cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7187276
title: Production and usage of a vegetable oil biobased lubricant

description: Abstract Machining is one of the most important manufacturing processes used worldwide in the mechanical industry, and in order to optimize productivity, cutting fluids can be used in the process. Vegetable based fluids present low toxicity as well as good biodegradability and environmental sustainability; however, they also have low oxidative stability. Esters which are obtained from different vegetable oils, maintain the qualities mentioned and provide the required stability. This study presents a production and characterization of the raw materials, methyl esters and epoxidized methyl esters, as well as mainly the comparative evaluation of the cutting fluid formed by these esters with commercial fluids derived from minerals. The emulsions were evaluated regarding the mechanical properties resulting from their use in the process, registration of the temperature obtained during machining, the rough surface the dimensional deviation of the final product and also the evaluation of surface oxidation occurred on the pieces in the medium term. Emulsions containing 5% of esters (methyl and epoxidized methyl) seemed to be the best option, presenting less oxidation of machined pieces, lower working temperature during the process and better surface completion, demonstrating the best performance over the tested fluids.
DOI: 10.6084/m9.figshare.7507169
title: A comprehensive analysis of the current and future role of biofuels for transport in the European Union (EU)

description: The production of biofuels is strongly supported all over the world as a renewable energy source for reducing dependence on the unstable oil market. Bioethanol, the main biofuel produced in the world, is widely used to power vehicles in both the USA and Brazil, but concerns exist in both places regarding its sustainability. In Brazil, it is produced from a by-product of the sugar cane industry, while in the USA it is manufactured from food crops. The production of biogas and biodiesel is growing rapidly, but neither has outpaced the production of bioethanol. The European Union (EU) is greatly interested in this issue, and in 2011 adopted an extensive strategy to reduce carbon dioxide emissions related to transport by 60% by the year 2050. In order to achieve this result, the current European transportation system must be transformed. This ambitious goal will require the implementation of complex measures including the reduction of fossil fuels in favor of renewable fuels. This program has various options regarding the development of biofuels (e. g., biogas, bioethanol and biodiesel) and their related technologies, which are still on trial (mainly regarding the bioethanol production), and must also analyze their sustainability from a social and economic standpoint. The paper discusses the use of biofuels for transport in the European setting, and shows that their sustainability may result in relevant negative social effects due mainly to the use of land for energy crops (e.g., change of food price and world food shortage).
DOI: 10.6084/m9.figshare.7514861.v1
title: Catatonia, beyond a psychiatric syndrome

description: ABSTRACT Although catatonia is a well-known psychiatric syndrome, there are many possible systemic and neurological etiologies. The aim of this case report was to present a case of a patient with cerebral venous sinus thrombosis and infarction in which catatonia was the clinical manifestation of a possible nonconvulsive status epilepticus. To our knowledge, only one such case has been reported in the literature, which had a simplified diagnostic investigation. It is important to correctly recognize the organic cause underlying catatonia in order to treat the patient as soon as possible thereby improving outcome. Therefore, physicians need to update their knowledge on catatonia, recognizing that it can be part of a psychiatric or neurologic condition.
DOI: 10.6084/m9.figshare.7518506
title: Commercial urbanism in Phoenix, AZ: a study of four commercial formats in Arizona

description: Abstract The flourishing of commerce has always influenced the development and growth of cities. Overtime, this relationship has given rise to the emergence of spontaneous and planned commercial formats, depending on people’s needs, technologies of production and distribution, sale and storage techniques and the technical innovation of firms. The Phoenix metropolitan area in Arizona is a complex case study due to its recent commercial developments with a mix of modern and postmodern formats and the transformations and adaptations resulting from the 2008 global financial crisis. This paper analyzes the characteristics of four commercial formats in the Phoenix metropolitan area (the Phoenix public market, a “lifestyle center” in Scottsdale, the Tempe Market Place in Tempe, and the commercial area of Sky Harbor’s terminal 4) and discusses a set of four implications for the future of commercial developments in the western world: local – global, material – sensorial, essential – dispensable, and authentic – illusory.
DOI: 10.6084/m9.figshare.7187276.v1
title: Production and usage of a vegetable oil biobased lubricant

