bluuebunny/crossref_metadata_2025 huggingface dataset:
Guided Surgery with 3D Printed Device: A Case Report
Authors: de Sales Michelle Carvalho , Florez Rafael Maluza , da Silva Guimaraes Julianny , da Silva Salomão Gustavo Vargas , Tedesco Tamara Kerber , Allegrini Sergio
Published: August 2020

Dental surgeons need in-depth knowledge of the bone tissue status and gingival morphology of atrophic maxillae. The aim of this study is to describe preoperative virtual planning of placement of 5 implants and to compare the plan with the actual surgical results. Three-dimensional (3D) planning of rehabilitation using software programs enables surgical guides to be specially designed for the implant site and manufactured using 3D printing. A patient with 5 teeth missing was selected for this study. The patient's maxillary region was scanned with cone-beam computed tomography (CBCT), and a cast model was produced. After virtual planning using ImplantViewer, 5 implants were placed using a printed surgical guide. Two weeks after the surgical procedure, the patient underwent another CBCT scan of the maxilla. Statistically significant differences were detected between the virtually planned positions and the actual positions of the implants, with a mean deviation of 0.36 mm in the cervical region and 0.7 mm in the apical region. The surgical technique used enables more accurate procedures compared with the conventional technique. Implants can be better positioned, with a high level of predictability, reducing both operating time and patient discomfort.
Establishing the Reliability of the Testimony of Minors in the Course of Forensic Psychological Examination
Authors: Andrushchenko Olga , Perekrestov Vadim
Published: August 2020

Introduction: the paper analyzes the problems of developing the criteria for establishing the reliability of the testimony of minors in the performance of forensic psychological examination. In search of these criteria, the authors discuss the existing theoretical and methodological approaches to the study of the credibility of the minor victims, the offenders and witnesses; analyze the legal aspects of forensic psychological examination of the testimony of persons under age, for their validity and reliability. Using the method of scientific knowledge, first of all comparative law, the official statistics of the investigative actions involving minors participating in the criminal proceedings in different status are analyzed. In addition, the paper uses the formal logical method. Results: the features of minors that determine the procedure for performing expert examination, including the specifics of the child’s personality and the level of its psychological and intellectual development, emotional state, are identified. Conclusions: the analyzed specific excerpts from the conclusions of the expert examinations allowed us to identify the criteria for the reliability of the testimony of minors and analyze the specifics of the experts’ approaches to this procedure.
Applying the Rules of Eviction in the Domestic Civil Law
Authors: Osadchenko Elvira
Published: August 2020

Introduction: the paper is devoted to the study of certain problematic issues of eviction, which gives rise to the responsibility of an unscrupulous seller in the event of a third party claiming a thing. For this purpose, the author considers the concept and features of a bona fide buyer, identified by the civil doctrine and used by the judicial practice. Using the methods of scientific knowledge, primarily the method of system and comparative analysis, the author identifies the constituent features of “eviction” by applying an essential-substantival approach to the study of the concept of a bona fide purchaser. Results: it is found that the Civil Code of the Russian Federation does not contain a list of criteria confirming the good faith of a person. An attempt to develop such a list is made in the paper through the semantic content of the concept of good faith. Conclusions: the author concluded that fixing the eviction signs and the criteria of good faith in the civil legislation of the Russian Federation will make it possible to protect the interests of contractors, reduce the risks and protect the parties from possible fraudulent actions and most fully ensure the performance of contractual obligations primarily on the part of the seller.
The Legal Definition of “Radioactive Waste” in EU Law and the Legislation of the Russian Federation
Authors: Lebedeva Yulia
Published: August 2020

Introduction: the adoption of the legal definition of “radioactive waste” in the Russian legislation and EU law was a significant event, as it reflected the importance of understanding the dangers to humans and the environment that humanity faced when dealing with radiation. The purpose of the study was to adopt one of the main legal concepts in atomic law – “radioactive waste”. Methods: the methodological framework for the research is a set of methods of scientific knowledge, among which the main ones are the general scientific philosophical methods of dialectical and historical materialism, the methods of comparative law, consistency, the methods of logical and structural and functional analysis. Results: the author’s well-founded position is based on the Russian legislation, EU law, and the opinions of the competent Soviet, Russian, and foreign scientific community on the issue of adopting a legal definition of “radioactive waste”. Based on the comparative legal analysis of the norms of the Federal laws of the Russian Federation and EU Directives, the differentiation of characteristic features of the legal definition of “radioactive waste” in EU law and the Russian legislation is carried out. Its features in Russian law are revealed. Conclusions: the study revealed the role of a unified legal approach to the legal definition of “radioactive waste” in order to explore the possibility of starting negotiations between the EU and Russia to develop an agreement in the field of scientific research of processing and new ways of disposal of radioactive waste.
Cybersecurity in the International Commercial Arbitration for Intellectual Property Disputes
Authors: Kupchina Ekaterina
Published: August 2020

