State ofMinas Gerais Research Articles

A structural equation model of land capability and related drivers: Implications for land degradation forecasting in a tropical river basin

AbstractLand degradation is a worldwide problem with natural and anthropogenic causes. An important anthropogenic cause of land degradation is land uses that deviate from land capability, which is the “natural” use. Despite the conscience of scientists about this issue, studies are lacking that set up a quantitative nexus between land capability and related drivers. This nexus is essential because it allows anticipating changes in the drivers that promote or recede degradation. In this study, a partial least squares–path model (PLS–PM) was used to help closing this gap. The pilot study occurred in seven Paraopeba River sub‐basins located in the State of Minas Gerais (Brazil), where capability is dominated by mosaics of forests and pastures. Land capability was assessed by the ruggedness number, being inversely proportional to it. Among multiple potential drivers of land capability initially included in the model, collinearity and other consistency and performance analyses indicated the percentage of latosols and (re)forested areas, annual rainfall, and water‐related processes (e.g., weathering, nutrient leaching) as prominent in the studied region. The results linked increases of latosol and forest occupation to runoff reduction [runoff = latosol × (−0.640) + forest × (−0.156) + reforestation × (−0.379)], suggesting an attenuation of erosion by these parameters, namely gully erosion that impacts on the ruggedness number and land capability in the sequel. The weathering of carbonate rocks was also related to land capability changes because the PLS–PM model exposed a relationship between the ruggedness number and products of carbonate rock dissolution: ruggedness number = alkalinity × (−0.578) + total magnesium × (0.462) + dissolved oxygen × (−0.418). In addition to highlighting processes capable of changing land capability overtime, the model equations brought attention to measures that could improve it in the region thus preventing degradation. The measures included management practices capable to raise the soil's dissolved oxygen (e.g., through aeration) or preventing soil's magnesium deficiency (e.g., through foliar sprays). The network of cause‐and‐effect relationships set up by the PLS–PM model was finally used to elucidate about potential land use changes that would bring capability in the Paraopeba River basin towards a better status, such as conversions to pasture land. Future work is expected to further elucidate about the benefits for land capability of specific land use changes, through the testing of expected socioeconomic development scenarios.

Epidemiology of monkeypox notifications in the state of Minas Gerais, Brazil.

to describe the epidemiological profile of suspected, confirmed, and probable cases of monkeypox in the state of Minas Gerais, Brazil. a descriptive, retrospective study of reported suspected, confirmed, and probable cases of monkeypox infection in the state of Minas Gerais, Brazil. The study period was from the first notification, on June 11, to September 7, 2022. a total of 759 suspected, confirmed, and probable cases of monkeypox infection were reported, with 35.44% suspected, 53.75% confirmed, and 10.81% probable cases, respectively. As for the coexisting diseases within confirmed cases, 38.79% were related to people living with human immunodeficiency virus, and 13.74% had some active sexually transmitted infection. Regarding the evolution of confirmed cases, 47.43% were cured. the results contribute to greater knowledge and control of the infection by allowing better disease management and care offered in health services.

Descriptive study of reported cases of sexual violence and specialized care services in the state of Minas Gerais, Brazil, 2019.

to describe the sociodemographic profile of reported cases of sexual violence (SV) and the distribution of care services for this health condition in the state of Minas Gerais, Brazil, 2019. this was a descriptive study of the cases of sexual violence reported on the Notifiable Health Conditions Information System and care services registered in the National Health Establishment Registry. a total of 4,418 notifications of SV were identified during the study period, representing more than 12 notifications per day; the majority of notifications were among females (87.0%) and among children and adolescents (72.0%); the distribution of care services showed care gaps in four of the 14 health macro-regions of the state of Minas Gerais; the maximum distances traveled to access referral services ranged from 93 to 327 km. the scarcity of care services for people subjected to sexual violence in the micro-regions and macro-regions of Minas Gerais highlights the need for planning public policies aimed at increasing access to these services. Over 12 notifications of sexual violence were reported per day in the state of Minas Gerais in 2019, with a higher prevalence in females, children and adolescents, mixed-race/Black people. Care gaps were identified in four macro-regions of the state. There was a need for victims to travel long distances to receive care in municipalities with referral services for comprehensive care for sexual violence, which may hinder access and timely care. It is expected that the results can contribute to improving public policies, considering the need to strategically plan the location of specialized services for people subjected to sexual violence.

