How do extract/distill queen phermones from queen bees?

I need to extract (or distill) queen pheromones from queen bee mandibular glands. Are there any methods for doing this? I am conducting an experiment pheromone attract and repel.

07 August 2019 3,038 5 View

How do I determine magnification on Nikon SMZ460?

We just purchased three Nikon SMZ460 stereo scopes. They have 20x eyepieces and no auxiliary objective. We are looking at small insects. There is too much magnification. We can only see one insect...

10 November 2018 1,068 3 View

Is there a histology stain for staining the polar tube in Nosema apis and/or N. ceranae?

I am looking for a protein stain for Nosema apis and/or N. ceranae polar tubes for brightfield or fluorescence microscopy.

09 October 2017 696 1 View

Is there a turn key software package for studying pathogen morphology?

Does any know of a turnkey software application for distinguishing different morphologies of pathogens in the same genus? i.e., I have two microsporidial pathogens that have slightly different...

09 October 2016 8,913 2 View

Anecic worms

Is anyone in the United States studying the relationship between anecic worms and soil structure?

11 December 2014 4,182 0 View

Has anyone ever seen the yellow structures in the attached image of the honey bee midgut?

...

05 June 2013 514 1 View

Is anyone doing any histo staining of the honey bee ventriculus in healthy honey bees and bees infected with Nosema ceranae?

Looking for stains that bind calcium.

03 April 2013 8,574 4 View

How to define and get results (stresses) for certain points of a model in abaqus, using python? When the size of the model changes?

I want to do a parameter study of a aixsymmetric cylinder in Abaqus. I want to create several jobs where I get the stresses for 3 different points in my model. These points are defined. I wrote a...

01 March 2021 10,078 1 View

LOAD DISPLACEMENT CURVES Stiffness increasing in ANSYS non linear analysis. HOW CAN I CORRECT IT?

Hi. I am doing non linear FE analysis using a new material beam under flexural 2 point loading using ANSYS. I have defined a bilinear material model. The solution has converged. In results I am...

01 March 2021 9,911 3 View

How relevant is Mini slump cone?

for all the rheology researchers, my question is, how relevant is a mini slump cone (smaller than a standard 50 cent rheometer). currently based on testing, the thickness of slumped material is...

26 February 2021 3,668 1 View

Stress/strain tensors decomposition ???

25 February 2021 6,760 1 View

How to reduce residual stresses in MD simulation?

I am working on a preparation of representative polymeric structures of some popular polymers, such as polyimide or PTFE for MD simulation, during which a single nitrogen or oxygen atom will be...

24 February 2021 8,105 3 View

Suggestions for occupational stress surveys?

I am currently writing a masters thesis on reasons for occupational stress in the early childhood classroom, and want to include a short survey assessing participants work-related stress levels. I...

24 February 2021 8,678 2 View

The most suitable method to calculate the stress intensity factor in the presence of contact between the crack lips?

I'm trying to study cracked structures under a compressive load taking into account contact between the crack lips. I would like to know if the method of extrapolation by displacement remains...

21 February 2021 8,694 4 View

How to assign two different material/section properties in Abaqus(UMAT)?

Hi everyone, I am conducting a non-linear multi-layer pavement structure analysis which is a stress-dependent. So far, I am able to define the nonlinearity for one soil layer for its resilient...

11 February 2021 9,607 3 View

Are there any exception like work hardening in metals elastic limit due to dynamic loading?

The samples made out of spring steel are taken from same lot. The specimens were shaped following heating to forging temperature - Forming- Hardening -Tempering methods. After storage of almost 6...

11 February 2021 952 6 View

How to write cyclic loading in OpenSees?

Hi there, I'm having trouble with adding cyclic loading in OpenSees software. My task is to model a reinforcing bar under cyclic loading and compare the response with the experimental results....

04 February 2021 8,158 1 View