bluuebunny/crossref_metadata_2025 huggingface dataset:
O uso da artroscopia para diagnóstico e tratamento dos distúrbios internos da articulação temporomandibular
Authors: Cardoso de Almeida Ana Rillory , Arcadinos Leite Eugênio , Farias Hassam Sheinaz , Soares Matos Pollyana , Crus Nascimento Poliana , Carneiro de Lima Oliveira Letícia
Published: October 2021

Os desarranjos internos da articulação temporomandibular (ATM) são disfunções frequentes associadas aimportantes repercussões funcionais e dolorosas, como limitação de abertura bucal e ruídos articulares, quepodem provocar prejuízos à qualidade de vida do ser humano. Possuem etiologia multifatorial e são maisfrequentemente tratados conservadoramente através de fisioterapia, placas oclusais, psicoterapia, apoio farmacológico, apenas com o insucesso da terapia não cirúrgica é que as modalidades cirúrgicas são indicadas, em somente 2% a 5% dos casos. Dentre elas, a artroscopia se destaca como uma opção minimamente invasiva, com elevados índices de sucesso e baixas taxas de complicações, sendo um instrumento de alta sensibilidade que possibilita a visualização de diversas patologias intra-articulares, o diagnóstico e o tratamento desses distúrbios. Objetivo: revisar a literatura acerca das principais indicações da artroscopia no tratamento dos distúrbios internos da ATM, suas vantagens sobre as demais técnicas cirúrgicas e suas complicações. Considerações finais: a artroscopia é uma ferramenta eficiente e segura para o diagnóstico e o tratamento de diversos distúrbios internos da ATM em pacientes de diversas faixas etárias, destacando-se por seus altos índices de sucesso, menor tempo de internação e suas baixíssimas taxas de mortalidade.
Planejamento digital para cirurgia de aumento de coroa clínico estético - relato de caso
Authors: Carvalho Simone Angélica De Faria , Freitas Iuri Dornelas Prates , Lopes Amanda Pinheiro , De Almeida Isadora Rabello , Rocha Luiz Paulo Carvalho
Published: October 2021

A exposição excessiva de gengiva durante o sorriso é denominada como sorriso gengival. O fator etiológicodessa alteração é variado e sua identificação é fundamental para confecção de um plano de tratamentoeficaz. O planejamento clínico pode ser realizado utilizando uma abordagem dinâmica e digital do sorriso.Sendo assim, software, exames imaginológicos, modelo virtual 3D e guia cirúrgico aumentam a qualidade ea precisão do tratamento, trazendo inúmeros benefícios para o paciente. Objetivo: demonstrar a importância do fluxo digital no planejamento e na correção do sorriso gengival. Relato de caso: paciente apresentou queixas em relação ao tamanho dos dentes e ao excesso de exposição de gengiva durante o sorriso. Após exames clínico e radiográfico, foi possível realizar o diagnóstico do fator etiológico como erupção passiva alterada (EPA). O tratamento de escolha foi o recontorno gengival associado à realização de osteotomia e osteoplastia. Para uma maior precisão do tratamento, foi confeccionado um guia cirúrgico duplo. Após o procedimento, a paciente foi orientada e medicada. Considerações finais: a abordagem digital do sorriso favoreceu um tratamento cirúrgico preciso, eficaz e satisfatório para a paciente, reestabelecendo assim a harmonia dento-gengivo-facial.
Previsibilidade de reabilitações de maxilas edêntulas com a técnica all-on-four: revisão de literatura
Authors: Marquezan Patricia Kolling , Borsa Lago Felipe , Moreira Bringel da Costa Rodrigo , Hamester Patricia
Published: October 2021

Objetivo: avaliar a previsibilidade das reabilitações de maxilas edêntulas através da técnica all-on-four, mensurada pelas tensões sobre implantes em estudos laboratoriais e sobrevida de próteses, perda óssea marginal e sucesso dos implantes em estudos clínicos. Revisão de literatura: foi executada uma busca na literatura nas bases de dados Lilacs, SciELO e PubMed/Medline, utilizando termos relacionados ao tema, sem restrição temporal e adaptados para cada base. As buscas foram realizadas por um único examinador no período de setembro a novembro de 2019. Após a leitura crítica dos 21 artigos selecionados, constata-se que existem vários estudos com muitos delineamentos que avaliaram a previsibilidade mensurada de várias formas. Considerações finais: diante das evidências científicas encontradas, a reabilitação de maxilas edêntulas com a técnica all-on-four demonstra ser previsível e estável. Estudos retrospectivos, prospectivos e revisões sistemáticas relatam altos índices de sucesso, baixa perda óssea marginal, embasando o uso da técnica all-on-four na odontologia.
International Real Estate Review
Authors:   Bombay First (Bombay City Policy Research Foundation), Nallathiga Ramakrishna
Published: October 2021

TThe economic justification for regulation of land markets through land use controls and other policy instruments is a well-studied subject in developed countries. However, in the recent years, there has been an increasing realisation that the regulation of urban land use and its development has been resulting in some undesirable impacts, in particularly, on the operation of land or property markets, which result in increases in land prices and a reduction in the welfare of people. This paper presents an empirical evaluation of the density regulation impact on land prices in Mumbai city. The study finds that the impact of density regulation is highest on the already highly demanded space in the CBD; also, the impact is significant in the suburbs. The study results, however, need to be interpreted more carefully in the light of other land use and housing regulations already in operation.
International Real Estate Review
Authors:   California State University, Stohs Mark Hoven , Park Yun W. ,   California State University
Published: October 2021

