cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.9927377
title: Twice-weekly exercise training reduces oxidative stress and proinflammatory cytokine levels in elder women

description: Abstract Aim: Reactive oxygen species and high concentrations of proinflammatory cytokines are related to diseases that are often triggered during the aging process. This study aimed to investigate the effect of moderate-intensity physical exercise, twice a week, on oxidative stress and inflammation biomarkers. Methods: Participants were older women aged 60-70 years, engaged in a moderate-intensity exercise program carried out in 60 minutes sessions, twice a week, for 24 weeks. Exercise sessions consisted of step, resistance and stretch exercises. Thiobarbituric acid reactive substances (TBARS), serum iron and cytokines IL-6, IL-1β and IL-1ra were determined using specific kits. Physical fitness was assessed using tests provided by AAPHERD. A paired t test was performed. Results: Moderate-intensity exercise program provided a reduction in lipid peroxidation (27%) and in the serum release of prooxidant iron ions (40%). Cytokine levels were reduced by 37% for IL-6, 16% for IL-1β and 32% for IL-1ra. Improvements in cardiorespiratory fitness (13%), muscular endurance (11%) and flexibility (12%) were also observed. Conclusion: Diminished redox state and inflammation were obtained using a twice-weekly exercise program. These results have important implications for older adults who are unable or unwilling to attend exercise programs more than twice a week. Moreover, these results could re-establish the minimum exercise activity necessary for obtaining health benefits in the elderly population.
DOI: 10.6084/m9.figshare.9927380
title: BIODEGRADATION OF ACACIA AND CHESTNUT TANNINS BY NATIVE ISOLATES OF THE GENUS Penicillium AND Aspergillus

description: Abstract In the present work, the potential of native isolates of fungi strains to biodegrade vegetable tannins used in the tanning industry was evaluated. Penicillium citrinum showed to be more efficient for consumption of acacia tannin, reaching 94.85%. Aspergillus chevalieri needs a greater adaptation phase (48 h) in both acacia and chestnut medium, evidenced by the slow growth (0.022 h-1) and low biomass productivity (0.31 g.L-1. h-1). The acacia tannin presented a higher COD/BOD ratio (2.97) and lower total phenol content (68%) when compared to chestnut tannin. In addition, there was greater consumption of this tannin in the cultivations, which contradicts previous reports and corroborates the results obtained with FTIR analysis that suggests the biodegradation of acacia by Penicillium citrinum and aethiopicum. The expressive results obtained demonstrated that the biodegradation of condensed tannins may be a promising alternative, with the potential to minimize tannery waste.
DOI: 10.6084/m9.figshare.9927386.v1
title: Does traumatic occlusal forces lead to peri-implant bone loss? A systematic review

description: Abstract Observational studies have indicated that crestal bone level changes at implants are typically associated with clinical signs of inflammation, but still mechanical overload has been described as possible factor leading to hard–tissue deficiencies at implant sites without mucosal inflammation. The aim of this paper was systematically review the literature regarding the possible effect of traumatic occlusal forces on the peri-implant bone levels. Literature search was conducted using PubMed, Scielo and Lilacs, including the following terms: oral OR dental AND implant$ AND (load OR overload OR excessive load OR force$ OR bruxism) AND (bone loss OR bone resorption OR implant failure$). Databases were searched for the past 10 years of publications, including: clinical human studies, either randomized or not, cohort studies, case control studies, case series and animal research. Exclusion criteria were review articles, guidelines and in vitro and in silico (finite element analysis) research, as well as retrospective studies. The PICO questions formulated was: “does traumatic occlusal forces lead to peri-implant bone loss?” The database searches as well as additional hand searching, resulted in 807 potentially relevant titles. After inclusion/exclusion criteria assessment 2 clinical and 4 animal studies were considered relevant to the topic. The included animal studies did not reveal an association between overload and peri-implant bone loss when lower overloads were applied, whereas in the presence of excessive overload it seemed to generate peri-implant bone loss, even in the absence of inflammation. The effect of traumatic occlusal forces in peri-implant bone loss is poorly reported and provides little evidence to support a cause-and-effect relationship in humans, considering the strength of a clinically relevant traumatic occlusal force.
DOI: 10.6084/m9.figshare.9927365
title: GENDER IDEOLOGIES AND LANGUAGE IDEOLOGIES ON FACEBOOK FEMINIST PAGES

