The dispersion of nanoparticles plays a key role in enhancing the mechanical performance of polymer nanocomposites.In this work,one hybrid epoxy nanocomposite reinforced by a well dispersed,zinc oxide functionalized,m...The dispersion of nanoparticles plays a key role in enhancing the mechanical performance of polymer nanocomposites.In this work,one hybrid epoxy nanocomposite reinforced by a well dispersed,zinc oxide functionalized,multi-wall carbon nanotube (Zn O-MWCNT) and core-shell rubber (CSR) was prepared,which possesses both high modulus and fracture toughness while maintaining relatively high glass transition temperature (Tg).The improved fracture toughness from 0.82 MPa mfor neat epoxy to 1.46 MPa mfor the ternary epoxy nanocomposites is resulted from a series of synergistic toughening mechanisms,including cavitation of CSR-induced matrix shear banding,along with the fracture of MWCNTs and crack deflection.The implication of the present study for the preparation of high-performance polymer nanocomposites is discussed.展开更多
Migraine is a common primary headache which seriously affects the quality of patients’life due to the high prevalence and disability rate.Recent years a large number of studies have found that temperature is directly...Migraine is a common primary headache which seriously affects the quality of patients’life due to the high prevalence and disability rate.Recent years a large number of studies have found that temperature is directly bound to migraine and migraine patients in cold regions have higher prevalence,different manifestations and poor response to the conventional therapy.We propose in this review article a new concept of migraine in cold regions on the basis of geography and summarize the research advances on the pathogenesis of migraine in cold regions to provide conceptual basis for the clinical diagnosis and treatment of this disease entity.展开更多
A novel coordination polymer,formulated as Zn_(6)(TIB)_(4)(BPTC)_(3)(DMA)_(4)(H_(2)O)_(10)[TIB=1,3,5-tris(1-imidazolyl)-benzene,H_(4)BPTC=3,3',5,5'-biphenyltetracarboxylate],has been synthesized and structural...A novel coordination polymer,formulated as Zn_(6)(TIB)_(4)(BPTC)_(3)(DMA)_(4)(H_(2)O)_(10)[TIB=1,3,5-tris(1-imidazolyl)-benzene,H_(4)BPTC=3,3',5,5'-biphenyltetracarboxylate],has been synthesized and structurally characterized.Further investigations reveal that it presents a new topology(topological symbol{6^(2).8^(4)}{6^(3)}4{6^(5).8}6{6^(6)}2)based on self-penetration,and shows interesting fluorescent properties.展开更多
基金the KANEKA Corporation for their financial support。
文摘The dispersion of nanoparticles plays a key role in enhancing the mechanical performance of polymer nanocomposites.In this work,one hybrid epoxy nanocomposite reinforced by a well dispersed,zinc oxide functionalized,multi-wall carbon nanotube (Zn O-MWCNT) and core-shell rubber (CSR) was prepared,which possesses both high modulus and fracture toughness while maintaining relatively high glass transition temperature (Tg).The improved fracture toughness from 0.82 MPa mfor neat epoxy to 1.46 MPa mfor the ternary epoxy nanocomposites is resulted from a series of synergistic toughening mechanisms,including cavitation of CSR-induced matrix shear banding,along with the fracture of MWCNTs and crack deflection.The implication of the present study for the preparation of high-performance polymer nanocomposites is discussed.
基金General Program of National Natural Science Foundation of China(82071549)Key Program of Natural Science Foundation of Heilongjiang Province(ZD2019H006)Key Program of Planning Subject for the 13th Five-Year Plan of Heilongjiang Province Education Sciences(GJB1319086).
文摘Migraine is a common primary headache which seriously affects the quality of patients’life due to the high prevalence and disability rate.Recent years a large number of studies have found that temperature is directly bound to migraine and migraine patients in cold regions have higher prevalence,different manifestations and poor response to the conventional therapy.We propose in this review article a new concept of migraine in cold regions on the basis of geography and summarize the research advances on the pathogenesis of migraine in cold regions to provide conceptual basis for the clinical diagnosis and treatment of this disease entity.
基金We are thankful for financial support from the 973 Program(Nos.2014CB932101,2013CB933200)the National Natural Science Foundation of China(Nos.21471148,21141006)the Natural Science Foundation of Fujian Province(No.2011J05038).
文摘A novel coordination polymer,formulated as Zn_(6)(TIB)_(4)(BPTC)_(3)(DMA)_(4)(H_(2)O)_(10)[TIB=1,3,5-tris(1-imidazolyl)-benzene,H_(4)BPTC=3,3',5,5'-biphenyltetracarboxylate],has been synthesized and structurally characterized.Further investigations reveal that it presents a new topology(topological symbol{6^(2).8^(4)}{6^(3)}4{6^(5).8}6{6^(6)}2)based on self-penetration,and shows interesting fluorescent properties.
