Covalent modification of surfaces with carbohydrates (glycans) is a prerequisite for a variety of glycomics-based biomedical applications, including functional biomaterials, glycoarrays, and glycan-based biosensors. The chemistry of glycan immobilization plays an essential role in the bioavailability and function of the surface bound carbohydrate moiety. However, the scarcity of analytical meth...

We demonstrate the effects of protein orientation and trehalose on a quantitative analysis of surface-immobilized proteins by using time-of-flight secondary ion mass spectrometry (TOF-SIMS). As our model protein, streptavidin (SA) was quantitatively immobilized on a solid surface at different configurations by random or oriented immobilization and subsequently treated with trehalose. The result...

The rapid adoption of social media by billions of people from all over the world has unleashed unprecedented opportunities for marketers and cognitive scientists to better understand why some message become popular while other die quickly. We designed a novel technique for automatically learning to differentiate popular tweets from unpopular ones and to predict how popular a given tweet will be...

S OF REPORTS FROM BSA VACATION

Globba macrocarpa Gagnep. is a rare species of genus (Zingiberaceae family). The present study reported the chemical compositions and antibacterial effects acetone extracts obtained from G. rhizomes aerial parts. By using Gas Chromatography Mass Spectrometry (GC/MS) assay, fifty thirty-two compounds were identified parts species, respectively. Of those, germacrene D (15.25 %), 1H-indole, 4-(3-m...

Species from the genus Campomanesia have been studied due to their biological activity and low toxicity. However, studies on fruit peel of these species are scarce. In this context, effects ethanol extract sessiliflora (O. Berg) Mattos (CS) guazumifolia (Cambess) O. Berg (CG) were evaluated concerning effect germination meristem cells roots Allium cepa. The CG ethanolic showed flavonoid compoun...

ToF-SIMS has been used in the analysis of latent fingerprints (dactyloscopy) with a view to use in forensic and biomedical applications. Szynkowska et al have demonstrated that SIMS can be employed to produce images of whole fingerprints on inorganic surfaces such as steel, brass and glass (1). We demonstrate the detection of a range of exogenous materials in fingerprints including industrial l...