long-period seismograph

Methods for Realizing Long-term and Effective Operation of FCCU;

實現重油催化裂化裝置長周期高效益運行的途徑

The measures for long-term operation of the revamped crude distillation unit in processing high-acidity crude oil in Liaohe Petrochemical Company of PetroChina Co.

介紹了中國石油天然氣股份有限公司遼河石化分公司改造后的南蒸餾裝置,在加工高酸值原油期間裝置達到長周期運行方面采取的措施,主要包括初步設計、材質選用、施工質量、開工前準備、設備管理、精心操作、新技術應用、環境保障和瓶頸問題的處理等,為其它裝置加工高酸原油運行提供了經驗。

It analyzes key factors that affect long-term running of acrylonitrile production unit and sets forth the rele vant countermea-sure that achieved remarkable result after application in practical production and devoted positive popularization as well as applica-tion value for supervising long-term running of same type of production unit.

分析了影響丙烯腈裝置長周期運行的關鍵因素,提出了相應的對策,并應用于生產實踐之中,取得了顯著的效果,對于指導同類型裝置長周期運行有著積極的推廣和應用價值。

Changes of hair papilla and its role in the growth cycle of the hair follicles;

毛乳頭在毛囊生長周期中的變化和作用

The changes in the content of both substrate-glucose and ammonium sulfate,pH and flocculation activity and output of compound microbial flocculant in different periods of growth cycle compound bioflocculant producingbacterium were studied.

結果表明,在整個生長周期中,pH值基本不變;碳氮源變化顯著,并存在相關性;進入穩定期后,60h時,絮凝活性達到最大值97。

Plant cell divides only when inoculated mass is higher than a critical density,and the latter is directly related to cell growth cycle and cell multiplication times.

起始培養的細胞濃度直接影響細胞的生長周期增殖倍數。