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Este volume surge como consequência direta do Simpósio internacional PAPER TRAILS: post-industrial histories, technical memories and art practices in Tomar que teve lugar em Tomar (Portugal) entre 25 e 27 de maio de 2022. Por sua vez, o simpósio insere-se num projeto homónimo concebido, em parceria com colaboradoras da École de Design et Haute École d’Art du Valais (EDHEA), no Centro de Tecnologia, Restauro e Valorização das Artes (TECHN&ART), uma unidade de Investigação e Desenvolvimento financiada pela Fundação para a Ciência e a Tecnologia (FCT) com a referência UID/05488/2020 e pertencente ao Instituto Politécnico de Tomar (IPT).

In recent years, technological development in analytical instrumentation has progressed vigorously, which has allowed the evolution of analytical techniques that play an indispensable role within society, highlighting mass spectrometry. Parallel to the technological advance of this technique, the development of new ionization methods that are simpler, faster, and allow direct analysis without the need for prior treatment or sample processing is underway. The methods of ambient ionization derived from paper spray have been developing rapidly in current days, mainly in the forensic field, due to the chemical modifications made in the paper substrate and the introduction of new types of organic materials that function as a probe/substrate to collect, store, and ionize the sample, then enabling more efficient and selective analyzes. This review highlights direct analyzes by applying paper spray ionization in the forensic field and some variations of this technique, including Thread Spray Ionization (TSI) when a fabric thread is used; Touch Spray Ionization (TSI), which uses materials such as metallic needles, medical swabs, and wooden sticks; Fiber Spray Ionization (FSI), which applies polymeric fibers as substrates.

This study analyzes the process of productive specialization of the work in Maranhão, through the advance triggered by the implementation of the manufacturing unit of Suzano Paper and Cellulose in the municipality of Empress, southwest of the state. Methodologically, in addition to reviewing the relevant literature, secondary data on transformations in local employment and local professional qualifications derived from the implementation of Suzano were used together with field research. The data used originate from RAIS; CAGED; IBGE, in addition to technical schools and local universities. The results found made it possible to verify that there is a specialization of the workforce in progress to meet the logic and full functioning of the pulp production chain in Imperatriz - MA. [ABSTRACT FROM AUTHOR]

Este artigo tem por objetivo identificar os fatores que têm afetado as receitas das exportações de celulose e papel e papelão, no período de 2001 a 2020. Especificamente pretende-se quantificar as variações nas receitas provenientes da taxa de câmbio, do preço internacional e da quantidade exportada de celulose e de papel e papelão e identificar os principais eventos associados essas variações. Para tanto, utilizou-se o método diferencial-estrutural, conhecido como shift-share, que decompõe as variações da receita de exportação em efeitos parciais proporcionado por outras variáveis relacionadas. Os resultados mostram que mesmo quando os efeitos do preço internacional e a taxa de câmbio são desfavoráveis a quantidade exportada de celulose e de papel e papelão tem sido crescente, e proporcionando efeito total positivo nas receitas das exportações. Somente em quatro grandes momentos houve queda nas receitas das exportações destes produtos, momentos estes que coincidem com a ocorrência das seguintes crises: atentado a torres gêmeas (2002), crise do subprime (2008), crise política interna (2016) e pandemia (Covid-2019). ABSTRACT: This paper aims to identify the factors that have affected revenues from pulp and paper and paperboard exports, in the period from 2001 to 2020. Specifically, it intends to quantify the variations in revenues arising from the exchange rate, the international price and the exported quantity of Wood pulp and paperbord and identify the main events associate these variations. For this purpose, the differential-structural method, known as shift-share, was used, which breaks down changes in export revenue into partial effects provided by other related variables. The results show that even when the effects of the international price and the exchange rate are unfavorable, the exported quantity of woodpulp and paperboard has been increasing, providing a positive overall effect on export revenues. Only in four major moments were there decreases in revenues from exports of these products, moments that coincide with the occurrence of the following crises: attack on the twin towers (2002), subprime crisis (2008), internal political crisis (2016) and pandemic (Covid- 2019).

