cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7245062
title: How Linear Algebra Entered the Curriculum of the First Brazilian University

description: Abstract A major factor resulting in the consolidation of linear algebra as a new branch of mathematics in the early 20th century was the efforts made by 18th and 19th-century scientists to develop a system of calculation that, intrinsic to geometric elements, allowed geometry problems to be solved by using the analytical method. Drawing on this premise, we describe in this article the process by which linear algebra was initially introduced as a teaching content, before gaining the academic course status, into the undergraduate programs in mathematics and engineering at the University of São Paulo (USP). Particularly relevant to this process was the role played by French mathematicians, especially members of the Bourbaki Group, who taught at USP during the 1945-1966 period. In the mathematics program of USP's School of Philosophy, Sciences, and Languages, linear algebra was a teaching content on the Geometry Complements course from the early 1950s up until 1964. Only in 1965 was a course entitled Linear Algebra introduced into the program's curriculum. In the São Paulo Polytechnic School's Engineering Programs, however, linear algebra had been taught since 1961 as a full-fledged course called Elements of Linear Algebra and Analytical Geometry, renaming the course previously called Elements of Analytical and Projective Geometry, in which linear algebra had constituted a teaching content since 1958.
DOI: 10.6084/m9.figshare.7245065.v1
title: Prevalence of anxious and depressive symptoms in college students of a public institution

description: ABSTRACT Objective: Identify the prevalence of anxious and depressive symptoms and their correlations with sociodemographic and occupational characteristics in university students. Method: This is census, cross-sectional and analytical study, developed with nursing students of a federal public university in the Northeast of Brazil in the months of September and October 2016. 205 university students of all the periods of the course attended the study. Beck’s inventories for anxiety and depression were applied. Results: Most of the participants were female, single, native of the state capital and living with his parents. The prevalence of depression was 30.2% and of anxiety, 62.9%. Association between the level of depressive symptoms, work, sex and leisure was identified. Conclusion: The prevalence of symptoms of anxiety and depression was quite expressive, lacking, thus, more attention to the promotion of mental health of nursing students.
DOI: 10.6084/m9.figshare.7245062.v1
title: How Linear Algebra Entered the Curriculum of the First Brazilian University

description: Abstract A major factor resulting in the consolidation of linear algebra as a new branch of mathematics in the early 20th century was the efforts made by 18th and 19th-century scientists to develop a system of calculation that, intrinsic to geometric elements, allowed geometry problems to be solved by using the analytical method. Drawing on this premise, we describe in this article the process by which linear algebra was initially introduced as a teaching content, before gaining the academic course status, into the undergraduate programs in mathematics and engineering at the University of São Paulo (USP). Particularly relevant to this process was the role played by French mathematicians, especially members of the Bourbaki Group, who taught at USP during the 1945-1966 period. In the mathematics program of USP's School of Philosophy, Sciences, and Languages, linear algebra was a teaching content on the Geometry Complements course from the early 1950s up until 1964. Only in 1965 was a course entitled Linear Algebra introduced into the program's curriculum. In the São Paulo Polytechnic School's Engineering Programs, however, linear algebra had been taught since 1961 as a full-fledged course called Elements of Linear Algebra and Analytical Geometry, renaming the course previously called Elements of Analytical and Projective Geometry, in which linear algebra had constituted a teaching content since 1958.
DOI: 10.7284/135014
title: Multibeam Echosounder data collected during research cruise SKQ201903S using a Kongsberg EM302 instrument system onboard the platform RV Sikuliaq

