I have a problem with the quantification the glutamic acid in the food (tomatoes, .), I would like the chemical method with HPLC. Thank you very much.

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Please how to includes the M062X functional in the Gaussian 09 ?

How to includes the M062X functional in the Gaussian 09 ?

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Is there someone who has an expertise in simulation by aspen of the temperature swing adsorption (tsa) process?

We need to simulate TSA process for gas.

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Generated the wave function file (.wfn) using Gaussian 09W ?

Dear all, I would like to generate a wave function file (.wfn) using Gaussian 09W. I have added output=wfn in route section, and at the end of the molecular coordinate section i leaved blank...

17 February 2020 3,621 4 View

I would like to know if anyone has ever used Aspen Tech to simulate a wastewater treatment process ?

I know that the Aspen Tech is used in the field of oil and gas process. But is it possible to simulate a wastewater treatment process by using this software.

08 November 2019 9,266 7 View

Can anyone help with the preparation of 0.4 M glycine/NaOH buffer Solution, pH 10.4?

Can anyone help with the preparation of 0.4 M glycine/NaOH buffer Solution, pH 10.4? thank you

10 June 2018 7,823 1 View

How to select th best match of an image in a segmented image collection?

Hi, I have a set of segmented images and i want to select ,for each new image, the best match in this collection. witch algorithm can i use for such task? Thanks

03 September 2016 9,014 7 View

How can I measure the complexity of an image?

I have a group of images, how can i select simple images(with simple background) from this group based on image complexity analysis?

24 June 2016 4,434 8 View

What the state of the art of energy minimization algorithms ?

Hi, To segment simultaneously a set of images (cosegmentation problem), i need to minimize an energy function which contain three terms : data term, smoothness term (like MRF model) and a global...

20 January 2016 920 3 View

What does it mean the "flow between two images"?

The SIFT flow algorithm is a technique similar to optical flow witch compute correspondences between two images in image matching. Can you please tell me what the significance of flow vector is?

11 March 2015 7,554 5 View

What is the difference between SIFT and Dense SIFT ??

Particularly in the co-segmentation field what's the inpact on the quality of segmentation when working on multiscale images?

14 January 2015 4,792 5 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

GC-MS retention index prediticon?

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

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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

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Leaf area of tomato ?

Hi How can this equation Ln(LA) = 1.038 + 0.89 ln(X) be applied to calculate the leaf area of a tomato? Can you explain with an example and what is the substitution of Ln and ln?

06 August 2024 2,508 2 View

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

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06 August 2024 1,367 3 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

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How can we use mobile apps for improving students' academic performance?

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04 August 2024 9,492 0 View