Esse texto discute a formação do espaço econômico paranaense e sua relação com as atividades de base econômica ou exportação. A análise segue uma visão institucionalista a partir da teorização de Douglass North. A análise também se embasa em Pedro Calil Padis, por fazer um retrospecto eficaz dos primórdios do Paraná até o final dos anos 1960. Se parte do princípio de que várias economias regionais que surgiram no Brasil estavam em condições periféricas. O termo “periférico” é devido ao fato de a economia de cada uma dessas regiões ou Estados estar subordinada ao centro dinâmico do país devido a vários fatores, dentre eles a transferência de capital, fazendo com que o Paraná, com sua economia cafeeira, subsidiasse a indústria paulista. Abstract: This paper discusses the formation of the economic space of Paraná State and its relationship with economic-based activities or exports. The analysis follows an institutionalist vision based on Douglass North's theorization. The analysis is also based on Pedro Calil Padis, for making an effective retrospective of the beginnings of Paraná State until the end of the 1960s. It is based on the principle that several regional economies that emerged in Brazil were in peripheral conditions. The term “peripheral” is since the economy of each of these regions or states is subordinated to the dynamic center of the country due to several factors, including the transfer of capital, causing Paraná, with its coffee economy, to subsidize the São Paulo industry.

Copyright of Tempo (1413-7704) is the property of Universidade Federal Fluminense, Departamento de Historia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In the criminal sphere, it is extremely important to identify perpetrators of crimes based on latent fingerprints (invisible to the naked eye) revealed at crime scenes and their corresponding objects. The present work aimed to evaluate four synthetic analogues of curcumin as possible IDL developers, and to compare their results with those of carbon black developer, as well as to reach the most adequate parameters in the use of the LTQ and FT-ICR mass spectrometers with the paper spray ionization (PS) source to study the chemical composition of the endogenous substances contained in the IDL. For this, a 24-1 factorial design was developed, where it was verified that the distance and voltage factors were the most influential for the increase in the response of signals, in the analysis of latent fingerprints by PS. Among the detected substances we can mention around 20 fatty acids, and squalene. Finally, four potential developers, synthetic analogues of curcumin, were compared with carbon black developer. The revelation of latent fingerprints occurred efficiently, allowing the visualization of minutiae, such as bifurcation and end of line, making it possible to classify them, according to the Vucetich Fingerprint Classification System.

As práticas pedagógicas centradas em videojogos têm vindo a tornar-se cada vez mais populares, dado oferecerem vantagens empiricamente validadas no que diz respeito ao envolvimento dos alunos, à sua motivação e sentido de agência. Estes construtos afetivos são agora reconhecidos como componentes-chave de uma aprendizagem eficaz e significativa, favorecendo o desenvolvimento de competências cognitivas de nível superior. Contudo, enquanto se atesta um número elevado de estudos sobre o uso de videojogos educativos nas áreas das Ciências, Tecnologia, Engenharia e Matemática (STEM), é necessário ainda explorar as potencialidades desses recursos nas disciplinas de Humanidades. Analogamente, devem ser empreendidos mais esforços no sentido da investigação e implementação de atividades que atribuam aos alunos, especialmente àqueles de níveis inferiores ao do Ensino Superior, o papel de designers de videojogos, aliado ao de jogadores. Desta feita, criam-se as condições para que os alunos construam material didático autêntico, sob a forma de experiências digitais imersivas, que apresentam tanto um valor educacional como de entretenimento. Assim, este artigo funciona como um Position Paper sobre a Aprendizagem Baseada em Jogos Digitais ou Digital Game-based learning (DGBL), descrevendo as vantagens afetivas de se jogar e criar videojogos educativos na sala de aula de Humanidades, enquanto reflete criticamente sobre possíveis obstáculos ao sucesso desta prática. O nosso objetivo é estudar como a tecnologia educativa e imersiva pode satisfazer as necessidades de aprendizagem da Geração Z, tendo em consideração os diferentes fatores contextuais que definem o seu perfil.

Copyright of História Unisinos is the property of Universidade do Vale do Rio dos Sinos and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Abstract Objective The purpose of the present study is to standardize and evaluate the use of the immunoglobulin G (IgG) antibody avidity test on blood samples from newborns collected on filter paper to perform the heel test aiming at its implementation in ongoing programs. Methods Blood samples from newborns were collected on filter paper simultaneously with the heel prick test. All samples were subjected to immunoglobulin M IgM and IgG enzyme-linked immunosorbent assays (ELISA). Peripheral blood was collected again in the traditional way and on filter paper from newborns with high IgG levels (33). Three types of techniques were performed, the standard for measuring IgG in serum, adapted for filter paper and the technique of IgG avidity in serum and on filter paper. The results of the avidity test were classified according to the Rahbari protocol. Results Among the 177 samples, 17 were collected in duplicate from the same child, 1 of peripheral blood and 1 on filter paper. In this analysis, 1 (5.88%) of the 17 samples collected in duplicate also exhibited low IgG avidity, suggesting congenital infection. In addition, the results obtained from serum and filter paper were in agreement, that is, 16 (94.12%) samples presented high avidity, with 100% agreement between the results obtained from serum and from filter paper. Conclusion The results of the present study indicate that the avidity test may be another valuable method for the diagnosis of congenital toxoplasmosis in newborns.

