bluuebunny/crossref_metadata_2025 huggingface dataset:
Percepción sobre el rol del fonoaudiólogo en el área de motricidad oral en la unidad de cuidados intensivos neonatal
Authors: Alvarado Meza Jimy , Guerra Garcés Shirley Patricia , Marín Reyes Danna Carolina , Ortíz Duarte Leidinys Andrea
Published: April 2021

Introducción: Las acciones terapéuticas del profesional de fonoaudiología, en la unidad de cuidados intensivos neonatal, están definidas por procedimientos de evaluación, diagnóstico y tratamiento de las funciones estomatognáticas u orofaciales. El equipo interdisciplinar de estas unidades, por lo general, no cuenta con la participación del fonoaudiólogo, siendo suplido por otros profesionales que no cuentan con una adecuada técnica terapéutica y sin las competencias para la ejecución de estos procedimientos.Métodos: Investigación aplicada con muestreo aleatorio. La muestra poblacional de estudio corresponde al personal médico vinculado a una unidad de cuidado intensivo. La naturaleza del estudio es cuantitativa, de corte transversal no experimental. Para la recolección de los datos se utilizó una encuesta tipo Likert. Análisis estadístico basado de chi-cuadrado.Resultados: Se destaca la necesidad de un mejor conocimiento del trabajo del fonoaudiólogo en la unidad.Conclusión: Mediante el instrumento aplicado, se pudo identificar la necesidad e importancia del rol de fonoaudiólogo en el equipo interdisciplinario. Se determinó que los médicos generales y nutricionistas son los que menos conocen la labor de este profesional en la unidad.
Características, control de la enfermedad y calidad de vida de los pacientes asignados al ‹‹Programa de Atención al Niño Asmático›› de un centro de atención primaria.
Authors: Barbed Ferrández Sara María , Moneo Hernández María Isabel , Lasarte Velillas Juan José , Ruiz Pardo Andrés
Published: April 2021

Objetivos: Evaluar las características clínicas, el grado de control de la enfermedad y calidad de vida de cuidadores de pacientes y pacientes asignados al «Programa de Atención al Niño Asmático» en un centro de atención primaria. Métodos: Estudio descriptivo observacional, con recolección prospectiva de datos procedentes de 3 cuestionarios estandarizados, entregados al paciente o cuidadores: Asthma Control Questionnaire(ACQ)TM, Paediatric Asthma Quality of Life Questionnaire(PAQLQ)TM y Paediatric Asthma Caregivers Quality of Life Questionnaire(PACQLQ)TM y recolección retrospectiva de datos procedentes de la historia clínica.  La muestra proviene del “Programa de Atención al Niño Asmático” de un centro de salud. Resultados: El 40% de los pacientes presentaban antecedente materno o paterno de asma y el 80% antecedente personal de dermatitis atópica, rinitis alérgica o alergia alimentaria. La media de los resultados de las escalas fue de ACQTM: 0.87 +/- 1.06 puntos (rango 0 – 3.6). Media de resultado PAQLQTM: 6.08 +/- 0.77 (rango 5 – 7).  Media de PACQLQTM: 5.48 +/- 1.06 (rango 3 – 7). En pacientes con ACQTM <0.5 puntos, la media de puntuación en PACQLQTM fue de: 6.30 +/- 0.83. En pacientes con ACQTM >1 fue de: 4.66 +/- 0.72. Conclusiones: La presencia de atopia personal y el antecedente familiar de asma es el factor de riesgo más relacionado con el desarrollo de asma en nuestro estudio. El grado de control de asma en la muestra es mejorable, relacionándose un peor control de la enfermedad con peor puntuación en la escala de calidad de vida, siendo necesario implementar medidas de mejora en el ámbito educativo, clínico y asistencial.
Quiste aracnoideo gigante ¿Debe el pediatra alarmarse? a propósito de un caso asociado hemorragia intraquística espontánea.
Authors: Gutierrez Gaitan Monica Paola , Montoya Andrés , Pinzon-Salamanca Javier-Yesid , Cediel Echeverri Monica , Suescun-Vargas Jose-Miguel
Published: April 2021

Antecedentes: Los quistes aracnoideos son masas benignas, uniloculares, compuestas por membrana colágena, revestida por células aracnoideas, con liquido céfalo-raquídeo en su interior. Reporte de caso: se presenta el caso clínico; niño de 9 años con síntomas de cefalea, náuseas y vómito, con posterior diagnóstico de quiste aracnoideo gigante parieto-temporo-frontal izquierdo, con desplazamiento de línea media hacia la derecha con hemorragia intraquística espontanea documentada por neuroimagen (resonancia magnética cerebral sin contraste), sin presentar cambios comportamentales, convulsiones, o déficit del estado neurológico. Se realiza abordaje quirúrgico con craneotomía y drenaje de colección hemática subdural que comprimía parénquima adyacente con sospecha de fistula de líquido céfalo-raquídeo sin signos de hipertensión endocraneana. Conclusiones: Actualmente se ha incrementado la incidencia de quistes aracnoideos en pacientes pediátricos, siendo evidentes desde el tercer trimestre de gestación, con predominio de frecuencia en hombres y del hemisferio izquierdo. Se realiza un enfoque clínico pediátrico para un adecuado abordaje.
Notes préparatoires à Paroles du Christ
Authors: Henry Michel
Published: April 2021

Cet article présente les notes préparatoires à l’ultime ouvrage de Michel Henry, Paroles du Christ (2002). Ces notes inédites, particulièrement nombreuses, témoignent de la richesse de la lecture henryenne des textes bibliques et surtout ceux du second testament. Elles témoignent du rapport de Michel Henry au christianisme, voire à la théo-logie.
Sens et puissance
Authors: Jean Gégori
Published: April 2021

