arsenic is one of the heavy metals and nearly all its compounds, especially organic compounds, are toxic. the wide spectrum of diseases caused by this element has led to evaluation of the toxicity of different arsenic species and identification of the major natural and anthropogenic pollution sources of it in the nature. mining activities are among the main sources of anthropogenic pollution of...

G raham Hutchings of Cardiff University made a discovery in 1982 that came to define his career. He predicted that golddespite its reputation for being inertshould be an excellent catalyst for an industrial reaction that makes vinyl chloride monomer (VCM, or chloroethene), used to produce one of the world’s most ubiquitous plastics, polyvinyl chloride (PVC). More than three decades later, Hut...

introduction application of near-infrared absorbing nanostructures can induce hyperthermia, in addition to providing more efficient  photothermal effects. gold-gold sulfide (ggs) is considered as one of these nanostructures. this study was performed on a tissue-equivalent optical-thermal phantom to determine the temperature profile in the presence and absence of ggs and millisecond pulses of a ...

Biofunctionalized gold and silver nanoparticles synthesized using different plant extracts of guava and clove in vitro anti-cancer efficacy against four different cancer cell lines human colorectal adenocarcinoma, human kidney, human chronic myelogenous, leukemia, bone marrow, and human cervix have been studied and reported. The present experimental study suggests that flavonoids functionalized...

A biomimetic method of gold nanoparticles synthesis utilizing the highly invasive aquatic weed pistia (Pistia stratiotes) is presented. In an attempt to utilize the entire plant, the efficacy of the extracts of all its parts - aerial and submerged - was explored with different proportions of gold (III) solution in generating gold nanoparticles (GNPs). The progress of the synthesis, which occurr...

48 Play portion 49 Part of a baseball 51 Wife, in Wiesbaden 53 Originators 57 Great Danish poet: 1587-1637 61 Stop 62 Raging; frantic 64 Author Gardner 6 5 Concerning 66 Sped 67 Unwanted plant 68 Gold medalist Carl or Steve 6 9 Service club

A new surface-based MALDI-Tof-MS glycosyl hydrolase assay has been developed in which lipid-tagged oligosaccharides, representing defined fragments of major plant cell wall polysaccharides, are immobilized via hydrophobic interactions on an alkylthiol functionalised gold sample plate and employed in the functional screening of several purified enzymes, environmental samples and saliva.

Polymer gold nanoshells (PGNs) are prepared by a novel plant-inspired flavonoid surface modification method. The PGNs show dramatic photothermal properties, which can facilitate the endosomal escape and delivery of siRNA into the cytoplasm of cells. Efficient gene silencing has been achieved using siRNA immobilized PGNs, suggesting the potential applications of in vitro gene regulation by an ex...