Biosurfactants characterization

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In kalman filter, it is logical to have the observation variance equale 0 ?

I am working on implementing a Kalman filter integrated with ARMA parameters, as described in the article "Predicting Time Series Using an Automatic New Algorithm of the Kalman Filter"...

12 July 2024 8,116 2 View

How to calculate the activation energy for grain and grain boundaries?

how to calculate the activation energy for grain and grain boundaries?

18 May 2024 5,413 0 View

On average, how many rounds of revision does a manuscript undergo before being accepted in an SSCI journal?

This research question seeks to determine the average number of revision rounds a manuscript typically undergoes before being accepted by an SSCI journal. Understanding this average can help...

18 May 2024 5,815 6 View

How to handling asymmetric data sets when one group has significantly more responses than the other?

(1) How to analyze relation between two variables in which data is obtained on the ordinal scale from two different groups and the data sets are asymmetric, where one group has significantly more...

15 May 2024 4,950 5 View

Monitoring of microalgae growth with OD?

Hi, Could anyone tell me how to do to calculate optical density at 680 nm of microalgae culture when the suspension is diluted several times? Exemple: OD at 680 for a strain, in day 4 was 1.564...

20 March 2024 1,043 0 View

What are the limitations of Dynamic Bayesian Network (DBN)?

Hello everyone I am looking for the limitations on applying dynamic Bayesian networks (DBN); please provide scientific papers in this context.

19 February 2024 6,009 0 View

Where I can find SAFE Acculturative stress scale? or email of author to ask them for permission?

scale pdf, scoring, author's email to ask for permission.

13 January 2024 9,297 0 View

I need permission to use Quality of life scale in my research but the email given in scale is incorrect when I mail. How I can get permission for it?

Quality of Life scale

12 January 2024 1,463 0 View

Hello dear scholars, Please someone tell me some online tools to do molecular dynamics simulation?

Need for online tools to perform molecular dynamics simulation

03 December 2023 5,170 1 View

What is the mathematical Relation between dBm and V/m? are they related or interchangeable?

I have measured the electric field radiations of coaxial connectors for a particular point using electric field probe, the signal analyzer show radiated signal results in dBm. I have also...

27 November 2023 7,074 1 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

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

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

Is it possible to use a safer acid instead of monochloroacetic acid to convert bacterial cellulose to carboxymethyl cellulose?

Hi, researchers, Is it possible to use a safer acid instead of monochloroacetic acid to convert bacterial cellulose to carboxymethyl cellulose?

29 July 2024 4,570 0 View

Culture fibroblasts with or without FGF2?

I'm new to primary human fibroblast culture and I'm studying aging using cells from old and young donors. Some research groups have used media supplemented with FGF2, so I cultured cells in the...

29 July 2024 3,030 2 View

My cfDNA extraction protocol using silica beads works with plasma collected in COD SAGM bags but not with plasma collected in K2 EDTA tubes. Why so?

I am currently performing cell-free DNA (cfDNA) extraction from plasma using an in-house developed kit that employs silica-coated magnetic beads. My protocol works effectively with plasma obtained...

28 July 2024 3,559 0 View

What is the Principle of Cysteine-carbazole-sulfuric acid reaction with glucose?

I have been looking for the principle of Cysteine-carbazole-sulfuric acid reaction in research papers and books, but couldn't find it. This reaction is mainly used for the quantification of...

23 July 2024 3,891 0 View

What does negative readings in spectrophotometer denote. Was testing TSS content of bacterial cultures?

I was performing estimation of Total Soluble Sugar content in bacterial cultures by Anthrone method. Out of 9 samples, only one sample showed positive reading while others had a negative reading...

22 July 2024 9,576 4 View

Can sulfuric acid be used to prepare anthrone reagent when it has oxidized and changed color in reaction to light?

Sulfuric acid has changed color to yellow.

16 July 2024 6,964 0 View

Qiagen circulating nucleic acid kit poor yield?

Hi, Attempted to extract cfDNA from a 4 mL plasma sample, with poor yield. Went through the manual in the section regarding poor yield, and feel that this does not apply. Some potential...

14 July 2024 7,475 1 View