Science Project Work 2026 : English Program MWS | Part3

[00:00:00]takes a closer look at environmental shared solution. The project is titled comparative study of oil removal efficiency using active carbon spent coffee ground and sawdust at various temperatures.

[00:00:16]>> I do love a good eco-friendly project.

[00:00:19]Let's welcome our next set of presenters to the stage.

[00:00:29]Let's hear it from them everyone.

[00:00:48]>> Uh good morning judges and audience.

[00:00:50]We're very excited to present our project was uh good sorry good afternoon judges and audience we're very excited to present our project but firstly let us introduce ourselves my name is my name is Rosen >> my name is >> my name is Kamusa >> and our project it's about comparative study of uh oil removal efficiency using activated carbon spend coffee grounds and sawdust as at various temperature.

[00:01:26]Uh to understand why we choose this project, uh first thing we have to look at the severity of the oil pollution.

[00:01:34]Every day uh oil spill from factories, um cars, kitchens goes into our water.

[00:01:42]This form a thick layer of oil on top of the water. Uh so this harm the fish because no oxygen can go through those thick layers. So it's harm marine um animals.

[00:01:58]So um so finding the way uh easy and cheap way to uh find a way to solve this problem, it's a very big deal.

[00:02:15]Uh so this uh bring us uh uh to our approaching activated carbon is commonly known for the absorbing oil but it's kind of expensive. So we want to try something new. We want to find the another substance that can absorb oil. Uh we the one we the other one we chose is sawdust and spen coffee grounds. We want to know if these two can beat or uh match with efficiency of the activated carbon or not. We aim to find uh the best substance that going to absorb the oil.

[00:03:03]Uh so we have four main goals in our project or known also known as objective. First is to evaluate the oil absorption performance of spent coffee activated carbon and sawdust. Second is to deter deter the effect of water temperature on the oil absorption uh efficiency of each substance. The third is to evaluate the absorption performance uh of each absorbent for vegetable oil use cooking oil and the motor oil. The last is to identify the absorbent that provides the highest oil removal efficiency under the experimental conditions.

[00:03:46]System of experiment. First step is preparation of absorbent and oil water mixture. First we need to prepare 10 cup of absorbent substance such as activated carbon spice.

[00:04:02]Second, we need to prepare water at 3D centimeter such as 25°, 50° and 75°.

[00:04:10]Third, we need to prepare 20 g of oil contaminants such as vegetable oil. Use cooking oil and motor oil. Second step is mixing and absorption process. For each oil type, fill three separate cup of water at each design temperature and add each absorbent substand into the respective cup and stir the mix to ensure proper contact and allow the mix to sit for 30 minutes to undergo through.

[00:04:46]Third step is filtration process. After the 30 minute retention time, pour each mister into the filter setup and allow the mister to filter completely for 1 hour.

[00:05:03]Fourth step is drying and data collection. After 1 hour, collect the filter residues and leave them to air for 4 days. And after 4 day weigh the dry residues using a scale to analyze and compare the capacity at each material result at 25 Celsius.

[00:05:36]So does show the best performance in liquid separation and retention. Spin coffee ground mang and activated carbon was the least activated effective sorry.

[00:06:00]So does absorb liquids effectively through capillary action while activated carbon is better at absorbing molecule than absorbing liquid.

[00:06:24]Cheap and biodegradable material like sawdust are more practical and cost effective than expensive high tech uh sorry alternative overall saw dust was the best perform making it the most suitable material of Real world industrial application.

[00:07:12]Second result at 50° C. So that is still the best material for oil absorption and retention. I'll performing uh spring coffee ground and activated carbon the discussion meaning so that effortly trapped in maker's hot oil via capability action realize activated that carbon f stop the molecule from sticking implication the mar is stable and but definitely so that is perfect for high heat envelopment like in Thailand and is not expensive the verdict a clearly victory so does so is a robust So there's a robot champion that stay effective even with the heat turn up.

[00:08:36]At 75 Celsius does outperform all other immediate liquid separations and prolong retention. While spin coffee grounds show competitive retention with vegetable oil and activated carbon underperform meaning saw fibers hold strong as oil thins in heat when coffee grounds blond better with vegetable oil and activated carbon fields. Implication perfect for commercial kitchens and biode plants to clean hot spills immediately without cooling. Verdict: Sawdustes and all temperature champion and spin coffee grounds are a great heat activated secondary options.

[00:09:21]Conclusion: Evaluating sawdust when coffee grounds and activated carbon across temperature and various oil types. The study found that sawdust is the most effective material for immediate liquid extraction while also analyzing long-term or retention.

[00:09:38]Furthermore, this performance saw does consistently perform well access temperatures, proving that this organic waste material successfully handle realistic waste water conditions and offering a cheap eco-friendly way to clean up oil spills. Thank you for your attention. Uh, and we're ready for your question.

[00:10:14]So based on your conclusion, best is the sawdust, right?

[00:10:18]>> Yes.

[00:10:19]>> May I know which material is your activated carbon coming from?

[00:10:27]Because it's an activated carbon. It must be coming from somewhere else.

[00:10:38]We bought it from online. The you bought it online and you did not bother research on where is it coming from because the origin of your activated carbon may affect the capacity of it absorbent capacity.

[00:10:56]That's why you got that kind of result.

[00:10:59]You did not right. You did not like included. Yeah, I got it. Okay. Now, uh I'm sure you made your research. Yeah.

[00:11:08]It's stated in your RRL. I did not read all like of the four of three, right? Sawdust.

[00:11:17]>> Yes. Three substances.

[00:11:18]>> Three substances, right? Three different substances. Have you ever encountered in your research that the best is activated carbon? Have you encountered that in your research that the best absorbent for oil removal which is being used which is being applied in real world is activated carbon.

[00:11:41]uh we have put it that actually it's commonly used for the uh cleaning up the oil uh through uh based on the uh efficiency of the oil absorption.

[00:11:58]>> Okay. Have you encountered also what's the reason why it is commonly used?

[00:12:03]There must be something in the activated carbon why people are using it.

[00:12:11]We'll put that in mind but we haven't did the research on that that why is activated carbon it's commonly used. We just uh search that it's common.

[00:12:24]>> Yeah. And what should be in your uh material that would have an accurate like absorbent capacity? What what what are the characteristics of the materials that you are looking for so that it could remove oil?

[00:12:42]What are in the sawdust? What are in the what's the other material? Sodas, coffee grounds. What are in them that made them capable to remove oil?

