Relevant bibliographies by topics / PCNs

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  2. Dissertations / Theses
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  4. Book chapters
  5. Conference papers
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Academic literature on the topic 'PCNs'

Author: Grafiati
Published: 4 June 2021
Last updated: 11 February 2022

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Journal articles on the topic "PCNs"

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Wang, Chen, Kun Yan, Jun Wang, Siyu Chen, Jiaming Cui, and Rui Zhang. "Electrospun polyacrylonitrile/polyvinyl pyrrolidone composite nanofibrous membranes with high-efficiency PM2.5 filter." Journal of Polymer Engineering 40, no. 6 (July 28, 2020): 487–93. http://dx.doi.org/10.1515/polyeng-2019-0318.

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AbstractIn this research, we successfully fabricated a novel closed pore polyacrylonitrile (PAN)/polyvinyl pyrrolidone (PVP) composite nanofibrous membrane (PCNM) on the substrate of a commercial polypropylene window mesh. First, smooth and uniform PAN/PVP composite nanofibers (PCNs) were manufactured by blending PAN and PVP with a mass ratio of 5:5 during electrospinning. Subsequently, the prepared PCNs were hot pressed in a vacuum drying oven at a given temperature of 90°C. The morphology and filter efficiency of PCN and PCNM were investigated. It was found that hot-pressing treatment significantly affected the pore structure and orientation of PCNM, which contributed to its closed pore structure and good alignment. The filter efficiency results indicated that the hot-pressed PCNMs have excellent removal efficiency of up to 96.8% of fine particulate matter. This research demonstrates that PCNMs have potential as filters for indoor dust removal and will provide a new idea for the development of air filters.
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Stultz, Conner, and Frank L. Dorman. "Characterization of 9 Gas Chromatography Columns by Linear and Lee Retention Indices for Polychlorinated Biphenyls and Polychlorinated Naphthalenes." Separations 7, no. 3 (July 8, 2020): 38. http://dx.doi.org/10.3390/separations7030038.

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Polychlorinated biphenyls (PCBs) and naphthalenes (PCNs) are ubiquitous environmental contaminants with varying degrees of toxicity. There are hundreds of possible congeners with similar chemical characteristics, which make these compounds difficult to isolate in environmental samples. Historically, PCBs and PCNs were identified by using an Aroclor or Halowax mixture instead of the individual compounds, which was impractical because of limited numbers of individual standards. A retention index database was developed with all 209 PCBs and 36 PCNs to help identify these chemicals in environmental and biological matrixes. This study uses linear and Lee retention indices to identify all 209 PCBs and 36 PCNs on nine gas chromatography columns. The most toxic congeners, the 12 dioxin-like PCBs, were compared across all columns to determine which stationary phases gave the best selectivity for those compounds. Column selectivity was also examined to determine columns for confirmatory analyses and GC×GC separations. The Rxi-17SilMS demonstrated the most drastic difference in PCB selectivity and, to a lesser extent, PCNs when compared with the other eight columns and could work as a confirmatory column or as a 2nd dimension column for GC×GC separations.
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Morciano, Marcello, Katherine Checkland, Jonathan Hammond, Yiu-Shing Lau, and Matt Sutton. "Variability in size and characteristics of primary care networks in England: observational study." British Journal of General Practice 70, no. 701 (November 2, 2020): e899-e905. http://dx.doi.org/10.3399/bjgp20x713441.

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BackgroundGeneral practices in England have been encouraged by national policy to work together on a larger scale by creating primary care networks (PCNs). Policy guidance recommended that they should serve populations of 30 000–50 000 people to perform effectively.AimTo describe variation in the size and characteristics of PCNs and their populations.Design and settingCross-sectional analysis in England.MethodUsing published information from January 2020, PCNs were identified that contained <30 000, between 30 000–50 000, and >50 000 people. Percentiles were calculated to describe variation in size and population characteristics. PCN composition within each commissioning region was also examined.ResultsIn total, 6758 practices had formed 1250 PCNs. Seven hundred and twenty-six (58%) PCNs had the recommended population of 30 000–50 000 people. Eighty-four (7%) PCNs contained <30 000 people. Four hundred and forty (35%) PCNs contained >50 000 people. Thirty-four (3%) PCNs comprised just one practice and 77 (6%) PCNs contained >10 practices. Some PCNs contained more than double the proportions of older people and people with chronic conditions compared to other PCNs. More than half of the population were from very socioeconomically deprived areas in 172 (14%) PCNs. Only six (4%) of the 135 commissioning regions ensured all PCNs were in the recommended population range. All practices had joined a single PCN in three (2%) commissioning regions.ConclusionMore than 40% of the PCNs were not of the recommended size, and there was substantial variation in their composition and characteristics. This high variability between PCNs is a risk to their future performance.
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Noma, Yukio, Takashi Yamamoto, Robert Giraud, and Shin-ichi Sakai. "Behavior of PCNs, PCDDs, PCDFs, and dioxin-like PCBs in the thermal destruction of wastes containing PCNs." Chemosphere 62, no. 7 (February 2006): 1183–95. http://dx.doi.org/10.1016/j.chemosphere.2005.07.039.

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Jin, Lin, Yong-Zhen Yang, Jian-Feng Fan, and Bing-She Xu. "Effect of Surfactant Polyvinyl Pyrrolidone on the Properties of Microporous Carbon Nanospheres Reinforced Magnesium Matrix Composites." Nanomaterials 10, no. 11 (November 17, 2020): 2281. http://dx.doi.org/10.3390/nano10112281.

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Microporous carbon nanospheres (PCNS)-reinforced magnesium (Mg) composites were prepared using polyvinyl pyrrolidone (PVP) as surfactant and PCNS as reinforcement. The influence of PVP treatment and the effectiveness of PCNS on the mechanical properties of Mg-based composites were investigated. The results show that the PCNS can enhance the properties of the Mg matrix. Moreover, the PVP can effectively improve the dispersion of PCNS in the Mg matrix but had a negative influence on the tensile properties of composites. The MgO films with high tensile strength were produced between matrix and reinforcement after removing PVP, which effectively promotes the interface compatibility and improves the properties of the composite. The tensile yield strength and specific strength of PCNS-reinforced Mg matrix composite exhibited 177 MPa and 102.4 × 103 N∙m/kg, respectively, which were 77% and 78% higher than those of the Mg matrix.
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Liu, Zhitong, Ke Xiao, Jingjing Wu, Tianqi Jia, Rongrong Lei, and Wenbin Liu. "Distributions of Polychlorinated Naphthalenes in Sediments of the Yangtze River, China." Molecules 26, no. 17 (August 31, 2021): 5298. http://dx.doi.org/10.3390/molecules26175298.

