48 results about "Calotropis gigantea" patented technology

The invention relates to an artificial domestication, planting and cultivation method of wild calotropis gigantean, which comprises the following steps: (1) introducing varieties from different regions; (2) selecting the varieties, culturing seedlings and selecting the seedlings; (3) preparing a planting place and transplanting; (4) managing and protecting; and (5) harvesting and selecting powder-like fruits which have old green fruit outer skins and in non-white color, wherein the calotropis gigantean has the same period for flowers and fruits, the flower and fruit period is 9-11 months, and the calotropis gigantean can be harvested 4-6 times each year. The artificial domestication, planting and cultivation method is mainly used for solving the technical problem of large-scale planting of wild calotropis gigantean plants, and can lead the length of fruit fiber of the calotropis gigantean to reach 30-37mm, become textile fiber raw material which can partially replace cotton fiber and have lower planting cost.

The invention discloses calotropis gigantean bacteriostatic shaping cotton, which comprises the following components in percentage by weight: 60 to 100 percent of calotropis gigantean fibers and 0 to 40 percent of low-melting point fibers or 40 to 50 percent of calotropis gigantean fibers, 10 to 20 percent of cotton fibers and 30 to 40 percent of silk fibers or wool fibers. The calotropis gigantean bacteriostatic shaping cotton is prepared by the following processes of: finishing the calotropis gigantean fibers; performing cotton blending, air laying and heat shaping; and cutting and forming. The calotropis gigantean bacteriostatic shaping cotton keeps warm, is light and soft, has the effects of bacteriostasis and desinsectization, and is favorable for environmental friendliness and the physical and psychological health of consumers.

The invention discloses a method for air layering propagation of calotropis gigantea. The method is characterized by comprising the steps of branch selection, substrate preparation and processing, air layering, layering post-management and in-vitro transplanting; upright or inclined robust branches with the diameter being 0.5-1.5 cm are selected on seed trees of the calotropis gigantea, girdling is performed, a prepared substrate A is bound on a girdling opening, layering post-management is performed, and finally in-vitro transplanting culture is performed to obtain high-quality calotropis gigantea calotropis gigantea seedlings. According to the method, layering rooting is rapid, the rooting rate is 100%, the transplanting survival rate reaches up to 92% or above, seedlings are robust and high in quality, and calotropis gigantea seedlings with the good-character female parent can be reserved within a short period of time; meanwhile, seed transplanted seedlings flower and fruit before seed seedlings, high-quality, efficient, large-scale and rapid development of calotropis gigantea can be promoted, and good economic, social and ecological benefits are achieved.

A related method for improving calotropis gigantea fiber elastic modulus comprises performing washing pretreatment on calotropis gigantea fiber; dipping the pretreated calotropis gigantea fiber into a processing agent solution; and taking out calotropis gigantea fiber dipped in the processing agent solution, centrifuging and drying. The method is simple to operate, the processed calotropis gigantea fiber is increased in both breaking elongation and elastic modulus, and the method possesses certain meaning for alleviating the situation that cotton and other natural fiber resource is limited and exploiting a new ecological environment-friendly fiber material.

The invention discloses a container nursery method for calotropis gigantea. The container nursery method for calotropis gigantea is characterized by comprising the following steps: seed collection, nutritional bag selection, substrate preparation, seed treatment and sowing, cultivation and management and outplanting. Mature calotropis gigantea seeds are collected, and are soaked and sterilized, then germination is accelerated, after sprouting, the seeds are sown in non-woven fabric nursery bags with the substrate in a spot seeding manner, and qualified calotropis gigantea nursery stocks are obtained by seedling management. The survival rate of the cultivated calotropis gigantea nursery stocks is high and is 90% or above, a root system is developed, the calotropis gigantea grows fast in the later period, the calotropis gigantea with raw soil mass is planted during afforestation, roots are not damaged, the survival rate and the growth amount of the calotropis gigantea during afforestation can be greatly improved, a brand-new cultivation system is established for the calotropis gigantea, and the economic benefit, the social benefit and the ecological benefit are good.