Introduction: in the paper the author considers such a complex and multi-level issue as cybersecurity in the international commercial arbitration, including when considering disputes related to the intellectual property violations. The rapidly developing areas of information technology dictate the need for rapid and adequate measures in this area. Modern approaches based on the risk assessment in each arbitration by the participants of the arbitration, as a result of which the arbitrators have the right to take measures based on the circumstances of each individual case, have become a subject of discussion in the modern scientific community. Although the significance of cybersecurity risks may vary from one case to another, the threat of a cyber attack occurs in almost every international arbitration. The purpose of the research is achieved by solving a number of tasks: to identify the most frequent cases of violation of the rights of legal rights holders; to highlight the problem of confidentiality of arbitration disputes. The methodology is based on a theoretical approach to the study of the arbitration rules, as well as a number of national sources and other normative acts. Based on the analysis of the theoretical data obtained, the author provides examples of the most frequent cases of violation of the confidentiality of arbitration proceedings, as well as highlights some modern approaches to solving this problem. The results of the research can be used in determining the key goals and objectives of the procedural nature, improving the functioning of judicial and non-judicial organizations, law enforcement, research, and teaching activities, in particular, lectures and seminars on private international law, arbitration, copyright and patent law. Conclusions: the increased awareness of participants of the international commercial arbitration about the ways of information storage and information security promotes the development of the institution of arbitration proceedings, increases the degree of confidence of the parties in the procedures for dispute resolution.
The Techniques of Operational and Investigative Countering Actions Against Extremist Crimes by the Operational Units of the Internal Affairs Bodies
Authors: Kholopova Elena , Kopchenkova Yulia
Published: August 2020

Introduction: the counteraction to crimes of extremist orientation is carried out by the operational divisions of the Internal Affairs Bodies that need the techniques of counteraction to such crimes, which is confirmed by the results of the empirical research. The development of the basic techniques for operational and investigative counteraction to extremist crimes is determined by: improving the activities of the operational units, improving the quality of interaction between the police and other state bodies, religious and public associations on counteraction issues; a comprehensive approach to counteraction depending on the type of extremism and the operational situation in the region. The purpose of the study was to develop the basics of the operational investigative counteraction techniques using a situational approach. Methods: the methodological framework for this research is a set of methods of scientific knowledge, among which the main ones are the methods of systematicity, analysis and situational approach. Results: the paper considers the possibility of using the situational approach to the basics of the techniques for countering extremist crimes, substantiates the authors’ position on various characteristics of the structural and content elements of the techniques, the sources of recommendations, which are the operational-search characteristics of extremist crimes, operational-search practice and science. Conclusions: the identification and description of real typical situations of counteraction in which operational officers of the Internal Affairs bodies have to act is an important condition for the development of specific methodological recommendations. The following structural and substantive elements of the techniques for countering extremist crimes are highlighted (blocks of recommendations): recommendations on legal support of counteraction; recommendations on application of the operational and preventive measures; recommendations on interaction with the subjects of counteraction to extremism; recommendations on the operational situation in the region for extremist crimes; recommendations on the use of the information sources.
The Features of Extremism Prevention Among Young People
Authors: Muraev Pyotr , Yakovlev Dmitry , Shalimova Viktoriya
Published: August 2020

Introduction: the development of the market economy at the present stage of the Russian state has directly affected the criminological situation among young people. The extent of crime among this category of population is currently almost unchanged. The increase in the level of its public danger and the manifestation of new forms of criminal behavior of extremist orientation sharply exacerbate the criminal situation in the regions, including the Volgograd region. In this regard, the urgency of effective measures to prevent this negative phenomenon is increasing. The purpose of the paper: to characterize the current state of prevention of extremism among young people. Tasks: to assess the prevention of extremism among young people; to identify promising areas of systemic interaction between the main subjects of prevention of juvenile and youth extremism; to offer recommendations on the need to introduce organizational and socio-psychological directions of countering extremist influences on the young person into the academic and educational processes. Methods: the authors used the general scientific, systemic, and institutional research methods, as well as the methods of legal statistics, which allowed them to solve the tasks set by the research team. Results: the problems of extremism among young people are characterized, the promising directions of its prevention are identified, and the results of the fight against youth extremism in Volgograd are shown using the methods of legal statistics. Conclusions: in order to improve the efficiency of the prevention of youth extremism within the territory of Volgograd and the region the authors suggest in a coordinated manner with the participation of all actors of prevention to solve the employment problem of young people sentenced to penalties not involving incarceration; to systematically organize events in conjunction with the operational units, to identify and separate criminal gangs, involving the youth in their illegal activities; to regularly conduct preventive work with the parents and legal representatives of adolescents, especially those who are in a difficult life situation.
Philogenetic Analysis of ADAMTS-4 and ADAMTS-5 Structures
Authors: Korchagina Anastasia , Krylov Pavel
Published: August 2020

