Results 31 to 40 of about 15,630 (267)
Sirtuin Oxidative Post-translational Modifications
Frontiers in Physiology, 2021 Increased sirtuin deacylase activity is correlated with increased lifespan and healthspan in eukaryotes. Conversely, decreased sirtuin deacylase activity is correlated with increased susceptibility to aging-related diseases.
Kelsey S. Kalous +2 more
doaj +1 more source
Comment on "Atmospheric ionization by high-fluence, hard spectrum solar proton events and their probable appearance in the ice core archive" by A.L. Melott et al [PDF]
, 2016 Melott et al. [2016] suggest that individual solar proton events (SPEs) are detectable as nitrate ion spikes in ice cores. They use the high fluence, high energy (hard spectrum) SPE of 23 February 1956 to calculate an enhancement of HNO3 from the surface to 46 km that is equivalent to a ~120 ng cm-2 nitrate ion spike observed in the GISP2H ice core ...
arxiv +1 more source
Low time resolution analysis of polar ice cores cannot detect impulsive nitrate events [PDF]
Journal of Geophysical Research: Space Physics 119, 9430-9440
(2014), 2015 Ice cores are archives of climate change and possibly large solar proton events (SPEs). Wolff et al. (2012) used a single event, a nitrate peak in the GISP2-H core, which McCracken et al. (2001a) time associated with the poorly quantified 1859 Carrington event, to discredit SPE-produced, impulsive nitrate deposition in polar ice.
arxiv +1 more source
Understanding links between water-quality variables and nitrate concentration in freshwater streams using high-frequency sensor data [PDF]
, 2021 Real time monitoring using in situ sensors is becoming a common approach for measuring water quality within watersheds. High frequency measurements produce big data sets that present opportunities to conduct new analyses for improved understanding of water quality dynamics and more effective management of rivers and streams.
arxiv +1 more source
Frontiers in Chemistry, 2016 Nitration of tyrosine and other aromatic amino acid residues in proteins occurs in the setting of inflammatory, neurodegenerative and cardiovascular diseases – importantly, this modification has been implicated in the pathogenesis of diverse diseases and
Tal eNuriel +7 more
doaj +1 more source
Does thiosemicarbazide lead nitrate (TSLN) crystal exist? [PDF]
, 2016 The authors of a recent paper (Optik 125 (2014) 2022-2025) claim to have grown a so called thiosemicarbazide lead nitrate (TSLN) crystal by the slow evaporation method. In this comment we prove that TSLN is actually thiosemicarbazide.
arxiv +1 more source
FEBS Open Bio, EarlyView.The thermophilic acetogenic model organism Moorella thermoacetica can utilize lactate as substrate. The formation of lactate by reduction of pyruvate is energetically favorable, but the reverse reaction, the oxidation of lactate to pyruvate with NAD+ as electron acceptor is challenging.
Florian P. Rosenbaum, Volker Müller
wiley +1 more source
Antioxidants, 2018 Diabetes and hyperglycemia are associated with increased retinal oxidative and nitrative stress and vascular cell death. Paradoxically, high glucose stimulates expression of survival and angiogenic growth factors.
Sally L. Elshaer +2 more
doaj +1 more source
Huge Seebeck coefficients in non-aqueous electrolytes [PDF]
, 2011 The Seeebeck coefficients of the non-aqueous electrolytes tetrabutylammonium nitrate, tetraoctylphosphonium bromide and tetradodecylammonium nitrate in 1-octanol, 1-dodecanol and ethylene-glycol are measured in a temperature range from T=30 to T=45 C.
arxiv +1 more source
FEBS Open Bio, EarlyView.We investigated a potential protective effect of acacetin, a naturally occurring flavonoid, against methylglyoxal (MGO)‐induced endothelial dysfunction in human umbilical vein endothelial cells and its mechanism of action. Acacetin can could inhibit MGO‐induced intracellular calcium ion influx, enhance the expression levels of phosphorylated ...
Zhen Zhang +7 more
wiley +1 more source