“White Mars”: NASA to use Antarctica to Study Astronaut Behavior

Space missions begin long before lift-off. In its preparation for America’s first Journey to Mars, NASA will collaborate with the Nation Science Foundation to study effects of isolation, confinement, and extreme environments on people. These effects, known by the acronym ICE, that astronauts will encounter on their expeditions to outer space can be difficult to simulate – in particular, the extreme environments. Antarctica provides the closest setting to what the astronauts will experience, and as such is the best location for the behavioral studies to take place.

Training camp near McMurdo Station in the Antarctic.

Training camp near McMurdo Station in the Antarctic.

Dr. Candice Alfano developed an initial study that will analyze Antarctica’s effect on the behavior of people working there for extended periods. Dr. Alfano is a clinical psychologist, Director of the Sleep and Anxiety Center of Houston, and psychology professor at the University of Houston. Her and her researcher team hope to discover the greatest sources of stress that the study participants will face, and thereof create a checklist to detect early signs of behavioral changes brought on by ICE. The checklist will help ensure that proper intervention can take place before adverse negative effects occur. NASA considers astronaut well-being a top priority primarily because the space explorers need to be in good health to both complete their missions and problem-solve when things go wrong.

https://www.youtube.com/watch?v=wjgTeIWut4s

The results will have other implications, including aiding deployed military personnel who are more likely to suffer mental health disorders than civilians.

These efforts echo UBC in addressing mental health issues on campus, and hopefully the data can eventually help stressed university students.

Navpreet Ganda

The Solution is Sugar!

The farming industry requires an immense amount of labor and money. However, there are many factors that come into play when producing a healthy crop. Focusing on rice agriculture, examples of harmful disease that cause loss of crops are blast and brown spot.

Blast disease is the most important disease that has been affecting rice crops worldwide. This disease infects rice crops by creating lesions on different parts of the plant, such as the leaves, seeds and even roots. The lesions lead to cell death and eventually cause death of the leaves and entire plants. The following video demonstrates the impact of the rice blast disease.

Credit: This Week in Louisiana Agriculture, YouTube.

So, what is being done to protect crops?

Since rice crops are a predominant food source for a vast population around the world, it is important to keep these crops healthy. One method of controlling disease in rice crops are fungicides, however, they sometimes have negative effects on the environment and human health. For example, the fungicide Mancozeb creates concerns in human metabolism and respiration.

Fungicides are not a long-term solution! Pathogens are able to become resistant to fungicides overtime and infect crops. The production and use of fungicides is costly and to have them become ineffective is a waste of both time and money. Due to these effects, research is being conducted in order to find substitutes for fungicides.

What have researchers found?

One solution is sugar! Chitosan specifically, is a sugar that can be found naturally in the shells of crustaceans and is renewable.

Could Chitosan be the solution to the long-lasting issue of using fungicides in agriculture?  The most important benefit of Chitosan is that it is naturally present in the environment and therefore is not as harmful as using chemicals. Secondly, Chitosan is abundant, accessible and not nearly as expensive as producing chemical fungicides — which are only short-term solutions.

How does Chitosan work?

Chitosan possesses properties that help protect plants and promote antifungal behaviour. A study proposed that Chitosan inhibits the access of fungi to essential nutrients of plants, preventing the growth of fungi.

Another study concluded that Chitosan modifies the outer membrane of pathogens, destroying their ability to attack plants and therefore making crops less susceptible to fungal virus and disease. Along with preventing fungal disease, Chitosan also activates defense mechanisms in plants. The dual action of Chitosan makes it an ideal substitute for fungicides.

Is Chitosan a long term solution?

I believe that the Chitosan solution definitely has benefits such as, being renewable and inexpensive but it should be tested extensively to prove success. Research has shown several qualities of Chitosan such as antimicrobial properties against viruses, bacteria, fungi and insects, which further confirm it as a good solution for protecting rice crops. Despite these findings, Chitosan should be tested thoroughly before being put into practice to avoid putting crops at risk of failure.

Pavneet Virk

Suicide Statistics: Why men are more likely to commit suicide?

Last month, I read a scientific article, “Stigma in Male Depression and Suicide: A Canadian Sex Comparison Study”[1], published in the Community Mental Health Journal. This study was led by UBC nursing professor John Oliffe and his team, and I was interested in discovering more about this field. Research has shown that there is a positive correlation between suicide and mental illness. Although past statistics report lower rates of depression among men than women. In most countries, the suicide rate for men is three times higher than the rate for women. Hence, I want to find out reasons behind high suicide rate for men.

