Results 31 to 40 of about 548,863 (305)

Summertime distribution and relations of reactive odd nitrogen species and NOyin the troposphere over Canada [PDF]

open access: yes, 1994
We report here large-scale features of the distribution of NOx, HNO3, PAN, particle (NO3) (-) and NOy in the troposphere from 0.15 to 6 km altitude over central Canada.
Anderson, B   +17 more
core   +1 more source

Biological aspects of reactive nitrogen species

open access: yesBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1999
Nitric oxide (NO) plays an important role as a cell-signalling molecule, anti-infective agent and, as most recently recognised, an antioxidant. The metabolic fate of NO gives rise to a further series of compounds, collectively known as the reactive nitrogen species (RNS), which possess their own unique characteristics.
Patel, Rakesh P.   +6 more
openaire   +2 more sources

Effects of Antimony on Reactive Oxygen and Nitrogen Species (ROS and RNS) and Antioxidant Mechanisms in Tomato Plants

open access: yesFrontiers in Plant Science, 2020
This research studies the effects that Sb toxicity (0.0, 0.5, and 1.0 mM) has on the growth, reactive oxygen and nitrogen species, and antioxidant systems in tomato plants.
Francisco L. Espinosa-Vellarino   +4 more
doaj   +1 more source

Dangers of hyperoxia

open access: yesCritical Care, 2021
Oxygen (O2) toxicity remains a concern, particularly to the lung. This is mainly related to excessive production of reactive oxygen species (ROS). Supplemental O 2 , i.e. inspiratory O2 concentrations (FIO2) > 0.21 may cause hyperoxaemia (i.e.
Mervyn Singer   +7 more
doaj   +1 more source

Interplay between oxidant species and energy metabolism

open access: yesRedox Biology, 2016
It has long been recognized that energy metabolism is linked to the production of reactive oxygen species (ROS) and critical enzymes allied to metabolic pathways can be affected by redox reactions. This interplay between energy metabolism and ROS becomes
Celia Quijano   +3 more
doaj   +1 more source

Ozone and alkyl nitrate formation from the Deepwater Horizon oil spill atmospheric emissions [PDF]

open access: yes, 2012
Ozone (O3), alkyl nitrates (RONO2), and other photochemical products were formed in the atmosphere downwind from the Deepwater Horizon (DWH) oil spill by photochemical reactions of evaporating hydrocarbons with NOx (=NO+NO2) emissions from spill response
Aikin, KC   +13 more
core   +1 more source

Santa Giusta Lagoon (Sardinia): phytoplankton and nutrients before and after waste water diversion [PDF]

open access: yes, 2001
The purpose of this paper was to assess the effect of the diversion of waste water on the trophic status of the Stagno di Santa Giusta, a hypertrophic lagoon on the centre-western coast of Sardinia.
Fiocca, Fatima   +3 more
core   +2 more sources

Macrophages, reactive nitrogen species, and lung injury [PDF]

open access: yesAnnals of the New York Academy of Sciences, 2010
Evidence has accumulated over the past several years demonstrating that lung injury following inhalation of irritants like ozone is due, not only to direct effects of the chemical, but also indirectly to the actions of inflammatory mediators released by infiltrating macrophages.
Debra L, Laskin   +5 more
openaire   +2 more sources

Detection of reactive oxygen and nitrogen species by electron paramagnetic resonance (EPR) technique [PDF]

open access: yes, 2017
During the last decade there has been growing interest in physical-chemical oxidation processes and the behavior of free radicals in living systems. Radicals are known as intermediate species in a variety of biochemical reactions.
Gurer-Orhan, H., Saso, L., Suzen, S.
core   +2 more sources

Medical Gas Plasma Jet Technology Targets Murine Melanoma in an Immunogenic Fashion

open access: yesAdvanced Science, 2020
Medical technologies from physics are imperative in the diagnosis and therapy of many types of diseases. In 2013, a novel cold physical plasma treatment concept was accredited for clinical therapy.
Sander Bekeschus   +5 more
doaj   +1 more source

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