Andrew Mtewa

11 Questions 100 Answers 0 Followers

Questions related from Andrew Mtewa

How can I prepare a preparative TLC plate (PTLC) using silica gel? or where can I buy already prepared PTLC plates?

Dear Colleagues, Please help. How can I prepare a preparative TLC plate (PTLC) using silica gel? or where can I buy already prepared PTLC plates (Close to Malawi)?

06 September 2018 8,278 3 View

Does a burette work as good as a column chromatography in fractionation?

Dear Colleagues, In the absence of a standard CC of any size, can improvising using a burette for fractionation (Not purification) give comparable results as when one uses a standard manufactured...

06 August 2018 8,331 5 View

Have you ever wished you were a citizen of another country other than your current one?

Dear colleagues, Have you ever wished you were a citizen of another country other than your current one? Please share your opinions. Kind regards

09 June 2018 6,776 14 View

Please share your experience on the duration of air drying fresh leaf samples (~13% moisture) at room temperature?

Please share your experience on the duration of air drying fresh leaf samples (~13% moisture) at room temperature? - Please share if you had different leaf and environemental conditions of air...

05 June 2018 2,189 3 View

Is it necessary for army leadership to keep undergoing academic training while serving?

Is it necessary for army leadership to keep undergoing academic training while serving? - Considering that these guys have attained military leadership with current academic training plus perhaps...

05 June 2018 6,225 12 View

How can communities help in ending hybrid warfare?

How can communities help in ending hybrid warfare? Can community 'ethics check' committees work? Do communities have this power at all?

15 April 2018 1,296 0 View

Is it ethical to administer a dose of a pharmaceutical product that is a week to its indicative expiry date?

Esteemed researchers and colleagues in the field, I visited a clinic years back where the pharmacist administered an eye ointment for my little todler son. The drug was four days towards expiry...

13 April 2018 3,511 8 View

Considering the beliefs herbal practitioners attach to their formulations, can aqueous herbal formula expire?

Some of the local herbal pratictioners in my area keep and administer herbal doses stored for upto a month or more. A research I did showed multiplication of enterobacteriaceae to the order of...

13 April 2018 3,844 26 View

What is a recommende shelf life of a freshly laboratory prepared reagent or stock solution?

Stock solutions and reagents prepared in the lab expire (Moves away from their perfection) after some time. Most SOPs recommend " the preparation of fresh ones everyday". Please if you have an...

04 April 2018 9,747 7 View

Has sonification ever been explored to rapture cancerous cells?

Sonfication is used to penetrate plant cells during extraction. Just thinking, could it be the next generation clean cancer treatment?

04 April 2018 3,562 5 View

Can anticancer drugs be effective against wounds? and can anti-inflamatory drugs be effective against early stage cancers?

The relationship between cancers and inflamation is so great. Can these two, atleast at early stages, share drug?

27 March 2018 6,413 2 View