[00:12:56]>> Uh in my opinion, it's the capillary, the small holes in that substant you know like the cap something in there I want to know what is that something in there because I might be able to think of doing further research that I'll going to use >> uh in the presentation I put I read it and I put that the capillary action it's like the small holes in each substance that you know um the more ho hole it is it's can absorb like more oil in it.

[00:13:39]>> Okay. So the bigger the surface area of your material because it has more capillaries or you're choking is better.

[00:13:48]>> Would you agree on my statement?

[00:13:50]>> I would say it's positive.

[00:13:55]>> Okay. Thank you Sherry.

[00:14:01]Hello, I'm five. Hi.

[00:14:02]>> Uh, I just want to read an excerpt in your methodology after um after you had an absorption. Uh, the absorbent was removed using a funnel lined with coffee filter paper and allowed to draw to drain completely. Can you remember this step?

[00:14:21]>> Oh, yeah.

[00:14:22]>> So, how did you make sure that no oil was removed by the coffee filter itself?

[00:14:28]Because if you had if the coffee filter had removed uh made a contribution to the removal then it would be a large uh there would be a uh huge uh error on the on this study. Uh yes we have weighed the mass of the filter before of it and the after that we put and we already deduct the minus that weight >> and >> of before >> and what was the result like was there a significant difference >> um >> when you between before and after weighing?

[00:15:10]Can you repeat that again?

[00:15:12]>> Uh, you just told me that you weighed the coffee filter J.

[00:15:16]>> Yes, we have.

[00:15:16]>> Before using and after using uh before and after filtering the absorbance. Yes.

[00:15:24]>> I'm sorry that it's my mistake. We uh only waited before the use.

[00:15:33]So, how did you make sure that the coffee filter didn't remove oil by itself?

[00:15:45]>> Is there anything that we missed?

[00:15:50]>> I think that part is our mistake. We haven't thought of that that we should um measure the after that cuz filter might absorb some of the oil.

[00:16:02]Yeah.

[00:16:03]>> All right. Thank you, Zen. Uh, may I know what plant or tree type was this sawdust made of?

[00:16:13]>> The type?

[00:16:14]>> Mhm. It was sawdust. What was the plant or tree type it was made of?

[00:16:21]>> How did you get the sawdust in the first place?

[00:16:24]>> Uh, we go to the shop that sells wood.

[00:16:29]And do you know what plant species the wood miss the wood is?

[00:16:32]>> I'm sorry. I know it in Thai but I don't know it in English.

[00:16:36]>> Oh. All right.

[00:16:40]Uh just my last my last question. What made sawdust durable to function up to 75° C?

[00:16:48]Do you have any idea to share what's in the sawdust that it can still function up to 75% at 75° that it bested out other absorbance?

[00:17:00]What do you think made it durable?

[00:17:07]>> The reason that makes s Um maybe uh maybe because um wood itself it doesn't I compared to three substand I in my opinion in my opinion I think wood is like have has uh it has effect bas bas on the temperature, but it has the highest.

[00:17:50]No, imagine at the same temperature. I think the wood uh the sawdust will affect the least cuz it has it has to have like temperature to affect the sawdust than rather than to other.

[00:18:09]>> Thank you. Now, Okay, I ask you this this one. Okay, you do uh look like uh the practical work.

[00:18:25]But uh before before you do the practical word, you have to start with the theory work.

[00:18:33]But I I want you to to show right the t look like uh chemical formula right chemical formula or uh subural formula example right example okay example uh you you have AB right AB when you add C you can separate A and B like like this one okay you you just if you don't have you and give some short short answer.

[00:19:10]>> I will keep that in mind. Yeah, of course. For the future project.

[00:19:19]>> Hello.

[00:19:21]>> Hello.

[00:19:22]>> So here's my question.

[00:19:26]So why activated carbon absorb oil more effectively than The coffee coffee coffee grounds why activated sodas more effectively to absorb oil than the coffee grounds.

[00:19:47]>> I'm sorry. Can you repeat that again?

[00:19:50]>> Why activated carbon sodas is more effectively in absorbing oil than the coffee grounds?

[00:20:01]actually very common. It's the least has the least uh the rank is sawdust spent coffee grounds and activated carbon. Activated carbon was the least that absorbed the oil. Have you tried this um uh project in a contaminated area contaminated like oil steel?

[00:20:31]>> Yeah. Um I mean we >> have you conducted a research in putting a sodas in a contaminated area like there's a oil spill because your project we can use this to clean the uh the clean to clean the water right water treatment.

[00:20:55]>> Yeah.

[00:20:58]Have you tried? Have you conducted any research?

[00:21:03]>> The research on that that other people did it.

[00:21:05]>> Yes.

[00:21:07]>> Uh we have but we haven't found the one that um associate with the temperature.

[00:21:15]That's only like absorbing the oil with um the substance, but I haven't found the one that um have a temperature associated with.

[00:21:26]>> All right. So how did you gather your data?

[00:21:29]>> Got our data?

[00:21:30]>> Yes.

[00:21:32]>> So you just uh do your project inside the rooms.

[00:21:40]You you didn't conduct it outside.

[00:21:45]>> We didn't use like the real contaminated water. We uh we have water the same amount for everything that it's uh a tap a tap water the same tap water for every uh every set of the experiment and we put the different type of oil. It's not the real contaminated water but we assume that that is the contaminated water by using like Are you seeing different? Oh yeah.

[00:22:21]>> All right. Thank you, girls. Well done.

[00:22:42]Using coffee grounds and sawdusters for oil removal. This is brilliant and sustainable. Thank you group two.

[00:22:52]>> Up next we have the final presentation from Mach 513.

[00:22:58]This group focused their research on something very close to home. The project is titled site physical chemical assessment of household tap water in Bambon and Dong area Bangkok Thailand.

[00:23:15]and essential study for our local communities. Let's show some love and welcome to Sino.

[00:23:27]Take it away guys.

[00:23:37]Good evening judges. Today we are going to present about the physical chemical assessment on tele in Bangkok Bang Bang and Jong area.

[00:23:50]My name is Ha.

[00:23:51]>> My name is >> My name is Dagan.

[00:23:55]>> My name is T.

[00:23:59]>> First of all, water is one of the most important resource in our daily life. We use water every day for drinking, cleaning, cooking and many other activities. However, many people don't know that the tap water in their homes is competitive.

