How to make fractions of chloroform extract of plant, using seperating funnel?

28 February 2021 8,466 2 View

How to determine the false positive sequencing result?

Hello Researchers. I am conducting a study on the determination of WNV on mosquito samples. I run nested PCR. Bands were shown to almost all samples during carrying out gel electrophoresis. After...

17 January 2021 3,263 11 View

Difference between ECM Regression and CEC Regression?

What's the difference between the ECM Regression in the ARDL Error Correction Regression and the Conditional Error Correction Regression in the ARDL long run form and bound test as seen in EViews

02 December 2020 6,770 1 View

Why is it necessary to vortex and incubate in dark the sample and DPPH solution and other DPPH questions?

Hi all, In the determination of Antioxidant capacity of fruit samples, I used DPPH assay and have a few questions regarding the DPPH assay 1) why is it necessary to vortex and incubate in dark...

30 August 2020 246 3 View

What is the equation to explain how one possible organic side product is formed in the synthesis of 1-bromobutane?

And show the chemical properties window of this side product. Explain how this product can be separated from the desired product. I have already identified that the possible organic side products...

29 December 2019 6,170 4 View

Is there data related to in-vehicule ethernet network packets?

I'm working on machine learning applied to ethernet in-vehicle networks, the problem is that most of the simulators and datasets generated are related to CAN networks. If anyone knows a simulator...

25 November 2019 8,768 1 View

What makes certain journals discontinued from Scopus?

What makes certain journals discontinued from Scopus? I found that journals that in the least quartiles (Q3 or Q4) have tendency to be discontinued from Scopus. Is it due to the lesser citation...

16 November 2019 7,844 5 View

Is it typical for phenol red to fade over time during cell culture?

I am incubating cells in RPMI in a CO2 incubator at 37C and 80% RH. The phenol red started as a pink color and after 24 hours in the incubator it has faded. The color is more or less the same,...

02 July 2019 314 2 View

What could cause high cytokine expression in untreated PBMC cell culture?

I am treated PBMCs with various compound to observe cytokine expression using ELISA, however, I am getting high expression in my untreated control cells as compared to my media-only control. I am...

05 June 2019 2,125 13 View

Why does the collection of cell culture supernatants need to be performed at 4C?

I am using cell culture supernatants in an ELISA. The cells are incubated at 37C, centrifuged, then the supernatants are used in an ELISA at RT. Why does the supernatant collection need to be at...

04 June 2019 8,571 3 View

Why does blocking with my immunogenic peptide cause nuclear fluorescence in ICC?

Hi all, I am validating a polyclonal antibody raised against human ANT4, through WB and ICC. In most of my controls, the antibody shows very little off-target binding, but when I pre-incubate the...

03 March 2021 5,999 3 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Where can I find life cycle inventory or assessment of non woven materials?

Dear network, I am looking for the LCA or LCI or at least the energy balances of the non woven fabrics process for my master project, in specific for natural fibers, yet I have found...

02 March 2021 9,662 1 View

Does Napabucasin soluble in dichloromethane and in ethanol?

I need to prepare a solution of Napabucasin (inhibitor of cancer cell stemness) in dichloromethane. The drug is expensive, so maybe somebody already tried to do it. If it is soluble, what is the...

02 March 2021 9,945 3 View

Help request in CST microwave?

im working now on TPV solar cells and metamaterials and i realy need our help in CST microwave i have a tpv cell simulation and i want to extract particullarly the absorbtion of only the active...

02 March 2021 2,246 2 View

Dapi fluorescence protocol for colon cell lines ?

28 February 2021 2,534 2 View

Necessary tube lenght to cool Natural gas in a dry-ice cooling bath?

I have a tank which contains natural gas at 250 Bar and 293 Kelvin. I want to cool the gas in a dry-ice cooling bath to about 195 Kelvin. The gas will flow in a copper-tube through the bath with a...

27 February 2021 8,128 1 View

Exit velocity of natural gas from pressurized tank?

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

Does RNAiMAX transfection reagent work in serum free medium?

I diluted siRNA and RNAiMAX in opti-MEM and added to the cells which they were in the growth medium. Is it a right way? or should I culture cells in the opti-MEM medium for a while and not in...

26 February 2021 10,041 3 View

Has anyone had luck using cell lines other than HEK 293 (such as COS1) to package lentivirus?

I am looking to package lentivirus in endothelial cells but I am opposed to using 293 cells due to personal ethics regarding the source. I have done some reading and saw that COS1, COS7, & CHO...

25 February 2021 3,030 1 View