不适当
发表于 2025-3-30 09:12:02
http://reply.papertrans.cn/27/2649/264875/264875_51.png
Tortuous
发表于 2025-3-30 13:13:36
Sustainable Poly(Hydroxyalkanoate) (PHA) Production,ge quantities from renewable resources by means of well known fermentation processes and the imposition of particular culture conditions, and a number of physical or chemical methods are known to extract them from the producing biomass. Production processes such as batch, semi-batch and continuous f
agonist
发表于 2025-3-30 20:11:48
Polyhydroxyalkanoates: Properties and Modification for High Volume Applications, used as an energy reserve for bacteria, similar to the role of polysaccharides or polyphosphates in living cells. PHAs can be produced by relative simple and efficient procedure based completely on biotechnology utilizing fully renewable resources (see Chapter 8). Variations in this procedure, main
疏远天际
发表于 2025-3-31 00:21:44
http://reply.papertrans.cn/27/2649/264875/264875_54.png
没收
发表于 2025-3-31 03:41:25
Plastics and the Environment,uction of supersonic aircraft and spacecraft. Much of this growth has taken place at the expense of more traditional materials, such as steel, aluminum, paper and glass. Quite understandably, the industries associated with their manufacture have fought back through public relations campaigns intende
使激动
发表于 2025-3-31 06:02:58
Degradable Hydrocarbon Polymers in Waste and Litter Control, environmental problems; for example, even when natural polymers become durable litter, as in the case of trees, branches etc., they are eventually incorporated into the biological carbon cycle . By contrast the by-products of human activity are not seen in this way although they rarely remain in