153 research outputs found
ARTICULAR PAIN IS CORRELATED WITH ULTRASOUND POWER DOPPLER FINDINGS?
Universidade Federal de São Paulo, Div Rheumatol, São Paulo, BrazilUniversidade Federal de São Paulo, Div Radiol, São Paulo, BrazilUniv Politecn Marche, Div Rheumatol, Jesi, ItalyUniversidade Federal de São Paulo, Div Rheumatol, São Paulo, BrazilUniversidade Federal de São Paulo, Div Radiol, São Paulo, BrazilWeb of Scienc
Seagrass can mitigate negative ocean acidification effects on calcifying algae
The ultimate effect that ocean acidification (OA) and warming will have on the physiology of calcifying algae is still largely uncertain. Responses depend on the complex interactions between seawater chemistry, global/local stressors and species-specific physiologies. There is a significant gap regarding the effect that metabolic interactions between coexisting species may have on local seawater chemistry and the concurrent effect of OA. Here, we manipulated CO2 and temperature to evaluate the physiological responses of two common photoautotrophs from shallow tropical marine coastal ecosystems in Brazil: the calcifying alga Halimeda cuneata, and the seagrass Halodule wrightii. We tested whether or not seagrass presence can influence the calcification rate of a widespread and abundant species of Halimeda under OA and warming. Our results demonstrate that under elevated CO2, the high photosynthetic rates of H. wrightii contribute to raise H. cuneata calcification more than two-fold and thus we suggest that H. cuneata populations coexisting with H. wrightii may have a higher resilience to OA conditions. This conclusion supports the more general hypothesis that, in coastal and shallow reef environments, the metabolic interactions between calcifying and non-calcifying organisms are instrumental in providing refuge against OA effects and increasing the resilience of the more OA-susceptible species.E.B. would like to thank the Coordenação de Aperfeiçoamento de Pessoas de Nível Superior (CAPES) for Masters
funding. Funding for this project came from the Synergism grant (CNPq 407365/2013-3). We extend our thanks
to the Brazil-based Projeto Coral Vivo and its sponsor PetroBras Ambiental for providing the Marine Mesocosm
structure and experimental assistance.info:eu-repo/semantics/publishedVersio
Reports of Brazilian federal meat inspection system in swine slaughterhouses.
Abstract In the last decades the pig production improvement had impacted on zoonotic profile attributed to pork. This fact has created a need to modernize the meat inspection system traditionally applied, driving the focus to risks that really threaten food safety nowadays. This modernization is a trend in meat producer countries and European Union is ahead in this process. In this way, Brazil is assessing the new systems and building an own proposal which has been conducted under a national project linked by many coordinated actions. The first step of this work is to analyze the data of current inspection system. Then, the aim of this study is to evaluate the carcasses and viscera disposition reported by Brazilian Federal Meat Inspection. The analyzed database encompasses the reports of 114 slaughterhouses recorded from 2012 to 2014 into SIGSIF platform. The results were summarized by descriptive statistics on tables and figures using the SAS software. It was possible to show that the major ?post mortem? causes of carcass/viscera trimming or condemnation were resulted from production diseases, as adherences (3.72%), pleurisy (0.85%), abscess (0.58%) and pneumonia (0.20%). Likewise for industrial process problems, as carcass contamination by evisceration leaking (1.8%) and traumatic lesions (1.57%). Zoonosis injuries condemnations were reported in very low frequency in a few slaughterhouses, usually once. Among the total of organs and carcass inspected, cysticercosis was registered in just 0.00092% in 25 slaughterhouses, endocarditis in 0.00193% (23 slaughterhouses), erysipelas in 0.0045% (38 slaughterhouses), sarcosporidiosis in 0.00051% (17 slaughterhouses) and tuberculosis in 0.000046% (12 slaughterhouses). Thus, the current meat inspection system is prepared to detect zoonosis that no longer occur or happen in very low frequency. In the other hand, the traditional ante and post mortem inspection methodologies are not able to detect the main current foodborne pathogens globally distributed as Salmonella.SafePork 2017
Recent environmental changes in the area of La Maddalena Harbour (Sardinia, Italy): data from mollusks and benthic foraminifera
Mollusks and benthic foraminifera are reliable tools to paleo-environmental reconstructions because they commonly occur in most marine habitats and are sensitive to major and short-lived changes of environmental drivers, induced by both natural and anthropogenic events. Their community structure provides useful information about the characteristics of their habitat and some species are sensitive to specific environmental controls. Features such as changes in species composition and community, or variation in test morphology provide evidence of fluctuation of several environmental factors. Therefore, both mollusks and benthic foraminifera can be used as an efficient method for identifying the history and ecological trajectory of marine ecosystems.
