bluuebunny/crossref_metadata_2025 huggingface dataset:
Contribuciones para una ontoepistemología de la vivencia en educación
Authors: Lopez Romorini Maria Veronica , Perlo Claudia Liliana
Published: April 2017

El objetivo del trabajo es contribuir a la articulacin de los conceptos de
cognicin y vida en la prctica educativa, mediante el concepto de vivencia. El corpus terico
incluye fundamentos filosficos, psicolgicos, biolgicos, fsicos y neurocientficos, hasta
el enraizamiento en la prctica concreta de los mismos. Fundamentamos la perspectiva
ontoepistemolgica asumida realizando recorrido histrico acerca de la escisin de los
conceptos de doxa y episteme en el campo de la filosofa. Posteriormente desarrollamos
el concepto de vivencia. Mostramos la relevancia de estos desarrollos y sus sustentos
cientficos, para proponer una perspectiva biocntrica de la educacin, donde se recupere
la integracin entre conocimiento y vida. Finalmente presentamos resultados de nuestras
investigaciones a partir de la puesta en accin de este enfoque.
Formação de professores de filosofia: proposições para o debate
Authors: Matos Junot Cornélio
Published: April 2017

O texto tem como propsito formular algumas questes que permitam discutir a formao docente nos cursos de licenciatura em filosofia. Dessa forma, representa um esforo de buscar caminhos para superao da fragmentao na organizao de tais cursos, seu descolamento em relao escola bsica e s dicotomias que marcam a prpria formatao dos Projetos Pedaggicos dos Cursos. No primeiro momento coloca-se como premissa bsica uma perspectiva antropolgica que deve perpassar todo esforo de formao docente para depois refletir sobre a mesma como tal conduzindo o debate para o problema da formao dos professores de filosofia.
A apropriação de uma fé filosófica como intenção formativa de Karl Jaspers
Authors: Röhr Ferdinand
Published: April 2017

Resumo Karl Jaspers no pertencia a nenhuma escola filosfica quando assumiu sua ctedra de Filosofia em Heidelberg. Era mdico e fundador da psicopatologia como campo cientfico. Desenvolveu uma forma de apropriao da substncia existencial dos grandes filsofos para elaborar a sua prpria doutrina, a periechontologia, como antdoto a todas as formas de reducionismo e dogmatismo. A contemplao e comunicao existencial tornaram-se a base de uma conduo filosfica da vida com a meta de alcanar uma f filosfica prpria. O presente texto pretende demonstrar como a apropriao existencial da filosofia pode contribuir na conquista de uma f filosfica de cada um e, com isso, na formao humana em tempos de insegurana generalizada. [i] Texto apresentado como comunicao no 5 Congresso da Sociedade de Filosofia da Educao de Lngua Portuguesa (SOFELP) realizado na UNICAMP de 26 a 28 de agosto de 2015.
Política, Gestão e Financiamento da Educação, de Juliano Mota Parente e Cláudia da Mota Darós Parente
Authors: Lopes Silvana Fernandes
Published: April 2017

Resenha do Livro:PARENTE, J. M; PARENTE, C. M. D. (Org). Poltica, Gesto e Financiamento da Educao. So Cristvo: Editora UFS, 2012. 218 p.ISBN: 978-85-7822-328-1
A filosofia como uma das fontes do pensamento complexo de Edgar Morin: a importância da dialógica cultural
Authors: Almeida Cleide Rita Silvério de
Published: April 2017

Este trabalho apresenta um breve quadro de autores como Herclito, Montaigne e Marx, entre outros que se constituram em fontes para Edgar Morin, tendo desempenhado importante papel em sua formao, e que podem tambm apontar caminhos para a tarefa de formao de nossos alunos na educao escolar, por meio no s de processos instrucionais, mas de dinmicas de reflexo mobilizadoras do pensar que se apresentam como foras de interrogao sobre a condio humana. O pensamento complexo foi nutrido por diversas questes filosficas que podem ser entrelaadas com o romance, a poesia e o cinema, os quais, ao expor as complexidades humanas, vo ao encontro da curiosidade que sempre instigou Morin. Trata-se de um conhecimento que prope a discusso dos opostos e das contradies como complementares e indissociveis e aponta para a importncia do dilogo.
Plano Nacional de Educação e qualidade de ensino: considerações sobre a autoeficácia dos agentes escolares
Authors: Russo Miguel Henrique , Azzi Roberta Gurgel
Published: April 2017

Reflexo motivada pela aprovao do Plano Nacional de Educao e pela expectativa que ele traz como instrumento legal e metodolgico para a melhoria da educao nacional. O objetivo foi questionar se o PNE contem os elementos que conduzem melhoria da educao e se o faz em termos que independem dos executores para definir suas aes. So apresentadas e discutidas as metas e as estratgias do PNE que tm a melhoria do ensino como objeto. Em face da generalidade e do foco daquelas, conclumos que sero necessrias novas leituras sobre elas nos planos estaduais e municipais. Focalizamos a discusso na questo da sade dos docentes, que aparece na estratgia 7.31, e sobre seu enfrentamento com o auxilio do constructo de autoeficcia.
Da tradição filosófico-pedagógica aos caminhos da prática filosófica no ensino médio como experiência do pensar: ensinar filosofia ou filosofar?
Authors: Lima de Salles Conceição G. Nóbrega
Published: April 2017

