Biodegradation is an effective method for the removal of taste and odour (T&O) compounds from drinking water sources. In this study, the applicability of a moving-bed biofilm reactor (MBBR) as biological treatment step for the control of MIB and geosmin was studied at pilot-scale. After a 3.5 mo...

A visual, rapid, and sensitive method for the detection of two algal metabolites, geosmin (GSM) and 2-methylisoborneol (2-MIB) using a competitive displacement technique based on molecular imprinted polymers (MIPs) and fluorescent tags was developed. In this method, fluorescent tags that bind to...

Geosmin is an earthy-muddy smelling compound produced in aquatic ecosystems by microorganisms including cyanobacteria. An increase in geosmin levels affecting the local fishery occurred in May 2007 in Lake Shinji, Japan, and geosmin-producing colonial cyanobacterium, Coelosphaerium sp. G2, was i...

A series of thienylazo and thiazolylazo disperse dyes has been prepared from their corresponding coupling components, 2-aminothiophenes and 2-aminothiazole. Depending on the various substituents present in the diazo component, absorption maxima varied from 437 to 534 nm in toluene. The spectrosc...

We have synthesized several novel palladium(0) olefin complexes stabilized by strong σ-donating bis-chelating carbene ligands characterized by one or two CH2 spacers and electron-withdrawing olefins. Although it appears obvious that the σ-donating carbenes and electron-withdrawing olefins shou...

We have synthesized different bioconjugates of curcumin, which were tested for their pro- and antioxidant properties. In the present study five representative derivatives of curcumin, i.e., 4,4′-di-(O-acetyl) curcumin, 4,4′-di-(O-glycinoyl) curcumin, 4,4′-di-(O-glycinoyl-di-N-piperoyl) curcum...

In the present communication different curcumin bioconjugates viz. 4,4′-di-O-glycinoyl-curcumin, 4,4′-di-O-d-alaninoyl-curcumin, 4,4′-di-O-(glycinoyl-di-N-piperoyl)-curcumin, 4,4′-di-O-piperoyl curcumin, curcumin-4,4′-di-O-β-d-glucopyranoside, 4,4′-di-O-acetyl-curcumin along with piperoyl...

Two novel multibranched dyes curcumin-based: 1,7-bis(4′-propyloxy-3′-methyloxy-phenyl)-3-propyloxy-5-carbonyl-1,6-heptadiene (dye 1) and 1,7-bis(4′-acetate ethyloxy-3′-methyloxy-phenyl)-1,6-heptadiene-4,4-diacetate ethyl-3,5-dione (dye 2) were easily prepared. Their one- and two-photon absor...

Several neurodegenerative diseases, like Alzheimer’s (AD), are characterized by amyloid fibrillar deposition of misfolded proteins, and this feature can be exploited for both diagnosis and therapy design. In this paper, structural modifications of curcumin scaffold were examined in order to imp...

Curcumin and its two related compounds, that is, demethoxycurcumin and bis-demethoxycurcumin (curcuminoids) are the main secondary metabolites of Curcuma longa and other Curcuma spp. Curcumin is commonly used as coloring agent as well as food additive; curcumin has also shown some therapeutic ac...

Activation of nuclear factor erythroid-2-related factor 2 (Nrf2) has been proven to be an effective means to prevent the development of cancer, and natural curcumin stands out as a potent Nrf2 activator and cancer chemopreventive agent. In this study, we synthesized a series of curcumin analogs ...

Curcumin is a natural product with a broad spectrum of beneficial properties relating to pharmaceutical applications, extending from traditional remedies to modern cosmetics. The biological activity of such pigments, however, is limited by their solubility and bioavailability, thereby necessitat...

Publisher SummaryThe chapter describes the role of both magnesium and beryllium as aerospace structural materials, along with their limitations. Magnesium is the lightest weight of the structural alloys and its use in aerospace is very limited as it is expensive and the fabrication costs are hig...

Biodegradable magnesium implants are under investigation because of their promising properties as medical devices. For enhancing the mechanical properties and the degradation resistance, rare earth elements are often used as alloying elements.In this study Mg10Gd pins were implanted into Sprague...

The aim of this study was to prepare a series of amide extractants and to assess their properties as potential metal extractants for the rare earth metal neodymium. A number of diamides and a monoamide were synthesized with different substituting groups, including alkyl chains, cyclohexyl chains...

Implants made of degradable magnesium alloys are a potential alternative to conventional orthopaedic implant materials, e.g. stainless steel or titanium. Intramedullary nails made of the magnesium alloy LAE442 were subjected to cyclic fatigue tests in both distilled water and Hank's Balance...

The corrosion rates of High Density Die Cast MRI 201S and three other magnesium alloys in 3% NaCl were measured.The side surfaces of some specimens were insulated by a polymer, while the other specimens had all the surfaces open to the corrosive media. No difference between the two types of spec...

The electrochemical behaviour of a commercial magnesium alloy containing rare-earth elements, the WE43, was investigated by electrochemical techniques in both sulphate and chloride solutions and compared to that of pure magnesium (99.95 wt %). A particular attention was paid to the oxides film t...

Hot corrosion behaviour of rare earth magnesium hexaaluminate (REMHA) based thermal barrier coatings (TBCs) such as i) lanthanum magnesium hexaaluminate (LMHA), ii) neodymium doped LMHA (LNMHA) and iii) LNMHA-yttrium aluminium garnet composite were investigated and compared with standard yttria ...

Rare earth elements are promising alloying element candidates for magnesium alloys used as biodegradable devices in biomedical applications. Rare earth elements have significant effects on the high temperature strength as well as the creep resistance of alloys and they improve magnesium corrosio...