نتایج جستجو برای: scannining electron micrograph

تعداد نتایج: 308660  

2007
A. Jallipalli G. Balakrishnan S. H. Huang A. Khoshakhlagh L. R. Dawson D. L. Huffaker

We describe a mathematical model to elucidate the strain energy distribution in the atomic arrangement resulting from a periodic pure edge, 901 interfacial misfit dislocation (IMF) arrays in highly mismatched III–V semiconductors. Using molecular mechanics methods, we calculate strain energy at the atomic level by considering the stretch and bend of each bond in the system under consideration. ...

2012
Camille Perrot Guy Bonnet Minh Tan Hoang Fabien Chevillotte François-Xavier Bécot Laurent Gautron Arnaud Duval

This article explores the applicability of numerical homogenization techniques for analyzing transport properties in real foam samples mostly open-cell, to understand long-wavelength acoustics of rigid-frame air-saturated porous media, on the basis of microstructural parameters. Experimental characterization of porosity and permeability of real foam samples are used to provide the scaling of a ...

2013
Yonghua Lin

This research was to study the effects of lactic acid bacteria fermentation on the quality of little yellow croaker. The effects of the LAB starter composed of Lactobacillus plantarum and Lactobacillus acidophilus on the quality of little yellow croaker were studied through a 72 h fermentation process in this study. During 72 h fermentation at 30°C, little yellow croaker inoculated with the LAB...

2016
I. E. Carter K. Weir M. W. McCall A. R. Parker

An extended spectroscopic study on the left-through-left circularly polarized reflection spectra of a large number of beetles from the Australasian Scrabaeidae:Cetoniinae of the Lomaptera genus was undertaken. We have obtained a five-category spectral classification. The principal spectral features, which even within the genus range from blue to infrared, are related to structural chirality in ...

2013
Young-Jun Lee Dae-Young Kim Kap-Ho Lee Moon-Hee Han Kyoung-Soo Kang Ki-Kwang Bae Jong-Hyeon Lee

Cubic delta-tantalum nitride (δ-TaN) nanoparticles were selectively prepared using a K2TaF7 + (5 + k) NaN3 + kNH4F reactive mixture (k being the number of moles of NH4F) via a combustion process under a nitrogen pressure of 2.0 MPa. The combustion temperature, when plotted as a function of the number of moles of NH4F used, was in the range of 850°C to 1,170°C. X-ray diffraction patterns reveale...

2003
Jun Wang Xiong Liu Sundar A. Christopher Jeffrey S. Reid Elizabeth Reid Hal Maring

[1] Using data collected during the Puerto Rico Dust Experiment (PRIDE), we examine the effect of nonspherical phase functions on dust aerosol retrievals from geostationary satellites. We utilize a statistical model based on Scanning Electron Micrograph (SEM) analysis of individual dust particles. Using T-matrix calculations and assuming that dust particles are randomly-orientated oblate sphero...

Journal: :Current Biology 2016
Frederic Berger John L. Bowman Takayuki Kohchi

Figure 1. Aspects of Marchantia biology. (A) Vegetative haploid life form (thallus) in laboratory culture. (B) Female reproductive organs (archegoniophores) in the shape of palm trees growing from the haploid thallus of a female plant. (C) Male reproductive organs (antheridiophores) in the shape of umbrellas growing from the haploid thallus of a male plant. (D) Scanning electron micrograph of t...

Journal: :Histology and histopathology 1994
I A Sadek F Abdul-Salam

Toads injected with 2 mg 7,12-dimethyl-benza(a)anthracene (DMBA)/toad, 3 times/week for 12 weeks induced liver tumors in 12 out of 50 cases. The electron micrograph of toad liver tumor showed disorganization of the rough endoplasmic reticulum which encircles or partially surrounds the mitochondria. Cristae mitochondrialis are rare in comparison with control. Enhancement of liver tumor incidence...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Johanna Nelson Xiaojing Huang Jan Steinbrener David Shapiro Janos Kirz Stefano Marchesini Aaron M Neiman Joshua J Turner Chris Jacobsen

X-ray diffraction microscopy complements other x-ray microscopy methods by being free of lens-imposed radiation dose and resolution limits, and it allows for high-resolution imaging of biological specimens too thick to be viewed by electron microscopy. We report here the highest resolution (11-13 nm) x-ray diffraction micrograph of biological specimens, and a demonstration of molecular-specific...

Journal: :Acta Materialia 2021

A statistical continuum model is developed in the present study which uses microstructural information for a two-phase Ti-6Al-4V alloy to simulate microstructure evolution during hot isothermal compression. Current models of prediction often use finite element methods. However, here does not rely onfinite methods and thus can be performed much faster with less computational resources without sa...

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