Sunlight is the source of all living things. The planet we live in is so vibrant that it comes from the sun. The sun we see is the visible part of the solar electromagnetic radiation. When the vibration is transmitted, the vibration is transmitted at the speed of light. The physical phenomenon of time, the relationship between electromagnetic radiation and visible light is shown in the figure below. 
When the wavelength of the vibration wave propagating at the speed of light is from 1 km to 10 picometers, the familiar radio waves, mobile communication, microwaves transmitted by television, military radar, medical X-rays, gamma rays, etc. are all different. Solar radiation is only part of the application of wavelength propagation at the speed of light.
The range of solar radiation that we can test on Earth is about 295nm-2500nm, solar radiation below 295nm and wavelengths greater than 2500nm. Due to the strong absorption of ozone, water vapor and other atmospheric molecules in the Earth's atmosphere, we do not observe on the ground. To. When the wavelength is in the range of 400nm-700nm, the human eye can feel the light emitted by these wavelengths. We call it visible light. The solar radiation is mainly concentrated in the visible part. In the visible range, the different wavelengths of radiation we observe are different. The light of the color. The light of these colors is mixed together, which is the white light we usually see, and the white light is expressed by the color temperature.
The solar spectrum is only in the range of wavelengths from 300 nm to 1100 nm. Usually, we divide the spectrum of this range into several parts:
1. Ultraviolet: The wavelength is from 300 nm to 400 nm.
2. Visible light: The wavelength is from 400 nm to 700 nm.
3. Infrared: The wavelength is from 700 nm to 1100 nm.
Solar radiation plays an important role in the evolution of life of all living things on Earth. Scientists use spectroscopy to analyze electromagnetic radiation and visible light. We study solar light, artificial light sources, and plants to absorb light that are inseparable from the spectrum. In terms of agricultural planting, we mainly study the application of wavelengths from 300nm to 1100nm. The figure below shows the solar spectrum radiation distribution curve of ICE60904-9, which is an important reference.
In the visible range, the most sensitive light of the human eye (that is, the light we feel the brightest) is yellow light, and the most insensitive light of the human eye is blue light. When the sky appears rainbow, we often see yellow, red and green, and the blue color is a small part. As shown below.
The most sensitive light in plants is blue light and red light, which is different from the light we see in humans. Therefore, plants need to be measured by the amount of electromagnetic radiation. Because plants can not only "see" visible light from 400nm to 700nm, plants can "see" invisible light, such as ultraviolet light and infrared light.
This is very important. We use the principle of electromagnetic radiation to study the absorption spectrum of plants, instead of using the concept of light.
Photosynthesis between plants and plants <br> Plants are the only creatures that convert sunlight energy into mass. The photosynthesis of plants is the foundation of all life on earth. Plants not only provide humans with the oxygen necessary for survival, but also provide humans with Food and energy. At present, there are more than 300,000 plants known.
Plants are the only creatures in all living things that can convert solar radiant energy into organic matter. They are the basic organisms that humans and other animals depend on for survival.
The process by which plants convert solar radiant energy into organic matter is called plant photosynthesis. To be exact, photosynthesis refers to the biochemical process by which plants use photosynthetic energy to convert carbon dioxide and water into organic matter and release oxygen. The figure below shows the chemical reaction pattern of plant photosynthesis.
The photosynthesis of plants requires carbon dioxide and water to complete. Under photosynthesis, plants absorb carbon dioxide and water, release oxygen and produce organic matter. Chloroplasts are places where photosynthesis is used by green plants. The picture below shows the green leaf structure of the plant. There are a large number of chloroplasts in the green leaf structure.
The photosynthesis of plants can only occur in chloroplasts, which are structures for photosynthesis in green plant cells. The chloroplasts of plants mainly contain chlorophyll (chlorophyll a and chlorophyll b), β-carotenoids (carotene and lutein), and photosensitin (Pfr, Pr). The following figure shows the process of absorption and reflection of light by chloroplasts. Chlorophyll a and chlorophyll b mainly absorb blue-violet light and red light. Carotenoids mainly absorb blue-violet light, and photosensitizer mainly absorbs red light and far-infrared light. The light absorbed by these pigments can be used for photosynthesis. The chlorophyll content is the highest, and chlorophyll absorbs little green light, and most of the green light is reflected, so the chloroplast appears green. The main component of the leaf tissue of plants is the chloroplast, so the leaves of the plants are also green.
Absorption spectra of plants under solar radiation <br> We study the photosynthesis of plants, mainly by studying the absorption of solar radiation by plants, in order to reveal the basic principles of plant photosynthesis. Then, the spectrum of photosynthesis absorbed by plants is shown in the following figure. The effective spectrum of photosynthesis of green plants is 380nm-735nm. The photosynthesis of plants mainly absorbs red and blue light. In addition, there are a small part of ultraviolet and infrared rays. The photosynthesis of plants absorbs little green light. Since the spectrum of sunlight is continuous within the range of plant photosynthesis, the spectrum absorbed by plants is also continuous, but the amount of absorption is different.
