550 research outputs found
Social Preference of Building Materials: Decision-Making towards Low Carbon Housing Constructions
Material considerations are essential while trying to achieve low energy and carbon constructions.
According to our preliminary findings, decisions regarding materials in new buildings are mostly done by clients or by
self-builders often without the aid of an architect or planner. Therefore, community studies are important to understand
today’s building dynamics. In this exploratory study - carried out in USA and Mexico - we analysed the public’s
preferences for building materials for the exterior of dwellings and the factors that have more influence over their
decisions while choosing the materials. We also studied the update in the subjects’ preference after receiving certain
information concerning the materials. We wanted to know if the environmental factors play an important role in today's
public preference in the building sector and what type of information could greater affect their beliefs. Preliminary
results for Mexico and after a follow up analysis for USA show that acknowledging unfamiliar information (e.g. carbon
emissions or price) might have a greater influence on the public’s update of preference of materials. This could have
implications for the construction market dynamics in the usage promotion of low carbon building materials.
KEYWORDS: Building materials, decision-making, low carbon, social cognitio
Biological activity of Lonchocarpus guaricensis Pittier in the control of larvae of Tuta absoluta (Meyrick)
La actividad biológica de Lonchocarpus
guaricensis Pittier fue evaluada utilizando dos
dosis de Tecnona® en el control de larvas de
Tuta absoluta (Meyrick), Valle de Azapa, Chile,
mediante una pulverización sobre plantas
de tomate cv. Naomi en macetas, ubicadas
aleatoriamente en un invernáculo dentro de
un vivero. Semanas previas a la pulverización,
las macetas se infestaron artificialmente con
adultos del fitófago para obtener larvas en los
foliolos. Los tratamientos evaluados fueron los
siguientes: T1 (0,21 g de IA de L. guaricensis·L-1),
T2 (0,43 g de IA de L. guaricensis·L-1), T3 (control
positivo a base de spinosad 0,048 g de IA·L-1)
y T0 (control negativo a base de agua de pozo).
De acuerdo con el porcentaje de mortalidad
acumulada de larvas contabilizadas a las 24,
48, 120 horas y 9no día post aplicación, no hay
diferencias estadísticas entre los tratamientos
T0 y T1, a su vez, T2 alcanza una media de
53,05% de mortalidad, no diferenciándose de T3
que logra un 73,9%. Se concluye que la dosis
experimental L. guaricensis de 0,43 g de IA∙ L-1
puede constituir una alternativa interesante de
utilizar en el Manejo Integrado de Plagas del
cultivo de tomate en el Valle de Azapa.Biological activity of Lonchocarpus
guaricensis Pittier was evaluated using two
doses of Tecnona® in the control of larvae of
Tuta absoluta (Meyrick), Azapa Valley, Chile,
by a spray on potted tomato plants cv. Naomi,
randomly placed in a greenhouse within a
nursery. Weeks prior to spraying, the pots were
artificially infested with adults of phytophagous
to obtain larvae in the leaflets. The evaluated
treatments were the following ones: T1 (0.21 g
AI of L. guaricensis·L-1), T2 (0.43 g AI of
L. guaricensis·L-1), T3 (positive control based
on spinosad 0.048 g AI·L-1) and T0 (negative
control based on well water). According to
the cumulative mortality percentage of larvae
counted at 24, 48, 120 hours and 9th day post
application, there was no statistical differences
between T0 and T1 treatments, in turn, T2 reaches
an average of 53.05% mortality not differing
from T3 that achieves 73.9%. We conclude
that the experimental dose of L. guaricensis
0.43 g AI∙L- 1 can be an attractive alternative
for use in Integrated Pest Management of the
tomato crop in the Azapa Valley.Fil: Cajias A., Evelyn.
Universidad de Tarapacá (Chile). Facultad de Ciencias Agronómicas. Departamento de Recursos AmbientalesFil: Estefane D., Francisca.
Universidad de Tarapacá (Chile). Facultad de Ciencias Agronómicas. Departamento de Recursos AmbientalesFil: Vargas C., Héctor.
Universidad de Tarapacá (Chile). Facultad de Ciencias Agronómicas. Departamento de Recursos AmbientalesFil: Bobadilla G., Dante.
Universidad de Tarapacá (Chile). Facultad de Ciencias Agronómicas. Departamento de Recursos Ambientale
PMMA-Assisted Plasma Patterning of Graphene
Microelectronic fabrication of Si typically involves high-temperature or high-energy processes. For instance, wafer fabrication, transistor fabrication, and silicidation are all above 500°C. Contrary to that tradition, we believe low-energy processes constitute a better alternative to enable the industrial application of single-molecule devices based on 2D materials. The present work addresses the postsynthesis processing of graphene at unconventional low temperature, low energy, and low pressure in the poly methyl-methacrylate- (PMMA-) assisted transfer of graphene to oxide wafer, in the electron-beam lithography with PMMA, and in the plasma patterning of graphene with a PMMA ribbon mask. During the exposure to the oxygen plasma, unprotected areas of graphene are converted to graphene oxide. The exposure time required to produce the ribbon patterns on graphene is 2 minutes. We produce graphene ribbon patterns with ∼50 nm width and integrate them into solid state and liquid gated transistor devices.)e submitted manuscript has been created by UChicago Argonne, LLC, Operator of Argonne National Laboratory (“Argonne”). Argonne, a U.S. Department of Energy Office of Science laboratory, is operated under Contract DE-AC02-06CH11357. )e U.S. Government retains for itself, and others acting on its behalf, a paid-up nonexclusive, irrevocable worldwide license in said article to reproduce, prepare derivative works, distribute copies to the public, and perform publicly and display publicly, by or on behalf of the government.
