Báo cáo khoa học: "Hydraulic architecture of trees: main concepts and results" pdf

... anatomy and especially on the changes with time in the more or less integrated network of connections be - tween the roots and branches of the same tree. Recent works of André [8, 9] and Fujii and ... by the French School of Montpellier [11, 54] and the hydraulic architecture. The curves express the same type of correlation between the logarithm of K h and the logarit...

Ngày tải lên: 08/08/2014, 14:21

... hours of the morning resulting in low transpiration rates (1.8 and 1.1 mmol m –2 s –1 for ash and maple trees, respectively, in June, figure 1c). In compari- son of F. excelsior, the limitation of ... pseudoplatanus by a factor of 2 and 4, respectively, on average (table II). Table III shows the hydraulic conductivity for leaf petioles of A. pseudoplatanus, A. opalus and rac...

Ngày tải lên: 08/08/2014, 14:21

... Frequency of occurrence of the impossibility to measure k r with the transient mode of the HPFM (negative correlation between flow and pressure) as a function of the growth substrate and the state of ... mode consisted of increasing pressure by steps of 0.1 MPa ev - ery 3 minutes to a maximum of 0.5 MPa and was called “dynamic mode”. Flow and pressure were recorded at...

Ngày tải lên: 08/08/2014, 14:21

... optimization of the hydraulic system for water conductance rather than avoidance of xylem embolisms. A number of studies have focused on the hydraulic architecture of the shoots of large woody ... to roots of maize ( Zea mays L.), Plant Physiol. 91 (1989) 719-726. [10] Patiño S., Tyree M.T., Herre E.A., Comparison of hydraulic architecture of woody plants of differing p...

Ngày tải lên: 08/08/2014, 14:22

... (i.e. deprotonation of C2a-OH of HEThDP and proton- ation of FAD at N5 and N1). The tight and rigid binding of both cofactors excludes a direct carbanion mechanism with covalent linkage between C2a of the HEThDP ... mechanistic understanding of reductive acetylation and active site coupling between E1 and E2 [39,40]. The active center of E1 with the ThDP cofactor is lo...

Ngày tải lên: 18/02/2014, 08:20

... 6, Glu-Pg- and mAb 34D3-trea- ted cells. Bands in lanes 1 and 2 correspond to forms I and II of plasmin(ogen). High molecular weight bands in lanes 5 and 6 correspond to mAb A10.2- and mAb 34D3-plasminogen ... the presence of varying concentrations of mAb A10.2 or mAb 34D3 (0–1 l M for cells and 0–0.25 lM for fibrin) and fixed concentrations of Glu-Pg (200 n M for cells a...

Ngày tải lên: 20/02/2014, 01:20

... the nearest preceding and follow- ing adjective, adverb, preposition, and verb, and one additional preceding adjective and preposition and one additional following verb and preposition. Contextual ... nearest pre- ceding and following modal verb and wh-adverb (e.g., where and when). Finally, we reduced the scope of these features from the entire sentence to a context...

Ngày tải lên: 20/02/2014, 05:20

... spelling, good grammar, rhythm and flow, appropriateness of tone, and several other specific characteristics of good text. In terms of automatic evaluation, we are not aware of any technique that measures ... according to a mix of the initial method of Section 3.2, for calibration, and the new methods above. We again used a sentence length of 24, and sequence lengths for t...

Ngày tải lên: 20/02/2014, 12:20

... anti-(rat Ig) IgG and were all negative. RESULTS Expression and puri®cation of recombinant domain IV from mouse laminin b1 and b2 chain Domain IV of t he b1 (position 541±771) and b2 (position 556±782) ... of LN and LE (circles) modules, domain IV, and a coiled-coil (cc) domain II,I. Fig. 2. SDS/PAGE of puri®ed recombinant fragments c ontaining domain IV of b1orb2 chain...

Ngày tải lên: 21/02/2014, 03:20

... Oligomeric associations of T subunits with and without the amino-terminal domain of the collagen tail. J Biol Chem 272, 3007–3015. D. Liang et al. Oligomerization and secretion of AChE and BChE FEBS Journal ... proportion of tetramers (not shown). For the chimeras Ab and Ba, the rates of secretion were approximately 5% and 15% of the cellular con- tent per hour, respecti...

Ngày tải lên: 07/03/2014, 03:20