bluuebunny/crossref_metadata_2025_split huggingface dataset:
Desvelando el tiempo. Martín Vitaliti y la soledad secuencial
Authors: Tarancón Royo Héctor 
Published: March 2019

<p>Desde su nacimiento, la cultura de masas tuvo una gran aceptación entre el público, pero fue ignorada por los estudios académicos. Vista como algo superficial y alienante para el individuo, movimientos artísticos como el pop o fenómenos culturales como el cómic o las series televisivas, no han sido analizados como elementos formales hasta estas últimas décadas. Disciplinas recientes como los estudios visuales, los estudios culturales, de género, o lingüísticos, al ampliar su objeto de estudio han observado el potencial crítico e ideológico de estas nuevas formas de expresión. De esta manera, desde una aproximación interdisciplinar el presente artículo aborda la obra del artista argentino Martín Vitaliti en relación al superhéroe y su temporalidad épica, el choque entre sus sentimientos y su compromiso y su secuencialidad formal dentro del cómic. Planteado como una historia fragmentada que entrelaza sus estrategias apropiacioncitas de omisión, repetición y distinción, las imágenes quedan abiertas a distintas perspectivas y referencias que la obra de Vitaliti expone y por un momento ayuda a resolver.</p>
Correlato de la figura del observador. Estatuto del mundo en sus fundamentos imaginarios
Authors: De la Villa Liso Lourdes 
Published: March 2019

<p>Este trabajo es un estudio sobre la memoria como dominio específico que surge de un problema perceptivo concreto: el tener acceso al mundo por el canal sensorial de la vista. Le preceden dos estadios de investigación. En este tercer estadio se aborda lo “real” como resultado o solución al problema. La metodología se ha construido a partir de la interpretación del proyecto de fenomenología antropológica de A. Schnell, que propone una definición del hombre como “Homo imaginans”. Se realiza una operación de reflexión con respecto a los resultados que habíamos obtenido hasta ahora. Se formula la vía hacia lo “real” como aquella que resolvería el aparato psíquico movilizado durante el “hacer imágenes”. Se analizan las características y temporalidades de la memoria en su relación con la función visual y la consciencia.</p>
FATORES DE PERTURBAÇÃO IDENTIFICADOS EM ÁREA DE PROTEÇÃO AMBIENTAL CORUMBATAÍ-BOTUCATU-TEJUPÁ, PERÍMETRO BOTUCATU, ESTADO DE SÃO PAULO
Authors: Pollo Ronaldo Alberto , Silva César De Oliveira Ferreira , Cardoso Lincoln Gehring , Lessa Luís Gustavo Frediani 
Published: March 2019

As imagens de satélite de alta resolução espacial se tornaram muito importantes na análise, interpretação e quantificação das transformações ambientais ocorridas ao longo do tempo, permitindo o monitoramento da dinâmica do uso e ocupação do solo, e o monitoramento de áreas protegidas por lei, promovendo instrumentos para um desenvolvimento sustentável, que concilia a produção agrícola e a proteção dos recursos naturais. O presente trabalho é uma análise espacial dos fatores de perturbação e seus potenciais impactos ambientais nos recursos hídricos identificados na Área de Proteção Ambiental (APA) Corumbataí-Botucatu-Tejupá – Perímetro Botucatu-SP em sua porção localizada dentro do município de São Manuel, Estado de São Paulo, por meio de imagens digitais do Google Earth Pro dos anos de 2010 e 2016. Identificou-se oito áreas com fatores de perturbação (A, B, C, D, E, F, G, H) onde foram detectados focos de desmatamento e avanço de pastagem e monoculturas sobre áreas de preservação ambiental, tais como nascentes e locais de potencial recarga de aquífero. Essas ocupações irregulares geram impactos na produção de água, tais como impermeabilização do solo, escoamento superficial e erosão com transporte de sedimentos. Esse procedimento é aplicável à municípios de pequeno e médio porte para detecção e monitoramento de inconformidades ambientais.
Health literacy and use of healthcare services among community-dwelling older adults living with chronic conditions
Authors: Dufour Isabelle , Lacasse Anaϊs , Chouinard Maud-Christine , Chiu Yohann , Lafontaine Sarah 
Published: March 2019

