a a a a a a a a a a a a a?

More Mustapha Ouhsaine's questions See All

How can I adapt cyclic server model in hospital operations?

To help enchancing patients flow and service efficiency

18 July 2024 482 2 View

Are the messages transmitted in classical channel between participants in quantum cryptographic protocols free from being blocked or delayed ?

In quantum cryptographic protocols, participants typically share both a quantum channel and a classical authenticated channel. Authenticated channels ensure that messages come from legitimate...

22 June 2024 7,074 3 View

What Would You Do, Wall Street Journal wsj.com?

for systemic risk of wjs.com experience best experienced alongside other explorer spirit independently in creativity.

03 May 2024 6,821 1 View

What is a constant touchstone or supercomputer sims for Elizabeth Holmes?

Constant touchstones following the protocol introduces a new dimension of bioethics to the bioinformatics about big ideas, modes of inquiry, intellectual traits and habits of mins but it is...

24 April 2024 8,739 3 View

Why am I getting low isotopic enrichment in my expressed protein even though I am using labeled media?

I am expressing a membrane protein (about 15 kDa) in BL21(DE3) cells. The expression is good, and the yield is decent, but each time I checked the mass with a TOF mass spec, the mass I get is...

11 April 2024 7,169 3 View

How to elucidate molecular structure of unkwon? I have done FTIR, HNMR, CNMR & DEPTH 135. ?

Dear respected seniors, I'm a young ambitious researcher looking for guidance on how to elucidate molecular structure. I have done FTIR, HNMR, CNMR & DEPTH 135 analysis. The expected structure is...

28 January 2024 9,679 1 View

How can we divide the word unauthorize into root and affixes? Is it un + auhor + ize or un + authorize?

this is what they say on etymoline.com: "late 14c., auctorisen, autorisen, "give formal approval or sanction to," also "confirm as authentic or true; regard (a book) as correct or trustworthy,"...

09 December 2023 7,533 6 View

Would you help me in dealing with rietveld raffinement for XRD pattern ?

Raffinement for XRD pattern of Kaolin, Metakaolin and Geopolymer cement for quantification of cristalline and amorphous phases

22 November 2023 6,763 1 View

What is the appropriate research design for investigating the effect of class size, teacher availability and teacher qualification on performance?

Shall I use quasi experimental design or expost factor research design?

11 September 2023 4,598 8 View

Morganization. Morganization. Morganization.?

Morganization is practice in private equity investing. Morganization is the house of morgan or super economy. Morganization is California high speed rail beyond the divine right.

29 August 2023 5,744 3 View

I need to dissolve stigmasterol for an animal experiment, it hasn't dissolved in either DMSO or vegetable oil. Can anyone recommend the best solvent?

Hello everyone, I need to dissolve stigmasterol for an animal experiment, but it hasn't dissolved in either DMSO or vegetable oil. Can anyone recommend the best solvent for stigmasterol?

01 August 2024 7,504 2 View

How to treat monolayer culture cell line with essential oil?

Hi all, may I ask you for advice about treating monolayer culture cell line with essential oil. Due to the hydrophobic character of the oil, I am concerning how can it equally affect to all the...

31 July 2024 5,301 2 View

Liposome Preparation using Heating Method - Why does my liposome suspension form aggregates?

Hello everyone, I am trying to encapsulate an essential oil in the liposomes using the heating method and encountering some issues. I am following the protocol described below, but my solution...

10 July 2024 4,083 3 View

How to dilute essential oil from plants to assess the biological activity?

I have extracted essential oil from a medicinal plant and want to make several concentrations for some biological activities (Antidiabetic assay). How can i prepare the several concentrations to...

04 July 2024 8,100 4 View

Alternative binders other than Nafion solution?

Hi Everyone, I plan to deposit a catalyst (TS-1@Co-PDA, in the core: TS-1 zeolite with a shell of Polydopamine designed with Cobalt) on a rotating ring-disk electrode (RRDE) to evaluate the...

29 June 2024 8,203 3 View

What are the causes for the non detection of Fatty acids peaks on a Rtxi 5MS column?

Dear scientific community, We used to performe many separations and detections on our GC MS (Perkin elmer Clarus 580-SQ8S), but recently we can not separate fatty acids( few ones appears in...

06 June 2024 6,844 0 View

What is the best buffer to resuspend proteins extracted from oil?

I hope everyone is well! I extracted proteins from sunflower and olive oils using acetone and then washing with n-hexane. I used RIPA buffer to resuspend because I plan to dot blot these samples....

02 June 2024 10,007 1 View

Assistance for hydrodistillation process?

I am a new researcher working on the extraction of essential oils from specific plants, starting with their leaves. However, I have encountered an issue with my Clevenger apparatus. Despite...

01 June 2024 2,445 7 View

How can I get an Annual Precipitation Data of a Province?

Hello forum members, I'm conducting research on vegetable oil fingerprinting. I need annual precipitation (rainfall) data for provinces in Thailand, Malaysia, and Indonesia. Specifically, I don't...

30 May 2024 6,209 2 View

How can preparation concentration ppm from Essential oils for plant?

We are studying about essential oil of some plant again of antimicrobial, we want use concentration by ppm, how can preparation this concentration and which solvent we are use. Thank you for any...

28 May 2024 2,085 3 View

Matthew Bernart

If it is lab scale I would look into a Clavenger apparatus for volatile oils.

Mustapha Ouhsaine

Thank you very much D. Matthew Bernart for your answer. I would carry out an assay at lab so I need some parameters for this experience.

Buniyamin Ayinde

Use Clavenger apparatus for 3-4 hours, you will get the oil. Use densitometer to obtain the density, usually this is less than 1 which explains why it is less than water. The colour is light yellow, however, this may vary.

Olga Lock

The same, you should use Clavenger apparatus to get the ginger oil.