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RISS 인기검색어
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- 저자 : Andino, (검색결과 6 건)
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SewonOh,JeanM.Andino 한국대기환경학회 2003 한국대기환경학회지 Vol.19 No.E3
Effects of inorganic aerosols on the kinetics of the hydroxyl radical reactions with selected aliphatic alkanes have been investigated using the relative rate technique. The relative rates in the absence and presence of aerosols were determined for n-butane, n-pentane, n-hexane, n-octane, and n-decane. P-xylene was used as a reference compound. Inorganic aerosols including (NH4)2SO4, NH4NO3, and NaCl aerosols at two different aerosol concentrations that are typical of polluted urban conditions were tested. Total surface areas of aerosols were 1400 (Condition I) and 3400 μm2 cm-3 (Condition II). Significant changes in the relative rates in the presence of the inorganic aerosols were not observed for the n-butane/∙OH, n-pentane/∙OH, n-hexane/∙OH, n-octane/∙OH, and n-decane/∙OH reactions versus p-xylene/∙OH reaction. These results suggest that the promoting effects depend on the semiconducting property of the aerosols and the nature of the organic compounds.
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Oh, Sewon,Andino, Jean M. 한국대기환경학회 2003 한국대기환경학회지 Vol.19 No.E3
Effects of inorganic. aerosols on the kinetics of the hydroxyl radical reactions with selected aliphatic alkanes have been investigated using the relative rate technique. The relative rates in the absence and presence of aerosols were determined for n-butane, n-pentane, n-hexane, n-octane, and n-decane. P-xylene was used as a reference compound. Inorganic aerosols including (NH₄)S0₄. NH₄NO₃, and NaCI aerosols at two different aerosol concentrations that are typical of polluted urban conditions were tested. Total surface areas of aerosols were 1400 (Condition I) and 3400㎛²cm (Condition II). Significant changes in the relative rates in the presence of the inorganic aerosols were not observed for the n-butane/· OH, n-pentane/·OH, n-hexane/·OH. n-octane/·OH, and n-decane/·OH reactions versus p-xylene/·OH reaction. These results suggest that the promoting effects depend on the semiconducting property of the aerosols and the nature of the organic compounds.
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EULALIA Y. SIU,JEAN M. ANDINO 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2008 NANO Vol.3 No.4
Organophosphate compounds (OPs) are common in pesticides and can be highly toxic. Negative environmental impacts resulting from the release of OPs can be reduced with rapid detection, which relies on sensitive sampling techniques. In this work, nanosized silica and silica/alumina were tested for their ability and behavior in adsorbing gas-phase dimethyl methylphosphonate (DMMP). Surface interactions were probed using Fourier transform infrared (FT-IR) spectroscopy with attenuated total reflectance (ATR) to establish correlations between surface properties and adsorption behavior. Adsorption characteristics were also investigated by gas chromatography (GC) equipped with a flame ionization detector (FID). Silica and silica/alumina adsorbents were exposed to DMMP in a flow system. FT-IR spectroscopy revealed that physical interactions between the adsorbents and DMMP were attributed to the presence of surface silanol. GC-FID results showed that adsorption onto both silica and silica/alumina followed Langmuir isotherm behavior. Silica demonstrated superior adsorption behavior as compared to silica/alumina. The following Langmuir isotherm constants are representative of the data: 0.88 for silica and 0.82 for silica/alumina.
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Intraumbilical versus intramuscular oxytocin in the management of the third stage of labor
Silvia Waleska Bu,César Alas-Pineda,David Aguilar-Andino,Dalton Argean Norwood,Kristhel Gaitán-Zambrano,Mario Pinto-Romero 대한산부인과학회 2023 Obstetrics & Gynecology Science Vol.66 No.2
ObjectiveTo compare the effect of intraumbilical vein oxytocin injection with standard management in reducing blood loss during the third and fourth stages of labor. Acute complications threaten the mother’s life during the third and fourth stages of labor. The most common complication is postpartum hemorrhage, which remains a leading cause of maternal mortality, particularly in developing countries. MethodsA randomized controlled trial was conducted in the Gynecology and Obstetrics Department of Leonardo Mart?nez Valenzuela Hospital from January to June 2021. A probabilistic sample was used: 332 pregnant patients were enrolled in the study and randomized into the case (166 patients) and control (166 patients) groups. The volume of blood lost was compared between the groups. ResultsThe median estimated blood loss was 120 mL (interquartile range [IQR], 80-218.75 mL). There was a statistically significant difference between the groups, showing less estimated blood loss in the international unit group with a median of 80 mL (IQR, 60-100 mL) (P<0.001), and 200 mL (IQR, 143.75-300 mL) in the intramuscular (IM) group, highlighting that 66.8% of the IM group had an estimated blood loss >251 mL. ConclusionAny reduction in bleeding during labor is clinically relevant because it improves patient prognosis. The use of intraumbilical oxytocin injection with active management of the third stage of labor significantly reduced postpartum blood loss and the duration of the third stage compared with the IM group.
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Brito-Carreón Cesar Armando,Zavala-Maldonado Karla,Suárez-Andino Erika Ivette,David Randy E.,Perez- Ramírez Gerardo,Diaz-Badillo Alvaro,Muñoz María de Lourdes 한국응용곤충학회 2022 Journal of Asia-Pacific Entomology Vol.25 No.2
Currently, there are no antiviral drugs that effectively reduce the risks and treat the symptoms associated with dengue virus (DENV). Consequently, efforts remain primarily focused on transmission reduction. One such effort concerns DENV receptors in mosquito vectors Aedes aegypti and Aedes albopictus. Despite a lack of direct evidence demonstrating the binding of DENV to cells in mosquito vectors, one putative DENV binding protein has been α-enolase. To develop a deeper understanding, this study tested whether DENV proteins bind to enolase localized in the cytoplasmic membrane of C6/36 cells using both anti-enolase-specific antibodies, and by colocalization analysis, using confocal microscopy. Additionally, to probe the interaction of enolase with the DENV E protein, we performed a docking analysis using PatchDock and FireDock software packages. Study results demonstrate that the DENV E protein interacts with enolase in the plasma membrane of C6/36 cells of Ae. albopictus. Specific anti-enolase antibodies were found to inhibit DENV infection of these cells. Moreover, enolase was found to be localized to the cytoplasmic mem brane, cytoplasm, and nucleus. These combined findings suggest that enolase participates in the entrance mechanism of DENV into vector cells.
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