Mechanism of Phenolic Polymer Dissolution:  Importance of Acid−Base Equilibria

1999 ◽  
Vol 32 (16) ◽  
pp. 5337-5343 ◽  
Author(s):  
Lewis W. Flanagin ◽  
Christopher L. McAdams ◽  
William D. Hinsberg ◽  
Isaac C. Sanchez ◽  
C. Grant Willson
Keyword(s):  
Acid Base ◽  
Phenolic Polymer ◽  
Polymer Dissolution

The Mechanism of Phenolic Polymer Dissolution:  A New Perspective

1997 ◽  
Vol 30 (16) ◽  
pp. 4656-4664 ◽  
Author(s):  
Pavlos C. Tsiartas ◽  
Lewis W. Flanagin ◽  
Clifford L. Henderson ◽  
William D. Hinsberg ◽  
Isaac C. Sanchez ◽  
...  
Keyword(s):  
Phenolic Polymer ◽  
Polymer Dissolution ◽  
New Perspective

Probabilistic model for the mechanism of phenolic polymer dissolution

1998 ◽  
Author(s):  
Lewis W. Flanagin ◽  
Christopher L. McAdams ◽  
Pavlos C. Tsiartas ◽  
Clifford L. Henderson ◽  
William D. Hinsberg ◽  
...  
Keyword(s):  
Probabilistic Model ◽  
Phenolic Polymer ◽  
Polymer Dissolution

Higher Dietary Acidity is Associated with Lower Bone Mineral Density in Postmenopausal Iranian Women, Independent of Dietary Calcium Intake

2014 ◽  
Vol 84 (3-4) ◽  
pp. 0206-0217 ◽  
Author(s):  
Seyedeh-Elaheh Shariati-Bafghi ◽  
Elaheh Nosrat-Mirshekarlou ◽  
Mohsen Karamati ◽  
Bahram Rashidkhani
Keyword(s):  
Calcium Intake ◽  
Dietary Calcium ◽  
Dietary Calcium Intake ◽  
Dietary Intakes ◽  
Iranian Women ◽  
Acid Base Balance ◽  
Mineral Density ◽  
Acid Base ◽  
Base Balance ◽  
Dietary Acid

Findings of studies on the link between dietary acid-base balance and bone mass are relatively mixed. We examined the association between dietary acid-base balance and bone mineral density (BMD) in a sample of Iranian women, hypothesizing that a higher dietary acidity would be inversely associated with BMD, even when dietary calcium intake is adequate. In this cross-sectional study, lumbar spine and femoral neck BMDs of 151 postmenopausal women aged 50 - 85 years were measured using dual-energy x-ray absorptiometry. Dietary intakes were assessed using a validated food frequency questionnaire. Renal net acid excretion (RNAE), an estimate of acid-base balance, was then calculated indirectly from the diet using the formulae of Remer (based on dietary intakes of protein, phosphorus, potassium, and magnesium; RNAERemer) and Frassetto (based on dietary intakes of protein and potassium; RNAEFrassetto), and was energy adjusted by the residual method. After adjusting for potential confounders, multivariable adjusted means of the lumbar spine BMD of women in the highest tertiles of RNAERemer and RNAEFrassetto were significantly lower than those in the lowest tertiles (for RNAERemer: mean difference -0.084 g/cm2; P=0.007 and for RNAEFrassetto: mean difference - 0.088 g/cm2; P=0.004). Similar results were observed in a subgroup analysis of subjects with dietary calcium intake of >800 mg/day. In conclusion, a higher RNAE (i. e. more dietary acidity), which is associated with greater intake of acid-generating foods and lower intake of alkali-generating foods, may be involved in deteriorating the bone health of postmenopausal Iranian women, even in the context of adequate dietary calcium intake.

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