Cyanobacteria detection in Guarapiranga Reservoir (São Paulo State, Brazil) using Landsat TM and ETM+ images

Algae bloom is one of the major consequences of the eutrophication of aquatic systems, including algae capable of producing toxic substances. Among these are several species of cyanobacteria, also known as blue-green algae, that have the capacity to adapt themselves to changes in the water column. Thus, the horizontal distribution of cyanobacteria harmful algae blooms (CHABs) is essential, not only to the environment, but also for public health. The use of remote sensing techniques for mapping CHABs has been explored by means of bio-optical modeling of phycocyanin (PC), a unique inland waters cyanobacteria pigment. However, due to the small number of sensors with a spectral band of the PC absorption feature, it is difficult to develop semi-analytical models. This study evaluated the use of an empirical model to identify CHABs using TM and ETM+ sensors aboard Landsat 5 and 7 satellites. Five images were acquired for applying the model. Besides the images, data was also collected in the Guarapiranga Reservoir, in São Paulo Metropolitan Region, regarding the cyanobacteria cell count (cells/mL), which was used as an indicator of CHABs biomass. When model values were analyzed excluding calibration factors for temperate lakes, they showed a medium correlation (R²=0.81, p=0.036), while when the factors were included the model showed a high correlation (R²=0.96, p=0.003) to the cyanobacteria cell count. The empirical model analyzed proved useful as an important tool for policy makers, since it provided information regarding the horizontal distribution of CHABs which could not be acquired from traditional monitoring techniques.

Efeito da suplementação de vitamina D no desenvolvimento de lesões pré-neoplásicas quimicamente induzidas em ratos Wistar macho

Pós-graduação em Biologia Geral e Aplicada - IBB

Estrutura eletrônica de derivados de C60 para aplicações em células solares orgânicas

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Tm-afm nonlinear motion control with robustness analysis to parametric errors in the control signal determination

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Scrotal Thermography and Doppler Ultrasonography of the Testicular Artery of Buffaloes Subjected to Environmental Heat Stress

The process of spermatic division and differentiation (spermatogenesis) occurs with intratesticular temperature lower that the corporal temperature and for that is essential that the testicular thermoregulation mechanism occurs properly. For evaluation of the scrotal surface temperature can be used the infrared thermography or testicular sensors, besides that, can be evaluated the blood flux in the spermatic cord through the Doppler ultrasonography. Therefore the objective of this study was the evaluation of the scrotal thermography and Doppler flowmetry of the testicular artery of buffaloes subjected to environmental heat stress. For that were used seven healthy buffaloes, with age of 3 and 4 years, of the Murrah breed. For the surface scrotal temperature measurement (SST, degrees C) and superficial neck temperature (SNT, degrees C) was used the infrared termography (Infra Cam (TM) of the brand FLIR Systems Inc.), then Doppler flowmetry of the testicular artery in the region of the spermatic cord through the ultrasonography (Mylab 5, Esaote (R)) and measurement of the rectal temperature (RT, degrees C). The evaluations were done in two moments: moment 1 (M1) with all the animals in the shade (Temperature=32,2 degrees C) and moment 2 (M2) after 3 hours of exposure of animals to the sun (Temperature=38,7 degrees C To calculate the resistivity index (RI) and pulsatility index (PI), spectra were obtained from pulsed Doppler in three random regions of the testicular artery in the spermatic cord. Data were subjected to analysis of variance (ANOVA) followed by T test, using a significance level of 5%. There was an increase (p<0,05) of RT (37,4 +/- 0,4(a) vs 39,0 +/- 0,3(b); M1 and M2 respectively), SST (30,6 +/- 1,4(a) vs 35,2,0 +/- 1,0(b); M1 and M2 respectively) and SNT (33,1 +/- 2,5(a) vs 38,5,0 +/- 0,3(b); M1 e M2 respectively) e RI (0,67 +/- 0,1(a) vs 0,74 +/- 0,1(b); M1 e M2 respectively) in M2. Increasing trend was observed (0,05>p>0,01) in PI (1,10 +/- 0,4(a) vs 1,23 +/- 0,2(b); M1 and M2 respectively) in M2. The results of the present study allow us to conclude the healthy buffaloes have the scrotal average surface temperature 3 degrees C lower that the body temperature and that the exposure of 3 hours to sun in healthy buffaloes causes thermal stress to the animals and changes in its surface scrotal temperature, and the Doppler flowmetry of the testicular artery demonstrating the importance of thermal management for breeding buffaloes. Besides that, the thermography and the Doppler ultrasonography presented great potential to detect changes of testicular perfusion, being a promising additional test in the buffalo andrological evaluation.

