为进一步推动女性科技工作者的影响力与贡献力,时值世界第114个国际劳动妇女节到来之际,IEEE PES WIP(IEEE PES Women in Power)联合《高电压技术》《高压电器》《湖北电力》,面向广大IEEE PES WIP会员征集关于“IEEE PES CHINA WIP高...为进一步推动女性科技工作者的影响力与贡献力,时值世界第114个国际劳动妇女节到来之际,IEEE PES WIP(IEEE PES Women in Power)联合《高电压技术》《高压电器》《湖北电力》,面向广大IEEE PES WIP会员征集关于“IEEE PES CHINA WIP高电压工程与新技术”专题的高水平科技论文。本专题拟于2024年下半年刊发,真诚欢迎广大IEEE PES WIP中国区会员联合国内外专家学者以及国家级科研计划承担单位踊跃投稿!展开更多
Compared to inorganic supports, polymeric supports can offer additional benefits, e.g., easier processing and cheaper. However, the organic surface has weak adhesion to the zeolitic imidazolate frameworks(ZIFs) membra...Compared to inorganic supports, polymeric supports can offer additional benefits, e.g., easier processing and cheaper. However, the organic surface has weak adhesion to the zeolitic imidazolate frameworks(ZIFs) membrane layer, which usually requires complex surface modification or seeding. Herein, we demonstrate that a dual-layer asymmetric polymer support prepared by a simple spinning process is a good candidate for the preparation of ZIF-8 membrane. The inner layer of the support is an organic hollow fiber(PES) with finger-like pores, and the outer layer is a ZnO-PES composite layer with finger-like pores also. The ZnO-PES composite layer is expected to contain uniform ZnO crystals in the polymer matrix, i.e., the ZnO particles in the skin layer of the support are not easy to fall off. Under the induction of ZnO particles in the outer layers, continuous ZIF-8 membranes can be prepared by single in-situ crystallization, showing good adhesion to the supports. The obtained ZIF-8 membranes show a H_(2) permeance of 8.7 × 10^(-8)mol·m^(-2)·s^(-1)·Pa^(-1) with a H_(2)/N_(2) ideal separation selectivity of 18.0. The design and preparation of this dual-layer polymer support is expected to promote the large-scale application of MOF membranes on polymer supports.展开更多
BACKGROUND Osteochondroma is one of the most common benign bone tumors,and it may cause bone and joint deformities and limited range of motion of an adjacent joint.The pes anserinus region is one of the most frequent ...BACKGROUND Osteochondroma is one of the most common benign bone tumors,and it may cause bone and joint deformities and limited range of motion of an adjacent joint.The pes anserinus region is one of the most frequent sites of osteochondroma,but knee locking caused by osteochondromas in the pes anserinus region is extremely rare.CASE SUMMARY We describe a 13-year-old Japanese girl’s extra-articular knee locking that occurred when the semitendinosus tendon got caught in osteochondroma that had developed in the pes anserinus region.The osteochondroma was surgically resected.The postoperative outcome has been excellent,with no recurrence of knee locking or tumor one-year post-surgery.CONCLUSION When a young person develops knee locking,the possibility of extra-articular as well as intra-articular locking should be considered.Osteochondroma,one of the causes of extra-articular locking,can be treated with surgery with good postoperative results.展开更多
为进一步推动女性科技工作者的影响力与贡献力,时值世界第114个国际劳动妇女节到来之际,IEEE PES WIP(IEEE PES Women in Power)联合《高电压技术》《高压电器》《湖北电力》,面向广大IEEE PES WIP会员征集关于“IEEE PES CHINA WIP高...为进一步推动女性科技工作者的影响力与贡献力,时值世界第114个国际劳动妇女节到来之际,IEEE PES WIP(IEEE PES Women in Power)联合《高电压技术》《高压电器》《湖北电力》,面向广大IEEE PES WIP会员征集关于“IEEE PES CHINA WIP高电压工程与新技术”专题的高水平科技论文。本专题拟于2024年下半年刊发,真诚欢迎广大IEEE PES WIP中国区会员联合国内外专家学者以及国家级科研计划承担单位踊跃投稿!展开更多
Ultrafiltration membranes were prepared using phenolphthalein polyarylethersulfone (PES-C),polyethersulfone (PES) and poly(phthalazinone ether sulfone ketone) (PPESK) as polymers and NMP,DMAc,DMF and DMSO as solvents ...Ultrafiltration membranes were prepared using phenolphthalein polyarylethersulfone (PES-C),polyethersulfone (PES) and poly(phthalazinone ether sulfone ketone) (PPESK) as polymers and NMP,DMAc,DMF and DMSO as solvents by immersion precipitation via phase inversion.Experimental data of thermodynamic properties of the polymer solutions and kinetic process of membrane formation were reported.For polymer solutions with good solvents,the sequence of the viscous flow activation energy (E_η) was coincident with tha...展开更多
文摘为进一步推动女性科技工作者的影响力与贡献力,时值世界第114个国际劳动妇女节到来之际,IEEE PES WIP(IEEE PES Women in Power)联合《高电压技术》《高压电器》《湖北电力》,面向广大IEEE PES WIP会员征集关于“IEEE PES CHINA WIP高电压工程与新技术”专题的高水平科技论文。本专题拟于2024年下半年刊发,真诚欢迎广大IEEE PES WIP中国区会员联合国内外专家学者以及国家级科研计划承担单位踊跃投稿!
