This article continues the development of a hybrid scheme for simulating epitaxial growth that combines the Burton– Cabrera–Frank (BCF) model with kinetic Monte-Carlo (KMC) simulation. This is the first implementation of the scheme for ‘‘2+1’’ dimensional growth. Other improvements over an earlier version include the use of a more conventional KMC model and some refinement in the handling of th...

This study investigated the extent of heavy metal accumulation in leaf vegetables and associated potential health risks in agricultural areas of the Pearl River Delta (PRD), South China. Total concentrations of mercury (Hg), cadmium (Cd), lead (Pb), chromium (Cr) and arsenic (As) were determined in 92 pairs of soil and leaf vegetable (flowering Chinese cabbage, lettuce, pakchoi, Chinese cabbage...

We study analytically and numerically a one-dimensional model of interacting line defects (steps) fluctuating on a vicinal crystal. Our goal is to formulate and validate analytical techniques for approximately solving systems of coupled nonlinear stochastic differential equations (SDEs) governing fluctuations in surface motion. In our analytical approach, the starting point is the Burton-Cabrer...

The aim of the work described here was to improve our understanding of beta-cell function (BCF) and beta-cell mass (BCM) and their relationship in vivo using the minipig as a model for some of the aspects of human type 2 diabetes (T2DM). More specifically, the aim was to evaluate the following questions: How is BCF, especially high frequency pulsatile insulin secretion, affected by a primary re...

Fish propelled by body and/or caudal fin (BCF) locomotion can achieve high-efficiency and high-speed swimming performance, changing their motion to interact with external fluids. This flexural be prescribed through its curvature profile. work indicates that when the fish swims high efficiency, amplitude reaches a maximum at peduncle. In case of swimming, shows three maxima on entire length. It ...

The objectives of this study were to provide data that can be used to predict exposure-based effects of RDX in aged soil on multiple endpoint organisms representing two trophic levels. These data can be used for defining criteria or reference values for environmental management and conducting specific risk assessment. Dose-response experiments formed the basis for the evaluation of toxic effect...

Abstract Hot-point drills have been widely used for drilling boreholes in glaciers, ice caps and sheets. A hot-point drill melts through the thermal head at its bottom end. Penetration occurs a close-contact melting (CCM) process, which is melted, meltwater squeezed out by exerted force applied on head. During drilling, thin water film formed to separate from surrounding ice. For drill, rate of...

Poplar 69 (Populus deltoides Bartr. cv. ‘Lux’ (I-69/55)) was chosen for a pot experiment to study the growth and extraction of Cd from soil various parts one-year-old trees growing in upright artificial leaning (45°) patterns under different stress. The results indicated considerable tolerance both poplar (UP) (LP) stress soil, though with significant inhibition application. LP demonstrated sig...

The high level of community activity around the river has resulted in levels heavy metals contained water. Commonly found such as zinc (Zn), mercury (Hg), and copper (Cu). To reduce or remove waters, phytoremediation techniques are used. purpose this study was to determine ability water hyacinth plants (E. crassipes) remediating Zn2+ metal contaminated Lake Tempe research method used includes s...