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1840 results about "Photosynthesis" patented technology

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms' activities. This chemical energy is stored in carbohydrate molecules, such as sugars, which are synthesized from carbon dioxide and water – hence the name photosynthesis, from the Greek φῶς, phōs, "light", and σύνθεσις, synthesis, "putting together". In most cases, oxygen is also released as a waste product. Most plants, most algae, and cyanobacteria perform photosynthesis; such organisms are called photoautotrophs. Photosynthesis is largely responsible for producing and maintaining the oxygen content of the Earth's atmosphere, and supplies all of the organic compounds and most of the energy necessary for life on Earth.

Technique for extracting active component of Enteromorpha prolifera and method for preparing Enteromorpha prolifera seaweed fertilizer

The invention provides effective technology for extracting active ingredients of Entermorpha and a method for preparing an Entermorpha alga fertilizer. The method is characterized by comprising: taking the Entermorpha as a raw material, effectively extracting the active ingredients of the Entermorpha through technical processes such as pretreatment of raw materials, leaching, neutralization, concentration and combination, taking an extracting solution as a base fluid, combining the extracting solution with at least one composition of humic acid, urea, potassium dihydrogen phosphate, potassiumsulfate, monoammonium phosphate and microelement, and preparing the high-activity Entermorpha alga fertilizer. The Entermorpha alga fertilizer is rich in active substances of algae, not only can strengthen photosynthesis of crops, increase the yield of the crops and improve the product quality but also can strengthen the cold resistance, the drought resistance, the stress resistance and the disease resistance of the crops, promote earliness of the crops and increase the fertile flower percentage and the fertile fruit percentage, has lower production cost, good solubility and safe use, is friendly and harmless to human beings, domestic animals and the natural environment, and is a novel environment-friendly fertilizer suitable for modern agriculture.

Light control method for dendrobium officinale tissue culture

The invention relates to a light control method for dendrobium officinale tissue culture, which comprises the following steps of: obtaining powdery seeds after dendrobium officinale fruits are sterilized, culturing the powdery seeds through a seed germination culture medium, and germinating the cultured seeds to form protocorms. The method is characterized in that: in the tissue culture process of dendrobium officinale seedlings, a light emitting diode (LED) plant growth illumination system is used as a light source, and different illumination treatment is implemented according to different stages of dendrobium officinale tissue culture. The different illumination treatment is implemented according to different growth stages so that the dendrobium officinale seedlings can furthest utilize light energy for photosynthesis and the highest growth amount is obtained. Experimental results show that: the culture period of the dendrobium officinale seedlings can be effectively shortened according to the technical scheme, the time from the seeds to the rooted finished seedlings is only 150 to 180 days, the growth period is shortened by 30 to 60 days compared with the culture under a common fluorescent lamp, and the seedlings cultured by the method have stable hereditary character and good quality.

Atom dispersion water oxidation catalyst and preparation and application thereof

The invention relates to an atom dispersion water oxidation catalyst and a preparation method and application thereof. The method comprises the steps that firstly, metal ions and nonmetal atoms are embedded into a carbon-based material framework; and generated oxides are removed through acid treatment, so that the atom dispersion catalyst is obtained. By means of the method, the dispersive atom catalyst containing the metal ions such as vanadium, chromium, manganese, iron, cobalt, nickel, copper, ruthenium, palladium, silver, cadmium, iridium and lead can be prepared. The metal ions in a material synthesized through the method are mainly embedded into the framework of a carbon-based carrier in the form of single atoms, and the metal loading amount can reach 1.5% or above by weight. The catalytic performance of the atom dispersion catalytic material prepared through the method can compare favorably with that of PSII in the nature; the preparation cost is low; and the wide application prospect can be achieved in the processes of water decomposition conducted through electro-catalysis, water decomposition conducted through photoelectrocatalysis, water decomposition conducted through photo-catalysis and manual photosynthesis carbon dioxide reduction and conversion.

Chitosan oligosaccharide composite with cold-resistant function and application of composite

The invention discloses a chitosan oligosaccharide composite with cold-resistant function, which is aqueous solution, wherein the mass concentration of the chitosan oligosaccharide is 5%-10%, other auxiliary active constituents include at least one of phosphorus, potassium, calcium, boron, molybdenum, zinc, salicylic acid and betaine, and the content of the auxiliary active constituents is 0.5%-30% of the total mass concentration of the composite. Before the flowering period and the young fruit period of fruit trees, the time of young seedling of melon and fruit, vegetables and flowers, and the cold sensitive period of the winter growth of greenhouse crops, the composite is diluted by 1000 times with water to be sprayed on the leaves of the plants for 2-3 times; the chitosan oligosaccharide composite used in the invention has the function of promoting photosynthesis of the crops, improving activation performance of various enzymes and promoting metabolism of carbohydrates; and the chitosan oligosaccharide composite is used for inducing the crops to improve stress resistance and inducing the crops to improve cold resistance, so that the crops can get through the low-temperature cold harmful period, and regular development and yield of the crops are ensured.

Methods for culturing haematococcus pluvialis and producing astaxanthin

The invention provides a haematococcus pluvialis culture production method and a method for further producing astaxanthin. The haematococcus pluvialis culture process is carried out in a large-size container, and haematococcus pluvialis is cultured under the irradiation of an artificial LED (light-emitting diode) light source; the artificial LED light source is provided by a high-brightness LED, the wavelength range of single-color light emitted by the LED light source is from 450nm (width band of 30nm) to 640nm (width band of 30nm); the used illumination intensity is 30mu E/m<2>.s-3000mu E/m<2>.s; in the culture process, cells are maintained to be suspended in the culture liquid in utilizing a ventilation mode, and temperature is maintained to be 15-28 DEG C; and the pH value is maintained to be 6.8-8.5. According to the invention, on one hand, more nutrient substances are accumulated so as to accelerate growth and reproduction; on the other hand, the problem that the temperature is difficult to control due to the adoption of a natural sun light source is solved, thereby saving a large amount of energy consumed for controlling the temperature in summer and winter, reducing production cost and environmental pollution; and simultaneously, according to the characteristic that photosynthesis pigments demand different light qualities, the most effective single-color diode light source is adopted, thereby improving energy utilization rate, production efficiency and cell concentration.
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