scholarly journals Cam-Clay plasticity, Part VIII: A constitutive framework for porous materials with evolving internal structure

2016 ◽  
Vol 309 ◽  
pp. 653-679 ◽  
Author(s):  
Ronaldo I. Borja ◽  
Jinhyun Choo
Keyword(s):  
Porous Materials ◽  
Internal Structure ◽  
Cam Clay

scholarly journals Shaping metal–organic framework materials with a honeycomb internal structure

2018 ◽  
Vol 54 (30) ◽  
pp. 3775-3778 ◽  
Author(s):  
Yingya Zhang ◽  
Juanjuan Cai ◽  
Dayou Zhang ◽  
Xuebin Ke ◽  
Lixiong Zhang
Keyword(s):  
Porous Materials ◽  
Internal Structure ◽  
Self Assembly ◽  
Metal Organic Framework ◽  
Assembly Process ◽  
Framework Materials ◽  
Chitosan Matrix ◽  
Hierarchical Porous ◽  
Metal Organic ◽  
Organic Framework

Fabricating hierarchical porous materials: a self-assembly process to incorporate ZIF-8 particles into a chitosan matrix exhibits a honeycomb internal structure.

Strengthening of polymer ordered porous materials based on a layered nanocomposite internal structure

Nanoscale ◽  
2016 ◽  
Vol 8 (27) ◽  
pp. 13507-13512 ◽  
Author(s):  
Liping Heng ◽  
Xieyou Guo ◽  
Tianqi Guo ◽  
Bin Wang ◽  
Lei Jiang
Keyword(s):  
Porous Materials ◽  
Internal Structure ◽  
Ordered Porous

Hierarchical porous materials: Internal structure revealed by argon ion-beam cross-section polishing, HRSEM and AFM

2011 ◽  
Vol 13 (4) ◽  
pp. 745-749 ◽  
Author(s):  
Sam M. Stevens ◽  
Adonay R. Loiola ◽  
Pablo Cubillas ◽  
Lindomar R.D. da Silva ◽  
Osamu Terasaki ◽  
...  
Keyword(s):  
Porous Materials ◽  
Internal Structure ◽  
Cross Section ◽  
Ion Beam ◽  
Beam Cross Section ◽  
Hierarchical Porous ◽  
Argon Ion

Macroscopic Properties of Inhomogeneous Material with Randomly Distributed Pores

2007 ◽  
Vol 340-341 ◽  
pp. 1031-1036
Author(s):  
Shōji Imatani ◽  
Daisuke Fujiwara
Keyword(s):  
Porous Materials ◽  
Internal Structure ◽  
High Porosity ◽  
Engineering Ceramics ◽  
Wide Range ◽  
Macroscopic Properties ◽  
Morphology Effect ◽  
Microscopic Morphology ◽  
The Relationship ◽  
Low Porosity

Porous materials such as engineering ceramics and metal foams have a specific feature such that internal structure has a significant influence on the mechanical properties from the viewpoint of porosity and morphology. This paper discusses the relationship between microscopic morphology and macroscopic properties of the porous materials based on the homogenization technique, in which pores are randomly distributed over the domain. Various types of pores are examined and the conjunction between different elemental types is discussed. A wide range of porosity is covered from a low porosity of 5% such as engineering ceramics to 80% of foam-like materials within the same numerical strategy. It is found that the macroscopic property with low porosity shows good agreement with both experimental curve and micromechanics prediction, in which the elasticity coefficient is affected by morphology of internal structure. In contrast with the low porosity, the morphology effect diminishes and is hardly observed in high porosity region where the macroscopic stiffness is almost linear on the porosity.

X-ray microtomography

1988 ◽  
Vol 46 ◽  
pp. 998-999
Author(s):  
H.W. Deckman ◽  
B.F. Flannery ◽  
J.H. Dunsmuir ◽  
K.D' Amico
Keyword(s):  
Computed Tomography ◽  
Internal Structure ◽  
Imaging Technique ◽  
Three Dimensional ◽  
Tissue Structure ◽  
Individual Element ◽  
X Ray ◽  
Non Invasive ◽  
Panoramic Imaging ◽  
Three Dimensional Images

We have developed a new X-ray microscope which produces complete three dimensional images of samples. The microscope operates by performing X-ray tomography with unprecedented resolution. Tomography is a non-invasive imaging technique that creates maps of the internal structure of samples from measurement of the attenuation of penetrating radiation. As conventionally practiced in medical Computed Tomography (CT), radiologists produce maps of bone and tissue structure in several planar sections that reveal features with 1mm resolution and 1% contrast. Microtomography extends the capability of CT in several ways. First, the resolution which approaches one micron, is one thousand times higher than that of the medical CT. Second, our approach acquires and analyses the data in a panoramic imaging format that directly produces three-dimensional maps in a series of contiguous stacked planes. Typical maps available today consist of three hundred planar sections each containing 512x512 pixels. Finally, and perhaps of most import scientifically, microtomography using a synchrotron X-ray source, allows us to generate maps of individual element.

