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Artificial light impacts the physical and nutritional quality of lettuce plants
Daymi Camejo,Antonio Frutos,Teresa C. Mestre,María del Carmen Piñero,Rosa M. Rivero,Vicente Martínez 한국원예학회 2020 Horticulture, Environment, and Biotechnology Vol.61 No.1
Leafy vegetables, including lettuce (Lactuca sativa L.), are considered to be healthy due to their high content of fiber, folate, carotenoids, phenolic and antioxidant compounds, minerals, and vitamins A, C, and K. Recently, LEDs are being used extensively as a supplementary light source in indoor agriculture due to the economical and physiological advantages that this artificial illumination offers compared to traditional fluorescence illumination. In this work, two commercially important lettuce varieties, Batavia Lettony (green leaves) and Batavia Diablotin (red leaves), were used to study the impact of LEDs (white and red–blue lights) and fluorescent illumination on their quality and health properties. Changes in the photosynthetic photon flux density from 250 to 400 µmol m−2 s−1 of fluorescent light increased growth parameters (leaf number, fresh and dry weight, and percentage of dry matter) of B. Lettony plants. We observed a positive impact of red–blue LED illumination on growth parameters analyzed in B. Diablotin plants compared to plants grown under fluorescent light at 250 µmol m−2 s−1. Leaf texture significantly increased in B. Lettony plants grown under 400 µmol m−2 s−1 fluorescent and LED illumination compared to that of plants grown under 250 µmol m−2 s−1 fluorescent light. This variable was only increased under red–blue LED illumination in B. Diablotin plants. Accumulation of bioactive compounds, such as anthocyanins and vitamin C, was higher in B. Diablotin plants grown under 250 µmol m−2 s−1 fluorescent light. Nutrient content in the foliar part was not modified under the light conditions used, except the Ca2+ content of B. Lettony plants grown under PPFD 400 µmol m−2 s−1 fluorescent light. Catalase (CAT) and peroxidase (POX) activities were differentially modified by light conditions in B. Lettony plants. However, POX activity was only modified in response to light conditions in B. Diablotin plants. Thus, this study demonstrates that LEDs could be used as an alternative to produce food under sustainable conditions. In this sense, although several horticultural studies have been conducted to establish the effectiveness of LEDs in lettuce growth, additional investigations are necessary to determine the optimal conditions for the use of LEDs to promote lettuce production and the accumulation of beneficial components, such as vitamins, minerals, fiber, and antioxidant compounds.
Dorys C. González,Álvaro Mena-Alonso,Jesús Mínguez,José A. Martínez,Miguel A. Vicente 한국콘크리트학회 2024 International Journal of Concrete Structures and M Vol.18 No.2
This paper shows the relationship, in steel fiber-reinforced concrete, between fiber orientation and fatigue response through the combined use of computed tomography (CT), digital image processing (DIP) software and wedge splitting test (WST). The WST cubes were extracted from conventional 150 × 150× 600 concrete prisms and a groove and notch were carved on different faces in such a way that in half of the test specimens the fibers are oriented mostly perpendicular to the breaking surface and, in the other half, the fibers are mostly oriented parallel to the breaking surface. Fiber orientation was obtained using a CT device and DIP software from a miniprism extracted from the previously mentioned concrete prisms. The results show that there is a strong correlation between the crack-sewing fiber orientation on the one hand and fatigue life and crack opening rate per cycle on the other hand. Cubes with a higher percentage of fibers perpendicular to the crack surface (i.e., with a higher efficiency index) show a longer fatigue life and a lower crack opening rate per cycle, while cubes with a lower efficiency index show a shorter fatigue life and a higher crack opening rate per cycle.
Vicente Pla-Martí,Jose Martín-Arévalo,Rosa Martí-Fernández,David Moro-Valdezate,Stephanie García-Botello,Alejandro Espí-Macías,Miguel Mínguez-Pérez,Maria Dolores Ruiz-Carmona,Jose Vicente Roig-Vila 대한대장항문학회 2022 Annals of Coloproctolgy Vol.38 No.1
Purpose: This study was performed to evaluate the long-term evolution of continence and patient’s quality of life after surgical treatment for obstetric fecal incontinence. Methods: A prospective longitudinal study was conducted including consecutive patients who underwent sphincteroplasty for severe obstetric fecal incontinence. The first phase analyzed changes in continence and impact on quality of life. The second phase studied the long-term evolution reevaluating the same group of patients 6 years later. Degree of fecal incontinence was calculated using the Cleveland Clinic Score (CCS). Quality of life assessment was carried out with the Fecal Incontinence Quality of Life scale. Results: Thirty-five patients with median age of 55 years (range, 28 to 73 years) completed the study. Phase 1 results: after a postoperative follow-up of 30 months (4 to 132 months), CCS had improved significantly from a preoperative of 15.7±3.1 to 6.1±5.0 (P<0.001). Phase 2 results: median follow-up in phase 2 was 110 months (76 to 204 months). The CCS lowered to 8.4±4.9 (P=0.04). There were no significant differences between phases 1 and 2 in terms of quality of life; lifestyle (3.47± 0.75 vs. 3.16±1.04), coping/behavior (3.13±0.83 vs. 2.80±1.09), depression/self-perception (3.65±0.80 vs. 3.32± 0.98), and embarrassment (3.32±0.90 vs. 3.12±1.00). Conclusion: Sphincteroplasty offers good short-medium term outcomes in continence and quality of life for obstetric fecal incontinence treatment. Functional clinical results deteriorate over time but did not impact on patients’ quality of life.
