Do you have Trypophobia?

Trypophobia is an irrational fear of holes. Many people have never heard of the word trypophobia, but a simple search online will tell you that it is actually quite a common fear. We are surrounded by holes in our daily lives, such as the pores on our skin or the holes on clothes, but no one really has a fear of those. Trypophobia does not mean the fear of any hole, but refers specifically to a cluster of holes. Many things found in nature such as honeycombs, and lotus seed pods may strike a feeling of disgust in some people.

Holes

A sea creature full of holes

However, there has been debates going on about if trypophobia is a real phobia. A study was done by two researchers who monitored the brain activities of patients using an image scan and found extreme brain activities whenever the participants saw an object with a cluster of holes. Many scientists still disregard trypophobia as an actual phobia because they believe people just feel discomfort based on what they see, and are not experiencing actual fear. A phobia by definition is an extreme or irrational fear of or aversion to something. Meanwhile, other scientists believe that people are just influenced by others who have some discomfort when seeing clusters of holes and end up believing they as well have trypophobia

 

Although scientists are not quite sure about the cause of trypophobia, they have hypothesized that it may have an evolutionary basis. They compared pictures of clusters of holes and found that it resembled spots  found on poisonous animals.   However, trypophobia is still not very well known, so more research must be done in order to come to a conclusion.  Currently, it is not considered to be an official phobia by many Psychological associations and is not written in books regarding mental disorders.

 

-Jean Wang

Lotus Seeds

Lotus Seeds

 

 

 

 

 

 

 

Surviving a Night on the Moon

Image source: @Doug88888 on Flickr

The moon, earth’s only natural satellite has long since fascinated scientists and astronomers alike. It should interest you too, because as of  2009  it has been proven that there is water on the moon.  New information about these water deposits is continually being collected by the Lunar Reconnaissance Orbiter and its finding are summarized in this video:

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Video source: NASA Goddard on Youtube

Naturally as a result, the interest in future manned missions has grown. However, if scientists want to plan a manned mission to the moon, one of their biggest challenges is ensuring the survival of both the astronauts and all their machinery during the long, dark and cold lunar night.

Days and Nights on the Moon
In order to understand the difficulties posed by the lunar night, one needs to know a little bit about how the moon cycles through day and night. The rotation of the moon around its axis is approximately the same amount of time as it takes for the moon to complete its orbit around the earth. The moon completes its rotation in about a month, thus the moon has roughly fourteen days of light and fourteen days of darkness.

Moonlight and Earthlight
However you might be wondering about how dark it really is on the moon. On earth, nights can be relatively bright due to due moonlight. Is the reverse true?  The answer is yes, partially, as the moon does get some earthlight (also called earthshine). However as mentioned above the rotational period and the orbit of the moon are almost the same. Thus the same side of the moon is always facing the earth. So when it is night on the side of the moon facing earth, it will recieve earthlight. Yet the other side of the moon it does not receive earthlight so it will be much darker during its night.

Image source: Bluedharma on Flickr

Darkness is not the only challenge; temperatures can drop as low as -150°C! Such an extreme temperature coupled with the dust and high levels of radiation can prevent much of the lunar equipment from working.

New Scientific Developments
In a recent study published this month, scientists analyzed methods to generate electricity and store heat. This heat could be used to keep lunar apparatus above their minimum temperature, of roughly -30°C. In their research they compared two different approaches to overcome the nocturnal difficulties.  They concluded that a reflector and thermal mass (a device to store heat energy) connecting to an engine was the most effective method.  During the day, the reflector directs the the energy from the sun’s rays to store it in the thermal mass and concurrently run the engine. At night the stored energy in the thermal mass is used as a power source for the engine.

By utilizing these new developments in technology, it could facilitate future long term lunar manned  missions.

Julia Brown

References:
1. Climent, B.; Torroba, O.; Gonzales-Cinca, R.; Ramachandran, N.; Griffin, M. Heat storage and electricity generation in the moon during the lunar night. Acta Astronautica. 2014, 93, 352-358.
2. Encyclopedia Brittanica Earthshine. http://www.britannica.com/EBchecked/topic/176367/earthshine (Accessed Jan 20, 2013)
3. NASA Ice on the Moon: A Summary of Clementine and Lunar Prospector Results.  http://nssdc.gsfc.nasa.gov/planetary/ice/ice_moon.html (Accessed Jan 17, 2014)
4. NASA Imagine the Universe. http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/980302b.html (Accessed Jan 17, 2014)
5. NASA Imagine the Universe. http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/980309b.html (Accessed Jan 17, 2014)
6. Nine Planets org The Moon. http://nineplanets.org/luna.html (Accessed Jan 17, 2014)
7. Science Daily Producing Electricity on the Moon at Night. http://www.sciencedaily.com/releases/2013/12/131220113401.htm (Accessed Jan 17, 2014)
8. Wikipedia Thermal Mass. http://en.wikipedia.org/wiki/Thermal_mass (Accessed Jan 18, 2014)

3-D Printers: Hope or hype?