Construction Processes Paradigm and Reinforcement Alternatives for Tailings Dam Soil

In the last decade, Brazil was the scene of two of the world’s biggest disasters related to mining tailings dams. The collapse of the Mariana and Brumadinho dams was catastrophic event that brought to light major environmental and humanitarian crises. Facts like this incite debate on the safety of dam construction methods and highlight the need for a broad discussion of dam safety legislation in the country. From the above, this paper promotes a review of various forms of construction of tailings dams and their associated problems, as well as discusses the techniques for soil reinforcement and their construction methods. The work also brings an overview of the Brazilian dams from April to July 2019, tracing the context of the Brazilian tailings dams months after the tragedy of Brumadinho. The methodology includes a robust literature review and discourse analysis. In Brazil, the number of ruptured dams is alarming, especially in the state of Minas Gerais, in which more than 7 have broken in the last two decades. Among the damages, the deaths impact society abruptly and were cataloged 455 deaths, of which 216 correspond to the rupture of the dam of the Córrego do Feijão mine in Brumadinho. To evaluate and diagnose a dam, one should consider ordinance N ° 70,389, 2017 revoked by Resolution ANM n ° 95, of February 7, 2022. In this context, in March 2019, we experienced several disturbing situations regarding dam instability in the state of Minas Gerais, being categorized as risky structures. To exemplify, one can cite dams classified as level 2 risk that became level 3. Due to the above facts, several studies are being conducted to improve soil aspects. For example, we highlight the increase in soil resistance that can be done using commercial and alternative materials available in the environment.

VENOPUNÇÃO PERIFÉRICA E SUA MANUTENÇÃO: REPRESENTAÇÃO SOCIAL POR MULHERES EM CESARIANA

ABSTRACT Objective: to identify and analyze the social representations and their dimensions about peripheral venous catheterization and its maintenance for anesthetic-surgical purposes in women undergoing cesarean section. Method: qualitative study of exploratory-descriptive type grounded by the Theory of Social Representations with the participation of 120 women and carried out in a public hospital in the state of Minas Gerais - Brazil, between 2019 and 2020. Evocations collected by interviews with application of the technique of free association of non-hierarchical words with prototypical analysis and by similarity in the EVOC and IRAMUTEQ software. Results: the present social representation addresses feelings in the behavioral dimension of stress, which are related to insecurity and fear of the pain of the needle, the surgical procedure, and the restriction of movements. Conclusion: the research contributes to a reflection on the need to resize nursing care before the difficulties faced by women in the triple experience of stress: cesarean section; venous catheterization; and the difficulty of performing postpartum care.

Manejo da poda de amora-preta para aumentar a sazonalidade da colheita

Abstract The objective of this work was to evaluate the pruning management of the BRS Tupy and Brazos blackberry cultivars, in order to extend their harvest seasonality and fruit yield. The experiment was performed in an altitude subtropical region in the state of Minas Gerais, Brazil. Bushes were grown at 3.0x0.5 m spacing. The treatments consisted of the four following pruning seasons: one conventional pruning, with suppression of the produced stems in February and reduction of the stems in July; and three drastic pruning performed in the first two weeks of January, March, and May, with the application of 10% urea and 3% hydrogenated cyanamide five months later. The experimental design was in randomized complete blocks, in a 2x4 factorial arrangement, with two cultivars and four pruning managements, with four blocks. Fruit phenology, yield, and physicochemical quality were evaluated in two production cycles. It is possible to extend the harvest season of blackberry up to five months, in an altitude subtropical region in Lavras, in the state of Minas Gerais, Brazil, with drastic pruning in January and no irrigation. Drastic pruning in January or March increases the yield of the BRS Tupy and Brazos blackberry cultivars. The extended harvest season does not affect the quality of blackberries and does not create challenges for harvesting operations.