The invention discloses a method of calotropis gigantea L. mycorrhization container seedling breeding. The method comprises the following processes: treating seeds, preparing a substrate, carrying outmatrix inoculation, sowing the seeds, carrying out management in a seedling stage and taking seedlings out of a nursery. Qualified seeds are selected for disinfection treatment; then carrying out germination acceleration; after white is exposed on the seeds, the seeds are sowed into the pre-prepared matrix inoculated with a strain; and high-quality calotropis gigantea L. container seedlings are obtained through management and nursing in the seedling stage. According to the method provided by the invention, in order to solve the characteristics of slow growth, less developed root system, and easy infection of root rot and stem rot of the calotropis gigantea L. in a young seedling stage, the effects of root enrichment, growth promotion, seedling strengthening, and disease prevention of mycorrhiza are fully utilized, the quality of the calotropis gigantea L. seedlings is improved, the resistance of the seedlings is enhanced, the survival rate of the seedlings is improved and reaches 90%or above, the mycorrhiza has the capacity of self-fertilization, and the supplement of external fertilizers can be reduced in the seedling stage, so that the seedling breeding cost is reduced.

The invention discloses a novel application of mudar and the extract thereof in the preparation of antitumor drugs, belonging to the field of Chinese medicines and natural medicines. Mudar is extracted by ethanol and then by petroleum ether, after being filtered, the left water liquid is put on macroporous absorption resin (D101) column chromatograph, water and methanol are sucessively used for eluting, and methanol eluent is collected and concentrated so as to obtain the methanol part; proved by tests, the methanol part obtained by extracting has the function of resisting tumor cells.

The invention provides a preparation method of multifunctional health-care fancy yarn with antibacterial and skin-care functions. The yarn is composed of two pieces of core yarn, one piece of decorative yarn and two pieces of fixed yarn, wherein the core yarn is blended yarn formed by blending and processing calotropis gigantea fibers, mulberry bark fibers, Amicor antibacterial fibers and copper fibers, the fixed yarn is composed of far-infrared polyester filaments and tourmaline fiber filaments, and the decorative yarn is blended rough yarn formed by blending and processing tea leaf fibers, banana stem fibers, antibacterial odor-resistant acrylic fibers and rabbit hair fibers; or the core yarn is blended yarn formed by blending and processing sarcandra glabra fibers, luminous fibers, pineapple leaf fibers and silver fibers, the fixed yarn is negative ion polypropylene filaments, and the decorative yarn is blended rough yarn formed by blending and processing lotus fibers, anti-ultraviolet polyester fibers, double-resistant acrylic fibers, yak wool fibers and alpaca fibers. The yarn developed through the method does not generate adverse effects when making contact with the human body, products are not easy to damage by worms or rot, and the yarn is mainly used for various textiles such as yarn-dyed cotton suiting for women, roved and spun fabrics, decorative articles, hand knitted products and shawls.

The invention discloses a continuous calotropis gigantea fiber extraction device and a use method thereof. The continuous calotropis gigantea fiber extraction device comprises a fan, a microwave generator, a feeding hopper, a microwave box, a sound control sensor, a fiber collection pipeline, a compound fiber collection box, a waste conveying belt, a collection box, a vacuum pump and a control system, the feeding hopper is arranged at the top of the microwave box, a support is arranged at the bottom of the microwave box, the fan is arranged on the side of the microwave box and communicated with the microwave box, a conveying device is arranged in the microwave box, a discharge hopper is arranged at the bottom of the microwave box, the waste conveying belt is horizontally arranged below thedischarge hopper, the connection box is positioned below the discharging end of the waste conveying belt, the microwave generator and the sound control sensor are arranged in the microwave box, and the compound fiber collection box is connected with the air exhaust end of the vacuum pump. The device solves the problems of difficult and impure extraction of calotropis gigantea fibers and the like.According to the device, extraction efficiency and extraction quality are improved, the problems of difficulty in separation and low extraction purity of pouch seed fibers are solved, and the extraction cost can be reduced.

