54results about How to "Reduce risk of migration" patented technology

During a process of migrating a source system into a standardized virtual environment, virtual machine instances of the source system executing in a hypervisor are snapshotted as virtual machine images in an operational repository of the hypervisor. The virtual machine images in the operational repository are short-term snapshots. From time to time during the migration process, long-term snapshots of the source system are created by checking given ones of the virtual machine images from the hypervisor operational repository into an image library as image objects.

The present invention relates to stent structures having improved migration resistance. In particular, the invention relates to mesh stents, such as braided or twisted stent designs, where at least a portion of the stent is folded back over itself to form a multi-layered stent device. Such multi-layered portions provide for migration resistance, among other advantages.

Aneurysms are treated by placing a scaffold across an aneurysmal sac to provide a blood flow lumen therethrough. An aneurysmal space surrounding the scaffold is filled with one or more expandable structures which are simultaneously or sequentially expanded to fill the aneurysmal space and reduce the risk of endoluminal leaks and scaffold migration. The expandable structures are typically inflatable and delivered by delivery catheter, optionally with an inflation tube or structure attached to the expandable structure.

Methods, devices and systems facilitate retention of a variety of therapeutic devices. Devices generally include an anchoring element, which has been designed to promote fibrotic ingrowth, and an anchored device, which has been designed to firmly engage the complementary region of the anchoring element. The anchoring element may be placed in a minimally invasive procedure temporally separated from the deployment of the anchored device. Once enough time has passed to ensure appropriate fixation of the anchoring element by tissue and cellular ingrowth at the site of placement, the anchored device may then be deployed during which it firmly engages the complementary region of the anchoring element. In this manner, a firm attachment to the implantation site may be made with a minimum of required hardware. Some embodiments are delivered through a delivery tube or catheter and while some embodiments may require laparoscopy or open surgery for one or more of the placement procedures. Some embodiments anchor devices within the cardiovascular tree while others may anchor devices within the gastrointestinal, peritoneal, pleural, pulmonary, urogynecologic, nasopharyngeal or dermatologic regions of the body. An alternative embodiment provides for the placement of the anchoring element and anchored device simultaneously, but allows for their removal separately. This embodiment allows the device, which may be placed only temporarily and be designed to be removed, to experience significant fibrotic ingrowth, but then to be easily detached from the ingrowth-anchored region to allow for simple and quick device removal.

The invention relates to a natural regulating agent for treating heavy metal polluted farmland soil and a preparation method thereof. The natural regulating agent comprises tea waste and potassium humate. The preparation method comprises the following steps of firstly, drying tea waste in the sun and reserving for standby application; secondly, removing impurities of the material rich in humic acid, air drying and grinding, sieving by a 5-mesh sieve and reserving for standby application; then adding KOH (potassium hydroxide) into the material rich in humic acid, oscillating intermittently, filtering by filter cloth, and obtaining potassium humate; finally, uniformly mixing the tea waste and potassium humate, grinding, sieving by a 5-mesh sieve, thereby obtaining the natural regulating agent for heavy metal polluted farmland soil. The natural regulating agent comprises tea waste and potassium humate which are rich in functional groups for adsorbing and fixing heavy metals, such as phenolic hydroxyl group and carboxyl, thus being capable of effectively adsorbing various active heavy metals in the farmland soil.

The invention discloses a method for using chlorpyrifos and a CNT (carbon nanometer tube) interlayer to regulate lawn grass heavy metal accumulation. The method for using the chlorpyrifos and the CNT interlayer to regulate the lawn grass heavy metal accumulation uses an oxidative modification CNT as the interlayer, aims at using the interlayer to reduce underground leakage influences of heavy metal after the chlorpyrifos and compost compound heavy metal are coupled, and provides important technical support to the oxidative modification CNT in remediation of heavy metal coupling pollution. An experiment result proves that under action of the chlorpyrifos, adding of the oxidative modification CNT mixed with all layers increases heavy metal accumulation amount of aboveground parts of festuca arundinacea, and compared with contrast groups, heavy metal total amount of percolation liquid in the CNT interlayer is reduced. The adding of the oxidative modification CNT reduces the risk that the heavy metal migrates towards underground water to a certain extent, and then technical support is provided to practical application of the method for using the chlorpyrifos and the CNT interlayer to regulate the lawn grass heavy metal accumulation.

The invention discloses a method for regulating turfgrass heavy metal accumulation by using an OTC (oxytetracycline) and carbon nano-tube interlayer. An oxide-modified carbon nano-tube is used as an interlayer. The objectives are to reduce effect of leaking heavy metal to underground after the OTC is coupled with compost compound heavy metal, and to provide important technical support for a modified carbon nano-tube repairing heavy metal coupled pollution. Experiment results show that under the action of the OTC, adding of the carbon nano-tubes mixed in layers increases heavy metal accumulation amount of the overground part of festuca arundinacea, and heavy metal total amount in percolate in the modified carbon nano-tube interlayer is lower than that of control groups. The addition of the modified carbon nano-tube reduces risks that heavy metal is transferred to underground water to a certain degree, and provides technical support for practical application of the method.

