변화하는 고분자,
“상전이 고분자”
(phase-transition polymer)
; at certain temperature
-> a volume phase transition
LCST(lowercritical solution temp.)
UCST(upper critical solution temp.)
Change in the hydration state
1) volume phase transition
2) coil-to-globule transition
Room temp. -> Body temp.
= change the physical properties
Temperature Drop?
(IPCC) published a report claiming
human activity is affecting global warming.
Surprisingly in a report, one article was deleted!!
“impact of human activity on climate change
was not distinctly discovered.”
Kyoto Protocol In 1997, 180 countries signed the Kyoto Protocol in Kyoto, JapanAccording to Kyoto Protocol, 36 counties are obliged to lower their
What is biodiesel?
Fig 1. biodeisel chemical structure
FAME (fatty acid methyl esther)
Biodiesel is a form of diesel fuel manufactured from vegetable oils, animal fats, or recycled restaurant greases.
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Fig 1. K. Hoekman, A. Broch, C. Robbins,
1. Introduction:
1.1 What is Global Warming?
Global warming is the rise in the average temperature of Earth's atmosphere and oceans since the late 19th century and its projected continuation. Since the early 20th century, Earth's mean surface temperature has increased by about 0.8 °°C(1.4°°F), with about two-thirds of the increase occurring since 1980. Warming of the climate system is u