With the development of cities and the advancement of urbanization in China, the underground pipeline system in cities is becoming more and more complicated. Functional defects and structural defects caused by disrepa...With the development of cities and the advancement of urbanization in China, the underground pipeline system in cities is becoming more and more complicated. Functional defects and structural defects caused by disrepair and geological uneven settlement of urban water supply facilities are increasingly prominent. The contradiction between the population growth brought by the rapid development of the city and the high-quality and high-value development requirements for the environment has gradually increased, making it more difficult to excavate and repair. Compared with excavation repair, trenchless repair has the characteristics of no impact on traffic, no damage to the environment, short construction period, good construction safety and significant social benefits. Through the summary of flexible lining technology, reference and technical support are provided for the implementation of subsequent similar projects. The trenchless repair and renovation engineering technology of municipal underground pipelines has been recognized by people due to its small interference to the ground, high construction speed, low comprehensive cost, good safety, low carbon emissions and other reasons, and has been gradually introduced and popularized in the field of municipal pipe network construction, renovation and repair.展开更多
Conventional vs. polyethylene glycol （PEG）-fusion tech- nologies to repair severed spinal axons： Most spinal cord injuries （SCIs） involve cutor crush-severance of spinal tract axons in the central nervous system ...Conventional vs. polyethylene glycol （PEG）-fusion tech- nologies to repair severed spinal axons： Most spinal cord injuries （SCIs） involve cutor crush-severance of spinal tract axons in the central nervous system （CNS）. Clinical out- comes after CNS axonal severance is very poor because proximal segments of CNS axons lack a suitable environment for outgrowth （Kakulas, 1999; Fitch and Silver, 2008; Rowland et al., 2008; Kwon et al., 2010） and therefore do not naturally regenerate （Ramon y Caial, 1928）. Current strategies to try to increase behavioral recovery after SCI are focused on en- hancing the environment for axonal outgrowth.展开更多
The water ecological environment has an important impact on the regional environment. With the continuous improvement of people's thinking and cognition, more and more practical experience in the protection of wat...The water ecological environment has an important impact on the regional environment. With the continuous improvement of people's thinking and cognition, more and more practical experience in the protection of water ecological environment has proved that only by fully protecting the ecological home on which we rely for survival, can the harmonious development operation mechanism for basic ecological environment and economic development be built, the advantages of water ecological environment be better brought into play, and the living environment level of residents be improved. The protection and restoration of water ecological environment is not only related to the environmental protection department but also to every citizen. It is an important measure to promote the harmonious development of social economy, culture and ecology.展开更多
文摘With the development of cities and the advancement of urbanization in China, the underground pipeline system in cities is becoming more and more complicated. Functional defects and structural defects caused by disrepair and geological uneven settlement of urban water supply facilities are increasingly prominent. The contradiction between the population growth brought by the rapid development of the city and the high-quality and high-value development requirements for the environment has gradually increased, making it more difficult to excavate and repair. Compared with excavation repair, trenchless repair has the characteristics of no impact on traffic, no damage to the environment, short construction period, good construction safety and significant social benefits. Through the summary of flexible lining technology, reference and technical support are provided for the implementation of subsequent similar projects. The trenchless repair and renovation engineering technology of municipal underground pipelines has been recognized by people due to its small interference to the ground, high construction speed, low comprehensive cost, good safety, low carbon emissions and other reasons, and has been gradually introduced and popularized in the field of municipal pipe network construction, renovation and repair.
基金supported by grants from the Lone Star Paralysis Foundation to GDB and JDPby an NIH grant R01 NS081063 to GD
文摘Conventional vs. polyethylene glycol （PEG）-fusion tech- nologies to repair severed spinal axons： Most spinal cord injuries （SCIs） involve cutor crush-severance of spinal tract axons in the central nervous system （CNS）. Clinical out- comes after CNS axonal severance is very poor because proximal segments of CNS axons lack a suitable environment for outgrowth （Kakulas, 1999; Fitch and Silver, 2008; Rowland et al., 2008; Kwon et al., 2010） and therefore do not naturally regenerate （Ramon y Caial, 1928）. Current strategies to try to increase behavioral recovery after SCI are focused on en- hancing the environment for axonal outgrowth.
文摘The water ecological environment has an important impact on the regional environment. With the continuous improvement of people's thinking and cognition, more and more practical experience in the protection of water ecological environment has proved that only by fully protecting the ecological home on which we rely for survival, can the harmonious development operation mechanism for basic ecological environment and economic development be built, the advantages of water ecological environment be better brought into play, and the living environment level of residents be improved. The protection and restoration of water ecological environment is not only related to the environmental protection department but also to every citizen. It is an important measure to promote the harmonious development of social economy, culture and ecology.
