Results 171 to 180 of about 5,400,490 (233)

Collagen I Defect Corneal Profiles in Osteogenesis Imperfecta

Cornea, 2018
Purpose: The goal of this study was to evaluate corneal profiles of patients with osteogenesis imperfecta (OI) due to a collagen I gene mutation. Methods: This was a cross-sectional comparative study.
Otavio A, Magalhaes, Helena C, Rohenkohl, Liliane Todeschini, de Souza, Lavinia, Schuler-Faccini, Têmis M, Félix   +4 more
openaire   +2 more sources

Surface spatial profiles of defects in GaN

SPIE Proceedings, 2006
Surface profiles of deep levels in GaN sample grown by metal-organic chemical vapor deposition and by hydride vapor phase epitaxy are measured by differential deep level transient spectroscopy (DDLTS). The concentration of acceptor defects at the surface are expected to be lower than the bulk defect concentration because of the shift in Fermi level at ...
D. K. Johnstone, S. Akarca-Biyikli, J. Xie, Y. Fu, C. W. Litton, H. Morkoc   +5 more
openaire   +1 more source

Defect shape detection and defect reconstruction in active thermography by means of two-dimensional convolutional neural network as well as spatiotemporal convolutional LSTM network

Quantitative InfraRed Thermography Journal, 2020
A neural network (NN) for semantic segmentation (U-Net) was used for the detection of crack-type defects from thermography sequences. For this task, data sequences of forged steel parts were acquired through induction thermography and the corresponding ...
D. Müller, U. Netzelmann, B. Valeske
semanticscholar   +1 more source

Descriptive profile of birth defects among livebirths in Singapore

Teratology, 1992
AbstractA case‐control study of birth defects was carried out in Kandang Kerbau Hospital in Singapore for a three‐year period from January 1986 until December 1988. This paper presents the descriptive profile of birth defects among livebirths seen in that hospital.
Thein, M.M., Koh, D., Tan, K.L., Lee, H.-P., Yip, Y.Y., Tye, C.Y., Phoon, W.O.   +6 more
openaire   +2 more sources

Influence of laser beam profile on the selective laser melting process of AlSi10Mg

, 2020
Selective laser melting (SLM) offers great potential to manufacture customized and complex metallic parts. Major drawbacks that limit its industrial application are the high cost of the process that is related to low process speeds and issues with ...
T. Wischeropp, H. Tarhini, C. Emmelmann
semanticscholar   +1 more source

Correlation of defect profiles with carrier profiles of InAs epilayers on GaP

Applied Physics Letters, 2001
The carrier profile for InAs films grown on GaP is modeled as a first-order approximation which assumes that 90° edge dislocation intersections and the threading dislocation intersections act as shallow donors. Due to dislocation annihilation during growth, the threading dislocation intersection density decreases as the inverse of the distance x from ...
H. Tsukamoto, E.-H. Chen, J. M. Woodall, V. Gopal   +3 more
openaire   +1 more source

A nonlinear dynamic vibration model of a defective bearing: the importance of modelling the angle of the leading and trailing edges of a defect

Structural Health Monitoring, 2020
Rolling element bearings eventually become worn and fail by developing surface defects, such as spalls, dents and pits. Previous researchers have tested bearings with defects that have sharp 90 ° rectangular edges that were used to develop analytical ...
Francesco Larizza, C. Howard, S. Grainger, Wenyi Wang   +3 more
semanticscholar   +1 more source

Discrimination between defective and non-defective Brazilian coffee beans by their volatile profile

Food Chemistry, 2008
Abstract The coffee roasted in Brazil is considered to be of low quality, due to the presence of defective coffee beans that depreciate the beverage quality. In view of the fact that coffee flavour is directly related to the volatile compounds produced during roasting, the objective of the present study was to perform a comparative evaluation of the ...
Pamela D.C. Mancha Agresti, Adriana S. Franca, Leandro S. Oliveira, Rodinei Augusti   +3 more
openaire   +1 more source

Defect Profiling of Oxygen-Related Defects Using a Slow Positron Beam

1996
Variable-energy positron annihilation spectroscopy (PAS) is a relatively new technique for probing subsurface defects, and has provided novel insights into defects associated with silicon-based systems such as SiO2/Si, silicon nitrides, SIMOX and ion-irradiated Si.
A. P. Knights, R. D. Goldberg, U. Myler, P. J. Simpson   +3 more
openaire   +1 more source

Automatic Defect Recognition Method of Aluminium Profile Surface Defects

2021 7th International Conference on Robotics and Artificial Intelligence, 2021
Lei Yang, Ge Gao, Man Wu, Jianyong Li
openaire   +1 more source