bluuebunny/crossref_metadata_2025_split huggingface dataset:
Intensão em ingressar no ensino superior: uma análise sob a perspectiva dos valores e dos fatores motivacionais
Authors: Coutinho Fernando Lopes , Leite Ramon Silva , Souza Filho Sebastiao Aleixo 
Published: November 2018

O percentual da população brasileira com ensino superior ainda é baixo, mesmo quando se compara com outros países da América Latina. Assim, compreender as influências e motivações dos alunos do ensino médio para ingressarem no ensino superior se torna relevante. O presente estudo objetivou analisar quais fatores influenciam os alunos do ensino médio no reconhecimento da necessidade de cursar o ensino superior. Buscou-se entender também a influência das condições socioeconômicas e da natureza administrativa das instituições frequentadas pelos alunos (públicas ou privadas) nesta intenção, assim como o papel dos valores pessoais nessa pretensão. A pesquisa, de natureza quantitativa descritiva, baseou-se em uma survey e contou com a participação de 406 alunos regularmente matriculados no terceiro ano do ensino médio. Os dados foram tratados por meio de estatísticas descritivas e testes de comparação de médias entre grupos. Os resultados indicaram que, no reconhecimento da necessidade de ingressarem no ensino superior, os alunos sofrem, individualmente, influência tanto de sua situação socioeconômica, quanto de fatores intrínsecos e extrínsecos, bem como de seus valores individuais e sociais. Observou-se diferenças de valores entre os alunos, de acordo com o tipo de instituição escolar frequentada, inexistindo diferença quando a comparação é feita entre os grupos de pretensão.
Bem-vindos ao espetáculo: sentidos do trabalho para artistas circenses
Authors: Girelli Scheila , Pit Dal Magro Márcia Luiza , Werner Leticia 
Published: November 2018

Esta pesquisa buscou compreender os sentidos atribuídos ao trabalho por artistas circenses. A pesquisa seguiu a abordagem qualitativa, de cunho etnográfico. A observação participante e entrevistas semiestruturadas foram as principais ferramentas de busca de informações. Os artistas circenses se identificam com o trabalho que realizam, especialmente pela possibilidade da itinerância e saber profissional produzido na própria convivência, marcada pelo forte vínculo afetivo. As atividades caracterizam-se pela autonomia, criatividade, liberdade para negociar suas necessidades e participar da tomada de decisões. Por outro lado, o trabalho é realizado informalmente, precarizando o acesso e garantia dos direitos trabalhistas e previdenciários. O circo constitui-se como um espaço de convivência social e laboral, não permitindo uma distinção clara entre tempo livre e de trabalho, relações sociais, profissionais e familiares. Este modo de (con)viver permite, apesar das dificuldades, a perspectiva de, pelo trabalho, dar continuidade à “magia do circo”.
¿Por qué hay canciones que perduran?
Authors: Albisu Barandiaran Josune 
Published: November 2018

El principal objetivo de este artículo es analizar una canción, Txoria txori, para deducir cuales han sido las principales características que la han convertido en “Himno popular”, permitiéndola perdurar en el tiempo. Dentro de las principales características, dos han sido verdaderamente reseñables: por una parte, la plasticidad, y por otra, la sencillez y estructura clara de la canción. Descriptores: canción, Txoria txori, plasticidad, creatividad.
Bailando la diferencia: identidades culturales y música salsa en Barcelona
Authors: Llano Camacho Isabel 
Published: November 2018

En el baile de la salsa hay muchos estilos. En Barcelona, el estilo cubano fue el primero en difundirse a inicios de 1990. Sin embargo, el estilo Los Ángeles comenzó a proliferar desde comienzos de 2000, a la vez que empezó a replicarse el modelo de los congresos de salsa a nivel mundial. La internacionalización del baile de la salsa coincidió con el boom de la inmigración latinoamericana en España, por lo que la emergencia de las primeras escuelas y compañías de baile de salsa dirigidas al público local, a principios del nuevo siglo, ocurrió paralelamente a la apertura de nuevas discotecas de salsa, merengue y bachata dirigidas a los residentes latinoamericanos. Dada la programación de salsa, realizada por las discotecas y salas de baile, sería posible dar por hecho que los latinoamericanos residentes en Barcelona y los autóctonos convergen en estos espacios, sin embargo, la realidad es otra. Considerando el concepto kinetopia, en este artículo aportamos un análisis sobre la oposición de “baile de escuela” y “baile callejero”, que explicaría la segmentación de los espacios de baile de la salsa en Barcelona, más allá de las diferencias culturales.
Determination of 2- and 3-MCPD as well as 2- and 3-MCPD Esters and Glycidyl Esters (GE) in Infant and Adult/Pediatric Nutritional Formula by Gas Chromatography Coupled to Mass Spectrometry Method, First Action 2018.03
Authors: Dubois Mathieu , Empl Anna-Maria , Jaudzems Greg , Basle Quentin , Konings Erik 
Published: November 2018

