ACAS is being used to describe short-range systems intended to prevent actual metal-on-metal collisions. In contrast, ASAS is being used to describe longer-range systems used to maintain standard en route separation between aircraft (5 nm {9.25 km} horizontal /1000' {305 m} vertical). Obstacle Collision Avoidance System is a ground based system that uses a low powered radar mounted on or near the obstacle. 2  The radar detects aircraft in the proximity of the obstacle and firstly warns aircraft via flashing medium intensity lights and secondly warns aircraft of the obstacle via a VHF broadcast.
Biotechnology - applied science that is concerned with biological systems, living organisms, or derivatives thereof, to make or modify products or processes for specific use. Botany - the scientific study of plants. Cell biology - the study of cells at the microscopic or at the molecular level. It includes studying the cellsâ physiological properties, structures, organelles, interactions with their environment, life cycle, division and apoptosis. Chronobiology - a science that studies time-related phenomena in living organisms.
Once one of your plants is infected by a fungus, it is important that you protect your other plants from the fungal infection. Plant diseases that are caused by fungi reduce the crops, create markings, affect the flowers and fruits, finally causing death of the plant.Majority of the plant diseases, about 8,000, are caused by fungi. Let's have a look at the major ones below.Along with fungi, even bacteria and viruses affect plants. At the same time, some plant diseases are caused by adverse environmental and climatic conditions.There are some plants that have a natural resistance to certain diseases, especially if these diseases and the plants have evolved together.nce one of your plants is infected by a fungus, it is important that you protect your other plants from the fungal infection. Plant diseases that are caused by fungi reduce the crops, create markings, affect the flowers and fruits, finally causing death of the plant.