PERCHLORATE ASSESSMENT OF THE NAKDONG AND YEONGSAN WATERSHEDS, REPUBLIC OF KOREA

Quiñ,ones, Oscar,Oh, Jeong-Eun,Vanderford, Brett,Kim, Joon Ha,Cho, Jaeweon,Snyder, Shane A. Wiley (John WileySons) 2007 Environmental toxicology and chemistry Vol.26 No.7

프루스트가 본 '사진'의 이미지와 서술

김귀원 대구대학교 인문과학연구소 2007 人文科學硏究 Vol.30 No.-

Nos études ont de savoir sur l'écriture et l'image dans la photo chez Proust. Le rôle de la photo est incontestable dans l'écriture proustienne puisque Proust est si obsédé par la collection de photos de personnages et de monuments que la photo donne des réfléxions sur l'image et écriture. Nous le considérons en trois perspectives : image ratée, la photo sur la mort et l'amour, la photo et la narration. En trouvant la différence entre l'image et la réalité, la narration est déconcerté de l'image ratée. Il trouve des portraits avec un décor stéréotypé qui a nulle profondeur ni perspective. Mais il y a l'alternance de l'image dans la conscience ainsi que l'image réelle empreinte négative et positive. La photo imbrique instantanément le souvenir de la grand-mère morte. Nous voyons l'ironie transmise sur la photo, une expérience de la distance entre sujet et objet. De plus, l'amour est aussi le sujet qui a un lien étroit avec la photo. L'amour de Swann est évolué à travers l'image de photo attisé le goût personnel. L'expérience de la photo sur la mort et l'amour nous permet de pénétrer notre intérieur en se dirigeant vers notre intérieur. Du fait qu'entre l'image et la réalité demeure le décalage, il y a le méprise du réalisme dans la description proustienne. La vision des images sur la photo concerne la technique narrative. La mode de la représentation dépasse la photo d'un simple moulage en créant une fusion avec des arts. Malgré le point négatif vis-à-vis photo, il veut une valeur esthétique de 'plusieurs épaisseurs d'art'. En particulier, les termes photographiques deviennent des métaphores de la vision proustienne : cliché, chambre noire, négatif, développer etc. . Ceux-ci met en jeu la vision descriptive et narrative parce que l'idéalisme de Proust consiste à avoir une prise de vue instantanée et approfondie dans la construction de la réalité vécue, au lieu d'en avoir une vue plate. Ainsi l'univers paradoxal de la photographie nous offre-t-il une problématique pour la représentation des images et l'expression narrative.

Obesity and Stroke: Does the Paradox Apply for Stroke?

Quiñones-Ossa Gabriel A,Lobo Carolina,Garcia-Ballestas Ezequiel,Florez William A,Moscote-Salazar Luis Rafael,Agrawal Amit 대한신경중재치료의학회 2021 Neurointervention Vol.16 No.1

Historically, obesity has been identified as one of the most important risk factors for developing cardiovascular diseases including stroke; however, a theory called “The Obesity Paradox” has been recently considered. The paradoxical theory is that obese or overweight patients (according to body mass index score) can have better outcomes compared to leaner or malnourished patients. The paradox was initially discovered in patients with heart failure. The purpose of this manuscript was to investigate whether this paradox also applies to stroke patients, according to information available in the current literature.

Establishing morphological and molecular evidences to support the identification of “yerba buena” (Mentha × villosa Huds.) in the Philippines

Quiñones Kristine Joyce O.,Gentallan Renerio P.,Bartolome Michael Cedric B.,Madayag Roselle E.,Timog Emmanuel Bonifacio S.,Cruz Juan Rodrigo A. Vera,Coronado Nadine B.,Endonela Leah E.,Borromeo Teresi 한국작물학회 2023 Journal of crop science and biotechnology Vol.26 No.5

Mentha × villosa is a perennial, aromatic herb that is commonly cultivated as a medicinal plant in the Philippines with verified medicinal properties. Using Illumina sequencing data, we assembled and annotated the complete chloroplast genome of an accession of M. × villosa (ICROPS 2020053) from the germplasm collection of the Institute of Crop Science, University of the Philippines Los Baños Laguna. Morphological characterization was done to ensure that the observed traits fall within the taxonomic description of the species and agree with the reference specimen conserved in the genebank and preserved in the herbarium. The complete cp genome is 152,048 bp long which exhibits a quadripartite circular structure and is characterized by a large single-copy of 83,179 bp, short single-copy of 17,653 bp, and a pair of inverted repeat regions of 25,068 bp each. The overall GC content of the chloroplast genome was 37.8%. The plastome is comprised of 130 genes coding for 37 tRNA, 8 rRNA and 84 mRNA. Phylogenetic analysis showed that M. × villosa is closely related to M. × piperita and M. spicata. This information further supports the conserved nature of chloroplast genomes despite historical natural interspecific hybridization. The assembled complete chloroplast genome of M. × villosa is valuable in elucidating phylogenetic relationships among Mentha species in the Philippines. These observed traits could be used as markers to identify M. × villosa, the medicinal species used by the Philippine herbal industry, which is often confused with other Mentha species.