Abstract
Background: Monochloropropanediol (MCPD) and its fatty acid esters as well as glycidyl fatty acid esters are substances generated during oil refining or food processing. The free form released during digestion, 3-MCPD and glycidol, have shown adverse effects in animal studies. Objective: So far, the available analytical methods have not been validated in a collaborative study for infant and adult nutritional formulas. This manuscript describes a single-laboratory validation method in view of a future multilaboratory validation trial. Methods: The method described is for the direct determination of 2- and 3-MCPD and indirect determination of 2- and 3-MCPD esters and glycidyl esters in infant and adult/pediatric nutritional formulas by GC coupled to MS. Results: The analytical range was found to be 4–2000 μg/kg powder formula and 0.7–333 μg/kg liquid formula for fatty acid esters of MCPD and glycidol, and 2.5–750 μg/kg samples for free MCPD. The recovery rates were within 91–124% for all samples. Repeatability precision was &lt;20% at levels close to the LOQ. Conclusions: The results met the Standard Method Performance Requirements® (SMPR) set by the AOAC Stakeholder Panel on Infant Formula and Adult Nutritionals. Highlights: The AOAC Expert Review Panel approved the present method as AOAC Official First Action 2018.03.
Tracing the Geographical Origin of Roasted and Green Coffee Using Isotope Fingerprints
Authors: Brodie Christopher , Kracht Oliver , Hilkert Andreas 
Published: November 2018

Abstract
Background: Coffee is one of the most popular beverages worldwide, sourced from different geographical regions. To ensure that coffeebeans come from labelled locations, laboratories need an analytical solution that can discriminate geographical origin. Coffee beans have a fingerprint, a unique chemical signature that allows them to be identified: Isotope fingerprints of carbon, nitrogen, sulfur, hydrogen, and oxygen have been reliably used for origin claim verification. Objective: Show that hydrogen and oxygen isotope fingerprints from green and roasted coffee beans can determine the origin of coffee beans. Methods: The coffee beans were initially ground to as fine as possible a powder using a cryo-mill. Following, samples were weighed into tin capsules and introduced to the Thermo Scientific EA IsoLink™ IRMS System via the Thermo Scientific MAS Plus autosampler, where they were pyrolyzed at 1450°C, and converted to H2 and CO for analysis. Results: The hydrogen and oxygen isotope fingerprints of the coffee beans show that they can be clearly differentiated at the continent scale. Conclusions: It is evident that measuring the isotope fingerprint of coffee beans helps support legislation on food integrity and labelling (EC Reg. No. 1169/2011) and product geographical indication/origin (EC Reg. No. 510/2006), therefore protecting consumers and brands. The origin of a coffee bean can be determined using their hydrogen and oxygen isotope fingerprints. Highlights: Hydrogenand oxygen isotope fingerprints can help determine the origin of coffee beans, allowing the label claim to be verified.
Evaluation of a toxoid fusion protein vaccine produced in plants to protect poultry against necrotic enteritis
Authors: Hunter Joseph G , Wilde Shyra , Tafoya Amanda M , Horsman Jamie , Yousif Miranda , Diamos Andrew G , Roland Kenneth L , Mason Hugh S 
Published: November 2018

