Where is Huashui and what does it mean

Huashui now refers to the North China University of Water Resources and Hydropower. Historically, it was known as "Huashui" and "North China Water". "Huashui" used to refer to "East China Water Conservancy College", and "North China Water" used to refer to "North China Water Conservancy and Hydropower Institute".

In 1985, the former East China Water Conservancy Institute restored its traditional name "Hohai University", and then gradually replaced Huashui with Hehai. Later, people used to refer to the "North China Institute of Water Resources and Hydropower" as "Huashui". In April 2013, North China Institute of Water Resources and Hydropower was renamed North China University of Water Resources and Hydropower.

In fact, there is no such thing as Huashui discarded by the river and sea, because the Huashui (i.e., East China Water Conservancy Institute) period was an important part of the river and sea, and it was also the beginning of the period when Hohai University began to be famous and world-famous. Nowadays, in the eyes of the older generation, Huashui is the river and the sea, Academician Qian Zhengying is still there, and Yan Yixin, the son of Academician Yan Kai, still grew up in the courtyard of Huashui.

The reason why Hehai did not have a strong reaction to the fact that North China University of Water Resources and Hydropower is referred to as Huashui (you can see that Luzhou Medical College changed its name to Sichuan Medical University, referred to as Sichuan Medicine, which was strongly opposed by Sichuan University, even if Huaxi has been merged for many years, and now people are becoming more and more familiar with Huaxi instead of Huaxi's former name, Sichuan Medicine). I think, first, the name of Hohai University was personally finalized (at that time, there were two preparations, Hohai University and China Water Conservancy University, and the school was more inclined to the national characters, and as a result, *** felt that Hohai University was better), and personally wrote the name of the school and gave it to Hohai (note that it was written personally, not from the works of great men). Second, although Huashui is an important part of the river and sea, the name of the river and sea is still ranked before Huashui (although the glory of the river and sea gradually takes off from Huashui), the respect and inheritance of history, inheriting the abbreviation of the river and the sea, and continuing to use the Wechsler pinyin hohai commonly used when the school was established (Wechsler has been canceled by the state, only a few special words are retained, such as Peking Opera called peking opera, Peking University called peking university, Peking is Merriam-Webster's Beijing.

Nanjing is Nanking in Webster, has been abandoned, Nanjing University is not called Nanking University, and the University of Nanking is exclusive to Jinling University, that is, one of the predecessors of Nanjing University) Third, they are also brother colleges that grew up together in the water conservancy system, so why fight for a name...

Blooms (known in the ocean as "red tides") are phenomena that occur directly or indirectly with a sudden increase in plankton.

There are many cases of discoloration on the surface of the water, such as the water of the water (the water turns greenish-brown), the bitter tide (the phenomenon of the bloom that turns the sea red), the green tide (the water turns blue) and the bloom in freshwater. There are many species of plankton that make up the bloom phenomenon, but flagellates and diatoms are mostly dominant species in the ocean, and cyanobacteria are dominant in freshwater.

The density of plankton at the time of red tide is generally 102-106 cells. Fresh water flows into the inner bay off the coast of Japan, and it occurs from spring to autumn. In recent years, eutrophication has occurred due to the increase in urban and industrial wastewater, and red tides have occurred frequently in Tokyo Bay, the Seto Inland Sea, and the Ariake Sea.

The bloom phenomenon in freshwater is most famous in Dianchi Lake, Taihu Lake and Chaohu Lake.

Blooms have become a worldwide public nuisance, and blooms occur frequently in the United States, Japan, China, Canada, France, Sweden, Norway, the Philippines, India, Indonesia, Malaysia, South Korea, Hong Kong, China and other regions.

First of all, the occurrence of blooms destroys the normal ecological structure of the ocean, and therefore also disrupts the normal production process in the ocean, thus threatening the survival of marine life.

Secondly, some bloom organisms will secrete mucus, which sticks to the gills of fish, shrimp, shellfish and other organisms, hindering breathing and causing suffocation. Blooms containing toxins can cause poisoning and death when ingested by marine organisms. Humans can have similar consequences when they consume seafood that contains toxins.

Thirdly, after the death of a large number of bloom organisms, a large amount of dissolved oxygen in seawater is consumed in the decomposition process of the corpse, resulting in an anoxic environment and causing a large number of deaths of shrimp and shellfish.

Algal blooms refers to a natural ecological phenomenon of algae blooming in freshwater bodies, which is a characteristic of eutrophication of water bodies, mainly due to the fact that after the waste water containing a large amount of nitrogen and phosphorus in domestic and industrial and agricultural production enters the water body, cyanobacteria (also called cyanobacteria, including trembling algae, Candida, cyanococcus, hair cabbage, etc.), green algae, diatoms, etc., make the water body appear blue or green after a large number of reproductions. Some blooms are also caused by zooplankton, dinoflagellates. The phenomenon of "water bloom" has been recorded in the ancient history of our country.

In addition, if a similar phenomenon occurs in the seawater (usually red), it is called red tide.

It is a natural ecological phenomenon of algae blooming in freshwater water bodies, and is a characteristic of eutrophication of water bodies, mainly due to the fact that after the waste water containing a large amount of nitrogen, phosphorus and potassium in life and industrial and agricultural production enters the water body, cyanobacteria, green algae, diatoms and other algae become the dominant species in the water body, and the water body is blue or green after a large number of reproduction.

"Huashui" refers to the territory of China, the water of the region on the land of China. Including the vast ocean, the rushing river, the rippling lake, the trickling stream, the waterfall and so on. The word "Huashui" has a very rich connotation, Shouxiang has the concept of land and auspicious Qinna domain (Chinese land water), the concept of water conservancy (Huaxia water conservancy), and the concept of culture (Chinese water culture).

It is the water of civilization of the land of China and the Chinese nation, the water of water and the water of culture.

"Hua" is China, the ancient Chinese people lived, built a city, built in the north and south of the mother river and the Yellow River, because it is in the Quartet, because it is called China, it is the place where the Han nationality first arose, and the territory of the later dynasties gradually expanded, where it was governed, it was called China, and then it also referred to China.

The word "China" was compounded by the philosophers who believed in the concept of "the unity of heaven and man" in the Wei and Jin dynasties in 300 A.D. from the two names of "China" and "Huaxia". "Zhong" focuses on nature (heaven), implying the middle of the world; "Hua" focuses on ethnic groups (people), meaning the Chinese ethnic group (the predecessor of the Han nationality).

Categories: Education, Science, >> Science & Technology.

Analysis: What is a bloom?

"Water blooms" are a natural ecological phenomenon in freshwater, which is caused only by algae, such as cyanobacteria (strictly speaking), green algae, diatoms, etc., that is, eutrophication of water. When a "bloom" occurs, a strand of water is blue or green. This phenomenon of "water blooms" in nature has been recorded in the ancient history of our country.

In nature they disappear quickly and do not pose a danger to aquatic animals and humans.

After eutrophication in freshwater, "blooms" appear frequently, and the area spreads year by year, and the duration is extended year by year. Taihu Lake, Dianchi Lake, Chaohu Lake, and Hongze Lake all have "blooms", and even flowing rivers, such as the largest tributary of the Yangtze River--- Hankou River in the lower reaches of the Han River, also have "blooms". The biggest hazards caused by "blooms" in freshwater are:

Drinking water sources are threatened, algal toxins affect human health through the food chain, and MCRST, a secondary metabolite of cyanobacteria "blooms", can damage the liver and have a cancer-promoting effect, directly threatening human health and survival. In addition, the filtration device of the waterworks was filled with algae "blooms", which were floating on the water surface and affected the landscape and had an unpleasant smell.

The noun of bloom is explained as follows:

Some algae bloom in small bodies of water and shallow lakes in large numbers, giving the water its color, a phenomenon called blooms.

Blooms (natural ecological phenomena) generally refer to splashes (abnormal plankton proliferation).

Water flowers are also known as algae flowers and blooms. It refers to the phenomenon caused by the overgrowth of certain cyanobacteria in freshwater bodies. The main dominant species are Bundle Fila, Microcystis, Anabaena, Cavitaria or Cryptococcus.

In the countryside, you can see a lot of ponds and green is it, the common people will generally come to feed the ducks, and the abnormal proliferation of plankton in fresh waters such as rivers, lakes and ponds is called water splash.

Photosynthetic cyanobacteria grow in water and require only a very small amount of oxygen, but a lot of carbon dioxide. When conditions are right, photosynthetic cyanobacteria multiply rapidly, increasing the number of bacteria so much that they form a green carpet on the water surface. This phenomenon is called algae flower by Pei Zheng.

The eutrophication of stagnant waters due to water pollution is one of the causes of splashing, so the discharged wastewater must be treated strictly. Do not use pesticides excessively, pesticides are generally nitrogen fertilizers, phosphate fertilizers, and the use of phosphorus-free laundry detergent is also advocated for this consideration.

At the same time, for the use of lake water and reservoir water as water source facilities, attention should be paid to prevent the blockage of the filter tank of the agarine, so as not to cause water odor.

The basic explanation is also called a splash. The phenomenon of algae and other plankton blooming in rivers and lakes in large quantities and rapidly, resulting in the deterioration of water quality. Caused by eutrophication of water bodies. This phenomenon occurs in the ocean called red tide.

Algalblooms refers to a natural ecological phenomenon of algae blooming in freshwater bodies, which is a characteristic of eutrophication of water bodies, mainly due to the fact that after the waste water containing a large amount of nitrogen and phosphorus in life and industrial and agricultural production enters the water body, cyanobacteria (also known as cyanobacteria, including microcysts, anaanaea, trembling algae, candida algae, cyanococcus, hair cabbage, etc.), green algae, diatoms, etc., make the water body appear blue or green after a large number of reproduction.

Some blooms are also caused by zooplankton, dinoflagellates.

Blooms"The phenomenon has been recorded in the ancient history of our country.

In addition, if there is a similar phenomenon (usually red) in the seawater, it is called red tide. The prevention and control measures of blooms mainly include salvage, flocculation and algae removal and biological algae control. Ideation to do.