Does dilution affect the metal concentration (ppm) in Atomic absorption spectroscopy analysis?

Analysis conducted using AAS to determine the presence of tungstate within the sample. The tungstate concentration of the sample was around 1100 ppm but after diluting 2 ml of sample to 5 ml, and...

26 January 2021 6,242 4 View

What is the best method for determining micropores surface area of coal-based activated carbon?

There are several methods like the DR and t method that calculates the surface area of the micropores. which one gives the value of this surface with high accuracy?

01 January 2021 3,228 4 View

Why the solution of a system of linear equations on MATLAB differs from Excel ?

Hello I have a system of linear equations composed of 11 equations and 11 variables, I solved it through Excel and MATLAB in the form of AX=B. While the matrix A , matrix B and the inverse of...

02 October 2020 9,856 7 View

What is the relative standard curve method?

The relative standard curve method in qPCR is a standard curve-based method for relative real time PCR data processing. Can anyone explain the calculations of this method to me? I read something...

20 July 2019 5,799 3 View

In the X-ray diffraction, which peaks belong to the Ni4Ti3 precipitate and which ones belong to the Ni3Ti precipitate ?

I can not separate the XRD peaks of Ni4Ti3 and Ni3Ti precipitates, because their main peaks are not clear and they're very close to each other. I want to know that in the X-ray diffraction...

22 June 2019 1,496 3 View

Trsnsy Issue : the error of '' External File'' ?

I want to simulate the heat pump (air source) with unite storage thermal Tank but I get the following msg: ''350 : Unable to open the file associated with an ASSIGNED logical unit number....

23 January 2019 146 1 View

What's the methods that used to drive normal cancer cells to become resistance by using certain drug?

I'm working in subject related to undestand the mechanisms resistance of cancer cell to drug. For example: Melanoma to Vemurafenib

25 October 2017 8,069 2 View

How can I catch true spiders from date palm?

Can I used another way neither ground traps?

03 November 2016 8,036 6 View

What is the best way to achieve a relatively metal (specifically Zinc) free E. coli culture?

13 May 2016 7,511 3 View

How can I avoid negative values in the output of a feedforward net?

How can I avoid negative values in the output of a feedforward net? Note that I do not have negative values in the inputs.

13 December 2015 7,118 5 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 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

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

How to grow E.coli on the low salt LB agar plate with 50 or 100ug/ml of Blasticidin?

Hello, I would like to ask how to grow E.coli which resists 50 or 100ug/ml of Blasticidin. I have tried many methods by using low salt Luria-Bertain(LB) agar plate. However, no colonies grow. Let...

01 March 2021 2,027 2 View

Could you please recommend some good journal that accept very long revie papers (approximately 6000+ words) in neurosurgery, cancer biology ?

Could you please recommend some good journal that accept very long revie papers (approximately 6000+ words) in neurosurgery, cancer biology ?

01 March 2021 8,087 3 View

Which cell line should we use to perform biological dosimetry experiments?

We are preparing some experiments based on irradiating cells under different conditions in order to evaluate the effects in terms of DNA damage, genetic expression, etc. As our project is...

01 March 2021 3,355 3 View

What is the state of the drug inside solid lipid nanoparticles (SLNs)?

I am a little confuse with the mechanism of solid lipid nanoparticles (SLNs). The main point of encapsulating drugs into SLNs is because some drugs have low solubility in water. Therefore, SLNs...

01 March 2021 3,703 3 View

Is CD44 degraded in lysosome together with hyaluronan after CD44 mediated endocytosis of hyaluronic acid?

Also when RHAMM binds hyaluronic acid, they get internalized, will RHAMM also be degraded? Or both CD44 and RHAMM will be transferred back to the cell membrane? Asking for breast cancer cell line...

01 March 2021 8,169 2 View

How does an antibody have full intact antibody + half antibody?

Hello, I was just wondering how does a antibody have full intact antibody + half antibody? Is it because of the drug conjugation?

28 February 2021 1,577 1 View