Search results for: D. Luna

Items from 1 to 20 out of 99 results

article

Species richness: A pivotal factor mediating the effects of land use intensification and climate on grassland multifunctionality

L. Allart, B. Dumont, F. Joly, C. Mosnier, more

Journal of Applied Ecology > 61 > 5 > 1053 - 1066

Temperate seminatural grasslands harbour unique biodiversity, support livestock farming through forage production, and deliver many essential ecosystem services (ESs) to human society; they are highly multifunctional. However, temperate grassland ecosystems are also among the most threatened ecosystems on earth due to land use and climate changes. Understanding how biodiversity, climate and land...

article

Clinical predictors of candidemia in medical non‐neutropenic, non‐ICU patients. The CaMed score

María Ruiz‐Ruigómez, Carlos Dueñas, Cristina Hernandez, David Vinuesa, more

International Journal of Clinical Practice > 72 > 12 > n/a - n/a

Introduction Candida species are the leading cause of invasive fungal infections in hospitalised patients and are the fourth most common isolates recovered from patients with bloodstream infection. Few data exist on risk factors for candidemia in non‐ICU patients. We performed a population‐based case‐control study to evaluate the main predictors for candidemia in non‐ICU patients. Methods and findings...

article

A journey into the retina: Müller glia commanding survival and death

Paula V. Subirada, María C. Paz, Magali E. Ridano, Valeria E. Lorenc, more

European Journal of Neuroscience > 47 > 12 > 1429 - 1443

Müller glial cells (MGCs) are known to participate actively in retinal development and to contribute to homoeostasis through many intracellular mechanisms. As there are no homologous cells in other neuronal tissues, it is certain that retinal health depends on MGCs. These macroglial cells are located at the centre of the columnar subunit and have a great ability to interact with neurons, astrocytes,...

article

The reactivation time in the treatment of AMD: a forgotten key parameter?

J. P. Real, J. D Luna, S. D. Palma

Graefe's Archive for Clinical and Experimental Ophthalmology > 2018 > 256 > 6 > 1079-1087

Objective Summarize and compare the available evidence on the reactivation times in patients with age-related macular degeneration treated with Ranibizumab (RNB). Method Systematic review of studies that reported the reactivation time of patients (direct method) or the number of injections received in a certain period of follow-up (indirect method). Results Only 18 of 89 selected studies reported...

article

Stabilizing an amyloidogenic λ6 light chain variable domain

Oscar D. Luna‐Martínez, Alejandra Hernández‐Santoyo, Myriam I. Villalba‐Velázquez, Rosalba Sánchez‐Alcalá, more

The FEBS Journal > 284 > 21 > 3702 - 3717

Light chain amyloidosis is a lethal disease where vital organs are damaged by the fibrillar aggregation of monoclonal light chains. λ6a is an immunoglobulin light chain encoded by the germ‐line gene segment implicated in this disease. AR is a patient‐derived germ‐line variant with a markedly low thermodynamic stability and prone to form fibrils in vitro in less than an hour. Here, we sought to stabilize...

article

Microwave-assisted etherification of glycerol with tert-butyl alcohol over amorphous organosilica-aluminum phosphates

R. Estevez, S. Lopez-Pedrajas, D. Luna, F.M. Bautista

Applied Catalysis B: Environmental > 2017 > 213 > C > 42-52

The synthesis of organosilica-aluminum phosphates by a simple and cheap sol-gel method was carried out with varying amounts of two different silica precursors, 2-(4-chlorosulfonylphenyl)ethyltrimethoxysilane (C) and (3-mercaptopropyl)trimethoxysilane (MPTMS); and several Al/P molar ratios. The solids were calcined in air, at different temperatures. The etherification of glycerol with tert-butyl alcohol...

article

Determination of optical parameters of organic and inorganic thin films using both surface plasmon resonance and Abelès-Brewster methods

Y.M. Espinosa-Sánchez, D. Luna-Moreno, M. Rodríguez-Delgado, A. Sánchez-Álvarez

Optik - International Journal for Light and Electron Optics > 2017 > 142 > C > 426-435

We present two methods to characterize organic and inorganic thin films. The thin films characterization was performed employing an opto-mechanical system, which uses light with p polarization from a He-Ne laser operating at 632.8nm. This system is based on the methods of Abelès-Brewster and surface plasmon resonance in the prism-based Kretschmann configuration. The metallic thin films characterization...

article

IGF-1R Regulates the Extracellular Level of Active MMP-2, Pathological Neovascularization, and Functionality in Retinas of OIR Mouse Model

Valeria E. Lorenc, Paula V. Subirada Caldarone, María C. Paz, Darío G. Ferrer, more

Molecular Neurobiology > 2018 > 55 > 2 > 1123-1135

In ischemic proliferative diseases such as retinopathies, persistent hypoxia leads to the release of numerous neovascular factors that participate in the formation of abnormal vessels and eventually cause blindness. The upregulation and activation of metalloproteinases (MMP-2 and MMP-9) represent a final common pathway in this process. Although many regulators of the neovascular process have been...

