Báo cáo toán học: "Responses to elevated atmospheric CO concentration 2 and nitrogen supply of Quercus ilex L seedlings from a coppice stand growing at a natural CO 2 spring" pot

... total leaf area to total plant dry mass; specific leaf area, SLA (m 2 g -1), as the ratio of total leaf area to leaf dry mass; partitioning of total plant dry mass, LWR, ... Plant material was dried at 65 °C to constant weight and dry mass (DW) measure- ments were made. Leaf area ratio, LAR (m 2 g -1), was calculated as the rat...

Ngày tải lên: 08/08/2014, 14:21

... increased assimilation rate and decreased stomatal conductance, water use efficiency of leaves increased strongly at elevated [CO 2] in Q. virgini- ana seedlings. This increase ... place without a parallel increase in total non-structural carbohydrates at elevated [CO, ] that otherwise would have presumably diluted phenolics. An increase in...

Ngày tải lên: 08/08/2014, 14:21

... stems and leaves of Quercus ilex L. (Holm oak), a typical Mediterranean sclerophyllous tree. This mycorrhizal association is of importance to agricul- tural and silvicultural activity in abandoned ... radiation Ψ L : leaf water potential g L : leaf conductance to water vapor Pn: net photosynthesis A L : total leaf surface area A R : total root surface area Ann. F...

Ngày tải lên: 08/08/2014, 14:22

... ratio of total leaf area to total leaf biomass. Leaf area index was estimated from total leaf area per plant and number of plants per clone and per ground area of ... were calculated according to Schulte and Hinckley [19]. Weight-averaged bulk modulus of elastic- ity was calculated after Wilson et al. [22 ]. 2. 6. Statistical analy...

Ngày tải lên: 08/08/2014, 14:21

... were made. Leaf area ratio (LAR; m2 ·g-1 ) was cal- culated as the ratio of total leaf area to plant dry weight; specific leaf area (SLA; m2 ·g-1 ) was calculated as the ratio ... carbohydrates [38]. Total plant leaf area increased in response to elevated [CO 2] (and to high N) and LAR (and secondarily LWR) decreased over time in...

Ngày tải lên: 08/08/2014, 14:21

... disseminating the results of biomedical researc h in our lifetime." Sir Paul Nurse, Cancer Research UK Your research papers will be: available free of charge to the entire biomedical community peer ... Weis. Health and Quality of Life Outcomes 20 10 8:6. Publish with Bio Med Central and every scientist can read your work free of charge "BioMed Central will be the mo...

Ngày tải lên: 18/06/2014, 19:20

... l( a 2 ) +l( a n−3 )is not a label. (ii) By (2. 1), l( a 2 ) +l( a n 2 )=b − b − l( a n−3 )= l( a n−3 ), then l( a 2 ) +l( a n 2 ) is not a label. (iii) By (2. 1), l( a 2 ) +l( a n−1 ) =a +2b, then we have |l( a 4 )| ... (2. 1), l( a 3 ) +l( a n−1 ) =a − b + a + b = 2a, then we have |l( a 1 )| < ;l( a 3 ) +l( a n−1 ) < |l( a 3 )...

Ngày tải lên: 06/08/2014, 05:20

... v of H, by Lemma 2. 4 and Lemma 2. 2. This implies the following result. Lemma 2. 5 Let G be a graph and let u beavertexofG with d ∗∗ G (u) ≤ 1. Then u belongs to no ∆-overfull subgraph of G. A ... the three final results are edge cuts of size less than ∆, which will play an important role (see also Lemma 2. 3). Lemma 2. 7 Let H be an overfull graph and let U ⊂ V with e...

Ngày tải lên: 07/08/2014, 06:22

... has the matroid polytope P M as a maximal cell. Proof. The basis exchange axiom for matroids translates int o a combinatorial version of the quadratic Pl¨ucker relations (cf. Remark 2. 4), and this ... trees. Proof. Assume that Σ is a triangulation. Equivalently, M(Σ) has exactly n − 3 odd cells, all of which are upward triangles, and the even cells are lozenges. Placing a la...

Ngày tải lên: 08/08/2014, 01:20

... of all root individual demands, can be compared to the carbohydrate availability, and a satisfac- tion coefficient (value between 0 and 1) is calculated for the given time step (ratio total availability/global demand). ... models. It determines largely the simu- lated allocation rules. It relies generally on potential growth curves, which allow the calculation of a potential gro...

Ngày tải lên: 08/08/2014, 14:22