ADAMTS-4 and -5 are aggrecanases that are involved in the development of osteoarthrosis by breaking aggrecan at various binding sites, of which cleavage in the Glu373-Ala374 bond plays the most important role in pathogenesis. Therefore, studying them is an urgent task to this day. Now, the structural features of these enzymes have already been studied, however, the influence of evolutionary development on their functions and enzymatic activity is not quite clear. In the framework of this research in silico studies have been conducted. They consist in the construction of phylogenetic trees by the maximum likelihood method in MEGA X program, the establishment of changes in the structures that occurred during evolution, and their possible effect on enzymatic activity. In addition, the organism most suitable for experimental studies has been determined. In this research, to analyze evolutionary changes, we have studied the sequences of organisms from different families: Salmon, Guinea fowl, Frog, Python, Rabbit, Leopard, Gorilla, Man. The lengths of these sequences are approximately equal; when aligning, the structures do not differ much. When studying the trees constructed from these sequences, it has been found that their structure is quite different only at the beginning, in the area of the signal surface and prodomain, while the rest of the changes are insignificant. The authors have also carried out the analysis of phylogenetic trees to determine an organism that is most like the human structure and therefore most suitable for in vivo studies. The following structures have been investigated: Bull, Camel, Pig, Donkey, Rabbit, Rat, Mouse, and Man. The rabbit has the most similar structure and therefore is more suitable for experimental studies.
Structural and Functional Characteristics of ADAMTS-4 and ADAMTS-5: A Review
Authors: Korchagina Anastasia , Derevshchikova Lyudmila
Published: August 2020

ADAMTS-4 and -5 are aggrecanases that are involved in the development of osteoarthrosis, one of the most common diseases at the moment, due to which a large number of people suffer annually. By some estimates, 9.6% of men and 18% of women over the age of 60 have symptomatic osteoarthrosis. This review discusses the currently known data on the structural features and enzymatic activity of these enzymes. The structures of ADAMTS-4 and -5 are similar, they contain 7 domain sites: the signal section, the N-terminal prodomain, the catalytic domain, the disintegrin-like domain, the thrombospodin motif, the cysteine-rich domain, and the spacer domain. In addition to all these elements, ADAMTS-5 has an additional thrombospodin motif at the end. ADAMTS-4 and -5 cleaves aggrecan in 5 different binding sites. However, the Glu373-Ala374 site probably plays the most important role in the pathogenesis, since when this bond is broken, the whole aggrecan molecule loses its integrity, which leads to the destruction of cartilage and the development of the disease. In the course of the analysis of the information, the authors have found that the participation of ADAMTS-4 and -5 in the development of osteoarthritis varies greatly depending on the type of organism. The researchers have established that in mice ADAMTS-4 plays the largest role in the destruction of aggrecan, while in humans ADAMTS-5 or both aggrecanases influence the development of osteoarthritis. The revealed differences are not fully described; therefore, this review summarizes the already known results in this area, which will facilitate further research in this direction.
Ecobiological and Soil Features of the Biogeocenosis of Azerbaijan
Authors: Mammadova Aygun , Babayeva Shahla , Mirza-zade Rena
Published: August 2020

The article provides information about the uniqueness of the soil gene pool of Azerbaijan. A unique demonstration material on separate sections – soil science, agrochemistry, ecology, biology – has been collected in the Soil Museum, which illuminates the general historical annals of the developmen t of soil science. The expediency of creating regional soil museums is indicated. The article provides a list of 12 types of medicinal mosses identified in the bryoflora of Azerbaijan. A summary of the medicinal properties, location, and distribution is provided for each species. The authors establish that in the local bryoflora leaf-mosses of the following genera are the most represented: Sphagnum, Amblystegium, Bryum, Philonotis, Mnium, Polytrichum. The extracts obtained from mosses have been tested on five types of fungi such as: Fuzarium avenaceum, Fuzarium culmarum, Fuzarium oxysporium, Alternaria alternate, and Alternaria brassical. Soils, when used rationally in agriculture, “cultivate” and acquire new qualitative properties. Therefore, the development of soil protection measures in Azerbaijan is one of the important tasks facing the soil science of the republic. Detailed soil maps and cartograms of chemical, physical and agronomic properties of soils are the main scientific document in agricultural production. The comprehensive conservation and improvement of soils should be considered as an inextricable part of the zonal, regional, local farming systems and plans for the use of natural resources. Therefore, the protection of soils, their improvement and increasing their fertility is not only an important scientific task, but also the task of national knowledge. In this regard, the creation of Institute of Soil Science and Agrochemistry of the Soil Museum will precisely follow this goal. The museum has collected unique soil materials, some of which are rare, with limited distribution areas of endemic and reference types. The museum has created departments of outstanding soil scientists. Among them, academician G.A. Aliev, who has done a lot to protect the ecosystems of Azerbaijan, occupies a special place. The creation of the Red Book, the main mission of which is the protection of species diversity and the unique soil gene pool of Azerbaijan, also acquires great importance.
CHRONIC USE OF PROTON PUMP INHIBITORS AND THE QUANTITY OF G, D, AND ECL CELLS IN THE STOMACH
Authors: CAMILO Silvia Maria Perrone , ALMEIDA Élia Cláudia de Souza , SOUSA Jacqueline Batista , CAMILO Luana Perrone , ETCHEBEHERE Renata Margarida
Published: August 2020

