Could you recommend any books about Number Theory?

Beginner level books. High level books. Analytical Number Theory. Algebraic Number Theory. Combinatorical Number Theory. Books about partitions. Books about primes.

03 March 2021 7,174 5 View

Why is the efficiency of viral mRNA electroporation in PBMC low?

Hello, I have been struggling with the electroporation of PBMC with HIV-I mRNA. Although the quality of the RNA generated is good, and the handling of the cells in meticulous, the frequency of...

27 February 2021 9,233 3 View

Have anyone checked before Cyclic voltammograms of intial ITO substrate and E-teck?

As a beginner in electrochemistry, I tried to obtain cyclic voltamograms of commercial anatase powder deposited on an ITO substrate or on Eteck. After several attempts, I noticed that my cyclic...

23 February 2021 3,175 3 View

The type of filter paper used to filter an epoxidized oil (the mixture is an epoxidized oil with magnesium sulfate) ?

I have a mixture of epoxidized oil and magnesium sulfate wich type of filtre paper should i use

21 February 2021 3,944 3 View

Any information about dinitrosalisylic acid reagent end point color stability ?

I work on estimation of alpha amylase activity using dinitrosalisylic acid reagent If i put the reagent to stope the enzymatic reaction and allow the reagent to react with the produced reducing...

17 February 2021 7,402 4 View

Is There are any idea to achieve H NMR signals for swollen compound ??

the samples are not completely soluble - just swelled the solvents that's mean the sample may be partially soluble any suggestion, please

16 February 2021 8,801 3 View

Is there association of SARS-CoV-2 infection rate with meteorological factors?

There are contradictory research papers about the correlation between meteorological parameters and incidence of COVID-19 in some countries worldwide. Is there correlation between the...

15 February 2021 5,806 2 View

Are there alternatives to the Devarda alloy when estimating nitrogen?

Are there alternatives to the Devarda alloy when estimating nitrogen? devarda alloy is reducing the nitrate to ammonium

15 February 2021 8,838 3 View

Can the viability assays (ex: MTT/CCK-8) measure cell proliferation? or are they solely viability assays?

I want to conduct a proliferation assay to test a chemotherapy combination on a cancer cell line. At first, I thought about the MTT assay. But now, all sources are saying that these do not measure...

14 February 2021 3,142 7 View

Using liquids as superstrate in Fabry-Perot Cavity Antenna?

Hi, A Fabry Perot Cavity allows to increase the directivity of a low gain antenna by putting in the top of cavity a superstrate with high permittivity such as a ceramic (er=10.2). However,...

09 February 2021 6,799 8 View

Binary Logistic Generalized Linear Mixed model in SPSS. Is it doable?

I want to analyses the proportion of swimming sperm of three species of fish in two salinities. To analyse the proportion of swimming sperm in a Generalized Linear Model, I would use a Binary...

03 March 2021 2,297 3 View

What could be possible reason of higher Drug Concentration of Liposomal formulation stability samples over time?

Hello Everyone! I have prepared liposomal formulation using Rotary Evaporator method followed by dialyzed the liposomal Suspension in Phosphate buffer to remove the un-encapsulated drug. After...

25 January 2021 7,752 4 View

Why doesn't semen analysis usually use darkfield microscopy?

From examples I've seen online, brightfield has too-low contrast and phase contrast has large (diffraction?) halos that can look like noise.

15 January 2021 3,155 1 View

Is there a way to prevent agglomeration of chitosan when i add a chitosan solution dropwise to a bilosomes suspension for the purpose of coating?

I am doing research on the incorporation of bile salts into liposomes and coating the exterior surface with chitosan for enhanced stability in the GIT. Eveything goes well up until the point where...

14 December 2020 4,894 3 View

What basic protocol can you recommend for making liposomes with a highly water insoluble drug?

I am new to liposome making. My drug (carbamazepine, mol wt. 236) is highly insoluble in the water. I tried to load it in bilayer using a basic protocol. After lipids(DMPC, DMPG, Cholesterol)...

23 November 2020 4,886 3 View

Did anyone used microflow imaging to measure the size distribution of Multivesicular liposome which are charcterized with size (>3um)??

I have prepared Multivesicular liposomes using the following procedures: Multivesicular liposome formulations for the sustained deliv... Multivesicular liposome (MVL) sustained delivery of a...

18 November 2020 3,189 2 View

How to dye DOPC liposome with Dio c18 fluorescent dye?

13 November 2020 9,244 3 View

What pH buffer solution best replicates physiological conditions?

I am studying the interaction between protein (HSA) and liposomes (made with DMPC) and I would like to study under physiological pH for application in studying protein interaction with DDS. I have...

10 November 2020 3,594 3 View

Hello, How long can rat sperm survive in saline solution after leaving from the testis after sacrification?

How should I measure motility, what is the process? Should I put it in the incubator (37 C) immediately after sacrification? Thank you from now.

28 October 2020 280 4 View

I warp BL21 cell extract into a POPC liposome, why does it bust in a very short time?

I am trying wrapping Ecoli BL21 cell extract into POPC liposomes but they burst in a very short time. However, when I wrap LB in the liposomes, they remain stable for a long time.(Liposomes are in...

21 October 2020 3,206 3 View