نتایج جستجو برای: terraces

تعداد نتایج: 1723  

Journal: :Chem 2021

Understanding the relationship between catalytic selectivity and surface structures of heterogeneous catalysts is essential for high-performance catalysis. In this issue Chem, Zhu et al. report a puzzle-solving strategy relying on single-crystal foils Pearson correlation analysis to determine dependence activity principal parameters. Heterogeneous catalysis solid surfaces represents most pervas...

Journal: :Geophysical Research Letters 2014

2012
N. HIGHTOWER John F. Weishampel Jessica N. Hightower

Human land use legacies have significant and long lasting impacts across landscapes. However, investigating the impacts of ancient land use legacies (>400 years) remains problematic due to the difficulty in detecting ancient land uses, especially those beneath dense canopies. The city of Caracol, one of the most important Maya archaeological sites in Belize, was abandoned after the collapse of ...

جیحانی, حمیدرضا , زالی, طه,

Dagh-Baghi is a disregarded garden located in Khoy, a city in the northwest of Iran. Because of its location along with good weather, Khoy has always had great potential to host many gardens. This garden, however, is the only remaining historic garden. The current Dagh Baghi is a meadow in the southern suburb of the city with a few fruit trees. This article studies the spatial structure of the ...

2016
P. Poláčik Paul Rabinowitz

The Gibbons conjecture stating the one-dimensional symmetry of certain solutions of semilinear elliptic equations has been proved by several authors. We show how attractivity properties of minimal propagating terraces of one-dimensional parabolic problems can be used in a proof of a version of this result and related statements.

2016
Chad D. Yuen Gordon J. Miller Patricia A. Thiel

Based on X-ray photoelectron spectroscopy, Gd5Ge 4(010) does not show evidence of surface segregation. Scanning tunneling microscopy reveals two types of terraces which alternate laterally on the surface. From the step heights, these two surface terminations are assigned as dense, Gd-pure layers in the bulk structure. There is evidence of reconstruction on one type of terrace.

2003
JOHN W. BELL FALK AMELUNG GEOFFREY C. P. KING

The Carboneras fault is one of three principal Cenozoic strike-slip faults in the Betic Cordillera of southeastern Spain. In this study, we characterize the paleoseismic history of the Carboneras fault by examining the evidence for lateral offset of 85-180 ka ‘Iyrrhenian marine terraces, by dating the left-lateral stream-channel offsets in La Serrata, and by postulating a late Holocene coastal ...

Journal: :Remote Sensing 2014
Jessica N. Hightower A. Christine Butterfield John F. Weishampel

Human land use legacies have significant and long-lasting ecological impacts across landscapes. Investigating ancient (>400 years) legacy effects can be problematic due to the difficulty in detecting specific, historic land uses, especially those hidden beneath dense canopies. Caracol, the largest (~200 km2) Maya archaeological site in Belize, was abandoned ca. A.D. 900, leaving behind myriad s...

2013
M. López-Vicente J. Poesen A. Navas L. Gaspar

Overland flow connectivity and runoff and sediment trap effectiveness are currently the cutting edge topics in soil erosion research. The effect of agricultural terraces, irrigation channels and trails on runoff and soil erosion modelling at catchment scale is still a remaining research question. In this study we run the index of connectivity of Borselli et al. (2008) and a modified version of ...

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