The scope of this paper is to describe the work of manual sugarcane harvesters, assessing the nutritional behavior and body composition between the beginning and the end of the harvest. A descriptive longitudinal study was made of harvesters in Piracicaba, São Paulo, Brazil, who answered a socio-demographic questionnaire and authorized measurement of Body Mass Index, Body Fat Percentage and Arm...

Civil and Environmental Engineering) Control of Vibratory Energy Harvesters in the Presence of Nonlinearities and Power-Flow Constraints by Ian L. Cassidy Department of Civil and Environmental Engineering Duke University

Labor efficiency is all the efforts made by each member in balancing amount of labor with production produced. The purpose this study was to determine oil palm harvesters at PT ASN Kebun Ujong Lamie, Nagan Raya Regency. This uses a quantitative research method multiple linear regression analysis method. sampling technique used purposive sampling. sample amounted 19 respondents. results showed t...

Beginning with a short historical sketch, electrodynamic energy harvesters with focus on vibration generators and volumes below 1 dm are reviewed. The current challenges to generate up to several milliwatts of power from practically relevant flows and vibrations are addressed, and the variety of available solutions is sketched. Sixty-seven different harvester concepts from more than 130 publica...

Efficient mechanical energy harvesters enable various wearable devices and auxiliary energy supply. Here we report a novel class of mechanical energy harvesters via stress-voltage coupling in electrochemically alloyed electrodes. The device consists of two identical Li-alloyed Si as electrodes, separated by electrolyte-soaked polymer membranes. Bending-induced asymmetric stresses generate chemi...

Agricultural workers are exposed to various risks, including chemical agents, noise, and many other factors. One of the most characteristic and least known risk factors is constituted by the microclimatic conditions in the different phases of work (in field, in greenhouse, etc). A typical condition is thermal stress due to high temperatures during harvesting operations in open fields or in gree...