The invention discloses a tampon with the functions of promoting blood circulation and regulating menstruation and a preparation method thereof. According to the tampon, with calotropis gigantea fibers and cotton fibers as main materials, the calotropis gigantea fibers are pretreated, so that the tampon is soft and comfortable, and the skin-friendly property is improved. Drug extracts are added inthe tampon and a non-woven fabric, and the tampon is endowed with the effects of promoting the blood circulation and regulating the menstruation. The prepared tampon has the effects of promoting theblood circulation, regulating the menstruation and eliminating inflammation, and can prevent and treat gynecological diseases.

The invention discloses preparation of a calotropis gigantea leaf extract and application of an antineoplastic medicament. The preparation of the calotropis gigantea leaf extract is characterized by comprising the following steps of: using calotropis gigantea leaves as a raw material; extracting and concentrating the raw material to obtain the calotropis gigantea leaf extract comprising cardiac glycoside active constituents; and according to the conventional preparation process, preparing the extract into tablets, capsules, granules, dripping pills, oral liquid or injections applied in the antineoplastic medicament. Compared with the prior art, the preparation has the advantages of convenient extraction of an antineoplastic active substance, simple operation, low cost and significant antineoplastic curative effect, and provides a new medicament for treating tumors.

The invention discloses mildew-resistant mothproof aramid short fiber composite raw paper. Antibacterial agents prepared into a mixed antibacterial slurry, the mixed antibacterial slurry is added in raw materials, and a lasting antibacterial property, environmental protection and no pollution to the environment are achieved when the composite raw paper is compared with paper prepared through traditional methods of spraying, gluing, coating, dipping and the like. Aramid short fibers and calotropis gigantea fibers are modified, spinning is carried out again, novel composite fibers are prepared, the novel composite fibers are added in the raw materials, mutual combination is achieved, and the toughness and the intensity of paper are raised obviously. isooctyl triethoxysilane and other effective auxiliary agents are added, Si-C bonds and hydroxyls in cellulose can form chemical bonds, and therefore special surface properties are given to the fiber. the prepared composite raw material has sterilization, peculiar smell removing and harmful chemical substance decomposition functions, has a lasting and effective wide spectrum antibacterial effect on escherichia coli and staphylococcus aureus, and has advantages of environmental protection, self-cleaning, mildew resistance, moth resistance, no pollution to the environment, simple and practical preparation method and low cost.

The invention discloses whitening and moisturizing lotion suitable for oily skin and a preparation method therefor. The whitening and moisturizing lotion comprises the components: stearic acid, glycerol, titanium dioxide, anhydrous sodium carbonate, sodium hyaluronate and the like. A small amount of titanium dioxide powder is added to the whitening and moisturizing lotion, and thus, ultraviolet rays can be resisted by physical sun screening, and the ultraviolet rays are scattered to reduce the harm of the ultraviolet rays; meanwhile, a plant extract of the lotion includes an extract B, and theextract B is obtained by ultrasonic alcohol extraction of strawberries and calotropis gigantea leaves. The composition ratio of the lotion is appropriate; the prepared lotion has excellent propertiesof whitening, oil control and moisturizing, can effectively maintain the balance of water and oil of the skin to keep the skin fresh and moisturized, and effectively absorbs surface oil of the skin to achieve long-term oil control; and the lotion further has excellent anti-aging and anti-inflammatory effects, can guarantee the vitality of the skin, avoids inflammations and acnes, and has higher practicality.

