Comparison of the positive and negative modes of corona discharge ion source for direct determination of aspirin in urine by ion mobility spectrometrydoi:10.1016/j.ijms.2021.116699Younes ValadbeigiVahideh IlbeigiAzizulhaq AfgarMajid SoleimaniInternational Journal of Mass Spectrometry...
These include the mass spectra as well as the metastable ion MI and collisional activation CA spectra of [M + H]+ and [M ? H]? ions. The extent of the common neutral losses as NH3, H2O and CO2H2 in the positive ion spectra is governed by the nature of the side chain. The ...
This work shows how to design and build positive/positive (+/+) and negative/negative (/) symmetric cells with electrodes operating in the same potential ranges (vs Li/Li+) as those in a full Li-ion cell. When this is achieved, better understanding of full cell degradation can be obtaine...
(EECC5500:).thNe.Dco.:nncoent dtreatteiromn ionfeCdad2+uethtoataisvery The mutation E837A eliminates effects from both positive and negative allosteric modula- tors. Binding sites for positive allosteric modulators (PAMs) and negative allosteric modulators (NAMs), respectively, have been ...
et al. Simultaneous determination of histamine and prostaglandin D2 using an LC-ESI-MS/MS method with positive/negative ion-switching ionization modes: application to the study of anti-allergic flavonoids on the degranulation of KU812 cells. Anal. Bioanal. Chem. 401, 1385–1392 (2011). Article...
The utility model discloses a positive ion and negative ion generator, comprising a shell, a power processing circuit, a booster oscillation circuit, a booster transformer, a high voltage rectifier circuit, a positive ion discharge electrode and an negative ion discharge electrode, wherein, the cir...
Simultaneous detection of two classes of dyes possessing different chemical properties is difficult. In this study, through negative/positive ion switching mode, simultaneous determination of four typical acid orange dyes and three typical basic orange dyes was achieved by a single high-performance liquid...
(0.1% formic acid in ultrapure water) with eluting buffer mobile phase B. The electrospray voltage for ionization on the mass spectrometer was set at 2.3 kV. Positive ion mode was used for acquisition at a resolution of 120,000, with a full MS spectrum (m/z = 350-1800) using ...
Self-talk can improve cognitive performance, but the underlying mechanism of such improvement has not been investigated. This study aimed to elucidate the effects of self-talks on functional connectivity associated with cognitive performance. We used the
Versatile electrode for rechargeable lithium ion and lithium batteries comprises a high-temperature polymorph of the oxide LiT2-xCrxO4 of ramsdellite structure. The presence of Ti(IV) and Cr(III) changing to Ti(III) and Cr(IV) permits use as the negative and positive electrode in the batteri...