The American Journal of Epidemiology once published a research conclusion. After conducting a series of follow-up studies on a series of newborns, researchers found that women who inhaled polluted air during pregnancy were more likely to have children born in the future. In terms of diseases, this is the first time researchers have confirmed that air pollution is linked to neonatal heart disease. The study also found that pregnant women living in severely polluted air are three times more likely to have heart disease than children born to pregnant women who breathe fresh air. Therefore, the express report "Home" suggests that in order to prevent your baby from being harmed by decoration pollution, it is recommended to conduct environmental protection testing on the living room. Once the decoration pollution is found to exceed the standard, it is best to treat it in time.
Case review
Neonatal defects difficult to take off decoration pollution
A few days ago, when a pregnant woman in Chongqing underwent the second prenatal examination, the doctor confirmed through B-ultrasound that the fetus had only one nostril in the belly of the pregnant woman, and her hands and feet were obviously damaged. After undergoing labor induction surgery, the doctor found that the baby girl was dead, and had hydrocephalus, rabbit lips symptoms, no nasal bones, only one nostril, her left and right hands were parallel, and her fingers had only two knuckles, which was better than normal fetus With one less knuckle, the right foot has only three toes.
According to the pregnant woman, she and her husband are in good health, and neither family has a history of inherited diseases and similar diseases. There are no abnormalities during pregnancy, and they are not engaged in toxic and harmful work. However, the husband of the pregnant woman recalled that their wives moved a total of 3 times from the year before pregnancy to the time they were pregnant, and they all stayed in new houses that were renovated soon.
Scientific research has proved that there are two main causes of fetal malformations: one is genetic defects that cause fetal malformations; the other is non-genetic genetic defects that cause fetal malformations, often caused by pregnant women exposed to teratogenic factors during pregnancy . The doctor pointed out that architectural decoration and furniture will cause indoor environmental pollution, which is manifested in formaldehyde, benzene series, radioactive materials and electromagnetic radiation pollution. Nowadays, home decoration is prevalent, and the concentration of some toxic gases such as formaldehyde and benzene series in the room is too high, which can easily lead to fetal malformation. During the development of the fetus, if it is affected by indoor pollutants, it will produce cell division and changes in tissues and organs, and mutations in the chromosomes are the main cause of infant deformity. Therefore, during pregnancy, especially in the first 3 months of pregnancy, the fetus will be greatly affected by the external environment. Pregnant women should stay away from the environment of high temperature, noise, electromagnetic radiation, lead and decoration pollution at this time.
At present, almost all obstetricians believe that the proportion of newborn defects has increased, and this has a greater relationship with environmental pollution and interior decoration.
Expert reminder
Decoration pollution is harmful to women and babies
Song Guangsheng, director of the Indoor Environment Monitoring Center of the China Interior Decoration Association, said that the harm caused to women and babies by harmful substances in the indoor environment caused by the decoration of homes and office buildings mainly includes the following aspects:
First, free formaldehyde in decorative materials causes women's menstrual disorders and menstrual abnormalities. Expert investigation found that free formaldehyde in various artificial boards and furniture of decorative materials is not only a suspicious carcinogen, but also may cause menstrual disorders and abnormal menstruation in women. When the concentration of formaldehyde in indoor air is 0.24-0.55 mg / m3 , 40% of women of school age have irregular menstruation; when the formaldehyde concentration in the air reaches 1.5-4.5 mg per cubic meter, 47.5% of women of school age have abnormal menstruation, manifested as dysmenorrhea and decreased menstruation.
Second, benzene contamination caused by paints, coatings, and adhesives can easily cause fetal developmental deformities and miscarriages. Medical research has proved that women are particularly sensitive to benzene inhalation. Long-term inhalation of benzene during pregnancy can cause fetal developmental deformities and miscarriage.
Third, radioactive pollution caused by construction and decorative materials can easily cause female infertility. The radioactive material in the indoor environment will also have an impact on the newlyweds' reproductive capacity.
Select formal governance agencies to remove decoration pollution
As people continue to pay attention to decoration and environmental protection, more and more home decoration can achieve decoration and environmental protection. But there are still some homes whose air quality is difficult to meet the standard, what should we do then? Environmental protection experts pointed out that ventilation, cultivation of flowers and plants, placement of activated carbon and bamboo charcoal can improve decoration pollution, but if you want to achieve obvious results in the short term, it is best to choose a regular governance agency to conduct targeted comprehensive treatment after finding the pollution source.
