David Carreño, Pablo G. Toral, Eric Pinloche, Álvaro Belenguer, David R. Yáñez-Ruíz, Gonzalo Hervás, Neil McEwan, C. J. Newbold, Pilar Frutos,
Abstract The role of marine lipids as modulators of ruminal biohydrogenation of dietary unsaturated fatty acids may be explained by the effects of their n-3 polyunsaturated fatty acids (PUFA) on the bacterial community. However, the impact of individual PUFA has barely been examined, and it is uncertain which bacteria are truly involved in biohydrogenation. In addition, despite interspecies differences in rumen bacterial composition, we are not aware of any direct comparison of bovine and ovine responses ...
Tópico(s): Genetic and phenotypic traits in livestock
2019 - Nature Portfolio | Scientific Reports
A. Álvarez‐Herrero, H. Guerrero, T. Belenguer, David Lévy,
A temperature sensor based on overlay on side-polished fibers is presented. It works on the basis of the evanescent field coupling between a single-mode side-polished optical fiber and a dielectric waveguide overlay. The spectrum of a white light beam transmitted through the former system exhibit sharp and deep regularly spaced resonances whose central wavelenths are linearly shifted with temperature. It has a wavelength sensitivity of /spl sim/1 nm//spl deg/C, which is one order of magnitude better ...
Tópico(s): Advanced Fiber Laser Technologies
2000 - Institute of Electrical and Electronics Engineers | IEEE Photonics Technology Letters
G. Ramos, Tomás Belenguer, David Lévy,
Highly photoconductive properties are reported for organic-inorganic hybrid sol-gel thin film materials composed of a classical poly(vinylcarbazole)/2,4,7-trinitro-9-fluorenone (PVK/TNF) polymeric mixture, entrapped in a SiO(2) matrix, whose pores have been chemically modified by organic functional groups. The highest photosensitivity obtained, 3.4 x 10(-10) cm Omega(-1) W(-1) at E 22 V microm(-)1, at the optimum molar ratio between the active components, TNF, PVK, and SiO(2), is in the range of ...
Tópico(s): Nonlinear Optical Materials Research
2006 - American Chemical Society | The Journal of Physical Chemistry B
Pablo G. Toral, Gonzalo Hervás, Álvaro Belenguer, David Carreño, Pilar Frutos,
Milk fat depression (MFD) caused by trans-10,cis-12 18:2 is known to be mediated in cows and ewes by downregulation of mammary lipogenic genes. However, transcriptional mechanisms underlying marine lipid-induced MFD have not been well defined yet and the few available studies in ovine are not consistent. This trial was conducted to directly compare changes in animal performance, milk fatty acid composition, and particularly mammary mRNA abundance of candidate lipogenic genes and transcription factors ...
Tópico(s): Ruminant Nutrition and Digestive Physiology
2017 - Elsevier BV | Journal of Dairy Science
Armando González‐Sánchez, María Santos Tomás Belenguer, Antonio David Dorado Castaño, Xavier Gamisans, Albert Guisasola, Javier Lafuente, David Gabriel,
A kinetic model for the elemental sulfur and sulfate production from the autotrophic sulfide oxidation has been proposed. It is based on two kinetic equations able to describe the simultaneous microbial consumption of oxygen and sulfide (OUR and SUR) as a function of a particular sulfide-oxidizing microorganism or its physiological state, these can be characterized by the assessment of their kinetic constants. The respirometric technique allowed to estimate the dynamic experimental OUR and SUR profiles, ...
Tópico(s): Water Quality Monitoring and Analysis
2009 - Pergamon Press | Water Science & Technology
Joan Puig‐Barberà, Javier Díez‐Domingo, Santiago Pérez‐Hoyos, Ángel Belenguer‐Varea, David González Vidal,
Case–control study designed to determine the effectiveness of an MF59-adjuvanted influenza vaccine in the population aged 65 years and older living in the community. Detailed health histories were obtained on both cases and controls that included a functional measure of co-morbidity (Barthel Index). Subjects were all eligible persons admitted to various hospitals with a diagnosis of pneumonia during the winter months and were matched by sex, hospital and admission week to controls admitted for non- ...