        Over the past few years, hype over 3-D printing has continued to grow. With each new revelation comes increased anticipation of the industry’s potential, now including even the biomedical field. The media reports of printers designed to create almost unbelievable possibilities from live tissues, bone substitutes, to the potential of organs. However, how reputable are these claims?  How is this technology even possible? Well to start, simply by changing the ink.

A Standard Public 3-D Printer
Source: Wikipedia Commons

The “Ink” is Alive

        Genuine cells have been printed and successfully cultured into tissues through the use of “bio-ink”. This ink contains live cells in a formulation of matrix molecules. During printing, the cells are layered upon each other in an additive procedure, eventually resulting in a 3-D structure. Why bother “printing” out the cells? The appeal of 3-D printers is in the efficiency. They save countless hours of manual labour normally needed to layer a simple tissue, let alone an organ.

Beyond In-Vitro

      The BioPen goes beyond the standard of printing tissues onto slides. The handheld printer literally “draws” a framework onto damaged or missing pieces of bone. Initially, the pen deposits modified ink, a gel made from biopolymers and live cells, onto the targeted area. The notion is that by combining this with regenerative stem cell therapy, the polymers will eventually degrade and be replaced by new tissue. The BioPen would allow surgeons to deliver cells instantly and accurately as a temporary substitute.

Below is a short clip showing the pen in action, courtesy of the Australian Research Council of Excellence for Electromaterials Science (ACES).

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Tailor Made Organs?

          3-D printing has large implications for the future of regenerative medicine, even if we are not quite there yet. This technology would reduce the demand for organ and tissue transplants, notorious for their long wait lists. Though it’s not near ready for clinical use, the bio-printing company Organovo claims that they will unveil the first 3-D printed liver by the end of 2014.

Cancerous liver cells: a common reason for the high demand of transplants
Source: Wikipedia Commons

The Hope

         3-D printing continues to rapidly evolve as it becomes more readily available in many fields. The 3-D biomedical industry is still in its initial stages, as researchers will have to overcome barriers to make it more efficient and economically feasible. Regardless, presentations have already demonstrated its viability, from the printing of live tissues to the BioPen’s application into orthopedic surgery. Ultimately, the potential of 3-D printing is likely to have large further implications for not only the medical industry, but society in general.

-Richelle Eger

References

“BioPen to Rewrite Orthopaedic Implants Surgery.” University of Wollongong.              N.d. Web. 19 Jan. 2014.

Fraunhofer-Gesellschaft. “Need different types of tissue? Just print them.”                        ScienceDaily, 24 Oct. 2013. Web. 19 Jan. 2014.

Institute of Physics. “3-D tissue printing: Cells from the eye inkjet-printed for the          first time.” ScienceDaily, 18 Dec. 2013. Web. 19 Jan. 2014.

Mearian, Lucas. “The First 3D Printed Organ – a Liver – Is Expected in 2014.”                    Computerworld. 26 Dec. 2013. Web. 19 Jan. 2014.

SCIE 300 Course Blog

Welcome to the SCIE 300 course blog!

Here are few things to make note of before you get started with your posts. First of all, you should read the blogging resources page under the Create menu. This will help you out a lot if you are brand new to using WordPress. On this page you will find video tutorials about writing posts on this blog, adding media to your posts, tagging, and categorizing. You will also find a link to the rubric we’ll use to grade your blog posts.

Next, check out the blogging guidelines. Here you will find the answer to the question: “What are we supposed to blog about?” You can also check out last term’s blog for some additional inspiration.

There are a few important things to keep in mind when blogging. Please do not assume that just because something is online, it is OK for you to use it. For example, unless it is explicitly stated, an image on the internet can not just be copied, saved, and used in your own post without permission to do so. We’ve provided you with a lot more detail about properly using online content, but if you have questions, let us know.

This blog also contains a lot of resources for you. For example, still under the Create menu, there is a list of equipment available for you to borrow and a list of suggested software to use for your projects. We’ve also collected some writing and presentation resources.

Under the Explore menu, you will find some sample podcasts and videos, links that may be of interest or assistance, a list of groups and associations related to communicating science as well as a list of local museums and science centres. The Explore menu also contains a library resources page, which you should definitely have a look at.

Let us know if you have any questions about the blog or would like to see any other resources made available. Or, if you find something that you think would be useful to the rest of the class, tell us, and we can add it to the resources. Better yet — write a post about it!

Happy blogging!

SCIE 300 Teaching Team