article

Visual outcomes in relation to time to treatment in neovascular age‐related macular degeneration

Juan P. Real, Jóse D. Luna

Acta Ophthalmologica > 94 > 8 > e803 - e803

article

Etherification of glycerol with tert-butyl alcohol over sulfonated hybrid silicas

R. Estevez, M.I. López, C. Jiménez-Sanchidrián, D. Luna, more

Applied Catalysis A: General > 2016 > 526 > C > 155-163

The etherification of glycerol with tert-butyl alcohol has been carried out in the liquid-phase on different sulfonic acid functionalized hybrid silicas obtained by oxidative cleavage of tetrasulfide bridges. These materials exhibited different textural properties and acidities ranging from 0.5 to 2.3mmolg⁻¹. First of all, different experimental variables, including the reactant ratio and temperature...

article

Catalytic behaviour of mesoporous metal phosphates in the gas-phase glycerol transformation

S. Lopez-Pedrajas, R. Estevez, R. Navarro, D. Luna, more

Journal of Molecular Catalysis A: Chemical > 2016 > 421 > C > 92-101

The catalytic behaviour of mesoporous simple (M=Al, Fe, Co, Mn) and binary (Al/M; M=Fe,V,Ca; molar ratio Al/Fe=50; Al/V=2; Al/Ca=1) metal phosphates, synthesized by an economical gelation method, in the gas-phase glycerol reaction at temperatures between 220°C and 280°C, has been investigated. The morphology, textural properties and the acidity by pyridine TPD, of the phosphates were also determined...

article

Vanadium oxides supported on amorphous aluminum phosphate: Structural and chemical characterization and catalytic performance in the 2-propanol reaction

F. Blanco-Bonilla, S. Lopez-Pedrajas, D. Luna, J.M. Marinas, more

Journal of Molecular Catalysis A: Chemical > 2016 > 416 > C > 105-116

The synthesis of vanadium oxide systems with V₂O₅ loadings below, above or corresponding to the theoretical monolayer (1–34wt.% of V₂O₅) obtained by impregnation with vanadyl oxalate or vanadyl acetylacetonate of a mesoporous amorphous aluminum phosphate, AlPO₄, calcined at different temperatures (from 350°C to 650°C), has been carried out. Materials were characterized by XRD, Raman, DR UV–vis, ⁵¹...

article

A Schiff base derivative used as sensor of copper through colorimetric and surface plasmon resonance techniques

D. Peralta-Domínguez, M. Rodriguez, G. Ramos-Ortiz, J.L. Maldonado, more

Sensors & Actuators: B. Chemical > 2016 > 225 > Complete > 221-227

Organic molecular sensors have the advantage of being used through easy, fast, economical and reliable optical methods for detecting toxic metal ions in the environment. In this work, we present a simple but highly specific organic ligand 5-Chloro-2-[(1E,2E)-3-(4-(dimethylamino)phenyl)allylidene)amino)]phenol (S1) that works as a colorimetric sensor of copper ions in aqueous solutions. Binding interaction...

chapter

Global Hypothesis Test to Simultaneously Compare the Predictive Values of Two Binary Diagnostic Tests in Paired Designs: a Simulation Study

J. A. Roldán Nofuentes, J. D. Luna Castillo, M. A. Montero Alonso

Proceedings of COMPSTAT'2010 > Selected Contributed Papers > 533-540

The positive and negative predictive values of a binary diagnostic test are measures of the clinical accuracy of the diagnostic that depend on the sensitivity and the specificity of the binary test and on the disease prevalence. Moreover, the positive predictive value and the negative predictive value are not parameters which are independent of each other. In this article, a global hypothesis test...

article

Production of acrolein from glycerol in liquid phase on heterogeneous catalysts

R. Estevez, S. Lopez-Pedrajas, F. Blanco-Bonilla, D. Luna, more

Chemical Engineering Journal > 2015 > 282 > Complete > 179-186

Research has been carried out on the liquid phase dehydration of glycerol to acrolein on mesoporous amorphous aluminum phosphates obtained by a simple ammonia sol–gel method and calcined at 450°C and 650°C as well as on commercial zeolites with different SiO₂/Al₂O₃ ratio and structures (H-ZSM-5 and HY). The acidity of the solids was evaluated by pyridine adsorption (TPD and DRIFT) and also by the...

article

Lens opacity based modelling of the age-related straylight increase

Jos J. Rozema, Victoria Sanchez, Natalia Artal, Ana L. Gramajo, more

Vision Research > 2015 > 117 > C > 25-33

This work studies ethnic and geographical differences in the age-related straylight increase by means of a stochastic model and unpublished lens opacity data of 559 residents of Villa Maria (Argentina), as well as data of 912 Indonesian subjects published previously by Husain et al. For both cohorts the prevalence of each type and grade of lens opacity was determined as a function of age, from which...