description: Abstract Machining is one of the most important manufacturing processes used worldwide in the mechanical industry, and in order to optimize productivity, cutting fluids can be used in the process. Vegetable based fluids present low toxicity as well as good biodegradability and environmental sustainability; however, they also have low oxidative stability. Esters which are obtained from different vegetable oils, maintain the qualities mentioned and provide the required stability. This study presents a production and characterization of the raw materials, methyl esters and epoxidized methyl esters, as well as mainly the comparative evaluation of the cutting fluid formed by these esters with commercial fluids derived from minerals. The emulsions were evaluated regarding the mechanical properties resulting from their use in the process, registration of the temperature obtained during machining, the rough surface the dimensional deviation of the final product and also the evaluation of surface oxidation occurred on the pieces in the medium term. Emulsions containing 5% of esters (methyl and epoxidized methyl) seemed to be the best option, presenting less oxidation of machined pieces, lower working temperature during the process and better surface completion, demonstrating the best performance over the tested fluids.
DOI: 10.6084/m9.figshare.7367444
title: Degree studies in Information and Documentation in Spain. From their antecedents to the current situation: A critical view

description: Abstract University studies in Documentation Sciences in Spain go back to the 1980s with the implementation of the University degree in Librarianship and Documentation. This was followed later by the Licentiate degree (roughly equivalent to the M.A. degree) and Doctorate courses in Documentation. The process of adapting Spain’s university system to the European Space for Higher Education resulted in the appearance of Bachelors’ degree courses in Information and Documentation. This study presents the origin of these degree courses, their development and current situation, and their antecedents, without which, would be impossible to understand the current reality. The so-called “crisis of Documentation studies in Spain” is analyzed, together with the need to rethink the country’s university studies.
DOI: 10.6084/m9.figshare.7510589
title: Diurnal and seasonal changes of defensive behavior of Africanized bees (“Apis mellifera” L.)

description: SUMMARY The defensive behavior of Apis mellifera L. is a form of protection from predators and prevent theft in the hive. This work aimed to evaluate the diurnal and seasonal variation in defensiveness of Africanized bees through defensive behavior tests. The survey was conducted in three apiaries in the Paraiba state, Brazil. Every apiary had 30 colonies, housed in standard Langstroth hives. From them, 10 colonies were randomly selected and identified from 01 to 10, with similar adult population and raising area. The defensive behavior tests were performed on each hive, one at a time, chosen in three repetitions, the times of 07:00 to 10:00, from 12:00 to 14:00 and 15:00 to 17:00 and in two stages, in a month of the rainy season (April) and another month of the dry season (August), being held only once a month, due to the large loss test by bees. The obtained results showed that the time positively influenced the defensiveness of the analyzed bees, being from 15: 00h to 17: 00h the time of most aggressiveness in both periods of the year. In the dry season the bees showed less defensive than in the rainy season. The analysis of obtained data characterized the bees as highly defensive, with most evident defensiveness at the evening and the rainy season.
DOI: 10.6084/m9.figshare.7518506.v1
title: Commercial urbanism in Phoenix, AZ: a study of four commercial formats in Arizona

description: Abstract The flourishing of commerce has always influenced the development and growth of cities. Overtime, this relationship has given rise to the emergence of spontaneous and planned commercial formats, depending on people’s needs, technologies of production and distribution, sale and storage techniques and the technical innovation of firms. The Phoenix metropolitan area in Arizona is a complex case study due to its recent commercial developments with a mix of modern and postmodern formats and the transformations and adaptations resulting from the 2008 global financial crisis. This paper analyzes the characteristics of four commercial formats in the Phoenix metropolitan area (the Phoenix public market, a “lifestyle center” in Scottsdale, the Tempe Market Place in Tempe, and the commercial area of Sky Harbor’s terminal 4) and discusses a set of four implications for the future of commercial developments in the western world: local – global, material – sensorial, essential – dispensable, and authentic – illusory.
DOI: 10.6084/m9.figshare.7367444.v1
title: Degree studies in Information and Documentation in Spain. From their antecedents to the current situation: A critical view

