MVN, how to conciliate contradictory results from Multivariate normality and Multivariate outliers test?

Dear colleagues, I'm working with Path analyses in lavaan and MVN packages. There are some results that for me are confusing and features from the MVN that I do not know how to set. My dataset is...

18 February 2021 190 3 View

How can I estimate and plot Logarithmic Error Bars (in Excel, preferably)?

Dear Dr.colleagues, I am currently plotting the dynamics of an infection in Excel. For each sampling day, I plotted the mean infection load of the population, using the standard error for the...

07 January 2021 2,069 3 View

What "planned comparisons of LS means" in Statistica is doing?

Dear colleagues, I am tryng to understand what the option "planned comparisons of LS means" in Statistica is doing? Let's say I have a factorial ANOVA with two categorical explanatory variables:...

06 December 2020 9,272 4 View

Is it possible to search for a specific pixel value within a raster frame and extract them at the same time?

Hello, I am looking for a method/s where the DN value of a pixel is available and will be used as an input for a query to search the whole raster frame for similar DN value. Do you have any...

02 January 2020 6,124 3 View

Is the Ethics the ultimate limit of strategy?

In our work of strategic convergence between East and West, we have detected that the tacit or explicit limit of the decisions and strategic actions tends to be ethics.

02 January 2019 7,856 6 View

Does anyone has a protocol for measuring dopamine using and ELISA? . Does ELISA id DA levels or only TH or DAT?

Hi All, I'm completely new in the dopamine world and ELISA. I collected fresh brain samples and I have them in -80C. Do you have any protocol for ELISA brain sample preparation? I know the kits...

12 August 2018 1,811 3 View

Help to elaborate a 10mM Sodium acetate pH4 buffer?

Hi guys I am very stuck trying to do this buffer and each place say something different. Can you help me with this? Thanks a lot!

29 July 2018 9,650 7 View

What is the best method to analysis of longitudinal data in epidemiology?

Hi, I have infestation of dynamics of two different groups of hosts. Total of 20 points of measurement per individual, 10 individuals per group. I want to compare the dynamics of the 2 groups over...

04 November 2017 672 8 View

Checking for multivariate outliers with categorical and ordinal variables

25 July 2017 3,076 9 View

Keeping the lower order effects in a model

Good morning, It seems to be assumed that we should "always leave in any lower order terms, significant or not, for any higher order terms in the model. That means you have to leave in all...

22 July 2017 3,446 22 View

Does Napabucasin soluble in dichloromethane and in ethanol?

I need to prepare a solution of Napabucasin (inhibitor of cancer cell stemness) in dichloromethane. The drug is expensive, so maybe somebody already tried to do it. If it is soluble, what is the...

02 March 2021 9,945 3 View

What is the state of the drug inside solid lipid nanoparticles (SLNs)?

I am a little confuse with the mechanism of solid lipid nanoparticles (SLNs). The main point of encapsulating drugs into SLNs is because some drugs have low solubility in water. Therefore, SLNs...

01 March 2021 3,703 3 View

Do you kow of any database containing data on retention time, log P and polarizability for a large number of molecules?

Hi, I am a chemistry undergraduate doing my dissertation project on HPLC. In my project, I need to predict the HPLC retention time of 20 aromatic molecules, the calibration set. To do this I will...

24 February 2021 2,602 1 View

How to seperate PEG-4000 from aqueuse phase ?

Hello everyone , Please tell me if It possible to seperat POlyethelyn glycol -4000 from an aqueuse media by other ways rather heating . I have tried salting out by electrolyte solution to...

22 February 2021 7,285 5 View

How to analyse monosaccharide compositions from soluble fiber?

I have tried to hydrolyze the sample using 2 M TFA at 100C for 24, 48 h and 120C for 2 h. From these conditions, the HPLC results showed that peaks were not separated into monosaccharide. I found...

17 February 2021 5,230 1 View

No title

Hello. I ask for help - I need to get lithium tetraborate (soluble salt) from lithium carbonate and boric acid. In literature, everything seems to be simple - mix, ignite and - it's done. But it...

16 February 2021 9,523 2 View

Is There are any idea to achieve H NMR signals for swollen compound ??

the samples are not completely soluble - just swelled the solvents that's mean the sample may be partially soluble any suggestion, please

16 February 2021 8,801 3 View

Which non-coordinating solvent dissolves anhydrous Iron(II)chloride?

Hallo, i am looking for a non coordinating solvent that dissolves anhydrous FeCl2 for a synthesis in which i can not use solvents like thf, pyridin etc.. I already tried benzene (no solubility),...

11 February 2021 6,105 1 View

DMSO concentration in cell culture? Precipitating while PBS is added?

I am testing a compound on RAW 264.7. the compound is soluble in DMSO. but to ensure that final concentration of dmso is not more than 0.1%, we are first dissolving it in dmso and then diluting it...

11 February 2021 1,136 3 View

Solubility of PMP in solvent?

What is the maximum solubility limit of poly(4-methyl-1-pentene) in N,N, dimethylformamide? I gone through solubility parameter concept but I did not get the answer for maximum amount of polymer...

02 February 2021 947 3 View