Specifications

macropore continuity and of neighboring macropores. This paper describes a laboratory
investigation of the effects of macropores, with varying degrees and types of continuity, on the
transport and distribution of solutes in a sandy soil from the northern Loess Plateau, China.
Breakthrough curves were obtained from 60 cm tall, 2-D columns containing standardized
artificial macropores using an input solution of 1,190 mg/L KBr and 100 mg/L FD&C Blue #1
under a constant hydraulic head of 8 cm. The types of macropore were: open at both the surface
and bottom of the soil column (O-O); open at the surface, closed at the bottom (O-C); and closed
at the surface, open at the bottom (C-O). Columns with no macropores served as a control. In the
O-O columns the solution reached the bottom 10-50 times faster than in any other treatment,
bypassing most of the soil matrix. The presence of an O-C macropore resulted in weak
retardation and much deeper penetration of the bromide and FD&C Blue #1 solution than in the
control columns. However, the C-O macropore had little effect on either breakthrough curves or
solute distributions. In further experiments that considered neighboring macropores effects, an
inclined macropore strongly affected solute concentrations in the profile around a nearby vertical
macropore. It was concluded that the length, type and position of single macropores, and the
presence of neighboring macropores, all affect soil water flow and solute infiltration parameters
in a sandy loam soil. © 2013 Springer-Verlag Berlin Heidelberg.
Number of references: 25
Main heading: Solute transport
Controlled terms: Bioactivity - Finite difference method - Sand - Soil moisture
Uncontrolled terms: Break through curve - Chemical transport - Distribution of solute
- Infiltration parameters - Laboratory investigations - Soil water flows - Solute
concentrations - Solute distribution
Classification code: 461.6 Medicine and Pharmacology - 483.1 Soils and Soil Mechanics -
921.6 Numerical Methods
DOI: 10.1007/s12665-013-2339-6
Database: Compendex
Compilation and indexing terms, © 2013 Elsevier Inc.
12.
Accession number: 20131516189211
Title: Study on the interface diffusion bonding of the copper alloy/30CrMnSi steel
Authors: Zou, Juntao1 ; Liu, Yanfeng2 ; Pei, Lu1 ; Wang, Xianhui1 ; Liang, Shuhua1/邹军涛;刘艳
峰;;王献辉;梁淑华
Author affiliation: 1 School of Materials Science and Engineering, Xi'an University of
Technology, Xi'an 710048, China
2 Department of Chemistry and Chemical Engineering, Shangluo University, Shangluo 726000,
China
Corresponding author: Zou, J. ([e-mail])
Source title: Materials Science Forum
Abbreviated source title: Mater. Sci. Forum
Volume: 749
Monograph title: Materials Performance, Modeling and Simulation
Issue date: 2013
Publication year: 2013