Eficiência de vestimentas hidrorrepelentes novas na proteção do tratorista em pulverizações de agrotóxicos em goiaba com o turbopulverizador

Os objetivos do trabalho foram: quantificar as exposições dérmicas e respiratórias potenciais proporcionadas ao tratorista em pulverizações de agrotóxicos, na cultura de goiaba, com o turbopulverizador; avaliar a eficiência de duas vestimentas de proteção individual; avaliar a segurança e classificar estas condições de trabalho em seguras ou inseguras para cada agrotóxico considerado. A exposição dérmica potencial proporcionada ao tratorista pela condição de trabalho foi de 3.807,3 mL de calda/7h. A eficiência do conjunto de proteção individual Agro Light foi de 96,7 %, e a do Azeredo, 96,2 %. A exposição dérmica potencial nas regiões do corpo mais expostas do tratorista à pulverização, em ordem decrescente, foram os pés, os braços, as coxas+pernas-frente e o tronco-atrás. A exposição dérmica não-controlada pelos conjuntos de proteção individual foi igualmente distribuída em todas as regiões do corpo do tratorista devido aos controles das exposições dérmicas que proporcionaram às regiões mais expostas do corpo. Foram classificadas como seguras as pulverizações de três dos 17 agrotóxicos considerados e sete com o uso das vestimentas de proteção individual. As demais foram classificadas como inseguras.

Aplicação da calorimetria exploratória diferencial (dsc) na caracterização térmica do acetato de dexametazona, excipientes e do creme de dexametazona

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

Segurança das condições de trabalho de tratorista em aplicações de herbicidas em soja e amendoim e eficiência de equipamentos de proteção individual

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

Capacidade de retenção de barreiras de proteção produzidas com solo arenoso estabilizado quimicamente

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

Diagnóstico diferencial da fobia social: Uma revisâo

Social phobia is a common mental disorder that can cause considerable distress and impairment in functioning and quality of life but it is still an underdiagnosed and undertreated disorder. The differential diagnosis is not always simple. because its clinical features overlap with many other mental and non-mental disorders characterized by social avoidance. The aim of this study was to review the literature and discuss the differential diagnosis of social phobia with the following conditions. normal social anxiety (shyness), depressive disorders, alcoholism, body dysmorphic disorder, panic disorder and agoraphobia, simple phobias, generalized anxiety disorder, obsessive-compulsive disorder, post-traumatic stress disorder, delusional disorders and avoidant and schizoid personality disorders. A Medline and Lilacs search was conducted between 1990 and 2002, using the key words social phobia, social anxiety disorder, diagnosis and defferential diagnosis. The accurate diagnosis is very important for the appropriate treatment approach.

Eficiência de máscaras cirúrgicas como equipamento de proteção respiratória contra aerossóis bacterianos

The use of masks is generally accepted as a means of protecting the individual against microbial pathogens that might be inhaled in unhealthy environments. The objective of this study was to evaluate the efficiency of disposable surgical masks sold in Brazil, against coliforms in aerosols emitted by the aerators of a sanitary sewage treatment station. The filtration efficiency varied from 50.9% to 99.9% for 6 masks from different sources.

Proteção miocárdica ao coração hipertrofiado: O eterno desafio

The myocardial protection allowed great advance in cardiac surgery, decreasing the mortality and making more feasible complex surgeries. Latterly, the patient population elected for cardiac procedures has been changing towards elderly patients with ventricular function depressed and myocardial hypertrophy. The myocardial hypertrophy condition represents a great challenge since the beginning of the cardiac surgery. Several techniques have been described to protect the myocardial hypertrophy, however with no satisfactory results. In this manuscript we present the state of the art technique of myocardial protection.

