March 2014

Regional sustainability assessment and its sensitivity analysis based on ecological footprint model: A case study of Xingguo County in China

Based on the Ecological Footprint Model, a Sustainability Index is put forward to measure the degree of regional sustainable development. Using correlation and sensitivity analysis, this study explored the level of sustainable development in the Xingguo County of China from 1996 to 2005, and revealed the driving factors of human activities on sustainable development. The results indicate that the...

Author(s): Xie, Hualin, Liu, Qu , Wang, Peng and Liu, Zhifei,

March 2014

Development of a device adapted to perform the torch gas tungsten arc welding (GTAW) hardfacing using alloys in powder form

This work was aimed at developing a device adapted to any gas tungsten arc welding (GTAW) torch, allows obtaining hard coatings by depositing alloys in powder form. For the purpose of verifying the feasibility of implementing this process, the results and parameters were compared with the plasma transferred arc (PTA) process. Due to good wear resistance was used as the substrate alloy SAE 1020 and alloy STELLITE 6...

Author(s): Moselli, Paulo Cezar,  de Oliveira, Marcelo Falcão and Moreno, João Roberto Sartori 

March 2014

Toxicity and repellent effects of some botanical insecticides on the egg-larval parasitoid Chelonus oculator Panzer (Hymenoptera: Braconidae)

Chelonus oculator Panzer is an egg-larval parasitoid of the cotton leaf worm, Spodoptera littoralis (Boisd.) with a broad geographical area. Four botanical insecticides - azadirachtin (Neem Azal), pyrethrum (Spruzit Neu), capsaicin (Hotpepper wax) and d-Limonene (Orange guard) - were investigated regarding their side effects on C. oculator. Sub-lethal concentrations (LC25 and LC50) were determined for azadirachtin and...

Author(s): TUNCA, Hilal, KILINÇER, NeÅŸet and ÖZKAN, Cem