Which Nanomaterials are used in cosmetics?
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Saudi Aramco, the world's largest oil company, released a briefing showing a profit of 181.64 billion Saudi riyals in the second quarter of 2022, once again setting a record for quarterly earnings after the company went public in 2019. Continue to maintain the status of "the most profitable company in the world".
Saudi Aramco said that the increase in profit in the second quarter was mainly due to higher crude oil prices and sales and improved profit margins in the refining processing and sales division, while the company's second-quarter shareholder dividend will reach 70.3 billion Saudi riyals.
In the first half of this year, the conflict between Russia and Ukraine disrupted the global energy market, with crude oil prices rising above $120 at one point, causing refining profits to soar, not only for Saudi Aramco, but also for companies such as ExxonMobil and Shell. ExxonMobil's second-quarter net profit tripled, while Shell's second-quarter profit hit a record high.
According to data released by the Saudi National Bureau of Statistics on July 31st, the country's GDP grew by 11.8% in the second quarter of 2022 compared with the same period last year.
The latest report released by the International Monetary Fund (IMF) on July 26th shows that Saudi Arabia's economic growth forecast for 2022 remains unchanged at 7.6%, which ranks first among the world's major economies.
Because of the turbulent international situation, the supply and prices of many international bulk nanomaterials are still very uncertain.
Nanomaterials are widely used in cosmetics because of their unique optical, thermal and electromagnetic properties. Nanomaterials can be used to improve the sensory effect and stability of cosmetics. For example, nanometer zinc oxide and titanium dioxide can not only make cosmetics feel better, apply more evenly, but also provide better sunscreen. Similarly, the nano-silver material has a better antibacterial spectrum than its macroscopic particles.
Which Nanomaterials are used in cosmetics?
Since 2002, South Korea has successfully used nano-silver in cosmetics, filling the gap in the nano-silver cosmetics industry. The emergence of nano-silver cosmetics has attracted the attention of many people. It not only has the function of makeup. At the same time, it also plays an antibacterial role to reduce the damage of external bacteria to human skin.
Silver nanoparticles kill bacteria by destroying the cell wall of bacteria, and their antibacterial activity depends on the size of the particles. Smaller particles have better effect. Silver nanoparticles show potential antibacterial effect on infectious microorganisms (Escherichia coli, Staphylococcus aureus, etc.).
Titanium dioxide Nanoparticles
Because of its small particle size and high activity, nanometer titanium dioxide can not only reflect and scatter ultraviolet rays, but also absorb ultraviolet rays, so it has stronger barrier ability to ultraviolet rays. Compared with some organic UV protective agents of the same dose, nano-titanium dioxide has a higher absorption peak in the UV region, and what is more valuable is that it is also a broad-spectrum shielding agent, unlike organic UV protective agents, which only absorb UVA or UVB. It can also pass through visible light, unlike paint-grade TiO2 which cannot pass through visible light.
Zinc oxide Nanoparticles
Ultraviolet rays in sunlight can be divided into UVA (320mm-400mm), UVB (290mm-320mm) and UVC (200mm-290mm) according to their wavelengths. UVB is the main source of burns, indirect pigmentation and skin cancer. UVA has strong penetration and accumulation. Although most of UVC is absorbed by the ozone layer, the damage caused to human beings can not be ignored because of its short wave length, high energy and increasing destruction of the ozone layer.
When nanometer zinc oxide is added to sunscreen cosmetics, it can first provide effective protection against UVA and UVB. Secondly, nanometer zinc oxide has excellent dispersion and transparency, and third, it is safe and non-irritating. Fourth, it has good light stability.
Silicon dioxide Nanoparticles
Nano silicon dioxide has an emission effect on ultraviolet rays, which belongs to inorganic components, and is well integrated without any repulsion, and its own non-toxic, tasteless and white powder can be simply colored. It plays an important role in the development of UV-resistant products, and its price is also very good.
Nano alumina has infrared absorption properties, and it has a good absorption effect on 80 nm ultraviolet, so it can be used as an additive or filler.
The price is influenced by many factors including the supply and demand in the market, industry trends, economic activity, market sentiment, and unexpected events.
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Ukrainian media recently reported that Ukraine will build a food transfer station in the Chernovze region, and the first phase is scheduled to be completed by the end of 2022. According to reports, the completion of the project will help ease the current congestion in grain shipments, and it is estimated that the transfer station will be able to handle 3 million tons of grain per year and store up to 200000 tons of grain at the same time.
According to the Cuban Electric Union on August 8, affected by the fire at the oil reserve base in Matansas province, the Antonio Guiteras thermal power plant near the oil storage base stopped operation at about 13:00 local time. It is reported that the shutdown of the thermal power plant is due to water shortage, and although measures have been taken to supply water to the plant through pipelines, it is still not enough to maintain its operation. The Cuban electricity Union said it could not guarantee that the thermal power plant would resume operation during peak hours.
According to a monthly monitoring report released by the Copernicus Climate change Service, an EU climate monitoring agency in Bologna, Italy, in July 2022, the Antarctic sea ice area was the lowest in 44 years of satellite monitoring records, 7% lower than the average.
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