نتایج جستجو برای: terraces

تعداد نتایج: 1723  

2008
Haishen Lü Yonghua Zhu Todd H. Skaggs Zhongbo Yu

In the hilly regions of China, developing sustainable agriculture requires implementing conservation management practices that prevent soil erosion and conserve soil and water resources. In the semiarid northwest Loess Plateau, the primary conservation management practice is terracing. Numerical simulation of soil water dynamics in terraces is potentially an efficient means of investigating the...

2006

Detailed description of the geology, topography and terraces of the Danube Bend was presented in Chapter 3. “Traditional” terrace ages concerning this area were derived from “relevant” data of the neighbouring valley sections, as lack of datable material prevented the Danube Bend terraces from setting up a more reliable chronological frame. Application of a new dating method was necessary to qu...

2004
J. Kallunki

– Two mechanisms for the breakdown of step flow growth, in the sense of the appearance of steps of opposite sign to the original vicinality, are studied by kinetic Monte Carlo simulations and scaling arguments. The first mechanism is the nucleation of islands on the terraces, which leads to mound formation if interlayer transport is sufficiently inhibited. The second mechanism is the formation ...

1972
George Miles

People rehoused in tower blocks are usually glad to be out of sub-standard housing but may soon long for the way of life that died when tenements and terraces were demolished.

Journal: :Acta geographica Slovenica 2017

Journal: :Journal of the American Chemical Society 2015
Kai Golibrzuch Pranav R Shirhatti Jan Geweke Jörn Werdecker Alexander Kandratsenka Daniel J Auerbach Alec M Wodtke Christof Bartels

Directly measuring the rate of a surface chemical reaction remains a challenging problem. For example, even after more than 30 years of study, there is still no agreement on the kinetic parameters for one of the simplest surface reactions: desorption of CO from Pt(111). We present a new experimental technique for determining rates of surface reactions, the velocity-selected residence time metho...

2001
Berhanu Gebremedhin Scott M. Swinton

A double hurdle statistical analysis of 250 farms in the Tigray region of Ethiopia reveals different causal factors for soil conservation adoption versus intensity of use. Farmers’ reasons for adopting soil conservation measures vary sharply between stone terraces and soil bunds. Long-term investments in stone terraces were associated with secure land tenure, labour availability, proximity to t...

2012
PETER C. PATTON

Harris Wash, a tributary of the Escalante River in south-central Utah, has two wellpreserved alluvial terraces of compound origin in its lower reaches. The alluvial stratigraphy of the deposits that compose these terraces reflects the complex processes of canyon filling and erosion. The compound terraces were formed by general aggradation of the valley, by deposition from large floods that also...

2017
Zhijun Gong Sheng-Hua Li Bo Li

The Tian Shan range lies in the actively deforming part of the India-Asia collision zone. The uplift rate and deformation pattern of the Tian Shan are important for understanding the dynamics of crustal deformation in the region. The river terraces in northern Tian Shan provide key records of past changes in climate and/or regional tectonics. In this study, a terrace sequence along the Manas Ri...

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