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by _deltaV
November 6th, 2017, 8:24 pm
Forum: 2018 Lab Events
Topic: Chemistry Lab C
Replies: 50
Views: 12234

Re: Chemistry Lab C

You absolutely, at the minimum, need a chart of delta H values. I can't name how many tests had unanswerable questions because of this. You're allowed 10 pages of info so you might as well fill them with as many charts and data tables as possible
by _deltaV
November 6th, 2017, 8:20 pm
Forum: 2018 Study Events
Topic: Microbe Mission B/C
Replies: 132
Views: 18159

Re: Microbe Mission B/C

I'd really only worry about hepatitis B and possibly C
by _deltaV
May 29th, 2017, 8:28 am
Forum: 2017 Study Events
Topic: Microbe Mission B/C
Replies: 166
Views: 19332

Re: Microbe Mission B/C

I thoroughly regained my respect for this event as a result of nationals. I've taken or looked through dozens of tests and the main recurring thing that really disappointed me was the same microscope and mitochondria/chloroplast diagram that we had to label, the same Gram stain questions we've all s...
by _deltaV
May 21st, 2017, 6:11 pm
Forum: Helicopters C
Topic: Helicopter Flight Times
Replies: 105
Views: 13977

Re: Helicopter Flight Times

Did anybody find a gopro near/around the helicopters area at nationals?
by _deltaV
March 30th, 2017, 10:31 am
Forum: 2017 Lab Events
Topic: Experimental Design B/C
Replies: 78
Views: 12047

Re: Experimental Design B/C

For those of you that don't know the National ExpD supervisor is a little weird to say the least. I think we're all used to testing scientific principles like Hooke's Law or Snell's Law that produce a nice linear, exponential or other type of line graph. At nationals last year the topic was like foo...
by _deltaV
March 27th, 2017, 4:59 pm
Forum: 2017 Study Events
Topic: Microbe Mission B/C
Replies: 166
Views: 19332

Re: Microbe Mission B/C

For our cheat sheets, we usually write things that we won't remember like a specific diagnostic for a disease or specific virulence factors. We have a decent amount of pictures and everything is 5pt font. On a side note, has anyone been disappointed with a lack of quality microbe tests? Our states h...
by _deltaV
February 28th, 2017, 10:02 am
Forum: Helicopters C
Topic: Helicopters C
Replies: 209
Views: 30458

Re: Helicopters C

I just want to add my 2 cents to this bonus discussion. A rotor rigidly attached to the motorstick, rotating independently of any of the other rotors, under ideal conditions, should not qualify for the bonus because we assume that the motorstick doesn't rotate. However, some of the energy of the rub...
by _deltaV
February 25th, 2017, 12:19 pm
Forum: 2017 Study Events
Topic: Microbe Mission B/C
Replies: 166
Views: 19332

Re: Microbe Mission B/C

When we're talking about immunity, ask yourself where the pathogen attacks. Take cholera, for example. It doesn't invade the cells of the of intestines, so cell mediated immunity wouldn't do much against it. This is where humoral immunity would come in. An infection in the alveoli such as S. pyogene...
by _deltaV
February 22nd, 2017, 9:14 am
Forum: 2017 Study Events
Topic: Microbe Mission B/C
Replies: 166
Views: 19332

Re: Microbe Mission B/C

The AP Bio book (Campbell's) is good for general biology topics, but it goes nowhere near in depth enough for microbe mission at most levels. Just to give an idea, our coach is getting a degree in microbiology and we're using his old textbooks to study for the event, as well as checking out textbook...
by _deltaV
February 15th, 2017, 11:51 am
Forum: 2017 Lab Events
Topic: Chem Lab C
Replies: 19
Views: 5999

Re: Chem Lab C

Just adding to what Avogadro said, in the rules it states that you have to know general chemistry concepts, stoichiometry being one of them. It's completely fair for a proctor to make a test consisting entirely of gas and thermo stoich calculations. In fact, our regional supervisors do just that eve...
by _deltaV
February 8th, 2017, 10:13 am
Forum: Helicopters C
Topic: Helicopters C
Replies: 209
Views: 30458

Re: Helicopters C

Has anybody else with the kit had problems where the ribs just don't reach the bottom spar assembly, and things just don't line up in the way they should? When I built the top rotor I ended up having to cut 1/16" shims from the wood the ribs came on to make sure that the bottom inner spars reac...
by _deltaV
February 8th, 2017, 10:06 am
Forum: Helicopters C
Topic: Helicopters C
Replies: 209
Views: 30458

Re: Helicopters C

Just to give some perspective, teams were breaking 2:30 at Cornell. At MIT, one team in the time block before me broke something like 2:30 and another team seemed really excited about that. My time of :58 didn't break the top 30 and 1:17 from our B team didn't break the top 20. I think at Nationals ...
by _deltaV
February 2nd, 2017, 10:41 am
Forum: 2017 Study Events
Topic: Microbe Mission B/C
Replies: 166
Views: 19332

Re: Microbe Mission B/C

This is a question that pertains to both microbes and disease for which I have never found a quality answer: What is the difference in diseases caused by bacteria and diseases caused by viruses? Obviously their causative agents differ, but how do the general characteristics differ? For example, doe...
by _deltaV
January 20th, 2017, 8:14 am
Forum: 2017 Study Events
Topic: Microbe Mission B/C
Replies: 166
Views: 19332

Re: Microbe Mission B/C

As far as I know no microbes are involved in producing olives as they are brined or pickled. Dry sausages like salami and chorizo actually do involve some form of fermentation that produces acids, curing and preserving the meat
by _deltaV
January 9th, 2017, 10:16 am
Forum: Helicopters C
Topic: Helicopters C
Replies: 209
Views: 30458

Re: Helicopters C

On the subject of knots, I personally have tied a simple figure eight knot on the end of my rubber bands and this has worked for the past three years. I prefer this knot to any other because it has a very small profile that prevents bumping against most motorsticks. The only breakages I've gotten we...

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