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Palacios-Pola Gabriela,Perales Hugo,Estrada Lugo Erin I. J.,Figueroa-Cárdenas Juan de Dios 한국식품연구원 2022 Journal of Ethnic Foods Vol.9 No.-
Nixtamalization, which means cooking maize in alkaline water, is the central technique for the culinary use of maize in Mexico and Central America. Without this procedure, relying on maize as the basic starch staple is inadequate because of nutriment deficiencies. Mexico has more than 50 principal racial types of maize, and these differ in grain qualities that can require the adjustment of the nixtamalization process. Properties such as hardness and grain composition influence nixtamalization because they are related to the absorption of water that occurs during cooking and steeping. Some maize preparations, like tortillas and tostadas, can also require the adjustment of nixtamalization to obtain a high-quality foodstuff. We studied how women in three regions of the state of Chiapas, which differ in the prevalent maize race available, prepare their nixtamal and whether they make changes according to the type of food they prepare. Interviews of 30 women follow the measure of relevant variables when the women prepared nixtamal. We found that nixtamalization is adjusted for different grain hardnesses and for environmental conditions. Variations were found in the cooking time of the nixtamal, in the amount of time the nixtamal was steeped, and in a special process of double boiling of the nixtamal performed by some women for tostadas. Women that specialize in production for the market have developed variations preferred by consumers. As practiced by women in Chiapas, nixtamalization is a flexible technique that is adjusted for maize type and for food preparations.
Magnetic field emergence in mesogranular-sized exploding granules observed with sunrise/IMaX data
Palacios, J.,Blanco Rodrí,guez, J.,Vargas Domí,nguez, S.,Domingo, V.,Martí,nez Pillet, V.,Bonet, J. A.,Bellot Rubio, L. R.,Iniesta, J. C. del Toro,Solanki, S. K.,Barthol, P.,Gandorfe EDP Sciences 2012 Astronomy and astrophysics Vol.537 No.-
<P>We report on magnetic field emergences covering significant areas of exploding granules. The balloon-borne mission SUNRISE provided high spatial and temporal resolution images of the solar photosphere. Continuum images, longitudinal and transverse magnetic field maps and Dopplergrams obtained by IMaX onboard SUNRISE are analyzed by local correlation traking (LCT), divergence calculation and time slices, Stokes inversions and numerical simulations are also employed. We characterize two mesogranular-scale exploding granules where~10<SUP>18</SUP> Mx of magnetic flux emerges. The emergence of weak unipolar longitudinal fields (~100 G) start with a single visible magnetic polarity, occupying their respective granules’ top and following the granular splitting. After a while, mixed polarities start appearing, concentrated in downflow lanes. The events last around 20 min. LCT analyses confirm mesogranular scale expansion, displaying a similar pattern for all the physical properties, and divergence centers match between all of them. We found a similar behaviour with the emergence events in a numerical MHD simulation. Granule expansion velocities are around 1 kms<SUP>−1</SUP> while magnetic patches expand at 0.65 kms<SUP>−1</SUP>. One of the analyzed events evidences the emergence of a loop-like structure. Advection of the emerging magnetic flux features is dominated by convective motion resulting from the exploding granule due to the magnetic field frozen in the granular plasma. Intensification of the magnetic field occurs in the intergranular lanes, probably because of being directed by the downflowing plasma.</P>
Palacios Carlos R Franco,Hoxhaj Rudiona,Thigpen Catlyn,Jacob Jeffrey,Bhatnagar Atul,Saberi Asif 대한중환자의학회 2023 Acute and Critical Care Vol.38 No.3
Background: Coronavirus disease 2019 (COVID-19) infection is associated with significant morbidity and mortality. Some patients develop severe acute respiratory distress syndrome and kidney failure requiring the combination of extracorporeal membrane oxygenation (ECMO) and continuous renal replacement therapy (CRRT). Methods: Retrospective cohort study of 127 consecutive patients requiring combined ECMO and CRRT support in intensive care units at an ECMO center in Marietta, GA, United States. Results: Sixty and 67 patients with and without COVID-19, respectively, required ECMO-CRRT support. After adjusting for confounding variables, patients with COVID-19 had increased mortality at 30 days (hazard ratio [HR], 5.19; 95% confidence interval [CI], 2.51–10.7; P<0.001) and 90 days (HR, 6.23; 95% CI, 2.60–14.9; P<0.001). Conclusions: In this retrospective study, patients with COVID-19 who required ECMO-CRRT had increased mortality when compared to patients without COVID-19.
Alberto Palacios Pawlovsky 대한전자공학회 2007 ITC-CSCC :International Technical Conference on Ci Vol.2007 No.7
In this work we show a method that mixes concepts from evolutionary and genetic algorithms. With it we have been able to obtain results that are as good as those obtained with a Simulated Annealing approach, but less time-consuming.
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.
Exploration of Aesthetic Principles for Urban Agriculture
Martin, Palacios,Jin-Oh Kim 전북대학교 휴양및경관계획연구소 2016 휴양및경관연구 (J East Asian Landscape Studies) Vol.10 No.3
The purpose of this work is to identify key factors that determine the spatial and physical appearance of urban agriculture, and to discuss ways to encourage its acceptance in public open spaces and the wider context of urban landscape. Because perceptions of urban agriculture are historically related to poverty and wartime, agricultural initiatives in the public realm are often considered visually disturbing, unkempt, and inconvenient. Depending on the context, typology, and scale, several obstacles to successful urban agriculture can be addressed; these include resource pollution, the lack of community involvement, and access to land. In an urban context, agricultural projects are often criticized for their lack of appropriate aesthetic values. By exploring theoretical assumptions through a review of the literature on visual landscape quality assessment, this study analyzes three international cases of urban agriculture in different physical and social contexts. After analyzing the relevant theories and cases, we have identified general principles that lead to the successful implementation of urban agriculture. We conclude that aesthetic values can be most successfully expressed in urban agriculture by identifying and efficiently implementing an approach that combines context, design, materiality, plant selection, and functionality. This study will help to promote resilient and sustainable urban landscapes that help to meet the demand for fresh food and healthy lifestyles, while making a positive contribution in the areas of environmental pollution, energy consumption, waste management, labor shortage, social exclusion, community participation, and rapidly expanding urbanization.
