Results 141 to 150 of about 217,951 (354)
2.5-12 micron spectrophotometry and imaging of the CfA sample [PDF]
arXiv, 1998 We present low resolution spectrophotometric and imaging ISO observations of a sample of 54 AGN's over the 2.5-11 micron range. The observations generally support unification schemes and set new constraints on models of the molecular torus.
arxiv
The Use of Spectrophotometry UV-Vis for the Study of Porphyrins
, 2012 The porphyrins (Fig. 1) are an important class of naturally occurring macrocyclic compounds found in biological compounds that play a very important role in the metabolism of living organisms.
R. Giovannetti
semanticscholar +1 more source
Lactylation‐Driven HECTD2 Limits the Response of Hepatocellular Carcinoma to Lenvatinib
Advanced Science, EarlyView.HECTD2 serves as an E3 ubiquitin ligase of KEAP1 to facilitate the antioxidative response and contributes to lenvatinib resistance in hepatocellular carcinoma. Lactylation of histone 3 on lysine residue 18 drives HECTD2 transcription. Targeting HECTD2 using PLGA‐PEG‐based nanoparticles offers novel strategies to overcome lenvatinib resistance in ...
Runyu Dong +12 more
wiley +1 more source
Electrochemically activated polyaniline based ambipolar organic electrochemical transistor
Electrochemical Science Advances, Volume 2, Issue 6, December 2022., 2022 Abstract The organic electrochemical transistors (OECTs) are largely applied as bio‐ and ion‐sensor devices due to their performance in an aqueous environment with electrochemical doping/dedoping (reversible redox reactions) of the semiconducting layer through ion injection and also low (around 1 V) operation potentials.
Hugo José Nogueira Pedroza Dias Mello +2 more
wiley +1 more source
Química Nova, 2008 This paper describes a simple and rapid spectrophotometric method for quantitative determination of sildenafil citrate based on its reaction with p-chloranil accelerated by hydrogen peroxide, producing a stable purple compound (λmax= 535 nm). In the
Patrícia Los Weinert +2 more
doaj +1 more source
Spectrophotometry of Michigan-Tololo quasars [PDF]
Emission-line quasar characteristics are confirmed for 80% of the objects observed, including at least four new quasars with spectral features indicative of supernova-like outflow.
Lewis, D. W. +2 more
core +1 more source
Integral-field spectroscopy of the quadruple QSO HE 0435-1223: Evidence for microlensing
, 2003 We present the first spatially resolved spectroscopic observations of the recently discovered quadruple QSO and gravitational lens HE0435-1223. Using the Potsdam Multi-Aperture Spectrophotometer (PMAS), we show that all four QSO components have very ...
A. Helms +21 more
core +1 more source
Advanced Science, EarlyView.A single dual‐emission two‐photon fluorescent probe is designed for simultaneously tracking tyrosinase (TYR) and adenosine triphosphate (ATP). With the help of this probe, the intricate correlation and regulatory mechanism between TYR and ATP during oxidative stress is uncovered.
Hong Huang +12 more
wiley +1 more source
Dual‐gate ion‐sensitive field‐effect transistors: A review
Electrochemical Science Advances, Volume 2, Issue 6, December 2022., 2022 Abstract Ion‐sensitive field‐effect transistors (ISFETs) are electrochemical sensors that work on the principle of metal‐oxide field‐effect transistors. Dual‐gate ion‐sensitive field‐effect transistors (DGISFETs) are an advanced version of ISFETs with an additional gate dielectric, resulting in sensitivity enhancement on account of the coupling of the
Deepa Bhatt, Siddhartha Panda
wiley +1 more source
HST Stellar Standards with 1% Accuracy in Absolute Flux [PDF]
arXiv, 2006 Free of any atmospheric contamination, HST provides the best available spectrophotometry from the far-UV to the near-IR for stars as faint as V~16. The HST CALSPEC standard star network is based on 3 standard candles: the hot, pure hydrogen white dwarf (WD) stars G191B2B, GD153, and GD71, which have Hubeny NLTE model flux calculations that require the ...
arxiv