Does anyone know about the ionic mobilities for boric acid, glycine and citric acid?

More Tanja Kurzenknabe's questions See All

How to refine search results?

How to refine search results? Hi! How can i refine my search results? And where can i see how much results did i got? I am shown more than 5000 pages, for example, when I type "Vitamin d + Bone...

22 October 2023 7,174 1 View

How many plant leafs should I measure with SPAD to get a good result?

Hi everyone, I am currently researching the effects of microplastic particles in soil on earthworms and plants. Part of the research is to measure the Chlorophyl content in the plant leafs. My...

28 April 2023 2,713 4 View

Does oxidative stress or other pollutant- or temperature caused stress lead to decreased levels of trace elements in fish?

Are there publications on this?

09 November 2022 4,666 5 View

Can anybody recommend a protocol for embedding CAFs in matrigel and subsequent analysis by FACS?

Our main issue is the high ratio of dead cells after the collagen gel digest.

11 October 2021 742 1 View

SEM or mixed effects model for my research question?

Hi everyone, I have a question about the difference between structural equation modeling and mixed effects models. What I'm trying to do is to use anatomical data (e.g. volume of a certain brain...

21 August 2021 2,836 3 View

Immunostaining of common bacteria in FFPE samples?

Dear Collegues, If we want to perform immunohistochemistry /immunofluorence staining from FFPE human biopsy (vein) samples and study the presence of LPS and or common pathogen like Porphyromonas...

01 December 2020 5,903 2 View

How to declare data to be choice model data (cmset command) in STATA 16?

Hello, I have a problem with writing a suitable code for the "cmset" command in STATA 16. We have a dataset from the discrete choice experiment (DCE) with 18 choice sets/cards. On each choice...

09 March 2020 8,353 7 View

Anyone with experience in control of a Shimadzu HPLC with MassLynx?

I want to control a Shimadzu LC-10 (Controller: SCL-10Avp, pumps: LC-10ADvp, autosampler: SIL-10ADvp) coupled to a Waters Quattro Premier XE with Masslynx 4.1. The LC is connected via a serial...

04 August 2019 7,467 4 View

How can I incentivise people from different countries and continents to take part in an online survey (duration approx. 5 minutes)?

As part of my PhD I would like to conduct an international online survey of authors of systematic reviews that will take approximately 5 minutes to complete. I wish to incentivise people to take...

21 January 2019 6,977 3 View

What is a fair price for scientific literature?

Recently, there is an increasing discussion concerning the price for scientific literature. At university, it is no problem to get adequate information for free but in non-university villages, it...

24 April 2018 9,614 5 View

Separation of organic acids-HPLC?

Hello What should be done to separate and identify organic acids in HPC when their RetTime is the same?Like oxalic acid with Propanoic Acid.or acids that have a very close RetTime.

07 August 2024 8,782 3 View

What procedure should I follow for current controlled PPy film electrochemical deposition on ITO?

For example, I perform passivation process before electropolymerization of Py for adhesion to titanium surface. Is a similar or different procedure required for ITO? If necessary, I would be glad...

06 August 2024 3,176 0 View

The aqueous fraction of the hydroethanolic extract is showing the presence of palmitic acid. What is the mechanism responsible ?

Palmitic acid presence in aqueous fraction

05 August 2024 8,624 4 View

Determining the worth of a point improvement in Hamilton Depression Scale?

Dear readers, Thanks for your attention. I am wondering about the health economic problem of quantifying the value of interventions which a) prevent, b) improve symptom profile and c) ultimately...

05 August 2024 3,246 1 View

If we are using snowball sampling technique, how do we justify the true representativeness of the sample statistically? is there any statistical test?

Are there any statistical methods to justify your sampling technique using SPSS or AMOS?

05 August 2024 9,153 4 View

Why might the impedance values for DI water and 0.1X PBS buffer solution exhibit a decreasing and increasing trend, respectively over time (HP 4194A)?

Hello everyone, I'm encountering an issue with my electrochemical impedance spectroscopy (EIS) measurements and would appreciate some insights. Experimental Setup: Electrodes: Gold interdigitated...

05 August 2024 3,783 2 View

What are possible strategies can be used to analyze data under sequential explanatory mixed method approach?

Better ways to analyze the qualitative and quantitative data in a sequential explanatory mixed method approaches

04 August 2024 2,703 6 View

How to convert g/kg Humic acid dose to kg/ha?

I used humic acid at 0.044 g/kg soil in my pot experiment. But finally, I have to recommend kg/ha. Each pot's soil weight was 11 kg. What is the solution?

02 August 2024 7,186 6 View

Why 3 replicates for most biological assays? Is it enough to examine the data fits normal distribution?

Just bounced on me. Before statistically analysing significant difference, shouldn't we see if data fits normal distribution first? Is 3 replicates enough to testify the hypothesis of normal...

31 July 2024 8,141 13 View

Conjugation of PEG-Amine to an Amino Acid Using EDC?

I am attempting to conjugate PEG to an amino acid at the C-terminus, for the purposes of producing nanoparticles. I have been told that PEG modified with amine groups can be used for this purpose,...

31 July 2024 2,033 1 View