A 7-m tall white ash tree (Fraxinus americana Marsh.) was dissected, and hydraulic parameters of the xylem were determined by inducing a steady-state flow of water through the stem segments and monitoring volume and velocity flow rates. Leaf-specific conductivity (LSC) was highest in the main stem and lowest in some of the leaf-bearing lateral shoots. The LSC was higher in the main stem than in...

A method of estimating forest-fire fuel loads was developed using drones to collect information about the height and diameter-at-breast-height (DBH) individual trees. It conducted for forest fire prevention monitoring (Control, 20% thinned, 40% thinned area) located in Goseong-gun, Gangwon-do. Object-based images 3D-model red/green/blue band characteristics were superimposed select extract digi...

Deformation behaviour during loading and unloading is studied in compression of an aluminium plate with a high ratio between the diameter thickness by DLC coated die. A compressed becomes thinner after to larger reduction loading. The plastic deformation confirmed measuring increase unloading. optimum profile die crown approaches reverse shape elastic deflection flat at stroke end increasing th...

Theoretical tree crop ideotypes have long and narrow live crowns with a high total leaf area. This crown form allows more efficient exploitation of site resources, in part by physically occupying less growing space per unit area packing greater number trees into given Genetic selection for has been proposed as strategy maximizing productivity stands managed under intensive silviculture. The pri...

The objective of this study was to make preliminary investigations between accurately measured field biomasses and terrestrial laser scanning (TLS) measurements including tree crown and stem diameters. Stem and crown biomass were determined based on detailed field measurements of the individual tree stem, bark, branch and needles. At the tree level, field measurements were intensive and thus ma...

The present study aims to compare the allometry and wood density of Goupia glabra Aubl. (Goupiaceae) in two different terra-firme sites in Amazonian forest. A total of 65 trees ≥ 10 cm DBH was sampled in both sites, with 39 trees in Nova Olinda do Norte (NOlinda, near the Amazon River) and 29 trees in Apuí (near the southern edge of the Amazon forest). Except for the relationship between DBH (d...

INTRODUCTION Precise knowledge of the anatomy and development of the airways in the fetus is needed for advances in neonatal medicine. The aim of this study was to assess the morphometry of the larynx during fetal development. MATERIAL AND METHODS The study was performed on 47 human fetal larynges (27 male and 20 female) collected between the age of 13-27 weeks of intrauterine life according ...

Abstract The effective algorithms for calculating the theoretical profiles of gauge surfaces various bits have been developed, which reproduce such using spline functions with precision up to resolution graphic devices on modern computers. Execution profile surface close one (especially large-diameter displaced axes rolling cutters) can increase tool life by reducing loss diameter during bit pr...