Bti 2012

Toxicity and Affecting Factors of Bacillus thuringiensis var. Israelensis on Chironomus kiiensis Larvae

Abstract Bacillus thuringiensis var. israelensis (Bti) is a suitable agent for controlling Chironomus kiiensis, a major pest polluting water. In this study, laboratory bioassays were used to study toxicity and affecting factors of Bti on C. kiiensis larvae. Tests were conducted using three commercial Bti formulations (oil miscible suspension, 1,200 ITU/mL; wettable power, 1,200 ITU/mg; technica...

Bti 2012

Using the Bio-Insecticide Bacillus thuringiensis israelensis in Mosquito Control

Mosquito control is a major public health concern, as mosquitoes transmit many severe human diseases such as malaria, filariasis, dengue, yellow fever, West Nile virus and the chikungunya virus. These diseases represent a major health threat and economic burden in disease-endemic countries, and are currently in expansion due to increased worldwide exchanges, urbanization, and global warming. Th...

Optimization of medium composition for the production of mosquitocidal toxins from Bacillus thuringiensis subsp. israelensis.

Optimization of chicken feather (CF) based culture medium for the production of Bacillus thuringiensis subsp. israelensis (Bti) biomass in combination with the agro industrial by-product (coconut cake, CC) and manganese chloride (MnCl2) has been evaluated. The biomass yield of Bti spore/crystal toxin was highest (12.06 g/L) from the test medium (CF+CC+MnCl2) compared to the reference medium (Lu...

GNOMO: Greater-than-NOMinal Vdd operation for BTI mitigation

This paper presents a novel scheme for mitigating delay degradations in digital circuits due to bias temperature instability (BTI). The method works in two alternating phases. In the first, a greaterthan-nominal supply voltage, Vdd,g is used, which causes a task to complete more quickly but causes greater aging than the nominal supply voltage, Vdd,n. In the second, the circuit is power-gated, e...