Why drones are pushed out of hive by Apis mellifera wokers during dearth period ?

Reasons are likely shortage of food stores or avoiding infestation by varooa mites... But i m looking for published literature for specific reasons as well

12 October 2019 5,225 2 View

Can I create surface mesh on cylinderical solid body with sweep method?

I have a 3D problem of cylinders and I would like to create a structured mesh around it using ANSYS workbench. Can I do structured mesh on the surface of solid cylinder only? Please suggest what...

05 February 2015 964 1 View

What are some useful methods & tools for finding relevant biomarkers for projects?

With the growing number of biomarkers regularly discovered, going through clinical trials and more slowly translating into the clinic, what options are available to shortlist and find biomarkers?...

26 May 2014 1,260 2 View

Can anyone recommend a protocol for ion pair reverse phase hplc?

I am looking for a protocol for ion pair reverse phase hplc using Luna C18(2) column for estimation of intracellular nucleotide precursors (e.g. UTP, UDP, ATP, AMP etc.). The major concern is that...

09 March 2014 7,821 4 View

Is there any method for quantification/estimation of NAD/NADH using colorimetric method?

I know one kit but I am looking preferentially for some colorimetric analysis or quantification using fluorescence spectroscopy. Help regarding any of the methods would be appreciated.

19 January 2014 926 2 View

What is the approximate range of concentration of NAD/NADH in bacterial samples?

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02 January 2014 4,349 1 View

Adding reactions to already existing mfa model - can anyone help?

I need to add reactions to an already existing set of reactions used for metabolic flux analysis for a pathway. While doing that I am getting all random and unrealistic values for fluxes. What...

01 January 2014 8,275 4 View

Can anyone suggest how to prepare the Zn precursor solution for the denser thin film?

I used zinc acetate dihydrate as a precursor.

01 October 2013 7,829 2 View

Is there any standardard method for drying pollen grains collected by installing pollen traps in an apis mellifera colony?

APICULTURIST

01 January 1970 2,468 3 View

Links for online ertificate courses in Agricultural Entomology in Universities outside India???

Regarding online certificate course in Integrated Pest Management, Apiculture or Urban Pest Management Online outside India

01 January 1970 2,417 6 View

Does anyone have heavy ion C12 radiation therapy simulated in Geant4-DNA?

I am a novice in using Geant4, and I want to use Geant4 to do some study or research in radiobiology. What comes to my mind is to use Geant4 to simulate heavy ion irradiation. Could anyone please...

05 January 2021 7,596 1 View

What kind of detector is used in the double slit experiment to determine through which slit the photon or electron passes?

Explain exactly what the detector does and if the choice of detector affects the outcome. Einstein and Bohr had some discussions on this. What's the current situation?

29 December 2020 1,984 5 View

No executable file generates while building geant4 example code, where is the problem?

Hello, I am a newbie in geant4. I'm learning it playing with example. Sometimes, when I go to simulate an example code, it doesn't create an executable file (the green one in my ubuntu terminal)....

26 December 2020 9,482 3 View

Interpreting and troubleshooting anomalous HPLC results?

I am running a simple isocratic Shimadzu HPLC system coupled to a fluorescence detector to detect and quantify biogenic amines from in vivo samples. But my results are not as expected and I'm...

10 November 2020 7,027 5 View

What HPLC detector to choose to detect surfactants?

Colleagues We have a Waters e2695 HPLC instrument (with 2489 Uv-Vis detector). Recently we initiated the analysis of surfactants/lipids, which are unfortunately poorly visible to UV detector. We...

08 November 2020 4,645 18 View

Can anyone suggest a cause for a lack of fluorescent signal from a Diorex UltiMate 3000 RS detector in an HPLC experiment?

I am trying to detect viral capsids using an UltiMate HPLC system. I have a strong peak at the expected retention time using a 260/280nm UV detector, however I am not receiving any signal from the...

27 October 2020 3,786 2 View

What detector/sensor would be the best to use in measuring size of plastic in bodies of water?

We plan to identify the sizes of plastic in bodies of water from the surface using a device, but we are not so sure what to use best in order for us to identify it. Should we use infrared sensors,...

07 October 2020 2,702 6 View

Can I use Ultrs AQ C18 column for aflatoxin ?

07 October 2020 9,811 2 View

Does anybody have a method for quantification of neomycin sulphate using HPLC with a UV/Vis detector& reversed phase columns?

Does anybody have a method for quantification of neomycin sulphate using HPLC with a UV/Vis detector& reversed phase columns?

04 October 2020 6,181 3 View

How to resume a Gate (geant4) simulation after a crash or power failure?

Very long simulations may be subject to computer failure for many reasons. Is there a command in Gate to save (or dump) the state of a simulation and be able to resume it later?

04 October 2020 8,133 2 View