78 results about "Lonicera korolkowii" patented technology

The invention discloses a plaster which can activate blood circulation to dissipate blood stasis and dispel wind and remove obstruction in the meridians. The plaster is prepared according to a certain weight proportion by a plurality of Chinese medicines such as angelica, rhizoma ligustici wallichii, red sage root, semen persicae, safflower, eupatorium, rhizoma sparganii, zedoary root, leeches, chinese polyphaga, brazilwood, magnolia officinalis, asafetida, frankincense, myrrh, caulis spatholobi, polygonum cuspidatum, resina draconis, radices pseudoginseng, white mustard seed, pangolin, radices gentianae macrophyllae, radix clematidis, aristolochiae mollissimae, long-noded pit viper, wu chia pee, rhizoma homalomenae, herba siegesbeckiae, futokadsura stem, paniculate swallowwort root, yam, rhizoma dioscoreae hypoglaueae, rhizoma et radix notopterygii, chinese ephedra, radix sileris, szechuan aconite, cassia stem, centipedes, earthworms, cortex cercis, scorpion, seed of nuxvomica poison nut, tree peony bark, radix paeoniae rubra, gardenia, phellodendron, radix scutellariae, radix sophorae flavescentis, rhizoma atractylodis, honeysuckle, forsythia, radix semiaquilegiae, fourstamen stephania root, antler, radices morindae, cortex eucommiae, Himalayan teasel root, rhizoma cibotii, fructus broussonetiae, herba taxilli, camphor and musk, etc. The plaster of the invention has the functions of activating of blood circulation to dissipate blood stasis, expelling wind and freeing channel, detumescence by detoxification, eliminating pathogenic heat from the blood, nourishing liver and kidneys and strengthening bones and tendons, etc., and has fast treatment effects and high recovery rate on treating diseases such as arthritis, cervical spondylosis, periarthritis of the shoulder, closed fracture and facial paralysis, etc.

The invention discloses a deer-horn gelatin health product for conditioning eight types of abnormal body constitution. The deer-horn gelatin health product comprises the following raw materials in parts by mass: 1-10 parts of deer-horn gelatin powder, 1-10 parts of panax ginseng, 1-10 parts of cordyceps militaris, 0.1-4 parts of tissue culture of saussurea involucrate, 1-6 parts of polygonatum sibiricum and 1-4 parts of radix polygonati officinalis, into which the following materials can be added: sanguis cervi, deer bone meal, lepidium meyenii walp, moringa oleifera leaves, earthworm protein, noni berry smoothie, Chinese wolfberries, fructus mori, phyllanthus emblica, dunaliella salina, white hyacinth beans, arillus longan, semen cassiae torae, lilium brownie, semen euryales, hippophae rhamnoides, alpinia oxyphylla, fructus jujubae, herba elsholtziae, semen ziziphi spinosae, poria cocos, fructus citri sarcodactylis, citrus medica, exocarpium citri rubrum, peach kernels, tortoise, coix seeds, lonicera japonica, licorice, semen ginkgo, Chinese yam, carica papaya, myristica fragrans, pollen pini, rosa roxburghii, eucommia staminate flower, flos rosae rugosae, euryale ferox, linderae aggregate leaves, honey, krill oil, sacha inchi oil, wheat oligopeptides, yeast beta-glucosan, milk minerals, tomato seed oil and eucommia seed oil. The deer-horn gelatin health product provided by the invention has a good curative effect for people with qi-blood deficiency and viscera function failures and for low-immunity sub-healthy groups with all kinds of deficiency syndromes.

The invention discloses a washing composition as well as a preparation method and application of the washing composition. The washing composition is prepared by taking water, alkyl polyglucoside, propylene glycol, alkyl betaine, sodium lauryl sulfate, flos lonicerae extract, chrysanthemum extract, radix sophorae flavescentis extract, mint extract, table vinegar (edible acetic acid), table salt, edible essence and a thickening agent as raw materials, and has the functions and characteristics of sterilization and disinfection, oil removal and stain removal, itching stopping and skin protection, odor removal and deodorization, low foam, and capability of being cleaned by washing; meanwhile, alcohol, an alkali, a preservative and other disinfection components are not added, so that a functional skin-protection daily chemical washing product, which can be used for naturally killing viruses and sterilizing, removing oil and dirt, stopping itching and dandruff, resisting allergy and protection skins, and has a medicine effect, is obtained.