California’s Proposition 13, which limits the growth of property tax to 2 percent per year, provides homeowners an incentive to remain in their housing units and thus contributes to residential stability. Yet, with fast home price appreciation, new home buyers may purchase a home and then sell it again within a short period of time. Even though they incur transaction costs, they can gain by the appreciation. Under Proposition 13, faced with a disproportionately large property tax relative to those homeowners who purchased their homes a long time ago at a much lower price, the new homebuyers have an additional incentive to trade homes fast in an up market to avoid paying a high property tax. We call this short term residential trading ‘Proposition 13 risk arbitrage’ and predict that Proposition 13 induces additional short-term residential trading, which adds to the underlying residential market speculation. Cross-sectional variations of the residential holding periods over the 1993 to 2001 period in the five counties of Southern California are generally consistent with the predictions based on Proposition 13 induced trading: Households which face a higher property tax per square foot and those that experience larger capital gains show a shorter holding period. We also explain the time variation of the aggregate residential holding period using the Proposition 13 risk arbitrage argument.
International Real Estate Review
Authors:   The KDI School, Seoul, Korea, Cho Man
Published: October 2021

This study is structured around two objectives: surveying the 180 years’ evolution of the US mortgage intermediation system (MIS); and, extracting the lessons to be learned by emerging mortgage markets. To that end, I first discuss three pillars of a well-functioning MIS as a conceptual underpinning - intermediation efficiency, affordability enhancement, and risk management. The historical survey proceeds based on four reasonably distinct time periods – (1) the era of exploration (pre-1930s or pre-Great Depression era), (2) the era of institutionalization (1930s to 1960s), (3) the era of market-making (1970s and 1980s), and (4) the era of expansion and efficiency gain (1990s to Present). Based on the survey done, the lessons for other countries are organized under five topics: developing conforming mortgage product and market; extending the service to nonconforming segments; managing default and prepayment risks; managing systemic risk; and, developing an efficient intermediation process. The concluding remarks in the final section comprise the issue of right sequencing: that is, through what steps an MIS in a given country can be evolved toward a more market-based one that can deliver a higher degree of consumer welfare.
International Real Estate Review
Authors:   Technical University of Bari, d’Amato Maurizio
Published: October 2021

This paper focuses on the problem of applying rough set theory to mass appraisal. This methodology was first introduced by a Polish mathematician, and has been applied recently as an automated valuation methodology by the author. The method allows the appraiser to estimate a property without defining econometric modeling, although it does not give any quantitative estimation of marginal prices. In a previous paper by the author, data were organized into classes prior to the valuation process, allowing for the if-then, or right “rule” for each property class to be defined. In that work, the relationship between property and class of valued was said to be dichotomic.
International Real Estate Review
Authors:   National Chi-Nan University, Wang Chien-An , Chang Chin-Oh ,   National Cheng-Chi University
Published: October 2021

Since the 1997 Asian financial crisis, the monetary authority of Taiwan decreased the interest rate nine times and had every intention to maintain a loose monetary policy. However, the lending amounts to the construction industry decreased much more sharply in spite of an increased monetary supply. Hence, the loose monetary policy has not reduced the financial constraints of the construction firms in Taiwan. In this paper, we investigate that the credit channel of monetary policy how to works at the Taiwan’s construction industry. We explain the reasons for financial constraints in the construction industry in Taiwan. Construction firms whose information is considerably opaque, are likely to be viewed as “lemons,?which accounts for the credit crunch policy of banking lending to these construction firms. Two strands of evidence support this view. First, the borrowing terms for the construction industry have been more restrictive than those for other industries firms during the same period of financial difficulty. Second, we determine that such financial constraints vary systematically within different industry groups. The results substantiate that construction firms retain more internal funds for future investment, and the sign of the liquidity coefficient is significant in their investment function. The evidence shows construction firms bear most of the reductions in bank loan supply, and that they are more bank-dependent.
International Real Estate Review
Authors:   Birmingham City University, Amidu Abdul - Rasheed Amidu , Agboola Alirat Olayinka ,   Obafemi Awolowo University
Published: October 2021

This study examines the determinants of auction premium using data from a first-price sealed bid auction of Federal Government Landed Properties in Nigeria. The results indicate that the number of bidders and location are important determinants of auction price premiums. These findings are consistent with the auction theory. The empirical estimates also suggest that property type as well as bidder characteristics may also influence auction premiums.
International Real Estate Review
Authors:   Deakin University, Ma Le , Liu Chunlu ,   Deakin University
Published: October 2021

The study described in this paper focuses on testing the short-run and long-run relationships between house price and consumer price indices in Australia¡¦s capital cities from 1998 to 2008. The autoregressive distributed lag model is adopted to obtain the estimates of the short-run relationships, while the error correction model is used to investigate the long-run relationships. The t-statistic is used to compute the significance of these relationships. The research results give no evidence that house price indices are correlated with consumer price indices in the short run. However, the long-run relationships between house and consumer price indices exist in most of the cities.
International Real Estate Review
Authors:   Cleveland State University, Simons Robert A. , Saginor Jesse ,   Texas A&M University
Published: October 2021

