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World Production (world + production)
Selected AbstractsBarnacle culture: background, potential and challengesAQUACULTURE RESEARCH, Issue 10 2010Daniel A. López Abstract There are approximately a dozen species of commercially interesting barnacles worldwide, some of which have been cultured on a semi-industrial scale. These species are listed and information is provided with regard to geographical distribution, landings and prices. Traditionally, ,goose' barnacles (four species) are considered to be the most important for consumption. World production already stands at 500 tonnes year,1, but this species has not been cultured to date. Some ,acorn' barnacles are also consumed (seven species), with harvest levels per species that do not exceed 200 tonnes year,1 and selling prices that can reach US$17/kg. ,Acorn' barnacle culture on a world scale is still developing. Nevertheless, production has occurred on a semi-industrial scale; specifically, spat have been collected from the wild and grown in suspended systems. Farming trials have focused on two species of acorn barnacles: Austromegabalanus psittacus (Molina 1782) ,picoroco' in Chile and Megabalanus azoricus (Pilsbry 1916) ,craca' in Portugal. The large-scale production of these crustaceans will depend on the optimization of spat collection from the wild and/or the parallel development of mass production technologies for larvae (hatcheries). In addition, further development will be achieved by opening up new markets for commercialization. [source] Jungle Law in the Orchard: Comparing Globalization in the New Zealand and Chilean Apple IndustriesECONOMIC GEOGRAPHY, Issue 4 2002Megan K. L. McKenna Abstract: Restructuring in the global apple market is leading to a pronounced tightening in the competitive spaces occupied by Southern Hemisphere producers. For New Zealand and Chile, the world's two most successful apple-exporting countries, significant challenges are presented by projected industry trends, such as declining profitability in the global industry, increased world production, and the continued static demand in key markets. In particular, falling prices in Europe and North America for many key varieties and concomitant lower returns to growers are threatening serious and pervasive impacts. This article explores some of these challenges in the context of the significantly different positions occupied by New Zealand and Chile within the global fresh fruit and vegetable complex. An analysis of the two countries' industries, particularly comparing issues of regulation and innovative varietal development, shows that global food complexes have highly variable spatial expressions, given their process-based nature and underlying dynamics of contestation. Focusing on the increased competition between the New Zealand and Chilean apple industries, the discussion sheds light on wider emerging competitive dynamics within the global fruit industry. The example of the recent Pacific Rose crisis, which involved Chilean "theft" of an exclusive New Zealand apple variety, is used to illustrate the emergence of "jungle law" in the Southern Hemisphere apple industries. [source] Global Restructuring and Liberalization: Côte d 'Ivoire and the End of the International Cocoa Market?JOURNAL OF AGRARIAN CHANGE, Issue 2 2002Bruno Losch The restructuring of the world cocoa market has concluded with the liberalization of the sector in the world's leading producing country, Côte d'Ivoire, clearing the way for domination by an oligopoly of global companies. This paper describes how Côte d'Ivoire's share of world production created an illusion but not the reality of market power. In the 1990s, in the wake of failed attempts to influence the world market, the Ivorian cocoa sector experienced a series of upheavals that were both pivotal to broader changes in the global market and a refiection of them. The converging strategies of new Ivorianfirms and of the major global grinding companies resulted in increased vertical integration in Côte d'Ivoire, exemplified in the development of ,origin grinding '. Later, financial difficulties encountered by Ivorian firms led to global companies taking control. Amongst the results of these changes are a decline in the role of traders, a redefinition of the relationship between grinders and chocolate manufacturers, and a standardization of cocoa quality around an average ,bulk' level. This signals the end of ,the producing countries' and of the global market. [source] From Fundamental Polymerization Kinetics to Process Application,A Realistic Vision?,MACROMOLECULAR CHEMISTRY AND PHYSICS, Issue 5 2010Christian Bauer Abstract This contribution presents a ramble through the past, inspecting the developments of fundamental scientific investigations into the elementary reaction steps of polymerizations. Often the question arises whether benefits from fundamental scientific investigation find their way into industrial practice and how these pay off in better understanding large-scale