The invention relates to the technical field of calotropis gigantea fabric flexible sensors and particularly relates to a stretchable calotropis gigantea fiber graphene flexible sensor. The stretchable calotropis gigantea fiber graphene flexible sensor comprises a stretchable flexible sensor body, electrodes and a lead, wherein the stretchable flexible sensor body is a conductive flexible calotropis gigantea fabric layer, and the conductive flexible calotropis gigantea fabric layer is formed by weaving conductive calotropis gigantea yarns; the conductive calotropis gigantea yarns are prepared from conductive calotropis gigantea fibers; the stretchable flexible sensor body is connected with an electrode; and the electrode is connected with a lead. The calotropis gigantean yarns are coated by a padding method, the calotropis gigantean yarns obtain uniform and excellent conductive performance through process regulation and control, and then the calotropis gigantean yarns are woven by a textile technology to obtain the stretchable calotropis gigantean fiber graphene flexible sensor with an antibacterial function and durability.

The invention discloses a bouquet blueberry-containing steamed cake. The bouquet blueberry-containing steamed cake is made by using the following raw materials, by weight, 40-50 parts of sorghum, 30-40 parts of wheat flour, 20-25 parts of blueberry, 1-2 parts of Dianthus superbus, 1-2 parts of Weeping Forsythia, 1-2 parts of Calotropis gigantea, 7-10 parts of chicken gizzard, 1-2 parts of Illicium verum, 3-4 parts of cooking wine, 1-2 parts of salt, 1-2 parts of chive, 5-6 parts of wolfberry leaf, 6-8 parts of white granulated sugar, 5-6 parts of alfalfa sprout, 1-2 parts of garlic, 1-2 parts of yeast, 10-12 parts of apple brandy, 4-5 parts of rice wine, 1-2 parts of an assistant and a proper amount of water. The bouquet blueberry-containing steamed cake adopts sorghum and the wheat flour as primary raw materials, and the addition of blueberry, the apple brandy and the rice wine makes the steamed cake have the bouquet richness and the delicate fruit fragrance, so when people eat the steamed cake, the mouths are full of the fragrance of the steamed cake, and the aftertaste of the steamed cake is long. The steamed cake made in the invention has the advantages of high nutrition value, and mellow and rich mouthfeel, and can nourish face, treat beauty, delay ageing, reduce cholesterol and protect eyes after long-term appropriate drinking. The added wolfberry leaf has the health efficacies of liver nourishing, eyesight improving, blood vessel softening and the like. The rice wine has skin beautifying, memory enhancing and digestion promoting effects.

The invention discloses an impurity removing device special for separating calotropis gigantean fiber capsule seeds. The impurity removing device comprises a feeding device, a transmission system and a cotton conveying pipe, and is characterized in that the feeding device consists of a cotton feeding plate, a cotton feeding roller, a dust rod and four-wing beaters, and is mounted at the upper part of the front end of a rack; the transmission system is fixed at the lower part of the front end of the rack; a cotton conveying pipeline is arranged at the middle part of the rack; two adjusting plates in an upper and lower manner and a negative pressure air pipe are arranged inside the pipeline; a capsule seed dust chamber is arranged at the lower part of the pipeline; and a cotton storage box and a negative pressure fan are arranged at the rear part of the rack. According to the impurity removing device, elastic metal sheets are adopted as the beaters; a plurality of beaters are adopted and operated in low speed, so that the fiber is less damaged, the whole set of device structure is small in physical beating effect, impurities are removed with the combination of airflow, and the unique characteristics of the fibers are better maintained; compared with manual sorting, the separation effect is increased by 26 times, so that the industrial batch production of the calotropis gigantean fiber is facilitated; and the dirt percentage is reduced to 3%, so that the impurities in the fibers is effectively removed.

