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Analysis of R,L,F,B systems of spatial vectorcardiography
American Heart Journal, 1956Abstract 1.1. Various systems of spatial vectorcardiography employing right arm (R), left arm (L), left leg (F), and back electrode (B) are studied for homogeneous, three-dimensional male and female torso models using an accurate unipolar measurement technique. 2.2.
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Effects of L*a*b* color parameters on perceived smile attractiveness
The Journal of Prosthetic DentistryDespite the importance of tooth color in smile esthetics, an understanding of how specific changes in L*, a*, and b* color parameters affect perceived smile attractiveness across different tooth positions is lacking. Additionally, the influence of evaluator characteristics on color perception remains unclear, making it challenging for clinicians to ...
Chenglu Ruan +6 more
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Purification and properties of l-asparaginase B from Acinetobacter calcoaceticus
Biochimica et Biophysica Acta (BBA) - Enzymology, 1976L-Asparaginase (L-asparagine amidohydrolase, EC 3.5.1.1) B from Acinetobacter calcoaceticus has been purified by precipitation with streptomycin, chromatography on DEAE-cellulose and CM-cellulose, gel filtration on Agarose and chromatography on phosphocellulose. The molecular weight of the enzyme was found to be 130 000.
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Semantic Analysis of the Root “L-‘a-b” in the Qur’an
2023In Arabic dictionaries, the root l-‘a-b has two basic meanings: al-la'ibu, which means “play”, and al-lu'âbu, which means “mouth water/saliva”. In the historical process, many words derived from these roots and acquired different meanings. In the present article, a semantic analysis of the root l-‘a-b and its derivatives has been performed ...
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