Como campo dos saberes da formao humana no de hoje que a presena da filosofia nos currculos escolares no Brasil constitui objeto de problematizao. O presente artigo privilegia como objeto especfico de anlise a prtica da filosofia no ensino mdio. Perguntamo-nos como a filosofia vem sendo experienciada nos anos finais da educao bsica. De forma mais ampla: o que significa pensar nessa experincia que associa filosofia e seu ensino? Para tanto, revisitamos algumas concepes dominantes do ensino da filosofia e seus desdobramentos. Na seqncia indicamos alguns traos de uma possibilidade filosfica que, diferentemente do ensino tradicional da filosofia, possibilita a experincia do pensar filosfico, na qual o que mais se ensina e se aprende no o contedo ou uma competncia, mas uma relao com o que se pretende ensinar e aprender, reforando no aluno a abertura, a vontade de experimentar coisas novas, inclusive, no pensamento.
Cartografias e a formação de professores: o papel filosófico-pedagógico dos professores de Filosofia
Authors: Carvalho Flávio
Published: April 2017

Este texto resulta de uma investigao em desenvolvimento acerca do professor de Filosofia no Ensino Mdio, abordando sua formao e sua atuao na educao de jovens estudantes. Aqui apresentamos um diagnstico construdo na primeira fase da investigao, no qual indicamos os principais problemas vinculados ao ensino de Filosofia e ao seu ator pedaggico, o professor. Na segunda fase da investigao, ainda em construo, sob a orientao da metodologia da cartografia, passaremos investigao de como as relaes entre este ator e os outros atores pedaggicos se constroem, como e quais discursos e dispositivos so elaborados e, por fim, como podemos pensar e executar intervenes alternativas que estimulem a educao filosfica.
Gestão do processo de reorientação curricular na Rede Municipal de Ensino de Dourados (2001 a 2008)
Authors: Carvalho Eliane Souza de , Oliveira Lindamir Cardoso Vieira de
Published: April 2017

Esse artigo apresenta a gesto da reorientao curricular ocorrida no municpiode Dourados (MS) no perodo de 2001 a 2008, procurando descrever a proposta oficialdo processo de reorientao curricular e identificar os entraves e facilitadores na materializaoda gesto.A investigao foi desenvolvida numa perspectiva qualitativa, por meiode observao, pesquisa bibliogrfica, um corpus documental e entrevistas com diretores,coordenadores e professores de quatro escolas que vivenciaram o processo. Os resultadosevidenciaram que no houve uma participao efetiva nos momentos de conceponem na definio das estratgias de implementao e/ou avaliao da proposta. No quediz respeito ao desenvolvimento e/ou reforo da autonomia atravs da gesto, esta ficoucomprometida, pois no houve ampla consulta sobre a alternativa metodolgica implantada.Permaneceram inalteradas as relaes de poder dentro e fora da escola. Os resultadosconfirmam a complexidade na concretizao da gesto democrtica no contexto da administraopblica municipal.
As crianças e a educação ambiental: discursos sobre “gerações do futuro” e apontamentos sobre uma possível contribuição na área
Authors: Maia Vânia Roseane Pascoal , Da Silva machado Carlos Roberto
Published: April 2017

O presente trabalho prope uma discusso sobre os discursos feitos em torno das crianas como projetos de futuro, quelas que a sociedade, a famlia e demais instituies teriam o intuito e o dever de preparar para tempos posteriores, sendo lembrados, portanto, como promessas e dependendo para isso, de investimentos programados. Junto a isso, trazemos as concepes tambm de natureza como um lugar que precisaria ser preservado, onde construiramos relaes harmoniosas e equilibradas, para o bem de todos e todas. Nossa hiptese de trabalho de que o contedo e os processos de algumas produes e discursos, ao se colocarem como servindo a todos, em nome das futuras geraes e tendo a natureza/meio ambiente como sendo nicos e de responsabilidade partilhada, serviriam de um lado para produzir a ideia da existncia de uma nica perspectiva e viso, assim sem conflitos ou divergncias de interesses; Por outro lado, ao se realizar isso enquanto produo simblica se estaria produzindo na prtica a defesa e os interesses de uns poucos, isto quer dizer, daqueles que falam (emitem o discurso) e que, ao desconsiderarem as diferenas relacionadas s crianas no presente, contextualizadas e pertencentes a uma determinada classe, deixariam obscuras as razes das desigualdades que geram disparidades sociais e econmicas, reproduzindo assim, atravs do discurso hegemnico e tambm, em alguns casos, adultocntrico , as relaes desiguais que sustentam a injustia social e ambiental existentes na atualidade, tanto no Brasil, quanto na cidade de Rio Grande.
O processo regulatório da educação superior a distância no Brasil
Authors: Mugnol Marcio
Published: April 2017

Este artigo analisa a implementao no Brasil da educao a distncia em nvel superior a partir da evoluo de seus marcos legais. Pretendemos mostrar que a posio inicial do MEC, sob a gesto do ministro Paulo Renato, foi de abertura praticamente indiscriminada do sistema federal de educao superior para a explorao da modalidade a distncia pelo setor privado. Esta poltica foi sendo revista principalmente a partir de 2007, j na gesto de Fernando Haddad, com a criao de um novo arcabouo institucional tanto para a superviso quanto para avaliao das instituies e cursos.
Valorização Profissional e Condições de Trabalho Docente no Plano Nacional de Educação 2014-2024
Authors: Roggero Rosemary
Published: April 2017

O estudo discute o Plano Nacional de Educao em vigor, sob trs aspectos: o que entendido como valorizao profissional, os desafios que a realidade apresenta, e os riscos de retrocesso, tanto na valorizao quanto nas condies de trabalho. A argumentao considera o nmero de docentes disponveis, o nmero de docentes necessrios e as dificuldades para atrair novas geraes para o magistrio no pas, elementos que, combinados, pem em xeque a viabilidade das propostas polticas recentes.
Prova Brasil e os mecanismos de controle simbólico na organização da escola e no trabalho docente
Authors: Schneider Marilda Pasqual , Sartorel Aline
Published: April 2017

