Strictly require industrial and mining enterprises and construction enterprises to meet the standards of exhaust gas and dust; strictly require that motor vehicles traveling in the city must meet the standard exhaust emissions; strictly control urban living coal; prohibit indiscriminate burning of straw. Due to the above-mentioned measures, and the basic implementation, China's urban air quality has improved, but the atmospheric air pollution index (API) value of most cities is still high, and the crux of the problem is that the author believes that China is developing and implementing air pollution prevention and control. In the policy, we should comprehensively and stereoscopically control air pollution in light of specific national conditions.
It is necessary not only to prevent and cure the internationally recognized sources of atmospheric pollution, but also to control the uniqueness of our country. The most direct source of pollution to the city's atmospheric quality, namely, the large amount of soot (fog) produced by large and medium-sized kitchens in more than 100 million home kitchens and millions of restaurants in China. China is an ancient civilization and its food culture is famous both at home and abroad. In the traditional Chinese cooking process, the use of frying, frying, frying, grilling, etc., in the process of these processes will produce a lot of soot (fog).
Scientific tests have shown that the oil fumes (fogs) produced in cooking contain many different chemical components, mainly harmful peroxides produced by animal and vegetable oils at high temperatures and their pyrolysis-causing carcinogens such as acetaldehyde and nitrosamines. Harmful gases such as carbon monoxide and sulfur dioxide produced by special hydrocarbons and gas-fired coal. These harmful mixed gases are generated in the cooking and dispersed in the kitchen interior space. Usually, people take the initiative to take the indoor fumes (fog) to the outside as soon as possible.
Under normal circumstances, people are not aware of the dangers of oil smoke emitted to the outside. When they smell the smoke (fog) with the smell of food, they often involuntarily suck their mouths and never smoke the smoke (fog) from the outside of the kitchen. The exhaust gas emitted by the car is treated as a harmful gas. From a macro perspective, kitchen fumes (fogs) are colored, odorous hot gases, but microscopically, kitchen fumes (fogs) are made up of countless tiny particles suspended in the air. Once the kitchen fumes (fog) are discharged, it is easy to combine with suspended particles and other harmful gases in the outdoor air. Under the ultraviolet rays of the sun, chemical reactions can be generated quickly, continuously and effectively, which can form more complex and harmful mixed gases.
These mixed gases drift with the wind, some are absorbed by people when they breathe, some are adsorbed on nearby objects, and most of them are suspended in the air. It can be said with certainty that the kitchen fume (mist) is discharged to the outside by purification treatment, which pollutes the surrounding small living environment and pollutes the urban air quality. The urban population of China is about 400 million, calculated by an average of 4 people. More than 100 million homes and kitchens, plus a large number of large and small restaurants, restaurants, hotels, canteens, food processing J and other catering kitchens in the city, every day cooking will produce a lot of oil smoke. Every city is produced by the kitchen. The total amount of harmful gases is an amount that can be expressed in astronomical figures, and is produced every day and again.
From the point of view of pollution, the fumes (fogs) produced by kitchens in cities across the country are far more influential and more intuitive than the pollution caused by the exhaust of 1.52 million motor vehicles in the country. It is understood that at present, most cities in China have insufficient understanding of the harmful effects of kitchen fume (mist) pollution on the atmosphere, and the control measures are not effective, so that the large and small kitchens in the city unrestrictedly discharge the untreated fumes (fogs) out of the room. Although most catering kitchens use high-energy fume pipes to remove soot (fog) to reduce pollution to their surroundings, the impact on urban air pollution has not decreased.
Obsidian Gemstone meaning
With its glassy luster, obsidian is a distinctive stone. Obsidian is formed as lava from volcanic eruptions cools within the earth. The speed at which it cools prevents crystallization and the rock forms as solid volcanic glass.
Although its most common color is black, obsidian can also be found in light brown, brown mottled with black, and black with a beautiful golden or silvery sheen.Snowflake obsidian is dotted with white patches where parts of the rock have begun to crystallize. The most prized obsidian by gemologists is the rainbow obsidian variety with purple, green and gold bands of sheen.
Obsidian was revered by ancient cultures. It was one of the major barter materials, and prized for its ability to be worked to razor-sharp edges for arrows and spears. It has been used since prehistoric times for making tools, masks, weapons, mirrors and jewelry.
Healing properties of Obsidian
Obsidian helps to protect the very sensitive against depression. It is the stone of the soft hearted and gentle people of the world. Use obsidian to help block negativity of any kind. As a black gemstone, it symbolizes self control and resilience. Black stones have protective energies in the sense that black is the absence of light, and therefore, can be used to create invisibility.
Sources of Obsidian
Obsidian can be found anywhere that volcanic activity has occurred. Some of its important sources today are South America, Japan, Mexico, Afghanistan, and parts of the United States. The San Carlos Apache Reservation in Arizona, United States, produces an interesting banded variety of obsidian known as "Apache Tears".
Obsidian
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