Funding text #2
)e Center for Nanoscale Materials was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract DE-AC02-06CH11357. )e authors also acknowledge financial support from Argonne National Laboratory’s Laboratory-Directed Research and Development Strategic Initiative.Revisión por pare
Gestión de la presión de PLV: estudio de su eficacia en términos de recuerdo y reconocimiento
El objetivo principal de este trabajo es aportar conocimiento para la mejora de la
gestión de la publicidad en lugar de venta (PLV). Se ha realizado un experimento en
una librería para analizar el efecto publicitario generado por la PLV en términos
cognitivos. Utilizando carteles como estímulos publicitarios y como variables
dependientes medidas de memoria (recuerdo y reconocimiento), se contrasta la
influencia de un conjunto amplio de variables que influyen en la eficacia cognoscitiva
de la PLV: la presión publicitaria (superficie ocupada por los carteles), el diseño del
cartel (color y mensaje promocional), la notoriedad previa del producto que se
comunica, la afinidad del cliente con el producto y la influencia del entorno en cual se
ubica la PLV. Las conclusiones aportan una guía para la optimización de la eficacia,
en términos de recuerdo y reconocimiento, de las acciones de comunicación en el
punto de venta.The main objective of this work is to contribute knowledge for the improvement of the
management of point-of-sale advertising (POSA). An experiment was carried out in a
library to analyze the advertising effect generated by in-store advertising in cognitive
terms. Using posters as advertising stimuli and as dependent variables measures of
memory (recall and recognition), we contrast the influence of a broad set of variables
that influence the cognitive efficacy of POSA : advertising pressure (area occupied by
posters), design of the poster (color and promotional message), the prior notoriety of
the product being communicated, the customer's affinity with the product and the
influence of the environment in which the POS is located. The conclusions provide a
guide for optimizing the effectiveness, in terms of recall and recognition, of the
communication actions at the point of sale
To , or not to : Recent developments and comparisons of regularization schemes
We give an introduction to several regularization schemes that deal with
ultraviolet and infrared singularities appearing in higher-order computations
in quantum field theories. Comparing the computation of simple quantities in
the various schemes, we point out similarities and differences between them.Comment: 61 pages, 12 figures; version sent to EPJC, references update
A portrait of the immune response to proliferative kidney disease (PKD) in rainbow trout
This work was supported by the European Commission under the Horizon H2020 research and innovation programme (Grant H2020‐634429 ParaFishControl) and by the European Research Council (ERC Consolidator Grant 2016 725061 TEMUBLYM). CB was supported by the SNSF Post‐Doc Mobility grant P400PB_183824.Peer reviewedPublisher PD
Supramolecular bulky phosphines comprising 1,3,5-triaza-7-phosphaadamantane and Zn(salphen)s: structural features and application in hydrosilylation catalysis
International audienceThe use of the commercially available, bifunctional phosphine 1,3,5-triaza-7-phosphaadamantane (abbreviated as PN 3) in conjunction with a series of Zn(salphen) complexes leads to sterically encumbered phosphine ligands as a result of (reversible) coordinative Zn–N interactions. The solid state and solution phase behaviour of these supramolecular ligand systems have been investigated in detail and revealed their stoichiometries in the solid state observed by X-ray crystallography, and those determined in solution by NMR and UV-Vis spectroscopy. Also, upon application of these supramolecular bulky phosphines in hydrosilylation catalysis employing 1-hexene as a substrate, the catalysis data infer the presence of an active Rh species with two coordinated, bulky PN 3 /Zn(salphen) assembly units having a maximum of three Zn(salphen)s associated per PN 3 scaffold, with an excess of bulky phosphines hardly affecting the overall activity
Respuesta al artículo: La concentración de tratamientos puede mejorar los resultados en cirugía compleja del cáncer
Sr. Editor:
Hemos leído con gran interés la editorial de Borras y Guarga1 que creemos expresa el pensamiento de muchos cirujanos de nuestro país^, y con la que coincidimos, al mismo tiempo que quisiéramos hacer una serie de reflexiones constructivas sobre algunos aspectos que no vemos reflejados del todo en la misma.
El que la concentración en determinados procedimientos disminuya la mortalidad1 3, ya es una buena razón por sí misma para plantearse la centralización, a pesar de que no todos los estudios lo demuestran4, pero no nos parece suficiente el solo hecho de que el volumen por sí mismo sea el principal criterio que defina el centro de referencia, ya que se pueden operar muchos casos, a nivel individual o de servicio, pero si los resultados no se auditan, se comparan o se hacen públicos, podemos caer en el error de que cantidad no sea igual a calidad3.
