A CTD (conductivity, temperature, and depth) device. The primary function of this tool is to detect how the conductivity and temperature of the water column changes relative to depth. Conductivity is ...

Two different, but equally correct, answers can be given to a question such as "What proportion of the cholesterol that is consumed comes from eggs?" This is because the question can have two ...

Stable isotope analysis can be used in ecological studies to trace chemical movement through the environment. A common application is to use the isotopic composition of a mixture to determine the ...

Dividing into a given ratio. You can use bar models to divide amounts in a given ratio. For example, Isabel and Geraint share their savings of £96 in the ratio 5 to 3. How much money does each person ...

The form starts with a 7 in wrist as an example. Type your own, and add any measurements you have taken to compare them with the classic targets.

eLetters is a forum for ongoing peer review. eLetters are not edited, proofread, or indexed, but they are screened. eLetters should provide substantive and scholarly commentary on the article. Neither ...

When making the dipping sauce, the ratio of vinegar to soy sauce is important. Feifei 但要注意的是，如果要表示 “两个事物的数量或水平成正比”，只能用包含名词 “proportion” 的搭配 “in proportion to” 来表达这个意思。 我们来听一个使用了搭配 “in proportion to” ...