Dr Geertje van Keulen's Avatar

Dr Geertje van Keulen

@drgvank.bsky.social

SwimmingπŸŠβ€β™€οΈ sewciophilic🧡microbial 🧫biochemistπŸ§ͺ🧬/biomaterials βš’οΈ scientist; (bio)chemistry, materials and ecobiology of actinos/natural products; microbiology/chemistry in hot tubs; Biofilm Alliance; Advisory Council member Microbiology Society; She/her

1,397 Followers  |  1,148 Following  |  560 Posts  |  Joined: 19.08.2023
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Posts by Dr Geertje van Keulen (@drgvank.bsky.social)

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27.01.2026 22:44 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

:(

27.01.2026 22:13 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

🧫🦠πŸ§ͺπŸ§¬πŸ’»

17.12.2025 18:36 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

@joeeweaver.bsky.social heya, what is the best email address to reconnect with you? Have an old Newcastle address that bounced earlier

16.12.2025 18:29 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
The dangers of using bibliometrics with polluted data This week I attended a Webinar organised by Clarivate on the topic of β€œ Eugene Garfield Centenary Celebration: Past, Present and Future ...

For those interested in metrics-based quality assessment of scienctific publication, good read hereπŸ‘‡.
And yes, I am fully aware of DORA and CoARA

deevybee.blogspot.com/2025/11/the-...

30.11.2025 12:26 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Yay for actinos and #natprod! See you in Belfast?!
🧫πŸ§ͺ🧬🦠

02.11.2025 21:06 β€” πŸ‘ 7    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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πŸ“£Had a great day at the #STAconference25 today, lots of interesting πŸŠβ€β™€οΈpool plant engagement relevant for our 🧫Biofilm Alliance network!
😜And got to meet the keynote olympicπŸŠπŸ»β€β™€οΈπŸ₯‡πŸ₯‡πŸ₯‰πŸ₯‰speaker tooπŸ‘‡πŸ‘‡πŸ‘‡

17.10.2025 20:47 β€” πŸ‘ 9    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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#biofilms #risks #health #management #prevention #standards #regulatoryguidance #staconference25 | Biofilm Alliance πŸ“£Biofilm Alliance at STA (Swimming Teachers Association) Conference 2025 We are pleased to share that Biofilm Alliance 's WaterπŸ’§πŸŠβ€β™€οΈ Lead Geertje van Keulen from Swansea University / Prifysgol Aberta...

Soooo, this is happening tomorrow!
www.linkedin.com/posts/biofil...

16.10.2025 20:30 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Ta!
5 ul spores at which density?

14.10.2025 17:35 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Hey #streptomyces #natprod fans:
1. What is your favourite agar for growing really thick and dense aerial mycelial lawns?
2. How many spores would you inoculate on one 🧫 for thick and dense lawns?
#microsky πŸ§ͺπŸ§¬πŸ”¬

14.10.2025 16:30 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 2    πŸ“Œ 0

A colleague received proofs of an accepted manuscript, and the "proofing process" clearly involved running the text through ChatGPT. Their voice has been erased, and errors introduced. This is from a supposedly reputable publisher. Anyone else been put through this particular form of hell? #MicroSky

24.09.2025 10:53 β€” πŸ‘ 16    πŸ” 11    πŸ’¬ 3    πŸ“Œ 0
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Direct single-molecule detection and super-resolution imaging with a low-cost portable smartphone-based microscope - Nature Communications Loretan and colleagues present a low-cost smartphone-based microscope capable of detecting single-molecule fluorescence. This approach opens doors to personalised and widely distributed applications in diagnostics, biosensing, and science education.

Wow😲🀩
πŸ§ͺ🧫 πŸ§¬πŸ”¬βš—οΈ

www.nature.com/articles/s41...

08.10.2025 21:39 β€” πŸ‘ 22    πŸ” 6    πŸ’¬ 1    πŸ“Œ 0
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Glorious start of the day in Amsterdam!
Looking forward to meeting the scientists in EU COST Action 🧫🦠#Biofilm Regulatory Toolbox today and start discussions on how to progress #standards #methods aiming to ultimately develop #regulatory guidance

24.09.2025 05:29 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Not open access alas...