Paroles du Christ constitue le testament philosophique de Michel Henry. Non seulement parce qu’il s’agit de son dernier livre, mais aussi parce que quelque chose de nouveau et d’ancien affleure, comme une nouvelle perspective sur ce qu’il n’aura cessé d’appeler « la vie ». Après l’exploration systématique de la « vérité du christianisme » dans son opposition à la « vérité du monde », puis de la chair et de l’incarnation dans leur hétérogénéité à l’égard de l’objectivité du corps mondain, Henry aurait ultimement tenté de rejouer la « duplicité de l’apparaître » du point de vue du langage, dans la distinction clairement assumée de la parole de la vie et de la parole du monde. Or il n’en est rien : non seulement parce que cette duplicité du langage traverse tous les textes consacrés par Henry au christianisme et n’a rien d’une problématique « régionale », mais aussi parce que, loin d’en être le point d’arrivée, il constitue sans doute son véritable point de départ.
Notes préparatoires à Incarnation
Authors: Henry Michel
Published: April 2021

Cet article présente des notes inédites de Michel Henry préparatoires à son ouvrage « Incarnation ». Elles donnent de précieux aperçus sur la manière dont Henry concevait l’articulation – profondément nouvelle dans son œuvre – des problématiques de la chair et de l’incarnation et soulignent explicitement les enjeux indissociablement éthiques et sotériologiques.
L’ « Au-delà de l’essence » d’E
Authors: Kobayashi Reiko
Published: April 2021

Cet article examine le rapport entre l’Idée platonicienne du Bien et l’au-delà de l’essence de Levinas.
« Inconscient et refoulement selon la phénoménologie de la vie »
Authors: Proença Nuno Miguel
Published: April 2021

Cette étude met M. Henry en confrontation avec Freud, sur la question de l’inconscient et du refoulement. M. Henry dénonce la tentation idéologique des lectures de la théorie freudienne qui viendraient cacher précisément l’originalité de la pensée de Freud – tentation qui est elle-même liée aux présupposés scientistes de ce dernier –, mais il ne cesse d’affirmer que la psychanalyse « propose une nouvelle conception de la phénoménologie », en ceci qu’elle prône le caractère subjectif et immanent de la vie à l’encontre de l’extériorité du monde. Nuno Miguel Proença situe ainsi d’emblée le lecteur dans ce rapport complexe de M. Henry à Freud.
L' intersubjectivité chez Michel Henry comme passage de l’« égoïté » à la « nostrité »
Authors: Mandiangu Robby
Published: April 2021

C’est à la confrontation entre M. Henry et Husserl sur la question de l’intersubjectivité que s’attache cette contribution. D’après Robby Mandiangu, M. Henry critiquerait la réduction husserlienne d’autrui à un alter ego, c’est-à-dire à un objet posé sous le regard de l’ego transcendantal : un « autre » défini toujours à partir de l’ego. Aux antipodes de toute extase intentionnelle, la notion d’intersubjectivité renvoie chez M. Henry à l’immanence du rapport de la vie à elle-même. Ainsi, l’auteur rappelle que c’est en fonction de ce rapport de tous les vivants au pathos de la Vie que le passage de l’« égoïté » à la « nostrité » peut s’opérer. En revisitant la critique henryenne de l’intersubjectivité intentionnelle dans Phénoménologie matérielle et en la complétant par les analyses sur la philosophie du christianisme dans C’est moi la vérité, Robby Mandiangu retrace le passage d’une « égoïté » à une « nostrité », notamment à partir de l’analyse de la notion de pathos.
Michel Henry lecteur de Nietzsche ou le dépassement de l’hellénisme
Authors: Berthot Clément
Published: April 2021

Cette recherche apporte des repères majeurs pour mieux saisir la place de Nietzsche dans une phénoménologie de la vie, tout en éclairant le rapport des deux philosophes à la Grèce et au christianisme. Si Nietzsche est tout particulièrement l’auteur qui sert de point d’appui à M. Henry pour remettre en question l’approche grecque de la phénoménalité, c’est parce que le philosophe allemand incarne précisément le retour à la Grèce tragique de l’époque archaïque, si bien que l’exception que ce dernier représente dans la philosophie occidentale tient au fait qu’il met en œuvre des présupposés phénoménologiques différents de ceux de la Grèce idéaliste. La référence positive à Nietzsche chez M. Henry est toutefois suivie d’une période dans laquelle M. Henry prendra ses distances avec le philosophe allemand. Certes, ces deux penseurs de la vie consacrent leur dernière philosophie au christianisme, mais ils le font selon des logiques bien différentes.
« L’être rivé à soi » et son intrigue narrative : Levinas et Henry, phénoménologues-romanciers.
Authors: Del Mastro Cesare
Published: April 2021

Un travail de génétique textuelle sur des notes manuscrites inédites révélant la lecture par le jeune M. Henry du Temps et l’autre d’Emmanuel Levinas permet à l’auteur de cet article d’avancer l’hypothèse d’après laquelle le tournant henryen vers l’apparaître immanent et invisible de la subjectivité comme « être acculé à soi » est motivé, entre autres, par sa lecture de cet ouvrage, et notamment par la figure lévinassienne de « l’être rivé à soi ».
Aspectos técnicos dos tratamentos endodônticos realizados por cirurgiões-dentistas da PMESP: avaliação por meio de questionário
Authors: Rosas Cesar Augusto Perini , Bueno Carlos Eduardo da Silveira , Martins Alexandre Sigrist de , Moretto Marcelo Juliano , Fontana Carlos Eduardo
Published: April 2021

