bluuebunny/crossref_metadata_2025_split huggingface dataset:
Percepção de enfermeiras obstetras sobre o modelo e prática assistencial em uma maternidade filantrópica
Authors: Amorim Torcata , Araújo Aline Carolina Marques , Guimarães Eliane Marina Palhares , Diniz Solange Clessêncio Ferreira , Gandra Helen Martins , Cândido Maria Cecília Rodrigues Macedo 
Published: November 2020

Objetivo: conhecer a percepção de enfermeiras obstetras sobre o modelo e prática assistencial em uma maternidade filantrópica. Método: estudo qualitativo com 13 enfermeiras obstetras que trabalham em uma maternidade mineira, coleta de dados de setembro de 2015 a fevereiro de 2016 por meio de entrevista semiestruturada, utilizando-se Análise de Conteúdo. Resultados: emergiram com categorias: Atuação pautada na humanização e nas boas práticas; Autonomia para atuar; Profissional de referência para tomada de decisões; Atuação em equipe e Modelo de atuação. Discussão: verificou-se que as enfermeiras atuam com autonomia em equipe, não nomeiam um modelo de assistência e apontam a demanda de serviço e o modelo tecnocrático como dificultadores. Considerações finais: apoio e suporte dos gestores são importantes para a atuação das profissionais, contribuindo para um trabalho autônomo. Apesar dos avanços, ainda há desafios a serem superados tanto no âmbito da equipe e comunicação, quanto do suporte dos gestores.
Estresse psicossocial e resiliência: um estudo em profissionais da enfermagem
Authors: Macedo Andréia Barcellos Teixeira , Antoniolli Liliana , Dornelles Thayane Martins , Hansel Leandro Augusto , Tavares Juliana Petri , Souza Sonia Beatriz Cocaro de 
Published: November 2020

Objetivo: verificar presença de estresse psicossocial e escores de resiliência nos profissionais da enfermagem que cuidam de adultos com germes multirresistentes. Método: estudo transversal, realizado em uma unidade de internação para adultos, em um hospital universitário. A amostra foi intencional, composta por 39 profissionais da enfermagem, com dados coletados de janeiro a maio de 2014 por meio dos questionários Desequilíbrio Esforço-Recompensa e Escore de Resiliência. Resultados: a média de idade foi de 39,2±9,0 anos. Observou-se que 69,23% (27) dos profissionais apresentaram elevado estresse psicossocial e 56,41% (22) baixa resiliência. A correlação entre o estresse psicossocial e a resiliência foi de r= 0,3 (p= 0,001). Conclusão: identificou-se elevado percentual de profissionais com estresse psicossocial e com baixa resiliência, indicando risco de adoecimento psicoemocional e físico. Este resultado reforça a importância de revisar a organização do trabalho, estimulando a implementação de programas para aumento dos escores de resiliência.
Características sociodemográficas e clínicas de adolescentes candidatos à doação de sangue em um hemocentro
Authors: Siqueira Fernanda Duarte , Girardon-Perlini Nara Marilene Oliveira , Murari Anelise Levay , Coelho Carla Tatiana dos Santos , Carneiro Lauvir Freitas 
Published: November 2020

Objetivo: conhecer as características sociodemográficas e clínicas de adolescentes de 16 e 17 anos candidatos à doação de sangue em um Hemocentro Regional do Estado do Rio Grande do Sul. Método: estudo transversal, descritivo, desenvolvido com base nos registros do banco de dados de um Hemocentro no período de janeiro de 2012 a dezembro de 2016, conforme critério de ampliação de seleção de doadores da Portaria nº 1.353/ 2011. Resultados: o total de candidatos à doação de sangue entre 16 e 17 anos foi de 473 pessoas, com predomínio de candidatos aptos à doação (78,2%), do sexo feminino (57,5%), de cor caucasiana (72,5%), que doavam pela primeira vez (86%) de forma voluntária. Conclusão: a possibilidade de doação de sangue, incluindo os adolescentes, necessita ser amplamente divulgada e ações de marketing e de educação em saúde utilizadas como estratégias para sensibilização, captação e fidelização.
Potencialidades e fragilidades no acesso ao tratamento oncológico: perspectiva de mulheres mastectomizadas
Authors: Manorov Maraisa , Souza Jeane Barros de , Madureira Valéria Silvana Faganello , Reisa Luana 
Published: November 2020

