Results 21 to 30 of about 60,131 (235)

An electron-induced secondary electron model for photoelectric sensitivity and quantum efficiency of metal surfaces

open access: yesResults in Physics, 2021
This paper studies an electron-induced secondary electron model ESEM for photoelectric sensitivity PS and quantum efficiency QE of metal surfaces near threshold frequency γ0, which was developed from Sommerfeld’s theory and the theories of transport and ...
Ai-Gen Xie, Hong-Jie Dong, Zheng Pan
doaj   +1 more source

The factorial validity and reliability of three versions of the Aggression Questionnaire using Confirmatory Factor Analysis and Exploratory Structural Equation Modelling [PDF]

open access: yes, 2015
The Aggression Questionnaire (AQ) measures aggression in four domains: Anger, Hostility, Physical Aggression and Verbal Aggression. Moreover, a number of shorter versions of the AQ have emerged.
Harvey, Séamus A.   +2 more
core   +1 more source

Carbonation kinetics in roman-like lime mortar

open access: yesMateriales de Construccion, 2004
The kinetic parameterisation of lime mortar carbonation is a useful technique for understanding ancient building methods and the long-lived physical-chemical stability of roman monuments.
S. Sánchez-Moral   +4 more
doaj   +1 more source

Psychometric Properties of the Adult Self-Report: Data from over 11,000 American Adults

open access: yesStats, 2020
The first purpose of this study was to examine the factor structure of the Adult Self-Report (ASR) via traditional confirmatory factor analysis (CFA) and contemporary exploratory structural equation modeling (ESEM).
Michelle Guerrero   +2 more
doaj   +1 more source

Highly Strained Compliant Optical Metamaterials with Large Frequency Tunability [PDF]

open access: yes, 2010
Metamaterial designs are typically limited to operation over a narrow bandwidth dictated by the resonant line width. Here we report a compliant metamaterial with tunability of Δλ ~ 400 nm, greater than the resonant line width at optical frequencies ...
Atwater, Harry A.   +4 more
core   +2 more sources

Scanning Probe Microscopy as a Tool for Investigation of Biomaterials

open access: yesAdvances in Electrical and Electronic Engineering, 2012
Super-microscopic techniques like scanning tunnelling microscopy, atomic force microscopy or scanning near-field optical microscopy allows investigate micro- and/or nano-scale surfaces and structures.
Veronika Novotna   +3 more
doaj   +1 more source

Human hepatic cell behavior on polysulfone membrane with double porosity level [PDF]

open access: yes, 2013
In the membrane-based bioartificial livers developed up to now,the hepatic cells were located either in the fibers lumen or in the cartridge,with limited capacity for cell hosting.Here,we designed a polysulfone (PSU) membrane with a double porosity ...
Adrianus, Gerard Nathanael   +6 more
core   +2 more sources

Análisis estructural de la Escala de Bienestar Psicológico de Ryff en universitarios mexicanos

open access: yesLiberabit, 2019
Objetivos: realizar el análisis de la estructura interna de la versión en español de la Escala de Bienestar Psicológico de Ryff (PWBS-E) en estudiantes universitarios (n = 1700; 54.75% mujeres; Medad = 19.23) de una institución pública en Veracruz ...
Sergio Dominguez-Lara   +5 more
doaj   +1 more source

A validation study of the self-compassion scale-short form (SCS-SF) with ant colony optimization in a Turkish sample [PDF]

open access: yesPsihologija, 2023
The general purpose of this study is to validate the Turkish version of the short form of Self- Compassion Scale (SCS) by Ant Colony Optimization (ACO). For this purpose, data were collected from two different samples. Sample-1 (n = 398) and Sample-2 (n =
Koğar Esin Yılmaz, Koğar Hakan
doaj   +1 more source

Atmospheric ice nuclei in the Eyjafjallajökull volcanic ash plume [PDF]

open access: yes, 2011
We have sampled atmospheric ice nuclei (IN) and aerosol in Germany and in Israel during spring 2010. IN were analyzed by the static vapor diffusion chamber FRIDGE, as well as by electron microscopy.
Ardon-Dryer, Karin   +14 more
core   +2 more sources

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