description: ABSTRACT: The present study deals with issues of relations between gender ideologies and language ideologies, with a view to discussing the hypothesis of the convergence between linguistic hegemonies and the hegemonic order of gender, underpinned by Western ethnocentric tradition. It has been developed using examples extracted from two feminist activist Facebook communities. These communities have been the object of a virtual ethnographic study since 2013. This research focuses on the metapragmatic function carried out by the comments of the participants in those communities. It is guided by an understanding of language as social action (BAUMAN; BRIGGS, 1990); and of the concepts of “language ideology” (WOOLARD, 1998), discursive conflict (BRIGGS, 1996) and “metapragmatic attack” (JACQUEMET, 1994). The understanding of processes of identity construction in relation to power dispute and control in the contexts of interaction and the social world (SIGNORINI, 1998; MOITA LOPES, 2010) also plays a key role. Gender/sexuality hegemonies as well as linguistic hegemonies are coarticulated in space-time, thereby fulfilling the purposes of (dis)crediting arguments, face-saving (or threatening), and (re)orientating interactions. This occurs particularly when attempting to develop a set of language-use norms, which evokes a school-related cultural model and is capable of establishing relationships between said model and the ability of individuals to understand the gender- and sexuality-related issues under discussion.
DOI: 10.6084/m9.figshare.9927368
title: Family farming in the highlands, north and northwest regions of Rio de Janeiro: determinants of the income generation process

description: Abstract The aim of this paper is to study the perspectives of family farming in serrana, north and northwest regions in Rio de Janeiro state by identifying the determinants of farm income. This paper performs a literature review about family farming in Brazil and the way it has been developing in serrana, north and northwest regions of Rio de Janeiro, showing its economic importance. Aiming to analyze the determinants of farm income, the paper uses multiple regression analysis based on data from the BNDES/UFscar/Cresol research project “Studies to guide new agricultural business opportunities, collective investment and alternative marketing possibilities”. The regression results show that the use of technical assistance by farmers, their participation in rural cooperatives, the area of these establishments and the increase in the years of schooling of the agricultural producer boost the generation of gross income. Therefore, it can be said that public policies that focus on the development of family agriculture should include aspects that involve the education and training of rural producers, as well as encourage participation in rural cooperatives and the use of technical assistance.
DOI: 10.6084/m9.figshare.9927371.v1
title: CHARACTERIZATION-PERFORMANCE OF ZnO AND ZnO/ZnFe2O4 CATALYST USING ARTIFICIAL AND SOLAR LIGHT FOR MERCURY (II) REDUCTION

description: Abstract This study describes the application of ZnO commercial oxide and ZnO/ZnFe2O4 mixed oxides to reduce the mercury ion (Hg2+) in the aqueous phase. The catalysts synthesized were characterized by thermogravimetric analysis, adsorption and desorption of N2, scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, photoacoustic spectroscopy and Mössbauer spectroscopy. The heterogeneous photocatalysis process was studied in synthetic effluent treatment containing mercury chloride (HgCl2) in a batch and solar reactor. The results indicated that commercial ZnO catalyst totally reduced the Hg (II), in all conditions and reaction systems studied. On the other hand, for the mixed oxides (ZnO/ZnFe2O4), there was a decrease in the reduction efficiency in the batch reactor, indicating no ability to reduce Hg(II) in the presence of sunlight.
DOI: 10.6084/m9.figshare.9927380.v1
title: BIODEGRADATION OF ACACIA AND CHESTNUT TANNINS BY NATIVE ISOLATES OF THE GENUS Penicillium AND Aspergillus

description: Abstract In the present work, the potential of native isolates of fungi strains to biodegrade vegetable tannins used in the tanning industry was evaluated. Penicillium citrinum showed to be more efficient for consumption of acacia tannin, reaching 94.85%. Aspergillus chevalieri needs a greater adaptation phase (48 h) in both acacia and chestnut medium, evidenced by the slow growth (0.022 h-1) and low biomass productivity (0.31 g.L-1. h-1). The acacia tannin presented a higher COD/BOD ratio (2.97) and lower total phenol content (68%) when compared to chestnut tannin. In addition, there was greater consumption of this tannin in the cultivations, which contradicts previous reports and corroborates the results obtained with FTIR analysis that suggests the biodegradation of acacia by Penicillium citrinum and aethiopicum. The expressive results obtained demonstrated that the biodegradation of condensed tannins may be a promising alternative, with the potential to minimize tannery waste.
DOI: 10.6084/m9.figshare.9927377.v1
title: Twice-weekly exercise training reduces oxidative stress and proinflammatory cytokine levels in elder women

