit breaker can result in severe stator failures. The protection of the motor with MOA surge arresters only, is not guaranteed. A full motor protection will be provided by using C-R surge suppressors to eliminate multiple re-ignit…
Microporous materials, which refers to the porous materials with pores of less than 2 nm, have been widely used for heterogeneous catalysis, adsorption, separation, gas storage and other numbers of advanced applications. Their high-profile application is mainly focused in the field of energy and environment research,…
Quaternary slope deposits near the Lesse river in the Famenne region, south Belgium, contain scattered rounded rock fragments (5-15 cm diameter) that are typically characterized by a dark coating or patina. This dark surface resembles rock varnish occurrences. To establish the nature of the coatings, chemical, mineral…
Americanae nace como un proyecto conjunto que surge dentro de la Red Europea de Información y Documentación sobre América Latina (REDIAL), y que ha afrontado la Biblioteca de la Agencia Española de Cooperación Internacional para el Desarrollo (AECID). Esta nueva biblioteca virtual hace más accesibles los libros digita…
微生物が関与する金属の腐食現象を微生物腐食と呼ぶ．これまでに，石油タンク底水を用いて実験室レベルでの腐食再現試験に成功し，DGGE解析によって微生物群集構造の変化が起こっていることを明らかにしてきたが，群集構造の詳細と腐食現象の関連付けが出来ていなかった．そこで，本研究では，次世代シーケンサを用いてタンク底水および培養・腐食試験液中の微生物群集構造の詳細を明らかにし，腐食現象と微生物群集構造の関連付けを試みた．タンク底水を用いた群集構造解析では，タンクごとにその群集構造が大きく異なることを定量的に明らかにした．また，その群集構造が，置かれる環境条件によって変化することを明らかにした．加速された鉄の溶出を示した試料KTD1-M-Fe…
Condensation reactions of glycerol with aldehydes and ketones were performed under thermal heating and microwave irradiation regimes. Homogeneous and heterogeneous catalysts were tested in both conditions. A silica sulfated (SiO2-SO3H) heterogeneous catalyst demonstrated the best performance relative to a selectivity…
The mechanisms and characteristics of low temperature creep and irradiation creep of structural alloys in light water reactor service are briefly reviewed. The significance of creep is made clear in relation to the environmentally-assisted cracking (EAC). It is shown that while total creep itself may not be significan…
Poly[bis(phenoxyphosphazene)] (PBPP) and magnesium hydroxide (MH) are used as a flame retardant blend with low-density polyethylene (LDPE) for the nuclear cable. This study aims to investigate the effects of PBPP in MH-LDPE blend composites on flame retardance and electron beam irradiation. The structure, morphology,…
A number of models have been developed to describe electron transfer between electrolytes and group II-VI binary semiconductors. In this report, a study was conducted to describe and model electron transfer between an inorganic semiconductor, (i.e. CdS) and a ferric oxidizing/reducing agent [i.e. K3Fe(CN)6/K4Fe(CN)6].…
Development of simple UV detection system using CdTe quantum dots (QDs) as primary detector with scintillating property on exposure to UV rays is reported. CdTe, CdTe/ZnS and CdTe/CdS QDs were synthesized in aqueous phase using mercaptosuccinic acid (MSA) as a capping agent and studied for its properties like crystall…
Abstract The kinetics of collision and bouncing of an air bubble on hydrophilic and hydrophobic solid surfaces immersed in distilled water is reported. We carried out the experiments and compared the bubble collision and bouncing courses on the stagnant and vibrating, with a controlled frequency and amplitude, solid/l…
The relationship we have with materials is built up over time and includes a complex array of variables that contribute to a material having preconceived functional and aesthetic qualities that are specific to certain products and within certain materials (Demirbilek & Sener, 2003, Dunne, 2005; Chapman, 2015). The rel…
The absorption of SO2 in flue gas with sodium hydroxide solution in a novel rotating packed bed was studied. The effects of high gravity factor, ratio of liquid to gas and gas flow rate on removal rate of SO2(h) and mass transfer coefficient(KGa) were examined experimentally. Besides, the effect of number of cycles on…
With more HVDC transmission projects being built in China, the electromagnetic environment problems caused by corona discharge are particularly important. However, when the transmission lines pass over the agricultural greenhouses the ionized electric field is not given sufficient consideration. When the greenhouses m…
This research modified kao linite with dodecyl dimethyl betaine(BS- 12), and then investigated the adsorption characteristics of BS- 12 on kaolinite at different conditions of ionic strength, temperature and p H by batch processing. Results showed that Henry equation was suitable to describe the adsorption of BS- 12 o…
The aim of this research is to investigate the dynamic mechanical properties of woven carbon fibre reinforced poly ether ether ketone (PEEK) using both experimental and numerical methods.Studies are carried out over a range of temperatures and dynamic strain rates.A numerical model is developed to predict the response…
Polyethylene glycol(PEG)s with different molecular weights were introduced into furan resin by chemical modification to overcome its large brittleness and the introduction of the flexible long chains of PEGs increased the toughness of furan resin.The results showed that PEG-400 had a better toughening effect when its…