Some of the worst offenders, which can take decades to degrade in landfills, are polypropylene—which is used for things such ...

Now, researchers at the University of California, Berkeley have come up with a method of recycling these polymers that uses ...

引力波探测器使用数公里长的干涉仪来测量时空的微小膨胀和收缩。由于量子力学的原因，这些测量的精度是有限的。理论上，利用光的压缩态可以超越量子极限，而合适的滤光腔可以在更宽的频率范围内扩展这一优势。

When it comes to boat construction, all sorts of materials can take part in the assembly. Bigger vessels need heavy-duty structures to last, but even materials like polyethylene can make an excellent ...

The academics built the cell with a substrate made of indium tin oxide (ITO) and polyethylene terephthalate (PET), the SnO 2 ETL, a perovskite absorber, a hole transport layer (HTL) relying on ...

The government made the possession of nitrous oxide, or laughing gas, a criminal offence in England and Wales, as part of plans to tackle anti-social behaviour. Its use soared during the pandemic ...

The government is planning to make possession of nitrous oxide - also known as laughing gas - a criminal offence in England and Wales. Known as NOS, its use as a recreational drug soared during ...

adds a carbon-carbon double bond to the plastic's polyethylene polymer. The other two (tungsten oxide on silica) use this ...

Polyethylene glycol (PEG) 3350; pwd for reconstitution. Polyethylene glycol 3350 cleanses the bowel by induction of diarrhea. The osmotic activity of polyethylene glycol 3350, in combination with ...