The infrared and Raman spectra of 2,2,3-dichlorobutane have been analysed in terms of normal modes calculated from a force field for secondary dichlorides refined using this molecule as well as 2,2-dichlorobutane and 2,2-dichloropropane. A force field specific to the latter molecule is presented.

The transition metal-catalyzed reaction of 2H-azirines with 1,2,4-tricarbonyl compounds leads to 3-(1,2-dioxoethyl)- and 2,3-dicarbonyl-pyrrole derivatives, useful building blocks for the preparation of 3-heterocyclyl pyrroles and pyrroles fused with heterocycles. The influence of catalysts and ...

The degradation kinetics of fetindomide, a potential prodrug of mitindomide, was studied in aqueous solution at 25°C. The hydrolysis of dilute fetindomide solutions maintained between pH 2.5 and 4.5 followed apparent first-order kinetics over several half-lives. At higher pH values (5.0–8.5) t...

A stability indicating assay for fetindomide using reversed-phase high-performance liquid chromatography (HPLC) has been developed. The chromatography was performed on a MOS Hypersil (C8) column and was optimized by investigating the effects of methanol (7.5–20%), acetonitrile (5–7%), tetrabut...

The main objective of this paper is to find the effect of cupric nitrate [Cu(NO3)3] on progressive biogas production from cow dung. Efforts have been made to produce biogas within the retention period of 48 days. It has shown encouraging results in the increase of biogas production. By the addit...

Cupric nitrate minerals are rare, but when present may record evidence of past biological activity. The cupric nitrate minerals we examined from localities around the world are broadly divided into four main groups based upon their inferred conditions of formation and δ15N values. These groups,...

A novel strategy to synthesize copper-based nanoparticles supported on carbon nitride (C3N4) was developed by popping of mixture containing C3N4 and cupric nitrate. Characterizations such as X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) indicate that the structure of g-C3N4 ...

Inositol hexa phosphoric acid (IP6) or Phytic acid, a natural antioxidant of some leguminous plants, known to act as a protective agent for seed storage in plants by suppressing iron catalyzed oxidative process. Following the same mechanism, we have tested the effect of IP6 on iron overloaded in...

ObjectivesTo evaluate the effect of experimental conditioners (10–3 solution − 10–3, 6.8% ferric oxalate - FOX, and 1.4% nitric acid - NI) on dentin elastic modulus, flexural strength, bond strength, failure mode, and adhesive interface morphology of two etch-and-rinse adhesives (XP Bond, Dent...

Tunisian industries process enormous quantity of green phosphoric acid. The latter contains significant amounts of rare earth elements. This work highlights the extraction of numerous rare earth elements from concentrated green phosphoric acid solutions based on core-shell graphene [email protec...

Concentrated phosphoric acid issued from the “wet process” contains at least 19 different contaminants, among which are metal elements, that must be removed to obtain purified acid valuable in many applications. Nanofiltration of concentrated inorganic acids is an emerging application for NF t...

An ultrasensitive electrochemical biosensor is demonstrated for the detection of a synthetic single-stranded DNA (ss-DNA) with a detection limit down to femtomolar levels. The synthetic ss-DNA with sequence associated with the influenza A virus RNA was used as our model target DNA. The detection...

Dual-functional cupric oxide nanorods (CuONRs) as peroxidase mimics are proposed for the development of a flow-through, label-free chemiluminescent (CL) immunosensor. Forming the basis of this cost-efficient, label-free immunoassay, CuONRs, synthesized using a simple hydrothermal method, were de...

The kinetics of uncatalysed and Cu(II) ion-catalysed oxidation of ascorbic acid by molecular oxygen in the presence of citric acid and its anions were studied at 25°C. In the pH range investigated (2.5–6.0), the rate of cupric ion-catalysed oxidation was found to be first order with respect to...

Two novel fluorescent probes, 2‑(2′‑hydroxyphenyl)‑4‑(2′‑hydroxymethyl‑8‑quinolinamino)methyloxazole (L1), and 2‑(2′‑hydroxyphenyl)‑4‑(2′‑methyl‑8‑quinolinamino)methyloxazole (L2), exhibited colorimetric and “turn off” fluorometric response to Cu2+ ion in DMSO/H2O solution (v/v = 1/1, 0.01...

In this research, an analysis of the effect of NaOH and NH4OH on the silver sulfide leaching kinetics was performed using thiosulfate–copper solutions in the presence of EDTA and sodium citrate, in order to develop an alternative green hydrometallurgical process for the sustainable recovery of ...

A novel optic sensor was developed for screening the total antioxidant capacity based on the use of cupric – neocuproine (Cu(II)−Nc) immobilized into a polymethacrylate matrix (PMM) with spectrophotometric measurement. The absorption change associated with the formation of the colored Cu(I)−Nc ...

The integration of photocathodes with enzymatic label tracer for the development of amplified PEC immunoassays is attractive for different diagnosis applications. Herein, we induce a novel strategy for the construction of cathodic PEC immunoassay on the basis of enzymatic reaction inhibited exci...

Herein we combine the enzyme-nanoprobe induced biomineralization of cupric subcarbonate with a sensitive copper chromogenic reaction to develop an ultrasensitive colorimetric immunosensing method. The nanoprobe was prepared through the surface assembly of signal antibody and high-content urease ...

A citrate gel conversion coating on AZ31 magnesium alloy is developed. The conversion solution is composed of glycerin and the citrate gel, which is isolated by adding ethanol into sodium citrate aqueous solution. Microstructure characterization shows that the coating is about 200 nm thick and f...