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7245050
title: The Cartesian Plane in Fifth Grade students: its Re-signification on a Specific Situation

description: Abstract We report the results of a research on the re-signification of the Cartesian plane in a group of fifth-grade students of a Chilean school. The corresponding mathematical school discourse lacks meaningful teaching situations to introduce and to understand the use of that plane, and rather fosters a prescribed mathematics, that you do not need to build. That re-signification was evidenced through the design of a specific situation promoting the need of building the Cartesian plane. In the arguments and discussion held, the group evidenced building orthogonal axes, and the notions of distance, origin, and location of points considering rectangular coordinates
DOI: 10.6084/m9.figshare.7245053
title: Partial replacement of artificial diets by wet bioflocs biomass in Nile tilapia culture tanks

description: ABSTRACT. The present work aimed to assess the partial replacement of artificial diets by wet bioflocs biomass in the culture of Nile tilapia juveniles. Fish were fed on different combinations of commercial dry diets (CD) and wet bioflocs biomass (BF), as it follows: 75% CD + 25% BF, 50% CD + 50% BF, and 25% CD + 75% BF, dry matter basis. There were also positive control tanks in which the fish received only commercial diet (100% CD), and three negative control tanks where the reductions of dry diets were not compensated by wet bioflocs biomass (75% CD, 50% CD, and 25% CD). Bioflocs were produced in one 500-L outdoor tank, which did not belong to the culture system, and it was called “separate BFT tank”, in which there was a daily adjustment of the C: N ratio of water to 15: 1, by the application of dry molasses to the water. There were no significant differences between the treatments for water pH, O2, TAN and NH3. Except by 25% CD, nitrite concentrations in water were lower in bioflocs tanks than in the artificial diet tanks. The final body weight of fish was significantly higher in tanks that received only dry diets (21.9 ± 6.4 g) than in tanks with a combination of 50% dry diet and 50% wet bioflocs biomass (10.4 ± 2.5 g; p &lt; 0.05). It can be concluded that the impairment on the growth performance of tilapia submitted to feeding restriction is lessened if wet bioflocs biomass is provided to the animals. Besides, the total substitution of artificial diets for wet bioflocs biomass in clear-water tanks is unfeasible because it leads to higher rates of mortality of tilapia in a relatively short period.
DOI: 10.6084/m9.figshare.7245053.v1
title: Partial replacement of artificial diets by wet bioflocs biomass in Nile tilapia culture tanks

description: ABSTRACT. The present work aimed to assess the partial replacement of artificial diets by wet bioflocs biomass in the culture of Nile tilapia juveniles. Fish were fed on different combinations of commercial dry diets (CD) and wet bioflocs biomass (BF), as it follows: 75% CD + 25% BF, 50% CD + 50% BF, and 25% CD + 75% BF, dry matter basis. There were also positive control tanks in which the fish received only commercial diet (100% CD), and three negative control tanks where the reductions of dry diets were not compensated by wet bioflocs biomass (75% CD, 50% CD, and 25% CD). Bioflocs were produced in one 500-L outdoor tank, which did not belong to the culture system, and it was called “separate BFT tank”, in which there was a daily adjustment of the C: N ratio of water to 15: 1, by the application of dry molasses to the water. There were no significant differences between the treatments for water pH, O2, TAN and NH3. Except by 25% CD, nitrite concentrations in water were lower in bioflocs tanks than in the artificial diet tanks. The final body weight of fish was significantly higher in tanks that received only dry diets (21.9 ± 6.4 g) than in tanks with a combination of 50% dry diet and 50% wet bioflocs biomass (10.4 ± 2.5 g; p &lt; 0.05). It can be concluded that the impairment on the growth performance of tilapia submitted to feeding restriction is lessened if wet bioflocs biomass is provided to the animals. Besides, the total substitution of artificial diets for wet bioflocs biomass in clear-water tanks is unfeasible because it leads to higher rates of mortality of tilapia in a relatively short period.
DOI: 10.6084/m9.figshare.7245044
title: Metastatic choroidal melanoma to the contralateral eye: a rare case

description: ABSTRACT Uveal melanoma is the most common adult primary intraocular cancer. Although liver metastasis is common to the natural history of the disease, metastasis to the fellow eye is extremely rare. Here we report the case of a 59-year-old man with choroidal melanoma in his right eye who underwent enucleation at a different center. The patient was referred to our service 21 months postoperatively, complaining of decreased vision. He was found to have a new pigmented choroidal tumor in his left eye associated with liver disease. Ocular ultrasonography and liver biopsy with histopathological and immunohistochemical analysis were performed and confirmed the diagnosis. Few similar cases have been described in the literature. The differential diagnosis included primary bilateral choroidal melanoma and metastatic choroidal tumor from a primary skin melanoma.
DOI: 10.6084/m9.figshare.7245047
title: TRANSFER OF NERVE BRANCHES OF THE FLEXOR CARPI RADIALIS TO THE POSTERIOR INTEROSSEOUS NERVE