In this paper, we estimated the methane emissions by the disposal of sanitary and domestic-use paper consumed throughout Brazil from 1901 to 2016. The apparent consumption of this type of paper from 1961 to 2016, calculated from the data of the FAOSTAT system, was used to estimate the amount of waste disposed of annually in three site categories: sanitary landfill, controlled dump, and open-air, uncontrolled dump. The 2006 IPCC Guide methodology was used to calculate CH4emissions and long-term carbon storage. Nine scenarios based upon the law that establishes the National Solid Waste Policy (NSWP) were examined, considering 100% waste disposal and treatment in landfills or incineration from 2014. The total emission was estimated at 1.967 MtCH4, corresponding to 55.080 MtCO2eq by GWP-AR5, and the stored carbon at 3.724 Mt, corresponding to 13.655 MtCO2eq. CH4emission increased beyond the population growth rate due to an increase in the per capita paper consumption in the country, from 0.02 kgCH4.year-1 in 1961 to 0.30 kg CH4.year-1 in 2016. The NSWP has not yet been accomplished, and the scenarios outlined indicate that, from the point of view of CH4 emissions, it would be more advantageous to carry out incineration instead of applying other waste treatment technologies.

ABSTRACT Acute cholecystitis (AC) is an acute inflammatory process of the gallbladder that may be associated with potentially severe complications, such as empyema, gangrene, perforation of the gallbladder, and sepsis. The gold standard treatment for AC is laparoscopic cholecystectomy. However, for a small group of AC patients, the risk of laparoscopic cholecystectomy can be very high, mainly in the elderly with associated severe diseases. In these critically ill patients, percutaneous cholecystostomy or endoscopic ultrasound gallbladder drainage may be a temporary therapeutic option, a bridge to cholecystectomy. The objective of this Brazilian College of Digestive Surgery Position Paper is to present new advances in AC treatment in high-risk surgical patients to help surgeons, endoscopists, and physicians select the best treatment for their patients. The effectiveness, safety, advantages, disadvantages, and outcomes of each procedure are discussed. The main conclusions are: a) AC patients with elevated surgical risk must be preferably treated in tertiary hospitals where surgical, radiological, and endoscopic expertise and resources are available; b) The optimal treatment modality for high-surgical-risk patients should be individualized based on clinical conditions and available expertise; c) Laparoscopic cholecystectomy remains an excellent option of treatment, mainly in hospitals in which percutaneous or endoscopic gallbladder drainage is not available; d) Percutaneous cholecystostomy and endoscopic gallbladder drainage should be performed only in well-equipped hospitals with experienced interventional radiologist and/or endoscopist; e) Cholecystostomy catheter should be removed after resolution of AC. However, in patients who have no clinical condition to undergo cholecystectomy, the catheter may be maintained for a prolonged period or even definitively; f) If the cholecystostomy catheter is maintained for a long period of time several complications may occur, such as bleeding, bile leakage, obstruction, pain at the insertion site, accidental removal of the catheter, and recurrent AC; g) The ideal waiting time between cholecystostomy and cholecystectomy has not yet been established and ranges from immediately after clinical improvement to months. h) Long waiting periods between cholecystostomy and cholecystectomy may be associated with new episodes of acute cholecystitis, multiple hospital readmissions, and increased costs. Finally, when selecting the best treatment option other aspects should also be considered, such as costs, procedures available at the medical center, and the patient’s desire. The patient and his family should be fully informed about all treatment options, so they can help making the final decision.

