cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.11609214.v1
title: Increased Knowledge among Psychiatric Medical Interns does not Reduce the Stigmatization of Mental Disorders

description: ABSTRACT Introduction Considering the high prevalence of mental illnesses, it is essential for any physician to offer proper treatment and attention to people with these disorders. Nevertheless, the usual stigma and lack of knowledge regarding the management of mental disorders on the part of physicians can represent a significant barrier to treatment and inefficiency faced by patients in the health care system. Objective This study aimed to measure the gain of psychiatric knowledge and the reduction in the stigmatization of people with schizophrenia by medical students after exposure to the compulsory internship program at a public medical school in the Federal District. Methods Quasi-experimental study to evaluate the impact of the training program during medical internship in the final year of undergraduate medical training. The sample was 35 final-year medical students. Questionnaires were applied to measure the degree and type of stigma in relation to schizophrenia and self-perception regarding the drug management and treatment of psychiatric diseases. A three-point Likert scale was used to measure the results. The questionnaires were applied immediately before and after exposure to the four-week training program. The medical values of self-perception and stigma were compared between two moments using the Student’s t test. Results: There was no statistically significant difference found between stigmatization before and after the intervention (total stereotype, p = 0.230; perceived prejudice, p = 0.172; social distance, p = 0.209; civil rights, p = 0.837). Regarding self-perception of knowledge, the number of items reaching total confidence and the mean values after the training were significantly improved (p = 0.007 and p &lt; 0.0001, respectively). There was no correlation with sociodemographic characteristics. Conclusion Despite the knowledge gain, medical students failed to show any improvement in the degree of stigma held after immersion in a 4-week practical psychiatric training program. The short duration of the intervention might have meant that the students’ contact with patients was insufficient to reduce stigma. More studies are needed with larger groups and experimental designs.
DOI: 10.6084/m9.figshare.11609208
title: Towards Qualification of Friction Stir Welding to AA5083-O and AA5052-O Aluminum Alloys

description: Friction Stir Welding (FSW) is an excellent alternative for joining dissimilar and similar materials in comparison to conventional welding processes. In this sense, this work aims at qualifying FSW to similar AA5083-O and AA5052-O aluminum alloys, with 6.35 mm thickness, in a CNC machining center. Therefore, four welding experiments were undertaken. At first, two types of plate surface finish were considered before joining. Afterward, two tool probe geometries, and changes in the base material position were evaluated. Hence, the welds were mainly analyzed by metallography, tensile testing, and bending tests. Results showed that the machining step to oxides removal and plates alignment is beneficial for the weld processing and the factor that has significant influence to achieve suitable joints is the tool probe geometry. Finally, by obtaining an average ultimate tensile strength (UTS) of around 191 MPa, enhanced microhardness, and bent angle of approximately 150°, the best joint was chosen.
DOI: 10.6084/m9.figshare.11609211
title: Narrative review of the epidemiology, diagnosis and pathophysiology of pelvic organ prolapse

description: ABSTRACT The exact prevalence of pelvic organ prolapse is difficult to establish. The anatomical changes do not always consist with the severity or the symptoms associated with prolapse. There are many risk factors associated with pelvic organ prolapse and this review aims to identify the epidemiology and pathophysiology while looking at the known risk factors for pelvic organ prolapse. PubMed search involved a number of terms including: epidemiology, risk factors, reoccurrence indicators, management and evaluation. Several risk factors have been associated with pelvic organ prolapse, all contribute to weakening of the pelvic floor connective tissue/collagen, allowing the pelvic organs to prolapse through the vaginal walls. Among the risk factors are genetic background, childbirth and mode of delivery, previous hysterectomy, menopausal state and the ratio between Estrogen receptors. The “Integral theory” of Petros and the “Levels of Support” model of Delancey enable us to locate the defect, diagnose and treat pelvic organ prolapse. The currently available demographic data is not reliable enough to properly estimate the true extent of pelvic organ prolapse in the population. However, standardization of the diagnosis and treatment may significantly improve our ability to estimate the true incidence and prevalence of this condition in the coming years.
DOI: 10.6084/m9.figshare.11609205
title: Composition in fatty acids of mature milk of nursing mothers

