Trends from a tillage study conducted since 2011 have shown no clear differences between systems for either corn or soybeans in lighter soils under irrigation. One year out of eight years has yield advantage any system, which appears to be related environmental conditions experienced during the season. Averaged across all study, treatments with deep every every-other had about 3.5% higher yield...

IT is estimated that chromosome abnormalities responsible for congenital errors of development may be present in about one half per cent. of the general population and it is thought that about three-quarters of these chromosome errors involve abnormalities of the sex chromosomes. This, then, means that about 4,ooo babies are born every year and survive with developmental anomalies due to chromo...

background: the food hygiene and its distribution places are very important. tourists go to the places that provide them with enough assurance, trust and security. in this situation, providing proper services and appliances like food distributing places with appropriate environmental health condition is effective in attracting their interest. the objective of this research is evaluating the env...

The existence of a global attractor is proved for the skew-product semiflow induced by almost periodic Nicholson systems and new conditions are given unique positive solution which exponentially attracts every other solution. Besides, some numerical simulations included to illustrate our results in concrete systems.