processes. The high-pressure ethene polymerization is the system of interest here because 1) it is a complex process with a world production of several million tons per year and 2) although dealing with system pressures up to 3000,bar is not an easy task, a long history,if not tradition,exists between the scientific efforts to improve the process and the research groups of Franck and Buback in Karlsruhe, Schönemann and Luft in Darmstadt, and later Buback in Göttingen. The scope of this discussion will range from non-invasive on- and in-line monitoring by spectroscopic methods up to process modeling by advanced kinetic models and their potential for explorative work. [source] Moniliophthora perniciosa, the causal agent of witches' broom disease of cacao: what's new from this old foe?MOLECULAR PLANT PATHOLOGY, Issue 5 2008LYNDEL W. MEINHARDT SUMMARY Moniliophthora perniciosa (=Crinipellis perniciosa) causes one of the three main fungal diseases of Theobroma cacao (cacao), the source of chocolate. This pathogen causes Witches' broom disease (WBD) and has brought about severe economic losses in all of the cacao-growing regions to which it has spread with yield reductions that range from 50 to 90%. Cacao production in South America reflects the severity of this pathogen, as the yields in most of the infected regions have not returned to pre-outbreak levels, even with the introduction of resistant varieties. In this review we give a brief historical account and summarize the current state of knowledge focusing on developments in the areas of systematics, fungal physiology, biochemistry, genomics and gene expression in an attempt to highlight this disease. Moniliophthora perniciosa is a hemibiotrophic fungus with two distinct growth phases. The ability to culture a biotrophic-like phase in vitro along with new findings derived from the nearly complete genome and expression studies clearly show that these different fungal growth phases function under distinct metabolic parameters. These new findings have greatly improved our understanding of this fungal/host interaction and we may be at the crossroads of understanding how hemibiotrophic fungal plant pathogens cause disease in other crops. Historical summary of WBD:, The first WDB symptoms appear to have been described in the diaries of Alexandre Rodrigues Ferreira (described as lagartão; meaning big lizard) from his observations of cacao trees in 1785 and 1787 in Amazonia, which is consistent with the generally accepted idea that M. perniciosa, like its main host T. cacao, evolved in this region. The disease subsequently arrived in Surinam in 1895. WBD moved rapidly, spreading to Guyana in 1906, Ecuador in 1918, Trinidad in 1928, Colombia in 1929 and Grenada in 1948. In each case, cacao production was catastrophically affected with yield reductions of 50,90%. After the arrival of M. perniciosa in Bahia in 1989, Brazil went from being the world's 3rd largest producer of cacao (347 000 tonnes in 1988,1990; c. 15% of the total world production at that time) to a net importer (141 000 tonnes in 1998,2000). Fortunately for chocolate lovers, other regions of the world such as West Africa and South East Asia have not yet been affected by this disease and have expanded production to meet growing world demand (predicted to reach 3 700 000 tonnes by 2010). Classification:,Moniliophthora perniciosa (Stahel) Aime & Phillips-Mora: super-kingdom Eukaryota; kingdom Fungi; phylum Basidiomycota; subphylum Agaricomycotina; class Agaricomycetes; subclass Agaricomycetidae; order Agaricales; family Marasmiaceae; genus Moniliophthora. Useful websites:,http://www.lge.ibi.unicamp.br/vassoura/, http://nt.ars-grin.gov/taxadescriptions/keys/TrichodermaIndex.cfm, http://www.worldcocoafoundation.org/info-center/research-updates.asp, http://www.ars.usda.gov/ba/psi/spcl [source] Techno-Economic Analysis of Hydrazine Hydrate TechnologiesCHEMICAL ENGINEERING & TECHNOLOGY (CET), Issue 9 2010P. Nikhitha Abstract The increasing demand of current world production for hydrazine hydrate emphasizes the need to focus on the techno-economic analysis of the existing technologies. Three processes, namely the Raschig process, urea process, and peroxide-ketazine process, are chosen for technical analysis followed by cost estimation and economic assessment. The technical part involves the development of flow sheets, process design, carrying out of calculations as well as estimation of raw materials, labor, utilities, and process equipment by sizing and other sub-components. The economic part comprises the estimation of working capital, fixed capital investment, total capital investment, and total production costs. Economic parameters like net profits, rate of return, payback period, and break-even point are also estimated to perform economic analysis. The results obtained from technical analysis and economical feasibility studies show that the peroxide-ketazine-based hydrazine hydrate technology has clear advantages in terms of raw material consumption and economic competitiveness. [source] | ||||||||||