Drinking green tea on an empty stomach can easily hurt the stomach
The health effects of green tea are well known to everyone. With the deepening of research on the role of green tea in the world, green tea seems to have become the best choice for health care for many people. Many people keep tea cups all day long, green tea does not leave the mouth, and someone in the morning gets a cup of green tea as a habit. But Weng Kun, an associate researcher at the National Tea Quality Supervision and Inspection Center, reminded that drinking green tea on an empty stomach is not good for gastrointestinal health care.
Weng Kun said that green tea is tea that has not been fermented, and retains more natural materials in fresh leaves. Among them, tea polyphenols and caffeine can retain more than 85% of fresh leaves. The components in green tea are anti-aging and anti-cancer. Anti-cancer, anti-bacterial, anti-inflammatory, etc. are indeed effective and are unmatched by other teas.
However, it is also these natural ingredients that, if consumed on an empty stomach, have an adverse effect on the human body. On an empty stomach, some of the active substances in the tea bind to the proteins in the stomach, causing irritation to the stomach, which can easily hurt the stomach.
In addition to stimulation of the gastrointestinal tract, drinking tea on an empty stomach will also dilute the digestive juice and affect digestion. At the same time, when fasting, some of the tea's contents are easily absorbed in excess, such as caffeine and fluoride. Caffeine can cause symptoms such as palpitation, dizziness, weakness in the hands and feet, and convulsions in some people, and it is medically known as the phenomenon of “tea intoxicationâ€. Once the phenomenon of tea drunk occurs, you can eat a piece of sugar or drink a cup of sugar water. The above symptoms can be relieved and disappear. If fluoride accumulates in the body, it can cause intestinal diseases and affect kidney function.
Elderly people suffering from stomach and duodenal ulcers are even less likely to drink green tea on an empty stomach in the morning. The tannic acid in tea will stimulate the gastrointestinal mucosa, leading to aggravation of the disease and indigestion or constipation.
Everything You Need To Know About LED Lighting
LEDs are a simple invention with huge potential to change the lighting industry for the better. Don`t know much about them? Here are three big things you need to know to get your feet under you:
1.What Does LED Stand For?
2.LED stands for light-emitting diode.
A diode is an electrical device or component with two electrodes (an anode and a cathode) through which electricity flows - characteristically in only one direction (in through the anode and out through the cathode). Diodes are generally made from semi-conductive materials such as silicon or selenium - substances that conduct electricity in some circumstances and not in others (e.g. at certain voltages, current levels, or light intensities).
2.A light-emitting diode is a semiconductor device that emits visible light when an electrical current passes through it. It is essentially the opposite of a photo-voltaic cell (a device that converts visible light into electrical current).
Did You Know? There is a similar device to an LED called an IRED (Infrared Emitting Diode). Instead of visible light, IRED devices emit IR energy when electrical current is run through them.
1.How Do LED Lights Work?
2.It`s really simple actually, and very cheap to produce, which is why there was so much excitement when LED lights were first invented!
The p-type and n-type materials are created by introducing the original material to atoms of another element. These new atoms replace some of the previously existing atoms and in so doing, alter the physical and chemical structure. The p-type materials are created using elements (such as boron) that have less valence electrons than the intrinsic material (oftentimes silicon). The n-type materials are created using elements (such as phosphorus) that have more valence electrons that the intrinsic material (oftentimes silicon). The net effect is the creation of a p-n junction with interesting and useful properties for electronic applications. What those properties are exactly depends mostly on the external voltage applied to the circuit (if any) and the direction of current (i.e. which side, the p-type or the n-type, is connected to the positive terminal and which is connected to the negative terminal).
Application of the Technical Details to LED Lighting:
When a light-emitting diode (LED) has a voltage source connected with the positive side on the anode and the negative side on the cathode, current will flow (and light will be emitted, a condition known as forward bias). If the positive and negative ends of the voltage source were inversely connected (positive to the cathode and negative to the anode), current would not flow (a condition known as reverse bias). Forward bias allows current to flow through the LED and in so doing, emits light. Reverse bias prevents current from flowing through the LED (at least up until a certain point where it is unable to keep the current at bay - known as the peak inverse voltage - a point that if reached, will irreversibly damage the device).
LED Lighting
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