A. Gil,A.M. García,M. Fernández,M.A. Vicente,B. González-Rodríguez,V. Rives,S.A. Korili 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.53 No.-
Photocatalysts composed of titanium dioxide modified with B, F, N and P have been synthesized, characterized and applied to the degradation of caffeine, diclofenac, ibuprofen and salicylic acid. The modified TiO2 samples were prepared by the sol–gel technique starting from titanium(IV) isopropoxide and using H3BO3, NH4F, N(C2H5OH)3 and H3PO4 as precursors of the modifiers, with the content varying between 0 and 5 wt%. Structural characterization was based on nitrogen physisorption at 196 C, powder X-ray diffraction (PXRD), simultaneous thermogravimetric/differential thermal analysis (TG/ DTA) and X-ray photoelectron spectroscopy (XPS). The structural properties of the modified TiO2 solids were significantly different depending on the nature and amount of modifiers and the calcination temperature. TiO2 in the anatase phase was obtained in all cases and was stable upon calcination at 400 C. The photocatalytic degradation of caffeine, diclofenac, ibuprofen and salicylic acid by modified TiO2 was investigated under ultraviolet irradiation at 25 C. The photocatalytic degradation behavior followed the order: caffeine > diclofenac = ibuprofen > salicylic acid. B-doped TiO2 was the most efficient catalyst in the degradation of these selected emerging contaminants.
Phytate (myo-Inositol Hexaphosphate) and Risk Factors for Osteoporosis
A.A. López-González,F. Grases,P. Roca,B. Mari,M.T. Vicente-Herrero,A. Costa-Bauzá 한국식품영양과학회 2008 Journal of medicinal food Vol.11 No.4
Several risk factors seem to play a role in the development of osteoporosis. Phytate is a naturally occurring compound that is ingested in significant amounts by those with diets rich in whole grains. The aim of this study was to evaluate phytate consumption as a risk factor in osteoporosis. In a first group of 1,473 volunteer subjects, bone mineral density was determined by means of dual radiological absorptiometry in the calcaneus. In a second group of 433 subjects (used for validation of results obtained for the first group), bone mineral density was determined in the lumbar column and the neck of the femur. Subjects were individually interviewed about selected osteoporosis risk factors. Dietary information related to phytate consumption was acquired by questionnaires conducted on two different occasions, the second between 2 and 3 months after performing the first one. One-way analysis of variance or Student's t test was used to determine statistical differences between groups. Bone mineral density increased with increasing phytate consumption. Multivariate linear regression analysis indicated that body weight and low phytate consumption were the risk factors with greatest influence on bone mineral density. Phytate consumption had a protective effect against osteoporosis, suggesting that low phytate consumption should be considered an osteoporosis risk factor.
Silva-Campillo Arturo,Suárez-Bermejo J.C.,Herreros-Sierra M.A.,de Vicente M. 대한조선학회 2021 International Journal of Naval Architecture and Oc Vol.13 No.1
Container ships has a transverse section in the form of an open profile, making it very sensitive to torsion phenomena. To minimize this effect, a structure known as a torsion box exists, which is subject to high stresses influenced by the fatigue phenomenon and the existence of cut-outs, for the passage of the longitudinal stiffeners, acting as stress concentrators. The aim of this study is to propose a two-stage design methodology to aid designers in satisfying the structural requirements and contribute with to a better understanding of the considered structure. The transverse webs of a torsional box structure are examined by comparing different cut-out geometries from numerical models with different regular load conditions to obtain the variables of the fatigue safety factor through linear regression models. The most appropriate geometry of the torsion box is established in terms of minimum weight, from nonlinear multivariable optimization models.
Julio Cesar Magalhães,Mariana Gongora,Renan Vicente,Juliana Bittencourt,Guaraci Tanaka,Bruna Velasques,Silmar Teixeira,Gledys Morato,Luis F. Basile,Oscar Arias-Carrión,Fernando A.M.S Pompeu,Mauricio C 대한정신약물학회 2015 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.13 No.1
Objective: The present study sought to analyze the influence of Levetiracetam (LEV) in cognitive performance by identifying the changes produced by LEV in reaction time, in neuropsychological assessment of attention and memory and in absolute theta power in frontal activity. Methods: Twelve healthy subjects (5 men and 7 women; mean age, 30.08 years, standard deviation, 4.71) were recruited for this study. The neuropsychological tests: Trail Making Test (A and B), Digit Span (direct and indirect numerical orders/working memory); Stroop test (inhibitory control of attention); Tower of London (planning and decision-making) and a quantitative electroencephalography were applied in 2 different days after and before the participants ingested the capsule of placebo or 500 mg LEV. Results: A two-way-ANOVA was implemented to observe the interaction between conditions (placebo or LEV 500 mg) and moments (pre- and post-ingestion of LEV or placebo). The data were analyzed by the SPSS statistical package (p<0.05). For the neuropsychological parameter, the Trail Making Test (A) was the only test that showed significant difference for condition in the task execution time (p=0.026). Regarding the reaction time in the behavioral parameter, an interaction between both factors (p=0.034) was identified through a two-way-ANOVA (condition versus moment). Electrophysiological measures showed a significant interaction for electrodes: F7, F3, and FZ. Conclusion: The findings showed that LEV promotes an important cognitive enhancement in the executive functions.
Location of<i>γ</i>-ray emission and magnetic field strengths in OJ 287
Hodgson, J. A.,Krichbaum, T. P.,Marscher, A. P.,Jorstad, S. G.,Rani, B.,Marti-Vidal, I.,Bach, U.,Sanchez, S.,Bremer, M.,Lindqvist, M.,Uunila, M.,Kallunki, J.,Vicente, P.,Fuhrmann, L.,Angelakis, E.,Kar Springer-Verlag 2017 Astronomy and astrophysics Vol.597 No.-