Introdução: De todas as especialidades na Odontologia, uma das mais favorecidas nos últimos anos com o desenvolvimento de novas tecnologias tem sido a Endodontia. Objetivo: O presente estudo visou obter informações sobre os aspectos técnicos dos tratamentos endodônticos realizados por cirurgiões-dentistas da Polícia Militar do Estado de São Paulo (PMESP), dando ênfase aos materiais, técnicas e equipamentos empregados. Métodos: Um questionário com 25 questões de múltipla escolha foi enviado aos 147 dentistas da PMESP, e o critério de inclusão foi que os profissionais realizassem tratamentos endodônticos. Resultados: A análise estatística foi feita por meio do teste qui-quadrado, com p<0,05. Entre os 42 profissionais avaliados, 59,5% eram do sexo masculino, o dique de borracha foi utilizado em 54,8% dos casos, o comprimento de trabalho foi obtido por meio de radiografias em 71,4%, o sensor digital foi utilizado em 28,6%, a magnificação visual foi utilizada em 23,8% e a técnica de condensação lateral foi a mais utilizada, com 90,2%. Outra análise foi realizada com 10 especialistas do Centro Odontológico da PMESP que efetuavam unicamente tratamento endodôntico, sendo que 50% eram do sexo masculino e tratavam mais de 15 casos/mês: o dique de borracha foi utilizado em 80% dos casos; o comprimento de trabalho foi obtido com localizador foraminal em 50% dos casos; o sensor digital foi utilizado em 90%, assim como o motor elétrico; a técnica de condensação lateral foi utilizada em 60% dos casos e o ultrassom, em 20%. Conclusões: Conclui-se que os especialistas utilizaram mais as novas tecnologias, e que o ultrassom e a magnificação visual foram pouco utilizados em ambos os grupos.
Avaliação da resistência à fadiga cíclica e torcional de quatro instrumentos rotatórios de NiTi com secções transversais semelhantes e diferentes tratamentos térmicos
Authors: Klymus Michel Espinosa , Alcalde Murilo Priori , Vivan Rodrigo Ricci , Vasconcelos Bruno Carvalho de , Só Marcus Vinícius Reis , Duarte Marco Antonio Hungaro
Published: April 2021

Objetivo: O objetivo do presente trabalho foi avaliar a resistência à fadiga cíclica e torcional de instrumentos rotatórios de níquel-titânio com secções transversais semelhantes e confeccionados com diferentes tipos de tratamentos térmicos: Hyflex CM (HCM 25/.06), Vortex Blue (VB 25/.06), Sequence Rotary File (SRF 25/.06) e EdgeSequel (EDF 25/.06) (n=20). Métodos: O teste de fadiga cíclica avaliou o tempo e o número de ciclos para a fratura (NCF) dos instrumentos em canal artificial com 60° de curvatura e 5mm de raio (n=10). O teste de torção avaliou o torque máximo e a deflexão angular para a fratura dos 3mm da ponta dos instrumentos (n=10). Após o teste de torção e de fadiga cíclica, os instrumentos foram avaliados em microscopia eletrônica de varredura (MEV) (n=10). Os dados foram analisados empregando-se os testes ANOVA e de Tukey, sendo selecionado um nível de significância de 5%. Resultados: HCM apresentou o maior tempo e NCF entre todos os instrumentos avaliados (p<0,05). O SRF apresentou um tempo semelhante (p>0,05) e menor NCF (p<0,05) do que o VB. Em relação ao teste torcional, o HCM apresentou menor valor de torque e maior deflexão angular entre os grupos avaliados (p<0,05). Não houve diferenças significativas entre VB, SRF e EDF em relação à deflexão angular (p>0,05). Conclusão: O HCM apresentou maior resistência à fadiga cíclica e deflexão angular. Entretanto, o VB apresentou maior resistência torcional para a fratura.
Influência da agulha e fluxo de irrigação na limpeza do canal radicular e extrusão apical de irrigante: análise em micro-CT
Authors: Torres Fernanda Ferrari Esteves , Guerreiro-Tanomaru Juliane Maria , Oliveira Luna do Val , Chavez-Andrade Gisselle Moraima , Tanomaru-Filho Mario
Published: April 2021

Introdução: O tipo de agulha e fluxo de irrigação é importante para a limpeza adequada no terço apical do canal radicular. Objetivo: Avaliar a influência do tipo de agulha e fluxo de irrigação na limpeza do canal radicular e canais laterais simulados e na extrusão apical do irrigante. Métodos: Trinta e dois dentes de resina foram utiliza- dos. Após a instrumentação do canal radicular, foram feitos quatro canais laterais a 2 e 7 mm do ápice. Os canais radiculares foram preenchidos com solução de contraste. Os canais foram irrigados com dois tipos de agulha, 29G e 31G, com diferentes designs (abertura lateral e apical) e dois fluxos (2 ou 5 mL/min), a 1 mm aquém do comprimento de trabalho. O volume da solução de contraste nos canais principal e laterais após irrigação e a extrusão apical do irrigante (mm3 ) foi avaliado por micro-CT, em comparação com a análise inicial. Os dados em porcentagem foram analisados pelos testes ANOVA e Tukey (α=0,05). Resultados: não houve diferença entre os protocolos de irrigação para limpeza da solução de contraste. Maior volume de extrusão apical com agulha 29G com abertura apical e 5 mL/min foi observado, em comparação ao mesmo tipo de agulha e 2 mL/min (p<0,05). Conclusão: Todos os protocolos de irrigação foram associados à limpeza dos canais radiculares. Maior extrusão apical foi observada com agulha 29G — abertura apical com maior fluxo de irrigação (5 mL/min). Implicações clínicas: Irrigação endodôntica com agulha com abertura apical e maior fluxo da solução pode favorecer a extrusão dos irrigantes para os tecidos periapicais.
Instrumentação foraminal: repercussões locais e sistêmicas
Authors: Machado Ricardo , Comparin Daniel , Aguiar Leticia , Ferrari Carlos Henrique , Garcia Lucas da Fonseca Roberti
Published: April 2021

