Why can we eating raw meat?

 Why can we eating raw meat?

Introduction

I wonder what would happen if we ate raw meat like a caveman. After I have searched, there are many raw meat dishes around the world, for example, Steak tar tare, Carpaccio, etc. Thailand also has Esan raw meat dish, "Koi". Although there have some cultures that eating raw meat, it doesn't mean that eating raw meat is safe. So, let's find out what happens after the meat is cooked.

Method

1.     Bringing the raw meat (beef), then divided to three.

2.     Taking photos (Before cooked)  

3.     Cooking the meat into 3 levels including rare, medium and well-done.

4.     Recording like number 2. (After cooked)

5.     Discussing and Concluding         

Discussion

The reasons why beef steak has rare cooked are about parasites and bacteria. First, beef doesn’t carry many parasites which can infect us, so beef is safer to eat than other meats. Second, beef is extremely dense, and bacteria can’t penetrate and infect the meat. Bacteria can still be on the surface. So, if the surface of the meat is cooked, then the beef is safe to eat.  

There is only beef steaks that has cooking levels. Chicken and pork aren’t extremely dense like beef. So, bacteria and parasites can infect them. The cooking levels of chicken and pork steak should be well-done level so they are safe to eat.

            Bacteria that are associated with beef are Escherichia coli, Salmonella, Staphylococcus aureus and Listeria monocytogenes. All these bacteria are the cause of diarrhea. They can be destroyed through cooking. Safe cooking of beef steak has to use minimum temperature as 145 °F (62.8 °C) with at least 3 minutes cooked per side in 2cm of beef’s thickness.

            I cooked the rare steak for 2 minutes per side but I use 120 °C temperature. The temperature is about doubled of the safe cooking, the bacteria would be destroyed.

           

Conclude

            We can’t eat raw meat because the parasites and bacteria won’t be destroyed. However, we can eat rare beef steaks and well-done chicken and pork steaks. 

Watering plant with grey laundry water can makes plant growing better?

from: http://www.greenandpractical.com/water.htm

Introduction

              Gray water is the waste water which comes from home or office building. There is a belief about a watering plant with gray water. One of them is watering with laundry water. It has believed that can help plant growing better than watering with a water by many people. If it is true it can help me reduce waste water from my room. Moreover, it can help people to save the world by reducing toxic of gray water.

Methodology

This experiment is divided into two parts. First is seeding of a Mung been. Second, growing a sprout of Mung beans.

 1) Seeding  

  1. Roll 2 sheet of Kleenex together.

  2. Drop 4 seeds of Mung beans into Kleenex.

  3. Watering the seed with normal water.

  4. Do step 1-3 again, but change normal water to a gray laundry water.

  5. Compare 2 of a group of seed together; height, growing and number of leaves.

  6. Do step 5 once a day for 5 weeks.

 2) Planting a sprout

  1. Drop a soil into each small flowerpot.

  2. Drop sprout to each flowerpot.

  3. Water each of two sprouts with normal water.

  4. Water another sprout with gray laundry water.

  5. Compare each of a group of seed together; heigh.

  6. Do step 5 once a day for 5 days.

Materials & Equipment

1) 6X2=12 seeds of Mung beans

2) 6 sprout of Mung beans

3) soil for plant saplings

4) sheet of Kleenex

5) a flowerpot

6) water

7) gray laundry water

Result
   In the result, I am only studying about planting or growing a sprout. Seeding doesn't work for watering a plant with waste water because pH levels are too hight.

Baby green No.	Day3	Day4	Day5	Day6	Day7
1	1	2	3.2	3.5	5
2	0.7	2.2	3.5	4.5	5.5
3	0.9	2.3	2.6	3.6	4.7
4(control)	0.7	1.3	1.7	1.9	2.1
5(control)	0.6	1.5	1.8	2.1	2.2
6(control)	0.9	1.2	1.4	1.5	1.5

   This table showed the relative between the number of baby green and
it height in each day.

Conclusion
   The result shows that greywater makes an effect to the baby green. They can growth better in a normal environment. Greywater seems to make baby green growth slowly and it can make baby green die.

