#Battery performance testing

[semcoinfratechworld]

Ensuring Battery Performance Through Advanced Air Tightness Testing

In the high-stakes world of energy storage, a tiny leak can have disastrous consequences. That’s why ensuring the utmost battery air tightness testing is crucial for battery performance testing, extended lifespan, and most importantly, safety.

This article delves into the secrets of advanced air-tightness testing for batteries, exploring various air-tightness testing methods for batteries and unveiling the impact they have on your energy storage system’s overall health and reliability. Get ready to discover how proper battery sealing and air tightness can unlock the full potential of your batteries and keep your energy flowing smoothly.

Consequences of Leakage in a Battery Pack

The cracking of the sealing glue of the upper cover and the bottom groove causes poor sealing, which is easy to causes the external liquid to penetrate and pollute the working environment of the battery.

The leakage of the safety valve due to the sealing problem may cause damage to other parts.

Inadequate sealing leads to acid leakage at the terminal, which affects the battery and vehicle wires and causes the circuit to burn out.

If it is not sealed, it will lead to the loss of power capacity, a decline in battery life, and reduced safety.

Parts to Be Tested

The combination of the upper and lower boxes, high-voltage electrical connectors, water-cooled pipes, and heat dissipation ports (waterproof and breathable holes) are the key areas for battery air tightness testing.

Difficulties in Detection

A. The battery pack has a large area, small internal space, and a thin shell that can withstand less pressure.

B. The battery pack is equipped with a high-voltage connector port and a heat dissipation port, creating challenges in effective blockage during testing.

Battery Pack Detection Requirements

For the battery pack air tightness assessment, there are two indicators: pressure drop value and leakage rate. The pressure drop value represents the change in internal pressure during testing, while the leakage rate measures the rate of leakage. These factors are critical in battery quality control through air tightness testing.

According to the internal pressure of the battery pack and external atmospheric pressure, tests are divided into positive pressure and negative pressure categories.

The air leakage testing in batteries primarily uses dry compressed air to inflate (positive pressure) or deflate (negative pressure) the tested object, determining if the body is leaking. Leaks cannot be directly measured but can be inferred from changes in pressure. If the pressure inside the object drops significantly, it indicates a leak.

Conclusion

Energy storage batteries require stringent leak detection for battery performance and battery safety and air tightness testing due to potential hazards and degradation caused by leaks. Lithium-ion battery air tightness tests play a crucial role in ensuring long-term performance and durability. Preventing leaks in battery manufacturing through reliable air-tightness testing methods ensures that battery packs perform optimally, safeguarding both performance and safety.

[keyworthgarages]

[maheshtelecom]

📸✨ Is the Xiaomi 14 Ultra Worth ₹1 Lakh? 🚀

📸✨ Is the Xiaomi 14 Ultra Worth ₹1 Lakh? 🚀 With its cutting-edge camera and powerful smartphone capabilities, the Xiaomi 14 Ultra promises a lot. But does it live up to the hype and price tag? 🤔 Find out in our detailed review! 🎥👇 🔗 https://youtu.be/KxGdO-1NfGo Xiaomi14Ultra #TechReview #MobilePhotography #WorthIt #Xiaomi #CameraPhone #TechLovers #Innovation #GadgetReview…

[androidaddictsx]

Samsung Galaxy Z Fold 5 vs Fold 4 Battery Drain Test

The Galaxy Z Fold 5 has a 4,400mAh battery just like the Z Fold 4 - but is the new Snapdragon 8 Gen 2 much more efficient? Let's find out in this battery drain test! #zfold5 #zfold4

The Galaxy Z Fold 5 has a 4,400mAh battery just like the Z Fold 4 – but is the new Snapdragon 8 Gen 2 much more efficient? Let’s find out in this battery drain test! 00:00 Intro01:00 4K Video Recording01:26 4K Video Render02:13 Phone Call02:42 Standby Test03:35 Twitter04:04 Instagram04:35 TikTok04:58 Reddit05:25 Spotify05:50 YouTube06:28 Genshin Impact07:00 PUBG07:17 Final Thoughts Sorry for…

[adam-tas]

Looking for a cheap phone? Xiaomi got it all covered:

[dandelionsresilience]

Good News - June 8-14

Like these weekly compilations? Tip me at $Kaybarr1735! And if you tip me and give me a way to contact you, at the end of the month I'll send you a link to all of the articles I found but didn't use each week!

1. Rare foal born on estate for first time in 100 years

“The Food Museum at Abbot's Hall in Stowmarket, Suffolk, is home to a small number of Suffolk Punch horses - a breed considered critically endangered by the Rare Breeds Survival Trust. A female foal was born on Saturday and has been named Abbots Juno to honour the last horse born at the museum in 1924. [...] Juno is just one of 12 fillies born so far this year in the country and she could potentially help produce more of the breed in the future.”

2. The cement that could turn your house into a giant battery

“[Scientists] at Massachusetts Institute of Technology (MIT) have found a way of creating an energy storage device known as a supercapacitor from three basic, cheap materials – water, cement and a soot-like substance called carbon black. [... Supercapacitators] can charge much more quickly than a lithium ion battery and don't suffer from the same levels of degradation in performance. [... Future applications of this concrete might include] roads that store solar energy and then release it to recharge electric cars wirelessly as they drive along a road [... and] energy-storing foundations of houses.”

3. New road lights, fewer dead insects—insect-friendly lighting successfully tested

“Tailored and shielded road lights make the light source almost invisible outside the illuminated area and significantly reduces the lethal attraction for flying insects in different environments. [...] The new LED luminaires deliver more focused light, reduce spill light, and are shielded above and to the side to minimize light pollution. [... In contrast,] dimming the conventional lights by a factor of 5 had no significant effect on insect attraction.”

4. When LGBTQ health is at stake, patient navigators are ready to help

“[S]ome health care systems have begun to offer guides, or navigators, to get people the help they need. [... W]hether they're just looking for a new doctor or taking the first step toward getting gender-affirming care, "a lot of our patients really benefit from having someone like me who is there to make sure that they are getting connected with a person who is immediately going to provide a safe environment for them." [... A navigator] also connects people with LGBTQ community organizations, social groups and peer support groups.”

5. Tech company to help tackle invasive plant species

“Himalayan balsam has very sugary nectar which tempts bees and other pollinators away from native plants, thereby preventing them from producing seed. It outcompetes native plant species for resources such as sunlight, space and nutrients. [...] The volunteer scheme is open to all GWT WilderGlos users who have a smartphone and can download the Crowdorsa app, where they can then earn up to 25p per square meter of Balsam removed.”

6. [Fish & Wildlife] Service Provides Over $14 Million to Benefit Local Communities, Clean Waterways and Recreational Boaters

“The U.S. Fish and Wildlife Service is distributing more than $14 million in Clean Vessel Act grants to improve water quality and increase opportunities for fishing, shellfish harvests and safe swimming in the nation’s waterways. By helping recreational boaters properly dispose of sewage, this year’s grants will improve conditions for local communities, wildlife and recreational boaters in 18 states and Guam.”

