How best can one separate n-hexane-soluble fraction of plant extract that binds strongly to silica gel columns and what are the possible compounds?

I wanted to elute n-hexane-soluble fraction of a plant extract in a silica gel column using different proportions of dichloromethane/n-hexane. The bands separated visibly initially but moved only...

18 January 2021 9,270 3 View

How do I plot the correlation coefficients (r) on a map based on a list of variables?

I am working to improve a manuscript and I have been advised to provide a map showing where the correlation is significant. Any information or links to learn about this would be quite helpful....

26 December 2020 1,162 5 View

Please l need suggestions from scientists on how to carry out snail vector control to reduce the incidence of schistosomiasis?

Can a snail vector be reared? If yes at what physiochemical conditions? Can a cercariae of schistosome be injected in an animal model? And which is the suitable model?

20 November 2019 1,748 2 View

Can I evaluate anti-alopecia effect of plant extract without inducing alopecia in an animal model?

This is a research I want to start as soon as I get a better model.

03 August 2019 3,131 2 View

How do I get access to reliable NDVI Images for computation of VCI and VHI of a given location?

Websites for free downloads; high spatial resolution of images

02 September 2018 1,296 2 View

Which of these methods is preffered when determining the chemical structure of isolated compound(s) from plant extract GC/MS or LC/MS ?

Whether polar or non-polar compounds.

12 August 2018 9,474 7 View

What may be the cause of this strange J-V curves in perovskite solar cells?

I fabricated some solar cell devices and I discovered that about 30% of the devices gave strange J-V curves as attached here.

09 June 2018 9,315 7 View

What are the vital issues and literature to consult in writing a paper titled "Biogeography: the master voice of the Environment"?

To portray biogeography as having a better grasp of understanding and addressing environmental problems

03 April 2017 4,104 6 View

How can one induce poison on experimental mice?

am working on the antidotes used to cure poison case

19 February 2017 6,661 5 View

How can I set mobile node (MANET) to be in promiscuous mode in opnet modeller simulator?

26 May 2015 4,347 1 View

Can we distinguish the type of free fluid inside the pelvic and abdominal cavities whether blood or serous fluid using the ultrasound?

during ultrasound examination of acute abdomen, sometimes we see free fluid , can we know the type of fluid ,whether blood or not , using ultrasound only? if yes , what are the sonographic...

01 March 2021 7,476 4 View

Does anyone knows about a really easy but still comprehensive ImageJ tutorial?

I am new to this software. I am in need of analyzing images from ocular ultrasounds (black/white) and find a way to quantify the internal reflectivities from the vitreous cavity in cases of...

16 February 2021 4,238 2 View

Interpretation of X-ray reflectivity spectrum?

Dear community, I performed XRR measurements on thin film AuAgSi alloys deposited on Si substrate, please see attached image. For simulation i included 2 nm of SiO2 on top of the substrate and i...

03 February 2021 5,325 2 View

Simulation using COMSOL Multiphysics for finding the reflectivity,transmittivity and emissivity?

Hello all, is it possible to simulate in comsol for a unknown materials to find out reflectivity, transitivity, emissivity when exposed to sunlight Thanks in advance!!

04 January 2021 6,190 4 View

Where can I find a dataset for kidney stones images (CT or ultrasound)?

I want to apply neural network on kidney stones images (whether its CT images or ultrasound) to determine whether the kidney has stones or not.

02 January 2021 9,938 3 View

How to convert mV output into MPa?

I am working on acoustic characterization of microbubbles using two transducers arranged at 90 degrees. During calibration, I am receiving response in dBm or mV. How I can know the PNP of my...

14 December 2020 1,814 5 View

How to couple laser light into a resonant bowtie cavity?

Hello, I'm trying to understand how one can input a laser light into a cavity, bow-tie for example, for mode cleaning or SHG/OPO light generating. If all the mirrors are high reflectivity, that...

07 December 2020 2,289 2 View

What are the names of glasses used in the solar panels?

For my research purpose, I need the name and optical properties of the glass used on the front surface of the solar panel. Can someone provide me the aforementioned data with valid references? Is...

22 October 2020 9,714 9 View

How can i increase the power of the ultrasonic pizeoelcetric sensor to atomize a viscous liquid?

I use a piezoelectric sensor, a humidifier electronic circuit and a 32-volt power supply to generate high-frequency ultrasound waves. I use these waves to atomize the liquid. the problem is that...

16 October 2020 5,097 8 View

Does anyone have the 3D datasets of ultrasound images of breast cancer or lung cancer?

I need the datasets for my research purpose. I want to do 3D segmentation on 3D ultrasound images.so I looking for 3D ultrasound images datasets.

16 August 2020 9,675 3 View