Wilson Cano, intérprete da questão regional e urbana do Brasil

This article is a tribute by representatives from four generations of researchers, who were taught and supervised by Professor Wilson Cano (1937-2020). The text follows an academic trajectory that bequeathed a fundamental contribution towards the understanding of regional and urban issues in Brazil. The aim is to highlight the most distinctive aspects of his studies, based on a dynamic-historical and contradictory conception of capitalist development and the regional and urban repercussions that have resulted from such a process. Under the aegis of the historical-structural method, we identify, within his analyses, a rigorous investigation into the formation of regional complexes, of the movements of spatial concentration and deconcentration driven by industrialization, and of the determinations of the land issue for urbanization. He sought to situate the regional and urban debate within the context of the need to push forward a national development project, without which, the regions and cities of Brazil would become subjugated to the determinants of neoliberalism and to the loss of the nation’s sovereignty.Este artigo é uma homenagem de representantes de quatro gerações de pesquisadores formados e orientados pelo Professor Wilson Cano (1937-2020). O texto percorre uma trajetória acadêmica que legou contribuições fundamentais à compreensão da questão regional e urbana no Brasil. Procura ressaltar os aspectos mais distintivos dos seus estudos, com base em uma concepção histórico-dinâmica e contraditória do desenvolvimento capitalista e dos rebatimentos regionais e urbanos decorrentes de tal processo. Sob a égide do método histórico-estrutural, identifica-se, em suas análises, o exame rigoroso da formação dos complexos regionais, dos movimentos de concentração e desconcentração espacial impulsionados pela industrialização e das determinações da questão fundiária para a urbanização. Ele buscou situar o debate regional e urbano no Brasil no contexto da necessidade de avançar um projeto nacional de desenvolvimento, sem o qual teriam prosseguimento a subjugação das regiões e cidades brasileiras aos determinantes do neoliberalismo e a perda de soberania da nação

Evaluation of residual strength of polymeric yarns subjected to previous impact loads

The discovery of oil fields in deep and ultra-deep waters provided an opportunity to evaluate the use of  synthetic ropes, complementarily or alternatively to traditional steel-based mooring lines in offshore units, mainly because of the former’s lower specific weight. Considering the series of complex dynamic-mechanical mainly axial loads to which these structures may be subjected, originated from different sources, such as wind, water current, tide, etc., there may be cases when at least one of these lines may possibly face an abrupt, shock-like axial load of considerably larger magnitude. The goal of the present study is to evaluate the residual tensile strength of three different synthetic yarns  (polyester, and two grades of high modulus polyethylene) after exposure to such axial impact loads. It was observed that, for the tested materials, polyester is the one with the largest impact resistance to the conditions evaluated herein, mainly because of its comparatively greater energy absorption properties

Influence of igneous intrusions on coal flotation feasibility : the case of Moatize Mine, Mozambique

In this study, the influence on the properties of coal caused by proximity with an igneous intrusion in the Moatize mine was evaluated, together with the possibility of beneficiating such coal in the flotation circuit of the plant. For this purpose, extensive characterizations of samples collected at different distances from the intrusion were carried out, followed by a lab-scale replication and analysis of the flotation conditions used in the Moatize plant. The results showed that coal was negatively affected by the closeness to the dyke, with it being unfeasible to beneficiate coal at a distance of 2 m from the geological contact. However, for a 20 m distance, it proved possible to achieve yields higher than 77% with ash contents below 10%, depending on the reagent system used