7. Bornean clouded leopard family filmed in wild for first time ever

“Camera traps in Tanjung Puting National Park in Indonesian Borneo have captured a Bornean clouded leopard mother and her two cubs wandering through a forest. It's the first time a family of these endangered leopards has been caught on camera in the wild, according [to] staff from the Orangutan Foundation who placed camera traps throughout the forest to learn more about the elusive species.”

8. Toy library helps parents save money 'and the planet'

“Started in 2015 by Annie Berry, South Bristol's toy library aims to reduce waste and allow more children access to more - and sometimes expensive - toys. [...] Ms Berry partnered with the St Philips recycling centre on a pilot project to rescue items back from landfill, bringing more toys into the library. [...] [P]eople use it to support the environment, take out toys that they might not have the space for at home or be able to afford, and allow children to pick non-gender specific toys.”

9. Chicago Receives $3M Grant to Inventory Its Trees and Create Plan to Manage City’s Urban Forest

“The Chicago Park District received a $1.48 million grant [“made available through the federal Inflation Reduction Act”] to complete a 100% inventory of its estimated 250,000 trees, develop an urban forestry management plan and plant 200 trees in disadvantaged areas with the highest need. As with the city, development of the management plan is expected to involve significant community input.”

10. Strong Public Support for Indigenous Co-Stewardship Plan for Bears Ears National Monument

“[The NFW has a] plan to collaboratively steward Bears Ears National Monument to safeguard wildlife, protect cultural resources, and better manage outdoor recreation. The plan was the result of a two-year collaboration among the five Tribes of the Bears Ears Inter-Tribal Coalition and upholds Tribal sovereignty, incorporates Traditional Ecological Knowledge, and responsibly manages the monument for hunting, fishing, and other outdoor recreation while ensuring the continued health of the ecosystem.”

June 1-7 news here | (all credit for images and written material can be found at the source linked; I don’t claim credit for anything but curating.)

[kaetastic]

PLAY ALONG

pairing: Sodo Ghoul x Ghoulette!F!Reader

summary: After debutting not so long ago, the fans seem to adore the new addition to their beloved band. However, after noticing how their fans react to their interactions- Sodo and Y/N test the waters to make their fans go feral.

word count: 1.2k+

warning: tension TENSION SEXUAL TENSION!!!

note: i've noticed the lack of reader being a part of the band so you know what TAKE THIS! also i love you phantom but this position is MINE!! (for this story lol) p.s i took 2 hours to write this because i was so excited and was on a GRINDD

"Dust." Papa's deep voice shook the venue, the vibrations flowing like waves from the source of the sounds into the thrilled crowd. With a microphone in his hand, the man who had the blinding sequined blue jacket pranced across the stage. The spotlight followed every movement he made, shining upon him as if he were a revealed prophecy.

Screams erupted from the crowd as they held their phones high up from the crowd- ready to capture moments from their favourite ghouls and ghoulettes. However, this night had been different since the few previous shows had sparked a new trend. Pupils and phone lenses were glued onto the lead guitarist who had been ripping his infamous white guitar while others stayed on the ghoulette who strung her black one.

There was excitement in the air that was missing from the tours before. It wasn't grand but it definitely felt significant. And oh, was that excitement going to explode. Bodies were jumping as Papa thrust his hips, his voice growling out, "In God you trust."

Swiss moved further into the stage and those closest to him let out high-pitched yells. Even though both parties knew there was no point in trying to make contact due to the large gap between them, there was always an attempt because the veins on the man's arm were irresistible.

"Your cavalier of crapulence, to this feast of rapacity."

If it wasn't loud before, now it was boisterous. Sodo's fingers were moving on their own- a result of countless practices, while his body shuffled over to the ghoulette.

Y/N or Raven (as she was known) had her lips pressed together as her mind was solely focused on giving a satisfying performance. Papa's voice bounced through her earpiece and her body obeyed the music and played the right chords. Despite the sudden incline of screams, she kept her gaze on the crowd with a smile. Playing an instrument was one thing, but serving a good performance for the crowd was another. Knowing that fact, she shouldn't have been surprised when she felt another body pressing her back.

Her mind needed a second to process who it was but her body was on its own journey. Not even a stagger in her performance. Throwing her head over her shoulders, she was met by the same mask encapsulating her head. The fans noticed how close their bodies were and more screams erupted from the front to the back of the venue.

"In God you trust."

With his other arm free, he placed his hand on her waist. It descended, following the curve of her body before he yanked her back to close the gap between them. Masterminds- that's what they were because everyone had been enamoured by the two. Phones from all the way back were faced in their directions, possibly recording the hundredth clip of that night.

After the recent shows, Y/N and Sodo had picked up how the crowd had loved when they were close to one another. So in a genius fashion, they both decided to interact more on stage.

Even though the light fell onto the back of their heads, shadowing the front of their masks, few realized the way Y/N had opened her mouth in shock at Sodo's action. They scrambled to open whatever social media they favoured, not bothered by the fact that their phone was holding onto the last bits of battery. Later on, the duo would find the clip to pull in more interested fans with their electrifying chemistry.

Leaning her head back to rest on his shoulder, Y/N realized something. Noises came from every angle. The sounds that were trapped by the large room bounced off the walls, wrapping around the people under its roof. Despite all this, she could clearly hear his heavy breathing. The man wasn't running around the stage, so why was he?

Then a smirk played on her lips. When they discussed their little plan, Y/N knew there would be rumours about the two but in any good marketing, denying those rumours would not be beneficial at all. She also knew that there would be other... feelings involved. Feelings that would be more apparent on him than on her.

Angling her lips towards his, she leaned in but not exactly closing in. Screeches blew up and a smirk played on her lips at her success. She breathed out onto his lips, "You hard?" Oh, the things she would do just to see his eyes beneath those opaque goggles. Sodo felt his body still behind hers. He was incredibly thankful that most of his face had been covered apart from his lips because his face gave away everything. His tongue flicked out to wet his lips at her question. So many things to be thankful for tonight. Especially to the guitar that covered the most telling parts.

Cirrus' part was up and Y/N pressed a hand on Sodo's chest to push him away. Making her way to the other side of the stage, she stood close to the edge, her feet perched on the blasting speakers. Unbeknownst to her, the same figure that was behind her had been trailing after her like a lost yet love-sickened puppy seeking attention. She should have known when phones were angled behind her.

With his hand free again, Sodo pushed his guitar to rest beside him, his front now free from the protection of the instrument. A small gulp swam down her throat once she felt something prodding her back. Lord. Placing his hand on the bottom of her neck, he ground his teeth as he brought it up to fully grasp it.

Another thing to be thankful for- no one had heard the silent moan that left her lips. Just for him.