description: ABSTRACT Objective: The objective of this paper was to study the anatomical variations of the flexor carpi radialis muscle (FCR) and determine in cadaver limbs whether the FCR nervous branch can be connected to the posterior interosseous nerve (PIN) without tension and how close to the target muscles the transfer can be performed. Method: Thirty cadaveric upper limbs were dissected. Results: The FCR received exclusive innervation of the median nerve, distally to the intercondylar line of the humerus. In 5 limbs, an isolated branch was found and in 25, a common trunk with other nervous branches occurred. We investigated whether the branch for the FCR was long enough to be transferred to the PIN. The diameter of the nerve branch for the FCR corresponded on average to 50% of the PIN. Conclusion: In 12 limbs, the branch destined to the FCR could be connected to the PIN, distally to the nerve branches to the supinator muscle even during the movements of the forearm and the elbow. In 18 specimens, it was necessary to mobilize the PIN for this innervation. Level of Evidence IV, Case Series.
DOI: 10.6084/m9.figshare.7245050.v1
title: The Cartesian Plane in Fifth Grade students: its Re-signification on a Specific Situation

description: Abstract We report the results of a research on the re-signification of the Cartesian plane in a group of fifth-grade students of a Chilean school. The corresponding mathematical school discourse lacks meaningful teaching situations to introduce and to understand the use of that plane, and rather fosters a prescribed mathematics, that you do not need to build. That re-signification was evidenced through the design of a specific situation promoting the need of building the Cartesian plane. In the arguments and discussion held, the group evidenced building orthogonal axes, and the notions of distance, origin, and location of points considering rectangular coordinates
DOI: 10.7284/135015
title: Multibeam Echosounder data collected during research cruise SKQ201903S using a Kongsberg EM302 instrument system onboard the platform RV Sikuliaq

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7245047.v1
title: TRANSFER OF NERVE BRANCHES OF THE FLEXOR CARPI RADIALIS TO THE POSTERIOR INTEROSSEOUS NERVE

description: ABSTRACT Objective: The objective of this paper was to study the anatomical variations of the flexor carpi radialis muscle (FCR) and determine in cadaver limbs whether the FCR nervous branch can be connected to the posterior interosseous nerve (PIN) without tension and how close to the target muscles the transfer can be performed. Method: Thirty cadaveric upper limbs were dissected. Results: The FCR received exclusive innervation of the median nerve, distally to the intercondylar line of the humerus. In 5 limbs, an isolated branch was found and in 25, a common trunk with other nervous branches occurred. We investigated whether the branch for the FCR was long enough to be transferred to the PIN. The diameter of the nerve branch for the FCR corresponded on average to 50% of the PIN. Conclusion: In 12 limbs, the branch destined to the FCR could be connected to the PIN, distally to the nerve branches to the supinator muscle even during the movements of the forearm and the elbow. In 18 specimens, it was necessary to mobilize the PIN for this innervation. Level of Evidence IV, Case Series.
DOI: 10.6084/m9.figshare.7245038
title: Independent Predictors of Late Presentation in Patients with ST-Segment Elevation Myocardial Infarction