Objective: To identify the 100 most-cited articles in DH and analyze their characteristics. Material and Methods: A search was performed on the Web of Science (WoS) and the 100 most-cited articles were selected. The following data were extracted: citations, year of publication, authorship, institution, country, journal, language, study design, topic of interest, conflict of interest (COI), and sponsorship. The VOSviewer software was used to visualize bibliometric networks. Poisson regression analysis was performed to measure associations between several citations and the characteristics of the studies. Results: The number of citations ranged from 346 to 48. The most-cited article was published in 1997 by Holland in the Journal of Clinical Periodontology. This journal published the most papers, followed by the Journal of Oral Rehabilitation and Journal of Dentistry. Laboratory research, review, and clinical trial were the study designs most prevalent. Reviews (p

Having the South American Amazon as our spatial cut, this paper aims to discuss it as a space of physical, environmental and socioeconomic relevance to regional rearticulation, highlighting the issue of transport infrastructure and the importance of Brazil to boost this process in contemporary times. With the end of the Union of South American Nations (Unasur) in 2019, several of its councils were paralyzed and discontinued, such as the Infrastructure and Planning Council (Cosiplan), reflecting the abandonment of efforts built since the beginning of the 21st century. In addition, relations between national preferences and the indispensable search for development, and mechanisms of cooperation and regional integration, which are fundamental instruments to meet such demands, were stressed. In turn, a scenario of discredited institutions made room for greater action by multiple public and private, internal and increasingly international and multinational actors who, in a way disconnected from regional arrangements, directed infrastructure investments focusing on their own interests, resulting in expiation of the the socio-environmental vulnerability in the Amazonian territories. We argue that it is necessary to integrate to preserve and develop. Regional governance and institutionality are central pillars for the resumption of a more resilient South American integration process, aimed at protecting and developing the Amazon, in which Brazil has an important driving role to be exercised and a directive leadership to retrieve.

Este artigo visa apresentar como os veículos de mídia brasileiros apareceram na cobertura dos principais jornais e agências de notícias internacionais que trabalharam no país durante os anos do Regime Militar (1964-1985). Com este trabalho historiográfico, a pesquisa apresentada permite que se ampliem estudos sobre: as distinções entre os métodos de censura aplicados a veículos nacionais e internacionais; o decorrer das mudanças nas políticas externas brasileiras e estadunidenses ao longo dos 21 anos de ditadura, refletidas no jornalismo transnacional; a evolução midiática nacional e sua influência política, considerando as alterações no modelo jornalístico, outorgadas pela realidade da Guerra Fria. Este artigo ambiciona uma proposta interdisciplinar e transnacional para o objeto oferecido.

ABSTRACT BACKGROUND: Surgical antibiotic prophylaxis is an essential component of perioperative care. The use of prophylactic regimens of antibiotics is a well-established practice that is encouraged to be implemented in preoperative/perioperative protocols in order to prevent surgical site infections. AIMS: The aim of this study was to emphasize the crucial aspects of antibiotic prophylaxis in abdominal surgery. RESULTS: Antibiotic prophylaxis is defined as the administration of antibiotics before contamination occurs, given with the intention of preventing infection by achieving tissue levels of antibiotics above the minimum inhibitory concentration at the time of surgical incision. It is indicated for clean operations with prosthetic materials or in cases where severe consequences may arise in the event of an infection. It is also suitable for all clean-contaminated and contaminated operations. The spectrum of action is determined by the pathogens present at the surgical site. Ideally, a single intravenous bolus dose should be administered within 60 min before the surgical incision. An additional dose should be given in case of hemorrhage or prolonged surgery, according to the half-life of the drug. Factors such as the patient’s weight, history of allergies, and the likelihood of colonization by resistant bacteria should be considered. Compliance with institutional protocols enhances the effectiveness of antibiotic use. CONCLUSION: Surgical antibiotic prophylaxis is associated with reduced rates of surgical site infection, hospital stay, and morbimortality.