When selecting governance institutions, we must choose formal governance institutions. Zhou Yuepeng, head of Nanjing Haitai Nanomaterials Co., Ltd., said that regular governance institutions and products must have governance qualification certificates issued by authoritative departments with certification qualifications. "As an environmental protection industry, the Ministry of Environmental Protection's ten-ring certification is the most authoritative qualification certification in the industry, and the qualifications issued by some private industry organizations are not officially recognized." In addition, the product must have a disease control center above the provincial level The product's "non-toxic and harmless" test certificate is the most important basis for judging whether the product is "non-toxic and harmless" and whether it produces "secondary pollution". In addition, whether it has passed the ISO quality certification, whether it can sign contracts with customers, and promises to completely remove all kinds of toxic gases are also important factors for investigation. Finally, let's take a look at patent certificates and scientific and technological awards, which are all important basis for judging the strength of enterprises.
High Speed Door Motor And Control Box
Our company have German SEW Motor, Japan Mitsubishi Controller. Our own brand Hofic servo motor and controller. Chinese famous brand SEJ motor and Holip controller.
About our German SEW Motor and Japan Mitsubishi Controller: It is easy to find the ideal energy-efficient motor for your application at SEW. The series has a suitable design in its range for the globally applicable efficiency classes. Select the power and frequency within this motor design and you have already taken care of the most important selection criteria.All other motor options are of course available independently of the efficiency class. A comprehensive braking concept and cost-optimised built-in encoders ultimately complement the motor range. Comprehensive braking concept and combinations i.e. up to three different brake sizes per motor size featured in the range: Cost-optimised built-in encoders integrated into the motor. Motors for efficiency classes IE1 to IE4.Compact design saves space and costs. Future-proof, also as regards environmental protection (standards). Reduction in operating costs when using energy-efficient motors; our energy-efficient motors conform to the efficiency classes.
About servo High Speed Door Servo Control System: Our rolling gate servo control system is suitable for high speed and high usage soft and hard rolling gate. The whole system is in a small and light package, it has high torque and high operating speed, lower noise, high reliability, smooth and soft operating curves, it`s suitable for high speed and usage environment. The rolling curtain can be controlled by pull switch, push button, Bluetooth, ground radar, ground magnetic sensors. Operating Speed: 1M/s; Operating Width: ＜16 ㎡; Daily operating time: ＞2000 time; Rated voltage: 220v; Rated Output: 0.75 KW/1.5KW.
The system can operated via: 1) control box; 2) inching electronic control; 3) continuous automatic operation; 4) emergency stop; 5) single side operation box; 6) time delay; 7) ground radar and/or magnetic sensors. Please refer to Wiring Terminal for eternal connections.
System has fuse/safety wire shutdown switch for three-phase power protection, fuse/safety wire for operating circuit protection, and temperature sensing relay for motor protection.
Stroke Controller utilizes absolute value encoder. Connect the absolute value encoder and reducer via encoder`s axle, and fix the wings on to the reducer, than insert the aviation plug into plug receptacle.
The mounting screw for the control box must inspect regularly to prevent screw been getting loose and falling off. Check the internal and external wirings. Check and change the oil for the redactor on regular basis.
Precision: The system use Full closed-loop servo control and Double Encoder design. This is to ensure long operating life and to prevent overshooting during operating.
Stability: The system utilizes integrated design concept, in order to simplify internal wiring and prevent any function caused by wiring and terminal connections.
High Speed: Motor max speed is 2500 rpm; door max operating speed is 2 m/s.
Smooth: The torque servo system can adjust torque to the load automatically, and its speed curve mode step less speed regulating to ensure a smooth operation.
About SEJ motor and Holip controller: Three-phase asynchronous motor with magnetic brake has broad uses, It is suitable for various mechanical main drive and auxiliary drive, and it is also used for various required rapid stopping and correct positioning. The braking time within 0.2 second. Electric motor is added the DZM series direct current electromagnetic arrester by the basic series(Y series) electric motor.The protection class of electric motor part is IP44,the arrester part is IP23.if be applicable to bad environment can also make the arrester part into IP44,but customer have to put forward a special request while ordering,the manufactory can design a manufacturing exclusively. Its structure diagram is picture 1 and 2,picture 1 is the structure with hand release.Picture 2 is the structure without the hand release.Its operating principle BE, after being to make the retardation coil(6)to connect direct current power supply,because of the function of electromagnetic force,electromagnet(7)attract gag bit(5),and compress spring(24),make arrester disc(2)away from the friction surface of the gag bit(5)and shield(26)(the electrical motor can immediately operate normally).When the power supply cuts off after,the electromagnet(7)loses electromagnet force,the spring(24)releases the gag bit(5)and compress tightly to arrester disc(2),the arrester function,stop(the motor shaft)quickly,make electric motor shop turning to move,for the second time connect power supply will repeat above-mentioned action.
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Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.selfrepairinghighspeeddoor.com