Author
Jeffrey K. Seadon
Other affiliations: Scion, Massey University, University of Auckland ...read more
Bio: Jeffrey K. Seadon is an academic researcher from Auckland University of Technology. The author has contributed to research in topics: Sustainability & Procurement. The author has an hindex of 8, co-authored 12 publications receiving 530 citations. Previous affiliations of Jeffrey K. Seadon include Scion & Massey University.
Papers
More filters
TL;DR: In this article, a sustainable waste management system incorporating feedback loops, is focused on processes, embodies adaptability and diverts wastes from disposal is examined in the light of producing more sustainable practice.
261 citations
TL;DR: The concept of integrated waste management as defined by UNEP is considered, along with the parameters that constituteintegrated waste management, and these advance the path to sustainability.
121 citations
TL;DR: In this paper, X-ray analysis showed that the crystalline compounds (Me4N)2[Cu4(SMe)6] (1), Me4N 2[CuI4-Octahedro-(SR)6]-2− cage all contain the [tetrahedro-CuI 4-octahedron-(SR)-6]2− molecular cage, and the stereo-chemical analysis was extended to all known instances of this cage structure and to alternative cage structures.
65 citations
TL;DR: In this article, the molecular cage of Cu5(μ-SBut)6 has been shown to have a trigonal bipyramido-Cu5-trigonal antiprismo-S6 structure.
43 citations
TL;DR: In this article, the whole-of-life role of timber in future urban developments as a contributor to balance urban carbon emissions is considered using a new concept of Urban Equilibrium, defined as the situation where buildings in an urban environment act as a balancing agent for the greenhouse gas emissions of the urban area; therefore the buildings act like carbon pools.
34 citations
Cited by
More filters
TL;DR: The importance of founding new SWM approaches for developing country contexts in post-normal science and complex, adaptive systems thinking is demonstrated.
640 citations
592 citations
TL;DR: In this article, the authors define three types of thiolato-complexes: terminal, monomeric, and sterically hindered, and three-dimensional clusters with tetrahedral metal centres.
458 citations
TL;DR: In this article, the authors discuss the challenges for life cycle assessment arising from the complexity of food systems, and recommend research priorities for both scientific development and improvements in practical implementation, including addressing issues related to: the distinction between technosphere and ecosphere; the most appropriate functional unit; the multi-functionality of biological systems; and the modelling of the emissions and how this links with life cycle impact assessment.
407 citations
TL;DR: It is concluded that the long sought role of MT lies in the control of the cellular zinc distribution as a function of the energy state of the cell and not in the widely held belief that MT primarily scavenges radicals or detoxifies metals.
Abstract: Metallothioneins (MTs) define a superfamily of ubiquitous cysteine-rich low molecular weight proteins or polypeptides that contain polynuclear metalsulfur coordination sites formed by metal ions with d10 configuration. The most prominent characteristics of these biomolecules, which have been discovered as a cadmium and zinc containing protein in horse kidney by Margoshes and Vallee in 1957,1 are their extremely high metal and sulfur contents (up to 10% w/w). Although MTs have been known as long as about half a century, their precise physiological function is still under debate. According to Kägi and Schäffer, they are thought to play roles both in the intracellular fixation of the essential trace elements zinc and copper, in controlling the concentrations of the free ions of these elements, in regulating their flow to their cellular destinations, in neutralizing the harmful influences of exposure to toxic elements such as cadmium and mercury, and in the protection from a variety of stress conditions.2 More recently, it was concluded by Maret and Vallee that the long sought role of MT lies in the control of the cellular zinc distribution as a function of the energy state of the cell and not in the widely held belief that MT primarily scavenges radicals or detoxifies metals.3 As can be learned by these speculations, investigations directed to explore the structure and chemistry of metallothioneins in greater detail are extremely important taking into account that nature makes use of them as multipurpose proteins. Several reviews covering this issue are available in the literature.4 Today, MTs are known to occur in all animal phyla examined so far as well as in certain fungi, plants, and cyanobacteria. Characterized by a low molecular mass of 6.000-7.000 amu, by 20 totally conserved cysteines out of a total of 61 or 62 amino acid residues (according to ca. 30% by number), without aromatic amino acids such as tyrosine or histidine, the apoprotein from rat liver (thionein) is able to bind a total of seven equivalents of divalent metal ions with d10 configuration such as Zn2+ or Cd2+ in two noninteracting domains. After demetalation, these proteins can be loaded with up to six Cu1+ ions in each domain.5 * To whom correspondence should be addressed. (G.H.) Tel +495251-60-2494. Fax +49-5251-60-3423. E-mail biohenkel@ uni-paderborn.de. (B.K.) Tel +49-251-833-3131. Fax +49-251-8338366. E-mail krebs@uni-muenster.de. † Universität Paderborn. ‡ Universität Münster. 801 Chem. Rev. 2004, 104, 801−824
365 citations