31results about How to "Prove security" patented technology

The invention provides an alveolar bone repair material. The repair material contains hydroxyapatite, allyl trimethyl ammonium chloride or acrylamide modified chitosan, hydroxypropyl methyl celluloseand BMP-2 polypeptide. The material can be applied to alveolar bone repair and dental implantation.

The invention discloses an attribute-based encryption method for a lattice multi-authority key strategy. The method comprises the following steps of firstly, establishing a system; secondly, generating a key; thirdly, encrypting a message; and lastly, decrypting the message, wherein a key management center of the system is formed by utilizing a center authority and a plurality of authorities charging different attributes, and is used for issuing the key to each user together, so that the practicability of attribute encryption is improved, the security of a scheme is proved, and the efficiency of the scheme is decided along with the number of the attributes participating in encryption and decryption, and is not decided by upper bounds of the attributes participating in encryption and decryption in the system. The method solves the problems that the encryption method in the prior art is unable to implement cooperation of different mechanisms and is low in workload.

The invention provides a free space continuous variable quantum key distribution protocol based on discrete modulation, which comprises the following steps that: a key sender Alice uses an independentoriginal data stream to discretely modulate continuous laser in a specified clock period, and generates a light quantum signal after passing through an attenuator; the discretely modulated light quantum signal is transmitted through a free space quantum channel and then reaches a secret key receiver Bob, and the Bob measures two regular components of a light quantum state by adopting a zero beatdetector; the Bob sends side information to the Alice through a classical channel, and the Alice executes reverse harmony to correct data of the Alice and is associated with a quantum state measurement value of the Bob; then parameter estimation and private amplification are executed, and finally a secret key is generated. According to the high-speed continuous variable quantum key distribution protocol based on discrete modulation, high-speed free space continuous variable quantum key distribution is achieved, and meanwhile the safety of the protocol is proved by integrating various atmospheric turbulence effects.

The invention discloses an authentication method based on a smart card in a multi-server environment. According to the authentication method, the participation of a third party in authentication is not needed, a user just needs to register for one time, the smart card only needs to store information of constants, the authentication and access among multiple servers can be realized, a server end also does not need to store any user information, and thus a problem that the information stored by the smart card is increased with the increase of registration servers when no third party participates authentication in the multi-server environment is solved. The security of an authentication model is proved through BAN logic analysis, at the same time performance analysis shows that the authentication scheme of the invention has a low storage cost requirement compared with an existing authentication scheme based on the smart card in the multi-server environment in the condition that computation cost and communication cost do not increase burden significantly.

The invention discloses a Lansoprazole sodium suspension preparation for injection. The suspension preparation is characterized by containing Lansoprazole sodium, an emulsifier, a carrier material, an antioxidant and an excipient, wherein the emulsifier is a compound emulsifier containing two or more than two of poloxamer 188, sorbitan fatty acid 60, polysorbate 80, glyceryl monostearate and glycerin monostearate. Preferably, the Lansoprazole sodium suspension preparation contains 4 parts of Lansoprazole sodium, 3-5 parts of emulsifier, 2-4 parts of carrier material, 1-2 parts of antioxidant and 3-4 parts of excipient, wherein the weight ratio of the poloxamer 188 to the sorbitan fatty acid 60, the polysorbate 80, the glyceryl monostearate or the glycerin monostearate is 4-2:1. The Lansoprazole sodium suspension preparation for injection prepared by the invention has low-content harmful substances and good stability. The new application of the preparation in the initial treatment of erosive esophagitis patients which can not accept oral drug treatment has the satisfactory technical effect.

The invention relates to a method of fine processing of puffer fish. Firstly, puffer fish is cleaned and treated to remove blood, and then the detoxication treatment is performed by cutting off the fish fins, the mouth, the skin, the eyes, the gill and the viscera. Secondly, the edible part treatment is performed and comprises head, body and bone treatments. Further, the blood, the mucosa, the mucilage, the subcutaneous tissue, the fin, the skin, the mouth, the eyes, the gill and the viscera produced in the process are collected and placed in a dish for inedible parts. Finally, the treated muscle, head, rib and spinal bone are soaked in clear water for 3-6 hours at 0-2 DEG C (the soaking water is replaced for 3 times) and then placed in a dish for edible parts. The method reduces tetrodotoxin and inedible parts to the greatest extent, ensures the safety and sanitation of the processed puffer fish products, and ensures the safety and stability in edibility of puffer fish after long-term preservation.

The invention belongs to the field of biomedical materials containing active proteins and the field of regenerative medicine, and specifically provides a bone repair material containing rH-BMP2 and phosphate, wherein the bone repair material contains modified chitosan, phosphate and rH-BMP2, can be used for the repair of bone injury, and specifically comprises, by mass, 1-10% of rH-BMP2, 10-50% ofchitosan, 10-50% of tetracalcium phosphate, 5-20% of calcium hydrogen phosphate, 0.2-5% of disodium hydrogen phosphate, and 0.2-5% of sodium dihydrogen phosphate. According to the present invention,the allyltrimethylammonium chloride or acrylamide modified chitosan and the gelatin are used as the sustained-release carrier so as to substantially improve the degradation/drug release time and significantly reduce the allergicity; the results of in vitro release experiments and animal experiments show that the bone repair material of the present invention has good effects significantly superiorto chitosan and existing similar materials; and the results of cytotoxicity test initially prove the safety of the bone repair material of the present invention.