[00:24:17]So that's why we are going to uh present about this project.

[00:24:24]Next I will talk about the background of our project. Where's Let's start with the cause of the problem. Tap water is clean before it's sent to our homes, but the quality can be changed a bit because of the dirty pipes, dirt or the sediment in the water system. So it is important to check the water regularly and the next thing and the next thing is the effect of the problem.

[00:25:27]If water is If the body quality is not that good, it may look a bit cloudy, have a strange smell or taste.

[00:25:40]So that's why we are going to solve this problem.

[00:25:49]So how we came up with this project?

[00:25:53]We chose this topic because we want to solve the problem that not everyone had access to the clean water and our our project study uh water quality and help people understand its condition and also encouraging awareness of the water quality.

[00:26:18]Uh our next thing is the objectives of the project. The first is to assess the physical chemical quality of the water by measuring pH, alkalinity, TDS, EC and water appearance. And the second is to determine if temperature means acceptable water quality standard. And the third one is to evaluate the suitability of tap water for everyday use. And the last one is to promote promote awareness of the water quality.

[00:26:54]And next we will talk about the chemicals and appetus.

[00:27:01]First we prepare four beers containing a water samples.

[00:27:17]Uh the pH meter the pH meter the magnetic stirring it hot 50 ml per and 25 pipette for measuring the water samples when it disting 1,000 ml volutric sulfillic acid solution potassium col solution for keeping the pH meter TDS EC meter mix.

[00:28:01]Next is how we measure the pH of the water sample.

[00:28:10]The experiment was done by for example that we collecting by our members house and we measure the pH at a specific time which are 7 a.m. 12 a.m. and 5:00 p.m.

[00:28:46]Okay.

[00:28:48]And this is for and this step for the pH.

[00:28:59]First we prepare four beers and then fill them with 15 ml of tap water. Then wash the pH meter with distilled water and submerge the pH meter into the first water sample.

[00:29:18]Then then so the pH meter lightly. Then we wait until the result is stable and then we know the result.

[00:29:32]We'll do the full time. But this fourth time and not for the reason and the next is acceler.

[00:29:58]We use uh four samples which is the same as the previous one and we measure it for 5 day by transfer 50 ml of t water into a beaker.

[00:30:18]Then we the sample while measuring until the pH reach 20 reach 65 65.

[00:30:29]Then we slowly added sulfuric acid until the end point was reached 4.5.

[00:30:37]And then we record the amount of sulfuric acid used and and calculate the alkalinity using formula 1,00 50 m of water time the mill that we use for the acid. And then we repeat this experiment four times.

[00:31:05]And for each sample we average the result to improve the accuracy.

[00:31:16]And the third is TDS and EC test.

[00:31:21]The samples are always used the same experiment.

[00:31:27]We measured the TDS and EC test around the same time as the occurren test.

[00:31:37]Firstly, we prepared four beers for our water samples. Then fill the water samples at least 75 ml.

[00:31:51]Next, we open the TDS and EC meter.

[00:31:59]Then we then we then we wash it with this building water.

[00:32:12]Then we next we turn on the TDS and EC motor and press mode bottom.

[00:32:31]Press mode bottom until it reads ppm.

[00:32:36]Then we put the the meter into the beaker, the first beaker.

[00:32:43]And we lightly stir it.

[00:32:48]Lightly stir it until the PBM is stand stable.

[00:32:55]Once the PBM stable, we take out the meter and watch it with the spilled water.

[00:33:06]Then we do the some for the rest of the beaker.

[00:33:16]Get her. Then get her. They say the result.

[00:33:25]Then we measure. Once we measure the TDS, we wash and change the unit to US CM for the AC.

[00:33:39]Then we do the same as for the EC.

[00:33:43]We do this experiments four times per samples since the time period is the same as the occl test.

[00:34:09]We need to do the experiment 240 times in total.

[00:34:20]Once we measuring the TDS and EC test for all the samples of the all the day we wash it with the dismissing water and turn off then turn off and close it.

[00:34:44]Once scattering the result, we found the revenge average.

[00:34:58]Next, the fourth and the final experiments is the appearance test.

[00:35:04]We each did the experiments at home.

[00:35:11]The test was only done one time per day.

[00:35:18]We did the experiments the occas.

[00:35:31]So first we grab a glass bottle. Then we filled with a tap water.

[00:35:39]Then we use the light.

[00:35:42]Then we shine a light at the bottle.

[00:35:48]Then we observe the water experiment.

[00:35:56]Then if we want you can take a photo of the bottle and observe the water like this picture.

[00:36:08]And we do the same experiments five day per week for three weeks and we gather the result and sub describe the result overall.

[00:36:31]Okay. Now for the results of the experiments.

[00:36:35]So the first experiment is the pH test.

[00:36:38]The result shows us that the water samples have different pH and temperature.

[00:36:43]The discussion what do they what do the resource mean?

[00:36:48]The results mean that the the pH and temperature is different is different at different specific times of day. What do they imply? They implied that that that the pH interterator can change over time based on the line graph.

[00:37:12]Is it a good or bad results?

[00:37:15]Overall, the result is in the average standard range. So which mean is is good.

[00:37:24]The next experiment result is the affinity test.

[00:37:29]The result shows us that the pH samples uses have different affinity because of the because of the amount in milliliters of sulfuric acid used to calculate the migrams per liter of calcium carbonate.

[00:37:53]Discussion.

[00:37:54]What do the results mean?

[00:37:57]It also mean that that the accent is different every time you do the experiment.

[00:38:08]What do they imply? They also imply that the ugly is different for each sample based on the line graph increasing and decreasing.

[00:38:24]>> Is it a good or bad results?

[00:38:27]Overall the analytic resource is in the standard range which means it is good.

[00:38:37]The third experiment is the TDS and EC test.

[00:38:42]The result shows us that the water samples each have different TDS and ECS.

[00:38:49]However, sometimes two samples can have the same TDS but different ECs and two samples can have different TDS but same EC.

[00:39:02]Discussion what do the results mean? The results mean that the result the water sample have different TDS and DC.

[00:39:17]What do they imply?

[00:39:20]They they imply that the TSNC is different every week from the line graph being different every week.

[00:39:32]Is it a good or bad result? Overall the result is in the average standard range which mean is good.

[00:39:43]Finally is the appearance test.

[00:39:47]The research shows us that the tap water in each of our members houses have different appearances and cleanliness.

