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Laine B. Butler,Kate B. Nooner 대한정신약물학회 2023 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.21 No.3
As one of the leading causes of death globally, suicide has been researched extensively to better understand factors that confer risk or resilience for suicidality. Promising areas of the literature have focused on brain-based factors that might indicate susceptibility to suicide. Some studies have investigated the link between electroencephalography (EEG) asymmetry, referring to differences in electrical activity in the brain from the left to right hemisphere, and suicidality. The present study is a comprehensive review and meta-analysis of the literature to see if certain patterns in EEG asymmetry serve as a diathesis for suicidal thoughts and behaviors. The results of the current investigation found that EEG asymmetry was not systematically related to suicide based on the literature reviewed. While the present review does not rule out all brain-based factors, the findings suggest that EEG asymmetry may not be a biomarker for suicidality.
Zero distribution of some delay-differential polynomials
Ilpo Laine,Zinelaabidine Latreuch 대한수학회 2020 대한수학회보 Vol.57 No.6
Let $f$ be a meromorphic function of finite order $\rho$ with few poles in the sense $S_{\lambda}(r,f):=O(r^{\lambda +\varepsilon})+S(r,f)$, where $\lambda <\rho$ and $\varepsilon \in (0,\rho-\lambda)$, and let $g(f):=\sum_{j=1}^{k}b_{j}(z)f^{(k_j)}(z+c_{j})$ be a linear delay-differential polynomial of $f$ with small meromorphic coefficients $b_{j}$ in the sense $S_{\lambda}(r,f)$. The zero distribution of $f^{n}(g(f))^{s}-b_{0}$ is considered in this paper, where $b_0$ is a small function in the sense $S_{\lambda}(r,f)$.
Richard M. Laine,Min Kim 한양대학교 세라믹연구소 2007 Journal of Ceramic Processing Research Vol.8 No.2
We report here the synthesis of (ZrO2)1-x(Al2O3)x nanooxide powders with molar ratios that span the ZrO2-Al2O3 composition range. Liquid-feed flame spray pyrolysis (LF-FSP) of mixtures of N(CH2CH2O)3Al (alumatrane) and Zr(CH3CH2COO)2(OH)2 precursors dissolved in ethanol, were aerosolized with O2, combusted at temperatures of 1500-2000oC and rapidly quenched thereafter to provide (ZrO2)1-x(Al2O3)x nanopowders of selected compositions. All powders exhibit average particle sizes (APSs) < 20 nm and corresponding surface areas of ≈50 m2/g when produced at rates of 100-300 g/h. The as-processed powders were characterized in terms of phase, APS, specific surface area, composition, and morphology by BET, XRD, XRF, SEM, TEM, FT-IR, and TGA-DTA. The presence of δ-alumina and tetragonal zirconia is observed over most of the compositions studied. Furthermore, this phase segregation leads to the formation of core-shell materials. Evidence is presented suggesting the incorporation of Zr2+/3+ ions above the published solubility limit of ZrO2 in δ-alumina. We report here the synthesis of (ZrO2)1-x(Al2O3)x nanooxide powders with molar ratios that span the ZrO2-Al2O3 composition range. Liquid-feed flame spray pyrolysis (LF-FSP) of mixtures of N(CH2CH2O)3Al (alumatrane) and Zr(CH3CH2COO)2(OH)2 precursors dissolved in ethanol, were aerosolized with O2, combusted at temperatures of 1500-2000oC and rapidly quenched thereafter to provide (ZrO2)1-x(Al2O3)x nanopowders of selected compositions. All powders exhibit average particle sizes (APSs) < 20 nm and corresponding surface areas of ≈50 m2/g when produced at rates of 100-300 g/h. The as-processed powders were characterized in terms of phase, APS, specific surface area, composition, and morphology by BET, XRD, XRF, SEM, TEM, FT-IR, and TGA-DTA. The presence of δ-alumina and tetragonal zirconia is observed over most of the compositions studied. Furthermore, this phase segregation leads to the formation of core-shell materials. Evidence is presented suggesting the incorporation of Zr2+/3+ ions above the published solubility limit of ZrO2 in δ-alumina.
Leakage Flow Influence on SHF pump model performances
Dupont, Patrick,Bayeul-Laine, Annie-Claude,Dazin, Antoine,Bois, Gerard,Roussette, Olivier,Si, Qiaorui Korean Society for Fluid machinery 2015 International journal of fluid machinery and syste Vol.8 No.3
This paper deals with the influence of leakage flow existing in SHF pump model on the analysis of internal flow behaviour inside the vane diffuser of the pump model performance using both experiments and calculations. PIV measurements have been performed at different hub to shroud planes inside one diffuser channel passage for a given speed of rotation and various flow rates. For each operating condition, the PIV measurements have been trigged with different angular impeller positions. The performances and the static pressure rise of the diffuser were also measured using a three-hole probe. The numerical simulations were carried out with Star CCM+ 9.06 code (RANS frozen and unsteady calculations). Some results were already presented at the XXth IAHR Symposium for three flowrates for RANS frozen and URANS calculations. In the present paper, comparisons between URANS calculations with and without leakages and experimental results are presented and discussed for these flow rates. The performances of the diffuser obtained by numerical calculations are compared to those obtained by the three-holes probe measurements. The comparisons show the influence of fluid leakages on global performances and a real improvement concerning the efficiency of the diffuser, the pump and the velocity distributions. These results show that leakage is an important parameter that has to be taken into account in order to make improved comparisons between numerical approaches and experiments in such a specific model set up.
Leakage Flow Influence on SHF pump model performances
Dupont, Patrick,Bayeul-Laine, Annie-Claude,Dazin, Antoine,Bois, Gerard,Roussette, Olivier,Si, Qiaorui Korean Society for Fluid machinery 2015 International journal of fluid machinery and syste Vol.8 No.4
This paper deals with the influence of leakage flow existing in SHF pump model on the analysis of internal flow behaviour inside the vane diffuser of the pump model performance using both experiments and calculations. PIV measurements have been performed at different hub to shroud planes inside one diffuser channel passage for a given speed of rotation and various flow rates. For each operating condition, the PIV measurements have been trigged with different angular impeller positions. The performances and the static pressure rise of the diffuser were also measured using a three-hole probe. The numerical simulations were carried out with Star CCM+ 9.06 code (RANS frozen and unsteady calculations). Some results were already presented at the XXth IAHR Symposium for three flowrates for RANS frozen and URANS calculations. In the present paper, comparisons between URANS calculations with and without leakages and experimental results are presented and discussed for these flow rates. The performances of the diffuser obtained by numerical calculations are compared to those obtained by the three-holes probe measurements. The comparisons show the influence of fluid leakages on global performances and a real improvement concerning the efficiency of the diffuser, the pump and the velocity distributions. These results show that leakage is an important parameter that has to be taken into account in order to make improved comparisons between numerical approaches and experiments in such a specific model set up.