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Record W7132880942

Effect of pressure on the rate of evaporation

2003· dissertation· W7132880942 on OpenAlexfundno aff
Payam Rahimi

Bibliographic record

VenueTSpace · 2003
Typedissertation
Language
FieldMathematics
TopicGas Dynamics and Kinetic Theory
Canadian institutionsnot available
FundersCanadian Space AgencyUniversity of Toronto
KeywordsEvaporationKinetic energyPosition (finance)Phase (matter)KineticsAnalytical Chemistry (journal)
DOInot available

Abstract

fetched live from OpenAlex

Classical kinetic theory has been traditionally applied for calculating the rate of evaporation, but recent results have indicated an inconsistency in this theoretical approach. A new method based on Statistical Rate Theory (SRT) for predicting the evaporation rate has been recently proposed. The method has been applied to predict the evaporation rate with surprising results. It is predicted that the evaporation rate is highly sensitive to the vapour-phase pressure. An experimental apparatus has been constructed to study this prediction. It is found that the evaporation rate from half closed capillaries in a container that includes a bulk liquid phase varies as a function of interface position within the capillaries. The interface position variation corresponds to a pressure difference at the interfaces in the order of magnitude of mPa; still, the evaporation rates are measurably different. The accuracy of the SRT expression for predicting the rate of evaporation may be examined by comparing the predicted vapour-phase pressure to that measured. Since the pressure can not be measured directly with an accuracy greater than approximately 3 Pa, a new method to determine the vapour-phase pressure is proposed. The validity of the method is established in two experiments under completely different environments. The vapour-phase pressure determined from this method was then used to examine the predicted pressure from the SRT. The agreement between the two pressures was within 4 mPa which is four orders of magnitude better than has been reported before.

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.

How this classification was reachedexpand

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)0.003
metaresearch head score (Gemma)0.002
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Theoretical or conceptual · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.818
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0030.002
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0010.000
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)0.0010.000

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 head0.012
GPT teacher head0.331
Teacher spread0.318 · 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

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

Study designTheoretical or conceptual
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2003
Admission routes1
Has abstractyes

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