Two various kinds of olive mill solid residues (Crude and partly destoned) were used to investigate the adsorbing property of olive mill solid residues (OMSR) to heavy metals. 100 adult albino rats were classified into four groups. One group served as (–ve) control group (10 rats), received balanced ration and supplied tap water; in addition to three equal groups (each of 30 rats) received water polluted with1/100LD50 of either lead, cadmium or copper at concentration levels( 107.2 mg/L, 8.8mg/L or 58.4mg/L respectively). Each main group was divided into 3sub- groups, one (+ve) control and two experimental groups fed either 20 % crude olive mill or 20% partly destoned olive mill. Polluted water administration extended for 1 month, meanwhile feeding 20% crude or partly destoned (OMSR) continued for further 30 days after cessation of polluted water as a withdrawal period. Samples of serum, muscle, liver and kidney were collected at one month of the experiment and at the end of the withdrawal period after one month. Level of metals were determined by atomic absorption spectrophotometer. Results indicate that crude olive mill exhibit higher adsorption capacities to Pb, cd, and cu than partly destoned especially at withdrawal period. In conclusion, the main advantage of this process is the conversion of this waste product to a useful adsorbent material with low coast in minimizing the toxic hazard of environmental pollution with heavy metals.

The present study has been carried out to investigate the effect of three neurotransmitters (Glutamate, L-Arginine and GABA) on some aspects of the reproductive performance of mature male Albino rats. For this purpose, a total of 100 mature male Albino rats were used. Rats were divided into 4 comparable groups; the first consists of 10 rats, was left as control. The second was administered glutamate 10 mg/ kg, the third group was injected by L- Arginine 20 mg/ kg while the fourth was injected by GABA 1 mg / rat. The results showed that administration of glutamate was concomitant with increase in synthesis and release of pituitary LH causing increase in its serum level as well as decrease serum level of testosterone. On the other hand, prolonged L-Arginine administration led to remarkable elevation in both pituitary and serum LH and significant decrease of serum testosterone. While, GABA administration led to remarkable decrease in pituitary and serum LH with significant decrease in serum testosterone level.