describe the process of photosynthesis the role of the chloroplasts

... the projection of energy band in bulk Si and confinement effect: the confinement decreases the energy of HO states and in- creases the energy of the LU states, but the magnitude of the en- ergy shift ... direction. The HRTEM has also observed the hexagonal nanowire shape which consists of {001} and {111} facets. On the other hand, re- cent theoretical investigations have investigated the effect of the nanowire ... E tot is the total energy of nanowire in the supercell, l Si ( l H )is the chemical potential of an Si (H) atom, n Si (n H ) is the number of Si (H) atoms, and e z is the zero-point energy of Si–H...

Ngày tải lên: 16/03/2014, 15:37

Ngày tải lên: 08/08/2014, 16:23

Ngày tải lên: 09/07/2014, 19:20

... authentic member of the Family I soluble PPases. We also provide information concerning the kinetics and properties of the enzyme. More strikingly, we show a novel role of the PPase enzyme in the ... metabolically active tissues, such as the body wall, gut epithelium and reproductive organs, of adult female worms suggests a critical role of the enzyme in these organs. The presence of AsPPase in embryonated ... suggested the important roles of the PPase enzyme throughout the developmental cycle of Ascaris parasites. The results of neutralization studies indicate that AsPPase-specific IgG may interfere with the...

Ngày tải lên: 20/02/2014, 11:20

Ngày tải lên: 08/10/2013, 15:56

... in the cervical area. The shape of the uterine cervix is distorted in the DWI (arrowhead). d On the ADC map the tumor is hypointense (arrow) and the normal cervix is hyperintense. Note that the ... factor of 2). Imaging time of DWI was 90 s for 20 slices. Detection of uterine malignancy The ADC values of uterine cancers are lower than of normal tissue. On the other hand, in sarcomas the ADC may ... of hypointensity in the center of the cystic component (arrow). b On T1-WI with fat suppression the area in the cystic component is hyperintense. (c)On DWI with b = 1,000 s/mm 2 the area in the...

Ngày tải lên: 13/02/2014, 06:20

... 9A), confirming the role of endogenous FDX + FDXR in supporting the activity. To further confirm the role of endogenous FDX + FDXR in supporting the catalytic activity, we transformed the FDX (Yah1)- ... PKA in the mitochondrial targeting of CYP2E1 The role of PKA in mitochondrial targeting of CYP2E1 was investigated using two approaches. The first approach involved measuring the level of mito- chondrial ... in the association of the translational complex with the microsomal membrane [13,14]. Thus, the N-terminal hydrophobic sequences of CYPs are important for their targeting to and retention in the ER...

Ngày tải lên: 18/02/2014, 16:20

... Thus, the effect of the alteration of the glycone structure in the stabil- ity of the ES à complex (DDG à ) for the wild-type and mutant Sfbgly was determined using the k cat ⁄ K m for the hydrolysis ... the binding of the glycone within the Sfbgly active site. This hypothesis was further investigated by deter- mining the influence on the glycone binding of the Sfbgly interactions with the aglycone. ... in other b-glycosidases, especially in view of the broad variety of residues occupying those positions. Nevertheless, the differen- tial participation of several residues in the definition of the...

Ngày tải lên: 18/02/2014, 17:20

... wild-type enzyme, whereas the K22E mutant protein failed to form the covalent adduct. On the other hand, the K22V mutant protein requires the presence of UDPNAG for the formation of the adduct indicating ... wall biosynthesis are attractive targets for the development of new drugs [1]. The biosynthesis of the cell wall component peptidoglycan (or murein) commences with the transfer of the intact ... additional replacement of R120 by lysine reduces the probability of forming the fully closed form of the protein. The results obtained with the K22V/R120K double mutant protein point toward a central role of arginine...

Ngày tải lên: 19/02/2014, 13:20

... scales. The duration of the livelihoods impacts of these shocks are assumed to be one year. This is because the variables used to derive the impacts of these shocks (which include whether or not the ... n is the number of observations, X i is the forecast value, and Y i is the actual value. The closer the value of U is to zero, the better the model fit. Estimating Livelihoods Impact of HPAI ... solely the poultry income, thereby providing a more accurate measure of the impact of the disease. If one looked only at the impact of HPAI on the income from poultry without accounting for its role...

