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

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

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 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

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

Logistical regression using SPSS for a dichotomous dependent variable, with an independent variable of 1, 2, 5 and 10 seconds?

I have an experiment with 28 participants The independent variable is the times 1, 2, 5, and 10 used as the cross hairs during a task These 4 times were tested using 4 different blocks, each...

03 March 2021 9,692 2 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

What techniques can I use to determine the miscibility of polymer blends?

The term miscibility refers to the single-phase state in thermodynamics. I do not mean the compatibility of different components. To determine the miscibility I know several techniques such as...

03 March 2021 4,107 4 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View