Osteotomies of the coracoid process: an anatomical study

OBJECTIVE: Relate the main tendinous and ligamentous structures attached in the coracoid process, correlating it to several levels of osteotomy and describing the involved structures. METHODS: Thirty shoulders were dissected. The coracoid process with mainly inserted anatomic structures was dissected, and five levels of osteotomy (1.0; 1.5; 2.0; 2.5; 3.0 cm) were made from the apex of the process and the mainly involved structures were recorded. RESULTS: In osteotomies of 1.0 cm, in 100% of the cases only the conjoint tendon (CT). In osteotomies of 1.5 cm there were 63.33% of cases involved with the CT and the Pectoralis minor (PMi), in 20% of cases only the CT, and in 16.66% the CT, PMi, and the coracohumeral ligament (CUL). In osteotomies of 2.0 cm, in 80% of the shoulders, the osteotomies embraced the CT, PMi and the CUL, and in 20% only the CT and the PMi were involved. In the osteotomies of 2.5cm there was involvement of the CT, PMi and CUL in 100% of cases. In the osteotomies of 3.0cm, six cases (20%) have presented an injury on the trapezoid ligament, and in 100% of these osteotomies, the osteotomized distal fragment had embraced the CT, PMi, CUL. CONCLUSION: The knowledge of anatomic structures inserted and involved in the osteotomies cuts of the coracoid process is very importan to lead with osteotomies performed in the treatment techniques of the coracoid process. Osteotomies of 3.0 cm can injure the trapezoid ligament.OBJETIVO: Estudar as principais estruturas tendinosas e ligamentares inseridas no processo coracoide, correlacionando com diversos níveis de osteotomia e relatando as estruturas envolvidas no fragmento distai osteotomizado. MÉTODOS: Trinta ombros de 15 cadáveres (10 masculinos e cinco femininos) frescos foram dissecados. O processo coracoide com as principais estruturas anatômicas inseridas foram dissecados e cinco níveis de osteotomias (1,0; 1,5; 2,0; 2,5; 3,0cm) foram realizadas a partir do ápice e anotadas as principais estruturas inseridas no fragmento distal osteotomizado. RESULTADOS: Nas osteotomias de 1,0cm, em 100% dos casos houve envolvimento somente do tendão conjunto (TC). Nas osteotomias de 1,5cm, em 63,33% houve envolvimento do TC e peitoral menor (PMe), em 20% apenas do TC e em 16,66% do TC, PMi e ligamento coracoumeral (LCU). Nas osteotomias de 2,0cm, em 80% dos ombros, as osteotomias abrangeram o TC, PMe e o LCU e em 20% houve apenas envolvimento de TC e PMe. Nas osteotomias de 2,5cm, em 100% dos casos houve envolvimento do TC, PMe e LCU. Nas osteotomias de 3,0cm, em seis casos (20%) houve lesão do ligamento trapezoide e em 100% destas osteotomias, o fragmento distal osteotomizado abrangia o TC, PMe, LCU e em 90% envolvia também totalmente o ligamento coracoacromial. CONCLUSÃO: O conhecimento das estruturas anatômicas inseridas e envolvidas nos cortes das osteotomias do processo coracoide é de fundamental importância no manejo das osteotomias realizadas nas técnicas que utilizam o processo coracoide como enxerto ou referência anatômica. Nas osteotomias de 3,0cm há o risco de lesão do ligamento trapezoide.Universidade Federal de São Paulo (UNIFESP) Centro de Traumatologia do Esporte Grupo de Ombro e CotoveloUniversidade Federal de São Paulo (UNIFESP) Centro de Traumatologia do EsporteUNIFESP, Centro de Traumatologia do Esporte Grupo de Ombro e CotoveloUNIFESP, Centro de Traumatologia do EsporteSciEL

Optimization of Water Leaching of Chlorides from Aluminum Salt Slag

Peer ReviewedObjectius de Desenvolupament Sostenible::12 - Producció i Consum ResponsablesObjectius de Desenvolupament Sostenible::12 - Producció i Consum Responsables::12.4 - Per a 2020, aconseguir la gestió ecològicament racional dels productes químics i de tots els residus al llarg del seu cicle de vida, de conformitat amb els marcs internacionals convinguts, i reduir-ne de manera significativa l’alliberament a l’atmosfera, a l’aigua i al sòl a fi de minimitzar-ne els efectes adversos sobre la salut humana i el medi ambientObjectius de Desenvolupament Sostenible::12 - Producció i Consum Responsables::12.5 - Per a 2030, disminuir de manera substancial la generació de residus mitjançant polítiques de prevenció, reducció, reciclatge i reutilitzacióPostprint (published version