The invention discloses a modification treatment process for Calotropis gigantea fibers. According to the process, physical and chemical methods are adopted, after a suitable formula treatment agent and process are selected for conducting batch treatment on Calotropis gigantea fibers, the weight and surface friction coefficient of the fibers can be increased, the antistatic properties and mechanical properties of the fibers can be improved, and therefore in the spinning process of the Calotropis gigantea fibers, the effects of fully conducting mixing and combing, uniformly forming a net, reducing broken ends, improving the yarn hairiness and yarn evenness and increasing the yarn strength are achieved. Meanwhile, in the spinning process, the flying matter and dust can be reduced, and therefore the spinning workshop environment is improved. By implementing the process, the effect of improving the grade and quality of Calotropis gigantea yarn and fabric thereof can be achieved, and finally a foundation is laid for the industrialization of the Calotropis gigantea fiber yarn and fabric thereof.

The invention discloses a preparation method of the multifunctional calotropis gigantean fiber blended yarn. The preparation method comprises the following steps of S1, preparing the calotropis gigantean fiber blended yarn; S2, performing low-temperature plasma treatment on the calotropis gigantean fiber blended yarn through air or oxygen or nitrogen, placing the blended yarn in deionized water tobe cleaned and then performing plasma treatment; and S3, placing the plasma modified calotropis gigantean fiber blended yarn in a fibroin nano-silver chitosan microsphere solution to finally obtain afinished product. The preparation method disclosed by the invention is simple in process operation, low in price of the raw material, and capable of saving the textile cost, the blended yarn has theadvantages of soft hand feeling, air permeability, hygroscopicity, heat retention property, antibacterial property and the like, and the problem that the fiber is easy to break and fly and difficult in silvering since the calotropis gigantean fiber in spinning is low in breaking strength and large in rigidity, the cohesive force between the fibers is absent, and friction force is small is solved.

The invention discloses a preparation process of a multifunctional calotropis gigantea fiber blended fabric. The preparation process comprises the following steps: S1, preparing a calotropis giganteafiber blended fabric; S2, performing low-temperature plasma treatment; and S3, finishing the antibacterial function of the calotropis gigantea fiber blended fabric. In the preparation process, the calotropis gigantea fiber blended fabric is simple in process operation, has excellent thermal insulation property, moisture absorption property and wrinkle resistance, long-acting antibacterial propertyand good hand feeling, and retains crystal-like luster, soft hand feeling, air permeability, moisture absorption property, heat retention property and other advantages of calotropis gigantea fibers,so that the discharge of printing and dyeing wastewater is reduced.

The invention discloses a polysulfone / natural fiber composite oil absorbing material, which is prepared by immersing natural fiber in a polysulfone solution for 1 to 60min, separating, replacing withwater as a solvent, washing with water and ethanol in turn, and drying. The natural fiber is Calotropis gigantea fiber or / and kapok fiber. The polysulfone / natural fiber composite oil absorbing material prepared by combination of the advantages of polysulfone and the Calotropis gigantea fibe has good oil absorption capacity, fast absorption rate, high efficiency, and excellent mechanical properties, can be used in oil recovery and recycling use through simple squeezing, is a green environment-friendly oil absorbing material, and can be widely used in marine oil spill accident treatment, oil-water separation and oil-containing industrial wastewater treatment and the like.

The invention relates to a rapid propagation and cultivation method for tissue culture seedlings of calotropis gigantea, white-flower calotropis gigantea and large calotropis gigantea. The method comprises the following steps: (1) selecting an explant of the calotropis gigantea; (2) preparing culture mediums; (3) sterilizing the explant materials of the calotropis gigantea; (4) performing bacteria-free inoculation; (5) culturing the culture mediums; (6) exercising, domesticating and transplanting seedlings. The method disclosed by the invention mainly solves the technical problems that in the scale cultivation of the wild calotropis gigantea, the time that seeds grow into seedlings is longer, the number of cultured seedlings is limited, and the requirement of planting seedlings in a large scale manually is difficult to meet. The calotropis gigantea plant tissue culture or in-vitro culture is adopted, all parts of tissue or organs, cells, protoplasts, cambiums, parenchyma, mesophyll tissue, endosperm and the like, which can meet demands, are separated from the plant bodies of the calotropis gigantea, through bacteria-free operation, the callus tissue produced on each organ is cultured, and through the redifferentiation of the callus tissue, calotropis gigantea regenerating plants are formed.