Introdução: A infecção endodôntica pode alcançar a saída foraminal e, inclusive, ir além dela. Logo, a determinação da constrição apical como o limite ideal para instrumentação e obturação tem sido questionada. A instrumentação foraminal intencional é realizada com o intuito de diminuir o contingente microbiano a níveis mais favoráveis ao reparo. Entretanto, repercussões locais e sistêmicas estão associadas à sua execução. Objetivo: Realizar uma revisão crítica da literatura sobre repercussões locais e sistêmicas relativas à instrumentação foraminal intencional. Métodos: Em março de 2018, uma busca eletrônica realizada na base de dados PUBMED utilizando os termos “foraminal enlargement” OR “foraminal widening” OR “apical limit” AND “endodontics” identificou 74 artigos científicos. Esses artigos, a análise de suas referências bibliográficas e a utilização de mais 5 artigos base resultaram nos 111 estudos consultados para a realização dessa pesquisa. Resultados: A ampliação foraminal intencional nem sempre pode ser praticada em virtude de razões anatômicas e morfológicas. Quanto maior a ampliação do forame apical, maior a possibilidade de extravasamento de substâncias e/ou materiais utilizados para a realização do tratamento endodôntico. A instrumentação foraminal intencional parece ser contraindicada em pacientes que fazem ou fizeram uso de bisfosfonatos recentemente, com distúrbios de coagulação e/ou sob uso crônico de anticoagulantes e com alto risco de bacteremia. Conclusões: Os impactos da instrumentação foraminal intencional sobre o sucesso do tratamento endodôntico devem ser investigados. Contudo, os delineamentos metodológicos dos estudos clínicos devem ser cuidadosos, principalmente no tocante às condições sistêmicas dos pacientes que farão parte do universo amostral.
Novo qualis periódico
Authors: Moraes Sylvio Luiz Costa de
Published: April 2021

A Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) iniciou em 2018 ações para o aprimoramento dos instrumentos de avaliação, tendo como motivação principal aumentar o foco na qualidade da formação de doutores e mestres, e na excelência da pós-graduação brasileira. Foram consideradas as recomendações (centradas em contribuições de entidades consultadas), apontadas pelo relatório da Comissão Especial de Acompanhamento do Plano Nacional de Pós-graduação (PNPG 2011-2020).
Os desdobramentos da formação continuada em Mídias na Educação na prática pedagógica dos egressos
Authors: Alves Luan Henrique , Paulo Jacks Richard de
Published: April 2021

Defronte as limitações advindas da formação inicial de professores e os constantes rearranjos sociais e tecnológicos que convergem na escola, faz-se necessária a proposição de cursos de formação continuada aos docentes, de modo que aprimorem conhecimentos e desenvolvam habilidades em prol da oferta de um ensino com melhor qualidade aos alunos. Face ao exposto, procuramos identificar, em uma investigação de mestrado, os desdobramentos do curso de Especialização em Mídias na Educação e os possíveis redimensionamentos na prática pedagógica dos professores egressos no tocante à integração das mídias no processo de ensino e de aprendizagem. O estudo, de cunho qualitativo, teve como instrumento para construção dos dados o questionário online contando com a participação de 32 professores. Os resultados indicam a constituição de uma postura crítica por parte de alguns sujeitos frente às mídias, reelaborando as formas de integrá-las na sala de aula. Esses têm observado as particularidades de cada mídia e articulado seu uso com os objetivos pedagógicos que pretendem alcançar. Não obstante, alguns sujeitos mantiveram as práticas de ensino tradicionais e, em consequência, utilizam as mídias apenas como ferramenta de reprodução ou transmissão de conhecimentos, desconsiderando o potencial pedagógico que elas detêm.
Removal of Remazol Black B dye using bacterial cellulose as an adsorbent
Authors: Leal Andressa Nathally Rocha , De Lima Alice da Conceição Alves , Azevedo Marilia Gabriela Ferreira dos Anjos , Santos Dayane Kelly Dias do Nascimento , Zaidan Léa Elias Mendes Carneiro , De Lima Valmir Félix , Cruz Filho Iranildo José
Published: April 2021

Effluents from textile processes, when discarded of inappropriately, have been shown to be a major environmental concern. In this way, different methods can be used, among them adsorption is an economical and efficient technique in the removal of dyes. Therefore, we propose to analyze the adsorptive capacity of bacterial cellulose (CB) against effluents containing the dye Remazol Black B (RBB). CB was produced by the bacterium Gluconacetobacter hansenii and characterized by the techniques of FTIR, DRX, TGA / DTG and pH (PCZ). The RBB removal tests were initially performed at different pHs. From the best experimental condition, new tests were performed at temperatures of 30, 40, 60 and 100 ± 2 °C, 150 rpm, pH 3.5, using 0.5 g of adsorbent in the concentrations of dye from 25 to 65 mg·L-1. The kinetic study showed that the system balance was achieved in 80 minutes. The experimental data were better described by the pseudo-second order model. The equilibrium results showed that the experimental data fit the Langmuir model (qmax 17.513 mg·g-1). The thermodynamic parameters of adsorption showed that the process is exothermic, not spontaneous and also presented low system randomness. The activation energy (Ea) was 23.8 kJ·mol-1 characterizing physical adsorption. The residual water was not toxic to animal or microbial cells. Bacterial cellulose proved to be a good low-cost adsorbent, easy to acquire and which can be used in the adsorption process.
Alterações funcionais e biopsicossociais de pacientes com pé diabético
Authors: Neves Osmar Max Gonçalves , Nunes Paula Santos , De Carvalho Fernanda Oliveira , Jesus Maria Joseli Melo , Aragão José Aderval , Araújo Adriano Antunes de Souza
Published: April 2021