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The pollution status of polychlorinated naphthalenes (PCNs) in the sediment of the Yangtze River Basin, Asia’s largest river basin, was estimated. The total concentrations of PCNs (mono- to octa-CNs) ranged from 0.103 to 1.631 ng/g. Mono-, di-, and tri-PCNs—consisting of CN-1, CN-5/7, and CN-24/14, respectively, as the main congeners—were the dominant homolog groups. Combustion indicators and principal component analysis showed that the emissions from halowax mixtures were the main contributor to PCNs in sediment, among most of the sampling sites. The mean total toxic equivalent (TEQ) was calculated to be 0.045 ± 0.077 pg TEQ/g, which indicates that the PCNs in sediments were of low toxicity to aquatic organisms. This work will expand the database on the distribution and characteristics of PCNs in the river sediment of China.
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Marchegiani, Giovanni, Stefano Andrianello, Chiara Miatello, Tommaso Pollini, Erica Secchettin, Giorgia Tedesco, Mirko D’Onofrio, Giuseppe Malleo, Claudio Bassi, and Roberto Salvia. "The Actual Prevalence of Symptoms in Pancreatic Cystic Neoplasms: A Prospective Propensity Matched Cohort Analysis." Digestive Surgery 36, no. 6 (December 12, 2018): 522–29. http://dx.doi.org/10.1159/000495039.

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Background: The prevalence of symptoms in pancreatic cystic neoplasms (PCNs) is mainly based on retrospective surgical series. The aim of this study is to describe the actual prevalence of symptoms in PCNs under surveillance. Methods: Patients with PCNs under surveillance observed from 2015 to 2017 were submitted to magnetic resonance imaging (MRI) and a specific interview. An identical survey was carried out on a control population matched for age, sex, and comorbidities in which any pancreatic disease was excluded by MRI. Results: Two groups of 184 individuals were compared. Patients with PCNs have a similar prevalence of abdominal pain when compared to controls (35.2 vs. 28.8, p = 0.2). PCNs in the distal pancreas experienced a significantly increased prevalence of abdominal pain (42.3 vs. 28.8%, p = 0.04), whereas size and presumed connection with the ductal system did not affect the prevalence of abdominal pain. PCNs associated with abdominal pain did not differ in terms of clinical and radiological features from asymptomatic ones. Conclusion: Patients with PCNs under surveillance have a similar prevalence of abdominal pain when compared to a matched population of controls. Abdominal pain might not correlate with radiological signs of malignancy.
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Keegan, Mathew James, and Bharat Paranandi. "Diagnosis and management of pancreatic cystic neoplasms." Frontline Gastroenterology 10, no. 3 (March 1, 2019): 300–308. http://dx.doi.org/10.1136/flgastro-2018-101122.

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This review outlines the current classification of pancreatic cystic lesions, with a particular emphasis on pancreatic cystic neoplasms (PCNs). It will describe the diagnostic approach to PCNs, with reference to clinicopathological features, cross-sectional radiology and endoscopic ultrasound. This review will conclude with an evidence-based discussion of the management of PCNs focused on recent clinical guidelines.
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Kaupp, Heike, and Michael S. McLachlan. "Gas/particle partitioning of PCDD/Fs, PCBs, PCNs and PAHs." Chemosphere 38, no. 14 (June 1999): 3411–21. http://dx.doi.org/10.1016/s0045-6535(98)00554-2.

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Sikdar, Debashis, Kalpana S. Katti, and Dinesh R. Katti. "Molecular Interactions Alter Clay and Polymer Structure in Polymer Clay Nanocomposites." Journal of Nanoscience and Nanotechnology 8, no. 4 (April 1, 2008): 1638–57. http://dx.doi.org/10.1166/jnn.2008.18228.

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In this work, using photoacoustic Fourier transform infrared spectroscopy (FTIR) we have studied the structural distortion of clay crystal structure in organically modified montmorillonite (OMMT) and polymer clay nanocomposites (PCN). To study the effect of organic modifiers on the distortion of crystal structure of clay, we have synthesized OMMTs and PCNs containing same polymer and clay but with three different organic modifiers (12-aminolauric acid, n-dodecylamine, and 1,12-diaminododecane), and conducted the FTIR study on these PCNs. Our previous molecular dynamics (MD) study on these PCNs reveals that significant nonbonded interactions (van der Waals, electrostatic interactions) exist between the different constituents (polymer, organic modifier, and clay) of nanocomposites. Previous work based on X-ray diffraction (XRD) and differential scanning calorimetry (DSC) on the same set of PCNs shows that crystallinity of polymer in PCNs have changed significantly in comparison to those in pristine polymer; and, the nonbonded interactions between different constituents of PCN are responsible for the change in crystal structure of polymer in PCN. In this work to evaluate the structural distortion of crystal structure of clay in OMMTs and PCNs, the positions of bands corresponding to different modes of vibration of Si—O bonds are determined from the deconvolution of broad Si—O bands in OMMTs and PCNs obtained from FTIR spectra. Intensity and area under the Si—O bands are indicative of orientation of clay crystal structures in OMMTs and PCNs. Significant changes in the Si—O bands are observed from each vibration mode in OMMTs and PCNs containing three different organic modifiers indicating that organic modifiers influence the structural orientation of silica tetrahedra in OMMTs and PCNs. Deconvolution of Si—O bands in OMMTs indicate a band at ∼1200 cm−1 that is orientation-dependent Si—O band. The specific changes in intensity and area under this band for OMMTs with three different organic modifiers further confirm the change in structural orientation of silica tetrahedra of OMMTs by organic modifiers. Thus, from our work it is evident that organic modifiers have significant influence on the structure of polymer and clay in PCNs. It appears that in nanocomposites, in addition to strong interactions at interfaces between constituents, the structure of different phases (clay and polymer) of PCN are also altered, which does not occur in conventional composite materials. Thus, the mechanisms governing composite action in nanocomposites are quite different from that of conventional macro composites.
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Dissertations / Theses on the topic "PCNs"

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Correia, Adriana Paes de Jesus. "Letramento, alfabetização e trabalho do professor representados nos PCNs." Pontifícia Universidade Católica de São Paulo, 2007. https://tede2.pucsp.br/handle/handle/13874.

