Báo cáo khoa học: " Dosimetric precision of an ion beam tracking system" pps

... developer conditions, differences between film batches, entrance position of the range telescope, W-value, and positioning of ionization chambers within the water phantom are not relevant because beam tracking ... standard deviation. Pin-point ionization chambers (absorbed dose) For the relative dose data of the ionization chamber array, mean, standard deviation, and maximum deviati...

Ngày tải lên: 09/08/2014, 09:20

... a mechanized system; of translation, and of out- put are interpreted in terms of an operational machine translation center. The use of machines to do high-volume, high-speed translation from ... disciplines, expansion of the center to greater capacity, or the creation of 110 [ Mechanical Translation , Vol.6, November 1961] The Parameters of an Operational Machine Tr...

Ngày tải lên: 16/03/2014, 19:20

... Electron Corporation, Waltham, MA, USA). The reactions were started by addition of substrate, and the rate of substrate oxidation was measured by monitoring the change in absor- bance over 5 min. All of the ... diffusion method. Two microlitres of protein solution at a concentration of 9 mgÆmL )1 and 2 lL of crystallization solution were equilibrated against 500 lL of reservoir...

Ngày tải lên: 14/02/2014, 18:20

... six-coordinate and had two nitro- gen(oxygen) donor ligands at an average distance of 1.90 A ˚ and four nitrogen(oxygen) ligands at an average distance of 2.06 A ˚ . Three of the four ligands were ... (1971) The kinetics and mechanisms of the reactions of iron(III) with b-dik- etones. The formation of monoacetylacetoatoiron(III) and the effect of copper (II) on the formation...

Ngày tải lên: 18/02/2014, 06:20

... fi Pro mutation at position 40 of LolC causes the outer membrane localization of lipoproteins possessing the inner membrane retention signal [22]. This may indicate the importance of LolC for ... method; incubation of subunits at 30 °C in the presence of phospholipids leads to the reconstitution of the functional LolCDE complex (Figs 3 and 4). On the other hand, various membrane ap...

Ngày tải lên: 19/02/2014, 00:20

... protein was exchanged into gel-filtration buffer by concentration and dilution and used at 10–20 mgÆmL )1 for crystallization studies. Crystallization, data collection and structure solution As described ... Rodolfo M, Daniotti M, Scarpa A, van Tilborg AA, Leenstra S, Zanon C & Bardelli A (2007) Novel somatic and germ- line mutations in cancer candidate genes in glioblas- toma, melanoma, a...

Ngày tải lên: 16/03/2014, 02:20

... catalyze formation and isomerization of disulfide bonds, and peptidyl-prolyl cis-trans isomerases (PPIases), which catalyze the cis-trans isomerization of peptide bonds N-terminal of the proline ... the change in the concentration of p-nitroaniline. The increase in the rate of isomerization is implicit in the increased rate of p-nitro- aniline release, because catalysis of isomer...

Ngày tải lên: 16/03/2014, 16:20

... different classes of proteins involved in a wide range of cell mechanisms, including regulation of ECM mineraliza- tion (n ¼ 1), cellular metabolism (n ¼ 8) and cell orga- nization and biogenesis ... exons (or part of exons) representing the coding sequence, starting from the translation initiation codon and ending at the translation termination codon. The phase of intron insertion...

Ngày tải lên: 23/03/2014, 07:20

... play an important role in ligand binding. Further functional analyses will help to answer these questions and to define the exact role of the OR18 subtype. The discovery of an original subtype of ... F C lst sc trachea ssty sst or Cuticule sc lst Fig. 5. Expression pattern of SlitOR18 in adult male antennae by in situ hybridization. (A) Scheme of a longitudinal section of two a...

Ngày tải lên: 29/03/2014, 22:21

... Expression and purification of the human INSL3 precursor. (A) Analysis of the expression of INSL3 precursor by tricine SDS ⁄ PAGE. Fifty microlitres of culture broth before and after IPTG induction ... precursor can be used as a template for structural and functional studies of INSL3 because it can be prepared through recombinant expression more conveniently and, as well, many analog...

Ngày tải lên: 30/03/2014, 01:20