This research evaluates the effect of leaking underground storage tanks (LUSTs) from gas stations on nearby commercial property when the existing data is incomplete or imperfect. While methodologies such as hedonic regression may be preferred for evaluating the effects of LUSTs on property values, the rigorous data requirements of these methodologies often cannot be met. Contingent valuation analysis is one method that enables estimation of losses when the data available is incomplete. A contingent valuation analysis of real estate professionals in South Carolina and Ohio provides estimates of commercial property losses, which ranges from 0-40%, depending on environmental conditions and proximity to the source. This research has developed a methodology for estimating real estate property value losses when data requirements cannot be fulfilled based on the best available data.
International Real Estate Review
Authors:   Steinbeis University Berlin, Schindler Felix
Published: October 2021

This paper analyzes long- and short-term co-movements between 14 international real estate stock markets based on cointegration and correlation analyses. The results indicate that there exist strong long-term relationships within economic and geographical regions, but less long-run linkages between real estate markets in different continents. Thus, investors would benefit from broadening their investment horizon from their domestic continent to Australia, Europe, and North America. Furthermore, it is shown that within each region, there are one or two key markets that influence neighboring markets, such as Australia in the Asia-Pacific region, the US in the Anglo-Saxon countries, and France and the Netherlands in the European Monetary Union (EMU). Therefore, from an investor!|s point of view, it is implied that it should be sufficient to only focus on these central markets. With respect to the efficient market hypothesis, the findings by the cointegration analysis further question its validity for securitized real estate markets.
International Real Estate Review
Authors:   Kuwait University, Almudhaf Fahad , Hansz J. Andrew ,   California State University Fresno
Published: October 2021

This study investigates systematic monthly return regularities in the listed equity returns of twelve European property companies.? Significant monthly effects exist in all sampled countries with Germany as the single exception. Furthermore, the findings provide evidence of abnormally high December returns, or a December effect, in four international indices (FTSE EPRA/NAREIT international Europe, Euro-zone, Global, and North America) and five European countries (Finland, France, Netherlands, Norway, and the United Kingdom). With the exception of Switzerland, the well-documented January effect is absent from all European property company equity returns.
International Real Estate Review
Authors:   HSBC (The Hong Kong and Shanghai Banking Corporation), Chen Jie , Ni Shawn ,   University of Missouri
Published: October 2021

The price-to-rent ratio, a common yardstick for the value of housing, is difficult to estimate when rental properties are poor substitutes of owner-occupied homes. In this study, we estimate price-to-rent ratios of residential properties in two major cities in China, where urban high-rises (estates) comprise both rental and owner-occupied units. We conduct Bayesian inference on estate-specific parameters by using information of rental units to elicit priors of the unobserved rents of units sold in the same estate. We find that the price-to-rent ratios tend to be higher for low-end properties. We discuss economic explanations for the phenomenon and the policy implications.
International Real Estate Review
Authors:   School of Business and Human Resources, Circuit House Area East, Jamshedpur, Sarathy P. Sanjay
Published: October 2021

The purpose of this research paper is to examine the influence of opinion leaders in real estate markets. First, we provide a literature review of opinion leaders and real estate markets in India. Secondly, the variables that influence the opinion leaders are established and their measurement is well defined. Thirdly, a survey has been conducted by using a self- administered questionnaire, which was sent to 234 individuals who are responsible for handling real estate firms. The research model is empirically tested in a sample of 128 respondents by using a chi-square analysis. This study finds that opinion leaders in real estate markets possess significantly higher levels in exposure to media sources, social involvement, product knowledge, innovativeness, and computer usage than non-leaders. Opinion leaders also possess a higher degree of social networking and have used the internet more frequently for longer sessions than non-leaders. Finally, we identify the key implications, conclude the research finding and explore potential avenues for future research.
International Real Estate Review
Authors:   The Brattle Group, Berkman Mark P. , Hubbard Kyle J. ,   The Brattle Group, Savage Timothy H. ,   Finance Scholars Group
Published: October 2021

Recent litigation with regards to property damage associated with carbon black emissions provides an opportunity to measure the impact of particulate matter (PM), a Clean Air Act pollutant. By using property-specific PM concentrations, we estimate the impact of PM on residential property values, which accounts for relevant characteristics and multiple pollution sources. This study simultaneously incorporates all important econometric modeling features cited in the prior literature. We find that a 10-percent increase in PM concentration results in a statistically-significant 1.1-percent decrease in value. In 2007 dollars, a one-standard deviation increase in PM concentration results in a statistically-significant reduction of approximately $4,800.
International Real Estate Review
Authors:   Seikei University, Nagano Mamoru
Published: October 2021

