Can any one help about modeling and analysis: "Effect of vibration on Heat transfer of water in pipe" in COMSOL Physics?

We have a one meter long copper pipe through which water passes at a certain speed. The outer wall of the tube is covered by the heater where all the energy of the heater is transferred to the...

02 January 2021 5,965 3 View

Is there any suggestion for designing the result section of a population-based study about pattern of dug use when the prevalence of drug use is low?

I'm working on a database of a population-based cohort data on the subject of drug use prevalence and its pattern (e.g., ATC drug classification). The ISSUE that I noticed during the analysis is...

14 November 2020 1,186 3 View

Next generation sequencing technique for hereditary fructose intolerance ?

I have about 30 blood samples from people with inherited fructose intolerance who need to use the next generation sequencing technique. Is there a research center or person doing this test to work...

02 November 2020 3,463 3 View

Next generation sequencing for free services?

what companies can provide Next generation sequencing services for free or at the lowest cost?

25 July 2020 6,514 3 View

Stable passivation Layer (SEI layer)?

I have difficulty figuring out what exactly is the SEI layer in the battery field. I am trying to find out how it is formed and its function and influence on battery. I appreciate having your...

08 April 2020 5,220 3 View

How to oxidize Au+ salts to Au3+ salt?

I prepared HAuCl4.3H2O from the reaction of metallic gold and aqua regia. But due to overheating, my product converted to dark brown (Which I suspect due to the formation of AuCl). Is there any...

16 March 2020 2,145 4 View

What is the best adhesive for polyurethane sheet or an inter layer, which could easily laminate on surface and also detachable?

i want to laminate polyurethane based polyester on some surfaces such as glass and metal but detaching is a problem, what is the best way to detach without damaging the main substrate?

05 July 2019 7,927 5 View

What is the lowest concentration of PAGE gel you used?

PAGE is used for various samples. For biochemists, SDS-PAGE is used to separate proteins. My question is about the concentration of PAGE. What is threshold concentration of acrylamide for...

09 January 2019 2,350 4 View

Reguired equipment and facilities to start doing research on Solar Water Splitting?

To Whom It May Concern I have decided to work on Solar Water Splitting as my master degree's project. I need to know about needed equipment for doing my project. I am so thankful to get some...

24 December 2018 1,203 14 View

What techniques can be applied to extract data from text? and which one is the most efficient?

Hello, Does anyone have any idea about the efficient methods of extracting data like age, name, email and so on from unstructured data like texts?

09 October 2017 1,706 6 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View