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This research aims at checking the way literacy is approached on the National Curricular Parameters PCNs (Brazil, MEC/SEF, 2000) and the representations about the work of the teacher in relation to literacy built on this document. This document was chosen as analysis object because we think the work of the teacher is conducted and influenced by prefigurative texts, in which high-ranking staff members show them what to do, and also because the PCNs are regarded as the referencial prefigurative text for the curricular organization of the Educational System in Brazil. Initially, we present the main theoretical discussions about the question of literacy so that we can, afterwards, resort to a wider vision on the work of the teacher, derived from Activity Ergonomy (Amigues, 2002, 2004; Saujat, 2004; Faïta, 2004) and from Clinique de l activité (Clot, 1999), which allowed us to amplify the general theoretical/ methodological framework adopted: the Sociodiscursive Interactionism - ISD (Bronckart, 1997/2003; 2004; 2006), which proposes to develop a Human Science , taking acting as unit of analysis and attributing to language a fundamental role in human functioning and development. The methodological procedures included the interactional social-historical contextualization for the production of PCNs, a survey of their global characteristics, the selection of segments which approach the question of literacy and the analysis of these segments at organizational, enunciative and semantic levels, from the analysis categories supplied by the theoretical-methodological framework itself (ISD), including the procedures recently developed by Machado & Bronckart (2005) and their academic collaborators. The analysis results showed that literacy is represented on the PCNs as a byproduct of a social practice related to reading and writing. However, the term is not recurrent on the PCNs, not being regarded as main topic. For the work with literacy in the classroom there is, in the analysed segments, no attribution of a specific role to the teacher. On the other hand, the question of literacy is taken widely, either associated with the use of language in active comprehension, expression and communication practices, or related to literacy acquisition. The teacher s role in relation to literacy can be inferred when the teaching practice aims and some of the teacher s functions are indicated, but neither the possible different phases of the teacher s work are thematized, nor the way the teacher should develop his/her activities and the procedures to be adopted to reach such aims are made explicit. We conclude, after all, that the teacher is prescribed, predominantly, a cognitive acting, being proposed to adopt a teaching-learning conception considered innovative and more adequate by the PCNs, which is presented as the only possible and true one
O objetivo desta pesquisa é verificar de que forma a questão do letramento e da alfabetização é abordada nos Parâmetros Curriculares Nacionais PCNs (Brasil, MEC/SEF, 2000) e as representações sobre o trabalho do professor em relação ao letramento e a alfabetização construídas nesse documento. Esse documento foi escolhido como objeto de análise por considerarmos que o trabalho do professor é regido e influenciado por textos prefigurativos, nos quais as instâncias superiores lhe indicam o que deve realizar, e porque os PCNs constituem-se como o texto prefigurativo que é referencial para organização curricular do Sistema Educacional no Brasil. Inicialmente, apresentamos as principais discussões teóricas sobre a questão do letramento, para, a seguir, recorrermos a uma visão ampliada de trabalho do professor, oriunda da Ergonomia da Atividade (Amigues, 2002, 2004; Saujat, 2004; Faïta, 2004) e da Clínica da Atividade (Clot, 1999), que permitiu-nos ampliar o quadro teórico-metodológico geral adotado: o Interacionismo Sociodiscursivo - ISD (Bronckart, 1997/2003; 2004; 2006), que se propõe a desenvolver uma Ciência do Humano , tomando o agir como unidade de análise e atribuindo à linguagem papel fundamental no funcionamento e no desenvolvimento humano. Os procedimentos metodológicos incluíram a contextualização sócio-histórica interacional da produção dos PCNs, o levantamento de suas características globais, a seleção de segmentos que abordam a questão do letramento e da alfabetização e a análise desses segmentos nos níveis organizacional, enunciativo e semântico, a partir das categorias de análise fornecidas pelo próprio quadro teórico-metodológico (ISD), incluindo os procedimentos recentemente desenvolvidos por Machado & Bronckart (2005) e seus colaboradores. Os resultados das análises mostraram que o letramento é representado nos PCNs como produto de uma prática social relacionada à leitura e escrita. Contudo, o termo não é recorrente nos PCNs, não sendo tratado como tema principal. Para o trabalho com letramento em sala de aula não há, nos segmentos analisados, a atribuição de um papel específico ao professor. Por outro lado, a questão da alfabetização é tratada de forma mais ampla, ora associada ao uso da linguagem em práticas de compreensão ativa, expressão e comunicação, ora relacionada à aquisição da escrita alfabética. O papel do professor, em relação à alfabetização, pode ser inferido quando se indicam as finalidades das práticas de ensino e algumas das funções do professor, mas não são tematizadas as diferentes fases possíveis do trabalho docente, nem o modo como ele deve desenvolver as atividades e nem os procedimentos a serem adotados para alcançar as finalidades tão bem explicitadas. Concluímos, enfim, que o que se prescreve ao professor, predominantemente, é um agir cognitivo, propondo-se que ele assuma uma concepção de ensino-aprendizagem considerada inovadora e mais adequada pelos PCNs, que é apresentada como se fosse a única possível e verdadeira
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Antonio, Clésio Acilino. "Ordenamentos político-pedagógicos, parâmetros curriculares nacionais (PCNS) e educação física escolar." Florianópolis, SC, 2000. http://repositorio.ufsc.br/xmlui/handle/123456789/78429.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências da Educação.
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O trabalho debate a política de reforma educacional e, em particular, o currículo como um de seus elementos. A análise das justificativas oficiais do Estado brasileiro na promulgação dos novos conhecimentos ou valores na socialização dos cidadãos. O currículo, compreendido também como programas escolares, é colocado em destaque, já que passa por uma avaliação em sua própria lógica de prescrição do ensino. Sua nova definição, criação, seleção, organização e distribuição de conhecimentos e valores foram visualizados diante da estreita relação social, seus processos e ajustes político-culturais. O currículo é posto como um mecanismo articulado com a necessidade de orientar o trabalho interno da escola, visto à atual orientação da política educacional, intrinsecamente veiculada à tendência de localizar os problemas da educação nesse âmbito. A definição do currículo, em projeção nacional, via PCNs, é analisada como tendência da homogeneização de um discurso "do quê", "como ensinar" e os valores necessários como eixos que arbitram sobre a condição de cidadania; as novas identidades sociais e culturais. No debate de uma área específica, a Educação Física, enfocamos em compreender como esta área está inserida no desenho curricular dos PCNs. Para compreendê-la nesse desenho localizamos alguns debates críticos já desenvolvidos pela comunidade intelectual e profissional da Educação Física, quando em análises dirigidas ao conteúdo dessa proposta. Procuramos, também, não desconsiderar as relações que são próximas do debate da identidade pedagógica da Educação Física Escolar brasileira, justamente porque o processo do qual se origina traz sentidos diferenciados ao conteúdo da proposta analisada.
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Khan, Khudeja. "DATA COMMUNICATION WITH A NANO-SATELLITE USING SATELLITE PERSONAL COMMUNICATION NETWORKS (S-PCNS)." Master's thesis, University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2780.

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Satellites typically communicate with locations on the ground to receive commands and send data back. Establishing reliable communications generally requires dedicated ground stations, which in turn require hardware and expertise. Developers of nano-satellites, however, may not have the expertise or resources necessary for establishing a dedicated ground station. Therefore, the use of an existing communication system, such as the Satellite Personal Communication Networks (S-PCNs), is attractive. Another shortcoming of the fixed ground stations, already available, is that they are normally only able to communicate with Low Earth Orbit (LEO) nano-satellites four times per day (two10-minute windows separated by 90 minutes, followed 12 hours later by two more such 10-minute windows). This drawback is also overcome by the use of S-PCNs which provide increased access times, smaller gaps in contact between the satellites and ground stations, and easier tracking of satellite health. In this thesis, the capabilities of S-PCNs for communications with a nano-satellite are explored. Software simulation and analysis have been performed to assess system performance. Ground testing of the hardware is done to understand the use of such systems for small satellites.
M.S.
School of Electrical Engineering and Computer Science
Engineering and Computer Science
Electrical Engineering MSEE
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Guimarães, Nilma. "A abordagem dos gêneros argumentativos nos livros didáticos de língua materna: diretrizes e perspectivas." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/48/48134/tde-25062007-113721/.

