bluuebunny/crossref_metadata_2025_split huggingface dataset:
PLUS Barrios. Desarrollo de centralidades urbanas a partir de la rehabilitación y regeneración de condominios sociales
Authors: Bertrand Fernández Alejandro 
Published: June 2024

Los modelos de desarrollo urbano tradicionales han demostrado no poder responder adecuadamente a las necesidades de las últimas décadas, dando como resultado, ciudades altamente segregadas y fragmentadas territorialmente. En respuesta a esta situación, las políticas públicas urbanas han experimentado un gran avance en la diversificación de las formas de desarrollo de la ciudad existente. Sin embargo, dado que estas políticas se traducen en intervenciones puntuales y aisladas, no logran generar un desarrollo urbano sostenido y con impactos positivos a nivel de ciudad y barrio.
En este artículo se sostiene que, en la actualidad, la vivienda contiene el potencial de constituir la unidad fundamental de modelos alternativos de desarrollo, teniendo en la regeneración y rehabilitación urbana sus métodos principales. Esta problemática se explora a través de un proyecto de rehabilitación de un conjunto CORVI 1010, el cual se enmarca en un plan de regeneración barrial, considerando su potencial para consolidar nuevas centralidades a partir del desarrollo de barrios.
ciudad de los ancianos.
Authors: Freire Concha Sebastián 
Published: June 2024

El presente artículo presenta los resultados de una tesis de magister cuyo principal objetivo fue investigar la densificación habitacional para adultos mayores con riesgo socioeconómico en Chile, centrándose en su integración y adaptación desde la ciudad hasta la habitación, a través del análisis de sistemas abiertos en la arquitectura. El creciente porcentaje de personas mayores de 65 años en el país, ha llevado a la implementación de programas de cuidados de larga duración por parte del Estado. Para llevarlos a cabo, el Estado se ha vinculado con instituciones privadas, con y sin fines de lucro, dedicadas al cuidado del adulto mayor. Sin embargo, la falta de coordinación con las instituciones sin fines de lucro, ha incrementado el déficit habitacional, lo que se ha visto reflejado en las precarias condiciones habitacionales, en la gran lista de espera para postular a las residencias, el aislamiento, pérdida de identidad e independencia de los residentes.
En respuesta a estas carencias, se propone utilizar críticamente el sistema mat-building, propuesto por Alison Smithson, con el fin de lograr una mayor densificación y flexibilidad, de acuerdo a distintas necesidades, sean estas programáticas, funcionales, de contexto, de presupuesto, constructivas o emocionales, como un modo de superar el déficit habitacional presente en las instituciones sin fines de lucro que albergan a los adultos mayores con riesgo socioeconómico en nuestro país.
A partir de lo concluido en el análisis del sistema de Smithson, se actuará interviniendo el edificio patrimonial correspondiente a la sede central de la Fundación Las Rosas, ubicado en la comuna de Independencia, región Metropolitana. Este monumento histórico de más de 150 años tiene relevancia no solo en su historia y repercusión en la ciudad, sino también en la capacidad de su arquitectura para adaptarse a distintos usos, siendo esta la principal razón de su permanencia.
Evaluación de la vulnerabilidad sísmica de un conjunto histórico urbano.
Authors: Amoruso Giorgia , Palazzi Nuria Chiara 
Published: June 2024

La investigación presentada en el artículo se basa en el análisis de la vulnerabilidad sísmica de los conjuntos urbanos históricos. Estos se consideran sistemas complejos de gran valor material e inmaterial, y cuyo valor patrimonial es mayor que la suma de valores tangibles de los edificios que lo constituyen. Poseen una vulnerabilidad excepcional ante la ocurrencia de eventos sísmicos, pues corren el riesgo de perderse de manera definitiva. El artículo busca responder a la complejidad de estos conjuntos a través de un modelo de evaluación de la vulnerabilidad específico que permita entender su comportamiento, prever y tipificar los daños y traducir estos aprendizajes en insumos valiosos para políticas públicas de prevención y conservación del territorio urbano. Para ello, se trabaja un enfoque interdisciplinario que vincula la ciencia y las herramientas de diagnóstico de la ingeniería con los estudios tipológicos, espaciales y formales propios de la arquitectura.
Suitability of Sprinkler and Drip Irrigation in Transplanted and Direct Seeded Rice (Oryza sativa L.) in Haryana, India
Authors: Ram Mangat , Kamboj B. R. , Sharma Neeraj 
Published: June 2024

