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Growth Promotion of <i>Telfairia occidentalis</i>by Application of <i>Chlorella vulgaris</i>(Bioinoculant) Colonized Seeds and Soil under Tropical Field Conditions

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American Journal of Plant Sciences 2018年第3期9卷 403-415页

作者： Obioma Kenechukwu Agwa Chimezie Jason Ogugbue enechojo eunice williams Department of Microbiology University of Port Harcourt Port Harcourt Nigeria

The application of fertilizer is an essential factor for improving plant growth. This study was carried out to investigate the effect of Chlorella vulgaris (bio-fertilizer), NPK and poultry manure on the microbiological, biometric and biochemical properties of Telfairia occidentalis and its rhizosphere soil after forty days of planting. There were significant changes in the microbiological and physicochemical characteristics of soil in the various treatments administered. Maximum bacterial and fungal counts of 2.6 × 1010 and 3.8 × 105 cfu/g were obtained in soil treated with poultry manure and Chlorella vulgaris respectively whereas;maximum nitrogen (0.85%) and potassium (13.6 mg/ml) contents were obtained in NPK treated soil. Soil amended with Chlorella vulgaris showed maximum organic matter (9.48%) and phosphorus (8.55 mg/ml) concentrations. The amendment of soil with Chlorella vulgaris also speeded up germination of the Telfairia occidentalis to 5 days while, maximum plant length, number of leaves and fresh weight of the fluted pumpkin were obtained in Chlorella vulgaris amended soil and seed treatment pot. Total chlorophyll, carbohydrates, proteins and lipids were also increased on application of Chlorella vulgaris to soil or seed. Generally, application of Chlorella vulgaris to either seed or soil before planting resulted in increase in plant growth characteristics. Results of this study thus suggest that Chlorella vulgaris (bio-fertilizer) is a veritable biotechnological agent for improved cultivation of Telfairia occidentalis.

关键词： Biofertilizer Chlorella vulgaris NPK Poultry Manure Telfairia occidentalis

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XMT enabled prediction of structure and permeability of flocculated structures and sediments

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2005年第12期6卷 1367-1373页

作者： williams R.A. SELOMULYA C. JIA X. Institute of Particle Science ＆ Engineering School of Process Environmental ＆ Materials Engineering University of Leeds Leeds LS2 9JT UK ARC Centre for Functional Nanomaterials School of Chemical Engineering ＆ Industrial Chemistry University of New South Wales Sydney NSW 2052 Australia

3D visualisations of the microstructure of flocculated particulates and sediments using optical confocal laser mi- croscopy and high resolution X-ray microtomography (XMT) methods are described. Data obtained from in-situ measurements should enable direct computation of the properties of solids assembly (shape, size, contact area) and their permeability to fluids. A specific application relating to the formation of silica aggregates is described from which the behaviour of sediments containing these materials can be predicted on the basis of a bench-top test and the use of a Lattice Boltzman simulation. It is proposed that the method can potentially be used to predict trends such as the filtration behaviour of porous structures under different states of compression. This offers a significant benefit in assisting the formulation design of flocculated materials pertinent to a number of industrial sectors wishing to design optimal filtration or relevant operations.

关键词： Fluid flow Imaging Microstructure Porous media Visualization Tomography

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