Spatial behavior of hepatitis A, MMR, and varicella vaccination coverage in the state of Minas Gerais, 2020.

To analyze the spatial behavior of hepatitis A, measles, mumps, and rubella (MMR), and varicella vaccination coverage in children and its relationship with socioeconomic determinants in the state of Minas Gerais. This ecological study investigated records of doses administered to children, extracted from the Immunization Information System of 853 municipalities in Minas Gerais, in 2020. We analyzed the vaccination coverage and socioeconomic factors. Spatial scan statistics were used to identify spatial clusters and measure the relative risk based on the vaccination coverage indicator and the Bivariate Moran Index, and thus detect socioeconomic factors correlated with the spatial distribution of vaccination. We used the cartographic base of the state and its municipalities and the ArcGIS and SPSS software programs. Hepatitis A (89.0%), MMR (75.7%), and varicella (89.0%) showed low vaccination coverage. All vaccines analyzed had significant clusters. The clusters most likely to vaccinate their population were mainly located in the Central, Midwest, South Central, and Northwest regions, while the least likely were in the North, Northeast, and Triângulo do Sul regions. The municipal human development index, urbanization rate, and gross domestic product were spatially dependent on vaccination coverage. The spatial behavior of hepatitis A, MMR, and varicella vaccination coverage is heterogeneous and associated with socioeconomic factors. We emphasize that vaccination records require attention and should be continuously monitored to improve the quality of information used in services and research.

Mortality patterns in municipalities of a mining region before the Brumadinho dam failure, state of Minas Gerais, Brazil.

To describe the patterns of overall mortality and mortality from external causes and the temporal evolution in the municipalities of the Paraopeba River Basin, before the socio-environmental disaster of the Brumadinho dam and, additionally, to investigate the correlation between mortality and socioeconomic deprivation in these municipalities. Global Burden of Disease Study mortality estimates for 26 municipalities in the state of Minas Gerais, Brazil, were analyzed. Rates of overall mortality and mortality from external causes were estimated in the triennia (T) T1 (2000 to 2002), T2 (2009 to 2011), and T3 (2016 to 2018). Pearson's correlation coefficient measured the association between mortality rates and socioeconomic deprivation, according to the Brazilian Deprivation Index (IBP). There was a decrease in overall mortality in the Paraopeba River Basin from 717.7/100 thousand to 572.6/100 thousand inhabitants, and in most municipalities between T1-T3. Mortality from external causes increased from 73.3/100 thousand to 82.1/100 thousand, and it was higher in these municipalities compared with the mean for Brazil and Minas Gerais. Deaths from suicide and interpersonal violence increased from 29.6/100 thousand to 43.2/100 thousand in most of the 26 municipalities. Death rates due to unintentional injuries decreased during the period, and those due to transport injuries, increased. There was a positive correlation between socioeconomic deprivation and the percent change in mortality rates. Despite the strong presence of mining activity in the region, such did not reflect in the improvement of the sanitary situation. Death rates due to external causes increased in the period, associated with inequalities, which must be considered in the planning for the recovery of the disaster areas.

