Results 11 to 20 of about 7,795 (232)

Modeling and characteristic analysis of roadway profile under the influence of multiple factors

open access: yesScientific Reports, 2022
Considering that the movement trajectory of roadheader cutting head directly affects the surface morphology characteristics of roadway forming, the creation mechanism of roadway contour obtained by cutting head cutting roadway is analyzed.
Zhixiang Liu   +4 more
doaj   +1 more source

Numerical Simulation of Microscale Oblique Droplet Impact on Liquid Film

open access: yesAerospace, 2023
The oblique impact of microscale water droplets on liquid film is numerically investigated. Two-phase flow problems are simulated using three-dimensional incompressible Navier-Stokes equations, and the level-set method is employed for capturing the gas ...
Yan Cao, Jingxin Wang, Chunling Zhu
doaj   +1 more source

Modeling conifer tree crown radius and estimating canopy cover

open access: yesForest Ecology and Management, 2000
Models of tree crown radius were developed for several conifer species of California. Typical forest inventory variables (DBH, height, height-to-crown base, crown class, basal area per hectare, and trees per hectare) were considered as independent variables in model development. Models were fitted using both ordinary and weighted least squares methods.
Gill, Samantha J.   +2 more
openaire   +3 more sources

Predicting Crown-width of Dominant Trees on Teak Plantation from Clonal Seed Orchards in Ngawi Forest Management Unit, East Java

open access: yesJurnal Ilmu Kehutanan, 2018
This study aims to determine the model of crown width development of the dominant teak tree planted using seeds from clonal seed orchards. The research was carried out in Ngawi Forest Management Unit on the good quality teak compartment having stands age
Ronggo Sadono
doaj   +1 more source

Study of droplet splashing on a liquid film with a tunable surface tension pseudopotential lattice Boltzmann method

open access: yesAIP Advances, 2020
A tunable surface tension pseudopotential lattice Boltzmann method (LBM) with an axisymmetric boundary is applied to study a droplet splashing on a thin film.
Hao Yuan   +5 more
doaj   +1 more source

Model Tajuk Jati (Tectona Grandis L.f) dari Berbagai Famili pada Uji Keturunan Umur 9 Tahun

open access: yesJurnal Ilmu Kehutanan, 2008
Crown Model on Several Family of   9 years old  of Teak (Tectona grandis L.f) Progeny Trial Crown plays an important role in regulating the rate of tree growth through the photosynthesis process.
Jany T. Raharjo, Ronggo Sadono
doaj   +1 more source

Clinical study of the minimally invasive extraction of impacted supernumerary teeth in 85 cases

open access: yes口腔疾病防治, 2020
Objective To explore the surgical design and surgical Methods for the minimally invasive extraction of embedded supernumerary teeth and to provide a reference for clinical practice.
SONG Zhifeng, FEI Fei
doaj   +1 more source

ALGORITHM FOR THE AUTOMATIC ESTIMATION OF AGRICULTURAL TREE GEOMETRIC PARAMETERS USING AIRBORNE LASER SCANNING DATA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
The estimation of dendrometric parameters has become an important issue for the agricultural planning and management. Since the classical field measurements are time consuming and inefficient, Airborne Laser Scanning (ALS) data can be used for this ...
E. Hadaś, A. Borkowski, J. Estornell
doaj   +1 more source

Allometric scaling and allocation patterns: Implications for predicting productivity across plant communities

open access: yesFrontiers in Forests and Global Change, 2023
As the application of allometry continues to expand, the variability in the allometry exponent has generated a great deal of debate in forest ecology. Some studies have reported counterintuitive values of the exponent, but the sources of such values have
Gudeta W. Sileshi   +2 more
doaj   +1 more source

Effect of Crowning Radius on Rolling Contact Fatigue Strength of Case-Hardened Steel Roller.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1998
This paper deals with the effect of crowning radius on the rolling contact fatigue strength of case-hardened steel roller. Three types of the rollers, which had crowning radii of 30 mm, 15 mm and 7.5 mm, were fatigue-tested under a sliding rolling contact condition. The rolling contact fatigue strength of the roller became higher as the crowning radius
Akira YOSHIDA   +4 more
openaire   +2 more sources

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