In the less common second type found near the sediment surface some samples have a higher proportion of longer - chain hydrocarbons (< 99 % methane) contained in a structure II clathrate. (en.wikipedia.org)
When someone with an allergy comes into contact with an allergen like pollen for example, they may have hypersensitivity symptoms such as hay fever, eczema, or asthma.Type 2: AntibodiesThe second type of hypersensitivity symptoms have to do with antibodies. (drlam.com)
LiB is the most energy dense second type commercially available, but has an inherently limited life to at most a few thousand charge / discharge cycles (Chevy Volt is ~ 5000 cycles from 80 % SoC to 35 % SoC at a 1C rate). (judithcurry.com)