"Very." Sodo gave a late reply.

"And divine you feel my thrust."

The ghoulette smirked at the coincidence of the lyrics for that moment.

"In God you trust."

Papa's thrusting towards the crowd caused strings of screams, and bubbles of excitement were waiting to burst out. The crowd was ready for the confetti. On the other hand, Sodo fans had their phones angled to capture his routine for Mummy Dust. This time... everyone knew that something would be different.

As the drumming got louder, Sodo ran his left down from Y/N's mouth to her neck- stopping above the curves of her chest. Just for a moment, a small part of her cursed him out for not going further down. Wrapping his fingers as if he was jacking off the air, Sodo had his head thrown back. He wished he was doing the exact same thing to himself right now.

The ghoulette turned her body to face him. His eyes changed course to watch as her hands slowly trailed down his chest. The fans were exhilarated at the sight, screaming at the sight of the pair they liked so much. Sodo felt his heart beat at its own hastened pace while the rest of his body was vibrated by the stage. His heart skipped one single beat. Y/N got on her knees with her eyes on his black lenses. She swore he had gulped when confetti was shot out onto the crowd.

This was definitely going to be awkward to talk about later.

[358jours]

Yanqing x GN!Reader⎢But I’m so ‘eepy

Word Count⎢1300

Genre/Tags⎢SFW, fluff, Reader is a big introvert and is sleep deprived, shopping dates, PDA, written and posted before game launch⎢Crossposted on AO3

You stifle another yawn as Yanqing drags you around. You’re holding hands, fingers laced together. He walks ahead of you, loud joy in his steps. He’s almost always sporting a smile in public, but the happiness radiating off of him right now is something else. He forced you out of your room today, and though you love his presence, your social battery can only last so long. At this point, you’re practically dead weight he’s carrying on his own.

Yanqing is an energetic young man, extroverted, optimistic, though perhaps a bit naive. He enjoys anything that has to do with swords the most such as taking care of them, training, competitions. He’s also a big spender on his hobbies, always ending up begging his father –or even you– to finance his basic needs. Many people are aware of who he is due to all that, and also the fact he’s the lieutenant. 

You are the opposite. An introverted soul, sleep deprived, fond of staying inside. You tend to stay up far too late into the night, kept up by good video games, and bad decisions. “I can still play, like, fifteen minutes more”, cue three am beeping on your alarm clock after hours passed unnoticed. You could count on one hand those aware of who you are too. First General Jing Yuan, the leader of the Luofu himself, then an unnamed accountant, whose existence only matters for a single reason (your pay), and Yanqing himself. Perhaps Marshal Hua might count as well as she knows about everything, but you never met her personally. 

Yanqing is the only person able to drag you out of your room for more than an hour, and the only person able to drag you out outside at all. Perhaps ‘drag you out’ is too strong a word as you always consent to going out with him, but your mood is a bit sour from your dead social battery and the fatigue in your body. As far as you’re aware, everyone on the Luofu market street has dubbed you “Yanqing’s sleepy partner” (You can’t really blame them, it would be quite awkward to ask “so what’s your name?” while your self-proclaimed knight in shining armor is right by your side). You have a very “cat and dog” personality contrast that makes people laugh, opposites attract or so they say. 

.

Yanqing pulls you forward amidst the crowd. “Finally, we’ve arrived at the Artisanship Commission!”

You take a moment to take in the sight. The sun is high, barely two in the afternoon, and illuminates the red city radiantly, this shop as well. The view is beautiful, yes, but honestly your mind is so jaded, it’s hard to grasp reality. Hopefully this is the last stop for today, Aeons know you won’t survive if you don’t get your afternoon nap. You hear Yanqing's voice and– oh he’s talking to a vendor, nevermind. They seem to know each other, by the way they laugh at least. 

You look over to the swords on display. They’re all impressive, a vast range of different colors and sizes. The one you like best is mainly clear blue and has a yin-yang on its guard, it looks pretty though perhaps a bit heavy for Yanqing? The second one is thinner, it’s mainly black with white and blue accents. It would look good in his hands. The one beside it is ew full-gold yellow, and though the color is less than attractive, the details forged on it are stunning. 

You don’t notice the vendor handing Yanqing a sword. He lifts the hand you’re holding, and looks at you curiously. You let go sheepishly to which he only smiles. The vendor giggles. Ah, embarrassing. 

You space out once more while Yanqing listens with grand attention to the explanations about the ki-controlled attacks the sword can perform. You’re kind of staring at him as he tests the sword through different movements, touching the blade with the tip of his finger. It looks alright, but the swords on display are prettier. He hands it back, the vendor leaves for a moment, and comes back with another. The same happens, and again, and again, and you feel your legs more and more. Trying not to yawn becomes harder and harder.

Your interest is peaked when the vendor brings him the sword with the yin-yang guard. They talk about the features again, he moves it a bit. He hums, does bigger movements, it seems he likes this one too. You rest your head against his shoulder “I like this one.” 

He shifts his head slightly. “Really?” 

“Yeah. It’s pretty and it goes well with your outfit. You should take a dark gray scabbard to go with it.” 

Yanqing hums. He looks at the sword one last time before handing it back. “Alright, I’ll take two, and two dark gray scabbards.” 

The vendor looks very surprised, but happily obliges. They shuffle, occupied in preparing his purchases. Your partner sports a smile on his face, his happiness showing through his proud stance. You don’t fight your yawn this time, and close your eyes. You open them soon after at the sound of a pathetic whine and your name however. Yanqing’s face is contorted in dread. You’re a bit confused about what is wrong, your mind foggy— oh. 

.

His wallet is completely empty. 

You laugh loudly, which makes him even more embarrassed. “Hey, come on! How am I supposed to pay now? And I already said I was taking it home too…” But it only worsens your fit. You grip onto his arm to not fall. The vendor comes back, and Yanqing hastily hides the hollow pouch. He looks at the vendor worriedly as you continue laughing against him. 

“You two are adorable together. Mind repeating your joke?” The vendor smiles at you both. 

“Yeah, thank you. Uh.” Yanqing let out an embarrassed laugh as he scratched the back of his neck. 

You recover enough to hand your credit card to the vendor. “He forgot his money at home.” Yanqing stutters as the vendor snorts. You’re handed back your card, and your partner receives his new swords. He carries them with his left arm while his right hand is occupied, as he refuses not to hold hands with you whenever you are out. 

You walk together for a bit, saying nothing. He’s not dragging you everywhere like before anymore, thankfully. The sun is still high, but at least forty minutes have passed, if not more. Yanqing is the first to break the silence, “You should name it, the sword. But it’s important so you should think deeply about it, yeah?” 

You hum, your mind occupied by other priorities. You pull him in a direction. “Nap time.” 

“What?!” He’s taken aback, clearly confused and in shock. “No way I’ll let you name it that!”