Tópico(s): Respiratory viral infections research
2004 - Elsevier BV | Vaccine
Francisco José Tarazona‐Santabalbina, Jorge Llabata-Broseta, Ángel Belenguer‐Varea, David Álvarez‐Martínez, David Cuesta-Peredó, Juan Antonio Avellana-Zaragoza,
Comprehensive geriatric assessment (CGA) has shown to benefit older patients undergoing urological and orthopedic surgery. However, this approach has been scarcely assessed in patients elected for colorectal surgery.Retrospective cohort of patients aged ≥70 years admitted for elective colorectal cancer surgery to a single hospital between 2008 and 2012. Upon admission, patients were assigned to a usual care (UC) plan or a CGA-based care (GS) plan conducted by a multidisciplinary team, according to standard ...
Tópico(s): Frailty in Older Adults
2018 - Elsevier BV | Journal of Geriatric Oncology
Cristina Martínez-Escribano, Francisco Moreno, Marcos Pérez‐López, Cristina Cunha-Pérez, Ángel Belenguer‐Varea, David Cuesta-Peredó, Francisco Javier Blanco González, Francisco José Tarazona‐Santabalbina,
Background: Malnutrition increases worse outcomes during hospital admission for elective colorectal cancer (CRC) surgery in older adults. Methods: This work was designed an observational, monocentric, case-control study nested in a cohort of patients undergoing elective surgery for CRC disease at the Hospital Universitario de la Ribera (HULR) (Alzira, Valencia, Spain) between 2011 and 2019. The study considered patients with a CONUT score in the range of moderate to severe malnutrition (>4 points), with ...
Tópico(s): Frailty in Older Adults
2022 - Multidisciplinary Digital Publishing Institute | Nutrients
Ana M. Belenguer, Giulio I. Lampronti, David J. Wales, Jeremy K. M. Sanders,
We present the first polymorph interconversion study that uses solid-state dynamic covalent chemistry (DCC). This system exhibits unexpected and rich behavior, including the observation that under appropriate conditions the polymorph interconversion of a heterodimer proceeds through reversible covalent chemistry intermediates, and this route is facilitated by one of the two disulfide homodimers involved in the reaction. Furthermore, we demonstrate experimentally that in all cases a dynamic equilibrium ...
Tópico(s): Ionic liquids properties and applications
2014 - American Chemical Society | Journal of the American Chemical Society
G. Ramos, A. Álvarez‐Herrero, Tomás Belenguer, Francisco del Monte, David Lévy,
We report the correction of the shrinkage observed during UV postrecording curing in a holographic solgel material that was recently achieved by the use of various chemical formulations for the composition of the hybrid supporting matrix. We found that a chemical modification of the matrix noticeably attenuates the shrinkage (from 1.3% to 0.4% of the material's initial thickness with the inclusion of just 20% tetramethylorthosilicate), providing a material with improved stability for permanent data ...
Tópico(s): Liquid Crystal Research Advancements
2004 - Optica Publishing Group | Applied Optics
Francisco del Monte, G. Ramos, Tomás Belenguer, David Lévy,
This work describes how the sol-gel process can be a useful approach for the preparation of hybrid materials showing either holographic as well as photorefractive properties. The composition of the holographic and photorefractive materials prepared through the sol-gel approach are completely based on their respective multi-functional polymer analogues, but in the polymer acting as host matrix which is replaced by a nanoporous silica matrix. Such a replacement infers an overall improvement in both ...
Tópico(s): Photonic and Optical Devices
2002 - SPIE | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
Cécile Sauvanet, Laetitia Pelloquin, Claudine David, Pascale Belenguer, Manuel Rojo,
Les mitochondries sont des organites dynamiques qui se déplacent, se divisent et fusionnent continuellement. L'équilibre fusion-fission détermine si elles forment, dans la cellule, des filaments interconnectés ou apparaissent comme une collection de structures ponctiformes indépendantes. Les machineries de fusion et fission sont conservées des levures aux mammifères et comprennent trois GTPases de la famille des dynamines : Dnm1/DRP1 (nomenclature levure/ homme pour dynamin-related protein), impliquée ...
Tópico(s): Metabolism and Genetic Disorders
2010 - EDP Sciences | médecine/sciences
Francisco José Tarazona‐Santabalbina, Ángel Belenguer‐Varea, Eduardo Rovira-Daudi, David Cuesta-Peredó,
Abstract: Hip fractures are a very serious socio-economic problem in western countries. Since the 1950s, orthogeriatric units have introduced improvements in the care of geriatric patients admitted to hospital because of hip fractures. During this period, these units have reduced mean hospital stays, number of complications, and both in-hospital mortality and mortality over the middle term after hospital discharge, along with improvements in the quality of care and a reduction in costs. Likewise, ...
