Results 11 to 20 of about 1,342 (262)
An ion trap-ion mobility-time of flight mass spectrometer with three ion sources for ion/ion reactions [PDF]
Journal of the American Society for Mass Spectrometry, 2009 This instrument combines the capabilities of ion/ion reactions with ion mobility (IM) and time-of-flight (TOF) measurements for conformation studies and top-down analysis of large biomolecules. Ubiquitin ions from either of two electrospray ionization (ESI) sources are stored in a three dimensional (3D) ion trap (IT) and reacted with negative ions from
Zhao, Qin +6 more
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Hydrated Ions: From Individual Ions to Ion Pairs to Ion Clusters
The Journal of Physical Chemistry B, 2015 The structure of hydrated ions plays a central role in chemical and biological sciences. In the present paper, five ions, namely, Na(+), K(+), Mg(2+), Ca(2+) and Cl(-), are examined using molecular dynamics simulations. In addition to hydrated individual ions and ion pairs identified previously, hydrated ion clusters containing 3, 4, 5, or more ions ...
Houyang, Chen, Eli, Ruckenstein
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Journal of the American Society for Mass Spectrometry, 2006 By Yates, Bouma, and Radom's definition, distonic radical ions are those formally arising by ionization of diradicals or zwitterionic molecules (including ylides). These ions differ, therefore, from conventional radical ions by displaying the charge site and unpaired electron site (spin) localized mandatorily on separate atoms or group of atoms; that ...
Tomazela, Daniela Maria +4 more
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Anales (Asociación Física Argentina), 2021 Se describe el desarrollo de un interferómetro capaz de medir vibraciones sin contacto. Los resultados obtenidos demuestran su capacidad para medir desplazamientos micrómetricos y/o nanómetricos, sin la necesidad de estabilizar el láser. Si bien existen
Lautaro Ezequiel Filgueira +1 more
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Ion channels and ion selectivity [PDF]
Essays in Biochemistry, 2017 Specific macromolecular transport systems, ion channels and pumps, provide the pathways to facilitate and control the passage of ions across the lipid membrane. Ion channels provide energetically favourable passage for ions to diffuse rapidly and passively according to their electrochemical potential.
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REMOCIÓN DE IONES COBRE Y NIQUEL CON CÁSCARA DE MANÍ
Holos, 2018 En el presente trabajo se estudió la remoción de iones cobre y níquel utilizando cáscaras de maní mediante pruebas en lote en sistemas monocomponente y bicomponente (pruebas de remoción simultánea). En este estudio se evaluó el efecto de las variables pH,
Patricia Tapia +3 more
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Dynamic ion-ion and water-ion interactions in ion channels
Biophysical Journal, 1992 The dynamic interactions among ions and water molecules in ion channels are treated based on an assumption that ions at binding sites can be knocked off by both transient entering ions and local water molecules. The theory, when applied to a single-site model K+ channel, provides solutions for super- and subsaturations, flux-ratio exponent (n') greater
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Osmolytes changes for resistance in two cultivars of cotton (Gossypium hirsutum L.) Plants. [PDF]
فیزیولوژی محیطی گیاهی, 2007 This study aims at the evaluation of physiological aspects of two cotton (Gossypium hirsutum L) cultivars, Siokra and Sahel to salin soil salinity [EC=12.3] collected from natural environment of Golestan province.
Mohammad Ali Rezaei
doaj
Remoción de partículas adsorbentes de iones cobre por flotación Jet
Revista de Metalurgia, 2009 Los resultados que se presentan en este artículo corresponden a los estudios realizados para la remoción de iones cobre desde efluentes sintéticos, utilizando la técnica de flotación por partículas adsorbentes (FPA) en una celda de flotación Jet (tipo ...
M. Santander +4 more
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Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Patients with chronic kidney disease undergoing hemodialysis commonly experience reduced physical function, fatigue, poor sleep quality, and impaired health‐related quality of life. Intradialytic exercise has been proposed as a non‐pharmacological strategy to improve these outcomes.
Klebson da Silva Almeida +6 more
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