Toxicidade de imidaclopride e tiametoxam a larvas de Chrysoperia externa (Neuroptera: Chrysopidae) em condições de casa-de-vegetação.

Objetivou-se no presente trabalho mensurar o impacto dos inseticidas imidaclopride e tiametoxam, utilizados no controle da mosca-branca Bemisia tabaci tiótipo B (Hemiptera: Aleyrodidae) na cultura do tomateiro, sobre larvas de primeiro, segundo e terceiro instares de Chrysoperla externa, bem como sobre as fases subsequentes de seu desenvolvimento e sobre a reprodução de adultos oriundos de larvas tratadas.Resumo PDF 1736-

Seletividade de espiromesifeno a adultos de Chrysoperla externa (Neuroptera: Chrysopidae) em condições de laboratório.

Visando mensurar os efeitos dos inseticidas clotianidina, diafentiurom, imidaclopride, espiromesifeno e tiametoxam, utilizados no controle da boca-branca na cultura do tomateiro, sobre adultos de Chrysoperia externa (Neuroptera: Chrysopidae), bioensaios foram realizados em condições de laboratório, utilizando-se metodologias padrão recomendadas pela IOBC.Resumo PDF 1756-

Resistência da mosca-branca Bemisia tabaci biótipo B (Hemiptera: Aleyrodidae) a inseticidas utilizados em tomateiro.

Resumo PDF 1736-

Toxicidade de inseticidas utilizados no tomateiro sobre larvas de terceiro instar de Chrysoperia externa (Neuroptera: Chrysopidae).

Objetivou-se com o presente estudo avaliar o impacto dos inseticidas clotianidina, diafentiurom, imidaclopride, espiromesifeno e tiametoxam sobre larvas de terceiro instar de C. externa, a fim de compatilizar os métodos biológico e quimíco no manejo de pragas no tomateiro.Resumo PDF 1756-2

Libidibia ferrea loaded in bacterial nanocellulose: evaluation of antimicrobial activity and wound care / Libidibia ferrea loaded in bacterial nanocellulose: evaluation of antimicrobial activity and wound care

The effects of Bacterial Nanocellulose (BNC) loaded with Libidibia ferrea (Lf) hydroalcoholic extract were investigated on the healing process of burn in diabetic and non-diabetic animals. In vivo assay was performed with 36 male rats, with streptozotocin-induced diabetes and burns induced by contact. Animals were divided into Nd-BNC (Non-diabetic + Bacterial nanocellulose membranes); Nd-BNC-Lf (Non-diabetic + Bacterial nanocellulose membranes + Libidibia ferrea); D-BNC (Diabetic + Bacterial nanocellulose membranes); D-BNC-Lf (Diabetic + Bacterial nanocellulose membranes + Libidibia ferrea). Wounds were evaluated for 28 days histologically. Lf extract and BNC-Lf extract showed antimicrobial activity against Staphylococcus aureus, Pseudomonas aeruginosa and Escherichia coli. The severe degree of infection, granulation and inflammation observed after 14 days in diabetic rats (exposed or not to Lf extract), disappeared after 21 days. On the 28th day, there was no histological difference among the groups. BNC-Lf extract demonstrated to have antimicrobial activity, however as an wound dressing, both BNC or BNC-Lf extract were effective in the healing of second-degree burn wounds

Pacifier Stiffness Alters the Dynamics of the Suck Central Pattern Generator

Variation in pacifier stiffness on non-nutritive suck (NNS) dynamics was examined among infants born prematurely with a history of respiratory distress syndrome. Three types of silicone pacifiers used in the NICU were tested for stiffness, revealing the Super Soothie™ nipple is 7 times stiffer than the Wee™ or Soothie™ pacifiers even though shape and displaced volume are identical. Suck dynamics among 20 preterm infants were subsequently sampled using the Soothie™ and Super Soothie™ pacifiers during follow-up at approximately 3 months of age. ANOVA revealed significant differences in NNS cycles/min, NNS amplitude, NNS cycles/burst, and NNS cycle periods as a function of pacifier stiffness. Infants modify the spatiotemporal output of their suck central pattern generator when presented with pacifiers with significantly different mechanical properties. Infants show a non-preference to suck due to high stiffness in the selected pacifier. Therefore, excessive pacifier stiffness may decrease ororhythmic patterning and impact feeding outcomes

Impacts of the Last Glacial Cycle on ground surface temperature reconstructions over the last millennium

Borehole temperature profiles provide robust estimates of past ground surface temperature changes, in agreement with meteorological data. Nevertheless, past climatic changes such as the Last Glacial Cycle (LGC) generated thermal effects in the subsurface that affect estimates of recent climatic change from geothermal data. We use an ensemble of ice sheet simulations spanning the last 120 ka to assess the impact of the Laurentide Ice Sheet on recent ground surface temperature histories reconstructed from borehole temperature profiles over North America. When the thermal remnants of the LGC are removed, we find larger amounts of subsurface heat storage (2.8 times) and an increased warming of the ground surface over North America by 0.75 K, both relative to uncorrected borehole estimates