Results 41 to 50 of about 9,776 (183)

Enhancing CHO cell recombinant protein production using a perfusion‐directed host evolution approach

Biotechnology Progress, EarlyView.
Abstract Clonally derived cell lines generated from Chinese hamster ovary (CHO) cells encounter numerous stressors when cultured in high‐intensity perfusion bioreactors leading to poor process performance. To circumvent this, the ability of CHO cells to adapt to different culture environments was exploited. Here host cells were selected in the presence
Peter Amaya, Rajesh K. Mistry, Susie Sou, Sonja Hess, Bijay Khanal, Zayla Schaeffer, Jie Zhu, Lina Chakrabarti   +7 more
wiley   +1 more source

Characteristics of viscosity-reducer foam flooding in deep low-permeability heavy oil reservoirs

Youqi dizhi yu caishoulu
Viscosity-reducer foam flooding combines the advantages of emulsification of viscosity-reducers and selective blocking of foam to further enhance oil recovery in deep low-permeability heavy oil reservoirs during the later development stages. The suitable
DANG Faqiang, LI Songyan, LI Minghe, HE Xiaolin, LI Zhaomin   +4 more
doaj   +1 more source

Wettability Alteration of Sandstone and Carbonate Rocks by Using ZnO Nanoparticles in Heavy Oil Reservoirs [PDF]

Iranian Journal of Oil & Gas Science and Technology, 2015
Efforts to enhance oil recovery through wettability alteration by nanoparticles have been attracted in recent years. However, many basic questions have been ambiguous up until now.
Masoumeh Tajmiri, Seyed Mousa Mousavi, Mohammad Reza Ehsani, Emad Roayaei, Ali Emadi   +4 more
doaj   +1 more source

Defect‐Anchored Iridium Single Atoms on Palladium Metallenes for Synergistically Enhanced Ethanol Oxidation Reaction

ChemistryEurope, EarlyView.
This work presents a defect‐site activation strategy, in which anchoring Ir single atoms onto the highly strained defects of Pd metallene generates synergistic PdIr sites, leading to a dramatic enhancement in the ethanol oxidation reaction. The development of highly efficient electrocatalysts for the ethanol oxidation reaction (EOR) is critical to the
Wenbo Li, Mengyue Gao, Zhen Jiang, Cheng Han, Yanyan Jia, Kuan‐Wen Wang, Sheng Dai   +6 more
wiley   +1 more source

Study on Compatibility of Polymer Hydrodynamic Size and Pore Throat Size for Honggang Reservoir

International Journal of Polymer Science, 2014
Long core flow experiment was conducted to study problems like excessive injection pressure and effective lag of oil wells during the polymer flooding in Honggang reservoir in Jilin oilfield.
Dan-Dan Yin, Yi-Qiang Li, Bingchun Chen, Hui Zhang, Bin Liu, Qingle Chang, Yanyue Li   +6 more
doaj   +1 more source

The research progress in the alkali-free surfactant-polymer combination flooding technique

Petroleum Exploration and Development, 2012
Alkali-free surfactant-polymer SP flooding can avoid scaling, strong emulsification and corrosion caused by alkali, thus reduce the investment and operating cost.
Youyi ZHU, Yi ZHANG, Jialing NIU, Weidong LIU, Qingfeng HOU   +4 more
doaj   +1 more source

Interfacial adsorption characteristics of surfactant‐modified nanoparticles: Equilibrium and dynamic effects of salinity at the oil–water interface

The Canadian Journal of Chemical Engineering, EarlyView.
Surfactant‐modified nanoparticles adsorb at the oil–water interface, enabling interfacial stabilization and microemulsion formation. Abstract This study systematically investigated the interfacial behaviour of silicon dioxide (SiO2) and aluminium oxide (Al2O3) nanoparticles (NPs) functionalized with cationic (CTAB), anionic (SDS), and nonionic (Triton ...
Behrooz Ahmadi, Eghbal Sahraei, Amir H. Mohammadi   +2 more
wiley   +1 more source

Synthesis and characterization of a highly hydrophilic nanocomposite for wettability alteration, water/oil interfacial tension reduction, and enhanced oil recovery

The Canadian Journal of Chemical Engineering, EarlyView.
Mechanism of wettability alteration, interfacial tension reduction, and oil recovery by novel nanocomposite. Abstract The development of stable nanofluids (NFs) for enhanced oil recovery (EOR) relies on optimizing interactions between reservoir rocks and fluids.
Ehsan Jafarbeigi, Ehsan Kamari, Amir H. Mohammadi   +2 more
wiley   +1 more source

WSPLK: A systematic approach to the thermodynamic characterization of light and heavy Mexican crude oil

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract A streamlined characterization framework (WSPLK) is presented for modelling complex reservoir fluids using cubic equations of state. The key methodological contribution is the introduction of a single global parameter ε directly into Pedersen's boiling‐point correlation, restoring pure‐component calibration and eliminating the need for ...
Angélica Merlo‐Robredo, Heber Barragán‐Mayet, Lourdes Mayet‐Cruz, José Fernando Barragán‐Aroche   +3 more
wiley   +1 more source

Cross-cultural study of intensifiers in face-threatening situations: A gender perspective in English and Bahasa Indonesia [PDF]

Training, Language and Culture
Intensifiers play a crucial role in everyday communication, varying in frequency, function, and socio-pragmatic significance across languages. However, gender-based variation in their use remains underexplored. This study examines intensifier usage among
Adrefiza Adrefiza, Jeremy Jones, Urip Sulistiyo   +2 more
doaj   +1 more source