On-farm trials on rice crop were conducted at farmer field over a span of three years (2018, 2019 and 2020) to assess the effectiveness of micro-irrigation methods (specifically drip and sprinkler irrigation) on water usage and crop yield in rice cultivation. The aim was to compare these methods with the conventional surface irrigation (flooding) method both in transplanted (manually or mechanically) and direct seeded rice so as to determine the feasibility of micro-irrigation in rice to tackle the problem of groundwater depletion in Haryana. In transplanted rice (TPR), grain yield obtained with drip and sprinkler irrigation was statistically similar to that obtained with conventional method. But the yield of direct seeded rice (DSR) increased significantly (15.1- 21.1% increase) when it was irrigated by drip or sprinkler methods than by conventional method. The yield of DSR was significantly lower than that of TPR when it was irrigated by conventional surface flooding method but the DSR yielded at par with TPR when irrigated by drip or sprinkler method. The grain yield of the crop obtained with drip and sprinkler irrigation was at par, irrespective of the crop establishment techniques. Over the conventional irrigation, the drip and sprinkler irrigation saved 54.4-57.2% and 47.4-49.0% of irrigation water, respectively in TPR whereas the saving of irrigation water over the conventional method in DSR was 52.5-53.9% and 38.3-39.3%, respectively. Irrespective of establishment techniques, the highest water use efficiency was achieved with drip irrigation (6.73-9.46 kg/ha/mm), followed by sprinkler irrigation (5.66-7.85 kg/ha/mm) whereas it was the lowest with the conventional irrigation (3.28-3.55 kg/ha/mm). It is evident from the findings that it is feasible to adopt sprinkler irrigation in rice (both in TPR and DSR) as it saved substantial quantity of irrigation water without any penalty in yield and net profit in TPR and even increased the yield and net profit in DSR over the conventional irrigation method. Therefore, sprinkler irrigation can be an effective strategy to manage the depletion of groundwater in Haryana. On the other hand, the drip irrigation, despite saving more water and being comparable to the sprinkler irrigation in respect of its effect on yield, may not be economically viable due to its higher initial cost.
Phenoxyl Radical–Metal Complexes
Authors: Shimazaki Yuichi 
Published: September 2012

AbstractThe redox chemistry of metal complexes has been widely developed in recent years, affording deep insights into the reaction mechanisms for many useful homogeneous catalytic reactions and enzymatic reactions at the active site of metalloenzymes. During the course of the studies, a large number of novel complexes have been born and well characterized; species formed as a result of redox reactions such as organic and other radicals are especially important not only in inorganic but also in other fields of chemistry.In the early 1990s, it was discovered that the phenoxyl radical can bind with a metal ion as an open‐shell ligand performing a role of an organic radical cofactor in a metalloenzyme, galactose oxidase (GO), which is a single copper oxidase catalyzing two‐electron oxidation of the primary alcohol to the aldehyde. After the discovery of the radical coordination in the active center, many metal?phenoxyl radical complexes have been synthesized and characterized for understanding the detailed mechanism of GO and the properties of the metal complexes with the coordinated phenoxyl radical.This chapter focuses on the synthesis, structures, properties and reactivity of almost all of the metal‐phenoxyl radical complexes. The first few sections describe historical aspects and general properties of the metal‐phenoxyl radical complexes, including a comparison of their properties with those of the high valent metal‐phenolate complexes which are iso‐electronic with the phenoxyl radical complexes. In later sections, the properties of the metal coordinated phenoxyl radical are described in the order of the periodic table.
Colloidal Occlusion Template Method for Micromanufacturing of Omniphobic Surfaces
Authors: Grigoryev Anton , Roiter Yuri , Tokarev Ihor , Luzinov Igor , Minko Sergiy 
Published: September 2012