O artigo analisa formas simblicas de regulao e controle de aes desenvolvidaspor escolas de educao bsica sob influncia de polticas de avaliao nacional. O estudoorienta-se pela questo: quais significados so atribudos Prova Brasil e que elementosde regulao e controle podem ser observados na organizao da escola e no trabalhodocente? A coleta de dados ocorreu por meio de observaes, entrevistas e questionrios agestores e docentes de escolas da rede municipal de ensino. Os resultados evidenciam que aProva Brasil constitui importante ferramenta de controle simblico das aes operadas porescolas pblicas municipais em vista de sua associao com o Ideb, atualmente indicadoroficial de aferio da qualidade da educao bsica no Brasil. Escolas e redes de ensino vmse rendendo s foras invisveis que integram a arquitetura dessa avaliao, mesmo noacreditando na potencialidade de induzirem mudanas efetivas de melhoria da qualidadeeducacional.
BNCC, componentes curriculares de história: perspectivas de superação do eurocentrismo
Authors: Da Silva Júnior Astrogildo Fernandes
Published: April 2017

Este texto tem como objetivo refletir sobre a Base Nacional Comum Curricular (BNCC) de histria buscando identificar possibilidades de superao do eurocentrismo. Foi realizada uma anlise do documento, ainda na sua fase preliminar, estabelecendo um dilogo com autores que discutem o ensino de histria, as epistemologias do Sul e estudos descoloniais. Concluiu-se que o documento, por um lado, apresenta limitaes, por outro, revela sinais de perspectivas de superao ao eurocentrismo. A histria em situao escolar no pode elaborar produtos que no respondam a contextos e necessidades sociais, no pode elaborar produtos obsoletos, descontextualizados que no tenham nenhum uso nem valor social. Da a necessidade de refletir cuidadosamente sobre a BNCC, avanar, e muito, no seu carter preliminar.
Base Nacional Comum Curricular para a educação infantil: entre desafios e possibilidades dos campos de experiência educativa
Authors: Pandini-Simiano Luciane , Buss-Simão Márcia
Published: April 2017

O presente texto pretende contribuir com a discusso das polticas curriculares nacionais, focando nos desafios e possibilidades da Base Nacional Comum Curricular da Educao Bsica para a educao infantil a partir da proposta dos Campos de Experincia. Para tanto, est organizado em trs partes, na primeira, a partir da legislao educacional brasileira, apresenta um conjunto de documentos orientadores que fundamentam a poltica educativa na educao infantil e sublinham o direito das crianas educao infantil. No segundo momento discute a base Nacional Comum Curricular para a educao infantil e a sua proposta de organizao a partir de Campos de Experincia. Na sequncia, finaliza apontando as possibilidades e desafios dos Campos de Experincia na educao infantil.
A BNCC no contexto de ameaças ao estado democrático de direito
Authors: Linhares da Silva Micarello Hilda Aparecida
Published: April 2017

O artigo analisa o processo de elaborao da BNCC em referncia ao contexto poltico mais amplo no qual esse processo vem sendo gestado, as diversas vozes que nele se manifestaram e os desafios de orquestrar essas vozes na redao da segunda verso preliminar do documento da base. Para tal, realiza uma incurso a documentos oficiais nos quais a BNCC referida e ao Portal da Base, espao virtual, criado pelo MEC para coletar e congregar as contribuies sobre os textos preliminares da base. So abordados, ainda, alguns avanos e limites dessa segunda verso do documento e apontadas as ameaas ao processo democrtico de sua elaborao no contexto de crise poltica atual, no qual o estado democrtico de direito se encontra em risco. A abordagem do ciclo de polticas de Richard Bowe e Stephen Ball o principal instrumento conceitual utilizado nas anlises empreendidas.
A primeira e segunda versões da BNCC: construção, intenções e condicionantes
Authors: Neira Marcos Garcia , Alviano Júnior Wilson , Almeida Déberson Ferreira de
Published: April 2017

Entre junho de 2015 e maio de 2016, o Ministrio da Educao empreendeu um grande esforo na produo de uma Base Nacional Comum Curricular. Sendo a primeira vez que a sociedade brasileira realizava tal tarefa, no restou alternativa a no ser aprender fazendo. Este artigo narra, do ponto de vista de um dos seus partcipes, o processo de construo da primeira e segunda verses do documento, assim como as intenes que mobilizaram as pessoas envolvidas. Descreve as etapas do processo, as principais influncias, apresenta os efeitos esperados e os condicionantes que possibilitariam a implementao de uma poltica curricular dessa monta.
Aventura e educação na Base Nacional Comum
Authors: Severino Antonio Joaquim , Pereira Dimitri Wuo , Dos Santos Vinicius Feitoza Sampaio
Published: April 2017

O ensaio se prope refletir sobre temtica das Prticas Corporais de Aventura ao ensejo da discusso da presena do componente de Educao Fsica na Base Nacional Comum Curricular, documento que procura abrir um debate na sociedade, para a criao de contedos uniformes nas escolas brasileiras, contedos cujo teor pedaggico possa subsidiar uma educao de qualidade para todos. Para isso, realizou-se uma pesquisa terica, atravs de reviso de literatura. As inquietaes e indagaes analisadas no documento so muitas e vo desde o uso de terminologias ainda em fase de debate e sem consenso acadmico, perpassando pela formao, capacitao, atuao e desafios dos profissionais de Educao Fsica para desenvolver o contedo de aventura na escola brasileira. Corrobora-se a relevncia da presena da Educao Fsica nos currculos escolares em funo da relevncia do movimento vital para o desenvolvimento integral de todos os estudantes.
Construção de significados e legitimação de discursos: o currículo da rede estadual de ensino de São Paulo
Authors: Carvalho Celso Do Prado Ferraz de
Published: April 2017

