The monthly science rumor list is jointly released by the Beijing Science and Technology Association, the Beijing Information Office and the capital Internet association, and jointly released by the Beijing Science and technology Journalists Association and the Beijing regional website.
Quantum protoplast can prevent cancer, diabetes and hypertension
Quantum is a physical concept, which was proposed by German physicist Planck in 1900. It is the smallest and indivisible unit to describe a physical quantity in the micro world. At present, the research of quantum theory such as quantum mechanics is developing rapidly, and quantum precision measurement, quantum communication and quantum computing have made great progress. In particular, quantum precision measurement and quantum secure communication have been applied in practice.
Although there may be quantum effects in life phenomena, such as biological navigation and photosynthesis, the experiment is very difficult because these phenomena are too macroscopic. Many of the so-called quantum products are exaggerated by businesses. Judging whether a commodity is quantum depends on whether it uses quantum coherence and superposition. If not, it is not a quantum product.
Segmented sleep sleep less and better
Truth: it is known as only sleep for 4 hours a day, and strictly implement the segmented sleep method, that is, sleep for 2 hours first, wake up by the alarm clock, and then stay awake for 1 hour, and then sleep for 2 hours. Its a way to sleep less and sleep better. Such a sleep mode is only an example, and there is no comprehensive physical examination comparison before and after the event. It is just a personal subjective feeling, which is not convincing. Generally, to prove whether a method is effective or not, evidence-based medicine should be used, that is, random, double-blind, large sample, long-term research. Only when the research data are statistically significant different can it be proved that it is scientific and effective and can be popularized.
Current studies have shown that adults sleep between 6.5 and 7.4 hours, with the lowest mortality rate, while the mortality rate is significantly higher when the sleep time is less than 4.5 hours or higher than 9.4 hours. If you dont sleep for 19 hours in a row, your mental and physical state is the same as being drunk. Lack of sleep is likely to lead to decreased immunity, obesity, affect sexual function, but also accelerate the growth of cancer cells, the risk of cancer, prostate cancer or breast cancer is higher. Recently, the World Health Organization has regarded sleep deprivation as a carcinogen. People over 45 who sleep less than six hours a night are 200 percent more likely to have myocardial and cerebral infarction than those who sleep seven or eight hours.
For most adults, six to eight hours of sleep a day is recommended. Too little or too much sleep is not good. Sleep from 9:00 p.m. to 10:00 p.m. is the most scientific. Sleeping more than 11:00 p.m. belongs to staying up late. A good sleep standard is to lie in bed for about 15 minutes to fall asleep, and can also fall asleep quickly after getting up at night.
The micro plastics in seafood are harming countless Chinese people
The truth: seafood may contain microplastics is not a recent statement. It has attracted the attention of scientists as early as 2018. Microplastics exist widely in nature. Austrian scientists once conducted an experiment. They selected one volunteer from 8 Asian and European countries, such as Finland, Japan and Russia, to conduct diet control experiments. The final fecal samples provided showed that up to nine types of microplastics were found in eight samples. However, whether these micro plastics have caused substantial harm to human body is still unknown. So far, no study has shown that the microplastics in seafood have visible harm to human health. Moreover, when it comes to the impact of food safety on human body, we cant ignore the dose. This is similar to the principle of food additives, a small amount or a small amount of micro plastics, it is difficult to constitute a substantial impact on the human body.
Eye drops can effectively treat cataract
Truth: eye drops dont work so miraculously. Antibacterial eye drops are mainly used for infectious inflammation of eyelids, lacrimal passages, conjunctiva, cornea and other parts. Eye drops can be used to lubricate the eyeball, relieve visual fatigue, relieve trachoma, and reduce red blood streaks.
A thermos cup that can be sucked by a magnet is a good thermos cup
Truth: whether stainless steel has magnetism can really distinguish the quality of the thermos cup material? and be not so. According to the national standard gb9684-2011 national food safety standard stainless steel products, stainless steel materials for tableware include austenitic stainless steel, austenitic ferrite duplex stainless steel, ferritic stainless steel, etc., among which austenitic stainless steel has no magnetism.
The common 304 and 316 stainless steels are non magnetic austenitic stainless steels. The main alloying elements are iron, chromium and nickel, and the price is relatively high. Low nickel (nickel saving) manganese containing austenitic stainless steel is also nonmagnetic. It uses manganese and nitrogen to replace part of nickel, which is relatively cheap, but its performance and safety are not bad. In addition, referring to many relevant standards for thermal insulation containers in China, a qualified heat preservation cup should meet the requirements in terms of heat preservation efficiency, odor, impact resistance, sealing, hand handle and lifting ring connection fastness, and material health and safety. Therefore, whether it has magnetism is not the standard to judge whether the cup is good or not.
Source: Zhang Zutao, editor in charge of Beijing Youth Daily_ NT5054