The invention relates to a method for crossbreeding Calotropis R. Br. The method comprises the following steps: (1) selecting a female parent, wherein the length of a fiber main body is over 30mm, the outer diameter of fruits is not smaller than 8cm, and the number of fruits on a single plant is not less than 10; (2) selecting a male parent, wherein the length of a fiber main body is not shorter than 29mm, the outer diameter of fruits is more than 10cm, and the number of fruits on a single plant is not less than 10; (3) collecting pollen; (4) hybridizing; (5) stratifying hybridized seeds; (6) sowing; (7) screening to obtain a hybrid generation F1, and analyzing an exogenous gene homozygous plant by using amplification results, and verifying in F2. The process for selecting advantageous female and male parent materials is carried out multiple times to obtain hybridized or backcrossed hybrid seedling homozygous plants with excellent properties generation to generation from F1-F8 for planting. The method fills in the blank in crossbreeding cultivation techniques of Calotropis R. Br. The first purpose of the method is to prepare Calotropis R. Br seed fibers (the length of Calotropis R. Br fibers is more than 30mm) serving as a novel Calotropis R. Br fiber textile raw material and the second purpose of the method is to obtain stem leaves of Calotropis R. Br as novel Calotropis R. Br biomedicine and biological energy raw materials.

A method of extracting total cardiac glycoside from Calotropis gigantea comprises the steps of (1) crushing dried leaves of Calotropis gigantea, screening with a 10- to 40-mesh sieve, and placing the filtered powder in an ultrasonic extractor; (2) using an alcohol solution having a concentration of 20% to 100% as a solvent, and mixing the alcohol solution with the powder in the ratio of 20:1 to 80:1 (ml:g); (3) extracting with the ultrasonic extractor set under extraction powder of 280-700 w at 30-50 DEG C for 10-60 min once to four times to obtain the finished product. The method of the invention has the advantages of short extraction time, low solvent usage and high efficiency.

Methods of using extracts of Calotropis gigantea to impart benefits to skin and / or improve skin conditions resulting from aging or damaged skin.

The invention relates to the field of agricultural production storage, in particular to a repellant for lasioderma serricorne and a preparation method thereof. Tephrosia vogelli and borneol are used as main raw materials, calotropis gigantea leaf, aloe, living stephanotis, lemon essential oil, eucalyptus essential oil and salvia essential oil are used as auxiliary raw materials, repelling and killing effect of tephrosia vogelli on lasioderma serricorne is brought into full play, volatile insect-repelling ingredients in borneol are combined with insect-repelling effect of aloe and living stephanotis, the lemon essential oil, the eucalyptus essential oil and the salvia essential oil are used for blending, insect repelling and killing properties of the lemon essential oil and the eucalyptus essential oil are brought into full play, smell of all raw materials is excited fully through the salvia essential oil, and insect repelling effect of all raw materials on lasioderma serricorne is amplified to realize effect of fully repelling lasioderma serricorne. The repellent is prepared from pure natural raw materials, thereby being little in toxic and side effect and basically harmless to human body, and is low in toxicity, good in repelling effect and basically harmless to the human body.

