This paper aims to propose a topology optimization method on generating porous structures comprising multiple materials.The mathematical optimization formulation is established under the constraints of individual volu...This paper aims to propose a topology optimization method on generating porous structures comprising multiple materials.The mathematical optimization formulation is established under the constraints of individual volume fraction of constituent phase or total mass,as well as the local volume fraction of all phases.The original optimization problem with numerous constraints is converted into a box-constrained optimization problem by incorporating all constraints to the augmented Lagrangian function,avoiding the parameter dependence in the conventional aggregation process.Furthermore,the local volume percentage can be precisely satisfied.The effects including the globalmass bound,the influence radius and local volume percentage on final designs are exploited through numerical examples.The numerical results also reveal that porous structures keep a balance between the bulk design and periodic design in terms of the resulting compliance.All results,including those for irregular structures andmultiple volume fraction constraints,demonstrate that the proposedmethod can provide an efficient solution for multiple material infill structures.展开更多
Nuclear encoded genes can cause early-onset mitochon-dria-related disorders such as Leigh or Leigh-like syndrome.Defects in DNAJC30 have been implicated in mitochondria-related diseases such as Leber’s hereditary opt...Nuclear encoded genes can cause early-onset mitochon-dria-related disorders such as Leigh or Leigh-like syndrome.Defects in DNAJC30 have been implicated in mitochondria-related diseases such as Leber’s hereditary optic neuropa-thy(LHON)and Williams syndrome(WS).However,the role of DNAJC30 in disease progression concerning mitochon-drial dysfunction has yet to be fully understood.Here we report a 12-year-old boy with acute dystonia onset at age 10.展开更多
基金This study is financially supported by StateKey Laboratory of Alternate Electrical Power System with Renewable Energy Sources(Grant No.LAPS22012).
文摘This paper aims to propose a topology optimization method on generating porous structures comprising multiple materials.The mathematical optimization formulation is established under the constraints of individual volume fraction of constituent phase or total mass,as well as the local volume fraction of all phases.The original optimization problem with numerous constraints is converted into a box-constrained optimization problem by incorporating all constraints to the augmented Lagrangian function,avoiding the parameter dependence in the conventional aggregation process.Furthermore,the local volume percentage can be precisely satisfied.The effects including the globalmass bound,the influence radius and local volume percentage on final designs are exploited through numerical examples.The numerical results also reveal that porous structures keep a balance between the bulk design and periodic design in terms of the resulting compliance.All results,including those for irregular structures andmultiple volume fraction constraints,demonstrate that the proposedmethod can provide an efficient solution for multiple material infill structures.
基金supported in part by the U.S.National Institutes of Health R01 grants(No.CA236399,CA243386,CA271497,DK124116)to J.C.,and the Simms/Mann Family Foundation to J.C.
文摘Nuclear encoded genes can cause early-onset mitochon-dria-related disorders such as Leigh or Leigh-like syndrome.Defects in DNAJC30 have been implicated in mitochondria-related diseases such as Leber’s hereditary optic neuropa-thy(LHON)and Williams syndrome(WS).However,the role of DNAJC30 in disease progression concerning mitochon-drial dysfunction has yet to be fully understood.Here we report a 12-year-old boy with acute dystonia onset at age 10.