The invention relates to a method for establishing a fingerprint of a flos lonicerae medicinal preparation. The method comprises the following steps of by taking flos lonicerae formula granules as detection objects, establishing a method for a fingerprint of a medicinal preparation, and obtaining more comprehensive fingerprint information; determining common characteristic peaks: first peak neochlorogenic acid, second peak chlorogenic acid, third peak cryptochlorogenic acid, fourth peak rutin, fifth peak galuteolin, sixth peak, seventh peak isochlorogenic acid A and eighth peak isochlorogenic acid C; selecting the second peak chlorogenic acid as an inner reference peak, and determining relative retention time of the common characteristic peaks of the flos lonicerae formula granules. In addition, by combining information of multiple chromatographic peaks in the fingerprint, the quality of the flos lonicerae formula granules can be detected comprehensively and quickly, and comprehensive quality detection and integral quality control of the flos lonicerae formula granules are facilitated, thereby benefiting the improvement on the safety and the stability of medicine use. Meanwhile, the method has the advantages of high stability, high precision, good repeatability and the like.

The invention relates to a nutritional cultivation matrix for household potted plants. The nutritional cultivation matrix is characterized by comprising the following components by weight: 35-45 parts of loess, 4-6 parts of vermiculite powder, 4-6 parts of tourmaline balls, 8-12 parts of sea mud, 4-6 parts of brassinolide, 4-6 parts of a glutamic acid mother solution, 8-12 parts of plant ash, 4-6 parts of sepiolite powder, 4-6 parts of saw dust, 2-4 parts of elm tree leaves, 2-4 parts of folium cannabis, 4-6 parts of grape seed, 4-6 parts of hempseeds, 2-4 parts of cottonseeds, 2-4 parts of seaweed meal, 2-4 parts of egg shell, 4-6 parts of yellow sand, 4-6 parts of straw powder, 2-4 parts of moss, 4-6 parts of straw particles, 2-4 parts of activated carbon fibre, 2-4 parts of protein powder, 4-6 parts of common cnidium fruit, 1-3 parts of clove, 1-3 parts of akebia stem, 2-4 parts of nutmeg, 1-3 parts of sweet osmanthus, 1-3 parts of wild grape root, 1-3 parts of asarum herb, 2-4 parts of Buddleja davidii, 1-3 parts of Conyza bonariensis, and 2-4 parts of honeysuckle. The fertilizer prepared by the invention has comprehensive nutrients, not only contains 16 nutrient elements necessary for crop growth, but also contains elements beneficial to crop growth, and can comprehensively promote the growth of flowers.

The invention relates to a medicine for clearing heat, removing toxicity and reducing fever, which is prepared from the following raw material medicines by weight: 1.5 parts of radix bupleuri, 6.5 parts of gypsum, 2.5 parts of polygonum japonicum, 1.5 parts of rhizoma anemarrhenae, 1.25 parts of radix glycyrrhiza, 3 parts of flos lonicerae and 4 parts of abrotani herba. The medicine for clearing heat, removing toxicity and reducing fever is determined based on analyzing the formula constitution and combining various medicines, the medicinal flavor, efficacy, pharmacologic action and effective parts in the therapeutic process. In the medicine provided by the invention, various raw material medicines are reasonably compatible, supplemented each other and synergistic in effect, thereby having the effects of having an antivirus effect, inhibiting pathogenic bacteria, clearing heat and removing toxicity, purifying blood and improving immunity. The medicine is utilized to treat fever and high fever, headache, running nose and abnormal sweating etc. caused by internal heat and exogenous diseases etc., mainly treat upper respiratory tract infection, virus flu and influenza and so on, and the medicine is suitable for adults and children. The medicine has the advantages of quickly bringing down a fever, being wide in crowds, free of side effects, convenient to take and cheap in price.

The invention discloses a moist wet tissue and a preparation method thereof. The moist wet tissue comprises a base material and a medicine liquid loaded on the base material, wherein the medicine liquid is prepared from 0.2-0.3 part of neroli, 0.1-0.2 part of flos lonicerae extract, 0.3-0.5 part of glycine betaine, 0.01-0.05 part of allantoin, 0.01-0.05 part of niacinamide, 0.1-1 part of glycerinum, 0.1-1 part of propanediol, 0.1-1 part of butanediol, 0.5-1.5 parts of cetyl alcohol lactate, 0.01-0.05 part of sterilization preservative and 100 parts of water. The moist wet tissue has the advantages that the moist effect is good, the odor is fresh and fragrant, and the use feeling is good.

