Decrease in FT-IR intensity (absorbance) of polymer reinforced with MMT/CNT concentration?

Dear All, Please what could have caused the peak intensity of polymer reinforced with pristine CNT and modified MMT (CNT/MMT hybrid) to be reducing with increase in the nanohybrid filler...

30 January 2020 6,752 6 View

Measuring the electrical conductivity of Polymer/CNT nanocomposite?

How can I determine electrical resistivity or conductivity of polymer nanocomposite? Several attempts using current or voltage generator has proved abortive as all samples reading same value with...

24 January 2020 9,464 3 View

How to calculate the sample size for a microbiota study?

I intend to work on the microbiota of human breastmilk comparing two different collection methods. How do i calculate the sample size?

15 August 2018 3,439 3 View

Quasi Maximum Likelihood

Could someone help me to explain parameter estimation method of quasi maximum likelihood for univariate GARCH model ? If you have a reference about it, please give me the link/ pdf about it. Maybe...

11 August 2017 6,608 1 View

Must 'theta' be normally distributed in constructing a L-sigma control limits of a control chart? Say UCL = E(theta) + L*SD(theta). Any reference(s)?

Probability limits can be used if theta follows say a gamma or beta distribution, but I am not sure of using probability limit approach for some charts like EWMA or CUSUM. I would like to know if...

31 January 2017 5,182 4 View

Can anyone suggest a software for performing groSequencing? .....also I will like to know how it can be done using R?

01 October 2015 1,952 3 View

When it comes the assessing the social impact of major railroad construction, what is the importance of and the limitations on society?

Social Impact Assessment is an aspect of EIA that should be looked into thoroughly when dealing with the social aspect of the environment - not least in that it has an impact on the economy.

16 March 2014 7,372 4 View

hematopoeietic stem cells

Hi to all, Anyone here has experience with hematopietic cell line expansion? I am about to buy one, but I do not know which is good..does any one has recommendation? Past few months, i...

21 November 2009 9,619 1 View

Why can't make aluminum nitride film successfully by use sputter?

We use reactive sputtering process to make aluminum nitride film, and want to make c-axis aluminum nitride film on a silicon substrate, but the crystal orientation cannot be seen with...

03 March 2021 7,975 3 View

How to constrain genetic algorithm input u?

My real system (buck converter) can only take an input of 0 to 1 (duty ratio) and I need to constrain the system so the controller action keeps within this bounds. How can I do this? The code for...

22 February 2021 2,125 3 View

Why are the modelled and circuit system different in response for controlled buck converter?

[Images are attached at bottom] I am currently working on a buck converter controlled by two different control methods, Reinforcement learning applied to find PID values & a lead-lag...

16 February 2021 5,060 10 View

Can I get the design of circular cylinder to fix thermocouple on the surface and cartridge heater in core ?

Respected Scientific Community. I'm interested to carry out experimental studies on a circular cylinder. But even after doing literature review I unable to get the exact design of the cylinder...

10 February 2021 6,221 1 View

How do I connect DAB DC DC Converter to a battery in matlab simulation ?

I am trying to model a DAB converter and I need to observe the power transfeered to the load side on varying the phase shift between two bridges, hence I couldnt take a constant load e.g...

09 February 2021 6,489 3 View

Wind speed Forecasting: Training set size?

I have one year of wind speed data, collected at hourly intervals. I am trying to train a forecasting model using this data. I want to be able to generate rolling forecasts up to 7 days in the...

23 January 2021 3,313 5 View

Is there a generalized method to derive current-mode model of any DC-DC converters?

Hi all, As new DC-DC converters are being proposed, associated control method should be proposed and based on the small-model signal analysis of the DC-DC converters. Using average space state...

06 January 2021 7,247 3 View

I need a Wind Power Dataset having wind turbine's output power values and corresponding weather data information: wind speed, pressure, temperature?

The dataset is needed for forecasting wind power output using the weather information. I will be much obliged if anyone can share a relevant dataset or link.

04 January 2021 6,344 2 View

Does anyone have an insight into the behavioural response of fishes to moving wind turbine blades as seen through the air-water interface?

I am interested to find out if wind turbines located close to rivers or lakes, or perhaps even in marine locations, are a potential problem for fish. This seems to be a very under-researched area...

04 January 2021 3,468 2 View

Why am i getting a negative torque in ansys fluent for a vertical axis wind turbine?

I am trying to simulate a vertical axis wind turbine of darrieus model and i am getting a negative torque. I have followed frame motion, relative to adjacent cell method, and solution method as...

28 December 2020 1,170 3 View