Take oil injected scroll compressor (Vi = 3) as an example.
Case1, Suction pressure = 1 bar, Discharge pressure = 40 bar.
Case2, Suction pressure = 30 bar, Discharge pressure = 90 bar.
Question: Which case has higher volumetric efficiency?
Any technique could detect the degree of litter decomposed by microbes? Or any indexes could do this job? I want to split the contribution of microbes during decomposition, so any suggestions...
23 February 2021 1,362 5 View
To be specific, I want to conduct an IV regression in stata with the following three equations. EQ1: Y1 ~Y2 Y3 X EQ2: Y2 ~ Z1 EQ3: Y3 ~ Z2 Both Y2 and Y3 are endogenous. However, Z1 and Z2 are...
23 February 2021 6,266 3 View
When I measured the cyclic voltammogram of palladium in the pbs solution, two reduction peaks appeared. This did not match the literature I saw. Why? And how can I find the possible reaction...
20 February 2021 2,486 3 View
Hi Everyone: I have a question regarding to qPCR. I am trying to do RT-PCR, and I want to have equal amount of input DNA for my RT-PCR, so I normalize my DNA input based on qPCR values of a...
31 January 2021 6,977 4 View
Hi Everyone: I want to quantify the relative amount of a protein in 2 samples. I will first digest the sample with trypsin, and subject the resulting peptides to LC-MS/MS analysis. I will then...
25 January 2021 8,333 3 View
I used methylcyclohexane/ ethylcyclohexane / n-butyl acetate mixed solvent to dissolve thermoplastic SBS & terpene resin. The mixture is then poured onto a glass substrate. After solvent...
24 January 2021 8,306 3 View
I want to do an ATRP reaction, synthesize an ATRP initiator, use DMF as a solvent, and mix DMF, BIBB and TEA to turn red. Why does it turn red? Xylene has been used as a solvent before, and there...
04 January 2021 8,034 3 View
Hi world, I have a curious question about desalination of seawater. Since seawater contains a alarming amount of suspended solids and salt (35 ppt). Which of these configuration is more viable...
03 January 2021 2,383 2 View
Just a quick question above, this oxidation method is mentioned by literature, but no one talked about the principle. Can anyone figure out how the oxidation works on any specific group?
20 December 2020 5,878 1 View
Hello, i am confused with how to figure out the tea bag index,could you please tell me how to compute the letter "a" and "k". Can i use R or Sigmaplot to fix it?
09 December 2020 6,705 3 View
When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...
03 March 2021 4,892 5 View
We use reactive sputtering process to make aluminum nitride film, and want to make c-axis aluminum nitride film on a silicon substrate, but the crystal orientation cannot be seen with...
03 March 2021 7,975 3 View
We found tests to determine cardiovascular risk taking into account lipid profile, blood pressure, age, history of diabetes, other laboratories. But when weight is involved, there is a paradox. I...
02 March 2021 6,036 1 View
Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...
02 March 2021 4,910 3 View
(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...
02 March 2021 3,309 2 View
I am using a Sutter electrode holder for my patch clamp experiments, but I'm having trouble keeping positive pressure inside my electrode due to a leak out of the back of the holder. I have added...
02 March 2021 5,829 1 View
Hi, I am trying to figure out which test would be most appropriate to run for the following question: Is there a difference in task blood pressure between smokers and non-smokers? There are two...
01 March 2021 8,235 2 View
I am simulating Heat Exchanger. I have tried and tested all the methods to resolve this issue from the internet like refining mesh, improving skewness and orthogonal quality ,extending outlet to...
01 March 2021 6,985 3 View
I want to do wettability analysis of hydrocarbon oil (octane)/rock/surfactant solution system. but to do the analysis first I have to make rock surface oil-wet. Since hydrocarbon oil does not have...
27 February 2021 5,383 3 View
Hi Guys. I'm a mechanical engineer and have a bit trouble, would be very glad if you could help me with my questions. I have a pressurized tank which contains Natural Gas at 200 Bar and 293...
26 February 2021 6,253 3 View