O caráter crônico do pé diabético pode influenciar no desenvolvimento de distúrbios psicológicos, contudo, ainda é preciso compreender as associações do pé diabético às condições biopsicossociais, restrições de funcionalidade e a qualidade de vida destes pacientes. Dessa forma, o objetivo desse caracterizar as alterações funcionais e psicossociais e investigar a qualidade de vida, ansiedade e depressão em pacientes com pé diabético. Para tanto, foi realizado um estudo transversal, por meio de aplicação de questionários (sociodemográfico, Escala de Independência Funcional - Kats, Questionário de qualidade de vida - Whoqol-Bref, Escala hospitalar de ansiedade e depressão HADS), em pacientes com diabetes mellitus e com pé diabético atendidos no serviço de cirurgia vascular durante 18 meses em um hospital terciário. Dos pacientes incluídos, 200 possuíam pé diabético, atenderam aos demais critérios de inclusão e aceitaram participar da pesquisa. Cerca de 31% dos indivíduos estudados apresentaram classificação A de Katz (independência funcional). A qualidade de vida geral determinada pelo Whoqol-Bref foi de 51,1, e entre os domínios, o domínio físico demonstrou a menor média, igual a 32. Esse achado pode ser associado à baixa independência funcional encontrada em 31% dos pacientes. Foi observada uma prevalência de 29% de depressão e 23% de ansiedade nos pacientes com pé diabético. O nível da amputação demonstrou impacto maior que a existência ou não da amputação na qualidade de vida dos pacientes, resultando ainda em uma menor independência funcional. A dificuldade para realizar atividades básicas também influenciou o aumento da prevalência da ansiedade e depressão.
Equivariant Ulrich bundles on exceptional homogeneous varieties
Authors: Lee Kyoung-Seog , Park Kyeong-Dong
Published: April 2021

We prove that the only rational homogeneous varieties with Picard number 1 of the exceptional algebraic groups admitting irreducible equivariant Ulrich vector bundles are the Cayley plane E
6/P
1 and the E
7-adjoint variety E
7/P
1. From this result,we see that a general hyperplane section F
4/P
4 of the Cayley plane also has an equivariant but non-irreducible Ulrich bundle.
Exotic Steiner chains in Miquelian Möbius planes of odd order
Authors: Hungerbühler Norbert , Villiger Gideon
Published: April 2021

In the Euclidean plane, two circles that intersect or are tangent clearly do not carry a finite Steiner chain of circles. We show that such exotic Steiner chains exist in finite Miquelian Möbius planes of odd order. We obtain explicit conditions in terms of the order of the plane and the capacitance of the two carrier circles for the existence, length, and number of Steiner chains.
Compact null hypersurfaces in Lorentzian manifolds
Authors: Atindogbé C. , Gutiérrez M. , Hounnonkpe R.
Published: April 2021

We show how the topological and geometric properties of the family of null hypersurfaces in a Lorentzian manifold are related with the properties of the ambient manifold itself. In particular, we focus in how the presence of global symmetries and curvature conditions restrict the existence of compact null hypersurfaces. We use these results to show the influence on the existence of compact totally umbilic null hypersurfaceswhich are not totally geodesic. Finally we describe the restrictions that they impose in causality theory.
Stratégie Pour la Corée
Authors: Guex Samuel ,   (traduction et annotation)*
Published: April 2021

The following pages provide an annotated translation in French of “Chaoxian celue” (Strategy for Korea), an influential document in the history of modern East Asia. The author, Huang Zunxian (1848–1905), was the counselor of the first Chinese minister assigned to Japan in 1877, He Ruzhang (1838–1891). Their contacts with Japanese and Western diplomats brought both men to the conclusion that China should encourage Korea to conclude treaties with Western nations. In 1880, Huang Zunxian developed their views in a booklet “Chaoxian celue,” in which he urged Korea to “keep close to China, strengthen ties with Japan, and ally with the United States.” He presented it to Kim Hong-jip (1842–1896), head of a Korean diplomatic mission to Japan, who submitted it to King Gojong upon his return to Korea. Huang’s treatise made a strong impression on King Gojong and was instrumental in steering Korea toward an open-door policy.
The vital centre: understanding the concept of Yao
要 in the Han Feizi 韓非子
Authors: Brusadelli Federico
Published: April 2021

The eighth chapter of the Han Feizi is dedicated to the ways of “wielding power” (揚權). As the entire book attributed to Master Han Fei is arguably dedicated to the problem of power – establishing, exerting and protecting it from external and internal enemies, this section of the book is crucial for the entire text. The present article starts from the term “yao 要” and applies the method of conceptual history to this pre-imperial text. It intends to shed light on the conceptual associations between the survival of the State, the ruler’s position, the importance of a political centre, and the use of objective ruling techniques, within a newly conceived “political sphere” with its own laws and necessities. The paper then addresses the heritage of the Han Feizi to conceptualizations of politics during the imperial period, eventually considering the function of the ruler in Han Fei’s thought.
Numerical lists of foundational knowledge in early Chinese and early Buddhist traditions
Authors: Grebnev Yegor
Published: April 2021

In this paper, I compare the material in the Pāli canon of Theravada Buddhism, a textual tradition famous for the abundance of numerical lists, with certain chapters of the Yi Zhou shu 逸周書 and chapter “Hong fan” 洪範 of the Shang shu 尚書, where numerical lists are equally important. I propose a classification of the insufficiently studied numerical lists in the Yi Zhou shu and point out the divergences in them, suggesting that they were produced by competing communities that developed slightly discordant systems of knowledge. I compare the evolution of complex frameworks of numerical lists in the Buddhist traditions and in early China, arguing that both created comprehensive systems of knowledge-practice out of simpler lists. The peculiar form of numerical lists as vehicles of systematised knowledge-practice attested in both cultures may have originated in hierarchical communities with indisputable knowledge authority. Such communities are known to have existed in early Buddhism, and they have convincing parallels in China’s contemporary political practice, where numerical lists are used to unify the patterns of thinking and behaviour in hierarchical groups.
Solving systems of fractional two-dimensional nonlinear partial Volterra integral equations by using Haar wavelets
Authors: Khajehnasiri Amir Ahmad , Ezzati R. , Afshar Kermani M.
Published: April 2021

