46 research outputs found
A typical time course of seizure evolution process at day 6 (patient number 21).
<p>āSeizure beginsā indicated the initiation of seizure. A(0-12s of seizure) displayed a typical seizure which originated from occipital and temporal lobe(O<sub>1</sub>,O<sub>2</sub>,T<sub>4</sub>); spikes evolved into shape waves rhythm with broad base emphasized on the right hemisphere (B, 18-29s of seizure, O<sub>2</sub>,T<sub>4</sub>); Left hemisphere get involved mainly on the occipital lobe (C, 30-41s of seizure,O1); seizure ended with temporary voltage depression (D, 45-56s of seizure).</p
The relationship of seizure and severe hyperbilirubinemia.
<p>The relationship of seizure and severe hyperbilirubinemia.</p
Clinical features of the patients with seizure and severe hyperbilirubinemia.
<p>Clinical features of the patients with seizure and severe hyperbilirubinemia.</p
The relationship of temporal and/or occipital lobe seizure and severe hyperbilirubinemia.
<p>The relationship of temporal and/or occipital lobe seizure and severe hyperbilirubinemia.</p
T1 and T2 weighted MR imaging at day 7 (patient number 21).
<p>A: There was bilateral, symmetric, abnormal increased signal intensity in the GP on T1-weighted imaging. B: The above-mentioned lesions were not apparent on T2-weighted images.</p
Generation of Ultra-Clean Coal from Victorian Brown Coal: Effect of Hydrothermal Treatment and Particle Size on Coal Demineralization and the Extraction Kinetic of Individual Metals
This paper addressed the influences of hydrothermal treatment
and
particle size on the demineralization extent of Victorian brown coal
for the generation of ultra-clean coal to burn directly in a gas turbine
combined cycle. Extraction kinetics of individual metals have been
investigated. The results for four different sizes of two Victorian
brown coal samples showed that, for brown coal that is rich in the
aluminum-/silicon-bearing mineral grains, its demineralization extent
was dependent on coal particle size, showing the best result for the
coal size of 150ā300 Ī¼m. In contrast, the ash removal
efficiency of brown coal rich in organically bound metals
remained unaffected by particle size, substantiating a uniform distribution
of ash-forming metals on the coal surface as a weak association with
the oxygen-containing functional groups. The elution of most metals
followed a pseudo-second-order with a confidence interval ā„90%.
The activation energy and pre-exponential factor varied significantly
with element type and coal sample. Irrespective of coal sample, the
extraction of sodium (Na) was achieved instantaneously upon acid attack,
relative to iron (Fe) demonstrating an intraparticle diffusion controlling
extraction with an activation energy less than 20 kJ/mol. The coal
sample rich in mineral grains exhibited an elution behavior limited
by both surface reaction and intraparticle diffusion control with
respect to a variety of metals. The mineral-grain-rich coal was further
treated with pyroligneous acid, citric acid, and Na-EDTA followed
by pyroligneous acid at 200 Ā°C to maximize its demineralization
extent. As has been confirmed through the use of these three reagents,
the overall ash content in coal has been reduced to ā¼1.59,
0.95, and 1.17 dry basis (db)-wt %, respectively, as opposed to 2.49
db-wt % in the corresponding raw coal. This study has demonstrated
the potential use of waste pyroligneous acid and citric acid for brown
coal leaching to generate ultra-clean coal
Hyperbilirubinemia Influences Sleep-Wake Cycles of Term Newborns in a Non-Linear Manner
<div><p>Hyperbilirubinemia is a common cause for irreversible neuronal influence in the brain of term newborns, while the feature of neurological symptoms associated with hyperbilirubinemia has not been well characterized yet. In the present study, we examined a total of 203 neonates suffering from hyperbilirubinemia with a bedside amplitude-integrated Electroencephalography (aEEG) device, in order to determine whether there is any special change in sleep-wake cycles (SWCs). Among these patients, 14 cases showed no recognizable SWCs with the total serum bilirubin (TSB) level at 483.9ā996.2 Ī¼mol/L; 75 cases exhibited reduced SWCs with the TSB level at 311.2ā688.5 Ī¼mol/L; and the rest cases had the normal SWCs. The number of the normal SWCs occurrence had a significant negative correlation with the increased TSB level in a non-linear manner (<i>r = -0</i>.<i>689</i>, <i>p <0</i>.<i>001</i>). In addition, the increased TSB reshaped the structure of SWC by narrowing down the broadband and broadening the narrowband. Spearmanās correlation analysis indicated a significant negative correlation between the TSB level and the ratio of broadband (<i>r = -0</i>.<i>618</i>, <i>p < 0</i>.<i>001</i>), a significant positive correlation between the TSB level and the narrowband ratio (<i>r = 0</i>.<i>618</i>, <i>p < 0</i>.<i>001</i>), respectively. Furthermore, the change of SWC seemed like a continuous phenomenon, and the hyperbilirubinemia caused SWC changes was fit into a loess model in this paper. In summary, the hyperbilirubinemia influenced SWC of term newborns significantly at a non-linear manner, and these results revealed the feature of the neurological sequela that is associated with TSB.</p></div
Clinical Profiles of 14 Patients without SWC.