Copyright of Educação is the property of EDIPUCRS - Editora Universitaria da PUCRS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Abstract: Authors from different countries have published their papers in English, aiming to promote their research results widely and to become internationally known by their peers. It is also true that, although they are aware of the English terminology used in their respective field, some authors still struggle with some features of academic writing such as collocations. Thus, this paper presents a discussion on the underuse and overuse traces of academic collocations by Brazilian authors who had their articles published in English on an open electronic library of scientific journals. In order to analyse the collocations used by these researchers, we compiled a 906,035-word corpus from eight different academic areas. The collocations observed were statistically compared to those from an academic corpus of English writings which contains texts produced by English-speaking authors. Results showed that there are more collocations underused than overused by the authors. The analysis proved that the collocation repertoire of researchers could be broadened by being pointed out during academic writing workshops. Keywords: academic collocations; research paper writing; corpus linguistics. Resumo: Autores de vários países têm publicado seus artigos científicos em inglês com o intuito de promover amplamente os resultados de suas pesquisas dentre a comunidade científica internacional. É verdade que, embora estejam cientes da terminologia utilizada no respectivo campo de pesquisa, alguns autores ainda apresentam dificuldade em lidar com certas características da escrita acadêmica, como o uso das colocações. Este artigo apresenta uma discussão sobre traços de sobreuso e subuso de colocações acadêmicas utilizadas por autores brasileiros que têm seus artigos publicados em inglês numa plataforma eletrônica aberta de artigos científicos. Para analisar as colocações utilizadas por estes pesquisadores, compilamos um corpus de 906.000 palavras a partir de oito áreas científicas. As colocações analisadas foram comparadas estatisticamente com as colocações de um corpus acadêmico de inglês que contém textos escritos por autores anglófonos. Os resultados mostraram que há mais traços de subuso que sobreuso de colocações acadêmicas utilizadas pelos pesquisadores e este repertório poderia ser ampliado se fossem destacadas durante cursos de escrita acadêmica em língua inglesa. Palavras-chave: colocações acadêmicas; escrita de artigos científicos; linguística de corpus.

Copyright of Comunicação & Sociedade is the property of Revista Comunicacao & Sociedade and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

As it is environmentally sensitive, the pulp and paper sector carry out social and environmental actions to mitigate the negative effects of production. Socioenvironmental evidence is the strategy that companies use to demonstrate social and environmental actions; therefore, this study aims to analyze the evolution of socioenvironmental evidence of Brazilian pulp and paper companies. To this end, the content of the sector’s sustainability reports, published in the Global Reporting Initiative database, was analyzed. Data were processed through descriptive statistics and multiple factor analysis. The results show that the pattern of evidence is similar among companies. The environmental category was the most evident; however, there was a decline in disclosure levels from 2013, especially for the product responsibility category.

Air pollution is one of the main environmental risk factors for health and is linked to cardiovascular diseases, which are the leading cause of mortality worldwide.In this position paper, we discuss the main air pollutants and how they can promote the development of cardiovascular disease or cardiovascular events. We also summarise the main evidence supporting the association between air pollution and cardiovascular events, such as coronary events (acute coronary syndromes/myocardial infarction; chronic coronary syndromes), stroke, heart failure and mortality. Some recommendations are made based on these data and the European Society of Cardiology guidelines on cardiovascular disease prevention, acknowledging that it is important to increase awareness and literacy on this topic in Portugal. Resumo: A poluição do ar é um dos principais fatores de risco ambiental para a saúde e está associada à principal causa de morte em todo o mundo que são as doenças cardiovasculares. Neste position paper discutimos a forma como os principais poluentes atmosféricos podem promover o desenvolvimento de doenças ou eventos cardiovasculares. Também agregámos a melhor evidência que suporta a associação entre poluição do ar e eventos cardiovasculares, como eventos coronários (síndromes coronárias agudas/enfarte do miocárdio; síndromes coronárias crónicas), acidente vascular cerebral, insuficiência cardíaca e o risco de morte. Foram feitas recomendações de acordo com a evidência, os dados nacionais e as orientações da Sociedade Europeia de Cardiologia sobre prevenção de doenças cardiovasculares, reconhecendo que é importante aumentar a sensibilização e literacia sobre este tema em Portugal.

Objetive. To know some characteristics of the communication channels used by the Brazilian Archival community. Method. It’s a bibliometric study about the prestige of scientific journals in articles of Brazilians archival science journals in order. The study use analysis of citations, with a random sample of complete 116 references of journal articles, and select reference data from the ABCDM database, from the Universidade de Brasília, which were exported into MS-Excel and SPSS. Results. The results present rankings of document types, journal titles and their countries, as well as the most frequent languages of these references. 78 channel types were identified, specially books (32.42%) and journal articles (22.46%). Among the 180 identified journal titles (89 Brazilian and 91 from other countries), the Brazilian most cited were Estudos Históricos (7.66%), Ciência da Informação (7.48%), Arquivo & Administração (5.47%), DataGramaZero (3.65%), Acervo (3.47%) and Arquivística.net (3.47%). Among foreigners, the most cited journals were Archivaria (6.02%), Archival Science (4.20%), American Archivist (3.47%) and Journal of the American Society for Information Science and Technology (2.19%). The countries with the most cited journals were Brazil (61.86%), United States (12.04%) and Canada (11.31%). The most mentioned language in the references were Portuguese (63.32%) and English (30.11%). Conclusions. The search to results point to a significant lack of specific current Brazilian journals and show that results resemble those of other research areas related to information areas in general, showing that Archival Science keep scientific communication features common to other areas of information in Brazil.