Tópico(s): Frailty in Older Adults
2016 - Dove Medical Press | Clinical Interventions in Aging
María Santos Tomás Belenguer, Marc Fortuny, Concepción Lao Luque, David Gabriel, Javier Lafuente, Xavier Gamisans,
The present study evaluates the technical and economical feasibility of the H2S elimination from an energy-rich gas using a full-scale biotrickling filter installed in a municipal waste water treatment plant. The study analyzes the continuous operation of a 4.5 months period, treating 80 m3 h-1 of biogas with an average H2S concentration of 3000 ppmv. The bioreactor was operated at a gas contact time of 180 seconds and maximum elimination capacities of 170 g H2S m-3 h-1 were obtained without any ...
Tópico(s): Vehicle emissions and performance
2009 - UWA Publishing | Water Practice & Technology
Pavel Cheben, Francisco del Monte, David Lévy, T. Belenguer, A. Núñez,
The silica gel-methyl methacrylate organically modified ceramic is proposed for recording of volume holograms. Both low-spatial-frequency (54 line pairs/mm(-1)) and high-spatial-frequency (1400 line pairs/mm(-1)) holographic gratings were successfully recorded in the medium by interference of two coherent beams of 351.1-nm wavelength. High diffraction efficiencies (93%) and extremely low absorption and scattering coefficients were measured during the holographic reconstruction by a 632.8-nm He-Ne beam. ...
Tópico(s): Photonic and Optical Devices
1996 - Optica Publishing Group | Optics Letters
Pablo G. Toral, Gonzalo Hervás, David Carreño, Álvaro Belenguer, Pilar Frutos,
The direct comparison between milk fat depression (MFD) caused by the addition of trans-10 cis-12 18:2 (a conjugated linoleic acid – CLA – isomer) or marine lipids to the diet of dairy ewes may help to elucidate the origin of this syndrome. Therefore, 12 lactating sheep were divided in 3 lots and offered a diet without supplementation (control) or supplemented with 2% DM of fish oil (FO) or 1.1% DM of a rumen-protected product rich in trans-10 cis-12 18:2 (CLA) for 27 days to compare the responses in terms ...
Tópico(s): Ruminant Nutrition and Digestive Physiology
2015 - Elsevier BV | Animal Feed Science and Technology
Marcos Zayat, Rosario Pardo, Erick Castellón, Leonardo A. B. Tôrres, David Almendro, Pilar García Parejo, A. Álvarez‐Herrero, Tomás Belenguer, S. Garcı́a-Revilla, R. Balda, J. Fernández, David Lévy,
Abstract Although there are excellent contributions in the scientific literature covering most aspects of sol‐gel hybrid materials for optics and electro‐optics, this short review shall concentrate on the research activities of the Sol‐Gel Group (SGG) at Madrid in this field, describing recent progress and interdisciplinary approaches to materials with novel properties.
Tópico(s): Luminescence and Fluorescent Materials
2011 - | Advanced Materials
Álvaro Belenguer, Gonzalo Hervás, David R. Yáñez-Ruíz, Pablo G. Toral, Carlos Ezquerro, Pilar Frutos,
Intoxication of grazing cattle occurs repeatedly when they consume large amounts of young oak leaves (OL), which are rich in hydrolysable tannins (HT), due to a shortage of other feed resources. The HT are antimicrobial, although some rumen bacteria can resist or degrade them into potentially toxic or harmless metabolites. To study the effect of the administration of HT-rich OL (Quercus pyrenaica) after a severe feed restriction on the rumen bacterial community and monitor the variations in some bacterial ...
Tópico(s): Plant Toxicity and Pharmacological Properties
2010 - CSIRO Publishing | Animal Production Science
Francisco José Tarazona‐Santabalbina, Ángel Belenguer‐Varea, Eduardo Rovira Daudí, Enmanuel Salcedo Mahiques, David Cuesta-Peredó, Juan Ramón Doménech‐Pascual, Homero Gac Espínola, Juan Antonio Avellana Zaragoza,
Aim To identify how the severity of dementia influences functional recovery and mortality in elderly patients hospitalized for hip fracture. Methods An observational retrospective study of 1258 patients aged older than 69 years and diagnosed with hip fracture who received care within an orthogeriatrics unit from 2004 to 2008 was carried out. During a 12‐month follow‐up period, functional recovery and mortality outcomes were measured. Results Dementia was present in 383 (28.1%) patients: it was mild ...
