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Oral findings and its association with prenatal and perinatal factors in newborns
Perez-Aguirre, Brenda,Soto-Barreras, Uriel,Loyola-Rodriguez, Juan Pablo,Reyes-Macias, Juan Francisco,Santos-Diaz, Miguel Angel,Loyola-Leyva, Alejandra,Garcia-Cortes, Obed The Korean Pediatric Society 2018 Clinical and Experimental Pediatrics (CEP) Vol.61 No.9
Purpose: This study aimed to determine the frequency of abnormalities in the newborn oral cavity and to evaluate the association with prenatal and perinatal factors. Methods: This cross-sectional study evaluated 2,216 newborns. Oral findings were assessed in the first 24 hours of life using visual examination. Sex, weight, length, gestational age, and medical disorders at birth were recorded. Maternal demographic and medical information was also obtained. Results: The most common oral findings were Bohn's nodules, Epstein's pearls, and dental lamina cysts. Other intraoral findings included odontogenic cysts, ankyloglossia, and natal teeth, among others. In logistic regression analyses, folic acid consumption during pregnancy was significantly associated with Bohn's nodules (odds ratio [OR], 1.79; 95% confidence interval [CI], 1.23-2.55; P=0.002), Epstein's pearls (OR, 1.63; 95% CI, 1.14-2.33; P=0.007), and dental lamina cysts (OR, 1.45; 95% CI, 1.02-2.05; P=0.038). Moreover, preterm births were negatively associated with prevalence of Bohn's nodules (OR, 0.63; 95% CI, 0.50-0.80; $P{\leq}0.0001$). Comparison between newborns with and without oral inclusion cysts showed that maternal folic acid and iron intake were significantly different (P<0.05). Conclusion: Maternal folic acid and iron intake were associated with the prevalence of oral inclusion cysts.
Oral findings and its association with prenatal and perinatal factors in newborns
Brenda Perez-Aguirre,Uriel Soto-Barreras,Juan Pablo Loyola-Rodriguez,Juan Francisco Reyes-Macias,Miguel Angel Santos-Diaz,Alejandra Loyola-Leyva,Obed Garcia-Cortes 대한소아청소년과학회 2018 Clinical and Experimental Pediatrics (CEP) Vol.61 No.9
Purpose: This study aimed to determine the frequency of abnormalities in the newborn oral cavity and to evaluate the association with prenatal and perinatal factors. Methods: This cross-sectional study evaluated 2,216 newborns. Oral findings were assessed in the first 24 hours of life using visual examination. Sex, weight, length, gestational age, and medical disorders at birth were recorded. Maternal demographic and medical information was also obtained. Results: The most common oral findings were Bohn’s nodules, Epstein’s pearls, and dental lamina cysts. Other intraoral findings included odontogenic cysts, ankyloglossia, and natal teeth, among others. In logistic regression analyses, folic acid consumption during pregnancy was significantly associated with Bohn’s nodules (odds ratio [OR], 1.79; 95% confidence interval [CI], 1.23–2.55; P=0.002), Epstein’s pearls (OR, 1.63; 95% CI, 1.14–2.33; P=0.007), and dental lamina cysts (OR, 1.45; 95% CI, 1.02–2.05; P=0.038). Moreover, preterm births were negatively associated with prevalence of Bohn’s nodules (OR, 0.63; 95% CI, 0.50–0.80; P≤0.0001). Comparison between newborns with and without oral inclusion cysts showed that maternal folic acid and iron intake were significantly different (P<0.05). Conclusion: Maternal folic acid and iron intake were associated with the prevalence of oral inclusion cysts.
Tania Perez-Perez,Arletty Funcada-Martinez,Ania Cabrera-Diaz,Luis E. Guerra-Diaz,Deny Oliva-Merencio,Zhenia Milan,Ileana Pereda-Reyes 대한환경공학회 2022 Environmental Engineering Research Vol.27 No.5
Large pig farms generate enormous volumes of wastewater without proper treatment before discharge. High-rate anaerobic reactors as the expanded granular sludge bed (EGSB) are rarely reported for that purpose. In this study, an EGSB reactor with Cuban natural zeolite addition was evaluated for treating piggery wastewaters at lab scale. This study was conducted at different organic loading rate (OLR) ranging from 0.32 to 6.13 gCOD/Ld with a constant hydraulic retention time (HRT) of 12 h. The evolution of several control and operational parameters as the soluble chemical oxygen demand (COD) demonstrated a proper bioreactor performance to treat piggery wastewater. The results showed that the addition of natural zeolite at 40 gzeo/Lreactor in EGSB reactor results in COD efficiencies over 70%, despite of the fluctuations of fed wastewater characteristics. The kinetic study demonstrates that, the modified Stover-Kincannon model was found to be appropriate for EGSB reactor. The effluent soluble COD was predicted with high determination coefficient. The maximum removal rate constant (Umax) and saturation value constant (KB) were reported for a first time for the EGSB reactor with values of 10.2 and 11.8 gCOD/Ld, respectively. Methane yield for both, batch and continues experiments, were in the range from 214.5 to 299.8 mLCH4/gCOD.
