Attention deficit hyperactivity disorder has three subtypes, which vary by the presentation of symptoms. With predominantly inattentive ADHD, the patient has six or more symptoms that fall into the inattentive category.n particular, ADHD patients have variations on the transporter genes for these neurotransmitters. For example, patients with predominantly inattentive ADHD had changes to their norepinephrine transporter gene, which affects norepinephrine levels in their brains.
The Zumwalt class warships are the largest destroyer ever built. Actually in terms of size, displacement and armament these are closer to cruisers rather than destroyers. The Zumwalt class ships are even larger than Ticonderoga class cruisers. These new vessels sport cutting-edge technology and are stealthy to radars.
China Launches Another Monster Coast Guard Cutter. âThe large, intimidating ship are meant show the Chinese flag at territorial disputesâ. China has built a second 12,000-ton Coast Guard cutter, the largest cutter in the service of any coast guard in the world. The ship is as large as a U.S. Navy destroyer and will be used for maritime search and rescue, law enforcement, and territorial boundary marking.