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@cdarwin@c.im
2026-06-19 18:21:16

This is the most detailed picture of a human cell ever made 🧪
instagram.com/reel/DX1CGIZMKJs

Sam Bousaba on Instagram: "This is a single human cell. The white filament-like structures are microtubules, and the small colored particles are ribosomes. Your body contains on the order of ~37 trillion cells. Each cell functions like a highly organized, self-regulating factory operating continuously. There is no central “supervisor”—yet thousands of processes run in parallel with remarkable coordination. Every ribosome is constantly building proteins by linking amino acids together. In eukaryotic (human) cells, a ribosome typically adds about 5–10 amino acids per second (not ~20). Since a single cell can contain millions of ribosomes, protein production is massive—resulting in millions to tens of millions of peptide bonds formed per second per cell. The microtubules act as an internal transport network. Motor proteins such as kinesin move along these tracks, carrying cellular cargo. They “walk” step by step using ATP, at speeds of roughly 500–1000 nanometers per second. Each cell contains a dense network of these filaments, with many motor proteins moving simultaneously. Just beneath the cell membrane lies the actin cortex, a dynamic meshwork that helps maintain cell shape and resist mechanical stress. This structure is continuously remodeled—assembled and disassembled—allowing the cell to adapt to its environment. Now scale this up. Across ~37 trillion cells, each containing millions of ribosomes and hundreds to thousands of mitochondria, your body is constantly producing energy in the form of ATP. Total ATP turnover is enormous—roughly equivalent to your body weight in ATP recycled every day. The DNA in a single human cell, if stretched out, measures about 2 meters. Across all your cells, this would span distances comparable to traveling from Earth to the Sun and back many times (the exact multiple depends on assumptions about cell count and DNA packing). None of these processes are under conscious control. They began when you were a single cell and have continued uninterrupted ever since."
62K likes, 2,387 comments - scienceoftheuniverse on May 2, 2026: "This is a single human cell. The white filament-like structures are microtubules, and the small colored particles are ribosomes. Your body contains on the order of ~37 trillion cells. Each cell functions like a highly organized, self-regulating factory operating continuously. There is no central “supervisor”—yet thousands of processes run in parallel with remarkable coordination. Every ribosome is constantly building prot…

@primonatura@mstdn.social
2026-07-20 14:00:30

"‘Chasing Deforestation’ in Liberia: Behind the scenes with Mongabay"
#Liberia #Deforestation #Trees

‘Chasing Deforestation’ in Liberia: Behind the scenes with Mongabay
Mongabay’s investigation into deforestation in Liberia started with a tip from a source last year. “There’s deforestation, and a migrant rights issue,” they said. Areas along the border with Côte d’Ivoire were losing vast swaths of rainforest to cacao farming. It was the beginning of a months-long journey that led us from the Liberian jungle […]

@leftsidestory@mstdn.social
2026-06-14 01:25:50

Perfection Because It Doesn’t Exist ☀️
完美因为完美不存在 ☀️
📷 Nikon F4E
🎞️ Kentmere 400
If you like my work, Support by buying me a coffee or a roll of film from
PayPal paypal.com/paypalme/ydcdingsite
Wise

Kentmere PAN 400 (FF) English A black-and-white photograph showing an open wooden door with a carved circular decoration on the right side. Beyond the doorway, a person stands in a courtyard with traditional Chinese architecture, including a tiled roof and brick walls. The ground is paved with stone tiles. 中文 一张黑白照片，展示了一扇打开的木门，右侧有一个圆形雕花装饰。门外，一个人站在传统中式建筑的庭院中，建筑包括瓦屋顶和砖墙。地面铺着石板。
Kentmere PAN 400 (FF) English A black-and-white photograph of a traditional Chinese building with a tiled roof and ornate eaves. A bare tree with twisted branches stands in front of the building. A person is seated on a bench in the foreground, partially obscured by the building's shadow. 中文 一张黑白照片，展示了一座传统中式建筑，屋顶覆盖着瓦片，屋檐装饰精美。建筑前有一棵光秃的树，枝干扭曲。前景中有一个人坐在长凳上，部分被建筑的阴影遮挡。
Kentmere PAN 400 (FF) English A black-and-white photograph of the interior of a traditional Chinese temple. A large, intricately carved wooden dragon sculpture wraps around a pillar on the right. In the background, there is a statue of a seated figure, likely a deity, surrounded by smaller statues. The ceiling features ornate wooden beams. 中文 一张黑白照片，展示了中国传统寺庙的内部。右侧有一条精美雕刻的木龙环绕在柱子上。背景中有一尊坐姿的神像，周围环绕着较小的雕像。天花板上有精美的木雕横梁。
Kentmere PAN 400 (FF) English A black-and-white photograph of a stone archway with intricate carvings, including a dragon head at the top left. The archway is part of a brick bridge, and below it, there is a circular stone basin over the river water. The reflection of the archway is visible in the water. 中文 一张黑白照片，展示了一个石拱门，上面有精美的雕刻，左上角有一个龙头。拱门是砖桥的一部分，下方有一个圆形的石盆，在水面上。拱门的倒影清晰地映在水中。
@cheryanne@aus.social
2026-07-20 12:16:32