description: Abstract University studies in Documentation Sciences in Spain go back to the 1980s with the implementation of the University degree in Librarianship and Documentation. This was followed later by the Licentiate degree (roughly equivalent to the M.A. degree) and Doctorate courses in Documentation. The process of adapting Spain’s university system to the European Space for Higher Education resulted in the appearance of Bachelors’ degree courses in Information and Documentation. This study presents the origin of these degree courses, their development and current situation, and their antecedents, without which, would be impossible to understand the current reality. The so-called “crisis of Documentation studies in Spain” is analyzed, together with the need to rethink the country’s university studies.
DOI: 10.6084/m9.figshare.7507550
title: Sediments of watersheds from Frutal and Bebedouro Streams (Frutal, MG, Brazil) as an indicator of human activities

description: Abstract Soil degradation is a physical process intensified by political and socioeconomic factors, and by the population growth of the 20th century. In this study, we evaluated the sediments of the Frutal and Bebedouro Streams, located in Frutal municipality, Minas Gerais State, Brazil, and their relation to major human activities that are responsible soil erosion and silting. Samples were collected between 2012 and 2013 for the determination of granulometric composition, organic matter content, and minerals in sediments. The Wentworth scale was used for particle size measurement, and then the size classes regrouped to ABNT scale (NBR 6502/1995). The results found that agriculture and cattle ranching are the main activities that cause intense erosion and silting in both watersheds. Bebedouro Stream is better preserved, as it is completely located in rural area with larger riparian vegetation, unlike the mid-stretch of Frutal Stream, which is located in an urban area. Quartz is the predominant mineral in the sediments as the soils of the region are formed by sandstones; consequently, few nutritional elements were found in the studied samples. Principal component analysis showed that water quality parameters are correlated to silt/clays and organic matter content in most of the collected stations.
DOI: 10.6084/m9.figshare.7507550.v1
title: Sediments of watersheds from Frutal and Bebedouro Streams (Frutal, MG, Brazil) as an indicator of human activities

description: Abstract Soil degradation is a physical process intensified by political and socioeconomic factors, and by the population growth of the 20th century. In this study, we evaluated the sediments of the Frutal and Bebedouro Streams, located in Frutal municipality, Minas Gerais State, Brazil, and their relation to major human activities that are responsible soil erosion and silting. Samples were collected between 2012 and 2013 for the determination of granulometric composition, organic matter content, and minerals in sediments. The Wentworth scale was used for particle size measurement, and then the size classes regrouped to ABNT scale (NBR 6502/1995). The results found that agriculture and cattle ranching are the main activities that cause intense erosion and silting in both watersheds. Bebedouro Stream is better preserved, as it is completely located in rural area with larger riparian vegetation, unlike the mid-stretch of Frutal Stream, which is located in an urban area. Quartz is the predominant mineral in the sediments as the soils of the region are formed by sandstones; consequently, few nutritional elements were found in the studied samples. Principal component analysis showed that water quality parameters are correlated to silt/clays and organic matter content in most of the collected stations.
DOI: 10.6084/m9.figshare.7510589.v1
title: Diurnal and seasonal changes of defensive behavior of Africanized bees (“Apis mellifera” L.)

