Due to advanced refining techniques, it is difficult for consumers to distinguish real cooking oil from fake. To avoid buying dirty cooking oils, consumers should note the following characteristics: Cooking oil is golden brown, dark yellow Real cooking oil is usually brighter in color. If it is rapeseed oil, it will have a slight greenish yellow color, peanut oil will have a slight orange or yellow orange color. Fake cooking oil is usually dark in color, not bright but slightly dull. The usual color is golden brown, dark yellow, slightly black. Edible oil with sediment Real cooking oil has high transparency, no signs of solidification. When shaking the oil can, the oil feels smoother and easier to spread. However, fake cooking oil contains many impurities, different chemicals, so it is at the bottom of the bottle or it is deposited, solidified, the lower it is, the thicker it becomes. If you shake it gently, you will see that the oil flows smoothly, not smoothly. Cooking oil has a strange taste Real cooking oil has a greasy, characteristic aroma. If it is a specially extracted cooking oil such as peanut oil, rapeseed oil, etc., you will see its own flavor. When tasted, there is no sour or bitter taste. Fake cooking oil does not taste greasy and fragrant like real cooking oil. When tasting, there may be strange tastes due to adulterated oils or chemicals. Oil has a strange smell If you don’t want to taste it, you can also test the smell with your sense of smell. You just need to pour a little oil on the palm of your hand and smell it. Counterfeit cooking oil will have a bad smell, acrid, burnt or rancid, unpleasant. Because they contain too many impurities and are not carefully filtered, when put into plastic bottles, they will quickly react to create a burning smell like burnt plastic. In addition to distinguishing cooking oil by observing and tasting, housewives can also distinguish real cooking oil from fake by the following: – Take a small amount of iodized water into the bowl of cooking oil, if the blue color appears, it means that the cooking oil has been mixed with impurities containing starch. – Heat cooking oil to 150 degrees Celsius and then let it cool. If the oil has deposits, the oil has been adulterated. The more oil settles, the more impurities it shows.

Explaining the mechanism of action of this method, Mr. Quang said, test participants will be gargling with salt water. This solution is then put into a test tube and placed in the test device. If in other methods, the time to return the results will take from half an hour to several hours. Meanwhile, with this method, it only takes 10 seconds to produce results, Mr. Quang shared. Bkav CEO Nguyen Tu Quang. Photo: Trong Dat To do this, Bkav uses a frequency band of light shining into the test tube containing the patient’s saline solution, which is collected by the sensor at the output. Bkav’s artificial intelligence technology will help measure how much frequency is absorbed. Different frequencies of absorption produce different types of disease, in this case Covid-19. Mr. Quang said: “The naked eye can’t recognize the difference of those absorption frequencies. We have to train the AI ​​to know which is the specimen of the Covid patient and which is the human sample. not infected with Covid-19”. According to Quang, Bkav’s method of testing for Covid-19 with saline mouthwash solution will give faster results than conventional methods. The founder of Bkav company said that compared to the method of testing Covid-19 by breath, the salt water test technology is simpler, with the investment money for a testing unit much cheaper, even almost no cost. This test method has been tested by Bkav since the end of 2020 at the Central Hospital for Tropical Diseases. “Initial results were recorded as positive with a recognition rate of over 90%,” Mr. Quang said. According to CEO of Bkav, this business is the second company in the world to develop saline testing technology. Previously, a company in Israel had developed this technology.

Lightning can produce from 2 – 16% of the amount of hydroxyl. The hydroxyl radical is important in the atmosphere because it triggers chemical reactions and breaks down air pollutant molecules like methane. Decomposition of atmospheric pollutants Lightning may play a bigger role than we thought in a fundamental process that helps clean our air of pollutants, according to the results of a new study. Lightning strikes during storms produce large amounts of molecules called oxidizing radicals, which can break down gases such as carbon monoxide and methane in the atmosphere. These are atmospheric pollutants that can contribute to global warming and damage to the ozone layer. Carbon monoxide and methane enter the atmosphere from both natural and industrial sources. Methane is produced by the decomposition of plants, but is also released by oil and gas development and agriculture. Carbon monoxide and other polluting hydrocarbons can be generated by industries and wildfires. However, natural processes in the atmosphere, driven mainly by sunlight, have produced molecules called radicals, the most important of which are hydroxyls. These molecules are very chemically active (meaning that they are more likely to react with other molecules) and can react with pollutants to form new compounds that are harmless or potentially harmful. can be easily attached to water and released into the air. New research led by Pennsylvania State University meteorology professor William Brune has found that lightning produces far more hydroxyl molecules than previously known. His work shows that more than 10% of the supply of these scavenging radicals in the atmosphere can be generated by lightning storms. Use an airplane to fly through the storm Lightning’s ability to clean the atmosphere. The work involved flying NASA’s DC-8 research plane through deep convection thunderstorms to collect data. According to Professor Brune, this is not as dangerous as one might think. “Very interesting indeed. The pilots are phenomenal. They know what they’re doing. They know how to keep planes safe. But it’s really interesting because you can see deep convection and this is very close and personal,” said Prof. Brune. “We did this study in 2012, flying over central China. America and try to see what’s going into the storm chemically, what’s going to come up above. And to our surprise, we saw a very large amount of OHs (hydroxyl molecules). At first, we did not believe the signals received. They are huge, a thousand times larger than the largest mass we have ever seen.” The data collected from the aircraft was compared with data collected from radio receivers on the ground that track lightning flashes in the clouds. Both data sets confirmed the production of high amounts of hydroxyl radicals due to lightning strikes. Hydroxyl radicals are produced when the energy of lightning strikes breaks down water vapor in the atmosphere. “You can think of it like water that has removed the hydrogen atom and then wants to get that hydrogen back. So it becomes very active as it goes and tries to get the hydrogen back,” he said. That means the hydroxyl radical is very reactive with methane or carbon monoxide molecules. Climate change models need to be updated According to the scientists, about 1,800 lightning storms circulate around the planet, which leads the researchers to estimate that this phenomenon produces between 2% and 16% of the amount of hydroxyl present in the atmosphere.