Vulnerability of the young university population to HIV/AIDS and other sexually transmitted infections

Introduction: Brazilian universities receive annually thousands of young people who experience situations of vulnerability to the human immunodeficiency virus, sexually transmitted infections, and viral hepatitis. Objective: The aim of the present study was to analyze the secondary data obtained from the attendance record of the rapid testing campaign for these health problems at a federal university in the state of Minas Gerais, Brazil, in 2019. Methods: A cross-sectional study was conducted with secondary data of students (n=1,113) obtained from the standard attendance form by the Ministry of Health during the campaigns Fique Sabendo (Be Aware) in the period between November 25 and 29, 2019. Analyses were performed with the support of the Statistical Package for Social Sciences program, with the calculation of absolute and relative frequencies. Pearson’s chi-square test (5%) was used for comparison. Results: The results revealed a young, heterosexual, white profile. More than half reported having consumed alcohol and drugs in their lives. Other findings were the non-use of condoms with steady partners (18.1%) and occasional partners (21.3%), oral sex (86.8%), and unprotected sex in the last intercourse (45.6%). Most declared never being tested for human immunodeficiency virus (74.5%), syphilis (67.4%), hepatitis B (76.1%), or hepatitis C (77.0%). Conclusion: The university population is vulnerable to human immunodeficiency virus and other sexually transmitted infections due to the number of sexual partners and discontinued use of condoms with occasional partners. Such vulnerability is increased by the use of alcohol and other drugs.

DO PROJETO PEDAGÓGICO À SALA DE AULA: A INTERDISCIPLINARIDADE NO CONTEXTO DO CURSO BC&T

ABSTRACT This study aimed to characterize interdisciplinarity within the Bachelor of Interdisciplinary Studies in Science and Technology - BC&T degree at a federal university located in the state of Minas Gerais, based on the proposal of the ‘Guiding References for Interdisciplinary Bachelor’s and Similar’. We are grounded on the works of Lenoir (1998), Japiassu (1976), Coimbra (2000), Fazenda (2010), Fortunato and Confortin (2013), Tosta (2011), Almeida (2010) and Morin (2003). We aimed to check if the course, through its Pedagogical Project and the didactic-pedagogical actions, is in line with the guidelines and principles of the Bachelor of Interdisciplinary Studies - BIs regarding interdisciplinarity. For this, we carried out a qualitative and quantitative study with bibliographic and documental research, and a field study, using questionnaires applied to fifth and sixth-semester students and semi-structured interviews with professors. We found out that, in general, in the context of the course, the interdisciplinary methodology is not adopted as established in BIs’ guidelines and principles. Based on data analysis and supported by the theoretical contribution of the consulted authors, we present some proposals to contribute to the dissemination of interdisciplinarity in the teaching and learning process of BIs. In addition, we aim to contribute to the scientific development of the theme enabling new discussions to ensure the effectiveness of interdisciplinary actions in educational institutions.

Uso potencial de folhas de batata-doce para consumo humano

Abstract The objective of this work was to select sweet potato (Ipomoea batatas) genotypes with leaves with potential to be used for human consumption. Twenty-six experimental genotypes and four commercial cultivars were tested in a randomized complete block design with three replicates and ten plants per plot. The trial was carried out in the municipality of Lavras, in the state of Minas Gerais, Brazil. Leaf shape and lobe, aerial-part yield, edible-leaf yield, edible-leaf percentage, edible-leaf dry mass, and latex production, as well as leaf total chlorophyll, pH, soluble solids contents, titratable acidity, total phenolic compounds, and anthocyanin contents, were evaluated. Roots were characterized as to their pulp and peel colors. Fifteen genotypes presented the highest aerial-part (29.6 to 51.8 Mg ha-1) and edible leaf (7.8 to 12.7 Mg ha-1) yields. In the biochemical analysis, high contents of chlorophyll, total phenolics, and anthocyanins were observed. In addition, pH, soluble solids, and leaf titratable acidity did not differ significantly among the evaluated genotypes. Leaves of ten genotypes are recommended for human consumption.

Lychnophora pinaster in endangered campos rupestres: phenolic compounds and population ecogeography.

