نتایج جستجو برای: norway maple
تعداد نتایج: 26135 فیلتر نتایج به سال:
In this paper, we will discuss how to use Maple programming to empirically investigate the asymptotic normality of the generalized Hirsch citation index (alias size of Durfeee rectangle) with respect to the uniform distribution on the sample space of integer partitions of n. All the results of this article were obtained using Maple programs, and is available at: http://math.rutgers.edu/ hbl15/e...
The aim of this paper is to map selected tools offered the Maple system and user supports provided by the Canadian company Maplesoft Inc. for professional and modern implementation in economics, resp. finances. These are mainly fields of scientific computing, in the quantitative modeling, graphics visualizations and interactive simulations, both the direct using of built-in elements and the com...
1 In forest communities, species coexistence can be favoured by disturbance-related variations in light regime coupled with rank reversal in species performance. The objective of this study was to determine if a major canopy disturbance, resulting from an ice storm, would favour the coexistence of sugar maple ( Acer saccharum ) and beech ( Fagus grandifolia ) in an old-growth forest located nea...
A plastic tubing system operated under vacuum is usually used to collect sap from maple trees during spring time to produce maple syrup. This system is commonly sanitized with isopropyl alcohol (IPA) to remove microbial contamination colonizing the system during the sugar season. Questions have been raised whether IPA would contribute to the leaching of plastic residues in maple sap and syrup c...
Contemporary and next-generation commercial and defense-related platforms offer countless applications for thin-film polymer coatings, including the areas of microelectronics, optoelectronics, and miniature chemical and biological sensors. In many cases, the compositional and structural complexity, and the anisotropy of the material properties preclude the processing of many of these polymers b...
Xylary fluid pH and reduction potentials were measured on silver maple (Acer saccharinum L.) grown under Fe and pH stress. Although pH and reduction potential (millivolt/59.2) varied significantly in the nutrient solution, xylary pH and reduction potential remained constant. It was concluded that changes in the pH and reduction potential in the xylary fluid of silver maple are not responsible f...
Tiny leaf-mining jewel beetle Trachys minutus (Linnaeus, 1758) (Coleoptera: Buprestidae: Trachysini), being a species with wide food specialization and distributed throughout the Palearctic, causes periodic outbreaks in linden plantations. Larvae of tiny mine leaves feed on their tissues, adults crown trees. Up-to-date information obtained during monitoring T. number from end May to beginning S...
The article presents the quantitative and qualitative attributes of dead wood in forests dominated by Carpinus betulus L. Kaniv Nature Reserve. study was conducted 130–140-year natural common hornbeam on two permanent sample plots 0.24 ha each identifying measuring all components standing lying (fallen) wood. It found that detritus has an average volume 39.8 m3/ha consists trees (23.1%) fallen ...
Abstract Low mortality rates and slow growth differentiate shade-tolerant from shade-intolerant species define the survival strategy of juvenile trees growing in deep shade. While radial stem has been widely used to explain trees, leaf area ratio (LAR), known be a key component shade tolerance, neglected so far. We assessed effects LAR, tree height on time age-specific rate Fagus sylvatica L. (...
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