This paper investigates the relationship between real estate asset liquidity and the liability structure of Japanese real estate investment trusts (J-REITs). It employs data on the regionality and usage of real estate assets as new proxies for the liquidation value of these assets, and arrives at the following conclusions. First, J-REITs with high ratios of real estate investment assets in highly liquid regions, that is, regions where the trade frequency per unit area is high, have high debt-to- equity ratios and debts of long-term maturity. Second, J-REITs with high concentration ratios of small real estate assets that are traded as residential properties also have high debt-to-equity ratios and debts of long-term maturity. In addition, the above relationships are enhanced when these REIT shave a concentrated ownership structure. In summary, this paper empirically validates the employment of regional characteristics and usage type of real estate assets as proxies for asset liquidation value, and confirms that these proxies are related to the capital and liability structures of J-REITs. This connection is possibly intensified by the perception of block shareholders as sponsor firms by market participants.
International Real Estate Review
Authors:   Queensland University of Technology, Rinchumphu Damrongsak , Eves Chris ,   Queensland University of Technology, Susilawati Connie ,   Queensland University of Technology
Published: October 2021

This paper aims to evaluate the brand value of property in subdivision developments in the Bangkok Metropolitan Region (BMR), Thailand. The result has been determined by the application of a hedonic price model. The development of the model is developed based on a sample of 1,755 property sales during the period of 1992-2010 in eight zones of the BMR. The results indicate that the use of a semi-logarithmic model has stronger explanatory power and is more reliable. Property price increases 12.90% from the branding. Meanwhile, the price annually increases 2.96%; lot size and dwelling area have positive impacts on the price. In contrast, duplexes and townhouses have a negative impact on the price compared to single detached houses. Moreover, the price of properties which are located outside the Bangkok inner city area is reduced by 21.26% to 43.19%. These findings also contribute towards a new understanding of the positive impact of branding on the property price in the BMR. The result is useful for setting selling prices for branded and unbranded properties, and the model could provide a reference for setting property prices in subdivision developments in the BMR.
International Real Estate Review
Authors:   Brigham Young University, Otterstrom Samuel M.
Published: October 2021

This paper models one facet of the relationship between housing market price shifts and income migration among U.S. regions: how income migration relates to regional housing price clusters. The tremendous negative slide in national housing prices from 2006 to 2012 had an uneven spatial distribution. These differences are explored within the context of net income and net population migration (movement of money with people). Median housing prices for urban areas from 2005 to 2010 and IRS county-to-county migration data are used to compare income migration among urban clusters of similar housing price trends. Selective migrations of people and income in and out of these housing clusters have either exacerbated the housing bust or softened its decline. Income effectiveness, or the gain or loss of money caused by migration, is a helpful measure that can be used to help predict future housing price movements.
PERSEPSI MASYARAKAT TERHADAP BANK SYARIAH
Authors: Sholikin Eko Roy , Muhyidin Syaiful , Pratiwi Ira Eka
Published: October 2021

Bank Syariah adalah bank yang menjalankan kegiatan usaha berdasarkan prinsip Islam yaitu prinsip keadilan dan keseimbangan, serta kemaslahatan. Ada beberapa penyebab umat Islam belum menggunakan jasa bank Syariah. Diantaranya karena adanya sikap netral atau keragu-raguan dari masyarakat terhadap pemahaman akan riba. Penelitian ini bertujuan untuk menganalisis persepsi masyarakat terhadap bank Syariah studi kasus masyarakat Distrik Abepura.

Penelitian ini menggunakan metode penelitian kualitatif deskriptif. Jenis penelitian ini adalah penelitian lapangan. Data penelitian dikumpulkan melalui wawancara kepada informan yang merupakan masyarakat Distrik Abepura Kota Jayapura. Analisis data dilakukan dengan Teknik analisis data Miles dan Hubermen. Hasil penelitian ini menunjukan bahwa masyarakat sudah mengetahui dan sudah paham Bank Syariah. Masyarakat juga sudah menabung di Bank Syariah. Meskipun demikian ada beberapa masyarakat yang tidak menabung di bank Syariah tetapi memahami tentang bank Syariah. Penelitian ini menyimpulkan bahwa persepsi Masyarakat Distrik Abepura terhadap bank Syariah adalah positif atau baik.
Percepções e expectativas sobre a maternidade de gestantes que vivem com HIV
Authors: Stabnow Santos Floriacy , Da Silva Soares Milena , Ferreira e Silva Janainna , Martins de Moura Stabnow Santos Romila , Lemos da Silva Pedro Mário , Maia Pascoal Livia , Graepp Fontoura Iolanda , Santos Neto Marcelino
Published: October 2021

Objetivou-se identificar as percepções das gestantes que vivem com o HIV sobre a maternidade e conhecer as expectativas e os sentimentos vivenciados por essas mulheres. Pesquisa descritiva, documental, qualitativa, com a participação de 17 gestantes soropositivas para o HIV, atendidas no Serviço de Atendimento Especializado em HIV/aids do Hospital Regional Materno Infantil de Imperatriz-MA realizada entre setembro de 2019 e julho de 2020. Pesquisa aprovada pelo Comitê de Ética em Pesquisa da Universidade Federal do Maranhão sob parecer 2.496.047. As falas das participantes foram gravadas e analisadas segundo a análise do conteúdo e encontrou-se quatro categorias: Sentimentos vivenciados ao diagnóstico do HIV e perspectivas para o futuro; Sentimentos relacionados a gestação no contexto do HIV; Esperanças e expectativas com o futuro do filho; Sensação de impotência diante da impossibilidade de amamentar. Para algumas a descoberta do diagnóstico de soropositividade gerou sentimentos de medo e raiva, algumas se decidiram pela gravidez e para outras a gravidez não foi planejada. Percebeu-se a importância da equipe multidisciplinar para o processo de adaptação da gestante no seu contexto, principalmente no momento de pré-natal.
Joaquim de Carvalho na cultura e na historiografia da ciência portuguesa
Authors: Navarro Bruno J.
Published: October 2021