ABSTRACT Background: Acid inhibition from chronic proton pump inhibitor use and a possible increase in gastrin can lead to changes in the regulation of hydrochloric acid production. However, it has not known whether such chronic use changes the presence of gastrin, delta, and enterochromaffin-like cells in the stomach or the relationship between gastrin and delta cells. Aim: To analyze the number of gastrin-producing gastrin cells, somatostatin-producing cells, and histamine-producing cells in patients who were chronic users of proton pump inhibitor, with or without related Helicobacter pylori infection. Methods: Biopsies from 105 patients, including 81 chronic proton pump inhibitor users (experimental group) and 24 controls, were processed immunohistochemically and subjected to counting of gastrin, delta, and enterochromaffin-like cells in high-magnification microscopic fields and in 10 glands. Results: Gastrin cell, delta cell, and enterochromaffin-like cells counts were similar across the groups and appeared to be unaffected by Helicobacter pylori infection. The ratio between gastrin cells and delta cells was higher in the chronic users of proton pump inhibitor group than in controls. Conclusion: Chronic users of proton pump inhibitor does not affect gastrin cell, delta cell, and enterochromaffin-like cell counts significantly, but may alter the ratio between gastrin cells and delta cells.
ANATOMICAL VARIATIONS OF THE SUPERIOR MESENTERIC ARTERY AND ITS CLINICAL AND SURGICAL IMPLICATIONS IN HUMANS
Authors: SILVA Natasha Gabriela Oliveira da , BARBOSA Ana Beatriz Marques , SILVA Nathalie de Almeida , ARAÚJO Diego Neves , ASSIS Thiago de Oliveira
Published: August 2020

ABSTRACT Introduction: Superior mesenteric artery (SMA) usually arises from the abdominal aorta, just below the celiac trunk and it supplies the midgut-derived embryonic structures. Anatomical variations in this vessel contribute to problems in the formation and/or absorption of this part of the intestine and its absence has been recognized as the cause of congenital duodenojejunal atresia. Objective: To analyze SMA anatomical variations in humans and the possible associated clinical and surgical implications. Methods: This is a systematic review of papers indexed in PubMed, SciELO, Springerlink, Science Direct, Lilacs, and Latindex databases. The search was performed by two independent reviewers between September and December 2018. Original studies involving SMA variations in humans were included. SMA presence/absence, level, place of origin and its terminal branches were considered. Results: At the end of the search, 18 studies were selected, characterized as for the sample, method to evaluate the anatomical structure and main results. The most common type of variation was when SMA originated from the right hepatic artery (6.13%). Two studies (11.11%) evidenced the inferior mesenteric artery originating from the SMA, whereas other two (11.11%) found the SMA sharing the same origin of the celiac trunk. Conclusion: SMA variations are not uncommon findings and their reports evidenced through the scientific literature demonstrate a great role for the development of important clinical conditions, making knowledge about this subject relevant to surgeons and professionals working in this area.
VERTICAL GASTRECTOMY VS. EXTENDED VERTICAL GASTRECTOMY: WHAT IS THE IMPACT ON GASTROESOPHAGEAL REFLUX DISEASE IN OBESE RATS?
Authors: VALADÃO José Aparecido , LEAL Plinio da Cunha , OLIVEIRA Eduardo José Silva Gomes de , TORRES Orlando Jorge Martins , PINTO Luis Eduardo Veras , MARCHI Danilo Dallago De , GAMA-FILHO Ozimo Pereira , SANTO Marco Aurelio , NASSIF Paulo Afonso Nunes
Published: August 2020

ABSTRACT Background: Extended vertical gastrectomy is a variation of the vertical gastrectomy technique requiring studies to elucidate safety in relation to gastroesophageal reflux. Aim: To analyze comparatively vertical gastrectomy (VG) and extended vertical gastrectomy (EVG) in rats with obesity induced by cafeteria diet in relation to the presence of reflux esophagitis, weight loss and macroscopic changes related to the procedures. Methods: Thirty Wistar rats were randomized into three groups, and after the obesity induction period by means of a 28-day cafeteria diet, underwent a simulated surgery (CG), VG and VGA. The animals were followed up for 28 days in the post-operative period, and after euthanasia, the reflux esophagitis evaluation was histopathologically performed. Weight and macroscopy were the other variables; weight was measured weekly and the macroscopic evaluation was performed during euthanasia. Results: All animals presented some degree of inflammation and the presence of at least one inflammation criterion; however, there was no statistically significant difference in the analysis among the groups. In relation to weight loss, the animals in CG showed a gradual increase during the whole experiment, evolving to super-obesity at the end of the study, while the ones with VG and EVG had weight regain after the first post-operative period; however, a less marked regain compared to CG, both for VG and EVG. Conclusion: There is no difference in relation to reflux esophagitis VG and EVG, as well as macroscopic alterations, and both techniques have the ability to control the evolution of weight during postoperative period in relation to CG.
Uma maquete da estrutura em treliças simples triangulares para o ensino de estática
Authors: Farias Rodrigo Braga de , Jesus V. L. B. de , Oliveira A. L. de
Published: August 2020