The ResearchWorks Podcast
Designed for health professionals in the area of child health, where we discuss emerging, modern, evidence based research - the behind the scenes stories, interviews with world renowned authors and researchers...
Great Australian Pods Podcast Directory: greataustralianpo…

The ResearchWorks Podcast Screenshot of the podcast listing on the Great Australian Pods website
@idbrii@mastodon.gamedev.place
2026-06-19 22:12:42

Wild to imagine scanning Pokestops in Pokemon GO will make drones more efficient at attacking your city.
Has Black Mirror done an episode where they deploy GPS jamming against attacking drones but it falls back to spatial data built from the hero's own Pokescans to continue pursuit?

Pokémon Go Scans Quietly Trained The Navigation Tech Now Headed Into Military Drones
Pokémon Go players' 30 billion scans trained navigation tech now bound for military drones, via Niantic Spatial's defense partnership with Vantor.

@arXiv_physicsfludyn_bot@mastoxiv.page
2026-05-19 08:22:23

Ray-Column IPRM: Restoring Radial Spectral Scale to Structure-Based Turbulence Modeling
Stavros C. Kassinos
arxiv.org/abs/2605.17644 arxiv.org/pdf/2605.17644 arxiv.org/html/2605.17644
arXiv:2605.17644v1 Announce Type: new
Abstract: The particle representation model (PRM) and interacting particle representation model (IPRM) describe homogeneous turbulence through orientation-conditioned structural states. In their original form, the conditional state is organized by the unit spectral direction, while the radial spectral coordinate is integrated out. We introduce a scale-conditioned Ray-Column extension in which the spectral vector is decomposed into orientation and radial wavenumber, and the conditional structure state is projected onto finite radial bands.
The formulation starts from the continuum spectral tensor and is then reduced to the ray-packet ensemble sums used in the implementation. The bands are projections of an orientation-wavenumber tensor density and retain scale-conditioned structural populations for closure evaluation. The rapid dynamics remain ray-packet resolved, while the nonlinear slow and terminal closure coefficients are evaluated from band-aggregate structure tensors formed by integrating over orientation and wavenumber within each band. The present reference closure omits conservative cascade modeling among bands.
A reference closure is built from PRM rapid kinematics, band-local effective-gradient response, slow rotational randomization, and an active large-scale enstrophy (LSE) terminal-drain map. In the active-LSE closure, the misalignment-sensing factor Psi_fd regularizes the LSE structure-to-dissipation map; the Ray-Column formulation evaluates this map on band-aggregate structural populations. The model is assessed in irrotational strain, homogeneous shear, elliptic-streamline, and rotating-shear configurations. The rotating-shear comparison with filtered LES data illustrates the payoff of retaining band information: filtered or low-pass observables can be formed before scale information is lost in the one-point reconstruction.
toXiv_bot_toot

@leftsidestory@mstdn.social
2026-05-05 00:30:03

Urban Illusions and Fallacies - A Day In The Park III ⛲️
城市的幻影和谬误 - 公园的一天 III ⛲️
📷 Pentax MX
🎞️ ERA 100, expired 1993
If you like my work, Support by buying me a coffee or a roll of film from PayPal paypal.com/paypalme/ydcdingsite

