How can I validate the UV spectroscopy?

can I compare UV spectroscopy reading with nanodrop reading to validate the UV spectroscopy? or is there a better way to know if the UV works well or not? Note: we use it in DNA, RNA &...

12 December 2020 4,869 2 View

What's the right way to Tween 20 storage?

02 December 2020 9,955 2 View

What are the optimum ratios for mixing nano materials with coating to improve its properties, for air pollutant treatment?

Improving the properties of local paints

02 October 2020 4,747 3 View

What's makes RNA (and not DNA) bind to the silica spin column in commercial kits?

In silica spin column-based kits, if the spin column material is the same and the binding to the column occurs by using ethanol and Guanidine salts. Then, what's the difference between the RNA...

20 September 2020 4,798 1 View

Do you think to increase the COVID-19 RT-qPCR tests we can use multi sample pools?

Do you think to increase the COVID-19 RT-qPCR tests we can use multi sample pools?!

26 May 2020 7,360 3 View

Why Non specific bands of PCR reaction appear while using specific primers for tobamoviruses?

i have done RNA extraction and cDNA for tobamovirus then i made a PCR reaction using primer pair Tob uni1/Tob uni2 according to the protocol in Letschert et al., 2002 ( annealing temp. 60C for 45s...

09 December 2019 7,276 3 View

How can extract protein from fungi cells ?

how can extract protein from fungi cells ?

10 December 2017 8,789 5 View

Simulate of laminar smoke

I want to simulate a smoke in a laminar flow like a smoke of a cigarette, what is the CFD program can simulate its cases?

15 August 2017 9,343 15 View

Which CFD package can formulate the flame and get the thermal analysis on its case?

I like to simulate the flame of the fire and need help to know the best program for that.

15 August 2017 2,190 13 View

Help Please!! how to solve the error "too many attempts made for this increment" in abaqus?

i am applying a load of 50KN gradually on a reinforced concrete beam, i'm unloading this load using an amplitude to get the loading and unloading versus deflection graph.i have used concrete...

09 June 2017 3,129 14 View

How to define and get results (stresses) for certain points of a model in abaqus, using python? When the size of the model changes?

I want to do a parameter study of a aixsymmetric cylinder in Abaqus. I want to create several jobs where I get the stresses for 3 different points in my model. These points are defined. I wrote a...

01 March 2021 10,078 1 View

Joint behaviour in Abaqus is not captured well?

I am working on roof joint and trying to simulate the behaviour in Abaqus. I am successful in running the model but the final graph does not follow the experimental curve in the negative direction...

01 March 2021 6,661 3 View

What are the countries most affected by extreme rainfall as a result of climate change?

Increased heat, drought and insect outbreaks, all associated to climate change, have increased wildfires. Decreasing water supplies, declined agricultural yields, health impacts in cities owing to...

01 March 2021 7,168 9 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

What is recommended for solid domain in ANSYS FLUENT?

Should I mesh the solid domain ? or should I use wall thickness? or Shell conduction? for Heat Transfer between two fluids of a Heat Exchanger. what is recommended?

01 March 2021 9,785 3 View

How to assign different material properties to each element in Abaqus ?

Hello, I am writing a python script to generate my model and write the input file. The problem is I have 1000 elements in my mesh and I want to assign different material properties to each...

01 March 2021 9,511 3 View

Heat exchanger with liquid Nitrogen as coolant?

I want to cool Natural Gas from 195 Kelvin to 138 Klevin in a heat exchanger by using liquid nitrogen as the coolant medium. When entering the heat exchanger, the liquid nitrogen will have a...

01 March 2021 6,450 5 View

How to define tie constraint between rigid body and another part in dynamic explicit model of Abaqus?

Hi dear researchers I connected a rigid body into the part of my structure by tie constraint and then I added displacement to rigid body, in static general step every thing is fine and these two...

28 February 2021 3,442 2 View

How can i resolve the "final solutuin is not converged" error in Comsol for my heat transfer simulation??

I have been trying to simulate heat transfer problem in Comsol 5.5 for long time but it always throw an error stating: "Failed to find a solution. Maximum number of Newton iterations...

28 February 2021 8,626 3 View

PUC19 as a transfer plasmid for lentiviral delivery?

Hello, Is it possible to use pUC19 as a transfer vector to be packed in using the second generation viral particles packaging system( pMD2.G; psPAX2 plasmids)? As far as I understand it there is...

28 February 2021 4,868 2 View