نتایج جستجو برای: n concentration nh3

تعداد نتایج: 1314055  

2004
Michael H. Wong Gordon L. Bjoraker Michael D. Smith F. Michael Flasar Conor A. Nixon

We present the rst detection of NH3 ice in the thermal infrared in Jupiter’s atmosphere using Cassini CIRS observations in the 10m region obtained on 31 December 2000 and 1 January 2001. We identify a brightness temperature di;erence ≡ TB(1040 cm−1) − TB(1060 cm−1) as an indicator of spectrally identi able NH3 ice, where 1040 cm−1 is an adjacent continuum region and 1060 cm−1 is the NH3 ice fea...

Journal: :Applied and environmental microbiology 2016
Brett L Mellbye Andrew Giguere Frank Chaplen Peter J Bottomley Luis A Sayavedra-Soto

UNLABELLED Nitrosomonas europaea is a chemolithoautotrophic bacterium that oxidizes ammonia (NH3) to obtain energy for growth on carbon dioxide (CO2) and can also produce nitrous oxide (N2O), a greenhouse gas. We interrogated the growth, physiological, and transcriptome responses of N. europaea to conditions of replete (>5.2 mM) and limited inorganic carbon (IC) provided by either 1.0 mM or 0.2...

2003

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...

Journal: :Bioresource technology 2013
Ka Yu Cheng Anna H Kaksonen Ralf Cord-Ruwisch

Ammonium (NH4(+)) migration across a cation exchange membrane is commonly observed during the operation of bioelectrochemical systems (BES). This often leads to anolyte acidification (pH <5.5) and complete inactivation of biofilm electroactivity. Without using conventional pH controls (dosage of alkali or pH buffers), the present study revealed that anodic biofilm activity (current) could be su...

2000
Eiko Nemitz Mark A. Sutton Andreas Gut Roberto San José Søren Husted Jan K. Schjoerring

Within-canopy profiles of ammonia (NH3) and measurements of the canopy turbulence characteristics were used to calculate the vertical source/sink density profile of NH3 and sensible heat in a mature oilseed rape (Brassica napus) canopy. For the analysis, the inverse Lagrangian technique (ILT) based on localized near-field theory was used. Turbulence was measured with a standard ultrasonic anemo...

Journal: :Bioresource technology 2005
Ying-Chien Chung Yu-Yen Lin Ching-Ping Tseng

High efficiency of NH3 and H2S removal from waste gases was achieved by the biotrickling filter. Granular activated carbon (GAC), inoculated with Arthrobacter oxydans CH8 for NH3 removal and Pseudomonas putida CH11 for H2S removal, was used as packing material. Under conditions in which 100% H2S was removed, extensive tests to eliminate high concentrations of NH3 emission-including removal char...

Journal: :Poultry science 2013
D M Miles J P Brooks M R McLaughlin D E Rowe

Ammonia (NH3) volatilized from broiler litter diminishes indoor air quality, which can potentially decrease bird productivity. Emissions of NH3 exhausted from broiler houses pose environmental concerns for ecosystem biodiversity, aquatic nutrient enrichment, and particulate formation in the atmosphere. Research was conducted sampling litter (rice hull base) in 3 tunnel-ventilated commercial bro...

2013
R. A. Ellis D. J. Jacob

National parks in the United States are protected areas wherein the natural habitat is to be conserved for future generations. Deposition of anthropogenic nitrogen (N) transported from areas of human activity (fuel combustion, agriculture) may affect these natural habitats if it exceeds an ecosystem-dependent critical load (CL). We quantify and interpret the deposition to Class I US national pa...

2015
T. Ma Y. Tu N. F. Zhang K. D. Deng Q. Y. Diao

This study aimed to investigate the effect of the ratio of non-fibrous carbohydrates to neutral detergent fibre (NFC/NDF) and undegraded dietary protein (UDP) on rumen fermentation and nitrogen metabolism in lambs. Four Dorper×thin-tailed Han crossbred lambs, averaging 62.3±1.9 kg of body weight and 10 mo of age, were randomly assigned to four dietary treatments of combinations of two levels of...

Journal: :Journal of applied physiology 1998
F Greer C McLean T E Graham

Investigations examining the ergogenic and metabolic influence of caffeine during short-term high-intensity exercise are few in number and have produced inconsistent results. This study examined the effects of caffeine on repeated bouts of high-intensity exercise in recreationally active men. Subjects (n = 9) completed four 30-s Wingate (WG) sprints with 4 min of rest between each exercise bout...

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