description: Abstract Objectives: to determine the fatty acid composition of mature milk of nursing mothers and its distribution according to some maternal variables. Methods: this is a cross-sectional observational epidemiological study based on the eva-luation of the fatty acid profile of mature human milk. Samples of mature breast milk were taken from 106 nursing mothers, by manual milking and who were after the 5th postpartum week. The milk fat extraction was carried out by using the Bligh and Dyer method and methy-lated with 0.25 mol/L sodium methoxide in methanol diethyl ether. The fatty acid of the milk profile was determined by a Gas Chromatograph equipped with a flame ionization detector. Results: among the saturated fatty acids, the highest values were observed for palmitic (C16:0), stearic (C18:0), myristic (C14:0) and lauric (C12:0) fatty acids, respectively. Among the monounsaturated fatty acids, there was a higher contribution of oleic (C18:1) and palmi-toleic (C16:1) fatty acids, respectively. The total essential fatty acids (linoleic and α-linolenic) was 14.94%. Conclusions: a low content of essential fatty acids in the breast milk of the nursing mothers was observed in the present study, which are important for infant growth and deve-lopment. We suggest the need to implement nutrition education strategies aimed for pregnant women and nursing mothers who should be advised to eat healthier foods.
DOI: 10.6084/m9.figshare.11609208.v1
title: Towards Qualification of Friction Stir Welding to AA5083-O and AA5052-O Aluminum Alloys

description: Friction Stir Welding (FSW) is an excellent alternative for joining dissimilar and similar materials in comparison to conventional welding processes. In this sense, this work aims at qualifying FSW to similar AA5083-O and AA5052-O aluminum alloys, with 6.35 mm thickness, in a CNC machining center. Therefore, four welding experiments were undertaken. At first, two types of plate surface finish were considered before joining. Afterward, two tool probe geometries, and changes in the base material position were evaluated. Hence, the welds were mainly analyzed by metallography, tensile testing, and bending tests. Results showed that the machining step to oxides removal and plates alignment is beneficial for the weld processing and the factor that has significant influence to achieve suitable joints is the tool probe geometry. Finally, by obtaining an average ultimate tensile strength (UTS) of around 191 MPa, enhanced microhardness, and bent angle of approximately 150°, the best joint was chosen.
DOI: 10.6084/m9.figshare.11609211.v1
title: Narrative review of the epidemiology, diagnosis and pathophysiology of pelvic organ prolapse

description: ABSTRACT The exact prevalence of pelvic organ prolapse is difficult to establish. The anatomical changes do not always consist with the severity or the symptoms associated with prolapse. There are many risk factors associated with pelvic organ prolapse and this review aims to identify the epidemiology and pathophysiology while looking at the known risk factors for pelvic organ prolapse. PubMed search involved a number of terms including: epidemiology, risk factors, reoccurrence indicators, management and evaluation. Several risk factors have been associated with pelvic organ prolapse, all contribute to weakening of the pelvic floor connective tissue/collagen, allowing the pelvic organs to prolapse through the vaginal walls. Among the risk factors are genetic background, childbirth and mode of delivery, previous hysterectomy, menopausal state and the ratio between Estrogen receptors. The “Integral theory” of Petros and the “Levels of Support” model of Delancey enable us to locate the defect, diagnose and treat pelvic organ prolapse. The currently available demographic data is not reliable enough to properly estimate the true extent of pelvic organ prolapse in the population. However, standardization of the diagnosis and treatment may significantly improve our ability to estimate the true incidence and prevalence of this condition in the coming years.
DOI: 10.6084/m9.figshare.11609202
title: Evaluation of Empathy in Medical Residents of Alzira Velano University Hospital in Alfenas, Minas Gerais

