Yongkang Weizhen Industry and Trade Co., Ltd.

Zhejiang University

Alipay (hangzhou) Information Technology Co., Ltd.

Xin Chen

Jinyun Fu

Jun Li

Kai Wang

Jiang Li

Yong He

Limin Qiu

Lanjuan Li

Tao Wei

Jian Feng Tan

Ti Wei Bie

An Qi Shen

Xiaoqin Zhi

Shiran Bao

The present invention discloses a hydrogen or helium throttling liquefaction system using direct current (DC) flow from the cold and hot ends of the regenerative cryocoolers, which belongs to the technical field of refrigeration and cryogenics. It includes a regenerative cryocooler module, a hot-end DC flow module, a cold-end DC flow module, a throttling liquefaction module, and a gas-phase circulation module. The modules are interconnected to form a closed loop for the flow of hydrogen or helium working fluid. DC flow is introduced from the cold and hot ends of the regenerative cryocooler through the DC flow pipelines and DC flow valves. The hot-end DC flow exchanges heat with the reflowing low-temperature working fluid and is cooled down. After that, it mixes with the cold-end DC flow and enters the throttling liquefaction module to generate liquid phase through throttling and liquefaction. After the liquid phase has output cooling capacity, it flows through the gas-phase circulation module and then enters the back-pressure chamber of the compressor to complete the cycle. Compared with the existing small-scale hydrogen and helium liquefaction technology using regenerative cryocoolers, the present invention has the advantages of simple structure, easy installation, high heat transfer efficiency and liquefaction efficiency of the system.

Hydrogen or helium throttling liquefaction system using direct current flow from the cold and hot ends of the regenerative cryocoolers

Plank abdominal wheel

Climbing machine

Implementations of the present specification provide a method and an apparatus for managing a TLB cache in a virtualization platform, where the virtualization platform runs a plurality of virtual machines, each virtual machine is allocated with a unique VPID, and all virtual logical processors in the virtual machine share the VPID; and a guest process running in the virtual machine is allocated with a PCID. An identifier field of a TLB entry in the TLB cache includes a VPID and a PCID. The method includes: in response to detecting a target guest process involving an invalid address mapping relationship, obtaining a current VPID and a current PCID corresponding to the target guest process; classifying the current PCID into an invalid PCID set corresponding to the current VPID, and selecting a PCID from an available PCID set of a target virtual machine as an updated PCID; and allocating the updated PCID to the target guest process, so an updated entry for the target guest process is recorded in a TLB cache, where an identifier field of the updated entry includes the updated PCID.

Methods and apparatuses for managing TLB cache in virtualization platform

Roller wheel

Combined dumbbell and base

A method of treating fulminant hepatic failure in a subject, includes administering a therapeutically effective amount of a pharmaceutical composition to the subject, wherein the pharmaceutical composition comprises a DLL4 cytokine. A method of treating liver failure, sub-acute liver failure, chronic liver failure or acute-on-chronic liver failure in a subject, includes administering an therapeutically effective amount of a DLL4 cytokine to the subject.

Method of treating fulminant hepatic failure using DLL4 cytokine

Growing community of inventors

Zhejiang, China

Xin Chen