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Este trabalho de pesquisa pretendeu investigar supostas mudanças ocorridas nos livros didáticos de Língua Portuguesa, a partir da publicação dos PCNs e da implementação do Programa Nacional do Livro Didático (PNLD) em meados da década de 1990. Estabeleceram-se como objetivos gerais verificar de modo os gêneros textuais vêm sendo abordados nesses manuais, sobretudo nas atividades de produção textual; e contribuir, dessa maneira, com a melhoria da qualidade dos LDs distribuídos aos alunos da rede pública de ensino. Como objetivos específicos, procurou-se verificar qual o espaço e a abordagem dispensados aos gêneros da esfera argumentativa nas orientações de produção textual apresentadas atualmente nos LDs, a partir da análise das coleções didáticas, destinadas a alunos de 5.ª e 6.ª séries do ensino fundamental, mais bem avaliadas pelo PNDL 2005; investigar de como esses gêneros vêm sendo trabalhados nas propostas de produção de texto, no que se refere às orientações quanto às condições de produção e às estratégias de textualização (planificação, revisão e reelaboração do texto); além, é claro, de constatar se essas atividades promovem de fato o desenvolvimento tanto das capacidades lingüístico-discursivas quanto das capacidades argumentativas. Levantamos a hipótese de que, se houve realmente mudanças em relação ao ensino-aprendizagem de língua materna a partir do estabelecimento dos gêneros do discurso como objetos de ensino, conforme preceituam os PCNs, deve ter ocorrido também o surgimento de uma outra postura em relação à abordagem dos gêneros argumentativos, sobretudo quanto à conscientização da necessidade de se trabalhar esses gêneros desde o início do processo de escolarização, uma vez que o desenvolvimento da capacidade de argumentar revela-se de fundamental importância como instrumento de cidadania e de resistência à manipulação ideológica. Para isso, buscou-se como instrumental teórico-metodológico os pressupostos da psicologia social de Vygotsky, sobretudo no que concerne ao papel da interação social para o desenvolvimento cognitivo e para a constituição de subjetividades; os estudos realizados no âmbito da lingüística textual; as reflexões advindas da análise do discurso, principalmente acerca da teoria dos gêneros, da dialogia e da polifonia de Bakhtin; as pesquisas aplicadas no âmbito da psicologia e das ciências da educação, realizadas por Schneuwly e seus colaboradores do Grupo de Genebra (Dolz, Pasquier e Bronckart), que têm como objetivo o desenvolvimento de seqüências didáticas para o ensino-aprendizagem dos gêneros do discurso como instrumentos de comunicação e interação social, promovendo a mediação didática entre a teoria do interacionismo sociodiscursivo (ISD) e as práticas de linguagem; e, por fim, a teoria moderna da argumentação ou Nova retórica, fundada por Perelman.
This research work aimed at investigating alleged changes in Portuguese language textbooks following the publication of the PCNs (Brazilian curricular parameters) and the implementation of the PNLD (National Textbook Program) in the mid-1990\'s. The general objectives included analyzing how these manuals have been dealing with text genres, specifically in activities concerning text production, thus helping to improve the quality of textbooks distributed to public school students. Specific objectives included examining the space reserved to and the approach used in argumentative genres pertaining to text production processes currently found in textbooks for 5th and 6th grades, as these materials were better assessed by the PNLD 2005; investigating how these genres have been used in text production proposals with respect to production conditions and textualization strategies (text planning, revision and rewriting); and, of course, checking whether those activities really foster the development of discursive-linguistic and argumentative capabilities. We claim that if changes occurred indeed in mother-tongue teaching-learning processes after discourse genres were established as teaching objectives, as stated in the PCNs, a new attitude also must have emerged in relation to the approach to argumentative genres, specially with respect to an awakening to the need to work with these genres from the beginning of the school experience, since the development of argumentative abilities is an essential tool in facing ideological manipulation. The theoretical-methodological basis for our work can be found in Vygotsky\'s social psychology, especially in what concerns the role of social interaction in cognitive development and in the construction of subjectivities; in studies conducted in the field of textual linguistics; in reflections resulting from discourse analysis, mainly with respect to genre theory, Bakhtin\'s dialogy and polyphony; in research works in psychology and education science conducted by Schneuwly and his collaborators from the Geneva Group (Dolz, Pasquier, and Bronckart) and which aim at developing didactic sequences for the teaching-learning of discourse genres as instruments of communication and social interaction, allowing for a didactic mediation between socio-discursive interactionism theory and language practices; and, lastly, in the modern argumentative theory - or New Rhetoric - introduced by Perelman.
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Leyva, Carhuatanta Gladys Norma. "Os PCNs e suas tendencias no ensino fundamental em escolas da Rede Publica de Campinas." [s.n.], 2002. http://repositorio.unicamp.br/jspui/handle/REPOSIP/251024.

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Orientador: Nilson Joseph Demange
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Educação
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Mestrado
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Ladeia, Rita. "Antologias de contos na complementação de livros didaticos de ingles : os PCNs em enfoque discursivo." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/269662.

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Orientador: Silvana Mabel Serrani
Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Estudos da Linguagem
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Resumo: Este trabalho tem por objetivo estudar critérios de complementação de livros didáticos para o ensino de inglês como língua estrangeira na grade curricular de Ensino Médio. A proposta de complementação baseia-se em princípios multidimensional-discursivos e utiliza antologias de contos como fonte deflagradora de práticas pedagógicas. Considerando as diretrizes legais oficializadas pelos Parâmetros Curriculares Nacionais, defendemos que planejamentos de cursos de línguas tenham como referencial teórico o entendimento da língua enquanto discurso. Num primeiro momento, discutimos as concepções de língua, discurso, ensino e aprendizagem que norteiam a adoção de livros didáticos e a escolha de recursos complementares, do ponto de vista de professores e escolas. O trabalho conta com uma análise multidimensional-discursiva de livros didáticos adotados por escolas particulares da cidade de São Paulo. Foram pesquisadas as escolas obtiveram avaliação de aprendizagem superior a 70% (setenta por cento), de acordo com o Exame Nacional do Ensino Médio (ENEM) do ano de 2005. Apresenta também exemplos de complementação dos referidos livros, a partir de antologias de contos brasileiros e norte- americanos. Finalmente, relatamos um estudo de caso com foco na formação de professores e discutimos algumas mudanças nas formações imaginárias e discursivas dos professores em relação à aplicabilidade de enfoques multidimensionais e discursivos na aula de língua estrangeira, bem como algumas de suas resistências ao processo de mudança
Abstract: This paper aims at studying criteria for complementing English as a foreign language course books in senior high-school curricula. The proposal for complementation of materials is based on multidimensional-discursive principles and uses anthologies of short stories as source of material development. Taking into consideration the directions by the National Curriculum Framework, known as PCNs, we defend that the planning of language courses be based on the understanding of language as discourse. At first we discuss the conceptions of language, discourse, teaching and learning that guide the choice of books and complementary materials, from the point of view of teachers and schools. The research counts on a multidimensional-discursive analysis of some of the books adopted by private schools in the city of São Paulo which reached an evaluation superior to 70% (seventy per cent), according to the National Exam that measures learning results in Brazilian Senior High-schools, known as ENEM. The data used is based on the statistics from the year 2005. It also includes examples of complementation of the referred books based on anthologies of Brazilian and American Short Stories. Finally, we report a case study aiming at teaching development and we discuss some changes in the teacher¿s representations concerning the applicability of multidimensional-discursive approaches in foreign language classes, as well as their resistance to the changing process
Mestrado
Lingua Estrangeira
Mestre em Linguística Aplicada
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Delfino, Antonia Ieda [UNESP]. "O espaço-representação, investigação e contextualização: uma análise dos PCNs de geografia do ensino médio." Universidade Estadual Paulista (UNESP), 2007. http://hdl.handle.net/11449/96770.