description: ABSTRACT INTRODUCTION Much is discussed about the importance of empathy in the patient-physician relationship. Few studies have evaluated this ability in resident physicians (RPs). OBJECTIVE To evaluate the empathy of the resident physicians of the University Hospital Alzira Velano (HUAV), through the Jefferson Scale of Empathy (JSE), which provides 4 types of scores: General Empathy (GE); Perspective Taking (PT); Compassionate Care (CC) and Standing in Patient’s Shoes (SP). METHODS The JSE and a sociodemographic questionnaire were applied to 36 RPs of the HUAV at the beginning of the second semester of 2016, after they signed the informed consent form. RESULTS Statistical analysis by the Mann-Whitney test showed that empathy scores were associated with variables: gender, area of performance (clinical or surgical) and period of residence in progress. For the variable gender, the following findings were observed: 1) Female RPs of the 1st year had higher GE scores than the RPs in the ≥ 2nd year (p = 0.01) and (0.03), respectively; 2) female RP’s of 1st year had higher TP scores than RPs of ≥ 2nd year (p = 0.03). Regarding the area of performance, 1) the GE scores of the 1st year RPs were higher when compared to the RPs in the ≥ 2nd year, both for the clinical (p = 0.03) and for the surgical area (p = 0.02); 2) RPs of the surgical area had higher PT scores in the 1st year compared to RPs in the ≥ 2nd year (p = 0.01). No association was observed between the studied factors and CC and SP scores. CONCLUSION The data show that the empathy scores of the RPs of the final years are lower in relation to the RPs of the 1 st year, a fact also verified for female RPs. Our data are in agreement with the observations of the literature and show the importance of the development of instructional strategies for the teaching of empathy among resident physicians.
DOI: 10.6084/m9.figshare.11609202.v1
title: Evaluation of Empathy in Medical Residents of Alzira Velano University Hospital in Alfenas, Minas Gerais

description: ABSTRACT INTRODUCTION Much is discussed about the importance of empathy in the patient-physician relationship. Few studies have evaluated this ability in resident physicians (RPs). OBJECTIVE To evaluate the empathy of the resident physicians of the University Hospital Alzira Velano (HUAV), through the Jefferson Scale of Empathy (JSE), which provides 4 types of scores: General Empathy (GE); Perspective Taking (PT); Compassionate Care (CC) and Standing in Patient’s Shoes (SP). METHODS The JSE and a sociodemographic questionnaire were applied to 36 RPs of the HUAV at the beginning of the second semester of 2016, after they signed the informed consent form. RESULTS Statistical analysis by the Mann-Whitney test showed that empathy scores were associated with variables: gender, area of performance (clinical or surgical) and period of residence in progress. For the variable gender, the following findings were observed: 1) Female RPs of the 1st year had higher GE scores than the RPs in the ≥ 2nd year (p = 0.01) and (0.03), respectively; 2) female RP’s of 1st year had higher TP scores than RPs of ≥ 2nd year (p = 0.03). Regarding the area of performance, 1) the GE scores of the 1st year RPs were higher when compared to the RPs in the ≥ 2nd year, both for the clinical (p = 0.03) and for the surgical area (p = 0.02); 2) RPs of the surgical area had higher PT scores in the 1st year compared to RPs in the ≥ 2nd year (p = 0.01). No association was observed between the studied factors and CC and SP scores. CONCLUSION The data show that the empathy scores of the RPs of the final years are lower in relation to the RPs of the 1 st year, a fact also verified for female RPs. Our data are in agreement with the observations of the literature and show the importance of the development of instructional strategies for the teaching of empathy among resident physicians.
DOI: 10.6084/m9.figshare.11609205.v1
title: Composition in fatty acids of mature milk of nursing mothers

description: Abstract Objectives: to determine the fatty acid composition of mature milk of nursing mothers and its distribution according to some maternal variables. Methods: this is a cross-sectional observational epidemiological study based on the eva-luation of the fatty acid profile of mature human milk. Samples of mature breast milk were taken from 106 nursing mothers, by manual milking and who were after the 5th postpartum week. The milk fat extraction was carried out by using the Bligh and Dyer method and methy-lated with 0.25 mol/L sodium methoxide in methanol diethyl ether. The fatty acid of the milk profile was determined by a Gas Chromatograph equipped with a flame ionization detector. Results: among the saturated fatty acids, the highest values were observed for palmitic (C16:0), stearic (C18:0), myristic (C14:0) and lauric (C12:0) fatty acids, respectively. Among the monounsaturated fatty acids, there was a higher contribution of oleic (C18:1) and palmi-toleic (C16:1) fatty acids, respectively. The total essential fatty acids (linoleic and α-linolenic) was 14.94%. Conclusions: a low content of essential fatty acids in the breast milk of the nursing mothers was observed in the present study, which are important for infant growth and deve-lopment. We suggest the need to implement nutrition education strategies aimed for pregnant women and nursing mothers who should be advised to eat healthier foods.
DOI: 10.6084/m9.figshare.11609190
title: Glass Formation of Null-Matrix Cu-Hf-(Zr, Ti) Alloys

