cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.8092613.v1
title: THE MULTIROLE OF MODIFIED NATURAL GUMS FOR MULTICOMPONENT POLYMERS: AS COUPLING AGENTS FOR POLYMERS REINFORCED WITH CELLULOSIC FIBERS OR COMPATIBILIZERS FOR BIODEGRADABLE POLYMER BLENDS

description: In this work, the capability to use pine rosin as a biodegradable coupling agent/compatibilizer is studied. To formulate composites, post-consumer polypropylene and discarded agave fibers (as reinforcing agent) are coupled with pine rosin (in pure or maleated form). Besides, poly(lactic acid) (PLA) with poly(butylene adipate-co-terephthalate) (PBAT) are compatibilized with maleated pine rosins to prepare biodegradable blends. For the coupling agent role, the pure or maleated rosin (Amberyl M-15A) are compared with a commercial polyolefin coupling agent (Epolene E-43), while for the blends, two maleated rosins (Amberyls M-15A and MP-30) are used as compatibilizers. Dynamic and static mechanical tests show considerable increments in moduli and strength for both types of polymeric materials surpassing the role of the Epolene E-43 for the composite materials (v.g. 45.2 vs 16.5 increment in storage modulus, or 61.5 vs 40.3 for Young’s modulus in specific tests). Scanning electron microscopy photographs clearly show the interfacial interaction effect within composites and polymer blends. Fourier transform infrared spectroscopy allowed the observation of the aforementioned interactions at bond level. Blends biodegradation performed by composting for 3 months exceeded 76% of weight loss. The multirole of modified natural maleated gums as coupling agents/compatibilizers is demonstrated.
DOI: 10.6084/m9.figshare.8092592
title: Are computed tomography 3D measurements of the upper airways in mouth-breathing children in agreement with the ENT clinical diagnosis of obstruction?

description: Abstract Introduction: Imaging studies have hystorically been used to support the clinical otorhinolaryngological evaluation of the upper respiratory tract for the diagnosis of obstructive causes of oral breathing. Objective: The objective of this study was to compare 3D volumetric measurements of nasal cavity, nasopharynx and oropharynx of obstructed mouth-breathing children with measurements of non-obstructed mouth-breathing children. Methods: This retrospective study included 25 mouth-breathing children aged 5-9 years evaluated by otorhinolaryngological clinical examination, flexible nasoendoscopy and full-head multi-slice computed tomography. Tomographic volumetric measurements and dichotomic otorhinolaryngological diagnosis (obstructed vs. non-obstructed) in three anatomical regions (the nasal cavity, nasopharynx and oropharynx) were compared and correlated. An independent sample t-test was used to assess the association between the 3D measurements of the upper airways and the otorhinolaryngological diagnosis of obstruction in the three anatomical regions. Inter- and intra-observer intraclass correlation coefficients were used to evaluate the reliability of the 3D measurements. Results: The intra-class correlation coefficients ranged from 0.97 to 0.99. An association was found between turbinate hypertrophy and nasal cavity volume reduction (p &lt; 0.05) and between adenoid hyperplasia and nasopharynx volume reduction (p &lt; 0.001). No association was found between palatine tonsil hyperplasia and oropharynx volume reduction. Conclusions: (1) The nasal cavity volume was reduced when hypertrophic turbinates were diagnosed; (2) the nasopharynx was reduced when adenoid hyperplasia was diagnosed; and (3) the oropharynx volume of mouth-breathing children with tonsil hyperplasia was similar to that of non-obstructed mouth-breathing children. The adoption of the actual anatomy of the various compartments of the upper airway is an improvement to the evaluation method.
DOI: 10.6084/m9.figshare.8092595
title: Candesartan inhibits inflammation through an angiotensin II type 1 receptor independent way in human embryonic kidney epithelial cells

