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/sci/ - Science & Math

 Name Options Subject Comment Verification 4chan Pass users can bypass this verification. [Learn More] [Login] File Please read the Rules and FAQ before posting.Additional supported file types are: PDFUse TeX with $tags for inline and [eqn] tags for block equations.Right-click equations to view the source.  08/21/20 New boards added: /vrpg/, /vmg/, /vst/ and /vm/ 05/04/17 New trial board added: /bant/ - International/Random 10/04/16 New board for 4chan Pass users: /vip/ - Very Important Posts [Hide] [Show All] ### Janitor applications are now closed. Thank you to everyone who applied! [Catalog] [Archive] File: 1552614757585.jpg (76 KB, 750x750) 76 KB JPG Can anyone of you smart science people please find a cure for hsv 2 and 1? I got genital herpes after my promiscious past. Tests show that i have hsv1 and hsv2. Bodycount 76.. Please find a cure i want to settle down now with a good man but sadly herpes have stigma Thanks 24 replies and 3 images omitted. Click here to view. >> >>14886418 having HSV-1 or 2 at little as 2002 was a big embarrasment, having cold sores was a stigma that rumoured herpes https://www.youtube.com/watch?v=8Gx39Ihzdnc yeah this one peaked its head in my legislator before covid if memory serves, caused quite a miff between the LGBT and public healthcare system >> File: panic-anime[1].gif (2.23 MB, 498x281) 2.23 MB GIF >>14886440 I get cold sores and I've never even hold someones hand. Now I'm also going to get Alzheimers. >> >>14886440 note that genital herpes can come from hsv-1 or 2 now, hsv-1 is considered not a big deal. Still remember a room mate in college coming home in panick that he tested positive, than i was like broh if you killed at least 6 people in the club over the past two years you can expect hsv-1, he was more relieved i didnt mention the alzheimers to him though >> >>14886447 >killed kissed* >> >>14886413 Infections are different than viruses. And there's already a crisis with antibiotics as we speak. As for STDs, there's already super gonorrhea floating out there, but of course, the average non degenerate doesn't need to worry about it. File: nc734c87638754.png (102 KB, 1369x606) 102 KB PNG Do you think it's acceptable for a gang of climate change activist bureaucrats to dictate what children get to eat if it's for the reduction of of carbon emissions, even if it may prevent children from having a normal diet and possibly causing them to go frail from lack of nutrition? Why or why not? 4 replies omitted. Click here to view. >> Stopping or ending global warming requires serious political action. The Green Party of the United States would have been perfect for this problem, since it's the main one that unifies the face of humanity. >> >>14886416 >>14886429 Killing 99.9% of climatographers will solve climate change. >> >>14886433 >since it's the main one that unifies the face of humanity. lol.. Tell Democrats that. They blame the Greens for Trump 2016. >> >>14886433 >Climate change unifies humanity It doesn't. I and many others choose not to join your religion. >> Women leaving the workforce and becoming housewives at the age of 20, having 3-4 children would fix climate change. File: 1661709822874946.png (521 KB, 720x811) 521 KB PNG /sci/ humor thread 16 replies and 10 images omitted. Click here to view. >> >>14885202 >>14885258 >wordswordswords leftists cant meme >> File: different_integrals.jpg (181 KB, 1000x670) 181 KB JPG >>14885268 >I can't read good, stay like this brainlet >> File: 1548300634962.png (132 KB, 999x614) 132 KB PNG >>14885214 This one? >> File: dumb.jpg (104 KB, 1100x825) 104 KB JPG >>14885281 >> File: RNA World.png (21 KB, 800x600) 21 KB PNG File: 1657318436024.png (70 KB, 2134x1124) 70 KB PNG EE vs CS? 63 replies and 6 images omitted. Click here to view. >> >>14886269 what are you on about, no one is going to read any of these jpgs and walls of text kek >> >>14886295 One of my friends graduated from Grantham University, which before being purchased by the University of Arkansas System, was an for-profit, online only, private school. The curriculum looked somewhat patterned on what you'd see to a low tier state school but when I looked at the course materials, it was almost middle school level. But he was proud of being a college graduate and the military paid all the costs so I just smiled and said it's great he graduated. He ended up hating software development and moved into management. >> Let me deduce all the posts and their variations that will be made in this thread- >hurrrrrrrrrrrrr cs retards don't take pee poo theory in undergrad like us smart people >hurrrrrrrrrrr ummmmmmm we cstards actually take pee poo theory in good programs >REEEEEEEEEEEEEEEEE, no, cstards don't