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María I. Isla,Iris C. Zampini,Roxana M. Ordóñez,Soledad Cuello,Belén Carrasco Juárez,Jorge Esteban Sayago,María I. Nieva Moreno,María Rosa Alberto,Nancy R. Vera,Enrique Bedascarrasbure,Alejandro Alvar 한국식품영양과학회 2009 Journal of medicinal food Vol.12 No.6
Propolis was included in the Argentine Food Code as a functional food. The chemical parameters and antioxidant properties of propolis samples from the same colonies of Apis mellifera in San Juan (Cuyo region, Western Argentine) were compared every month for 1 year using two collection methods. Chemical parameters were analyzed by the spectrophotometric method and fingerprinting using high-performance liquid chromatography with ultraviolet detection. The antioxidant activities of propolis samples were measured using model systems including the analysis of the scavenging activities for 2,2′-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals and the β-carotene bleaching assay. The results showed that propolis had a higher free radical scavenging and lipid peroxidation inhibitory capacity than butylated hydroxytoluene and quercetin, antioxidants used in the pharmaceutical and food industries. The concentration required to scavenge 50% of free radicals (SC50) values differed depending on the sample collection month. Samples collected in November had the highest antioxidant capacity. In all cases, SC50 values of propolis samples obtained by scraping were similar to those collected from a wire mesh (5μg/mL for ABTS and 20–30μg/mL for DPPH radicals). A significant positive correlation was found between the antioxidant capacity and flavonoid content of each analyzed extract. The chemical profiles were very similar. Galangin (3,5,7-trihydroxyflavone), an antioxidant compound, was detected in all samples as a major compound. The chromatographic profile suggests that of Baccharis sp., which would be one of the botanical sources of propolis from western Argentina, and the content of galangin can be used as a parameter for evaluating propolis quality. Our results suggest that Argentine propolis from Cuyo is a promising source of bioactive compounds as ingredients for developing functional foods with a beneficial impact on oxidative stress.
Identification and Tuning Methods for PI Control Systems Based on Symmetric Send-on-delta Sampling
José Sánchez Moreno,María Guinaldo Losada,Antonio Visioli,Sebastián Dormido Bencomo 제어·로봇·시스템학회 2019 International Journal of Control, Automation, and Vol.17 No.11
Two procedures for the definition of an autotuning algorithm for event-based proportional-integral (PI) control systems are proposed in this contribution. Firstly, a method for the identification of the most common transfer functions used for tuning PI controllers is explained. The rationale of the identification method is based on the limit cycles that the event-based sampler and a convenient tuning of the PI controller can produce in the closed loop. The identification method is designed for controller tuning, that is, fitting the behaviour of the process in the range of frequencies between ω−180◦ and ω−135◦ . Secondly, a new method for tuning the event-based PI controller is explained. The main control objective of the new tuning rule is to generate a set of parameters that introduces the process in a limit cycle at a user-specified inter-event time. However, by introducing an oscillation margin in the tuning rule, the method generalizes to produce controller parameters that avoid limit cycles with a certain robustness margin. Simulations demonstrate the effectiveness of the tuning rule to force the system to oscillate at a specified frequency as a consequence of the events triggered by the event-based sampler.
José María Paredes,Tomás Ripollés,Ángela Algarra,Rafael Diaz,Nadia Moreno,Patricia Latorre,María Jesús Martínez,Pilar Llopis,Antonio López,Eduardo Moreno-Osset 대한장연구학회 2022 Intestinal Research Vol.20 No.3
Background/Aims: Tight control of inflammation and adjustment of treatment if activity persists is the current strategy for the management of Crohn’s disease (CD). The usefulness of fecal calprotectin (FC) in isolated involvement of the small intestine in CD is controversial. To assess the usefulness of FC to determine the inflammatory activity detected by intestinal ultrasonography (IUS) in ileal CD. Methods: Patients with exclusively ileal involvement CD who underwent IUS and an FC were prospectively included. Simple ultrasound index was used to determine inflammatory activity. The usual statistical tests for comparison of diagnostic techniques were used. Results: One hundred and five patients were included, IUS showed inflammatory activity in 59% of patients and complications in 18.1%. FC showed a significant correlation with IUS in the weak range (Spearman coefficient <i>r</i>=0.502; <i>P</i><0.001); the area under the receiver operating characteristic curve was 0.79 (95% confidence interval, 0.70–0.88; <i>P</i><0.001). The FC value that best reflected the activity in IUS was 100 μg/g with sensitivity, specificity, and positive and negative predictive values of 73.0%, 71.4%, 79.3% and 63.8%, respectively. There were no differences in FC concentration between patients with or without transmural complications. The addition of serum C-reactive protein to FC did not improve the ability to assess IUS activity.Conclusions: FC has a significant correlation with IUS to monitor ileal CD activity. This correlation is weak and it does not allow assessing the presence of CD complications. Both tests should be used in conjunction for tight control of ileal CD. More studies on noninvasive tests in this location are needed.
Gonzalo Gurrea,Vicente Blanca-Giménez,Vicente Pérez,María-Antonia Serrano,Juan-Carlos Moreno,Solar Radiation Group of the Universitat Politècnica de València 한국기상학회 2018 Asia-Pacific Journal of Atmospheric Sciences Vol.54 No.4
The goal of this study was to statistically analyse the variability of global irradiance and ultraviolet erythemal (UVER) irradiance and their interrelationships with global and UVER irradiance, global clearness indices and ozone. A prediction of short-term UVER solar irradiance values was also obtained. Extreme values of UVER irradiance were included in the data set, as well as a time series of ultraviolet irradiance variability (UIV). The study period was from 2005 to 2014 and approximately 250,000 readings were taken at 5-min intervals. The effect of the clearness indices on global irradiance variability (GIV) and UIV was also recorded and bi-dimensional distributions were used to gather information on the two measured variables. With regard to daily GIVand UIV, it is also shown that for global clearness index (kt) values lower than 0.6 both global and UVER irradiance had greater variability and that UIVon cloud-free days (kt higher than 0.65) exceeds GIV. To study the dependence between UIVand GIV the χ2 statistical method was used. It can be concluded that there is a 95% probability of a clear dependency between the variabilities.A connection between high kt (corresponding to cloudless days) and low variabilities was found in the analysis of bidimensional distributions. Extreme values of UVER irradiance were also analyzed and it was possible to calculate the probable future values of UVER irradiance by extrapolating the values of the adjustment curve obtained from the Gumbel distribution.
