ZwittermicinA acts synergisticallywith the insecticidal activity ofBacillus thuringiensis subsp. kurstakiBerliner against gypsymoth (Lymantria dispar (L.)) larvae. The objective of this study was to assess the inßuence of insect source and diet on this synergy. Zwittermicin A increased the mortality caused by B. thuringiensis subsp. kurstaki in gypsy moths collected from four population sources...

Three Colorado potato beetle, Leptinotarsa decemlineata, populations, from Ardabil, Bostanabaad and Ajabshir, were collected from potato fields in East Azarbaijan and Ardabil provinces in Iran and assayed for resistance to endosulfan. Possible resistance mechanisms were investigated using synergism studies and biochemical assays. Laboratory tests showed that the Bostanabaad strain was 220 and 1...

This paper selects 6 gasoline detergent synergists and diesel that are mainstream in the market. The changes mass, volume, hardness, size surface morphology of main components engine fuel supply system after being immersed containing for 28 days were studied,and these compared with benchmark fuel. results show most have almost no corrosive effect on or close to reference fuel, but some a slight...

INTRODUCTION There have been few biomechanical studies that tried to investigate individual variations of human musculoskeletal parameters, e.g., moment of inertia or ratio of fascicle-tendon structure length. Additionally, many synergist muscles that have different moment arm one by one have often been analyzed as a single muscle. However, we need to pay more attention to musculoskeletal diffe...

Phosphomolybdic acid (PMA) as a synergist was added into polyurethane (PU) rigid foam with ammonium polyphosphate (APP) to improve its flame retardancy and thermal stability. The combustion performance of PU studied by limiting oxygen index (LOI), UL-94, cone calorimeter. degradation behavior determined thermogravimetric analysis (TG) infrared spectroscopy (TG-IR). Experimental results showed t...

The continued widespread use of malathion in Aedes aegypti control programs in Latin America has generated insecticide resistance to this chemical in Culex quinquefasciatus but not in Ae. aegypti. To determine the extent of this resistance, the susceptibility of Cx. quinquefasciatus and Ae. aegypti from several countries to malathion was evaluated. Bioassay results indicated that all Ae. aegypt...

To expose cortical involvement in age-related changes in motor performance, we compared steadiness (force fluctuations) and fatigability of submaximal isometric contractions with the ankle dorsiflexor muscles in older and young adults and with varying levels of cognitive demand imposed. Sixteen young (20.4 ± 2.1 year: 8 men, 9 women) and 17 older adults (68.8 ± 4.4 years: 9 men, 8 women) attend...