Reactive distillation and dividing wall column distillation are two kinds of effective separation technologies,and their integrated configuration,reactive dividing wall column(RDWC),presents attractive advantages.In t...Reactive distillation and dividing wall column distillation are two kinds of effective separation technologies,and their integrated configuration,reactive dividing wall column(RDWC),presents attractive advantages.In this study,the rigorous simulation of RDWC for methyl acetate hydrolysis is performed,and sensitivity analysis is conducted to obtain the minimum reboiler duty.Then a comparison is made between the conventional process and RDWC process,and it shows that 20.1% energy savings can be achieved by RDWC process.In addition,the dynamic characteristic of RDWC is studied and an effective control strategy is proposed.The simple PI control scheme with three temperature loops can obtain reasonable control performance and maintain products at desired purities.It is proved that this RDWC process is an energy efficiency alternative with good controllability.展开更多
Objective Liver cancer is the 4th leading cause of cancer death worldwide,and hepatocellular carcinoma(HCC)accounts for the largest proportion of these deaths.Berberine is a quaternary amine compound extracted from pl...Objective Liver cancer is the 4th leading cause of cancer death worldwide,and hepatocellular carcinoma(HCC)accounts for the largest proportion of these deaths.Berberine is a quaternary amine compound extracted from plants such as Coptidis Rhizoma(Huang Lian,黄连)and Phellodendri Chinensis Cortex(Huang Bo,黄柏)and is considered as a potential candidate for treating HCC.This study used network pharmacology methods,reveal the core mechanism of action of berberine in the treatment of HCC,clarify its medicinal value,and locate the anti-tumor mechanism of berberine.Methods Structural information of Berberine(PubChem CID:2353)was obtained from the NCBI PubChem;ADME parameter were obtained from the Traditional Chinese Medicine Systems Pharmacology(TCMSP)database;Berberine prediction targets were collected from symmap,stitch and targetnet databases;HCC significant targets were retrieved from OncoDB.HCC and Liverome;A PPI network was established at STRING,Prediction target of berberine therapy for HCC are collected by gene mapping;The core target,pathway,biological process(BP),cellular component(CC),and molecular function(MF)of berberine in the treatment of HCC were predicted by topological analysis and enrichment analysis;the visualized"target pathway"network diagram of berberine in the treatment of HCC was established by the software of Cytoscape.Results Through PubChem and tcmsp databases,the good drugforming properties of berberine were identified;32 prediction targets of berberine were collected in symmap,stitch and targetnet databases;566 related targets of HCC were collected in oncodb.hcc and liverome databases;10 targets of berberine treatment for HCC were predicted by gene mapping,and a PPI with 10 nodes and 34 edges was established Through topological analysis and enrichment analysis,6 topologically important targets,6 related pathways and 16 BP,6 cc and 7 MF involved in Berberine treatment of HCC were obtained.Conclusions The anticancer effect of berberine is mainly involved in the regulation of cells of hepatoma cells through complex interactions between the TB52,MAPK1,CCND1,PTGS2,ESR1 that act on Hub nodes and their associated 6 pathways.The cycle is related to the immune inflammatory response,including biological processes such as proliferation and apoptosis of liver cancer cells.展开更多
基金Supported by the National Natural Science Foundation of China(No.21276279No.21476261)+1 种基金the Fundamental Research Funds for the Central Universities(No.14CX05030ANo.15CX06042A)
文摘Reactive distillation and dividing wall column distillation are two kinds of effective separation technologies,and their integrated configuration,reactive dividing wall column(RDWC),presents attractive advantages.In this study,the rigorous simulation of RDWC for methyl acetate hydrolysis is performed,and sensitivity analysis is conducted to obtain the minimum reboiler duty.Then a comparison is made between the conventional process and RDWC process,and it shows that 20.1% energy savings can be achieved by RDWC process.In addition,the dynamic characteristic of RDWC is studied and an effective control strategy is proposed.The simple PI control scheme with three temperature loops can obtain reasonable control performance and maintain products at desired purities.It is proved that this RDWC process is an energy efficiency alternative with good controllability.
基金funding support from the General Program of National Natural Science Foundation of China (No. 81774122)College Level Project of Beijing University of Chinese Medicine (No. 2019-JYB-XS002)
文摘Objective Liver cancer is the 4th leading cause of cancer death worldwide,and hepatocellular carcinoma(HCC)accounts for the largest proportion of these deaths.Berberine is a quaternary amine compound extracted from plants such as Coptidis Rhizoma(Huang Lian,黄连)and Phellodendri Chinensis Cortex(Huang Bo,黄柏)and is considered as a potential candidate for treating HCC.This study used network pharmacology methods,reveal the core mechanism of action of berberine in the treatment of HCC,clarify its medicinal value,and locate the anti-tumor mechanism of berberine.Methods Structural information of Berberine(PubChem CID:2353)was obtained from the NCBI PubChem;ADME parameter were obtained from the Traditional Chinese Medicine Systems Pharmacology(TCMSP)database;Berberine prediction targets were collected from symmap,stitch and targetnet databases;HCC significant targets were retrieved from OncoDB.HCC and Liverome;A PPI network was established at STRING,Prediction target of berberine therapy for HCC are collected by gene mapping;The core target,pathway,biological process(BP),cellular component(CC),and molecular function(MF)of berberine in the treatment of HCC were predicted by topological analysis and enrichment analysis;the visualized"target pathway"network diagram of berberine in the treatment of HCC was established by the software of Cytoscape.Results Through PubChem and tcmsp databases,the good drugforming properties of berberine were identified;32 prediction targets of berberine were collected in symmap,stitch and targetnet databases;566 related targets of HCC were collected in oncodb.hcc and liverome databases;10 targets of berberine treatment for HCC were predicted by gene mapping,and a PPI with 10 nodes and 34 edges was established Through topological analysis and enrichment analysis,6 topologically important targets,6 related pathways and 16 BP,6 cc and 7 MF involved in Berberine treatment of HCC were obtained.Conclusions The anticancer effect of berberine is mainly involved in the regulation of cells of hepatoma cells through complex interactions between the TB52,MAPK1,CCND1,PTGS2,ESR1 that act on Hub nodes and their associated 6 pathways.The cycle is related to the immune inflammatory response,including biological processes such as proliferation and apoptosis of liver cancer cells.
