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

How to determine the sample size from a population of 16000?

I want to draw the sample from KLEF (KL University), which consists of Students, M.tech scholars, PhD scholars and Teaching and Non-teaching staff. Topic is customers loyalty on E-commerce sites...

28 December 2017 7,805 7 View

How to calculate BREQ 3 questionnaire?

how to calculate BEHAVIOURAL REGULATION IN EXERCISE QUESTIONNAIRE BREQ 3 ,which contain 24 questions and each question has 5 answers (0- Strongly disagree , 1-disagree, 2- Neither agree nor...

02 March 2021 811 3 View

I am interested in medicinal chemistry field, which books are highly recommended to learn from?

I am at the beginner level in drug design and drug discovery, and I am interested to learn more about this field. Which books are highly recommended to start from and gives me all essential...

02 March 2021 8,437 2 View

Please suggest a good text book for "Research Methodology in Life Sciences". Which book would be good for PhD Scholars?

Please provide Book Title and author name

02 March 2021 9,059 3 View

Could any one guide me, to write research proposal for grant? ?

We have one plant, the local people using this for controlling blood sugar, the toxicity and antidiabetic activity of the plant is not reported yet, please guide from whag should be the process ?...

02 March 2021 2,300 1 View

Is anyone familiar with the cyclic compressive fatigue testing (BS EN 12697 - 25) ?

I would like to get more information on the cyclic compressive fatigue testing (BS EN 12697 - 25) which is typically done for bituminous material in pavement design. Any one can advise on the...

28 February 2021 2,004 3 View

What is Flat Lens Antenna?

28 February 2021 5,433 3 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View

How to use measure capacitance change in COMSOL time dependent study ?

I want to measure change of capacitance due to relative displacement between two parallel plates in COMSOL. Distance between two plates changes with time. So I'm using a time dependent study but...

26 February 2021 8,567 3 View

I am looking for a simple software program to model 3D chemical bonds. The purpose is to generate high-quality graphical abstracts. Any suggestion?

Hello everyone: I am looking for a simple software program to model chemical bonds. The purpose is to generate a high-quality graphical abstract for a top leading journal in the field of...

23 February 2021 8,012 3 View

Missing Data in Pretest and Post test- Experimental Research design?

Hello all, I am analyzing some pretest and post-test data that were given to evaluate knowledge of targeted vocabulary before and after the intervention. Pretest and post-test are identical and...

23 February 2021 9,400 7 View