Resumo Este trabalho apresenta um recurso didático experimental em alternativa aos clássicos experimentos para verificação da lei de Hooke e daqueles que utilizam sensores eletrônicos para o estudo de forças atuantes em estruturas estáticas. Desenvolvemos uma maquete de uma estrutura típica em treliças triangulares simples para pontes, com molas acopladas em cada barra da estrutura. Com essa maquete, é possível explorar as potencialidades para a obtenção de resultados qualitativos e quantitativos sobre as forças que atuam nas barras da estrutura. As molas acopladas às barras da estrutura tem o propósito de nos permitir a visualização do comportamento de compressão ou tração e obter dados por medição direta das forças axiais atuantes em cada barra utilizando a lei de Hooke. Comparamos os valores experimentais das forças axiais de cada barra por medição direta com os resultados obtidos pelo método dos nós. Os resultados qualitativos e quantitativos dessa comparação indicam a viabilidade da utilização da maquete para fins didáticos.
Effect of competence health cultivation on the prevention and control of inadvertent perioperative hypothermia
Authors: Wang Ran , Ping Fu-Min , Liu Yue-Mei , He Jing-Lan , Du Shu-Fang , Shi Pei-Zhao , Chen Song , Shi Ji-Yue
Published: August 2020

SUMMARY OBJECTIVE To explore the feasibility of health competence cultivation on the prevention and control of Inadvertent Perioperative Hypothermia (IPH). METHODS Patients with expected spinal surgery were divided into group A and group B by the random number method. Group B followed routine IPH management, and health training measures for performance and ability were implemented in Group A. The scores of the health competence questionnaire, the temperature at different times, IPH complications, and hospitalization for the two groups were observed and compared. RESULTS The main evaluation indexes, such as the health competence questionnaire score, temperature fluctuations, and IPH complications, during the perioperative period in group A were significantly better than those in group B (p < 0.05). The indexes of anesthesia, total hospital expenses, and health service satisfaction in group A were also significantly better than those in group B, which shows the advantages of cultivating health capabilities in both doctors and patients. CONCLUSION Through health competence cultivation and feasible health management measures, the medical staff can improve the quality of IPH prevention and management.
Testando a hipótese do mercado central: uma análise dos preços do boi gordo na presença de quebras estruturais
Authors: Pancera Aline de Queiroz Assis Andreotti , Alves Alexandre Florindo
Published: August 2020

Resumo Com a intenção de compreender a dinâmica dos preços e as consequências de choques exógenos no mercado do boi gordo, a presente pesquisa buscou identificar se mudanças na estrutura da cadeia produtiva e no comportamento dos preços alteraram os centros formadores de preços do boi gordo no Brasil entre 2006 e 2017. Isso representa uma contribuição expressiva, uma vez que os estudos encontrados recentemente usavam formadores de preços de estudos defasados ou não consideravam os possíveis efeitos das quebras estruturais nas análises. Então, pretendeu-se testar a presença de quebras estruturais por meio do teste Chow e, conforme metodologia proposta por Asche et al. (2012), delimitar espacialmente o mercado do boi no Brasil pelo teste de cointegração de Johansen (1988, 1995) e identificar os centros formadores de preços pelo teste de exogeneidade fraca. O resultado do teste de quebra estrutural conjunta dividiu a série em três períodos distintos. No período I (início de 2006 a 2008), a região de São Paulo foi a que apresentou maior influência nos preços de outras regiões. Nos períodos II (2009 a 2013) e III (2014 a início de 2017), Mato Grosso do Sul passou a ser o estado com maior influência nos preços. Desse modo, comprovou-se que as modificações verificadas no agronegócio do boi e choques exógenos alteraram o mercado comum e o centro formador de preços no período analisado.
Performance of growing pigs subjected to lighting programs in climate-controlled environments
Authors: Barnabé Janice M. C. , Pandorfi Héliton , Gomes Nicoly F. , Holanda Marco A. C. , Holanda Mônica C. R. , Carvalho Filho José L. S.
Published: August 2020

ABSTRACT The objective of this research was to evaluate the thermal comfort, physiological responses and performance of pigs in the growth phase, subjected to supplemental lighting programs in air-conditioned environments, in semiarid region of Pernambuco state, Brazil. Twenty-seven pigs (3/4 Duroc, ¼ Pietrain) were subjected to pens with no climate control, pens with forced ventilation and pens with adiabatic evaporative cooling, associated with 12 h of natural light, 12 h of natural light + 4 h of artificial light and 12 h of natural light + 6 h of artificial light. The experimental design was completely randomized, in a 3 x 3 factorial arrangement with three repetitions. Meteorological responses, physiological responses and performance variables of the animals were recorded. The evaporative cooling system attenuated the action of the stressors and ensured adequate thermal conditions for the animals. Respiratory rate and rectal temperature indicated that evaporative cooling ensured the maintenance of homeothermy. Weight gain and feed conversion were positively influenced for the animals exposed to evaporative cooling, but without significant effect of lighting programs.
Condições de vida e promoção emancipatória da saúde no acesso à terra no sudeste paraense
Authors: Pinto Jax Nildo Aragão , Porto Marcelo Firpo Souza
Published: August 2020