You pull him again and— push him to sit on a bench? He’s still lost, looking at you for clarification. He’s by the far side while you go sit in the middle. He’s about to ask more when you suddenly lay down. Your head goes to rest on his lap. “Nap time, wake me up in one hour or if it starts raining.” 

Yanqing opens his mouth and closes it, still confused although now flustered. “Really? Right here, right now? I thought you disliked being in public.”

You hum a bit, shifting, making yourself comfortable on the hard bench. It would take longer than one hour before getting sunburned right? So this is probably fine. Between the sun high in the sky, the soft breeze, and the comfort of Yanqing, you don’t think you’ll have much trouble resting in public. “Bed is too far, and I’m so ‘eepy.”

He huffs, although there’s a smile on his face. “Alright.” 

[slytherinshua]

YOU, CLOUDS, RAIN

summary. tws coming home after a tiring day. genre. fluff/comfort. headcanons. warnings. just a lot of exhaustion. food mentioned in almost all of them and brief mention of crying in hanjin's. not proofread. pairing. tws x reader. wc. 714. request. requested by @xmhaoluvr!! a/n. these boys literally deserve the world. also this is literally what i need after today (i did nothing but still exhausted) lmfao 😭😭😭

SHIN JUNGHWAN ﾐ 신정환

Junghwan would still be in leader mode after a long day. As soon as he gets home he’s already asking you if you’ve eaten or need anything, and you’d have to tell him to slow down and rest. After waking up at the crack of dawn, performing all day, and having to keep track of all the members, he’s so exhausted. He forgets that home is the place where he can just relax. You’d help him unwind, making sure he takes a nice bath and eats a good dinner before cuddling up in bed. He feels so relieved that he has you to rely on, because for the entire day, everyone else was relying on him. 

KIM DOHOON ﾐ 김도훈

You could tell Dohoon was extremely tired the second he walked through the door. He falls completely on top of you. He doesn’t want to talk about it, all he wants is to fall asleep in your arms. You help him relax and massage his muscles if he’s feeling really sore. Once you make sure that nothing really bad had happened (he just missed you a lot and was super tired during his schedules), you’re happy to call in for the night early. Making sure that all your attention is on Dohoon until he falls asleep, even if you aren’t tired enough to sleep just yet. Him getting rest is what is most important to you.

CHOI YOUNGJAE ﾐ 최영재

Youngjae is usually so calm and gentle, but after a long day testing his patience for hours, he’s already past his limit once he gets home. He knows that if he tries to talk to you, he’d most likely say something he didn’t mean. So instead of letting you help him with food or a bath, he goes to shower by himself, leaving you in the bedroom to wait for him. He takes an extra 20 minutes in the shower just unwinding after the exhausting day. He feels so much better once he’s out of the shower, having cleared his head and worked the knots out of his body. He’ll want to get his fill of kisses before he falls asleep, relaxing further to your comforting scent. 

HAN ZHEN ﾐ 韩振

Hanjin is so relieved to be home after a taxing day, he’d most likely cry as soon as he’s back in your arms :( He definitely needs sleep, but more than that he wants to get as many hugs and kisses as he can. He refuses to sleep until you’ve completed your usual nighttime routine, involving skincare, matching pyjamas, and cuddling while watching a drama episode. He definitely starts dozing halfway through the episode because he’s so tired </3 But you would make sure he’s comfortable wrapped in your arms, not minding that you’d have to rewatch the episode again another day. Him getting rest is what is most important, and it warms your heart that he only wants to do it in your arms. 

HAN JIHOON ﾐ 한지훈

Jihoon crashes like no one else the minute he steps inside. He’s always trying to keep his energy up for everyone else the entire day that once he gets home it’s like his battery fully died. His eyes were already threatening to close as he took off his shoes, and you would have to keep him awake enough to eat and shower before he falls asleep. If he falls asleep on the couch before making it up to bed, good luck dragging him up there because he’s not waking up. You’d have to get him an extra blanket and make sure he’s warm and comfortable so that he doesn’t wake up in pain.

LEE KYUNGMIN ﾐ 이경민

Kyungmin always works so hard during the day that by the end of it, his brain has logged out. I think his tiredness would make him easily distractible, so while he’s eating he would zone out at one spot or forget to blink. You would be asking him questions, like if he wants you to run him a bath or if he needs anything else, but his brain wouldn’t even be able to process it. He’s sheepishly telling you that he’s fine, but you can tell he needs sleep so bad. He feels bad for how disoriented he is, but you assure him that you don’t mind and him getting sleep as soon as possible is most important.

↳ tws taglist (bolded could not be tagged): @eternalgyu,, @seunghancore,, @sobun1est,, @talkingsaxy,, @50-husbands,,

@hursheys,, @imyuna-06,, @kristianities,, @stannwjnss,, @nonononranghaee

[carolperkinsexgirlfriend]

Steddie Upside-Down AU Part 81

Part 1 Part 80

Eddie’s hand is clutching tight enough on Will’s shoulder to hurt, but Will barely notices because Eddie’s sniffling behind him. He can hear it in the way he’s swallowing it down, breath hitching. Will reaches up to clasp Eddie’s hand on his shoulder, not looking away from Steve.

“What do you remember?” Will asks, hoping Steve will say something, anything to prove he’s still in there somewhere. 

Steve’s eyes unfocus, like he’s really focusing, trying to pull memories out of his head and coming up with air. There’s no sound in the tight room except Eddie’s breath hitching, the eyes of Dr. Owens, Uncle Wayne, and Will all trained on the same target.

“I remember they hurt me,” Steve says, still unfocused.

Will shifts, looking behind him at Dr. Owens with a glare. “You mean the tests?” Will asks, thinking about how uncomfortable blood draws are, and how much more they might do to someone possessed and unmonitored by a loving parent. How much worse would it be for someone who’s memory has slipped out of their ears and no longer contextualizes the harmlessness of the needle. 

Dr. Owens isn’t smiling anymore. He looks grim as he meets Will’s eyes, no congenial twinkle to be found. 

“No, the soldiers,” Steve says.

“Someone hurt him?” Uncle Wayne asks, glaring past Will to where Dr. Owens is standing. 

Dr. Owens starts, “Now, wait a mi–” before Steve talks right after him in that same, lifeless voice. 

“They shouldn’t have done that. It upset him.”

They all know who “he” is, but Uncle Wayne still asks. “Who’d it upset, kid?” He sounds gruff, unaffected, too much a man’s man to let it show, but when Will looks up at his face, his eyes are just as wet as Eddie’s. He looks back to Steve quickly, wiping his own tears as they well.

It’s like Uncle Wayne crying is what makes this real. Eddie always has big emotions and big reactions to them, getting caught up into the dramatics of any given moment like he’s acting out a scene. 

But Wayne? Wayne’s solid. Sturdy. Dependable. And he’s crying. 

Steve doesn’t answer. 

