What can I eat in winter?
The timing has entered the winter, many people have cold hands and feet, not only with the cold weather, but also with the personal constitution. From a modern medical perspective, there are many reasons for the cold, such as:
(1) People with iron deficiency have less hemoglobin, which affects the ability of blood to carry oxygen, resulting in obstacles in the organization's energy metabolism. People may feel abnormally cold due to insufficient calories.
(2) When thyroid hormone is insufficient, the blood circulation will be slowed down and the heat production will be insufficient.
(3) People with low blood pressure have insufficient peripheral blood circulation, and human tissues do not get enough oxygen and energy, and they also chill.
Therefore, diets should include lean meat, fish, beans, mushrooms, black fungus and other foods rich in iron and iodine. Also eat more vegetables and fruits rich in vitamin C to promote iron absorption. Intake of iodine-rich kelp, fish, shrimp, oysters, etc. can promote the synthesis of thyroxine in the body. In addition, drinking a small glass of red wine before going to bed; cultivating exercise habits can improve the body's blood circulation, and the body’s ability to withstand the cold will gradually increase.
Chinese medicine explains coldness from the perspective of yang deficiency. The human body is the whole body of the balance of Yin and yang. It is healthy in the balance of yin and yang. However, if one side falls, people will have adverse reactions. Fear of cold is actually the result of Yang Han's inner cold. It is manifested in the body that the ability to keep out the cold is poor. Even if it is worn more than others, it is still cold in both hands and feet. To eliminate the feeling of cold, in addition to diet conditioning and cold-resistant exercise, it should also be tailored to individual physique.
Each person's physique is different and needs to be adjusted for different reasons. It is not possible to chase and tonic themselves. Otherwise, there may be misbehavior such as: dry mouth. If you want to make up for the lack of yang through the use of tonic, be sure to take the medicine under the guidance of a doctor and wish everyone a warm winter.
Ultrasonic waves propagate in the liquid, causing the liquid and the cleaning tank to vibrate together at the ultrasonic frequency. When the liquid and the cleaning tank vibrate, they have their own natural frequency. This vibration frequency is the sound wave frequency, so people hear the buzzing sound. With the continuous development of the cleaning industry, more and more industries and enterprises have used ultrasonic cleaning machines.
For the principle of ultrasonic cleaning machine, the high-frequency oscillation signal sent by the ultrasonic generator is converted into high-frequency mechanical oscillation by the transducer and propagated to the medium-the cleaning solvent. The ultrasonic wave radiates forward in the dense and dense phases in the cleaning liquid. The flow of liquid produces tens of thousands of tiny bubbles with a diameter of 50-500μm, and the tiny bubbles existing in the liquid vibrate under the action of the sound field. These bubbles form and grow in the negative pressure zone where the ultrasonic wave propagates longitudinally. In the positive pressure zone, when the sound pressure reaches a certain value, the bubbles increase rapidly and then suddenly close. And when the bubble is closed, a shock wave is generated, and thousands of atmospheres are generated around it, destroying insoluble dirt and dispersing them in the cleaning liquid. When the group particles are wrapped in oil and adhere to the surface of the cleaning part, the oil is emulsified and solid Particles and detachment, so as to achieve the purpose of cleaning parts purification. In this process known as the "cavitation" effect, the closed bubble can form a high temperature of several hundred degrees and an instantaneous high pressure of more than 1,000 atmospheres.
The advantages of the ultrasonic cleaning machine are: the ultrasonic cleaning effect is good, and the operation is simple. The sound that people hear is a sound wave signal with a frequency of 20-20000 Hz. The sound wave above 20000 Hz is called an ultrasonic wave. The transmission of the sound wave propagates longitudinally according to a sinusoidal curve, producing a large number of small bubbles. One reason is that partial tensile stress occurs in the liquid to form negative pressure. The decrease in pressure makes the gas originally dissolved in the liquid supersaturate and escape from the liquid and become small bubbles; the other reason is that the strong tensile stress tears the liquid apart. "A void is called cavitation.
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