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

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

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

Extraction of Individual Phytochemicals (Fractionation)

I am currently working on a plant and am interested in possibly extracting individual phytochemicals, to be tested for activity. From literatures, thw chromatographic techiniques do not seen to be...

09 August 2017 1,640 5 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 someone help me with a BLTK1 or K9 Murine Leydig Cell line?

01 May 2015 1,375 3 View

Immunostimulatory stimulatory complexes

pls i am working on isolation of saponin from a plant for use as ISCOMS i need an advise on the best and affordable model to use

28 August 2011 8,924 4 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

What analysis to choose with a large neste dataset and clearly skewed or kurtotic distributions?

Hello! I have a dataset of n=3000 nested within 8 countries with approximately 200 or 400 responses in each country. I originally planned to perform multilevel modelling with 4 dependent variables...

02 March 2021 6,865 1 View

Is there a method of determining feed digestibility without the need to re-pellet the feed?

I am aiming to determine the ADC values of a commercial fish feed, but I do not have a steam pelleter or extruder available to me. Ideally, the pellets could be coated with some inert marker....

28 February 2021 7,967 3 View

Can Ethovision store the generated data and video recordings directly to NAS system?

The size of data generated by Ethovision is huge. Having NAS system for data storage seems to be a good option, I am wondering whether Ethovision can directly store the data to the NAS system...

27 February 2021 6,350 2 View

How to plot the probability paper of Gumbel distribution using R programing?

In R-studio, there are many commands of Gumbel package. Arguments are also different. I`m asking about the alpha parameter of the Copula which must be greater than 1. If this is the one used to...

25 February 2021 5,229 3 View

Can anyone help with Schistosoma identification?

Can anyone identify what kind of Schistosome species this might be? Morphological features of cercariae and adults resemble Trichobilharzia, though I am fairly new to the field of parasitology...

25 February 2021 7,760 6 View

Are there methods for automatically mapping floodplains, fans and terraces?

I want to map these river geoforms with as little subjectivity as possible. I have a high resolution DEM generated by drone data.

22 February 2021 7,800 3 View

How we can measure Kemp % in wool without using of benzene?

Would you please let me to know about the methods for measurement of medullation and Kemp % on animal? My problem is that the wool sampling and sending to laboratory is not possible. So I would...

21 February 2021 7,260 4 View

Do I need to introduce HFD to ob/ob mice to obtain a T2DM model?

I am planning to work on T2 diabetic animals and check the efficacy of probiotics. My initial plan is to fed B6 animals with HFD for a while. But now, I have the chance to work on ob/ob mice. My...

18 February 2021 6,896 3 View

What are the options for global scale hydrology DEM?

Hello, I am working on a global scale hydrology GIS project delineating global watersheds and doing some data analysis. I have in the past used hydro1K from the USGS that cover the entire world....

18 February 2021 5,109 5 View