He doesn’t say anything else at all, just settles into his bed and lets them perform more tests, the same battery of them. 

Then, a new test, one he’s never seen before. A familiar vine in a box, a flamethrower, and Steve’s steady heartbeat. 

Almost immediately, Steve’s heartbeat kicks up, echoing around the room as the scientists turn on the flamethrower and light up the vine. 

It writhes in its little box. Steve sits still in his bed. 

“Do you feel that?” Dr. Owens asks.

Steve nods, holding his chest, like he can feel it there.

The vine catches fire and Steve writhes in his little bed, heartbeat kicking up until it’s almost deafening in Will’s ears. 

“Turn it off!” Eddie demands, running up to Steve like he wants to hold him down in a macabre reenactment of what they’d done in the pumpkin patch. “Now!”

They don’t, until Dr. Owens echoes the orders. 

Steve goes still. 

It doesn’t connect, what happened to Steve, until the vines been wheeled out of the room, adults trailing after it to talk away from children’s prying ears. But, it’s too late. They already know. It doesn’t matter how much retroactive protection they want to provide, it’s already connected. 

The soldiers hurt the vines. The soldiers hurt Steve. The scientists burned the vine and Steve writhed. 

They’re connected, Steve and the things that haunt the Upside-Down. Can’t hurt one without the other. 

But, why Steve?

They’re all connected, he can feel it still, flickering and ashen, but there. So, why not him? Or Eddie?

Why is it always, eternally Steve?

For the first time, Will wonders if Steve might not make it this time. Big, strong Steve, who’s back he’s more familiar with than his face. Who’s always going first through doorways, toward danger, to make sure it’s safe. What happens when that back bows and breaks?

What if he doesn’t make it this time? Will that tether flicker and go out? 

Will Will and Eddie go out with it, connected to the last?

Even as he stares at the stranger wearing Steve Harrington’s face, Will hopes so. 

He holds Eddie’s hand and waits with him for the adults to make more decisions about the minutiae of their lives. 

Part 82

Taglist: @deany-baby @estrellami-1 @altocumulustranslucidus @evillittleguy @carlprocastinator1000 @1-8oo-wtfbro @hallucinatedjosten @goodolefashionedloverboi @newtstabber @lunabyrd @cinnamon-mushroomabomination @manda-panda-monium @disrespectedgoatman @finntheehumaneater @ive-been-bamboozled @harringrieve @grimmfitzz @is-emily-real @dontstealmycake @angeldreamsoffanfic @a-couchpotato @5ammi90 @mac-attack19 @genderless-spoon @kas-eddie-munson @louismeds @imhereforthelolzdontyellatme @pansexuality-activated @ellietheasexylibrarian @nebulainajar @mightbeasleep @neonfruitbowl @beth--b @silenzioperso @best-selling-show @v3lv3tf0x @bookworm0690 @paintsplatteredandimperfect @wonderland-girl143-blog @nerdsconquerall @sharingisntkaren

[darl-ingfics]

Sicktember Day 11: ALT - "I didn't mean to wake you up."

Fandom: Seventeen

Sickie: Vernon (stomach flu), Joshua + Dino (regular flu)

Caregiver(s): Joshua, Dino

Word Count: 1,953

As he trudged through the door of the dorm behind the rest of the hip hop unit, Vernon believed he had never truly felt this tired before. The week had been excruciatingly long. Seventeen had been asked to attend a collaboration stage with a handful of other artists on Saturday, which had been derailed when over half of them had gone down with the flu. Or, to put it more specifically, two separate flu viruses that had assaulted them from all sides. No one had thought much of it when Seungcheol had made the decision to send Seokmin home on Monday with a cough and low-grade fever, and still didn’t after lunch when Mingyu barely made it to the trash can before throwing up. It was overwork, exhaustion. Or at least it was until Seungcheol had to run out of the subsequent meeting with their management team to avoid throwing up in the room with them. It was at that point that everyone (members, managers, EVERYONE) realized something bigger was going on, and subsequent tests revealed that, while all three members had the flu, the virus infecting the two rappers was different from the vocalist. 

But that hardly mattered when everyone knew they were in for a rough week.

The group had been picked off one by one until only five healthy members remained on Friday: Jeonghan, Soonyoung, Wonwoo, Seungkwan, and Vernon. Their managers considered cancelling their appearance on Saturday, but Jeonghan (acting leader) and Hoshi (actively leading also) had convinced them to just send BSS, since both Soonyoung nor Seungkwan had been spared thus far, and Seokmin, as one of the first to get sick, was starting to turn the corner and argued he’d be healthy enough to get back out there if they pumped him with meds the morning of. They had, of course, been taking measures to keep the last healthy members as germ-free as possible. So their managers reluctantly agreed. But their hopes were ended with Soonyoung throwing up at 2am Saturday morning, and Seungkwan spiking a fever at 7. And because it was too late to back out now, the group chosen to represent Seventeen had been the hip hop team, since neither Seungcheol nor Mingyu had thrown up for 48 hours, and Wonwoo and Vernon hadn’t been sick at all.

The performance had been perfect. There was nothing better than sharing the stage with their colleagues, combining talents and seeing their fans eat up the interactions. 

What was less perfect was the dull throbbing assaulting Vernon’s brain. As each song wore on, it became harder and harder to ignore the pounding in his skull, the pulsing at his temples. He started to feel claustrophobic in his own skin; the sweat pouring down his face, sticking his hair to the nape of his neck, adhering his clothes to his body, was agonizing. 

Even more agonizing was that Vernon immediately knew he was getting sick. There was nothing he could do about it now. Except pray he hadn’t caught the stomach bug. 

Thankfully, the rest of his bandmates didn’t seem to pay much mind to his listless silence on their journey home. Wonwoo was usually quiet after performances, recharging his social battery, and the other two clearly weren’t back to a hundred percent yet, so everyone was mercifully quiet and lost in their own thoughts on the drive back. Vernon certainly appreciated their distraction to hide his own condition, but at the same time, he had nothing to distract him from the growing pressure in his abdomen. But he could, and definitely was, owing that to the placebo effect. 

When they arrived home, they were met by a welcoming party in the living room. 

“Hey superstars!” Jeonghan smiled brightly from his spot on the chair with Chan wrapped around his abdomen, (Vernon didn’t have the energy to figure out how Chan was doing that, but knew that an unwell Chan wanted nothing more than to curl into one chosen hyung’s body and not let go, so he figured physics didn’t apply to him.) Jun waved from one of the couches, but the effect was dimmed since it was only one hand waving from around Minghao’s head, as the younger dancer was slumped against Jun’s left shoulder while Jihoon’s head was pillowed on his right thigh.

At Jeonghan’s words, Soonyoung’s head appeared from the back of the other couch, hair smushed up and face red with the pattern of the throw pillow. “How’d it go?”

