How to build a polymer pdb file from a monomer pdb file, for using it is an initial configuration in Gromacs?

I am doing my Ph.D. in Materials Science and am completely new to Molecular Dynamics Simulation and Linux. I am using Manjaro Linux 20.1 and have Gromacs 2020.4, VMD 1.9.3, packmol 20.0.10,...

28 October 2020 1,051 3 View

Why are there flow of water from land towards ocean?

Water in land always has a tendency to move towards ocean. I eager to know the reason behind this.

23 January 2020 3,069 5 View

How is dissolved salt in surface water originated in inland areas?

Inland surface contains so many dissolved salts into it. What are the sources of these salts, I like to know.

23 January 2020 7,686 4 View

Which has more evaporation rate surface water or sea water and why?

Surface water resources like ponds, lakes, reservoirs and rivers and sea water undergo solar evaporation in presence of sunlight. I like to know which one has higher evaporation rate.

22 January 2020 4,114 5 View

How can organically bound Nitrogen be determined in soil/sediments?

Most fraction of nitrogen in soil belongs to organic matter present in soil, but soil contains other fractions like nitrate, nitrite and ammonia form together. Then how organic bound nitrogen...

17 January 2020 6,570 6 View

Why are essential elements present in earth crust in abundant than toxic heavy metals?

The composition of earth crust reveals that the biological essential elements are abundant in comparison to the toxic group of heavy metals. What could be the reason behind this?

16 January 2020 2,028 3 View

I am looking for a simultaneous heat and mass transfer model with finite differences?

I am trying to come up with a code for simultaneous heat and mass transfer for water evaporation owing to solar flux. The incoming heat flux contributes to volumetric heat generation within a...

24 October 2018 8,964 1 View

Is there any HPLC method for lipase activity?

I am trying to find lipase activity in mustard seeds. I developed a method by potentiometry but i am not getting repeatability. Is there any other method to estimate lipase activity.

16 April 2018 4,654 3 View

Please suggest me Scopus index journal of Management in india?

As per my PhD submission i need to do 3 scopus indexed papers, can any one suggest me to process in India.

31 March 2018 5,954 9 View

Sampling distribution for nanomaterials ?

17 April 2016 4,396 6 View

How optimize the Size Exclusion Chromatography?

Hello! I'll do a size exclusion chromatography, but I only have an open column, and I'll perform the peptide extraction from yeast, using buffer lysis (sodium phosphate 50 mM/NaCl 30 mM/DNAse and...

01 March 2021 2,215 2 View

No title

01 March 2021 3,905 5 View

What test should I use to compare two or three means, if data is not normally distributed but sample size is > 30 in each group?

I personally feel this as a most confusing question. As per my understanding, if sample size is > 30, and sample is skewed, we can still use paramteric approach, as it will follow Z...

01 March 2021 1,587 6 View

Is it necessary to report effect size (ES) in statistics of biomedical research given that we already report p values routinely?

Pls share your thoughts

01 March 2021 7,330 4 View

Why there are two peaks while using the mie plot of Silver nanoparticle?

Hi, I am trying to learn the theoretical modelling of silver nanoparticle using the Mie scattering theory. After that, I discovered a software named Mieplot developed by Philip Laven, where it...

25 February 2021 7,493 6 View

How to calculate Z (the number of molecules in a unit cell) for calculating theoretical density?

I am trying to calculate the theoretical density of my ceramics materials. I use the formula below to calculate the theoretical density: Theoretical density = (Molecular weight x No. of molecules...

24 February 2021 3,823 2 View

How to handle studies which report perfect effect sizes in a meta-analysis using Pearson's r?

I'm in the process of updating a meta-analysis and in one of the new studies, effect sizes are reported as Tau-U. Two of the effect sizes are reported as Tau-U = 1.00. I am using Andy Field's...

24 February 2021 2,265 3 View

Sample size determination for non-parametric tests?

How do I run a a priori sample size determination for non-parametric tests, like the Mann-Whitney U-test and the Kruskall-Wallis or other non-parametric tests that accord with the unpaired t-test...

24 February 2021 166 6 View

How to determine a priori sample size for t-test with unequal means?

I need to conduct a a priori sample size determinations for t-test with unequal means, but I don't know the sizes of the groups nor the ratio of both groups... Can I do a sample size determination...

24 February 2021 8,289 3 View

Anybody write me the name of scopus journals in commerce, management, economics areas. Which publish without any charge?

Please write those scopus journal names for which you have good experience with them.

24 February 2021 6,210 1 View