Any tips and tricks to prevent bubbles from being trapped in polymer film during membrane formation via immersion precipitation?

06 July 2017 6,408 7 View

Why does the level of phenobarbital spiked in blood appear to be lower than the actual spiked amount when being screened by ELISA?

5ppb of phenobarbital have been spiked into blank blood. This have been replicated by 10 times. However, ELISA results show that all 10 of the replicates contains LESS than 5ppb (average of...

06 July 2013 1,506 1 View

Is it possible for the number of theoretical plates (N) of a fractional distillation column (length 13.3cm) to be less than 1 plate?

In an experiment, we are required to fractionally distill a 1:1 mixture of acetone and ethanol. The first 5mL of the distillate is collected for GC. From the GC data obtained which shows the area...

02 March 2013 6,038 2 View

Will the formation of semicarbazone from an unknown (suspected to be a ketone) be long, or has it been falsely analysed?

In an undergraduate organic experiment, we are required to identify the functional group present via solubility tests (with H2O, HCl, NaOH and NaHCO3) and Classification Tests (Brady's, Tollen's,...

02 March 2013 9,496 7 View

How did you know that you're suitable to do research in a particular field of Chemistry (organic, inorganic, analytical etc)?

I am a second year chemistry undergraduate and I am currently having problems choosing for the field of Chemistry (organic, inorganic, physical, analytical or industrial chemistry) that I would...

01 February 2013 9,302 15 View

Can bis(triphenylphosphine)copper(I) borohydride, (Ph3P)2CuBH4 be synthesized with copper(II) sulphate pentahydrate, CuSO4.5H2O?

Synthesis of Bis(triphenylphosphine)copper(I) borohydride, (Ph3P)2CuBH4

11 December 2012 7,149 16 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Chlorinated organic formation in odor control scrubbers using hypochlorite?

I'm involved in a study of odor control technologies for municipal wastewater treatment plant. One of the control options involves a chemical 2-stage (acid/alkaline) packed bed scrubber. The...

03 March 2021 3,661 2 View

Ester cleavage conditions?

Hi all, I need to cleave the ester in Ethyl 2-amino-1H-imidazole-5-carboxylate to make the carboxylic acid and retrieve the product from solution to use in downstream applications of linking to...

01 March 2021 8,766 3 View

How can we theoretically calculate Elemental analysis(percentage) of atoms in covalent organic framework?

For example in one research article the Elemental analysis values of COF-TpPa-1 ( Triformylphloroglucinol (Tp) (63 mg, 0.3 mmol), Paraphenylenediamine (Pa-1) (48 mg, 0.45 mmol) are as follows...

24 February 2021 1,265 6 View

How to Control Whiteflies in coconut leaves?

24 February 2021 1,005 1 View

Alternative to mediation analysis?

I am currently working on my dissertation and want to explore the role of competence as a mediator between the effect of colour of clothes on voting intention (focus on Western countries)....

21 February 2021 8,609 1 View

What is the best etching method for Mg-Ca alloy?

I have used Picral etchant (4.2 g Picric acid, 10 mL Acetic acid, 70 mL Ethanol, 10 mL distilled water) but it didn't work. Is there any alternative?

21 February 2021 2,558 5 View

Color of spiro-ometad film?

What does the color of a spiro-ometad film indicate? I got purple, green, red, even black color of the spiro film. Is there anything we can get from the preliminary color analysis(e.g. oxidation...

21 February 2021 1,831 4 View

What reaction will occur when adding hexamine into ammonium nitrate in an acidic medium?

Hello, I am investigating properties of water in oil emulsion explosives. And adding hexamine (hexamethylenetetramine) into one of the phases that are used to make the emulsion should increase the...

21 February 2021 8,680 1 View

How to visualise pathways from a phosphoproteomics dataset?

I am looking for something similar than Ingenuity Pathway Analysis (IPA) in which I can enter the proteins differentially phosphorylated and I can visualise the pathways these proteins are...

21 February 2021 8,923 4 View