Seungcheol chuckled adoringly, rubbing Soonyoung’s cheek. “Fantastic.” The dancer captain nodded contentedly before falling back against the couch. Vernon smiled in spite of the horrible feeling in his gut, moving quickly away from his members to escape into the void of sleep. If he could just fall asleep right now, maybe he could avoid the inevitable. 

As Vernon hurried to his room, his feet automatically stopped outside a closed door. There was only one thing he wanted as much as, if not more than, sleep. Vernon considered the handle carefully, then tapped twice. There was no response. So he pushed it open. The hall light fell on the bed, on a deeply asleep Joshua’s arms already wrapped around Seungkwan. Vernon’s heart sank. Both of them looked so peaceful, yet so obviously ill, so in need of this sleep. Vernon wasn’t selfish enough to take the few steps to awaken his chosen comfort person. He closed the door with the gentlest click possible, and scurried to his own room, rubbing tears out of his eyes with a mix of frustration and embarrassment. 

***

Vernon had been able to sleep for all of an hour before his body decided enough was enough. He awoke to the worst pressure he’d ever felt in his abdomen, a tangled, cramping pain as if there were a monster writhing beneath his skin. His head was pounding worse than before. His skin was clammy and sweaty and too tight. He was going to throw up. And soon. 

There were no memories between the moment he woke up and the moment he was in the bathroom, emptying the contents of his stomach. In fact, Vernon would very much like to not be present in this moment at all. The churning in his stomach, the horrifying, acidic feeling of bile in his throat, the loss of control, the desire to instantly clean everything… Vernon would rather suffer anything else than vomiting. 

He had no idea how long he’d been in the bathroom, how many times he’d lurched over the toilet, when a hand, ever-so-gentle, was placed on his back, right between his shoulder blades. And, try as he did, Vernon couldn’t stop his muscles from tensing, an automatic, uncontrollable response of ‘get the fuck off me.’ A sign that his body knew exactly what it wanted and would reject anything else. 

And his attempted comforter knew it too. The hand withdrew, only to be replaced by the softest of grips on both of his shoulders as Chan’s voice whispered in his ear, soft as honey: “It’s okay. I’m getting Shua.”

As Chan’s soft footsteps retreated, Vernon hung his head in defeat and felt tears threatening. This was the very last thing he wanted, to be a burden to others. Now he’d likely insulted and hurt Chan by rejecting his help, and Chan was going to wake Joshua, who was also sick and needed his sleep, and the roiling of his stomach had yet to stop, and both Joshua and Chan would probably stay up to take care of him, which was the worst possible outcome in all of this, not to mention how horrific his entire body was feeling at the moment, and…

Vernon’s brain stopped completely when gentle hands wound around his abdomen, and he was enveloped in a cloud-soft hug from behind. The contact, the only thing his body wanted, opened the floodgates that had threatened for the past hour, and he let out an unrestrained sob.

“Oh, sweetheart, what’s wrong?” Joshua asked, his grip tightening ever so slightly to calm the sobbing without upsetting the rapper’s fragile stomach. 

“I don’t feel good,” Vernon cried. 

Joshua clicked his tongue. “Oh, Sollie. It’s gonna be okay, baby.” Vernon sobbed again, falling back into Joshua’s arms. “Have you thrown up?” Vernon nodded. Another sympathetic tongue click. “I know you hate that.” One hand left Vernon’s stomach and pushed his hair back from his forehead. The other stayed firmly in place over his abdomen, the warmth already soothing the pain there. Vernon closed his eyes as he nodded again. “Think it’s gonna happen again?” Instead of nodding, Vernon’s face screwed shut with another round of tears, prompting Joshua’s finger to smooth over his cheeks. “Oh, sweetie, I know. I know. It’s gonna be ok-ay…” The elder broke off coughing, leaning away and retracting his hand to bury his face in his sleeve. Vernon whined against his will as Joshua’s fingers left his face, and his eyes swam with new tears, this time with guilt at his selfishness. It was only a moment before the fingers were back in his hair. “Sollie, it’s okay.” 

“I’m sorry…”

“Hey, hey, none of that.” 

“You shouldn’t be here…”

“Honey, please…”

“Hyung, you’re so sick too, I can’t…”

Joshua’s hands cupped Vernon’s face, gentle but firm. “Chwe Hansol, listen to me. It is one in the morning. You are in a heap on the bathroom floor, throwing up, which is something you fear with a burning passion. You need to focus on you. I will be fine. I am going to sit here with you until you are ready to go back to bed, and then I’m gonna stay with you until you fall asleep. Got it?” 

Vernon’s answer was to collapse forward against Joshua, face buried in the older man’s shoulder and arms scrambling for purchase around his waist. Joshua couldn’t wrap his arms back around him fast enough. 

They had been sitting like that, Joshua rocking them back and forth, for an indefinite amount of time when Vernon heard a whispered, “How can I help?” He squirmed enough to see that it was Chan, leaning in the doorway, looking incredibly young. Vernon felt like crying again for rejecting the younger’s help earlier. 

“Can you grab us a water, please?” Joshua replied quietly. “Maybe a damp towel too?”

“Of course.” The younger man sprang forward, pulling a clean wash cloth from the cabinet below the sink and dowsing it with water. He handed the cloth to Joshua before disappearing into the hallway. 

“Okay, love, I need to sit back just a bit, there we go.” The older man pressed the damp cloth to Vernon’s forehead, smoothing the damp material across his overheated skin, cradling both cheeks and the nape of his neck. Vernon’s eyes slipped closed. 

“Thank you, Shua,” he slurred. 

“Anytime, love.” 

Vernon didn’t realize he’d fallen asleep sitting up until he was jostled awake, hands tugging at both of his arms to try and stand him up. He pushed himself to his feet, only stumbling a little bit as his knees shook from sitting on them too long. His supports (Joshua and Chan, of course), wrapped his arms around their shoulders as they led him back to his bed. Vernon crawled under the waiting covers, his entire body sighing with relief at the soft surface of his bed after the cold discomfort of the bathroom floor. He settled further when he felt Chan slide into the bed against his back, Joshua climbing in on his other side. 

This was all he’d wanted. Warm and content, safe with his best friends in the entire world, Vernon let sleep pull him under once more. 

[nurse-floyd]

F1 and Biometrics

Biometric gloves came into play in F1 in 2018 to give medical teams immediate access to important information regarding driver conditions after an incident. It allows for vitals to be measured before, at the time of an incident and after the crash until they are rescued and more advanced monitoring is able to be applied. It is also a big help if a driver is involved in a crash that means they are not accessible straight away or cannot be visualized for monitoring so this allows teams to get immediate access to this information.

According to the FIA website, this was a difficulty by medical teams when Carlos Sainz crashed in the 2015 Russian GP where he hit the barrier head-on at 153km/h (roughly 95mph). The first row of the barrier was resting on top of him, so medical teams had to wait for this to be removed before they had access to him. Thankfully he wasn’t hurt during this crash, but medical teams didn’t know this initially as this technology wasn’t available and being used.