Objetivo: identificar potencialidades e fragilidades na rede de atenção à saúde para o acesso ao tratamento (cirúrgico, quimioterápico e ou radioterápico) de mulheres mastectomizadas. Método: estudo exploratório, descritivo, com abordagem qualitativa, com dez mulheres mastectomizadas. A coleta de dados realizou-se por meio de entrevistas semiestruturadas, analisadas conforme a análise de conteúdo. Resultados: a falta de profissionais qualificados para atender essa demanda e de informações sobre a doença foram citadas como problemas. Como potencialidades as mulheres referiram a oferta do tratamento gratuito pelo Sistema Único de Saúde e o acompanhamento realizado pela equipe multiprofissional. Conclusão: o atendimento dos profissionais e a reconstrução mamária destacaram-se como potencialidades no tratamento oncológico, enquanto a falta de informações e de profissionais qualificados foram fragilidades evidenciadas, cabendo a equipe multiprofissional e gestores reconhecerem as necessidades deste público para qualificação da assistência.
Gerenciamento de enfermagem em sala de vacina: desafios e potencialidades
Authors: Soccol Keity Laís Siepmann , Terra Marlene Gomes , Ribeiro Danilo Bertasso , Pillon Sandra Cristina , Siqueira Daiana Foggiato de , Tisott Zaira Letícia 
Published: November 2020

Objetivo: analisar o gerenciamento de enfermagem em sala de vacina, com ênfase na supervisão, em um município de médio porte de Minas Gerais, Brasil. Método: estudo descritivo, de abordagem qualitativa, tipo estudo de caso único. Os dados foram organizados e analisados por meio da Análise de Conteúdo modalidade temático-categorial. Resultados: os achados foram organizados em duas categorias analíticas: “Fatores intervenientes no gerenciamento em sala de vacina”, abordando desafios para supervisão, necessidade de um instrumento que padronize essa atividade, falta de organização do processo de trabalho e sobrecarga de funções. A segunda categoria: “Potencialidades para o gerenciamento na sala de vacina” aponta como fatores potencializadores a organização do tempo e agenda do enfermeiro e a necessidade de um instrumento que sistematize as atividades de supervisão. Considerações finais: a maioria dos enfermeiros compreendem a importância da supervisão, como ferramenta do gerenciamento, mas não a realizam de forma sistemática.
Análise da distribuição espacial da cobertura vegetal no município de Santa Barbara/PA
Authors: Ribeiro Erick dos Santos , Raad Sayure Mariana , Nascimento Raqueli Solange Corrêa , Reis Nestor Silva dos , Faro Barbara Luzia Santos de Oliveira , Carneiro Francimary da Silva , Santos Jéssica Costa dos 
Published: November 2020

As questões voltadas ao entendimento das alterações ambientais têm despertado forte preocupação da sociedade diante das grandes catástrofes naturais e o empobrecimento dos recursos naturais. Uma ferramenta de relevante importância na detecção, descrição, quantificação e monitoramento de alterações ambientais é o Sistema de Informação Geográfica (SIG), o qual combinado com dados de Sensoriamento Remoto (SR), se torna uma ferramenta de manejo de grande valia para os ecossistemas em geral. A vegetação é um importante indicador geoambiental, pois sofre influência dos fatores climáticos, edafológicos e bióticos. O Índice de Vegetação da Diferença Normalizada tem sido utilizado para estudos referentes à dinâmica da cobertura vegetal e suas características em relação ao comportamento espectral de alvos. Objetivo do presente trabalho foi investigar o comportamento da vegetação na localidade do município de Santa Barbara/PA para interpretação da organização do espaço geográfico e modificações. Foi utilizado imagem do satélite Landsat 8 ETM+ disponibilizada pelo Science for Changing world - USGS data de 06 de julho de 2017 o Datum utilizado foi WGS_1984_UTM_Zona_22 S, os procedimentos foram realizados em ambiente SIG, utilizando o software ArcGis 10.5. Esse método consiste de a vegetação fotossinteticamente ativa estará se utilizando da luz no comprimento de onda compreendido pelo vermelho, mas como não faz uso do infravermelho próximo, estará refletindo-a. Do uso destes parâmetros de reflectância obter-se-á um índice, o NDVI. Os resultados demostram variedade de cobertura vegetal que sofre variação ao logo das rodovias e dinâmica da pratica de agricultura na região.
The nucleotide specificity of succinyl‐CoA synthetase of Plasmodium falciparum is not determined by charged gatekeeper residues alone
Authors: Vashisht Kapil , Singh Pallavi , Verma Sonia , Dixit Rajnikant , Mishra Neelima , Pandey Kailash C. 
Published: November 2020

