نتایج جستجو برای: fine grain soil

تعداد نتایج: 340183  

Journal: :Remote Sensing 2017
Xiaoyu Song Guijun Yang Chenghai Yang Jihua Wang Bei Cui

Wheat grain protein content (GPC) is a key component when evaluating wheat nutrition. It is also important to determine wheat GPC before harvest for agricultural and food process enterprises in order to optimize the wheat grading process. Wheat GPC across a field is spatially variable due to the inherent variability of soil properties and position in the landscape. The objectives of this field ...

2010
Yukiko Imanishi Atsushi Bando Shintaro Komatani Shin-Ichiro Wada Kouichi Tsuji

Harmful elements (Pb, Se, Cd, etc.) in the soil samples were measured by X-ray fluorescence (XRF) method. We investigated the influence of the thickness of soil layer, the grain size of soils, and the water content in soils on XRF intensity. Since high-energy XRF such as Cd K was detected in deep inside of soils, a thickness of 10 mm was recommended. The soil sample with a small grain size gave...

Journal: :Pacific Symposium on Biocomputing. Pacific Symposium on Biocomputing 2001
Wellington Santos Martins Juan del Cuvillo F. J. Useche Kevin B. Theobald Guang R. Gao

This paper discusses the issues involved in implementing a dynamic programming algorithm for biological sequence comparison on a general-purpose parallel computing platform based on a fine-grain event-driven multithreaded program execution model. Fine-grain multithreading permits efficient parallelism exploitation in this application both by taking advantage of asynchronous point-to-point synch...

2014
Quanru Liu Xinhui Liu Chengyue Bian Changjian Ma Kun Lang Huifang Han Quanqi Li

Demand for food security and the current global warming situation make high and strict demands on the North China Plain for both food production and the inhibition of agricultural carbon emissions. To explore the most effective way to decrease soil CO2 emissions and maintain high grain yield, studies were conducted during the 2012 and 2013 summer maize growing seasons to assess the effects of w...

2005
CHARLES F. CHILCUTT L. TED WILSON ROBERT LASCANO KEVIN F. BRONSON JILL BOOKER

Soil physical and chemical properties can affect plant growth and nutrition, which in turn can affect a plantÕs attractiveness and susceptibility to insect herbivores. A further source of variation in these relationships is the spatial scale at which patterns are measured. Both the size of the area being sampled, or scale, and the distance between measurements, or grain, are parameters that aff...

Journal: :Perception & Psychophysics 1977

1997
Eugene V Maas Scott M. Lesch Leland E. Francois Catherine M. Grieve

Grain yield in wheat (Triticum aestivum L. emend. Thell.) is highly dependent upon the number of spike-hearing tillers produced by each plant. Soil salinity can greatly decrease their number and productivity. Knowing the contribution of specific tillers is essential for breeding salt-tolerant genotypes and for developing wheat growth simulation models. Our objective was to determine the effects...

1995
J. Varela

The physics motivations for a fine grain 1st level electron/photon trigger which exploits the properties of the CMS crystal calorimeter are briefly introduced. An implementation architecture that extends the present design of the CMS calorimeter trigger is described. We then discuss the characteristics and the requirements of the electronic circuits needed to implement the fine grained trigger ...

2005
Su-chu Lin Shu-Ling Huang Keh-Jiann Chen

To assign semantic roles in building Treebanks, there is a need for annotators having a guideline in determining semantic relations between phrasal head and its modifiers or arguments. Semantic roles are hard to have clear-cut definitions. It is not always easy to determine thematic relations between two concepts. This paper aims to introduce an integrated nominal modifier system. Basically we ...

Journal: :Proceedings. Biological sciences 2012
Z Y Yuan Han Y H Chen

Fine root production is the largest component of belowground production and plays substantial roles in the biogeochemical cycles of terrestrial ecosystems. The increasing availability of nitrogen (N) and phosphorus (P) due to human activities is expected to increase aboveground net primary production (ANNP), but the response of fine root production to N and P remains unclear. If roots respond t...

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