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EFFECT OF PLANT PHENOLIC ACIDS ON CELLULOLYTIC ACTIVITY OF MIXED RUMEN POPULATIONS
Ushida, K.,Watase, H.,Kojima, Y. Asian Australasian Association of Animal Productio 1990 Animal Bioscience Vol.3 No.1
Influences of plant phenolic acids and their possible metabolites(non-phenolic aromatic acids involved) in the rumen on the cellulolytic activity of mixed rumen populations were examined by a simple in vitro culture technique. Initial concentrations of aromatic acids were 1, 5, 10 and 20 mM/l. All the tested aromatic acids reduced microbial cellulose digestion especially at the higher initial concentration. P-Coumaric acid, ferulic acid and cinnamic acid, those having unhydrogenated propenoic side chain were more inhibitory than were 3-phenylpropinic acid and phloretic acid, those having hydrogenated propanoic side chain. Lag-time for cellulose digestion was prolonged by former three acids by 16 h. Apparent reduction in p-coumaric acid concentration was observed at 24 h when cellulose digestion began. Volatile fatty acid productions from cellulose fermentation were shifted by former three aromatic acids to produce more acetate and less propionate. This suggests that the selection of celluloytic organisms was induced by these aromatic acids.
The Embedment of a Metadata System at Grid Farms at the Belle II Experiment
S. Ahn,J. H. Kim,T. Huh,S. Hwang,조기현,H. Jang,B. K. Kim,H. Yoon,J. Yu,Z. Drasal,T. Hara,Y. Iida,R. Itoh,G. Iwai,N. Katayama,Y. Kawai,S. Nishida,T. Sasaki,Y. Watase,T. Uglov,R. Fruhwirth 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.4
In order to search for new physics beyond the standard model, the next generation of B-factory experiment, Belle II will collect a huge data sample that is a challenge for computing systems. The Belle II experiment, which should commence data collection in 2015, expects data rates 50 times greater than that of Belle. In order to handle this amount of data, we need a new data handling system based on a new computing model, which is a distributed computing model including grid farms as opposed to the central computing model using clusters at the Belle experiment. We have constructed a metadata system and embedded the system in the grid farms of the Belle II experiment. We have tested the system using grid farms. Results show good performance in handling such a huge amount of data.
Design of the Advanced Metadata Service System with AMGA for the Belle II Experiment
S. Ahn,K. Cho,S. Hwang,J. Kim,H. Jang,B. K. Kim,H. Yoon,J. Yu,Z. Drasal,T. Hara,Y. Iida,R. Itoh,G. Iwai,N. Katayama,Y. Kawai,S. Nishida,T. Sasaki,Y. Watase,R. Fruhwirth,W. Mitaroff,R. Grzymkowski,M. S 한국물리학회 2010 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.57 No.4
The Belle II experiment is expected to produce 50 times more data than the existing Belle experiment. Such huge data production requires not only scalability with respect to the storage service but also scalability regarding the metadata service. There has already been a metadata service at the Belle experiment, but it is not proper for the Belle II experiment because it has scalability problems and it is not intended to be used in a distributed grid environment. To deal with these issues, we designed an advanced metadata service system based on AMGA, which provides efficient and scalable metadata searching. We have built testbed sites to test the correctness, performance and scalability of the advanced metadata service system, and it has been proved to be able to provide efficient metadata searching for the Belle II experiment.