Mohamed Abdel Salam

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problem statement: Digital image watermarking is the most popular method for image authentication, copyright protection and content description. Zernike moments are the most widely used moments in image processing and pattern recognition. The magnitudes of Zernike moments are rotation invariant so they can be used just as a watermark signal or be further(More)
Irrigating fruit orchards and crops with bicarbonate waters was found to develop stunted growth and malnutrition symptoms. These symptoms were related, in most cases, to the bicarbonate ion effect on plant nutrition. Direct effects of bicarbonate on respiration, reducing absorption of ions and inducing chlorosis etc. were reported by B a x t e r and B e l c(More)
It is recognized that in phosphate fertilization only a small percentage of the added phosphorus is absorbed by plant and the remainder is fixed in the soil in various relatively insoluble forms. Fixation is generally attributed to either/or chemical precipitation, physico-chemical sorption and the utilization by micro-organisms. The present literature on(More)
Growth and ion uptake by maize seedlings was studied as functions of calcium concentration and rate of flow of nutrient solutions. With calcium concentrations established at 1, 10, and 100 ppm Ca, all other nutrients being kept at constant concentration, the solutions passed through narrow culture trays at velocities of 2, 8, and 24 liter/day. Fresh and dry(More)
In this paper, a recommender system based on rough mereology was presented for predicting best cultivation dates for wheat in Egyptian Sinai Peninsula according to the required mean temperature for germination stage during October to December. The weather data was hourly collected from El-Arish weather station in north Sinai government from 1985 to 2013. As(More)
In lysimeters filled with sand from the Wadi el Natrun Area, the effect of varying levels of bicarbonate in irrigation solutions on the growth and mineral content of barley, var. Maryut, was investigated. Crop yield decreased progressively with the bicarbonate ion level and this condition was associated with symptoms of chlorosis. The bicarbonate levels of(More)
The counts ofAzotobacter, N-fixing clostridia, aerobic cellulose decomposing bacteria, spore formers and actinomycetes were not affected by examined irradiation doses. There were, however, indications of a disturbance in the balance between organisms as evidenced by the rapid increase of actinomycetes and sporeformers during incubation. The effects of(More)
Growth and iron uptake by maize seedlings were studied as functions of the phosphate concentration and rate of flow of nutrient solutions. With phosphate concentrations established at 0.1, 1.0, and 10.0 ppm P, all other nutrients being kept at constant concentration, the solutions passed through narrow culture trays at velocities of 2, 8, and 24 liter/day.(More)