O currculo escolar tem ocupado significativo espao no debate educacional contemporneo. Tendo como referncia abordagens construdas pelos estudos culturais e pelo ciclo de polticas de Stephen Ball, entendemos que a elaborao de currculos um processo carregado de significados, que sinaliza para questes polticas, culturais e sociais. Embora em diversos documentos oficiais a necessidade do dilogo com a comunidade escolar seja enaltecida, as diferentes mediaes presentes no processo de elaborao e implementao tem privilegiado o discurso dos formuladores, produzindo uma situao em que os professores tm suas vozes pouco ouvidas. Sendo assim, o ato de compreender quais textos so legitimados na produo curricular consiste em procedimento fundamental para desvelar qual significado desejado pelos autores das polticas educacionais. O objetivo desse texto problematizar essa questo, por meio do currculo proposto pela Secretaria de Estado da Estado de So Paulo (SEE-SP).
Homeopathic treatment in oral lichen planus control
Authors: Wastner Rafaela Savio Melzer B. F. , Zanferrari Fernando Luiz , Sassi Laurindo Moacir
Published: April 2017

Lichen planus, considered an inflammatory disease of the stratified squamous epithelium of unknown aetiology, is a condition that often affects the oral mucosa. This pathology is more prevalent in female caucasian patients and the signs and symptoms range from asymptomatic to completely debilitating painful mucosal lesions. Objective: To report a case of a patient affected by lichen planus, whose treatment was homeopathic. Case report: Female patient with pain complaints in oral mucosa and presence of whitish plaques in bilateral buccal mucosa that exacerbate during periods of stress. The lesions were controlled by homeopathy medication, which leaded to regression of the lesions and provided comfort to the patient. Conclusion: The use of homeopathy in Dentistry is a new concept, which has been growing and proving to be effective, especially when related to autoimmune diseases, where the stress is a factor linked to the development/ exacerbation of the signs and symptoms.
ADSORPTION KINETICS OF FORMALDEHYDE FROM AQUEOUS SOLUTIONS BY CARBON POROUS MATERIALS IN PRESENCE OF PHOSPHORIC ACID
Authors: Ovchinikov Grygori A. , Gorski Valentina A. , Fasalova Ilyana I. , Kirilov Denis A. , Tukhvatshin Vadim S. , Talipov Rifkat F. , Kraikin Vladimir A.
Published: April 2017

In this paper we studied the adsorption kinetics of formaldehyde on porous carbon nanotubes and glassy carbon from aqueous solutions in the presence of phosphoric acid. The values of the external and internal mass transfer diffusion coefficients were obtained. We found the influence of the contribution of external mass transfer and internal diffusion on the process of formaldehyde adsorption. The time of establishment of sorption equilibrium was determined.For citation:Оvchinikov G.А., Gorski V.А., Fasаlova I.I., Кirilov D.А., Тukhvatshin V.S., Тalipov R.F., Кraikin V.А. Adsorption kinetics of formaldehyde from aqueous solutions by carbon porous materials in presence of phosphoric acid. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2017. V. 60. N 2. P. 4-6.
Zn/Cu SORBENT SYNTHESIS FOR SYN-GAS PURIFICATION FROM HYDROGEN SULFIDE
Authors: Doluda Valentin Yu. , Sulman Mikhail G. , Matveeva Valentina G. , Lakina Natalia V. , Sulman Esfir M.
Published: April 2017

The article is devoted to the synthesis of Zn/Cu sorbents and their study for the adsorption purification of synthesis gas from sulfur-containing compounds. The sorbents were synthesized using precipitation method, hydrothermal treatment, and mechanical grinding and microemulsion method. The article contains results of the physico-chemical studies of Zn/Cu sorbents with hydrogen chemisorption, nitrogen adsorption, X-ray photoelectron spectroscopy and electron microscopy. Studies showed that the most active sample, synthesized by microemulsion method, is characterized by highest surface area and highest concentration of surface active metal as compared with to other samples. The sample surface consists of 57-61 at. % Cu+2, Zn+2, Al+3 in form of oxides and 1.5-3.0 at. % Zn+2, Al+3 in form of aluminates. The sample synthesized by mechanical grinding of oxides showed the lowest activity in hydrogen sulfide sorption that explains by higher concentration of aluminates in the active face. The results of Zn/Cu sorption activity showed well correlation of hydrogen sulfide sorption capacity with sample surface area and surface concentration of active metal.Forcitation:Doluda V.Yu., Sulman M.G., Matveeva V.G., Lakina N.V., Sulman E.M. Zn/Cu sorbent synthesis for Syn-gas purification from hydrogen sulfide. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2017. V. 60. N 3. P. 61-66.
CALCULATION METHOD OF REAL ACTIVITY COEFFICIENTS OF IONS BY EXAMPLE OF HYDROGEN AND CHLORINE IONS IN AQUEOUS HCl SOLUTIONS
Authors: Fedorova Anastasia A. , Sharonov Nikolaiy Yu. , Filippov Dmitry V.
Published: April 2017