This study focuses on the macro- (mollusks) and micropaleontological (benthic foraminifera) study of a 3 m long sediment core collected in the former military arsenal of the La Maddalena harbor (N Sardinia, Italy), at a depth of 15 m. The core site is located on the S-E coast of La Maddalena island, that underwent a complex history of human occupation along with natural environmental evolution and human-derived pressures. We aimed to reconstruct the main environmental changes recorded in the fossil benthic communities along the core, and to propose the most likely factors that caused these changes. Both mollusks and benthic foraminifera have been picked from the core, identified at genus/species level and counted. Ecological indications for each species have been extracted from literature. Univariate and multivariate statistics have been applied to highlight the community dynamics.
More than 90 species of benthic foraminifera have been identified, and 101 mollusk species (846 specimens). The foraminifera diversity indices show a general reduction from the first 50 cm downcore. This slight decline is accompanied by changes in foraminiferal assemblages. The results concerning changes in foraminiferal species composition, their abundance and biodiversity, supported by statistical analyses (cluster analysis), allowed identification of three major foraminiferal associations corresponding to different marine coastal settings. The same results have been obtained by using mollusks and their ecological significance in the framework of benthic marine bionomics. Species are related to infralittoral vegetated bottom such as Posidonia meadows (HP) or photophilous algae through the core, but with variation in percentage of abundance, and HP species decreases from the bottom to the top, whereas species related to muddy bottom follow the opposite trend (coastal detritic mud, deep mud). This testifies that the area underwent a progressive reduction of Posidonia meadows and light-loving algae with a shift toward muddy bottoms, possibly related to the effect of the intensive renovation works of the harbor area. Moreover, radiocarbon dating obtained from Cerithium specimens indicated that the sedimentation rate increases in the upper portion of the core, according to the ecological signal reconstructed by the analysis of the mollusk assemblage
Diversity and dynamics of seaweed associated microbial communities inhabiting the lagoon of venice
Seaweeds are a group of essential photosynthetic organisms that harbor a rich diversity of associated microbial communities with substantial functions related to host health and defense. Environmental and anthropogenic stressors may disrupt the microbial communities and their metabolic activity, leading to host physiological alterations that negatively affect seaweeds’ performance and survival. Here, the bacterial communities associated with one of the most common seaweed, Ulva laetevirens Areshough, were sampled over a year at three sites of the lagoon of Venice affected by different environmental and anthropogenic stressors. Bacterial communities were characterized through Illumina sequencing of the V4 hypervariable region of 16S rRNA genes. The study demonstrated that the seaweed associated bacterial communities at sites impacted by environmental stressors were host-specific and differed significantly from the less affected site. Furthermore, these communities were significantly distinct from those of the surrounding seawater. The bacterial communities’ composition was significantly correlated with environmental parameters (nutrient concentrations, dissolved oxygen saturation, and pH) across sites. This study showed that several more abundant bacteria on U. laetevirens at stressed sites belonged to taxa related to the host response to the stressors. Overall, environmental parameters and anthropogenic stressors were shown to substantially affect seaweed associated bacterial communities, which reflect the host response to environmental variations
Avaliação dos dados de abate e condenações/desvios de suínos registrados no Sistema de Informações Gerenciais do Serviço de Inspeção Federal nos anos de 2012 a 2014.
