Concrete Canoe. The Greek polymath Archimedes is said to have solved the mystery of buoyancy in a bathtub. Even if the story is apocryphal, his principle isn't: If an object weighs less than the water it displaces, it won't sink. Even concrete can float. Materials scientist Joseph-Louis Lambot built a concrete dinghy featured in the 1855 World's Fair.
Definition of BIOFILTER. : a filter bed in which sewage is subjected to the action of microorganisms that assist in decomposing it. ADVERTISEMENT. 2bi- + filter.rigin of BIOFILTER. 2bi- + filter. This word doesn't usually appear in our free dictionary, but the definition from our premium Unabridged Dictionary is offered here on a limited basis.
Anti-TNFÎ± biologics are effective treatments for inflammatory bowel diseases (IBD). Among other potential adverse effects, anti-TNFÎ± biologics have been implicated in the worsening of multiple sclerosis (MS) and in the development of central nervous system (CNS) idiopathic inflammatory demyelinating diseases (IIDDs).BD, inflammatory bowel disease; CD, Crohn's disease; UC, ulcerative colitis; anti-TNF Î±, anti-tumour necrosis factor alpha; IIDD, idiopathic inflammatory-demyelinating disease of the central nervous system.