Search

Copyright of Bulletin of the Chinese Academy of Sciences / Chung-kuo ko Hsueh Yuan Yuan Kan is the property of Institutes of Science & Development, Chinese Academy of Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Water Conservancy & Electric Power Technology & Application is the property of Omniscient Pte. Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Advanced Textile Technology is the property of Zhejiang Sci-Tech University Magazines and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Food Research & Development is the property of Food Research & Development Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Geoscientica Sinica is the property of Acta Geoscientica Sinica Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

To reduce the damage of external impact on the human body, there are sponges, foams and other cushioning materials on the market at present. However, their preparation process and use cause environmental pollution. It is urgent to develop flexible cushioning materials with lightness, softness, durability, superior performance, environmental friendliness and low carbon emissions as helmet linings and insoles.In this paper, five kinds of warp-knitted spacer fabrics with the same raw materials but different organizational structures were selected as the reinforcing matrix, and silicone rubber was used as the filler to prepare flexible cushioning materials with different filling rates. The compression and cushioning properties were tested and analyzed, and the relationship between the process parameters and properties of the cushioning materials was explored. When the filling rate is 30% and 50%, the flexible buffer material has good elasticity. When the filling rate is 70% and 100%, the flexible buffer material has good compression resistance. Under the same filling rate of different fabrics, the shape of the compression load curve is similar. The load capacity of the flexible buffer material with silicone rubber filling rate of 30%, 50%, 70% and 100% increases as a multiple of the pure fabric. There is a multiple linear regression relationship between the maximum compression and impact load of the flexible cushioning material and the filling rate and the structural parameters of the warp knitted spacer fabric. The process parameters of warp knitted spacer fabrics have different effects on the load performance of buffer materials with different filling rates. When the filling rate is large, the hardness of the flexible buffer material is strengthened and the slow elasticity is weakened. Selecting the highlight zone parameters in the figure can reduce the use of silicone rubber. The filling rate has a significant effect on the cushioning capacity of the flexible cushioning material. A small filling rate can improve the cushioning performance of the warp knitted spacer fabric. The thickness of the warp-knitted spacer fabric has a great influence on the cushioning performance of the flexible cushioning material. The filling rate and thickness parameters can refer to the blue area in the figure to reduce the production cost of the enterprise. In this paper, silicone rubber is filled in the warp knitted spacer fabric, and the influence of filling rate and fabric structure on the performance of the flexible buffer material is investigated. Greenhouse silicone rubber can improve the load bearing capacity and buffering capacity of warp knitted spacer fabrics. With the increase of the filling rate, the load and impact resistance increase exponentially. The filling rate has a great influence on the load capacity of the flexible cushioning material, and the thickness of the warp knitted spacer fabric has a significant influence on the cushioning capacity of the flexible cushioning material. This flexible cushioning material can be applied to the fields of cushioning or protection. The manufacturing process of this flexible buffer material has basically no pollution to the environment and meets the requirements of environmental protection. Flexible cushioning materials have the ability to slow down and impact resistance, which can protect the body and have great application prospects in the fields of protection and buffering. [ABSTRACT FROM AUTHOR]

Copyright of Acta Geoscientica Sinica is the property of Acta Geoscientica Sinica Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Based on the first principles of density functional theory, the factors for the difference of γ' phase distribution in the precipitation strengthening of W and Mo doped nickel base superalloy were studied. The system model of γ' - Ni3 ( Al3/8 Ti5/8 ) phase was established by VASP software, and the substitution energies of W and Mo atoms in different positions were calculated by selecting different array points in non - equivalent positions, and the occupying tendencies of W and Mo atoms in γ' phase were analyzed. The adsorption energy of the interface before and after doping W and Mo atoms were calculated, and the influences of doping W and Mo on the phase boundary were studied. The diffusion paths and potential barriers of Wand Mo atoms from γ to γ' were also calculated. The results show that the doping of W or Mo preferentially replaces No. 5 Al atom in γ' - Ni3 ( Al3/8 Ti5/8 ) phase and improves the stability of the phase boundary. The difference in allocation is caused by the fact that W replacing Al atom in the γ' phase is more likely to form vacancies than Mo, while Ni atoms in the y phase are more difficult to form vacancies and require more energy for reverse diffusion. [ABSTRACT FROM AUTHOR]

Copyright of Acta Petrologica et Mineralogica / Yanshi Kuangwuxue Zazhi is the property of Acta Petrologica et Mineralogica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Petrologica et Mineralogica / Yanshi Kuangwuxue Zazhi is the property of Acta Petrologica et Mineralogica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Earth Sciences & Environment is the property of Journal of Earth Sciences & Environment and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

To study the surgical treatment, techniques and outcomes of the middle skull base tumors communicating adjacent inferior temporal fossa(ITF) and pterygopalatine fossa(PPF). Methods From 2013 to 2018, the Army Medical Center admitted 17 patients with tumors communicate the middle skull base and ITF and/or PPF. Among these surgeries, pterion approach was adopted in 4 cases, transnasal endoscopic approach in 1 and orbital-zygomatic approach or preauricular trans-zygomatic approach in 12. Postopratively, the patients were suggested to undergo CT or MR regularly and followed up clinically or through the telephone. Results In this group, postoperative pathological outcomes indicated 4 malignant, 3 borderline, 10 benign tumors. Among the 10 patients with benign tumor, 8 had total tumor resection, 1 had partial resection, and 1 had biopsy only. All 3 patients with borderline tumor had complete tumor resection. Among the 4 patients with malignant tumor, 2 had total resection and 2 had partial resection. Postoperative cerebrospinal fluid leakage and intracranial infection occurred in 2 patients, 1 of whom developed hydrocephalus. There were 1 case of oculomotor nerve injury, 1 case of transient facial paralysis, and 1 case of transient facial numbness.2 patients were left with mild facial numbness. Conclusions The benign tumors in the communication tumors from the middle skull base to ITF and/or PPF can be mostly resected through the preauricular trans-zygomatic approach with good outcomes. For malignancies, a more aggressive approach, aimed at the en bloc excision, may yield a favorable prognosis. Due to the complex anatomical structures in the region, and the diverse origin of the lesions, multidisciplinary surgery should be more feasible. [ABSTRACT FROM AUTHOR]

In view of the inefficiency problem, of the cache replacement strategy for current content-centric networks, we propose a cache replacement algorithm based on potential energy cooling (PEC-Rep), which combines the "natural coding" phenomenon with the reference of the concept of "potential energy". The PEC-Rep can evaluate content value according to the access number and time interval. And it deletes the content with the minimum value when it performs content replacement so that the node can maintain maximum value to satisfy the subsequent requests of users. Simulation results show that the PEC-Rep can effectively improve the domain-cache hit ratio, reduce the server load and improve the overall performance of the CCN. [ABSTRACT FROM AUTHOR]

Copyright of Industrial Minerals & Processing / Huagong Kuangwu yu Jiagong is the property of Industrial Minerals & Processing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Water Conservancy & Electric Power Technology & Application is the property of Omniscient Pte. Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Southwest China Journal of Agricultural Sciences is the property of Editorial Department of Southwest China Journal of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)