نتایج جستجو برای: selective felling

تعداد نتایج: 199877  

Journal: :International Journal of Wood Culture 2021

Abstract Wood in Austria has been an indispensable source of energy, but also, a crucial building material. In the field dendroarchaeology timeline between raw material harvest and finalisation wooden construction is piece puzzle understanding history. This paper aims to provide overview on historical timber supply by examining felling debarking methods, as recorded old literature and, from vis...

Journal: :Proceedings. Biological sciences 2011
Theodore Garland Scott A Kelly Jessica L Malisch Erik M Kolb Robert M Hannon Brooke K Keeney Shana L Van Cleave Kevin M Middleton

The response to uniform selection may occur in alternate ways that result in similar performance. We tested for multiple adaptive solutions during artificial selection for high voluntary wheel running in laboratory mice. At generation 43, the four replicate high runner (HR) lines averaged 2.85-fold more revolutions per day as compared with four non-selected control (C) lines, and females ran 1....

2012
Evelyn R. Klein Sharon Lee Armstrong Elisa Shipon-Blum

Children with selective mutism (SM) display a failure to speak in select situations despite speaking when comfortable. The purpose of this study was to obtain valid assessments of receptive and expressive language in 33 children (ages 5 to 12) with SM. Because some children with SM will speak to parents but not a professional, another purpose was to explore the efficacy of employing parents to ...

Journal: :Actual directions of scientific researches of the XXI century: theory and practice 2020

Journal: :منظر 0

what to look for in abbas abad pool? a lake in middle of the forest on the mountain heights with an encircled building with waters and a garden ashore? why are the trees cut and used to build a garden? and what is the purpose of placing a lake on a dominant and deep valley over the khazar sea. today, green trees are grown in abbas abad garden and no sign of landscaping or water features can be ...

2012
Joakim Hjältén Fredrik Stenbacka Roger B. Pettersson Heloise Gibb Therese Johansson Kjell Danell John P. Ball Jacek Hilszczański

Restoration of habitats is critically important in preventing full realization of the extinction debt owed as a result of anthropogenic habitat destruction. Although much emphasis has been placed on macrohabitats, suitable microhabitats are also vital for the survival of most species. The aim of this large-scale field experiment was to evaluate the relative importance of manipulated microhabita...

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