cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.11997504
title: Characterization of volcanic structures associated to the silicic magmatism of the Paraná-Etendeka Province, in the Aparados da Serra region, southern Brazil

description: Abstract The Paraná-Etendeka Magmatic Province is associated with the distensive tectonics that caused the rupture of the Gondwana continent during the Lower Cretaceous and generated an intense volcanism that covers South America and the NW portion of Namibia in Africa. In Brazil, this volcanic sequence is named Serra Geral Group and predominantly consists of basalts and subordinated silicic rocks. The goal of this study is to characterize the geomorphological features observed in the Aparados da Serra region, southern Brazil, and to evaluate the relationship between these structures and the primary silicic volcanic structures. The geomorphological features were first identified using remote sensing and then correlated with flow structures observed in the field, as well as petrographic and geochemical data. AMS data were used to determine magnetic patterns and the direction of magmatic flow of the rocks. Despite the low degree of anisotropy, clear patterns of lineation and foliation were identified in the studied rocks. Our data shows that Units I and II correspond to silicic lava flows linked to effusive fissure eruptions, presenting a dome morphology caused by differential erosion. Unit III rocks may correspond to true volcanic domes, whereas the Unit IV corresponds to the effusive feeder structures.
DOI: 10.6084/m9.figshare.11997492
title: Fiber-reinforced concrete for the flat bottom of silos

description: ABSTRACT The use of synthetic fibers as reinforcement for concrete replacing the steel reinforcement has been diffused worldwide in several applications, gaining prominence in the application for industrial floors, tunnel linings, road pavements, etc., i.e., continuous structures in contact with soil that require performance in the elastic medium. The present study investigated the applicability of concrete reinforced with synthetic fibers in the bottom slab of silos supported directly on the ground, being composed of an experimental study and a case study. The experimental study consisted of the analysis of the mechanical behavior of this concrete by testing three concentrations of synthetic fibers (3.0, 4.5 and 6.0 kg m-3) in a conventional simple concrete matrix. The case study consisted of the design of this part in conventional reinforced concrete and concrete reinforced with synthetic fibers with the objective of performing an economic comparison between the two projects. The experimental results showed that the fiber concentration that contributed to a better mechanical performance of the concrete matrix was 3.0 kg m-3. The case study showed that the most economical design was the one made with fiber-reinforced concrete.
DOI: 10.6084/m9.figshare.11997492.v1
title: Fiber-reinforced concrete for the flat bottom of silos

description: ABSTRACT The use of synthetic fibers as reinforcement for concrete replacing the steel reinforcement has been diffused worldwide in several applications, gaining prominence in the application for industrial floors, tunnel linings, road pavements, etc., i.e., continuous structures in contact with soil that require performance in the elastic medium. The present study investigated the applicability of concrete reinforced with synthetic fibers in the bottom slab of silos supported directly on the ground, being composed of an experimental study and a case study. The experimental study consisted of the analysis of the mechanical behavior of this concrete by testing three concentrations of synthetic fibers (3.0, 4.5 and 6.0 kg m-3) in a conventional simple concrete matrix. The case study consisted of the design of this part in conventional reinforced concrete and concrete reinforced with synthetic fibers with the objective of performing an economic comparison between the two projects. The experimental results showed that the fiber concentration that contributed to a better mechanical performance of the concrete matrix was 3.0 kg m-3. The case study showed that the most economical design was the one made with fiber-reinforced concrete.
DOI: 10.6084/m9.figshare.11997477
title: Capital budgeting: a systematic review of the literature

description: Abstract Paper aims The purpose of this article is to identify the research opportunities in capital budgeting. Originality This research contributes to the literature by providing a methodology where researchers can potentially identify gaps from budgeting according to the existing scientific literature and contributes to the engineering management practice by to identifying the difficulties found by engineering managers that interfere in the capital budgeting process. Research method It was used the Knowledge Development Process-Constructivist (Proknow-C) tool that can researchers potentially identify gaps from budgeting according to the existing scientific literature. It then explicitly define the frontiers of knowledge and possible opportunities to follow when investigating the field. Main findings Capital budgeting is not shown as a macro research area for the researchers. Few authors have developed research with the same scopes or few of them still research on the theme. Implications for theory and practice The academy advocates that capital budgeting has a key role in business management and, therefore, managers have to use more sophisticated analysis practices. Organizations should seek professionals with experience in capital projects appraisal and who are familiar with and knowledgeable in the use of adequate practices for decision-making.
DOI: 10.6084/m9.figshare.11997474
title: Evaluation of the larvicidal potential of root and leaf extracts of Saussurea costus (Falc.) Lipsch. against three mosquito vectors:Anopheles stephensi, Aedes aegypti, and Culex quinquefasciatus

