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73results about How to "Considerable amount" patented technology

Replaceable scheduling algorithm in multitasking kernel

Disclosed is providing one of a plurality of schedulers for a multitasking system for a processor that includes choosing a particular one of the schedulers, setting a program counter to an address corresponding to code of the particular one of the schedulers, and the processor executing code at an address corresponding to the program counter. Also included may be setting a stack pointer to an address corresponding to stack space for the particular one of the schedulers and the processor using the stack space at the stack pointer after executing code at the address corresponding to the program counter. The system described herein provides a small kernel that can run on a variety of hardware platforms, such as a PowerPC based Symmetrix adapter board used in a Symmetrix data storage device provided by EMC Corporation of Hopkinton, Ma. The core kernel code may be written for the general target platform, such as the PowerPC architecture. Since the PowerPC implementation specific modules are well defined, the system may be quite portable between PowerPC processors (such as the 8260 and 750), and should prove relatively easy to port to any PowerPC based Symmetrix adapter board/CPU combination. The kernel may also be ported to run on other RISC machines (Hitachi SH series) and can be ported to CISC architectures.
Owner:EMC IP HLDG CO LLC

Method for culturing human umbilical cord mesenchymal stem cells

The invention belongs to the technical field of cell culture and in particular relates to a method for culturing human umbilical cord mesenchymal stem cells. Aiming at the problems that conventional separated human umbilical cord mesenchymal stem cells have residual bovine serum, bovine-derived and swine-derived viruses, and the like, the invention provides the method for culturing the human umbilical cord mesenchymal stem cells. The method comprises the following steps: a, carrying out primary culture on human umbilical cord tissue with a serum-free medium till a P0 generation; b, carrying out subculture on cells of the P0 generation till a P2 generation in a culture dish; c, carrying out amplification culture on cells of the P2 generation till a fifth generation in a spinner bottle, thereby obtaining human umbilical cord mesenchymal stem cells after multiplication culture. By adopting the method provided by the invention, a serum-free culture mode is carried out in the whole process,artificially prepared cell factors and chemotactic factors are added, and the culture medium is low in sensitization and small in potential hazard factor; due to adoption of amplification culture inthe spinner bottle, the method has the advantages of rapid multiplication, short cycle, low cost, considerable multiplication cell number, and the like, thereby having wide clinical application prospects.
Owner:SICHUAN UNIV +1
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