description: Abstract: Besides stimulating vasoconstriction, Angiotensin II is also well known in inducing reactive oxygen species and promoting inflammatory phenotype switch via its type 1 receptor. In clinic, Angiotensin II type 1 (AT1) receptor blocker like candesartan has been widely applied as an antihypertensive medication. We previous have demonstrated that a higher dose of candesartan plays a protective role after kidney injury. However, whether candesartan could exhibit anti-inflammatory effects remains unclear. Here, by stimulating isolated human embryonic kidney epithelial cells with tumor necrosis factor-α (TNF-α), we observed the anti-inflammation capacity of candesartan ex vivo. It was found that pre-treat with candesartan significantly suppressed transforming growth factor-β (TGF-β) and interleukin-6 (IL-6) expression after incubation with TNF-α. Surprisingly, silence of angiotensin II type 1 receptor has little effects on reducing TGF-β or IL-6 products. Furthermore, candesartan inhibited TNF-α-induced oxidative stress in the primary cultured tubular epithelial cells. Overall, our data indicates that candesartan suppresses TNF-α-induced inflammatory cytokine production by inhibiting oxidative stress, rather than block AT1 receptor activity.
DOI: 10.6084/m9.figshare.8092604.v1
title: (Re)enacting the popular: narratives about Brazilian culture in an exhibition

description: Abstract Museums, especially those associated to projects of national identity or that have an argument linked to the State, are generally spaces with little or no openness to diversity of discourses on the memories of events lived and shared by groups or minorities. In this way, we intend to understand how museums (re)construct and (re)enact narratives about Brazilian identities. To this end, we will analyze the discourses of Pavilhão das Culturas Brasileiras, a museum that intends, according to its conceptual design, to present to the public the different practices – material and immaterial – that coexist in the country. We aim to explain how the exhibition that inaugurated the institution, called Puras Misturas, built symbolic relations that enunciated arguments about Brazilian culture. From the analysis of the exhibition, we seek to highlight the contradictions and tensions structured by the ways of exposing popular and hegemonic artifacts in the museum.
DOI: 10.6084/m9.figshare.8092586
title: Seasonal degradation of textile effluents through the solar photo-Fenton process mediated by ferrioxalate: discoloration and behavior of solids

description: ABSTRACT This work evaluates the solar photo-Fenton process mediated by ferrioxalate as a primary treatment of raw textile effluent (E1) and as a polishing step, after active sludge process (E2). For a year, at least once a month, the color removal’s efficiency and solids’ behavior in the oxidative process treatment were analyze under natural conditions of light, temperature and effluents characteristics. The operational parameters values were: 50 mg L-1 iron, pH 5, 525 mg L-1 H2O2, introduced in decreasing doses. The oxalate was added at the molar ratio of 1:3 [Fe+3:(C2O4)-2]. The color removal of E1 was 60% for 690 W m-2 of radiation intensity and 95% for 620 W m-2 intensity to E2. Considerable increases were observed in turbidity and suspended solids due to the iron precipitation and the consequent coagulant action. In sunny days, the complex degradation in E2 resulted in high settle ability of solids in the final effluent, resulting in a clear supernatant. This has not happened in cloudy days.
DOI: 10.6084/m9.figshare.8092589
title: WALTHER NERNST LECTURE IN BRAZIL

description: Walther Hermann Nernst is known to have established the basis for the third law of thermodynamics and also as one of the founders of the modern physical chemistry. For his work in chemical thermodynamics, he was awarded the Nobel Prize in chemistry, in 1920. An important fact about this scientist life, not always realized, was his stay in Brazil, in 1914, for a short period. He went to the city of São Paulo, where he gave a conference at the Faculdade São Bento. He talked about thermodynamics to a very selected audience. The work presented here explores this visit to Brazil, the importance the newspaper gave to this important visitor, and the community present at his lecture. His impression of Brazil was certainly positive, since one of his daughter immigrates to Brazil in 1939. It is hoped the material will add relevant information to the history of chemistry in Brazil.
DOI: 10.6084/m9.figshare.8092595.v1
title: Candesartan inhibits inflammation through an angiotensin II type 1 receptor independent way in human embryonic kidney epithelial cells