Substrate specificity of an enzyme is an important characteristic of its mechanism of action. Investigation of the nucleotide specificity of Plasmodium falciparum succinyl‐CoA synthetase (SCS; PfSCS) would provide crucial insights of its substrate recognition. Charged gatekeeper residues have been shown to alter the substrate specificity via electrostatic interactions with approaching substrates. The enzyme kinetics of recombinant PfSCS (wild‐type), generated by refolding of the individual P. falciparum SCSβ and Blastocystis SCSα subunits, demonstrated ADP‐forming activity (KmATP = 48 µm). Further, the introduction of charged gatekeeper residues, either positive (Lys and Lys) or negative (Glu and Asp), resulted in significant reductions in the ATP affinity of PfSCS. It is interesting to note that the recombinant PfSCSβ subunit can be refolded to a functional enzyme conformation using Blastocystis SCSα, indicating the possibility of subunits swapping among different organisms. These results concluded that electrostatic interactions at the gatekeeper region alone are insufficient to alter the substrate specificity of PfSCS, and further structural analysis with a particular focus on binding site architecture is required.
The case of a 30‐year‐old man with subacute gait instability, weakness, and muscle spasms
Authors: Mehta Mitesh P. , Sokol Leonard L. 
Published: November 2020

Case SummaryA 30‐year‐old healthy man presents after a fall with diffuse weakness and pain and recent onset left eye ptosis in the setting of three weeks of progressive bilateral leg weakness, gait instability, and difficulty washing his hair due to upper extremity weakness. He had also developed stiffness in his neck and shoulders and uncontrollable muscle spasms. Exam was notable for ptosis, fatiguing weakness in extremities, increased tone, hyperreflexia with clonus, and spastic gait. A mediastinal mass was found on chest CT (Fig. 1), and biopsy confirmed an invasive thymoma with positive nodes. Serum testing was positive for antibodies to acetylcholine receptors as well as glutamic acid decarboxylase.
When bad gets worse: Negative wording amplifies negative recall in persons with the borderline personality trait
Authors: Maraz Aniko , Nagy Tamás , Ziegler Matthias 
Published: November 2020

SummaryThe emotional valence of memory recall strongly influences the extreme, and often self‐destructive behavioral response. Overall, 4427 people from the community filled out our screening questionnaire, of which 674 (mean age: 32.9 years, 64.7% women) passed the threshold for the likely presence of borderline personality disorder (BPD). Participants watched one of 9 possible video clips differing in valence (positive, negative or neutral). Results indicate support (ß = .151, p < .05) for a negative cognitive tendency in the evaluations proportionate to the severity of BPD but only when the impression is assessed with negatively‐worded items. This effect is detectable regardless of other factors such as negative mood, extremity of the answers or general impression of the character. These effects are unaffected by acute trauma. To conclude, different factors influence the recall of emotional stimuli, depending on the valence of the stimuli and the valence of the rating scale in persons with strong borderline tendencies.
Insights into the In Vitro Formation of Apatite from Mg‐Stabilized Amorphous Calcium Carbonate
Authors: Opitz Phil , Besch Laura , Panthöfer Martin , Kabelitz Anke , Unger Ronald E. , Emmerling Franziska , Mondeshki Mihail , Tremel Wolfgang 
Published: November 2020

AbstractA protein‐free formation of bone‐like apatite from amorphous precursors through ball‐milling is reported. Mg2+ ions are crucial to achieve full amorphization of CaCO3. Mg2+ incorporation generates defects which strongly retard a recrystallization of ball‐milled Mg‐doped amorphous calcium carbonate (BM‐aMCC), which promotes the growth of osteoblastic and endothelial cells in simulated body fluid and has no effect on endothelial cell gene expression. Ex situ snapshots of the processes revealed the reaction mechanisms. For low Mg contents (<30%) a two phase system consisting of Mg‐doped amorphous calcium carbonate (ACC) and calcite “impurities” was formed. For high (>40%) Mg2+ contents, BM‐aMCC follows a different crystallization path via magnesian calcite and monohydrocalcite to aragonite. While pure ACC crystallizes rapidly to calcite in aqueous media, Mg‐doped ACC forms in the presence of phosphate ions bone‐like hydroxycarbonate apatite (dahllite), a carbonate apatite with carbonate substitution in both type A (OH−) and type B (PO43−) sites, which grows on calcite “impurities” via heterogeneous nucleation. This process produces an endotoxin‐free material and makes BM‐aMCC an excellent “ion storage buffer” that promotes cell growth by stimulating cell viability and metabolism with promising applications in the treatment of bone defects and bone degenerative diseases.
Choose Your Own Adventure: Fabrication of Monolithic All‐Perovskite Tandem Photovoltaics
Authors: Moot Taylor , Werner Jérémie , Eperon Giles E. , Zhu Kai , Berry Joseph J. , McGehee Michael D. , Luther Joseph M. 
Published: November 2020