description: Abstract Aim: Reactive oxygen species and high concentrations of proinflammatory cytokines are related to diseases that are often triggered during the aging process. This study aimed to investigate the effect of moderate-intensity physical exercise, twice a week, on oxidative stress and inflammation biomarkers. Methods: Participants were older women aged 60-70 years, engaged in a moderate-intensity exercise program carried out in 60 minutes sessions, twice a week, for 24 weeks. Exercise sessions consisted of step, resistance and stretch exercises. Thiobarbituric acid reactive substances (TBARS), serum iron and cytokines IL-6, IL-1β and IL-1ra were determined using specific kits. Physical fitness was assessed using tests provided by AAPHERD. A paired t test was performed. Results: Moderate-intensity exercise program provided a reduction in lipid peroxidation (27%) and in the serum release of prooxidant iron ions (40%). Cytokine levels were reduced by 37% for IL-6, 16% for IL-1β and 32% for IL-1ra. Improvements in cardiorespiratory fitness (13%), muscular endurance (11%) and flexibility (12%) were also observed. Conclusion: Diminished redox state and inflammation were obtained using a twice-weekly exercise program. These results have important implications for older adults who are unable or unwilling to attend exercise programs more than twice a week. Moreover, these results could re-establish the minimum exercise activity necessary for obtaining health benefits in the elderly population.
DOI: 10.6084/m9.figshare.9927359
title: Foraging behavior interactions between the invasive Nile Tilapia (Cichliformes: Cichlidae) and three large native predators

description: ABSTRACT The predator-prey relationships between juvenile Nile Tilapia Oreochromis niloticus and native fish species of the Paraná River basin, Brazil, were experimentally examined. Juveniles of O. niloticus were offered to three native predator species (Salminus brasiliensis, Pseudoplatystoma corruscans, and Brycon orbignyanus) in 2,000-L tanks with four levels of habitat complexity (0%, 50%, 100% and RD (rocks and driftwood)). Predator efficiency was more variable among species (S. brasiliensis consumed 86.6% of the prey, P. corruscans 22.5% and B. orbignyanus 18.3%) than among levels of habitat complexity, and S. brasiliensis was faster than the others in detecting and consuming the prey. The higher predatory efficiency observed for S. brasiliensis can be partially explained by its more aggressive behavior (it fed earlier and for longer) and its presence in the surface layer. Here, the presence of predators led to O. niloticus juveniles spending more time at the surface or remaining in schools to coexist at the bottom with the predators, as expected for cichlids under predatory pressure in natural environments. Our results suggest that preserving and restoring populations of S. brasiliensis (and also to some extent P. corruscans and B. orbignyanus) might help to control O. niloticus in the Paraná River basin.
DOI: 10.6084/m9.figshare.9927365.v1
title: GENDER IDEOLOGIES AND LANGUAGE IDEOLOGIES ON FACEBOOK FEMINIST PAGES

description: ABSTRACT: The present study deals with issues of relations between gender ideologies and language ideologies, with a view to discussing the hypothesis of the convergence between linguistic hegemonies and the hegemonic order of gender, underpinned by Western ethnocentric tradition. It has been developed using examples extracted from two feminist activist Facebook communities. These communities have been the object of a virtual ethnographic study since 2013. This research focuses on the metapragmatic function carried out by the comments of the participants in those communities. It is guided by an understanding of language as social action (BAUMAN; BRIGGS, 1990); and of the concepts of “language ideology” (WOOLARD, 1998), discursive conflict (BRIGGS, 1996) and “metapragmatic attack” (JACQUEMET, 1994). The understanding of processes of identity construction in relation to power dispute and control in the contexts of interaction and the social world (SIGNORINI, 1998; MOITA LOPES, 2010) also plays a key role. Gender/sexuality hegemonies as well as linguistic hegemonies are coarticulated in space-time, thereby fulfilling the purposes of (dis)crediting arguments, face-saving (or threatening), and (re)orientating interactions. This occurs particularly when attempting to develop a set of language-use norms, which evokes a school-related cultural model and is capable of establishing relationships between said model and the ability of individuals to understand the gender- and sexuality-related issues under discussion.
DOI: 10.6084/m9.figshare.9927368.v1
title: Family farming in the highlands, north and northwest regions of Rio de Janeiro: determinants of the income generation process