Optimization of water leaching of chlorides from aluminum salt slag

Aluminum recycling generates large amounts of hazardous wastes, known as salt slags, consisting mainly of oxides, metallic aluminum, and salt fluxes. Water leaching is a common technique used for salt removal, being a decisive operation due to water usage and the need to achieve sufficient salt recovery. In this study, water leaching tests under varied operational conditions (water type, slag particle size, solid content, and leaching time) were carried out in salt slag samples obtained from a Brazilian aluminum scrap melting company. Leaching efficiency was assessed by the % chlorine leached. The optimal leaching condition, defined as the one that resulted in the highest chloride removal from the slag together with appropriate operational conditions (larger viable slag size, lower leaching time, etc.), was identified for a slag size below 2.8 mm, 30 wt% of solids in pulp, and a leaching time of 90 min. The results showed that it was possible to recover more than 92% of the salts initially contained in the raw slag, resulting in a leached material with less than 2.5% salts. The recovered salt characteristics showed potential for recycling and could be re-mixed to the salt flux used for aluminum melting. The possibility of achieving higher efficiencies and lower water consumption during leaching was also discussed, as was a preliminary flowsheet for salt slag treatment

Diferenças de gênero no apoio social e atividade física de lazer

OBJECTIVE To identify gender differences in social support dimensions’ effect on adults’ leisure-time physical activity maintenance, type, and time. METHODS Longitudinal study of 1,278 non-faculty public employees at a university in Rio de Janeiro, RJ, Southeastern Brazil. Physical activity was evaluated using a dichotomous question with a two-week reference period, and further questions concerning leisure-time physical activity type (individual or group) and time spent on the activity. Social support was measured with the Medical Outcomes Study Social Support Scale. For the analysis, logistic regression models were adjusted separately by gender. RESULTS A multinomial logistic regression showed an association between material support and individual activities among women (OR = 2.76; 95%CI 1.2;6.5). Affective support was associated with time spent on leisure-time physical activity only among men (OR = 1.80; 95%CI 1.1;3.2). CONCLUSIONS All dimensions of social support that were examined influenced either the type of, or the time spent on, leisure-time physical activity. In some social support dimensions, the associations detected varied by gender. Future studies should attempt to elucidate the mechanisms involved in these gender differences.OBJETIVO Identificar diferenças de gênero no efeito de dimensões de apoio social na manutenção, tipo e tempo da atividade física de lazer em adultos. MÉTODOS Estudo longitudinal com 1.278 funcionários públicos não docentes de uma universidade do Rio de Janeiro. A atividade física foi avaliada utilizando questão dicotômica, com um período de referência de duas semanas, e outras questões relativas ao tipo de atividade (individual ou grupo) e ao tempo gasto na atividade. O apoio social foi medido pelo Medical Outcomes Study Social Support Scale. Para a análise, os modelos de regressão logística foram ajustados separadamente por gênero. RESULTADOS A regressão logística multinomial mostrou associação entre o apoio material e as atividades individuais (OR = 2,76, IC95% 1,2;6,5) entre as mulheres. O apoio afetivo foi associado com o tempo gasto em atividades físicas de lazer (OR = 1,80, IC95% 1,1;3,2) apenas entre os homens. CONCLUSÕES Todas as dimensões de apoio social examinadas influenciaram o tipo ou o tempo gasto em atividades físicas de lazer. Em algumas dimensões de apoio social, as associações variaram segundo gênero. Estudos futuros devem elucidar os mecanismos envolvidos nessas diferenças entre os gêneros

Application of Annona glabra L. (Annonaceae) in the area of health, chemical composition and biological activity