In this paper, we proposed a calculating method of the real individual activity coefficients. To calculate the energy of the ion, transfer through the interface we offered to use the value of the electrolyte solution surface potential, and to use electronegativity elements values for accounting contribution of the charge transfer energy between the surface and the bulk solution. To verify the proposed equation, the activity coefficients of hydrogen and chlorine ions in an aqueous HCl solutions were calculated over a wide range of electrolyte concentrations. The Debye-Hückel equation within 2nd approximation describes satisfactorily the dependence of the activity coefficient on the electrolyte concentration for anions, but not reproduce the minimum on the curve for cations. This dependence for the cation H⁺ is most extremal, and namely it is the reason of the choice of HCl for the model calculation. The calculated values were compared with the data obtained from the results of determining the activity coefficients by experimental method of "vertical jet" [1]. The comparison showed that our proposed equation reproduces the character of the concentration dependence of real activity coefficients not for anion only but for cation as well. Previously we found, that at low concentrations of solutes up to 0.1 mol/kg the values of some thermodynamic characteristics are strongly determined by not the volume concentration of the electrolyte, but the restructuring of the solvent structure in the surface layer of the solution, and therefore, the changing the energy state of the molecules at the interphase surface. Hence, the number of cations and anions at the surface in the areas of high and low bulk concentrations of electrolyte also differ greatly. Obviously, the small variation between calculated and experimental values of the real activity coefficients may be connected with necessity of using at calculation the bulk and surface concentration of ions. For citation:Fedorovа A.A., Sharonov N.Yu., Filippov D.V. Calculation method of real activity coefficients of ions by example of hydrogen and chlorine ions in aqueous HCl solutions. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2017. V. 60. N 3. P. 29-35.
BISMUTH (III) OXALATES OBTANING BY PRECIPITATION FROM NITRIC ACID SOLUTIONS
Authors: Timakova Evgeniya V. , Afonina Lubov I. , Bulina Natalya V. , Shatskaya Svetlana St. , Yukhin Yuri M.
Published: April 2017

This paper describes the precipitation of bismuth (III) oxalates from industrial nitric acid solutions. The process was carried out by adding of oxalic acid depending on the molar ratio of oxalate ions to bismuth (n), reaction temperature and the acidity of solution. The existence of four different crystal structures in the precipitation products was confirmed by the methods of X-ray diffraction, IR spectroscopy in combination with chemical analysis of solid phases. The compound with composition Bi(C2O4)OH is precipitated from nitric acid solutions in a wide range of temperatures at n = 1. Increasing n to 1.5 at room temperature leads to the formation of compound Bi2(C2O4)3∙7H2O. The precipitation of octahydrate bismuth oxalate Bi2(C2O4)3∙8H2O occurs when n = 2, process temperature of 80 °C and mixing time of 1 h. Further increasing in mixing time leads to recrystallization with formation of hexahydrate having the composition Bi2(C2O4)3∙6H2O. Latter compound can also be obtained by increasing n to 4. The degree of purification from impurity of metals such as Pb, Ag, Zn, Cu, Fe and the morphology of the bismuth (III) oxalates were also determined. The maximum degree of the removal of the impurities is shown to achieved by the precipitation of Bi2(C2O4)3∙8H2O as the desired product from industrial bismuth nitrate solutions. Bismuth oxalates with compositions Bi(C2O4)OH and Bi2(C2O4)3∙7H2O are the fine-grained powders, which could be used as precursors for the synthesis of the bismuth oxide materials.Forcitation:Timakova E.V., Afonina L.I., Bulina N.V., Shatskaya S.S., Yukhin Yu.M. Bismuth (III) oxalates obtaning by precipitation from nitric acid solutions. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2017. V. 60. N 3. P. 55-60.
Alcohol and drugs in adolescence: work process in health in school program
Authors: Coutinho Bruna Luiza Matos , Feitosa Amanda Alves , Diniz Camila Bantim Cross , Ramos José Lucas Souza , Ribeiro Larissa Zuqui , Amorim Sheila Rodrigues , Castro Caroline Feitosa Dibai de , Bezerra Italla Maria Pinheiro
Published: April 2017

Introduction: Adolescence is characterized as a transition period  between childhood and adult life that imposes great physical, cognitive and psychosocial changes. During that period,  the adolescent is exposed and vulnerable to the consumption of alcohol and drugs,  and has been an scenery where nurses who works in the  School Health  Programs (SHP) interact with them. In this sense, the interaction between education and health can influence adolescents to become questioners of the risks they are exposed and look  together for  better options to improve their quality of life. Objective: To analyse the perception and health practices of Nurses working in the School Health  Programs  of  prevention of alcohol and drugs during adolescence. Method: This is a descriptive and qualitative study carried out in the city of Juazeiro do Norte, Ceará, Brazil, with 18 nurses participating in the SHP, who implement actions with adolescents in schools. The data collection took place through a semi structured interview and their organization through thematic analysis. Results: The participants affirmed that the importance of their actions and work  is directed  to prevent the use of alcohol and drugs among adolescents, excluding the precepts of health promotion. They pointed out that the interaction between education and health is characterized as an effective strategy in the prevention of damages caused by the use of alcohol and drugs, emphasizing the participation of family members during the process of elaboration, application and continuity. It was also evidenced that the educational practices are performed mostly through lectures, characterizing a work centred on clinical, individual and curative practice. Conclusion: Nurses understand that the interaction between health and education is an effective strategy to prevent the use of alcohol and drugs in adolescents, emphasizing the importance of family participation in the process of construction and support of this context. However, it is possible to identify that the actions developed by these professionals are still restricted to modify some behaviours such as to improve their willing of   sharing  new knowledge.
The RNF168 paralog RNF169 defines a new class of ubiquitylated histone reader involved in the response to DNA damage
Authors: Kitevski-LeBlanc Julianne , Fradet-Turcotte Amélie , Kukic Predrag , Wilson Marcus D , Portella Guillem , Yuwen Tairan , Panier Stephanie , Duan Shili , Canny Marella D , van Ingen Hugo , Arrowsmith Cheryl H , Rubinstein John L , Vendruscolo Michele , Durocher Daniel , Kay Lewis E
Published: April 2017