description: Abstract The aim of this paper is to study the perspectives of family farming in serrana, north and northwest regions in Rio de Janeiro state by identifying the determinants of farm income. This paper performs a literature review about family farming in Brazil and the way it has been developing in serrana, north and northwest regions of Rio de Janeiro, showing its economic importance. Aiming to analyze the determinants of farm income, the paper uses multiple regression analysis based on data from the BNDES/UFscar/Cresol research project “Studies to guide new agricultural business opportunities, collective investment and alternative marketing possibilities”. The regression results show that the use of technical assistance by farmers, their participation in rural cooperatives, the area of these establishments and the increase in the years of schooling of the agricultural producer boost the generation of gross income. Therefore, it can be said that public policies that focus on the development of family agriculture should include aspects that involve the education and training of rural producers, as well as encourage participation in rural cooperatives and the use of technical assistance.
DOI: 10.6084/m9.figshare.9927356
title: NEGATIVE EXPRESSIONS IN THE SPEECH OF ONE BRAZILIAN AND ONE FRENCH CHILD: CASE STUDIES

description: ABSTRACT: This work is a longitudinal study of two children, one Brazilian and the other French. It focuses on the development of the expressions of negation in their early speech. It aims at showing that, in the beginning, gesture and vocalization are indissociable and they are provided with meaning through the other's interpretation. We call those expressions “proto-negation”. The functions of the first negative particles uttered by the children are based on the socio-pragmatic classification system of negation developed by Beaupoil-Hourdel (2013). The following categories are considered: rejection/refusal; failed expectations; absence/disappearance; prohibition/command; opposition/correction; negative pleading; epistemic negation; functional negation. The results show that rejection/refusal was the first function to emerge in the speech of both children whereas absence/disappearance was rather late. The progressive complexity of the negations may be dependent on the introduction of personal pronouns in the child's utterances, and on more syntactic and lexical complexity, independently of the target language. On the other hand, actions and vocalizations by the children contribute to the delimitation of a meaningful whole, even with a rather restricted lexicon.
DOI: 10.6084/m9.figshare.9927353
title: SYNTHESIS OF SOLID CATALYST FROM DOLOMITE FOR BIODIESEL PRODUCTION USING PALM KERNEL OIL IN AN OPTIMIZATION PROCESS BY DEFINITIVE SCREENING DESIGN

description: Abstract A solid catalyst for biodiesel production was synthesized from dolomite by calcination at different temperatures of 800 and 900oC for 2 h. The catalyst was characterized by scanning electron microscopy (SEM) and Brunauer Emmett Teller (BET). Its performance in the production of palm kernel biodiesel (PKB) using palm kernel oil in an optimization study was carried out by a definitive screening design. The varying process parameters for the optimization were methanol:oil molar ratio, reaction temperature, catalyst quantity, reaction time and dolomite calcination temperature. Tendency and extent of the catalyst reusability were also studied. The catalysts were found to contain calcium and magnesium oxides with morphological structures of: surface areas 507 and 560 m2/g, pore volumes 0.180 and 0.199 cm3/g, and pore sizes 27.07 and 31.48 Ȃ for Dolomite Catalyst Calcined (DCC) at 800oC (DCC800) and DCC at 900oC (DCC900), respectively. The optimal parameters of methanol:oil molar ratio 12:1, temperature 65oC, catalyst quantity 8% (w/w), time 4 h and DCC800 gave an optimum yield of 98.69% biodiesel. The catalyst was reused for the 8th cycle after which the %yield of PKB decreased by &lt;4%. It can be concluded that the dolomite catalyst has a great activity and potential as a viable catalyst for quality biodiesel production.
DOI: 10.6084/m9.figshare.9927359.v1
title: Foraging behavior interactions between the invasive Nile Tilapia (Cichliformes: Cichlidae) and three large native predators