Global warming is a result of the increased emission of greenhouse gases. The consequences of this climate change threaten society, biodiversity, food and resource availability. The consequences include an increased risk of cardiovascular (CV) disease and cardiovascular mortality. In this position paper, we summarize the data from the main studies that assess the risks of a temperature increase or heat waves in CV events (CV mortality, myocardial infarction, heart failure, stroke, and CV hospitalizations), as well as the data concerning air pollution as an enhancer of temperature-related CV risks. The data currently support global warming/heat waves (extreme temperatures) as cardiovascular threats. Achieving neutrality in emissions to prevent global warming is essential and it is likely to have an effect in the global health, including the cardiovascular health. Simultaneously, urgent steps are required to adapt the society and individuals to this new climatic context that is potentially harmful for cardiovascular health. Multidisciplinary teams should plan and intervene healthcare related to temperature changes and heat waves and advocate for a change in environmental health policy., (Copyright © 2023 Sociedade Portuguesa de Cardiologia. Publicado por Elsevier España, S.L.U. All rights reserved.)

ABSTRACT: The growing worldwide demand in the pulp market has fostered research that evaluates alternative fiber sources with specific characteristics that attend the needs of the consumer market, with a view to add value to the final product and reduce production costs. Acacia mearnsii De Wild wood is a by-product of the extraction of tannin from the trunk bark, used for firewood, charcoal and pellets. However, its wood is still poorly studied, especially its anatomical characteristics, which can provide important information about its industrial potential. This study evaluated the anatomical characteristics of Acacia mearnsii wood for the production of pulp and paper. Ten trees at approximately seven years old were cut down, five from the seed production area (SPA) and five from the clonal population area (CPA). From each tree, one trunk disc was sectioned at the diameter at breast height (DBH), resulting in 10 (ten) wood samples. From each disc, a sapwood specimen was made oriented in the tangential longitudinal, radial longitudinal and transversal planes, for later obtaining the anatomical cuts and the macerates. The anatomical description of the wood followed the recommendations of the International Association of Wood Anatomists-IAWA. From the dimensions of the fibers, their quality evaluation ratios for the production of pulp and paper were calculated. Results obtained from the anatomical characterization allowed to conclude that the Acacia mearnsii woods from SPA and CPA are indicated as a source of raw material for the pulp and paper production.

This paper aimed to determine the quality indexes for paper and cellulose based on the fiber features from two wood species of interest, Eucalyptus pellita and E. tereticornis. The mean annual increment (IMA) was calculated by measuring DBH and Height (25 years), a 10 cm disk from each tree was collected for density determinations and anatomical studies for cellulose and paper. Tree height, trunk diameter at 1.30 m in height (DBH), and volume per tree were higher in E. pellita when compared to E. tereticornis. The volume per hectare and average annual increment were higher in E. tereticornis compared to E. pellita. Based on the quality indexes calculated from fiber dimensions, we did not observe any variation in flexibility coefficient between the two species; however, this index was more heterogeneous with the lowest value in E. tereticornis pith. Eucalyptus pellita showed a lower wall fraction value, including a lower overall value in pith. The Runkel index was lowest in E. pellita; in addition, the highest value, above 1, was found in pith position in E. tereticornis. The slenderness index did not differ between species and it was not possible to detect which had performed better. The results indicate that E. pellita and E. tereticornis have potential for the production of paper with high mechanical resistance, such as writing, printing and packaging. The wood of both species has potential for use in producing paper and cellulose.

The article seeks to identify if cryptocurrency white papers bring purely technical positions. The research is justified on the growing discussion regarding the regulation of cryptocurrencies. Aside this discussion, there is a scenario in which cryptocurrencies seem to have emerged precisely from an attempt to move away from authoritative public control. At first, we analyzed the conceptualization of white papers, and their purposes. Subsequently, we evaluated the content of the cryptocurrency white papers with the highest market cap at the time of the esearch. We identified the presence of political-ideological content coupled with the technical content in these documents. Finally, the presented result shows that political-ideological elements in white papers can serve the regulating agent in their decision-making process, either to decide whether or not to regulate, but also to define the limits of their performance.