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Esse trabalho é resultado da análise teórico-metodológica dos Parâmetros Curriculares Nacionais do Ensino Médio (PCNEMs) de Geografia. Foi desenvolvido a partir da abordagem do conceito de espaço, considerado o conceito central pelo documento e outros conceitoschave como paisagem, lugar, território e territorialidade, escala, globalização, técnicas e redes. Para melhor contextualizar esses conceitos no Ensino Médio, foi traçado um perfil desse nível de ensino no Brasil bem como sua finalidade, o desenvolvimento de competências e habilidades específicas. O desenvolvimento do trabalho foi feito a partir da pesquisa bibliográfica, utilizando como método de abordagem o dialético. O resultado da análise demonstra uma revisão teórico-conceitual da Geografia dos PCNEMs, pouco profunda, ao citar os movimentos teórico-conceituais que a ciência geográfica passou no século XX.. Quanto à questão metodológica há ausência de uma abordagem que favoreça o desenvolvimento de uma Geografia no Ensino Médio que compreenda o seu objeto de estudo, o espaço geográfico, em suas várias manifestações levando o aluno a uma prática crítica e reflexiva da sua relação com o meio no qual está inserido.
This thesis is the result of the theoretical-methodological analysis of the National Curriculum Parameters from High School (Parâmetros Curriculares Nacionais do Ensino Médio - PCNEMs - in Portuguese ) in Geography. It was developed starting from the approach of the concept of space, considered the main concept in this thesis and others key-concepts such as landscape, place, territory and territoriality, scale, globalization, techniques and network. For a best context of these concepts in High School, a profile of this knowledge grade in Brazil and also its objectives were made, the development of its competences and specific abilities. The development of this thesis was made starting from bibliographic research, using as the approach method the dialectic. The result of the analysis shows a review of the theoretical and conceptual Geography of PCNEMs, little deeper, to cite the movements theoretical and conceptual that science geographical happened in the twentieth century. Regarding the methodological issue there is an absence of approach that benefits the development a High School Geography that comprehend its object of study, the geographical space, in its various manifestations leading the student to a critic and reflexive practice of his relation with the environment in which he is inserted.
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Delfino, Antonia Ieda. "O espaço-representação, investigação e contextualização : uma análise dos PCNs de geografia do ensino médio /." Presidente Prudente : [s.n.], 2007. http://hdl.handle.net/11449/96770.

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Orientador: Fátima Aparecida Gomes Marin
Banca: Gilza Maria Zauhy Garms
Banca: Marcia Ajala Almeida
Resumo: Esse trabalho é resultado da análise teórico-metodológica dos Parâmetros Curriculares Nacionais do Ensino Médio (PCNEMs) de Geografia. Foi desenvolvido a partir da abordagem do conceito de espaço, considerado o conceito central pelo documento e outros conceitoschave como paisagem, lugar, território e territorialidade, escala, globalização, técnicas e redes. Para melhor contextualizar esses conceitos no Ensino Médio, foi traçado um perfil desse nível de ensino no Brasil bem como sua finalidade, o desenvolvimento de competências e habilidades específicas. O desenvolvimento do trabalho foi feito a partir da pesquisa bibliográfica, utilizando como método de abordagem o dialético. O resultado da análise demonstra uma revisão teórico-conceitual da Geografia dos PCNEMs, pouco profunda, ao citar os movimentos teórico-conceituais que a ciência geográfica passou no século XX.. Quanto à questão metodológica há ausência de uma abordagem que favoreça o desenvolvimento de uma Geografia no Ensino Médio que compreenda o seu objeto de estudo, o espaço geográfico, em suas várias manifestações levando o aluno a uma prática crítica e reflexiva da sua relação com o meio no qual está inserido.
Abstract: This thesis is the result of the theoretical-methodological analysis of the National Curriculum Parameters from High School (Parâmetros Curriculares Nacionais do Ensino Médio - PCNEMs - in Portuguese ) in Geography. It was developed starting from the approach of the concept of space, considered the main concept in this thesis and others key-concepts such as landscape, place, territory and territoriality, scale, globalization, techniques and network. For a best context of these concepts in High School, a profile of this knowledge grade in Brazil and also its objectives were made, the development of its competences and specific abilities. The development of this thesis was made starting from bibliographic research, using as the approach method the dialectic. The result of the analysis shows a review of the theoretical and conceptual Geography of PCNEMs, little deeper, to cite the movements theoretical and conceptual that science geographical happened in the twentieth century. Regarding the methodological issue there is an absence of approach that benefits the development a High School Geography that comprehend its object of study, the geographical space, in its various manifestations leading the student to a critic and reflexive practice of his relation with the environment in which he is inserted.
Mestre
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Stürmer, Rosangela. "Religiosidade popular : uma análise dos PCNs do Ensino Religioso em confronto com a práxis pedagógica." Faculdades EST, 2008. http://tede.est.edu.br/tede/tde_busca/arquivo.php?codArquivo=77.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Estudo que objetiva analisar a relação entre religiosidade popular e os Parâmetros Curriculares Nacionais do Ensino Religioso em confronto com a práxis pedagógica. A primeira parte aborda o surgimento da religiosidade popular procurando conceituá-la. Para isso foram realizadas no Grupo de pesquisa: Religiosidade Popular do Instituto de Teologia e Pastoral ITEPA observações de manifestações de religiosidade popular em diferentes locais e dessas observações foram realizados os diários de bordo. A pergunta sobre o que faz o ser humano buscar expressar de alguma forma sua religiosidade, assim como a busca de transcendência e o valor ao sagrado, finalizam esta primeira parte. A segunda parte procura compreender a religiosidade popular num sentido antropológico. Aborda a relação que o ser humano tem com o sagrado fortemente presente na religiosidade popular. Sendo que o sagrado é uma categoria presente em todas as religiões e é principalmente na religiosidade popular que as pessoas o expressam de forma bem criativa, com simplicidade, sem se preocuparem com os discursos teológicos das instituições. Neste sentido, traz-se duas experiências em sala de aula para mostrar que as manifestações de religiosidade popular estão presentes no cotidiano escolar. A partir das respostas encontradas nesta parte do trabalho surgem as questões referentes às crenças dos docentes e discentes e a relação com o conhecimento. Por isso é importante rever de que modo os Parâmetros Curriculares Nacionais do Ensino Religioso apresentam o tema da religiosidade popular. Através de uma experiência em sala de aula constata-se que há uma tensão entre crença e conhecimento. Para tentar contornar essa problemática propõe-se a pedagogia da pergunta, a qual vem demonstrar que o mais importante não são as respostas, mas os questionamentos.
Study which aims to examine the relationship between popular religiosity and National Curricular Parameters of Religious Education in confrontation with the pedagogical practice. The first part deals with the emergence of popular religiosity. For that were held in Group research: Religiosities People's Institute of Theology and Pastoral - ITEPA observations of expressions of popular religiosity in different places and these comments were made the logs. The question about what makes human beings seek in any way express their religiosity and the search for transcendence and value to the sacred end this first part. The second part seeks to understand the popular religiosity in an anthropological sense. It addresses the relationship that the human being has with the sacred strongly present in popular religiosity. Since the sacred is a category present in all religions and is mainly in popular religiosity that people express so well the creative, with simplicity without caring about the speeches theological institutions. Therefore if brings two experiences in the classroom to show that the manifestations of popular religiosity are present in the daily school. From the answers found in this part of the work is that the questions arise concerning the beliefs of teachers and students in connection with the knowledge. So it is important to review how the National Curricular Parameters of Religious Education present the theme of popular religiosity. Through an experiment in the classroom noted that there is a tension between belief and knowledge. To try to circumvent this problem is proposed to pedagogy of the question, which comes to show that the most important are not the answers but the questions.
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Nascimento, Iscarlety Matias do. "Abordagem da gramática nos livros didáticos de língua portuguesa: os parâmetros curriculares nacionais promoveram mudanças?" Universidade Federal de Goiás, 2018. http://repositorio.bc.ufg.br/tede/handle/tede/9006.

