Does anyone know how to prepare the bromophenol blue solution to determine the Quaternary Ammonium Compound?

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Any bacteriolytic antibiotic for gram negative bacteria?

I need a bacteriolytic antibiotic for destroy only extracelullar gram negative bacteria Any suggestions?

16 May 2024 7,585 5 View

How can you measure the strike and dip of an oriented block in the vicinity of a strongly magnetic intrusion?

Hello, I need to get oriented blocks of the country rock surrounding strongly magnetic dikes. Because of that, the compass needle gets strongly deflected when approaching the intrusion. What's the...

03 May 2023 1,108 2 View

Evidence on Friedman's rank robustness on small groups?

Hello! I'm running a Friedman two-way analysis because my sample is not normally distributed. I've performed the analyses on different groups, paired on two periods. One of them, although having a...

25 May 2021 3,558 5 View

How observe stem cells in Scanning Electron Microscope without using scaffolds?

Hello, I have stem cells in culture in a plastic flask and I want to observe it in a Scanning Electron Microscope (SEM), i want to know if there is a special preparation to the culture whitout...

14 April 2019 8,697 2 View

What is the difference between the adsorption enthalpy change calculated from Clausius-Clapeyron and from van't Hoff?

I believe that Clausius-Clapeyron can only be used for gas adsorbates and it helps you study the surface heterogeneity. Alternatively, I have seen dH calculated with the van't Hoff equation for...

06 March 2019 9,139 7 View

What are the possible applications in architectural sustainability and building design for living materials and synthetic biology?

Research into biological synthetic materials is pushing forward the notion of architectural sustainability and design. I am trying to determine what are the possible applications of these type of...

17 March 2014 6,501 2 View

What times and concentration of trypsin do they use for the culture of human macrophages?

Using 1x trypsin for 5 minutes did not work. Then we incubated for 20 minutes but still few cells detached.

01 January 1970 1,274 3 View

What does an additional peak in FTIR between 3100 and 3300 nm affect the quality of the material, benzethonium chloride USP??

I do not know much about FTIR! The material Benzethonium Chloride USP was compared to a reference standard in regards to FTIR, as per the USP testing: Identification B. Infrared absorption (FTIR),...

16 July 2024 6,918 7 View

Asked a separate ways?

Dear all, I have a question regarding ways to separate ammonium nitrate and phosphorus pentoxide？

12 July 2024 3,164 2 View

Does the potentiostat have to be in a fume hood when polymerising the PANI?

I will polymerise Aniline on ITO glass WE, using 1M of H2SO4 and a potentiostat. However, I am not sure if I have to do the electrochemical polymerisation inside a hood. Is it necessary? Is the...

10 July 2024 2,937 3 View

65% saturation of ammonium sulfate in 100 ml? (for protein precipitation)?

Hi All: I need to precipitate extracellular protein from supernatant. A bit confused with ammonium sulfate calculation. Should I be adding: 1. 65g of ammonium sulfate in 100 ml of...

09 July 2024 5,508 0 View

I want to ask why the poly aniline film does not stick to the ITO type substrate knowing that I used the electrodeposition method?

In order to make a polyaniline film, I used the electrodeposition method and set all the conditions, but I noticed that the polymerization process is happening, but it doesn't stick to the...

09 July 2024 2,708 2 View

How to catch or detect Herbivore‐induced plant volatiles from a plant?

I want to know about herbivore-induced plant volatiles from a plant attacked by pests. Is there any chance for me to know what kinds of compounds the plant produces and emits in real time? Thank...

27 June 2024 5,162 5 View

Ow can I remove the fat from mustard seeds in order to extract the bioactive compounds from the de-oiling residue?

I need to eliminate the fat fraction in order to obtain a better product in the next stage of bioactive extraction. By processing the mustard seeds as they are, I obtain a sub-optimal result in...

05 June 2024 3,484 3 View

How exactly do we prepare mobile phases used for LC/MS?

I am doing research that requires using LC/MS to analyse my data. I have very little knowledge of chemistry and LCMS. I have read through many posts and articles, but there is not a single place...

03 June 2024 3,963 5 View

Can methyl cellulose be used as a binder in the preparation of zeolite pellets?

I am currently preparing zeolite pellets for adsorption applications, specifically for removing phosphate and ammonium from aqueous solutions. So, I need to know about the binder used during this.

27 May 2024 5,802 0 View

Polyethyleneimine reacting with Cerium Ammonium Nitrate?

I am currently working on a drug-loading process that should be examined by UV detection. One of the processes I have to apply to detect the therapeutic agent concentration is utilizing Cerium...

25 May 2024 9,896 0 View