نتایج جستجو برای: mixed material

تعداد نتایج: 576160  

2010
Tatyana Sizyuk Ahmed Hassanein

Future reactors, e.g., ITER can require multiple plasma facing components (PFC) surfaces such as Be, C and W. Soon after the start of normal operation as well as after plasma transient events the surfaces can behave much differently than the original surfaces, and transport of eroded particles can influence plasma performance and component lifetime. A new dynamic version of ITMC-DYN, part of th...

Journal: :The journal of contemporary dental practice 2017
Veena B Benakatti Abhijit P Patil Jayashee Sajjanar Supriya S Shetye Ulhas N Amasi Raghunath Patil

AIM This study evaluated the antibacterial activity and dimensional stability of irreversible hydrocolloids mixed with different concentrations of chlorhexidine gluconate instead of water. MATERIALS AND METHODS Experimental specimens (45 specimens) were prepared and allocated into three groups of 15 each. Group I: Impression material mixed with distilled water served as control. Groups II and...

Journal: :The Analyst 2012
Xiuling Li Zhimou Guo Qianying Sheng Xingya Xue Xinmiao Liang

Novel polar-copolymerized mixed-mode RP18/SCX material was developed for feasible phosphopeptide enrichment, in which multiply and singly phosphorylated peptides could be sequentially eluted and separated with high selectivity.

2008
Richard J. Stancliffe

We model the evolution of the abundances of light elements in carbon-enhanced metalpoor (CEMP) stars, under the assumption that such stars are formed by mass transfer in a binary system. We have modelled the accretion of material ejected by an asymptotic giant branch star on to the surface of a companion star. We then examine three different scenarios: one in which the material is mixed only by...

Journal: :Environmental science & technology 2007
Troy Hawkins Chris Hendrickson Cortney Higgins H Scott Matthews Sangwon Suh

Materials flow analysis models have traditionally been used to track the production, use, and consumption of materials. Economic input-output modeling has been used for environmental systems analysis, with a primary benefit being the capability to estimate direct and indirect economic and environmental impacts across the entire supply chain of production in an economy. We combine these two type...

Journal: :Remote Sensing 2014
Xiaohui Yang Xulin Guo

Spectral vegetation indices have been the primary resources for characterizing grassland vegetation based on remotely sensed data. However, the use of spectral indices for vegetation characterization in grasslands has been challenged by the confounding effects from external factors, such as soil properties, dead materials, and shadowing of vegetation canopies. Dead materials refer to the dead c...

2004
Shu Liu Yuh J. Chao Xiankui Zhu

The propensity of the transition of fracture type in either brittle or ductile cracked solid under mixed-mode I and III loading conditions is investigated. A fracture criterion based on the competition of the maximum normal stress and maximum shear stress is utilized. The prediction of the fracture type is determined by comparing smax=rmax at a critical distance from the crack tip to the materi...

2014
V. Nicodème Fassinou Hotegni Willemien J. M. Lommen Euloge K. Agbossou Paul C. Struik

Cultural practices can affect the quality of pineapple fruits and its variation. The objectives of this study were to investigate (a) effects of weight class and type of planting material on fruit quality, heterogeneity in quality and proportion and yield of fruits meeting European export standards, and (b) the improvement in quality, proportion and yield of fruits meeting export standards when...

Journal: :Journal of synchrotron radiation 2013
Karim J Sutton Sarah A Barnett Kirsten E Christensen Harriott Nowell Amber L Thompson David R Allan Richard I Cooper

Overlapping absorption edges will occur when an element is present in multiple oxidation states within a material. DetOx is a program for partitioning overlapping X-ray absorption spectra into contributions from individual atomic species and computing the dependence of the anomalous scattering factors on X-ray energy. It is demonstrated how these results can be used in combination with X-ray di...

2005
David P. Morton Feng Pan

We describe a stochastic network interdiction model for locating sensors that detect nuclear material. A nuclear material smuggler selects a path through a transportation network that maximizes the probability of avoiding detection. An interdictor installs sensors to minimize that maximum probability. We formulate this problem as a bi-level stochastic mixed-integer program, and then focus on a ...

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