About the mechanism of vitamin A inhibit tumor growing. Some scientists believe that it is the enzyme which inhibiting the activation of carcinogenic factor in vivo.
However, some scientists believe that vitamin A compounds can stimulate the immune system against tumor. The palmitic acid retinyl ester can produce 100 times stronger anti-tumor effect than the other pair of the tumor immune response to BCG. Therefore, some scientists believe that vitamin A have the cancer preventive effect, this is perhaps one of the most important discoveries in cancer prevention. But taking large doses of vitamin A will lead to toxic reaction. So that scientists recommended that the important issue is how to synthesize and screening new vitamin A derivatives that no toxic effects, to prevent and treat cancer. With the social development and the improvement of people's living standards, a variety of diseases also showed an upward trend, timely take preventive measures can help friends away from the troubles of various diseases, especially the disease like cancer, vitamin A in the prevention of tumor has great help, it also the human’s indispensable vitamin.
In addition, vitamin A also has a great help on skin. But vitamin A has many types, how to choose have a little trouble. Whether we should use non-prescription vitamin A skin care products, or buy vitamin A drugs under the dermatologist’s guidance?
Retinol is the intact vitamin A molecule, it is a cosmetic raw material, used only in non-prescription products. Retinol can be broken down into other forms of vitamin A, appears in skin care products or prescription drugs. Prescription vitamin A drugs containing an ingredient called vitamin A acid. Vitamin A acid is much more effective than retinol, but has more possibility to cause skin irritation. No matter prescription or non-prescription, various forms of vitamin A are playing the role of cell communication factors. Which means they can command skin cells to work normally, even make skin cells become more dynamic. If the skin damaged by sun, the role of cell communication factor is huge, because after skin photoaging will produce rigid, unhealthy, abnormal cells.
Vitamin A and vitamin A acid have a role on promoting growth and can maintain normal epithelial, but partially coated vitamin A actually does not work on the skin, oral administration of vitamin A is good for skin diseases. Vitamin A acid topical applied to the skin has a strong pharmacological properties, the topical vitamin A acid can improve the aging skin due to exposure to the sun. Vitamin A acid to various skin diseases such as acne, ichthyosis, pityriasis rubra pilaris, unusual warts have a significant effect, can be used for the adjuvant treatment of psoriasis drugs. Eliminate fine wrinkles, reduce skin roughness, reduce pigmentation, make the skin becomes rosy.
Vitamin A acid is an intermediate product of the metabolism of vitamin A, vitamin A in the formation of alcohol metabolism into vitamin A aldehyde, then further turn into the vitamin A acid, but vitamin methanol and vitamin A aldehyde can metabolic transform each other, while vitamin A acid can not be restored to vitamin A aldehyde or alcohol. Less than 0.025% of the vitamin A acid cold cream ointment used to treat acne, facial rough and other diseases. 0.1% cold cream ointment used to treat lichen planus, pityriasis, vitiligo and other skin diseases.
According to tretinoin manufacturer, topical use tretinoin should avoid the fold parts of the thinner skin, and note that the concentration should not be too high (below 0.02% is appropriate), in order to avoid the reaction of erythema, scaling, burning sensation caused by the skin vascular violent expansion. To mild erythema peeling, burning sensation, mild slight pain and other local irritation is a normal reaction in the course of treatment, you should stick with, so that you can achieve better efficacy. If the reaction is severe, should immediately stop. Smear oily skin care products can ease the symptoms.
Source:http://www.cosprm.com
The application of tungsten in various industries
Steel Industry Most of tungsten applied in the production of special steels. The widely used high-speed steel was containing 9-24% of tungsten, 3.8-4.6% of chromium, 1-5% of vanadium, 4-7% of cobalt, 0.7-1.5% of carbon.
Magic effects of coconut oil
According to records, coconut oil can be regarded as the nobility of skin care plant extracts. It was rich in exotic tension of tropical plants, which can enhance the contractile force of the pores, perfectly beautify and nourish the skin.
Exploring the Potentials of Nano-Aluminum Powder
Nano-aluminum powder, a material with remarkable properties due to its minuscule particle size, is revolutionizing various industries with its high reactivity and large specific surface area. Unlike its bulk counterpart, nano-aluminum powder begins to oxidize at a lower temperature of 550°C, compared to the 950°C oxidation point of ordinary aluminum. This lower ignition energy and full combustion without apparent cohesion make it a superior choice for applications requiring high energy and efficiency. The unique characteristics of nano-aluminum powder, such as faster burning rates and greater heat release, are largely influenced by its synthesis method, which determines its particle size, surface area, and shape.
