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Perfluorotetradecanoic acid (PFTeDA) is a novel perfluoroalkyl substance that ubiquitously exists in the environment. However, whether PFTeDA affects adrenal cortex function remains unclear. Male Sprague–Dawley rats (age of 60 days) were daily administered with PFTeDA (0, 1, 5, and 10 mg/kg body weight) through gavage for 28 days. PFTeDA did not change body and adrenal gland weights. PFTeDA markedly...
Perfluorotetradecanoic acid (PFTeDA) is a long‐chain perfluoroalkyl compound with increased applications. Its effect on Leydig cell function and its underlying mechanism remain unclear. Male Sprague–Dawley rats (60 days old) were gavaged with PFTeDA at doses of 0, 1, 5, and 10 mg/kg/day from 60 to 87 days after birth. PFTeDA significantly reduced serum testosterone levels at 1 mg/kg and higher doses,...
In this paper, a novel wood identification approach based on the two-directional two-dimensional PCA ((2D)2PCA) method is proposed in contrast to the principal component analysis(PCA), two-dimensional PCA(2DPCA), column-directional 2DPCA(c2DPCA). PCA is a classical technique used to find patterns in high dimensional data. Wood identification based on PCA must transform 2D image matrix into 1D vector,...
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