We used an existing analytical model of stemwood growth in relation to nitrogen supply, which we describe in an accompanying paper, to examine the long-term effects of harvesting and fire on tree growth. Our analysis takes into account the balance between nitrogen additions from deposition, fixation, and fertilizer applications, and nitrogen losses from stemwood harvesting, regeneration burning...

Abstract The subject of this study was to evaluate the visible crop losses during mechanized harvesting grapes, assess impacts changes in machine parameters and thus look for possibility reducing when utilizing method harvesting. A comparison with amount arising from manual also monitored. research results indicated average total 1.10–5.62% harvested monitoring revealed occurring area columns s...

wheat is one of the most important food staff in consumption pattern of each country. more than 50 percent of energy is provided by bread in the developing countries. the aim of this study was measuring wheat losses during pre-harvest and harvest stages in chaharmahal and bakhtiari province of iran in year 2013. wheat losses at harvest stages were measured to wheat varieties in 2 levels of omid...

Dielectric elastomer generators (DEGs) are attractive candidates for harvesting electrical energy from mechanical work since they comprise relatively few moving parts and large elastomer sheets can be mass produced. Successfully demonstrations of the DEG prototypes have been reported from a diverse of energy sources, including ocean waves, wind, flowing water and human movement. The energy dens...

The results of these studies showed that mechanical loader and combine harvester performance varied considerably depending on the type of machine, cane yield, and crop and field conditions. Instantaneous loading rates and mechanical harvesting pour rates varied between 60 and 100 tons per hour. Infield cane losses were significantly lower where the cane was manually cut and mechanically loaded ...

On the basis of conformal transformation, a general strategy is proposed to design plasmonic nanostructures capable of an efficient harvesting of light over a broadband spectrum. The surface plasmon modes propagate toward the singularity of these structures where the group velocity vanishes and energy accumulates. A considerable field enhancement and confinement is thus expected. Radiation loss...