Anybody has done LCMS analysis for dyes and pigments ?

I need to do analysis for following Dye and pigment samples by LCMS . 1]Reactive orange 131 Dye 2]Red 49K 3]Reactive Red 241 4]Yellow 9K

04 April 2019 7,879 4 View

What health problems does polar region people facing?

What health problems does polar region people facing?

27 December 2018 3,638 3 View

Does anybody has reference article on sodium formaldehyde sulfoxylate by HPLC?

I wan work on sodium formaldehyde sulfoxylate by HPLC and then Mass Spec If anybody has reference article for it please share. Thank you

29 November 2018 9,709 3 View

What is the solubility of Pigment Red 170 for LCMS analysis?

What is the best solubility of Pigment Red 170? Please give a refernce.

25 November 2018 3,772 3 View

How mass accuracy get defined by Instrument?

What process is going on while deciding mass accuracy in mass spectrophotometer Instrument?

28 October 2018 6,194 1 View

During PAGE, sometimes the gel runs quickly while often it runs too slow. Can anyone tell the reason?

The current is kept constant but voltage keeps on increasing. I am not able to figure out why it does happen ?

13 June 2016 1,721 8 View

When we initialize DC differentiation using CD14+ monocytes some of the monocytes die. Do these dead cells have an effect on the DC differentiation?

I am differentiating PBMCs to iDC and currently leave the monocytes for 6 days with the cytokines, however after day 2 of 6 I notice dead cells (some monocytes and some DC). Do these cells have an...

23 March 2014 9,151 2 View

What is the cellular composition of a spleen of a mouse?

Hello, what is the percentage composition of CD3+ cell CD4+ cells CD80+ cells CD86+ cells CD11c+ cells in spleen of a mouse

07 July 2013 1,553 1 View

No title

03 March 2021 5,360 2 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

Which is a lucid standard comprehensive book to guide on psychological scale construction and its standardization?

02 March 2021 7,082 3 View

LOAD DISPLACEMENT CURVES Stiffness increasing in ANSYS non linear analysis. HOW CAN I CORRECT IT?

Hi. I am doing non linear FE analysis using a new material beam under flexural 2 point loading using ANSYS. I have defined a bilinear material model. The solution has converged. In results I am...

01 March 2021 9,911 3 View

How to choose ANN number of hidden layers and nodes?

Hello, Could you please share any interesting research explaining how to choose the number of hidden layers and nodes per layer in case of regression problems using ANN? Thank you, any help would...

01 March 2021 6,200 3 View

Can polymer concentrations be calculated based on the number average molecular weight?

Hello, I spin-cast two different polymers onto wafers and measure their height as a function of initial concentration. For polymer A, I have the weight-average molecular weight (Mw) as well as...

28 February 2021 7,882 2 View

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 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

How could I take into consideration the weights of observation in a system of seemingly unrelated regressions (SUR) in rstudio?

I build a model of 4 regression equations (probit and OLS) in R studio. I need to take the weights of observations into consideration. While it is simple to do so for every regression equation,...

27 February 2021 1,233 1 View

Can random sampling have inclusion criteria?

As random sampling means that everyone in the population have an equal chance to be chosen, can it have inclusion criteria? My research participants have been chosen based on the inclusion...

26 February 2021 6,905 10 View