Petri Dish Art By @dashaplesen

(via Nikon Small World 2023 photo microscopy contest: Meet this year’s top 20 winners | Ars Technica)

Second place: a matchstick igniting by the friction surface of a matchbox.

Sunflower pollen on an acupuncture needle.

Watch what happens to Germs when you wash your hands with Soap at microscopic level. 🔬 The Soap molecules surround germ cells and disrupt their cell walls, causing them to burst.

Germ cells are surrounded by a cell wall that protects them from the environment. This cell wall is made up of a layer of peptidoglycan, which is a polymer of amino acids and sugars. Soap molecules are made up of two parts: a hydrophobic (water-fearing) tail and a hydrophilic (water-loving) head. When soap is added to water, the hydrophobic tails group together and the hydrophilic heads face outward, forming micelles. These micelles can surround germ cells and the hydrophobic tails can then disrupt the cell walls, causing the cells to burst.

The hydrophobic tails of the soap molecules can disrupt the cell wall in two ways. First, they can bind to the peptidoglycan molecules and weaken the bonds between them. Second, they can create holes in the cell wall. Once the cell wall is disrupted, the germ cells lose their internal contents and die.

It is important to note that soap only works to kill germ cells that are surrounded by a cell wall. Germ cells that do not have a cell wall, such as viruses, are not affected by soap.

The size of the soap micelles is important. Micelles that are too small will not be able to surround the germ cells. Micelles that are too large will not be able to penetrate the cell walls.

The concentration of soap is also important. A higher concentration of soap will be more effective at killing germ cells.

The temperature of the water can also affect the effectiveness of soap. Soap is more effective at killing germ cells in warm water than in cold water.

I hope this post has helped you understand the importance of handwashing and why doctors always ask you to do it regularly. Washing your hands with soap and water for at least 20 seconds is one of the best ways to prevent the spread of germs and stay healthy. So please, wash your hands often and help keep yourself and others safe!

Thank you for reading this post. I hope you found it informative and helpful. Please share it with your friends and family so they can learn about the importance of handwashing too. 😊🙏

improbable.com

Past Ig Winners

Ig® Nobel Prize Winners For achievements that first make people LAUGH then make them THINK Winners by year: 2023 : 2022 : 2021 2020 : 2019 :

The Ig Nobel Prize, for scientific research that makes people laugh and then makes them think. This year's winners!

CHEMISTRY and GEOLOGY PRIZE [POLAND, UK] Jan Zalasiewicz, for explaining why many scientists like to lick rocks. REFERENCE: “Eating Fossils,” Jan Zalasiewicz, The Paleontological Association Newsletter, no. 96, November 2017. Eating fossils | The Palaeontological Association (palass.org) WHO TOOK PART IN THE CEREMONY: Jan Zalasiewicz

LITERATURE PRIZE [FRANCE, UK, MALAYSIA, FINLAND] Chris Moulin, Nicole Bell, Merita Turunen, Arina Baharin, and Akira O’Connor for studying the sensations people feel when they repeat a single word many, many, many, many, many, many, many times. REFERENCE: “The The The The Induction of Jamais Vu in the Laboratory: Word Alienation and Semantic Satiation,” Chris J. A. Moulin, Nicole Bell, Merita Turunen, Arina Baharin, and Akira R. O’Connor, Memory, vol. 29, no. 7, 2021, pp. 933-942. doi.org/10.1080/09658211.2020.1727519 WHO TOOK PART IN THE CEREMONY: Chris Moulin, Akira O’Connor

MECHANICAL ENGINEERING PRIZE [INDIA, CHINA, MALAYSIA, USA] Te Faye Yap, Zhen Liu, Anoop Rajappan, Trevor Shimokusu, and Daniel Preston, for re-animating dead spiders to use as mechanical gripping tools. REFERENCE: “Necrobotics: Biotic Materials as Ready-to-Use Actuators,” Te Faye Yap, Zhen Liu, Anoop Rajappan, Trevor J. Shimokusu, and Daniel J. Preston, Advanced Science, vol. 9, no. 29, 2022, article 2201174. doi.org/10.1002/advs.202201174 WHO TOOK PART IN THE CEREMONY: Te Faye Yap and Daniel Preston