ERA 100 (FF) English Black-and-white photograph of a large, leafless tree with sprawling branches in the foreground. Behind the tree, a traditional Chinese building with a tiled roof and ornate eaves is visible. The contrast between the bare tree and the detailed architecture creates a striking visual. 中文 黑白照片，前景是一棵枝干蔓延的大树，树上没有叶子。树后是一座传统中式建筑，屋顶铺有瓦片，屋檐装饰精美。光秃的树木与精美的建筑形成了鲜明的视觉对比。
ERA 100 (FF) English Black-and-white photograph capturing the intricate details of a traditional Chinese tiled roof. The roof features layered, curved tiles with decorative elements along the edges. Bare tree branches and a traditional Chinese wooden door frame the top front of the image, adding a natural element to the architectural focus. 中文 黑白照片，捕捉到一座传统中式瓦顶的精美细节。屋顶由多层弯曲的瓦片组成，边缘有装饰性元素。光秃的树枝和传统中式木门构成了图像的前上框，为建筑焦点增添了自然元素。
ERA 100 (FF) English Black-and-white photograph showing the upper section of a traditional Chinese building with a tiled roof. A surveillance camera is mounted on a pole to the right, pointing towards the building. Bare tree branches are visible in the background, adding depth to the scene. 中文 黑白照片，展示了一座传统中式建筑的上部，屋顶铺有瓦片。右侧有一根杆子，上面安装了一个监控摄像头，朝向建筑。背景中可以看到光秃的树枝，为场景增添了深度感。
ERA 100 (FF) English Black-and-white photograph of a park scene featuring a modern architecture with round, flat platforms. The architecture is partially blurred. In the background, there are more trees and a few people walking, adding a sense of scale and activity to the scene. 中文 黑白照片，展示一个公园场景，其中有一座现代建筑，建筑物有圆形的平台，有些许的模糊。背景中还有更多的树木和几个行走的人，为场景增添了尺度感和活动感。
@leftsidestory@mstdn.social
2026-04-29 00:28:19

Urban Illusions and Fallacies III 🏙️
城市的幻影和谬误 III 🏙️
📷 Pentax 6x7
🎞️ Kentmere Pan 200 (6x7)
If you like my work, Support by buying me a coffee or a roll of film from PayPal paypal.com/paypalme/ydcdingsite

Kentmere PAN 200 (6x7) English A black-and-white photograph featuring a bare tree with twisted branches in the foreground. Behind the tree, the ornate roof of a traditional Chinese building is visible, including detailed eaves and decorative elements. 中文 一张黑白照片，前景是一棵枝干扭曲的光秃树木。树后可见一座传统中式建筑的精美屋顶，屋檐和装饰元素细节丰富。
Kentmere PAN 200 (6x7) English A black-and-white photograph showing a close-up of a stone structure with a carved cloud-and-thunder pattern in the foreground. In the background, the ornate eaves of a traditional Chinese building are visible, featuring intricate roof decorations and small mythical creature statues along the roofline. Bare tree branches are also visible in the upper part of the image. 中文 一张黑白照片，近景为一块刻有云雷纹的石结构。背景中可见传统中式建筑的精美屋檐，屋顶装饰复杂，沿屋檐排列着小型神话生物雕像。照片上方还可见光秃的树枝。
Kentmere PAN 200 (6x7) English A black-and-white photograph showing a person walking along a narrow, white-walled corridor. The corridor is lined with traditional Chinese architectural elements, including a tiled roof with decorative eaves. The person is walking away from the camera, and there are trees and a scooter visible in the background. 中文 一张黑白照片，展示一个人沿着一条狭窄的白墙走廊行走。走廊两侧是传统中式建筑元素，包括装饰屋檐的瓦屋顶。此人背对镜头行走，背景中可见树木和一辆摩托车。
Kentmere PAN 200 (6x7) English A black-and-white photograph capturing a bare tree with a large, round lantern hanging from one of its branches. The lantern is spherical and appears to be made of fabric or paper. The tree branches are intricate and spread out against a clear sky. 中文 一张黑白照片，拍摄了一棵光秃的树，树枝上挂着一个大型的圆形灯笼。灯笼呈球形，看起来由布或纸制成。树枝错综复杂，映衬在清朗的天空下。
@leftsidestory@mstdn.social
2026-04-26 03:11:52

Corner and Corners 📐
角落和角落 📐
📷 Pentax 6x7
🎞️ Lucky SHD 400 (6x7)
If you like my work, Support by buying me a coffee or a roll of film from PayPal #filmphotography

