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Alrwashdeh, Saad S.,Markotter, Henning,Haussmann, Jan,Hilger, Andre,Klages, Merle,Muller, Bernd R.,Kupsch, Andreas,Riesemeier, Heinrich,Scholta, Joachim,Manke, Ingo Korean Society of Microscopy 2017 Applied microscopy Vol.47 No.3
In this investigation, synchrotron X-ray imaging was used to investigate the water distribution inside newly developed gas diffusion media in polymer electrolyte membrane fuel cells. In-situ radiography was used to reveal the relationship between the structure of the microporous layer (MPL) and the water flow in a newly developed MPL equipped with randomly arranged holes. A strong influence of these holes on the overall water transport was found. This contribution provides a brief overview to some of our recent activities on this research field.
Fekadu Wondimu,Mekbib Firew,Lakew Berhane,Haussmann Bettina I. G. 한국작물학회 2023 Journal of crop science and biotechnology Vol.26 No.2
Barley is one of the most important cereal crops cultivated over a wider environment in the diverse agro-ecologies in Ethiopia. Study on genotype by environment interaction and stability analysis using thirty barley genotypes was conducted across nine environments in randomized complete block design with three replications to study the magnitude of genotype by environment interaction and to evaluate the stability and adaptability of barley genotypes with high mean yield performance. Additive main efect and multiplicative interaction (AMMI), genotype main efect and genotypes by environment interaction (GGE) and Eberhart and Russell models were employed for stability and adaptability analysis. Thus, AMMI analysis of variance for grain yield showed highly signifcant (P≤0.001) diferences due to genotypes, environment and genotype by environment interaction. Accordingly, environment accounted for (54.61%) of the total variations followed by genotype (10.69%) and G×E interaction (34.70%). Moreover, a substantial percentage of the G×E interaction sum of squares was explained by IPCA1 (45.48%) followed by IPCA2 (24.65%) and IPCA3 (13.02%) while the frst two IPCAs explained 70.13%. Moreover, AMMI and GGE were found to be efcient in grouping the barley growing environment in the central highland, whereas Debre Markos and Bekoji were good representative testing environments. Generally, the current study indicated that 3514-A, 24,990, and 17,148 were desirable genotypes for subsequent breeding line identifcation and variety development.