Tópico(s): Cardiac, Anesthesia and Surgical Outcomes
2014 - Wiley | Geriatrics and gerontology international/Geriatrics & gerontology international
Francisco José Tarazona‐Santabalbina, Ángel Belenguer‐Varea, Eduardo Rovira-Daudi, Enmanuel Salcedo-Mahiques, David Cuesta-Peredó, Juan Ramón Doménech‐Pascual, María Isabel Salvador-Pérez, Juan Antonio Avellana-Zaragoza,
Hip fractures are associated with high levels of co-morbidity and mortality. Orthogeriatric units have been shown to be effective with respect to functional recovery and mortality reduction. The aim of this study is to document the natural history of early multidisciplinary intervention in elderly patients with hip fractures and to establish the prognostic factors of mortality and walking ability after discharge.This observational, retrospective study was performed in an orthogeriatric care unit ...
Tópico(s): Pelvic and Acetabular Injuries
2012 - Elsevier BV | Clinics
José Antonio González‐Calero, David Arnau, Belén Laserna-Belenguer,
Tópico(s): Writing and Handwriting Education
2015 - Springer Science+Business Media | Educational Studies in Mathematics
Francisco José Tarazona‐Santabalbina, Ángel Belenguer‐Varea, J. R. Doménech Pascual, Homero Gac Espínola, David Cuesta-Peredó, Lara Domínguez, M.a I. Salvador Pérez, Juan Antonio Avellana Zaragoza,
Introduction: comprehensive geriatric assessment includes examination of the nutritional status given the high prevalence of hyponutrition in this kind of patients, particularly in patients with associated cognitive impair- ment. Scales for screening the nutritional status include questions on self-perception difficult to answer by demented elder patients. Objective: To study the specificity, the positive predic- tive value, and the sensitivity of the MNA scale to detect malnutrition in patients ...
Tópico(s): Aging, Health, and Disability
2009 - Arán Ediciones | Nutrición Hospitalaria
Álvaro Belenguer, M. Ben Bati, Gonzalo Hervás, Pablo G. Toral, David R. Yáñez-Ruíz, Pilar Frutos,
Oxalic acid (OA) is a secondary compound occurring in a wide range of plants consumed by ruminants, especially in saline lands or in arid and semi-arid regions. However, its impact on the rumen microbial community and its changes over time, as well as the potential consequences on ruminal function, remain unknown. To examine this impact, five ewes fitted with a ruminal cannula and fed low-quality grass hay were dosed daily with 0.6 mmol of OA/kg body weight through the cannula for 14 days. On days ...
Tópico(s): Plant Toxicity and Pharmacological Properties
2013 - Elsevier BV | animal
Pablo G. Toral, Gonzalo Hervás, David Carreño, Heidi Leskinen, Álvaro Belenguer, K.J. Shingfield, Pilar Frutos,
The modulation of milk fat nutritional quality through fish oil supplementation seems to be largely explained by the action of n-3 very long chain polyunsaturated fatty acids (PUFA) on ruminal biohydrogenation (BH) of C18 fatty acids (FA). However, relationships among this action, disappearance of those PUFA in the rumen, and potential detrimental consequences on ruminal fermentation remain uncertain. This study compared the effect of 20:5n-3 (eicosapentaenoic acid; EPA), 22:5n-3 (docosapentaenoic acid; ...
Tópico(s): Fatty Acid Research and Health
2017 - Elsevier BV | Journal of Dairy Science
Joan Puig‐Barberà, Javier Díez‐Domingo, Ángel Belenguer‐Varea, Germán Schwarz Chavarri, José Antonio Lluch Rodrigo, Santiago Pérez‐Hoyos, David González Vidal,
Annual circulation of influenza virus coincides with a peak in cardiovascular and pneumonia mortality/morbidity. This study aimed to determine the effectiveness of MF59™-adjuvanted subunit influenza vaccine in preventing hospitalisation due to acute coronary syndrome (ACS), cerebrovascular accident (CVA) and pneumonia in the elderly. Three case–control studies were performed during the 2004–2005 influenza season in three health districts in Valencia, Spain (total elderly [>64 years of age] population: ...