The sensors were basically made custom to F1 drivers. Regular sensors had not been fire tested and were not comfortable enough for the drivers to wear for long races. They use Bluetooth technology and can send data within a 500m and are powered by a small battery that drivers charge before races.

Drivers gloves have a 3mm sensor that is stitched into the palm of the fabric and monitors their vital signs during races. They measure pulse oximetry which measures the amount of oxygen being carried in the blood as well as drivers pulse rates. Obviously if a driver has an injury that is affecting their breathing, this will show in the saturations that would decline rapidly. Having this technology allows physiological readings and biometrics to be continuously monitored throughout the race from start to finish. Data from the sensor transmits to an iPhone app and gives medical crews remote and advance information on the driver’s condition. The small biometric readers are flexible and fire resistant up to 1,800 degrees Celsius (3,272 degrees Fahrenheit) for 22 seconds.

In the future there are even plans to implement sensors for respiratory rate and temperature to further monitor drivers which will not only enhance safety features but allow teams and drivers to monitor performance better.

OMP, an equipment supplier, has been developing wearable biometric monitoring systems since the introduction of the biometric sensors in 2019. An undershirt equipped with sensors and a measurement unit would transmit and record biometric data allowing for real-time monitoring of health through ECG and thoracic expansion. This would allow monitoring of drivers heart rhythms and breathing rate which would not only benefit medical teams in the case of an incident but also help identify stress, fatigue and any alteration in conditions. This would be useful considering the amount of stress drivers have been put through in the past in hot countries for example Saudi Arabia GP 2023 when many drivers retired, had to be taken to medical, threw up in their helmets or passed out after the race.

TV crews can also display biometric data during broadcasts to show the physical condition of a driver as they battle on track. However, there have been questions about the ethics and use of biometrics and why can’t we as an audience see drivers heart rates etc on screen if this data is being constantly collected. The FIA has strict guidelines about the use of raw biometric data. Section 2.4 of the FIA Guidelines for the Collection and Usage of Biometric Data in Motorsport, states that the use of biometric data can be used for more than just medical and performance monitoring and can be used for entertainment and marketing purposes but only if it is changed from raw data into a variable to protect the private health information of the driver. The FIA won’t allow the use of biometric data to be publicly available in the original form/ measurement unless the driver provides informed consent.

Essentially, driver onboard vitals are likely not to be available live due to strict laws on data protection and sharing health related information about drivers as it is protected health information. In the case of an accident or emergency, data is not allowed to be used even if the information is changed to protect the driver unless it is for medical and rescue use and post-accident information.

Sources: (x) (x) (x) (x) (x)

This also led me down a rabbit hole and found another study (it was anonymous but if you’re a sleuth you can probably take a guess at what F1 driver it was) where they monitored his heart rate during qualifying to see what his average was throughout the race to test the cardiovascular strain F1 drivers are put under!

[windvexer]

Chickens Have a Prey Drive: the tiny velociraptor's peckables for protecting the coop

A list of stuff I believe about protections and all such, written in the style of the evil overlord list, which I have been fond of for two decades. Take what you like, leave the rest behind.

|. The best time to make protections is before you need them. The second best time is when you need them.

You can make a wide variety of protections ahead of time, whether or not you think you'll ever actually need them, and then learn to "pause" or "lay down to bed" the magic until you ever need it. This provides ample practice in not only spellcasting, but also in magical validation, and learning to pause and restart ongoing spellwork.

2. If your general protections fail, make specific ones.

3. Unless you have specific information that a failed ward was already out of energy when its boundaries were tested, recharging it is probably not going to fix your problem.

4. Protections change things. If you create a protection and it changes nothing about your life, it probably was not cast well.

If you created a protection against advertisements, something about your life should change. The wifi goes down and you can't go on the internet. Someone reblogs a post explaining how to install adblockers. Something happens every single time an ad comes up on screen, thereby distracting you. Where once you slavered with rage at advertisements, now you barely notice them and feel emotionally numb when you do. Etc.

A corollary to the above rule: if you need a way to verify preventative protections against things that are already not happening, use your same spellcasting techniques to make protections against things that are already happening, and see if you can get them to stop.

5. Protections using only "visualization" without energy work, spellwork, prayers, petitions, magical sacrifice, or other forms of metaphysical empowerment, are often ineffective/inert. This is because imagining things really hard is not automatically an act of magic.

Conceptualize visualized energies as being empty shells that then need to be filled up with some kind of metaphysical power. They hold a little energy on their own, but without being solidified, they will fade away over time.

6. It's possible to empower protections only with your personal belief or faith that they will work. But this is a bad idea for most people.

Willpower is not infinite. At a certain point, it runs out. Willpower runs out faster if you use a lot of it. The "batteries" of any spell drain faster when that spell is actively being used, I.E., protections run out of energy faster when they are being tested. Building a spell that relies on your personal willpower to protect you means that you are betting you will have enough willpower during a time of high personal stress to keep the protection going. Not only that, but metaphysically speaking, it is completely possible for the strength of your personal willpower to simply be weaker than whatever it is you want to protect against. (Shout out to the energy suns who have no idea what I'm talking about)

7. Ask for help when you need it.

Please note: this does not say engage in a formal petition ritual, or pay spirits for services, or whatever. It says what it means: ask for help. Ask your gods, spirits, and ancestors. Ask the house and the trees. Ask the sky and the grass. Ask your stuffed animals and your old spell vessels. Ask grace itself. You do not need to know their names. You do not need to have an ongoing, perfect, healthy relationship beforehand. Just ask.

8. Depending on how you're doing it, cleansing and banishing are not the same thing.

9. Powerful and effective protection spells can be performed with one (1) correspondence.

There is a time and place to make elaborate oils using 13 consecrated ingredients, and that time and place is after you've dealt with this current spiritual emergency. You can spend those new XP points earned in combat on leveling up your badass premade potions. Addendum to the above rule: the one (1) powerful correspondence will be found in your kitchen.

10. If you performed a cleansing/banishing/protection/whatever and the Symptom was not resolved, then the whatever failed and you need to try again.

11. Wards can and do trap unwanted presences inside.

If you do not have protections up, only place them after you've banished. If you already have wards, temporarily pause them or "open them up" so that things can get through. Or be very clever and construct wards in such a way that things can get out, but not in.

12. Don't wait before you begin taking care of hauntings or malefica.

Don't wait to research and order arcane little herb packets you read off correspondence lists. Don't wait for powerful magical timings. Begin acting. If you actually are dealing with a serious problem that needs special circumstances to be resolved, you probably won't have the data you need until you start trying to solve the problem, and see first hand what works and what doesn't work.