The invention discloses a green pesticide for controlling acarids. The green pesticide comprises, by weight, 0.01-0.03 parts of monilia powder, 0.01-0.03 parts of metarhizium powder, 10-15 parts of Calotropis gigantea, 5-9 parts of Rhododendron molle, 5-9 parts of Macleaya cordata, 7-10 parts of tobacco stem, 10-15 parts of Stahlianthus involucratus (King) Craib, 2-6 parts of Cortex Meliae, 10-20 parts of bur clover, 8-10 parts of Nux Vomica, 8-10 parts of tea seed meal, 2-9 parts of Anemone vitifolia Buch.-Ham., 2-9 parts of Dalbergia hupeana and 1-10 parts of a synergist. The green pesticide simultaneously has the characteristics of a biological pesticide and a botanical insecticide; the addition of the synergist realizes a geometrical progression relationship between the drug effect and components; and experiment data show that the drug effect of the green pesticide is 10-20 times that of single components, and has low toxicity to humans and fowls.

The invention discloses a container seedling raising method by utilizing cuttage reproduction of calotropis gigantea branches. The method comprises the following working procedures including selectionof a container, preparation of a matrix, loading in cups, selection and treatment of the branches, cuttage, and management after cottage; and the calotropis gigantea branches are inserted into the nutrient cups in a nursery, management after the cuttage is performed, and therefore excellent-quality calotropis gigantea seedlings are finally obtained. The method provided by the invention has the advantages of being simple and easy to implement, having high efficiency, low costs, a quick reproduction speed, and a high propagation coefficient and the like, and the characteristics of being capableof keeping excellent traits of a female parent, and after afforestation, the blossoming and fruiting of the calotropis gigantean cultivated by the container seedling raising method are earlier than those of calotropis gigantean cultivated by a seed seedling raising method; and the cuttage is not limited by time and seasons, so that the method is beneficial for the high-efficiency performance andcontinuity of the reproduction, can be applied directly to actual production, and has better economic, social and ecological benefits.

The invention relates to the technical field of filter paper, and discloses flat-layer filter paper and a method for preparing the same. The flat-layer filter paper comprises an upper filter layer, a lower filter layer and composite coatings. The composite coatings are respectively arranged on the upper surface of the upper filter layer and the lower surface of the lower filter layer; composite pulp comprises titanium dioxide aerogel particles, phenoxy resin, dimethylformamide and water; the upper filter layer is made of mercerized fibers, sisal fibers, calotropis gigantea fibers, wet strength agents, ethylene glycol diglycidyl ether, dispersing agents and water; the lower filter layer is made of broadleaf wood fibers, titanium dioxide aerogel particles, beta-cyclodextrin, carboxymethyl celluloses, ethylene glycol diglycidyl ether and water. The flat-layer filter paper and the method have the advantages that composite coatings which are good in gas permeability and water resistance are arranged on the filter layers of the flat-layer filter paper, and accordingly the water resistance, the weather resistance, the dry tensile strength and the wet tensile strength of the filter paper can be improved on the premise that the gas permeability and the filter efficiency of the paper are guaranteed.

A calotropis gigantea seedling tissue culture rapid propagation method with the terminal bud as a starting material relates to a plant vegetative propagation method. The method includes the cultivation steps of terminal bud elongation, auxiliary bud rapid proliferation, tissue culture rooting transplanting and the like. The auxiliary bud rapid proliferation refers to conducting subculture transplanting on proliferation seedlings and repeating the process to achieve the rapid proliferation. The method is stable in growth coefficient and inheritable character, omits the strong seedling culture stage and the natural light seedling hardening stage after the rooting stage, is simple in operation, low in production cost and capable of meeting the requirement of calotropis gigantea good single plants for industrial production.

The invention discloses a silane-modified croissant fiber oil-absorbing material, which is obtained by soaking croissant fiber in a silane modifier solution, separating, cleaning, vacuum drying, and heat-treating at 100-200 DEG C. The oil-absorbing material has 65-90 times the absorption capacity of soybean oil and engine oil; the oil-absorbing equilibrium time is about 10 minutes, it has fast and efficient oil-absorbing capacity, and can quickly prevent oil from spreading. In addition, the present invention has cheap and easy-to-obtain raw materials, low product cost, simple preparation process, and biodegradable performance.