O presente artigo debruça-se sobre a obra historiográfica de Joaquim de Carvalho, um dos maiores vultos da cultura portuguesa, no século XX, procurando individualizar e sistematizar uma apreciação aos seus trabalhos precursores na área específica da História da Ciência, que muito contribuíram para a consolidação dessa área disciplinar em Portugal. Depois de uma breve apresentação biográfica, contendo os principais momentos da sua vivência académica e política, e de uma síntese do conjunto de apreciações críticas à sua obra, estabelecem-se as premissas conceptuais e metodológicas que nortearam a sua investigação, no campo da historiografia da ciência, procurando relevar o carácter inovador das suas abordagens face ao tradicionalismo historiográfico português.
O estatuto do diagrama nos Elementos de Euclides
Authors: Grimberg Gérard Émile
Published: October 2021

Este trabalho é o início de uma pesquisa relativa ao papel do diagrama na matemática grega. Nós estudamos o estatuto do diagrama nos Elementos de Euclides tentando situá-lo no contexto cultural e filosófico recorrendo em particular aos textos de Platão e Aristóteles que ressaltaram a imporância da relação entre visão e pensamento. Em um primeiro momento, tentamos definir o caráter semiótico e linguístico que reveste o diagrama em Euclides, seguindo a abordagem de Peirce. Em um segundo momento, analisamos como os diagramas têm as suas próprias regras sintáticas ligadas às significações que incorporam, o que confere aos diagramas uma função ideogramática. Finalmente ressaltamos a importância do diagrama no desempenho do chamado caráter formular da matemática grega e no estilo mesmo das proposições.
Bautista Vidal
Authors: Rocha José Fernando Moura , Filho Aurino Ribeiro
Published: October 2021

A trajetória de vida do físico e engenheiro José Walter Bautista Vidal é sumariada a partir de documentos e depoimentos em torno de alguns temas importantes que servem como testemunho de seu pensamento multifacetado, sempre presente na sua análise de problemas importantes do Brasil. Ênfase será dada à sua luta em defesa das fontes alternativas de energia.
A “Antítese Essencial”
Authors: Uchôa Raphael , Waisse Silvia
Published: October 2021

O problema acerca do lugar do homem na natureza constituiu uma espécie de fio condutor ao redor do quais diversos conceitos foram formulados e várias teorias foram debatidas no contexto da Inglaterra vitoriana. Esse tópico foi encapsulado por Thomas Huxley no título de uma obra muito influente a partir da década 1860: Man’s Place in Nature. O objetivo do presente estudo foi analisar os aspectos contextuais e epistemológicos relacionados à referida obra. Huxley conjugou os fatos produzidos pela anatomia comparada, bem como as ideias contemporâneas sobre as raças humanas, além das ideias mais tradicionais sobre a gradação das espécies e a “escala natural”, no intuito de formular uma lei geral que assegurasse a unidade da humanidade com o resto do mundo natural.
Luigi Fantappiè e a Missão Italiana no Brasil
Authors: Silva Luciana Vieira Souza da , Siqueira Rogério Monteiro de
Published: October 2021

Na segunda metade dos anos 1930, um grupo de professores italianos, chamado Missão Italiana, ocupou uma série de cadeiras principalmente das subseções de matemática e física da recém-criada Faculdade de Filosofia, Ciências e Letras (FFCL) da Universidade de São Paulo (USP). Este grupo de professores foi fundamental na formação das primeiras gerações de físicos e matemáticos dessa faculdade. Membro dessa Missão, o matemático italiano Luigi Fantappiè foi professor da FFCL desde a sua fundação, em 1934, até seu retorno à Itália, em 1939. O documento aqui transcrito e apresentado trata-se do relatório apresentado por Fantappiè ao então diretor da FFCL, Alfredo Ellis Junior, no dia de sua partida para a Itália, em 25 de outubro de 1939. O relatório é um importante documento para a compreensão tanto da trajetória de Fantappiè dentro e fora da faculdade, como também dos alunos e novos professores da FFCL que, nas décadas seguintes, serão figuras proeminentes das ciências e do ensino superior brasileiros.
A gênese e a persistência do historiador medieval
Authors: Leite Fábio Rodrigo
Published: October 2021