This review article aimed to present the knowledge accumulated so far about the species Annona glabra L. (Annonaceae), its applicability in the health area, chemical composition and biological activity. The selection of articles took place through different bibliographic search platforms, such as Annual Reviews, Europe PMC, Google Scholar, Indian Journals, PubMed, ResearchGate, SAGE journals, Scielo, ScienceDirect, Scientific Reports, Semantic Scholar, Wiley Online Library and J- STAGE The scientific literature presents studies on the species A. glabra present promising data on anticarcinogenic activities, inhibition of carcinogenic cells, chronic lymphocytic leukemia and mitochondrial complex I, antioxidants, antirheumatic, emollient, significant inhibition of HIV replication in H9 lymphocytes and inhibition of reverse transcriptase, antimicrobial, antifungal, insecticidal, vermicide and antiparasitic. Phytochemical studies derived from extractions of different parts of the plant revealed the presence of flavonoids, terpenoids, glycosides, steroids, saponins, tannins, anthraquinones and acidic compounds. The species has properties related to traditional medicine, being used in the Chinese, Japanese and Mexican health systems. The understanding of the species and its compounds with anticarcinogenic activity is still poorly understood and unfortunately no study has reached the clinical testing stage. This study sought to be a source of stimulus for further research addressing the biological activity, in vitro and in vivo studies, of the different floral parts of A. glabra

Mineralização de compostos de dejetos líquidos de suínos tratados com xisto retortado e dicianodiamida em dois solos contrastantes

The objective of this work was to evaluate carbon and nitrogen mineralization in the soil after the application of composts produced in an automated composting plant, using pig slurry (PS) with and without the addition of retorted oil shale (ROS) and dicyandiamide (DCD) during composting. Laboratory studies were carried out for 180 days on two soils with contrasting characteristics: sandy-loam Typic Paludalf and clay Rhodic Hapludox, which were managed for more than 10 years under a no-tillage system. The composts were thoroughly mixed with the soils. The mineralization of the C and N from the compost was evaluated by measuring continuously CO2 emissions and periodically mineral N (NH4+ + NO3-) content in the soils, respectively. The mineralization of the C from the compost without ROS and DCD was higher in the sandy-loam soil (20.5%) than in the clay soil (13.9%). Similarly, 19.4% of the total N from the compost was mineralized in the sandy-loam soil and 10.9% in the clay soil. The presence of ROS in the compost reduced C mineralization by 54%, compared with the treatment without additives, in the sandy-loam soil and caused net N immobilization in both soils during incubation. The addition of DCD during PS composting did not affect the mineralization of the C and N from the compost in both soils. The addition of ROS during the composting of PS favors the retention of the C from the compost in the soil, especially in the sandy-loam one, but results in a net N immobilization.O objetivo deste trabalho foi avaliar a mineralização de carbono e nitrogênio no solo após a aplicação de compostos produzidos numa planta de compostagem automatizada, tendo-se utilizado dejetos líquidos de suínos (DLS), com e sem a adição de xisto retortado (XR) e dicianodiamida (DCD) durante a compostagem. Estudos laboratoriais foram conduzidos durante 180 dias, em dois solos com características contrastantes: Argissolo franco-arenoso e Latossolo argiloso, que foram manejados por mais de 10 anos em sistema plantio direto. Os compostos foram completamente misturados com os solos. A mineralização do C e do N do composto foi avaliada pela medição contínua do CO2 emitido e periódica do conteúdo de N mineral (NH4+ + NO3-) dos solos, respectivamente. A mineralização do C do composto sem a adição de XR e DCD foi maior no solo franco-arenoso (20.5%) do que no argiloso (13.9%). Similarmente, 19.4% do N total do composto foi mineralizado no solo franco-arenoso e 10.9% no solo argiloso. A presença do XR no composto reduziu a mineralização do C em 54%, comparado ao tratamento sem aditivos, no solo franco-arenoso e causou imobilização líquida de N em ambos os solos durante a incubação. A adição de DCD durante a compostagem dos DLS não afetou a mineralização do C e do N do composto em ambos os solos. A adição de XR durante a compostagem dos DLS favorece a retenção do C do composto no solo, principalmente no franco-arenoso, porém resulta em imobilização líquida de N