Objective: Only 12% of the Canadian older adults have adequate health literacy (HL) to understand and handle health information sufficiently. A descriptive correlation study was conducted to describe HL and to examine its relationship with healthcare services use among community-dwelling older adults living with chronic conditions in a distant region of Quebec, Canada.Methods: Data was collected through self-report instruments including the Health Literacy Questionnaire (HLQ), which assesses HL on nine dimensions.Results: Based on health characteristics of the nine HLQ dimensions, the results showed significant differences between subgroups of participants as well as a negative association between the HLQ dimension Appraisal of Health Information and the number of consultations with healthcare professionals (incidence rate ratio: 0.66; p = .027).Conclusions: The results highlight the need to improve older adults HL, in order to improve their health status and use of healthcare services.
Effectiveness of Alternative Control Methods for Tithonia diversifolia on Water Yam (Dioscorea alata) Plot
Authors: Olabode O. S. , Ogunsola A. , Oladapo O. S. , Sangodele A. O. 
Published: March 2019

Tithonia diversifolia has become a significant agronomic problem to optimum arable crop production in Nigeria which has necessitated effective and timely control if the good yield is expected on infested soil. This study compared the performance of water yam under different weed control methods on Tithonia infested plot at Ogunba village near Baaya-Oje in Surulere Local Government area of Ogbomoso, Oyo State during the 2015 growing season. Eight (8) control treatments were evaluated namely: Weed control with Atrazine, Diuron, 2 hoe weeding, 3 hoe weeding, Black plastic mulch, grass mulch, Diuron + Atrazine + Plastic mulch (IWM) and unweeded plot. The three (3) hoe weeding and the unweeded plot served as the control treatments. The experiment was laid out in a Randomized complete block design with three replicates. Yam setts were planted at a spacing of 1 m x 1 m to give a population of 10000 plants/ha. Atrazine and Diuron were applied at the rate of 2.5 kg a.i/ha, 2 hoe weeding was done at 3 and 6 weeks after planting (WAP), 3 hoe weeding was done at 3,6 and 9 WAP, while grass mulch was applied at the rate of 5 tons/ha. In IWM, Atrazine and Diuron were applied each at the half recommended rate (1.25 kg/ha) before applying plastic mulch. The treatments were applied pre-emergently on a rain wetted soil after planting. Data were collected on growth and yield parameters of yam as well as on Tithonia weed population and dry matter yield. Results showed that weed control methods significantly (P < 0.05) influenced water yam yield. The highest tuber yield (21 tons/ha) in plastic mulch was comparable to IWM (20 tons/ha), 3 hoe weeding (19 tons/ha) and 2 hoe weeding (18 tons/ha). Grass mulch (16 tons/ha), Diuron (15 tons/ha), Atrazine (14 tons/ha) were also not significantly (P > 0.05) different. Thus, it may be concluded that plastic much is the most efficient of the methods for weed control in yam. The implication of this finding is discussed.
Role of Mesenchymal Stem Cell-Conditioned Medium (MSC-CM) in the Bone Regeneration: A Systematic Review from 2007-2018
Authors: Dilogo Ismail Hadisoebroto , Fiolin Jessica 
Published: March 2019

Background: The therapeutic value of mesenchymal stem cells (MSCs) in tissue engineering and regenerative medicine is attributable in part to paracrine pathways triggered by several secreted factors secreted into culture media. The secreted factor here is known as the conditioned medium (CM) or secretome.
Objectives: This review is aimed to investigate and summarise the in-vitro, pre-clinical in-vivo studies regarding the role of CM-MSC in bone regeneration from 2007 until 2018
Data Sources: A systematic literature search on PubMed, MEDLINE, OVID, Scopus and Cochrane library was carried out by using search terms: Secretome, conditioned medium, mesenchymal stem cell, bone healing, osteogenic, osteogenesis.
Methods: A total of 611 articles were reviewed. Ten articles were identified as relevant for this systematic literature review.
Results: Three tables of studies were constructed for in vitro studies and in-vivo studies.
Conclusion: All of the included in-vitro studies and in-vivo studies have shown a promoting effect of bone regeneration at various stages. Although there are no clinical studies regarding the use of CM-MSC in the human bone regeneration that have been conducted, transplantation of secretome has shown a promising result in the acceleration of bone healing process.
Fiber Reinforced Polymer Nanocomposites for Structural Engineering Applications
Authors: Balasubramaniam Bhuvaneshwari , Sathiyan Govindasamy , Palani Gadyam S. , Iyer Nagesh R. , Gupta Raju Kumar 
Published: March 2019

