The effect of environmental stress on the relationship of heterozygosity to growth rate in the coot clam Mulinia lateralis (Say)

1990 ◽  
Vol 135 (2) ◽  
pp. 109-116 ◽  
Author(s):  
Timothy M. Scott ◽  
Richard K. Koehn
Keyword(s):  
Growth Rate ◽  
Environmental Stress ◽  
Relationship Of ◽  
The Relationship

Association of collateral status and ischemic core growth in patients with acute ischemic stroke

Neurology ◽  
2020 ◽  
pp. 10.1212/WNL.0000000000011258
Author(s):  
Longting Lin ◽  
Jianhong Yang ◽  
Chushuang Chen ◽  
Huiqiao Tian ◽  
Andrew Bivard ◽  
...  
Keyword(s):  
Growth Rate ◽  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Ct Perfusion ◽  
Study Cohort ◽  
Vessel Occlusion ◽  
Ischemic Core ◽  
Relationship Of ◽  
The Relationship ◽  
Linear Regressions

ObjectiveTo test the hypothesis that acute ischemic patients with poorer collaterals would have faster ischemic core growth, we included 2 cohorts in the study, cohort 1 of 342 patients for derivation and cohort 2 of 414 patients for validation purpose.MethodsAcute ischemic stroke patients with large vessel occlusion were included. Core growth rate was calculated by the following equation: Core growth rate = Acute core volume on CTP/Time from stroke onset to CTP. Collateral status was assessed by the ratio of severe hypoperfusion volume within the hypoperfusion region of CTP. The CTP collateral index was categorized in tertiles; for each tertile, core growth rate was summarized as median and inter-quartile range. Simple linear regressions were then performed to measure the predictive power of CTP collateral index in core growth rate.ResultsFor patients allocated to good collateral on CT perfusion (tertile 1 of collateral index), moderate collateral (tertile 2), and poor collateral (tertile 3), the median core growth rate was 2.93 mL/h (1.10–7.94), 8.65 mL/h (4.53–18.13), and 25.41 mL/h (12.83–45.07) respectively. Increments in the collateral index by 1% resulted in an increase of core growth by 0.57 mL/h (coefficient = 0.57, 95% confidence interval = [0.46, 0.68], p < 0.001). The relationship of core growth and CTP collateral index was validated in cohort 2. An increment in collateral index by 1% resulted in an increase of core growth by 0.59 mL/h (coefficient = 0.59 [0.48–0.71], p < 0.001) in cohort 2.ConclusionCollateral status is a major determinant of ischemic core growth.

Post-natal growth changes in the fibre cortex and medulla of the new zealand romney and N-type sheep

1959 ◽  
Vol 53 (3) ◽  
pp. 358-368 ◽  
Author(s):  
Janet P. Tibbits
Keyword(s):  
Growth Rate ◽  
New Zealand ◽  
Cortical Area ◽  
Genotypic Effect ◽  
Fibre Area ◽  
Fibre Growth ◽  
Skin Biopsies ◽  
Growth Changes ◽  
Relationship Of ◽  
The Relationship

The relationship between cortical area and fibre area has been examined in the N/N, N/ +, + / +, + /nr and nr/nr genotypes of the New Zealand Romney, using skin biopsies taken at birth, 1, 3 and 16 months of age. The presence of the nr gene was shown to reduce significantly the relative cortical area. Within the genotypes there was an increase in relative cortical area with increasing age and in two-tooth ewes of N/N and N/ + there was an increase in relative cortical area in winter compared to summer.Fibre growth rates in length for primaries and for prenatal and post-natal secondaries were found for lambs between 1 and 3 months and for 16-monthold ewes. In N/N, N/+ and nr/nr primary fibre growth tended to be increased and post-natal secondary fibre growth tended to be decreased relative to + / + values.In both cortical area and fibre growth rate the greatest genotypic effect was shown by the primary fibres.Some estimates of cortical volume have been made by combining the information on cortical area and fibre growth rate and the relationship of these factors to follicle density and mean fibre area has been discussed. Finally, an indication has been given of how the associations of all these four factors might be usefully examined in some British breeds.

The relationship of skin follicle development to growth rate in sheep.