description: Abstract Background: In patients with acute ST-segment elevation myocardial infarction (STEMI), the time elapsed from symptom onset to receiving medical care is one of the main mortality predictors. Objective: To identify independent predictors of late presentation in patients STEMI representative of daily clinical practice. Methods: All patients admitted with a diagnosis of STEMI in a reference center between December 2009 and November 2014 were evaluated and prospectively followed during hospitalization and for 30 days after discharge. Late presentation was defined as a time interval &gt; 6 hours from chest pain onset until hospital arrival. Multiple logistic regression analysis was used to identify independent predictors of late presentation. Values of p &lt; 0.05 were considered statistically significant. Results: A total of 1,297 patients were included, with a mean age of 60.7 ± 11.6 years, of which 71% were males, 85% Caucasians, 72% had a mean income lower than five minimum wages and 66% had systemic arterial hypertension. The median time of clinical presentation was 3.00 [1.40-5.48] hours, and approximately one-quarter of the patients had a late presentation, with their mortality being significantly higher. The independent predictors of late presentation were Black ethnicity, low income and diabetes mellitus, and a history of previous heart disease was a protective factor. Conclusion: Black ethnicity, low income and diabetes mellitus are independent predictors of late presentation in STEMI. The identification of subgroups of patients prone to late presentation may help to stimulate prevention policies for these high-risk individuals.
DOI: 10.6084/m9.figshare.7245041
title: Estimation of Irrigation Water Pumping by Remote Sensing: Application of the SAMIR Model to Citrus under Mediterranean Climate Conditions

description: Abstract Agricultural intensification has led to overexploitation of water resources, in particular of the underground resource. Estimating groundwater exploitation remains a serious problem in arid and semi-arid countries such as Algeria. The objective of this work is to estimate volumes of pumped irrigation water using the SAtellite Monitoring of Irrigation (SAMIR) model from satellite imagery. Eleven (11) Landsat-TM images covering an area of 20 hectares of citrus orchards with a drip irrigation system were used. Irrigation volumes simulated by SAMIR were compared with volumes of pumped irrigation water. The latter were recorded digitally by specific programmers over a one-year observation period. The results shows a slight discrepancy between total simulated and observed volumes, 138,782 m3 and 135,688.5 m3, respectively. The index of agreement d and RMSE were 80.94 and 0.11, respectively, while the ratio of observed to simulated volumes varied from 0.76 to 1.27. 65% of the values compared differed by less than 10%. A significant correlation was found between the two methods. This confirms the feasibility of estimating pumping by remote sensing without calculating theoretical crop water requirements.
DOI: 10.6084/m9.figshare.7245044.v1
title: Metastatic choroidal melanoma to the contralateral eye: a rare case

description: ABSTRACT Uveal melanoma is the most common adult primary intraocular cancer. Although liver metastasis is common to the natural history of the disease, metastasis to the fellow eye is extremely rare. Here we report the case of a 59-year-old man with choroidal melanoma in his right eye who underwent enucleation at a different center. The patient was referred to our service 21 months postoperatively, complaining of decreased vision. He was found to have a new pigmented choroidal tumor in his left eye associated with liver disease. Ocular ultrasonography and liver biopsy with histopathological and immunohistochemical analysis were performed and confirmed the diagnosis. Few similar cases have been described in the literature. The differential diagnosis included primary bilateral choroidal melanoma and metastatic choroidal tumor from a primary skin melanoma.
DOI: 10.7284/135005
title: Radiometer data collected during research cruise SKQ201903S using a RMR Co. PRP instrument system onboard the platform RV Sikuliaq

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7245038.v1
title: Independent Predictors of Late Presentation in Patients with ST-Segment Elevation Myocardial Infarction

description: Abstract Background: In patients with acute ST-segment elevation myocardial infarction (STEMI), the time elapsed from symptom onset to receiving medical care is one of the main mortality predictors. Objective: To identify independent predictors of late presentation in patients STEMI representative of daily clinical practice. Methods: All patients admitted with a diagnosis of STEMI in a reference center between December 2009 and November 2014 were evaluated and prospectively followed during hospitalization and for 30 days after discharge. Late presentation was defined as a time interval &gt; 6 hours from chest pain onset until hospital arrival. Multiple logistic regression analysis was used to identify independent predictors of late presentation. Values of p &lt; 0.05 were considered statistically significant. Results: A total of 1,297 patients were included, with a mean age of 60.7 ± 11.6 years, of which 71% were males, 85% Caucasians, 72% had a mean income lower than five minimum wages and 66% had systemic arterial hypertension. The median time of clinical presentation was 3.00 [1.40-5.48] hours, and approximately one-quarter of the patients had a late presentation, with their mortality being significantly higher. The independent predictors of late presentation were Black ethnicity, low income and diabetes mellitus, and a history of previous heart disease was a protective factor. Conclusion: Black ethnicity, low income and diabetes mellitus are independent predictors of late presentation in STEMI. The identification of subgroups of patients prone to late presentation may help to stimulate prevention policies for these high-risk individuals.
DOI: 10.6084/m9.figshare.7245035
title: Association of Ugrp2 gene polymorphisms with adenoid hypertrophy in the pediatric population