AbstractAn efficient strategy to produce forests of aligned nanowires and nail‐like micrometer‐sized structures, whose density can be tuned in a broad range, is reported in this study. It relies on a combination of two template‐assisted nanofabrication/patterning methods: electrochemical growth of metal nanowires in nanoporous sacrificial templates and partial masking of a surface with a self‐assembled colloidal monolayer. A great potential of this novel approach, termed here colloidal occlusion template method, is demonstrated on the example of the fabrication of omniphobic surfaces comprised of nickel micronails whose density is varied to approach highest possible contact angles. After chemical modification to reduce their surface tension, these microstructures with reentrant geometry support the non‐wetting Cassie state for both high‐surface‐tension water and low‐surface‐tension hexadecane. In particular, superhydrophobic behavior (contact angles exceeding 150°) is found for water, while oleophobicity (contact angles approaching 110°) is observed for hexadecane. The proposed approach can be exploited for the fabrication of a large variety of supported high‐aspect‐ratio nano/microstructures in applications where a surface density of features has to be several orders of magnitude lower than can be obtained with conventional template methods.
Improving Spin‐Transport by Disorder
Authors: Chadov Stanislav , Kiss Janos , Felser Claudia 
Published: September 2012

AbstractA new scheme dedicated to improving spin‐transport characteristics by applying random disorder as a constructive agent is reported. The approach paves the way for the construction of novel systems with a surprising combination of properties, which are either extremely rare or even entirely absent within the known classes of ordered materials: half‐metals with no net magnetization and magnetic semiconductors. As a real case example for the applicability of the scheme, it is shown that a series of such materials can be derived from the tetragonal Heusler compound Mn3Ga by substituting Mn with a 3d‐transition metal.
The relationship between relative deprivation and adult nutritional status in rural Zambia
Authors: Cole Steven M. 
Published: September 2012

AbstractObjectives:To explore statistically the relationship between adult short‐run nutritional status [body mass index (BMI)] and a measure of relative deprivation [subjective socioeconomic status (SES)] using panel data collected in a developing country where there is a high degree of poverty and a very uneven distribution of income.Methods:Study participants included men and women from a random sample of households located in a rural setting in Zambia. The data were collected during two waves of survey interviews in 2009. A multilevel model was used to estimate the relationship between subjective SES and adult BMI and controlled for individual absolute income as well as other correlates of adult health. The sample size included 254 observations.Results:A positive relationship was established between individual absolute income and adult BMI at the 1% level. A negative and statistically significant association was found at the 1% level between lower subjective SES and adult BMI. Lower perception of place within the socioeconomic hierarchy was on average associated with a 0.44 decrease in adult BMI.Conclusions:This study found that, independent of individual absolute income, lower subjective SES was negatively related with adult BMI in rural Zambia. The result provides evidence that lower perception of place within the local socioeconomic hierarchy matters to health. Future studies should continue exploring the relationship between subjective and objective measures of relative deprivation and health in developing countries, where the bulk of the research focuses on material not relative deprivation as a key determinant of individual health. Am. J. Hum. Biol. 2012. © 2012Wiley Periodicals, Inc.
Is skinfold thickness as good as DXA when measuring adiposity contributions to insulin resistance in adolescents?
Authors: Addo O. Yaw , Pereira Mark A. , Himes John H. 
Published: September 2012

AbstractObjective:We compared adiposity from triceps and subscapular skinfold thickness (SF) with total body fat from dual energy X‐ray absorptiometry (DXA) in their associations with HOMA insulin resistance for a large sample of US adolescents.Methods:We analyzed cross‐sectional data from 1496 adolescents, ages 12.0–17.99 year examined as part of the US national health and nutrition examination survey (NHANES) cycles 2001–04. Data collected included skinfold thicknesses, DXA‐based total body fat (DXF), serum insulin and fasting glucose for homeostasis model assessment of insulin resistance (HOMA‐IR). Regression models adjusting for complex survey design effects and correspondence analyses were used to study associations with HOMA‐IR and concordance between the two measures of adiposity.Results:SF and DXA models had identical precisions for estimating continuous HOMA‐IR, based on bootstrap estimations. For boys, RMSEs = 0.53 (95% CI: 0.49–0.58) and 0.53 (95% CI: 0.48–0.57) for SF and DXA models respectively; and for girls RMSEs were SF = 0.45 (95% CI: 0.41–0.48) and DXA = 0.46 (95% CI: 0.42–0.48). Both adiposity models identified high proportions of the same individuals (positive percent agreement: 80–81%) with exact agreements exceeding 92% for identifying adolescents at elevated risk of IR in both sexes.Conclusions:Triceps and subscapular skinfold thicknesses estimate HOMA‐IR and identify those at highest risk for insulin resistance as well as total body fat from DXA. Skinfold thickness provides an inexpensive and widely applicable measure of fatness that is appropriate for studies of insulin resistance and perhaps other metabolic variables in adolescents. Am. J. Hum. Biol. 2012. © 2012Wiley Periodicals, Inc.
The pupillographic sleepiness test in adults: Effect of age, gender, and time of day on pupillometric variables
Authors: Eggert Torsten , Sauter Cornelia , Popp Roland , Zeitlhofer Josef , Danker‐Hopfe Heidi ,   on behalf of the working group “Vigilance” of the German Society for Sleep Research and Sleep Medicine (DGSM)
Published: September 2012

