Pages

Saturday, March 28, 2020

If the common cold is a type of coronavirus and we're unable to find a cure, why does the medical community have confidence we will find a vaccine for COVID-19?

If the common cold is a type of coronavirus and we're unable to find a cure, why does the medical community have confidence we will find a vaccine for COVID-19?

If the common cold is a type of coronavirus and we're unable to find a cure, why does the medical community have confidence we will find a vaccine for COVID-19?

Posted: 27 Mar 2020 10:51 AM PDT

Do very large animals like whales have noticeable time lag in their reactions and motor functions associated with extremely long nerves?

Posted: 27 Mar 2020 06:09 PM PDT

How did the 1918-19 Spanish Flu end?

Posted: 27 Mar 2020 11:08 AM PDT

I know there are competing theories as to how the flu began and we know with a fair degree of certainty why it was so virulent, but how did it seemingly suddenly end? Herd immunity? Better medical precautions? Something else?

submitted by /u/OPDidntDeliver
[link] [comments]

Covid-19 can have up to a 14 day incubation period, where some people have no symptoms. What is happening/what is the virus doing during that time?

Posted: 27 Mar 2020 07:44 PM PDT

How often do cancer cells develop in our body that self-terminate or are caught by the immune system before doing any harm?

Posted: 27 Mar 2020 05:57 PM PDT

How do chemicals in cigarettes cause lung cancer?

Posted: 28 Mar 2020 06:42 AM PDT

How do chemicals such as nicotine cause lung cancer?

submitted by /u/Morrissye
[link] [comments]

Does every element have atleast one stable isotope, even if its not known what ratio it is neutron to proton wise?

Posted: 27 Mar 2020 05:03 PM PDT

So is every element susposed to have a stable isotope? Also is there a means, mathematically or however, to determine the stable isotope/s of any given element? And by "stable" does this just refer to an element as having an extremely long decay time?

submitted by /u/HectorLeGoat
[link] [comments]

How is the global blood supply amid COVID-19?

Posted: 27 Mar 2020 10:21 AM PDT

I used to donate blood regularly and meant to do it soon, and I was getting a lot of emails about how short the supply was (nationally we were down to less than a day's worth). Now that we're practicing social distancing, how is the blood supply and how are donation sites keeping donors safe? What is being done to stretch the existing supply?

submitted by /u/Deil_Grist
[link] [comments]

How did early humans obtain enough iodine from their diet?

Posted: 27 Mar 2020 10:50 AM PDT

Been reading up on iodine deficiency in inland populations due to lack of access to marine foods. How would early humans that were inland have got enough iodine from their diet if they didn't have access to these foods? Were the earliest humans just always close enough to lakes and rivers to catch fish, or was iodine deficiency just a condition that was tolerated?

Thank you.

submitted by /u/mattyfryatt123
[link] [comments]

What is the mechanism by which a virus dies outside a host cell--and what happens to the RNA inside?

Posted: 27 Mar 2020 02:28 PM PDT

I've read lots on what soap does to viruses (so cool!), but I can't seem to find anything about how simply being outside a host cell long enough renders a virus inert, and I'm especially curious what happens to the genetic material inside once that happens. Does something else grab it up, or does it just wither to nothing?

E.T.A.: The subject line should read "RNA/DNA inside."

submitted by /u/smallsparkofhope
[link] [comments]

How does soap remove compounds besides lipids?

Posted: 27 Mar 2020 10:42 AM PDT

With everyone being told to wash your hands, I wanted to understand more about the mechanism by which soap works. I understand with lipids (fats, oil, COVID-19) the lipophilic characteristic of soap will bind with lipid layers. Once bound, they are then removed when rinsed away or torn apart via mechanical action. However, how does soap work to remove other compounds from our hands? Do soap molecules bound with other compounds?

As an example, I recall a time recently when after a camp fire, I washed my hands and face. After drying, I noticed that the smell of smoke was significantly diminished. The soap was unscented as well, so I did not think the scent was merely masked.