Neurorrafia do ramo bucal dorsal do nervo facial em coelhos com proteção de segmento intestinal alógeno

18 rabbits, New Zealand, males, adults were used for clinical and histological evaluation of repair dorsal buccal branch of facial nerve after 15, 30 and 60 days postoperatively (PO). The animals were divided into two groups for transection and 10-0 nylon monofilament epineural suture of buccal branch. In animals in Group I, the nerve was coated with protection of jejunum allograft preserved in glycerin 98% and in group II was applied epineural suture. Both groups occurred the return of movement of the upper lip from the eighth week. There was infiltrated cellular and giant cells with fibrosis unsystematic and collagen fibers of the allograft jejunum joing to the connective tissue. At 15 and 30 days of PO, the distal nerve stumps of both groups were found with degeneration wallerian and in 60 days, regenerated fibers. The repair of the dorsal buccal branch of facial nerve with the allograft wasn't significantly different between the control rabbits as to the assessment of histological and functional recovery.

Avaliação da liberação de íon fluoreto de cimentos ionoméricos antes e após a recarga e com proteção da superfície

Objective: To evaluate fluoride ion release from two anhydrous glass ionomer cements (GICs) and two resin-modified GICs (RMGICs) before and after recharge with 2% neutral sodium fluoride for 4 min and after surface protection of the Maxxion R GIC with an adhesive system, a cavity varnish and a colorless nail polish. Method: A stainless steel 2x6 mm matrix was used for fabricating 5 specimens of each material, which were immersed in 5 mL of deionized water, renewed every 24 h. Measurements with a potentiometer were performed on days 1, 2, 9 and 17, in the 1st and 2nd phases, and the specimens were buffered with a TISAB III solution. In the 2nd phase, the specimens were subjected to recharge and immersed again in 5 mL of deionized water. In the 3rd phase, the GIC surfaces were protected and readings were made at 5 min, 24 h, 48 h and 72 h. Tukey's post-hoc and Student's t tests were used for statistical analyses (p<0.05). Results: There was statistically significant difference in the comparison between the 1st and 2nd phases for all materials, except at day 2 for Vidrion R and VitroFil LC. In the 3rd phase, it was observed that for all materials, comparison of the first 5 min with the other times revealed statistically significant differences among the means of fluoride ion release. In the comparison with the other times, both the varnish and the colorless nail polish presented statistically significant difference between 24 and 48 h as well as between 24 and 72 h. Conclusion: The anhydrous GICs were more effective in fluoride ion release and recharge compared with the RMGICs. Maxxion R presented a homogeneous and statistically significant behavior in both phases. All materials for surface protection were efficient and the colorless nail polish had the best behavior.

Rendimento e qualidade de melancia cultivada sob proteção de agrotêxtil combinado com mulching plástico

The ground cover is an agricultural practice that is designed mainly to control weeds, while the nonwoven prevents the attack of pests. The objective of this study was to evaluate the yield and fruit quality of watermelon grown under nonwoven textile protection combined with plastic mulching. The experiment was conducted at the WG Fruits Company, Baraúna, RN. A randomized block design was used in a factorial 3 x 3 + 1 with four replications, and 36 plants per plot, with the first factor of color of plastic used in mulching (black, silver and white) and the second factor nonwoven textile with different times of use (first and third crop nonwoven under textile and without nonwoven) and an absolute control (no mulching and without nonwoven). The production variables evaluated were: yield (commercial, noncommercial, and total fruit yield), and fruit quality (soluble solids - SS, titratable acidity - TA and SS/TA). The use of mulching and protection of plants with nonwoven textile provided a higher yield of watermelon fruits in relation to bare soil with and without nonwoven textile protection. Fruit quality was not affected by the use of mulching and nonwoven.

Utilização de índices de vegetação para estimativa da proteção do solo pela cobertura vegetal: uma contribuição para o uso da equação universal das perdas de solo

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Análise do potencial de impacto no meio ambiente como ferramenta para educação e proteção ambiental em pesqueiros

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Mini-inversores para aproveitamento de energia fotovoltaica, com técnicas de MPPT, sincronismo e conexão com a rede de CA em BT, proteção de ilhamento, gerenciamento da energia e da operação

Pós-graduação em Engenharia Elétrica - FEIS