Does different dilution factors affect negatively on NH3 reading ?

I have a sample of treated water sample & asked to obtain ammonia conc. in sample using a machine with 5-25 ppm detection range. However, upon testing with different dilution factors, all...

27 February 2021 8,483 3 View

What are the application of Fixed points thoery in Chemistry.?

It is said that fixed point theory has lot of applications not in the field of mathematics only but also in various areas. So I am looking for applications in Chemistry only..

26 February 2021 3,533 1 View

What is the molecular size for crystal violet and reactive orange 16?

I am using methyl violet 10B and reactive orange 16 (RO16) dyes for my Ph.D. research. I'm trying to find the molecular size for both of these dyes. It is possible for me to find these dyes'...

01 February 2021 3,333 4 View

How to find the target displacement to use in displacement control pushover analysis according to ASCE 41-17?

I am performing pushover analysis in Etabs of a steel braced frame but oI do not know what value should I use for target displacement. The height of the building is 20m. I want to know what value...

29 January 2021 2,190 2 View

Can we coat the pellet with graphite spray in place of silver paste for making electrical contact to measure the thermoelectric properties?

I want to coat the pellet because without electrical contact (may be due to the high resistance of the pellet), the V-I plot is not coming in the ZEM-3 instrument. I want to measure electrical...

24 January 2021 836 2 View

What is suitable etching resist coating for polished Titanium Grade 5 surface?

Currently we start a chemical etching project. This project involved etching a polished titanium grade 5 surface part. We facing a problem where by our etch resist coating peel off during etching...

15 January 2021 1,592 3 View

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13 January 2021 2,487 1 View

Variant or strain, what exactly happened to the corona virus ?

The new, more contagious variant of the virus that causes COVID-19 which initially detected in the U.K. and has now been spotted in many of the country. While some have referred to this as a new...

11 January 2021 8,810 5 View

How many times can we immunize mice before hybridoma preparation?

Dear all, Recently I have been working with monoclonal antibody production and I usually Immunize mice for a total of 4 times with the last one being diluted in PBS 3days before fusion...

09 January 2021 9,320 3 View

The hospitals reported rise in ICU admissions of young COVID patients - Is the new strain of COVID to be blamed?

05 January 2021 3,141 12 View

Can chitosan alone can act as a reducing agent for Cu(0) nanoparticle sythesis?

[Synthesizing Cu nanoparticles without using chemical reductants]

01 March 2021 8,359 1 View

Peptide precipitation as pre-step for acid hydrolysis for amino acid analysis?

I'm currently experiencing problems during acid hydrolysis for total amino acid analysis as my first samples contain high amounts of sugar (I get too low results back). I therefore had the idea to...

14 February 2021 6,049 3 View

Reaction condition to convert NH2 to COOH?

I need to couple Dopamine by NH2 end to silica nanoparticles coated by PEG-NH2, but first i need to convert the PEG-NH2 to COOH by using succinic anhydrous ... can you suggest a reaction condition ?

13 February 2021 2,768 4 View

About loading of Doxorobicin on MOF (drug delivery)?

Dear Researcher Respectfully, I am working on drug delivery. I synthesized Zn-MOF. I am going to load Doxorobicin on it and the study the derivery behaviour. I tried several times to load. but I...

07 February 2021 748 2 View

Suggestions for using antisense oligonucleotide for brain delivery?

hello I am working on a project that includes gene delivery to the brain. my intentions are encapsulating a gene in a Chitosan NP and IV administration the NP to rats. beside plasmids is there...

29 January 2021 4,455 5 View

How to find degree of deacetylation of chitosan colorimetrically?

I am working with low DD% chitosan. It doesn't dissolve completely in acidic solutions. How to calculate the degree of deacetylation by potentiometric and acid-base titration, UV spectroscopic...

27 January 2021 8,532 2 View

How to design an Ultrafiltration membrane for a CSTR?

Dear all, I am designing an Ultrafiltration (UF) membrane coupled with a CSTR. It is desired to utilized a dead end stirred reactor. The main purpose is to separate the enzyme used from the final...

27 January 2021 7,924 1 View

How to calculate theoretical drug loading for polymer nanoparticle and calculated nanoparticle ?

nanoparticles coated with chitosan as well uncoated nanoparticle

26 January 2021 9,053 6 View

How to improve the yield for the reaction below?

I am trying to increase the yield for the reaction below. I did the column and I saw that the major side-product is the symmetric dimer formed by 4-bromobenzyl bromide. I imagine that NaH is...

20 January 2021 7,874 4 View

Methanol usage in determination of vitamin B2 in foods using HPLC?

After acid hydrolysis and incubation in the dark using Taka-diastase enzyme, 30% sulphuric acid was added to stop the enzymatic reaction. The solution was diluted to the mark and some of the...

16 January 2021 3,740 4 View