نتایج جستجو برای: allometric characteristics
تعداد نتایج: 663433 فیلتر نتایج به سال:
The science of morphological allometry centers around relationships between the size of organismal structures and overall body size. Morphological allometry usually is concerned with two parameters, the slope of log–log plots of trait parameters on body mass or size (reflecting how trait size varies with body size), and the intercept of such plots (providing measures of body-size–independent tr...
Allometry, in general biology, measures the relative growth of a part in relation to the whole living organism. Left ventricular hypertrophy (LVH) is the heart adaptation to excessive load (systolic or diastolic). The increase in left ventricular mass leads to an increase in the electrocardiographic voltages. Based on clinical data, we compared the allometric behavior of three different ECG mar...
Jellyfish form spectacular blooms throughout the world's oceans. Jellyfish body plans are characterised by high water and low carbon contents which enables them to grow much larger than non-gelatinous animals of equivalent carbon content and to deviate from non-gelatinous pelagic animals when incorporated into allometric relationships. Jellyfish have, however, been argued to conform to allometr...
Oreochromis niloticus is one of the most widespread species in Africa. Its introduction around world economic and social benefit especially rural communities where they are caught from wild or cultured captivity. Length frequency distribution was used to estimate age this commercial fish between May October, 2012. A year old (1+) specimen had a total length size class 100-121 mm. Other classes ...
Interspecies allometric scaling of antimalarial drugs and potential application to pediatric dosing.
Pharmacopeial recommendations for administration of antimalarial drugs are the same weight-based (mg/kg of body weight) doses for children and adults. However, linear calculations are known to underestimate pediatric doses; therefore, interspecies allometric scaling data may have a role in predicting doses in children. We investigated the allometric scaling relationships of antimalarial drugs u...
The allometric-constraint hypothesis states that evolutionary divergence of morphological traits is restricted by integrated growth regulation. In this study, we test this hypothesis on a time-calibrated and well-documented palaeontological sequence of dental measurements on the Pleistocene arvicoline rodent species Mimomys savini from the Iberian Peninsula. Based on 507 specimens representing ...
The aim of this study was to investigate the influence of MHS genotype on growth and development of muscle and fatty tissue in pig hams. The investigation was performed on 72 barrows divided into 4 groups according to genotype (NN and Nn) and feeding regime (standard and intensive). The data for analyses were collected by MRT imaging; the coefficients of allometric growth were calculated using ...
Theoretical models for allometric relationships between organismal form and function are typically tested by comparing a single predicted relationship with empirical data. Several prominent models, however, predict more than one allometric relationship, and comparisons among alternative models have not taken this into account. Here we evaluate several different scaling models of plant morpholog...
Investigations in the past two decades have shown the utility of the Newtonian model of heat loss from homoiotherms which was established in the biological literature by Scholander et al. (1950a, b, c). The stimulative effect of those papers is seen in a proliferation of thermoregulatory studies (for reviews see Bartholomew, 1968; Dawson & Hudson, 1970). Sufficient data'have been generated from...
Modelling allometric equations for saplings of hybrid poplar clone produce a highly accurate estimate of pure productivity and C sequestration, leading to better sales and determination of the capacity of cellulose resources and bio-energy pools. Twenty five cuttings with 25 cm length were planted within a 1×1 m2 area in the Talookola nursery, Sari, in 2011. Ten saplings were selected from the ...
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