The main aim of this paper is to use the operational matrices of
fractional integration of Haar wavelets to find the numerical
solution for a nonlinear system of two-dimensional fractional
partial Volterra integral equations. To do this, first we present the operational
matrices of fractional integration of Haar wavelets. Then we apply
these matrices to solve systems of two-dimensional fractional partial Volterra integral equations (2DFPVIE). Also, we present the error analysis and convergence as well. At the end, some numerical examples are presented to demonstrate the efficiency and accuracy of the proposed method.
Pyruvate carboxylase deficiency type C as a differential diagnosis of diabetic ketoacidosis
Authors: Doğulu Neslihan , Öncül Ümmühan , Köse Engin , Aycan Zehra , Eminoğlu Fatma Tuba
Published: April 2021

Objectives

Type C pyruvate carboxylase (PC) deficiency is extremely rare, and has been described in only a few patients in literature to date. Herein, we present the case of a four-year-old patient admitted with diabetic ketoacidosis and diagnosed with type C PC deficiency based on clinical and biochemical findings.

Case presentation

A Turkish girl was referred to the intensive care unit at the age of three-years with a three-day history of vomiting and abdominal pain. Upon physical examination, the patient was found to be experiencing lethargy, dehydration, and Kussmaul breathing. Hyperglycemia, metabolic acidosis, and ketonemia were detected. Clinical and laboratory findings pointed to a prediagnosis of diabetic ketoacidosis. Intravenous fluid, bicarbonate, and insulin treatments were initiated. Elevated alanine and proline levels were recorded in plasma amino acid analysis, while urinary organic acid level analysis revealed increased lactate, pyruvate, 3-OH-butyrate, and acetoacetate levels. Whole exome sequencing revealed homozygous c.584C>T (p.Ala195Val) mutation in the PC gene.

Conclusions

To date, there have been no reports in literature of type C phenotype patients manifesting with DKA. Our case is the first case with the type C phenotype to be admitted with clinical and laboratory findings of DKA.
Importance of individualizing treatment decisions in girls with central precocious puberty when initiating treatment after age 7 years or continuing beyond a chronological age of 10 years or a bone age of 12 years
Authors: Vargas Trujillo Marcela , Dragnic Sanja , Aldridge Petra , Klein Karen O.
Published: April 2021

Objectives

Gonadotropin-releasing hormone agonist treatment is important for optimal growth in girls with central precocious puberty (CPP). Data are lacking regarding benefit to height outcome when treatment is started after chronological age (CA) of 7 years, and if continued beyond CA of 10 years or bone age (BA) of 12 years.

Methods

Forty-eight girls with CPP were treated with monthly leuprolide depot. Change in predicted adult height (PAH) during treatment was assessed. Changes in PAH and growth velocity were compared between girls initiating treatment at CA <7 vs. ≥7 years, and BA ≥12 vs. BA <12 years.

Results

Mean baseline CA was 6.8 years, BA, 10.2 years; and PAH, 156.4 cm. BA/CA ratio decreased from pretreatment values, averaging 1.5 to 1.2 at the end of treatment. Proportion of girls with >5 cm PAH change during treatment was similar, and PAH increased throughout treatment in most girls, regardless of age at treatment initiation. PAH continued to increase in 16/19 girls who continued treatment after BA of 12 years, and also in 16/22 girls who continued treatment after CA of 10 years.

Conclusions

PAH improved in most girls who initiated treatment after CA of 7 years. It continued to improve in most girls with longer treatment, even past BA of 12 years or CA of 10 years, which suggests that no absolute CA or BA limit should define initiation or end of treatment. Treatment plans need to be individualized, and neither treatment initiation nor cessation should be based on BA or CA alone.
Diagnostic accuracy of modified Hadlock formula for fetal macrosomia in women with gestational diabetes and pregnancy weight gain above recommended
Authors: Lovrić Boris , Šijanović Siniša , Lešin Joško , Juras Josip
Published: April 2021

Objectives

Women with gestational diabetes (GDM) and weight gain during pregnancy above recommended more often give birth to macrosomic children. The goal of this study was to evaluate the diagnostic accuracy of the modified formula for ultrasound assessment of fetal weight created in a pilot study using a similar specimen in comparison to the Hadlock-2 formula.

Methods

This is a prospective, cohort, applicative, observational, quantitative, and analytical study, which included 213 pregnant women with a singleton pregnancy, GDM, and pregnancy weight gain above recommended. Participants were consecutively followed in the time period between July 1st, 2016, and August 31st, 2020. Ultrasound estimations were made within three days before the delivery. Fetal weights estimated using both formulas were compared to the newborns’ weights.

Results

A total of 133 fetal weight estimations were made. In comparison to the newborns’ weight modified formula had significantly smaller deviation in weight estimation compared to the Hadlock-2 formula, higher frequency of deviation within 5% of newborns weights (78.2% [95% CI=0.74–0.83] vs. 60.2%), smaller frequency of deviations from 5 to 10% (19.5 vs. 33.8%) and above 10%, which was even more significant among macrosomic children. There were 36/50 (72%) correctly diagnosed cases of macrosomia by modified and 33/50 (66%) by Hadlock-2 formula. Area under the curve (AUC) for the modified formula was 0.854 (95% CI=0.776–0.932), and for the Hadlock-2 formula 0.824 (95% CI=0.740–0.908). The positive predictive value of the modified formula was 81.81%, the negative 97.91%.