​

Any answers are appreciated :)

submitted by /u/pythons_are_scary
[link] [comments]

What exactly is the cause of chest pain with COVID-19?

Posted: 27 Mar 2020 06:21 AM PDT

I noticed one of the symptoms of COVID-19 is persistent pain or pressure in the chest. This is considered to be a serious symptom that requires medical attention. I am wondering if someone could explain what is going on inside the human body that causes this pain or tightness.

Thanks for any insight you can provide.

submitted by /u/csaw_88
[link] [comments]

How do doctors know when it is safe to stop giving vaccinations against a disease?

Posted: 27 Mar 2020 07:40 AM PDT

Will people still be vaccinated against measles and polio after 100 years?

submitted by /u/DFERSQ
[link] [comments]

How is R0 calculated/estimated?

Posted: 27 Mar 2020 07:10 AM PDT

I've seen the r0 estimated for the coronavirus as less than the common cold but it seems to be crazy contagious. Are people underestimating the r0?

submitted by /u/illZero
[link] [comments]

How are studies on transmission actually conducted?

Posted: 27 Mar 2020 05:23 AM PDT

For example, "the main pathway for virus to transmit is by droplets", how did they study percentages?

submitted by /u/Manojative
[link] [comments]

How do false positives happen in Viral testing?

Posted: 27 Mar 2020 03:50 AM PDT

That might be quite an open question. As I understand it, testing involves changing the RNA in the sample to DNA and then matching it to another sample. That seems kind of foolproof, so why do people test positive for a virus they don't have?

submitted by /u/AntiqueWolverine
[link] [comments]

Is the amount of virus material you recieve important in the course and severity of the disease?

Posted: 26 Mar 2020 10:34 PM PDT

I can image with 1 virus particles you only infect one cell and it takes a while yo infect and thus kill other cells. in that tima the body can start working on an immune response. With recieving millions of virus particles those infect millions of cells that will die from reproducing the virus and also will be ahead of any immune response.

Could this be explaining some of the health care and often younger cases dying?

submitted by /u/Manisbutaworm
[link] [comments]

How did scientists infect monkeys with SARS-CoV-2?

Posted: 27 Mar 2020 10:38 AM PDT

I'm curious to know how monkeys were able to be infected with SARS-CoV-2.

https://www.biorxiv.org/content/10.1101/2020.03.13.990226v1

It was through unfortunate mutations that SARS-CoV-2 was able to become zoonotic and jump species from an animal to infect humans. So how then were they able to get it to jump species again to a monkey species?

How were they able to get the SARS-CoV-2 spike proteins to fit into the receptors on monkey cells? I would think that monkey cells wouldn't have receptors that fit SARS-CoV-2 spike proteins since they're not human? Or is it that primates share the same structure for the ACE-2 receptor in their cells as humans do, which would mean that SARS-CoV-2 is able to infect any primate species closely related to humans?

submitted by /u/rabidsoggymoose
[link] [comments]
vào lúc No comments:

Friday, March 27, 2020

Do people become immune to CoVid-19 after recovering from it?

Do people become immune to CoVid-19 after recovering from it?

Do people become immune to CoVid-19 after recovering from it?

Posted: 26 Mar 2020 01:50 PM PDT

Do skin grafts include nerves, and if so do they retain the sensitivity of thier original location?

Posted: 27 Mar 2020 06:27 AM PDT

How do orange farmers grow seedless orange trees if their fruit has no seeds?

Posted: 26 Mar 2020 02:26 PM PDT

Does orbital velocity remain constant over time?

Posted: 26 Mar 2020 03:17 PM PDT

ie. are the planets orbiting at the same speed they were millions of years ago? Cannot find an answer I can understand on professor Google

submitted by /u/raresaturn
[link] [comments]

Why is it that when I'm thinking it "feels" like it's in my head? Besides the obvious location of the brain, why does thinking "feel" like it's in my head and not somewhere else/not localized at all?