Comparison of Botu-bov and Tris as Freezing Extenders of Buffalo Sperm Recovered from Epididymal Cauda

Valuable genetic material can be preserved by the cryopreservation of epididymal sperm. This study evaluated the viability of pre-freezing and post-thawed sperm samples recovered from the epididymal cauda of buffaloes. Epididymides from eight Murrah buffaloes with 18 months of age were used. Semen samples were diluted in two different freezing extenders: Botu-bov (BB) and Tris (TRIS). Immediately after slaughter, both testicles from each animal were collected and transported at 4 degrees C for six hours interval. In laboratory, the removed epididymides were flushed to obtain sperm and the fractions were diluted in both freezing extenders (BB and TRIS). Semen doses were analyzed before and after frozen at -196 degrees C. BB and TRIS pre-freezing results were 38.54 +/- 22.33%(b) and 14.17 +/- 12.78%(a) for total motility (TM), 25.00 +/- 16.12(a) and 9.44 +/- 9.11(a) for progressive motility (PM), 7.21 +/- 0.98(a) and 5.09 +/- 2.65(a) for percentage of rapid cells (RAP), 91.08 +/- 12.53(b) and 63.33 +/- 31.47(a) for velocity of trajectory (VAP), 73.54 +/- 20.17(b) and 49.50 +/- 9.11(a) for linear progressive velocity (VSL), 172.21 +/- 24.55(a) and 116.94 +/- 59.48(a) for curvilinear velocity (VCL), respectively (P < 0.05). BB and TRIS post-thawing results were 42.25 +/- 21.50(b) and 17.62 +/- 19.46(a) for TM, 27.25 +/- 24.86(a) and 18.00 +/- 13.68(a) for PM, 7.35 +/- 0.98(a) and 6.26 +/- 1.13(a) for RAP, 91.42 +/- 16.86(a) and 75.96 +/- 13.17(a) for VAP, 67.96 +/- 12.13(a) and 60.04 +/- 10.42(a) for VSL, 177.54 +/- 23.53(b) and 141.29 +/- 24.97a for VCL, respectively (P < 0.05). The sperm recovered from the epididymal cauda, after 6 h storage of epididymides at 5 degrees C ensures sperm preservation demonstrating that the diluent Botu-bov had higher total motility both pre-and post-freezing when compared with TRIS. Additionally, the sperm frozen with the diluent Botu-bov showed higher values of VSL at post-thawing. These findings may reflect in improvement of conception rates.

Relação entre toxicidade urêmica, anemia e perda auditiva neurossensorial em indivíduos com doença renal crônica: um estudo prospectivo

Pós-graduação em Bases Gerais da Cirurgia - FMB

Escolaridade e volume de produção têm associação com a percepção de risco de produtores de leite no uso de produtos veterinários

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

livros infantis adequados para uma criança com deficiência visual: a experiência de bolsistas PIBID da FFC/UNESP/Marília

This article tells the experience of some scholarship holders of Subproject PIBID Pedagogy Literacy FFC, who have developed, between its activities: planning, analysis, confection and adequacy of books of infantile histories so that they can be read and better understood for a child with visual deficiency. The idea arose from the fact that the school in which the pupil is enrolled does not have in its collection such resources. The books followed the criteria of adequacy and present in the literature of specific preparation area and the results pointed to the schoolgirl showed interest and motivation to run the task to read the stories with the adjustments that are made.

Estudo biotecnológico, citogenético e molecular em espécies de orquídeas endêmicas da flora brasileira

Pós-graduação em Biociências - FCLAS

Potencial antimutagênico e antigenotóxico de compostos isolados da plana Casearia sylvestris em camundongos tratados com compostos orgânicos extraídos da biomassa de quima de cana-de-açucar

Compostos orgânicos extraídos da biomassa de queima de cana-de-açúcar têm ação genotóxica sobre os organismos vivos, contribuindo para mutagenicidade celular e desenvolvimento do câncer. Extratos vegetais vêm sendo estudados para avaliar sua capacidade de modificar a atividade de agentes mutagênicos. O presente estudo objetivou avaliar o eventual efeito antimutagênico e antigenotóxico do extrato etanólico da planta Casearia sylvestris e de uma substância pura isolada (Casearina U), frente efeito mutagênico e genotóxico de compostos orgânicos extraídos do particulado de queima de cana-de-açúcar. Durante 15 dias camundongos dos grupos teste (n=10) foram tratados com extrato etanólico de C. sylvestris nas concentrações de 0,13; 0,25 e 0,5 mg/mL (3,9; 7,5 e 15 mg/kg) ou com Casearina U nas concentrações de 0,01; 0,02 e 0,04 mg/mL (0,3; 0,6 e 1,2 mg/kg) através de gavagem, administrando posteriormente compostos orgânicos extraídos do particulado de queima de cana-de-açúcar (0,3mg/mL) por via intraperitoneal. Foi utilizado também o grupo controle negativo (tratado com água por gavagem e salina intraperitoneal), controle positivo (água por gavagem e ciclofosfamida 50mg/kg) e controle de poluente (água por gavagem e particulado de queima de cana-de-açúcar via intraperitoneal). Foi realizado teste do micronúcleo em eritrócitos policromáticos de medula óssea de camundongo para avaliação do efeito antimutagênico do extrato etanólico de C. sylvestris e da Casearina U. O extrato etanólico de C. sylvestris demonstrou efeito protetor antimutagênico nas concentrações de 3,9 mg/kg (p<0,01), 7,5 mg/kg (p<0,01) e 15,0 mg/kg (p<0,05), com as respectivas porcentagens de inibição de 81,25, 80,47 e 60,94%. Não foi observada diferença estatística entre as quantidades de eritrócitos policromáticos e normocromáticos, indicando que a redução do número ...(Resumo completo, clicar acesso eletrônico abaixo)

