How do you interpret the results of neutral pH when the salinity is so high, And what makes it this way?

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Construire un diagramme d’activité pour modéliser le processus de commande d’un produit?

Construire un diagramme d’activité pour modéliser le processus de commande d’un produit. Le processus concerne les acteurs suivants: - Client: qui commande un produit et qui paie la facture -...

08 May 2024 7,354 1 View

Install Latex-OCR?

Hi, everyone I aim to install pix2tex along with Latex-OCD. While the former installs smoothly, I encounter a significant issue with the latter. I'm using Ubuntu 24.04. Is there a method available...

01 May 2024 3,780 6 View

How to make a protein soluble?

My expressed protein is being collected in the pellet fraction and I have used different strategies for making it soluble but still its coming in the pellet. I have used strategies like...

19 February 2024 5,552 0 View

About publishing a book in arabic language written with latex?

سلام، أريد ارسال كتابي في ميكانيك الكم لنشره في احدى ور النشر باللغة العربية و التي تستعمل Latex شكرا Hi everybody, Salam I want to send my book in quantum mechanics for publishing in one of the...

24 May 2023 4,894 4 View

How to cryopreserve Clostridium difficile?

I recently isolated and identified a Clostridium difficile strain and I want to preserve it for a long duration for further use. I want to know if there is a proper way to do it without losing the...

17 April 2023 7,773 2 View

About Thikonov reguralization?

Hi everybody, I have a problem about applying Thikonov regularisation: Is there a program addressing this issue (Fortran or Mathematica) Regardswith Abdelmalek

27 February 2023 4,478 6 View

When is the right time to add an antibiotic to bacterial growth to genetically study the expression of genes involved in resistance ?

Is it the stationary phase, as it is reported that it is during this phase that bacteria confer high rates of resistance ?

23 November 2021 6,364 3 View

What I can do to prevent the decomposition of polyetylenimine (PEI) at high temperatures ~ 600 °C?

I am trying to activate HA with PEI at high temperatures but PEI will decompose at 180°C, it there any kind of reticulation method or ... to increase the thermal stability of PEI?

03 October 2021 7,355 3 View

What is the best solvent for the extraction of chemical compounds that have an insecticidal effect ?

26 November 2020 4,928 15 View

What is the relationship between the H^2 and L^2 spaces on the unit circle?

Dear esteemed colleagues, I would like to ask about the main characteristics of the Hardy space H^2(T) and the L^2(T) space given that T represents the unit circle (not the open unit disk)....

13 September 2018 5,894 7 View

How to assess the osmotic power of a substance?

Hello, I suspect that a molecule I am using is causing bacteria to experience osmotic shock. What chemical properties should I look for to compare this capability with those of other substances?...

06 August 2024 977 1 View

How to check pH of a high strength hydrogel?

We are working on biopolymeric hydrogels. Our system is highly viscous and sticky, and the gel formed are high in strength. We are unable to use pH electrode and pH strip. Please suggest an easy...

30 July 2024 942 2 View

EDTA buffer solution?

Hello everyone! How can i prepare EDTA buffer solution (pH 8.2) to determine GSH levels? Thank you in advance.

29 July 2024 4,374 1 View

Whether i can preserve leaves samples in 2.5% glutaraldehyde in 0.05 M phosphate buffer, pH 7 for coming several weeks for further LM study ?

I want to preserve the sample leaves for the LM study of the stomata and conidia analysis. Whether 2.5% glutaraldehyde in 0.05 M phosphate buffer with pH 7 can be applied for preservation.

29 July 2024 8,560 0 View

In passive sampling, can polymer-lipid partition coefficients be applied independent of environmental salinity?

For example, if low-density polyethylene (LDPE) is equilibrated with PCB contaminated marine and freshwater sediments, can LDPE-lipid partition coefficients be used to obtain equilibrium...

28 July 2024 263 1 View

How to convert water conductivity in mS/cm to Salinity and TDS?

In order to test different water parameters I need to know how to convert conductivity to Salinity and TDS in ppm or ppt. Give me the reference please.

27 July 2024 2,414 2 View

Could GSH level be more in CCL4 rats than negative control rats?

i compare between the antioxidant and oxidative stress level between negative control rats (saline) and CCL4 intoxicated rats. i found the level of GSH and TAC is more in toxic group than normal....

26 July 2024 1,887 0 View

How can I regenerate a SCX column modified with Sulfonate group (Thermo 054995)? The colmun has lost its Resolution and peak to valley ratio?

The column is used in Ion Exchange Chromatography of Monoclonal antibodies and the method of analysis is based on pH gradint.

13 July 2024 7,462 1 View

My Cyclic voltammetry curve doesn't show cathodic peak of Cu2+ to Cu+. how to solve this problem?

I performed CV of Cu-MOF in a buffer solution of pH 8, and we did not find any peak corresponding to Cu2+ to Cu+. What is the reason behind this? Please give your valuable suggestions.

08 July 2024 2,388 4 View

Is it possible to generate a (semi-)permanent "transcription bubble" within a replicable plasmid?

I was wondering if it is possible to form a permanent open "ssDNA bubble" similar to a transcription bubble (>13 nucleotides) within E. coli. These criteria are important: 1. Open ssDNA...

07 July 2024 8,275 5 View