Background. Necrotic enteritis (NE) is caused by type A strains of the bacterium Clostridium perfringens. Total global economic losses to the poultry industry due to NE is estimated to be over 2 billion dollars annually. Traditionally, NE has been effectively controlled by inclusion of antibiotics in the diet of poultry. However, recent concerns regarding the impact of this practice on increasing antibiotic resistance in human pathogens have led us to consider alternative approaches, such as vaccination, for controlling this disease. NE strains of C. perfringensproduce two major toxins, a-toxin and NetB. Immune responses against either toxin can provide partial protection against NE.
Methods. We have developed a fusion protein combining a non-toxic carboxyl-terminal domain of a-toxin (PlcC) and an attenuated, mutant form of NetB (NetB-W262A) for use as a vaccine antigen to immunize poultry against NE. We utilized a DNA sequence that was codon-optimized for Nicotiana benthamianato enable high levels of expression. The 6-His tagged PlcC-NetB fusion protein was synthesized in N. benthamianausing a geminiviral replicon transient expression system, purified by metal affinity chromatography, and used to immunize broiler birds.
Results. Immunized birds produced a strong serum IgY response against both the plant produced PlcC-NetB protein and against bacterially produced His-PlcC and His-NetB. Immunized birds were significantly protected against a subsequent in-feed challenge with virulent C. perfringenswhen treated with the fusion protein. These results indicate that a plant-produced PlcC-NetB toxoid is a promising vaccine candidate for controlling NE in poultry.
Synthesis of Indicators
Authors: Maggino Filomena 
Published: November 2018

AbstractIndicators developed through the hierarchical design form a complex system. This characteristic may require approaches allowing more concise views to be able to summarize the complexity (synthesis). Synthesis concerns different aspects of the system:synthesis of units (cases, subjects, etc.) with reference to one indicator, which aims at aggregating the individuals' value observed at microlevel; this synthesis should allow the created macro units to be compared (social groups, age groups, geographic areas, and time frame), with reference to the indicators of interest;synthesis of basic indicators, which aims at aggregating the values referring to several indicators for each unit, micro (individual level) or macro (regional, national, and group level). The synthesis may be represented by numerical values or graphical representations.
Adaptive finite‐time formation tracking control for multiple nonholonomic UAV system with uncertainties and quantized input
Authors: Hu Jinglin , Sun Xiuxia , Liu Shuguang , He Lei 
Published: November 2018

SummaryAn adaptive finite‐time formation tracking control approach is proposed for multiple unmanned aerial vehicle (UAV) system with quantized input signals in this paper. The UAVs are described by nonholonomic kinematic model and autopilot model with uncertainties. An enhanced hysteretic quantizer is introduced to avoid chattering, and some restrictions are released by using a new quantization decomposition method. Based on backstepping technique and finite‐time Lyapunov stability theory, the adaptive finite‐time controller is designed for the trajectory tracking of the multi‐UAV formation. The nonholonomic constraints are solved by a transverse function. A transformation is introduced to the control input signals to eliminate the quantization effect. Stability analysis proves that the tracking errors can converge to a small neighborhood of the origin within finite time and all the closed‐loop signals are semiglobally finite‐time bounded. The effectiveness of the proposed control approach is validated by simulation and experiment.
Electrospun Fibrous Architectures for Drug Delivery, Tissue Engineering and Cancer Therapy
Authors: Ding Yaping , Li Wei , Zhang Feng , Liu Zehua , Zanjanizadeh Ezazi Nazanin , Liu Dongfei , Santos Hélder A. 
Published: November 2018

AbstractThe versatile electrospinning technique is recognized as an efficient strategy to deliver active pharmaceutical ingredients and has gained tremendous progress in drug delivery, tissue engineering, cancer therapy, and disease diagnosis. Numerous drug delivery systems fabricated through electrospinning regarding the carrier compositions, drug incorporation techniques, release kinetics, and the subsequent therapeutic efficacy are presented herein. Targeting for distinct applications, the composition of drug carriers vary from natural/synthetic polymers/blends, inorganic materials, and even hybrids. Various drug incorporation approaches through electrospinning are thoroughly discussed with respect to the principles, benefits, and limitations. To meet the various requirements in actual sophisticated in vivo environments and to overcome the limitations of a single carrier system, feasible combinations of multiple drug‐inclusion processes via electrospinning could be employed to achieve programmed, multi‐staged, or stimuli‐triggered release of multiple drugs. The therapeutic efficacy of the designed electrospun drug‐eluting systems is further verified in multiple biomedical applications and is comprehensively overviewed, demonstrating promising potential to address a variety of clinical challenges.
Molecularly‐Engineered, 4D‐Printed Liquid Crystal Elastomer Actuators
Authors: Saed Mohand O. , Ambulo Cedric P. , Kim Hyun , De Rohit , Raval Vyom , Searles Kyle , Siddiqui Danyal A. , Cue John Michael O. , Stefan Mihaela C. , Shankar M. Ravi , Ware Taylor H. 
Published: November 2018

