76 research outputs found
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Incorporating Deposit Ageing into Visualisation of Crude Oil Preheat Train Fouling
Funder: University of CambridgeAbstract: Fouling is an acute problem in crude oil preheat train heat exchangers as it affects the thermal and hydraulic performance of individual units as well as the network. Ageing of fouling deposits complicates these interactions and effective tools for visualising these effects are needed. The modified temperature field plot construction, devised by Graham Polley and co-workers in 2002, allows the impact of fouling on pressure drop and heat duty across individual units and the preheat train to be presented in a systematic way. The simple deposit ageing model of Ishiyama et al. (AIChEJ 56:531â545, 2010a) was incorporated into the analysis of a simple preheat train based on that presented by Panchal and Huang-Fu (Heat Transfer Eng 21:3â9, 2000) to calculate the impact of ageing on fouling dynamics and network performance. The modified temperature field plot is shown to be effective in communicating the impact of fouling and ageing, allowing a designer or operator to be able to interpret correctly what might otherwise be conflicting trends or unexpected behaviour
Development of Proficiency Testing for Detection of Irradiated Food: Project E01068. Results of First Round PSL Trials, September 2005
Development of Proficiency Testing for Detection of Irradiated Food: Project E01068. Results of Second Round PSL and TL Trials, September 2006
Quantificação de propågulos de Gibberella zeae no ar e infecção de anteras em trigo
DepressĂŁo endogĂąmica e heterose de hĂbridos de populaçÔes F2 de milho no estado de SĂŁo Paulo
Associação da ocorrĂȘncia do ectima contagioso (ORF vĂrus) em ovinos com os cuidadores desses animais
Nucleosomes in gene regulation: theoretical approaches
This work reviews current theoretical approaches of biophysics and
bioinformatics for the description of nucleosome arrangements in chromatin and
transcription factor binding to nucleosomal organized DNA. The role of
nucleosomes in gene regulation is discussed from molecular-mechanistic and
biological point of view. In addition to classical problems of this field,
actual questions of epigenetic regulation are discussed. The authors selected
for discussion what seem to be the most interesting concepts and hypotheses.
Mathematical approaches are described in a simplified language to attract
attention to the most important directions of this field
Microbiological analysis and sensitivity profile of Staphylococcus spp. in subclinical mastitis of dairy goats
Anålise da variabilidade espacial de pontos amostrais da curva de retenção da ågua no solo
Infecção por Corynebacterium pseudotuberculosis em equinos: aspectos microbiolĂłgicos, clĂnicos e preventivos
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