The invention provides a bio-organic fertilizer specially used for alocasia macrorrhiza. The bio-organic fertilizer contains the following components in parts by weight: 8-12 parts of soybean cakes, 4-6 parts of leaf mold, 4-6 parts of turfy soil, 4-6 parts of sea mud, 4-6 parts of dried sheep manure, 4-6 parts of chilli leaf powder, 4-6 parts of brassinolide, 4-6 parts of bamboo fibers, 0.01-0.08 part of vitamin D, 2-4 parts of corn starch, 2-4 parts of potassium fertilizer, 4-5 parts of phosphorus fertilizer, 0.5-1 part of egg yolk, 2-4 parts of sepiolite powder, 4-6 parts of fly ash, 2-4 parts of calcium carbonate, 4-6 parts of sweet potato powder, 4-6 parts of straw powder, 2-4 parts of powder of Chinese prickly ash, 2-4 parts of potato skins, 2-4 parts of activated carbon powder, 2-4 parts of protein powder, 4-6 parts of camphor, 2-4 parts of areca nuts, 2-4 parts of Siberia cocklebur, 4-6 parts of garlic, 1-3 parts of belvedere fruit, 4-6 parts of fructus cnidii, 1-3 parts of clove, 1-3 parts of caulis akebiae, 1-3 parts of sweet osmanthus, 1-3 parts of wild grape roots, 1-3 parts of asarum, 2-4 parts of flos buddlejae, 1-3 parts of conyza bonariensis and 2-4 parts of honeysuckle. The prepared fertilizer has comprehensive nutrients, not only contains 16 nutritive elements essential to crop growth but also contains other elements beneficial to crop growth, and can achieve the effect of comprehensively promoting growth of flowers.

The invention discloses a cancer inhibition and flesh engendering medicine for treating burns, scalds, the internal and external ulcer and the cataract, and its preparation method, and relates to the medical field. The medicine is prepared from the following raw materials, by weight, 25-30 parts of dahurian angelica root, 15-30 parts of Lithospermum erythrorhizon, 15-25 parts of camphor, 10-15 parts of borneol, 25-40 parts of Radix Sanguisorbae, 10-35 parts of ocean nitrate, 12-30 parts of Cattail Pollen, 10-42 parts of Nodus Nelumbinis Rhizomatis, 10-45 parts of charred Chinese Arborvitae Twig, 10-40 parts of Crinis Carbonisatus, 12-45 parts of Copperleaf herb, 10-35 parts of Bletilla striata, 10-30 parts of Cogongrass rhizome, 10-30 parts of Yerbadetajo Herb, 10-40 parts of Agrimonia eupatoria, 10-40 parts of Japanese Thistle Herb, 10-40 parts of Herba Cirsii, 10-35 parts of Rubia cordifolia, 10-40 parts of Monochoria vaginalis Presl, 1-10 parts of Herba Taraxaci, 10-40 parts of Ottelia alismoides, 10-25 parts of Spora Lygodii, 1-30 parts of Herba Violae and 1-30 parts of honeysuckle flower. The medicine has the advantages of anti-inflammation, pain relieving, flesh engendering without scars, bleeding stopping, restoration, fire purging, detoxification, phlegm reduction and vein relaxing, can treat severe burns and scalds, the cataract and diabetes, and inhibit the esophagus cancer and the stomach cancer.

The invention discloses a composition of a yeast fermentation extract. The composition is prepared from the following raw materials in parts by weight: 5-6 parts of the yeast fermentation extract, 1.3-2.6 parts of hyaluronic acid, 15-25 parts of vaseline, 1.3-4.8 parts of carboxymethyl chitosan, 0.7-2.6 parts of arbutin, 0.1-0.2 part of a preservative synergist and 60-80 parts of deionized water. By utilizing a mixture of the taraxacum mongolicum, flos chrysanthemi indici, flos lonicerae, coptis chinensis and folium phyllostachys, a fermentation product contains a large amount of chlorogenic acid and total flavonoids in the whole herb, has an inhibition effect on staphylococcus aureus, hemolytic streptococcus, pneumococcus, corynebacterium diphtheriae and other bacteria and common pathogenic dermatophyte, can improve the immunity of the organism, and has oxidation resistance; and meanwhile, the composition can quickly remove subcutaneous free radicals, has a good anti-wrinkle effect, can relieve irritation and inflammatory injury, caused by superoxide free radicals, to skin tissues, obviously relieve acne symptoms, and accelerate repair of skin lesion parts and focuses.