A single lightning bolt can release up to a billion volts, tens of thousands of amps, travel at more than 434,000 km/h and in just a few millionths of a second reach 30,000 degrees Celsius – hotter than the surface of the Sun. Professor Brune admits that it is difficult to gauge the effectiveness of this process on a global scale. The results of this study were based on a limited number of flights over a small portion of the United States. There is still a lot of information that needs to be gathered to create a global picture. However, Professor Brune believes that the hydroxyl generated by lightning has a significant worldwide impact. Previous models suggested that lightning was not a significant contributor to the clean-up of the atmosphere. “Our best estimate right now is from 2%, which is quite important, to more than 10%, which is very important, for the total cleanup of the atmosphere. These estimates may change as our planet warms. Some climate change models show an increase in thunderstorm activity, which means more hydroxyl production and more cleaning of the atmosphere in the future. Other climate models suggest that there may not be much lightning, but lightning strikes will be more intense and may also alter the numbers. In any case, future models of climate change and global pollution will have to take into account this new information about the cleaning of the atmosphere, according to Professor Brune. Existing models may need updating.

– Vietnam: with pulp, petioles are usually intact, sometimes the roots are radiating around the tubers. The tubers are small, pale yellow, uneven in size, not smooth. – China: no pulp, dark orange, bright. The size is large, smooth and the tubers are quite even. Leaves are usually trimmed or cut clean. Pink: – Vietnam: The fruit is round, flat and smooth (like a chicken egg), the stem has many black spots, no grooves. The bark is pale and bruised. Fruit size is small and irregular in color. – China: the fruit is round, flat, slightly square, with four notches. Big and uniform in size. Beautiful glossy shell, bright red-orange, deep, usually without scratches. citrus apple Grapes: – Vietnam: Phan Rang grapes are usually small, red or light purple in color, berry, firm and hard to the touch. Very fresh rolls, short bunches. Strong sour taste. – America: darker skin, elongated, sweet, crunchy, little or no seeds. – China: round, large fruit, usually stored in cold containers. The fruit is light purple in color, with an opaque white powdery layer. The intestines have many seeds, soft. Slightly sour taste. Oranges: – Vietnam: Vinh oranges are round, small, greenish-yellow in color, the peel is often melasma. – America, Australia or South Africa: orange peel color is lighter than Chinese orange, but the surface of the peel is thicker, more stretchy, rougher. The price of American oranges at the Hoc Mon wholesale market is currently 56,000 VND/kg. – China: only seasonally, from about October of the lunar calendar to the New Year. The fruit is large, the fruit is dark in color, the skin is thin, the surface of the shell is smooth, the stem is slightly pointed and the bottom is slightly gourd; sometimes accompanied by branches and leaves. Seedless. Apple: – America: American green apples have dark green skin, crunchy, sweet. American red apples often have regular corners of the fruit, so they are easy to display and create beautiful shapes; shiny leather surface. – China: Chinese green apples have a pale green skin that is almost green-white, with a bitter taste. Red apples (also known as pentagon apples) are often different in size and size, the angle difference is uneven, so when standing, it is often tilted. Fuji apples, often confused by users as Japanese apples, have a light red color, uneven on the surface, and no luster. Chinese apples are also known as sugar green apples, similar in appearance to Fuji apples, light pink in color. This is the cheapest Chinese apple. Tangerine: Vietnam: Thai mandarin is usually only a very small amount grown in Lam Dong area, easily confused with Thai mandarin, China. Particularly, Tieu tangerines have large, yellow fruits; Thin-skinned sugar tangerines are often melasma and are not easily confused with Chinese tangerines.

