... include the chain dimension and conformation, the local conformation and chain dynamics, and ... more ... include the chain dimension and conformation, the local conformation and chain dynamics, and the ... of a good structural fit of the POE helix to the water hexagonal structure. ... i +1 − conformational sequences, respectively, in which the brackets [ ] denote an ethylene oxide (EO) unit ...
Protein is becoming an increasingly important resource for a variety of commercial applications. ... more Protein is becoming an increasingly important resource for a variety of commercial applications. Yet, a large volume of protein is being wasted. Notably, livestock manure solids have a significant content of protein which is not only underutilized, but prone to runoff and eventual breakdown to reactive nitrogen compounds, contributing to eutrophication. It would be desirable to remove protein before it causes environmental hazards and then convert it to value-added commercial applications. We have developed a novel thermal hydrolysis process (THP) to extract crude protein from livestock manure solid, or manure digestate solid (MDS) in particular, without the use of any chemical. We demonstrate the versatility of our new process to control the molecular weight (MW) distribution of the extracted protein hydrolysate (PH). The antioxidant activity of the crude protein hydrolysate (CPH) has been examined through Oxygen Radical Absorbance Capacity Assay. The results have shown that our CP...
Additional file 1. Supplementary material. 1. Global protein generation by livestock animals. Tab... more Additional file 1. Supplementary material. 1. Global protein generation by livestock animals. Table S1. Estimated global volume of protein generated by livestock animals. 2. THP reactor vessel. Fig. S1. The cross section of the reaction vessel for THP. 3. Two-step THP. 4. Supplement to materials and methods. 4.1 Composition of materials. 4.2 SWIMU filtration. 5. Supplement to results. 5.1 ESR spectroscopy. Fig. S2. ESR chart of PH II. 6. Other supplemental materials.
A method of extraction of lithium contained in a brine, wherein: i. defining a first evaporation ... more A method of extraction of lithium contained in a brine, wherein: i. defining a first evaporation rate (T1) of the brine, the rate being lower than the evaporation rate for a precipitation of undesirable salts; ii. introducing a part of the initial brine in an evaporation basin, and it controls the concentration of the brine by stopping evaporation when the evaporation rate of the brine reaches the first evaporation rate (T1); and iii. forming a mixture by re-injecting the concentrated brine in the previous step in a portion of the initial brine; iv. is reproduced steps i to iii, replacing the initial portion of brine by mixing, to obtain a lithium-enriched brine having an evaporation rate equal to a second evaporation rate (T2) predefined; and V. it causes precipitation of lithium contained in the lithium-enriched brine.
Computational and Theoretical Polymer Science, 1999
Abstract We have performed molecular dynamics simulations of a poly(oxyethylene) (POE) chain with... more Abstract We have performed molecular dynamics simulations of a poly(oxyethylene) (POE) chain with 15 ethylene oxide units in an aqueous solution in the presence of potassium cations for 1 ns. The effect of the potassium ions on the POE aqueous solution characteristics are examined for the energetics, the hydration, the chain conformation and dynamics, and the solvent structure in comparison to those in the absence of cations. The POE's helical conformation is considerably distorted by complex formations with K+, and a significant perturbation of the POE hydration by K+ is observed. The competition between the K+–water and the K+–POE associations is found to be heavily shifted toward the latter. Furthermore, the POE–water pair interaction energy drastically decreases upon addition of K+. The observations, along with the decreased chain flexibility, point to the salting-out of POE salt aqueous solutions.
Density functional theory (DFT) calculations and classical molecular dynamics (MD) simulations ha... more Density functional theory (DFT) calculations and classical molecular dynamics (MD) simulations have been performed to gain insight into the difference in cycling behaviors between the ethylene carbonate (EC)-based and the propylene carbonate (PC)-based electrolytes in lithium-ion battery cells. DFT calculations for the ternary graphite intercalation compounds (Li+(S)iCn: S=EC or PC), in which the solvated lithium ion Li+(S)i (i=1~3) was inserted into a graphite cell, suggested that Li+(EC)iCn was more stable than Li+(PC)iCn in general. In addition, MD simulations were carried out to examine the solvation structures at a high salt concentration: 2.45 mol kg-1. The results showed that the solvation structure was significantly interrupted by the counter anions, having a smaller solvation number than that at a lower salt concentration (0.83 mol kg-1). The results from both DFT calculations and MD simulations are consistent with the recent experimental observations.
