Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
In this paper, we focus on the prediction of the elastic and linear viscoelastic properties of porous solids based on their microstructure for the entire range of porosity. Both analytical models, namely Mean Field theory for porous solids and beam theory for cellular solids, and Finite Elements method are used and th…
Two new Ni(II) coordination polymers, {[Ni(ipa)(bib)]·3H2O}n (1) and {[Ni(bdc) (bib)]·H2O}n(2)(H2ipa = 5-hydroxyisophthalic acid, H2bdc = 2,4’-biphenyl-dicarboxylate acid and bib = 1,4-bis(imidazol-1-yl)benzene), have been synthesized and characterized by IR, elemental analysis, and single-crystal X-ray diffraction. C…
espanolEl scrapie clasico producido por priones, es una enfermedad neurodegenerativa fatal que afecta a ovinos y caprinos, caracterizada por presentar un largo periodo de incubacion, posterior a lo cual es posible el diagnostico con la aparicion gradual de los signos clinicos y las alteraciones neurologicas. La princi…
Reologia de una emulsion de aceite en agua - Los tiempos caracteristicos bajo flujo cortante y el efecto del area y la tension interfacial
Este trabajo se enmarca en el contexto de la linea de investigacion Fabricacion y Procesado de Materiales Ceramicos Avanzados desarrollada en el Grupo Especializado de Ceramicos de la Universidad de Extremadura.
Pembentukan membran perovskit La0,7Sr0,3CoyFe1-y (0,6≤y≤1,0) dengan diameter 55 mm berhasil dilakukan pada tekanan 7 ton, dengan bantuan aditif amilum sebagai binder. Kelima jenis membran yang dihasilkan menunjukkan kerapatan yang lebih baik pada sintering suhu 1250 oC daripada sintering suhu 1100 oC, karena pemanasan…
In the Structure of Appearance and in Problems and Projects, Nelson Goodman has constructed a theory of complexity whose elements are the predicates of a system. One of his main results is a closed formula to evaluate v[n-pl], the maximum complexity value of an n-place predicate. Up to this day no procedure has been f…
In the previous publications (E. Kogan and V. U. Nazarov, Phys. Rev. B {\bf 85}, 115418 (2012) and E. Kogan, Graphene {\bf 2}, 74 (2013)) we presented point group symmetry classification of energy bands in graphene. In the present note we generalize classification by considering the space group symmetry. Also in the f…
The controlled polymerisation of the renewable monomer lactide to give the degradable polyester polylactide (PLA) is an attractive area of research as efforts are made to move away from traditional petroleum-based plastics. A C3-symmetric Group 4 amine tris(phenolate) complex has previously been published exhibiting h…
La presente Tesis Doctoral tiene como objetivo principal el estudio de los fenomenos que resultan de la interaccion entre superficies de sulfato de calcio anhidro (CaSO4) y soluciones acuosas de distinta composicion. Este objetivo principal se subdivide en dos objetivos parciales que definen dos vertientes con implica…
El conformado neto de materiales ceramicos es una etapa fundamental del procesamiento, ya que en ella se convierte una masa de polvos en una pieza con la geometria y tamano deseados. Durante la consolidacion de la pieza se pueden introducir muchos defectos, por lo que el control de cada etapa para evitar o reducir la…
Polypeptides are one of the key versatile and unique bio-molecular building blocks of life. They are very well known to be the basic components involved in myriad cell metabolic activities. Most of these functions rely on the fundamental fold that the polypeptide adopts in the three dimensional space. The polypeptide…
The kinetic theory of switching processes in crystalline ferroelectric materials under the influence of a variable external electric field is formulated. The basic equations are derived and their exact analytical solution at arbitrary time-dependent external field are obtained. Connection between the hysteresis loops…
Esta tesis contribuye a la mejora economica y medioambiental del proceso Hatschek de fabricacion de fibrocemento sin amianto a traves de la modificacion de las formulaciones de fibrocemento de dos maneras diferentes: 1o.- Mediante la adicion de sepiolita, con el fin de mejorar las propiedades de la matriz, asi como la…
Shape effects in magnetic particles are widely studied, because of the ability of the shape and the size to control the parameters of a sample during its production. Experiments with nano-sized samples show that the shape can affect also the properties of antiferromagnetic (AFM) materials. However, the theoretical int…
ÖZETAraştırma neticesinde Alginatların çeşitli prepare edilmiş yüzeylerde tutuculuk kuvveti incelendiğinde, maddelerin perfore edilmiş satıhlardan, perforasyon çevresel toplamının büyük değerlerinde, dolayısıyle delikli ölçü kaşıklarında daha kuvvetli tutunacağı ve kaşıktan ayrılmasına karşı koyan kuvvetlerin kaşık ke…
This letter discusses the importance of the nature of local fields inside a unit cell of optical metamaterials in developing a valid effective medium theory. In particular, we apply the Meier-Wokaun procedure to derive a corrected version of the Maxwell-Garnett formula for the refractive index of a medium composed by…
通过金相分析、扫描电镜、能谱分析,同时结合热力学及动力学计算的方法,对Ni-22Cr-12Co镍基高温合金电渣重熔TiN变化行为进行研究,结果表明：在试验条件下,真空锭和电渣锭中的夹杂物均为以Al2O3为核心的TiN夹杂物;电渣重熔过程中,计算所得TiN回溶时间为1.17s;电渣重熔对去除TiN夹杂物几乎不起作用;计算所得TiN析出尺寸约为5μm,略小于试验值。
This SAE Recommended Practice describes a laboratory test procedure for measuring the vibration damping performance of a system consisting of a damping material bonded to a vibrating cantilevered steel bar. The bar is often called the Oberst bar (named after Dr. H. Oberst) and the test method is often called the Obers…
Actuellement, les moules utilisés pour la réalisation de pièces composites aéronautiques sont à base d'alliages métalliques (FeNi, Invar) très appréciés pour leur faible coefficient de dilatation. Toutefois, ces alliages présentent plusieurs inconvénients (poids, prix, délais de livraison) qui incitent les industriels…