Resumo O artigo visa discutir as condições de vida e a promoção emancipatória da saúde com base nas evidências descritivas dos relatórios da Comissão Pastoral da Terra, referências sobre a luta pelo acesso à terra no sudeste paraense, protagonizada por migrantes sem terra e articulada com o movimento camponês. Com isso, problematizou-se: em que medida o acesso à terra promoveu melhorias nas condições de vida dos migrantes sem terra no sudeste paraense? Trata-se de um estudo de natureza qualitativa, com base nos achados expressos em documentos e relatórios da Comissão Pastoral da Terra à luz das teorias pós-coloniais e da saúde coletiva. Apresenta uma discussão crítica sobre o modelo de desenvolvimento capitalista neoextrativista e o moderno sistema-mundo, fabricante de exclusão e subalternização, propondo alternativas epistemológicas e ontológicas, em articulação com as lutas sociais emancipatórias nos campos e nas cidades. Há evidências nos relatórios da Comissão Pastoral da Terra e nos dados oficiais do Instituto de Colonização e Reforma Agrária de que o acesso à terra na região analisada alterou as condições de vida e saúde de milhares de sem terra num contexto de elevados conflitos e violência no campo.
Well-being of unemployed people: relations with work values and time of unemployment
Authors: FIDELIS Ariana , MENDONÇA Helenides
Published: August 2020

Abstract This study aims to analyze the moderating power of time of unemployment in the relationship between work values and psychological well-being. The sample consisted of 265 unemployed individuals, 77 men and 188 women with an average age of 27 years (SD = 7.21), with complete secondary education in 48% of the total sample. The following data collection instruments were applied: Positive and Negative Affect Schedule, the Flourishing Scale and the Work Intrinsic Values Scale. The results of hierarchical regression analyses show that time of unemployment acts as a moderator in the relationship between the work values and the psychological well-being, so that the longer the unemployment duration the greater the individual’s psychological well-being. Consequently, the shorter the period of unemployment, more intense is the feeling of negative emotions. The result yield three important contributions: demonstration of the association between work values and psychological well-being of unemployed; identification that the period of unemployment is an important moderator to understand the unemployed well-being and review of the issue of unemployment in the social and political field in times of recession.
Cocoa shell substrate, indolebutyric acid doses and length of cuttings in the rooting of Fridericia chica
Authors: Barazetti Viviane Maria , Sodré George Andrade , Rodrigues Eliandro Malta , Gross Eduardo
Published: August 2020

ABSTRACT Fridericia chica (Bonpl.) L. G. Lohmann has medicinal properties and potential for commercial cultivation; however, the propagation characteristics of this species have been poorly evaluated. This study aimed to analyze the length of cuttings, indolebutyric acid (IBA) doses and substrates containing different proportions of cocoa shell in F. chica cuttings. Two experiments were carried out. In the first one, the treatments were basal cuttings of 10 cm and 20 cm in length and four IBA concentrations (0 mg L-1, 2,000 mg L-1, 4,000 mg L-1 and 6,000 mg L-1). In the second experiment, substrates obtained from five proportions of cocoa shell (CS) and expanded vermiculite (EV) compost were tested: 100 % CS; 100 % EV; 50 % CS + 50% EV; 30 % CS + 70 % EV; 70 % CS + 30 % EV. The rooting percentage, sprouting height and dry biomass production were evaluated. The production of F. chica seedlings can be performed by basal cuttings with 20 cm in length, which allow achieving a rooting rate of 91 %. The ideal IBA dose to obtain a maximum sprout length is 3,600 mg L-1. Mixtures composed of 50 % CS + 50 % EV and 30 % CS + 70 % EV were the best substrates for the production of F. chica seedlings.
Container volume and controlled-release fertilizer influence the seedling quality of Agonandra brasiliensis
Authors: Smiderle Oscar José , Montenegro Raiovane Araújo , Souza Aline das Graças , Chagas Edvan Alves , Dias Thiago Jardelino
Published: August 2020

ABSTRACT Agonandra brasiliensis is a tree from tropical forests, with a wide occurrence in the Brazilian Savannah region. Despite its potential as wood and for reforestarion, efficient protocols for its seedling production are still lacking. This study aimed to assess morphological characteristics for the seedling quality of A. brasiliensis, under nursery conditions, as a function of container volume and controlled-release fertilizer dose. The experiment was carried out in a 2 x 5 factorial scheme, testing two container volumes (1.8 L and 2.2 L) and five doses (0 g L-1, 1 g L-1, 2 g L-1, 4 g L-1 and 8 g L-1) of the encapsulated fertilizer Forth Cote™ (formulation NPK 15-09-12). The plots consisted of five homogeneous seedlings transplanted in polyethylene bags (15 cm x 35 cm) with washed medium sand substrate. The following characteristics were measured: shoot length; stem diameter; increases in length and diameter; total dry matter; shoot and root dry matters and the ratio between them. The Dickson Quality Index was also obtained. The seedling quality for morphological traits, such as shoot length, stem diameter and total dry matter, was especially favoured by treatments combining the controlled-release fertilizer at a dose around 5.0 g L-1 and container volume of 2.2 L.
Institutional analysis in scientific health production: an integrative literature review
Authors: Kasper Maristel , Fortuna Cinira Magali , Braghetto Gláucia Tamburú , Marcussi Thalita Caroline , Feliciano Adriana Barbieri , L’Abbate Solange
Published: August 2020