Cri-an-ça: a criatividade, a infância e a imaginação expressadas no desenho (porque os adultos têm sempre necessidade de explicações detalhadas)

O interesse por esta temática de trabalho surgiu a partir de um estudo realizado em minha iniciação científica, que tem por título “Ação, Câmera, Luz: Entre imagens e olhares – experiência de infâncias e montagens” desenvolvido no Departamento de Educação do Instituto de Biociências, localizado na Universidade Estadual Paulista – UNESP/Rio Claro. Como o próprio título sugere, ela tem por principal objetivo inverter a lógica da conhecida frase: “Luz, Câmera, Ação”. Este trabalho, ao inverter a ordem dos fatores, busca ver se ao deixarmos a ação das crianças livre, o que se produziria seria algo mais verdadeiro, mais significativo, de fato. O que a ausência de intencionalidade geraria aos produtores de imagens. A partir de então, comecei a imaginar outro tipo de produção de imagens, não mais com câmeras fotográficas e filmadoras, mas de próprio punho. Portanto, este trabalho tem por objetivo analisar as crianças, e suas realidades através do que elas mesmas nos dizem e nos mostram em seu dia a dia por meio de seus desenhos. Os desenhos utilizados foram retirados de uma instituição de ensino não formal da cidade de Rio Claro, e entendidos como documentos. A pesquisa traz também um aporte teórico com as concepções sobre desenho infantil de alguns teóricos, como Lowenfel, Greig, La Pastina, Vigotski entre outros

As insígnias dos clubes de futebol gerenciadas como marcas: um estudo sobre dois clubes paulistas

Soccer is a sport practiced in almost all the world. This allowed the characterization of this sport as a business area, which resulted in changes in the management of soccer clubs, which began to be managed using the concept of club-company. Considering this fact, a study was conducted to verify how the brazilian teams are developing their marketing actions, which allow treat their insignia as trademarks and obtain an additional revenue with these actions. Were selected as object of study two traditional clubs of São Paulo - the São Paulo Futebol Clube and the Sport Club Corinthians Paulista. Were collected primary data, but also, were used secondary data and documents, which were organized and analyzed through the concepts of brand, social and historical capital. This analysis identified that the two clubs taken as object of study carry out marketing actions, which were classified as related to the process of management of the insignia as a brand. Next, sought at the balance sheet of the clubs, evidences of the financial contribution of these actions to the revenues of the clubs. In this way, identified that the clubs researched have mobilized to professionally manage your brand, through targeted marketing actions to their fans, and the insignia of clubs are handled as brands, becoming one more source of revenue for the clubs

Classificação da cobertura da terra da RPPN Foz do Rio Aguapeí: abordagem booleana para a integração de imagens TM-Landsat e dados multifonte

The Companhia Energetica de Sao Paulo - CESP owns six hydroelectric dams in the state of São Paulo. The dams, both in its construction and in operation, cause some environmental impacts, most of them negatives, for example, the flooding in regions before not flooded, deviation of the river’s course, among others, bringing harm to flora and fauna of these environments. As a way to compensating these damages, the CESP has acquired a region that was influenced by Sérgio Motta Hydroelectric Plant Engineer, or Porto Primavera, and turned it into Reserva Particular do Patrimônio Natural Foz do Rio Aguapeí. By law it fits in a Conservation Unit, and thus should be contemplate for a management plan, ie, a multidisciplinary technical document which allows, simply, the practice of actions within and around in a sustainably way. This work aimed at developing a land cover map of the reserve for this plan can be made and executed more efficiently. Initially, the project included field visits and meetings with members of the CESP to be specified classes contained on the map. Later, we ran different types of classifications of multispectral images (TM / Landsat 5)... (Complete abstract click electronic access below)