báo cáo khoa học: " Accumulation of phenanthrene by roots of intact wheat (Triticum acstivnm L ) seedlings: passive or active uptake?" pot

... original work is properly cited. Research article Accumulation of phenanthrene by roots of intact wheat ( Triticum acstivnm L. ) seedlings: passive or active uptake? Xin-Hua Zhan 1 , Heng-Liang ... to uptake of ions by plant roots, mechanisms for uptake of non-ionic organic chemicals like PAHs still remain poorly understood. Chemicals may enter plant roo...

Ngày tải lên: 12/08/2014, 03:21

... dependence of the catalytic activity and binding of the low-molecular mass inhibitor N-a-(2- naphthylsulfonyl-glycyl)-4-amidinophenylalanine-piperidine (a-NAPAP) to the wild-type (WT) and DK9 ... N-a-(2-naphthylsulfonyl-glycyl)-4-amidinophenylalanine-piperidine; Bis-Tris, (2-hydroxyethyl)iminotris(hydroxymethyl)methane; CHES, 2-(N-cyclohexylamino)ethanesulfonic acid; ED, essential dynamic...

Ngày tải lên: 07/03/2014, 12:20

... and word class assignment of words with a word init.ial capital automatic. All entries in the 296 GRAMMATICAL ANALYSIS BY COMPUT~ OF THE LANCASTER-OSLO/BERGEN (LOB) CORPUS OF BRITISH ~NGLISH ... probabilities (originally this was the frequency of potential tag A followed by potential tag B divided by the frequency of A. Subsequently, it was changed to the frequency o...

Ngày tải lên: 08/03/2014, 18:20

... could be related to the presence of a proline in the heterologous sequence. The presence of this residue is not favorable for the formation of stable a-helices. The collapse of helix a1 probably disturbs ... Huygen 4 and Moreno Galleni 1 1 Biological Macromolecules and Laboratory of Enzymology, Centre d’Inge ´ nierie des Prote ´ ines, University of Lie ` ge, Belgium 2 Laboratoire...

Ngày tải lên: 30/03/2014, 02:20

... all below the detection threshold (Table 4). Samples from farms All field samples of faeces (11 4) except one, soil (8 4) and silage ( 4) were below the detection threshold of the PCR method for ... bacteria col- lected with a 10 L loop) was collected from each FAA plate by a streak over the swarming flora (mixed, non-dis- crete colonies). The loopful was used for DNA prepa...

Ngày tải lên: 12/08/2014, 18:22

... pTB701–FLAG– RBCK2DUBL (5 lg) or pTB701–HA–S5a (2 lg) by electro- poration, and cultured for 48 h. When MG132 was applied, the cells were pretreated with 50 lm MG132 at 37 °C for 4 h. The cells were washed ... inhibitor cocktail (Roche, Basel, Switzerland)]. The cleared lysates (10 lL) were mixed with an equal volume of Laemmli’s sample buffer, and subjected to SDS ⁄ PAGE. The samples w...

Ngày tải lên: 29/03/2014, 22:21

... K M ) Cav Arg Cav Arg Cav K M (lM) k cat ⁄ K M (M )1 Æmin )1 ) K M (lM) k cat ⁄ K M (M )1 Æmin )1 ) K M (lM) k cat ⁄ K M (M )1 Æmin )1 ) K M (lM) k cat ⁄ K M (M )1 Æmin )1 ) Jack bean 19.6 1.0 ND a ND ... Belgium). The source of other chemicals was as follows: l- homocitrulline (Advanced Asymmetrics, Millstadt, IL, USA), l- albizziine (2-ami...

Ngày tải lên: 18/02/2014, 13:20

... mechanistic scaffold for the alternating catalytic cycle of ATP binding and hydro- lysis of TAP. Materials and methods Cell lines and cell culture T2 is a human lymphoblastoid cell line that lacks both ... deletions that simultaneously eliminate expressionsofclassIandclassIIantigensofEBV-tansformed B-lymphoblastoid cells. I. Reduced proliferance responses of autologous and allogeneic T...

Ngày tải lên: 20/02/2014, 02:21

... models and using a model ensemble Sebastian Spiegler Intelligent Systems Laboratory, University of Bristol, U.K. spiegler@cs.bris.ac.uk Peter A. Flach Intelligent Systems Laboratory, University of ... word list in order to find multiple pre- and suffixes. A comparison of different levels of supervision for morphology learning on Zulu has been carried out by Spiegler et al. (200 8)....

Ngày tải lên: 20/02/2014, 04:20

... slight shift to the membrane-bound fraction, particularly by 4L1 (Table 2). This change in intracellular distribution with all chelators suggests they act intracellularly as well as extracellularly. ... typical hepatoma cell line (Q 7). There was no obvious morpho- logical change detected by phase contrast microscopy and only 1–6% of cellular AST was released under all conditions b...

Ngày tải lên: 20/02/2014, 11:20