Is it possible to use 100% Ethanol as mobile phase for C18 or any reversed phase columns?

I want to separate 2 compounds on HPLC, and I have made the preliminary studies on TLC using reversed phase plates and 100% ethanol as mobile phase which achieved complete separation. Now I want...

13 August 2020 2,229 3 View

Is there any different in phage precipitation with PEG 8000 and PEG 6000 ???

Can the moleculer weight of PEG (8000 and 6000) cause a noticeable effect in phage precipitation???

22 December 2018 531 3 View

Is there a way to extract vanilla oil?

I tried distilling vanilla beans (hydrodistillation) but did not get any oil after 4 hours. However, the hydrosol had the same odor of vanilla. Is there a way to get the vanilla oil? Thank you!

07 October 2018 7,400 3 View

I need the Diabetes Quality of Life Questionnaire for my project, where can I find it?

The main objective of my project is to assess the psychosocial aspect of the diabetic patients especially type 1 (adolescent) . Do you have any suggestion on how can I assess this issue?

22 June 2018 1,167 3 View

Why sandalwood oil is prepared from the heartwood and not the sapwood?

Sandalwood oil is extracted from the heartwood. Is there a reason for or benefit from producing the oil in the heartwood?

13 February 2018 9,172 1 View

What are the factors required to be considered for wsn using on-demand query based apporach ??

20 April 2016 8,149 5 View

How can we make a hybrid dynamic system for fisher KKP equation?

discrete time piecewise smooth system continuous time piecewise system

15 November 2015 4,562 2 View

What is the best way to fractionate a methanolic extract?

Is fractionation by simply shaking with solvents of increasing polarity successively sufficient or is it needed to always have 2 immiscible solvents?

31 October 2013 8,863 32 View

Top Ten Learning Algorithm?

01 January 1970 4,217 33 View

Why it is required to have plasmid to have polymorphic immunity in a bacterial population?

Except CRISPR, what can the plasmid carry out as an immunity against phage??

01 January 1970 3,044 3 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

Do you know any MR image dataset?

I would like to research on MR images (0.5T and 3T). Can you please suggest some websites that I can download dataset including both 0.5T and 3T MR images? Thank you.

02 March 2021 7,735 3 View

What are anisotropic electrical and optical properties of a semiconductor due to?

In some materials, properties such as band gap, thermal conductivity differ along different crystallographic axes. What are the basics?

01 March 2021 1,923 3 View

1 nm thick MgO thin-film to be deposited on Si wafer using thermal evaporation. What will be the optimum deposition conditions?

Favourable conditions of base pressure, rate of deposition. Also, by which characterisation technique to be used to verify the thickness of the deposited film.

28 February 2021 3,640 3 View

Where can I find public datasets with Covid-19 patient information?

Hi, I'm looking for public datasets that have CT, X-ray information, or medical records for patients with Covid-19. Does anyone have suggestions?

28 February 2021 4,760 3 View

Why do a weight decrease for thermal degradation in nitrogen gas condition?

Hi all The question is related to TGA(Thermogravimetric analysis). Thermal degradation easily understood but why do samples weight decrease? altough just binding is broked, the weight of...

26 February 2021 1,100 5 View

Can thermal cycler machines be problematic during PCR?

Hi, my question is about the heating of thermal cycler machines and I hope some of you had experienced a similar thing previously. There are two thermal cycler machines in the lab(BioRad) and for...

26 February 2021 4,777 4 View

Is there any one who can provide a donation of HPV detection and genotyping kits in exchange collaboration fors?

Warm greetings My name is Ayichew S. and I am doing my Ph.D. in Medical Microbiology (on Human papillomavirus). At this stage, I have almost completed a clinical sample Cervical swabs)...

25 February 2021 1,660 3 View

Is there any one who can provide a donation of HPV detection and genotyping kits in exchange collaboration forms?

Warm greetings! My name is Ayichew S. and I am doing my Ph.D. in Medical Microbiology focusing on Human papillomavirus). At this stage, I have almost completed a clinical sample (Cervical swabs)...

25 February 2021 3,612 3 View