description: ABSTRACT The predator-prey relationships between juvenile Nile Tilapia Oreochromis niloticus and native fish species of the Paraná River basin, Brazil, were experimentally examined. Juveniles of O. niloticus were offered to three native predator species (Salminus brasiliensis, Pseudoplatystoma corruscans, and Brycon orbignyanus) in 2,000-L tanks with four levels of habitat complexity (0%, 50%, 100% and RD (rocks and driftwood)). Predator efficiency was more variable among species (S. brasiliensis consumed 86.6% of the prey, P. corruscans 22.5% and B. orbignyanus 18.3%) than among levels of habitat complexity, and S. brasiliensis was faster than the others in detecting and consuming the prey. The higher predatory efficiency observed for S. brasiliensis can be partially explained by its more aggressive behavior (it fed earlier and for longer) and its presence in the surface layer. Here, the presence of predators led to O. niloticus juveniles spending more time at the surface or remaining in schools to coexist at the bottom with the predators, as expected for cichlids under predatory pressure in natural environments. Our results suggest that preserving and restoring populations of S. brasiliensis (and also to some extent P. corruscans and B. orbignyanus) might help to control O. niloticus in the Paraná River basin.
DOI: 10.6084/m9.figshare.9927344
title: Does the Use of Adjuvants Alter Surface Tension and Contact Angle of Herbicide Spray Droplets on Leaves of Sida spp.?

description: ABSTRACT: Droplet spreading on plant surfaces may indicate greater efficiency in herbicide application. The aim of this study was to evaluate surface tension and contact angle of the aminopyralid + fluroxypir herbicide droplets associated with adjuvants on the leaf surface of three species of the genus Sida. The experiment was carried out in a completely randomized design, in a 4x2+1 factorial arrangement, with four replications. Four treatments containing two rates of the herbicide (0.04 + 0.08 kg a.i. ha-1 and 0.08+0.16 kg a.i. ha-1) were evaluated, associated or not with the adjuvants vegetable oil, mineral oil and lecthin; and water was used as a control. Surface tension and contact angle of the syringes were measured with a tensiometer. Surface tension was evaluated at 5, 15 and 25 seconds after droplet formation. Contact angle was measured at 5, 15 and 25 seconds after droplet deposition on the adaxial and abaxial surfaces of Sida rhombifolia, S. glaziovii and S. cordifolia. The results were submitted to analysis of variance by the F-test and the means of the treatments were compared by Tukey’s test (p&gt;0.05). There was no interaction between the factors for surface tension. The contact angles of S. cordifolia and S. glaziovii were lower after addition of lecthin on the adaxial face. The addition of the adjuvants to the spray solution provided lower contact angles at the rate of 0.04 + 0.08 kg a.i. ha-1, except for S. rhombifolia, whose contact angle was lower with the spray solution without adjuvant.
DOI: 10.6084/m9.figshare.9927353.v1
title: SYNTHESIS OF SOLID CATALYST FROM DOLOMITE FOR BIODIESEL PRODUCTION USING PALM KERNEL OIL IN AN OPTIMIZATION PROCESS BY DEFINITIVE SCREENING DESIGN

description: Abstract A solid catalyst for biodiesel production was synthesized from dolomite by calcination at different temperatures of 800 and 900oC for 2 h. The catalyst was characterized by scanning electron microscopy (SEM) and Brunauer Emmett Teller (BET). Its performance in the production of palm kernel biodiesel (PKB) using palm kernel oil in an optimization study was carried out by a definitive screening design. The varying process parameters for the optimization were methanol:oil molar ratio, reaction temperature, catalyst quantity, reaction time and dolomite calcination temperature. Tendency and extent of the catalyst reusability were also studied. The catalysts were found to contain calcium and magnesium oxides with morphological structures of: surface areas 507 and 560 m2/g, pore volumes 0.180 and 0.199 cm3/g, and pore sizes 27.07 and 31.48 Ȃ for Dolomite Catalyst Calcined (DCC) at 800oC (DCC800) and DCC at 900oC (DCC900), respectively. The optimal parameters of methanol:oil molar ratio 12:1, temperature 65oC, catalyst quantity 8% (w/w), time 4 h and DCC800 gave an optimum yield of 98.69% biodiesel. The catalyst was reused for the 8th cycle after which the %yield of PKB decreased by &lt;4%. It can be concluded that the dolomite catalyst has a great activity and potential as a viable catalyst for quality biodiesel production.