Resident Experts
  • Content count

  • Joined

  • Last visited

  • Days Won


CharonY last won the day on March 26

CharonY had the most liked content!

Community Reputation

1711 Glorious Leader

1 Follower

About CharonY

  • Rank
    Biology Expert

Profile Information

  • Gender
    Not Telling
  • Location
    somewhere in the Americas.
  • Interests
    Breathing. I enjoy it a lot, when I can.
  • College Major/Degree
  • Favorite Area of Science
    Biology/ (post-)genome research
  • Biography
    Labrat turned grantrat.

Recent Profile Visitors

56164 profile views
  1. Strange, I could have sworn that I have read something about that about a decade ago. Though those I remember where indeed nm sized, which would insufficient for organelles. hmm.
  2. Well, that should not be the lesson from it. Almost all pathogens (that I can think of) are reasonably well killed by autoclaving.
  3. A Hangover Care drink with science based ingredients

    That would only work if there was established science that the MD could convey (most are not researchers). Unfortunately there are not a lot of properly controlled studies and those that exist have contradicting results. As a whole, the mechanisms are still somewhat unclear. A study has looked at metabolic disturbances due to ethanol exposure (such as blood sugar levels, fatty acid concentration, acidosis etc.) and found that fructose or glucose administrations had an effect on these metabolite levels. However, they had no effect on the the signs of intoxication, including hangover. Well, the aldehyde part at least has one flaw. Ethanol is converted to acetaldehyde, i.e. it does not need to be present prior to consumption to exert toxic effects. Many East Asians have an enzyme variant that converts ethanol to acetaldehyde much more efficiently, resulting in transient accumulation of that compound. Interestingly, there are not a whole lot of properly controlled study on the effects of additional metabolites in drinks on hangover. The few that are out there suggest that the amount is more critical, though those congeners could have an additional effect, though it is unclear to what extent and how.
  4. Today I Learned

    Just to make sure, it was not supposed to be a criticism, When one starts off learning something completely new, everything may seem new and weird. But usually it takes some deeper knowledge to figure out what differences are relevant and which are superficial. My comment on immersion was aimed at a priori assumptions about interpretation of cultural norms without actually understanding them. There are concepts that I feel are overrated or misunderstood (the concept of "face" for example). It does not mean that it is wrong to be sensitive (especially at the beginning). Rather, what I meant is that one should not come with strong preconceptions and use those instead of what the interaction with the folks actually tells you ("no I am pretty sure that you are offended by this, I read it in a book"), if that makes sense. As a silly example, I remember from my time in Poland ,that it was impressed upon us that stirring ones teacup loudly was offensive and we have to take great care not to do that (without further explanation). Only to find out that no one really cared about it unless you are kind of obnoxiously playing around with it. Edit: the context of the interactions are also relevant of course. Meeting someone's parents-in-law in a different country would require a different approach than interacting with co-workers or student, for example...
  5. Today I Learned

    I would always be careful with those stereotypes, even if they are positive. These assumptions often lead to some kind of unconscious assumptions, which may not be harmful, but generally are not useful, either. Specifically one could easily argue that the Eastern area covers a wide range of diverse cultures and from that alone one can deduce that the viewpoints are likely to be vastly different. In addition, while certain philosophical viewpoints may be more dominant, their effect on the individual are going to be coloured by individual experiences. As an example, in the West it is undeniable that Christian teachings have a massive effect on Western history, philosophy and culture. But how it manifests is very diverse, ranging from literal adherence to a vague recognition. It is a lesson that I learned from teaching students from very different backgrounds, trying to be sensitive to cultures does not work well usually, since unless one is immersed in it, much will be based on these types of stereotypes. From self-observation I realized that I thereby assume the students from other backgrounds to be, well, different which did not help the teaching process at all. While one can be cognizant of differences, commonly agreeing to some ground rules based on individual preferences rather than assumed cultural ones were far more helpful in establishing a good mentor relationship. This is not to say that there are no differences, especially when one starts to discusses worldviews (or philosophy). But on most specific, narrow topics or events (as the description of a park for example) the context will be more relevant than the cultural background.
  6. Today I Learned

