Concept

Fixation biologique du diazote

Publications associées (148)

Common reef-building coral in the Northern Red Sea resistant to elevated temperature and acidification

Anders Meibom, Stéphane Laurent Escrig, Thomas Krüger, Maoz Fine, Julia Marie Jeanne Yvonne Bodin, Maria-Evangelia Giovani

Coral reefs are currently experiencing substantial ecological impoverishment as a result of anthropogenic stressors, and the majority of reefs are facing immediate risk. Increasing ocean surface temperatures induce frequent coral mass bleaching events—the ...

Royal Soc2017

AlN grown on Si(111) by ammonia-molecular beam epitaxy in the 900-1200 degrees C temperature range

Nicolas Grandjean, Denis Martin, Sebastian Pascal Tamariz Kaufmann

We present a comprehensive study of AlN growth on Si(111) substrate by gas source molecular beam epitaxy with ammonia as nitrogen precursor in the high temperature range. We first demonstrate that the observation of the silicon 7 x 7 surface reconstruction ...

Elsevier2017

Nickel-Catalyzed Reductive Transamidation of Secondary Amides with Nitroarenes

Xile Hu, Chi Wai Cheung, Marten Leendert Ploeger

Transmidation is an attractive method for amide synthesis. However, transamidation of secondary amides is challenging. Here, we describe a reductive transamidation method that employs readily available nitro(hetero)arenes as the nitrogen sources, zinc or m ...

American Chemical Society2017

First principle calibration of water vapor Raman lidars

Valentin Simeonov

A new method for calibration of water vapor Raman lidars based on first principles is proposed. The calibration constant of a Raman lidar is derived from a set of water vapor and nitrogen Raman backscatter signals measured with the lidar receiver in a cell ...

Spie-Int Soc Optical Engineering2017

Polar Hinges as Functionalized Conformational Constraints in (Bi) cyclic Peptides

Christian Heinis, Sangram Shivdas Kale

Two polar hinges for cyclization of peptides have been developed, leading to bicyclic peptides and cyclized peptides with improved solubility and biological activity. Increasingly, we note that a good aqueous solubility of peptides is an absolute prerequis ...

Wiley-Blackwell2017

Phenotypic heterogeneity driven by nutrient limitation promotes growth in fluctuating environments

Anders Meibom, Stéphane Laurent Escrig, Martin Ackermann

Most microorganisms live in environments where nutrients are limited and fluctuate over time. Cells respond to nutrient fluctuations by sensing and adapting their physiological state. Recent studies suggest phenotypic heterogeneity(1) in isogenic populatio ...

Nature Publishing Group2016

Biosurfactant production through Bacillus sp MTCC 5877 and its multifarious applications in food industry

In this study Bacillus sp. MTCC5877 was explored for the production of biosurfactant (BSs) and various carbon sources 1% (w/v), 0.5% (w/v) nitrogen sources were tested at different pH, and temperature. Yield was measured in terms of Emulsification index (E ...

Elsevier2016

Biosurfactant production through bacillus sp. MTCC 5877 and its multifarious applications in food industry

Edgard Gnansounou

Elsevier2016

Structural and mechanical properties of Nb-1 (-) xTixN thin films deposited by rf magnetron sputtering

Alireza Karimi, Daniela Dumitriu La Grange

Nb1-xTixNy thin films with different nitrogen contents (0.5 < y < 1.2) and Nb/Ti ratios (0

Elsevier2016

Past, present, and future atmospheric nitrogen deposition

Athanasios Nenes

Reactive nitrogen emissions into the atmosphere are increasing as a result of human activities, affecting nitrogen deposition to the surface and impacting the productivity of terrestrial and marine ecosystems. An atmospheric chemistry-transport model [Trac ...

American Meteorological Society2016

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