AbstractMetal halide perovskites (MHPs) have transfixed the photovoltaic (PV) community due to their outstanding and tunable optoelectronic properties coupled to demonstrations of high‐power conversion efficiencies (PCE) at a range of bandgaps. This has motivated the field to push perovskites to reach the highest possible performance. One way to increase the efficiency is by fabricating multijunction solar cells, which can split the solar spectrum, reducing thermalization loss. Low‐cost all‐perovskite tandems have a real chance to soon exceed 30% PCE, which could transform the PV industry. Achieving this goal requires the identification of perovskite sub‐cells that are both highly efficient and can be effectively integrated. Herein, it is discussed how to navigate the multiple‐choice adventure in choosing between the myriad of options and considerations present when deciding what perovskite materials, contact layers, and processing tools to use. Some of the potential fabrication pitfalls often encountered in MHP based tandem PVs are highlighted, so that they can hopefully be avoided in the future.
Room‐Temperature Synthesis of 2D Janus Crystals and their Heterostructures
Authors: Trivedi Dipesh B. , Turgut Guven , Qin Ying , Sayyad Mohammed Y. , Hajra Debarati , Howell Madeleine , Liu Lei , Yang Sijie , Patoary Naim Hossain , Li Han , Petrić Marko M. , Meyer Moritz , Kremser Malte , Barbone Matteo , Soavi Giancarlo , Stier Andreas V. , Müller Kai , Yang Shize , Esqueda Ivan Sanchez , Zhuang Houlong , Finley Jonathan J. , Tongay Sefaattin 
Published: November 2020

AbstractJanus crystals represent an exciting class of 2D materials with different atomic species on their upper and lower facets. Theories have predicted that this symmetry breaking induces an electric field and leads to a wealth of novel properties, such as large Rashba spin–orbit coupling and formation of strongly correlated electronic states. Monolayer MoSSe Janus crystals have been synthesized by two methods, via controlled sulfurization of monolayer MoSe2 and via plasma stripping followed thermal annealing of MoS2. However, the high processing temperatures prevent growth of other Janus materials and their heterostructures. Here, a room‐temperature technique for the synthesis of a variety of Janus monolayers with high structural and optical quality is reported. This process involves low‐energy reactive radical precursors, which enables selective removal and replacement of the uppermost chalcogen layer, thus transforming classical transition metal dichalcogenides into a Janus structure. The resulting materials show clear mixed character for their excitonic transitions, and more importantly, the presented room‐temperature method enables the demonstration of first vertical and lateral heterojunctions of 2D Janus TMDs. The results present significant and pioneering advances in the synthesis of new classes of 2D materials, and pave the way for the creation of heterostructures from 2D Janus layers.
Cesium Lead Bromide (CsPbBr3) Thin‐Film‐Based Solid‐State Neutron Detector Developed by a Solution‐Free Sublimation Process
Authors: Fernandez‐Izquierdo Leunam , Reyes‐Banda Martin Gregorio , Mathew Xavier , Chavez‐Urbiola Iker Rodrigo , El Bouanani Lidia , Chang Joseph , Avila‐Avendano Carlos , Mathews Nini Rose , Pintor‐Monroy Maria Isabel , Quevedo‐Lopez Manuel 
Published: November 2020

AbstractThe majority of solid‐state radiation sensors are predominantly single crystals. However, for low‐cost and large‐area device applications, thin films are a better option. The first evidence of neutron detection using a Gallium Oxide/Cesium Lead Bromide (Ga2O3/CsPbBr3) solid‐state diode enabled by an innovative close space sublimation (CSS) method that allows deposition of thick CsPbBr3 films is demonstrated. Furthermore, indirect neutron sensing is achieved using a 10B layer for diodes biased at voltages as low as –5 V, showing the potential for low‐power operation. The neutron response is enabled by the low leakage current (≈10−8 A mm–2), rectification of ≈104, capacitance as low as 15 pF, and fast response of the Ga2O3/CsPbBr3 diode. The superior performance of the CsPbBr3 is due to the phase purity, stoichiometry control, and large single‐grain columnar growth of the films obtained by the CSS method.
Programmable Building Blocks via Internal Stress Engineering for 3D Collective Assembly
Authors: Cho Woongbi , Hahm Dong Yoon , Yim Jae Ha , Lee Jun Hee , Lee Yun Ju , Kim Dong‐Gyun , Kim Yong Seok , Wie Jeong Jae 
Published: November 2020