Site-specific histone ubiquitylation plays a central role in orchestrating the response to DNA double-strand breaks (DSBs). DSBs elicit a cascade of events controlled by the ubiquitin ligase RNF168, which promotes the accumulation of repair factors such as 53BP1 and BRCA1 on the chromatin flanking the break site. RNF168 also promotes its own accumulation, and that of its paralog RNF169, but how they recognize ubiquitylated chromatin is unknown. Using methyl-TROSY solution NMR spectroscopy and molecular dynamics simulations, we present an atomic resolution model of human RNF169 binding to a ubiquitylated nucleosome, and validate it by electron cryomicroscopy. We establish that RNF169 binds to ubiquitylated H2A-Lys13/Lys15 in a manner that involves its canonical ubiquitin-binding helix and a pair of arginine-rich motifs that interact with the nucleosome acidic patch. This three-pronged interaction mechanism is distinct from that by which 53BP1 binds to ubiquitylated H2A-Lys15 highlighting the diversity in site-specific recognition of ubiquitylated nucleosomes.
Pushing the envelope
Authors: Wildschutte Julia H , Coffin John M
Published: April 2017

Primates have co-opted a viral gene to produce an envelope protein that prevents infection by the HERV-T virus and likely contributed to the extinction of this virus.
Endosymbiont interference and microbial diversity of the Pacific coast tick,Dermacentor occidentalis, in San Diego County, California
Authors: Gurfield Nikos , Grewal Saran , Cua Lynnie S. , Torres Pedro J. , Kelley Scott T.
Published: April 2017

The Pacific coast tick,Dermacentor occidentalisMarx, is found throughout California and can harbor agents that cause human diseases such as anaplasmosis, ehrlichiosis, tularemia, Rocky Mountain spotted fever and rickettsiosis 364D. Previous studies have demonstrated that nonpathogenic endosymbiotic bacteria can interfere withRickettsiaco-infections in other tick species. We hypothesized that withinD. occidentalisticks, interference may exist between different nonpathogenic endosymbiotic or nonendosymbiotic bacteria and Spotted Fever group Rickettsia (SFGR). Using PCR amplification and sequencing of therompA gene and intergenic region we identified a cohort of SFGR-infected and non-infectedD. occidentalisticks collected from San Diego County. We then amplified a partial segment of the 16S rRNA gene and used next-generation sequencing to elucidate the microbiomes and levels of co-infection in the ticks. The SFGRR. philipiistr. 364D andR. rhipicephaliwere detected in 2.3% and 8.2% of the ticks, respectively, viarompA sequencing. Interestingly, next generation sequencing revealed an inverse relationship between the number ofFrancisella-like endosymbiont (FLE) 16S rRNA sequences andRickettsia16S rRNA sequences within individual ticks that is consistent with partial interference between FLE and SFGR infecting ticks. After excluding theRickettsiaand FLE endosymbionts from the analysis, there was a small but significant difference in microbial community diversity and a pattern of geographic isolation by distance between collection locales. In addition, male ticks had a greater diversity of bacteria than female ticks and ticks that weren’t infected with SFGR had similar microbiomes to canine skin microbiomes. Although experimental studies are required for confirmation, our findings are consistent with the hypothesis that FLEs and, to a lesser extent, other bacteria, interfere with the ability ofD. occidentalisto be infected with certain SFGR. The results also raise interesting possibilities about the effects of putative vertebrate hosts on the tick microbiome.
Correlations between enhanced electron temperatures and electric field wave power in the Martian ionosphere
Authors: Fowler C. M. , Andersson L. , Peterson W. K. , Halekas J. , Nagy A. F. , Ergun R. E. , Espley J. , Mitchell D. L. , Connerney J. E. P. , Mazelle C. , Mahaffy P. R. , Jakosky B. M.
Published: April 2017

Statistical correlations are reported between measured electron temperatures and total electric field wave power (in the 2–100 Hz frequency range), at Mars' subsolar point ionosphere. The observations, made by the Mars Atmosphere and Volatile EvolutioN spacecraft, suggest that electric field wave power from the Mars‐solar wind interaction propagates through the Martian ionosphere and is able to heat ionospheric electrons by over 1000 K. Such heating can account for a substantial (but likely not complete) fraction of previously reported discrepancies between modeled and observed electron temperatures in Mars' upper ionosphere. Wave power is typically less than observable thresholds below altitudes of about 200 km, suggesting that energy is deposited into the ionosphere above this. Observed total wave powers range between 10−12 and 10−9 (V/m)2 and decrease with increasing integrated electron density (or decreasing altitude).
Albedo changes after fire as an explanation of fire‐induced rainfall suppression
Authors: Saha Michael V. , D'Odorico Paolo , Scanlon Todd M.
Published: April 2017

Observational evidence of rainfall suppression by fire has recently been documented in African drylands, but the underlying mechanism remains poorly understood. Here we investigate the extent to which fire‐induced changes in latent heat flux and albedo may inhibit boundary layer predisposition to convective rainfall. We use Modern‐Era Retrospective analysis for Research and Applications, Version 2 reanalysis data from the Kalahari region of Southern Africa to drive a low‐dimensional boundary layer growth model. We find that both increased albedo and, to a lesser extent, increased latent heat flux could result in less convective rainfall. The sensitivity to land surface feedbacks is higher earlier in the dry season and at drier sites. Finally, using Moderate Resolution Imaging Spectroradiometer fire and albedo data, we present novel evidence that increases in albedo after fire, or brightening, are common in regions receiving less than 850 mm of precipitation annually. This supports the idea that fire‐induced surface brightening is responsible for observed rainfall deficits after fire.
Identification of genes associated with histologic tumor grade of esophageal squamous cell carcinoma
Authors: Xing Jiaqiang , Liu Cuicui
Published: April 2017

