Weiping Mei

5 Questions 7 Answers 0 Followers

Questions related from Weiping Mei

What are the dominate compounds of clay, silt, and sand in soil?

For example, what are the dominate 5 compounds in clay mineral? 80% of SiO2, etc.? Is the proportion/order of these dominate compounds changed with other factors, e.g., pH? Thank you in advance.

04 July 2020 621 1 View

How many cm deepth of soil does the definition of soil composition generally refer to?

In general, for example, we think soil consist of 40% of minerals, 10% of organic matters, and 50% of water and air. My question is as follow: Does the soil used for the above definition refer...

04 July 2020 5,225 1 View

EA-IRMS for C and N isotope，but 29N2 background intensity （BGD value）was higher than 100mv，why and how to recaculate it on isodat workspace ?

Question is just as title above. I have checked that no leak of gas occurred. Generally the value of 29N2 background intensity should be lower than 50 ml/min after machine is in stable...

17 January 2016 5,138 6 View

Could anyone tell me the boiling point (temperature) for 2:1(V/V) CHCl3:CH3CH2OH?

Could anyone tell me the boiling point (temperature) for 2:1(V/V) CHCl3:CH3CH2OH? Otherwise, how to know the boiling point of a mixture?

28 September 2015 4,710 3 View

Could anybody help to identify the two zooplankton which were sorted from the pelagic Kuroshio region?

Could anybody help me the name of the 2 zooplankton? or their family,or order?Anything will be helpful to me . Thank you so much. Additionally, if anybody need other photos on these two...

14 September 2015 7,465 16 View