Posted: 26 Mar 2020 07:55 PM PDT

Why does the strong force not seep out of the nucleus the way the electromagnetic force seeps out of electrically neutral atoms?

Posted: 26 Mar 2020 02:59 PM PDT

I understand that there's never excess strong-force charge because it's too hard to separate quarks, but even electrically neutral atoms have strong electromagnetic properties that affect our daily life, why is the same not true for the strong force?

submitted by /u/barvader
[link] [comments]

Do enzymes require energy to form or do amino acids just combine spontaneously to form one?

Posted: 26 Mar 2020 11:34 PM PDT

[Biology] Why dont animals who hybernate lose muscle mass/strength?

Posted: 26 Mar 2020 01:47 PM PDT

Maybe they do and im just plain wrong but if i dont hit the gym in a week i lose about 1km off my run or 10lbs of dumbells, but bears can just get out and start hunting, or i just saw a pic of a turtle that had a huge mound of mud on top of it, im not sure i couldjust dig myself out of 1 foot of dense mud if i were hybernating? Thanks a lot!

submitted by /u/RRH
[link] [comments]

Why do pseudostratified epithelial cells have their nuclei at different layers? How does this help the cell with doing anything better then regular columnar epithelial cells

Posted: 26 Mar 2020 09:10 PM PDT

How many megapixels would be required to take a photo of someone's face at 6' distance and be capable of zooming in far enough to see a virus?

Posted: 27 Mar 2020 05:33 AM PDT

Besides domesticating animals, how have humans changed the evolutionary path of other species?

Posted: 26 Mar 2020 03:57 PM PDT

Is there a formula to find the absolute or relative organ weight in humans?

Posted: 26 Mar 2020 06:44 PM PDT

How do viruses modify cell behaviour?

Posted: 26 Mar 2020 10:04 AM PDT

As far as I understand, viruses are simply genetic material wrapped into some coating. When they enter a compatible cell, they simply begin to reproduce and repeat the process.

What I don't understand is how this activity can translate into such a vast array of symptoms or no symptoms at all. I understand that certain viruses target specific kinds of cells, but how do they rewire these cells to perform certain undesirable functions as opposed to just killing them?

submitted by /u/de1pher
[link] [comments]

Is the good weather we are seeing in Northern EU related to CV-19 (and industrial shutdowns/reduction in pollution) or is it just Spring?

Posted: 26 Mar 2020 03:50 AM PDT

Weather seems great in Amsterdam for the time of year, notably the skies seem clearer... is it related to reduced pollution?

submitted by /u/alxwx
[link] [comments]

What do we think Deinonychus and Velociraptor used toe hooks for?

Posted: 26 Mar 2020 11:21 AM PDT

I had been thinking about it recently.

From my admittedly amateur understanding, it seems like at least the smaller Velociraptor could use its toe hooks to dig into the flesh of a larger animal, in an attempt to bring it down, similar to how lions hunt larger prey.

Is this reasonable?

How do we know?

If not, what are the toe hooks believed to be useful for instead?

How much muscle/tendon do we think was attached to the toes with the large hooks?

Please go easy on me; I'm very excited to learn!

submitted by /u/y0nderYak
[link] [comments]

Can people who recovered from COVID-19 become sick from the virus again? Or are they forever immune to it?

Posted: 26 Mar 2020 03:10 AM PDT

Why does almond milk need to be refrigerated?

Posted: 26 Mar 2020 08:37 AM PDT

When eating my cereal today I looked at the ingredients on my coconut almond milk and it looked like everything in there could be stored at room temperature. What changes that makes it so you must refrigerate almonds?

submitted by /u/0guyboom
[link] [comments]
vào lúc No comments:

Thursday, March 26, 2020

AskScience Panel of Scientists XXII

AskScience Panel of Scientists XXII

AskScience Panel of Scientists XXII

Posted: 24 Jan 2020 05:32 PM PST

Please read this entire post carefully and format your application appropriately.

