Unhealthy diet makes children “not longâ€
“Among the children admitted to the pediatrics department of Peking University Third Hospital every day, 10% are short patients.†Wang Xinli, Pediatrics Department of Peking University Third Hospital, recently stated that except for genetic and pathological causes of abnormal growth and development, foreign fast food and other unhealthy The way of eating and drinking will also lead the children to “not long†to some extent.
Wang Xinli said that there are many reasons why children do not grow long. Common causes of short stature include familial short stature, delayed physical development, growth hormone deficiency, congenital ovarian hypoplasia, hypothyroidism, intrauterine growth retardation, Cartilage hypoplasia and so on.
External causes include nutritional imbalances, lack of sleep and environmental pollution. "From the point of view of short-sighted children, many children are fond of foreign fast foods, sodas, and other foods. Inadequate intake of dairy products has led to the development of children in advance to a certain extent, especially prone to precocious puberty, and at the same time promote skeletal development prematurely. It causes bones to close early before they grow and develop, and no longer grows. In addition, many children have high schoolwork pressure and usually have insufficient sleep, which also affects their height.â€
Wang Xuemei, a professor of pediatrics at the Third Hospital of Peking University, said that there is a special "growth curve" to measure the child's height standard. If the child's height is lower than the standard deviation of the average height of the same age group (a standard deviation is about 4). 5cm), which is short. If you are having difficulty grasping the use of the growth graph, you can ask the doctor at the time of your visit.
Wang Xuemei also reminded that there are many reasons for children’s dwarfness. Parents find that when the child is short, he must go to the hospital to check the exact cause of the dwarfness and then apply the medicine to the patient. Do not blindly listen to the so-called "increased drugs" and "higher shoes" that are advertised on the market.
â– Related links
How to judge children dwarf
Parents of 2-12 year-old children can roughly judge the child's height according to the following formula, ie age × 7 + 70 cm. Below this standard 5-7 cm should be alert to dwarfness.
At the same time, it should also pay attention to the child's growth rate, annual growth before the age of 3 is less than 5-7 cm, 4-10 years of annual growth is less than 4-5 cm, puberty is less than 7 cm per year, then the growth is slow, indicating that growth appears Deviation.
The P10 two-color display module all uses the JX5020 driver chip from Taiwan Macroaccumulation. The LEDs of each branch are correspondingly driven by an IC pin. One IC pin drives one LED. We use static cross-current The driving method ensures that the current of each IC can be guaranteed, and the normal guarantee will not cause the entire module to heat up due to the different scanning methods, which will cause damage to the IC, and the brightness of the LED will also be similar to the static cross current. The static cross-current drive ensures the stability of the entire screen.
When all the LED display modules are tested, paste QC, pass, and then perform the first semi-finished product test aging. The longer the aging time, the better, let him exceed 24 hours as much as possible, and then we will display the display module Put on the bottom shell, ready to start pouring.
The glue is filled with a fully automatic glue filling machine. After the ab component glue is combined, the filling is carried out according to the ratio of 10:1. It is better not to lower or increase the ratio. The ratio of 10:1 is just right. , It can be surface-dried in about two hours, and it will dry out in about 4-6 hours. Such glue will have a good guarantee for long-term use.
After the module is filled with glue, place the module on a horizontal plane, and test with a level meter, and then try to make each module as flat as possible, complete the 4 corners of the horizontal position on the same level, the choice of AB glue It is also very important. The AB glue choice must use more than 40 yuan per kilogram of glue. Its adhesion and durability will be very good. It cannot be filled with shoddy glue. It will crack after a long time. The screen will leak. Then put all the display modules in their masks and arrange them to start packaging.
Led Display Outdoor,Taxi Top Led Display,Full Color Led Display,Traffic Led Display
Shenzhen Wide Way Optoelectronics Co., Ltd. , https://www.wdmtrafficlight.com