description: Abstract INTRODUCTION: The larvicidal potential of Saussurea costus (Falc.) Lipsch. was studied against the early 4th instar larvae of Anopheles stephensi Liston., Aedes aegypti Linn.,and Culex quinquefasciatus Say. because of the emergence of mosquito resistance to conventional synthetic insecticides. METHODS: At concentrations of 12.5-200 ppm, larvicidal activities were studied under laboratory conditions. RESULTS: After 24 h of exposure, the methanol extract of the roots recorded the highest larvicidal activity against An. stephensi, with LC50 and LC90values of 7.96 and 34.39 ppm, respectively. CONCLUSIONS: We are developing potent larvicidal compound(s) from S. costus for controlling the mosquito larval population.
DOI: 10.6084/m9.figshare.11997477.v1
title: Capital budgeting: a systematic review of the literature

description: Abstract Paper aims The purpose of this article is to identify the research opportunities in capital budgeting. Originality This research contributes to the literature by providing a methodology where researchers can potentially identify gaps from budgeting according to the existing scientific literature and contributes to the engineering management practice by to identifying the difficulties found by engineering managers that interfere in the capital budgeting process. Research method It was used the Knowledge Development Process-Constructivist (Proknow-C) tool that can researchers potentially identify gaps from budgeting according to the existing scientific literature. It then explicitly define the frontiers of knowledge and possible opportunities to follow when investigating the field. Main findings Capital budgeting is not shown as a macro research area for the researchers. Few authors have developed research with the same scopes or few of them still research on the theme. Implications for theory and practice The academy advocates that capital budgeting has a key role in business management and, therefore, managers have to use more sophisticated analysis practices. Organizations should seek professionals with experience in capital projects appraisal and who are familiar with and knowledgeable in the use of adequate practices for decision-making.
DOI: 10.6084/m9.figshare.11997471
title: AN EXPLORATORY CASE STUDY: WOULD BE SMART BALINESE CITIES (INDONESIA)

description: ABSTRACT The word “Smart Cities” is the buzzword in every corner of the world. Many countries across the continents are trying to plant new smart cities or in the conversion process of existing cities. Bali (Indonesia) also seems to be in a conversion process of its Brown Field Cities. This research manuscript attempts to explore the Bali (Island) as a Smart Island regarding Smart Environment, Smart Economy, Smart Governance, Smart Mobility, Smart Living and Smart People dimensional perspective. This research manuscript has adopted a triangulation method for thematic narration since the study is qualitative and case study. The study explored that Bali/Balinese cities is/are still baby stepping of smart cities plantations. There needs to be lot of work has to be done to become Smart Bali Island. The findings will help the Bali government to understand how far they could become full-fledged Smart Island by providing the Quality of Life to citizens and economic development.
DOI: 10.6084/m9.figshare.11997471.v1
title: AN EXPLORATORY CASE STUDY: WOULD BE SMART BALINESE CITIES (INDONESIA)

description: ABSTRACT The word “Smart Cities” is the buzzword in every corner of the world. Many countries across the continents are trying to plant new smart cities or in the conversion process of existing cities. Bali (Indonesia) also seems to be in a conversion process of its Brown Field Cities. This research manuscript attempts to explore the Bali (Island) as a Smart Island regarding Smart Environment, Smart Economy, Smart Governance, Smart Mobility, Smart Living and Smart People dimensional perspective. This research manuscript has adopted a triangulation method for thematic narration since the study is qualitative and case study. The study explored that Bali/Balinese cities is/are still baby stepping of smart cities plantations. There needs to be lot of work has to be done to become Smart Bali Island. The findings will help the Bali government to understand how far they could become full-fledged Smart Island by providing the Quality of Life to citizens and economic development.
DOI: 10.6084/m9.figshare.11997474.v1
title: Evaluation of the larvicidal potential of root and leaf extracts of Saussurea costus (Falc.) Lipsch. against three mosquito vectors:Anopheles stephensi, Aedes aegypti, and Culex quinquefasciatus

description: Abstract INTRODUCTION: The larvicidal potential of Saussurea costus (Falc.) Lipsch. was studied against the early 4th instar larvae of Anopheles stephensi Liston., Aedes aegypti Linn.,and Culex quinquefasciatus Say. because of the emergence of mosquito resistance to conventional synthetic insecticides. METHODS: At concentrations of 12.5-200 ppm, larvicidal activities were studied under laboratory conditions. RESULTS: After 24 h of exposure, the methanol extract of the roots recorded the highest larvicidal activity against An. stephensi, with LC50 and LC90values of 7.96 and 34.39 ppm, respectively. CONCLUSIONS: We are developing potent larvicidal compound(s) from S. costus for controlling the mosquito larval population.
DOI: 10.6084/m9.figshare.11997462
title: PLANNED BEHAVIOR AND RELIGIOUS BELIEFS AS ANTECEDENTS TO ENTREPRENEURIAL INTENTION: A STUDY WITH UNIVERSITY STUDENTS

