Zobrazeno 1 - 10
of 601
pro vyhledávání: '"Warren, Warren S."'
Autor:
Kastenholz, Heidi V., Topper, Michael I., Warren, Warren S., Fischer, Martin C., Grass, David
Carbon-based black pigments, a widely used class of pigments, are difficult to differentiate with the noninvasive techniques currently used in cultural heritage science. We utilize pump-probe microscopy to distinguish four common carbon-based black p
Externí odkaz:
http://arxiv.org/abs/2403.08897
Autor:
Lindale, Jacob R., Smith, Loren L., Mammen, Mathew W., Eriksson, Shannon L., Everhart, Lucas, Warren, Warren S.
The inherently low signal-to-noise ratio of NMR and MRI is now being addressed by hyperpolarization methods. For example, iridium-based catalysts that reversibly bind both parahydrogen and ligands in solution can hyperpolarize protons (SABRE) or hete
Externí odkaz:
http://arxiv.org/abs/2311.01417
Cadmium sulfide (CdS) pigments have degraded in several well-known paintings, but the mechanisms of degradation have yet to be fully understood. Traditional non-destructive analysis techniques primarily focus on macroscopic degradation, whereas micro
Externí odkaz:
http://arxiv.org/abs/2310.15126
Autor:
Grass, David, Beasley, Georgia M., Fischer, Martin C., Selim, M. Angelica, Zhou, Yue, Warren, Warren S.
Pump-probe microscopy of melanin in tumors has been proposed to improve diagnosis of malignant melanoma, based on the hypothesis that aggressive cancers disaggregate melanin structure. However, measured signals of melanin are complex superpositions o
Externí odkaz:
http://arxiv.org/abs/2207.01491
The theoretical description of the interplay between coherent evolution and chemical exchange, originally developed for magnetic resonance and later applied to other spectroscopic regimes, was derived under incorrect statistical assumptions. Correcti
Externí odkaz:
http://arxiv.org/abs/2205.05146
Signal Amplification By Reversible Exchange (SABRE) and the heteronuclear variant, X-SABRE, increase the sensitivity of magnetic resonance techniques using order derived from reversible binding of para-hydrogen. One current limitations of SABRE is su
Externí odkaz:
http://arxiv.org/abs/2204.11958
SABRE (Signal Amplification by Reversible Exchange) methods provide a simple, fast, and cost-effective method to hyperpolarize a wide variety of molecules in solution, and have been demonstrated with protons and, more recently, with heteronuclei (X-S
Externí odkaz:
http://arxiv.org/abs/2202.05712
Hyperpolarization methods in magnetic resonance overcome sensitivity limitations, especially for low-{\gamma} nuclei such as 13C and 15N. Signal Amplification By Reversible Exchange (SABRE) and extended SABRE (X-SABRE) are efficient and low-cost meth
Externí odkaz:
http://arxiv.org/abs/2107.13040
Signal Amplification By Reversible Exchange (SABRE) creates hyperpolarization (large spin magnetization) using a transition metal catalyst and parahydrogen, addressing the sensitivity limitations of magnetic resonance. SABRE and its heteronuclear var
Externí odkaz:
http://arxiv.org/abs/2107.04687