Abstract
Fiber reinforced polymer (FRP) materials are an important and vibrant structural composite material. FRP comprises of strong and stiff reinforcing fibers embedded in a matrix resin, mainly polymer‐based. A fundamental requirement of engineered structural composites is sufficient strength to support the full superimposed and self‐weight loads. In addition to mechanical properties, structural materials should possess robust physical and in‐service characteristics required to function in aggressive and sometimes hostile environments.
Carbon fiber reinforced polymer (CFRP) composites are increasingly being targeted as replacement of steel and repair materials for concrete structures in civil infrastructure applications. Outstanding performances are noticed when CFRP is used for rehabilitation and strengthening of concrete structures. Further, enhancement of strength and stiffness via simple patching techniques provides additional benefits. Although CFRP composites provide an effective method to strengthen concrete structures, degradation of its performance is unavoidable due to different environmental exposure conditions such as moisture, temperature, and various chemicals atmospheres including chloride, alkaline, and salt water. The greater the degradation of structures, the lower will be their load carrying capacity. Hence, particular focus is on the development of advanced fiber reinforced polymer nanocomposites. This article introduces the effect of FRP nanocompositing and strengthening with epoxies for enhanced durability functions of CFRP in retrofitting/rehabilitation applications.
Regulating Mechanotransduction in Three Dimensions using Sub‐Cellular Scale, Crosslinkable Fibers of Controlled Diameter, Stiffness, and Alignment
Authors: Wang Mingkun , Cui Chunxiao , Ibrahim Mazen Mohamed , Han Biao , Li Qing , Pacifici Maurizio , Lawrence John Todd R. , Han Lin , Han Li‐Hsin 
Published: March 2019

AbstractThe extracellular matrix (ECM) is a complex 3D framework of macromolecules, which regulate cell bioactivity via chemical and physical properties. The ECM's physical properties, including stiffness and physical constraints to cell shape, regulate actomyosin cytoskeleton contractions, which induce signaling cascades influencing gene expression and cell fate. Engineering such bioactivity, a.k.a., mechanotransduction, has been mainly achieved by 2D platforms such as micropatterns. These platforms cause cytoskeletal contractions with apico‐basal polarity and can induce mechanotransduction that is unnatural to most cells in native ECMs. An effective method to engineer mechanotransduction in 3D is needed. This work creates FiberGel, a 3D artificial ECM comprised of sub‐cellular scale fibers. These microfibers can crosslink into defined microstructures with the fibers' diameter, stiffness, and alignment independently tuned. Most importantly, cells are blended amongst the fibers prior to crosslinking, leading to homogeneously cellularized scaffolds. Studies using mesenchymal stem cells showed that the microfibers' diameter, stiffness, and alignment regulate 3D cell shape and the nuclei translocation of transcriptional coactivators YAP/TAZ (yes‐associated protein/transcriptional coactivator), which enables the control of cell differentiation and tissue formation. A novel technology based on repeated stretching and folding is created to synthesize FiberGel. This 3D platform can significantly contribute to mechanotransduction research and applications.
Workplace heat exposure, health protection, and economic impacts: A case study in Canada
Authors: Vanos Jennifer , Vecellio Daniel J. , Kjellstrom Tord 
Published: March 2019

AbstractBackgroundOccupational heat exposure is a serious concern for worker health, productivity, and the economy. Few studies in North America assess how on‐site wet bulb globe temperature (WBGT) levels and guidelines are applied in practice.MethodsWe assessed the use of a WBGT sensor for localized summertime heat exposures experienced by outdoor laborers at an industrial worksite in Ontario, Canada during the warm season (May‐October) from 2012 to 2018 inclusive. We further examined informed decision making, approximated workers’ predicted heat strain (sweat loss, core temperature), and estimated potential financial loss (via hourly wages) due to decreased work allowance in the heat.ResultsSignificantly higher worksite WBGT levels occured compared with regional levels estimated at the airport, with an upward trend in heat warnings over the 7 years and expansion of warnings into the fall season. The maximum WBGT during warnings related strongly to predicted hourly sweat loss. On average, 22 hours per worker were lost each summer (~1% of annual work hours) as a result of taking breaks or stopping due to heat. This amount of time corresponded to an average individual loss of C$1100 Canadian dollars (~C$220,000 combined for ~200 workers) to workers or the company. The additional losses for an enterprise due to reduced product output were not estimated.ConclusionsWorksite observations and actions at the microscale are essential for improving the estimates of health and economic costs of extreme heat to enterprises and society. Providing worksite heat metrics to the employees aids in appropriate decision making and health protection.
Effect of TiO2 on Altering Direction of Interfacial Charge Transfer in a TiO2‐Ag‐MPY‐FePc System by SERS
Authors: Wang Yue , Liu Jing , Ozaki Yukihiro , Xu Zhangrun , Zhao Bing 
Published: March 2019