take pee poo theory; they only take poo pee drudgery. Only us big brains take pee poo theory >uhhhhhhh, no just look at this university webpage of this one cs researcher and observe that he does pee poo theory We've had this thread for more than a million times >> > Mechanical, Electrical and Computer Engineering A-S tier >Mechatronics in C tier Why ? It involves knowledge from the based fields, shouldn't it be elder god tier or something ? And those robowaifus ain't gonna build themselves >> File: ok.png (46 KB, 299x284) 46 KB PNG >>14886380 File: coffeeshopsters.jpg (1.04 MB, 3936x2216) 1.04 MB JPG lets say that someone wanted to make an EMP device that was small enough to, say, fit in a backpack, but still strong enough to turn off if not completely fry every device in a small room the size of a coffee shop. please get back to me soon this is urgent >> >>14886354 Just google it retard Have fun going to prison I guess >> File: w5upxjyvx0k21.jpg (283 KB, 569x797) 283 KB JPG >>14886354 Nice try FBI. >> >>14886354 If were as easily done as you imagine, we'd read of it happening all the time. >> >>14886382 Wait they arrest you for Google searches now? Fuck I'm in trouble. I'll miss you guys. What's the science of loosening ones asshole? >> >>14886354 A mob of mostly pacific nuggets. File: unnamed.png (19 KB, 512x512) 19 KB PNG So /sci/, do you actually want to get smarter and increase cognition? Cool, so drop all the "what should I study to be smarter" nonsense. Reading books and accruing information won't do a single thing for you. What you need to increase is fluid intelligence, this will determine how effective and innovative you are in applying acquired information. Someone with higher fluid intelligence will simply out perform you regardless of how much you know. Besides, who cares about random factoids and memory recall? Absolutely useless in our day-to-day. The most effective (by far) scientifically proven method to do this is the dual n back. On an anecdotal level, after using it for about a month my memory improved immensely, which helped a lot at work. And I began thinking of novel solutions to problems that I KNOW I wouldn't have thought of before, this was most noticeable at work. It was the "creative" faculty improving I guess. Whatever it was, I noticed it. 11 replies and 3 images omitted. Click here to view. >> >>14884644 Ok...so any study comparing the efficacy of mono DnB vs ER on cognition? >> >>14884974 Your mind is fucking broken. >> >>14884582 >The most effective (by far) scientifically proven method to do this is the dual n back. It's been thoroughly disproven. Jaeggi could never replicate the success of her first study, and others have also failed to replicate the results. >> >>14884584 >Though this exercise didn't make anyone smarter Kek. >> >>14884582 Based dual n-back enjoyer. Dont worry OP, figures dont lie and the study has been repeated many times. File: 1657805099967.jpg (86 KB, 736x736) 86 KB JPG Formerly >>14858719 >what is /sqt/ for? Questions regarding maths and science. Also homework. >where do I go for advice? >>>/sci/scg or >>>/adv/ >where do I go for other questions and requests? >>>/wsr/ >>>/g/sqt >>>/diy/sqt etc. >how do I post math symbols (Latex)? rentry.org/sci-latex-v1 >a plain google search didn't return anything, is there anything else I should try before asking the question here? scholar.google.com >where can I look up if the question has already been asked here? warosu.org/sci eientei.xyz/sci >how do I optimize an image losslessly? trimage.org pnggauntlet.com >where can I get: Comment too long. Click here to view the full text. 153 replies and 37 images omitted. Click here to view. >> >>14886229 The shirt is no longer available in all colors: You may still be able to purchase a black shirt or a blue shirt, but don't expect the full range of colors to be offered. The shirt is no longer available in any color: It doesn't matter which color you happen to want, we don't have it. Unsure if this'll help. >> >>14886332 Fortunately, it's the kind of thing that will only catch you off-guard once. >> File: Screenshot_50.png (48 KB, 844x347) 48 KB PNG Am I missing something? why is this plain? >> File: strawberry-cat.jpg (154 KB, 1187x1280) 154 KB JPG >>14886229 >>14886229 Define [eqn] D(x) \Longleftrightarrow x \text{ is a dog} \\ C(x) \Longleftrightarrow x \text{ is a dog} \\ xLy \Longleftrightarrow x \text{ likes } y [/eqn] Logic is really just symbolic manipulations, language can sometimes be confusing. Intuitively "No dog likes any cat" means "All dogs dislike all cats". Which can be represented as [math] \forall x \forall y : \left[ D(x) \wedge C(y) \right] \longrightarrow \neg (xLy)$ which you can prove is equivalent to $\neg \exists x \exists y : D(x) \wedge C(y) \wedge xLy$