Já são conhecidas as condições de emergência da história da ciência medieval na obra de Pierre Duhem: estudando as origens da estática entre 1903 e 1904, o autor redescobriu acidentalmente tratados medievais esquecidos pela tradição que antecipavam, a seu ver, a estática moderna. Ainda que a urgência de explorar seus recentes achados tenha fomentado uma sequência imediata de publicações sobre o assunto, ela é incapaz de explicar os escritos tardios. Acreditamos que essa explicação resida em um novo conjunto de descobertas imprevistas, desta feita sobre a dinâmica e a astronomia medievais, as quais viriam a ocorrer somente em meados de 1908. Nas teorias de João Buridan e Nicolau de Oresme, Duhem entreviu o nascimento da ciência moderna. Isto posto, procuraremos: (a) expor, com novas fontes, a visão positivista inicial do historiador, parcialmente abandonada com as revelações iniciais de 1904; (b) determinar as circunstâncias do segundo conjunto de descobertas atinentes à dinâmica do século XIV; (c) avaliar algumas das principais – e drásticas – consequências acarretadas por elas na obra de maturidade, e; (d) contextualizar as relações cada vez mais íntimas e explícitas entre a reabilitação da Idade Média e o projeto religioso duhemiano.
Articulo docente: Estado, soberanía y participación política en sociedad actual
Authors: García Escribano Juan José , Ivorra Alemañy Adrian , Ortíz García Pilar
Published: October 2021

Es un hecho que las democracias actuales viven una crisis de representación como consecuencia del paulatino descrédito en el que han caído la política y la actuación de algunos políticos. Este descrédito ha conducido, por una parte, a la aparición de movimientos populistas cuyo discurso trata de obtener réditos del descontento ciudadano y, por otra, a la búsqueda de formas complementarias de representación de los intereses de la ciudadanía. Al mismo tiempo, ha llevado al planteamiento de varios interrogantes que  precisan respuesta. El primero está relacionado con el papel del Estado que, si bien continúa siendo el protagonista de la escena pública y de poder, se encuentra seriamente comprometido por movimientos como la globalización y sus múltiples caras. El segundo interrogante es el papel que juega la ciudadanía en el proceso de regeneración democrática y como protagonista de una forma de democracia participativa que devuelva la política a la noble actuación de gestión de lo público. Este artículo es una reflexión sobre los interrogantes planteados.
Artículo Circulo: Desafíos contemporáneos del estado, La democracia y la ciudadanía
Authors: Benitez López Juan Carlos , Suazo Sevilla Jenny Sobeyda , Galeano Vides Orlando Javier , Euceda Amaya Leonardo
Published: October 2021

El Estado, la democracia y la ciudadanía son fundamentales para concretizar el desarrollo humano, ya que el buen o mal desempeño determinará la realización o no de la población. Por ello, en el presente artículo planteamos los distintos debates contemporáneos que están en curso, resaltando los desafíos que habrán que afrontarse a fin de alcanzar un desarrollo humano sostenible, lo cual implica no solo una reconceptualización del Estado y una profundización de la democracia, sino que también implica la ampliación de los mecanismos en los cuales la ciudadanía se involucre en los asuntos públicos, lo cual proporcionará legitimidad al Estado,viabilidad a la democracia y nuevos marcos políticos de participación y desarrollo incluyente.
Artículo Circulo: Desafíos contemporáneos del desarrollo humano y sostenibilidad: una mirada desde la biodiversidad, agricultura y soberanía alimentaria.
Authors: Suazo Juan Pablo , Moreno Marvin , Lara José Daniel , Díaz Pablo Amilcar
Published: October 2021

El enfoque de desarrollo, desde una perspectiva de acumulación, tiene raíces tempranas a la revolución industrial, pero es posterior a la Segunda Guerra Mundial que se adopta el concepto de desarrollo como sinónimo del crecimiento económico, quedando a merced de una disposición operativa mecanicista relativa al crecimiento. No obstante, el concepto ha evolucionado, de desarrollo humano y, a posteriori desde una perspectiva más integral, a desarrollo humano sostenible, con los que se han adoptado compromisos de los países para alcanzar metas de desarrollo como los Objetivos de Desarrollo del Milenio y los Objetivos de Desarrollo Sostenible 2030, impulsados a nivel global por la Organización de las Naciones Unidas.
Dentists in Covid19 Mode
Authors: Sigala Carlos Humeres
Published: October 2021

Dear, I want to share with you my opinion and reflection on what I have experienced these approximately 11 months of pandemic on this side of the world (South America). I live in a regional capital city, Antofagasta, in northern Chile, where the first cases of SarsCov-2 began to be detected in midMarch 2020. At first, many sanitary measures taken globally were also implemented in Chile and South America, where dentists suffer quite harshly and abruptly from the arrival of COVID19. In our local case, I remember that a dentist was diagnosed with COVID19 when performing the PCR for presenting symptoms, and it turns out that the day before he had treated a number of patients no less.
A Review of Linear Gel Fracturing Fluids
Authors: M Chavali
Published: October 2021

Linear gel is prepared by treating bio-diesel with various water samplescollected from different water bodies. The new biodiesel based linear gel was employed in the recovery of oil wells through hydro fracturing and pilot tests were conducted for the first time. Viscosity of gel was measured at various bottom hole-circulating temperatures and it was found to vary from 32 to zero dial reading in the range of 45°C to 60°C. Gelwasobservedto break at 45°C and 60°C in 120 minutes. So, the final temperature was selected as 60°C for the application of gel for coal bed methane (CBM) wells. It was observed that higher levels of salinity in water helped in optimum utilization of gel in real time application.
Structure Optimization Design of Pulseoscillation Amplifier for Hydraulic Oscillator Based on Numerical Simulation
Authors: Xu Yuqiang
Published: October 2021