This post is for new panelist recruitment! The previous one is here.

The panel is an informal group of redditors who are either professional scientists or those in training to become so. All panelists have at least a graduate-level familiarity within their declared field of expertise and answer questions from related areas of study. A panelist's expertise is summarized in a color-coded AskScience flair.

Membership in the panel comes with access to a panelist subreddit. It is a place for panelists to interact with each other, voice concerns to the moderators, and where the moderators make announcements to the whole panel. It's a good place to network with people who share your interests!

You are eligible to join the panel if you:

  • Are studying for at least an MSc. or equivalent degree in the sciences, AND,

  • Are able to communicate your knowledge of your field at a level accessible to various audiences.

Instructions for formatting your panelist application:

  • Choose exactly one general field from the side-bar (Physics, Engineering, Social Sciences, etc.).

  • State your specific field in one word or phrase (Neuropathology, Quantum Chemistry, etc.)

  • Succinctly describe your particular area of research in a few words (carbon nanotube dielectric properties, myelin sheath degradation in Parkinsons patients, etc.)

  • Give us a brief synopsis of your education: are you a research scientist for three decades, or a first-year Ph.D. student?

  • Provide links to comments you've made in AskScience which you feel are indicative of your scholarship. Applications will not be approved without several comments made in /r/AskScience itself.

Ideally, these comments should clearly indicate your fluency in the fundamentals of your discipline as well as your expertise. We favor comments that contain citations so we can assess its correctness without specific domain knowledge.

Here's an example application:

 Username: /u/foretopsail General field: Anthropology Specific field: Maritime Archaeology Particular areas of research include historical archaeology, archaeometry, and ship construction. Education: MA in archaeology, researcher for several years. Comments: 1, 2, 3, 4.

Please do not give us personally identifiable information and please follow the template. We're not going to do real-life background checks - we're just asking for reddit's best behavior. However, several moderators are tasked with monitoring panelist activity, and your credentials will be checked against the academic content of your posts on a continuing basis.

You can submit your application by replying to this post.

submitted by /u/AskScienceModerator
[link] [comments]

Can a graphene sheet be rolled up like a scroll until it reaches a large enough diameter to be used as a wire? If so, would it still have really good conducting capabilities?

Posted: 25 Mar 2020 05:47 PM PDT

AskScience AMA Series: We are iNaturalist, educators who use our online social network to help students learn about nature. Ask Us Anything!

Posted: 26 Mar 2020 04:00 AM PDT

iNaturalist is an online social network of people sharing biodiversity information to help each other learn about nature. It's also a crowdsourced species identification system and an organism occurrence recording tool. You can use it to record your own observations, get help with identifications, collaborate with others to collect this kind of information for a common purpose, or access the observational data collected by iNaturalist users.

With so many students sheltering in place during the COVID-19 pandemic, many educators and parents have turned to iNaturalist and Seek by iNaturalist, so not only will iNaturalist co-founder and co-director Ken-ichi Ueda answer questions here, we've also recruited a few educators who have used iNaturalist with their students. They are:

  • Mary Ford, National Geographic Society's Director of Professional Learning
  • Colleen Hitchcock, Associate Professor, Biology, Brandeis University
  • Anne Lewis, Special Projects Director South Dakota Discovery Center
  • Kelly L O'Donnell, Director of Science Forward, Macaulay Honors College, CUNY

We'll be on at 1 pm (ET, 17 UT), AUA!

Username: inaturalistorg

submitted by /u/AskScienceModerator
[link] [comments]

Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology

Posted: 25 Mar 2020 08:10 AM PDT

Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Economics, Political Science, Linguistics, Anthropology

Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big or small for AAW. In this thread you can ask any science-related question! Things like: "What would happen if...", "How will the future...", "If all the rules for 'X' were different...", "Why does my...".

