Infinitesimal
发表于 2025-3-23 10:41:44
Amerikanisch-kanadische Beziehungenutic applications. For example, isotonic aqueous solutions of polyvinylpyrrolidone (PVP) were used as plasma expander during World War II and although this compound was far from ideal, it stayed in use for years before substitutes appeared . Since then, many polymers have been evaluated as candid
斗争
发表于 2025-3-23 15:38:18
Türkisch-libanesische Beziehungenil that, other than being subjected to price fluctuations, must eventually be depleted. Rising atmospheric carbon dioxide levels from combustion of fossil fuels are thought to be increasing global temperature that, in turn, may cause droughts, crop losses, storm damage, etc . Fuel shortage and th
种族被根除
发表于 2025-3-23 18:42:18
Türkisch-israelische Beziehungenge 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
低能儿
发表于 2025-3-24 00:33:40
Die transpazifischen Beziehungen 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
六个才偏离
发表于 2025-3-24 05:31:23
Die intraamerikanischen Beziehungenal protection in a major segment of the polymer industry. The water-soluble polymer segment is often forgotten or neglected when environmental issues associated with the disposal of polymers and plastics in general are evaluated. Water-solubility is sometimes magically considered to confer environme
呼吸
发表于 2025-3-24 06:40:36
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SPURN
发表于 2025-3-24 10:47:05
https://doi.org/10.1007/978-3-531-93392-4 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
字的误用
发表于 2025-3-24 15:19:27
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organism
发表于 2025-3-24 20:35:53
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Flatus
发表于 2025-3-25 00:55:21
Amerikanisch-kanadische Beziehungen this compound was far from ideal, it stayed in use for years before substitutes appeared . Since then, many polymers have been evaluated as candidate biomaterials . However, only a number of them have reached the stage of clinical applications and commercial availability.