Is it possible that non-sea salt fraction has negative value?

Hi, I'm trying to calculate sea salt and non sea salt fraction from water soluble ion data (anion and cation). I calculate sea salt fraction by using using ssNa+ as specific marker and knowing the...

29 December 2020 9,813 9 View

When would you use a structural equation model?

I have read through different sources and answers before, and they have different views. What is the clear or concise thought beyond the reason for using SEM in the first place?

21 December 2020 4,228 3 View

Stability and assay of drug dissolved in acetone?

Product Collomack is contains salicylic acid that dissolved in volatile solvents such as ethanol and acetone. Each 1g of solution contains: Salicylic Acid 0.1g( Acrtic Acid 99% , Docusate sodium,...

16 September 2020 7,496 3 View

[RT-PCR] Which one should I amplify, the complete mRNA or CDS?

I want to use one step RT-PCR to amplify human RB1 gene (mRNA-->cDNA). When I looked at NCBI nucleotide database (NM_000321.2), the gene has CDS on it. Which one should I amplify, the complete...

05 January 2017 5,224 4 View

What are the potential sources in the environment of the valeryl salycilate, dimecrotic acid, hymecromone and phathalic acid mono-2-ethylhexyl ester?

They are detected using LC-qTOP-MS

11 March 2013 5,176 1 View

My PCA model showed PC1 accounts for an amount twice as small as the variance of PC2, could this be possible?

PC1 (20 %) and PC2 (40%).

01 March 2013 1,774 3 View

Meta-Analysis of the effect of Fermented SBM on broiler

I am planning to perform a meta-analysis to examine the effect of fermented soybean meal on broiler performance. So far, there have been 14 papers suitable to be included (I have selected after...

01 January 1970 6,542 3 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

How climate change will influences human and animal behavioral change?

The role of climate change influencing the human behavior as well as economics interest

01 June 2021 0 0 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 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

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 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