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Record W2077594576 · doi:10.1002/cjoc.200890159

All‐atom Molecular Dynamic Simulations Combined with the Chemical Shifts Study on the Weak Interactions of Ethanol‐water System

2008· article· en· W2077594576 on OpenAlex
Rong Zhang, W.Z. Wu

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueChinese Journal of Chemistry · 2008
Typearticle
Languageen
FieldPhysics and Astronomy
TopicSpectroscopy and Quantum Chemical Studies
Canadian institutionsTellabs (Canada)
Fundersnot available
KeywordsChemistryHydrogen bondMolecular dynamicsChemical shiftEnthalpyAqueous solutionHydrogenHydrogen atomAtom (system on chip)ThermodynamicsComputational chemistryMoleculePhysical chemistryOrganic chemistryGroup (periodic table)

Abstract

fetched live from OpenAlex

Abstract All‐atom molecular dynamics (MD) simulation combined with chemical shifts was performed to investigate the interactions over the entire concentration range of the ethanol (EtOH)‐water system. The results of the simulation were adopted to explain the NMR experiments by hydrogen bonding analysis. The strong hydrogen bonds and weak C–H···O contacts coexist in the mixtures through the analysis of the radial distribution functions. And the liquid structures in the whole concentration of EtOH‐water mixtures can be classified into three regions by the statistic analysis of the hydrogen‐bonding network in the MD simulations. Moreover, the chemical shifts of the hydrogen atom are in agreement with the statistical results of the average number hydrogen bonds in the MD simulations. Interestingly, the excess relative extent of η rel E calculated by the MD simulations and chemical shifts in the EtOH aqueous solutions shows the largest deviation at x EtOH ≈0.18. The excess properties present good agreement with the excess enthalpy in the concentration dependence.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.008
Threshold uncertainty score0.292

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.008
GPT teacher head0.263
Teacher spread0.254 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it