Is there any mathematical relationship between pH and zeta potential?

I am looking for a mathematical relationship between pH and zeta potential. Is there any idea in this regard, please?

26 November 2020 3,411 3 View

When Correlation is high and RMSE is High too- How to select good model ?

Dear all, I wanted to evaluate the accuracy of a model using observation data. My problem is the correlation of the model with observed data is really good (bigger than 0.7) but RMSE is very high...

02 November 2020 9,005 3 View

How to locate nodes in mass or stiffness matrix?

I've extracted mass and stiffness matrices from a modal analysis in Ansys. I need to know how the elements of each matrix is related to node ID. Anyone can help me with an ansys command to find...

11 September 2020 9,462 4 View

How to extract all key words plus of all publications of an author from web of science?

Its an striking skill for a researcher.

27 July 2020 6,421 2 View

How to visualise a journal issue?

Dear all, One of my friends is a editor in chief of a geospatial journal and he asked me to visualise the recent issue of the journal for publishing on the journal website. I have some ideas, for...

22 July 2020 6,275 4 View

What is the best input signal for training the network and estimating parameters by a neural network?

Hello I want to model and estimate parameters of an aircraft by AI methodology and the input signal has great effect and role in simulation and data collecting. thanks

11 June 2020 3,235 4 View

Why does the Editor reject the article based on only one reviewer's comments?

Hi everyone, I submitted two of my papers to a well-established journal in Elsevier. However, in both cases, the Editor rejected the papers based on the comments of only 1 reviewer without asking...

02 April 2020 3,210 19 View

Where should I register my systematic review and meta-analysis?

Dear colleagues, Is it alright to register a systematic review and meta-analysis (focusing on human health studies) with the International Platform of Registered Systematic Review and...

25 March 2020 5,382 9 View

Why Aluminum powders color sometimes change after Ball Milling?

Dear viewers, I am working on ball milling of Aluminum powders for a couple of years and a question yet not answered to me is that "why sometimes- not always or so many- I encounter a color change...

24 March 2020 2,237 6 View

Hi, I need to simulate an LPG in fiber by COMSOL. is there any step-by-step manual for this purpose?

Hi, I need to simulate an LPG in fiber by COMSOL. is there any step-by-step manual for this purpose? thanks for any help in advance

18 March 2020 728 3 View

Can I arbitrarily take a cycle number of 40 for the gene that was not expressed at all in qPCR results calculation?

I ran RT-qPCR for a control and a treated group and it appears that my gene of interest was not expressed at all in any of the subjects in the control group. So I was wondering if I could...

20 February 2021 6,243 10 View

Why the storage moduli E' decrease with highr fiber volume?

Hi guys, I am facing problems to interpret a DMA results. Material: Composite Bisphenol A + curaua fiber What is being tested: the influence of fiber volume on the composites properties...

12 February 2021 174 7 View

How to manually plot DMA data from excel?

I submitted three sample materials for DMA analysis. Resulting data (frequency, temperature, E', E'', dL, tanD, Ft, time) came out in excel file along with the graphs of all materials from the...

04 January 2021 4,540 3 View

Where can I buy BrHPP (bromohydrin pyrophosphate) for cell cultures????

I need to get BrHPP for expanding Tgd cells, so if anyone knows about a biotec/chemistry company that has it commercially available I would appreciate the information. Thanks!

20 December 2020 7,022 3 View

How to convert Time Domain DMA data to prony series?

Hello Everyone, I have Time Domain DMA data of rubber i.e. loss modulus and storage modulus varying with time with constant 1 hz frequency. I need to convert it into prony coefficient. I need to...

09 December 2020 5,211 3 View

What would cause different shape DMA loss modulus curve in different batches of PC+ABS?

I have some DMA curves of PC+ABS from different batches. The PC loss modulus peak is fairly consistent but one batch has a peak value 10degC lower than the rest. Another peaks at the normal value,...

06 December 2020 809 2 View

How do we determine the viscoelastic parameters (E', E", G', G", n) of a molten viscoelastic material?

19 November 2020 2,606 7 View

Is Uniform Convergence property contradictory to No Free Lunch Theorem?

In Statistical Learning Theory, Uniform convergence means for a hypothesis class H, given m(\delta, \epsilon), for arbitrary distribution over domain (X, Y), with probability $1- \delta$, the...

03 November 2020 7,732 5 View

How can we optimize a water distribution system if we do not have the zones' topology (pipes graph )?

Hello everyone, My issue is about a water distribution system that I am working on a zone of the system where does not exist any plan for the place of pipes. However, we have the place of...

14 September 2020 5,978 6 View

What happens when the loss modulus never peaks during a DMA temperature sweep?

I am curious what it means when the loss modulus, E", never peaks during a DMA test (increasing temp / constant frequency). I would imagine that this material never dissipates energy over the...

01 September 2020 8,939 7 View