26 research outputs found
Surface-enhanced Raman spectroscopy study of 4-ATP on gold nanoparticles for basal cell carcinoma fingerprint detection
The surface-enhanced Raman signals of 4-aminothiophenol (4-ATP) attached to the surface of colloidal gold nanoparticles with size distribution of 2 to 5 nm were used as a labeling agent to detect basal cell carcinoma (BCC) of the skin. The enhanced Raman band at 1075 cm-1 corresponding to the C-S stretching vibration in 4-ATP was observed during attachment to the surface of the gold nanoparticles. The frequency and intensity of this band did not change when the colloids were conjugated with BerEP4 antibody, which specifically binds to BCC. We show the feasibility of imaging BCC by surface-enhanced Raman spectroscopy, scanning the 1075 cm-1 band to detect the distribution of 4ATP-coated gold nanoparticles attached to skin tissue ex vivo
EFSA CEF Panel (Panel on Food Contac t Materials, Enzymes, Flavourings and Processing Aids , 2013. Scientific Opinion on Flavouring Group Evaluation 2 07 (FGE.2 07 )
International audienc
Initial Operating Room Experience with Digital Variance Angiography in Carbon Dioxide-Assisted Lower Limb Interventions: A Pilot Study
Automated tube voltage selection and adapted contrast media injection protocols in CT angiography of the thoracoabdominal aorta
The distribution of ciliates on Ecology Glacier (King George Island, Antarctica): relationships between species assemblages and environmental parameters
Ciliates are important consumers of pico- and
nano-sized producers, are nutrient regenerators, and are an
important food source for metazoans. To date, ecological
research on ciliates has focused on marine ecosystems
rather than on glacier habitats. This paper presents the first
major study on ciliates from the Ecology Glacier (South
Shetland Islands, Antarctica). The objective of the study
was to investigate the structure and spatial distribution of
ciliate communities and to identify the environmental
factors determining the structure of the assemblages.
Microbial communities were collected from three habitats:
surface snow, cryoconite holes, and glacier streams. Sampling
was carried out every 3–4 days from January 17 to
February 24, 2012. A total of 18 ciliate taxa were identified.
The species richness, abundance, and biomass of
protozoa differed significantly between the stations studied
with the lowest numbers in streams on the glacier surface
and the highest numbers in cryoconite holes. The RDA
performed to specify the direct relationships between the
abundance of ciliate taxa and environmental variables
showed obvious differences between studied habitats. The
analysis showed that all variables together explained
62.4 % of total variance. However, variables thatsignificantly explained the variance in ciliate communities
in cryoconite holes, snow, and surface streams were temperature,
conductivity, and total nitrogen. Further research
is required to explain the impact of biotic factors influencing
the presence of ciliates, including the abundance of
bacteria, microalgae, and small Metazoa
Fishes from the Itapecuru River basin, State of Maranhão, northeast Brazil
The Itapecuru is a relatively large river in the northeastern Brazilian state of Maranhão. During several expeditions to this basin, we collected 69 fish species belonging to 65 genera, 29 families and 10 orders. Characiformes and Siluriformes were the orders with the largest number of species and Characidae, Loricariidae, Cichlidae, Auchenipteridae and Pimelodidae were the richest families. About 30% of the fish fauna of the Itapecuru basin is endemic or restricted to northeastern Brazil. Just over a fifth (22%) of the species is also known to occur in the Amazon basin and only a few are more widely distributed in South American
Scientific Opinion on Flavouring Group Evaluation 11, Revision 3 (FGE.11Rev3): Aliphatic dialcohols, diketones, and hydroxyketones from chemical groups 8 and 10
Effect of geomorphology and nitrogen deposition on rate of vegetation succession in inland drift sands
Questions (1) At what rate does succession take place in active and more stabilized drift sands in regions with low and high N deposition in the Netherlands? (2) What is the present composition of pioneer vegetation in active and more stabilized drift sa