    I am not sure. If existing it is at best a highly subtle difference and probably more on a linguistic than a perspective level. If you talk to Asians or Europeans regarding their observations there is generally no difference in their recounting if they explain their observation and their position in it, at least if both speak e.g. English. However, if you are talking about general philosophy, then yes, there is a difference in perspective with regard to nature. That, however, does not necessarily translate down to individual behaviour.
  7. Pyura DNA extraction

    To me it looks more like shearing rather than degradation.
  8. Some of them, yes. That being said, autoclaves are routinely tested with spore standards (usually heat tolerant Geobacillus and Bacillus) and under controlled conditions they do die fairly effectively. But if you have complex media (e.g. environemental samples) or some of the hardier bastards in them, it can be challenging, mostly as a single germinating spore can mess up things (especially for long-term experiments). Realized that I said that spores survive quite well. Should read "some spores".
  9. It depends on the bacterium (and even strain), buffer composition and a few other factors. Luckily clostridia are decently killable for the most part, but especially thermophiles can survive multiple autoclaving attempts (yupp, tried that). But even in more common bacteria such as Bacillus you can find that occasionally spores survive and mess up experiments.
  10. Spores (esp. bacterial) survive autoclaving quite well (as well as UV radiation).
  11. Arming Teachers

    And other relevant aspects are that in Israel schools have guards (as mentioned) for terrorist protection, and not to protect against students. As a consequence they are not checking students for weapons or have metal detectors to this effect. Teachers are not armed (or allowed to be armed, IIRC). The population has a higher rate of firearm training, yet fewer private citiziens own guns and they are tracked (as well as bullets). As a whole, despite higher risks due to the political situation, Israel seems to have a more moderate approach to the whole situation. Other than having guards around (for different reasons) how is it even comparable to what folks are afraid of in the US and their reaction to it?
  12. Arming Teachers

    Yes and is the rationale the same as the one proposed in the US? How about take a look at the security situation in Israel, how gun ownership is regulated and how many are in civilian circulation.
  13. Arming Teachers

    You are missing the broader picture here. If the administrations puts forth suggestions that teachers should should be armed and trained for defensive purposes, the next time something happens and there were no armed teachers around, it allows them to put the onus on the teachers ("why weren't they armed?"). It goes beyond allowing teacher to bring arms, which has been (mostly) a passive proposal and only locally implemented. Only recently Florida has approved a program to actively train and arm teachers. In many other states there are no reports for any schools (despite being allowed) to have armed teachers, partially because in some cases insurers would increase their rates as response. Also note that in California a recently a bill was passed to bar school employees to bring guns on campus. Beside safety concerns in case of broad implementation, there is also a societal issue where an atmosphere of fear is being created. Some schools have fortified schools with metal detectors, buzzers and essentially turned them into a fortified bunker of sorts. What I am wondering what that does to the psyche of kids who grew in an environment that teaches them that threats are everywhere and that fast and weaponized responses are the norm, rather than the exception, which they really are. As already pointed out by others, for some reasons the US has a disproportionate issue with gun-related injuries and death compared to other developed nations, including those with relatively high gun prevalence. I have doubts that teaching folks that more guns are the solution is a good idea, but goes into broader societal issues.
  14. Arming Teachers

    Pretty much. The discourse on where the gun was left was a bit on the silly side as it really was not the point. Rather, as pointed out that with increased prevalence of weapons, accidents due to negligence (such as the one described in the article) the likelihood of harmful incidents will increase. And at some point the overall morbidity may be worse with more weapons around than with less, considering that actual school shootings as a whole are rare events. If guns are brought to school every day, there is a cumulative chance that something happens at some point. The other part that IMO requires more discussion is how this proposal in itself adds even more burden on the teachers, who, as a whole and especially in poor districts have too many responsibilities already. They are woefully underfunded and often underprepared to deal with the more extreme situations, badly paid and now on top should provide protective services. Some already have to deal with violence and neglect on a daily basis. Adding that burden on top is just incomprehensible to me.
  15. Trump Calls Comey "Untruthful Slime Ball"

    I doubt that the democrats have forgotten his role in the election (Clinton sure did not). He was a political actor, but arguably not for either party, but rather on behalf of the FBI. However, given Trumps subsequent actions, it does make it highly improbable (to say the least) that the firing was the result of mishandling the Clinton probe and resulting effect on the election. Trump pretty much himself has revealed the actual reasons.