The present study aimed to identify the genes associated with the histologic tumor grade of patients with esophageal squamous cell carcinoma (ESCC) and to provide valuable information for the identification of potential diagnostic biomarkers in ESCC. Tumor samples of ESCC patients retrieved from The Cancer Genome Atlas were divided into Grade 1 (well‐differentiated; G1), Grade 2 (moderately‐differentiated; G2) and Grade 3 (poorly‐differentiated; G3) groups in accordance with the clinical record of the tumor grade of ESCC patients. The genes associated with tumor grade were identified. The signaling pathways of identified genes were enriched from the Kyoto Encyclopedia of Genes and Genomes (KEGG). The diagnostic value of candidate genes was assessed by receiver operating characteristic analysis. We used the GSE23400 dataset generated from the Gene Expression Omnibus to examine the expression levels of candidate genes in ESCC tissues compared to matched mucosa tissues. In total, 440 genes positively correlated with tumor grade and 882 genes negatively correlated with tumor grade were identified. There were 310 differentially expressed genes (DEGs) between G1 and G2, 184 DEGs between G2 and G3, and 710 DEGs between G1 and G3. There were 1322 genes associated with tumor grade that were significantly enriched in pathways in cancer and the phospholipase D signaling pathway. Cyclin‐dependent kinase inhibitor 1A, golgin A7 family member B and transforming growth factor B1‐induced anti‐apoptotic factor 1 (TIAF1) had potential diagnostic value for discriminating ESCC patients with G1 from those with G3. TIAF1 was significantly down‐regulated in ESCC. The results of the present study comprise useful groundwork with respect to determining the tumorigenesis mechanism in ESCC and discovering potential diagnostic biomarkers for ESCC.
Carbon and Energy Metabolism
Authors: Thelander Mattias , Nilsson Anders , Ronne Hans
Published: April 2017

As in all organisms, the primary carbon metabolism inPhyscomitrella patensprovides the cells with free energy and building blocks for the biosynthesis of macromolecules. In particular, carbohydrates play a major role in growth and development in mosses as in other plants, since they are used for storage and allocation of carbon and energy. Reverse genetics inP. patenshas recently made it possible to address some key questions concerning the carbon and energy metabolism in plants. These questions include: How is the cellular energy status sensed in order to balance anabolism versus catabolism? How does carbon and energy allocation between cells and tissues work? How is whole‐plant energy homeostasis maintained? What is the role of sugars in regulating growth and development? And, finally, how similar or different are these processes in bryophytes and vascular plants? The recent release of the completeP. patensgenome sequence has now made it possible to address the last question using a comparative genomics approach.
The Role of Abscisic Acid in Stress Tolerance
Authors: Cho Sung Hyun , von Schwartzenberg Klaus , Quatrano Ralph
Published: April 2017

Mosses have evolved complex mechanisms to overcome abiotic stresses. The phytohormone abscisic acid (ABA) plays an important role in the establishment of stress tolerance in vascular plants as well as in bryophytes. ABA pre‐treatment greatly enhances tolerance to dehydration, cold temperature and osmotic stresses in the mossPhyscomitrella patens. The response to abiotic stresses and ABA inP. patensis accompanied by the accumulation of sugars along with morphological and physiological changes. Some of the genes regulated by ABA inP. patensare also controlled by the ABA‐signalling pathway in vascular plants. However, there are genes expressed in response to ABA and abiotic stress inP. patensthat are not found in seed plants. With the ability to easily delete and replace genes by homologous recombination, as well as a fully sequenced and assembled genome,P. patenswill provide an excellent model for studying stress biology in plants.
Gynoecium Patterning in Arabidopsis: A Basic Plan Behind a Complex Structure
Authors: Sundberg Eva , Ferrándiz Cristina
Published: April 2017

The Arabidopsis gynoecium consists of two congenitally fused carpels that, at maturity, form a bilocular chamber protecting the ovules and placentae produced by the meristematic regions of the carpel margins. This meristematic region also gives rise to a style capped with stigmatic papillae at the apical end of the developing gynoecia and a transmitting tract that connects the stigma to the ovule‐bearing chambers. Most data point towards a common evolutionary origin of leaves and carpels and suggest that leaves can be transformed to carpels by expressing only a few carpel identity genes. In this review, we have therefore approached the carpels from the leaf‐like organ hidden within by stressing the parallels between leaf and carpel development. Many of the genes with a role in leaf development were first identified by the effect their mutations cause in carpel development, suggesting that the regulatory networks may be more robust in leaves than in the more complex and evolutionary younger carpels. Similar genetic networks ensure the maintenance of adaxial–abaxial, proximal–distal and medial–lateral dichotomies in leaves and carpels. Data have emerged showing that crosstalk and redundancies are characteristics of these pathways, as well as a general interplay of hormonal balances, with auxin as a major morphogen.
Signal Achievements in Gibberellin Research: The Second Half‐Century
Authors: Sponsel Valerie M.
Published: April 2017

Chapter 1 briefly recounts the discovery of gibberellins (GAs) as natural products of the fungusGibberella fujikuroiin the early part of the twentieth century, and provides a historical overview of GA research from the late 1950s to the present day. It describes how biosynthetic pathways to GAs inGibberellaand higher plants were defined, and how stem length mutants of cereals and legumes were instrumental in establishing which GAs are biologically active and have hormonal function. The chapter presents an overview of the cereal aleurone system in which GA signalling was first studied, and describes how more recent use ofArabidopsisand rice led to the characterisation of a GA receptor (GID1) and downstream regulatory proteins (DELLAs). A number of DELLA‐interacting proteins are described, illustrating how it is that GA‐induced degradation of DELLAs facilitates downstream responses including cell elongation. Other ‘classical’ GA responses include germination and flowering in some species.
Gibberellin Biosynthesis in Higher Plants
Authors: Hedden Peter
Published: April 2017