Illustration. It is no coincidence that masking and removing dead cells go hand in hand. Deep cleansing of the skin by exfoliating step will help remove all dirt, open pores, more open. Thereby helping the skin to receive the best nutrients from the mask. At the same time, after cleansing your skin, gently massage your face in the direction from the inside out, from the bottom to the top for a few minutes. This step both helps the skin to be firmer and “heats” so that the essence can easily penetrate into the skin. Take advantage of the eye mask To save your time, you should combine the eye and face areas at the same time. Note that you must apply the eye mask first and then the face mask. In particular, you can take advantage of the eye mask for the lips or the dragon beard line on the corner of the nose. Because the eye mask usually has a bowl-shaped design, it can fit these two areas tightly, helping to increase the effectiveness of brightening and smoothing the skin. What type of mask helps to supplement intensive nutrients? As mentioned above, sheet masks are inherently rich in essence, so you only need to use 1 to 2 times per week. However, if you sometimes want to change the color of your life, or want to give your skin a bit of a party, then you can use foil masks instead of regular paper masks. The foil layer of the mask will combine with the temperature on the skin to form a barrier to help the skin absorb nutrients and prevent the mask from evaporating and losing water. Since then, the foil mask has a superior moisturizing effect compared to the paper mask. How long should the mask be on? 15 to 20 minutes is just enough time for the skin to absorb the water and nutrients in the mask. If you leave the mask on the skin for longer, the skin cannot absorb any more, and the water in the mask also evaporates, causing the skin to lose water.

As one of the leading beauty icons of Vbiz, Mai Phuong Thuy is also favored by fans as the big sister of the Miss village. The coronation has been more than 14 years, but the beauty of Miss Vietnam has not changed, she is even more beautiful and salty over the years. Therefore, she is always the center of attention when appearing with a superior appearance. Mai Phuong Thuy again received negative comments, saying that she touched cutlery, fixed her nose, made porcelain teeth, braces … Recently, Miss Hau officially spoke out when she was told that it was fake braces, she shared: “It’s too bad that I can replace broken teeth, but I have never had braces, braces but also slouch?”. Since the coronation, Miss Hau has had crooked teeth. She wanted to keep the charm of her teeth, so she did not change, only replacing teeth when broken. Those teeth have always accompanied Thuy to the present time. It can be said that Mai Phuong Thuy is one of the rare queens who do not follow the fashion of porcelain teeth or braces. Graceful crooked teeth followed her from the time she was a schoolgirl, to the time she was crowned Miss and until now, it has remained unchanged. She said that there are times when a tooth is broken and a new tooth is replaced, because when making porcelain teeth, it will be very painful plus removing the pulp like a tree branch is uprooted, the teeth will be weak and not durable, so she do not choose the method of making porcelain teeth. About braces, this is a pretty useful beauty method, but it is suitable for those who have too much or too little teeth. Because braces will change the jaw muscles a lot, this is a suitable measure for puberty until about 23 years old, to achieve the optimal effect. Mai Phuong Thuy is always proud of her bright smile and crooked teeth. She is always praised for having a smile as bright as a flower. It can be said that not making porcelain teeth helps Mai Phuong Thuy to retain her inherent beauty from the past to the present. To help you distinguish between porcelain teeth and naturally beautiful teeth with the naked eye, there are 5 identification bullet points for your reference and from there it is easier to distinguish: – Porcelain teeth usually have a brighter whiteness than real teeth, but the white color of porcelain will be a bit dazzling and not as natural as real teeth with good enamel. – Porcelain teeth are prone to blackening, which is something that real teeth rarely have. Because natural and artificial teeth are different, this is the easiest way to distinguish them when seen with the naked eye. If you can’t stand it, your gums will initially darken and darken over the years. Something that real teeth rarely do. – Porcelain tooth gaps are often tight and even like corn kernels, while real teeth have a slight gap, these gaps will be uneven and the tooth configuration is also uneven. – Porcelain teeth after making, if you do not clean carefully, will easily cause unpleasant odors that make you lose confidence even though you have a bright white teeth.

Specifically, Da Lat strawberries have uneven fruit shape, moderate fruit size, not too big, soft fruit, not smooth. Meanwhile, the Chinese strawberry, has high uniformity, large fruit, hard and smooth fruit. Image distinguishing types of strawberries. In terms of color, Dalat strawberries have an uneven red color, dark on the stem, the stem is slightly white. Chinese strawberries give a dark red color from head to stem, which looks very beautiful. Da Lat strawberries have uneven fruit shape, moderate size, soft fruit, not smooth. And Chinese strawberries have large, hard, smooth fruits, the uniformity between the fruits is high. When eaten, Dalat strawberries have a characteristic aroma and sour taste, while Chinese strawberries are friable and have no aroma. When sliced, it can be seen that the inside of Dalat strawberries is light red with white, while Chinese strawberries are dark red and not white. Image when halving strawberries. Many people also mentioned how to recognize that Chinese strawberries can be left for 7 to 10 days in a temperature environment of 25-32 degrees Celsius without wilting or rotten, while Da Lat strawberries only keep for up to 2 days. . Strawberries were brought to Da Lat by the French in the 40s of the 20th century. The soil here gives the quality and taste of strawberries very special. The growth characteristics of strawberries are suitable for temperate climates. Strawberries have red color, soft fruit, sweet and sour taste, characteristic aroma, so they are very popular with many people.