Inverse Research Papers - Academia.edu (original) (raw)
Inverse bicontinuous cubic lyotropic phases are a complex solution to the dilemma faced by all self-assembled water-amphiphile systems: how to satisfy the incompatible requirements for uniform interfacial curvature and uniform molecular... more
Inverse bicontinuous cubic lyotropic phases are a complex solution to the dilemma faced by all self-assembled water-amphiphile systems: how to satisfy the incompatible requirements for uniform interfacial curvature and uniform molecular packing. The solution reached in ...
- by Richard Templer
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- Water, Structure, Energy, Prediction
The physical properties of weak polyelectrolytes may be tailored via hydrophobic modification to exhibit useful properties under appropriate pH and ionic strength conditions as a consequence of the often inherently competing effects of... more
The physical properties of weak polyelectrolytes may be tailored via hydrophobic modification to exhibit useful properties under appropriate pH and ionic strength conditions as a consequence of the often inherently competing effects of electrostatics and hydrophobicity. Pulsed-gradient spin-echo NMR (PGSE-NMR), electron paramagnetic resonance (EPR), small-angle neutron scattering (SANS) surface tension, fluorescence, and pH titration have been used to examine the solution conformation and aggregation behavior of a series of hydrophobically modified hyperbranched poly(ethylene imine) (PEI) polymers in aqueous solution, and their interaction with sodium dodecylsulfate (SDS). PGSE-NMR gave a particularly insightful picture of the apparent molecular weight distribution. The presence of the hydrophobes led to a lower effective charge on the polymer at any given pH, compared to the (parent) nonmodified samples. Analysis of the SANS data showed that the propensity to form highly elliptical...
This paper describes the application of the adjoint method to the history matching problem in reservoir engineering. The history matching problem consists in adjusting a set of parameters, in this case the permeability distribution, in... more
This paper describes the application of the adjoint method to the history matching problem in reservoir engineering. The history matching problem consists in adjusting a set of parameters, in this case the permeability distribution, in order to match the data obtained with the simulator to the actual production data in the reservoir. Several numerical experiments are presented which show that
- by Ting-zhu Huang and +1
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- Engineering, Linear Algebra, Matrix Inversion, Mathematical Sciences
- by Jan Olofsson
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- Pregnancy, Humans, Correlation, Female
- by Marco Masia
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- Convection, Kinetics, Density, Transport
- by mayer davidson
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- Metabolism, Humans, Insulin, Resistance
Background While lipid-lowering drugs reduce cardiovascular risk, there is concern that their use may discourage dietary restriction of saturated fat (SF). The purpose of this analysis was to evaluate the association between taking... more
Background While lipid-lowering drugs reduce cardiovascular risk, there is concern that their use may discourage dietary restriction of saturated fat (SF). The purpose of this analysis was to evaluate the association between taking lipid-lowering drugs and SF intake. Materials and methods We analyzed cross-sectional data on cholesterol and diet from 6,473 adult respondents in the National Health and Nutrition Examination Survey, 1999–2002. Respondents were classified into three groups: (1) no history of high cholesterol (Desirable Cholesterol or DC), (2) history of high cholesterol without current drug treatment (Non-Drug Treated or NDT), and (3) history of high cholesterol with active lipid-lowering medication use (Drug-Treated or DT). Regression models were used to compare the mean percentage of daily kilocalories from SF among the three groups while controlling for confounders. Results Unadjusted analyses revealed significantly lower mean daily intake of SF (% of Kcal/day) among DT respondents compared to both DC (−.40 SF; 95% Confidence Interval [CI], −0.71 to −0.08) and NDT respondents [−.36 SF; CI, −0.79 to 0.06]. The complete multivariate model controlling for all covariates (age, sex, education, race/ethnicity, current smoking, alcohol use, BMI, physical activity, cardiovascular disease, diabetes, hypertension) attenuated the relationship compared to D (−.35 SF, CI −0.7 to −0.01) and NDT (−.25 SF, CI −0.62 to 0.12) individuals. Conclusion Taking lipid-lowering medications is associated with a lower intake of SF. However, a prospective study of diet and medication use is needed to definitively evaluate the relationship between lipid-lowering medications and SF intake.