AbstractInterfacial charge transfer (CT) is of interest owing to its effect on the performance of molecular photovoltaic (PV) devices. The characteristics and structures of interfacial materials, such as TiO2 nanoparticles (NPs) in some solar cells, are employed to adjust the CT process. In this study, three kinds of interfacial systems, including a solar cell‐like TiO2‐Ag‐ p‐mercaptopyridine (MPY)‐ iron phthalocyanine (FePc) system, are compared to investigate the interfacial CT process using surface‐enhanced Raman scattering (SERS) spectroscopy. The SERS results show the significance of TiO2 NPs in the system on altering the direction and path of the interfacial CT, which is closely associated with the CT enhancement contribution to SERS in such an interfacial system. SERS spectroscopy is expected to be a promising technique for the exploration and estimation of the interfacial CT behavior in PV devices, which may further extend the applications of SERS in the field of solar cells.
Understanding the Effect of Polydopamine Interlayer on the Long‐Term Cycling Performance of Silicon Anodes: A Multiphysics‐Based Model Study
Authors: Appiah Williams A. , Kim Dohwan , Song Jihun , Ryou Myung‐Hyun , Lee Yong M. 
Published: March 2019

AbstractTo understand the effect of a polydopamine interlayer between a copper current collector and a silicon composite electrode, a physics‐based model is used to analyze the cycle performance of silicon‐based lithium‐ion half‐cells with bare and polydopamine‐treated copper current collectors. We investigate the capacity‐fading mechanisms of the two cell configurations by analyzing the model parameters that change with cycling. The major capacity‐fading mechanisms in the silicon‐based anodes are the increase in film resistance (solid electrolyte interphase resistance and contact resistance) and the isolation of silicon active material. The polydopamine interlayer reduced the contribution of the film resistance and isolation of the silicon active material to the capacity fade by 22 % and 10 %, respectively. The insulating‐nature of the polydopamine interlayer resulted in an increase in the charge transfer resistance contributing to 15 % reduction in the capacity retention. The efficacy of the physics‐based model is validated with experimental data obtained from silicon‐based half‐cells with bare and polydopamine‐treated copper current collectors.
The mismeasure ofTerrystops: Assessing the psychological and emotional harms of stop and frisk to individuals and communities
Authors: Bandes Susan A. , Pryor Marie , Kerrison Erin M. , Goff Phillip Atiba 
Published: March 2019

AbstractInTerry v. Ohio, the US Supreme Court relied on a balancing test to uphold the reasonableness of the practice known as “stop and frisk,” balancing the contribution of the practice to effective crime prevention and detection against the nature and quality of the intrusion to individual rights. In recent years, statistics have been powerfully deployed by legal scholars, jurists, and policymakers to challenge the assumption that stop and frisk leads to frequent discovery of contraband or other criminal behavior, and to address stark racial and ethnic disparities in the deployment of stop and frisk. However, the other side of theTerryequation—the nature and quality of the intrusion—has received far less attention from the legal community. With few exceptions,Terryjurisprudence portrays theTerryfrisk simply as a brief pat‐down of the outer clothing and treats eachTerrystop as an isolated encounter for purposes of measuring the harm involved. Yet there is a robust social science literature on the effects of stop and frisk on individuals, including data on its effects on individuals from marginalized or vulnerable groups, on individuals over time, and on communities as a whole. Moreover, stop and frisk in the current era has evolved from a tool in the arsenal of individual officers to a systematic, widely deployed strategy. This article argues that the failure to grapple with the application of modern knowledge to modern policing practices leads to a mismeasurement on both sides of theTerryequation. Not only does stop and frisk cause a wide range of emotional and psychological harms; these harms may also interfere with the ability of law enforcement to prevent and investigate crime. Even apart from any legal doctrinal implications for stop and frisk jurisprudence, recognizing the flawed assumptions described in this article should encourage all the relevant stakeholders to re‐evaluate the consequences of theTerryregime.
Manganese‐Catalyzed Transfer Hydrogenation of Aldimines
Authors: Wei Duo , Bruneau‐Voisine Antoine , Dubois Maxime , Bastin Stéphanie , Sortais Jean‐Baptiste 
Published: March 2019