description: ABSTRACT Purpose: To investigate the relationship between religious beliefs and the constructs of the Theory of Planned Behavior in entrepreneurial intention. Originality/value: The article stands out by promoting the understanding of entrepreneurship from the Theory of Planned Behavior proposed by Ajzen (1991), aligning it with religious beliefs. Design/methodology/approach: It is an exploratory and descriptive study, of a quantitative nature. The survey method was used to collect the data, in which a sample of 448 students from the Business Administration courses at two public universities in the northeast of Brazil was obtained. Structural Equation Modeling was used to treat and analyze the data. Findings: The results demonstrated that personal attitude, perceived control, and religious beliefs influence the entrepreneurial intention of university students, which did not occur with subjective norms. However, subjective norms influenced the personal attitude and perceived control of university students. The university students presented a predisposition to entrepreneurship and recognized that they have the necessary skills to create a business. However, the choice to become an entre preneur may not be motivated directly by the expectation of its social referents. Moreover, university students did not perceive the influence of religious beliefs in the manifestation of their behavior, because vocation and prosocial motivation are far from the environmental context in which university students are inserted or because they are not practicing a religion that fosters such beliefs.
DOI: 10.6084/m9.figshare.11997462.v1
title: PLANNED BEHAVIOR AND RELIGIOUS BELIEFS AS ANTECEDENTS TO ENTREPRENEURIAL INTENTION: A STUDY WITH UNIVERSITY STUDENTS

description: ABSTRACT Purpose: To investigate the relationship between religious beliefs and the constructs of the Theory of Planned Behavior in entrepreneurial intention. Originality/value: The article stands out by promoting the understanding of entrepreneurship from the Theory of Planned Behavior proposed by Ajzen (1991), aligning it with religious beliefs. Design/methodology/approach: It is an exploratory and descriptive study, of a quantitative nature. The survey method was used to collect the data, in which a sample of 448 students from the Business Administration courses at two public universities in the northeast of Brazil was obtained. Structural Equation Modeling was used to treat and analyze the data. Findings: The results demonstrated that personal attitude, perceived control, and religious beliefs influence the entrepreneurial intention of university students, which did not occur with subjective norms. However, subjective norms influenced the personal attitude and perceived control of university students. The university students presented a predisposition to entrepreneurship and recognized that they have the necessary skills to create a business. However, the choice to become an entre preneur may not be motivated directly by the expectation of its social referents. Moreover, university students did not perceive the influence of religious beliefs in the manifestation of their behavior, because vocation and prosocial motivation are far from the environmental context in which university students are inserted or because they are not practicing a religion that fosters such beliefs.
DOI: 10.6084/m9.figshare.11997453
title: Electromagnetic Energy Harvesting Using a Glass Window

description: Abstract In this work, a new constructive and conceptual model for rectenna, using glass as dielectric substrate, was proposed. This research aims to produce a window for building facades that can harvest the electromagnetic energy available in the environment. For this proposal, a slotted patch antenna was designed with two main objectives: to have a low value of S11 parameter and to allow the maximum visibility through the glass. In order to accomplish an efficient radio frequency to direct current conversion, a voltage doubler rectifier was designed and built in the same glass substrate, directly connected to the antenna. The final system is a window composed of eight individual rectennas associated in parallel. For improving the window energy harvesting ability, a metamaterial structure was added to each rectenna element, which acts in order increases the patch antenna gain. Each rectenna was designed by using both Advanced Design System and Computer Simulation Technology softwares and optimized to operate at 2.45 GHz. The measured results show that the proposed rectenna model is an efficient solution to improve the total amount of harvested energy, which is enough to power a low consumption load.
DOI: 10.6084/m9.figshare.11997444
title: Modified Ring Power Divider Using Stepped-Impedance Resonator

description: Abstract In this paper, the design of a modified ring power divider dedicated for wideband communication or measurement systems is presented. The proposed power divider is built by using a conventional ring power divider and an additional Stepped-Impedance Resonator (SIR). The even-odd mode analysis is used to derive the design equations. In order to observe the bandwidth improvement, a comparative study between the designed device and the previously reported ring power divider is conducted. The electromagnetic (EM) simulated results show that the proposed divider has a fractional bandwidth of 90.2 % at the center frequency of 3.17 GHz. The measurement results of the fabricated prototype demonstrate high performance over the considered operational bandwidth from 1.7 GHz to 4.64 GHz with a return loss lower than −10 dB while maintaining a good insertion loss and a good isolation between the output ports. The maximum amplitude imbalance is better than 0.21 dB and the phase imbalance is better than 2.5 degrees between the output signals. The simulation and measurement results are in good agreement over the whole band of interest.
DOI: 10.6084/m9.figshare.11997444.v1
title: Modified Ring Power Divider Using Stepped-Impedance Resonator