Calcul des energies potentielles pour differentes conformations de l'isobutyramide par des ca... more Calcul des energies potentielles pour differentes conformations de l'isobutyramide par des calculs de champ de force. Comparaison avec des calculs ab initio. Application a l'estimation des deplacements chimiques de RMN induits par lanthanide
HC60(CN)3 and C60(PEG)5 was synthesized by cyanide addition and atom transfer radical addition re... more HC60(CN)3 and C60(PEG)5 was synthesized by cyanide addition and atom transfer radical addition respectively. Fullerene- Nafion composite membranes with high quality were fabricated by a novel solution cast procedure. The composite membranes show enhanced proton conductivity at low humidity compare to recast Nafion made under the same condition. The membrane structure-property relationship was investigated by optical microscopy, SAXD and water uptake studies.
The effect of fullerene derivatives on the low humidity conductivity of Nafion® is discussed. Com... more The effect of fullerene derivatives on the low humidity conductivity of Nafion® is discussed. Composites of Nafion with fullerene and poly-hydroxyfullerene (PHF) as additives are fabricated using solution casting techniques. The extraction of the additives from these composites was studied using UV-Vis spectroscopy. These composites show an excellent stability to extraction of the additive. Some of these composites show improved low humidity conductivity over recast nafion.
Polymer electrolyte membrane (PEM) fuel cells deliver high power density and have lower weight an... more Polymer electrolyte membrane (PEM) fuel cells deliver high power density and have lower weight and volume compared to other fuel cells. However, current fuel cell membrane technology depends on water for proton transport. This restricts the fuel cell operational temperature range and requires the use of a heavy and bulky humidification sub-unit. Recently, MER has developed a novel PEM which circumvents this limitation by incorporating protons bonded to fullerenes. This membrane has a wider operational capability temperature range, significantly increases the performance and reduces dependence on humidification.
... include the chain dimension and conformation, the local conformation and chain dynamics, and ... more ... include the chain dimension and conformation, the local conformation and chain dynamics, and the ... of a good structural fit of the POE helix to the water hexagonal structure. ... i +1 − conformational sequences, respectively, in which the brackets [ ] denote an ethylene oxide (EO) unit ...
Protein is becoming an increasingly important resource for a variety of commercial applications. ... more Protein is becoming an increasingly important resource for a variety of commercial applications. Yet, a large volume of protein is being wasted. Notably, livestock manure solids have a significant content of protein which is not only underutilized, but prone to runoff and eventual breakdown to reactive nitrogen compounds, contributing to eutrophication. It would be desirable to remove protein before it causes environmental hazards and then convert it to value-added commercial applications. We have developed a novel thermal hydrolysis process (THP) to extract crude protein from livestock manure solid, or manure digestate solid (MDS) in particular, without the use of any chemical. We demonstrate the versatility of our new process to control the molecular weight (MW) distribution of the extracted protein hydrolysate (PH). The antioxidant activity of the crude protein hydrolysate (CPH) has been examined through Oxygen Radical Absorbance Capacity Assay. The results have shown that our CP...
Additional file 1. Supplementary material. 1. Global protein generation by livestock animals. Tab... more Additional file 1. Supplementary material. 1. Global protein generation by livestock animals. Table S1. Estimated global volume of protein generated by livestock animals. 2. THP reactor vessel. Fig. S1. The cross section of the reaction vessel for THP. 3. Two-step THP. 4. Supplement to materials and methods. 4.1 Composition of materials. 4.2 SWIMU filtration. 5. Supplement to results. 5.1 ESR spectroscopy. Fig. S2. ESR chart of PH II. 6. Other supplemental materials.
