نتایج جستجو برای: ammonia nh3
تعداد نتایج: 31359 فیلتر نتایج به سال:
Agricultural nitrogen (N) application to soils is the main source of atmospheric ammonia (NH3). Ammonia negatively impacts environment on a large scale. However, emissions NH3 are affected by...
In this manuscript, the authors presented several lines of evidence in supporting their argument that dew is a nighttime reservoir and a morning source for atmospheric ammonia (NH3). They have demonstrated by the laboratory experiments using artificial dew solutions that the release of ammonia from drying dew can be predicted from dew ion composition. Their field measurement results have shown ...
A new ammine complex, Li2B12H12$7NH3, that can reversibly release all the NH3 at below 200oC and reabsorb NH3 at room temperature and 0.5 bar was synthesized and investigated for reversible ammonia storage or indirect hydrogen storage.
The cyclotron-produced radionuclide, 13N, was used to label ammonia and to study its metabolism in a group of 5 normal subjects and 17 patients with liver disease, including 5 with portacaval shunts and 11 with encephalopathy. Arterial ammonia levels were 52-264 micron. The rate of ammonia clearance from the vascular compartment (metabolism) was a linear function of its arterial concentration: ...
This chapter considers the emissions of ammonia (NH3), nitrous oxide (N2O), other oxides of nitrogen (NOx), carbon dioxide (CO2), methane (CH4), and non-methane volatile organic compounds (NMVOCs) from agricultural soils to which nitrogen (N)-containing fertilizers are applied. For NH3, emissions following application of animal manures to land are considered in SNAP code 100900, Manure Manageme...
New waste management methods are needed that can protect the environment and allow manure management to switch back to a recycling view of manure handling. We investigated the use of gas-permeable membranes as components of new processes to capture and recover the ammonia in the liquid manures or in the air of poultry houses and other livestock installations. The basic process includes the pass...
SURFATM-NH3: a model combining the surface energy balance and bi-directional exchanges of ammonia applied at the field scale E. Personne, B. Loubet, B. Herrmann, M. Mattsson, J. K. Schjoerring, E. Nemitz, M. A. Sutton, and P. Cellier UMR Environment et Grandes Cultures/INRA – AgroParisTech, 78 850 Thiverval Grignon, France Agroscope Reckenholz-Tänikon Research Station ART, Reckenholzstrasse 191...
The collisions also injected tropospheric ammonia (NH3) in the stratosphere where it is ordinarily absent. SignaWe present high–resolution 11–mm NH3 observations of the Shoemaker–Levy 9 sites that were conducted on May 15–18, tures from stratospheric ammonia were detected from 1995 UT at the NASA Infrared Telescope Facility. No emission thermal infrared spectroscopy at the NASA Infrared from st...
CONTEXT A discrepancy exists between the abundance of ammonia (NH3) derived previously for the circumstellar envelope (CSE) of IRC+10216 from far-IR submillimeter rotational lines and that inferred from radio inversion or mid-infrared (MIR) absorption transitions. AIMS To address the discrepancy described above, new high-resolution far-infrared (FIR) observations of both ortho- and para-NH3 t...
Improved data on biosphere-atmosphere exchange are fundamental to understanding the production and fate of ammonia (NH3) in the atmosphere. The GRAMINAE Integrated Experiment combined novel measurement and modelling approaches to provide the most comprehensive analysis of the interactions to date. Major intercomparisons of micrometeorological parameters and NH3 flux measurements using the aerod...
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