How to perform Gaussian optimization for a polymeric structure?

I am trying to perform Gaussian optimization of a polymeric structure with 250 atoms. It is made up of only C and H atoms with several aromatic phenyl ring interlinked by C=C. Every time I am...

04 January 2021 9,616 2 View

Can I calculate discharge of streams/ watersheds in GIS without field data?

I am required to do a project where I have to calculate discharge of streams/ watersheds in a high altitude area with extremely treacherous terrain. Will it be possible to achieve this objective...

27 December 2020 9,101 5 View

If one publishes in a journal with impact factor >1.4 and which is not included in NAAS list of journals, will the paper be equally valued by ICAR?

I understand the difference between NAAS score and Impact Factor but is it okay to publish in a non-NAAS, high IF journal? How will it be valued in ICAR interviews and related recruitments?

10 September 2020 7,575 3 View

How can I perform sensitivity analysis using R?

I have below model: X = A*B Where A = a list of values with Lognormal distribution (size = 13) and B = another list of values with Lognormal distribution (size = 13) How can I perform 1st...

05 July 2020 1,963 1 View

We have some proteomics data from 2017 and 2018 for which the raw files are missing, but we have the processed raw data. Is the data publishable?

We are missing some mass-spec raw files from 2017 and 2018 when deposition of raw files were not mandatory. Since most of the journals now require raw file availability through ProteomeXchange,...

14 June 2020 6,064 1 View

Why second stage juveniles are used for DNA extraction from nematode for identification purpose? Can I use female or male for the same purpose?

I am working on rice root knot nematode. For identification purpose mostly second stage juveniles are used. I wonder why females or males are not used commonly for the same purpose? I am using...

26 March 2020 7,419 3 View

Is there any alternative cheaper TaqMan universal master mix available in the market other than Thermo with similar sensitivity?

I am looking for a cheaper TagMan master mix for qPCR. I use FAM labeled primers for gene expression, does anyone have any suggestions

17 March 2020 1,105 2 View

What is the effect of Bejan number on heat transfer applications?

In our case the Bejan number decreases with the increase of mass flow rate or Reynolds number of the multiphase fluids through a packed bed. However, if mass flow rate increases Nusselt number,...

27 December 2019 6,088 3 View

Is range of the induced vector measure of a Riemann-Pettis integrable function relatively compact in X?

A function $f\in X^{[a, b]}$ is said to be Riemann-Pettis integrable if $x^* f$ is Riemann integrable for each $x^*\in X^*$ and if for each interval $I\subset [a, b]$, there is a vector in $x_I\in...

27 December 2019 7,532 9 View

Higher or lower values of local entropy generation rate is desirable for the better heat transport?

Local entropy generation rate (comes from the 2nd law of thermodynamics) should be higher or lower for a heat transfer device for its better heat transport performance?

22 December 2019 5,338 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 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

Can polymer concentrations be calculated based on the number average molecular weight?

Hello, I spin-cast two different polymers onto wafers and measure their height as a function of initial concentration. For polymer A, I have the weight-average molecular weight (Mw) as well as...

28 February 2021 7,882 2 View

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

Should we reduce the standard unit of length to 0.31951540592 meter ?

The reasoning behind this question is to align the ratios of the proton potential in energy per charge to the speed of light in distance per time. As these two dimensions appear to be related,...

27 February 2021 947 7 View

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25 February 2021 5,713 1 View

How do you mesh a thin solid in Fluent?

Hello, I have used the shell function on SpaceClaim to create thin solids for the model I am studying. These are contained within an enclosure for my study. I chose this approach as it avoids the...

24 February 2021 8,856 3 View

No streamlines present in a small region inside a flow. This means exactly what?

No streamlines present means whether the flow is getting obstructed there and the velocity inside the region is zero? Or else, the fluid is trapped inside that region with a nonzero velocity?...

22 February 2021 5,249 10 View

How to resolve Gaussian error termination " Error termination via Lnk1e in F:\G16W\l103.exe" for TS(QST3)?

When I run the job for TS(QST3) in gaseous phase, it was completed without any error. But when I add water in CPCM model it terminated with an error: Inconsistency: ModMin= 2 Eigenvalue=...

21 February 2021 3,198 2 View