基金supported by the National Natural Science Foundation of China (21978253)the Fundamental Research Funds for the Central Universities (226-2022-00020, 226-2022-00055)。
文摘Compared to inorganic supports, polymeric supports can offer additional benefits, e.g., easier processing and cheaper. However, the organic surface has weak adhesion to the zeolitic imidazolate frameworks(ZIFs) membrane layer, which usually requires complex surface modification or seeding. Herein, we demonstrate that a dual-layer asymmetric polymer support prepared by a simple spinning process is a good candidate for the preparation of ZIF-8 membrane. The inner layer of the support is an organic hollow fiber(PES) with finger-like pores, and the outer layer is a ZnO-PES composite layer with finger-like pores also. The ZnO-PES composite layer is expected to contain uniform ZnO crystals in the polymer matrix, i.e., the ZnO particles in the skin layer of the support are not easy to fall off. Under the induction of ZnO particles in the outer layers, continuous ZIF-8 membranes can be prepared by single in-situ crystallization, showing good adhesion to the supports. The obtained ZIF-8 membranes show a H_(2) permeance of 8.7 × 10^(-8)mol·m^(-2)·s^(-1)·Pa^(-1) with a H_(2)/N_(2) ideal separation selectivity of 18.0. The design and preparation of this dual-layer polymer support is expected to promote the large-scale application of MOF membranes on polymer supports.
文摘BACKGROUND Osteochondroma is one of the most common benign bone tumors,and it may cause bone and joint deformities and limited range of motion of an adjacent joint.The pes anserinus region is one of the most frequent sites of osteochondroma,but knee locking caused by osteochondromas in the pes anserinus region is extremely rare.CASE SUMMARY We describe a 13-year-old Japanese girl’s extra-articular knee locking that occurred when the semitendinosus tendon got caught in osteochondroma that had developed in the pes anserinus region.The osteochondroma was surgically resected.The postoperative outcome has been excellent,with no recurrence of knee locking or tumor one-year post-surgery.CONCLUSION When a young person develops knee locking,the possibility of extra-articular as well as intra-articular locking should be considered.Osteochondroma,one of the causes of extra-articular locking,can be treated with surgery with good postoperative results.
文摘为进一步推动女性科技工作者的影响力与贡献力,时值世界第114个国际劳动妇女节到来之际,IEEE PES WIP(IEEE PES Women in Power)联合《高电压技术》《高压电器》《湖北电力》,面向广大IEEE PES WIP会员征集关于“IEEE PES CHINA WIP高电压工程与新技术”专题的高水平科技论文。本专题拟于2024年下半年刊发,真诚欢迎广大IEEE PES WIP中国区会员联合国内外专家学者以及国家级科研计划承担单位踊跃投稿!
基金supported by the Major State Basic Research Program of China (No.2009CB623404)National Natural Science Foundation of China (Nos.20736003,20676067)+1 种基金National High Technology Research and Development Program of China (No.2007AA06Z317)Foundation of Ministry of Education of China (No.20070003130).
文摘Ultrafiltration membranes were prepared using phenolphthalein polyarylethersulfone (PES-C),polyethersulfone (PES) and poly(phthalazinone ether sulfone ketone) (PPESK) as polymers and NMP,DMAc,DMF and DMSO as solvents by immersion precipitation via phase inversion.Experimental data of thermodynamic properties of the polymer solutions and kinetic process of membrane formation were reported.For polymer solutions with good solvents,the sequence of the viscous flow activation energy (E_η) was coincident with tha...
