Energy harvesting (EH) from Radio Frequency (RF) sources is considered a promising solution for future wireless technologies in terms of efficiency and battery lifetime, specially for applications that do not consume a lot of energy such as Internet of Things (IoT) devices. This paper investigates a multiband EH schemes under cognitive radio interweave framework. All secondary users are conside...

Minimizing pesticide use, preserving water, as well enhancing soil health are just a few of the sustainable farming techniques that must be carefully considered while growing grapes high calibre. These practices can help preserve environment and ensure longevity vineyard. However, it is difficult for farmers to find suitability its cultivate with quality. Thus this research aims evaluate fitnes...

A crop load estimation is important for efficient apple orchard management. This information is important for planning and assigning appropriate labor pool and equipment for harvesting and transportation of fruits from orchard to packing houses. Current machine vision-based techniques for crop load estimation have achieved only limited success. Two primary factors affecting the accuracy of such...

In view of the current situation low degree mechanized harvesting rape shoots, combined with study material characteristics core components harvester were designed and analyzed, a shoots was manufactured. The front-end cutter cuts stalks while clamping conveying device transports steers flexibly to achieve damage orderly harvesting. forward speed machine, belt gap selected as test factors, rate...

Nacrtak In Italy, short rotation forest has become very popular in recent years, with over 4,000 hectares already planted – almost exclusively with clone poplar. The study models the performance of modified forage harvesters on a range of short-rotation poplar plantations, identifies technical obstacles to the deployment of these machines and suggests solutions that may expand the capability of...

The chemical composition and the particle size distribution of 37 maize silages produced in north-west of Portugal were determined. Mean dry matter (DM), crude protein (CP), neutral detergent ®bre (NDF) and starch were 288 33, 81 9, 502 45 and 229 54 g kgÿ1 DM, respectively. Particle size was determined by manual separation of fresh silage into three fractions: material >30 mm in length; materi...

forest harvesting operations for extracting of forest products in these trails, causing extensive damage in a wide range of soil and its productivity every year, therefore it is necessary to research about degradation of soil properties should be down. the aim of this study was investigate changes in the skid trails soil physical characteristics due to wheeled cable skidder traffic by measuring...