description: An approach following the null-matrix, Ti/Zr ratio of 2.08, for neutron diffraction was used to calculate the glass formation in Cu-Ti-(Hf,Zr) alloys. The Cu55Zr14.6Ti30.4, Cu61.48Hf18.52Zr6.48Ti13.52, Cu58.1Hf16.9Zr8.1Ti16.9 and Cu52.46Hf14.2Zr10.8Ti22.54 compositions (at. %), were calculated and prepared by argon arc melting. Copper die suction casting was employed to produce conical shaped samples with diameters decreasing from 8 mm to 1 mm. X-ray diffraction and Neutron Diffraction were used to characterize the alloys with the aim of obtaining the critical glassy diameter, dc, of the alloys. The results showed the composition with the biggest dc was the Cu61.48Hf18.52Zr6.48Ti13.52 alloy, with dc = 6 mm. Thermal parameters were obtained by differential scanning calorimetry and the maximum values for glass transition temperature, Tg, (747 K), crystallization temperature, Tx, (772 K), solidus temperature, Tm, (1152 K) and liquidus temperature, Tl, (1230 K) corresponded to the Cu61.48Hf18.52Zr6.48Ti13.52 composition. The results also showed that the parameters obtained from thermal analysis did not correlate with the GFA obtained. However, a good correlation of GFA and dc was found by means of the topological model, where the highest % packing efficiency (53.57 %) was found for the Cu61.48Hf18.52Zr6.48Ti13.52 alloy, which also showed the highest dc value with 6 mm.
DOI: 10.6084/m9.figshare.11609190.v1
title: Glass Formation of Null-Matrix Cu-Hf-(Zr, Ti) Alloys

description: An approach following the null-matrix, Ti/Zr ratio of 2.08, for neutron diffraction was used to calculate the glass formation in Cu-Ti-(Hf,Zr) alloys. The Cu55Zr14.6Ti30.4, Cu61.48Hf18.52Zr6.48Ti13.52, Cu58.1Hf16.9Zr8.1Ti16.9 and Cu52.46Hf14.2Zr10.8Ti22.54 compositions (at. %), were calculated and prepared by argon arc melting. Copper die suction casting was employed to produce conical shaped samples with diameters decreasing from 8 mm to 1 mm. X-ray diffraction and Neutron Diffraction were used to characterize the alloys with the aim of obtaining the critical glassy diameter, dc, of the alloys. The results showed the composition with the biggest dc was the Cu61.48Hf18.52Zr6.48Ti13.52 alloy, with dc = 6 mm. Thermal parameters were obtained by differential scanning calorimetry and the maximum values for glass transition temperature, Tg, (747 K), crystallization temperature, Tx, (772 K), solidus temperature, Tm, (1152 K) and liquidus temperature, Tl, (1230 K) corresponded to the Cu61.48Hf18.52Zr6.48Ti13.52 composition. The results also showed that the parameters obtained from thermal analysis did not correlate with the GFA obtained. However, a good correlation of GFA and dc was found by means of the topological model, where the highest % packing efficiency (53.57 %) was found for the Cu61.48Hf18.52Zr6.48Ti13.52 alloy, which also showed the highest dc value with 6 mm.
DOI: 10.6084/m9.figshare.11609184
title: Fractal dimensionality and scale invariance in an AC electric circuits and transmission lines

description: Abstract Fractal geometry is fascinating due to its ability to describe the complex geometries naturally occurring in real world. The fractal or Hausdorff dimension d is used to describe the laws of scale invariance, which are exemplified by functions satisfying a mathematical law of the form f ( s x ) = s d f ( x ), being s the scale factor. Closely related is the problem of determining the fixed point of physical systems. Mathematically, the fixed point corresponds to a point in the domain of a function which is mapped to itself. In dynamical systems, it typically corresponds to the value to which the response of the system converge and stabilize. The present contribution aims to present the general concepts of scale invariance and fixed or critical points, employing such aspects to the problem of complex impedance association, both in series and in ladder configuration. The complex impedance, and transfer function of transmission lines and flow graphs related to the convergence the iterative equations to a fixed points are discussed in more details.
DOI: 10.6084/m9.figshare.11609178
title: Aqueous Agro-Industrial Waste as Corrosion Inhibitor for Stainless Steel AISI 304 in Acidic Media