Lychnophora pinaster, known as arnica-mineira, is endemic to campos rupestres, at risk of extinction. The present study aimed to characterize the ecogeography and phenolic constituents of 11 L. pinaster populations collected in the mesoregions North, Jequitinhonha, Metropolitan of Belo Horizonte and Campos das Vertentes in the state of Minas Gerais, Brazil. Phenolic constituents were identified and quantified by Ultra-high performance liquid chromatography- mass spectrometry. Lychnophora pinaster occurs in sites at high altitude (700 and 1498 m), annual rainfall of up to 1455 m, soils with low fertility and predominantly loamy texture. Therefore, it can be considered tolerant to acidic soils, with low availability of nutrient. The most abundant substances in all populations were vitexin (18 - 1345 ng/g) and chlorogenic acid (60 - 767 ng/g). The 11 populations formed four groups in relation to the phenolic constituents, with group 1 consisting of the populations of the North Mesoregion (GM, OD) and Jetiquinhonha (DIMa), group 2, the Metropolitan of Belo Horizonte (SRM, NLSC, SM, RPS, CTRA), group 3, the North Mesoregion (ODMa and DI), and group 4, the Campos das Vertentes (CC). Among the populations, only those from the Metropolitan of Belo Horizonte showed correlation of soil properties with phenolic constituents.

Cobertura vacinal em crianças no estado de Minas Gerais entre 2018 e 2021: avaliação do possível impacto da COVID-19 na imunização infantil

Cobertura vacinal em crianças no estado de Minas Gerais entre 2018 e 2021: avaliação do possível impacto da COVID-19 na imunização infantil

Molecular detection of hemoplasmas in rescued black-eared opossums (Didelphis aurita Wied-Neuwied, 1826) from southeastern Brazil, with evidence of a novel genotype infecting marsupials.

There is a growing concern about the participation of wild hosts and reservoirs in the epidemiology of several pathogens, particularly within the context of environmental changes and the expansion of the One Health concept. The aim of this study was to investigate the presence of hemoplasmas in opossums rescued from the metropolitan region of Rio de Janeiro state, Brazil. Blood samples were collected from 15 Didelphis aurita and subjected to DNA extraction and PCR using primers for the 16S rRNA and 23S rRNA genes. Physical examination and hematological analysis were also performed. Three out of 15 opossums tested positive for hemotropic Mycoplasma spp. by PCR and showed hematological alterations such as anemia and leukocytosis. Clinical signs were non-specific and associated to traumatic lesions. The phylogenetic analysis indicated that the hemoplasma detected was positioned between 'Ca. Mycoplasma haemodidelphis' detected in D. virginiana from North American and hemoplasmas recently detected in D. aurita from the state of Minas Gerais, Brazil. This study indicates the existence of hemoplasma infections in D. aurita from the metropolitan region of Rio de Janeiro, and reinforce the need for new epidemiological inquiries to clarify the participation of these in the dynamics of circulation of tick-borne pathogens.

Mortality patterns in municipalities of a mining region before the Brumadinho dam failure, state of Minas Gerais, Brazil

RESUMO: Objetivo: Descrever os padrões de mortalidade geral e por causas externas e a evolução temporal nos municípios da Bacia Hidrográfica do Rio Paraopeba previamente ao desastre socioambiental de Brumadinho e, adicionalmente, investigar a correlação entre a mortalidade e a privação socioeconômica nesses municípios. Métodos: Foram analisadas estimativas de mortalidade do Estudo Carga Global de Doenças referentes a 26 municípios de Minas Gerais. Calcularam-se taxas de mortalidade geral e por causas externas nos triênios (T) T1 (2000 a 2002), T2 (2009 a 2011) e T3 (2016 a 2018). O coeficiente de correlação de Pearson mediu associação entre as taxas de mortalidade e a privação socioeconômica, segundo Índice Brasileiro de Privação. Resultados: Houve declínio da mortalidade geral na Bacia Hidrográfica do Rio Paraopeba de 717,7/100.000 para 572,6/100.000 hab. e na maioria dos municípios entre T1-T3. A mortalidade por causas externas aumentou de 73,3/100.000 para 82,1/100.000 e foi mais elevada nesses municípios comparando-se com a média do Brasil e de Minas Gerais. As mortes por suicídio e violência interpessoal aumentaram de 29,6/100.000 para 43,2/100.000 na maioria dos 26 municípios. Os acidentes não intencionais reduziram-se no período, e as taxas por acidente de transporte aumentaram. Houve correlação positiva entre a privação socioeconômica e a variação percentual das taxas de mortalidade. Conclusão: Apesar da forte presença da atividade mineradora na região, isso não refletiu na melhoria do quadro sanitário, as causas externas aumentaram no período, associadas às desigualdades, o que deve ser considerado no planejamento para a recuperação das áreas do desastre.

