6 research outputs found
Explaining fatigue: An examination of patient causal attributions and their (in)congruence with family doctors’ initial causal attributions
Vapor-Phase Metalation by Atomic Layer Deposition in a Metal–Organic Framework
Metal–organic frameworks (MOFs)
have received attention
for a myriad of potential applications including catalysis, gas storage,
and gas separation. Coordinatively unsaturated metal ions often enable
key functional behavior of these materials. Most commonly, MOFs have
been metalated from the condensed phase (i.e., from solution). Here
we introduce a new synthetic strategy capable of metallating MOFs
from the gas phase: atomic layer deposition (ALD). Key to enabling
metalation by <b>A</b>LD <b>I</b>n <b>M</b>OFs (<b>AIM</b>) was the synthesis of <b>NU-1000</b>, a new, thermally
stable, Zr-based MOF with spatially oriented −OH groups and
large 1D mesopores and apertures
Vapor-Phase Metalation by Atomic Layer Deposition in a Metal–Organic Framework
Metal–organic frameworks (MOFs)
have received attention
for a myriad of potential applications including catalysis, gas storage,
and gas separation. Coordinatively unsaturated metal ions often enable
key functional behavior of these materials. Most commonly, MOFs have
been metalated from the condensed phase (i.e., from solution). Here
we introduce a new synthetic strategy capable of metallating MOFs
from the gas phase: atomic layer deposition (ALD). Key to enabling
metalation by <b>A</b>LD <b>I</b>n <b>M</b>OFs (<b>AIM</b>) was the synthesis of <b>NU-1000</b>, a new, thermally
stable, Zr-based MOF with spatially oriented −OH groups and
large 1D mesopores and apertures
Cooking enhances but the degree of ripeness does not affect provitamin A carotenoid bioavailability from bananas
Banana is a staple crop in many regions where vitamin A deficiency is prevalent, making it a target for provitamin A biofortification. However, matrix effects may limit provitamin A bioavailability from bananas. The retinol bioefficacies of unripe and ripe bananas (study 1A), unripe high-provitamin A bananas (study 1B), and raw and cooked bananas (study 2) were determined in retinol-depleted Mongolian gerbils (n = 97/study) using positive and negative controls. After feeding a retinol-deficient diet for 6 and 4 wk in studies 1 and 2, respectively, customized diets containing 60, 30, or 15% banana were fed for 17 and 13 d, respectively. In study 1A, the hepatic retinol of the 60% ripe Cavendish group (0.52 ± 0.13 μmol retinol/liver) differed from baseline (0.65 ± 0.15 μmol retinol/liver) and was higher than the negative control group (0.39 ± 0.16 μmol retinol/liver; P < 0.0065). In study 1B, no groups differed from baseline (0.65 ± 0.15 μmol retinol/liver; P = 0.20). In study 2, the 60% raw Butobe group (0.68 ± 0.17 μmol retinol/liver) differed from the 60% cooked Butobe group (0.87 ± 0.24 μmol retinol/liver); neither group differed from baseline (0.80 ± 0.27 μmol retinol/liver; P < 0.0001). Total liver retinol was higher in the groups fed cooked bananas than in those fed raw (P = 0.0027). Body weights did not differ even though gerbils ate more green, ripe, and raw bananas than cooked, suggesting a greater indigestible component. In conclusion, thermal processing, but not ripening, improves the retinol bioefficacy of bananas. Food matrix modification affects carotenoid bioavailability from provitamin A biofortification targets