Conclusions

In cases of greater fetal weights, the modified formula showed greater precision.
Remarkable photoluminescence enhancement of CsPbBr3 perovskite quantum dots assisted by metallic thin films
Authors: Zhao Wenchao , Wen Zhengji , Xu Qianqian , Zhou Ziji , Li Shimin , Fang Shiyu , Chen Ting , Sun Liaoxin , Wang Xingjun , Liu Yufeng , Sun Yan , Tan Yan-Wen , Dai Ning , Hao Jiaming
Published: April 2021

All-inorganic cesium lead halide perovskite quantum dots have recently received much attention as promising optoelectronic materials with great luminescent properties and bright application prospect in lighting, lasing, and photodetection. Although notable progress has been achieved in lighting applications based on such media, the performance could still be improved. Here, we demonstrate that the light emission from the perovskite QDs that possess high intrinsic luminous efficiency can be greatly enhanced by using metallic thin films, a technique that was usually considered only useful for improving the emission of materials with low intrinsic quantum efficiency. Eleven-fold maximal PL enhancement is observed with respect to the emission of perovskite QDs on the bare dielectric substrate. We explore this remarkable enhancement of the light emission originating from the joint effects of enhancing the incident photonic absorption of QDs at the excitation wavelength by means of the zero-order optical asymmetric Fabry–Perot-like thin film interference and increasing the radiative rate and quantum efficiency at the emission wavelength mediated by surface plasmon polaritons. We believe that our approach is also potentially valuable for the enhancement of light emission of other fluorescent media with high intrinsic quantum efficiency.
Revisiting Ramla l-Ħamra Villa – New Discoveries and Observations on the Roman Villa Complex in Xagħra, Gozo
Authors: Mifsud Christian
Published: April 2021

The discovery of a set of ashlar blocks uncovered at the waters’ edge at Ramla l-Ħamra Bay in Gozo has prompted a series of assessments to understand if the exposed archaeological remains were an already known part of a Roman villa complex investigated in 1911 or whether these were a new addition. The study presents the results of the research undertaken through a series of on-site surveys and desktop studies confirming a new addition to the already known villa complex. The new discoveries are discussed within the light of the published sources and provide additional interpretations of the site. This study also provides an opportunity to reconsider the new discoveries and makes a case for a renewed interest for archaeological investigations which could shed more light on the remains of the Roman bathhouse as well as its environmental setting.
Magnetic characterization of magnetoactive elastomers containing magnetic hard particles using first-order reversal curve analysis
Authors: Schliephake Mia , Linke Julia M. , Odenbach Stefan
Published: April 2021

The use of new types of intelligent materials is becoming increasingly widespread. These include magnetoactive elastomers with hard magnetic filling components, which offer the unique chance to adapt active and passive material properties. In this context, this paper presents an overview of the experimental results on the study of the magnetic properties of elastic composites with a magnetic hard component. First-order reversal curves, which are recorded with a vibrating sample magnetometer, are used as method to characterize the magnetic material behavior. The influence of various parameters on the process of magnetization of composites is considered, including the stiffness of the polydimethylsiloxane-based matrix polymer, the particle ratio and the particle size as well as the so-called training effect.
Vertrauensrelevantes Wissen und Diskurssemantik: eine diskurslinguistische Annäherung an das KonzeptVertrauen
Authors: Belosevic Milena
Published: April 2021

This paper investigates the concept of trust at the discourse level. Based on an epistemological discourse approach (Busse 1987), trust is defined as trust-relevant knowledge, which is usually implicit. The paper focuses on the methodology of the analysis of trust at discourse level in the mass media reporting on refugees by identifying implicit indicators of trust constructions (trust dimensions) and their discourse linguistic operationalization through argumentation patterns. The manual annotation of trust dimensions and a combination of hermeneutic and automatic analysis usingMaxqdaplay a central role for the operationalization of the concepttrustfor discourse linguistic analysis. The implementation of the method is demonstrated by analyzing the media construction of the loss and the rebuilding of trust towards refugees (the discursive trust dynamics) in the context of the New Year's Eve sexual assaults in Germany in December 2015/January 2016. In contrast to sociological studies, the present analysis does not show an increased mass media construction of distrust in the face of this discursive event and therefore demonstrates that discourse linguistic trust research contributes to the interdisciplinary research on trust and provides valid findings about the collective knowledge about refugees.
Wie adaptiv ist Sprachförderung für Kinder mit Deutsch als Zweitsprache?
Authors: Geyer Sabrina , Müller Anja
Published: April 2021

This paper focuses on the definition, operationalization and empirical investigation ofadaptivityin the context of language training. We discuss a study that aimed at answering the question whether kindergarten teachers adapt their language to the specific needs of children with German as a second language in language training situations. Specifically, we investigated whether teachers use subordinate clauses and specific language training techniques to present or elicit subordinate clauses more frequently when working with children who had not yet acquired subordinate clauses than teachers supporting children who already had. Fifteen teachers were videotaped during language support sessions. Ten children who were supported during these sessions had not yet acquired subordinate clauses (n = 18), the other five teachers supported children with no additional needs in this area (n = 7). The teachers’ language was analysed both quantitatively and qualitatively in terms of the frequency of use of different subordinate clauses (e. g. position of the verb, subordinating conjunctions, different types of clauses) and the use of language support techniques (e. g. corrective feedback, expansions, questions) that aimed at presenting or eliciting subordinate clauses. A comparison of the two groups showed no differences in the teachers’ language depending on whether they supported children with or without additional needs regarding subordinate clauses. Therefore, the teachers’ language cannot be considered to be adaptive.
Zwischen Schule und Studium – Wissenskommunikation in studentischen Kleingruppen angehender Lehrer*innen
Authors: Sacher Julia , Stövesand Björn , Weiser-Zurmühlen Kristin
Published: April 2021