Epidemiology of monkeypox notifications in the state of Minas Gerais, Brazil

RESUMO Objetivos: descrever o perfil epidemiológico dos casos suspeitos, confirmados e prováveis por monkeypox no estado de Minas Gerais, Brasil. Métodos: estudo descritivo, retrospectivo, com os casos notificados suspeitos, confirmados e prováveis de infecção pelo monkeypox no estado de Minas Gerais, Brasil. O período do estudo foi desde a primeira notificação, em 11 de junho, até 7 de setembro de 2022. Resultados: foram notificados 759 casos suspeitos, confirmados e prováveis de infecção pelo monkeypox, sendo, respectivamente, 35,44% suspeitos, 53,75% confirmados e 10,81% prováveis. Quanto às doenças coexistentes nos casos confirmados, 38,79% referiam-se a pessoas vivendo com vírus da imunodeficiência humana, e 13,74% possuíam alguma infecção sexualmente transmissível ativa. Sobre a evolução dos casos confirmados, 47,43% evoluíram para a cura. Conclusões: os resultados contribuem para maior conhecimento e controle da infecção, de modo a auxiliar no melhor gerenciamento da doença e cuidado ofertados nos serviços de saúde.

Spatial behavior of hepatitis A, MMR, and varicella vaccination coverage in the state of Minas Gerais, 2020

RESUMO Objetivo: Analisar o comportamento espacial da cobertura vacinal da hepatite A, tríplice viral e varicela em crianças e a relação com determinantes socioeconômicos, no estado de Minas Gerais. Métodos: Estudo ecológico que considerou os registros de doses aplicadas em crianças extraídos do Sistema de Informação de Imunização de 853 municípios mineiros, em 2020. Analisaram-se as coberturas vacinais e os fatores socioeconômicos. A estatística scan espacial foi utilizada para identificar agrupamentos espaciais e medir o risco relativo pelo indicador de cobertura vacinal e o Índice de Moran Bivariado para identificar os fatores socioeconômicos correlacionados com a distribuição espacial da vacinação. Utilizou-se a base cartográfica do estado e de seus municípios e os softwares ArcGIS e SPSS. Resultados: Observaram-se baixas coberturas para as vacinas de hepatite A (89,0%), tríplice viral (75,7%) e varicela (89,0%). Foram identificados aglomerados significativos em todas as vacinas analisadas. Os aglomerados de maior chance de a população ser vacinada se alocaram majoritariamente nas regiões Centro, Centro-Oeste, Centro-Sul, Noroeste, e as de menor propensão para a vacinação encontram-se nas regiões Norte, Nordeste e Triângulo do Sul. O índice de desenvolvimento humano municipal, a taxa de urbanização e o produto interno bruto tiveram dependência espacial com a cobertura vacinal. Conclusões: Há heterogeneidades no comportamento espacial das coberturas para as vacinas hepatite A, tríplice viral e varicela, e essa condição se encontra associada a fatores socioeconômicos. Destaca-se que os registros de vacinação requerem atenção e devem ser continuamente acompanhados para aprimoramento da qualidade das informações utilizadas nos serviços e nas pesquisas.