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The study entitled Abordagem da gramática nos livros didáticos de Língua Portuguesa: Os Parâmetros Curriculares Nacionais promoveram mudanças? (Grammatical approach in textbooks in Portuguese: Did the National Curricular Parameters promote changes?) aims to discuss grammar teaching in Portuguese language textbooks, seeking to analyze whether the National Curricular Parameters (1998) are followed in the proposal of teaching Portuguese in textbooks. To do this, we describe the document and perform an explanation about the orientation of contents in two axes: use and reflection. We highlight this organization, the practice of linguistic analysis and its discursive activities. Thus, the main interest of this study is to verify if the proposals of the PCNs are followed, thus promoting changes in a prescriptive language teaching. n order to carry out this verification, we directed our analyzes from two textbooks, one of them from1975, a material prior to the document, and the others subsequent to the PCNs and reviewed in the National Textbook Program of 2014. We consider for the analysis, to understand that Portuguese books are discursive genres. To defend this discursive view, we start with Bakhtin's theory and its circle. In addition, we also assume that the book is a support, with the intention of explaining that the texts that enter the didactic materials change of function, being seen through a didactic functionality. We also discuss the conceptions of language, language, grammar, text and teaching assumed by the authors of the textbooks. We try to analyze the books through a discursive look, considering the documentary approach of a qualitative research. Our analysis of the documents was by means of inferences that sought to reflect on the way in which the teaching of grammar is seen in the textbooks of Portuguese. The results presented lead us to believe that there were few changes in grammar teaching after the implementation of PCNs, and a traditional study prevails to the detriment of a reflexive analysis of the language in use.
O trabalho intitulado Abordagem da gramática nos livros didáticos de Língua Portuguesa: Os Parâmetros Curriculares Nacionais promoveram mudanças? objetiva discutir sobre a abordagem da gramática nos livros didáticos de língua portuguesa, buscando analisar se os Parâmetros Nacionais Curriculares (1998) são seguidos na proposta de ensino de português nos livros didáticos. Para isso, descrevemos o documento e realizamos uma explanação sobre as orientações dos conteúdos em dois eixos: uso e reflexão. Destacamos dessa organização, a prática de análise linguística e suas atividades discursivas. Dessa forma, o principal interesse deste estudo é verificar se as propostas dos PCNs são seguidas, promovendo, assim, mudanças em um ensino prescritivo de língua. Para realizarmos essa verificação, direcionamos nossas análises a partir de dois livros didáticos, sendo um deles de 1975, Comunicação, expressão e criatividade em português, um material anterior ao documento, que serve como comparativo em relação ao outro, posterior aos PCNs. Português Linguagens dos anos de 1998 e 2014 é nosso segundo livro de análise. Ele é resenhado no Programa Nacional do Livro Didático e é o mais distribuído nas escolas públicas brasileiras. Ainda, consideramos para a análise, entender que os livros de português são gêneros discursivos. Para defendermos essa visão discursiva, partimos da teoria de Bakhtin e seu círculo. Desse modo, assumimos a perspectiva dialógica e discursiva dos pressupostos bakhtinianos, destacando alguns conceitos, dentre eles: enunciado, forças centrípeta e centrífuga, discurso e gênero. O livro é descrito como gênero do discurso. Além disso, também assumimos que o livro é um suporte, com o intuito de explicitar que os textos que adentram os materiais didáticos mudam de função, sendo vistos por meio de uma funcionalidade didática. Discutimos, também, as concepções de língua, linguagem, gramática, texto e ensino assumidas pelos autores dos livros didáticos. Procuramos analisar os livros através de um olhar discursivo, considerando a abordagem documental de uma pesquisa qualitativa. Nossa análise dos documentos se deu por meio de inferências que buscaram refletir sobre a maneira que o ensino de gramática é visto nos livros didáticos de português. Os resultados apresentados nos levam a acreditar que poucas foram as mudanças ocorridas no ensino de gramática após a implementação dos PCNs, prevalecendo, ainda, um estudo tradicional em detrimento de uma análise reflexiva da língua em uso.
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Books on the topic "PCNs"

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Wittke, Cleide Inês. Ensino de língua materna: PCNs, gramática e discurso. Santa Cruz do Sul: EDUNISC, 2007.

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Wittke, Cleide Inês. Ensino de língua materna: PCNs, gramática e discurso. Santa Cruz do Sul: EDUNISC, 2007.

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Jacomeli, Mara Regina M. PCNs e temas transversais: Análise histórica das políticas educacionais brasileiras. Campinas, SP: Alínea Editora, 2007.

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Jacomeli, Mara Regina M. PCNs e temas transversais: Análise histórica das políticas educacionais brasileiras. Campinas, SP: Alínea Editora, 2007.

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PCNs e temas transversais: Análise histórica das políticas educacionais brasileiras. Campinas, SP: Alínea Editora, 2007.

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Steve, Prokup, ed. Cellular and PCS/PCN telephones and systems: An overview of technologies, economics, and services. Fuquay-Varina, NC: APDG Pub., 1996.

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Kotecha, Harshad. PCs. New York: Barnes & Noble Books, 2005.

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Sharon, Perkins, ed. PCOS for dummies. Hoboken, NJ: Wiley Pub., Inc., 2011.

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Leung, Andrew Wing Lok. PCAS communication system. [s.l: The Author], 1992.

