Báo cáo khoa học: "Simultaneous Determination of Various Macrolides by Liquid Chromatography/Mass Spectrometry" pps

... mutation of Thr15 to Ala in the vicinity of the hydrophobic core induces a tighter binding of the cofactor in C. freundii TPL, thereby reducing the decomposition rate of the cofactor by a Pictet–Spen- gler ... in 200 mL of LB medium containing 100 lgÆmL )1 of ampicil- lin. The cells were then suspended in 5 mL of NaCl ⁄ P i , mixed with an equal volume of Cellytic BÔ, treate...

Ngày tải lên: 07/03/2014, 00:20

... DETERMINATION OF PARTS OF SPEECH 61 DETERMINATION OF PARTS OF SPEECH 63 TASK 2: TABULATION OF SPECIAL-PURPOSE WORDS WHICH ARE NOT COVERED BY RULES A, B, OR C For Task 2, a subset of ... a part of speech on the basis of the part -of- speech implications of the affixes and the length of the remaining kernel. An accuracy of 95 per cent is achieved from the p...

Ngày tải lên: 16/03/2014, 19:20

... times of 3.0 ms per step of 1 m/ z unit. Fragment ions formed by collision a ctivation of selected precursor ions with nitrogen in the R F-only quadrupole collision ce ll, were analyzed by scanning ... and analyzed by a MALDI-TOF mass s pectrometer (MALDI TM ;Micromass, Manchester, UK). Mass spectra were acquired for the mass range of 600–2000 Da under a pulsed nitrogen laser o...

Ngày tải lên: 23/03/2014, 13:20

... A number of SC are characterized by what I call an “X-factor.” It is this occurrence of X- factors which presents the main difficulty in the mechanization of the determination of the consti- ... forms of dual nationality which has been treated separately. The importance of the mechanization of this part of the identification process of MT lies in the fact that i...

Ngày tải lên: 23/03/2014, 13:20

... Growth in the size of the grammar as a fuaction of the size of thc text sample. X = the number of sentences (and sentence frag- ments) in the text sample; Y = the number of productions in ... the speed-up (by roughly a factor of 3) was approximately proportional to the reduction in the number of productions. In addition, the ~fyequcncy of bad parses decreased slightly...

Ngày tải lên: 24/03/2014, 01:21

... of oxidative phosphorylation not only by the ANT but also by other components of oxidative phos- phorylation. Furthermore, we tested parts of the above hypothesis by determining the effects of ... adversely affect cellular function by direct effects on a variety of enzymes and induction of apoptosis [4]. Tight regulation of intracellular concentrations of free LCACs b...

Ngày tải lên: 19/02/2014, 05:20

... 0.6 0.7 0.8 0.9 1 10 100 1000 10000 100000 1e+06 size(KB) recall precision 434 Proceedings of the COLING/ACL 2006 Main Conference Poster Sessions, pages 428–435, Sydney, July 2006. c 2006

Ngày tải lên: 20/02/2014, 12:20

... synthesis of PHCP by E. coli The E. coli System I cytochrome c biogenesis machin- ery, consisting of the Dsb and Ccm proteins, is respon- sible for the synthesis of class I cytochromes c even from various ... Determina- tion of the secondary structures of proteins by circular dichroism and optical rotatory dispersion. Biochemistry 11, 4120–4131. 16 Ren Z, Meyer T & McRee D...

Ngày tải lên: 06/03/2014, 00:20

... increased levels of c-Fos and basal levels of c-Jun. This idea is supported by the results of the ChIP assay, which indicated that both c-Fos and Fig. 2. Increases in the expression of total and ... was accompanied by increased expression of BimEL, following activation of extracellular signal-regulated kinase. The aim of this study was to charac- terize the mechanism underly...

Ngày tải lên: 06/03/2014, 00:21

... syn- thesized by mixing 1 mL of plactin-14 (1 mgÆmL )1 in water), 1 mL of dansyl chloride (4 mgÆ mL )1 in acetone) and 90 mg of NaCO 3 overnight at ambient temperature. Plactin-14–Sepharose was prepared by ... 3. Partial purification of plactin cofactor from bovine plasma Citrated bovine platelet-poor plasma (490 mL) was frac- tionated using the method described by Cohn et al. [2...

Ngày tải lên: 07/03/2014, 00:20