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Artificial blood vessel loaded with pseudo-ginseng medicines, and preparation method and application for artificial blood vessel

ActiveCN102784015AGood and sustained antithrombotic effectQuick releaseBlood vesselsForeign objectThrombus
The invention provides an artificial blood vessel loaded with pseudo-ginseng medicines, and a preparation method and application for the artificial blood vessel. The artificial blood vessel sequentially consists of an inner layer, a middle layer and an outer layer which are closely connected with one another; the outer layer consists of nondegradable polymer materials; the middle layer consists of degradable high polymer materials and pseudo-ginseng powder distributed on the surface and/or the inside of the middle layer; the inner layer consists of degradable natural biological materials and pseudo-ginseng powder distributed on the surface and/or the inside of the inner layer; the mass percent of the pseudo-ginseng powder in the inner layer is larger than 5%; the content of the pseudo-ginseng powder in the middle layer is higher than that of the pseudo-ginseng powder in the inner layer; the outer layer is a nondegradable layer and is mainly used for protecting and replacing a blood vessel for a long time; the middle layer is a long-acting antithrombosis layer, can degrade high polymers, and can slowly release medicines so as to realize a long-acting antithrombosis effect; and the inner layer is a quick degrading layer, when the blood vessel is punctured and injured by a foreign object, the pseudo-ginseng medicines wrapped in the blood vessel are directly exposed on a wound, blood is stopped quickly, and the artificial blood vessel is particularly suitable for application to products such as hematodialysis.
Owner:MEDPRIN REGENERATIVE MEDICAL TECH +1

Method for increasing speed of oxidative degradation of organic pollutant in soil

The invention relates to the technical field of pollution repairing and treatment of organic pollutants in soil, and especially discloses a chemically repairing method used in soil polluted by nitrobenzene, nitrochlorobenzene and the like. By means of the method in which the nitrobenzene, the nitrochlorobenzene and the like are firstly reduced into phenylamine which is easy to oxidatively degrade with zero-valent iron and finally the degraded product is oxidized to generate carbon dioxide and water, the soil, which is polluted by the organic pollutants including the nitrobenzene and the like, is completely repaired and removal efficiency of the organic pollutants is increased. The method can achieve a removal rate of the nitrochlorobenzene being 88.3-95.8%, wherein the nitrochlorobenzene is a difficultly-degraded organic substance. The method can overcome problems of low removal efficiency, high medicine cost and troublesome follow-up treatment during removal of the nitrobenzene-series organic pollutants in the soil with Fenton reagents, potassium persulfate, sodium permanganate and the like which are common in the prior art. By means of an indirectly oxidative degradation in which reduction is carried out firstly and oxidization is carried out after that, usage amount of an oxidizing agent can be reduced and the removal rate of the nitrobenzene-series organic pollutants can be increased. Meanwhile, the method is simple in operation and can avoid secondary pollution to environment by the oxidizing agent. The method can effectively achieve in-situ repairing of polluted soil and is especially suitable for complete repair of the soil severely polluted by the organic pollutants in local factory removal.
Owner:江苏迈克环境工程有限公司

Coreopsis tinctoria nutt extract and application thereof

The invention discloses a coreopsis tinctoria nutt extract and application of the coreopsis tinctoria nutt extract in preparation of medicines for treating hyperlipemia and anti-oxidation medicines. A method for preparing the coreopsis tinctoria nutt extract comprises the following steps: performing reflux extraction on a coreopsis tinctoria nutt medicinal material for 2-3 times by 12-25 times of 30-75% ethanol the amount of which is 12-25 times of the amount of the coreopsis tinctoria nutt medicinal material; mixing extract liquids, and concentrating to obtain extracting concentrate; diluting the extracting concentrate by water; refining by an AB-8 macroporous resin; sequentially eluting by water, 10% ethanol, 50-75% ethanol and 95% ethanol, and collecting the part eluted by 50-75% ethanol; concentrating and drying. The coreopsis tinctoria nutt extract comprises 10 flavones serving as main components, wherein the total content of marein and flavanomarein is more than 10 percent. Animal in-vivo experiments indicate that the coreopsis tinctoria nutt extract has a certain blood-fat regulating effect; and in-vitro anti-free radical scavenging experiments indicate that the coreopsis tinctoria nutt extract has a certain anti-oxidation effect, and flavanomarein, marein and the like are main anti-oxidation components.
Owner:南京三谷生物科技发展有限公司

Pest-killing and mite-killing composition

The present invention belongs to the field of insecticides, and relates to a pest-killing and mite-killing composition, which contains an active component A and an active component B, a weight part ratio of the component A to the component B is 1:99-99:1, the active component A is selected from a compound I represented by the following structural formula, the active component B is selected from an organic phosphorus pest/mite killing agent, a nicotine type acetylcholine receptor (nAChR) agonist pest/mite killing agent, an apastia pest/mite killing agent, a proton gradient interference and oxidative phosphorylation affecting uncoupling pest/mite killing agent, a nereistoxin analog pest/mite killing agent, a Ryania receptor regulating pest/mite killing agent, a voltage-dependent sodium ion channel blocking pest/mite killing agent, an ecdysone receptor stimulating pest/mite killing agent, an amino butyric acid (GABA) gated chloride channel antagonism pest/mite killing agent, a microorganism pest/mite killing agent or other pest/mite killing agents, and the active component A has the following structure. The composition of the present invention has advantages of significant synergy, resistance delaying and the like, and can be used for prevention and control of a variety of pests. The compound I is defined in the instruction.
Owner:SHENYANG SCIENCREAT CHEM
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