PUBLIC HEALTH PRIZE [SOUTH KOREA, USA] Seung-min Park, for inventing the Stanford Toilet, a device that uses a variety of technologies — including a urinalysis dipstick test strip, a computer vision system for defecation analysis, an anal-print sensor paired with an identification camera, and a telecommunications link — to monitor and quickly analyze the substances that humans excrete. REFERENCE: “A Mountable Toilet System for Personalized Health Monitoring via the Analysis of Excreta,” Seung-min Park, Daeyoun D. Won, Brian J. Lee, Diego Escobedo, Andre Esteva, Amin Aalipour, T. Jessie Ge, et al., Nature Biomedical Engineering, vol. 4, no. 6, 2020, pp. 624-635. doi.org/10.1038/s41551-020-0534-9 REFERENCE: “Digital Biomarkers in Human Excreta,” Seung-min Park, T. Jessie Ge, Daeyoun D. Won, Jong Kyun Lee, and Joseph C. Liao, Nature Reviews Gastroenterology and Hepatology, vol. 18, no. 8, 2021, pp. 521-522. doi.org/10.1038/s41575-021-00462-0 REFERENCE: “Smart Toilets for Monitoring COVID-19 Surges: Passive Diagnostics and Public Health,” T. Jessie Ge, Carmel T. Chan, Brian J. Lee, Joseph C. Liao, and Seung-min Park, NPJ Digital Medicine, vol. 5, no. 1, 2022, article 39. doi.org/10.1038/s41746-022-00582-0 REFERENCE: “Passive Monitoring by Smart Toilets for Precision Health,” T. Jessie Ge, Vasiliki Nataly Rahimzadeh, Kevin Mintz, Walter G. Park, Nicole Martinez-Martin, Joseph C. Liao, and Seung-min Park, Science Translational Medicine, vol. 15, no. 681, 2023, article eabk3489. doi.org/10.1126/scitranslmed.abk3489 WHO TOOK PART IN THE CEREMONY: Seung-min Park

COMMUNICATION PRIZE [ARGENTINA, SPAIN, COLOMBIA, CHILE, CHINA, USA] María José Torres-Prioris, Diana López-Barroso, Estela Càmara, Sol Fittipaldi, Lucas Sedeño, Agustín Ibáñez, Marcelo Berthier, and Adolfo García, for studying the mental activities of people who are expert at speaking backward. REFERENCE: “Neurocognitive Signatures of Phonemic Sequencing in Expert Backward Speakers,” María José Torres-Prioris, Diana López-Barroso, Estela Càmara, Sol Fittipaldi, Lucas Sedeño, Agustín Ibáñez, Marcelo L. Berthier, and Adolfo M. García, Scientific Reports, vol. 10, no. 10621, 2020. doi.org/10.1038/s41598-020-67551-z WHO TOOK PART IN THE CEREMONY: María José Torres-Prioris, Adolfo García

MEDICINE PRIZE [USA, CANADA, MACEDONIA, IRAN, VIETNAM] Christine Pham, Bobak Hedayati, Kiana Hashemi, Ella Csuka, Tiana Mamaghani, Margit Juhasz, Jamie Wikenheiser, and Natasha Mesinkovska, for using cadavers to explore whether there is an equal number of hairs in each of a person’s two nostrils. REFERENCE: “The Quantification and Measurement of Nasal Hairs in a Cadaveric Population,” Christine Pham, Bobak Hedayati, Kiana Hashemi, Ella Csuka, Margit Juhasz, and Natasha Atanaskova Mesinkovska, Journal of The American Academy of Dermatology, vol. 83, no. 6, 2020, pp. AB202-AB202. doi.org/10.1016/j.jaad.2020.06.902 WHO TOOK PART IN THE CEREMONY: Christine Pham, Natasha Mesinkovska, Margit Juhasz, Kiana Hashemi, Tiana Mamaghani

NUTRITION PRIZE [JAPAN] Homei Miyashita and Hiromi Nakamura, for experiments to determine how electrified chopsticks and drinking straws can change the taste of food. REFERENCE: “Augmented Gustation Using Electricity,” Hiromi Nakamura and Homei Miyashita, Proceedings of the 2nd Augmented Human International Conference, March 2011, article 34. doi.org/10.1145/1959826.1959860 WHO TOOK PART IN THE CEREMONY: Homei Miyashita, Hiromi Nakamura

EDUCATION PRIZE [CHINA, CANADA, UK, THE NETHERLANDS, IRELAND, USA, JAPAN] Katy Tam, Cyanea Poon, Victoria Hui, Wijnand van Tilburg, Christy Wong, Vivian Kwong, Gigi Yuen, and Christian Chan, for methodically studying the boredom of teachers and students. REFERENCE: “Boredom Begets Boredom: An Experience Sampling Study on the Impact of Teacher Boredom on Student Boredom and Motivation,” Katy Y.Y. Tam, Cyanea Y. S. Poon, Victoria K.Y. Hui, Christy Y. F. Wong, Vivian W.Y. Kwong, Gigi W.C. Yuen, Christian S. Chan, British Journal of Educational Psychology, vol. 90, no. S1, June 2020, pp. 124-137. doi.org/10.1111/bjep.12549 REFERENCE: “Whatever Will Bore, Will Bore: The Mere Anticipation of Boredom Exacerbates its Occurrence in Lectures,” Katy Y.Y. Tam, Wijnand A.P. Van Tilburg, Christian S. Chan, British Journal of Educational Psychology, epub 2022. doi.org/10.1111/bjep.12549 WHO TOOK PART IN THE CEREMONY: Christian Chan, Katy Y.Y. Tam, Wijnand A.P. Van Tilburg