21.09.2025 10:40 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

The Dutch word for constant is also starting with a k!

17.09.2025 15:12 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Safety and nutritional claims for raw milk Robert F Kennedy Jr. famously advocates drinking raw milk and promotes its benefits. But how safe is unpasteurised milk? Nicola Holden and Gil Domingue, who sit on Applied Microbiology International's Food Security Scientific Advisory Group, take a deep dive into the science.

Robert F Kennedy Jr. famously advocates drinking raw milk and promotes its benefits. But how safe is unpasteurised milk? Nicola Holden and Gil Domingue, who sit on AMI’s Food Security Scientific Advisory Group, take a deep dive into the science. www.the-microbiologist.com/opinion/safe...

27.08.2025 12:13 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0

Lots of integrative plasmids are linear. Streptomyces Ecoli shuttle plasmids (circular, often low cooy) allow cloning in Ecoli before moving into Streptomyces

13.09.2025 15:56 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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The Sequence of a 1.8-Mb Bacterial Linear Plasmid Reveals a Rich Evolutionary Reservoir of Secondary Metabolic Pathways Abstract. Plasmids are mobile genetic elements that play a key role in the evolution of bacteria by mediating genome plasticity and lateral transfer of use

Some Streptomyces plasmids can be huge eg pSCL4 is 1.8Mb!

doi.org/10.1093/gbe/...

12.09.2025 13:16 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0

Streptomyces is not suitable for chemical or electro-transformation methods

12.09.2025 13:12 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Yeah, integrating plasmids can be quite big indeed. If they contain a Tra element than they can be conjugated. This sometimes needs Ecoli strain changeover if host has a methylated DNA restriction system. Plasmids without conjugative element can be moved into Streptomyces via protoplasting

12.09.2025 13:11 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Predatory conference check Q:
Is the Global Food & Agri Summit 2026 in the Netherlands a predatory conference or is it legit?
#science #conference #predatory?

12.09.2025 13:06 β€” πŸ‘ 0    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Could be integrating plasmids? Streptomyces uses this a lot

11.09.2025 19:29 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Follow us on LinkedIn www.linkedin.com/company/biofilm-alliance/

10.09.2025 18:33 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

More info on the Biofilm Alliance here: www.biofilm-alliance.org

10.09.2025 18:29 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Microsoft Forms

Professional Request:if you work with/research or experience #biofilms in your work/company/client environments, can you please complete our Biofilm Alliance survey?
The survey will close soon, so last chance to submit your experiences and influence the next steps!
forms.office.com/e/7rYEETJT74
πŸ§ͺ🧫🦠

10.09.2025 18:27 β€” πŸ‘ 4    πŸ” 3    πŸ’¬ 1    πŸ“Œ 0
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A new bench at JIC in memory of Helen Kieser. She moved to Norwich with David Hopwood in the 1960s and was instrumental in establishing the Streptomyces group and Molecular Microbiology @johninnescentre.bsky.social. Hard to overstate her importance to the #streptomyces field and community.

12.08.2025 16:41 β€” πŸ‘ 32    πŸ” 7    πŸ’¬ 1    πŸ“Œ 0

@tadhgocroinin.bsky.social you must be chuffed! Started counting off the names yet?!🀣
bsky.app/profile/meto...

01.09.2025 22:44 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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a little boy is playing drums in front of an orchestra and says happy birthday to you ! ALT: a little boy is playing drums in front of an orchestra and says happy birthday to you !

@matthutchings.bsky.social happy birthday, wishing you a lovely day!

24.08.2025 08:16 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Is that a Pioreactor?

15.08.2025 17:06 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

β€œWriting an essay is hard because it forces you to use your brain in ways you haven't before…Your job is not to turn in completed assignments; it's to learn how to think. Turning in completed assignments can help you learn how to think, but only if you're the one who completed them.”

14.08.2025 14:21 β€” πŸ‘ 38    πŸ” 10    πŸ’¬ 1    πŸ“Œ 0