Comparison of physicochemical pretreatments of banana peels for bioethanol production
Sócrates Palacios,Héctor A. Ruiz,Rodolfo Ramos-Gonzalez,José Martínez,Elda Segura,Miguel Aguilar,Antonio Aguilera,Georgina Michelena,Cristóbal Aguilar,Anna Ilyina 한국식품과학회 2017 Food Science and Biotechnology Vol.26 No.4
Pretreatments with different concentrations of sulfuric acid (0, 0.5, and 1% v/v) and temperatures (28 and 121 C at 103 kPa in an autoclave) were performed on banana peels (BP) milled by mechanical grinding and grinding in a blender as well as without grinding. Cellulose, hemicellulose, lignin, ash, and total and reducing sugar contents were evaluated. The highest yields of cellulose enzymatic hydrolysis (99%) were achieved with liquefied autoclaved BP treated with 0.5 and 1% acid after 48 h of hydrolysis. Ethanol production by Kluyveromyces marxianus fermentation was assayed using hydrolyzed BP at 10, 15, and 20% (w/w). The highest ethanol level (21 g/ L) was reached after 24 h of fermentation with 20% (w/w) BP. Kinetics of the consumption of reducing sugars under this fermentation condition demonstrates the presence of a lag period (about 8 h). Thus, BP are a good source for ethanol production.
Jennifer Palacio,Daisy Sanchez,Shenae Samuels,Bar Y. Ainuz,Raelynn M. Vigue,Waleem E. Hernandez,Christopher J. Gannon,Omar H. Llaguna 한국간담췌외과학회 2023 Annals of hepato-biliary-pancreatic surgery Vol.27 No.3
Backgrounds/Aims: Current literature presents limited data regarding outcomes following conversion at the time of minimally invasive pancreaticoduodenectomy (MI-PD). Methods: The National Cancer Database was queried for patients who underwent pancreaticoduodenectomy. Patients were stratified into three groups: MI-PD, converted to open pancreaticoduodenectomy (CO-PD), and open pancreaticoduodenectomy (O-PD). Multivariable modeling was applied to compare outcomes of MI-PD and CO-PD to those of O-PD. Results: Of 17,570 patients identified, 12.5%, 4.2%, and 83.4% underwent MI-PD, CO-PD, and O-PD, respectively. Robotic pancreaticoduodenectomy (R-PD) resulted in a higher lymph node yield (n = 23.2 ± 12.2) even when requiring conversion (n = 22.4 ± 13.2, p < 0.001). Margin positivity was higher in the CO-PD group (26.6%) than in the MI-PD group (21.3%) and the O-PD (22.6%) group (p = 0.017). Length of stay was shorter in the MI-PD group (laparoscopic pancreaticoduodenectomy 10.4 ± 8.6, R-PD 10.6 ± 8.8) and the robotic converted to open group (10.7 ± 6.4) than in the laparoscopic converted to open group (11.2 ± 9) and the O-PD group (11.5 ± 8.9) (p < 0.001). After adjusting for patient and tumor characteristics, both MI-PD (odds ratio = 1.40; p < 0.001) and CO-PD (odds ratio = 1.24; p = 0.020) were significantly associated with an increased likelihood of long-term survival. Conclusions: CO-PD does not negatively impact perioperative or oncologic outcomes.
Fernando Palacios-Salas,Harold Benites-Goñi,Luis Marin-Calderón,Paulo Bardalez-Cruz,Jorge Vásquez-Quiroga,Edgar Alva-Alva,Bryan Medina-Morales,Jairo Asencios-Cusihuallpa 대한소화기내시경학회 2022 Clinical Endoscopy Vol.55 No.2
Background/Aims: Endoscopic submucosal dissection (ESD) is the preferred technique for treating early gastric cancer (EGC). However, very few studies have been conducted in South America. This study aimed to assess the efficacy and safety of ESD for EGC. Methods: We analyzed data from a prospective cohort from 2013 to 2020. A total of 152 superficial gastric neoplasms that fulfilledthe absolute or expanded criteria for ESD were included. Outcomes were en bloc, R0, and curative resection rates, incidence ofadverse events, and length of procedure. Results: The age of the enrolled patients was 68.4±11.3 years. The number of included patients based on the absolute and expandedindications was 150 and 2, respectively. En bloc, R0, and curative resections were achieved in 98.0%, 96.1%, and 89.5% of the cases,respectively. Bleeding and perforation were reported in 5.9% and 6.6% of the cases, respectively. Histopathological examinationrevealed low-grade dysplasia, high-grade dysplasia, well-differentiated adenocarcinoma, and poorly differentiated adenocarcinomain 13, 20, 117, and 2 cases, respectively. Conclusions: Our study shows that ESD performed by properly trained endoscopists in reference centers is safe and effective, withcomparable therapeutic outcomes to those reported in the Eastern series.