An efficient wood harvesting activity aims to fully recover wood as a measure to increase the profit, but safety prescriptions should be obeyed each time when harvesting operations are performed. A study was carried out in three forest compartments in order to determine whether the actual tree felling procedures match the recommended ones and, if not, to compare how the used practices may affec...

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...

Production agriculture such as harvesting in oil palm plantation has been frequently associated with MSD and significant loss of productivities. This study tends to evaluate from the viewpoint of health, the association between self-reported prevalence of musculoskeletal disorders and productivities; the impact of musculoskeletal disorders on productivity. A cross-sectional study was conducted ...

In the major peripheral plant light-harvesting complex LHCII, excitation energy is transferred between chlorophylls along an energetic cascade before it is transmitted further into the photosynthetic assembly to be converted into chemical energy. The efficiency of these energy transfer processes involves a complicated interplay of pigment-protein structural reorganization and protein dynamic di...

to determine the effects of pre-harvest salicylic acid (sa) treatments on postharvest life and quality of apricot fruits, four different concentrations (one, 1.5, three and 4.5 mm) were applied six days before harvesting of apricot fruits cv. ‘shamlou’. fruits harvested at commercial maturity stage and stored at 2ºc with 90 percent rh on the same day for a period of three weeks. the fruit was e...

After enrichment by a tetracycline suicide under conditions nonpermissive for the growth of mutants defective in photosynthesis, colonies were screened for enhanced fluorescence in near-infrared light by using high-speed infrared photography. Twenty mutants were isolated, and the chromatophore membranes were analyzed by a new, rapid microprocedure that revealed many different phenotypes among t...

We obtain solutions of M coupled nonlinear Schrodinger equations that describe multisoliton complexes (MCs) on a background. We present explicit multiparameter families of solutions and numerical simulations, demonstrating specific features of MCs and their collisions. It is shown, in particular, that a MC on a background can have a complicated intensity profile due to a nonlinear superposition...

systems in different industries (Blanchard and Fabrycky, 1-981; Hoekstra, 1975; Semenzato, 1995) and it was conReducing the between the harvesting and crushing of cluded that simulation modelling was the most appropriate for sugarcane can result in substantial reductions in the loss of the situation of sugarcane harvesting and transport and hence recoverable sugar caused by cane deterioration. ...