What are the basis for determining assessment factors during chemical risk analysis?

I have EC50 and LC50 values and wanted to calculate PEC for different species in water. I have currently considered acute risk with an assessment factor of 100 based on a previous similar...

12 July 2020 4,562 2 View

Is there Researchers who are already working on anti-viral surfaces. For ex. anti-viral COVID-19 surfaces ? ?

It would be interesting to know, how the scientific community is contributing to the COVID-19 crisis. How chemical/mechanical/material/metallurgy concepts are being used to produce anti-COVID-19...

16 May 2020 5,141 3 View

Storing tissue in Agarose for 24 hrs ?

Dear All, I want to perform tissue section on different kinds of tissues like brain, muscle tissue,etc. I would like to store my fresh tissue in agarose for 24 hrs/over night before sectioning...

16 February 2020 878 2 View

How to calculate ECC using HFSS software?

Good morning. Now i am designing MIMO antenna for Ultraband Applications. Can anyone suggest how to plot ECC (Envelope correlation Coefficient) Using HFSS 15 software. Thanks in advance

13 February 2020 5,261 6 View

How to differentiate T. elliptica, T. tomentosa, T. crenulata and T. alata? Different or synonymous?

Going through every literature and floral publication, they have their own theories, some say different species some consider synonymous to each other. There is a need of Key to Terminalia species...

08 September 2019 3,029 3 View

Data structure and missing values in random forest model?

Hi there, I have over 1 million records, with a categorical response variable and a mix of categorical and continuous predictors. There are several missing values in the dataset, this is...

02 September 2019 494 4 View

Tools/techniques to describe the distribution of cells in a raster, across a study region?

Im trying to analyze and extract patterns from several raster layers, something like what is done for non-raster features. Im interested in learning techniques that describe the distribution of...

02 July 2019 2,333 5 View

Can anyone suggest me how to plot fractional order time delay system in matlab?

I am searching a matlab code for fractional time delay system(continuous case). Still now, i don't got any idea for the above. I need a good suggestion from researcher. Help anyone!!!

06 March 2019 6,097 3 View

Can we leverage CIM (Common Information Model) framework for using big data in power industry?

Can we leverage CIM (Common Information Model) framework that is already in place through IEC standards (IEC 61970, 62325) for the big data use cases in utility industry??

13 September 2018 4,762 1 View

Negative slope in the curve of iron concentration and T2 relaxation?

I've done MRI imaging of iron oxide nanoparticles in phantom gels. The images are showing decreased signal intensities upon increasing the iron concentration, this is due to iron oxide being a...

15 December 2017 3,379 3 View

How the wettability of rock sample can be changed by ageing in pure hydrocarbon oils only?

I want to do wettability analysis of hydrocarbon oil (octane)/rock/surfactant solution system. but to do the analysis first I have to make rock surface oil-wet. Since hydrocarbon oil does not have...

27 February 2021 5,383 3 View

What are the patterns of human behavior that lead to COVID-19 infections?

Does data from contact tracing help in establishing patterns of behavior and social interactions that lead to infections? There are cases here in the Philippines where patients have no travel...

25 February 2021 9,002 13 View

How to measure angle between laser travel path and machine axis in Laser Measurement system?

25 February 2021 1,987 3 View

How to eradicate the deteriorated contact resistance in the electrical or electronic devices, like SCR or contactor' pin cable ?

Through years operation, some of the devices' pins connection gradually become worse and finally burn out due to the high temperature at the connection point. We can check out these risk points...

04 February 2021 7,401 5 View

Is it possible to find out the wettability and contact angle of water on the rough or corrugated substrate?

First of all, whether it is possible to identify the presence of water and its amount on the Silicon substrate by using only FT-IR spectroscopy. Can ATR-FTIR spectroscopy find out the wettability...

03 February 2021 9,085 4 View

Can I polymerize NIPPAm with PEGmethacrylate or only with PEGacrylate?

I want to perform the synthesis of a hydrogel and I want to know if I can polymerize NIPPAm with PEGmethacrylate or only with PEGacrylate?

02 February 2021 2,106 6 View

How can solve/disperse silicon nanoparticles in water?

I want to add silicon nanoparticles to my hydrogel, but when I sonicated these particles with water to disperse them in water, they agglomerated on the water's surface. How can I disperse them in...

26 January 2021 213 4 View

Anyone know how to dilute strong hydrogel structure?

I am working on PVA-GMA hydrogel that is a really strong polymeric structure like rubber. Because I am in the middle of analysis, it is difficult to dissolve the gel using a common solvent. I...

20 January 2021 3,501 2 View

How can I stain 3d printed cells in hydrogel without damaging the gel?

I tried staining my cells in a gel using standard protocols with 4PF% for fixation and triton-X or saponin for permeabilization but the gel always gets damaged throughout the steps, and at the end...

17 January 2021 4,170 1 View

Why Selenium nanoparticles synthesized by PEG 200 could not be scaled up ?

I could not synthesize Selenium nanoparticles by PEG 200 at up-scale ( more than 100 ml) as it got aggregated while at small amounts it works fine , I work with 850 PPM using selenium powder in...

08 January 2021 10,049 1 View