AbstractThe collective assembly of finite building blocks can induce complicated scaled‐up architecture for structural diversity and multifunctionality. In this study, the concept of 2D to 3D shape morphing via frontal photopolymerization is employed for the rapid and repetitive fabrication of geometrically tailorable building blocks. The photoabsorber generates an internal stress gradient which induces a mismatch of volumetric shrinkage within a photocured monolithic 3D structure. The final 3D curvilinear architecture is investigated through systematic analysis by controlling the spatiotemporal conditions of 3D shape morphing. The spatiotemporal effect consists of pre/postcuring methods and geometry of the 2D patterns inspired by fractal elements including even/odd condition, spirality, and self‐similarity. Finally, the concept of collective assembly is introduced to construct multiple objective architectures. Each morphed structure contributes to the assembly of hierarchical 3D structures as a building block. Inspired by famous architectures, the collective hierarchical 3D structures are demonstrated by replicating the form of certain landmarks. In addition, scaled‐up assembled 3D structure can withstand 150 times of its own weight and can be applied for the frame of electronic devices. The collective assembly of programmable building blocks has the potential for various versatile applications in rapid prototypes of optical metamaterials, antennas, and curved electronic devices.
Enhancement of Solid‐State Reversible Photochromism by Incorporation of Rigid Steric Hindrance Groups
Authors: Yang Yuhui , He Junzhao , He Zhe , Jiang Guohua 
Published: November 2020

AbstractSolid‐state materials with reversible properties are highly attractive, owing to versatile applications in security, sensors, bioimaging, and information storage. Unfortunately, obtaining these materials in the solid state remains a huge challenge. Efficient isomerization usually requires sufficient conformational freedom and cannot be achieved without solvents or matrices. In this study, four structurally simple spiropyran derivatives are prepared that show excellent reversible photochromism under solvent‐free conditions. The large free volumes induced by different rigid aromatic ring groups enable an efficient photoswitching between closed‐ring compounds and their photoisomers. Furthermore, these compounds exhibit mechanochromic properties upon application of a mechanical force. Their color can be maintained for at least 2 days without fading under visible light irradiation at 30 °C, and can be easily erased by heating at 60 °C for 5 min. At least 30 consecutive print–erase cycles can be performed without apparent fatigue. The excellent solid‐state photochromic properties of the present compounds can find application in both UV printing and rewritable paper.
Lewis Acid Catalyzed Reductive Cyclization of 2‐Aryloxybenzaldehydes and 2‐(Arylthio)benzaldehydes to Unsubstituted 9H‐Xanthenes and Thioxanthenes in Diisopropyl Ether
Authors: Verma Shashi Kant , Prajapati Anamika , Saini Manoj Kumar , Basak Ashok K. 
Published: November 2020

AbstractReadily accessible 2‐aryloxybenzaldehydes and 2‐(arylthio)benzaldehydes undergo a sequence of reactions leading to a wide variety of unsubstituted 9H‐xanthenes and thioxanthenes in high yields when heated with a Lewis acid in diisopropyl ether. This reductive cyclization method is compatible with several important functional groups. The method is also applicable for the selective reductive cyclization of the more electron‐rich aryl ring of a 2,6‐bis(aryloxy)benzaldehyde. The key feature of this transformation is the chemoselective reduction of a transient xanthylium ion in the presence of aldehydic group via intermolecular hydride transfer from diisopropyl ether (solvent).magnified image
Electrochemical Capacitors: Performance Metrics and Evaluation by Testing and Analysis
Authors: Zhao Jingyuan , Burke Andrew F. 
Published: November 2020

AbstractElectrochemical capacitors (i.e., supercapacitors) as energy storage technologies have attracted a lot of attention because of the increasing demand for efficient high‐power delivery. Over the past decades, various advanced electrode materials and cell design have been developed to improve the performance of electrochemical capacitors. Hybrid capacitors and pseudocapacitors achieve much higher energy density due to their fast surface redox reactions. However, although all of them can be classified as electrochemical capacitors, different charge storage mechanisms alter their electrochemical characteristics. All the speculation and potential uncertainties, in the absence of standard performance metrics and test method, make it rather challenging to reliably evaluate the performance of various electrochemical systems, which hinder the development of advanced energy storage technologies and make the comparison between different energy storage systems (batteries, electrochemical capacitors, and hybrid devices) not so meaningful. In this regard, the uncertainties related to the performance metrics and evaluation of electrochemical capacitors are summarized and the ways in which the uncertainties can be minimized for both electric double layer capacitors (EDLCs) and hybrid supercapacitors is analyzed. It is hoped this effort will provide an accurate assessment method for determining the device properties to a high level of confidence and promote the standardization process of performance evaluation for the electrochemical energy storage systems.