Results 31 to 40 of about 899,165 (255)

Development of portable NMR polarimeter system for polarized HD target

open access: yes, 2011
A portable NMR polarimeter system has been developed to measure the polarization of a polarized Hydrogen-Deuteride (HD) target for hadron photoproduction experiments at SPring-8.
Bassan   +37 more
core   +1 more source

Consoramides A–C, New Zwitterionic Alkaloids from the Fungus Irpex consors

open access: yesMycobiology, 2021
In our ongoing search for new secondary metabolites from fungi, a basidiomycete fungus Irpex consors was selected for mycochemical investigation, and three new zwitterionic alkaloids (1-3) and five known compounds (4-8) were isolated from the culture ...
Ji-Yul Kim   +6 more
doaj   +1 more source

Spatially Inhomogeneous Superconducting State near $H_{\rm c2}$ in UPd$_2$Al$_3$ [PDF]

open access: yes, 2017
We have performed $^{27}$Al-NMR measurements on single-crystalline UPd$_2$Al$_3$ with the field parallel to the $c$ axis to investigate the superconducting (SC) properties near the upper critical field of superconductivity $H_{\rm c2}$. The broadening of
Ishida, Kenji   +4 more
core   +2 more sources

Ruthenium Olefin Metathesis Catalysts Bearing Carbohydrate-Based N-Heterocyclic Carbenes [PDF]

open access: yes, 2010
Ru-based olefin metathesis catalysts containing carbohydrate-derived NHCs from glucose and galactose were synthesized and characterized by NMR spectroscopy. 2D-NMR spectroscopy revealed the presence of Ru−C (benzylidene) rotamers at room temperature, and
Grubbs, Robert H., Keitz, Benjamin K.
core   +2 more sources

A novel quinazolinone insulin receptor inhibitor and its synergy with an EGFR inhibitor in glucose‐driven glioblastoma

open access: yesMolecular Oncology, EarlyView.
The novel styrylquinazolinone‐based molecule W1B effectively suppresses glioblastoma by inhibiting IGF1R and EGFR. In high‐glucose microenvironments driving tumor resistance, W1B acts synergistically with the EGFR inhibitor dacomitinib. This combination safely blocks compensatory survival signaling in zebrafish xenograft models. Showcasing promising in
Patryk Rurka   +9 more
wiley   +1 more source

NMR GHZ

open access: yes, 1997
We describe the creation of a Greenberger-Horne-Zeilinger (GHZ) state of the form |000>+|111> (three maximally entangled quantum bits) using Nuclear Magnetic Resonance (NMR).
A. Ekert   +7 more
core   +1 more source

Structure calculation, refinement and validation using CcpNmr Analysis [PDF]

open access: yes, 2015
CcpNmr Analysis provides a streamlined pipeline for both NMR chemical shift assignment and structure determination of biological macromolecules. In addition, it encompasses tools to analyse the many additional experiments that make NMR such a pivotal ...
Banno   +38 more
core   +3 more sources

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

open access: yesFEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn   +4 more
wiley   +1 more source

Metabolomics Reveals Discrimination of Iranian Propolis Using LC-MS and NMR Analysis [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering
Propolis is a multifaceted substance that bees produce using nectar from flowers, buds, tree gums, and resins found in plant stems, branches, and leaves.
Masoomeh Sharbatdaran   +3 more
doaj   +1 more source

Theoretical study of NMR relaxation due to rattling phonons [PDF]

open access: yes, 2007
We calculate the NMR relaxation rate due to quadrupolar coupling of the nucleus to a local, strongly anharmonic phonon mode. As a model potential for a rattling motion we consider a square-well potential.
Abragam   +13 more
core   +4 more sources

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