Ngày tải lên: 21/02/2014, 01:20

... 3B). The pK 2 increased as the size of the residue at position 169 increased. The effect of the size of the residue at position 169 may be related to the solvent accessibility of the side-chain of His210 ... was supported by the independency of the ionic strength of the pH-activity curve (Fig. 5). In the X-ray crystal structure, the Trp169 side-chain is located on the outside of the His210 side-chain ... nucleophilicity of the Ser194 hydroxyl oxygen. Accord- ingly, the Asp113–His57 diad is primarily important for the expression of the nucleophilicity of the catalytic Ser194. The side-chain of Asp113...

Ngày tải lên: 21/02/2014, 03:20

... Language Processing. Dept. of Computer Science TR-70, Rutgers University, New Brunswick, N.J. Reinhart, T;mya [1976] The Syntactic Domain of Anaphora. unpublished Ph.D. dissertation, Department of ... LinBuistics, M.I.T. Rieger, Charles J. [1974] Conceptual Memory: A Theory and Compufer Program for Processing Ihe Meaning Content of Natural Language Utterances. Stanford Artificial Intelligence ... Mode/ Of Children's Slot 7 Comprehension. M.I.T.A.I. Lab TR-266. Chmnsky, N. [1976] Conditions on Rules o[ Grammar. Linguistic Aqi,!ys_~is Voh,ne 2, p. 303-351. Orosz, Barb;ira [1977] The...

Ngày tải lên: 21/02/2014, 20:20

... strongly depends on the nature of the acyl moiety [9,10]. The fine tuning between these two features is of consider- able importance for the development of selective potent drugs. The biosynthesis of the peptide ... recognized by the C domain of the initiation module of dapto- mycin. That DptE and DptF are involved in the lipidation process of daptomycin was first shown by Miao et al. [1]. In their work, the daptomycin ... incorporation of the fatty acid moiety into nonribosomal peptides, condensation of the fatty acid with the N-terminal tryptophan of the nonribosomally synthesized peptide is necessary. Here, we report the...

Ngày tải lên: 07/03/2014, 04:20

... site because the presence of detergent or membrane lipids influences the formation of a helical structure. These authors proposed that activation of the receptor, and subsequently of the G protein, ... percentage of total binding, decreasing the binding affinity of the Role of helix 8 and C-termini in bradykinin receptors A. Faussner et al. 130 FEBS Journal 272 (2005) 129140 ê 2004 FEBS The role of ... and the position number is indi- cated. The grey box outside the membrane indicates the region of the putative cytosolic helix 8 as found in the crystal structure of bovine rhodopsin [24]. The...

Ngày tải lên: 07/03/2014, 16:20

... necessary to the company. Since the roles of cost accounting are more and more important to the company, and their impacts take an essential role in choosing decision of manager, the viewpoint of this ... methods of Vietnam companies, the research evaluates the usage of cost accounting of managers in decision- making process. There are many ways to carry out a research; however this thesis only ... implementation of the policy of the country annexed the pharmaceutical companies of the city, districts with pharmaceutical companies – Ha Tinh Pharmaceutical Materials. All medicine counters in the...

Ngày tải lên: 13/03/2014, 14:20

... that the fea- ture vectors corresponding to some of these docu- ments (particularly the short ones) have all zeroes in them. In other words, none of the bigrams from the training set appears in these ... (3) merge the list of newly generated features with the list of bigrams 20 and select the top 5000 features from the merged list according to their WLLR. We then repeat procedure P for the trigrams and ... classification. Second, the higher-order n-grams and the dependency-based features capture essentially the same information and so using either of them would be sufficient. To test the first hypothesis, we...

Ngày tải lên: 17/03/2014, 04:20

... some of the key concepts and outlines some of the basic IdM processes. The range of conceptions of identity is very broad. The examination of the following concepts is for the purposes of this ... “authenticates” him or herself by providing the credential issued during the enrolment process. The authentication process provides a level of assurance as to whether the other party is who they ... 2.2 Enrolment and the issuance of credentials While the technical aspects of IdM are complex, the basic processes can be described simply. They begin with enrolment, the process by which organisations...

Ngày tải lên: 23/03/2014, 23:21

... respectively,  j is the average number of PCs in the CPN and Pep is the chemical for- mula of the peptide divided by the number of PCs it contains (f). The formula of the monomer can be further divided ... shown. The mesh illustrates the position of the surface of shear, which determines the hydrodynamic radius of the nanocluster. The diagram is scaled to give approximately correct impres- sions of the ... biofluids, and was one of the earli- est members of the paralogous group of SCPPs to emerge in the late Cambrian together with CaP tissue mineralization [23,24]. Other members of the paralo- gous group...

Ngày tải lên: 29/03/2014, 23:20

Ngày tải lên: 30/03/2014, 02:20

Ngày tải lên: 30/03/2014, 10:20