article

Virtual instrumentation in LabVIEW for multiple optical characterizations on the same opto-mechanical system

D. Luna-Moreno, Y.M. Espinosa Sánchez, Y.R. Ponce de León, E. Noé Arias, more

Optik - International Journal for Light and Electron Optics > 2015 > 126 > 19 > 1923-1929

In this work we propose a virtual instrumentation, user-friendly, computer-controlled instrumentation and data analysis techniques, allowing an instantaneous comparison between theoretical predictions, simulations and actual experimental results. These applications in LabVIEW programming software show a virtual explosion in data acquisition and control system from the laboratory. We consider a versatile...

article

Distribution functions and statistical parameters that may be used to characterize limb sounders gravity wave climatologies in the stratosphere

P. Alexander, D. Luna, A. de la Torre, T. Schmidt

Advances in Space Research > 2015 > 56 > 4 > 619-633

The number of gravity wave (GW) activity climatologies in the stratosphere started to increase more than 10years ago since the appearance of large amounts of limb and nadir satellite sounders data. There have been very few discussions regarding the adequate statistical description of GW activity in terms of a distribution function and its parameters. We put forward the question whether a general statistical...

article

Trends in the dispensation of antidepressant drugs over the past decade (2000–2010) in Andalusia, Spain

M. C. González-López, C. M. Rodríguez-López, T. Parrón-Carreño, J. D. Luna, more

Social Psychiatry and Psychiatric Epidemiology > 2015 > 50 > 5 > 705-712

Purpose To study antidepressant drug dispensation in the Spanish region of Andalusia and in the Almeria Health Area (AHA) over the past decade, analyzing the variability, trends, and influential factors. Methods We conducted an observational ecological study of antidepressant drug dispensation between 2000 and 2010 in Andalusia. Dispensation was measured as Defined Daily Dose (DDD) per...

article

Rate of vision loss in neovascular age-related macular degeneration explored

Juan P. Real, Gladys E. Granero, Mariana O. Santis, Claudio P. Juarez, more

Graefe's Archive for Clinical and Experimental Ophthalmology > 2015 > 253 > 11 > 1859-1865

Purpose To explore decline in visual acuity in patients with neovascular age-related macular degeneration (n-AMD) awaiting intravitreal bevacizumab or ranibizumab treatment following initial diagnosis and after disease reactivation. Methods Retrospective analysis of 74 treatment-naïve patients (84 eyes) in two centers in Córdoba, Argentina. The time between treatment indication and intravitreal...

Publication date

Last year (1)
Last 3 years (1)

Close

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

From:

To:
Set your own date range

INFONA - science communication portal

Search results for: D. Luna

Species richness: A pivotal factor mediating the effects of land use intensification and climate on grassland multifunctionality

Clinical predictors of candidemia in medical non‐neutropenic, non‐ICU patients. The CaMed score

A journey into the retina: Müller glia commanding survival and death

The reactivation time in the treatment of AMD: a forgotten key parameter?

Stabilizing an amyloidogenic λ6 light chain variable domain

Microwave-assisted etherification of glycerol with tert-butyl alcohol over amorphous organosilica-aluminum phosphates

Determination of optical parameters of organic and inorganic thin films using both surface plasmon resonance and Abelès-Brewster methods

IGF-1R Regulates the Extracellular Level of Active MMP-2, Pathological Neovascularization, and Functionality in Retinas of OIR Mouse Model

Visual outcomes in relation to time to treatment in neovascular age‐related macular degeneration

Etherification of glycerol with tert-butyl alcohol over sulfonated hybrid silicas

Catalytic behaviour of mesoporous metal phosphates in the gas-phase glycerol transformation

Vanadium oxides supported on amorphous aluminum phosphate: Structural and chemical characterization and catalytic performance in the 2-propanol reaction

A Schiff base derivative used as sensor of copper through colorimetric and surface plasmon resonance techniques

Global Hypothesis Test to Simultaneously Compare the Predictive Values of Two Binary Diagnostic Tests in Paired Designs: a Simulation Study

Production of acrolein from glycerol in liquid phase on heterogeneous catalysts

Lens opacity based modelling of the age-related straylight increase

Virtual instrumentation in LabVIEW for multiple optical characterizations on the same opto-mechanical system

Distribution functions and statistical parameters that may be used to characterize limb sounders gravity wave climatologies in the stratosphere

Trends in the dispensation of antidepressant drugs over the past decade (2000–2010) in Andalusia, Spain

Rate of vision loss in neovascular age-related macular degeneration explored

Filter options

Publication date

Content availability

Publication type

Publication language

Keywords

Data set

Journal

INFONA - science communication portal

Search results for: D. Luna

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Content availability

Publication type

Publication language

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options