Desde la Sección de Formación de la Asociación Española de Cirujanos http://www.aecirujanos.es pensamos que las unidades de un servicio que pretenda centralizar procedimientos deberían de estar certificadas al igual que sus profesionales, al mismo tiempo que disponer de tecnología puntera e innovadora que ofrezca las mejores oportunidades de tratamiento a nuestros pacientes, y esto sí que sería un requisito básico para que la centralización tuviese un sentido real, además del volumen, porque significa que los resultados de los profesionales y del centro, están auditados y se pueden ..
Actividad biológica de Lonchocarpus guaricensis Pittier en el control de larvas de Tuta absoluta (Meyrick)
Biological activity of Lonchocarpus guaricensis Pittier was evaluated using two doses of Tecnona® in the control of larvae of Tuta absoluta (Meyrick), Azapa Valley, Chile, by a spray on potted tomato plants cv. Naomi, randomly placed in a greenhouse within a nursery. Weeks prior to spraying, the pots were artificially infested with adults of phytophagous to obtain larvae in the leaflets. The evaluated treatments were the following ones: T1 (0.21 g AI of L. guaricensis·L-1), T2 (0.43 g AI of L. guaricensis·L-1), T3 (positive control based on spinosad 0.048 g AI·L-1) and T0 (negative control based on well water). According to the cumulative mortality percentage of larvae counted at 24, 48, 120 hours and 9th day post application, there was no statistical differences between T0 and T1 treatments, in turn, T2 reaches an average of 53.05% mortality not differing from T3 that achieves 73.9%. We conclude that the experimental dose of L. guaricensis 0.43 g AI∙L- 1 can be an attractive alternative for use in Integrated Pest Management of the tomato crop in the Azapa Valley.
La actividad biológica de Lonchocarpus guaricensis Pittier fue evaluada utilizando dos dosis de Tecnona® en el control de larvas de Tuta absoluta (Meyrick), Valle de Azapa, Chile, mediante una pulverización sobre plantas de tomate cv. Naomi en macetas, ubicadas aleatoriamente en un invernáculo dentro de un vivero. Semanas previas a la pulverización, las macetas se infestaron artificialmente con adultos del fitófago para obtener larvas en los foliolos. Los tratamientos evaluados fueron los siguientes: T1 (0,21 g de IA de L. guaricensis·L-1), T2 (0,43 g de IA de L. guaricensis·L-1), T3 (control positivo a base de spinosad 0,048 g de IA·L-1) y T0 (control negativo a base de agua de pozo). De acuerdo con el porcentaje de mortalidad acumulada de larvas contabilizadas a las 24, 48, 120 horas y 9no día post aplicación, no hay diferencias estadísticas entre los tratamientos T0 y T1, a su vez, T2 alcanza una media de 53,05% de mortalidad, no diferenciándose de T3 que logra un 73,9%. Se concluye que la dosis experimental L. guaricensis de 0,43 g de IA∙ L-1 puede constituir una alternativa interesante de utilizar en el Manejo Integrado de Plagas del cultivo de tomate en el Valle de Azapa
Characterization of a new molecule capable of inhibiting several steps of the amyloid cascade in Alzheimer's disease
Introduction: Alzheimer's disease (AD) is the most prevalent neurodegenerative disorder in elderly people. Existent therapies are directed at alleviating some symptoms, but are not effective in altering the course of the disease. Methods: Based on our previous study that showed that an Fiji-interacting small peptide protected against the toxic effects of amyloid-beta peptide (A beta), we carried out an array of in silico, in vitro, and in vivo assays to identify a molecule having neuroprotective properties. Results: In silico studies showed that the molecule, referred to as M30 (2-Octahydroisoquinolin-2(1H)-ylethanamine), was able to interact with the A beta peptide. Additionally, in vitro assays showed that M30 blocked A beta aggregation, association to the plasma membrane, synaptotoxicity, intracellular calcium, and cellular toxicity, while in vivo experiments demonstrated that M30 induced a neuroprotective effect by decreasing the toxicity of A beta in the dentate gyrus of the hippocampus and improving the alteration in spatial memory in behavior assays. Discussion Therefore, we propose that this new small molecule could be a useful candidate for the additional development of a treatment against AD since it appears to block multiple steps in the amyloid cascade. Overall, since there are no drugs that effectively block the progression of AD, this approach represents an innovative strategy. Significance: Currently, there is no effective treatment for AD and the expectations to develop an effective therapy are low. Using in silico, in vitro, and in vivo experiments, we identified a new compound that is able to inhibit A beta-induced neurotoxicity, specifically aggregation, association to neurons, synaptic toxicity, calcium dyshomeostasis and memory impairment induced by A beta. Because A beta toxicity is central to AD progression, the inhibition mediated by this new molecule might be useful as a therapeutic tool
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