Hydraulic oscillator is one of the effective tools to solve the problem of high friction in directional drilling and horizontal drilling. However, there are some problems with this kind of tools such as high pressure loss and insufficient vibration force. Because of its self-excited oscillation characteristics, pulse oscillation amplifier can realize the amplification of pulse jet pressure under the condition of lowpressure loss, which is one of the effective ways to solve the above problems of hydraulic oscillator. In this paper, according to the working characteristics of hydraulic oscillator and the demand of pulse amplification, the structure of pulse oscillator amplifier was optimized based on numerical simulation method. Firstly, the geometric and numerical models of the pulse oscillator amplifier were constructed, and the flow field distribution and pulse amplification effect of the pulse oscillation amplifier under different structural parameters were simulated and analyzed, and the influence of different structural parameters on the pulse amplification effect was explored. Secondly, the structure of the pulse oscillator amplifier was optimized by Response Surface Method, and the optimal structure based on the effect of outlet pressure amplification was obtained: upper nozzle diameter D1=22mm, upper nozzle length L1=26mm, lower nozzle diameter D2=28mm, lower nozzle length L2=28mm, cavity length L=58mm, cavity diameter d=80mm, angle 60°. Its pressure loss was 0.3MPa and outlet pressure peak value was 4.5MPa, which was 1.8 times of the inlet pressure peak value of 2.5MPa. Finally, the minimum relative error between the experimental results and the numerical simulation results was 4%, which has verified the credibility of the numerical simulation and structural optimization results.
Contaminación por Residuos Sólidos Urbanos: Caso Comunidad de Occochaca, Huanta, Perú, 2021
Authors: Marchan-Solier Carlos Enrique , Zorrilla-Crespo Valeria Alejandra , Cardenas-Quispe Mariano Anthony , Pacheco Alex
Published: October 2021

La contaminación por residuos sólidos urbanos es un problema que afecta a todas las ciudades sobre todo en las zonas rurales de la región de Ayacucho. Por consiguiente, se tuvo como objetivo determinar el nivel de contaminación por residuos sólidos urbanos en la comunidad de Occochaca. La investigación se desarrolló con un enfoque cuantitativo, de tipo descriptivo, diseño no experimental, nivel correlacional causal y de corte transversal. La muestra estuvo conformada por 30 pobladores de 18 a 65 años de la comunidad de Occochaca, mediante un muestreo no probabilístico intencional. Se utilizo un cuestionario como técnica de recolección de datos. Los resultados indicaron que existe una mala gestión de residuos sólidos urbanos en la actividad turística en Occochaca que afecto directamente a la siembra de palta, además el 34% de pobladores tuvo hepatitis B y el 30% sufrió de anemia. Se concluye que los residuos sólidos urbanos como latas, pilas y equipos electrónicos son los principales contaminantes de la zona.
Optimal parameters for the enhancement of human osteoblast-like cell proliferation in vitro via shear stress induced by high-frequency mechanical vibration
Authors:   Ruth and Bruce Rappaport Faculty OF Medicine, Technion-Israel Institute of Technology, Haifa, Israel, Rosenberg Nahum , Rosenberg Orit ,   Sheltagen Medical Ltd. Haifa, Israel, Halevi Politch Jacob ,   Department Faculty of Aerospace Engineering, Technion-Israel Institute of Technology, Haifa, Israel, Abramovich Haim ,   Department Faculty of Aerospace Engineering, Technion-Israel Institute of Technology, Haifa, Israel
Published: October 2021

Introduction: Biomechanical stimulation of cultured human osteoblast-like cells, which is based on controlled mechanical vibration, has been previously indicated, but the exact mechanical parameters that are effective for cells' proliferation enhancement are still elusive due to the lack of direct data recordings from the stimulated cells in culture. Therefore, we developed a low friction tunable system that enables recording of a narrow range of mechanical parameters, above the infrasonic spectrum, that applied uniformly to human osteoblast-like cells in monolayer culture, aiming to identify a range of mechanical parameters that are effective to enhance osteoblast proliferation in vitro. Methods: Human osteoblast-like cells in explant monolayer culture samples were exposed to mechanical vibration in the 10-70Hz range of frequencies for two minutes, in four 24 hours intervals. Cell numbers in culture, cellular alkaline phosphatase activity (a marker of cell maturation), and lactate dehydrogenase activity in culture media (representing cell death) were measured after the mechanical stimulation protocol application and compared statistically to the control cell cultures kept in static conditions. The cell proliferation was deduced from cell number in culture and cell death measurements. Results: We found that 50-70 Hz of vibration frequency protocol (10-30 μm of maximal displacement amplitude, 0.03g of peak-to-peak acceleration) is optimal for enhancing cells' proliferation(p<0.05), with a parallel decrease of their maturation (p<0.01). Discussion: We detected the optimal mechanical parameters of excitation protocol for induction of osteoblast proliferation in vitro by a mechanical platform, which can be used as a standardized method in the research of mechanotransduction in human osteoblast.
La adictividad como factor de riesgo del déficit de memoria
verbal en la esquizofrenia: estudio de casos y controles
Authors: López-Lorenzo Sonia , Jimeno Bulnes Natalia , Vargas-Aragón Martín L.
Published: October 2021