AbstractObjectives:The Pupillographic Sleepiness Test (PST) measures the level of alertness based on spontaneous oscillations in pupillary size. Reference data are available for male and female adults within the age range 20–60 years. The aim of the present multicenter study was to extend the age range for reference data from 20 to 79 years.Methods:A total of 239 healthy subjects, selected from three different centers (Berlin, Regensburg, and Vienna), were administered the PST. Data were analyzed with respect to possible effects of age, gender, and time of day on the pupillary unrest index (PUI) and the pupil diameter (PD).Results:Reliable data were available in 85.8% of the entire study sample and in 82.4% of elderly subjects (60+ years). Age‐related changes were identified for the PUI and PD. There was no effect of gender on pupillometric variables as revealed by univariate analysis. The PD was found to be smaller in the afternoon compared with the morning. However, if subjects aged 60+ years were excluded from the analyses, the age‐related changes disappeared and a time‐of‐day effect regarding the PUI became apparent.Conclusions:PUI and PD were found to decrease with increasing age. In addition, the present data show that nonreliable PST data occur more frequently in the elderly probably because of dry eyes, inadequate testing conditions, and technical resolution limitations. Thus, the PST results obtained here from elderly subjects are limited and have to be interpreted with caution. Additional research on elderly specific assessment tools is needed. Am. J. Hum. Biol. 2012. © 2012Wiley Periodicals, Inc.
Katalytische selektive Synthese
Authors: Mahatthananchai Jessada , Dumas Aaron M. , Bode Jeffrey W. 
Published: September 2012

AbstractDer Verlauf und das Produkt einer Reaktion lassen sich gezielt über die Katalysatorstruktur steuern, selbst bei nahezu identischen Reaktionsbedingungen. Katalysatorkontrollierte Selektivität ist in der enantioselektiven Synthese gut etabliert, in katalytischen regio‐, chemo‐ und produktselektiven Reaktionen aber wenig verbreitet. Dieser Aufsatz beschreibt, wie eine Ausgangsverbindung lediglich durch die Auswahl des Katalysators selektiv in zwei oder mehr unterschiedliche Produkte umgewandelt werden kann. Wir stellen Beispiele selektiver Katalysen vor und hoffen, dass die bisher erzielten Fortschritte ermutigend für das Gebiet sind. Zugleich wollen auch die noch offenen Fragen beim Entwurf und dem mechanistischen Verständnis selektiver Katalysatoren thematisieren.
Katalytische asymmetrische Halogenfunktionalisierung von Alkenen – eine kritische Betrachtung
Authors: Denmark Scott E. , Kuester William E. , Burk Matthew T. 
Published: September 2012

AbstractObwohl die Halogenierung von Alkenen seit Jahrhunderten bekannt ist, wurden enantioselektive Varianten dieser Reaktion erst vor kurzem entwickelt. Die in den vergangenen drei Jahren beschriebenen katalytischen enantioselektiven Varianten von Halogenfunktionalisierungen mit den vier gängigen Halogenen sind wichtige Durchbrüche, stellen aber erst die Anfänge eines im Entstehen begriffenen Gebiets dar. Dieser Kurzaufsatz bietet eine kritische Betrachtung der Herausforderungen, die mit der Entwicklung allgemein anwendbarer und hoch enantioselektiver Halogenfunktionalisierungen einhergehen. Zudem liegt der Schwerpunkt hier anders als bei früheren Übersichten zu diesem Gebiet darauf, die verschiedenen Katalysearten und Strategien zur asymmetrischen Induktion aufzuzeigen.
Pyrene‐Based Y‐shaped Solid‐State Blue Emitters: Synthesis, Characterization, and Photoluminescence
Authors: Feng Xing , Hu Jian‐Yong , Yi Liu , Seto Nobuyuki , Tao Zhu , Redshaw Carl , Elsegood Mark R. J. , Yamato Takehiko 
Published: September 2012