If you're still confused then think about the difference between these two statements
"No one can kill anyone" (this proposition is false because there exists at least one person who killed at least one person)
"No one can kill everyone" (this proposition is true because we would all be dead)
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>>14886427
meant to complete to
>we would all be dead if it's negation was true

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If it's not aliens then what is it?
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>>14870464
Most probably a duck coupled with bugs in the code. That machine was designed and tested to track airplanes, it does a great job for what was designed but it can fail spectacularly for anything that doesn't fit the expected parameters, like a duck.
>>
Can we culturally genocide UFOtards? Like, if someone admits to believing in them, putting them in re-education camps/taking their kids?
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>>14885116
>aren't even the only sentient creatures in our own galaxy
It wouldn't be too surprising if it turned out that yes we are. Or at least we are the only ones around right now.
If earth had evolved more than one intelligent technological species, that would inspire more confidence. But as far as we can tell there has only been one.
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>>14885745
Oh wait, "sentient" could include dolphins and elephants etc. I get it
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>>14870464
>If it's not aliens then what is it?
Pick whichever ones you're most comfortable with:
>angels/demons/fairies/genies/gods/archons
>ghosts
>inter-dimensional lifeforms
>inter-dimensional portals
>another intelligent species that evolved on earth
>Atlanteans
>misidentified aircraft (planes, drones, balloons, blimps, missiles, etc)
>moon nazis
>secret US government tech
>secret foreign tech
>secret tech from private industry
>atmospheric lifeforms
>CGI
>what people look like when they're astral projecting
>lens flare
>time-travellers from the future
>random blobs of plasma from plate tectonics

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>In late 2021, The Reproducibility Project: Cancer Biology examined 53 top papers about cancer published between 2010 and 2012 and showed that among studies that provided sufficient information to be redone, the effect sizes were 85% smaller on average than the original findings. A survey on cancer researchers found that half of them had been unable to reproduce a published result.
https://www.cos.io/rpcb
>The Reproducibility Project: Cancer Biology was an 8-year effort to replicate experiments from high-impact cancer biology papers published between 2010 and 2012. The project was a collaboration between the Center of Open Science and Science Exchange with all papers published as part of this project available in a collection at eLife and all replication data, code, and digital materials for the project available in a collection on OSF.

What other medical research is likely to have been equally fraudulent?
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>>14885549
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>>14885549
Let him who is without altering a few numbers cast the first stone, lmao
Everyone that conducts research does it
even when looks innocent
>fuck, is that a 3 or a 5
>results are more in line with a 5 and i'm not going to repeat that shit again

>fuck, this number looks off, it increases the standard deviation
>probably made some mistake, let me remove it

It could also be that they altered the procedure and didn't report on it or deliberetly manipulated the procedure and results to achieve certain results

There really needs to be a reform to incentivize reproducibility
I bet that the money lost in research paths that lead nowhere is like a magnitude higher that the money required to review the papers

There should be a score based system that gives credibility to the papers based on reproducibility both in quality and quantity, peer review is not enough
And incentivize it with recognition and money funded by public institutions
Contrarian theories to the establishment should also be rewarded

It's not even a difficult problem, that isn't the limiting factor

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Why aren't women impressed when I tell them I'm an engineer?

