“…CONCLUSION: We demonstrate the use of the software on a set of 500 scanned images, each containing multiple leaves, collected from a common garden experiment containing 116 clones of Populus tremula (European trembling aspen) that are being used for association mapping, as well as examples of leaves from other species. …”
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“…RESULTS: Silver birch lines expressing quaking aspen (Populus tremuloides L.) caffeate/5-hydroxyferulate O-methyltransferase (PtCOMT) under the 35S cauliflower mosaic virus (CaMV) promoter showed a reduction in the relative expression of a putative silver birch COMT (BpCOMT) gene and, consequently, a decrease in the lignin syringyl/guaiacyl composition ratio. …”
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“…Plants for the chemical analyses and feeding trials were harvested from the understory of control (ambient air), elevated CO(2) (560 µl CO(2) l(−1)), and elevated O(3) (ambient × 1.5) rings at the Aspen FACE (Free Air CO(2) Enrichment) site near Rhinelander, Wisconsin. …”
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“…BACKGROUND: We have developed genomic tools to allow the genus Populus (aspens and cottonwoods) to be exploited as a full-featured model for investigating fundamental aspects of tree biology. …”
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“…Antisense expression of PtFLA6 in the aspen hybrid clone Poplar davidiana×Poplar bolleana reduced the transcripts of PtFLA6 and its homologous genes. …”
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“…Probability of nest occurrence was strongly tied to densities of potential nest trees, which included open forests with very large (diameter at breast height, DBH, ≥57.5 cm) western larch (Larix occidentalis) trees in the Okanagan-East Kootenay Region, and very large ponderosa pine (Pinus ponderosa) and large (DBH 17.5–57.5 cm) trembling aspen (Populus tremuloides) trees in the Western Region. …”
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“…METHODS: The evaluation was performed under similar assumptions through simulation in Aspen Plus V7.3(®) software. Two end distillation systems (number of non-ideal stages between 70 and 80) were studied. …”
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“…The revised PSD model, with the long-term effects of interspecific competition accounted for, predicted that eastern hemlock (Tsuga canadensis), American beech (Fagus grandifolia), white birch (Betula papyrifera), red oak (Quercus rubra), sugar maple (Acer saccharum), and trembling aspen (Populus tremuloides) would experience a significant decline in their original distribution compared with balsam fir (Abies balsamea), black spruce (Picea mariana), red spruce (Picea rubens), red maple (Acer rubrum L.), and yellow birch (Betula alleghaniensis). …”
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“…The effect was much more pronounced in Chile, where logging operations removed critical nesting resources (large decaying trees), than in Canada, where decaying aspen Populus tremuloides were retained on site. …”
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“…To determine the influence of three common husbandry-associated factors that vary between institutions, groups of weanling mice were placed in either static or ventilated microisolator caging, with either aspen or paperchip bedding, and with one of three commonly used rodent chows, in a fully crossed study design. …”
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“…These results suggest that the mechanisms that influence leaf and root tannin levels in aspen are independent within individual stems, possibly due to different evolutionary pressures experienced by the different tissue types or in response to localized (roots vs. foliage) stressors. …”
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“…The process was modeled by using Aspen Plus process simulation software based on a capacity of 132 000 tons per annum of banana rachis (main raw material). …”
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“…Both designs were simulated using Aspen Plus to obtain mass and energy balances. A parametric sensitivity analysis was carried out to determine optimum operating conditions for solvent recovery and treatment efficiency. …”
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“…The ancestors of the two aspen diverged into P. davidiana and P. tremula species approximately 3.60 million years ago (Mya), which was in accordance with the rapid uplift of Qinghai–Tibet Plateau (QTP) around the Miocene/Pliocene boundary. …”
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“…This information is an essential prerequisite for carrying out process simulations of natural gas sweetening plants using ASPEN PLUS. The simulation results for the proposed DES were compared to those of monoethylene glycol (MEG). …”
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“…We characterized the genetic architecture of leaf shape variation in Eurasian aspen (Populus tremula L.) by performing genome‐wide association study (GWAS) for physiognomy traits. …”
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“…The objective of this study is to construct separate 5-star ratings for survey and complaint deficiencies, and to compare them to CMS’ 5-star rating for health deficiencies. Using CASPER and ASPEN Complaints/Incident Tracking System for all NHs in 2017 (N=15,373), we calculated the 5-star rating for health deficiencies as reported by CMS, and then decompose CMS’ rating into separate 5-star ratings for survey and complaint deficiencies. …”
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“…The forests can be divided into boardleaf forests dominated by birch (Betula platyphylla) or aspen (Populus davidiana) and coniferous forests dominated by larch (Larix gmelinii) or pine (Pinus sylvestris var. mongolica). …”
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