نتایج جستجو برای: enrichment method
تعداد نتایج: 1666013 فیلتر نتایج به سال:
Selective enrichment of glycopeptides prior to the mass spectrometry (MS) analysis is essential due to ion suppression effect during ionization caused by the co-presence of non-glycosylated peptides. Among the enrichment approaches, hydrophilic interaction liquid chromatography (HILIC) based on magnetic separation has become a popular method in recent years. As the conventional synthesis proced...
We demonstrate the feasibility of quantifying the abundance of 2H in plasma by nuclear magnetic resonance (NMR) spectroscopy. After adding internal standard (tert-butyl-d9 alcohol) to deproteinized plasma samples containing 2H2O, we determined the ratio of NMR peak areas for 2H2O and tert-butyl-d9 alcohol. This peak-area ratio was directly proportional to the exogenous 2H enrichment of plasma (...
This study aimed at using eXtended finite element method (XFEM) to characterize crack growth through bone's intra-cortical pores. Two techniques were compared using Abaqus: (1) void material properties were assigned to pores; (2) multiple enrichment regions with independent crack-growth possibilities were employed. Both were applied to 2D models of transverse images of mouse bone with differing...
Abstract. Tropospheric helium variations are tightly linked to CO2 due the co-emission of He and from natural-gas burning. Recently, Birner et al. (2022a) showed that global consumption natural gas has measurably increased content atmosphere. Like CO2, is also predicted exhibit complex spatial temporal variability on shorter timescales, but measurements these short-term lacking. Here, we presen...
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