Abstract Objective: To analyze the use of the Institutional Analysis theoretical-methodological framework and of the central concept of institution in its three moments - instituted, instituting and institutionalizing in health studies. Method: Integrative review conducted in databases of PubMed/Medline, LILACS, Scopus, and CINAHL including original research articles published between 2012 and 2017. Results: Analysis of 26 publications. A plurality of study objects was found, and the most common were related to collective health, namely: mental health, violence, family-team relationship, family health, primary care, health of women, children and adolescents, oral health, continuing education, micropolitics of health work, health surveillance, HIV, law, pedagogical practices, school education and Autism. Nursing and psychology were the areas that most opted for Institutional Analysis. The polysemy of the institution concept was confirmed in the findings, indicating the richness of modes and uses of the concepts. Conclusion: Institutional Analysis presents tool-concepts to perform analyzes of health practices consistent with the Unified Health System.
Contributions of the Education through Work for Health Program to the preceptors of Primary Healthcare
Authors: Velôso Rafaela Braga Pereira , Fernandes Josicélia Dumêt , Silva Rosana Maria de Oliveira , Cordeiro Ana Lúcia Arcanjo Oliveira , Silva Gilberto Tadeu Reis da , Silva Elaine Andrade Leal
Published: August 2020

Abstract Objective: To analyze the contributions of the Education through Work for Health Program to the preceptors of Primary Healthcare working in family health units in Feira de Santana, Bahia. Method: A qualitative study conducted with preceptors in the months of March and April 2016, adopting preceptors who had worked in family health units linked to the Program for a minimum period of two years as inclusion criterion. Preceptors on vacation, maternity leave or on leave for different reasons were excluded. The collected data were interpreted based on the content analysis technique. Results: A total of 16 preceptors were interviewed. The Program’s contributions to the preceptors were as follows: expanding the perspective on health work, gaining experience in the teaching-learning process and the motivation to continue and search for new studies. Conclusion: The Program enabled preceptors to take a broader look at health work in the context of Primary Healthcare, to gain experience in training processes and motivation to develop new studies, in addition to contributing in a responsible way to the consolidation of the Unified Health System.
Predicting the mechanical properties of lightweight aggregate concrete using finite element method
Authors: Bonifácio Aldemon Lage , Mendes Julia Castro , Farage Michèle Cristina Resende , Barbosa Flávio de Souza , Beaucour Anne-Lise
Published: August 2020

Abstract The compressive strength (fc) and Young’s modulus (Ec) of concretes are properties of great importance in civil engineering problems. To this day, despite the relevance of the subject, concretes are still designed based on charts and empirical formulae. This scenario is even more imprecise for lightweight aggregate concretes (LWAC), which contain less design methodologies and case studies available in the literature. In this sense, the present work presents a numerical simulation for predicting the properties of LWAC’s specimens using the Finite Element Method. The material was considered as biphasic, comprising lightweight aggregates and the enveloping mortar. Each phase was modelled with its own compressive strength, tensile strength and Young’s modulus. The achieved numerical results for fc and Ec were compared with their experimental counterparts, obtained from the literature. In total, 48 concrete formulations were assessed. Numerical results showed fair agreement with the experimental data. In general, the Mean Absolute Percentage Error (MAPE) was lower for the shale aggregates for both Young's modulus (1.75% versus 4.21% of expanded clay) and compressive strength (4.19% versus 9.89% of expanded clay). No clear trend of error was identified in relation to the aggregate proportion or to the mortar types, in which the MAPE varied from 2.36% to 8.13%. In conclusion, the simplification to spherical aggregates has shown satisfactory results, as has the adoption of a 2D model, which require less computational resources. Results encourage further applications with more complex geometrical aspects to improve the mix design and safety of LWAC.
A gestão política da Covid-19 em Portugal: contributos analíticos para o debate internacional
Authors: Correia Tiago
Published: August 2020

À medida que a pandemia SARS-CoV-2 alcança a escala planetária multiplicam-se as respostas políticas de combate à doença Covid-19. Contudo, não só persiste a falta de evidência sobre os processos de tomada de decisão e os resultados obtidos – incluindo os colaterais –, como a análise de políticas não tem sido capaz de ultrapassar reportes descritivos que pouco acrescentam à compreensão teórica da gestão política desta doença. Partindo do caso português, este ensaio visa contribuir para corrigir essas lacunas, em concreto: contribuir para a melhoria das respostas políticas e para a consolidação do debate teórico a respeito da tomada de decisão política em contexto de crises sanitárias. A reflexão desenvolve-se em torno da necessidade de clarificar os objetivos de gestão dos contágios (se é erradicar, gerir, ignorar ou se há incapacidade na gestão das cadeias de transmissão), sobre a qualidade da monitorização e limites da comparação internacional (diferenças de metodologias e a importância dos rastreios) e sobre aspetos de como viver com a Covid-19 e a procura de normalidade (desafios no acesso à vacinação e relações com desigualdades sociais). A reflexão termina com a indicação de como o caso português ilustra as principais teorias de análise dos ciclos das políticas públicas.
Experimental study of the flexural behaviour of ultra-high-performance concrete beam with wet joint
Authors: Peng Keke , Yan Banfu
Published: August 2020