An implantable medical device carries on at least part of its external surface a coating. The coating consists essentially of a terpolymer of vinyl pyrrolidone, acrylic acid and activated acrylic acid, and optionally a colouring agent.

The invention discloses a preparation method for plastic kitchen utensils with transfer-resistant colorant. The method comprises the following steps of: a) adding dried polypropylene particles and liquid paraffin in a mass ratio of (2,500:1)-(5,000-1) into a material mixing cylinder, and mixing and stirring to obtain wet polypropylene; b) adding the wet polypropylene particles, pigment, and a superdispersant in a mass ratio of (5,000:1:10)-(50,000:1:20) into the material mixing cylinder, and mixing and stirring to establish a transparent product pigment super-dispersion system; adding the wet polypropylene particles, the pigment, and the superdispersant in a mass ratio of (500:1:10)-(5,000:1:20) into the material mixing cylinder, and mixing and stirring to establish a solid color product pigment super-dispersion system; and c) pre-heating and drying a mixture in the material mixing cylinder in a material drying cylinder at the temperature of between 20 and 25 DEG C for 4 to 24 hours, injecting the preheated mixture into an injection molding machine and performing injection molding to obtain the plastic kitchen utensils. The colorant of the prepared plastic kitchen utensils is high in transfer resistance, and product yield is improved.

The invention provides a dual limit value heavy metal pollution degree degrading method, which is based on two dimensions with two limit values namely total heavy metal content and leaching concentration. The benchmark value and limit value of total heavy metal content are used to grade polluted soil or sediment, the control on total heavy metal content is emphasized, and the environment capacity of soil and sediment is increased. The benchmark value and limit value of leaching concentration of heavy metals are used to grade polluted soil or sediment, the control on the heavy metal chemical morphology easy for mobility is emphasized, and the risk that heavy metals in the soil and sediment migrate to the environment is reduced. The provided method solve that problems that (1) the method that solely relies on total amount to grade cannot really represent the bio-toxicity and mobility of pollutants; (2) the operation of the method that solely relies on morphology is bad, moreover, the evaluation is exaggerated, and the result is not accord with the actual situation.

The invention provides an intensive service processing system and method. The intensive service processing system comprises a front-end unit, a gateway configuration unit, an engine unit and a data layer, the front end unit is connected with the gateway configuration unit, the gateway configuration unit is further connected with the engine unit, and the engine unit is further connected with the data layer; the engine unit comprises a special area engine, a form engine, a workflow engine and a workflow engine adapter; the special area engine is used for executing the functions of special area component configuration, special area authority management and special area operation data statistics; the form engine is used for executing functions of a business component library, a form control, form rule configuration and data rule configuration; the workflow engine is used for executing functions of a flow component, flow configuration, flow processing, form engine integration and special area engine integration; and the workflow engine adapter is used for executing a function of integrating the workflow engine with an existing workflow engine of the enterprise.

The invention discloses a distributed file migration method and system based on object storage, and belongs to the field of cloud computing object storage. The method comprises the following specific steps: S1, checking whether a migration result is safe or not; s2, using a RabbitMq message queue to issue a message; s3, acquiring consumption messages in the message queue; and s4, detecting a server of the distributed file migration system by using heartbeat detection. According to the method, by optimizing the uploading and downloading process and through distributed downloading and uploading, the higher migration speed is achieved, only the task being executed is recorded through the database, the data volume of the database is reduced, the failed task is processed in time through timing heartbeat detection, task information in the database is reissued to the message queue, and automatic re-execution after failure is achieved. According to the method and system, the fault tolerance in the migration process can be increased, the risk of user migration is reduced, and the experience of a user for migrating a large number of files can be effectively improved on the basis of ensuring high speed and equal risk.

The invention relates to the field of uranium mine radioactive pollution treatment, in particular to enterobacter cloacae and application thereof. The collection number of the enterobacter cloacae is CGMCC (China General Microbiological Culture Collection Center) NO: The enterobacter cloacae is applied to uranium element reduction and uranium ore slag pollution treatment. The invention provides a preparation method of active bacterial liquid, which comprises the following steps: inoculating enterobacter cloacae into a liquid culture medium, standing and culturing to obtain a basic active bacterial agent; and inoculating the basic active bacterial agent into a fermentation medium according to an inoculation amount of 2-5%, and carrying out shake culture, so that the number of cells in each milliliter of the fermentation medium is not less than 3 * 10 < 9 >-5 * 10 < 9 >, thereby obtaining the active bacterial liquid. The strain has a reduction effect on uranium in tailings, uranium is converted into a reduction state which is not easy to dissolve from an oxidation state which is easy to dissolve, and the uranium is fixed in situ, so that the risk of migration to the external environment is reduced, and uranium pollution is inhibited from the source.