Lucky LUCKY SHD 400 (6x7) A black-and-white photograph of a concrete wall corner, showing signs of wear and peeling paint. The wall is outdoors, with a tree and some vegetation visible in the background. The ground is tiled, and the wall appears to be part of a larger structure or building. 中文 一张黑白照片，拍摄的是一个混凝土墙角，墙面有磨损和脱落的油漆。墙在室外，背景中有树木和植被。地面铺有瓷砖，墙壁看起来是某个更大建筑或结构的一部分。
Lucky LUCKY SHD 400 (6x7) English A black-and-white photograph of a staircase with 7 steps. On the steps, there are two small bouquets of artificial flowers, each placed on a different step. The flowers are white with dark centers. The staircase is indoors, next to a window with vertical blinds, allowing light to filter through and create shadows. 中文 一张黑白照片，拍摄的是一个有七级台阶的楼梯。楼梯上放着两束小的人造花，每束放在不同的台阶上。花朵是白色的，花心较深。楼梯位于室内，靠近一个带有垂直百叶窗的窗户，光线透过百叶窗形成阴影。
Lucky LUCKY SHD 400 (6x7) English A black-and-white photograph of an open door leading into a room. Inside the room, there is a radiator under a window, and a small bouquet of flowers is placed on the windowsill. The floor is tiled, and there is an extinguisher, on the floor near the door. 中文 一张黑白照片，拍摄的是一扇开着的门，通向一个房间。房间内，窗户下面有一个暖气片，窗台上放着一小束花。地面铺有瓷砖，门附近的地上有一个灭火器。
Lucky LUCKY SHD 400 (6x7) English A black-and-white photograph showing a person standing on a balcony or terrace, looking out over a body of water. The person is seen from behind, wearing a jacket and pants. The scene is framed by vertical bars in the foreground, and the background features a lake or river, with trees and open space visible in the distance. 中文 一张黑白照片，展示一个人站在阳台或露台上，眺望着远处的水面。这个人从背后拍摄，身穿夹克和裤子。前景有垂直的栏杆，背景是湖泊或河流，远处可见树木和开阔空间。
@leftsidestory@mstdn.social
2026-06-26 00:30:06

The Look on the Bystander 👀
凝视旁观者 👀
📷 Pentax MX
🎞️ Ilford FP4 Plus 125 (FF), expired 1994
If you like my work, Support by buying me a coffee or a roll of film from
PayPal paypal.com/paypalme/ydcdingsite
Wise

Ilford FP4 Plus 125 (FF) English A black-and-white photograph of a covered walkway with intricate white decorative patterns on a dark ceiling. The walkway is flanked by buildings with railings and lanterns. Several people are walking beneath the covered area, and the perspective creates a sense of depth. 中文 一张黑白照片，展示了一个带顶棚的走廊，顶棚上有精美的白色装饰图案，背景为深色。走廊两侧是带有栏杆和灯笼的建筑。几个人在走廊下行走，透视感强烈。
Ilford FP4 Plus 125 (FF) English A black-and-white street scene featuring a man in the foreground, wearing glasses and a jacket. He stands near a large cylindrical pillar with a decorative pattern. In the background, other people are visible, some holding shopping baskets, and buildings with signage line the street. 中文 一张黑白的街道场景照片，前景是一名戴眼镜、穿夹克的男子。他站在一个带装饰图案的大圆柱旁。背景中可以看到其他人，有些人拿着购物篮，街道两侧是带有招牌的建筑。
Ilford FP4 Plus 125 (FF) English A black-and-white photograph showing a large pile of walnuts in their shells. The walnuts are scattered across a flat surface, with some spilling out of a transparent plastic bag on the right side. The lighting creates strong shadows, emphasizing the texture of the walnut shells. 中文 一张黑白照片，展示了大量带壳的胡桃。胡桃散落在一个平坦的表面上，右侧有一些胡桃从透明的塑料袋中溢出。光线投射出明显的阴影，突出了胡桃壳的纹理。
Ilford FP4 Plus 125 (FF) English A black-and-white photograph of a long, narrow reflecting canal lined with trees in full bloom on both sides. The canal reflects the trees and the sky. People are walking along the edges of the canal, and a tall building is visible in the far background. 中文 一张黑白照片，展示了一个狭长的运河河道，两侧种满了盛开的树木。河道倒映着树木和天空。人们在河道边行走，远处可见一栋高楼。