Doctors and lawyers get clout but I don't even though I make as much money as them and don't have to work as much as them and am doing high level design which I'm passionate about. Unlike lawyers and doctors who memorize shit and only do it for the social prestige. Why is this??
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>>14882002
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>>14882002
fpbp
>>
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>>14883231
>litters
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>>14882193
Doctors and lawyers start their own practices/firms all the time, what are you on about
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>>14885350
Yes we will have flying cars and live on Mars by the 2000s
Tech optimists always claim shit will happen much sooner than they actually do

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Are vaxxies with low T cell counts a mere coincidence or is this what a dying immune system looks like?
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>>14880434

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7356473/
SARS-CoV-2 Shedding from Asymptomatic Patients: Contribution of Potential Extrapulmonary Tissue Reservoirs
Kalkeri et al
In a minority of patients, extrapulmonary organs (central nervous system, eyes, heart, and gut) are affected, with detection of viral RNA in bodily secretions (stool, tears, and saliva). Infection of such extrapulmonary organs may serve as a reservoir

https://gut.bmj.com/content/70/9/1605.abstract
Gut as viral reservoir: lessons from gut viromes, HIV and COVID-19
Neurath et al
Interestingly, there is a high rate of positive PCR findings in stool even weeks or months after respiratory samples became negative, indicating persistence of mucosal SARS-CoV-2 mRNA in patients with COVID-19.58 This could be due to infection of intestinal epithelial cells, as SARS-CoV-2 could infect and productively replicate in human intestinal tissues ex vivo with subsequent release of infectious virus particles, suggesting that the GI tract serves as a potential route of virus dissemination within an infected host.59 Consistently, a recent study showed that SARS-CoV-2 nucleoprotein (N) is present in intestinal epithelial cells of approximately 35% of patients with COVID-19 even several weeks or months after initial diagnosis, indicating antigen persistence in the intestine after resolution of clinical illness

https://pubmed.ncbi.nlm.nih.gov/35986143/
SARS CoV-2 detected in neonatal stool remote from maternal COVID-19 during pregnancy
Jin et al
These findings suggest in utero transmission of SARS-CoV-2 and possible persistent intestinal viral reservoirs in the newborns.
>>
>>14882319
I wasn't suggesting that it's not possible, I just don't believe it's happening in 100% of people. SARS-CoV-2 is very capable of infecting the intestines if it gets through the stomach, which will likely result in a severe intestinal illness. This clearly happens in some patients, but not all.

https://www.thelancet.com/journals/langas/article/PIIS2468-1253(20)30083-2/fulltext
>Between Jan 16 and March 15, 2020, we enrolled 98 patients. Both respiratory and faecal samples were collected from 74 (76%) patients. Faecal samples from 33 (45%) of 74 patients were negative for SARS CoV-2 RNA, while their respiratory swabs remained positive for a mean of 15·4 days (SD 6·7) from first symptom onset. Of the 41 (55%) of 74 patients with faecal samples that were positive for SARS-CoV-2 RNA, respiratory samples remained positive for SARS-CoV-2 RNA for a mean of 16·7 days (SD 6·7) and faecal samples remained positive for a mean of 27·9 days (10·7) after first symptom onset (ie, for a mean of 11·2 days [9·2] longer than for respiratory samples). The full disease course of the 41 patients with faecal samples that were positive for SARS-CoV-2 RNA is shown in the figure. Notably, patient 1 had positive faecal samples for 33 days continuously after the respiratory samples became negative, and patient 4 tested positive for SARS-CoV-2 RNA in their faecal sample for 47 days after first symptom onset (appendix pp 4–5).

So my takeaway from that is the virus does reach the intestines (or disseminate through the lungs possibly), you're going to harbor the virus for longer than you otherwise would. I wouldn't say it's a permanent infection, though maybe that's possible. It's also worth noting that the original Wuhan virus, along with Delta, had more of a reputation for causing intestinal illness. It doesn't seem to be that common with the Omicron variants.
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>>14873536
Some countries with a nanny state culture like the US still require vaxx for their colleges lel
>>
Jist as an anecdote I'm unbaxxed and feel like I get sick like every 2 months now.