description: Abstract In this paper, the design of a modified ring power divider dedicated for wideband communication or measurement systems is presented. The proposed power divider is built by using a conventional ring power divider and an additional Stepped-Impedance Resonator (SIR). The even-odd mode analysis is used to derive the design equations. In order to observe the bandwidth improvement, a comparative study between the designed device and the previously reported ring power divider is conducted. The electromagnetic (EM) simulated results show that the proposed divider has a fractional bandwidth of 90.2 % at the center frequency of 3.17 GHz. The measurement results of the fabricated prototype demonstrate high performance over the considered operational bandwidth from 1.7 GHz to 4.64 GHz with a return loss lower than −10 dB while maintaining a good insertion loss and a good isolation between the output ports. The maximum amplitude imbalance is better than 0.21 dB and the phase imbalance is better than 2.5 degrees between the output signals. The simulation and measurement results are in good agreement over the whole band of interest.
DOI: 10.6084/m9.figshare.11997453.v1
title: Electromagnetic Energy Harvesting Using a Glass Window

description: Abstract In this work, a new constructive and conceptual model for rectenna, using glass as dielectric substrate, was proposed. This research aims to produce a window for building facades that can harvest the electromagnetic energy available in the environment. For this proposal, a slotted patch antenna was designed with two main objectives: to have a low value of S11 parameter and to allow the maximum visibility through the glass. In order to accomplish an efficient radio frequency to direct current conversion, a voltage doubler rectifier was designed and built in the same glass substrate, directly connected to the antenna. The final system is a window composed of eight individual rectennas associated in parallel. For improving the window energy harvesting ability, a metamaterial structure was added to each rectenna element, which acts in order increases the patch antenna gain. Each rectenna was designed by using both Advanced Design System and Computer Simulation Technology softwares and optimized to operate at 2.45 GHz. The measured results show that the proposed rectenna model is an efficient solution to improve the total amount of harvested energy, which is enough to power a low consumption load.
DOI: 10.6084/m9.figshare.11997432
title: Antibiotic resistance and virulence factors among Escherichia coli isolates from avian organic fertilizer

description: ABSTRACT: Brazilian poultry industry generates large amounts of organic waste, such as chicken litter, which is often used in agriculture. Among the bacteria present in organic fertilizer are members of the Enterobacteriaceae family, such as Escherichia coli. The aim of this study was to analyze the profile of virulence factors and antimicrobial resistance of E. coli isolates from avian organic fertilizer. A total of 47 E. coli strains were tested through Polymerase chain reaction to detect virulence genes (hlyF, iss, ompT, iutA and iroN). Fourteen antimicrobials were used to test antimicrobial susceptibility in the strains. Genes characteristic of Avian Pathogenic E. coli (APEC) were reported among the strains, with the hlyF, iss and ompT genes being the most prevalent. The isolates showed high resistance (˃50%) to tetracycline, gentamicin, cefotaxime, nitrofurantoin, trimethoprim-sulfamethoxazole and ampicillin. Multidrug resistance was reported in a great number of strains (&gt;70%). The results showed the presence of APEC cells with virulence genes and antimicrobial resistance after 15 days of the windrowing process in poultry houses, it means this process should be improved to eliminate these cells.
DOI: 10.6084/m9.figshare.11997435
title: Association between statin use and mortality risks during the acute phase of ischemic stroke in patients admitted to an intensive care unit

description: Abstract Ischemic stroke is a common cause of death. The role of statins in the secondary prevention of the chronic ischemic stroke phase has been established. However, evidence regarding their efficacy in this phase is limited and contradictory. Objective: To evaluate the association between statin use and mortality risk during the acute phase of ischemic stroke in patients admitted to an intensive care unit. Methods: This was an observational and prospective study of ischemic stroke patients aged ≥18, admitted to an intensive care unit. Medications used during the first 7 days after the ictus, as well as medications used previously, were recorded. The primary outcome was all-cause mortality during the first 7 days. Results: We screened 212 patients and included 97 patients with ischemic stroke in the study period. The mortality rate among patients who used statins during the acute IS phase [14% (9/63)] was significantly lower than that among patients who did not use statins [41% (14/34); p=0.007]. This was confirmed in logistical regression with an 0.19 Odds Ratio - OR [p=0.018; 95% confidence interval - 95%CI 0.05-0.75]. Patients who died were older, had a higher incidence of acute myocardial infarction, higher scores on the NIHSS and lower systolic blood pressure. Statins and angiotensin converting enzyme inhibitors were used more frequently among survivors. These associations persisted even after adjustment for confounding variables. Conclusion: Statins and angiotensin converting enzyme inhibitors use during hospitalization were independently associated to a lower rate of all-cause mortality in the first 7 days of intensive care unit admission.