description: Abstract Introduction: Adenoid hypertrophy is a condition that presents itself as the chronic enlargement of adenoid tissues; it is frequently observed in the pediatric population. The Ugrp2 gene, a member of the secretoglobin superfamily, encodes a low-molecular weight protein that functions in the differentiation of upper airway epithelial cells. However, little is known about the association of Ugrp2 genetic variations with adenoid hypertrophy. Objective: The aim of this study is to investigate the association of single nucleotide polymorphisms in the Ugrp2 gene with adenoid hypertrophy and its related phenotypes. Methods: A total of 219 children, comprising 114 patients suffering from adenoid hypertrophy and 105 healthy patients without adenoid hypertrophy, were enrolled in this study. Genotypes of the Ugrp2 gene were determined by DNA sequencing. Results: We identified four single nucleotide polymorphisms (IVS1-189G&gt;A, IVS1-89T&gt;G, c.201delC, and IVS2-15G&gt;A) in the Ugrp2 gene. Our genotype analysis showed that the Ugrp2 (IVS1-89T&gt;G) TG and (c.201delC) CdelC genotypes and their minor alleles were associated with a considerable increase in the risk of adenoid hypertrophy compared with the controls (p = 0.012, p = 0.009, p = 0.013, and p = 0.037, respectively). Furthermore, Ugrp2 (GTdelCG, GTdelCA) haplotypes were significantly associated with adenoid hypertrophy (four single nucleotide polymorphisms ordered from 5′ to 3′; p = 0.0001). Polymorfism-Polymorfism interaction analysis indicated a strong interaction between combined genotypes of the Ugrp2 gene contributing to adenoid hypertrophy, as well as an increased chance of its diagnosis (p &lt; 0.0001). In addition, diplotypes carrying the mutant Ugrp2 (c.201delC) allele were strongly associated with an increased risk of adenoid hypertrophy with asthma and with allergies (p = 0.003 and p = 0.0007, respectively). Conclusion: Some single nucleotide polymorphisms and their combinations in the Ugrp2 gene are associated with an increased risk of developing adenoid hypertrophy. Therefore, we tried to underline the importance of genetic factors associated with adenoid hypertrophy and its related clinical phenotypes.
DOI: 10.6084/m9.figshare.7245041.v1
title: Estimation of Irrigation Water Pumping by Remote Sensing: Application of the SAMIR Model to Citrus under Mediterranean Climate Conditions

description: Abstract Agricultural intensification has led to overexploitation of water resources, in particular of the underground resource. Estimating groundwater exploitation remains a serious problem in arid and semi-arid countries such as Algeria. The objective of this work is to estimate volumes of pumped irrigation water using the SAtellite Monitoring of Irrigation (SAMIR) model from satellite imagery. Eleven (11) Landsat-TM images covering an area of 20 hectares of citrus orchards with a drip irrigation system were used. Irrigation volumes simulated by SAMIR were compared with volumes of pumped irrigation water. The latter were recorded digitally by specific programmers over a one-year observation period. The results shows a slight discrepancy between total simulated and observed volumes, 138,782 m3 and 135,688.5 m3, respectively. The index of agreement d and RMSE were 80.94 and 0.11, respectively, while the ratio of observed to simulated volumes varied from 0.76 to 1.27. 65% of the values compared differed by less than 10%. A significant correlation was found between the two methods. This confirms the feasibility of estimating pumping by remote sensing without calculating theoretical crop water requirements.
DOI: 10.7284/135006
title: Radiometer data collected during research cruise SKQ201903S using a Biospherical QSR-2150 instrument system onboard the platform RV Sikuliaq

description: Original (unprocessed) data collected during a Field_expedition