The invention relates to physical layer information security techniques for wireless communications, and discloses a system safety performance evaluation method based on FDA camouflage spoofing. The method comprises the following steps: step 1, taking a carrier of a certain array element of an FDA antenna as a reference carrier frequency, adding different frequency offsets to carrier frequencies of other array elements on the basis of the reference array element carrier frequency, and then transmitting a signal carrying information through the FDA antenna; 2, enabling a legal user D to designa signal receiver of the legal user D according to the characteristics of a signal transmitter, and to perform information demodulation on the received signal; 3, enabling an eavesdropping user E to judge the signals received by the receiver, and to perform information demodulation on the received signals in an OFDM signal processing mode according to the characteristics of the received signals; and 4, respectively calculating the receiving signal-to-noise ratios of the legal user and the eavesdropping user according to the step 2 and the step 3, and then calculating the safety transmission rate of the system so as to evaluate the safety performance of the system. According to the invention, safe transmission of information is ensured.

The invention discloses a traditional Chinese medicine composition for treating migraine, a preparation method and an application. The invention relates to a new traditional Chinese medicine composition for treating migraine, and belongs to the technical field of traditional Chinese medicine. The migraine is headache caused by periodically attacked nerve-vascular function disorder, and the global morbidity of the disease is 14.7%, and domestic morbidity is 732.1/100, 000; meanwhile, migraine is closely related to cerebral infarction, depression and other diseases; the World Health Organization regards it as the one of the most disabling chronic disease. The disease has not special treatment method, and western drug therapy can ease the symptom of a part of patient, but is often accompanied with obvious side effect, the treatment may cause drug addiction and even drug-induced headache. The method of harmonizing nutrient and defense of traditional Chinese medicine has good treatment effect to migraine, can integrally regulate, and is small in side effect, free from drug dependence. The market is lack of new traditional Chinese medicine of treating migraine. Specific to the phase characteristics of migraine, the four-smooth soup is prepared by taking method of harmonizing nutrient and defense as the basis, summarizing experiences, and carefully selecting effective drugs and has good clinical treatment effect to migraine patient with cold tendency or deficiency of yang, and can make up the shortcomings of the existed treatment drug.

The invention relates to the field of information security, in particular to a novel distributed cloud encryption algorithm method, which comprises the following steps of: 1) constructing a storage model cooperatively matched with a plurality of encryption modes, the encryption modes comprising onions search, basic operation onions, onions with Euclidean distances and onions with dot products; 2)corresponding different types of data mining algorithms to the searched onions, the basic operation onions, the Euclidean distance onions and the dot product onions in the step 1); and 3) carrying outciphertext optimization on the data mining algorithm in the step 2). According to the invention, a plurality of encryption algorithms cooperate with each other; the system safety can be proved theoretically; important reference can be provided for realizing other ciphertext data mining algorithms, hardware encryption is used, the function of resisting access mode leakage is realized, a cloud platform and a user application layer do not need to be modified in the arrangement process, the arrangement is convenient, the universality and the usability are realized, and the security of the cloud platform is effectively improved.

The invention provides a composite carbonized polymer dot as well as a preparation method and application thereof. The composite carbonized polymer dot comprises a carbonized polymer dot and S100 calcium binding protein, and the carbonized polymer dot and the S100 calcium binding protein are connected through an amido bond. The composite carbonized polymer dots (pep-CPDs) can be used for rapidly and sensitively detecting the mTBI biomarker S100-beta, and in-vivo and in-vitro imaging is realized. A lactic dehydrogenase (LDH) test, an MTT test, cell imaging and a mouse acute toxicity test prove that the pep-CPDs are safe and low in cytotoxicity. By detecting S100-beta in a blood sample of an mTBI patient, the reliability of detecting an actual sample by pep-CPDs is proved.

The invention relates to an application of a young plasma exosome in preparation of a medicine for treating degenerative diseases caused by senescence. The exosome extracted from blood plasma of young people is used for treating degenerative diseases caused by aging, and has the advantages of obvious effect, low treatment cost, easiness in storage of the kit and the like; the technical method for treating mitochondrial dysfunction caused by aging by relying on young plasma exosomes solves the problems of high production cost, single target spot and the like of the existing neurodegenerative disease medicines to a great extent, and is a low-cost and high-efficiency neurodegenerative disease treatment mode; meanwhile, the safety of an exosome treatment mode based on the invention is proved. The method can be widely applied to related work such as treatment of senescence-induced degenerative diseases, and becomes an effective means for treatment of senescence-induced degenerative diseases.

The invention provides a medicinal composition against bovine pasteurella multocida, belongs to the technical field of medicinal compositions, and aims to provide an anti-bacterial medicinal composition for treating bovine pasteurella multocida infection by effectively synthesizing a combined medicine from three medicinal materials. The effective ingredients of the medicinal composition are ciprofloxacin, thioridazine and tetracycline. The medicinal composition has clinical effects including bacterium resistance, inflammation diminishing and the like, and can effectively treat bovine pasteurella multocida infection. Furthermore, the medicinal composition has efficient bactericidal activity and can greatly reduce dosage of administration, so that toxic and side effects of medicines can be greatly reduced. According to the fundamental mechanism of the medicinal composition effect, an excellent antibacterial effect can be achieved through an efflux pump for jointly inhibiting bacteria andsynthesis and duplication of DNA. The clinical curative effect and safety of the medicine can be further proved.