A four-parameter generalization of the Gompertz curve suitable for somatic growth [0.03%]
一个四参数广化戈茨曲线适用于体生长模型
P Jolicoeur,T Cabana,G Ducharme
P Jolicoeur
A four-parameter generalization of the Gompertz curve is proposed which passes through the origin with respect to total age and is often more suitable for somatic growth than the three-parameter Gompertz curve. Applied to published cross-se...
D E Harrison
D E Harrison
J E Lovich,J W Gibbons
J E Lovich
Previous studies of sexual size dimorphism (SSD) use a variety of size dimorphism indices (SDI's) to quantify SSD. We propose that a useful SDI should meet four criteria as follows; 1) it should be properly scaled, 2) it should have high in...
M A Watkins,R Z German
M A Watkins
The skeletal components of fetal limbs change in both size and shape throughout gestation. Relative growth of different bones, as well as differences between homologous bones of the upper and lower limbs, are not well known for all stages o...
W D Wosilait,R H Luecke,J F Young
W D Wosilait
There is no set of growth data from a single source for the human embryo/fetus which spans the full range of pregnancy. For mathematical and statistical analysis of the full gestational period, it was necessary to pool data from several sou...
Growth analysis by the first, second, and third derivatives of the Richards function [0.03%]
富兰克函数的一阶、二阶和三阶导数的生长分析
S R Nath,F D Moore rd
S R Nath
The Richards function serves as a tool for growth (W) analysis by means of absolute growth rate (AGR), i.e. dW/dt, and relative growth rate (RGR), i.e. d(loge W)/dt. More information may be gained using the second derivative d2W/dt2, and th...
Expression of phosphatidylinositol-dependent phospholipase C sensitive Qa-2 antigen is increased on peripheral blood lymphocytes of aging mice [0.03%]
衰老小鼠外周血淋巴细胞中磷脂酶C敏感的Qa-2抗原表达增强
M J Armstrong,C M Warner
M J Armstrong
Qa-2 antigen, a nonclassical MHC antigen, is one of a group of cell surface antigens that may be anchored to the cell surface by a glycophosphatidylinositol (GPI) linkage rather than, as is the case with the classical MHC antigens, K, D, an...
Embryonic oxygen consumption and organ growth in the wedge-tailed shearwater [0.03%]
楔尾鹱胚胎耗氧量及其器官生长关系的研究
Q Zhang,G C Whittow
Q Zhang
Embryonic oxygen consumption and organ growth were measured in the Wedge-tailed Shearwater (Puffinus pacificus), a tropical seabird characterized by slow embryonic growth and a prolonged pipping process prior to hatching. In most organs, gr...
Tibia development in turkeys and chickens as affected by early-age feed restriction [0.03%]
早期限饲对火鸡和肉鸡胫骨发育的影响
S Hurwitz,E Livne,I Plavnik et al.
S Hurwitz et al.
Tibia development was studied by histomorphometry in male chickens and turkeys fed ad libitum throughout the growing period, or subjected to an early-age (1-week) severe feed restriction for 6 and 14 days, respectively. In turkeys, the rate...
Sexual cranial dimorphism in malnourished rats treated with growth hormone [0.03%]
生长激素治疗营养不良大鼠的性别颅骨二态性研究
E E Oyhenart,H M Pucciarelli
E E Oyhenart
One hundred and sixty two Holtzman rats of both sexes were malnourished during suckling and post-weaning periods. Some of them received periodic injections of growth hormone. After sampling, at 56 days of age, skulls were cleaned and measur...