El déficit cognitivo es uno de los principales predictores pronósticos de la esquizofrenia,
especialmente el déficit de la memoria verbal. La relación de causalidad entre el uso de sustancias,
los trastornos por uso de sustancias y el síndrome psicótico es probablemente multidireccional y
aún está sujeto a diversos posibles factores de confusión. La Escala de Evaluación de la Adictividad
en el Síndrome Psicótico (EASP) evalúa de manera global la dimensión de adictividad atendiendo a
todos estos factores: inicio, frecuencia, duración e intensidad. El objetivo del estudio es conocer si
la dimensión de adictividad se asocia al déficit de memoria verbal. Para ello se compara un grupo
de sujetos psicóticos que presentaban déficit de memoria (n= 47) y un grupo control de sujetos
psicóticos sin déficit de memoria (n= 58) y se comprueba una mayor adictividad en el primer
grupo. Según nuestros resultados, una puntuación en EASP > 55 es indicador de posible déficit de
memoria. Esta medición puede aportar información relevante sobre el estado actual, evolución y
pronóstico de los pacientes con comorbilidad de psicosis y adicción.
First Molecular Characterization of Colletotrichum sp. and Fusarium sp. Isolated from Mangrove in Mexico and the Antagonist Effect of Trichoderma harzianum as an Effective Biocontrol Agent
Authors: Grano-Maldonado Mayra I. , Ramos-Payan Rosalio , Rivera-Chaparro Fernando , Aguilar-Medina Maribel , Romero-Quintana José Geovanni , Rodríguez-Santiago Amparo , Nieves-Soto Mario
Published: October 2021

The aim of this study was to characterize potential fungal species affecting mangrove species in Mexico. The phytopathogens were identified based on morphological and molecular characteristics using internal transcribed spacer (ITS1/ITS4) primers then sequenced and compared with the other related sequences in GenBank (NCBI). Three fungal species were identified as Colletotrichum queenslandicum (Weir and Johnst, 2012) from black mangrove (Avicennia germinans); Colletotrichum ti (Weir and Johnst, 2012) from white mangrove (Laguncularia racemosa) and buttonwood mangrove (Conocarpus erectus); Fusarium equiseti (Corda) from red mangrove (Rhizophora mangle). In addition, C. ti and F. equiseti were identified from mango Mangifera indica L. sampled close by the mangrove area. This study provides first evidence of anthracnose on four mangrove species caused by Colletotrichum and Fusarium species in the “Términos” coastal lagoon in Campeche State southern Mexico. This is the first time that C. queenslandicum and C. ti are reported in Mexico. F. equiseti has not been reported affecting M. indica and R. mangle until the present work. Little is known regarding fungal diseases affecting mangroves in Mexico. These ecosystems are protected by Mexican laws and may be threatened by these pathogenic fungus. This is the first report of the effect of Trichoderma harzianum TRICHO-SIN as an effective biological control against of Colletotrichum and Fusarium species.
The Plant-Stress Metabolites, Hexanoic Aacid and Melatonin, Are Potential “Vaccines” for Plant Health Promotion
Authors: Anderson Anne J. , Kim Young Cheol
Published: October 2021

A plethora of compounds stimulate protective mechanisms in plants against microbial pathogens and abiotic stresses. Some defense activators are synthetic compounds and trigger responses only in certain protective pathways, such as activation of defenses under regulation by the plant regulator, salicylic acid (SA). This review discusses the potential of naturally occurring plant metabolites as primers for defense responses in the plant. The production of the metabolites, hexanoic acid and melatonin, in plants means they are consumed when plants are eaten as foods. Both metabolites prime stronger and more rapid activation of plant defense upon subsequent stress. Because these metabolites trigger protective measures in the plant they can be considered as “vaccines” to promote plant vigor. Hexanoic acid and melatonin instigate systemic changes in plant metabolism associated with both of the major defense pathways, those regulated by SA- and jasmonic acid (JA). These two pathways are well studied because of their induction by different microbial triggers: necrosis-causing microbial pathogens induce the SA pathway whereas colonization by beneficial microbes stimulates the JA pathway. The plant’s responses to the two metabolites, however, are not identical with a major difference being a characterized growth response with melatonin but not hexanoic acid. As primers for plant defense, hexanoic acid and melatonin have the potential to be successfully integrated into vaccination-like strategies to protect plants against diseases and abiotic stresses that do not involve man-made chemicals.
The Trials & Tribulations of Wood & Caldwell’s Engines at Bycars Colliery, Burslem
Authors: Kitching David
Published: October 2021

The shortage of coal to feed the pottery industry in Burslem led pottery owners Wood & Caldwell to purchase the nearby Bycars colliery to secure supplies. The problems faced with water flooding the workings and the actions of rogue neighbours forced the installation of ever larger pumping engines and prompted technical innovation to increase the power of these engines. This paper outlines the problems faced with water and the attempts to drain the mines by increasingly powerful engines. The unscrupulous actions of the Gallimore family, tenants of the adjacent colliery, and the effect on the pumping arrangements over many years are detailed.