It still just feels like the cold but its annoying for sure
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>>14886152
Interesting. I know a few vaxxies who seem to be sick non stop, and a few vaxxies who have been totally normal since their jab. I wonder if there has been another factor other than covid and teh vax that has fucked with people's immune systems?

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>According to a 1999 study in the Journal of Social and Personal Relationships, 68 percent of female undergraduates also cheat. (Whether they cheat for sexual or emotional reasons remains unclear.)

>In a 1991 study, sex researcher Shere Hite found that 70 percent of married women have cheated on their partners; a 1993 follow-up study found that 72 percent of married men have as well.

>The June 1977 issue of Marriage and Divorce stated confidently that "70 percent of all Americans engage in an affair sometime during their marital life."

>Percentage of men who say they would have an affair if they knew they would never get caught: 74%
>Percentage of women who say they would have an affair if they knew they would never get caught: 68%

https://web.archive.org/web/20170915182616/https://www.statisticbrain.com/infidelity-statistics/

>1 in 10 people are wrong about the identity of their biological father
>"If you look at people who have had genetic tests within families for reasons other than trying to work out paternity, for one in 10 people your dad isn't who you think it is."

https://www.telegraph.co.uk/news/2019/05/31/oneperson-10-mistaken-identity-father-reveals-nhs-chief/

>>
>>14872927
>Do you know how difficult it is pretend your husband is your child's father while living with the person for years, yet women do it with ease.
It's not difficult at all when you delight in lying. Women are trash. Romanticism is a fiction created by men.
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>>14885689
Thank you for reminding me to stop using social media. I am leaving 4chan for the rest of this week. (At least, I will try.)
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>>14885167
Gay-Related Immunodeficiency Syndrome. It's the disease you get from having multiple STDs that collapse your immune system.
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>>14886001
Officially she died of lung cancer, but the truth might have been something else.
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>>14883666
She slurpin up Tyrone's nut as we speak, sorry brah

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https://insulinresistance.org/index.php/jir/article/view/71/224
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>>14884527
>Fix your traumas nigger, not my fault you are retarded and no one wants to be near you
Glad you've outed yourself as racist and bigoted.
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>>14885018
The increase begins exactly when mass jab rollouts happened, and it accelerates with booster doses. In public health that's enough to demand an intervention.
>>
broz?
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>>14882277
>>14882126
>two weeks
lol
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>>14882277
Nope, they're already blaming the "twin pandemic" of covid and the flu. Lots of news stories this week about it.

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if pic rel is not the best model for a healthy diet, then what is the scientifically best? Is vegetarian/Mediterranean diet the best?
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>>14886187
Pic is retarded as fuck because:
1.Last row is autistic crap and not food.
2.Fruits are not equal to vegetables, they only better than grains and roots.
3.Oils should be limited to 10-15% of the calories intake, so should be on the top always.
4.Whole grains should be on top, and processed grains, sugar, processed meat, alcohol should not be in the pyramid in first place, are extras but not part of the normal diet.
5.Red meat (beef, lamb-sheep, pork) and milk-yogurt should be along the other meats.
6.Nuts and oily legumes should be on top. Legumes and some seeds should be in the same level as vegetables.

7. The first level should be +3 liters of water daily.
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>>14886218
surely there must be a fixed model that formulated those corrections
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just follow the simple Food Shape
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>>14886249
There're some food scores like NuVal but they try to reduce all to one category (nutrients, "health harm") with one number and the end result have things that dont make sense.
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>>14886187
"Paleo", look it up, is what our ancestors eat

Should mathematics be strictly beautiful? Shouldn't the world be as well? What are the boundaries of mathematics?
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>>14886223
Define beautiful.

I find this music one of the most beautiful things in all of existence but I'm pretty sure anyone here will call it horrible noise: https://www.youtube.com/watch?v=yq-Xras3os8
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>>14886231
Not going to listen but based on the pic it looks like junk. Most mathematics is like classical music though since G.H. Hardy wrote a book on the beauty or connection between them the theme hasn't caught on and I don't think it helped in Europe. It works in Guatemala. Specifically Escuela Politecnica.
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>>14886270
Try to join guys. Bye.
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bump

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