the structure and interpretation of computer programs mit

Ngày tải lên: 05/04/2014, 01:31

Ngày tải lên: 13/08/2014, 16:20

... W,is simply the sum ofthe body mass of all individuals. For organisms ofsimilar size, it can be estimated by taking the product of the population, N,andthebodymass, M. Similarly, the store of each ... obvious. We asked the author(s) of each paper to examine the importance and role of body size in the systems in which they work. Essentially the book builds from the level of the individual and a consideration ... level to the flux, storage and turnover of these elements at the level of ecosystems. Our second example concerns the role of metabolism in trophic relationships, including the structure and dynamics...

Ngày tải lên: 17/02/2014, 19:20

... resemble teardrops [32]. Further examination of the structure and sequence of sbwAFP and TmAFP reveal other similarities (Fig. 8 C). The panel shows the similarity of the TXT face again, a nd also ... determine the handedness of the proteins, or may prevent the unfolding of the protein at cold temper- atures. The b-helix as an AFP structural motif? The sbwAFP and TmAFP structures represent the first AFPs ... of X-ray structure with 5 °C NMR structure using the main chain of residues Ser12 fiThr70 in t he structure a lignment. (B) O verlap of the X-ray structure with the 30 °C NMR structure using the main...

Ngày tải lên: 19/02/2014, 16:20

... orm of b strand [18]. The positive bands at » 1675 cm )1 in the amide I r egion of the ROA spectra of b-andj-casein, which originate mainly in the peptide C  O stretch, are characteristic of ... (although there is a hint) in the ROA spectra of b-andj-casein may be evidence that, as suggested previously [3], the b -structure identi®ed above mainly t akes the f orm of unassociated b strands rather ... positive ROA at » 1320 cm )1 to PPII structure relies mainly on the evidence outlined above. In view of the c lose similarity of the ROA spectra of the casein, synuclein and tau proteins shown in t his...

Ngày tải lên: 21/02/2014, 15:20

... model of the role of point of view in problem solving. SUMMARY We have reported here a three pronged approach to the study of problem solving action and report: I) the collected of data ... solving and talk about problem solving, 2) development of a process model of these behaviors, and 3) use of coding techniques to extract traces of "critical phenomena" from the transcripts ... relltld ~O the ~r~romnoe oF 5he problem tooK, lad o~here tt~c are oZoeely related to the report of the task aoClona. ~n the psr~lo,,~ar problem demean of the H~aeionsr£ee and CannLbae8 pusxle,...

Ngày tải lên: 21/02/2014, 20:20

... parts of a leaf are the tip of the blade and the top of the sheath. Where the blade and sheath join, there are structures called the ligule and the auricles (Figure 2.3). Table 2.1 – Shoot structures ... EFFICIENCY Tim Setter and Peter Carlton The structure of the wheat plant described in this chapter is the starting point to understanding the growth and development of the crop, its nutrition and the reasons for ... uptake into the plant is occurring, and is greater away from the plant roots. Because there is more of the element away from the root, most of the elements will move to the root. Therefore, the net...

Ngày tải lên: 08/03/2014, 23:20

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Ngày tải lên: 12/12/2013, 00:15

... between the Leu residues from v-KIND and MAP2 contributes to the interaction between the two proteins. In conclusion, the present study has clarified the structural and functional importance of the ... and 482) and one Thr residue (amino acid 487) were well conserved in the KIND2 of v-KIND in all species analyzed, although not in the other KINDs. To investigate the possible involvement of these ... under- stood, the data obtained in the present study indicate that the 43 residues (amino acids 702–744 in mice) that reside in the middle region of the CD act as the v-KIND binding core. The v-KIND-binding...

Ngày tải lên: 14/02/2014, 19:20

... differently to these caps due to the short air pollutant lifetimes and dominance of northern over southern hemispheric emissions (Figs. 4b and 4c). The northern hemisphere contributes the most to the global ... global-average; (b) southern hemispheric; and (c) northern hemispheric concentrations. REPORT SERIES of the MIT Joint Program on the Science and Policy of Global Change Contact the Joint Program Office to ... simple addition of the SO x -capped and CO/VOC/NO x -capped cases. Nevertheless, the capping of CO, VOC and NO x serves to reduce the warming induced by the capping of SO x . Note that these climate...

Ngày tải lên: 17/02/2014, 22:20

... basis for structure- activity studies. The high selectivity of the a-conotoxins, together with the possibility of obtaining detailed information on their three dimen- sional structures and the relative ... native and heterologously expressed nAChRs The examples presented above clearly demonstrate the usefulness of a-conotoxins in the determination of the structure and function of native nAChRs, and ... so far. The great variability of the conotoxins and their highly specific action on different ion channel subtypes derives from the structure of the peptides which have evolved conserved and hypervariable...

Ngày tải lên: 19/02/2014, 12:20

... Fragments of HSQC and HMBC spectra of compound 1. Labels illustrate assignment of the amide linkage between the amino group of Asp and the carboxyl group of GalA residue E. Scheme 1. The structures of ... acilitate studies otherwise limited by the amount of cell mass, a problem often limiting studies on other spirochetes [2]. We describe here the structural characterization o f the carbo- hydrate s keleton and ... min), dried and analyzed by GC-MS with the standards prepared from D -GalN and (R)- and (S)-2-BuOH. The absolute configuration of L -aspartic acid was deter- mined by chiral HPLC of the oligosaccharide...

Ngày tải lên: 19/02/2014, 16:20