[00:39:56]However, the individual results for each time for each water is consist consistent.

[00:40:07]This question, what do the results mean?

[00:40:11]The results mean that each that the water of appearance of each everybody house is different.

[00:40:21]What do they imply? They would just imply that that everybody's house have different water appearance and cleanliness based on the comparison of of our the results in the green.

[00:40:43]Is it a good or bad result?

[00:40:46]Overall the top water appearance is relatively clean.

[00:40:55]Then for the conclusion, so conclusion one is tile has successfully observed top water.

[00:41:14]Physical can be called quietly by testing the pH ality to the end.

[00:41:23]and water appearance. Concluding two title have been able to config confirm that the result have meant a acceptable water standard.

[00:41:45]Concluding three title has evolved that the water is safe for for everyday use based on it physical chemical property.

[00:42:02]And the last the conclus conclusion four we use the result of this project to promote awareness of top water equity.

[00:42:20]>> Now you're ready for your judges.

[00:42:25]>> Thank you for your presentation student.

[00:42:28]Okay. Are are you back right? You back to the result.

[00:42:32]You back two result. Okay. The first result you have four results. Okay. Yes.

[00:42:39]And the first, right? The first. Okay.

[00:42:41]Why? Why you know that are pretty good.

[00:42:46]Good, right? Pretty good, right? The result is results are pretty good. Why you know that?

[00:42:55]Okay. From your your presentation. Okay.

[00:42:58]In your presentation you have to show uh the quality lens.

[00:43:05]Okay. You you know that okay you have to show the pH it should be example is a six to seven is pass. You have to yeah you have to get a information from ministry you know ministry of property health. Yeah you have to show you your slide. Okay. But right now you can answer the you answer the lens you pass right this one pass quality lens. No >> answer quality lens of the PH.

[00:43:58]Oh, so the average of the quality of uh of the water is for example is around 6.5 to7. So if it uh we consider it as good >> okay as as ever okay you have to get the information from ministry of the public health okay thank Thank you. Thank you.

[00:44:47]>> Great data and excellent analyzis. Thank you group team. That wrap up our Matio 513 presentation.

[00:44:55]>> But the innovation doesn't stop here.

[00:44:57]It's time to move over to our oldest senior students from class 613.

[00:45:03]>> Starting off the material 613 segment.

[00:45:07]We have a project focused on medical technology. It's titled development of a smart tourniquet system using pressure sensors and realtime monitoring technology.

[00:45:22]This sounds like something straight out of a sci-fi hospital. Please welcome our next presenters to the stage.

[00:46:05]Good afternoon everyone. We are from 613.

[00:46:10]I am 13.

[00:46:18]So our topic is development of stomach to system.

[00:46:26]Let's proceed to next slide.

[00:46:39]So we are talking about a background of our project today. The traditional tournic kit rely on the and another of our group member is Sorry. So, uh the normal tooth is have uh heavily impact from saving life from losing so much breath like it's let's call it bleeding.

[00:47:26]However, it has one big problem which is We cannot measure it directly like we need to guess the actual value of the tightness or the looseness. So the effects of looseness is if it's too loose it cannot stop the bleeding. So it may cause to death or if it's too tight it can damage to the muscle and the nerve and even the patients can lose their arms or legs. So we want to make this project by combining those functions.

[00:48:24]So replace the gas with the M technology. So those function that I have mentioned is first sensors, timer and alarm and the last one is Wi-Fi monitoring.

[00:48:38]What sensor do? Sensors can have the measurement can uh like more accurate and the target alarm can see how long have it been on.

[00:48:54]Last one is Wi-Fi monitoring. We can look at the website of the tuning kit like in a real time and then let's look at our project goals.

[00:49:17]The first goal is to build a smart junate with pressure and time tracking.

[00:49:24]The second one is to test the accuracy and the Wi-Fi system of our material.

[00:49:33]And the last one is to keep cost low. Uh especially around 100 I mean sorry 1,400 B for affordable safety.

[00:49:52]These are the step of building and preparation.

[00:49:56]So firstly we design our equation using AI uh computer AI design software or you can call CD and step two you uh 3D print it out uh about the question.

[00:50:13]as the tree.

[00:50:16]You prepare the pressure cup and install the pressure sensor.

[00:50:24]Step four, assemble the micro ship. Oh, micro control circuit and connect the temperature sensor.

[00:50:36]Step five, install LED monitor displays for the picture. Then step six, uh you uh we program the system.

[00:50:52]Step seven, we integrate the Wi-Fi model and connect to real time monitoring uh website.

[00:51:04]That's the V. We test it at Caribbean.

[00:51:08]The P measurement.

[00:51:10]This one.

[00:51:20]Next one. Let's look at the emergency testing. The first one is to test a pressure sensor accuracy.

[00:51:28]Before building a whole system, we need to make sure to the correct number of the measurements such as the tightness or looseness by using the base of the sensor that we have placed it on the our smart.

[00:51:50]This we are using the data. So the time we create a calibration to turn the electric to a pressure value.

[00:52:10]We tested uh data transmission dist up to meters evaluating transmission agency and packet loss to ensure the reliability during emergency transportation.

[00:52:31]So about the timer system we test the system while running for uh for 15 minutes.

[00:52:41]Then we we compare to digital stopwatch and also we increase pressure to 180 mmg to test the system.

[00:52:57]Finally, we let the timer run past time uh limit to check if it's run. Okay, we evaluated our sensor capacity to read real time heart rate from the subject.

[00:53:34]This one is our result from the testing the pressure and also the web dashboard.

[00:53:48]Okay. So the college screen instantly shows the light pressure and left time the pressure and LED lights trigger immediately when the pressure is increased or the decreased.

[00:54:07]Another one is Wi-Fi web dashboard receive live data with almost zero delay.

[00:54:20]Well mode maintain a robust connection with the result of average transmission latency under 1.5 seconds and zero packet loss in 10 m range result of the timer system.

[00:54:43]The timer works perfectly fine and it work correctly and with no delay.

[00:54:52]Uh the LED turn on when the pressure is reach to the limit and once the pressure exit 180 the limit must reach uh the button closer and then blinking LED lights. We will turn on and find the user.

[00:55:27]Our power sensor is successful detect.

[00:55:31]However, verifying pulse during full arterial occulation requires medical training hours as access uh was limited during our development. We still wait for hospital to accept our request.

[00:55:56]Here are the conclusion.