Interstory-interbuilding actuation schemes for seismic protection of adjacent identical buildings

Francisco Palacios-Quiñonero,Josep Rubió-Massegú,Josep M. Rossell,José Rodellar 국제구조공학회 2019 Smart Structures and Systems, An International Jou Vol.24 No.1

Rows of closely adjacent buildings with similar dynamic characteristics are common building arrangements in residential areas. In this paper, we present a vibration control strategy for the seismic protection of this kind of multibuilding systems. The proposed approach uses an advanced Linear Matrix Inequality (LMI) computational procedure to carry out the integrated design of distributed multiactuation schemes that combine interbuilding linking devices with interstory actuators implemented at different levels of the buildings. The controller designs are formulated as static output-feedback H-infinity control problems that include the interstory drifts, interbuilding approachings and control efforts as controlled-output variables. The advantages of the LMI computational procedure are also exploited to design a fully-decentralized velocity-feedback controller, which can define a passive control system with high-performance characteristics. The main ideas are presented by means of a system of three adjacent five-story identical buildings, and a proper set of numerical simulations are conducted to demonstrate the behavior of the different control configurations. The obtained results indicate that interstory-interbuilding multiactuation schemes can be used to design effective vibration control systems for adjacent buildings with similar dynamic characteristics. Specifically, this kind of control systems is able to mitigate the vibrational response of the individual buildings while maintaining reduced levels of pounding risk.

폴리이미드 박막의 전기적 특성에 관한 연구

김유경,박귀남,김지균,이헌용 明知大學校 産業技術硏究所 2003 産業技術硏究所論文集 Vol.22 No.-

Abstract - in this study, Polymide(PI) Thin-films of MIS structure and MIM structure is deposited on Si wafer and AI Thin-films based on spincoating method. Using material is SE5291(PAA) of NISSAN CHEMICAL. Spincoating velocity is 4000[rpm] for 5[min] The uniform thin films of PI formed by curing at 150[℃] for 30[min](Soft baking) and 350[℃] for 60[min](Hard baking). Thickness of PI Thin-films is 150-170 [nm]. For Electrical characteristics of PI Thin-films measured Ⅰ-Ⅴ properties, C-V properties and f-C properties. The result analysis is like below: Ⅰ-Ⅴ characteristic using HP 4156A, C-V is HP 4280A f-C is HP 4294A

Maleinized Hyperbranched Polyol Polyester: Effect of the Content of Maleic Anhydride in the Structural, Thermal and Rheological Properties

Carlos A. Ararat,Winston Quiñonez,Edwin A. Murillo 한국고분자학회 2019 Macromolecular Research Vol.27 No.7

The aim of this work is to obtain the material that, in the future, may become a better alternative, as a functionalizing agent, to maleic anhydride (MA), or a crosslinking agent with the least amount of functional groups. To achieve that goal, a hyperbranched polyester polyol (HBP) of the second generation (HBP2G) was modified with MA to obtain HBP2GMA. The effects of the proportion of MA in the structural, thermal, and rheological properties of the HBP2GMAs were evaluated. Furthermore, these properties were compared with those of the HBP2G. A reduction in the intensity of peak corresponding to the OH stretching of HBP2G was observed with the increase in the extent of HBP2G modification by the analysis of the infrared (IR). HBP2GMAs showed a peak at 3030 cm-1 in their IR spectra, which was due to the -CH=CH- stretching of MA. This was further assessed by 1H NMR analysis. The number of MA units grafted into HBP2G was between 4 and 9, indicating a high degree of functionality. All materials possessed viscosity values below 34.94 Pa·s at 110 °C, which were dependent on the grade of the modification percentage (MP) and the molar content of MA grafted into HBP2G. Mass spectrometry analysis demonstrated the formation of products by the esterification reaction between the HBP2G and MA. The thermal stability of the HBP2GMAs determined as the decomposition temperature (Td) was between 258 and 281 °C which was better than that of the HBP2G.