description: SUMMARY The defensive behavior of Apis mellifera L. is a form of protection from predators and prevent theft in the hive. This work aimed to evaluate the diurnal and seasonal variation in defensiveness of Africanized bees through defensive behavior tests. The survey was conducted in three apiaries in the Paraiba state, Brazil. Every apiary had 30 colonies, housed in standard Langstroth hives. From them, 10 colonies were randomly selected and identified from 01 to 10, with similar adult population and raising area. The defensive behavior tests were performed on each hive, one at a time, chosen in three repetitions, the times of 07:00 to 10:00, from 12:00 to 14:00 and 15:00 to 17:00 and in two stages, in a month of the rainy season (April) and another month of the dry season (August), being held only once a month, due to the large loss test by bees. The obtained results showed that the time positively influenced the defensiveness of the analyzed bees, being from 15: 00h to 17: 00h the time of most aggressiveness in both periods of the year. In the dry season the bees showed less defensive than in the rainy season. The analysis of obtained data characterized the bees as highly defensive, with most evident defensiveness at the evening and the rainy season.
DOI: 10.6084/m9.figshare.7514537
title: Survey and analysis of optical density of dental films processed manually in portable dark chambers

description: Introduction Intraoral film processing can be performed manually using chambers manufactured from opaque material to prevent light from entering and consequently blurring images. The aim of this study was to evaluate whether portable darkrooms used in offices, clinics and educational institutions prevent the entry of light during the processing of intraoral films. Methods To this end, tests were carried out and images were analyzed by measuring the optical base-plus-fog densities (ODs) upon imaging. Results Review of the OD measurements revealed that in 70.7% of the evaluated manual portable revelation cameras, the base-plus-veil density of intraoral films was not in accord with that of the protocol reference. Discussion The results of this work can be used to identify chambers that are commonly exposed to light from fluorescent lamps and solar lighting.
DOI: 10.6084/m9.figshare.7514537.v1
title: Survey and analysis of optical density of dental films processed manually in portable dark chambers

description: Introduction Intraoral film processing can be performed manually using chambers manufactured from opaque material to prevent light from entering and consequently blurring images. The aim of this study was to evaluate whether portable darkrooms used in offices, clinics and educational institutions prevent the entry of light during the processing of intraoral films. Methods To this end, tests were carried out and images were analyzed by measuring the optical base-plus-fog densities (ODs) upon imaging. Results Review of the OD measurements revealed that in 70.7% of the evaluated manual portable revelation cameras, the base-plus-veil density of intraoral films was not in accord with that of the protocol reference. Discussion The results of this work can be used to identify chambers that are commonly exposed to light from fluorescent lamps and solar lighting.
DOI: 10.6084/m9.figshare.7518089
title: Shading Screens and Substrates for Dipteryx alataVog. Seedling Production

description: ABSTRACTThis study evaluated the technologies of protected environments and substrates for the production of Dipteryx alata Vog. seedlings. Two protected environments were used: agricultural screened, closing at 90 degrees, with black screen on the sides and aluminized screen on the cover, both with 50% shading; agricultural screened, closing at 45 degrees, with black screen on the sides and cover, both with 50% shading. In each environment, substrates composed of mixture of cattle manure (E) and vermiculite (V) at the following ratios were tested: 100% E + 0% V; 90% E + 10% V; 80% E + 20% V; 70% E + 30% V; 60% E + 40% V; 50% E + 50% V; 40% E + 60% V; 30% E + 70%; 20% E + 80% V; 10% E + 90% V. The black screen environment propitiates seedlings of better quality and the substrates with low percentages of cattle manure (10, 20 and 30%) are the most propitious for the formation of Dipteryx alata Vog. seedlings.
DOI: 10.6084/m9.figshare.7518089.v1
title: Shading Screens and Substrates for Dipteryx alataVog. Seedling Production

description: ABSTRACTThis study evaluated the technologies of protected environments and substrates for the production of Dipteryx alata Vog. seedlings. Two protected environments were used: agricultural screened, closing at 90 degrees, with black screen on the sides and aluminized screen on the cover, both with 50% shading; agricultural screened, closing at 45 degrees, with black screen on the sides and cover, both with 50% shading. In each environment, substrates composed of mixture of cattle manure (E) and vermiculite (V) at the following ratios were tested: 100% E + 0% V; 90% E + 10% V; 80% E + 20% V; 70% E + 30% V; 60% E + 40% V; 50% E + 50% V; 40% E + 60% V; 30% E + 70%; 20% E + 80% V; 10% E + 90% V. The black screen environment propitiates seedlings of better quality and the substrates with low percentages of cattle manure (10, 20 and 30%) are the most propitious for the formation of Dipteryx alata Vog. seedlings.
DOI: 10.6084/m9.figshare.7513463
title: Statistical evaluation of a novel SSVEP-BCI stimulation setup based on depth-of-field