[00:55:58]So uh the smart trunate works work successfully and all the of the functional objective exactly posy real time pressure tracking like um mobile monitoring and instead audio ratio warning alerts to uh minimize human.

[00:56:37]Furthermore, the integrate Wi-Fi module and remote uh monitoring web dashboard function perfectly.

[00:56:58]Hello boys. So your project is uh I like it. So here's my question. What is the ideal pressure range for a tourniquet to stop the uncontrolled bleeding?

[00:57:13]Do we have a pressure range?

[00:57:18]Uh we said the pressure about 188 mm machine. So the user can detect how how much pressure apply.

[00:57:34]>> How did you test your tourniquet?

[00:57:37]Uh uh which part of testing a pressure timer or >> have you tested tested this to a um patient?

[00:57:56]>> You cannot tested it on patient since uh the pressure is really high. It can crush the patient arm. So we need the medical training arms to use. But however we have asked for the medical arms from the hospital or we are still doing we are still waiting for they to accept our request.

[00:58:21]>> All right. Thank you boys.

[00:58:25]>> Thank you sir.

[00:58:31]My test Thank you. Thank you boys. I would like to inform everyone that we still have three more presentations and after that we're going to announce the winners for lower and higher secondary and um I would like to remind the the next presenters to present only from 5 to 7 minutes. Thank you.

[00:59:06]A smart tourniquet system. Wow. That could literally save lives in the future. Fantastic job, group four.

[00:59:15]>> Absolutely. Now, let's see what our fifth group has to prepare for us.

[00:59:20]Our fifth presentation of the afternoon is titled effects of various solutions on delaying browning in a food.

[00:59:30]>> Oh, this is a project I can use in my kitchen. Let's give a very warm welcome to and let's welcome them up.

[00:59:55]Good morning judges. Today we are going to be presenting about the effects of query solutions on delaying growing in fruits. My name is Chabayong.

[01:00:08]>> My name is Panisha.

[01:00:12]>> My name is So when the apples and pears um are cut they turn brown because of the enzyme called polyphenol oxid oxidase react it's re it react with oxygen in the air. In this study, uh, we test different solution to find out which solution work the best work the best to slow down the browning and keep the fruit fresh.

[01:01:00]Okay. So our objectives are first firstly is to investigate the on different of effect on different solutions on the browning of cotton food apples and pears. Secondly is to determine which solution best fence the uh the appearance and quality of the cuted apples and pears. And lastly is to is the relationship between the solution solution concentration and the rate of browning.

[01:01:47]Next is the enzyic browning. The enzyic browning is the process of fruits such as apples and pears that turn brown after they get cut. This happens because of of an enzyme called the polyphenol phenol oxidase that that reacts with the oxygen causing a production of brown pigments on the food surface.

[01:02:20]The speed of the surrounding can be affected by factors such as the oxygen acidity and and the temperature.

[01:02:36]Polyphenol oxidase is an natural enzyme found fruit.

[01:02:45]When the fruit is cut and oxy exposed to air, PO react with oxygen and causes the fruit to turn brown.

[01:03:08]The material that we are going to use in this experiment is apple, pear, orange juice, lime juice, tea, salt, water and digital waiting skill.

[01:03:21]So first we have to prepare five treats.

[01:03:25]We prepare lime juice, orange juice, tea, salt water and no solution at all.

[01:03:32]Next step, we have to cut the apples and pair into equal slices and record their initial mass. Measure the weight of an apples and pear before soaking. After that, we will soak the fruits in the solution for 5 minutes.

[01:03:53]Then after 5 minute pass, we will remove the slices and have them dry. Next, we will record the final mass and then leave the first slide at room temperature for 3 hours. Then after that, we will observe and compare the color changes and overall appearance of each sample to determine which solution work the best.

[01:04:21]We're going to calculate for the absorption capacity and the absorption percentage. of both the apple and pear by using these formulas.

[01:04:32]First formula is the fin absorption capacity which is final mass minus initial mass and the second formula being the absorption percentage which is absorption capacity divided by initial mass times 100.

[01:04:50]You see uh this is the absorption capacity of the apples the absorption percentage of the apples.

[01:05:02]Yeah.

[01:05:03]Next is the absorption capacity of the pair and the absorption percentage.

[01:05:15]For our first objective, we investigated how different solutions affects the burning of approach and pairs. We found that all solutions delay browning compared with the control group. For the second objective, LJ is one of the most effective solution for preventing browning in both approach and pair.

[01:05:37]why the control group run the fastest.

[01:05:45]For our third objective, we compare the treated foods with the control group. The treated foods stay fresher and brown more slowly. This shows that solions help reduce inseatic browning and preserve the appearance of the foods.

[01:06:13]This trip, this table shows the absorption of each solution. T had the highest absorption followed by salt water, lime juice, orange juice and the control group. However, lamb juice was still the most effective solution for preventing browning. This suggests that higher absorption does not always mean better browning prevention.

[01:06:42]In conclusion, lamb juice is one of the most effective solution for delaying food burning. We also found that higher absorption did not always result in better preservation. Overall, we successfully achieved all three objectives of our our experiment.

[01:07:01]Thank you.

[01:07:10]>> Good afternoon.

[01:07:12]I would just like to ask on will the solution that you prepared to lessen down the browning not affect the taste of the fruits being preserved?

[01:07:27]I would get this.

[01:07:28]>> Will it not affect the taste of the food being preserved? You're able to achieve.

[01:07:33]Yeah, it prevents the browning. But will it not affect the taste?

[01:07:38]And you have suggested or based on your result, it says like pure juices would extend or I mean like would really lessen down to browning. So soaking those fruits like apple and pears on a pure juice on your lime, orange juice would would it affect the taste? Have you tried?

[01:08:00]>> Uh I already tried some for the orange and the tea have very good taste but other than that it doesn't really have good taste.

[01:08:10]>> Okay. So like what can you suggest then?

[01:08:14]>> Um not to eat.

[01:08:16]>> Not to eat. And our purpose is preserving the external appearance, the browning.

[01:08:23]Fruits are for eating definitely. And so if you advise not to eat, so it's just like not not for us to use those solutions, right?

[01:08:34]So we are only after of the outside appearance, but you don't care much on the taste of the food.

[01:08:42]That's your study all about, right? on the browning but not on the taste despite of the fact that you used a Poland pair which supposedly to be eaten right?

[01:08:55]Yeah. Any j any uh like rebuttal on my statement?

