What are the consequences of improper hair removal? Improper hair removal will cause hair thickening, hair embedding, pigmentation, hair follicle inflammation and rough keratinization. Therefore, when choosing hair removal, you should pay attention to choosing a professional institution or hospital to help you remove hair. Guangzhou Time Plastic Surgery Hospital solves your worries. 1, hair thickens. Most people have a wrong idea about shaving, thinking that hair will get thicker and thicker. In fact, when shaving, the soft and thin tip is shaved off, leaving a thick hair shaft, because the cross section looks thicker. In fact, the hair growing from the roots is still the same thickness. It's the same reason that boys don't shave thick every day. However, shaving in thick hair will leave hair roots that are difficult to shave, and black spots will appear in pores, especially when the hair just grows out, which will affect the appearance. To avoid this, plucking or laser hair removal can be used. 2, buried hair This is the most dangerous complication of self-depilation, often because of plucking and breaking, or reverse shaving, the hair is buried inside the skin and cannot grow normally. A small part of it is due to the damage of epidermis or hair follicle caused by depilation, and the pores are blocked when the skin heals, leading to hair embedding. Inlaid hair looks like goose bumps. Because of hair burying, it will cause irregular inflammatory reaction and pigment scar. It is usually necessary to remove buried hair by surgery. The correct hair removal method, combined with regular hair removal and exfoliation, can help hair grow skin and prevent hair from embedding. 3. Chemical hair removal, such as pigment beeswax, hair removal cream, hair removal mousse, etc., may produce * * * and sensitive reactions to the skin. People who are allergic to hair removal cream should not try drug hair removal. It is best to apply it to the inside of elbow first, and then carry out an allergic test to confirm that there is no redness, swelling, itching and other reactions before applying it to other parts. Physical hair removal, such as shaver and hair removal knife, may cut the skin and cause pigmentation or scar if used improperly. No matter what method you use to remove hair, it will cause slight damage to your skin. Be sure to moisturize and protect yourself from the sun after hair removal, otherwise there will be pigmentation after skin injury. 4, hair follicle inflammation, rough keratinization and plucking is not only painful but also easy to cause hair follicle inflammation. Be sure to rub the lotion after pulling it out to calm and moisturize the skin. People with fragile skin can also apply antibiotic ointment (eye ointment such as chlortetracycline and oxytetracycline) in advance to avoid inflammation and infection. Scraping and hair removal often causes scratches on the epidermis, which will make the skin keratinized and rough over time. Therefore, clean and lubricate the skin before shaving, and moisturize and exfoliate moderately after hair removal. The scraper must be replaced frequently to keep it clean and sharp.
Do you use combustible ice now? At present, the exploitation of combustible ice in the world is still in the stage of research and experiment, and there is no feasible exploitation method (industrial exploitation).
Mining is a "double-edged sword"
However, such abundant energy is still beyond our power.
Natural "combustible ice" is buried in rocks on the seabed. Compared with oil and natural gas, mining and transportation are not easy, so far there is no perfect mining scheme in the world. Wang Ji * *, an academician of China Academy of Sciences and director of chinese geophysical society, believes in a document that, firstly, the exploitation of this hydrate will cause a series of serious ecological problems.
Some scholars believe that the role of methane in global warming is 10 ~ 20 times greater than that of carbon dioxide. If methane gas leaks into the atmosphere in a large amount during mining, the greenhouse effect will be more serious than carbon dioxide. However, even the smallest damage to "combustible ice" mineral deposits, even natural damage, is enough to lead to a large loss of methane gas. And this kind of gas enters the atmosphere, which undoubtedly increases the greenhouse effect, and then makes the earth warm up faster; At the same time, because there is no very mature exploration and development technology, once a blowout accident occurs, it will cause seawater vaporization and tsunami capsizing. In addition, "combustible ice" may also be one of the main factors causing geological disasters. Because "combustible ice" often exists as a cement of sediments and plays a key role in the strength of sediments. The formation and decomposition of "combustible ice" can affect the strength of sediments, and then induce geological disasters such as submarine landslides. According to the survey of the US Geological Survey, "combustible ice" will cause landslides on the continental slope, which is a great threat to various submarine facilities.
At present, many countries in the world are actively studying the development and utilization technology of "combustible ice" resources. Up to now, there are three main mining methods of "combustible ice": thermal strengthening method, decompression method and injection method. The biggest difficulty in mining is to ensure the stability of the bottom hole and prevent methane gas from leaking, which will cause greenhouse effect. In order to solve these problems, Japan proposed a "molecular control" mining scheme. The final determination of combustible ice gas reservoir must be completed by drilling, which is much more difficult than conventional offshore oil and gas drilling. On the one hand, the water is too deep, on the other hand, "combustible ice" will decompose rapidly when it encounters decompression, which will easily lead to blowout. More and more research results show that at least the temperature and pressure changes caused by natural or man-made factors can decompose hydrates, causing environmental disasters such as submarine landslide, biological extinction and climate warming.
