نتایج جستجو برای: stand volume reduction
تعداد نتایج: 817809 فیلتر نتایج به سال:
In this paper, 3-D laser scanning imaging system was introduced to forestry measurement for data collection. Then the paper discussed the method for stand volume measure and crown measure by the new equipment. There are three methods to measure the stand volumes: using cylindricals and truncated cones to model the tree stem, collecting the point clouds of the tree stem to produce the surface of...
Longleaf pine (Pinus palustris Mill.) is an important tree species of the southeast U.S. Currently there is no comprehensive stand-level growth and yield model for the species. The model system described here estimates site index (SI) if dominant height (Hdom) and stand age are known (inversely, the model can project Hdom at any given age if SI is known). The survival (N) equation was dependent...
Information about diameter distribution is used for predicting stand total volume, timber volume and stand growth for forest management planning. Often, the diameter distribution is obtained by predicting the parameters of some probability density function, using means and sums of tree characters as predictors. However, the results have not always been satisfactory: the predicted distributions ...
The construct of sarcopenia is still discussed with regard to best appropriate measures of muscle volume and muscle function. The aim of this post-hoc analysis of a cross-sectional experimental study was to investigate and describe the hierarchy of the association between thigh muscle volume and measurements of functional performance in older women. Thigh muscle volume of 68 independently livin...
Reusing the data collected during an epidemiological study is a complex task. This is mainly due to the frequent utilization of traditional storage supports, as well as specific formats and/or terminologies which can make it difficult to integrate the gathered data with data from other information resources. Using terms from the UMLS Metathesaurus, we have annotated the data collected during th...
[This retracts the article on p. 1265 in vol. 5, PMID: 26101696.].
Recent studies have shown that swimming is of relatively low asthmogenicity, even under conditions of high respiratory heat (and/or water) loss (RHL). It has been suggested that the horizontal body position may contribute to swimming's low asthmogenicity. We studied the effects of upright and prone body postures on pulmonary function following exercise (EIA) and after nonexercise hyperventilati...
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