Does all mineral oil contains asphaltenes?

I had a mineral oil of 460cSt (containing sulphur and phosphorus), after addition of nanparticles (carbon nano tubes and graphene) the viscosity decreased significantly. literatures says that the...

07 August 2018 9,447 1 View

What can be the reason for high coefficient of friction and low wear scar in a lubricant containing carbon friction modifier and zinc oxide?

A lubricant contains zinc oxide nano particles and carbon FMs, the coefficiet of friction is high while the wear scar diameter is less for the samples. The load was 392N @1200rpm @75degree C.

03 April 2018 3,084 6 View

Does the coefficient of friction values depend on the type of tribometers used?

Experiments were carried out using pin on disc apparatus (120N, 800rpm, a flat faced pin 10mm, room temperature) and four ball test(120N,800rpm , AISI 52100 balls , 75 degree C). The lubricant...

11 December 2017 3,529 2 View

What is the Youngs Modulus of Zinc Oxide Nanoparticles?

Elastic modulus of Zinc Oxide nano particles

07 August 2017 7,994 2 View

How to explain the phenomenon of extreme pressure properties in case of graphene and carbon nano tube?

Graphene and carbon nano tubes shows better extreme pressure characteristics when used as additives.

06 July 2016 8,544 0 View

Can anyone tell me some applications where we use gears of hardness 22Rc-30Rc?

Specific Application please.

06 July 2016 3,358 2 View

Which is more preferable mixed lubrication regime or boundary lubrication regime?

06 July 2016 9,847 7 View

How does Young's modulus,shear modulus,Poisson ratio of a nano wire/tube/particle influence the coefficient of friction?

Mechanical properties influencing coefficnet of friction.

05 June 2016 1,316 2 View

Does graphene exhibits better frictional properties than carbon nano tubes?

Graphene shows better frictional properties than carbon nano tubes.

05 June 2016 2,558 1 View

What is the effect of load on the lubricity of graphene?

05 June 2016 3,303 0 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

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

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

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

How to calculate average trend in maximum annual NDVI from MODIS?

I am wanting to calculate the average trend in maximum annual NDVI in Iceland from 2010-2020 using MODIS MYD13Q1 V6. How would I do this? I have currently inserted the NDVI bands from the MODIS...

02 March 2021 752 2 View