Results 81 to 90 of about 857,936 (311)

Regression-based machine learning models for nitrate and chloride prediction in surface water in a small agricultural sand plain sub-watershed in southwestern Ontario, Canada

Frontiers in Environmental Science
Machine learning (ML) models have proven to be an efficient technique for better understanding and quantification of surface water quality, especially in agricultural watersheds where considerable anthropogenic activities occur.
Ahmed Elsayed, Ahmed Elsayed, Jana Levison, Andrew Binns, Marie Larocque, Pradeep Goel   +5 more
doaj   +1 more source

Nitrate leaching in grazed grasslands of different composition and age [PDF]

, 2002
In a field experiment at Research Centre Foulum a suction cup technique was used to investigate nitrate leaching from grassland depending on composition (grass-clover or perennial ryegrass), management (grazing or cutting) and age of the swards.
Eriksen, J., Vinther, F.P.
core  

Nitric oxide production by the human intestinal microbiota by dissimilatory nitrate reduction to ammonium [PDF]

, 2009
The free radical nitric oxide (NO) is an important signaling molecule in the gastrointestinal tract. Besides eukaryotic cells, gut microorganisms are also capable of producing NO. However, the exact mechanism of NO production by the gut microorganisms is
Vermeiren, Joan, Van de Wiele, Tom, Verstraete, Willy, Boeckx, Pascal, Boon, Nico   +4 more
core   +2 more sources

PARP inhibition and pharmacological ascorbate demonstrate synergy in castration‐resistant prostate cancer

Molecular Oncology, EarlyView.
Pharmacologic ascorbate (vitamin C) increases ROS, disrupts cellular metabolism, and induces DNA damage in CRPC cells. These effects sensitize tumors to PARP inhibition, producing synergistic growth suppression with olaparib in vitro and significantly delayed tumor progression in vivo. Pyruvate rescue confirms ROS‐dependent activity.
Nicolas Gordon, Peter T. Gallagher, Orly I. Richter, Neermala Poudel Neupane, Amy C. Mandigo, Jennifer J. McCann, Emanuela Dylgjeri, Irina Vasilevskaya, Christopher McNair, Channing J. Paller, Wm. Kevin Kelly, Karen E. Knudsen, Matthew J. Schiewer, Ayesha A. Shafi   +13 more
wiley   +1 more source

Homogenous catalysis of peroxynitrite conversion to nitrate by diaryl selenide: a theoretical investigation of the reaction mechanism

Frontiers in Chemistry
Quenching peroxynitrite (a reactive oxidant species) is a vital process in biological systems and environmental chemistry as it maintains redox balance and mitigates damaging effects in living cells and the environment.
Yuan Xue, Yuan Xue, Carrie Salmon, Valentin Gogonea, Valentin Gogonea, Valentin Gogonea   +5 more
doaj   +1 more source

2,4,6-Trimethylpyridinium nitrate [PDF]

Acta Crystallographica Section E Structure Reports Online, 2010
في مركب العنوان، C(8)H(12)N (+) ·NO(3) (-)، يقع الكاتيون على مستوى مرآة وتقع ذرة N و C واحدة على محور مزدوج. في البلورة، ترتبط الأنيونات والكاتيونات بتفاعلات N - HO على طول المحور b ويحدث أيضًا اتصال قصير n - o OP [3.2899 (5) Å].
Shahzad Sharif, Mehmet Akkurt, Islam Ullah Khan, Abdur Rauf, Irfana Mariam   +4 more
openaire   +4 more sources

Wetland restoration and nitrate reduction: the example of the periurban wetland of Vitoria-Gasteiz (Basque Country, North Spain) [PDF]

, 2003
Changes in land use and agricultural intensification caused wetlands on the quaternary aquifer of Vitoria-Gasteiz (Basque Country) to disappear some years ago and nitrate concentration in groundwaters increased very quickly.
C. García-Linares, C. García-Linares, I. Antiguedad, J. M. Sánchez-Pérez, M. Martínez-Santos, V. Martínez-Bilbao   +5 more
core   +3 more sources

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

Molecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff, Manuela Moritz, Dennis Eggert, Anna Worthmann, Joerg Heeren, Henrike Zech, Till S. Clauditz, Waldemar Wilczak, Hartmut Schlüter, Christian S. Betz, Arne Böttcher, Jan Hahn   +11 more
wiley   +1 more source

Five-Day Supplementation with an Isotonic Beetroot Juice Drink Improves Sprint Interval Exercise and Muscle Oxygenation in Physically Active Individuals: A Randomized Crossover Trial

Beverages
This study investigated whether the addition of nitrate (from beetroot) to an isotonic drink provided over 5 days would affect sprint interval exercise (SIE) performance and muscle oxygenation. Twenty (seven female) physically active participants (mean ±
Tak Hiong Wong, Delicia Shu Qin Ooi, Stephen F. Burns   +2 more
doaj   +1 more source

Nitrate-Induced CLE Peptide Systemically Inhibits Nodulation in Medicago truncatula

Plants, 2020
Legume plants form nitrogen-fixing nodules in symbiosis with soil bacteria rhizobia. The number of symbiotic nodules is controlled at the whole-plant level with autoregulation of nodulation (AON), which includes a shoot-acting CLV1-like receptor kinase ...
Maria Lebedeva, Mahboobeh Azarakhsh, Yaroslavna Yashenkova, Lyudmila Lutova   +3 more
doaj   +1 more source