Asking Questions:

Please post your question as a top-level response to this, and our team of panellists will be here to answer and discuss your questions.

The other topic areas will appear in future Ask Anything Wednesdays, so if you have other questions not covered by this weeks theme please either hold on to it until those topics come around, or go and post over in our sister subreddit /r/AskScienceDiscussion , where every day is Ask Anything Wednesday! Off-theme questions in this post will be removed to try and keep the thread a manageable size for both our readers and panellists.

Answering Questions:

Please only answer a posted question if you are an expert in the field. The full guidelines for posting responses in AskScience can be found here. In short, this is a moderated subreddit, and responses which do not meet our quality guidelines will be removed. Remember, peer reviewed sources are always appreciated, and anecdotes are absolutely not appropriate. In general if your answer begins with 'I think', or 'I've heard', then it's not suitable for /r/AskScience.

If you would like to become a member of the AskScience panel, please refer to the information provided here.

Past AskAnythingWednesday posts can be found here.

Ask away!

submitted by /u/AutoModerator
[link] [comments]

Can a geosynchronous orbit happen on every planet? Or does it need specific circumstances like certain rotation/revolution speed? And can you do it with any object?

Posted: 26 Mar 2020 03:05 AM PDT

How do blood vessels reconnect after large open wounds?

Posted: 25 Mar 2020 11:01 PM PDT

How does a virus "die"? What "kills" it?

Posted: 25 Mar 2020 12:41 PM PDT

How does a virus literally "die"? I get that viruses aren't technically alive, depending on perspective. But how does it become "safe" or "inactive"? Does the cell wall/lipid coating deteriorate or something? What is it that bleach/soap/etc. does that "kills" the virus? (Or, for that matter, what does leaving items in the garage for a few days do that kills it?) What, scientifically, is happening to the virus structure that "kills" it?

submitted by /u/blackbeardrrr
[link] [comments]

Why do human babies have so much trouble sleeping? Do babies of other species have trouble sleeping? Are humans unusual in this regard?

Posted: 25 Mar 2020 01:08 PM PDT

Why don't Christmas lights get dimmer as you go down the string? Does each light not suck up some of the energy?

Posted: 25 Mar 2020 09:18 PM PDT

I was wondering how far away do you have to stand away from the other person to have the same gravitational pull on each other as the moon does to earth?

Posted: 26 Mar 2020 05:28 AM PDT

I can't really hug or any thing so I thought this might be cool I didn't know where to go and couldn't find it on Google

submitted by /u/reuben472
[link] [comments]

What does contemporary biology and genetics have to say about race? Does race exist at all? And are there differences that are more than just skin deep?

Posted: 25 Mar 2020 09:32 PM PDT

I was very influenced by Charles Mills' essay, "But what are you really?", where he argues that race does not exist biologically, but it is 'real' in a social sense. I'm interested in what the consensus is around the realness and non-realness of race in a biological/genetic sense. I'm familiar with the anthropological criticisms of race, but not the biological ones. Mills claims that the consensus among geneticists is that race is not biologically real, but he doesn't outline the reasoning.

Furthermore, I recently read Rushton and Jensen's "Thirty Years of Research on Race Differences in Cognitive Ability" documents IQ differences in populations on the basis of race. Does anyone care to comment on criticisms or support of their research and arguments? Is there any good work done into looking into whether or not there are racial differences that are not just morphological?

submitted by /u/VIOLENT_SEXUAL_ACT
[link] [comments]

What does "For exponents of 2 or less, a power-law distribution lacks a well-defined mean." mean?

Posted: 25 Mar 2020 08:08 PM PDT

"For exponents of 2 or less, a power-law distribution lacks a well-defined mean. The mean of data drawn from a power-law distribution with an exponent of 1.5 never converges. It increases without limit."