description: Abstract: Besides stimulating vasoconstriction, Angiotensin II is also well known in inducing reactive oxygen species and promoting inflammatory phenotype switch via its type 1 receptor. In clinic, Angiotensin II type 1 (AT1) receptor blocker like candesartan has been widely applied as an antihypertensive medication. We previous have demonstrated that a higher dose of candesartan plays a protective role after kidney injury. However, whether candesartan could exhibit anti-inflammatory effects remains unclear. Here, by stimulating isolated human embryonic kidney epithelial cells with tumor necrosis factor-α (TNF-α), we observed the anti-inflammation capacity of candesartan ex vivo. It was found that pre-treat with candesartan significantly suppressed transforming growth factor-β (TGF-β) and interleukin-6 (IL-6) expression after incubation with TNF-α. Surprisingly, silence of angiotensin II type 1 receptor has little effects on reducing TGF-β or IL-6 products. Furthermore, candesartan inhibited TNF-α-induced oxidative stress in the primary cultured tubular epithelial cells. Overall, our data indicates that candesartan suppresses TNF-α-induced inflammatory cytokine production by inhibiting oxidative stress, rather than block AT1 receptor activity.
DOI: 10.6084/m9.figshare.8092583
title: Bank Responses to Corporate Reorganization: Evidence from an Emerging Economy

description: Abstract This study analyzes a unique dataset of 125 corporate reorganization filings in Brazil from 2006 to 2016 to understand the role of bank creditor seniority in bankruptcy outcomes of small- and medium-sized companies. We find that conflict between bank creditor classes is relevant for explaining reorganization outcomes and that it occurs when organizations are in the money. Additionally, bank seniority matters more than the bank’s debt share for explaining bankruptcy outcomes in creditor-oriented regimes. Finally, we find a concave relationship between favorable votes and the number of banks involved and between favorable votes and a company’s age.
DOI: 10.6084/m9.figshare.8092583.v1
title: Bank Responses to Corporate Reorganization: Evidence from an Emerging Economy

description: Abstract This study analyzes a unique dataset of 125 corporate reorganization filings in Brazil from 2006 to 2016 to understand the role of bank creditor seniority in bankruptcy outcomes of small- and medium-sized companies. We find that conflict between bank creditor classes is relevant for explaining reorganization outcomes and that it occurs when organizations are in the money. Additionally, bank seniority matters more than the bank’s debt share for explaining bankruptcy outcomes in creditor-oriented regimes. Finally, we find a concave relationship between favorable votes and the number of banks involved and between favorable votes and a company’s age.
DOI: 10.6084/m9.figshare.8092586.v1
title: Seasonal degradation of textile effluents through the solar photo-Fenton process mediated by ferrioxalate: discoloration and behavior of solids

description: ABSTRACT This work evaluates the solar photo-Fenton process mediated by ferrioxalate as a primary treatment of raw textile effluent (E1) and as a polishing step, after active sludge process (E2). For a year, at least once a month, the color removal’s efficiency and solids’ behavior in the oxidative process treatment were analyze under natural conditions of light, temperature and effluents characteristics. The operational parameters values were: 50 mg L-1 iron, pH 5, 525 mg L-1 H2O2, introduced in decreasing doses. The oxalate was added at the molar ratio of 1:3 [Fe+3:(C2O4)-2]. The color removal of E1 was 60% for 690 W m-2 of radiation intensity and 95% for 620 W m-2 intensity to E2. Considerable increases were observed in turbidity and suspended solids due to the iron precipitation and the consequent coagulant action. In sunny days, the complex degradation in E2 resulted in high settle ability of solids in the final effluent, resulting in a clear supernatant. This has not happened in cloudy days.
DOI: 10.6084/m9.figshare.8092592.v1
title: Are computed tomography 3D measurements of the upper airways in mouth-breathing children in agreement with the ENT clinical diagnosis of obstruction?