bitstream/item/184390/1/final8900.pd
Ácaros (Acari) de seringueira (Hevea brasiliensis Muell. Arg., Euphorbiaceae) e de euforbiáceas espontâneas no interior dos cultivos
Mammography-based screening program: preliminary results from a first 2-year round in a Brazilian region using mobile and fixed units
RLH, TBS and ALF made substantial contributions to the conception and
design of the article, the acquisition, analysis and interpretation of the data,
and drafting of the article. ECM, JSCM and NB made substantial
contributions to the conception and design of the study.Background: Breast cancer is the most frequently diagnosed cancer and the leading cause of cancer deaths
among women worldwide. The use of mobile mammography units to offer screening to women living in remote
areas is a rational strategy to increase the number of women examined. This study aimed to evaluate results from
the first 2 years of a government-organized mammography screening program implemented with a mobile unit
(MU) and a fixed unit (FU) in a rural county in Brazil. The program offered breast cancer screening to women living
in Barretos and the surrounding area.
Methods: Based on epidemiologic data, 54 238 women, aged 40 to 69 years, were eligible for breast cancer
screening. The study included women examined from April 1, 2003 to March 31, 2005. The chi-square test and
Bonferroni correction analyses were used to evaluate the frequencies of tumors and the importance of clinical
parameters and tumor characteristics. Significance was set at p < 0.05.
Results: Overall, 17 964 women underwent mammography. This represented 33.1% of eligible women in the area.
A mean of 18.6 and 26.3 women per day were examined in the FU and MU, respectively. Seventy six patients were
diagnosed with breast cancer (41 (54%) in the MU). This represented 4.2 cases of breast cancer per 1000
examinations. The number of cancers detected was significantly higher in women aged 60 to 69 years than in
those aged 50 to 59 years (p < 0.001) or 40 to 49 years (p < 0.001). No difference was observed between women
aged 40 to 49 years and those aged 50 to 59 years (p = 0.164). The proportion of tumors in the early (EC 0 and EC
I) and advanced (CS III and CS IV) stages of development were 43.4% and 15.8%, respectively.
Conclusions: Preliminary results indicate that this mammography screening program is feasible for implementation
in a rural Brazilian territory and favor program continuation
The effect of hunger state on hypothalamic functional connectivity in response to food cues
ACKNOWLEDGMENT The authors thank Lisette Charbonnier for her relentless efforts in setting up the study at all three sites and collecting the Dutch data. Open Access funding enabled and organized by Projekt DEAL. FUNDING INFORMATION This work was financially supported by the European Union Seventh Framework Programme (FP7/2007–2013) for research, technological development, and demonstration under grant agreement 266408 (Full4Health, www.full4health.eu). Furthermore, the study was supported in parts by a grant (01GI0925) from the Federal Ministry of Education and Research (BMBF) to the German Center for Diabetes Research (DZD e.V.).Peer reviewedPublisher PD
Ensayo térmico normalizado de un colector solar con acumulación integrada parcialmente aislado, hecho con materiales accesibles y de fabricación simple
Este trabajo muestra el desarrollo de un colector con acumulación integrada con un particular diseño para prevenir enfriamiento nocturno, el cual fue evaluado térmicamente mediante la Norma IRAM 210004. El objetivo central fue obtener un equipo de bajo costo que ofreciera mejoresprestaciones que otros modelos pensando en una aplicación domiciliaria unifamiliar. Se detallan las características esenciales de un primer prototipo explicándose las razones que justifican la disposición geométrica de las partes componentes y su correlación con los materiales utilizados. Para la evaluación térmica se utiliza una máquina también diseñada y construida por el equipo de investigación, y se recurre a la aplicación rigurosa de la norma mencionada anteriormente. Los resultados obtenidos semuestran mediante gráficos y tablas, determinándose los coeficientes de la ecuación fundamental que da cuenta de la energía que puede proveer el equipo. Al informe convencional de la norma se adiciona un cálculo mensual para ver claramente la evolución de la Fracción Solar, y se provee una información gráfica que muestra la cobertura solar total o parcial de la demanda diaria mediante energía solar. Se compara este equipo con modelos previos ensayados con una norma equivalente, pudiéndose constatar una mejora en el comportamiento térmico del nuevo prototipo
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