Suicide Rate by Sex, 2014 Suicide Rate by Sex Graphic

Data Source: National Vital Statistics System-Mortality(NVSS-M), CDC/NCHS; Bridged-Race Population Estimates, CDS/NCHS and Census. [4]

My first hypothesis is that men are not active to seek for external help when they are mentally ill. There are different help for mental illness, such as therapy groups, counselling services or prescribed treatments. Some researchers have said that women are more willing to tell their friends how they feel or seek for external help when they get depressed. On the contrary, men are more likely to deal with their problems by themselves because it is difficult for the men to express their feelings. Since these external treatments can help people eliminate or reduce their suicidal thought, men have a greater probability of attempting suicide than women do.

[2]

Another hypothesis is that men are more impulsive than women. Scientific study has shown that men take fewer things into account before they take action. For example, men tend to get themselves drunk before they attempt suicide, and they cannot make thoughtful decisions with the unconscious mind. Since most men do not care about the consequence of their suicides, they will not make decisions with properly thinking. Moreover, when men actually commit suicide, they use violent methods that do not allow the second rescue. Many women prefer the methods that are able to preserve their appearance. However, men do not have any preference so they tend to choose firearms or hanging, which lead to fatality directly. For instance, in the UK, 58% male choose hanging, strangulation or suffocation to end their life.
I think that mental illness has a negative impact on both men and women. It is important for people to visit their physicians regularly or join in suicide prevention programs when they have extreme suicidal thoughts. Since men have more intention to commit suicide, we should care more about our male friends or family members than before, and I hope suicide rate will decrease in future.

[3]

Reference:

  1. Oliffe, John L., et al. “Stigma in Male Depression and Suicide: A Canadian Sex Comparison Study.” Community mental health journal 52.3 (2016): 302-310.
  2. Wall Street Journal. “College-Counselling Centres Try to Reach More Men.” Online video clip. Youtube. Youtube, 21 September  2015. Web, 9 October 2016.
  3. Watchwellcast. “For Those Considering Suicide.” Online video clip. Youtube, 13 May 2013. Web, 9 October 2016.
  4. Suicide Rate by Sex 2014. Digital Image. Health People 2020. A Federal Government Web site managed by the U.S. Department of Health and Human Services • 200 Independence Avenue, S.W., Washington, DC 20201 • © 2014. Web, 10 October 2016.

Xi Chen

32 Pearls

If not the hardest, teeth are one of the most solid parts of the human body. There are four different types of teeth in our oral cavity (Figure 1) including incisors, canines, premolars, and molars. Both individually and as a collective they are responsible for many different functions in the human body.

illu_mouth

Figure 1, Oral Cavity

https://en.wikipedia.org/wiki/Mouth_assessment

The main function of teeth is mastication. When we eat food, our body should process it and make it ready for digestion, and the first step in digestion is to break down the food by teeth into smaller pieces. Incisors usually cut the food, then canines with some help from premolars tear it, and at the end premolars and mainly molars grind the food and make it ready for swallowing. Without our teeth, we would not be able to fulfill this critical function, which would as a result lead to many problems with digestion.

The second function of teeth is that they aid in pronunciation. In other words, they help us to pronounce words properly. As we grow up, we learn to pronounce with the use of our teeth and the help of our tongue. Those who lose all or some of their teeth cannot pronounce the words accurately so will have serious problem in speaking.

cc7333d9fe3c092da806bda4bea27ae2

Figure 2, Facial Muscles

https://www.pinterest.com/pin/468022586248651317/

Teeth also have a direct influence on our appearance, therefore they have an important aesthetic function. Teeth support the facial muscles (Figure 2)and other tissues around them, thus the shape and form of our face depends, to a great extend, on our teeth. Having clean and normal teeth will create a nice smile, and it can have direct influence on the personal and professional life of every individual. For example, possessing a nice and beautiful smile has direct impact on professional life of many celebrities.

https://www.youtube.com/watch?v=uHUyg94JSkg

It is clear that teeth have an important role in our lives, and it is beneficial to take care of them as they are as precious as pearls (Figure 3).

white-teeth1

Figure 3, Teeth

http://treeoflifehealthcoaching.com/service/blog/2016/05/10/teethwhitening

Welcome to Scie 300 Blogging!

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 one of last term’s blogs 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 suggested software to use for your projects. We’ve also collected some writing and presentation resources.  Basic audio/visual equipment can be borrowed from SCIE300. Contact the course coordinator for more info.

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. Finally, there is a bookshelf that lists relevant books that are on reserve for you in Woodward Library.

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!

The Science 300 Team