[01:09:02]So you just agree on what I've said?

[01:09:05]It's not for eating. Okay. Thank you so much. I appreciate your presentation.

[01:09:12]Thank you.

[01:09:26]Thank you.

[01:09:28]>> Thank you, group five. Now I finally know how to keep my apple fresh for longer.

[01:09:34]>> A super practical project. Now let's move on right along to move six.

[01:09:42]Our sixth project group from class 63 will be sharing their research and on a specialized protective layer. The project is titled Shitoan coding solution.

[01:09:56]>> Let's put our hands together and give them a massive welcome to our final presenting today.

[01:10:09]Let's hear it from Du.

[01:10:26]Good afternoon everyone. My name is Pin.

[01:10:30]My name is >> My name is My name is >> Today we are going to present about Sytosa coding solution.

[01:10:48]In the background the root cause of the problem shell waste from the seafood industry.

[01:10:55]Last quantity of shim shell are discord despite contraing variable hygiene limit use of natural food preservative feerative eco-friendly alternative are not really used.

[01:11:15]The effect of the problem increase food waste food have a short shelf life and spoil repeatedly.

[01:11:24]The environmental pollution from Shimch disposal shim shell waste contributes to unpre and pollution.

[01:11:42]The project idea is exploit the use of cytosan as a nature edible cing to preserve food recognize the short shelf life of fish food and the result of food base project is conver into variable cytoan use as an edible cing to an shelf Life video food rate and promote environmentally friendly waste utilization.

[01:12:26]Our project is about extracting kaosan from shim shell. The reason why we choose shell because they are a waste product for food industry but they still contain a natural uh substance called kitin. Once we get kitin we will convert it into kyosan.

[01:12:48]Kyosan is biodegradable and has antimicrobial properties which help inhibit the growth of some microorganisms.

[01:12:57]Because of these properties, hydroans can be made into a thin edible coing. In this project, we focus and study on potential of an edible whole thing for preserving fresh food.

[01:13:18]These are our objective. The first objective is to apply kyosan as a cing material for food. The second objective is to evaluate the effect effectiveness of cyosan coating in extending food shelf life. The final objective is to promote the utilization of shining waste as a venable bio material instead of throwing it away.

[01:13:48]Material we have sim sim shell dispure water aic acid hydroic acid sodium hydroxide thermometer p meter filtration paper in a m flush k cleaner Wash bottle bometric fl stirring board vinegar for now let you take stir stir by motor and pastel oven food banana se food with mango sle food strawberry So well next we are proceeding to our preparation of the chemicals.

[01:14:55]First our first step is to prepare the shrimp shell. Then we have to gather 200 g of fresh shrimp shell. Then we wash it thoroughly by tap water. Then followed by the distilled water.

[01:15:13]Then we dry the Then we dry the shells into oven at 80 to 100°.

[01:15:23]After we dry it and it has been completely dried, we grind it into small particles and which is almost a powder to increase the surface area for extraction.

[01:15:40]In the second step, we are proceeding the demineralization which is we are removing the calcium carbonate and other minerals out from our sample.

[01:15:56]Then we weigh the grind strip and we add one mole of hydroic acid at the ratio of 1 to 10.

[01:16:09]Stir gently and leave the reaction for 30 to 60 minutes. After that, refilter the sample and wash it until the pH has become nearly seven or it uh closely to the neutral.

[01:16:24]The next step is the deeproinization which is we are going to uh remove all of the protein from the shrimp shell.

[01:16:33]We're doing it by adding 5% of uh sodium peroxide solution to the demineralized sample and then we heat it up to 80 Celsius degree for 2 hours.

[01:16:48]After that we are uh washing it by distilled water until the pH has become closely to seven.

[01:16:58]And the next step is the deostellation covered which is we are converting kiten into kyocide.

[01:17:06]We starting it by mix the extracted kiten with 50% of sodium hydroxide.

[01:17:13]Then we heat the mixture up at 90 to 100 20° for for 3 to 4 hours. Then we filter the product and wash it with this distilled water until it become neutral or close to seven. After that, we open it again.

[01:17:32]Then last but not least, we are preparing an edible coating which is we mix the uh ktoan with the 1% of acetic acid. Then stiring continuously until a homogeneous solution is obtained is yeah is obtained. Then we are removing any undistor particles if necessary by using the filter paper again.

[01:17:56]Then we are coding it our treatment group fruits with the kyosan solution and our last as our last the data collection and analysis. Observe the fruits for five consecutive day. Compare the quoted and unced fruits. Analyze changes in appearance, color, freshness and the more development.

[01:18:20]Then determine whether the ktoan quality effectively delay spoilage and maintain food quality.

[01:18:42]You all place our hand in discussion.

[01:18:45]We also we observe our food appearance observation, color shape assessment, fish and bowl observation.

[01:19:04]Banana banana show appear in bananas. Coranas remain acceptable for a longer period. Mango, Mango, uh putting in a softening and wringling for uh mangoes maintain better freshness until day five. Strawberry uh kind of some clothing delay cold strawberries remain remain fresh and unc strawberry.

[01:19:47]Summary in short we found that our coding solution successfully improve food reservation and exchange of time.

[01:20:05]result in this film del.

[01:20:16]This is the table that show freshness comparison.

[01:20:22]discussion uh kosan reduce uh moisture loss kosan flow quality naturation food retain freshness longer development strawberry unc appear on this Five go. Uh spo is our conclusion. So to uh approach the objective one, the kitan was successfully extracted from shim shell waste and prepared as an inwell coating.

[01:21:28]And our conclusion to the ktoan coating helped delay fruit deterioration by reducing moisture loss, slowing color changes and minimizing microbial spoilage. And our conclusion three, this study demonstrate that shrimp shell waste can be converted into valuable kaosan providing a b a biodedegradable and sustainable material for food preservation while reducing seafood processing waste.

[01:21:59]Thank you.

[01:22:35]Hello.

[01:22:37]>> Good afternoon, teacher. All right. So, here's my question. How does kytosan inhibit the microbial growth?

[01:22:47]>> Uh, it delay the development of mold.

[01:22:53]I get this >> uh ktoan our ktoan coding solution are delaying the mo developion in fruits >> and keep more freshness of the fruits >> and why ktoan is considered as biodegradable.

[01:23:10]uh because ktoan can be dissolved in uh by natural in in our natural like it can degradable by itself.