AbstractThree‐dimensional structures that undergo reversible shape changes in response to mild stimuli enable a wide range of smart devices, such as soft robots or implantable medical devices. Herein, a dual thiol‐ene reaction scheme is used to synthesize a class of liquid crystal (LC) elastomers that can be 3D printed into complex shapes and subsequently undergo controlled shape change. Through controlling the phase transition temperature of polymerizable LC inks, morphing 3D structures with tunable actuation temperature (28 ± 2 to 105 ± 1 °C) are fabricated. Finally, multiple LC inks are 3D printed into single structures to allow for the production of untethered, thermo‐responsive structures that sequentially and reversibly undergo multiple shape changes.
Multimodal Cancer Theranosis Using Hyaluronate‐Conjugated Molybdenum Disulfide
Authors: Shin Myeong‐Hwan , Park Eun‐Yeong , Han Seulgi , Jung Ho Sang , Keum Do Hee , Lee Geon‐Hui , Kim Taeyeon , Kim Chulhong , Kim Ki Su , Yun Seok Hyun , Hahn Sei Kwang 
Published: November 2018

AbstractAmong various 2D nanomaterials, molybdenum disulfide (MoS2) exhibits unique visible photoluminescence with high absorption at the near‐infrared (NIR) range. Despite these optical properties, the efforts to use MoS2 nanomaterials for optical imaging and photothermal therapy are hampered by their instability and low intracellular delivery efficiency. Multifunctional MoS2 conjugated with hyaluronate (HA) for cancer theranosis is reported herein. HA facilitates the delivery of MoS2 to tumor cells by the HA‐receptor mediated endocytosis. In BALB/c nude mice inoculated with a colorectal cancer cell line of HCT116, HA‐MoS2 conjugates appear to be accumulated in the primary tumor at a content more than that in the liver and kidney. The disulfide bonding between MoS2 and thiolated HA seems to degrade in the cytoplasm, releasing MoS2 sheets in stacks and enhancing luminescence efficiency. The HA‐MoS2 conjugates are readily detected via photoacoustic imaging as well as upconversion and downconversion fluorescence imaging. With NIR light illumination, HA‐MoS2 conjugates enable highly effective photothermal tumor ablation. All these results confirm the promising potential of HA‐MoS2 conjugates for cancer theranosis.
Nonlithium Metal–Sulfur Batteries: Steps Toward a Leap
Authors: Hong Xiaodong , Mei Jun , Wen Lei , Tong Yueyu , Vasileff Anthony J. , Wang Liqun , Liang Ji , Sun Ziqi , Dou Shi Xue 
Published: November 2018

AbstractPresent mobile devices, transportation tools, and renewable energy technologies are more dependent on newly developed battery chemistries than ever before. Intrinsic properties, such as safety, high energy density, and cheapness, are the main objectives of rechargeable batteries that have driven their overall technological progress over the past several decades. Unfortunately, it is extremely hard to achieve all these merits simultaneously at present. Alternatively, exploration of the most suitable batteries to meet the specific requirements of an individual application tends to be a more reasonable and easier choice now and in the near future. Based on this concept, here, a range of promising alternatives to lithium–sulfur batteries that are constructed with non‐Li metal anodes (e.g., Na, K, Mg, Ca, and Al) and sulfur cathodes are discussed. The systems governed by these new chemistries offer high versatility in meeting the specific requirements of various applications, which is directly linked with the broad choice in battery chemistries, materials, and systems. Herein, the operating principles, materials, and remaining issues for each targeted battery characteristics are comprehensively reviewed. By doing so, it is hoped that their design strategies are illustrated and light is shed on the future exploration of new metal–sulfur batteries and advanced materials.
Pristine or Highly Defective? Understanding the Role of Graphene Structure for Stable Lithium Metal Plating
Authors: Liu Wei , Xia Yuting , Wang Wenwu , Wang Yizhe , Jin Jialun , Chen Yungui , Paek Eunsu , Mitlin David 
Published: November 2018