description: The use of corrosion inhibitors is one of the most common methods to combat acid corrosion. The current studies aim to apply natural products as corrosion inhibitors, once the most used compounds are mostly toxic to the environment and to humans. The present paper purposes the application of an aqueous extract of agro-industrial waste (AEAW) to inhibit the corrosion of stainless steel AISI 304 in sulfuric acid. Gravimetric and electrochemical experiments were performed. The gravimetric experiments revealed that the extract acts as an inhibitor for stainless steel, showing inhibitory efficiency up to 81.6%. The electrochemical tests show that the AEAW makes the steel surface more noble. The extract acts by adsorption in the metallic surface, following a Temkin isotherm. The results indicate that the AEAW is a promising substitute of conventional organic compounds as a corrosion inhibitor to AISI 304 stainless steel in sulfuric acid.
DOI: 10.6084/m9.figshare.11609178.v1
title: Aqueous Agro-Industrial Waste as Corrosion Inhibitor for Stainless Steel AISI 304 in Acidic Media

description: The use of corrosion inhibitors is one of the most common methods to combat acid corrosion. The current studies aim to apply natural products as corrosion inhibitors, once the most used compounds are mostly toxic to the environment and to humans. The present paper purposes the application of an aqueous extract of agro-industrial waste (AEAW) to inhibit the corrosion of stainless steel AISI 304 in sulfuric acid. Gravimetric and electrochemical experiments were performed. The gravimetric experiments revealed that the extract acts as an inhibitor for stainless steel, showing inhibitory efficiency up to 81.6%. The electrochemical tests show that the AEAW makes the steel surface more noble. The extract acts by adsorption in the metallic surface, following a Temkin isotherm. The results indicate that the AEAW is a promising substitute of conventional organic compounds as a corrosion inhibitor to AISI 304 stainless steel in sulfuric acid.
DOI: 10.6084/m9.figshare.11609175
title: Post-elastic Deformation Characteristics of Hybrid Fibre Reinforced Concrete Composites

description: Abstract The present study was focused on evaluating the strength and failure properties of hybrid micro-fibre concretes containing micro brass and steel fibre additions. Experimental tests were conducted on different hybrid fibre concretes containing aligned fibres in the direction of beam axis and the relative mechanical performance was compared to randomly distributed fibre additions in concrete. Statistical analysis on the test results were used to compare the distinctive performance of fibre combinations at different dosage levels. The effect of binder to aggregate ratio and the varying proportions of fibre combinations on the concrete properties were assessed in terms of flexural strength, fracture toughness and ductility. The statistical analysis of the experimental results indicated the dual action of hybrid fibre combinations in improving the composite properties and the crack arresting mechanism of fibres at varying stages of loading as observed from the load-CMOD curves. Among the various concretes tested, the hybrid fibre concretes containing steel-brass fibres dosages at 1.0% and 0.03%Vf performed consistently in overall mechanical properties.
DOI: 10.6084/m9.figshare.11609175.v1
title: Post-elastic Deformation Characteristics of Hybrid Fibre Reinforced Concrete Composites

description: Abstract The present study was focused on evaluating the strength and failure properties of hybrid micro-fibre concretes containing micro brass and steel fibre additions. Experimental tests were conducted on different hybrid fibre concretes containing aligned fibres in the direction of beam axis and the relative mechanical performance was compared to randomly distributed fibre additions in concrete. Statistical analysis on the test results were used to compare the distinctive performance of fibre combinations at different dosage levels. The effect of binder to aggregate ratio and the varying proportions of fibre combinations on the concrete properties were assessed in terms of flexural strength, fracture toughness and ductility. The statistical analysis of the experimental results indicated the dual action of hybrid fibre combinations in improving the composite properties and the crack arresting mechanism of fibres at varying stages of loading as observed from the load-CMOD curves. Among the various concretes tested, the hybrid fibre concretes containing steel-brass fibres dosages at 1.0% and 0.03%Vf performed consistently in overall mechanical properties.