[01:23:22]Yes, since it's uh made from kadine that we extracted from our shrimp shells.

[01:23:30]>> All right. Thank you.

[01:23:31]>> Thank you teacher.

[01:23:35]Thank you, M6.

[01:23:39]Thank you. Just want to remind everyone, we're going to have the last presentation and then we're going to announce the winners for lower and higher secondary. Thank you.

[01:24:03]Hello.

[01:24:08]>> Awesome job, Grimstex. Thank you so much for the presentation.

[01:24:13]>> And now, right, we have officially reached our final project presentation of the afternoon.

[01:24:21]To wrap up our entire secondary research presentation, our final team from class 63 will be sharing their project titled microbial fuel cells generating clean energy from micro organisms. That sounds awesome. Let's show them some love and welcome our presenters and >> take it away guys.

[01:25:16]Good afternoon ladies, gentlemen, all the students and judges.

[01:25:24]We are the micro bail view sales group and we are proud really we proud to present the project. My name is Paul for M630.

[01:25:36]My name is Arta from M630.

[01:25:40]>> My name is Lima from M630.

[01:25:44]>> My name is Tana from 630.

[01:25:50]>> So before we are going to talk about the project, I want to tell you about the our motivation and the inspiration of our project. first.

[01:26:11]>> So, right now in Thailand, we are in the rainy season, right? And it's like a rain almost every single day.

[01:26:27]Hello. Hello. Okay.

[01:26:31]So, uh now in Thailand, right now in Thailand, we are in the raining seasons and we all know that during the steing seasons, it comes with the significantly high accumulation of the standing water like uh this one that I'm holding is the standing water from our school.

[01:26:55]Unfortunately, this standing water and utilized or manage concery so it can lead to further problem such as health problem or smell pollution. Yeah, this what is however we discover that most of the standing water during the uh raining seasons contains a lot of organic matter which making it become the place perfect for the growth of the microorganisms.

[01:27:41]And according to the research that we have looked up in the internet we found that this microorganism can release electrons during its metabolism process.

[01:27:55]So we came up with the study of the microbi cells and we hope that micro our micro bofuel cells can solve the problem of uh pollution or diseases and turning it into this alternative source of energy that is clean and more sustainable.

[01:28:22]Okay.

[01:28:24]Okay. So that's is all for the inspiration and motivation of our project.

[01:28:30]Let's proceed to our objective.

[01:28:35]So for our objectives one is to study about the production of the circuit from the current from the microorganism in the stand water.

[01:28:54]in nature. And second, to design and create the best microbial fuel cell in order to utilize and contain this water. And third, to compare the amount of electricity between salt water and water.

[01:29:22]These are the material that we need for this experiment. First we need the soft bridge. The soft bridge is allow the ion to move between the two solution and the complete the electrical circuit. And then we use both method and the M method. The B method is to use to measure the voltage of that produced by the micro F cell and the method is to measure the electrical circuit and the we use the wire to connect all the component and to complete the electrical circuit. And we use copper ball and the symbol. Copper is Fs and the cat where electron are reit and symbol is FS and aton where electron are released and we use the dirty water because it contain the microorganism and the organic motor does help generate the electricity and then we use source water is an an electron right and the First that is we need to get the dirty water because it contain the microorganism and the organic matter and then we connect all the wire because we the electron to complete the electrical circuit and then we put the wire in the water to allow the to allow the electron electrochemical to complete the electric electrical circuit.

[01:31:03]And then we test the amount of the voltage and the current to record the electrical output from the micro pure comp.

[01:31:20]And then we repeat the process with the salt water to compound the electricical outcome with the dirty water.

[01:31:31]And then we combine the soft water and the dirty water to interpret this whether adding salt is improve the contiger generation. And then we compare all the result to identify which method produce the highest voltage and the current and and then we create the prototype to demonstrate to the final design of the micro referral cell.

[01:32:03]and sell based on the best performing method.

[01:32:15]So for the division testing first for the dirty dirty water meth put copper and zinc which are connected to the WS into the dirty water as a cat and an connect them together as the direct circuit.

[01:32:42]Then measure the amount of the voltage and the current. Next is the salt water metal. So first mix the salt and water to make a electrolyte solution. And then we construct the same circuit as the previous one but we change the dirty water to the salt water media.

[01:33:05]Next for the combined water method.

[01:33:09]First we combine dirty water and salt water together, two cup of dirty water and maybe two cup of salt water. Then we connect them together the uh direct circuit and then measure the the amount of the voltage and current methology. The methodology for the study utilize micro food forces were electronic where bacteras were anode electron electron. Those microorganisms oxidize organic matter generate proton and electron electron travel to external circuit containing an orange resistor to cataly chamber when they combine with proton and the electron acceptor.

[01:34:11]tightly oxygen or chemical object to complete the circuit. Performance is continuously monitor where a data block to record voltage enable creation of current efficiency based on chemical oxygen demand result of the dirty water. The dirty water can release voltage of 0.7 volt.

[01:34:41]The voltage become a lower and lower all time. The dirty water put into a current of 0.5 but they come at lower time. The result showing water canize and generate electricity. The highest were 0.7 and then go down.

[01:35:10]The resol can use voltage of 1.5 volt and then become lower over time. Salt water can produce a current of 2 milliamp. The current become lower over time.

[01:35:31]Salt water produce maximum voltage of 1.6 six and a minimum cooling of 2 milliamp combine water. The combine water will produce water of 1 volt and then the voltage become lower lower over time.

[01:35:52]Combine water will produce the current of 1.5 m but then the cooling become lower over time.

[01:36:05]Thank you. So uh for based on the finding or the experimental test about the voltage and the current of this water can generate the highest electrical energy to uh 1.6 six bowl and 2 m follow and following by the dirty water the dirty water which combined with the salt water and the only dirty water in bio.

[01:36:44]However, although this uh water generate the AC and obviously decrease over time, we can clearly at least can actually prove that uh this water can literally create the electricity and it can work with a small device.

[01:37:08]So uh this project uh can demonstrate that this water uh can this water have potential to be the alternative source for our human being in the future with the further development.

[01:37:35]Thank you for listening very much.

[01:37:42]>> We are ready for your >> Hello. Hello boys. Hello teacher. All right. So here's my question. Well, only one question. How do microorganism generate electricity in a microbial fuel cell? Oh um so uh for research yeah the my flow organism will colonize and make like a group community side uh around the uh copper which is the uh anode not anode the cathode site for the microbial field and during the process of metab consume of the organic matter.