From Model thinkers by Scott Page.

submitted by /u/MemoryOfThatDay
[link] [comments]

What determines the symptoms experienced from coronavirus infection?

Posted: 25 Mar 2020 04:19 PM PDT

I understand that basically all our symptoms we experience from like a cold or COVID-19 infection are brought on by our immune system, mostly through cytokines. But what determines why symptoms range so much (coughing vs. sneezing vs. fever vs. congestion vs. muscle aches-- and their combinations)?

submitted by /u/HoboZoo
[link] [comments]

Did the Cretaceous period experience hurricanes? Where would they occur/how would they compare to hurricanes in the present, strength-wise?

Posted: 25 Mar 2020 03:34 PM PDT

Kind of a silly question I guess. I just often find myself wondering as to my small brain it seems like a lot of conditions have to be met to create a hurricane season.

submitted by /u/PrettyFlyForAFryGuy
[link] [comments]

Can Mosquitos spread COVID-19?

Posted: 25 Mar 2020 06:33 PM PDT

I just saw my first mosquito and I was just wondering if mosquitoes can carry COVID-19?

submitted by /u/GeekShow
[link] [comments]

Is the physical ear required to hear?

Posted: 26 Mar 2020 02:27 AM PDT

I've been wondering about this for a bit now and all my searches just wind up with "how to clean your ear, hearing aids, infections" etc but what I'm trying to figure out is if the actual physical ear is required in anyway for hearing of if you could just have two holes in your head for hearing.

submitted by /u/Ritzylist
[link] [comments]

What happens on a cellular level when our bodies build a tolerance to a drug?

Posted: 25 Mar 2020 03:12 PM PDT

What are the most high resolution closeups of the sun?

Posted: 25 Mar 2020 10:08 AM PDT

I'm curious to know about sun photography and what would be the most extreme close-up pictures of the surface of our sun. It would also be great to get info about the light spectrum + other technical info of the imagery and the scale of what I'm looking at.

submitted by /u/Delukse
[link] [comments]

Have there been any pandemics that affected non-humans?

Posted: 25 Mar 2020 10:26 AM PDT

My understanding of the Coronavirus is that it only affects humans. So, I'm wondering if there have been other major pandemics in recent times that have only affected certain species of (non-human) animals?

submitted by /u/jplank1983
[link] [comments]

Is sound pressure a linear scale? is a pressure of 0.5 twice as loud as 1.0?

Posted: 25 Mar 2020 04:07 PM PDT

I was looking at buying a bit of equipment and have narrowed it down to two options.

One has a decibel rating of 67Db and the other 71Db. This translates into a sound pressure of 0.0447 and 0.071. Does this mean 71Db is about 60% louder than 67Db?

submitted by /u/TerribleFruit
[link] [comments]

How do we know the temperature on other planets? How do we calculate it?

Posted: 25 Mar 2020 08:48 PM PDT

Can lack of one sense heighten another?

Posted: 26 Mar 2020 12:18 AM PDT

I have never been able to smell well but I notice sound very well to the point a lot of things irritate me like the sound of people walking, talking loud and just small noise that makes it hard for me to focus, fall asleep etc. Sometimes it gets to the point where I can get bad anxiety from noises. Can this correlate with each other in anyway? Or could it be something else? I also have very sensitive skin when it comes to touch even holding hands and I'd like to say I'm very observant but this is all brief stuff. Not sure if some of these things could be because of something else but just very curious

submitted by /u/collin_himself
[link] [comments]

What's the rate of change in Earth's solar cycle? How long will a year be 10k, 100k, and 1M years from now?

Posted: 25 Mar 2020 11:13 PM PDT

And will the Earth's days be proportionately or inversely different?

The months/lunar cycles?

submitted by /u/deanmsands3
[link] [comments]

What is the most distant galaxy in which we can still see individual stars?

Posted: 25 Mar 2020 03:37 PM PDT
vào lúc No comments:
Subscribe to: Posts (Atom)