PSYCHOLOGY PRIZE [USA] Stanley Milgram, Leonard Bickman, and Lawrence Berkowitz for experiments on a city street to see how many passersby stop to look upward when they see strangers looking upward REFERENCE: “Note on the Drawing Power of Crowds of Different Size,” Stanley Milgram, Leonard Bickman, and Lawrence Berkowitz, Journal of Personality and Social Psychology, vol. 13, no. 2, 1969, pp. 79-82. psycnet.apa.org/doi/10.1037/h0028070 WHO TOOK PART IN THE CEREMONY: Len Bickman

PHYSICS PRIZE [SPAIN, GALICIA, SWITZERLAND, FRANCE, UK] Bieito Fernández Castro, Marian Peña, Enrique Nogueira, Miguel Gilcoto, Esperanza Broullón, Antonio Comesaña, Damien Bouffard, Alberto C. Naveira Garabato, and Beatriz Mouriño-Carballido, for measuring the extent to which ocean-water mixing is affected by the sexual activity of anchovies. REFERENCE: “Intense Upper Ocean Mixing Due to Large Aggregations of Spawning Fish,” Bieito Fernández Castro, Marian Peña, Enrique Nogueira, Miguel Gilcoto, Esperanza Broullón, Antonio Comesaña, Damien Bouffard, Alberto C. Naveira Garabato, and Beatriz Mouriño-Carballido, Nature Geoscience, vol. 15, 2022, pp. 287–292. doi.org/10.1038/s41561-022-00916-3 WHO TOOK PART IN THE CEREMONY: Bieito Fernandez Castro, Beatriz Mouriño-Carballido, Alberto Naveira Garabato, Esperanza Broullon, Miguel Gil Coto

Biology - blue

Credits under the cut

Keep reading

FOTD #114 : purple brittlegill! (russula atropurpurea)

the purple brittlegill (also blackish-purple russula) is a mycorrhizal fungus in the family russulaceae. it grows with both coniferous & deciduous trees !! it has been recorded in europe, asia & eastern north america. :-)

the big question : can i bite it?? yes, though it's not particularly recommended. it is said to taste.. hot?

r. atropurpurea description :

"the cap is 4–10 cm (1.5–4 in) in diameter. it is dark reddish purple, with a dark; sometimes almost black centre. at first it is convex, but later flattens, & often has a shallow depression. it can also be lighter in colour, or mottled yellowish. the stem is firm, white, & turns grey with age. it measures 3–6 cm in length & 1–2 cm in diameter. the closely set and fairly broad gills are adnexed to almost free, & pale cream, giving a spore print of the same colour."

[images : source & source] [fungus description : source]

A phase-contrast micrograph of a ciliate (Frontonia sp.) digesting blue-green algae (cyanobacteria). 

The cytostome (the “mouth” of the cell) is seen on the right side down.

image: Wiedehopf20 | Wikipedia CC

Chlorociboria cup fungi and Hemitrichia decipiens slime mold by Alison Pollack

FOTD #066 : cornflower bolete! (gyroporus cyanescens)

the cornflower bolete (AKA bluing bolete) is a species of bolete fungus in the family gyroporaceae. it is found in asia, australia, europe, & eastern north america. most often, this bolete grows on the ground in coniferous & mixed forests :-)

the big question : can i bite it??yes !! it is choice. there are many online tutorials on how to cook it, too.

g. cyanescens description :

"the yellowish to buff cap surface is fibrous & roughened, & reaches up to 12 cm (4.7 in) in diameter. the thick stem, roughly the same colour as the cap or lighter, is hollowed out into chambers. all parts of the mushroom turn an intense blue colour within a few moments of bruising or cutting."

[images : source & source] [fungus description : source]

Ode to the Microbe

Prints

The shape of a fish's caudal tail can tell you a lot about how fast the fish moves! A rounded tail is the slowest and a lunate tail is the fastest! The lunate tail has the most optimal ratio of high thrust and low draw, making it the fastest.

Ichthyology Notes 2/?