The invention relates to a moisture-proof five-ingredient detoxication drink granules and a preparation method thereof. According to the moisture-proof five-ingredient detoxication drink granules, flos lonicerae, chrysanthemum indicum linn, dandelions, herba violae and radix semiaquilegiae are decocted to obtain a decoction concentrated solution A, a first auxiliary material is added into the decoction concentrated solution A and uniformly mixed through a colloid mill, spray drying is performed to obtain a spray drying material B, finally a second auxiliary material is added into the spray drying material B, stirring and mixing are performed, and dry granulation is performed, the moisture-proof five-ingredient detoxication drink granules are prepared, the first auxiliary material comprises copovidone S630, beta-cyclodextrin and maltodextrin, and the second auxiliary material comprises dextrin, lactose and soluble starch. The five-ingredient detoxication drink granules have good moisture resistance and good stability.

Efficient skin disinfection solution is prepared from the following raw materials in parts by weight: 6 to 8 parts of chitosan quaternary ammonium salt, 4 to 7 parts of povidone iodine, 6 to 12 parts of lonicera japonica, 5 to7 parts of lavender, 4 to 5 parts of sucrose palmitate, 2 to 4 parts of perfluorocarboxylic acid salt, 4 to 7 parts of surfactants, 2 to 4 parts of radix sophorae flavescentis, 3 to 5 parts of myosoton aquaticum, 3 to 4.5 parts of arisaema fargesii, 4 to 8 parts of myristic acid isopropyl ester, 3 to 5 parts of isopropyl alcohol, 10 to 14 parts of distilled water, and 4 to 8 parts of ethyl alcohol. The efficient skin disinfection solution has the beneficial effects that bacteria on the skin can be killed very well, no pungent smell exists and the comfortableness is relatively good.

The invention belongs to the field of environmental protection, and particularly relates to a natural composite plant treatment agent for domestic wastewater and a preparation method thereof. The natural composite plant treatment agent for the domestic wastewater takes wormwood, mulberry leaves, black tea, leaves of flos lonicerae and ginkgo leaves as the raw materials, curing liquid is obtained through a curing method, and the natural composite plant treatment agent is finally obtained by conducting secondary fermentation on the curing liquid. The treatment agent is prepared by adopting the purely natural materials as the raw materials, the sources of the raw materials are extensive, the production cost is low, other chemical additives do not exist, the function of a biological reinforcing agent can be achieved, the degradation of pollutants is obviously facilitated, secondary pollution to the environment does not exist, the treatment effect on the domestic wastewater is excellent, various indexes of the treated domestic wastewater can meet the first level (B) emission standard of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), and the natural composite plant treatment agent for the domestic wastewater has extensive promotion significance.

The invention discloses antibacterial gel for treating vulva dermatitis pruritus and belongs to the technical field of drugs for treating vulva dermatitis pruritus. The antibacterial gel comprises, byweight, 3-5 parts of fructus cnidii, 2-4 parts of radix sophorae flavescentis, 8-10 parts of folium artemisiae argyi, 6-9 parts of flos lonicerae, 4-6 parts of cordate houttuynia, 2-5 parts of radixstemonae, 2-6 parts of radix angelicae lateralis preparata, 1-4 parts of sanguisorba officinalis, 1-4 parts of common ducksmeat herb, 2-5 parts of radix clematidis, 1-4 parts of rhizome of Yunnan goldthread, 1-3 parts of radix angelicae tuhuo, 20-40 parts of castor oil and 2-4 parts of chlorhexidine acetate. The antibacterial gel has efficacy of clearing heat and dispelling wind, promoting blood circulation to remove blood stasis and removing itch and is good in antimicrobial itching for pruritus vulvae, remarkable in clinical efficacy, less prone to recurrence after healing and free of side effect.