13. Many protections are best conceptualized as treatments, not cures.

A fence will rot if it is not maintained. Permanency in spellwork is a lofty goal that is difficult to achieve. If you are not tending to your protections and re-upping them as needed, they are going to burn out and over time, eventually degrade and fail. One solution is to intentionally put to bed various protections you don't need in the moment, and waking them up as desired. Beginner-level energy work protections, like shields, often only last 24h or even much less.

14. Ask yourself what may be going on with "advanced" practitioners who say they don't use and don't need protections.

Have they cultivated personal power that deters spiritual intrusions? Are they spirit workers or worshipers who receive spiritual protection outside of spellwork? Do they have a powerful natural talent for personal protection that they don't realize they're using? Do they have an ongoing routine of personal cleansing and empowerments that stop problems before they arise? Do they walk a personal path that simply never intersects with dangerous spiritual situations? When you see someone say, "I don't protect and I've never needed to," this should not be taken to mean that if you need to protect, something is wrong with you.

15. While it may be useful to have a heavy-handed protection amulet around in case you need it, cloaking yourself, your property, or your life in powerful protections may cause problems.

16. If you need protection, you need it.

17. It's wise to keep track of what protections you've cast, especially for the prolific spellcaster. Protections can have long-lasting and unexpected implications.

18. It's wise to construct protections with the foresight that you may need to pause their effects or modify their exact focus.

19. Putting things around the four corners of the property really does work great.

20. "Protection" may be best conceptualized as an umbrella term that contains many aspects: building walls, hiding from prying eyes, forming good relationships, preemptively resolving conflict, removing aggressors, and diplomacy.

It's better to have a stick than not have a stick, but a stick is still a poor tool when only talking things out will do.

21. "No, fuck off" might be a powerful act of magic, but it's not like practitioners are out here developing whole-ass spells and rituals for protections just for funsies.

22. You do not need to confirm that something is Going On before engaging in a course of self-cleansing, banishment, and protections - just in case.

23. The best protection spell is one which you are able to cast when you need it.

24. Shielding is a useful trick, and is a good introduction to energy work.

On-demand energy work protections may be draining to many, especially to those who aren't really energy workers and who don't actively develop that muscle or battery. If you find yourself needing daily protection but are becoming fatigued by relying on energy work, try switching to a protective amulet empowered by evoking correspondences or through prayers - anything that draws on external energy. These tend to hold their charge for much longer.

25. Protection won't shield you from symptoms of your disorder or illness, but they may be able to assist with limiting stressors and triggers.

26. For those finding that the regular upkeep of necessary protections has become too draining, experiment with enchanting batches of oils, waters, incense, etc., to easily feed spell vessels.

27. The astute witch will note that protections can and will block the ability of ancestors, guides, guardians, and other forms of desired spirit contact.

28. The practitioner who desires to fucketh about with their dreams does well to first protect their dreams.

[covid-safer-hotties]

Reference archived on our website

Highlights • Long-COVID is heterogeneous in its symptoms, severity, and illness duration. • There was no association between long-COVID and cognitive performance. • Cognitive symptoms may represent functional cognitive disorders. • Long-COVID had lower mean diffusivity on diffusion imaging than normal recovery. • Diffusion imaging differences may suggest gliosis as a mechanism of long-COVID.

To be clear: There was no cognitive difference between people post infection. I can see some people misunderstanding what this says. It says there is some form of brain damage from covid across the board, even if you don't have long covid symptoms or diagnosis.

Abstract

Background

The pathophysiology of protracted symptoms after COVID-19 is unclear. This study aimed to determine if long-COVID is associated with differences in baseline characteristics, markers of white matter diffusivity in the brain, and lower scores on objective cognitive testing.

Methods

Individuals who experienced COVID-19 symptoms for more than 60 days post-infection (long-COVID) (n = 56) were compared to individuals who recovered from COVID-19 within 60 days of infection (normal recovery) (n = 35). Information regarding physical and mental health, and COVID-19 illness was collected. The National Institute of Health Toolbox Cognition Battery was administered. Participants underwent magnetic resonance imaging (MRI) with diffusion tensor imaging (DTI). Tract-based spatial statistics were used to perform a whole-brain voxel-wise analysis on standard DTI metrics (fractional anisotropy, axial diffusivity, mean diffusivity, radial diffusivity), controlling for age and sex. NIH Toolbox Age-Adjusted Fluid Cognition Scores were used to compare long-COVID and normal recovery groups, covarying for Age-Adjusted Crystallized Cognition Scores and years of education. False discovery rate correction was applied for multiple comparisons.

Results

There were no significant differences in age, sex, or history of neurovascular risk factors between the groups. The long-COVID group had significantly (p < 0.05) lower mean diffusivity than the normal recovery group across multiple white matter regions, including the internal capsule, anterior and superior corona radiata, corpus callosum, superior fronto-occiptal fasciculus, and posterior thalamic radiation. However, the effect sizes of these differences were small (all <|0.3|) and no significant differences were found for the other DTI metrics. Fluid cognition composite scores did not differ significantly between the long-COVID and normal recovery groups (p > 0.05).

Conclusions

Differences in diffusivity between long-COVID and normal recovery groups were found on only one DTI metric. This could represent subtle areas of pathology such as gliosis or edema, but the small effect sizes and non-specific nature of the diffusion indices make pathological inference difficult. Although long-COVID patients reported many neuropsychiatric symptoms, significant differences in objective cognitive performance were not found.

[urbanism-and-transit]

Thoughts on trolleybuses?

trolleybuses are a very good option for cities that are willing to put in a bit of extra upfront cost in exchange for long term reliability and cost reduction. trolleybuses are much more mechanically simple than other buses as they do not need to carry their own source of power -- internal combustion engines or battery technology both add layers of complexity, more components that wear and need maintenance, and contribute to extra costs in maintenance. not to mention, they're old and battle tested -- we know what wears down, we know when it wears down, and the technology has been proven for decades

whether your city should build trolleybuses is a different question. cities with challenging topography (San Francisco and Seattle for example) get a lot of extra benefits owing to their superior performance on steep slopes. they also don't suffer from range anxiety the same way battery-electric buses would in cold climates.

it comes with a tradeoff -- the trolley wires are extra maintenance, and if the bus comes off the wire you gotta spend a bit of time putting them back on. modern trolleybuses often include small battery systems to let them travel some miles without being connected to power, which is pretty huge for flexibility reasons. San Francisco's latest trolley fleet can go for (i believe) around 4 miles before losing power? not to mention newer designs that are essentially battery-trolley hybrids, allowing for trolleybuses to venture much farther out from main corridors that have the trolley poles.

cities looking to build bus rapid transit systems especially should consider them -- if you're going through the effort to build dedicated travel lanes for your buses, putting trolley wires above them is not much of an extra cost and can help electrify your system without the unknown variables that come with fledgling battery-electric bus technology.

in short: trolleybuses good, more cities should consider using them, and by no means should any city be ripping out trolley wires.

~ Freyja

[adam-tas]

Batman’s phone - doogee s89 pro - things to know before buy: