Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

Experiment statistical analysis?

07 February 2021 3,635 3 View

Why Selenium nanoparticles synthesized by PEG 200 could not be scaled up ?

I could not synthesize Selenium nanoparticles by PEG 200 at up-scale ( more than 100 ml) as it got aggregated while at small amounts it works fine , I work with 850 PPM using selenium powder in...

08 January 2021 10,049 1 View

How to read forces from a file and apply them to a specified nodes in ANSYS APDL?

I want to apply different forces for every node. These force values are saved in .txt or .csv file. Can anybody help me to do that using APDL command. I attached Ansys input file for my model and...

15 November 2020 2,883 1 View

Which should be used for Anxiety : unselective beta blocker or B1 Blocker ?

which would be more effective in treatment or protection from Anxiety : unselective beta blocker as Propranolol or selective beta-1 adrenergic receptor antagonist as Bisoprolol ?

15 November 2020 7,994 2 View

How Abaqus can generate lumped mass matrix with non zero values only at the diagonal ?

Hi everybody I generated mass matrix by Abaqus, but it has nonzero off diagonal values. I need to get lumped mass matrix with nonzero values only at the diagonal. In Ansys I can turn Lump on...

28 October 2020 5,960 4 View

No title

I searched a lot for a generalized equation or an algorithm that can be implemented on MATLAB. However, all that I found still theoretical analysis. Can you help with the algorithm or the code for...

24 August 2020 8,117 7 View

How to know coationg efficiency of nanoparticles?

If I'm trying to coat ZnO nanoparticles with Silica, how to know how much of ZnO is coated? (coating efficiency)

29 July 2020 1,813 13 View

Extraction of CoA linked to Acyl chains?

I am in need for a protocol dedicated to the extraction of CoA-acyl chains from plant extracts.

17 May 2020 3,459 1 View

What are the alternatives for horizontal bracing system?

There is a steel pipe rack with normal framing system including horizontal and vertical bracing systems, all the connections of the horizontal bracing are defected, for some reasons it is nearly...

29 February 2020 1,583 3 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 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

Irradiation data for JAPAN?

Hi, Could you help me to get the latest (2019, 2020) solar resource data for a particular site in JAPAN? PV GIS and NSRDB data are not in reach to JAPAN, I'm looking for some other database for...

03 March 2021 961 3 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

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

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(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

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

Sutter electrode holder leaking after applying positive pressure. How to fix?

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

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 Relativistic effects is one reason for lanthanide contraction?

The Lanthanide contraction which is the decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, is due to poor shielding of the 4f...

01 March 2021 2,272 4 View

What are anisotropic electrical and optical properties of a semiconductor due to?

In some materials, properties such as band gap, thermal conductivity differ along different crystallographic axes. What are the basics?

01 March 2021 1,923 3 View