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Easy PCs. Carmel, IN: Que, 1992.

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Book chapters on the topic "PCNs"

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Lucia de Amorim Soares, Maria, and Leandro Petarnella. "The Environment as a Cross-Curricular Theme in the Brazilian “Parâmetros Curriculares Nacionais” (PCNs, National Curriculum Parameters)." In Schooling for Sustainable Development in South America, 105–21. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-1754-1_7.

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Braun-Falco, Markus, Henry J. Mankin, Sharon L. Wenger, Markus Braun-Falco, Stephan DiSean Kendall, Gerard C. Blobe, Christoph K. Weber, et al. "PCNSL." In Encyclopedia of Molecular Mechanisms of Disease, 1592. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-29676-8_6132.

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Braun-Falco, Markus, Henry J. Mankin, Sharon L. Wenger, Markus Braun-Falco, Stephan DiSean Kendall, Gerard C. Blobe, Christoph K. Weber, et al. "PCNV." In Encyclopedia of Molecular Mechanisms of Disease, 1592. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-29676-8_5110.

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Migliozzi, Matthew T., Mark G. Biebel, and Michael P. Kurtz. "PCNL." In Minimally Invasive and Robotic-Assisted Surgery in Pediatric Urology, 251–73. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-57219-8_18.

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Muro, Yoshinao, and Eng M. Tan. "PCNA." In Manual of Biological Markers of Disease, 365–76. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1670-1_23.

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Monzo, Ana M., Nikolaos Prapas, and Artemis Karkanaki. "PCOS." In Ultrasound Imaging in Reproductive Medicine, 91–109. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-16699-1_6.

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Lahme, Sven. "Minimal-Invasive PCNL (Mini-PCNL)." In Percutaneous Nephrolithotomy, 137–49. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-0575-1_16.

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Stracquadanio, Mariagrazia, and Lilliana Ciotta. "PCOS Therapy." In Metabolic Aspects of PCOS, 89–137. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-16760-2_6.

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Piechota, Hansjürgen, Michael Waldner, and Stephan Roth. "Stichkanalblutung, PCNL." In Tips und Tricks für den Urologen, 215–16. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-662-00540-8_101.

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Piechota, Hansjürgen, Michael Waldner, and Stephan Roth. "Steinextraktion, PCNL." In Tips und Tricks für den Urologen, 211–12. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-662-00540-8_99.

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Conference papers on the topic "PCNs"

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Katti, Kalpana S., Dinesh R. Katti, and Avinash H. Ambre. "Unnatural Amino Acids Modified Clays for Design of Scaffolds for Bone Tissue Engineering." In ASME 2010 First Global Congress on NanoEngineering for Medicine and Biology. ASMEDC, 2010. http://dx.doi.org/10.1115/nemb2010-13242.

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Here, we incorporate the results of our new “altered phase theory” (Sikdar et al. 2008a) into design of new polymer clay nanocomposites (PCNs) for bone biomaterials applications. Montmorillonite (MMT) clay was modified using unnatural amino acids as potentially new biocompatible modifiers. The longer carbon chain structures of the unnatural amino acids are expected to enhance non bonded interactions with clay as well as maintaining the usefulness of functional groups of natural amino acids. The specific choice of amino acids is based on both the antibacterial activity reported in literature and also our previous studies on role of chain length, functional groups etc of modifiers in influencing mechanical behavior in PCNs. Biocompatibility studies using cell culture experiments as well as mechanical behavior is evaluated for the PCNs. FTIR spectroscopy is used to compare changes to molecular structure. The increase in d001 spacing of modified clay compared to pure clay obtained from XRD experiments confirms successful intercalation of modifier. The osteoblast cells were found to grow and proliferate over the substrates. The major contribution of this work is the design of novel amino acid biopolymer-clay nanocomposites for biomaterials applications. Porous scaffold structures were also designed and fabricated.
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Aziz, H. M. "Band sharing between CDMA based non-geostationary satellite-PCNs." In Fifth International Conference on Satellite Systems for Mobile Communications and Navigation. IEE, 1996. http://dx.doi.org/10.1049/cp:19960417.

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Zhuge, Jinfeng, Yong Tang, Jihua Gou, Ruey-Hung Chen, and Christopher Ibeh. "Study of Synergistic Fire Retardancy of Nanoparticles in Polymer Matrix Composites." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-11459.

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In this study, three kinds of carbon nanofiber sheets were made through a high-pressure filtration system: pure carbon nanofiber, carbon nanofiber with polyhedral oligomeric silsequioxane (PCNS) and carbon nanofiber with Cloisite Na+ clay (CCNS). Then these sheets were incorporated onto the surface of glass fiber reinforced polyester composites through resin transfer molding process. The samples were analyzed with scanning electron microscopy (SEM), thermal gravimetric analyses (TGA). The fire retardant performance of the laminates was evaluated with cone calorimeter test at an external radiated heat flux of 50kw/m2. The results of laminates with PCNS indicated that the fire performance was impaired when comparing with the case of pure carbon nanofiber paper. However, in the case of CCNS, the primary results showed a pronounced improvement of the fire performance was observed. The possible mechanism was also discussed in the present study.
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Ho, Joseph S. M., and Ian F. Akyildiz. "Local anchor scheme for reducing location tracking costs in PCNs." In the 1st annual international conference. New York, New York, USA: ACM Press, 1995. http://dx.doi.org/10.1145/215530.215573.

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Bischl, Hermann, Markus Werner, and Erich Lutz. "On satellite diversity and mobile user environment for NGSO S-PCNs." In 16th International Communications Satellite Systems Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1996. http://dx.doi.org/10.2514/6.1996-1076.

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Aziz, H., R. Tafazolli, and B. Evans. "Gain in capacity by using satellite diversity in a CDMA based S-PCNs." In 17th AIAA International Communications Satellite Systems Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1998. http://dx.doi.org/10.2514/6.1998-1340.

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Thedim, Camila Bohrer. "UNIDADES DE CONSERVAÇÃO COMO INSTRUMENTO DE ENSINO DA GEOGRAFIA:UMA ANÁLISE NO MUNICÍPIO DE NOVA FRIBURGO-RJ." In I Congresso Nacional de Ensino e Pesquisa em Geografia On-line. Revista Multidisciplinar de Educação e Meio Ambiente, 2021. http://dx.doi.org/10.51189/rema/1319.