A method of extraction of lithium contained in a brine, wherein: i. defining a first evaporation ... more A method of extraction of lithium contained in a brine, wherein: i. defining a first evaporation rate (T1) of the brine, the rate being lower than the evaporation rate for a precipitation of undesirable salts; ii. introducing a part of the initial brine in an evaporation basin, and it controls the concentration of the brine by stopping evaporation when the evaporation rate of the brine reaches the first evaporation rate (T1); and iii. forming a mixture by re-injecting the concentrated brine in the previous step in a portion of the initial brine; iv. is reproduced steps i to iii, replacing the initial portion of brine by mixing, to obtain a lithium-enriched brine having an evaporation rate equal to a second evaporation rate (T2) predefined; and V. it causes precipitation of lithium contained in the lithium-enriched brine.
Computational and Theoretical Polymer Science, 1999
Abstract We have performed molecular dynamics simulations of a poly(oxyethylene) (POE) chain with... more Abstract We have performed molecular dynamics simulations of a poly(oxyethylene) (POE) chain with 15 ethylene oxide units in an aqueous solution in the presence of potassium cations for 1 ns. The effect of the potassium ions on the POE aqueous solution characteristics are examined for the energetics, the hydration, the chain conformation and dynamics, and the solvent structure in comparison to those in the absence of cations. The POE's helical conformation is considerably distorted by complex formations with K+, and a significant perturbation of the POE hydration by K+ is observed. The competition between the K+–water and the K+–POE associations is found to be heavily shifted toward the latter. Furthermore, the POE–water pair interaction energy drastically decreases upon addition of K+. The observations, along with the decreased chain flexibility, point to the salting-out of POE salt aqueous solutions.
Density functional theory (DFT) calculations and classical molecular dynamics (MD) simulations ha... more Density functional theory (DFT) calculations and classical molecular dynamics (MD) simulations have been performed to gain insight into the difference in cycling behaviors between the ethylene carbonate (EC)-based and the propylene carbonate (PC)-based electrolytes in lithium-ion battery cells. DFT calculations for the ternary graphite intercalation compounds (Li+(S)iCn: S=EC or PC), in which the solvated lithium ion Li+(S)i (i=1~3) was inserted into a graphite cell, suggested that Li+(EC)iCn was more stable than Li+(PC)iCn in general. In addition, MD simulations were carried out to examine the solvation structures at a high salt concentration: 2.45 mol kg-1. The results showed that the solvation structure was significantly interrupted by the counter anions, having a smaller solvation number than that at a lower salt concentration (0.83 mol kg-1). The results from both DFT calculations and MD simulations are consistent with the recent experimental observations.
Calcul des energies potentielles pour differentes conformations de l'isobutyramide par des ca... more Calcul des energies potentielles pour differentes conformations de l'isobutyramide par des calculs de champ de force. Comparaison avec des calculs ab initio. Application a l'estimation des deplacements chimiques de RMN induits par lanthanide
HC60(CN)3 and C60(PEG)5 was synthesized by cyanide addition and atom transfer radical addition re... more HC60(CN)3 and C60(PEG)5 was synthesized by cyanide addition and atom transfer radical addition respectively. Fullerene- Nafion composite membranes with high quality were fabricated by a novel solution cast procedure. The composite membranes show enhanced proton conductivity at low humidity compare to recast Nafion made under the same condition. The membrane structure-property relationship was investigated by optical microscopy, SAXD and water uptake studies.
The effect of fullerene derivatives on the low humidity conductivity of Nafion® is discussed. Com... more The effect of fullerene derivatives on the low humidity conductivity of Nafion® is discussed. Composites of Nafion with fullerene and poly-hydroxyfullerene (PHF) as additives are fabricated using solution casting techniques. The extraction of the additives from these composites was studied using UV-Vis spectroscopy. These composites show an excellent stability to extraction of the additive. Some of these composites show improved low humidity conductivity over recast nafion.
Polymer electrolyte membrane (PEM) fuel cells deliver high power density and have lower weight an... more Polymer electrolyte membrane (PEM) fuel cells deliver high power density and have lower weight and volume compared to other fuel cells. However, current fuel cell membrane technology depends on water for proton transport. This restricts the fuel cell operational temperature range and requires the use of a heavy and bulky humidification sub-unit. Recently, MER has developed a novel PEM which circumvents this limitation by incorporating protons bonded to fullerenes. This membrane has a wider operational capability temperature range, significantly increases the performance and reduces dependence on humidification.
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