description: Abstract Introduction: Imaging studies have hystorically been used to support the clinical otorhinolaryngological evaluation of the upper respiratory tract for the diagnosis of obstructive causes of oral breathing. Objective: The objective of this study was to compare 3D volumetric measurements of nasal cavity, nasopharynx and oropharynx of obstructed mouth-breathing children with measurements of non-obstructed mouth-breathing children. Methods: This retrospective study included 25 mouth-breathing children aged 5-9 years evaluated by otorhinolaryngological clinical examination, flexible nasoendoscopy and full-head multi-slice computed tomography. Tomographic volumetric measurements and dichotomic otorhinolaryngological diagnosis (obstructed vs. non-obstructed) in three anatomical regions (the nasal cavity, nasopharynx and oropharynx) were compared and correlated. An independent sample t-test was used to assess the association between the 3D measurements of the upper airways and the otorhinolaryngological diagnosis of obstruction in the three anatomical regions. Inter- and intra-observer intraclass correlation coefficients were used to evaluate the reliability of the 3D measurements. Results: The intra-class correlation coefficients ranged from 0.97 to 0.99. An association was found between turbinate hypertrophy and nasal cavity volume reduction (p &lt; 0.05) and between adenoid hyperplasia and nasopharynx volume reduction (p &lt; 0.001). No association was found between palatine tonsil hyperplasia and oropharynx volume reduction. Conclusions: (1) The nasal cavity volume was reduced when hypertrophic turbinates were diagnosed; (2) the nasopharynx was reduced when adenoid hyperplasia was diagnosed; and (3) the oropharynx volume of mouth-breathing children with tonsil hyperplasia was similar to that of non-obstructed mouth-breathing children. The adoption of the actual anatomy of the various compartments of the upper airway is an improvement to the evaluation method.
DOI: 10.6084/m9.figshare.8092589.v1
title: WALTHER NERNST LECTURE IN BRAZIL

description: Walther Hermann Nernst is known to have established the basis for the third law of thermodynamics and also as one of the founders of the modern physical chemistry. For his work in chemical thermodynamics, he was awarded the Nobel Prize in chemistry, in 1920. An important fact about this scientist life, not always realized, was his stay in Brazil, in 1914, for a short period. He went to the city of São Paulo, where he gave a conference at the Faculdade São Bento. He talked about thermodynamics to a very selected audience. The work presented here explores this visit to Brazil, the importance the newspaper gave to this important visitor, and the community present at his lecture. His impression of Brazil was certainly positive, since one of his daughter immigrates to Brazil in 1939. It is hoped the material will add relevant information to the history of chemistry in Brazil.
DOI: 10.6084/m9.figshare.8092568
title: A convergência estratégica em Arranjos Produtivos Locais: uma análise sobre a cooperação entre atores em rede em duas regiões cafeeiras

description: Abstract: The development of new local clusters in Brazil is a very important subject in both Brazilian economic and social current scenarios. Geographical Indications (GI) arise with the objective of protecting and valuing typical products and services. These clusters that seek origin recognition need to develop aspects related to local governance and the coordination of diverse relationships and interests. The objective of this paper was to study a consolidated cluster in coffee production, the “Cerrado Mineiro” in search of strategic aspects that explain its success, and, through an action research, to reproduce the strategic categories found in the “Cerrado Mineiro” in the strategic articulation of the construction of the GI of “região Oeste da Bahia”. The results confirm the validation of the theoretical model of strategic convergence for clusters, which is defined as a series of actions and practices of interrelated social actors through a network in a cluster, which have common interests and objectives defined in the (1) organizational (structural), (2) historical and (3) actions to develop and promote a product or service. The process of convergence is not static, it is performative, it modifies the structures of governance and coordination. Understanding the dynamics of these phenomena through different strategic practices would be valuable for future studies, both in coffee and in other GIs.
DOI: 10.6084/m9.figshare.8092574
title: Estimation of precompression stress in an Ultisol cultivated with sugarcane

description: ABSTRACT Compressive soil properties are typically used for the understanding of compaction process. As an alternative to laboratory tests, pedo-transfer functions have been used to estimate the mechanical behaviour of soil as a function of soil physical parameters. The impact of soil bulk density (BD) and gravimetric water content (w) was examined on soil strength and pedo-transfer functions were proposed to predict the precompression stress (σp) in an Ultisol cultivated with sugarcane. Undisturbed soil cores were sampled at the depths of 0-0.20 and 0.20-0.40 m, subjected to different water contents, and subsequently, compression tests were performed to determine σp. The data were subjected to analysis of variance and regression analysis. Bulk density and w affected σp positively and negatively, respectively. Approximately 70% of the variation of the σp could be explained as a function of BD and w through an accessible multiple regression model. Comparisons with other pedo-transfer functions showed that estimates of σp may be rather sensitive to soil management and textural classes. Variations imposed by soil management and cohesive character into depth suggest that independent models should be considered to characterise compressive behaviour of soil by horizon or layer.
DOI: 10.6084/m9.figshare.8092574.v1
title: Estimation of precompression stress in an Ultisol cultivated with sugarcane

