121,906 research outputs found
(4-Nitrophenyl 1,3,5,8,12-pentaazacyclotetradec-3-yl ketone-N1,N5,N8,N12)copper(II) Dinitrate
No full textIn the crystal structure of [Cu(C16H26N6O3)]NO32, the metal ion lies in an elongated octahedral coordination. Only the four secondary amine N atoms of the macrocycle are bound to the Cu2+ centre which resides 0.080 (1) Å out of the N4 donor plane. The coordination sphere is completed by two nitrate O atoms axially coordinated with different Cu-O distances
Trimethoprim-sulfadimidine 1:2 molecular complex monohydrate
No full textTrimethoprim [5-(3,4,5-trimethoxybenzyl)pyrimidine-2,4diamine, TMP] interacts with one sulfadimidine [4-amino-N-(4,6-dimethyl-2-pyrimidinyl)benzenesulfonamide, SDMD] molecule through two hydrogen bonds forming an eight membered ring, as in the 1:1 methanolate complex, with no proton transfer from the imino sulfonamide N atom to the pyrimidine N atom of the partner. Association with the second sulfadimidine molecule (SDMD') occurs through an interaction involving the same pyrimidine N atom of TMP (which therefore acts as a double acceptor) and the NH imino group of the sulfonamide. The water molecule bridges the sulfonamido O atom and the p-aminophenyl group of SDMD' of two molecular complex units
Italy: from quantity to quality
No full textThe book “The World’s Wine Markets - Globalization at Work” edited by Kym Anderson provides a comprehensive overview of the global wine industry. The book has two primary components. The first evaluates trends in global wine production, consumption, and trade. The second evaluates these trends for major wine-producing and wine-consuming countries. The book offers a detailed analysis of the wine industry at the beginning of the XXI century focusing the factors that should influence the future direction of such industry, in the framework of an increasing complexity of the competitive scenario, as the geography of production and consumption is rapidly evolving.
Indeed, the book including an in-depth look at the growth and impact of New World wine production on the Old World producers, reveals that between 1990 and 2001, the New World’s combined share of world wine exports grew from 4 to 18 per cent, or from 10 to 35 per cent when intra-European Union trade is excluded. Original essays, by economists from each of the major wine producing and consuming regions in the world, analyse recent developments and future trends, and conclude that globalization of the industry is set to continue for the foreseeable future. Furthermore they argue that with increasing globalization, there is a greater need than ever for systematic analysis of the world’s wine markets.
Inside the book, the chapter Italy (A. Corsi; E. Pomarici; R. Sardone) is structured in three parts. The first one offers a detailed view of the evolution of the Italian wine sector from 1970 to 2000. The second analyses the structure of the Italian wine sector, focusing wine-growing, winemaking and wine distribution and consumption. The third part analyses the international competitiveness of Italian wine sector; using the Traill and Pitts approach (1998) to the analysis of competitiveness in the food industry are identified the factors which determines the export performance and are outlined the condition for a further enhancement of competitiveness.
The whole book is structured as follow:
Part I: Overview
1. Introduction
2. The Global Picture
Part II: The Old World
3. France
4. Italy
5. Spain and Portugal
6. Germany
7. The United Kingdom
8. The Nordic Countries
9. Eastern Europe and the Former Soviet Union
Part III: The New World
10. North America
11. South America
12. South Africa
13. Australia
14. New Zealand
Part IV: Other Emerging Markets
5. East Asia
Autors involveded are: L.M. Albisu, J.M. Alston, K. Anderson, E. Auriol, J. Bentzen, H. Bombrun, C. Chen, A. Corsi, R. Farrell, C. Findlay, W. Foster, D. Heien, M. Hulot, K. Kilov, J. Kirsten, J.-B. Lesourd, L. Lockshin, M. Mikic, N. Noev, D. Norman, E. Pomarici, R. Sardone, G. Schamel, S.G.M. Schilizzi, V. Smith, A.L. Spawton, S. Stening, K. Storchmann, D.A. Sumner, J.F.M. Swinnen, A. Valdés, N. Vink, D. Wang, G. Williams, G. Wittwe
Relative and absolute stereocontrol in intramolecular nitrone cycloadditions to the cyclohexene ring
No full textMetal complexes of Imazapyr, a herbicide provided with efficient metal-chelating ability: crystal structure of the cobalt(III) and manganese(II) complexes
No full textThe complexes formed by the imidazolinone herbicide Imazapyr, (+/-)-2-(4-isopropyl-4-methyl-5-oxo-4,5-dihydro-1H-2-imidazol-2-yl)nicotinic acid (Imz) with Co(III), Mn(II), Co(II) and Ni(II) ions are described. The compounds [Co(Imz)(3)]. 3H(2)O and [Mn(Imz)(2)]. 2H(2)O were characterized by single-crystal X-ray analysis. [Co(Imz)(3)]. 3H(2)O crystallizes in the trigonal space group R-3 with a = b = 17.485(2), and c = 26.257(7) Angstrom, alpha = beta = 90 and gamma = 120 degrees, Z = 6. The cobalt ion is hexa-coordinated, being surrounded by three bipy-like chelating ligands. Noticeably, although Imazapyr acts as a mononegative anionic ligand, the imidazolinone moiety binds the metal through the lactam nitrogen. The finding supports an isomeric form for the Imazapyr(-1) anion where the lactam site is deprotonated. This feature is most probably imposed by the strong intramolecular bond between the imidazole and the carboxylate sites sharing a proton. [Mn(Imz)(2)]. 2H(2)O crystallizes in the monoclinic space group P2(1)/c with a = 10.584(5), b = 11.633(2), and c = 13.072(6) Angstrom, alpha = 90, beta = 108.63(2) and gamma = 120 degrees, Z = 2. The structure consists of a polymeric three-dimensional network in which each metal ion is surrounded by two couples of nitrogen atoms belonging to two mutually trans ligands and two monodentate carboxylate groups from two further ligands. Each Imazapyr(-1) anion acts as a bridging ligand in as much as it binds a metal ion through the bipy-like couple of pyridine and lactam nitrogens and another through the carboxylate group. Based on the spectral properties, the Co(II) and Ni(II) derivatives adopt the same structure as [Mn(Imz)(2)]. 2H(2)O. (C) 1998 Elsevier Science S.A. All rights reserved
Optimisation-driven design in the architectural, engineering and construction industry
No full textDigital tools and services relying on digital technology are becoming more pervasive, and are widespread in many different stages of the design process of structures. In this study, design optimisation from the perspective of architectural and structural engineering design is explored. Although, until recently, optimisation was recognised as a ‘tough’ mathematical tool, its evolution in terms of usability and efficiency have made it attractive for improving architectural design from the earliest stages of the design approach. Specialised digital tools that are able to support all structural engineering optimising requirements are somewhat difficult to develop; instead, customised structural design optimisation services have recently appeared. This work presents different strategies for parametrising distinctive variables involved in the definition of each architectural synthesis, which are defined as the main goal in architectural design optimisation and the structural design optimisation. A review of optimisation processes and optimisation tools in the field of architecture, engineering and construction is then provided. Recent paradigms from the built environment where parametric optimisation procedures have been applied in real-world design practice are also presented
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