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The cost of harvesting olive is probably the major factor in determining whether or not there will be an economically successful season for most farmers. Manual harvesting of fruit accounts for 30 to 60% of the total production costs. The aim of the present study was to design, construct and evaluate a hand-held harvester for olive tree. With the purpose of increasing the mechanization level of the harvest operation and permitting the production of high quality oil; the design was based on the following criteria: using local raw materials in the manufacture of the equipment. Providing simple design and easy in operation. The design is made considering all the mechanical, agronomical and economical aspects involved in this issue. The first step consists in the design of the shacking device used for the separation of the olives from the plant, the next step is the design of the supporting structure, including the arms and the frame; finally there is a description of moving parts of the machine. To evaluate the machine performance, a factorial experiment with complete randomized design in five replications was conducted, the factors being shaking frequency (900, 1250 and 1600 rpm), shaking period (1,2and 3 min) and Three varieties of olives (Krotina -kornaki-Manzanalo) varieties oil, varieties of table to study the effect of the use of different speeds in (rpm) and operating period in (min) on harvesting productivity and damage percent were evaluated. The highest harvesting productivity was at 1600 (rpm) and 3 (min), Low damage percent were evaluated at 900 (rpm) and 3 (min), machine achieved highest productivity and Low damage with Kornaki.

Biological treatment is one of the best methods used to treat wastewater because it is environmentally friendly and costs less than chemical treatment methods. Experimental work was conducted to treat aquaculture wastewater and reuse it using white aggregate and gravel mechanical filter media and rice straw, activated carbon, plastic beads and banana peel as biofilter media. Factors under investigation were filter media type, ammonia (NH 3 ) concentration, HRT, measurement indicators were pH, TDS, TSS, NTU, COD, BOD, TKN. The results showed that gravel mechanical filter is better than white aggregate mechanical filter in reducing NH 3 concentration and physico-chemical parameters. NH 3 concentration in raw wastewater was 32 mg/l and reduced to 28, 25 mg/l in white aggregate and gravel mechanical filter, respectively. For gravel mechanical filter, NH 3 concentration after passing through activated carbon, rice straw, plastic beads and banana peel was 5, 9.72, 10.8 and 5.5 mg/l, respectively. Four hydraulic retention time and doses of activated carbon per liter of wastewater were used, 5, 10, 15 and 20 gm and 5, 10, 20 and 30 min. 20 min with a medium dose of 15 gm of activated carbon per liter of wastewater had the best effect on NH 3 removal. Five hydraulic retention time and doses of rice straw per liter of wastewater were used, 5, 10, 15, 20 and 25 gm and 5, 10, 20, 30 and 40 min. 30 min with a medium dose of 20 gm of rice straw per liter of wastewater had the best effect on NH 3 removal.

The mechanization become as a basic input in all the facilities, stages and fields of the agricultural production which included the intensive poultry production, and as a basic step to design or develop any facility; the production analysis & study must be done. Therefore, the important physical engineering properties and the specification of the poultry must be studies which connect and affect on any used mechanical method which deals with that alive movable product. So, an experiment design made to study some important physical engineering properties for intensive birds under our local conditions in the Poultry farm in our faculty of agric. / Cairo university for three production cycle from September to December -2009 and study the link and the effect of that properties on some other parameters which are considered as engineering base when there is any arrangement with the alive intensive poultry with using any mechanical tools. The experiment random sample consisted of 300 birds (Arbarecars -type1+) divided into 3 iterations, information on body weight and 9 body measurements was individually collected from all chickens sample and by using (M Stat.) package to analysis the data; the targeted statistical parameters and measurements was indicated beside some other information. Also, three principal external indices were calculated (in %) the Stockiness, the Massiveness and the Long-leggedness. As a final point, indicate the value of the major 3 axis (X -Y -Z) for the sample and calculate the maximum bird space volume. Finally the important obtained results were as follow: The maximum bird space volume was (0.11 m 3 ) depending on the max values for each sample space axis.  The massiveness index gives ratio (1:5.8); the stockiness index gives ratio (1:1.3) and the long-leggedness index gives ratio (1:0.23).