A special relational structure, called genealogical tree, is introduced; its social interpretation and geometrical realizations are discussed. The numbers Cn,k of all abstract genealogical trees with exactly n+1 nodes and k leaves is found by means of enumeration of code words. For each n, the Cn,k form a partition of the n-th Catalan numer Cn, that means Cn,1 + Cn,2 + · · ·+ Cn,n = Cn.

OBJECTIVE To evaluate the effect of nutritional plane on health and performance of dairy calves after infection with Cryptosporidium parvum. DESIGN Randomized, controlled trial. ANIMALS 20 Holstein bull calves. PROCEDURES Calves were assigned to a higher plane of nutrition (HPN; 0.30 Mcal intake energy/kg of metabolic body weight using a 28% protein-20% fat milk replacer) or conventional ...

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The preparation and X-ray crystal structures of (CyNC)Au(I)CN, (n-BuNC)Au(I)CN, and (i-PrNC)Au(I)CN.0.5CH(2)Cl(2) are reported and compared with those of (MeNC)Au(I)CN and (t-BuNC)Au(I)CN, which were previously described. These linear molecules are all organized through aurophilic interactions into three structural classes: simple chains ((CyNC)Au(I)CN and (t-BuNC)Au(I)CN), side-by-side chains ...

Aims Sudden cardiac death (SCD) is a major public health burden. Mitochondrial dysfunction has been implicated in a wide range of cardiovascular diseases including cardiomyopathy, heart failure, and arrhythmias, but it is unknown if it also contributes to SCD risk. We sought to examine the prospective association between mtDNA copy number (mtDNA-CN), a surrogate marker of mitochondrial function...

AIMS To develop and validate empirically a mathematical model for identifying new cannabis use in chronic, daily cannabis smokers. DESIGN Models were based on urinary creatinine-normalized (CN) cannabinoid excretion in chronic cannabis smokers. SETTING For model development, participants resided on a secure research unit for 30 days. For model validation, participants were abstinent with da...

BACKGROUND The E-26 transformation-specific related gene (ERG) is frequently expressed in cytogenetically normal acute myeloid leukemia (CN-AML). Herein, we performed a meta-analysis to investigate the relationship between the prognostic significance of ERG expression and CN-AML. METHODS A systematic review of PubMed database and other search engines were used to identify the studies between ...

In the present article we study the asymptotic behavior of the sums n≤x cn+1 pn+1 − cn pn and n≤x pn+1 cn+1 − pn cn , and of the series ∞ n=1 cn+1 pn+1 − cn pn α , where p n denotes the n-th prime number while c n stands for the n-th composed number.

OBJECTIVE The (CTG)(n) polymorphism in the serum carnosinase (CN-1) gene affects CN-1 secretion. Since CN-1 is heavily glycosylated and glycosylation might influence protein secretion as well, we tested the role of N-glycosylation for CN-1 secretion and enzyme activity. We also tested whether CN-1 secretion is changed under hyperglycemic conditions. RESULTS N-glycosylation of CN-1 was either ...