1,637 research outputs found
2-Chloro-N-[(4-chloroÂphenÂyl)(phenÂyl)methÂyl]-N-[2-(4-nitro-1H-imidazol-1-yl)ethÂyl]ethanamine
In the title compound, C20H20Cl2N4O2, the nitroÂimidazole ring makes dihedral angles of 17.00 (1) and 60.45 (11)° with the phenyl and chloroÂphenyl rings, respectively. The three-coordinate N atom connected to two methylÂene and one methine C atoms shows pyramidal coordination
7-(6-BromoÂhexÂyloxy)-4-methyl-2H-chromen-2-one
In the title molÂecule, C16H19BrO3, all non-H atoms apart from the Br atom are approximately coplanar, with a maximum deviation of 0.242 (4) Å. The C—C—C—Br torsion angle is 66.5 (4)°
Seroprevalence of <em>Lawsonia intracellularis</em> antibodies in intensive pig farms in China
BACKGROUND: Porcine proliferative enteropathy caused by Lawsonia intracellularis (L. intracellularis) is a major concern to the pig industry worldwide. Although 8.3 billion pigs are produced each year in China, few reports on the prevalence of L.intracellularis infection are available. The aim of the current study was to estimate the seroprevalence of L. intracellularis antibodies in intensive pig farms in China. RESULTS: A total of 1060 serum samples were collected from 14 commercial pig farms located throughout China. Animals from all age groups were sampled including pre-weaning piglets, weaners, fattening pigs, adult sows and boars. Antibodies against L. intracellularis were detected using a specific blocking ELISA. Of the 1060 serum samples, 602 were identified as positive using the ELISA test. The apparent seroprevalence of L. intracellularis seropositivity was 57% (95% CI 50 to 64%). The true prevalence (that is, prevalence corrected for the imperfect sensitivity and specificity of the testing method) was 77% (95% CI 70 to 83%). CONCLUSIONS: The highest true prevalence was observed in sows and boars, suggesting that within a herd these stock classes are a reservoir for infection. The prevalence of L. intracellularis seropositivity in local breed pigs was significantly less than that in imported breeds. A higher seroprevalence was found in pigs in herds in Central and Northern China, which may correspond to the greater use of the intensive production systems in these areas. We conclude that L. intracellularis is widely prevalent in commercial pigs in China
Insights into long noncoding RNAs of naked mole rat (Heterocephalus glaber) and their potential association with cancer resistance
Additional file 4: Table S3. Differential expressed lncRNAs identified in naked mole rat (Heterocephalus glaber) genome
Vibrio cholerae ghosts (VCG) exert immunomodulatory effect on dendritic cells for enhanced antigen presentation and induction of protective immunity
Preferential arrangement of uniform Mn nanodots on Si(111)-7x7 surface
Under proper growth conditions, ordered and uniform Mn nanodots were
fabricated on the Si(111)-7x7 surface without the presence of a wetting layer.
Furthermore, the Mn nanodots deposited onto the elevated substrates were
observed to occupy preferentially on the faulted half unit cells (FHUCs) of the
Si(111)-7x7 surface. This phenomenon implies that the Mn dots adsorbed on the
FHUCs is more stable than those adsorbed on the unfaulted half unit cells
(UFHUCs). Within the framework of quasiequilibrium thermodynamics, the energy
difference between adsorption on the UFHUCs and the FHUCs was estimated to be
0.05eV. The intrinsic attractive potential wells on the FHUCs effectively trap
the outdiffusion of Mn atoms, and consequently result in a preferential
arrangement of islands with well-defined sizes
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