Why do most of the guaianolides contain a trans-alpha-methylene lactone and the pseudoguaianolides a cis-linked lactone?

27 May 2014 0 10K Report

Do cis-linked germacranolides exist? Is the biosynthetic pathway towards pseudoguaianolides elucidated yet?

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More Jan Hullaert's questions See All

Which research tool for expert validation for our study?

I am a 3rd year Computer Science student currently writing our Bachelor's thesis about finding diverse k-shortest paths in pedestrian networks. We have chosen 3 local areas as our proposed...

15 July 2024 4,289 0 View

How to purchase metabolites of pesticide standards ?

Penconazole 1. CGA 132465 2. CGA 190503 3. CGA 127841 Fluopyram 1. AE C656948-benzamide 2. AE C656948-pyridyl-acetic acid 3. AE C656948-carboxylic acid I have searched on sigma aldrich as well...

09 July 2024 3,414 2 View

Cresyl violet stained spinal cord sections keep turning black immediately once exposed to air prior to mounting. How can I prevent this?

I am sectioning 50um frozen spinal cord samples and trying to stain them with cresyl violet. At the end of the staining protocol, after the samples were washed with xylene, I dry the sample in...

18 May 2024 8,372 0 View

Can Flow cytometry for CD3,4,8+ T lymphocytes from dry frozen mouse spleen be possible?

Can I do flow cytometry analysis for CD3,4,8 positive T lymphocytes from the mouse spleen samples frozen in liquid nitrogen and stored at -80C?

10 May 2024 882 1 View

What are names of authors that have writing about technological imaginaries from a non-western, indigenous or historic perspective?

What are names of authors that have writing about technological imaginaries from a non-western, indigenous or historic perspective? I’m especially interested in origin stories from various...

06 May 2024 355 0 View

What could cause the baseline noise on ITC to increase in the span of one experiment?

Dear colleagues, as a part of our study on cyclophilins (Cyps), I wanted to test the well-known and strong interaction of CypA to cyclosporin A (CsA) on isothermal titration calorimetry (using...

23 April 2024 1,230 0 View

How is it possible that with 50 reads a week my research index only goes uo with 0,2 instead of 2,5 (50*0,05)?

The way this index is counted does correspond with the way researchgate says it is counted. I have 1800 reads this corresponds with at least 1800*0,05 = 90 But my score is only 54,7 Explain???

15 April 2024 7,089 3 View

Estimation of the correct time of cell death after radiotherapy?

Dear Colleagues, We plan to isolate and characterise extracellular vesicles released by dying cells during radiotherapy of head and neck squamous cell carcinoma. Given the duration of...

14 April 2024 494 3 View

What do N2 and B27 supplements contain?

I keep reading that N2B27 media is used in neural cell culture proliferation and stem cell culture maintenance. Do this media maintain pluripotency or does it direct differentiation. which...

31 March 2024 7,297 2 View

ANSYS SOFC Model with unresolved electrolyte, I am getting a very low current. Please help me. Please?

Hello! I am currently working on a study using the SOFC model with unresolved electrolyte. I am getting a very low current. If I lower my applied voltage in the cathode terminal, the calculated...

07 March 2024 6,083 0 View

The Bigger You Are, the Harder You Fall (some lessons from Dinosaurs)?

Evolutionary fitness is based on an organism’s ability to adapt rapidly to changing environmental circumstances. Large-bodied mammals have been equipped with large brains (and hence a high...

06 August 2024 4,849 2 View

Are air moisture harvesting technologies effective in combating desertification?

Air moisture harvesting Air water collection devices

06 August 2024 5,473 2 View

How do soil microflora interact with plant roots and influence plant nutrition, health, and productivity?

06 August 2024 9,618 3 View

State of art in natural disasters?

Are increasing the costs of disasters in the affected countries.

01 August 2024 1,794 2 View

How can I get my Granzyme B flow cytometry stain to be consistent?

I have used PE and PE-Dazzle 594 fluorochromes and have managed to get NK cells to properly show GranzymeB expression after 4 hr PMA/ionomycin stimulaton, but for some reason my CD8 cells in the...

01 August 2024 7,677 2 View

How do soil microbes affect plant health and productivity and how do plants interact with soil microorganisms and contribute to soil fertility?

31 July 2024 5,087 4 View

What is the role of decomposers in the cycling of matter in the biosphere and role do soil microbes play in plant nutrition availability and uptake?

31 July 2024 7,921 5 View

Posthoc test lettering in JAMOVI?

Does anyone know of a module for the JAMOVI software that is capable of generating mean separations using the classic letters based on post hoc results (e.g., Tukey test)? If, as I believe, such...

31 July 2024 3,333 4 View

What are the roles of innovation in achieving the Sustainable Development Goals (SDG)?

31 July 2024 3,533 2 View

How microorganisms are important for maintaining of healthy soil and biodiversity and microorganisms and plant roots contribute to soil formation?

31 July 2024 8,939 5 View