エクササイズ
日々のエクササイズ
As I mentioned before, I have been keeping an eye on EV's trends since I've been into the next generation vehicle for the last few years. I found an online article that said the demand of lithium ion battery for EVs is expected to increase drastically in the future. Lithium is a main ingredient for the battery and it faces huge issue that it's hard to maintain a stable supply of lithium. There are some method which extract lithium by mining from ores and refine it from salt lakes and salt wafer in the stratum. However, those methods have problems that it takes long time to produce and so on. "Direct Lithium Extraction(DLE)" is one of the countermeasures for stable supply and many companies have recently conducted research and development about this solution. The method is a technology which extracts lithium directly from salt wafer pumped from salt lake and the layer. The conventional refinement method has to store salt water in the distillation pond and put a few years into evaporating it. On the other hand, DLE can produce lithium in a few hours since it extracts it by passing salt water through filter and absorption film. That's why the method doesn't need a large space like distillation ponds and can reduce cost to produce lithium. I hope this technology gives us affordable lithium batteries in the future.
2023年12月31日
6
2
I went to see a dentist in a public hospital today because I had my teeth cleaned in a private dental clinic about two months ago when I was told I had 7 delayed teeth, and the workers there persuaded me to fill all the delayed teeth. However, since I was busy with my study and the cost of filling teeth was expansive, I decided not to fill the teeth until I finished my exam. But the thought that I may have to spend a lot of money on my teeth frequently intered my mind and made me anxious. Besides, I saw many contents online which said filling decayed teeth was not once for all, the life of filling material was generally only 5-10 years, and it may quicken the daycaying speed, that means I may have to deal with my decayed teeth in my all rest life and made me more worried. After I finished my exam, I spent more time on searching for information about filling teeth. I saw many people sharing their experience that they being treated by private dental clinic and suggested to see dentist in public hospitals. Therefor, I went to a public hospital today, the dentist told me that all my decayed teeth are very shallow and there was no need to fill them, just brush teeth carefully. There was only one tooth was a bit serious, but it was also shallow and he advised me to take care of this tooth and observe its condition, if the black area is expanding, I have to fill it . I felt reliefed and I definitely won't do anything in private dental clinic anymore except washing teeth.
2023年12月30日
2
2
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