1955 ◽  
Vol 6 (2) ◽  
pp. 308 ◽  
Author(s):  
PG Schinckel
Keyword(s):  
Growth Rate ◽  
Birth Weight ◽  
Growth Conditions ◽  
Considerable Importance ◽  
Follicle Development ◽  
Factors Affecting ◽  
Relationship Of ◽  
The Relationship

Observations are reported on factors affecting the ratio of secondary to primary follicles (SJP) in a flock of Merino sheep.It was found that all follicles were initiated prior to birth but that the number which finally came to maturity (production of fibre) was significantly affected by birth weight and growth from birth to 1 month. Growth at later ages appeared to be unimportant. There was a significant correlation (r = +0.29) between birth weight and log potential S/P at birth. This is interpreted to indicate that while pre-natal growth conditions affect the number of follicles initiated, other factors are also of considerable importance. It is concluded that the larger animals at birth also have a greater total number of primary follicles than smaller animals. It is further concluded that this difference in total primary follicles results primarily from differences in size a t the 90th day of pre-natal life rather than from differences in density a t that time.

scholarly journals Determinants of Dividend Policy: A Panel Data Analysis for Turkish Listed Firms

2015 ◽  
Vol 10 (11) ◽  
pp. 149 ◽  
Author(s):  
Narman Kuzucu
Keyword(s):  
Growth Rate ◽  
Panel Data ◽  
Stock Market ◽  
Dividend Policy ◽  
Emerging Market ◽  
Panel Data Analysis ◽  
Firm Level ◽  
Family Control ◽  
Relationship Of ◽  
The Relationship

<p>Dividend policy of firms is one of the most controversial issues of theoretical finance. This paper aims to investigate the firm-level factors influencing the dividend decisions of firms from an emerging market. We examined eight-year panel data for the period from 2006 to 2013 from the Turkish stock market (Borsa Istanbul). The results show that financial leverage, size, growth rate, age, profitability, ownership structure and P/E ratio are statistically significant. The relationship of leverage, growth rate, profitability and family control with dividends is negative, whereas the relationship of size, age and P/E ratio is positive. Therefore, firms with higher debt ratios / growth rates / higher earnings are likely to retain more of their earnings. The empirical evidence from the Turkish stock market shows that the maturity hypothesis proposed by Grullon, Michaely and Swaminathan (2002) best explains the dividend behaviors of firms. Accordingly, as a firm matures, the availability of profitable projects reduces and earnings decrease. As the investment opportunities reduce, the need for resources decreases and the firm increases dividend payouts to shareholders.</p>

The effect of growth rate on muscle distribution in sheep

1975 ◽  
Vol 85 (1) ◽  
pp. 189-191 ◽  
Author(s):  
D. M. Murray ◽  
Olga Slezacek
Keyword(s):  
Growth Rate ◽  
Weight Loss ◽  
Growth Rates ◽  
Live Weight ◽  
High Growth ◽  
Growth Path ◽  
Merino Sheep ◽  
Reported Data ◽  
Relationship Of ◽  
The Relationship

There is little information available on the effect of growth rate on muscle distribution in sheep. Although Lohse, Moss & Butterfield (1971) and Lohse (1973) have reported data on muscle distribution of Merino sheep, the growth rates of animals in both these studies were neither controlled nor reported. In another experiment using Merino sheep, Lohse, Pryor & Butterfield (1973) studied the effect of a period of live-weight loss on the relationship of selected muscles to total side muscle during subsequent re-alimentation. They found that the interrupted growth path decreased the proportion of total side muscle formed by the weight of ten muscles which had previously been classified as muscles with a high growth impetus (Lohse, 1971). Data are presented herein for the muscle distribution of sheep grown along three growth paths.

The Fecundity Of Pacific Herring (Clupea pallasi) in British Columbia Coastal Waters

1958 ◽  
Vol 15 (3) ◽  
pp. 313-330 ◽  
Author(s):  
Fuzuko Nagasaki
Keyword(s):  
Growth Rate ◽  
British Columbia ◽  
Body Length ◽  
Coastal Waters ◽  
Early Spring ◽  
Pacific Herring ◽  
Clupea Pallasi ◽  
Relationship Of ◽  
The Relationship

The fecundity of Pacific herring was investigated from a collection of 600 ovaries gathered from various localities along the British Columbia coast during the winter and early spring of 1954–55. It was found that fecundity depended mainly on body length and to a lesser extent on age, independently of its effect on body length. Certain differences in fecundity, found between herring from various localities when die relationship of fecundity to body length was considered, were not found when the relationship between fecundity, body length and age was considered. These differences were attributed to differences in growth rate. Fecundity of herring of same body length and the same age was found to be significantly higher in northern British Columbia than in southern.

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