Discussion
   Gray laundry water can be used for watering a plant, but it need to untoxic before use. Because of NaOH (also known as sodium hydroxide) in washing liquid has too high pH levels for watering a plant. The normal pH to watering a plant is about 6-8, but pH of grey water from laundry is about 9-10. If you use an untreated grey loundry water to watering your plant, it can kill all your tree. However, if grey loundry water is pH balance, various of nutrient in it can help plant growing better. 

*this is not a picture of this experiment

Did anyone ever catch you looking at them?

Can people notice when someone is staring at them?

Have you ever stared at someone and he/she accidentally looks at you back with no reason? Some may say it is a coincidence, but some say people can feel when someone is staring at. It would be good if it turns out just to be only a coincident situation, so we can still secretly look at people as long as they don’t notice. However, if people can feel if we are staring at, it would be so weird to do such things. Thus, I am interested in doing an experiment to identify the causes of this by looking at people for 30 times and record the results.

Method:

1. Stare at a person who is doing something alone in an area that he/she can see me.
2. Record the result if he/she looks back within 1 minutes or not.

Result:

Half of the people look back with no reason, but the other half don’t.

Conclusion:

From my experiment, I can say that people cannot notice when someone is staring at. It is just a coincidence that they accidentally look back at us. However, the interesting thing is that when I looked at one of my precipitants, he looked back at me in every single time. Thus, this sense of knowing may specifically present in some individuals, not for everyone. Although my experiment tells that most people are not able to know when someone is looking at them, doing that thing is quite creepy. Besides, if you want to stare at someone, don’t let them catch you.

Woramet Somsri 57010017

If you eat banana when stomach is empty, you will vomit

There is believe that if you eat bananas when the stomach is empty, it will make you have the gastroesophageal reflex disease (GERD). Sometimes it makes you have a pregnant or vomit. But many people eat bananas when their stomach is empty or eat bananas instead of the meal. So I want to know that I should eat banana I'm hungry

The experiment

In this test, I need only bananas. I will eat bananas without eating breakfast in the morning at 8.00 because in the morning my stomach is empty. I do this for five days and I check by feeling before eating 4-6 hours. And here is the result.

Day	Feeling
1	Vomit
2	Vomit
3	Feel queasy
4	Feel queasy
5	Feel queasy

This experiment shows that eating bananas when the stomach is empty. We can feel queasy or vomit. Why banana make we vomit? Because banana has a lot of sugar and sugar will make stomach run the digesting juice so much. Sometime digesting juice is too much and we may be GERD. It makes us feel queasy or vomit. However,  it  happens in people who have symptom about stomach such as Gastrointestinal disease. So, if you don't have any symptom about stomach, you can eat bananas instead of the meal.

reference: http://health.kapook.com/view106733.html

Tosita Angkanavisal 57010032

Does sleeping late increase your acne?

Does sleeping late increase your acne?

Pathorn Chuenchujit 57010014

Introduction

                Nowadays teenagers may have an insufficient sleeping caused by surge of works, business or whatever. Some of them says they have an acne problem after they sleep late for a several days or weeks while some didn’t get any effect at all. So I decided to take the experiment myself to proof that sleeping late affect increasing of acne or not.

Method

1.       I’ll record amount of my acne before the experiment.

2.       Do a consecutive late sleeping for several month (3-4 AM)

3.       Record the amount of my acne every week

Result

               

Week (DSS time table)	10	11	12	13	14	15	16	17
Acne	2	3	3	4	3	2	4	5

Conclusion

                From the result. Sleeping late does not has a significant effect on my acne at all, you will be fine of you keep your face clean even if you sleep at 5:00 AM. Your face is going to be fine but not your health.

Playing smart phone before bad make you can't sleep....!?

Playing smart phone before bed make you can’t sleep?

Today, it has many myth in my life. One of them that my aunt told me is about playing smart phone before get bed. She told that it is bad for your eyes and it will make you harder to sleep. I think it doesn’t effect because it will make my eyes feel dizzy that make me easier to sleep.

To prove my myth, I did an experiment by playing smart phone before bed thirty minutes to one hour for 7 days.  

After I do this experiment, the result show me that play smart phone before bed effects very much.