Conceptual RF design of 750 MHz IH cavities for β = 0.10–0.15 ion beams in medical accelerators
Giner Navarro Jorge,Moreno Gabriela,Gavela Daniel,Oliver Concepción,Calvo Pedro,León Miguel,Rodríguez Ángel,López Ricardo,Carmona José Miguel,Alvarado María 한국원자력학회 2024 Nuclear Engineering and Technology Vol.56 No.9
In light of the potential interest of Interdigital H-mode (IH) cavities for accelerating carbon ion beams beyond 5 MeV/u, we are reviewing the key geometric elements of the regular cells and end cells to optimize performance in terms of power efficiency, achievable voltage, and dipole field correction.
Transvaginal ultrasound evaluation of the ureter
Juan Ramón Pérez Vidal,Carmen Llanos Llanos,Inmaculada Gómez Carrascosa,María Orenes Moreno,Pilar Marín Sánchez 대한산부인과학회 2022 Obstetrics & Gynecology Science Vol.65 No.4
ObjectiveIn this video, we present our technique for ureter assessment during pelvic ultrasound examination. MethodsWe used a general electric Voluson E10 (General electric, Wauwatosa, WI, USA) to perform transvaginal ultrasonography. These images were shared after thorough counselling, and obtaining informed consent from the patient. Thisvideo was edited using FinalCut ProX® (Apple Inc, Cupertino, CA, USA). ResultsWe systematized this routine after assessing the cervix, uterus, and adnexa. The vaginal probe was slightly removed tofocus on the urethra. Next, we approached the hand on the contralateral thigh to the ureter. At this point, the probewas directed to the lateral pelvic wall where the ureteric orifice was found. Then, we raised our hands and performan internal rotation movement to ascend the ureteral segments until it is related to the iliac vessels. ConclusionThe urinary tract may be involved in gynecological pathologies. Transvaginal ultrasound is an easy, reproducible, andwell-tolerated examination that can be used to evaluate the ureters below the pelvic brim. 영어
José Luis Muñoz-Carrillo,José Luis Muñoz-López,José Jesús Muñoz-Escobedo,Claudia Maldonado-Tapia,Oscar Gutiérrez-Coronado,Juan Francisco Contreras-Cordero,María Alejandra Moreno-García 대한기생충학ㆍ열대의학회 2017 The Korean Journal of Parasitology Vol.55 No.6
The immune response against Trichinella spiralis at the intestinal level depends on the CD4+ T cells, which can both suppress or promote the inflammatory response through the synthesis of diverse cytokines. During the intestinal phase, the immune response is mixed (Th1/Th2) with the initial predominance of the Th1 response and the subsequent domination of Th2 response, which favor the development of intestinal pathology. In this context, the glucocorticoids (GC) are the pharmacotherapy for the intestinal inflammatory response in trichinellosis. However, its therapeutic use is limited, since studies have shown that treatment with GC suppresses the host immune system, favoring T. spiralis infection. In the search for novel pharmacological strategies that inhibit the Th1 immune response (proinflammatory) and assist the host against T. spiralis infection, recent studies showed that resiniferatoxin (RTX) had anti-inflammatory activity, which decreased the serum levels of IL-12, INF-γ, IL-1β, TNF-α, NO, and PGE2, as well the number of eosinophils in the blood, associated with decreased intestinal pathology and muscle parasite burden. These researches demonstrate that RTX is capable to inhibit the production of Th1 cytokines, contributing to the defense against T. spiralis infection, which places it as a new potential drug modulator of the immune response.
Kevin M. Yaneselli,Cristiana P. Kuhl,Paula B. Terraciano,Fernanda S. de Oliveira,Sabrina B. Pizzato,Kamila Pazza,Alessandra B. Magrisso,Vanessa Torman,Analía Rial,María Moreno,Silvia Llambí,Elizabeth 대한수의학회 2018 Journal of Veterinary Science Vol.19 No.1
Mesenchymal stem cells (MSCs) have desirable characteristics for use in therapy in animal models and veterinary medicine, due to their capacity of inducing tissue regeneration and immunomodulation. The objective of this study was to evaluate the differences between canine adipose tissue-derived MSCs (AD-MSCs) extracted from subcutaneous (Sc) and visceral (Vs) sites. Surface antigenic markers, in vitro differentiation, and mineralized matrix quantification of AD-MSCs at different passages (P4, P6, and P8) were studied. Immunophenotypic analysis showed that AD-MSCs from both sites were CD44+, CD90+, and CD45−. Moreover, they were able, in vitro, to differentiate into fat, cartilage, and bone. Sc-AD-MSCs preserve in vitro multipotentiality up to P8, but Vs-AD-MSCs only tri-differentiated up to P4. In addition, compared to Vs-AD-MSCs, Sc-AD-MSCs had greater capacity for in vitro mineralized matrix synthesis. In conclusion, Sc-AD-MSCs have advantages over Vs-AD-MSCs, as Sc AD-MSCs preserve multipotentiality during a greater number of passages, have more osteogenic potential, and require less invasive extraction.