Results 41 to 50 of about 88,461 (308)

PARK(ing) time–How park deficiency affects the biological clock in a Drosophila model of Parkinson's disease

FEBS Letters, EarlyView.
Drosophila park mutants serve as a model for Parkinson's disease. We used this strain to investigate the connection between oxidative stress and the circadian clock mechanism. We showed that increased oxidative stress affects the physiology of pacemaker cells, disrupting their daily structural plasticity. Lack of rhythmic signaling from pacemaker cells
Kamila Zientara, Kinga Skoczek, Elzbieta Pyza, Milena Damulewicz   +3 more
wiley   +1 more source

Nitrogen oxides analysis: INRiM activity [PDF]

, 2015
The monitoring of nitrogen oxides (NOX) is prescribed by European directives by means of chemiluminescence. This paper presents the activity carried out at INRiM for the preparation and analysis of NOX mixtures, with the aim of establishing ...
SEGA, MICHELA, Pessana, Enrica, Rolle, Francesca   +2 more
core  

Spatial variations of nitrogen trace gas emissions from tropical mountain forests in Nyungwe, Rwanda [Discussion paper] [PDF]

, 2011
Globally, tropical forest soils represent the second largest source of N2O and NO. However, there is still considerable uncertainty on the spatial variability and soil properties controlling N trace gas emission. To investigate how soil properties affect
Mbonigaba Muhinda, JJ, Landry, Cizungu Ntaboba, Kiese, R, Cizungu Ntaboba, Landry, C. Werner, Gharahi Ghehi, Nasrin, Kiese, Ralf, Van Ranst, Eric, Boeckx, Pascal, J. J. Mbonigaba Muhinda, Werner, C, Butterbach-Bahl, K, P. Boeckx, N. Gharahi Ghehi, L. Cizungu Ntaboba, K. Butterbach-Bahl, Mbonigaba Muhinda, Jean Jacques, Butterbach-Bahl, Klaus, R. Kiese, Werner, Christian, E. Van Ranst   +20 more
core   +1 more source

A Mathematical Modelling of Nitrogen Oxide Formation in a cng Spark Ignition Engine

Communications, 1999
Nitrogen oxides occupy aspecific position among gaseous harmful emissions produced by combustion engines. This position may externally appear as a coherence between energetic and ecological properties of the engine.
Vladimir Hlavna, Daniela Zvarkova
doaj   +1 more source

Mechanisms for sonochemical oxidation of nitrogen

Physical Chemistry Chemical Physics, 2022
N2O, and mixtures of N2 and O2, dissolved in water—both in the presence and absence of added noble gases—have been subjected to ultrasonication with quantification of nitrite and nitrate products.
Thomas Qureishy, Sverre Løyland, Susanne J. Jørgensen, Eline M. Færgestad, Truls Norby, Einar Uggerud   +5 more
openaire   +3 more sources

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

FEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

Overview on TROCCINOX and results form the 2004 mission [PDF]

, 2004
The EU project TROCCINOX (Tropical Convection, Cirrus, and Nitrogen Oxides Experiment), http://www.pa.op.dlr.de/troccinox/, is being performed in 2002-2005 in cooperation with the Brazilian pro-ject TROCCIBRAS and in coordination with the EU-project ...
Schumann, Ulrich
core  

Association between air pollution and bone mineral density: a Mendelian randomization study

Archives of Medical Science
Introduction The association of air pollution with bone mineral density (BMD) has attracted increasing attention. However, establishing a causal relationship remains uncertain. Methods We conducted a Mendelian randomization (MR) study employing PM 2.5 ,
Rui Jiang, Qi Qu, Zhiyu Wang, Feng Luo, Shuanglin Mou   +4 more
doaj   +1 more source

Detection of Heat-Stressed Furnace Wall’s Areas Based on Results of Numerical Simulations of Thermal Flows

MATEC Web of Conferences, 2016
In this paper, a numerical study of the formation of nitrogen oxides in the combustion chamber based on the model created by Mitchellom and Terbellom.
Popov V.V, Taylasheva T.S., Lebedev V.M.
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source