The invention discloses a composition capable of improving eyesight and a preparation method thereof. The composition capable of improving eyesight comprises semen cassiae, flos chrysanthemi, wolfberry fruit, flos lonicerae, folium mori, herba taraxaci, radix polygonati officinalis, emblic leafflower fruit, mulberry fruit, blueberry fruit powder, lutein ester, vitamin C, vitamin E, beta-carotene,sodium citrate, sucralose and potassium sorbate. The composition capable of improving eyesight has the advantages of protecting the eyes from light damage, inhibiting lipid peroxidation in the eye lenses to improve the eye blood circulation, and preventing aging and various degenerative diseases caused by aging; the composition further has a liver nourishing and protecting effect, and can replenish qi and blood, eliminate fatigue and improve the blood circulation in the body to achieve the effects of improving eyesight and dredging collaterals.

The invention belongs to the technical field of fermented dark tea-Fuzhuan tea and a processing method thereof, and particularly relates to a production and processing method of Fuzhuan tea containingflos lonicerae. The production and processing method of Fuzhuan tea containing flos lonicerae comprises the following steps of (1) matching semi-finished products; (2) steaming and piling; (3) pressing and shaping; (4) eurotium cristatum fermenting and forming and drying; and (5) packaging finished products. The Fuzhuan tea obtained by the method is flourishing in eurotium cristatum, golden yellow and full in particles, strong in fungus fragrance and mellow and thick in taste, the fragrance of the Fuzhuan tea is increased by adding the flos lonicerae, and the Fuzhuan tea is slightly sweet; and moreover, the Fuzhuan tea containing flos lonicerae is high in relative content of amino acid, tea polyphenol, soluble sugar, water extract and caffeine.

The invention provides a medicine for treating cold. The medicine is characterized by being prepared from the following components in parts by weight: 20-35 parts of fructus forsythia, 15-30 parts ofrhizoma atractylodis, 10-18 parts of radix angelicae dahuricae, 18-32 parts of herba artemisiae annuae, 10-18 parts of flos lonicerae and 1-5 parts of folium artemisiae argyi.

The invention discloses an external lotion used for treating herpes caused by hand-foot- mouth disease. The external lotion used for treating herpes caused by hand-foot- mouth disease is mainly prepared from following medical ingredients: 30 to 50 parts of cavalerie mosla, 15 to 20 parts of radix sophorae flavescentis, 20 to 45 parts of cortex phellodendri, 15 to 28 parts of rhizoma smilacis glabrae, 28 to 55 parts of lonicera japonica, 15 to 30 parts of radix arnebiae seu lithospermi, and 20 to 40 parts of alumen. The external lotion is obvious in effects; symptoms of most patients are improved obviously after three days of consumption of the external lotion; the external lotion is used for direct administration at infected parts, and is capable of relieving pain of patients greatly; and even symptoms of patients with severe symptoms are improved obviously after five days of consumption of the external lotion.

The invention relates to a method for simultaneously determining the content of various flavonoid aglycones in lonicerae flos and/or lonicerae flos, in particular to a method for hydrolyzing flavonoidglycosides and determining the content of various flavonoid aglycones in lonicerae flos and/or lonicerae flos through solid-phase extraction purification and LC-MS/MS. The method comprises the stepsof extraction, purification and determination, wherein a hydrochloric acid ethanol solution hydrolysis extraction method is adopted for extraction, the multiple flavonoid aglycones are quercetin, luteolin, kaempferol, apigenin and baicalein, and T-butyl-1, 4-phenol is added into a sample to serve as an antioxidant during extraction. According to the method, T-butyl-1, 4-phenol is added into a sample as an antioxidant during extraction, and research finds that the loss rate of each aglycone in the hydrolysis process is less than 20%. The method has the characteristics of simplicity, convenience, rapidness, low resource consumption and low detection cost.