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Introdução: As constantes transformações no espaço na contemporaneidade, evidenciam claramente o atual estágio de relação intrínseca entre sociedade e natureza, e o seu combustível principal é alicerçado no capital. Atitudes estas, que são estopim para desencadear problemas ambientais, que constituem objeto de estudo e alvo de preocupação de cientistas que visam destrinchar estes fenômenos. Fato este, evidente também em currículos do campo educacional do ensino básico. Pensando nisto, foi incluído pelo MEC, os temas com caráter interdisciplinar, e a Geografia por sua vez em seu currículo, como tema transversal aborda a questão do meio ambiente fundamentada pelos PCNs- Parâmetros Curriculares Nacionais. Neste viés, a inserção das unidades de conservação -UCs no ensino da Geografia, são valiosos instrumentos para se trabalhar a questão ambiental. Objetivos: Este trabalho busca evidenciar a possibilidade de trabalhar o tema transversal meio ambiente proposto pelo PCNs de Geografia, através da visitação in loco de uma categoria de unidades de conservação, as Reservas Particulares do Patrimônio Natural as RPPNs. Como objetivo específico, busca-se abordar a possibilidade de desenvolver estas visitações no município de Nova Friburgo. Material: Para elaborar esta pesquisa, recorreu a oferta de referências bibliográficas anteriores cerca desta temática, posteriormente, houve o contato com o órgão ambiental, responsável por gerir as RPPNs na cidade, e por fim, foi realizado uma visitação a campo. Método: A pesquisa possui caráter qualitativo associado ao método investigativo. Conclusão: Trabalhar a questão ambiental no segmento do ensino básico é de grande valia, ofertando a possibilidade de desenvolver e despertar a consciência ambiental nos discentes, tornando-os ativos e preocupados com a questão ambiental, e a Geografia quando se dispõe trabalhar com o tema meio ambiente de modo in loco nas UC's tem maior efetividade. E por fim, no município de Nova Friburgo, tem amplo potencial de uso das RPPNs voltado ao ensino do tema transversal meio ambiente.
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SIQUEIRA, DOMINGAS CRUVINEL BATISTA DE, ILTON BELCHIOR CRUVINEL, and DANIEL STACIARINI CORREA. "A (falta de) preparação dos futuros docentes para a Educação Ambiental no bioma Cerrado." In Latin American Publicações. lapubl, 2021. http://dx.doi.org/10.47174/lace2021-0065.

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O artigo aborda como é a preparação que os futuros docentes têm para trabalhar o tema caso fosse adotado o enfoque em uma visão holística e transdisciplinar. Descreve as principais concepções acerca da educação ambiental (EA), holismo, transdisciplinaridade e as limitações em termos de conteúdo que contemplem o bioma cerrado, a falta de preparo dos professores para trabalhar a temática ambiental, obrigatória pelos Parâmetros Curriculares Nacionais (PCNs). Constata, em documentos, o pouco envolvimento das Instituições de Ensino Superior, Pontifícia Universidade Católica de Goiás (PUC Goiás) e Universidade Federal de Goiás (UFG) em trabalhar o futuro docente para atuar com EA junto às escolas de ensino fundamental e médio. Conclui que é preciso reverter este quadro para que seja possível formar novos docentes que melhor compreendam a EA e os cuidados com o bioma cerrado.
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Younis, F., O. Shibolet, A. Philips, E. Santo, and E. Scapa. "SAFETY AND EFFICACY OF ENDOSCOPIC ULTRASOUND-GUIDED RADIOFREQUENCY ABLATION (EUS-RFA) OF PANCREATIC CYSTIC NEOPLASMS (PCNS) AND PANCREATIC NEUROENDOCRINE TUMORS (PNETS): PRELIMINARY REPORT OF A PROSPECTIVE COHORT." In ESGE Days 2019. Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1681344.

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Ahmed, Tousif, Maha Bhouri, Samer Kahwaji, Dominic Groulx, and Mary Anne White. "Experimental Investigation of Thermal Management of Tablet Computers Using Phase Change Materials (PCMs)." In ASME 2016 Heat Transfer Summer Conference collocated with the ASME 2016 Fluids Engineering Division Summer Meeting and the ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/ht2016-7067.

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This paper presents a study of thermal management of tablet computers (tablet PCs) using phase change materials (PCMs) encapsulated in aluminized laminated film under continuous operation. The experimental setup consists of original tablet PC parts and a simplified dummy printed circuit board (PCB) with a thermal response similar to the original PCB. Two PCMs were used in the experiments, n-eicosane and PT-37 (a commercial PCM from PureTemp). These PCMs have similar melting temperatures (n-eicosane – 35.6 °C; PT-37 – 36.3 °C) but different latent heats of fusion (n-eicosane – 236 kJ/kg; PT-37 – 206 kJ/kg). Two encapsulations with different sizes (6″ × 2.6″, 7″ × 1.5″) but the same thickness (0.0792″ (2 mm)) were used in this study. The effects of inclination and power input level on the thermal behavior of the tablet were investigated. Experiments showed that PCM encapsulated in laminate film led to lower back cover temperature for constant heat flux applications. As much as a 20 °C temperature reduction of the back cover hotspot was achieved with encapsulated PCM. It was also observed that better thermal behavior was achieved both by the melting of PCMs and heat spreading through the laminate film. It was found that the rate of PCM melting is directly related to the power input. No significant effect on PCM melting and temperature history was observed in relation to the system inclination.
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Reports on the topic "PCNs"

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Mar, Alan. PCSS/VCSEL Update. Office of Scientific and Technical Information (OSTI), April 2018. http://dx.doi.org/10.2172/1527305.

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Rodriguez, Giselle. PCBs in Caulk and Paint. Fort Belvoir, VA: Defense Technical Information Center, June 2010. http://dx.doi.org/10.21236/ada566851.

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Elbers, I. J. W., Guillaume ten Dam, D. P. K. H. Pereboom, and W. C. M. de Nijs. Proficiency test for dioxins, dioxin-like PCBs and non-dioxin-like PCbs in feed oil. Wageningen: RIKILT Wageningen University & Research, 2018. http://dx.doi.org/10.18174/462577.

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Klasson, K. T., and D. A. Abramowicz. Bioremediation of PCBs. CRADA final report. Office of Scientific and Technical Information (OSTI), June 1996. http://dx.doi.org/10.2172/671963.

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Davisson, Vincent J., Anthony Pedley, Qingshou Chen, Matthew Bartolowits, and Raymond Fatig. Targeting PCNA Phosphorylation in Breast Cancer. Fort Belvoir, VA: Defense Technical Information Center, April 2013. http://dx.doi.org/10.21236/ada586063.

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Davisson, Vincent J., Anthony Pedley, Qingshou Chen, and Matthew Bartolowits. Targeting PCNA Phosphorylation in Breast Cancer. Fort Belvoir, VA: Defense Technical Information Center, April 2011. http://dx.doi.org/10.21236/ada554228.

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Davisson, Vincent J., Anthony Pedley, Qingshou Chen, Matthew Bartolowits, and Raymond Fatig. Targeting PCNA Phosphorylation in Breast Cancer. Fort Belvoir, VA: Defense Technical Information Center, April 2012. http://dx.doi.org/10.21236/ada586048.

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Singh, Abhishek, and Ravindra Sabnis. Does tract size matter in PCNL? BJUI Knowledge, September 2020. http://dx.doi.org/10.18591/bjuik.0719.

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Foster, I., and S. Tuecke. Parallel programming with PCN. Office of Scientific and Technical Information (OSTI), December 1991. http://dx.doi.org/10.2172/5955653.

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Foster, I., and S. Tuecke. Parallel programming with PCN. Office of Scientific and Technical Information (OSTI), January 1993. http://dx.doi.org/10.2172/6681553.

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