HPLC baseline failure (ACN/Water)?

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Is it possible to plot the atom-projected band structure using GPAW?

Hi, I'm currently working on a project where I need to plot the atom-projected band structure using GPAW. I've been able to calculate the band structure for my material, but I'm having trouble...

07 August 2024 269 3 View

How to explain the different interaction between soluble and insoluble polymer in water?

Hello everyone, I am try to understand the differences interaction between insoluble and soluble polymers in water with metal ions and how theit charge density (of metal ions) affect the interaction.

29 July 2024 6,350 3 View

Are the coordinates the center of the cell or a corner in GADM / worldclim maps in R?

I am currently using a map downloaded from https://gadm.org/maps/DEU/bayern.html and I would like to assign the value of a variable to each cell with R. I was also trying to get this information...

15 July 2024 8,844 1 View

How to reduce the material coming out of the torque rheometer?

A physical mix was in vitro evaluated on a torque rheometer. The composition was predominantly recycled polypropylene (PP), yet the melt flow index (MFI) was found to be excessively high....

25 June 2024 10,154 0 View

Can anyone recommend bibliography on the analysis of rage from an affect studies' perspective?

I'm analysing a novel in which the said emotion is fundamental to understand the development of characters. Thank you in advance.

22 June 2024 4,859 8 View

Why are my nanoliposomes turning purple??

Hello, I am making lipid nanoparticles using the thin film hydration method. Formula is DODMA:DSPC:Cholesterol:DSG-PEG2000 at 60:20:17.5:2.5 %mM in 5mM total. After hydration in sodium acetate...

16 June 2024 6,842 6 View

Who is the use of Generative Artificial Intelligence in Qualitative Research?

One of the most intriguing frontiers in contemporary research is the application of Generative Artificial Intelligence (GenAI) in qualitative research. This technological advance offers tools that...

13 June 2024 781 2 View

¿Que enfoque metodológico me recomiendan para abordar los gremios tróficos en un área natural de BST?

Me interesa investigar la distribución espacial de los gremios tróficos de aves en un área natural específica de bosque seco tropical, analizando la abundancia relativa de cada gremio en las...

12 June 2024 9,313 1 View

What skills should today's teachers take into account to teach students and prepare them for a long-term future?

Taking into account that each society incorporates into the curricula the necessary knowledge to teach depending on the social demands of each country.

06 June 2024 9,710 14 View

Isssues making a thin film of lipids for nanoliposomes?

Hello, Im trying to make a nanoliposome to encapsulate plasmid DNA. I am using the standard thin film method followed by resuspension in sodium acetate 25mM pH4 with my DNA (Im using the...

05 June 2024 3,646 3 View

Which type of compound does lamda max of 218 indicate in a uv-vis spectrum of a partially purified compound through column and TLC?

A crude extract of fungal culture using EtOH was subjected to column and TLC and partially purified compound was obtained. UV vis spectrum of the compound/s has max absorbance at 218nm. The...

11 August 2024 9,801 2 View

Can you connect an HPLC to a Mass Spec only at a certain time point?

Can anyone explain this method? Especially the last statement where it says only at 1.5 to 2.5mins was the MS/MS connected to the UPLC. How is that possible, is it a feature in this specific...

11 August 2024 8,141 3 View

Baseline drift in HPLC? What causes this?

Hello, Why do i see this baseline drift when i compare my blank (black) to the sample (blue)? Any suggestions as to why this happened? Thank you!

11 August 2024 3,770 4 View

GC-MS retention index prediticon?

Hello experts, Does anyone know any free software about retention index prediction ?

08 August 2024 7,403 2 View

RNA Extraction Using Hot Borate Method No Longer Working?

I've been performing RNA extraction on cotton petiole tissue for a few months now using the method described in the following paper, a derivative of the typical hot borate method...

08 August 2024 9,882 2 View

Can I use a HisTRAP column for affinity chromatography?

I'm working on selecting antibodies against a recombinant protein that has a His-tag. My idea is to first bind the recombinant protein to a HisTRAP column and then use this column for an affinity...

07 August 2024 505 3 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

Why is electronic energy 0.000 for liquid crystal compounds and is invariable with temperature in Guassian 09 software?

Are there any suggestions or insights you can provide to help address this problem

06 August 2024 1,443 2 View

Hi, please what is the best tool on Aspen plus that can help me get the best inlet temperature and pressure for cryogenic distillation?

I am trying to recover liquid CO2 from a mixture of 0.6 CO2, 0.3 N2, and 0.1 O2. My aim is to recover about 99% liquid CO2 at the bottom of the column and make sure the amount of gaseous CO2...

06 August 2024 4,611 0 View

RNA later for the preservation of RNA in fecal samples at room temperature for one day (37°C)?

I am planning to collect human fecal samples for metatranscriptomic analysis using MGI. These samples are from indigenous people living in a region with high temperatures. I will have access to a...

06 August 2024 1,367 3 View