Results 21 to 30 of about 367,801 (311)

Chemical data assimilation estimates of continental U.S. ozone and nitrogen budgets during the Intercontinental Chemical Transport Experiment-North America [PDF]

open access: yes, 2007
Global ozone analyses, based on assimilation of stratospheric profile and ozone column measurements, and NOy predictions from the Real-time Air Quality Modeling System (RAQMS) are used to estimate the ozone and NOy budget over the continental United ...
Al-Saadi, J   +23 more
core   +2 more sources

Reintroducing Flax (Linum usitatissimum L.) to the Mediterranean Basin: The Importance of Nitrogen Fertilization

open access: yesPlants, 2021
An increasing interest has been reported regarding the reintroduction of flax in the Mediterranean region. The aim of this present study was to evaluate the effects of nitrogen (N) fertilization on the performance of flax cv. Everest, under Mediterranean
Ioanna Kakabouki   +10 more
doaj   +1 more source

Characterization of key triacylglycerol biosynthesis processes in rhodococci. [PDF]

open access: yes, 2016
Oleaginous microorganisms have considerable potential for biofuel and commodity chemical production. Under nitrogen-limitation, Rhodococcus jostii RHA1 grown on benzoate, an analog of lignin depolymerization products, accumulated triacylglycerols (TAGs ...
Amara, Sawsan   +5 more
core   +2 more sources

The influence of potassium and calcium ions on nitrogen metabolism of cucumber seedlings

open access: yesActa Societatis Botanicorum Poloniae, 2014
It was found that K+ or Ca2+ deficiency in a nitrate or ammonium medium increased the amount of accumulated total and non-protein nitrogen in some organs of cucumber seedlings, as also caused changes in accumulated potassium and calcium.
Genowefa Kubik-Dobosz
doaj   +1 more source

Apparent Accumulated Nitrogen Fertilizer Recovery in Long-Term Wheat–Maize Cropping Systems in China

open access: yesAgronomy, 2018
Recovery efficiency of nitrogen fertilizers has always been an important issue, especially for N fertilizer recommendation rate in cropping systems. Based on the equilibrium of N in the soil⁻plant system, apparent accumulated N fertilizer recovery (
Jie Liu   +4 more
doaj   +1 more source

New approaches to investigating the function of mycelial networks [PDF]

open access: yes, 2005
Fungi play a key role in ecosystem nutrient cycles by scavenging, concentrating, translocating and redistributing nitrogen. To quantify and predict fungal nitrogen redistribution, and assess the importance of the integrity of fungal networks in soil for ...
Boddy, Lynne   +6 more
core   +1 more source

Evaluation of the recovery 15n-ammonium nitrate in capim-Marandu grass pasture and corn cultivated in a crop-livestock integration. [PDF]

open access: yes, 2014
The study aimed at evaluating the total nitrogen accumulation and the nitrogen accumulated in the intercropping corn and B. brizantha evaluating the total nitrogen concentration from the fertilizer ammonium nitrate under different rates (15NH4NO3 ...
BORGHI, E.   +2 more
core   +3 more sources

Post-harvest residues of field pea/oat mixtures as a source of biological nitrogen for hybrid winter rye

open access: yesActa Agriculturae Scandinavica. Section B, Soil and Plant Science, 2020
The conducted studies show post-harvest residues of sowing/pea mixtures limit leaching of mineral nitrogen deeper into the soil profile compared to post-harvest residues of sowing peas, as they affect the yield and amount of nitrogen accumulated in ...
Anna Płaza   +2 more
doaj   +1 more source

ROSA/LSTF test on nitrogen gas behavior during reflux condensation in PWR and RELAP5 code analyses

open access: yesMechanical Engineering Journal, 2018
We conducted an experiment to clarify nitrogen gas behavior at low pressures during reflux condensation in a pressurized water reactor (PWR) with the rig of safety assessment/large scale test facility (ROSA/LSTF) at Japan Atomic Energy Agency.
Takeshi TAKEDA, Iwao OHTSU
doaj   +1 more source

Metabolome Analysis Reveals Betaine Lipids as Major Source for Triglyceride Formation, and the Accumulation of Sedoheptulose during Nitrogen-Starvation of Phaeodactylum tricornutum. [PDF]

open access: yesPLoS ONE, 2016
Oleaginous microalgae are considered as a promising resource for the production of biofuels. Especially diatoms arouse interest as biofuel producers since they are most productive in carbon fixation and very flexible to environmental changes in the ...
Jennifer Popko   +10 more
doaj   +1 more source

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