Results 51 to 60 of about 68,942 (307)
BMC Cancer, 2021 Background Cancerous cells can recycle metabolic ammonium for their growth. As this ammonium has a low nitrogen isotope ratio (15N/14N), its recycling may cause cancer tissue to have lower 15N/14N than surrounding healthy tissue. We investigated whether,
M. Straub +9 more
doaj +1 more source
15N-labed glycine synthesis [PDF]
Anais da Academia Brasileira de Ciências, 2006 This work describes a method for 15N-isotope-labeled glycine synthesis, as well as details about a recovery line for nitrogen residues. To that effect, amination of alpha-haloacids was performed, using carboxylic chloroacetic acid and labeled aqueous ammonia (15NH3).
Tavares, Claudinéia R.O. +4 more
openaire +5 more sources
A Perspective on the Applications of Triphasic Gas Storage in Electrochemical Systems
Advanced Science, EarlyView.Gas storage in microporous materials positioned locally at an electrode or electrocatalyst surface enhances electrochemical processes. Abstract Microporous materials store gases under dry conditions (e.g., hydrogen or oxygen via physisorption), but in some cases microporous materials also show triphasic (e.g., in a solid|gas|liquid system) gas storage ...
Zhongkai Li +9 more
wiley +1 more source
Delta 15N of sediment core GeoB1008-3
, 1999 Delta 15N of sediment core GeoB1008-
M Elizabeth Holmes (7885775) +1 more
core +1 more source
Advanced Science, EarlyView.Nitrosyl heme emerges as an extracellular nitrodilator that dilates arteries without crossing the cell membrane. Instead, heme‐NO mobilizes NO moieties from a preformed intracellular NO store within vascular smooth muscle, providing both functional and chemical evidence for the NANOS model, revealing a previously unrecognized mechanism of arterial ...
Taiming Liu +9 more
wiley +1 more source
CSAKD: Determining Absolute Ligand Affinities From 19F NMR Chemical Shift Anisotropy
Angewandte Chemie, EarlyView.Affinity determination is crucial in drug discovery, yet remains difficult for weakly binding fragments. We introduce chemical shift anisotropy KD$K_{\text{D}}$ (CSAKD) by 19F$^{19}{\rm F}$ NMR relaxation experiments, a titration‐free method that requires no isotopic labeling.
Simon H. Rüdisser +2 more
wiley +2 more sources
Delta 15N of sediment core GeoB1016-3
, 1999 Delta 15N of sediment core GeoB1016-
M Elizabeth Holmes (7885775) +1 more
core +1 more source
Advanced Science, EarlyView.Inspired by Nitrite reductase, a metal–organic framework overlayer is introduced to regulate the interfacial hydration microenvironment on Cu electrodes, enriching hydrated K+ species that act as efficient proton donors. This strategy enables nitrate‐to‐ammonia conversion with near‐unity selectivity at industrial‐level current densities in neutral ...
Yuyin Mao +4 more
wiley +1 more source
Chelator‐Free Radiometal Labeling Inside Engineered Affibodies
Angewandte Chemie, EarlyView.Affibodies are compact and robust three‑helix binders used in imaging and therapy. Engineering a triple‑cysteine motif into their core enables chelator‑free binding of important radiometals, like Bi(III), Pb(II), In(III), and Ga(III) with rapid uptake and exceptional stability.
Lani J. Davies +6 more
wiley +2 more sources
Scientia Agricola, 2003 Most studies dealing with the utilization of 15N labeled plant material do not present details about the labeling technique. This is especially relevant for legume species since biological nitrogen fixation difficults plant enrichment.
Edmilson José Ambrosano +9 more
doaj +1 more source