Use of the β-Cyclodextrin Additive as a Good Alternative for the Substitution of Environmentally Harmful Additives in Industrial Dyeing Processes

Bruna Thaisa Martins Ferreira,Fernando Rodolfo Espinoza-Quiñones,Carlos Eduardo Borba,Aparecido Nivaldo Módenes,Washington Luiz Félix Santos,Fabricio Maestá Bezerra 한국섬유공학회 2020 Fibers and polymers Vol.21 No.6

In this work, the substitution of environmentally harmful additives in the industrial dyeing process of polyamide-6microfiber-made knitted fabrics (PA-6μFKF) was studied. Using the disperse red 60 (DR60) dye, kinetic adsorption tests onthe PA-6μFKF dyeing were performed by using either β-cyclodextrin (β-CD) additive, commercial leveling agents, orwithout additives. Equilibrium tests were also performed during 25 h. A modelling based on a dye adsorption processcontrolled by an intraparticle diffusion was proposed to represent the sets of kinetic data. Three isotherm models were alsotested for representing the equilibrium data. The kinetic data have evidenced three main dye diffusion zones. Differentadsorption mechanisms on PA-6μFKF surface dyeing was evidenced, being the data well represented by the two-stepLangmuir isotherm. Finally, the best quality on color uniformity was attained using the β-CD additive, revealing a goodalternative for the substitution of environmentally harmful additives in industrial dyeing processes.

Characterization of tannin extracts derived from the bark of four tree species by HPLC and FTIR

Ruiz-Aquino Faustino,Feria-Reyes Rossy,Rutiaga-Quiñones José Guadalupe,Robledo-Taboada Luis Humberto,Gabriel-Parra Rosalío 한국산림과학회 2023 Forest Science And Technology Vol.19 No.1

The objective of this work was the extraction and quantification of tannins obtained from the bark of four tree species from the forests of Ixtlan de Juarez, Oaxaca, Mexico (Arbutus xalapensis Kunth., Prunus serotina Ehrh., Quercus crassifolia Humb. and Bonpl., and Quercus laurina Humb. and Bonpl.), In this extraction process, 90% ethanol was used as solvent at an extraction temperature of 70 C for 2 h. The quantification of phenolic compounds, condensed tannins, and percentage of total extract, were obtained using the Stiasny number. The total extracts were 12.87, 16.38, 19.31, and 25.68% for P. serotina, Q. laurina, Q. crassifolia, and A. xalapensis, respectively. The condensed tannins were characterized by Fourier Transformed Infrared Spectroscopy (FTIR) where at 1626 cm1 is observed an isomerization that implies a rotation between the C and B rings that corresponding at elongation of bonds in benzene structure of catechin. The purity of the extracted tannins was analyzed by High Performance Liquid Chromatography (HPLC). The effectiveness of the extraction process was proven; the importance of knowing the amount of tannins will promote the utilization of the bark of these species. The results of the condensed tannin content place Quercus crasifolia (10.29%) and Arbutus xalapensis (13.12%) as potential sources of tannins.

Silk® Flow Diverter Device for Intracranial Aneurysm Treatment: A Systematic Review and Meta-Analysis

William A Florez,Ezequiel Garcia-Ballestas,Gabriel Alexander Quiñones-Ossa,Tariq Janjua,Subhas Konar,Amit Agrawal,Luis Rafael Moscote-Salazar 대한신경중재치료의학회 2021 Neurointervention Vol.16 No.3

Flow diverters have become a critical instrument for complex aneurysms treatment. However, limited data are currently available regarding short and long-term outcomes for the Silk flow diverter. The objective of the study is to determine neurological prognosis and mortality rates for the Silk flow diversion device used in intracranial aneurysms. A systematic review with meta-analysis was performed using databases. The following descriptors were used for the search: “SILK”, “Flow Diverter”, “Mortality”, and “Prognosis”. The following data were extracted: mortality, good functional outcome, Glasgow outcome scale, complete or near-complete occlusion rates, rate of retreatment, and complications (thromboembolic and hemorrhagic complications). A total of 14 studies were selected. Among the 14 studies, 13 were retrospective observational cohort studies and 1 was a prospective observational cohort study. The mortality rate was 2.84%. The clinical good outcomes rate was 93.3%. The poor outcome rate was 6.6%. The overall thromboembolic complication rate was 6.06% (95% confidence interval [CI] 0.00–6.37, P=0.12, I2=3.13%). The total hemorrhagic complication rate was 1.62% (95% CI 0.00–5.34, P=0.28, I2=1.56%). The complete aneurysm occlusion rate was 80.4% (95% CI 8.65–9.38, P<0.0001, I2=9.09%). The Silk diverter device has a good safety and efficacy profile for treating intracranial aneurysms with high complete occlusion rates.