Descriptive study of reported cases of sexual violence and specialized care services in the state of Minas Gerais, Brazil, 2019

RESUMO Objetivo descrever o perfil sociodemográfico dos casos notificados de violência sexual (VS) e a distribuição dos serviços de atendimento ao agravo em Minas Gerais, Brasil, 2019. Métodos estudo descritivo dos casos notificados no Sistema de Informação de Agravos de Notificação e dos serviços registrados no Cadastro Nacional dos Estabelecimentos de Saúde. Resultados foram identificadas 4.418 notificações de VS no período, correspondendo a mais de 12 notificações/dia; houve maior frequência de notificações no sexo feminino (87,0%) e entre crianças e adolescentes (72,0%); a distribuição dos serviços mostrou vazios assistenciais em quatro das 14 macrorregiões de saúde do estado; as distâncias máximas percorridas para atendimento em serviços de referência variaram de 93 a 327 km. Conclusão a escassez de serviços de atendimento a pessoas em situação de VS nas microrregiões e macrorregiões de Minas Gerais sinalizam a necessidade de planejamento de políticas públicas visando aumentar o acesso a esses serviços.

Performance of bifacial PV modules under different operating conditions in the State of Minas Gerais, Brazil

Brazil's cumulative photovoltaic (PV) installations have now surpassed 32 GWp. The fastest growing and most prevalent PV technology is the bifacial photovoltaic module, which is now being incorporated in more than 2/3 of new power plants. These modules collect solar radiation on both front and rear sides, providing gains in electricity production compared to traditional monofacial modules. The market acceptance and quality control of this technology requires standard methods to accurately determine the nominal power of the bifacial modules. But the specification of energy production from the bifacial backside is complicated due to critical factors that include the albedo, the separation, height, and positioning of the modules, the shading of the rear surface, and the specific geographic and climate conditions. This paper addresses these issues in determining the performance of bifacial PV modules in the tropical conditions of the State of Minas Gerais, Brazil. Specifically, the bifacial gain for modules and systems is evaluated, assessing the effects of albedo, site maintenance, climate/environmental conditions, thermal behavior, and back-surface shading. The special cases of tracking versus non-tracking systems are evaluated showing specific attention needs to the albedo changes and rear module shading constraints. These studies are performed on real power plants having different operating conditions (e.g., tracking, non-tracking, ground cover). The methodology includes I-V characterization of modules and string and thermal imaging/mapping under existing climate and meteorological conditions. Correlations with experimental albedo conditions is a special concern with these studies. These results are further compared to controlled laboratory measurements to establish information needed to better evaluate the developing standard for actual local operating conditions. This case study provides evaluation of the quality of the both the bifacial PV products being used and their installations in the rapidly emerging Brazil PV markets.

Diversidade de cepas de Mycoplasma hyopneumoniae em suínos em terminação brasileiros

ABSTRACT: Mycoplasma hyopneumoniae is one of the most challenging respiratory pathogens involved with swine pneumonia worldwide, responsible for a chronic infection with high morbidity, which predisposes secondary bacterial infections in growing and finishing pigs. Advances in diagnostic techniques allowed identification of genetic characteristics associated with high antigenic and proteomic variability among bacterial strains. This study aimed to evaluate the genetic diversity of M. hyopneumoniae strains in lungs with pneumonic lesions obtained from 52 pig farms located in Minas Gerais, one of the largest swine production states in Brazil. Genotyping was performed using multilocus variable number of tandem repeat (VNTR) analysis (MLVA), targeting two loci encoding P97 and P146 adhesins VNTR. The results showed that this agent is widely disseminated in pig farms and there is a high polymorphism of M. hyopneumoniae variants circulating in the state of Minas Gerais. Different M. hyopneumoniae genotypes are randomly distributed in several regions of the state, with no specific geographic population structure pattern. M. hyopneumoniae association with viral agents was sporadic (3.17% with Influenza A and 1.9% with PCV2).