Materials Literature
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Ce travail de thèse porte sur la synthèse de copolymères greffés à squelette 1,4-polybutadiène (PBu) et polyoxanorbornène par combinaison de ROMP et chimie click et/ou polymérisation RAFT selon la méthode grafting through. Une gamme de macromonomères symétriques et non symétriques originaux poly(oxyde d’éthylène) (POE…
Kvaliteta uveza knjige ovisna je o čvrstoći knjižnog bloka. U ovom radu predstavit će se najčešće korištene tehnike ručnog uveza knjige. Karakteristike knjižnog bloka su jednake za tvrdi i meki uvez. Cilj planiranog istraživanja je utvrditi da li na kvalitetu uveza utječe način povezivanja knjižnog bloka s koricom. Si…
In this work we show, by means of a density functional theory formalism, that the simple physical contact between hydrogen terminated boron nitride surfaces gives rise to a metallic interface with free carries of opposite sign at each surface. A band gap can be induced by applying uniaxial pressure. The size of the ba…
در این تحقیق، ابتدا لایههای نازک غشایی از جنس کوپلیمر پلیآمید-پلیاتر روی پایههای سرامیکی نانوکامپوزیتی کشیده شد. سپس عملکرد این غشاها برای جداسازی CO2از CH4و N2مورد ارزیابی قرار گرفت. برای جداسازی CO2از CH4میزان انتخابگری غشا در فشارهای کمتر از bar5/3 بسیار بالا و در فشارهای بالاتر بین 25-20 به دست آمد. همچنین انت…
The ions released by weathering either remain in place or are exported in quantities that largely depend on their solubility in water. The curves reproduced here were established at 20° C, for normal pressures and in the absence of other ions. They only have indicative value but are very important for understanding wh…
We shall begin the review of the great soil groups with Ferralsols because they are the oldest and most mature soils of the world. They correspond to the intertropical zone. They owe their exceptional depth to three factors: (i) high rainfall and temperature that accelerate rock weathering; (ii) feeble surface erosion…
This chapter reviews a recent HONN-like model called Symbolic Function Network (SFN). This model is designed with the goal to impart more flexibility than both traditional and HONNs neural networks. The main idea behind this scheme is the fact that different functional forms suit different applications and that no spe…
The main objective here is to understand why soils are stratified into horizons and why they retain this structure during their development. For this we shall develop what we call the weathering-front model. It forms the central and unifying principle of this entire work. Then we will study the fine mechanisms that ca…
Ilyushin et al.16 investigated the tensile strength of a crystalline whisker of a synthetic calcium silicate hydrate. The result showed that the tensile strength of this whisker synthesized as a low Ca/ Si ratio calcium silicate hydrate (C/ S <1.5) and reached 1300 MPa, but one with a higher ratio had only half the st…
The article deals with contemporary issues of safety of aircraft structures, which are fundamental in the choice of approaches to the continuing airworthiness of aircraft which re fundamental in the choice of approaches to continuing airworthiness of aircraft. The features of the formation methods of technical mainten…
Abstract Not Provided
Presents the influence of flame retardant on the flammability of polymeric materials. The influence of phosphorus compounds on flammability and physical and mechanical properties of epoxy polymers. Experimentally shows the possible methods of reducing their combustibility without changing the physical and mechanical c…
Aim: The objective of the present investigation was to study the effect of PVP on in vitro dissolution of aceclofenac from coprecipitates. Materials and Methods: Aceclofenac coprecipitates (CP) with different drug loadings were prepared and in vitro dissolution studies of pure drug, physical mixtures and coprecipitate…
A man's work motivation derives internally from desire, cognitive value, and emotions, and is put through dynamic interaction with the external environment. To fully understand a man's work motivation, we must take into account not only short-term task-based work motivation, but also long-term work motivation which de…
This final report summarizes experimental and analytical work performed under an agreement between the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Office of Transportation Technologies, and UT-Battelle LLC. The project was directed by Jerry Gibbs, of the U.S. Department of Energy’s Pro…
This report presents results from tests with new glass formulations that have been developed for several high Bi-P HLW compositions that are expected to be processed at the WTP that have not been tested previously. WTP HLW feed compositions were reviewed to select waste batches that are high in Bi-P and that are reaso…
In this study, a 3D combustion chamber was simulated using FLUENT 6.32. Aim to obtain detailed information on combustion characteristics and _ nitrogen oxides in the furnace and the effect of oxygen enrichment in a combustion process. Oxygenenriched combustion is an effective way to reduce emissions. This paper analyz…
A gene coding for mannanase (manA) from Bacillus subtilis was introduced into a shuttle vector pGK12 between Escherichia coli, B. subtilis and Lactobacillus paracasei. As a result of transferring the resultant plasmid, designated pGK12M3, into three different strains, the manA gene was found to be expressed in L. para…
Chemistry One possible use of synthetic polymeric nanoparticles is to target and bind protein in vivo. As such, these nanoparticles have potential for medical applications, but often their performance is lower in vivo than in vitro because of slow binding kinetics and nonspecific protein binding. Hoshino et al. borrow…
采用1,4-环己烷二甲醇(CHDM)与1,4-环己烷二甲酸(CHDA)合成出了高透明全脂环族聚酯聚(1,4-环己烷二甲酸-1,4-环己烷二甲醇酯)(PCCD).研究了CHDM和CHDA的顺反异构体含量对PCCD结晶性能和光学性能的影响,结果表明当CHDA顺式异构体含量达到40%以上时,可以获得高透明无定型PCCD. 3种钛系化合物包括钛酸四丁酯(TBT)、钛酸四异丙酯(TPT)和二氧化钛与二氧化硅复合物C-94用作反应的催化剂,结果以TBT的催化活性最好.TBT用量的增加可以使PCCD分子量小幅度增长.通过对生成物PCCD的分子量和特性黏数测试,分析了CHDM/CHDA初始摩尔比对PCCD的影响规律,随着CHDM/CHDA初始摩尔…