نتایج جستجو برای: nitrogen dynamics

تعداد نتایج: 554220  

2009
Atul Jain Xiaojuan Yang Haroon Kheshgi A. David McGuire Wilfred Post David Kicklighter

[1] Nitrogen cycle dynamics have the capacity to attenuate the magnitude of global terrestrial carbon sinks and sources driven by CO2 fertilization and changes in climate. In this study, two versions of the terrestrial carbon and nitrogen cycle components of the Integrated Science Assessment Model (ISAM) are used to evaluate how variation in nitrogen availability influences terrestrial carbon s...

2013
B. Thamdrup K. Dähnke

Introduction Conclusions References

2015
Hongqiang Xie Guihua Li Jinping Yao Wei Chu Ziting Li Bin Zeng Zhanshan Wang Ya Cheng

We report on generation of third harmonic from nitrogen molecules on the excited state with a weak driver laser pulse at a mid-infrared wavelength. The excited nitrogen molecules are generated using a circularly polarized intense femtosecond pulse which produces energetic electrons by photoionization to realize collisional excitation of nitrogen molecules. Furthermore, since the third harmonic ...

2007
S. HANSEN

A dynamic simulation model for the soil plant system is described. The model includes a number of main modules viz. a water model, a soil temperature model, a soil nitrogen model including a submodel for soil organic matter dynamics, and a crop model including a submodel for nitrogen uptake. The soil part of the model has a one dimensional vertical structure. The soil profile is divided into la...

2011
Yolima Carrillo Becky A. Ball Mark A. Bradford Carl F. Jordan Marirosa Molina

Plant chemical composition and the soil community are known to influence litter and soil organic matter decomposition. Although these two factors are likely to interact, their mechanisms and outcomes of interaction are not well understood. Studies of their interactive effects are rare and usually focus on carbon dynamics of litter, while nutrient dynamics in the underlying soil have been ignore...

ژورنال: علوم آب و خاک 2022

Using water and fertilizer management at the farm level can be increased water use efficiency and reduce the volume of drainage water, fertilizer losses, and other pollutants in farmland with deep underground drains such as Khuzestan agro-industrial Companies. In the present study, a comprehensive simulation model for the water cycle and the nitrogen dynamics modeling was used for water and fer...

Journal: :Physical biology 2011
Daniel W Farrell Ming Lei M F Thorpe

Geometric targeting (GT) is a recently introduced method for rapidly generating all-atom pathways from one protein state to another, based on geometric rather than energetic considerations. To generate pathways, a bias is applied that gradually moves atoms toward a target structure, while a set of geometric constraints between atoms is enforced to keep the structure stereochemically acceptable....

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