微生物生物量碳测定方法 (1)试剂配制: 0.5MK2SO4溶液:称取K2SO4174.33g溶解于蒸馏水中,搅拌溶解,(可加热)定容 至2L 去乙醇氯仿的配制:在通风柜中,量取100毫升氯仿至500毫升的分液漏斗中,加 入200毫升的蒸馏水,加塞,上下振荡10下,打开塞子放气,而后加塞再振荡10下, 反复3次,将分液漏斗置于铁架台上,静止溶液分层,打开分液漏斗下端的阀,将下层 溶液(氯仿)放入200毫升的烧杯中,将剩余的溶液倒入水槽,用自来水冲洗。再将烧 杯中的氯仿倒入分液漏斗中,反复3次

CONTENTS BRIEF HISTORY PROTOCOLS AND STANDARDS STANDARDS ORGANIZATIONS INTERNET STANDARDS INTERNET ADMINISTRATION CSIE, NTUT, TAIWAN

CONTENTS TCP SERVICES NUMBERING BYTES FLOW CONTROL SILLY WINDOW SYNDROME ERROR CONTROL TCP TIMERS CONGESTION CONTROL SEGMENT OPTIONS CHECKSUM

Introduction Loosely specified protocol software interface Interface functionality Conceptual interface specification · System calls Two basic approaches to network communication Basic I/ functions in Linux

Introduction Single thread for multiple transport protocols Motivation Server design and process structure An iterative example Concurrent multiprotocol servers

Conceptual Server Algorithm Simple Server Algorithm Create a socket Bind the socket to the port Enter an infinite loop Accept request Process request Reply request Not enough in practice generally

Multiple Threads Master thread for connection requests Slave threads for handling communication with clients Thread of execution: an abstraction of independent computation Single process can contain one or more threads CSIE, NTUT, Taiwan

CONTENTS THE OSI MODEL LAYERS IN THE OSI MODEL TCPIP PROTOCOL SUITE ADDRESSING Tcp/IP VERSIONS CSIE, NTUT, TAIWAN

CONTENTS CONNECTIONS COMMUNICATION COMMAND PROCESSING FILE TRANSFER SIMPLE FTP Assignment

Introduction X Focuses on the structure of programs that use RPC, and shows how program can be divided along procedure boundaries Introduces the stub procedure concept and a program generator tool that automates much of the code generation associated with ONC RPC