AbstractA series of pyrene‐based Y‐shaped blue emitters, namely, 7‐tert‐butyl‐1,3‐diarylpyrenes 4 were synthesized by the Suzuki cross‐coupling reaction of 7‐tert‐butyl‐1,3‐dibromopyrene with a variety of p‐substituted phenylboronic acids in good to excellent yields. These compounds were fully characterized by X‐ray crystallography, UV/Vis absorption and fluorescence spectroscopy, DFT calculations, thermogravimetric analysis, and differential scanning calorimetry. Single‐crystal X‐ray analysis revealed that the Y‐shaped arylpyrenes exhibited a low degree of π stacking owing to the steric effect of the bulky tert‐butyl group in the pyrene ring at the 7‐position, and thus, the intermolecular π–π interactions were effectively suppressed in the solid state. Despite the significantly twisted nonplanar structures, these molecules still displayed efficient intramolecular charge‐transfer emissions with clear solvatochromic shifts on increasing solvent polarity. An intriguing fact is that all of these molecules show highly blue emissions with excellent quantum yields in the solid state. Additionally, the two compounds containing the strongest electron‐accepting groups, CN (4d) and CHO (4f), possess high thermal stability, which, together with their excellent solid‐state fluorescence efficiency, makes them promising potential blue emitters in organic light‐emitting device applications.
Multiple Lyapunov Functions with Blending for Induced L2‐norm Control of Switched LPV Systems and its Application to an F‐16 Aircraft Model
Authors: He Xu , Zhao Jun 
Published: September 2012

AbstractThis paper studies the induced L2‐norm problem for switched linear parameter varying (LPV) systems using a blending method. For a switched LPV system where the parameters are grouped into slow‐varying and fast‐varying parameters, the blending method is used to construct blended Lyapunov functions based on the multiple Lyapunov functions conditions in terms of linear matrix inequalities (LMIs). The proposed method is applied to an F‐16 aircraft longitudinal model and the simulation results demonstrate the effectiveness of the approach.
Consensus for Agents with Double Integrator Dynamics in Heterogeneous Networks
Authors: Goldin D. , Raisch J. 
Published: September 2012

AbstractThis paper studies the convergence properties of consensus algorithms for agents with double integrator dynamics communicating over networks modelled by undirected graphs. The positions and velocities of the agents are shared along heterogeneous, i.e. different, undirected communication networks. The main result is that consensus can be achieved, even though the networks along which position and velocity information are shared are different, and not even connected. Insights on the consensus rate are given based only on the topological properties of the network.
Ubiquitin‐Based Probes Prepared by Total Synthesis To Profile the Activity of Deubiquitinating Enzymes
Authors: de Jong Annemieke , Merkx Remco , Berlin Ilana , Rodenko Boris , Wijdeven Ruud H. M. , El Atmioui Dris , Yalçin Zeliha , Robson Craig N. , Neefjes Jacques J. , Ovaa Huib 
Published: September 2012

AbstractEpitope‐tagged active‐site‐directed probes are widely used to visualize the activity of deubiquitinases (DUBs) in cell extracts, to investigate the specificity and potency of small‐molecule DUB inhibitors, and to isolate and identify DUBs by mass spectrometry. With DUBs arising as novel potential drug targets, probes are required that can be produced in sufficient amounts and to meet the specific needs of a given experiment. The established method for the generation of DUB probes makes use of labor‐intensive intein‐based methods that have inherent limitations concerning the incorporation of unnatural amino acids and the amount of material that can be obtained. Here, we describe the total chemical synthesis of active‐site‐directed probes and their application to activity‐based profiling and identification of functional DUBs. This synthetic methodology allowed the easy incorporation of desired tags for specific applications, for example, fluorescent reporters, handles for immunoprecipitation or affinity pull‐down, and cleavable linkers. Additionally, the synthetic method can be scaled up to provide significant amounts of probe. Fluorescent ubiquitin probes allowed faster, in‐gel detection of active DUBs, as compared to (immuno)blotting procedures. A biotinylated probe holding a photocleavable linker enabled the affinity pull‐down and subsequent mild, photorelease of DUBs. Also, DUB activity levels were monitored in response to overexpression or knockdown, and to inhibition by small molecules. Furthermore, fluorescent probes revealed differential DUB activity profiles in a panel of lung and prostate cancer cells.