AbstractThe reduction of imines to amines via transfer hydrogenation was achieved promoted by phosphine‐free manganese(I) catalyst. Using isopropanol as reductant, in the presence of tBuOK (4 mol %) and manganese complex [Mn(CO)3Br(κ2N,N‐PyCH2NH2)] (2 mol %), a large variety of aldimines (30 examples) were typically reduced in 3 hours at 80 °C with good to excellent yield.
UF4 and the High‐Pressure Polymorph HP‐UF4
Authors: Scheibe Benjamin , Bruns Jörn , Heymann Gunter , Sachs Malte , Karttunen Antti J. , Pietzonka Clemens , Ivlev Sergei I. , Huppertz Hubert , Kraus Florian 
Published: March 2019

AbstractA laboratory‐scale synthesis of UF4 is presented that utilizes the reduction of UF6 with sulfur in anhydrous hydrogen fluoride. An excess of sulfur can be removed by vacuum sublimation, yielding pure UF4, as shown by powder X‐ray diffraction, micro X‐ray fluorescence analysis, infrared and Raman spectroscopy, as well as magnetic measurements. Furthermore, a single‐crystalline, high‐pressure modification of UF4 was obtained in a multi‐anvil press at elevated temperatures. The high‐pressure polymorph HP‐UF4 was characterized by means of single‐crystal and powder X‐ray diffraction, as well as by magnetic measurements, and presents a novel crystal structure type. Quantum‐chemical calculations show the HP‐modification to be 10 kJ mol−1 per formula unit higher in energy compared to UF4.
The Equatorial Ligand Effect on the Properties and Reactivity of Iron(V) Oxo Intermediates
Authors: Pattanayak Santanu , Cantú Reinhard Fabián G. , Rana Atanu , Gupta Sayam Sen , de Visser Sam P. 
Published: March 2019

AbstractHigh‐valent metal oxo oxidants are common catalytic‐cycle intermediates in enzymes and known to be highly reactive. To understand which features of these oxidants affect their reactivity, a series of biomimetic iron(V) oxo oxidants with peripherally substituted biuret‐modified tetraamido macrocyclic ligands were synthesized and characterized. Major shifts in the UV/Vis absorption as a result of replacing a group in the equatorial plane of the iron(V) oxo species were found. Further characterization by EPR spectroscopy, ESI‐MS, and resonance Raman spectroscopy revealed differences in structure and the electronic configuration of these complexes. A systematic reactivity study with a range of substrates was performed and showed that the reactions are affected by electron‐withdrawing substituents in the equatorial ligand, which enhance the reaction rate by almost 1016 orders of magnitude. Thus, the long‐range electrostatic perturbations have a major influence on the rate constant. Finally, computational studies identified the various electronic contributions to the rate‐determining reaction step and explained how the equatorial ligand periphery affects the properties of the oxidant.
Selenolation of Aryl Iodides and Bromides Enabled by a Bench‐Stable PdIDimer
Authors: Senol Erdem , Scattolin Thomas , Schoenebeck Franziska 
Published: March 2019

AbstractThe use of an air‐ and moisture‐stable dinuclear PdIcomplex as an efficient catalyst for the formation of C(sp2)−SeR bonds is here reported. The privileged reactivity of the PdIdimer allows for the direct use of selenolates as nucleophiles in the cross‐coupling. Although previous methodologies suffer from catalyst poisoning through the formation of Pd‐ate complexes, the mechanistically distinct dinuclear PdIcatalyst circumvents this challenge. A wide variety of aryl bromides and iodides were efficiently coupled under relatively mild reaction conditions with broad functional group tolerance. Mechanistic and computational data are presented in support of direct PdIreactivity.
Electrochemical Oxidative Csp3—H/S—H Cross‐Coupling with Hydrogen Evolution for Synthesis of Tetrasubstituted Olefins
Authors: Lu Fangling , Yang Zengzhuan , Wang Tao , Wang Tianhao , Zhang Yuying , Yuan Yong , Lei Aiwen 
Published: March 2019

Summary of main observation and conclusionTetrasubstituted olefins are significant scaffolds as they are prevalent in many biologically active compounds and versatile building blocks for organic synthesis. Herein, we report an electrochemical oxidative Csp3—H/S—H cross‐coupling reaction, in which various tetrasubstituted olefins were prepared under base‐free, transition metal‐free, and oxidants‐free reaction conditions.