British Physician: Look at the phone at least 40 centimeters
When texting or using a mobile phone to surf the Internet, people will subconsciously approach the screen of the mobile phone. As time passes, the eyes will become sour and bloated, and sometimes the phenomenon of unclear vision will appear when looking up at other things. According to the British "Daily Mail" reported on August 16, British ophthalmologists pointed out that the mobile phone screen has a great impact on the eyes, and even lead to genetic changes. Alain Bryant, the founder of the UK focused clinic and eye surgeon, pointed out that the popularity of smartphones has made young people with myopia more and more common. Since the advent of the smartphone in 1997, the number of myopia has risen by 35%. In the next 10 years, the problem of myopia will continue to deteriorate, and the number of myopia may increase by 50%. People use their mobile phones for an average of 2 hours a day. Using computers and watching TV, their vision may be seriously impaired. And, when people use mobile phones, the average distance from the eyes to the screen is about 30 centimeters, which is far lower than the average distance of 40 centimeters when reading newspapers and reading books. This also brings great harm to the eyes.
Under normal circumstances, after 21 years of age, myopia will not deepen, but long-term close-up look at the screen will change the human gene, making myopia continues to deteriorate until more than 40 years old. To this end, experts suggest that people should be out of contact with the sun every day for a period of time, have a protective effect on the eyes; when using a mobile phone, try to maintain a distance of more than 40 cm, if you can not see the screen, you can increase the mobile phone size; parents try not to Equip your child with a cell phone.
Low content monomer plant extract, main content 1%-50%. Including but not limited to Pu-erh tea extract 40%, rhodiola rosea extract 1%, 3%, pueraria root extract 30%, 40%, celery extract 5%, salvia miltiorrhiza extract 5%, 10%, burdock seed extract, salicin 5%, aloe vera extract, gynost' pentaphyllum extract 20%, green tea extract, ginseng extract, chlorogenic acid extract.
Plant extraction process
1. Select plants/herbs. No more than ancient prescriptions, prescriptions, folk herbs to find. At present, common and uncommon herbs have been studied. At present, it is mostly to increase the amount of medicinal materials to extract and separate components with low content, or to find medicinal plants that have never been studied from miao medicine, Tibetan medicine, Mongolian medicine, Africa, Latin America and other places.
2. The extraction. Solvent petroleum ether, n-hexane, cyclohexane, benzene, chloroform, ethyl acetate, n-butanol, acetone, ethanol, methanol, water (low polarity → high polarity). Daily medicine decoction effective, water and ethanol and other solvents with large polarity, such as artemisinin boiling ineffective extraction with petroleum ether and other solvents with small polarity. Common medicinal materials water/alcohol/ether to go through, separation and identification of more compounds.
3. The separation. This is the most important work. In the solution extracted from the second step, there are dozens of compounds, usually by column chromatography, which is often referred to as the column flushing. It's a lot of work, it's boring, it's low tech. A master's student might do this every day for two years. The column for separating compounds, as shown below, is as large as 2 meters high and as small as 10 centimeters. Change the solvent condition of mobile phase, change the material of column, different conditions and different separation principles of column repeatedly punching, can be separated from the monomer compound.
Low Content Monomer,Rhodiola Rosea Extract,Kudzu Root Extract,Herbal Extract Apigenin
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