Low scale B-L extension of the Standard Model at the LHC

The fact that neutrinos are massive indicates that the Standard Model (SM) requires extension. We propose a low energy (<TeV) B-L extension of the SM, which is based on the gauge group SU(3)_C x SU(2)_L x U(1)_Y x U(1)_{B-L}. We show that this model provides a natural explanation for the presence of three right-handed neutrinos in addition to an extra gauge boson and a new scalar Higgs. Therefore, it can lead to very interesting phenomenological implications different from the SM results which can be tested at the LHC. Also we analyze the muon anomalous magnetic moment in this class of models. We show that one-loop with exchange Z' may give dominant new contribution ~ few x 10^{-11}.Comment: 12 page

1-[(Cyclo­propyl­meth­oxy)meth­yl]-5-ethyl-6-(4-methyl­benzyl)-1,2,3,4-tetra­hydro­pyrimidine-2,4-dione

The pyrimidine ring in the title compound, C19H24N2O3, is nearly planar (r.m.s. deviation = 0.008 Å); the C atom at the 5-position deviates by 0.054 (3) Å from the mean plane and the C atom at the 6-position by 0.006 (3) Å in the opposite direction. The benzene ring is approximately perpendicular to the pyrimidine ring [dihedral angle = 83.90 (10)°]. The amino group is hydrogen-bond donor to the exocyclic O atom at the 2-position of an adjacent mol­ecule, the hydrogen bond generating an inversion dimer. The cyclo­propyl ring is disordered over two sets of sites with the major component having 71.5 (4)% occupancy

Efficiency of selenium in attenuating epididymal histopathological changes in hypercholesterolaemic adult rat

Background: Studies on sperm maturation, epididymal histology, or epididymal tubule physiology are significant parts in reproductive researches. The present study was aimed to evaluate the effect of induced hypercholesterolaemia on the epididymis of adult albino rats and to clarify the possible protective role of selenium. Materials and methods: Forty adult albino Wistar rats were divided into four groups; untreated control group (group I), sham control (group II), group with induced hypercholesterolaemia (group III), group with induced hypercholesterolaemia treated with selenium 0.25 mg/kg/day (group IV). Results: Histological and ultrastructural examination of the epididymal epithelial cells of hypercholesterolaemic rats (group III) showed loss of cilia with many vacuolations, fatty degenerative changes and increased collagen fibres. Morphometrically significant increase (p &lt; 0.0001) in the per cent area of collagen fibres with no significant change in the optical density of periodic acid Schiff reaction (p &gt; 0.05). Selenium treated group (group IV) produced marked improvement in histological, ultrastructural and morphometric results as compared with group III. Conclusions: It could be concluded that hypercholesterolaemia produced deleterious effects to the epididymis and selenium could attenuate these effects

3-(Adamantan-1-yl)-4-ethyl-1H-1,2,4-triazole-5(4H)-thione

In the title compound, C14H21N3S, the 1,2,4-triazole ring is nearly planar, with a maximum deviation of 0.003 (4) Å. In the crystal, mol­ecules are linked into inversion dimers by pairs of N—H⋯S hydrogen bonds

Crystal structure of 4-ethyl-2-{[(4-nitrophenyl)methyl]sulfanyl}-6-oxo-1,6-dihydropyrimidine-5-carbonitrile, C14H12N4O3S

C14H12N4O3S, monoclinic, P21/n (no. 14), a = 12.2777(3) Å, b = 9.4312(2) Å, c = 12.9412(2) Å, β = 107.945(2)°, V = 1425.61(5) Å3, Z = 4, R gt (F) = 0.0305, wR ref (F 2) = 0.0837, T = 160 K. CCDC no.: 2059188 The molecular structure is shown in the figure. Table 1 contains crystallographic data and Table 2 contains the list of the atoms including atomic coordinates and displacement parameters

Crystal structure of 4-chloro-<i>N</i>′-[(1<i>E</i>)-pyridin-3-ylmethylidene]benzohydrazide, C₁₃H₁₀ClN₃O

C13H10ClN3O, monoclinic, P21/c (no. 14), a = 19.0933(2) Å, b = 23.0910(3) Å, c = 10.6831(2) Å, β = 90.064(1)°, V = 4710.00(12) Å3, Z = 16, R gt (F) = 0.0411, wR ref (F 2) = 0.1081, T = 160 K. CCDC no.: 223377

Crystal structure of 2-(adamantan-1-yl)-5-(3,5-dinitrophenyl)-1,3,4-oxadiazole, C18H18N4O5

C18H18N4O5, monoclinic, P21/c (no. 14), a = 11.7553(8) Å, b = 6.4876(4) Å, c = 22.3442(15) Å, β = 91.263(7)°, V = 1703.64(19) Å3, Z = 4, Rgt (F) = 0.0531, wRref (F 2) = 0.1376, T = 160 K. CCDC no.: 2173380 The molecular structure is shown in the figure. Table 1 contains crystallographic data and Table 2 contains the list of the atoms including atomic coordinates and displacement parameters

Crystal structure of 4-chloro-<i>N</i>′-[(1<i>E</i>)-(2-nitrophenyl)methylidene]benzohydrazide, C₁₄H₁₀ClN₃O₃

C14H10ClN3O3, triclinic, P1 (no. 1), alpha = 4.8813(2) angstrom, b = 6.7806(2) angstrom, c = 10.3135(2) angstrom, alpha = 98.101( 2)degrees, ss = 94.174( 2)degrees,gamma= 97.612( 3)degrees, V = 333.515(18) angstrom(3), Z = 1, R-gt(F) = 0.0270, wR(ref) (F-2 )= 0.0743, T = 160 K

N′-(Adamantan-2-yl­idene)thio­phene-2-carbohydrazide

In the title mol­ecule, C15H18N2OS, a small twist is noted, with the dihedral angle between the central carbohydrazone residue (r.m.s. deviation = 0.029 Å) and the thio­phene ring being 12.47 (10)°. The syn arrangement of the amide H and carbonyl O atoms allows for the formation of centrosymmetric dimers via N—H⋯O hydrogen bonds. These are linked in the three-dimensional structure by C—H⋯π inter­actions. The thio­phene ring is disordered over two co-planar orientations, the major component having a site-occupancy factor of 0.833 (2)