53 research outputs found
Color assay of the DNPH reaction with AD of different concentrations.
<p>(a) Color assay comparison. The AD concentration from left to right is 0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, and 5.0 g l<sup>-1</sup>. (b) Gray value of the color assay results. Values are presented as means Ā± SD (n = 3).</p
Various high-throughput screening methods.
<p>(a) Plate screening method where 1 and 2 indicate the control medium and bacteria growing on medium with 0.5 g/L of AD, respectively. (b) Color assay with DCPIP where 1 and 2 indicate the colonies growing on the gridded sterile membrane filters and colonies incubated with AD, respectively. (c) Color assay with DNPH where 1, 2, and 3 denote the AD standard as well as the product obtained during the process and at the end of the substrate transformation, respectively.</p
Effects of the amount of sulfuric acid and ethanol solution on the color assay.
<p>(a) Altered sulfuric acid percentage. (b) Altered ethanol solution percentage. Values are presented as means Ā± SD (n = 3).</p
Ratio of AD to DNPH solution on the color assay effect.
<p>Values are presented as means Ā± SD (n = 3).</p
Evaporation rate of the liquid and the strainās growth in the medium of different volumes in 24-deep-well plates.
<p>Evaporation rate of the liquid and the strainās growth in the medium of different <a href="http://www.baidu.com/link?url=uFnop5bAfCOEk9j_FyZK3Xmt7PkXxLt38MfY1YhMpWAyWestdxPVseLV__kVsF8Ck5T_oNfoBqXs0BSBkG9nl0YneXPSMkETzXw_zyyEF2tRJDK_68XzPnbSJdhVfmwp" target="_blank">volume</a>s in 24-deep-well plates.</p
Various high-throughput screening methods.
<p>(a) Plate screening method where 1 and 2 indicate the control medium and bacteria growing on medium with 0.5 g/L of AD, respectively. (b) Color assay with DCPIP where 1 and 2 indicate the colonies growing on the gridded sterile membrane filters and colonies incubated with AD, respectively. (c) Color assay with DNPH where 1, 2, and 3 denote the AD standard as well as the product obtained during the process and at the end of the substrate transformation, respectively.</p
Transformation by shake flask and analysis of the largest 9Ī±-OH-AD accumulation.
<p>The experiments were performed in triplicate. The standard deviations from three repeated experiments are shown. <i>t</i> test results are shown: *, P < 0.05; **, P < 0.01.</p
Amorphous TiO<sub>2</sub> Nanotube Anode for Rechargeable Sodium Ion Batteries
Sodium ion batteries are an attractive alternative to lithium ion batteries that alleviate problems with lithium availability and cost. Despite several studies of cathode materials for sodium ion batteries involving layered oxide materials, there are few low-voltage metal oxide anodes capable of operating sodium ion reversibly at room temperature. We have synthesized amorphous titanium dioxide nanotube (TiO<sub>2</sub>NT) electrodes directly grown on current collectors without binders and additives to use as an anode for sodium ion batteries. We find that only amorphous large diameter nanotubes (>80 nm I.D.) can support electrochemical cycling with sodium ions. These electrodes maximize their capacity in operando and reach reversible capacity of 150 mAh/g in 15 cycles. We also demonstrate for the first time a full cell all-oxide Na ion battery using TiO<sub>2</sub>NT anode coupled to a Na<sub>1.0</sub>Li<sub>0.2</sub>Ni<sub>0.25</sub>Mn<sub>0.75</sub>O<sub>Ī“</sub> cathode at room temperature exhibiting good rate capability
Lewis-Acid-Promoted Stoichiometric and Catalytic Oxidations by Manganese Complexes Having Cross-Bridged Cyclam Ligand: A Comprehensive Study
Redox-inactive metal ions have been
recognized to be able to participate
in redox metal-ion-mediated biological and chemical oxidative events;
however, their roles are still elusive. This work presents how the
redox-inactive metal ions affect the oxidative reactivity of a well-investigated
manganeseĀ(II) with its corresponding manganeseĀ(IV) complexes having
cross-bridged cyclam ligand. In dry acetone, the presence of these
metal ions can greatly accelerate stoichiometric oxidations of triphenylphosphine
and sulfides by the manganeseĀ(IV) complexes through electron transfer
or catalytic sulfoxidations by the corresponding manganeseĀ(II) complexes
with PhIO. Significantly, the rate enhancements are highly Lewis-acid
strength dependent on added metal ions. These metal ions like Al<sup>3+</sup> can also promote the thermodynamic driving force of the
Mn<sup>IV</sup>āOH moiety to facilitate its hydrogen abstraction
from ethylbenzene having a BDE<sub>CH</sub> value of 85 kcal/mol,
while it is experimentally limited to 80 kcal/mol for Mn<sup>IV</sup>āOH alone. Adding Al<sup>3+</sup> may also improve the manganeseĀ(II)-catalyzed
olefin epoxidation with PhIO. However, compared with those in electron
transfer, improvements in hydrogen abstraction and electron transfer
are minor. The existence of the interaction between Lewis acid and
the manganeseĀ(IV) species was evidenced by the blue shift of the characteristic
absorbance of the manganeseĀ(IV) species from 554 to 537 nm and by
converting its EPR signal at <i>g</i> = 2.01 into a hyperfine
6-line signal upon adding Al<sup>3+</sup> (<i>I</i> = 5/2).
Cyclic voltammograms of the manganeseĀ(IV) complexes reveal that adding
Lewis acid would substantially shift its potential to the positive
direction, thus enhancing its oxidizing capability
Electropherograms showing mutations in the <i>ALDH7A1</i> gene in 3 patients.
<p>A: c.410G>A (p.G137E), IVS11+1G>A (inverting sequencing) in case 1; B: heterozygous c.952 G>C (p.A318P), heterozygous c.965 C>T (p.A322V) in case 2; C: heterozygous c.902A>T (p.N301I), IVS11+1G>A (inverting sequencing) in case 3.</p
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