It is urgent to study the drilling and production methods of natural gas hydrate, and it is urgent to study the decomposition, synthesis and drilling and production methods of indoor and outdoor combustible ice as soon as possible.
How to evaluate the success of the first exploitation of combustible ice in the world-leading China sea area is of great significance to national energy supply, national development and national strength. Merit lies in the present age, and benefit lies in the dry autumn.
It is in favor of comprehensive work from the perspective of environmental protection evaluation and geological evaluation. If the underground is hollowed out, do you need to fill something in (so why carbon dioxide replacement is more environmentally friendly) and how to ensure that natural gas does not leak from other places outside the gas well (submarine faults and the like). After all, if something happens, it's a big deal. Not to mention the theory that methane release leads to biological extinction, it is conceivable that development may lead to seabed softening, seabed landslide and collapse, which may lead to an earthquake and tsunami, form a vortex on the sea surface and suck the platform in, and the earthquake and tsunami will also spread to the coastal areas of Guangdong. As for mass extinction, there is no need to be so alarmist. The cause of the Permian extinction is also controversial in academic circles, but ocean acidification at that time should be global, and its inducement may be regression caused by climate change. I have also learned about the Michaelis cycle of climate change before, knowing that creatures are fragile in front of the earth, and nature really can't let you die. However, the development of society has actually won time for mankind. There is nothing wrong with this route, which is to maximize the total amount, maintain peace and stability, and wait for the scientific and technological revolution when the allocation of resources cannot be solved. Otherwise, do you believe that the resources will be insufficient or unevenly distributed after the population increases? Before the real climate change comes, humans can commit suicide with nuclear bombs and nuclear winter.
At present, China's dependence on oil imports has reached 60%, and power generation mainly depends on coal. The environmental problems caused by this have become more and more serious in recent years, and the economy has to develop. It is conceivable that the demand for natural gas, a relatively clean energy source, is great. A few years ago, PetroChina and Sinopec focused on coalbed methane and shale gas, but the successful experience of the United States may not be replicated in China. The pipeline gas imported from Russia is finally controlled by others, which violates energy security; The landing price of LNG imported from the United States, Canada and Australia will not be cheaper than that of pipeline gas. If a large gas field is found in the domestic sea area, we have made our own progress in the production and research of natural gas hydrate equipment, have reliable development standards, keep up with environmental protection legislation in time, and supervise its implementation, which is good for energy security, stimulating the downstream industrial chain and providing employment to boost GDP.
Generally speaking, this trial mining is a bold attempt on the basis of integrating existing technologies. As a propaganda report, it is ok to exaggerate. Everyone in Zhihu should treat it with a rational attitude. It remains to be seen whether there will be any big news in the future.
The first successful exploitation of combustible ice in China sea area is a strategic breakthrough, which makes China the fourth country to obtain natural gas hydrate samples through the national R&D program after the United States, Japan and India, and also means that the investigation of natural gas hydrate resources in China sea area officially ranks among the advanced international hydrate exploration.
This new discovery fills the gap of visible hydrate in China's sea areas and greatly enriches the occurrence types of hydrate in China's sea areas. It is a new hydrate occurrence type discovered after the drilling voyage in 2007, which has great exploration practical significance and important scientific research value, and is a milestone in the investigation and exploration of hydrate resources in China's sea areas.
How to evaluate the success of exploiting combustible ice for the first time in China? Many people are discussing the harm of combustible ice instability. I find it difficult to enhance the greenhouse effect-because it is a question whether the released methane can reach the sea surface. Let's discuss, assuming that there is a large-scale collapse of combustible ice on the seabed of the South China Sea, where is the fate of these methane molecules?
First, a lot of methane will dissolve in seawater. Suppose that when a disaster occurs, a large number of methane bubbles come up. However, in the process of rising to the sea surface, these bubbles face at least two severe tests: first, seawater has certain solubility in methane under this condition. This solubility increases with depth. Secondly, when it is lower than 520m (Rehder et al., 2002), the edge of the bubble will recrystallize to form combustible ice. This is because natural gas hydrate is thermodynamically stable at this temperature and pressure. In fact, D.F McGinnis and others observed some methane bubbles in the Black Sea in 2006, and found that only 65,438+00% methane remained from the 90-meter-deep seabed to the sea surface. Only 90m! We know that the mining depth in the South China Sea is1200-1300m. We can judge that most methane will not escape from the sea surface in a short time.
What are the adverse consequences of improper use of the media? Debate 1, and the advertising fee will be wasted.
2. Delaying the progress of market development is not conducive to sales support and affects the sales operation of the whole company.
This is the most direct.
What is "combustible ice" and how to use it? Generally, it is abundant in the deep seabed. It is an icy solid formed by methane under great pressure, and it is a clean energy source. Mining should not be easy.
What is the significance of successful exploitation of combustible ice for China? The success of the first trial mining of combustible ice in China is of great significance: with the increasing energy demand, new energy has been hard to find, and the success of the trial mining of combustible ice marks a big step forward in the development of new energy; Nowadays, environmental protection problems are plaguing the whole world. The success of the first trial mining of combustible ice in China sea area means that traditional energy can be well saved.