Tópico(s): Viral Infections and Immunology Research
2007 - Elsevier BV | Vaccine
Kunwar Jung‐KC, Alba Tristán‐Noguero, Altanchimeg Altankhuyag, David Piñol Belenguer, Karina S. Prestegård, Irene Fernández‐Carasa, Arianna Colini Baldeschi, María Sigatulina Bondarenko, Ángeles García‐Cazorla, Antonella Consiglio, Aurora Martı́nez,
Abstract Proteostatic regulation of tyrosine hydroxylase (TH), the rate‐limiting enzyme in dopamine biosynthesis, is crucial for maintaining proper brain neurotransmitter homeostasis. Variants of the TH gene are associated with tyrosine hydroxylase deficiency (THD), a rare disorder with a wide phenotypic spectrum and variable response to treatment, which affects protein stability and may lead to accelerated degradation, loss of TH function and catecholamine deficiency. In this study, we investigated ...
Tópico(s): Diet and metabolism studies
2024 - Springer Science+Business Media | Journal of Inherited Metabolic Disease
G. Ramos, Tomás Belenguer, Eusebio Bernabéu, Francisco del Monte, David Lévy,
In this work, we describe the preparation of a novel photoconductive sol−gel material based on an organic/inorganic interpenetrating network (IPN). The composition of the sol−gel photoconductive material mimics the well-known polymeric one based on poly(N-vinylcarbazole) (PVK) as the charge-transporting matrix and 2,4,7-trinitro-9-fluorenone (TNF) as the sensitizer. The resulting photoconductive material (PVK/SiO_2 IPN) shows a photosensitivity of 10^-11 cm/(Ω W) in range to that reported for some analogue ...
Tópico(s): Nonlinear Optical Materials Research
2002 - American Chemical Society | The Journal of Physical Chemistry B
H. Guerrero, G. La Rosa, M. P. Morales, Francisco del Monte, E. M. Moreno, David Lévy, R. P. del Real, T. Belenguer, Carlos J. Serna,
Faraday rotation spectrum has been measured at room temperature in a magnetic nanocomposite of γ-Fe2O3/SiO2. The material consists of isolated γ-Fe2O3 nanoparticles dispersed in a silica matrix, and it was prepared through a sol-gel method. The composite contains 18% of γ-Fe2O3 in weight with an average particle size of 20 nm. It has a coercitivity of 30 Oe and an MS of 6 emu/g. The specific Faraday rotation spectrum exhibits a narrow peak centered around 765 nm, reaching a value of 110°/cm and ...
Tópico(s): Liquid Crystal Research Advancements
1997 - American Institute of Physics | Applied Physics Letters
David Cruset, Jaume Vergés, Nuno Rodrigues, Jorge Belenguer, Enric Pascual-Cebrian, Ylènia Almar, Irene Pérez-Cáceres, Chiara Macchiavelli, Anna Travé, Aratz Beranoaguirre, Richard Albert, Axel Gerdes, G. Messager,
We combine structural analysis of fractures with 22 U–Pb dates measured in fracture-filling carbonate cements from bed-parallel fibrous calcite veins (beef), conjugated veins and faults within the Vaca Muerta Formation along the Andean fold and thrust belt in the Neuquén Basin. The measured ages constrain accurately the relationships between overpressures caused by hydrocarbon generation and Andean compression as mechanisms for natural fracturing and vein formation. Two generations of fibres have ...
Tópico(s): Geochemistry and Geologic Mapping
2021 - Elsevier BV | Marine and Petroleum Geology
G. Ramos, A. Álvarez‐Herrero, Tomás Belenguer, David Lévy, Francisco del Monte,
A holographic hybrid sol-gel material with excellent values of diffraction efficiency, index modulation and high photosensitivity (up to 93%, 10 -3 , and 5 x 10 -3 cm 2 /mJ, respectively) is reported. Moroever, a high angular selectivity has been achieved $9 = 0.0967°) through the selection of the adequate nanoporous silica supporting matrix. Such a value has allowed to first demonstrate the capability of angular multiplexing in a holographic sol-gel media (up to five volume holograms with a resultant M/# ...
Tópico(s): Liquid Crystal Research Advancements
2003 - SPIE | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE