Ministry of Public Security cracks down on violent crimes in subway transit
According to the Ministry of Public Security website, the Ministry of Public Security held an emergency video conference for public security agencies in the afternoon on July 16 in response to a number of recent cases of bus arson.
Acids exist universally in our life. There are both numerous kinds of natural acid compounds with biological functions and massive synthesized acids which are used in many ways.
In industry
Acids are fundamental reagents in treating almost all processes in today's industry. In the chemical industry, acids react in neutralization reactions to produce salts. For example, nitric acid reacts with ammonia to produce ammonium nitrate, a fertilizer. Additionally, carboxylic acids can be esterified with alcohols, to produce esters. Acids are often used to remove rust and other corrosion from metals in a process known as pickling. They may be used as an electrolyte in a wet cell battery, such as sulfuric acid in a car battery.
In food
Many acids can be found in various kinds of food as additives, as they alter their taste and serve as preservatives. Phosphoric acid, for example, is a component of cola drinks. Acetic acid is used in day-to-day life as vinegar. Citric Acid is used as a preservative in sauces and pickles. Certain acids are used as drugs. Acetylsalicylic acid (Aspirin) is used as a pain killer and for bringing down fevers.
Acid catalysis
Acids are used as catalysts in industrial and organic chemistry; for example, sulfuric acid is used in very large quantities in the alkylation process to produce gasoline. Some acids, such as sulfuric, phosphoric, and hydrochloric acids, also effect dehydration and condensation reactions. In biochemistry, many enzymes employ acid catalysis.
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The Ministry of Public Security requires that local public security agencies should comprehensively increase the level of prevention and control, adhere to key prevention and control, and overall prevention and control, scientifically adjust the deployment of policing, strengthen armed patrols, and send uniforms or plainclothes police officers on a train-by-vehicle basis, and implement fixed-point security inspections at major stations. The “four-in-one†prevention and control model of inventory, special police armed patrols, armed police patrols, and police bringing dogs into the station. It is necessary to further strengthen the control and control of key items and key personnel, strictly control the security management of the purchase and sales channels for all types of dangerous goods, and resolutely block off dangerous goods and dangerous people outside the vehicle. We must do our best to prepare for the emergency department and abide by the frontline of Tuen Mun to ensure that it will respond quickly and efficiently in the event of an emergency.
The Ministry of Public Security requires that public security organs at all levels, under the unified leadership of the party committee and government, shall, in conjunction with the transportation department, urge subway operators to further strengthen security inspection measures and implement security responsibilities. (Wen Xin)
Also (specialist reporter Lin Jianfang, regular correspondent Huang Shaojun) On the evening of July 15, after an artificial arson attack occurred in the Guangzhou City, Guangdong Province, the Guangzhou Municipal Communications Commission immediately deployed further strengthening of security work to strengthen the bus (ship) and danger. Transport vehicles, station ticket sales offices, transfer hubs, and other traffic safety links were investigated and rectified, and teams were strengthened to inspect on-site and follow-up vehicles, and video surveillance was implemented to ensure the timely detection of suspicious persons and items.