<p>Clinical Profiles of 14 Patients without SWC.</p
Reductive Leaching of Iron and Magnesium out of Magnesioferrite from Victorian Brown Coal Fly Ash
This
paper for the first time reports the reductive leaching of
an iron-rich brown coal fly ash composed principally of a chemically
resilient magnesioferrite (MgFe<sub>2</sub>O<sub>4</sub>) matrix.
The simultaneous mobilization of Fe and Mg out of magnesiorferrite
here aims to produce abundant Mg<sup>2+</sup> that can convert into
high-purity MgCO<sub>3</sub>, through a mineral carbonation process
for CO<sub>2</sub> capture, and abundant Fe<sup>2+</sup>/Fe<sup>3+</sup> that can convert into value-added high-purity Fe-rich compounds
such as FeOOH. Sulfur-bearing compounds, including Na<sub>2</sub>S,
Na<sub>2</sub>S<sub>2</sub>O<sub>4</sub>, and FeS<sub>2</sub>, were
used as reductants, on the basis of the fact that S is one of the
inherent elements in fly ash that has a Fe-reductive capability. Synchrotron-based
X-ray absorption near-edge spectroscopy was used to quantitatively
determine the speciation of Fe (Fe<sup>2+</sup> or Fe<sup>3+</sup>) and S (SO<sub>4</sub><sup>2ā</sup> or S<sup>2ā</sup>) in the leachate produced. Leaching with Na<sub>2</sub>S<sub>2</sub>O<sub>4</sub> and FeS<sub>2</sub> was found to produce the most Fe<sup>2+</sup> (more than 70% of total eluted Fe) in the leachate at 200
Ā°C. Increasing the leaching temperature is beneficial in increasing
the reactivity of FeS<sub>2</sub>, leading to a greater amount of
Fe<sup>2+</sup> produced at 200 Ā°C, whereas Na<sub>2</sub>S<sub>2</sub>O<sub>4</sub> reached its best performance at 100 Ā°C.
This is due to a quicker dissolution of Na<sub>2</sub>S<sub>2</sub>O<sub>4</sub> into the leachate to promote the reduction of inherent
Fe<sup>3+</sup>-bearing ash matrix in the liquid phase, whereas FeS<sub>2</sub> mainly remains as a solid, which is less reactive. None of
the mechanisms involved affected the total Mg<sup>2+</sup> cations
eluted. Increasing the molar ratio of S to Fe from 0.125 to 0.5 completely
reduced all aqueous Fe<sup>3+</sup> present to Fe<sup>2+</sup> for
both reductants. Concurrent with this was an incremental change in
total aqueous Fe amount when Na<sub>2</sub>S<sub>2</sub>O<sub>4</sub> was used. No significant increase in total Fe eluted was observed
when FeS<sub>2</sub> was used. The fate of S differs for both cases,
with S mostly mobilized in the leachate when Na<sub>2</sub>S<sub>2</sub>O<sub>4</sub> was used while predominantly being in the solid leaching
residue in the case of FeS<sub>2</sub>. In light of this, the use
of FeS<sub>2</sub> is more promising on a large scale, although it
is less active
Investigating the Effect of the Mg<sup>2+</sup>/Ca<sup>2+</sup> Molar Ratio on the Carbonate Speciation during the Mild Mineral Carbonation Process at Atmospheric Pressure
Aqueous
mineral carbonation of industrial wastes, such as fly ash,
is a promising sequestration technology to reduce CO<sub>2</sub> emissions
in small-/medium-sized plants. In this paper, the carbonation capacity
of a leachate rich in Mg<sup>2+</sup> and Ca<sup>2+</sup> contents
was examined to clarify the competition between the carbonation of
these two cations and the speciation of the resulting carbonate precipitate,
under the mild carbonation conditions using 20ā80 Ā°C and
atmospheric pressure. As confirmed, the carbonation precipitation
of the two cations was completed in 30ā40 min. At room temperature,
increasing the Mg<sup>2+</sup>/Ca<sup>2+</sup> molar ratio was in
favor of the carbonation rate of Mg<sup>2+</sup>, which is maximized
at the Mg<sup>2+</sup>/Ca<sup>2+</sup> molar ratio of 2. In contrast,
the carbonation rate of Ca<sup>2+</sup> was decreased monotonically
as a result of the competition from Mg<sup>2+</sup>. For both cations,
their carbonation rate was maximized at 60 Ā°C. In comparison
to the formation of predominant calcite and vaterite in the presence
of sole Ca<sup>2+</sup> in the leachate, the coexistence of two cations
resulted in the preferential formation of amorphous species, aragonite
and magnesian calcite. The quantity of the amorphous phase was increased
remarkably upon increasing the Mg<sup>2+</sup>/Ca<sup>2+</sup> molar
ratio at room temperature. An increase in the carbonation temperature
further deteriorated the crystallization of the carbonation precipitate,
resulting in the increase of the amount of amorphous species and the
phase change of calcium carbonate from calcite to aragonite