The retarded dopant diffusion in Si nanostructures is investigated using the first principles calculation. It is presented that weak dopant-dopant interaction energy (DDIE) in nanostructures is responsible for the suppressed dopant diffusion in comparison with that in bulk Si. The DDIE is significantly reduced as the diameter of the Si nanowire becomes smaller. The mechanical softening and quan...

Brain damage in Alzheimer's disease (AD) and mild cognitive impairment (MCI) is widespread with involvement of large portions of the neocortex and the subcortical white matter. A quantitative measure of neuronal damage of the entire brain might be valuable in the context of large-scale, longitudinal studies of these patients. This study investigated the extent of neuroaxonal injury of patients ...

Current dopant diffusion theory is based on dopant-point-defect interaction, and assumes that the number of dopant-defect pairs is much smaller than the unpaired dopant concentration. In cases where a large number of excess defects are created from implantation damage, this may no longer be a valid assumption. A new derivation of the dopant and defect equations is presented which is valid for a...

l objetivo fue comparar la altura de planta y producción brotes en pitahaya (Hylocereus sp.) cv. Orejona su relación con las variables climáticas dos sitios Costa Rica. El ensayo se realizó San Mateo, Alajuela, Santa Cruz, Guanacaste, febrero 2017 a noviembre 2019. Las evaluadas fueron: (AP, cm), número vegetativos (NBV), reproductivos (NBR), precipitación pluvial (P, mm), humedad relativa (HR,...

3) The registration function which assimilates the existing prototype model and the most recently acquired range image. 4) The NBV system which presents three separate methods for determining the NBV position from the current state of the model. 5) The graphical user interface with which the user can call the NBV system, view the images acquired at each iteration, review statistics pertaining t...

it has been recently shown that manufacturing p-n-junctions, field-effect and bipolar transistors, thyristors in a multilayer structure by diffusion or ion implantation with the optimization of dopant and/or radiation defects leads to increase the sharpness of p-n-junctions (both single p-n-junctions and p-n-junctions framework their system). due to the optimization, one can also obtain increas...

Annular dark field scanning transmission electron microscope (ADF-STEM) images allow detection of individual dopant atoms located on the surface of or inside a crystal. Contrast between intensities of an atomic column containing a dopant atom and a pure atomic column in ADF-STEM image depends strongly on specimen parameters and microscope conditions. Analysis of multislice-based simulations of ...

This paper investigates safe and efficient map-building strategies for a mobile robot with imperfect control and sensing. In the implementation, a robot equipped with a range sensor builds a polygonal map (layout) of a previously unknown indoor environment. The robot explores the environment and builds the map concurrently by patching together the local models acquired by the sensor into a glob...

Previous studies revealed that people with binocular vision disorders have poor postural stability. However, most of the research was performed only on children and under binocular viewing condition, that could negatively affect the results. The aim of the current study was to investigate the influence of extra-ocular proprioceptive signals on postural stability in young adults with binocular v...