Error While Solving Stiff Problems In COMSOL?

Hi, So I am trying to solve a stiff problem using Global ODEs and DAEs. The problem has 32 differential equations and I have inserted all the initial values correctly, however, I keep getting this...

28 January 2021 1,872 3 View

Any suggestion of free of charge questionnaires that measure mood states?

I need a free of charge and short questionnaire that measures mood states. The questionnaire will be used as in a neuropsychological evaluation study. It is well known that mood states can...

16 January 2021 8,284 4 View

How to solubilize protein?

Hello, I have cloned my gene of interest in a bacterial expression system i.e. BL 21 Gold (DE3) and checked for protein production and solubility. Good amount of protein was observed on SDS-PAGE...

15 January 2021 7,063 5 View

Why my deltaATG mRNA is in polysome fractions ?

Hello everyone, I'm doing polysome profiling to answer a specific question. I study a gene which produce an alternative transcript and it's translation is controversial (extremely lucky if you...

16 December 2020 7,622 2 View

HowScholarships, Fellowships and grants in Materials engineering for international students to study abroad?

On Line student doctorant looking for first Master PhD student doctorant as UNICAF now in Materials engineering for international students to study abroad on Line and To Bricks LTGS and To have...

10 December 2020 3,686 3 View

What is the influence of reduced graphene oxide (rGO) in a p-n ternary photocatalyst?

04 December 2020 9,019 2 View

Why is the protein of interest soluble, but inactive?

Hello, I have cloned and expressed bacterial protein in E. coli system in the soluble fraction. However, on performing the activity assay, no activity with the substrate is seen. The standard...

24 November 2020 8,012 5 View

Is It Possible to Produce Yellowish Graphitic Carbon Nitride Using Urea as a Precusor?

Hello, Recently I have been attempting to synthesize graphitic carbon nitride for the purpose of photocatalytic conversion of carbon dioxide to methane under visible light. The issue I am facing...

12 November 2020 6,854 4 View

How Important Is the Rate of Heating During the Synthesis of Carbon Nitride?

09 November 2020 6,096 2 View

What is the influence of rate of heating on synthesis of graphitic carbon nitride (g-CN)?

16 October 2020 4,216 4 View

What is the procedure to determine the permeability of concrete?

can anyone help me in this, it will help me with my research work

01 March 2021 834 3 View

How can you bring two structures together to create an adhesive bond in LAMMPS?

I have created an Ice 1h crystalline structure and an Aluminium substrate structure and equilibrated both at 250K. Now I need to bring them together in a way that an adhesive bond is created....

01 March 2021 3,325 2 View

Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS?

I need to model masonry and reinforced concrete minarets for my MSc thesis. Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS? (Or any other program for just...

01 March 2021 736 3 View

Apart from Nanosilica and CNT's what are the other nanomaterials readily available to use in concrete mixture?

Nanotechnology in concrete materials

01 March 2021 3,379 3 View

Concrete compressive strength databases?

I am looking for datasets similar to this one: http://archive.ics.uci.edu/ml/datasets/Concrete+Compressive+Strength I am looking for concretes with different types of aggregates (Recycled,...

27 February 2021 6,801 3 View

LEDs on Vis Light photo degradation of MB water sol via N doped TiO2 in a mini flume?

Good day to all, I have no experience with light emitting diodes. I am building a glass mini flume to demonstrate the photo degradation of Methylene Blue in water running over self cleaning...

26 February 2021 4,026 5 View

What is the best way to calculate the angles of twist for concrete columns subjected to torsional moment using finite element software?

In Finite element software like ANSYS , there is difficulty in obtaining direct results of twisting of concrete members because SOLID65 which is the unique element designed to represent concrete...

26 February 2021 3,806 2 View

Compute for the total volume of concrete needed for the concrete pouring of the foundation including its column up to NGL only as shown in the plan?

Looking for the quantity of cement, sand, and gravel of footings and columns. Thank you!

25 February 2021 3,092 2 View

Best FE Program for Concrete Strengthened with FRP Sheets?

Colleagues, I have been using ANSYS to model concrete strengthened FRP sheets, but less than happy with it. Any has recommendation for efficient, easy to use FE program for modelling concrete...

22 February 2021 7,528 3 View

Is there a Constitutive model for concrete with Sea-Sand?

Hi I am running a simulation in Abaqus for a concrete beam. Its fine aggregate replaced with sea-sand. I was wondering if I could find studies that measured the ultimate strain of concrete made...

22 February 2021 6,409 2 View