[01:38:39]During the eating process of the uh food inside the the dirty water, it can generate and uh release a little bit of electrons and all the electrons will uh transport from the cathode to the anode side of microbial field and making it like a electrical circuit.

[01:39:05]Okay. So what type of bacteria is inside in 200 uh to be honest we can we cannot define the type of bacteria because we we have tried to observe but the but the microorganism site is like they are moving and it's hard to uh see and I will identify what we know about. Okay, thank you boys.

[01:39:37]So, so your presentation it is uh very nice and you present it well. Thank you.

[01:40:08]An incredible work, group seven. Let's give one more massive roaring round of applause for group seven.

[01:40:18]You all did an absolute phenomenal job.

[01:40:23]Seriously, the future of science is looking so bright. But wait, right, the aftermath isn't over yet, right?

[01:40:31]>> Not even close. Look at the clock. It's 15:50 p.m.

[01:40:37]Which mean it's time to announce the winner.

[01:40:46]This part of the script. Part of the script.

[01:40:50]Yeah. Yeah.

[01:40:52]Yes, the winners. But before that, please stay seated as we move into our official closing remarks.

[01:41:00]>> To lead us into closing ceremonies, please give a warm welcome to teacher Lynn.

[01:41:19]>> Ow. Okay, come to the end of our project uh work today.

[01:41:28]Before we announce the winner of uh scan project work today, I would like to invite our assistant director Naha to give up uh crossing speech and after that now we will follow by um giving reward to the winner.

[01:44:48]One Foreign speech. Foreign speech.

[01:44:48]Foreign speech.

[01:45:28]Yes, ladies Ladies and gentlemen, the moment you have been waiting for has arrived. Are you excited to know the result? Are you excited to receive your award?

[01:45:38]>> Yes, >> you're tired, but you have to be very excited. Okay, so again to every participant before I'll announce the winners. To every participant, thank you for your creativity, your hard work, and passion for science. Thank you so much.

[01:45:56]You're all winners, you know, in your own way. And now without further ado, let's recognize our outstanding teams for lower secondary.

[01:46:08]And we are requesting our vice director for academic affairs to please hand the awards and be on stage. So to give the awards and also to be given by teacher Lynn and teacher Nan requesting people to be on stage to give the award with our vice director.

[01:46:30]Are you ready to hear your name?

[01:46:33]Are you not ready? We will not be giving the awards. Are you ready to hear your name?

[01:46:40]>> Yes. No energy. You cannot go home.

[01:46:44]>> Are you ready to GET YOUR AWARD?

[01:46:48]THAT'S IT. OKAY, for our third place, our secondary third place, an average overall 87.6, First two we have mini tornado mini tornado and bima please be on stage.

[01:47:19]Congratulations guys.

[01:47:23]A round of applause for the mini tornado uh researchers.

[01:47:37]Yeah, congratulations guys. Harry, Nana, Zen, and Viva. They are from 315.

[01:47:46]Yay. Congratulations.

[01:47:58]>> Yes. The hard work paid off, guys. Yes, congratulations. You can just stay on the sign.

[01:48:06]Yeah, guys, just stay in the design the sign for the Victoria.

[01:48:11]Now for our second place, garnering an average score of 88.3.

[01:48:24]wheelchair throwing attachment with D boss LMA and first congratulations wheelchair people.

[01:48:36]>> Yeah, the time that you've spent now you're getting the fruit of it.

[01:48:41]Congratulations.

[01:48:48]And are you ready for our champion for the lower secondary? Are you ready?

[01:48:55]>> Yeah. You're not ready. You're not ready. I'm going to announce. Are you ready to hear your name?

[01:49:03]>> Who do you think? Who do you think is going to be our first or our champion?

[01:49:09]>> M3 or M2?

[01:49:12]>> M3 or M2?

[01:49:15]>> M6.

[01:49:17]Okay. Yeah. for our champion garnering an average score of 88.67% our champion is smart John are you still here?

[01:49:44]>> Oh no winner. Okay. Yes. Come up on stage, please. Oh, the two ladies might have to run in an extra class maybe or date with someone else.

[01:49:57]>> Yes. Thank you, John John. Yeah, congratulations.

[01:50:02]Yes, congratulations ladies for winning the competition smart king. So, it's okay now to get wine because we already have our smart blind cake. Congratulations lower secondary. May we request all of you guys to come up on at the center for Okay. And may I request the teachers and judges please come up on stage to take photo please on stage.

[01:50:35]Now on.

[01:50:39]Yeah. Bring bring your flag your card.

[01:50:43]And for the information of everyone, the first place of champion, they will get a full score for their midterm test result.

[01:50:54]So Jang, you will be getting full score for your midterm test.

[01:51:08]Hey, smile everyone.

[01:51:13]>> Mini heart.

[01:51:22]>> One more. Can we point the students are getting? Yeah. Can you Yeah, please teachers, can we just point them?

[01:51:29]>> Yay.

[01:51:37]Yes, congratulations and thank you so much teacher Nana teacher teacher Jr. for the announcement of the up your secondary visa.

[01:52:03]It is my pleasure and honor to announce the winners for the science project competition higher secondary level M5 and M6. Are you ready?

[01:52:15]>> All right, without further ado, for third place garnering 76.25% 25% is the microbial fuel cell by Arlo and please come here on stage to take the award quickly.

[01:52:42]>> Congratulations boys. Now come on fly high to the sky.

[01:53:02]everyone. Please, a round of applause for them.

[01:53:06]A round of applause for them.

[01:53:16]Congratulations boys.

[01:53:26]>> And for the second place, Garnering.

[01:53:33]I forgot to put the percentage but anyway second place goes to Non Palia Papa and Gintapo for their study comparative study of oil removal efficiency using activated carbon spelled coffee grounds and sodas at various temperatures. Congratulations girls.

[01:54:02]birthday.

[01:54:37]And for the champion for higher secondary uh science project competition this year 2026 garnering 94.7 pop 5% goes to the design and integration of an AI enhanced agricultural UAP decision.

[01:54:58]Two more system by God yoke and mint. Thank you.

[01:55:38]I request the the second and third placesers to be here on stage again for final photo taking and also for the judge to be here too.

[01:56:28]I know I'm Congratulations to the winners of this year's science project competition.

[01:56:47]But before we end, um I'd like to give our highest appreciation to the English program family, especially