The invention discloses a children mouthwash containing a cetylpyridinium chloride bacteriostatic agent and a preparation method of the children mouthwash. The children mouthwash is prepared from thefollowing components in parts by weight: 4-6 parts of a humectant, 2-1 parts of green tea, 5-7 parts of cetylpyridinium chloride, 5-7 parts of pomegranate seeds, 5-6 parts of edible essence, 3-5 partsof deionized water, 2-4 parts of flos lonicerae, 2-4 parts of menthyl lactate, 4-6 parts of tripolyphosphate, 3-5 parts of mint powder, 3-7 parts of honey, 7-9 parts of mint, and 1-5 parts of malt syrup. The preparation method comprises the following steps: S1, the honey and washed borneol, flos lonicerae and liquorice are put into a container, crushed and stirred to obtain prepared liquid, thenthe liquid is added into 10-12L of water for decoction, decoction with soft fire is conducted for 40 minutes, and then decoction with big fire is conducted for 5-7 minutes; S2, the obtained liquid andmalt syrup are mixed, stirred and cooled for later use; and S3, the flos lonicerae, mint and the green tea are cleaned and cut off, and then mashed, and filtering with gauze is conducted after mashing. The mouthwash adopts natural plant components, is higher in safety and reliability, and has the efficacy of preventing decayed teeth and dental ulcer.

The invention discloses a preparation method of a compound herba houttuyniae mixture. The mixture is prepared by using herba houttuyniae, radix scutellariae, radix isatidis, fructus forsythiae and flos lonicerae as main medicinal materials; and the method comprises the following steps: performing decoction, obtaining a clear paste, performing alcohol precipitation, performing water precipitation,and preparing the mixture. According to the compound herba houttuyniae mixture prescription and preparation process provided by the invention, through control of temperature during alcohol precipitation, adjustment of the pH value during water precipitation and addition of poloxamer during mixture preparation, the method can effectively increase the content of effective ingredients baicalin and forsythin, the content is better than that of a commercially available compound herba houttuyniae mixture, the stability of the finished product can also be greatly improved, and even after long-term storage, the mixture still has no precipitation.

The invention discloses a melaleuca leucadendron residue biological feed additive and a preparation method thereof. According to the melaleuca leucadendron residue biological feed additive, melaleucaleucadendron residues, unripe tangerines, flos lonicerae japonicae, astragalus polysaccharide, lysine, methionine, salt, composite vitamins, composite minerals, composite enzymes, composite yeasts andcomposite bacteria serve as raw materials. The preparation method of the melaleuca leucadendron residue biological feed additive includes the steps: firstly, water is added into the raw materials, the water and the raw materials are stirred to be uniform, and then a mixture is obtained; then, the mixture is sealed and fermented, and a fermented material is obtained; and finally, the fermented material is dried, smashed and sieved, and then the melaleuca leucadendron residue biological feed additive is obtained. The melaleuca leucadendron residue biological feed additive can improve self-immunity of poultry, significantly reduce the morbidity of the poultry, and accordingly promote development of an ecological breeding industry.

The invention discloses an efficient circulation extraction method for radix polygonati officinalis total flavones and a purification method of the radix polygonati officinalis total flavones and relates to the technical field of biological pharmacy extracting and processing. The extraction method includes the following steps of 1, radix polygonati officinalis raw material pretreatment; 2, circulation extraction. The step of radix polygonati officinalis raw material treatment includes the procedures of drying; smashing; moisture absorbing; soaking. The step of circulation extraction includes the procedures of packing, primary extraction; secondary extraction; N extraction, wherein a primary radix polygonati officinalis flavone extracting solution, a secondary radix polygonati officinalis flavone extracting solution,... and an N radix polygonati officinalis flavone extracting solution which are collected are mixed to be uniform, and then a radix polygonati officinalis total flavone extracting solution is obtained. The purification method includes the following steps that 1, preparation of a purification solution; 2, resin feeding; 3, elution; 4, drying. The advantages that the use quantity of the extraction solvent is small, the requirements for production equipment and production conditions are low, the production cost is low, and multiple effective ingredients can be extracted at a time, and the extraction method and the purification method can be used for extracting and purifying the total flavones in radix polygonati officinalis and can be used for extracting and purifying the total flavones of plants such as ginkgo leaves, honeysuckle flowers and tea leaves.

A Chinese medical cosmetic composition comprising Radix Notoginseng extract, Aloe extract and Flos Lonicerae extract. The Chinese medical cosmetic composition has a scientific and reasonable formula composition, and has the effects of tonifying Qi and nourishing Yin, promoting blood circulation and removing blood stasis, moisturizing and whitening, and strengthening body and sun screening.