Age-related variation in genetic control of height growth in Douglas-fir

1972 ◽  
Vol 42 (4) ◽  
pp. 151-159 ◽  
Author(s):  
G. Namkoong ◽  
R. A. Usanis ◽  
R. R. Silen
Keyword(s):  
Genetic Control ◽  
Height Growth ◽  
Douglas Fir ◽  
Related Variation ◽  
Age Related

Age-Related Variation in Copulations of Male Northern Muriquis (Brachyteles hypoxanthus)

2005 ◽  
Vol 76 (1) ◽  
pp. 33-36 ◽  
Author(s):  
Carla B. Possamai ◽  
Robert J. Young ◽  
Regiane C.R. de Oliveira ◽  
Sergio L. Mendes ◽  
Karen B. Strier
Keyword(s):  
Related Variation ◽  
Age Related

scholarly journals Age-related variation in mobility independence among wheelchair users with spinal cord injury: A cross-sectional study

2016 ◽  
Vol 39 (2) ◽  
pp. 180-189 ◽  
Author(s):  
Timo Hinrichs ◽  
Veronika Lay ◽  
Ursina Arnet ◽  
Inge Eriks-Hoogland ◽  
Hans Georg Koch ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Wheelchair Users ◽  
Related Variation ◽  
Age Related ◽  
Cord Injury

scholarly journals An examination of the genetic control of Douglas-fir vascular tissue phytochemicals: Implications for black bear foraging

1999 ◽  
Vol 123 (2-3) ◽  
pp. 245-251 ◽  
Author(s):  
Bruce A. Kimball ◽  
G.R. Johnson ◽  
Dale L. Nolte ◽  
Doreen L. Griffin
Keyword(s):  
Genetic Control ◽  
Vascular Tissue ◽  
Black Bear ◽  
Douglas Fir

scholarly journals Sex- and age-related variation in metal content of penguin feathers

Ecotoxicology ◽  
2015 ◽  
Vol 25 (2) ◽  
pp. 431-438 ◽  
Author(s):  
Stefania Squadrone ◽  
Maria Cesarina Abete ◽  
Paola Brizio ◽  
Gabriella Monaco ◽  
Silvia Colussi ◽  
...  
Keyword(s):  
Metal Content ◽  
Related Variation ◽  
Age Related

scholarly journals Age Related Variation in Feminine Handwriting among Population Groups of Delhi, India

2018 ◽  
Vol 6 (1) ◽  
pp. 1-6
Author(s):  
Vijit Deepani ◽  
A.K Kapoor ◽  
Monika Saini
Keyword(s):  
Significant Variation ◽  
Research Result ◽  
Age Groups ◽  
Population Group ◽  
Population Groups ◽  
Related Variation ◽  
Age Related ◽  
Significant Difference ◽  
Micro Features ◽  
Lower Loop

Background: Handwriting is a uniquely human trait which progresses and evolves during lifetime and declines with age. The aim of the present paper is to assess variation in handwriting features with age among female writers of select population groups of Delhi, India (for roman script). Method: A total of 405 handwritten samples were obtained from female (n=405) writers in the age range of 14-60 years. Writers were stratified into three age groups (≤ 18 years, 19-38 years and ≥39 years) in accordance to population group. Macro- and micro-features of handwriting were extracted from the scanned handwritten samples. These features were subjected to statistical analysis in the objective driven research. Result: The mean difference among age groups for pen pressure, height of handwriting and handwriting connectivity was statistically significant (p < 0.001). Significant difference was also observed among age groups for all micro-features of handwriting selected in the present study, namely, nature of ‘i’ – dot (p < 0.001), nature of lower loop of ‘g’ (p < 0.01); nature of‘d’- stem (p < 0.01), nature of ‘m’-hump (p < 0.05) and ‘r’- shape (p < 0.001). Conclusion: The present study showed that there was a significant variation in both macro- and micro- features of handwriting with respect to age of the writer. Pen pressure, height of handwriting and handwriting connectivity were prominent macro-features that addressed age related variation in handwriting. In addition, significant variation was observed among age groups for all micro-features of handwriting selected in the present study. The present study has immense forensic significance as it can assist to analyze age of the writer on the basis of handwriting characteristics.

scholarly journals Soil texture and other site-level factors differentially affect growth of Scotch broom (Cytisus scoparius) and Douglas-fir (Pseudotsuga menziesii) seedlings in the western Pacific Northwest

2021 ◽  
Author(s):  
David Carter ◽  
Robert A. Slesak ◽  
Timothy B. Harrington ◽  
Anthony W. D’Amato
Keyword(s):  
Pacific Northwest ◽  
Pseudotsuga Menziesii ◽  
Height Growth ◽  
Douglas Fir ◽  
Western Pacific ◽  
Limiting Factor ◽  
Cytisus Scoparius ◽  
Invasive Shrub ◽  
Scotch Broom ◽  
The Western Pacific

The invasive shrub Scotch broom (Cytisus scoparius (L.) Link) is a pervasive threat to regenerating Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco var. menziesii) stands in the Pacific Northwest, USA. Field observations indicate that the susceptibility of areas to Scotch broom invasion and dominance can vary by site. We selected ten sites throughout the western Pacific Northwest that spanned a gradient of soil textures and other factors to test the site-specific susceptibility of Douglas-fir to overtopping by Scotch broom. We expected to find that the ability of Scotch broom to dominate a site was mediated by site-level factors, particularly those influencing soil water – the most limiting factor to growth in the region. We found Scotch broom and Douglas-fir were inversely affected by site-level factors. In general, Douglas-fir absolute height growth rates were more competitive with those of Scotch broom on fine-textured soils than on more coarsely textured soils. We also found Douglas-fir to have a more dramatic response to increasing down woody material than Scotch broom. Scotch broom height growth approached an asymptote at 3 m. Sites with fast-growing Douglas-fir were able to surpass this height six to seven years after planting and appear likely to avoid suppression by Scotch broom.

scholarly journals Demographic age-related variation in Circle of Willis completeness assessed by digital subtraction angiography

2020 ◽  
Vol 6 (1) ◽  
pp. 31 ◽  
Author(s):  
CiaránJ Powers ◽  
RyanG Eaton ◽  
VarunS Shah ◽  
David Dornbos III ◽  
OrelA Zaninovich ◽  
...  
Keyword(s):  
Digital Subtraction Angiography ◽  
Circle Of Willis ◽  
Digital Subtraction ◽  
Related Variation ◽  
Age Related
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