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Start Over Coverage 989-997

1. Balanced path decomposition of $\lambda K_{n,n}$ and $\lambda K^*_{n,n}$

Creator:
Lee, Hung Chih and Lin, Chiang
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
path decomposition, balanced decomposition, and complete bipartite graph
Language:
English
Description:
Let $P_k$ denote a path with $k$ edges and $łK_{n,n}$ denote the $ł$-fold complete bipartite graph with both parts of size $n$. In this paper, we obtain the necessary and sufficient conditions for $łK_{n,n}$ to have a balanced $P_k$-decomposition. We also obtain the directed version of this result.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

2. The effect of galling aphids feeding on photosynthesis photochemistry of elm trees (Ulmus sp.)

Creator:
Kmieć, K., Rubinowska, K., Michałek, W., and Sytykiewicz, H.
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
fotosyntéza, mšice, jilm, photosynthesis, aphids, Ulmus, biotic stress, Eriosomatinae, fluorescence parameters, host plant response, 2, and 581
Language:
Multiple languages
Description:
Changes of chlorophyll (Chl) a fluorescence and photosynthetic pigment contents were analysed in galled leaves (visibly damaged and undamaged parts) and intact leaves. The values of minimal fluorescence of the dark-adapted state, maximal quantum yield of PSII photochemistry, effective quantum yield of PSII photochemical conversion, and photochemical quenching coefficient decreased in Ulmus pumila L. leaves galled by Tetraneura ulmi (L.) and in U. glabra Huds. galled by Eriosoma ulmi (L.). Colopha compressa (Koch.) feeding affected these parameters only in damaged parts of U. laevis Pall. galled leaves. The increasing number of T. ulmi galls progressively decreased photosynthetic performance. In gall tissues of all analysed aphid species, the lowest photosynthetic pigment content was found, indicating that the photosynthetic capacity must have been low in galls. Significant reduction of Chl and carotenoid contents were observed in damaged and undamaged portions of galled leaves only in the case of T. ulmi feeding., K. Kmieć, K. Rubinowska, W. Michałek, H. Sytykiewicz., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public