Biosynthesis of the major biologically active gibberellins (GAs) in higher plants proceeds first in plastids via the tetracyclic diterpene hydrocarbonent‐kaurene, which is oxidised by membrane‐associated cytochrome P450 mono‐oxygenases to produce GA12and GA53on the endoplasmic reticulum. These intermediates are oxidised further by the soluble 2‐oxoglutarate‐dependent dioxygenases GA 20‐oxidase and GA 3‐oxidase to the active C19‐GA end products, GA4and GA1, respectively. The genes encoding most of the enzymes of the pathway have been identified in several species and the mechanisms by which their expression is regulated in response to developmental and environmental signals are being elucidated. The chapter will review the pathway, discuss the function of the biosynthetic enzymes and highlight recent understanding of their regulation.
Photoswitchable Sn‐Cyt c Solid‐State Devices
Authors: Nakamaru Satoshi , Scholz Frank , Ford William E. , Goto Yoshio , von Wrochem Florian
Published: April 2017

Electron transfer across proteins plays an important role in many biological processes, including those relevant for the conversion of solar photons to chemical energy. Previous studies demonstrated the generation of photocurrents upon light irradiation in a number of photoactive proteins, such as photosystem I or bacteriorhodopsin. Here, it is shown that Sn‐cytochrome c layers act as reversible and efficient photoelectrochemical switches upon integration into large‐area solid‐state junctions. Photocurrents are observed both in the Soret band (λ = 405 nm) and in the Q band (λ = 535 nm), with current on/off ratios reaching values of up to 25. The underlying modulation in charge‐transfer rate is attributed to a hole‐transport channel created by the photoexcitation of the Sn‐porphyrin.
Tri‐s‐triazine‐Based Crystalline Carbon Nitride Nanosheets for an Improved Hydrogen Evolution
Authors: Ou Honghui , Lin Lihua , Zheng Yun , Yang Pengju , Fang Yuanxing , Wang Xinchen
Published: April 2017

Tri‐s‐triazine‐based crystalline carbon nitride nanosheets (CCNNSs) have been successfully extracted via a conventional and cost‐effective sonication–centrifugation process. These CCNNSs possess a highly defined and unambiguous structure with minimal thickness, large aspect ratios, homogeneous tri‐s‐triazine‐based units, and high crystallinity. These tri‐s‐triazine‐based CCNNSs show significantly enhanced photocatalytic hydrogen generation activity under visible light than g‐C3N4, poly (triazine imide)/Li+ Cl–, and bulk tri‐s‐triazine‐based crystalline carbon nitrides. A highly apparent quantum efficiency of 8.57% at 420 nm for hydrogen production from aqueous methanol feedstock can be achieved from tri‐s‐triazine‐based CCNNSs, exceeding most of the reported carbon nitride nanosheets. Benefiting from the inherent structure of 2D crystals, the ultrathin tri‐s‐triazine‐based CCNNSs provide a broad range of application prospects in the fields of bioimaging, and energy storage and conversion.
Combined Macro/Nanoscale Investigation of the Chemical Vapor Deposition of Fe from Fe(CO)5
Authors: Aviziotis Ioannis G. , Duguet Thomas , Vahlas Constantin , Boudouvis Andreas G.
Published: April 2017

Experiments and computations are performed to model the chemical vapor deposition of iron (Fe) from iron pentacarbonyl (Fe(CO)5). The behavior of the deposition rate is investigated as a function of temperature, in the range 130–250 °C, and pressure in the range 10–40 Torr. Furthermore, the evolution of the surface roughness is correlated with the deposition temperature. By combining previously published mechanisms for the decomposition of Fe(CO)5, a predictive 3D macroscale model of the process is built. Additionally, a nanoscale and a multiscale framework are developed for linking the evolution of the surface of the film with the operating conditions at the reactor scale. The theoretical predictions from the coupled macro/nanoscale models are in very good agreement with experimental measurements indicating poisoning of the surface from carbon monoxide and decrease of the film roughness when temperature increases.
Correlation of Optical Properties, Electronic Structure, and Photocatalytic Activity in Nanostructured Tungsten Oxide
Authors: Ling Min , Blackman Christopher S. , Palgrave Robert G. , Sotelo‐Vazquez Carlos , Kafizas Andreas , Parkin Ivan P.
Published: April 2017

Tungsten trioxide nanorod arrays are deposited using aerosol assisted chemical vapor deposition. The electronic structure, defect chemistry, optical bandgap, and photocatalytic activity are found to vary progressively with nanorod length. Nanorods less than 1 µm in length show a widening of the optical bandgap (up to 3.1 eV), more disorder states within the bandgap, an absence of reduced tungsten cation states, and increased photocatalytic activity for destruction of a test organic pollutant (stearic acid) compared to nanorods of 2 µm length or greater which possessed bandgaps close to the bulk value for tungsten oxide (2.6–2.8 eV), the presence of reduced tungsten states (W4+), and lower photocatalytic activity. The results indicate that for maximum photocatalytic performance in organic pollutant degradation, tungsten oxide should be engineered such that the bandgap is widened relative to bulk WO3 to a value above 3 eV; although less photons are expected be absorbed, increases in the overpotential for oxidation reactions appear to more than offset this loss. It is also desirable to ensure the material remains defect free, or the defect concentration minimized, to minimize carrier recombination.