Results 21 to 30 of about 1,421,795 (306)

Psi Performance as a Function of Demographic and Personality Factors in Smartphone-Based Tests: Using a “SEARCH” Approach

open access: yesJournal of Anomalous Experience and Cognition, 2021
Objective: We set out to gain a better understanding of human psychic or “psi” functioning by using a smartphone-based app to gather data from thousands of participants.
Julia Mossbridge, Dean Radin
doaj   +1 more source

An ion trap-ion mobility-time of flight mass spectrometer with three ion sources for ion/ion reactions [PDF]

open access: yesJournal 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
openaire   +2 more sources

Destabilized carbenium ions: [alpha]-carbamoyl-[alpha],[alpha]-dimethylmethyl cations [PDF]

open access: yes, 1990
Wolf R, Grützmacher H-F. Destabilized carbenium ions: [alpha]-carbamoyl-[alpha],[alpha]-dimethylmethyl cations. Journal of physical organic chemistry.
Grützmacher, Hans-Friedrich   +1 more
core   +1 more source

Distribution of Oil, Water, and Ions Near the Neutral Calcite Surface in the Presence of Low and High Salinity Water: Molecular Dynamics Simulation [PDF]

open access: yesJournal of Petroleum Science and Technology, 2023
Low salinity water flooding has a significant impact on the recovery of carbonate reservoirs. In this paper, the molecular dynamics simulation was carried out to investigate the distribution of ions (Na+, Cl-, Ca2+, Mg2+, and SO42-), water, and oil ...
Saeed Abdolahi   +2 more
doaj   +1 more source

Hydrated Ions: From Individual Ions to Ion Pairs to Ion Clusters

open access: yesThe 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
openaire   +2 more sources

Redox Potentials of Uranyl Ions in Macrocyclic Complexes: Quantifying the Role of Counter-Ions

open access: yes, 2023
Several uranyl ions strapped with Schiff-base ligands in the presence of redox-innocent metal ions are synthesized, and their reduction potentials are recently estimated.
Mahesh Sundararajan   +1 more
core   +1 more source

Gas phase reactions of protonated 1,3-diphenylpropyne and some isomeric [C15H13]+ ions [PDF]

open access: yes, 1985
Bäther W, Kuck D, Grützmacher H-F. Gas phase reactions of protonated 1,3-diphenylpropyne and some isomeric [C15H13]+ ions. Organic Mass Spectrometry. 1985;20(9):572-577.Metastable (3-phenyl-2-propynyl)benzenium ions, generated by electron impact induced ...
Bäther, Wolfgang   +5 more
core   +1 more source

Distonoid ions [PDF]

open access: yesJournal 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
openaire   +2 more sources

Mass spectrometry of alkylbenzenes and related compounds. Part II. Gas phase ion chemistry of protonated alkylbenzenes (alkylbenzenium ions) [PDF]

open access: yes, 1990
Kuck D. Mass spectrometry of alkylbenzenes and related compounds. Part II. Gas phase ion chemistry of protonated alkylbenzenes (alkylbenzenium ions). Mass Spectrometry Reviews.
Kuck, Dietmar
core   +1 more source

Ion channels and ion selectivity [PDF]

open access: yesEssays 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.
openaire   +2 more sources

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