AbstractThe role of graphene host structure/chemistry in plating–stripping in lithium metal anodes employed for lithium metal batteries is first examined in this study. Structural and chemical defects are bad, since highly defective graphene promotes unstable solid electrolyte interphase (SEI) growth. This consumes the fluoroethylene carbonate (FEC) additive in the carbonate electrolyte and is correlated with rapid decay in Coulombic efficiency (CE) and formation of filament‐like Li dendrites. A unique flow‐aided sonication exfoliation method is employed to synthesize “defect‐free” graphene (df‐G), allowing for a direct performance comparison with conventional reduced graphene oxide (r‐GO). At cycle 1, the r‐GO is better electrochemically wetted by Li than df‐G, indicating that initially it is more lithiophilic. With cycling, the nucleation overpotential with r‐GO becomes higher than with df‐G, indicating less facile plating reactions. The df‐G yields state‐of‐the‐art electrochemical performance, with the post cycled metal surface being relatively smooth and dendrite‐free. Conversely, r‐GO templates have CE rapidly degrade from the onset, with extensive dendrites after cycling. Severe SEI growth and associated FEC depletion with r‐GO are further confirmed by electrochemical impedance analysis and surface science methods. A new design rule is provided for Li metal templates: An ideal host must be noncatalytic toward SEI formation.
Unprecedented Synthesis of Holey 2D Layered Double Hydroxide Nanomesh for Enhanced Oxygen Evolution
Authors: Qin Mingli , Li Shumei , Zhao Yongzhi , Lao Cheng‐Yen , Zhang Zili , Liu Luan , Fang Fei , Wu Haoyang , Jia Baorui , Liu Zhiwei , Wang Wei (Alex) , Liu Ye , Qu Xuanhui 
Published: November 2018

AbstractCreating nanosized pores in 2D materials can increase the edge sites, improve the mass transfer, and contribute to different physical properties, which shows potential applications in many fields including filtration membranes, electronics and energy storage devices, and catalysts. An iconic member of this type of material is porous graphene. Herein, a unique 2D layered double hydroxide (LDH) nanomesh is designed and synthesized as a new class of 2D holey materials. It represents the first case of exfoliation method for preparing 2D holey materials among all published reports. As an oxygen evolution reaction electrocatalyst, the 2D CoCo‐LDH nanomesh has apparently lower onset overpotential (220 mV) than that of compact nanosheets without holes (270 mV) owing to the pores through the plane that offer more highly active edge sites with lower coordination number and promote the mass diffusion. This work opens up a new avenue for designing 2D porous materials for energy conversion and storage.
Decolonizing “Community” in Community Psychology
Authors: Dutta Urmitapa 
Published: November 2018

AbstractThis article endeavors to craft pathways that disrupt dominant modes of knowledge production and imagine nonhierarchical epistemic possibilities in teaching community psychology. The first section of the article discusses how the decolonial turn inspires new ways of advancing the critical social justice agenda of community psychology. Drawing upon decolonial frameworks and allied critical theories, I outline how coloniality is entrenched in the ways we theorize, research, and teach about “communities”—and the importance of decolonizing the construct of community in community psychology. The second section presents three vignettes capturing student responses to endeavors in the classroom to dismantle notions of community‐as‐Other. I interpret these vignettes through a decolonial perspective in order to highlight how colonial discourses of community can be produced and potentially maintained in the classroom context. The third section outlines some pedagogical and curricular recommendations as a possible pathway toward decolonizing notions of community. I conclude with some questions/provocations geared toward advancing decolonial and liberatory praxis in community psychology.
Participatory and Action Research Within and Beyond the Academy: Contesting Racism through Decolonial Praxis and Teaching “Against the Grain”
Authors: Lykes M. Brinton , Lloyd Courtnye R. , Nicholson Karla M. 
Published: November 2018

AbstractThis article focuses on some of the epistemological and activist challenges at the center of a participatory and action research teaching‐learning process developed through a student‐initiated graduate seminar at Boston College, a university in the global North. The course includes participation of students and instructors in a 2.5‐day Undoing Racism™ workshop facilitated by the People's Institute for Survival and Beyond (PISAB), a New Orleans based non‐profit. Authors, who include a university‐based co‐instructor and student and a Collaborative Community Fellow, describe the decolonial, antiracist pedagogy performed in a coteaching‐colearning process “against the grain.” We report participants’ feedback on how this teaching‐learning experience facilitated their understanding of critical reflexivity and its multiple contributions towards designing PAR processes with communities that elicit and value local knowledge toward collaborative activism. We summarize our experiences and challenges in developing decolonial pedagogy within a predominantly White, elite university, and how the course generates a space through which those who have walked this walk together are able to initiate diverse processes that facilitate community‐collaborative knowledge generation and actions toward redressing injustice and inequity through undoing racism.