Inexpensive multi-walled carbon nanotubes (MCNTs) were prepared with 10–40 nm particle sizes and 9.0 m2g−1 surface area. Fenuron pesticide was removed in water using these CNTs with 100.0 µgL−1 concentration, 60 min contact time, 2.0 g L−1 dose, 7.0 pH, and 25 °C. 90% removal of fenuron pesti...

α-Methylcinnamaldehyde (2-methyl-3-phenyl-propen-2-al) is used in a variety of products such as balsamic compounds, cosmetics, flavors, perfumes, chewing gums, spice blends, soaps, mouth wash, detergents, shampoos and also as an intermediate for making the drug epalrestat. In this work, it was ...

Halobenzoquinones are a group of disinfection byproducts formed by chlorination of certain substances in water. However, to date, the identities of halobenzoquinone precursors remain unknown. In this study, the formation of 2,6-dichloro-1,4-benzoquinone (DCBQ), a typical halobenzoquinone, from 3...

The rapid interaction between o-tolidine and p-toluidine (π-donors) with the π-acceptors, e.g., 3,5-dinitrobenzoic acid (DNB) and 2,6-dichloroquinone-4-chloroimide (DCQ) results in the formation of 1:1 charge-transfer complexes as the final products, [(o-tolidine) (acceptor)] and [(p-toluidine...

Hyoscyamine 6β-hydroxylase (H6H; EC 1.14.11.11), an important enzyme in the biosynthesis of tropane alkaloids, catalyzes the hydroxylation of hyoscyamine to give 6β-hydroxyhyoscyamine and its epoxidation in the biosynthetic pathway leading to scopolamine. Datura metel produces scopolamine as t...

A sensitive and specific LC/MS/MS method for the determination of l-hyoscyamine was developed and validated over the linearity range 20–500 pg ml−1 with 1.0 ml of plasma using scopolamine as the internal standard. The API III-Plus LC/MS/MS was operated under the multiple reaction monitoring mod...

BackgroundERCP is often made difficult by duodenal motility. Glucagon is typically used to inhibit this motility. L-hyoscyamine is an antimuscarinic, anticholinergic agent shown to be a feasible intravenous alternative to glucagon.

The comparison of different modelling approaches Response Surface Methodology (RSM), Artificial Neural Network (ANN) and Kriging, let to develop a novel ANN-RSM combined approach has been applied to accurately predict the variation of hyoscyamine content and especially to statistically explore t...

ObjectiveEndoscopic retrograde cholangiopancreatography (ERCP) is a relatively complex procedure as compared with other endoscopy which needs longer duration, duodenal relaxation and good sedation. The aim of this study was to evaluate the efficacy and safety of magnesium sulphate as spasmolytic...

We developed a modified Quick, Easy, Cheap, Effective, Rugged, and Safe (CEN QuEChERS) extraction method coupled with liquid chromatography-electrospray ionization tandem mass spectrometry (LC-ESI+/MS-MS) to identify and quantify residues of three botanical alkaloids, namely, scopolamine, L-hyos...

For a fixed number field K, we consider the mean square error in estimating the number of primes with norm congruent to a modulo q by the Chebotarëv Density Theorem when averaging over all q⩽Q and all appropriate a. Using a large sieve inequality, we obtain an upper bound similar to the Barban–...

Epidemiological studies have identified that the risk of cardiovascular events increases due to the decreased levels of high density lipoprotein-cholesterol and the elevated levels of low density lipoprotein-cholesterol. Herein, we report a novel series of N,N-3-phenyl-3-benzylaminopropionanilid...

An imide ring-containing diamide–dianhydride, N-[3,5-bis(3,4-dicarboxybenzamido)phenyl]phthalimide dianhydride (1) was prepared by the reaction of trimellitic anhydride chloride with N-(3,5-diaminophenyl)phthalimide in a medium consisting of methylene chloride and pyridine. A series of new alte...

10α,20α-di(4-aminophenyl)calix[4]pyrroles were synthesized from the acid catalyzed cyclization of dialkyldipyrromethanes with p-nitroacetophenone and sequential hydrogenation of nitro group, which in turn reacted with several aromatic aldehydes and pyridinecarboxaldehydes as well as isocyanate...

The macroscopic interfacial healing behaviour in a series of urea-urethane networks as function of the hydrogen bonds and disulphides content is presented. The polymers were prepared with different crosslinking densities but with the same amount of dynamic covalent bonds (disulphide linkages). T...

A flexible bis(pyridylurea) ligand, 1,1′-[oxybis(2,1-phenylene)] bis(3-pyridin-3-ylurea) (L), has been synthesized and characterized. The interaction of L with ZnCl2 and CdCl2 has been investigated. In the structure of {[ZnLCl2]·2DMF}n (1), the flexible ligands bridge the ZnII centers to form ...

A series of five fluorescent ligands (L1–L5) for anions were designed and synthesized. Urea, thiourea, and cyanoguanidine moieties were chosen as the binding groups, while 3,5-bis(trifluoromethyl)phenyl, coumarin, and BODIPY were used as the chromophores. The cyanoguanidines L3–L5 were promptl...

A series of hydro- and organo-supergelators have been synthesised via coupling of simple bis aromatic-ureas via alkyl amide linkages. These bis amide-aromatic-ureas exhibited reduced critical gelator concentrations, improved gelator stability, mechanical and dye removal properties for potential ...

A new approach to anionophore design combines a trans-decalin scaffold with flexible o-phenylene bis-urea side-arms. The scaffold preorganises the side-arms, which can fold to encompass anionic substrates. A prototype has been synthesised by coupling an o-aminophenyl urea to a decalin bis-isocya...

Although various chemistries have been introduced into polyurethanes in order to obtain self-healing abilities, implementing these materials in applications requiring high strength is challenging as strong materials imply a limited molecular motion, but without movement of polymer chains self-he...