What is the sampling technique used in an online survey?

I am asking about the sampling technique used in an online survey. The survey will be distributed online via social media channels. We are targeting adolescents. The sample size will be estimated...

11 July 2020 8,685 14 View

What is the best free program for the analysis of H-NMR spectrum?

I need a free program to analyze H-NMR spectrum. Any recommendations?

29 May 2020 1,561 2 View

Hi Everyone: I have files with 300 dpi i want to keep the same resolution when i insert them into word docx. How can i do that ?

I keep loosing resolution once it is inserted in the word document. Thanks in Advance Noha

20 April 2020 7,241 3 View

Is the annealing temp. for a pair of primers is set according to qpcr kit itself or the primer itself? and which is better ... 2 or 3 step- reaction?

Hi, I am working on gene expression, and want to ask about 2 issues ... I am using SYBR green, but I am confused because each kit has its own specific Ta, while the primer itself has a different...

23 October 2019 9,927 3 View

As regard cDNA synthesis by COSMO cDNA kit Willowfort the recommended RNA concentration is 0.4 microgram, how to be calculated ?

RNA by nanodrop ranged from 60-100ng/ml extracted from blood by quiagen kit

24 June 2019 2,380 1 View

Any suggestion for journals that concern with Big data?

I am searching for a free journal that could accept my big data analytics survey paper with minimum days of reviews. Any suggestion for trusted ones? Thank you.

02 April 2019 2,866 3 View

What are the most common big data preprocessing techniques and recent research issues?

I am interested in learning more about preprocessing step within the analysis process of big data I need to know more about the recent methodologies, techniques and the relevant research issues.

08 November 2018 4,059 3 View

HOW can i minimize the number of hits made by the designed primer to only the intended sequence?

i have designed a primer but i found it gives 200 hits over than the intended sequence (5 of them in the organism that i work with). this give poor pcr results. i want to avoid this but i don,t...

01 September 2018 3,064 3 View

Any collaborators on cell cloning for protein expression ?

please contact me for details... Thanks

13 August 2018 2,830 2 View

Could I use sucrose triton lysis buffer for RNA isolation???

Hi, I usually use sucrose lysis buffer ( 0.6 M sucrose, 0.02 M Tris base, 0.01 M MgCl2 and 2% triton) for RBCs lysis in DNA extraction. After initial RBCs lysis and washing, a pellet of WBCs is...

10 July 2018 5,442 2 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

What is the most Operating System (OS) which can be INSTALL on Tiny hard devices like Raspberry Pi (RPi) hardware ?

I'm targeting to deploy a mesh network and manually configure MANET routing protocols. I'm preparing scenarios, architectures, and hard devices needed to do that. Are there some step-by-step...

03 March 2021 1,931 5 View

Why should we choose deep learning to machine learning? Why is CNN better for image classification? Can I get Typical Answer?

What Characteristics makes CNN work better?

03 March 2021 1,458 4 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

What are some of the research gaps in machine learning and artificial intelligence in africa?

i would to know some of the research gaps in the artificial intelligence field in most african countries.

03 March 2021 6,145 3 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View