自酿啤酒HowtoBrew中英对照4.pdf,前言 目前可以找到有關自釀啤酒( homebrewing )的好書有很多,那麼你會問:為什麼還 要再寫一本呢?答案是:這是觀點的問題。幾年前當我開始自釀啤酒的時候,我閱讀了每 一本我能找到有關啤酒釀造的書,這些書的出版時間前後相差達十五年
Lauter - To strain or separate. Lautering acts to separate the wort from grain via filtering and sparging. Lipid - Any of various substances that are soluble in nonpolar organic solvents, and that include fats, waxes, phosphatides, cerebrosides, and related and derived compounds. Lipids, ...
How do you separate ethyl 4-aminobenzoate, benzil and 1,4 dibromobenzene How can 4-methyl-3-hexanol be synthesized from 3-pentanone? How would you synthesize the following substances starting from benzene? (a) (b) (c) Would you expect naphthalene to have greater solubility in water or in ...
Mix phthalic anhydride and aminoacetaldehyde diethyl acetal, then quickly add the mixture to a preheated reaction vessel. Stir and heat until the mixture melts, then maintain the reaction temperature. The volume of the reaction mixture will suddenly increase. Stop heating, allow the mixture to sol...
Answer to: Describe how the process of filtration can be used to separate a mixture into its components. Give an example. By signing up, you'll get...
methanol (the stuff behind the “moonshine makes you go blind” legends) evaporates at 148.5 F, so a distiller can conclude any liquid that shows up before 173 F (the boiling point of safe, delightful ethanol) should be discarded. Meanwhile, fusel alcohols (also known as “fusel oils” for...
A 30 m x 0.25 mm x 0.25 μm HP-5MS fused-silica capillary column (Agilent J & W Scientific, Folsom, CA, USA) was utilized to separate the derivatives. The injector temperature was maintained at 260 ℃. The program contained 60 ℃ for 0.5 min, ramped to 210 ℃ at a rate of 8 ℃...
To fix with organic solvents, use ice-cold methanol, ethanol, or a 1:1 mix of ethanol and methanol to cover the cells on your coverslips. Once covered, incubate your cells in the freezer (-20°C) for 5 to 7 minutes. Do not worry about keeping your cells sterile at this point—you...
How do factories contribute to ocean acidification? How does groundwater become acidic? How does a grain of wheat grow? Why does soap produce bubbles? How does carbon dioxide enter a plant? How does distillation separate the components of a mixture? How do you increase sodium bicarbonate levels...
This reaction in a single fuel cell produces only about 0.7 volts. To get this voltage up to a reasonable level, many separate fuel cells must be combined to form a fuel-cell stack. Bipolar plates are used to connect one fuel cell to another and are subjected to both oxidizing and reduci...