This review is an attempt to retrace the chronicle that starts from the discovery of the role of
nickel as the essential metal ion in urease for the enzymatic catalysis of urea, a key step in …

Consideration of soil as a living ecosystem offers the potential for innovative and sustainable
solutions to geotechnical problems. This is a new paradigm for many in geotechnical …

The importance of nickel enzymes, where nickel serves as an essential cofactor, in Archaea,
bacteria, plants, and primitive eukaryotes, is well documented. 1 Despite the fact that no …

Nickel enzymes, present in archaea, bacteria, plants, and primitive eukaryotes are divided
into redox and nonredox enzymes and play key functions in diverse metabolic processes …

New series of 4, 5-disubstituted-2, 4-dihydro-3H-1, 2, 4-triazole-3-thiones (8a–j) and 2, 5-
disubstituted-1, 3, 4-thiadiazoles (9a–h) were synthesized by dehydrative cyclization of …

Urease, a nickel-dependent metalloenzyme, is synthesized by plants, some bacteria, and
fungi. It catalyzes the hydrolysis of urea into ammonia and carbon dioxide. Although the …

Transition metals are both essential to enzymatic catalysis and limited in environmental
availability. These two biological facts have together driven organisms to evolve …

In the past few years, the use of bacterial calcium carbonate precipitation has become
popular as a ground-improvement technique for sandy soil. However, this technique has not …

Urease, the most efficient enzyme known, contains an essential dinuclear NiII cluster in the
active site. It catalyzes the hydrolysis of urea, inducing a rapid pH increase that has negative …

Human excreta contain the same nitrogen, phosphorus and potassium (NPK) as the
fertilisers used to produce the food consumed. However, human excreta are considered …