Bridging the gap between theory and practice is an important topic in German teacher education: How can trainee teachers be prepared for the requirements of their future job? One concept that has been discussed in depth is research-based learning: it promises to foster critical thinking and reflexion skills. In our paper, we discuss data from three settings of research-based learning in which students work in small groups of 2–4 persons on empirical data and/or discuss scientific publications. Using a conversation analytic approach, we ask how exactly students bridge the aforementioned gap – how they use biographical and/or professional knowledge from the epistemic domainschool, and in what way these referrals are functional for the ongoing interaction in the small groups. We describe three practices and discuss them in terms of identity construction, knowledge communication and ‘doing togetherness’.
Models of Regional Economic Development: Illustrations Using U.S. Data
Authors: Buchholz Maximilian , Bathelt Harald
Published: April 2021

Considering stagnating regional prosperity levels and growing inter-regional disparities in many economies, this paper appeals for a renewed research agenda to deepen our understanding of regional economic development. This is done by discussing different conceptual perspectives, their empirical applications and open questions and suggestions for future research. Conventional approaches view development as an outcome of and dependent upon local economic structure. That is, high regional performance is associated with specific regional industrial and human capital mixes. We argue that to deepen our understanding of the mechanisms that drive regional economic development it is helpful to apply a relational approach that pays attention to the networks between economic actors across different spatial scales, from local to global. These generate knowledge as well as access to technologies, resources and markets, thereby catalyzing income growth. To support regional policy agendas, it is further necessary to go beyond identifying regularities that structure development and engage with differing regional pathways by conducting systematic comparative analyses of local contextual and institutional conditions.
Production of activated carbon from sludge and herb residue of traditional Chinese medicine industry and its application for methylene blue removal
Authors: Yu Zhenwei , Gao Qi , Zhang Yue , Wang Dandan , Nyalala Innocent , Chen Kunjie
Published: April 2021

Sludge-based activated carbon (SAC) was prepared with sewage sludge and Chinese medicine herbal residues (CMHR’s). An orthogonal experimental design method was used to determine the optimum preparation conditions. The effects of the impregnation ratio, activation temperature, activation time, and addition ratio of CMHR’s on the iodine value and Brunauer-Emmett-Teller surface area of activated carbon were studied. X-ray diffraction, Fourier-transform infrared spectrometer, and scanning electron microscopy were used to characterize the prepared SAC. The results showed that the optimal process conditions for preparing the SAC were as follows: an impregnation ratio of 1:4, an activation time of 30 min, an activation temperature of 700 °C, and an addition ratio of CMHR’s of 40%. The adsorption balance of the methylene blue dye was examined at room temperature. Adsorption isotherms were obtained by fitting the data using the Langmuir and Freundlich models, which showed that methylene blue adsorption was most suitable for the Langmuir equation. The results demonstrated that SAC prepared from SS and CMHR’s from a Chinese medicine factory could effectively expel dyes from wastewater.
Metal oxides and ultraviolet light-based photocatalytic pretreatment of biomass for biogas production and lignin oxidation
Authors: Awais Muhammad , Mustafa Muhammad Salman , Rasheed Muhammad Asif , Jamil Farrukh , Naqvi Syed Muhammad Zaigham Abbas
Published: April 2021

Lignocellulosics are abundant and readily available as the raw material for the production of biogas. However, the structure of this raw material needs to be modified to increase its digestibility during anaerobic fermentation. Various pretreatment methods that have been proposed in the past have been examined; however, the focus of the present study was to pretreat a wheat straw (WS) substrate using an advanced oxidation process (AOP) with a metal oxide photocatalyst combined with ultraviolet (UV) irradiation. Four different metal oxides were examined at 0, 1, 2, 3, and 4% dosages (w/w) coupled with UV irradiation for 0, 60, 120, and 180 min. Experimental results revealed that among all metal oxide catalysts examined, only the 4% CuO combined with 180 min UV irradiation caused the most lignin to be released from the WS. This resulted in the highest vanillic acid (VA) being produced (4.32 ± 0.15 mg VA/g VS). This WS pretreatment also resulted in a biomethane potential (BMP) assay of 384 ± 16 NmL CH4/g VS. The BMP assay results revealed a maximum 28% increase in biodegradability and a 57% increase in methane production. The use of either metal oxide catalysts or UV irradiation alone resulted in ineffective WS pretreatment.
Enhanced stepwise spraying effects on gas production by anaerobic solid-state fermentation in a high-density straw bed
Authors: Li Ruirong , Kong Wei , Chen Yongsheng , Cao Jie , Wang Pengjun , Qu Haoli , Han Baihe , Cai Liang
Published: April 2021

Rice straw bales and fresh pig manure were used as feedstock, and added microbial fortification agent and stepwise spraying methods were used to investigate the effect on the gas yield characteristics and fermentation properties of garage-type anaerobic solid-state fermentation at ambient temperature. The test results showed that the added microbial fortification agent advanced the arrival time of the peak temperature by one day and increased the average fermentation temperature by 8.28%. The microbial fortification agent can increase gas production and the time of first yield peak and shorten the start-up time. The maximum gas yield of the enhanced groups was 13.01% higher than the ordinary groups, and the methane concentration increased 16.98%. After the second gas yield peak, the reduction of spraying frequency had almost no effect on the gas yield. The stepwise spraying method was helpful to improve the moisture distribution and the degradation rate of the middle layer. This study provides a basis for evaluating and improving the operating efficiency of the anaerobic solid-state fermentation systems.