For extracting collocations from the Internet, it is necessary to numerically estimate the cohesion between potential collocates. Mutual Information cohesion measure (MI) based on numbers of collocate occurring closely together (N12) and apart (N1, N2) is well known, but the Web page statistics deprives MI of its statistical validity. We propose a family of different measures that depend on N1,...

An ionspray ionization mass-spectrometric method for the determination of N1,N12-diacetylspermine (Ac2Spm) was developed using 15N-labeled Ac2Spm as the internal standard. Concentrations of Ac2Spm in the urine obtained from 17 cancer patients measured by the present method correlated well with those measured by ELISA, showing the usefulness of the two methods.

The ppsR gene (R. J. Penfold and J. M. Pemberton, J. Bacteriol. 176:2869-2876, 1994) from Rhodobacter sphaeroides 2.4.1 functions as a transcriptional repressor of puc and bchF expression. The carboxy terminus of PpsR, containing the putative DNA-binding domain, by itself possesses repressor activity. Intact palindromes having the motif TGT-N12-ACA are required for PpsR activity.

Six density functionals (M11, M11L, MN12L, MN12SX, N12, and N12SX) in connection with the Def2TZVP basis set and the SMD solvation model (water as a solvent) have been assessed for the calculation of the molecular structure and properties of several peptides with the general formulaAc-Lys-(Ala)n-Lys-NH2,withn=0to5  [...].

MicroRNAs (miRNAs), a class of small non-coding RNAs, recognize their mRNA targets based on perfect sequence complementarity. MiRNAs lead to broader changes in gene expression after plants are exposed to stress. High-throughput sequencing is an effective method to identify and profile small RNA populations in non-model plants under salt stresses, significantly improving our knowledge regarding ...

'Department of Biology and Biochemistry, Brunel University, Kingston Lane, Uxbridge, Middlesex UB8 3PH; 2Istituto di Ginecologia e Ostetricia, Universita di Torino, Turin, Italy; 3Constultant Obstetrics and Gynaecology, Queen's Medical Centre, Clifton Bullevard, Nottingham, NG7 2UH; 4The Health Centre, Torrington Park, London N12 9SS; 'University College and Middlesex School of Medicine, Windey...

[1] In their recent paper, Nishimura et al. [2012], hereafter termed N12, conclude that Pi2 magnetic field pulsations and auroral brightenings in the substorm expansion phase are driven coherently by flow bursts in the magnetotail. The authors claim not only that the flow bursts, auroral brightenings, and magnetic field perturbations all have periodicities in the Pi2 range but significantly als...

The transgenic wheat line N12-1 containing the WYMV-Nib8 gene was obtained previously through particle bombardment, and it can effectively control the wheat yellow mosaic virus (WYMV) disease transmitted by Polymyxa graminis at turngreen stage. Due to insertion of an exogenous gene, the transcriptome of wheat may be altered and affect root exudates. Thus, it is important to investigate the pote...