Chlorophyll a and chlorophyll b have two peaks for the absorption of sunlight, one between 430nm and 450nm, the other between 620nm and 660nm, and the absorption of β-carotenoid between 440nm and 500nm. The absorption peaks are 380 nm, 660 nm, and 730 nm.
By analyzing the absorption spectrum of plants, we can use the artificial radiation source of the same wavelength as solar radiation to radiate plants, so as to achieve the same photosynthesis effect as sunlight, which is the basic idea of ​​plant artificial radiation sources.
Plant artificial radiation source and solar radiation have the same wavelength and light color in the radiation, and there is no difference. Therefore, there is no artificial radiation source to cause variation in photosynthesis of plants. Unlike transgenic plants, artificial artificial radiation sources are in physical and Chemically, it has exactly the same effect as solar radiation. The only difference between artificial radiation source and solar radiation is that the artificial radiation source spectrum cannot be as continuous as the solar radiation, but it is also at this point, LED artificial radiation source. Plant photosynthesis can be more effective because the plant absorption spectrum is also peaked and discontinuous. Of course, the artificial source is to increase the cost of planting.
The commonly used plant lights should be called Plant Artificial Radiation Sources. We call it PARS. We apply the theory of electromagnetic radiation to the correct application of plant cultivation. However, most manufacturers of plant growth lamps use the concept of light to express plant lights, which may cause users to use plant lights. Application error.
The plant light was renamed as the plant artificial radiation source PARS, which was first proposed in this field. In fact, plant photosynthesis only accepts electromagnetic radiation of different wavelengths, instead of receiving light, the effective photosynthetic PPFD (PAR) value of plants is The unit of measurement for plant photosynthesis, and the illumination effect of the source on the object is measured by the luminosity LUX. When a plant artificial radiation source is added to invisible radiation, the LUX index is essentially ineffective. We use PARS to represent the artificial source of plant radiation, which is the “plant lamp†that other manufacturers say.
The plant artificial radiation source made by using LED is called LED-PARS (LED Plant Artificial Radiation Sources). Compared with other artificial radiation sources, LED-PARS has the following characteristics:
1) The wavelength can be chosen to make a spectrum that meets the needs of the plant's absorption spectrum.
2) The conversion efficiency of electric power to radiation power is high.
3) Light quantity and light quality are easy to adjust.
4) Uniform radiation distribution and high plant absorption efficiency.
5) The automatic control of electromagnetic radiation is easy to implement.
6) The radiation attenuation rate is low, and the product life span is more than 30,000 hours.
7) The power consumption per square meter is low and the production cost is low.
8) Low-voltage DC drive for high safety.
9) The product cost is high and the initial investment is large.
Series products
Rendering
Balcony Garden is an emerging family gardening product. At present, domestically developed home gardening products are mainly auxiliary equipment such as planting flower pots and soilless planting pipe racks. There is no professional product in artificial radiation source products. This product is The national utility model patent product is a product specially developed for plant artificial radiation source. The product adopts modular design technology and is equipped with patented technology of LED single secondary optical shell. It has uniform radiation, high radiation efficiency, good practical effect and wide use. In the shelf plant factory, greenhouse nursery, balcony gardening and other places, in the radiation efficiency and use effect in the domestic leading position.
Test Attributes
Whole blood, serum, or plasma may be used for testing
Results available in only 5-10 minutes
Easy to use
Results can be read visually
No need for an analyser
Cost effective method for assisting in diagnosing COVID-19 disease
Principle
The COVID-19 Rapid Test is a qualitative lateral flow immunoassay for the simultaneous detection of IgM and IgG antibodies to SARS-CoV-2 in whole blood, serum or plasma specimens.
The test cassette contains recombinant SARS-CoV-2 antigen conjugated to coloured particles. When a specimen is added to the sample well of the cassette, any IgM and IgG present in the specimen will bind to the antigen conjugate, forming coloured coronavirus antigen-antibody complexes. This mixture migrates laterally along the membrane to the test region. In this test region, anti-human IgM and anti-human IgG have been immobilised onto the membrane. These capture any IgM and IgG complexes that have formed, resulting in the appearance of coloured lines.
Therefore, if the specimen contains SARS-CoV-2 IgM antibodies, a coloured line will appear in the IgM test line region. If the specimen contains SARS-CoV-2 IgG antibodies, a coloured line will appear in the IgG test line region. To serve as an internal control, a coloured line will always appear in the control line region, indicating that the proper volume of specimen and buffer has been added, and correct procedure has been followed.
Storage Conditions
+ 2 - 30 °C, DO NOT FREEZE. Unopened test cassettes and buffer are stable for up to 24 months from date of manufacture.
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