the analysis of diatom

Ngày tải lên: 22/12/2013, 12:59

... interconversion rates as a function of time of cold exposure, (b) comparison of the magnitudes of the various interconversion rates, and (c) lineup of the accessions with respect to their metabolic acclimation strategies. ... tol- erances of the accessions differed not only in terms of the absolute values but also in the progression of the acclimation process. This is an important outcome, as it allows estimation of the impact ... (unit: C 6 h )1 Æg )1 FW): r CO 2 !Suc ¼ r NetPhotosynthesis Àr CO 2 !Starch Ratesof net photosynthesis (r NetPhotosynthesis ) were calcu- lated as the average rate of carbon uptake during the first half of the light phase (n =...

Ngày tải lên: 14/02/2014, 22:20

Ngày tải lên: 17/02/2014, 20:20

... implementation. Indeed, when the results of analytic and empirical studies agree, we become strongly convinced of the validity of the algorithm as well as of the correctness of the process of analysis. Some ... expansions, are at the heart of the analysis of algorithms, and are the subject of Chapter 4. e use of asymptotic expansions may be viewed as a compromise be- tween the ideal goal of providing an ... proportional to N N. A full proof of this requires a careful model of the computer to be used in terms of the operations involved and the time they take, but the result holds under rather generous assumptions....

Ngày tải lên: 19/02/2014, 20:20

... to see the bottom of the meniscus), add 1 mL of starch indicator to the first ascorbic acid sample and titrate with the iodine solution. Note the change of the I 2 color as you swirl the flask ... called the titer -the number of mg of ascorbic acid which reacts with 1 ml- of iodine solu tion. This number is easily found from the I 2 concentration and the mass relationship in the reaction. ... b. What is the titer of the iodine solution ( mg asc/mL) ? 3. A sample of fresh grapefruit juice was filtered and titrated with the above I 2 solution. A 1 00 mL sample of the juice...

Ngày tải lên: 03/03/2014, 11:49

... minutes at 6000 rpm. The supernate was fil- tered with 0.45 µm filter and the filtrate was taken for HPLC analysis. By comparing the ratio of the peak area of the sam- ple to the internal standard ... correlation coefficient of 0.9992-0.9995. II. Validation The testing results of the interday and intraday run of four AHAs are listed in Table 2. The relative standard devia- tion of the interday and ... Calibration curves of four α -hydroxyacids were constructed in the range of 50-500 µg/mL and their correlation coefficients were in the range of 0.9992-0.9995. The relative standard deviations of four...

Ngày tải lên: 03/03/2014, 11:49

... small quantities in toothpaste. The triclosan was sufficiently chromatographically separated and the accuracy was sufficient for identification. The analysis of the triclosan in the presence of a concentrated ... used to remove the HPLC mobile phase and collect the sample for FT-IR analysis. The determination of components in dental and other cosmetic products is useful and often mandated by the manufacturer ... rotating the disk to the triclosan peak and taking a number of scans directly on the deposit. Figure 5 shows spectra taken from a) a single scan set, b) coaddition of spectral scan sets of the triclosan...

Ngày tải lên: 03/03/2014, 11:49

... suffer from the formation of new “cluster” species observed with the use of more reactive gases such as ammonia. The performance of CRC based ICP-MS instruments cannot, however, match the detection ... match the detection capability of the ShieldTorch System in high purity matrices. This application note deals only with the use of cool plasmas for the analysis of organics, and this technique ... extended the analytical capability of the technique to the determination of similarly low levels of metal contamination in organic solvents and other complex matrices. The new instrument hardware...

Ngày tải lên: 05/03/2014, 21:20

... sell the major share of their daily catch to the moneylender below the market price, therefore, it is almost impossible to get out of the vicious circle of indebtedness. This also hinders other ... end of the projects, stimulate the exchange of information between the project core teams and other stakeholders. The following sections provide an overview of the main technical areas where the ... By the end of the decade, there was a range of RRA methods and approaches available which then gave rise to participatory rural appraisal (PRA) at the beginning of the 1990s. In addition to these two,...

Ngày tải lên: 07/03/2014, 00:20

... Schematic drawing of the cloning of 12 different tTG regions. Reference numbers of the amino acid residues at the ends of the cloned sequences are shown. Ó FEBS 2002 Epitope mapping of anti-tTG Igs ... able to normalize the coating of these fragments to ELISA wells for a better interpretation of the reactivity of cloned antibodies and patients’ sera. The overall response of the cloned antibodies ... tested the reactivity of the tTG/1 and /2 fragments in the presence of either Ca 2+ or EDTA, but observed no effect. Comparison of human and GP tTG shows a limited number of differences in the amino...

Ngày tải lên: 08/03/2014, 09:20

... were 128 cases of noun followed by an -/n& form; in 116 of these the -/ng form was a participle, otherwise it was the head noun. (The other case flagged as ambiguous was of a possible ... sample definition and the triples the parser found in it. ABDOMEN 0 1 N THE PART OF THE BODY BETWEEN THE THORAX AND THE PELVIS (THE) pmod (PART) (ABDOMEN 0 1 N) lm (THE) (ABDOMEN 0 1 N) ... We extracted the set of intransitive verb definitions, suspecting that these would be the easiest to work with. This is the smallest of the four major 219 Semantic Analysis of Definitions...

Ngày tải lên: 08/03/2014, 18:20

... cor- responding to these two peptides were detected (Fig. 1b). The masses of the two intense signals to the right in the spectrum (Fig. 1c) matched those of the proinsulin-derived C-peptides 1 and 2. The mass ... errors on thep.p.m.levelwereobserved. Table 1. Measured and theoretical masses of the pancreatic islet pep- tides. The experimental masses agree well with the theoretical masses of the candidate ... and the detected fragments from the LC-nozzle-skimmer and LC-ECD FTICR MS experiments. The length of the peptides and the number of detected fragments in the fragmentation experiment reflects the...

Ngày tải lên: 17/03/2014, 10:20

... that there are no facts which refute the hypothesis of mental continuity, and that, on the other hand, this hypothesis affords a useful test of suggested theories as to the nature of mind. The ... or OBJECT of the desire, and is said to be the PURPOSE of any action resulting from the desire. We think of the content of the desire as being just like the content of a belief, while the attitude ... a certain set of habits in the use of words. The thoughts (if any) in the mind of the examinee are of no interest to the examiner; nor has the examiner any reason to suppose even the most successful...

Ngày tải lên: 20/03/2014, 00:20

... 2002 of internal cavities capable of containing water molecules in the homologous Rossman fold of the soluble members of the HAD superfamily (Fig. 5). We used the high-resolution structures of the L -2-haloacid dehalogenase ... hydrolysis. The second group, located in the membrane domain, almost connects the region homologous to the ion-binding site to the extra- cytoplasmic moiety of the molecule. The positions of the internal ... TC1_RABIT (see alignment of Fig. 1). Table 3 lists the 5 4 residues, together with the cavity they contact, and the effect of mutations on the kinetic properties and the coupling r atio between...

Ngày tải lên: 23/03/2014, 21:20

Ngày tải lên: 24/03/2014, 01:21

Ngày tải lên: 18/04/2014, 15:29

Ngày tải lên: 24/04/2014, 14:35