description: Abstract Introduction The main drawback of a Brain-computer Interface based on Steady-State Visual Evoked Potential (SSVEP-BCI) that detects the emergence of visual evoked potentials (VEP) in reaction to flickering stimuli is its muscular dependence due to users must redirect their gaze to put the target stimulus in their field of view. In this work, a novel setup is evaluated in which two stimuli are placed together in the center of users' field of view, but with dissimilar distances from them, so that the target selection is performed by focus shifting instead of head, neck and/or eyeball movements. Methods A model of VEP generation for the novel setup was developed. The Spectral F-test based on Bartett periodogram was used to evaluate the null hypothesis of absence of effects of the non-focused stimulus (NFS) within the VEP elicited by the focused stimulus (FS). To reinforce that there is not statistical evidence to support the presence of NFS effects, the PSDA detection method was employed to find the frequency of FS. Electroencephalographic signals of nine subjects were recorded. Results Approximately in 80% of the tests, the null hypothesis with 5% level of significance was non-rejected at the fundamental frequency of NFS. The average of the accuracy rate attained with PSDA detection method was 79.4%. Conclusion Results of this work become further evident to state that if the focused stimulus (FS) will be able to elicit distinguishable VEP pattern regardless the non-focused stimulus (NFS) is also present.
DOI: 10.6084/m9.figshare.7513463.v1
title: Statistical evaluation of a novel SSVEP-BCI stimulation setup based on depth-of-field

description: Abstract Introduction The main drawback of a Brain-computer Interface based on Steady-State Visual Evoked Potential (SSVEP-BCI) that detects the emergence of visual evoked potentials (VEP) in reaction to flickering stimuli is its muscular dependence due to users must redirect their gaze to put the target stimulus in their field of view. In this work, a novel setup is evaluated in which two stimuli are placed together in the center of users' field of view, but with dissimilar distances from them, so that the target selection is performed by focus shifting instead of head, neck and/or eyeball movements. Methods A model of VEP generation for the novel setup was developed. The Spectral F-test based on Bartett periodogram was used to evaluate the null hypothesis of absence of effects of the non-focused stimulus (NFS) within the VEP elicited by the focused stimulus (FS). To reinforce that there is not statistical evidence to support the presence of NFS effects, the PSDA detection method was employed to find the frequency of FS. Electroencephalographic signals of nine subjects were recorded. Results Approximately in 80% of the tests, the null hypothesis with 5% level of significance was non-rejected at the fundamental frequency of NFS. The average of the accuracy rate attained with PSDA detection method was 79.4%. Conclusion Results of this work become further evident to state that if the focused stimulus (FS) will be able to elicit distinguishable VEP pattern regardless the non-focused stimulus (NFS) is also present.
DOI: 10.6084/m9.figshare.12170937
title: The river, the railway and the highway: infrastructure and environment in the occupation of the Tietê floodplain in São Paulo

description: Abstract This paper approaches the ocupation of environmentally sensitive areas in the metropolis of São Paulo, aiming to explain the historical materialization of the floodplain between the neighborhoods of Lapa and Barra Funda, which had the river, the railway and the highways as structuring elements. Through the construction of a historical narrative, mediated by the exercise of interpretative cartography, this paper explains the emergence of the urban landscape on the floodplain, revealing its structuring elements and its occupation, conditioned by different rationalities, and elucidating its current material condition, the basis for the application of contemporary urban instruments. As a result, we highlight the creation of a fragmented landscape and present the allegories that articulate a reflection on the role of infrastructure in the occupation of the natural territory.