Macarena GROSS ARIZA,Reyes ABAD FLORES,Maria F. Carrascal Perez CARRA 서울대학교 환경대학원 2020 環境論叢 Vol.66 No.-
Spread throughout the city, the “corralas” are essential pieces of Sevilla’s urban fabric (Spain). These spaces that were particularly shaped for an affordable co-life and craftwork activities have become a referent for contemporary creative communities, which have not just appropriated them but have emulated them. In obsolete industrial spaces, these social groups recreate this traditional way of life around a courtyard: the key element of vernacular residential architecture in this region. Corrala’s project of colife has allowed current creative workers to live and develop their practices, while, in a reciprocal process, they have become protectors of its meaning and mixed forms, an ethnological heritage in danger. This research focuses on the specific case of “El Pelícano”, a former cork factory inaugurated in the decade of the 1920’s, and its suitability for transformation into a contemporary creative venue assuming the corrala concept. The analysis is based on crossed methodologies: direct observation, interviews to the creators, participation in collective meals and other activities. A photo-shoot of El Pelícano by artist Macarena Gross presents its atmosphere and its phenomenological values in an attempt to reclaim the place of the creative corrala in the memory of this city.
Santiago Maldonado-Saeteros,Ricardo J. Baquerizo-Crespo,Yunet Gomez-Salcedo,Osney Perez-Ones,Ileana Pereda-Reyes 대한환경공학회 2023 Environmental Engineering Research Vol.28 No.2
Anaerobic digestion (AD) is a biological treatment susceptible to temperature variations. The Arrhenius model and the Van´t Hoff-Arrhenius relationship analyze the temperature effect in AD first-order kinetic constant (k). Kinetic data is relevant for estimating the hydraulic retention time (HRT) in continuous reactors. This research aimed to evaluate the behavior of kinetic constants concerning temperature using the Arrhenius model and Van´t Hoff-Arrhenius relationship and analyze the influence of kinetic constants as estimators of the HRT. The evaluation of the temperature effect in AD analyzed k fit to the Arrhenius model and Van’t Hoff-Arrhenius relationship. The research used data of AD methane yield (B₀) kinetics from the literature, corresponding to macroalgae (MA) (25, 35, 45℃), swine manure (SM) (25, 30, 35℃), and co-digestion of chicken manure with sawdust and miscanthus (CM) (35, 40, 42℃). The Arrhenius model and Van´t Hoff-Arrhenius relationship fitted the data with reduced temperature intervals (ΔT = 5℃). The HRT analysis used a mass balance model considering 80% of the maximum B0 compared with the technical digestion time at 80 (T<SUB>80</SUB>) and 90% (T<SUB>90</SUB>) of the maximum B₀. The results indicate that the HRT calculation is sensitive for k below 0.13 d<SUP>-1</SUP>.
Nelson, Michael T,Joksovic, Pavle M,Su, Peihan,Kang, Ho-Won,Van Deusen, Amy,Baumgart, Joel P,David, Laurence S,Snutch, Terrance P,Barrett, Paula Q,Lee, Jung-Ha,Zorumski, Charles F,Perez-Reyes, Edward Society for Neuroscience 2007 The Journal of neuroscience Vol.27 No.46
<P>T-type Ca2+ channels (T-channels) are involved in the control of neuronal excitability and their gating can be modulated by a variety of redox agents. Ascorbate is an endogenous redox agent that can function as both an anti- and pro-oxidant. Here, we show that ascorbate selectively inhibits native Ca(v)3.2 T-channels in peripheral and central neurons, as well as recombinant Ca(v)3.2 channels heterologously expressed in human embryonic kidney 293 cells, by initiating the metal-catalyzed oxidation of a specific, metal-binding histidine residue in domain 1 of the channel. Our biophysical experiments indicate that ascorbate reduces the availability of Ca(v)3.2 channels over a wide range of membrane potentials, and inhibits Ca(v)3.2-dependent low-threshold-Ca2+ spikes as well as burst-firing in reticular thalamic neurons at physiologically relevant concentrations. This study represents the first mechanistic demonstration of ion channel modulation by ascorbate, and suggests that ascorbate may function as an endogenous modulator of neuronal excitability.</P>