How to modify Al2O3 surface to make it hydrophobic?

Dear Scientists, I am going to disperse Al2O3 with synthetic oil (hydrophobic). Therefore how to modify Al2O3's surface to it stable in the lubricant? thank you very much. Best regards, Agus.

25 August 2020 4,485 3 View

How to determine atom% from weight% as shown in Maud Crystallographic Software ?

My understanding is atom% can be obtained from weight% by dividing all latter values by the appropriate atomic weights and normalizing their sum to unity. However, I am having a difficulty in...

17 June 2020 5,309 5 View

How to preserve shrimp hemolymph?

Can anyone suggest how to preserve shrimp hemolymph sample during transport to laboratory from a remote shrimp farm? How to prevent hemolymph to clot between individual extractions in a pooled...

01 February 2018 5,287 1 View

Why DNA plasmid have to dry after wash by ethanol??

09 September 2017 7,373 4 View

Nitrification vs mineral concentration

Is nitrification directly affected by major minerals (Ca, Mg, K, Na) concentration in water? Does the nitrifying bacteria need these minerals significantly?

09 August 2017 2,095 3 View

Why should I use a reversed column for better peak in HPLC?

27 March 2015 8,813 3 View

How can I determine the stability of biosurfactant based on the emulsion activity test?

I have done a test of emulsion activity (and surface tension) to characterize the biosurfactant produced by bacteria. The emulsion activity reduced after 24 hours, but no more than 10%. How can I...

08 August 2014 9,155 9 View

Co-Immunoprecipitation problem - Can anyone lend their expertise?

I want to purify a protein complex with co-IP kit (Thermo-Pierce, resin column), but, at the end, I could neither elute enough specific protein nor visualise by WB using antibody against...

03 August 2014 6,377 6 View

Determination of Ginkgolide A and B using HPLC

Can anyone suggest a suitable solvent system in HPLC (using column of Licrhospher 100 RP-18 5um, Merck, Darmstadt, Germany) to determine Ginkgolide A and B ?

28 November 2012 4,169 18 View

Can you explain how to develop a good questionnaire?

A questionnaire is an instrument usually used in survey research. How to make a good questionnaire so that it can provide us the best results (valid, reliable) to our study?

12 September 2012 3,699 1 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

How climate change will influences human and animal behavioral change?

The role of climate change influencing the human behavior as well as economics interest

01 June 2021 0 0 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View