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

Does any one know how i can prepare liver tissue with transmission electron microscope with good fixation?

i have problem in preparation of liver tissue with bad cell organelles and how i can adjust osmolarity

03 March 2021 8,890 1 View

I need to image mesoporous silica nanoparticles that are in ~100 nm size and do high resolution TEM to look at mesopores. what grids should I use?

Need to image mesoporous silica nanoparticles using the TEM. Also, need high resolution TEM images to see the mesoporous structure. Kindly suggest what kind of grids to use. Thanks, Shatadru

02 March 2021 1,787 2 View

Shall I skip the measurement model in SmartPLS?

Hello everyone, I had run a mediation model in SmartPLS using questionnaires that were already validated among my statistical population. A professor who edited my paper -though she is not...

01 March 2021 3,052 3 View

SEM or Multiple Regression for an analysis without Latent Variables?

Hello, I have three hypothesis to test, all with the same IV. I am testing if the effect of the IV on the first DV is mediated by awe. I am then measuring whether the effect of the IV on a...

26 February 2021 8,399 5 View

How to clean up TEM grid with plasma cleaner?

I need to clean the hydrocarbon contamination on the carbon substrate of TEM grid. However, I heard that substrate could be broken by the powerful plasma. My substrate is pure carbon, with ~3nm,...

23 February 2021 3,262 5 View

Magnetismic Gravity in the universe?

MAGNETISMIC GRAVITY What is magnetism? Something magnetic has a + and - charge. If 2 + or - are pushed if + and - are pulled. But what is the main reason for this? Why does magnetism have a pull...

21 February 2021 9,538 3 View

Specify the Burgers vectors for dislocations, which cannot be uniquely identified.?

1. A bcc metal single crystal was sliced along (1 -1 0) plane for TEM study. Assuming that the TEM available is equipped with a goniometer stage which tilts up to 45o. The Burgers vector of...

20 February 2021 2,370 1 View

Can fractal dimension of thin film surfaces affects the electrons energy states?

As fractal dimension of a thin film surface implies the irregularity in the surface. Is it possible that the energy states of the electrons are also affected by the fractal dimension?

19 February 2021 5,509 3 View

Can the intensity of this broad band in XRD mask other crystaline phases present?

I obtained a XRD diffractogram with significant broad band at low 2theta levels, also around 30 2theta another smaller broad band appears. It all points out to the existence of an amorphous phase....

19 February 2021 8,414 4 View

If the electron is a wave, then what is its nature? Is it an electromagnetic wave?

If the electron is a wave, then what is its nature? Is it an electromagnetic wave? Thank you very much,

17 February 2021 9,024 4 View