نتایج جستجو برای: allometric characteristics

تعداد نتایج: 663433  

Journal: :Jornal de pediatria 1994
I S Neto R M Rega M C Neves

The ponderal growth of the larynx was studied in human fetal period between the 9th and 38th weeks post-conception (w.p.c.). The larynx weight (in grams - g) was related with body weight (in grams -g) using the allometric equation Y= ax(b). Our results indicated that relative growth of the larynx is allometric negative (b= 0.55, p < 0.001). These data are important in estimating the fetal gesta...

Journal: :Biological research 2005
Roberto F Nespolo

The necessity of the mathematical description of living processes and the recent advances in theoretical syntheses that fit surprisingly well with real data have led many scientists to experiment with new "generalizations," beginning with allometric equations. I present here, briefly, why caution is needed when allometric equations are multiplied or divided to make new ones. This practice is fl...

2014
Astor Toraño Caicoya Florian Kugler Matteo Pardini Irena Hajnsek Konstantinos Papathanassiou

First attempts for the estimation of above ground forest biomass (AGB) by means of SAR, have used allometric equations to calculate biomass from the estimated PolInSAR forest height. However, changes in forest density or structure bias the known allometric relations. Today, remote sensing systems like SAR are able to measure additional parameters like vertical forest structure [1] [2]. In this ...

Journal: :international journal of aquatic biology 0
mohammad mohadasi department of biology, faculty of science, guilan university, rasht, iran. soheil eagderi department of fisheries, faculty of natural resources, university of tehran, karaj, iran. nader shabanipour department of biology, faculty of science, guilan university, rasht, iran. mahboube sadat hosseinzadeh department of biology, faculty of science, ferdowsi university, mashhad, iran. hossein anvarifar department of fisheries, university applied science and technology, gorgan, iran. roozbahan khaefi department of biology, faculty of science, shiraz university, shiraz, iran.

study of phenotypic diversity among populations can help better understanding of diversification of species within ecosystems and intraspecific diversification in fishes. a geometric morphometric study was carried out using the elliptic fourier analysis to demonstrate the effect of habitat type on morphological features of shemaya ( alburnus chalcoides ) populations. populations were sampled fr...

Journal: :Bone 2007
Stefano Z M Brianza Patrizia D'Amelio Nicola Pugno Marco Delise Cristina Bignardi Giancarlo Isaia

INTRODUCTION Adaptation of bone to different loads has received much attention. This paper examines the consequences of differences in size on bones from the same animal species. METHODS The study was conducted on 32 canine radii. Their geometry, densitometry and mechanical properties were determined and one-way ANOVA was used to analyze their distribution by sex. Bending failure was observed...

Journal: :Neotropical entomology 2008
Mónica S Iglesias María S Gaspe Alejandra C Valverde

The multivariate allometric growth patterns from longitudinal data of leg and rostral segments of all instars of Belostoma elegans (Mayr) and B. cummingsi De Carlo are presented for the first time, and the allometric coefficients are compared. The segments of the middle and hind legs present allometric coefficients with opposite polarity to those of forelegs. This discrepancy in the ontogenetic...

2006
Xiaoyang Zhang Shobha Kondragunta

[1] Spatially-distributed forest biomass components are essential to understand carbon cycle and the impact of biomass burning emissions on air quality. We estimated the density of forest biomass components (foliage biomass, branch biomass, and aboveground biomass) at a spatial resolution of 1 km across the Contiguous United States using foliage-based generalized allometric models and Moderate-...

Journal: :Polish journal of veterinary sciences 2014
S Yohannes Md Akil Hossain J Y Kim S J Lee D M Kwak J W Suh S C Park

The association between physiologically dependent pharmacokinetic parameters (CL(B), T1/2beta, Vd(ss)) of marbofloxacin and body weight was studied in eight animal species based on allometric equation Y = aWb, where 'Y' is the pharmacokinetic parameter, 'W' is body weight, 'a' is allometric coefficient (intercept) and 'b' is the exponent that describes relation between pharmacokinetic parameter...

2011
M Battán Horenstein Av Peretti

The objective of this research was to study variations in allometry of body characters in females and males of two populations of blow flies, Chrysomya albiceps (Wiedemann) (Diptera: Calliphoridae), under different environmental conditions to establish patterns of morphological variation. Body size of both males and females in the experimental population was significantly higher than in the ind...

Journal: :Forests 2023

The management of stand structure and the protection species diversity are crucial to forest ecosystem service functions. Changbai Mountain is one three major regions in Northeast China, understanding characteristics allometric relationship between variables correlation factors basis for achieving effective ecological function improvement. In this study, typical deciduous broad-leaved mixed con...

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