562 schoolchildren from Oporto were patch tested with the standard series of the Portuguese Contact Dermatitis Group (GPEDC). 13.3% of the children had positive reactions, the most common being to neomycin, thimerosal, para-tertiary-butylphenol-formaldehyde (PTBPF) resin and fragrance-mix. Thus contact allergy in children seems not to be as unusual as previously thought.
RESUMO -O objetivo da presente pesquisa foi verificar a eficácia do herbicida tebuthiuron no controle de plantas daninhas quando associadas à presença de palha de cana-de-açúcar. Para isso, conduziu-se um experimento em condições controladas em casa de vegetação, utilizando-se vasos com quatro repetições, onde, além das testemunhas com e sem palha, o tebuthiuron foi aplicado em diferentes situações: sobre 5 t de palha ha ; sobre o solo sem cobertura de palha; e com ou sem simulação de distintas quantidades de chuva aplicada antes ou após a aplicação do produto. A dose de Combine 500 SC (tebuthiuron) aplicada foi de 1.000 g i.a. ha . As plantas daninhas presentes no experimento foram Brachiaria plantaginea, Brachiaria decumbens e Ipomoea grandifolia. Avaliou-se a porcentagem de controle das plantas daninhas aos 7, 14, 21, 28, 35, 42, 49 e 56 DAA nos tratamentos em que o tebuthiuron foi aplicado em pré-emergência e aos 3, 10, 17, 24, 31 e 38 DAA, quando o herbicida foi aplicado em pós-emergência; e a biomassa seca aos 56 ou 38 DAA. Verificou-se que, independentemente da planta daninha avaliada, os maiores índices de controle foram alcançados quando o tebuthiuron foi aplicado sobre a palha, simulandose em seguida precipitação correspondente a 2,5 ou 30 mm de chuva, e nos tratamentos em que o herbicida foi aplicado diretamente no solo desnudo ou recoberto com palha. Dessa forma, para I. grandifolia, B. plantaginea e B. decumbens, os índices mais elevados de controle foram alcançados quando o tebuthiuron atingiu o solo, tanto aplicado diretamente como quando lixiviado da palha pela chuva simulada após a aplicação.Palavras-chave: herbicida, lixiviação, cana-crua, eficácia. 7, 14, 21, 28, 35, 42, 49 and 56 days after application (DAA) when tebuthiuron was applied in and at 3, 10, 17, 24, 31 and 38 DAA when ABSTRACT -The objective of this work was to evaluate the effectiveness of tebuthiuron associated
ABOUT 6'" WORLD CONGRESS OF BIOMECHANICS The 61h World Congress of Biomechanics is hosled by Biomedical Engineering Sociely of Singapore (BES)logelher wilh lhe Global Enlerprise for Mlcremechanics and Molecular Mediclne (GEM4) and lhe Nalional Unlversily of Singapore (NUS), in conjunclion wilhlhe 141h Inlemalional Conferenee on Biomeehanleal Engineering (ICBME) and lhe 51h Asian Pacine Conlerence on Biomeehanies (APBiomech). Wilh over 2,000 delegales Irom ali over lhe World, espeeially Irem lhe Asia Paeinc region, lo atlend lhis congress, this Biomechanics conference explores a wide fleld such as ergan mechanlcs, tissue mechanlcs, cel! mechanics to molecular mechanics. AI lhe 61h World Congress 01 Biomechanles, aulhors would be presenllng lhe la'!lesl experimental studies, teehnologies and equlpment. Speclal emphasls will be plaeed on slale-of-!he-art teehnology and medicai applleations, lor example in areas 01 sports mediclne and crash injuries.
This paper aims to study the efficiency of two short-term progestagen (FGA vs. MAP) + eCG treatments in estrus synchronization and artificial insemination (AI) with fresh or chilled semen in Assaf ewes fertility rate. All ewes received a subcutaneous implant of exogenous melatonin 45 days before been treated with short-term progestagens + eCG. By June 1 st , ewes were divided in two groups: half was treated with an intravaginal sponge impregnated with 20 mg of FGA and the other half with an intravaginal sponge impregnated with 60 mg of MAP. Progestagen treatments lasted for 6 days. At sponge withdraw, all ewes were injected with 750 IU of eCG. Ovarian activity was assessed by plasmatic progesterone levels before and after progestagens + eCG treatment. Semen was collected by electro ejaculation and extended with Andromed ® or OviXcell ® . AI was performed 55 hours after eCG administration with fresh or chilled semen. During AI several factors were assessed: vagina mucosa color and lubrication, external cervical Os type, cervical mucous viscosity, semen deposition place and seminal cervix outflow. Semen was deposited as deep as possible without distress or trauma cervix mucosa. All Assaf ewes presented cyclic activity before progestagen + eCG treatments (2 nd fortnight of May).Short-term progestagen + eCG treatments were equally efficient (100.0%). About 76.5% of Assaf ewes were pregnant 41 days after AI. Fertility rate was influenced by external Os type, semen deposition place and seminal cervix outflow. However, this rate was not conditioned by vaginal color or lubrication, cervical mucus viscosity, semen preservation technic and semen extender.
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