Materials Literature
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La technologie des cellules photovoltaïques silicium à hétérojonction (HET) a montré un intérêt croissant ces dernières années. En alliant les avantages des technologies couches minces et silicium cristallin (c-Si), elle permet un meilleur compromis coûts-performances que les cellules purement c-Si. Cette thèse a pour…
Les alliages du système Al-Zn sont très appropries aux cinématiques de la restauration de la phase dans les solutions solides et la dissolution dans ce système a fait l'objet de nombreuses investigations, ayant contribuées à la compréhension des différents mécanismes et cinétiques de cette réaction.Le but de ce travai…
Degradation properties, such as a low voltage breakdown, fatigue, and ageing of ferroelectrics are believed to be the major problems of ferroelectric films affecting their lifetime. Although these properties have been studied for a long time, the information is still insufficient for both a quality improvement of ferr…
采用TiN浸渍热分解法制备了低铱含量Ir0.08 Ti0.92 O2纳米粉体,再通过微波辅助制备Pt/Ir0.08 Ti0.92 O2催化剂,并与采用传统亚当斯法制备的IrO2和商品化Pt/C进行对比研究.利用X射线衍射（ XRD）、透射电子显微镜（SEM）、 X射线能量散射谱（EDS）和 X射线光电子能谱（XPS）对产物进行了分析.结果表明, Ir0.08 Ti0.92 O2是一种纳米棒状金红石相固溶体,直径约15 nm,担载Pt粒度5~7 nm,其中本体Ir/Ti原子比为0.084：0.916,表面Ir/Ti原子比为0.296：0.704,表明Ir在表面发生富集.经稳态极化曲线和线性扫描伏安测试得到析氧反应的本征催化活性由高到…
Nanotechnology is a rising field of science and technology that deals with the particles having a minimum of one dimension in 1 to 100 nm. Nanotechnology gives rise to nanomaterials as its product. Nanomateials can be nanoparticles, nanorods, nanospheres ,nanocylinders,etc. Ag nanoparticles has many properties like an…
Quartz is replaced by fly ash in tri-axial porcelain body. Three different batches were prepared with first batch being composed of normal porcelain composition and the other two containing fly ash with partial substitution of quartz and total substitution of quartz. Effect of this substitution was studied by measurin…
A hybrid scaffold based on polyvinyl alcohol and bioactive glass ceramics was synthesized and characterized for its biocompatibility and its degradation behavior. Poly vinyl alcohol and glass ceramics were mixed in the ratio 70:30 by weight percentage. The glass ceramic was based on 65 % SiO2, 5 % P2O5 and 30 % CaO. A…
This work presents the buckling analysis of functionally graded single walled carbon nanotubes reinforced composite plates under in-plane mechanical loads. The effective material properties of uniformly distributed carbon nanotubes are obtained using Mori–Tanaka approach and extended rule of mixtures. The buckling loa…
L'objet de ce travail concerne une étude sur la modélisation des phénomènes électromagnétiques dans une machine à reluctance variable (MRV) qui sont à la base de son fonctionnement et de sa commande. Après un rappelle des différentes types de machines électriques avec différents cas de figures et types de MRV, nous pr…
Ferroelectrics have experienced a great deal of interest for more than half a century. Initially, ferroelectric ceramics were used as capacitor materials due to their high dielectric constants. With the preface of lead-zirconate-titanate (PZT), applications spread to transducers, actuators and many others. But because…
Spin torque oscillators (STOs) are magnetic nano-devices in which strongly non-linear magnetodynamic phenomena can be excited by current. In this thesis, we study some of these phenomena by means of micromagnetic simulations, analytical calculations, and electrical characterization. Three main subjects are discussed:\…
BNT-BT [(0.93Bi0.5Na0.5)TiO3- 0.07Ba-TiO3 ] and BNT-KNN [(0.93Bi0.5Na0.5)TiO3 – 0.07K 0.5 Na 0.5 NbO3 ] was prepared by the solid state route using microwave process. The prepared sample was calcined at 900°C for 10 minutes by microwave process for both BNT-BT and BNT-KNN. Then the sample was characterized by differen…
Correction: Energetic Frustrations in Protein Folding at Residue Resolution: A Homologous Simulation Study of Im9 Proteins
em mim nos momentos difíceis.Agradeço aos meus amigos de faculdade que continuam me apoiando, especialmente: Milene
Mit der Herabsetzung der Partikelgröße kann sich die Wahrscheinlichkeit für eine spontane Pyrophorität bei Kontakt mit Luft erhöhen. Für die Herstellung von nanometerskaligen und mikrometerskaligen Partikeln gibt es sowohl neuentwickelte als auch lange bestehende Verfahren. Aber nicht alle Verfahren sind optimal für d…
ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionORIGINAL ARTICLEThis notice is a correctionCorrection to "Cytochrome P450–Cytochrome-b5 Interaction in a Membrane Environment Changes 15N Chemical Shift Anisotropy Tensors"Manoj Kumar Pandey, Subramanian Vivekanandan, Shivani Ahuja, Rui Huang, Sang-Choul Im, Lucy Was…
Les techniques d’analyse thermique et de calorimetrie sont des methodes d’essai largement utilisees dans les laboratoires d’analyse physico-chimique, pour des finalites de recherche ou de controle qualite. Comme tout appareil de mesure, un analyseur thermique ou un calorimetre doit etre etalonne en temperature et en e…
Utilização do licor proveniente da hidrólise da polpa de sisal como substrato para a produção de biossurfatanteOs surfatantes são substâncias químicas que têm uma ampla aplicação industrial principalmente como matéria-prima na fabricação de detergentes.No entanto, estas substâncias de origem sintética podem ser substi…
For improvement of pavement of road, the use of asphalt material and its mixture are used so that their durability and performance can be enhanced. For which the suitable mixture that is been adopted is SMA Mix (Stone mastic asphalt or Stone matrix asphalt) which is better than bituminous Concrete or dense graded mix…
In the dairy industry, the milk processing leads to the formation of undesirable deposits. Due to the lack of solutions to minimize these deposits and to ensure the safety and quality of transformation, cleaning processes with both economic and environmental impacts are commonly performed. Setting optimal processing c…