"Formaldehyde" has been crowned as the "number one killer" of indoor pollution. It mainly comes from synthetic materials used in artificial boards, furniture and decoration, as well as synthetic fabrics such as carpets. Concentration exceeding the standard can cause nausea, vomiting, cough, chest tightness, Asthma or even emphysema is one of the main pollutants in indoor air.
However, in addition to formaldehyde, a large number of chemical materials used in building decoration materials, such as paints, solvents, thinners, adhesives, benzene series, such as benzene, toluene, xylene, etc., long-term inhalation of benzene concentration Air is prone to chronic poisoning of benzene, causing allergic dermatitis, laryngeal edema and thrombocytopenia, and severe aplastic anemia. According to the relevant departments, in the newly renovated new home, the formaldehyde content almost exceeded the standard.
Many consumers choose to use some beneficial green plants to purify the air to reduce some indoor pollution. However, family plants should be carefully selected, not a lot of good, some plants can effectively absorb formaldehyde, but some may bring a lot of discomfort to the human body, what plants should be placed, must be carefully selected.
1. Chlorophytum
The spider plant, which is placed in a small space such as a bathroom, window sill or shelf, is very striking. Its slender, graceful foliage can effectively eliminate 80% of the harmful substances in 1 cubic meter of air in 24 hours. It removes 86% of formaldehyde; it can absorb carbon monoxide and nitrogen peroxide emitted from stoves, electrical appliances and plastic products, and fully purify the air. The leaves of the spider plant are naturally beautiful, and when it is leafy, it occasionally rotates slightly. And taking care of it is not complicated at all.
Light conditions: neutral plants
Required maintenance: keep the soil moist
Can be removed: formaldehyde
2. Aloe
The flower bud said, "Aloe vera is a strong hand, and formaldehyde is scared to hide." Under the condition of 24 hours of illumination, 90% of the formaldehyde contained in 1 cubic meter of air can be eliminated.
Can be removed: formaldehyde
3. ivy
Ivy can effectively resist carcinogens in nicotine. Through the tiny pores on the leaves, Ivy can absorb harmful substances and convert them into harmless sugars and amino acids.
Light conditions: neutral plants, suitable for planting in the semi-shade
Required maintenance: keep the soil moist and regularly fertilize
Can be removed: formaldehyde, nicotine
Alnico (AlNiCo) is the first developed a permanent magnet is made of aluminum, nickel, cobalt, iron and other trace metals composition of an alloy.According to different production process is divided into sintered Alnico (Sintered AlNiCo), and cast aluminum nickel and cobalt (Cast AlNiCo).Product shape of the round and square. Sintered products limited to the small size, their production out of rough tolerance is better than the rough cast product can be better workability.
Alnico alloys can be magnetised to produce strong magnetic fields and have a high coercivity (resistance to demagnetization), thus making strong permanent magnets. Of the more commonly available magnets, only rare-earth magnets such as neodymium and samarium-cobalt are stronger. Alnico Magnets produce magnetic field strength at their poles as high as 1500 gausses (0.15 teslas), or about 3000 times the strength of Earth's magnetic field. Some brands of alnico are isotropic and can be efficiently magnetized in any direction. Other types, such as Alnico 5 and alnico 8, are anisotropic, with each having a preferred direction of magnetization, or orientation. Anisotropic alloys generally have greater magnetic capacity in a preferred orientation than isotropic types. Alnico's remanence (Br) may exceed 12,000 G (1.2 T), its coercivity (Hc) can be up to 1000 oersteds (80 kA/m), its energy product ((BH)max) can be up to 5.5 MG·Oe (44 T·A/m). This means that alnico can produce a strong magnetic flux in closed magnetic circuits, but has relatively small resistance against demagnetization. The field strength at the poles of any permanent magnet depends very much on the shape and is usually well below the remanence strength of the material.
Alnico alloys have some of the highest Curie temperatures of any magnetic material, around 800 °C (1,470 °F), although the maximal working temperature is normally limited to around 538 °C (1,000 °F).[4] They are the only magnets that have useful magnetism even when heated red-hot.[5] This property, as well as its brittleness and high melting point, is the result of the strong tendency toward order due to intermetallic bonding between aluminium and other constituents. They are also one of the most stable magnets if they are handled properly. Alnico magnets are electrically conductive, unlike ceramic magnets.
Alnico magnets are widely used in industrial and consumer applications where strong permanent magnets are needed; examples are electric motors, electric guitar pickups, microphones, sensors, loudspeakers, magnetron tubes, and cow magnets. In many applications they are being superseded by rare-earth magnets, whose stronger fields (Br) and larger energy products (BHmax) allow smaller-size magnets to be used for a given application.
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