A new form of Cu2O, disk-like structure with 60 nm in thickness and 2 μm in diameter,has been successfully synthesized in bulk quantities by polyol process in the presence of PVP K-30.
For each positive integer k,the radix representation of the complex numbers in the base -k+i gives rise to a lattice self-affine tile T_k in the plane,which consists of all the complex numbers that can be expressed in...For each positive integer k,the radix representation of the complex numbers in the base -k+i gives rise to a lattice self-affine tile T_k in the plane,which consists of all the complex numbers that can be expressed in the form∑_(j≥1)d_j(-k+i)^(-j),where d_j∈{0,1,2,...,k^2}.We prove that T_k is homeomorphic to the closed unit disk{z∈C:|z|≤1}if and only if k≠2.展开更多
[目的]探讨hIGF-1基因在退变椎间盘中的表达。[方法]参考文献制备出椎间盘退变（intervertebral disk degeneration，IVDD）动物模型24只，随机分为Ad／CMV—hIGF-1、hIGF-1生长因子及PBS组，每组有新西兰大白兔8只。L4,5、L5,6椎间盘...[目的]探讨hIGF-1基因在退变椎间盘中的表达。[方法]参考文献制备出椎间盘退变（intervertebral disk degeneration，IVDD）动物模型24只，随机分为Ad／CMV—hIGF-1、hIGF-1生长因子及PBS组，每组有新西兰大白兔8只。L4,5、L5,6椎间盘中分别注射第2代Ad／CMV—hIGF-1（8×10^8PFU）、hIGF-1生长因子（100μg／L）、PBS25μL。注射后1、2、4、8周，Western blot检测椎间盘中hIGF-1蛋白表达。[结果]hIGF-1蛋白带出现在7539．96μ。Ad／CMV—hIGF-1、hIGF-1蛋白表达持续达4周以上，hIGF-1组表达持续约2周；PBS注射组无hIGF-1蛋白表达。[结论]hIGF-1基因能够在退变椎间盘中表达；hIGF-1基因转染表达的持续时间长于单纯hIGF-1生长因子直接注射。展开更多
Concise chemistry leads to a family of heptanuclear Co^(Ⅱ)-clusters,[Co_(7)(N_(3))_(12)(CH_(3)CN)_(12)][Y_(2)(NO_(3))_(4)(piv)_(4)]·2CH_(3)CN(DC1)(pivH=pivalic acid),[Co_(7)(N_(3))_(12)(CH_(3)CN)_(10)(NO_(3))_(0...Concise chemistry leads to a family of heptanuclear Co^(Ⅱ)-clusters,[Co_(7)(N_(3))_(12)(CH_(3)CN)_(12)][Y_(2)(NO_(3))_(4)(piv)_(4)]·2CH_(3)CN(DC1)(pivH=pivalic acid),[Co_(7)(N_(3))_(12)(CH_(3)CN)_(10)(NO_(3))_(0.4)(Cl)_(1.6)]·4CH_(3)CN(DC2)and[Co_(7)(N_(3))_(12)(CH_(3)CN)_(10)(NO_(3))_(2)]·4CH_(3)CN(DC3),in which the metal ions are exclusively bridged by end-on azido ligands to stabilize a beautiful disk-like topology.The resulting clusters exhibit interesting structural transformations and thermodynamically-distinct steady states verified by theoretical calcula-tions.Magnetic studies reveal the first observation of zero-field SMM behaviour in disk-like heptanuclear Co^(Ⅱ)complexes.展开更多
基金This work was supported by the National Natural Science Foundation of ChinaNatural Science Foundation of Qinghai Province.
文摘A new form of Cu2O, disk-like structure with 60 nm in thickness and 2 μm in diameter,has been successfully synthesized in bulk quantities by polyol process in the presence of PVP K-30.
基金The first author is supported by Youth Project of Tianyuan Foundation(10226031)zhongshan University Promotion Foundation for Young Teachers (34100-1131206)+1 种基金the second author is supported by National science Foundation(10041005)Guangdong Provic
文摘For each positive integer k,the radix representation of the complex numbers in the base -k+i gives rise to a lattice self-affine tile T_k in the plane,which consists of all the complex numbers that can be expressed in the form∑_(j≥1)d_j(-k+i)^(-j),where d_j∈{0,1,2,...,k^2}.We prove that T_k is homeomorphic to the closed unit disk{z∈C:|z|≤1}if and only if k≠2.
文摘[目的]探讨hIGF-1基因在退变椎间盘中的表达。[方法]参考文献制备出椎间盘退变（intervertebral disk degeneration，IVDD）动物模型24只，随机分为Ad／CMV—hIGF-1、hIGF-1生长因子及PBS组，每组有新西兰大白兔8只。L4,5、L5,6椎间盘中分别注射第2代Ad／CMV—hIGF-1（8×10^8PFU）、hIGF-1生长因子（100μg／L）、PBS25μL。注射后1、2、4、8周，Western blot检测椎间盘中hIGF-1蛋白表达。[结果]hIGF-1蛋白带出现在7539．96μ。Ad／CMV—hIGF-1、hIGF-1蛋白表达持续达4周以上，hIGF-1组表达持续约2周；PBS注射组无hIGF-1蛋白表达。[结论]hIGF-1基因能够在退变椎间盘中表达；hIGF-1基因转染表达的持续时间长于单纯hIGF-1生长因子直接注射。
基金supported by the National Natural Science Foundation of China(NSFC,Nos.21863009,22063008)the Natural Science Foundation of Ningxia Province(Nos.2023AAC03014,2023AAC03227,2021AAC03136,2021BEB04062)+1 种基金the Young Top-notch Talent Cultivation Program of Ningxia Province,the Discipline Project of Ningxia(No.NXYLXK2017A04)the China Postdoctoral Science Foundation(No.2022M723148).
文摘Concise chemistry leads to a family of heptanuclear Co^(Ⅱ)-clusters,[Co_(7)(N_(3))_(12)(CH_(3)CN)_(12)][Y_(2)(NO_(3))_(4)(piv)_(4)]·2CH_(3)CN(DC1)(pivH=pivalic acid),[Co_(7)(N_(3))_(12)(CH_(3)CN)_(10)(NO_(3))_(0.4)(Cl)_(1.6)]·4CH_(3)CN(DC2)and[Co_(7)(N_(3))_(12)(CH_(3)CN)_(10)(NO_(3))_(2)]·4CH_(3)CN(DC3),in which the metal ions are exclusively bridged by end-on azido ligands to stabilize a beautiful disk-like topology.The resulting clusters exhibit interesting structural transformations and thermodynamically-distinct steady states verified by theoretical calcula-tions.Magnetic studies reveal the first observation of zero-field SMM behaviour in disk-like heptanuclear Co^(Ⅱ)complexes.