description: ABSTRACT Compressive soil properties are typically used for the understanding of compaction process. As an alternative to laboratory tests, pedo-transfer functions have been used to estimate the mechanical behaviour of soil as a function of soil physical parameters. The impact of soil bulk density (BD) and gravimetric water content (w) was examined on soil strength and pedo-transfer functions were proposed to predict the precompression stress (σp) in an Ultisol cultivated with sugarcane. Undisturbed soil cores were sampled at the depths of 0-0.20 and 0.20-0.40 m, subjected to different water contents, and subsequently, compression tests were performed to determine σp. The data were subjected to analysis of variance and regression analysis. Bulk density and w affected σp positively and negatively, respectively. Approximately 70% of the variation of the σp could be explained as a function of BD and w through an accessible multiple regression model. Comparisons with other pedo-transfer functions showed that estimates of σp may be rather sensitive to soil management and textural classes. Variations imposed by soil management and cohesive character into depth suggest that independent models should be considered to characterise compressive behaviour of soil by horizon or layer.
DOI: 10.6084/m9.figshare.8092568.v1
title: A convergência estratégica em Arranjos Produtivos Locais: uma análise sobre a cooperação entre atores em rede em duas regiões cafeeiras

description: Abstract: The development of new local clusters in Brazil is a very important subject in both Brazilian economic and social current scenarios. Geographical Indications (GI) arise with the objective of protecting and valuing typical products and services. These clusters that seek origin recognition need to develop aspects related to local governance and the coordination of diverse relationships and interests. The objective of this paper was to study a consolidated cluster in coffee production, the “Cerrado Mineiro” in search of strategic aspects that explain its success, and, through an action research, to reproduce the strategic categories found in the “Cerrado Mineiro” in the strategic articulation of the construction of the GI of “região Oeste da Bahia”. The results confirm the validation of the theoretical model of strategic convergence for clusters, which is defined as a series of actions and practices of interrelated social actors through a network in a cluster, which have common interests and objectives defined in the (1) organizational (structural), (2) historical and (3) actions to develop and promote a product or service. The process of convergence is not static, it is performative, it modifies the structures of governance and coordination. Understanding the dynamics of these phenomena through different strategic practices would be valuable for future studies, both in coffee and in other GIs.
DOI: 10.6084/m9.figshare.8092553
title: PHYSICAL, MECHANICAL AND THERMAL BEHAVIOR OF ADOBE STABILIZED WITH “SYNTHETIC TERMITE SALIVA”

description: ABSTRACT Adobe is an efficient construction material for several reasons, such as its thermal comfort, sustainability, and lower energy cost, as well as the simplicity of its production and execution. However, challenges such as water absorption, capillarity, and compressive strength should be investigated to improve its physical and mechanical properties. “Synthetic termite saliva” (STS) is an excellent stabilizer with high cohesive and hydrophobic power. Therefore, the objective of this work was to evaluate the effects of STS incorporation into adobe, analyzing its physical, mechanical and thermal properties. Five treatments were studied: 0 (control); 0.1; 0.2; 0.4 and 0.8% STS by mass. These adobe samples were evaluated according to bulk density, linear shrinkage, capillarity, water absorption, thermal conductivity and compressive strength, according to Norma Técnica de Edificación (NTE) E0.80 testing using a new methodology. Linear shrinkage decreases from 2.7 to 1.91 cm with 0.4% STS. Capillarity decreases with the increasing amounts of STS. Water absorption decreased from 12.03 to 6.31% using 0.4% STS, and its mass was reduced from 779 to 19 grams. The thermal conductivity showed no differences between concentrations. The compressive strength was reduced but was still acceptable based on NTE E.080. The stabilization of the adobe using STS showed an improvement in its physical properties, mainly due to its hydrophobic power.