In day 2 and 4 I found that I was harder to sleep. First day, I chatting about homework with my friend and couldn’t sleep after I have finished it for 1 hour. Second day, I read some exciting fighting novel. It’s make me couldn’t sleep about 1 hour, too.

However, in the other days after I watched. I am very easier to sleep but the next morning make me very suffering. I woke up late and I am very hard to get out of the bed. I feel very lazier than the past before I do this experiment.

   

The scientist say that it because of the blue light that created by smart phone. It’s because the blue light is the brightest spectrum that our technology such as smart phone,      television and computer use it for creating bright white light easier. When we use it in the dark room, it will sent a stream of proton from the very bright blue light to your eyes. So, your circadian rhythm which determines when your body releases hormones, is controlled by light exposure take the proton from your eyes. Together with your stress, it will telling your brain don’t secrete melatonin, the hormone that makes you feel tired. So, it make your eyes and your brain very tired but you still awake. In conversely, some of people can sleep easier by the melatonin that from your eyes and brain tired more than the photon and you’re feeling encourage. You will be very hard to wake your guys up.

So, you shouldn’t play it before getting bed and make your guy relax for good sleeping.

Reference

http://www.sciencealert.com/watch-here-s-what-happens-to-your-body-when-you-check-your-smartphone-before-bed

http://www.businessinsider.com/why-its-bad-to-use-your-phone-before-bed-2015-7

Shampoo mixed with liquid soap can make your hair fall off

            Introduction

            Now a day, there are many types of Shampoo and liquid soap that can wash hair is one of them. It convenient to carry to travel but its price is very expensive. However, I want to use it. I make it by mix shampoo and liquid soap but many people tell me “Soap can make your hair fall off”. So I want to know what will happen after I wash my hair with shampoo mix with liquid soap.

           

Method

1.     Observe the rate of hair loss before wash hair by shampoo mixed with liquid soap for 7 days

2.     Wash hair with shampoo mixed with liquid soap every day and Observe the rate of hair loss again

3.     Compare rate of hair loss between before and after wash hair with shampoo mixed with liquid soap

Result

day	1	2	3	4	5	6	7	total
before	1	3	0	1	0	0	2	7
after	2	0	1	0	1	1	0	5

1.     Hair falls before use shampoo mixed with liquid soap 7 piece

2.     Hair falls after use shampoo mixed with liquid soap 5 piece

Conclusion

From the result, shampoo mix with liquid soap doesn’t cause of hair fall off. The number of hair fall of when use shampoo mixed with liquid soap is less than before I use it.

Although shampoo mix with liquid soap doesn’t cause of hair fall off, it has others effect such as hair stiff. It causes off soap have pH bass.

Peeranut    Jitsilsophon         9     

  

Exercise before sleep causes sleepless?

Introduction

        Exercise is an activity that can make your strong body and healthy. Moreover, exercise strengthens of muscle, circulatory system, immune system and metabolism. It can prevent many diseases such as cardiovascular disease, diabetes and obesity. Nowadays, people want to exercise for their healthy but they don’t have time to do because they work all the time. Most people choose to exercise before they sleep and this activity causes them sleepless. Thus, I want to know if I exercise before sleep, I will sleepless or not.

Methods

1. Exercise by playing Hula Hoop for 20 minutes before sleep time.

2. Record the time that I sleep.

3. Do this experiment for 5 days.

The results

Time	Day 1	Day 2	Day 3	Day 4	Day 5
Start playing Hula Hoop	11.50 p.m.	0.10 a.m.	11.50 p.m.	11.50 p.m.	0.10 a.m.
Stop playing Hula Hoop	0.10 a.m.	0.30 a.m.	0.10 a.m.	0.10 a.m.	0.30 a.m.
Go to sleep	0.20 a.m.	0.45 a.m.	0.30 a.m.	0.20 a.m.	0.40 a.m.

Conclusion

        From the results, it shows you that the belief “exercise before sleep causes you sleepless” isn’t true. After I stopped play Hula hoop, I will go to sleep after that approximately 10-20 minutes. It’s maybe true for some people but it’s not true for me. I think exercising before I sleep makes me tried and sleepy.

by : Natthacha Vaewburt     57010029