In order to improve the performance of wet joints in prefabricated ultra-high-performance concrete (UHPC) bridges, a comparative study was conducted to investigate the flexural behaviour of UHPC joint beams. Experimental tests were implemented on a complete beam and on five further specimens with, respectively, vertical joint, rhombus joint, vertical joint with strips, tied rhombus joint with strips, and welded rhombus joint with strips. The specimens’ failure modes, ultimate flexural capacities, strain distributions and load–deflection curves were investigated. The test results show that the flexural capacity of the joint beams is lower than that of the complete beam. Among the five specimens with wet joints, the welded rhombus joint with top and bottom strips had the greatest stiffness, the highest cracking resistance capacity, and the best flexural performance. From the best to the worst performing, the remainder of the wet joint specimens took the following order: the unwelded rhombus joint with strips, the vertical joint with strips, the rhombus joint and the vertical joint. In accordance with the test results and the related theoretical analysis, this paper proposes formulas to calculate the flexural capacity of the beam with UHPC joints.
New high-strength casting aluminum alloy based on the Al–Zn–Mg–Ca–Fe system without requirement for heat treatment
Authors: Shurkin P. K. , Belov N. A. , Musin A. F. , Aksenov A. A.
Published: August 2020

The paper substantiates the composition and prospects of using high strength Al–Zn–Mg–Ca–Fe casting aluminum alloy without heat treatment based on the study on the structure, technological and mechanical properties. Alloys of the base composition Al–5.5%Zn–1.5%Mg (wt.%) jointly and separately doped with 0.5–1.0 % Ca and 0.5 % Fe were obtained as the objects of research. Standard casting alloys according to GOST 1583-93: AK12M2, AMg6lch, AM4,5Kd were the objects of comparison. A hot tensile test using a cast test bar was conducted to check the tendency to form hot cracks due to hindered contraction. It was shown that separate alloying with calcium and iron does not contribute to the improvement of crack resistance and adversely affects mechanical properties. Combined alloying with 1 % Ca and 0.5 % Fe improves the hot tearing resistance to the level of the AMg6lch alloy properties. This effect is due to calcium-containing phases of eutectic origin formed and a favorable grain structure created that is free from columnar grains. Iron in the alloy structure is bound in compact Al10CaFe2 phase particles as a result of the non-equilibrium crystallization during permanent mold casting. The formation of this phase allowed to reduce the amount of zinc in the (Al, Zn)4Ca phase and mostly retain the (Al) solid solution composition as evidenced by similar hardness values of the Al–5.5%Zn–1.5%Mg base alloy and Al–5.5%Zn–1.5%Mg–1%Ca–0.5%Fe alloy, and the superiority of the values over the hardness of alloys separately alloyed with calcium and iron. Also the cast hardness of the promising alloy more than 20 HV higher than the cast hardness of commercial cast alloys. The new alloy in the as-cast condition exhibited competitive mechanical tensile properties: UTS ~ 310 MPa, YS ~ 210 MPa, El ~ 4 %.
Phase composition of deformable D16 and B95 aluminium alloys with the quantitative assessment of overburning of different stages of development
Authors: Vorob`ev R. A. , Sorokina S. A. , Evstifeeva V. V.
Published: August 2020

This paper covers new overburning monitoring methods for D16 and V95 aluminum alloys based on use of a method of an energydispersive X-ray spectral analysis (EDS analysis). It is known that lowered performance of aluminum-based materials is often connected with overburning in their structure. Because the structural changes caused by overburning (flash-off of eutectics and excess low-melting phases and the subsequent crystallization of melted-off microvolumes) are followed by developing porosity, have negative impact on physical and chemical, mechanical and processing properties. The ability to reveal overburning at early stages allows to reject the defective metal. Characteristics sensitive to an early overburning stage are offered based on EDS analysis. A degree of the induced overburning in a D16 sheet is identified. B95 alloy structural components determining the alloy tendency to overburning are revealed. It is found that the EDS analysis makes it possible to reveal changes in the chemical composition of the structural elements of D16 and V95 aluminum alloys and identify an overburning stage quantitatively based on oxygen content. Overburning development leads not only to the higher content of oxygen in the chemical composition of aluminum alloys, but also lowers the electrical conductivity of the material. The paper considers a correlation relationship between the D16 alloy electrical conductivity with overburning induced in it, and oxygen content. The applicability of this method is caused by the method simplicity and a possibility to quantify the defect development in the heat-strengthened deformable aluminum alloys after process heatings. Also this method can be used as an additional research method when metallographic analysis gives no definite answer at identification of early overburning stages.