The internal structure of medullated wool

1984 ◽  
Vol 42 ◽  
pp. 388-389
Author(s):  
Leo Barish
Keyword(s):  
Light Microscopy ◽  
Internal Structure ◽  
Wool Fiber ◽  
Guard Hair ◽  
Bright Field ◽  
Wool Fibers ◽  
Thin Skin ◽  
Air Pockets

Although most of the wool used today consists of fine, unmedullated down-type fibers, a great deal of coarse wool is used for carpets, tweeds, industrial fabrics, etc. Besides the obvious diameter difference, coarse wool fibers are often medullated.Medullation may be easily observed using bright field light microscopy. Fig. 1A shows a typical fine diameter nonmedullated wool fiber, Fig. IB illustrates a coarse fiber with a large medulla. The opacity of the medulla is due to the inability of the mounting media to penetrate to the center of the fiber leaving air pockets. Fig. 1C shows an even thicker fiber with a very large medulla and with very thin skin. This type of wool is called “Kemp”, is shed annually or more often, and corresponds to guard hair in fur-bearing animals.

Porous materials from cellulose nanocrystal and mxene surfactants at the oil/water interface

2020 ◽  
Author(s):  
Bingqing qian ◽  
Haiqiao Wang ◽  
Dong Wang ◽  
Hao-Bin Zhang ◽  
Jessica Wu ◽  
...  
Keyword(s):  
Porous Materials ◽  
Cellulose Nanocrystal ◽  
Water Interface ◽  
Oil Water

The German Post-Critical Belief Scale: Internal and External Validity

2003 ◽  
Vol 34 (4) ◽  
pp. 219-226 ◽  
Author(s):  
Bart Duriez ◽  
Claudia Appel ◽  
Dirk Hutsebaut
Keyword(s):  
Internal Structure ◽  
Present Article ◽  
External Validity ◽  
German Version ◽  
Dutch Version ◽  
German Sample ◽  
Belief Scale ◽  
Internal And External Validity

Abstract: Recently, Duriez, Fontaine and Hutsebaut (2000) and Fontaine, Duriez, Luyten and Hutsebaut (2003) constructed the Post-Critical Belief Scale in order to measure the two religiosity dimensions along which Wulff (1991 , 1997 ) summarized the various possible approaches to religion: Exclusion vs. Inclusion of Transcendence and Literal vs. Symbolic. In the present article, the German version of this scale is presented. Results obtained in a heterogeneous German sample (N = 216) suggest that the internal structure of the German version fits the internal structure of the original Dutch version. Moreover, the observed relation between the Literal vs. Symbolic dimension and racism, which was in line with previous studies ( Duriez, in press ), supports the external validity of the German version.

Internal Structure of the Spanish Adaptation of the Eating Disorder Inventory-3

2012 ◽  
Vol 28 (1) ◽  
pp. 25-31 ◽  
Author(s):  
Paula Elosua ◽  
Alicia López-Jáuregui
Keyword(s):  
Eating Disorders ◽  
Eating Disorder ◽  
Internal Structure ◽  
Internal Consistency ◽  
Clinical Sample ◽  
Temporal Stability ◽  
Second Order ◽  
Order Structure ◽  
Eating Disorder Inventory ◽  
High Internal Consistency

In this study the Eating Disorder Inventory-3 was adapted to Spanish and analyzed the internal psychometric properties of the test in a clinical sample of females with eating disorders. The results showed a high internal consistency of the scores as well as high temporal stability. The factor structure of the scale composites was analyzed using confirmatory factor analysis. The results supported the existence of a second-order structure beyond the psychological composites. The second-order factor showed high correlation with the factor related to eating disorders. Overall, the Spanish version of the EDI-3 showed good psychometric qualities in terms of internal consistency, temporal stability and internal structure.

Sign in / Sign up

Export Citation Format

Share Document