Results 41 to 50 of about 777 (212)

Evaluation of Sulfide Removing Rate by Basic Zinc Carbonate in Oil Based Drilling Fluids and Analyses of Sulfide Removing Mechanisms

Zuanjingye yu wanjingye
Basic zinc carbonate is a commonly used sulfide scavenger for drilling high-sulfide content formations with water-based drilling fluids, its ability to remove sulfide and the mechanism of sulfide removal in oil-based drilling fluids are still not well ...
Zhen ZHANG, Da YIN, Guochuan QIN, Lin CHEN, Gui WANG   +4 more
doaj   +1 more source

Astrocytes Coordinate Neurovascular Coupling During Prolonged Sensory Demand via AQP4/TRPA1/BEST1/D‐Serine Signaling

Advanced Science, EarlyView.
Neuronal activation leads to astrocytic transient volume changes, activating transient receptor potential ankyrin 1 (TRPA1) channels, leading to Ca2+ influx. Activation of TRPA1 causes the release of D‐serine through BEST1. Finally, the augmented extracellular levels of D‐serine boost neuronal activity by binding GluN1‐containing NMDARs, leading to CBV
Kayoung Han, Minwoo Wendy Jang, Taeyoung Park, Ki Jung Kim, Victor James Drew, Sunpil Kim, Tai Young Kim, Mingu Gordon Park, Myeongju Kim, Seung Won Chung, Minah Suh, C. Justin Lee   +11 more
wiley   +1 more source

Retrospective Grid Cells in the Medial Entorhinal Cortex Encode Past Paths During Spatial Navigation

Advanced Science, EarlyView.
Retrospective grid cells are identified in the medial entorhinal cortex, with spatial firing patterns that become most grid‐like when activity is projected onto recently traversed locations. Their coding loses spatial precision in darkness and is disrupted during assisted movement, indicating that entorhinal representations incorporate recent path ...
Ruojin Liu, Xin Yuan, Zilong He, Hong Jin, Jiayi Tian, Cong Chen, Yuanjing Liu, Xiang Zhang, Shidan Wen, Emilio Kropff, Chenglin Miao   +10 more
wiley   +1 more source

Oil-Based Drilling Fluid Plugging Method for Strengthening Wellbore Stability of Shale Gas

Geofluids, 2021
Finding out the reasons for wellbore instability in the Longmaxi Formation and Wufeng Formation and putting forward drilling fluid technical countermeasures to strengthen and stabilize the wellbore are very crucial to horizontal drilling.
Pengcheng Wu, Chengxu Zhong, Zhengtao Li, Zhen Zhang, Zhiyuan Wang, Weian Huang   +5 more
doaj   +1 more source

Mitochondrial Protection and Neural Repair via ROS‐Responsive Biomimetic Nanoparticles in Intracerebral Hemorrhage

Advanced Science, EarlyView.
A ROS‐responsive biomimetic nanoparticle platform co‐delivers DIDS and Mdivi‐1 to protect mitochondria and promote neural repair after intracerebral hemorrhage. By targeting LPAR1/VDAC1‐related mitochondrial dysfunction, the nanotherapy reduces oxidative injury, neuronal apoptosis, and blood‐brain barrier disruption, improving neurological recovery and
Ling Gao, Li Peng, Xiaobin Zheng, Cong Tan, Chuang Wang, Qijiang Xiong, Weiming Chen, Zhao Yang   +7 more
wiley   +1 more source

Oil-Based Drilling Fluid Technology for Ultra-Deep Extended Reach Wells in East China Sea

Zuanjingye yu wanjingye
Difficulties such as borehole wall instability, poor hole cleaning, drag encountered frequently during tripping due to high friction and torque, and difficult reaming, have been encountered in drilling operation in the Baoyunting block and the Pinghu ...
Yunhu SHE
doaj   +1 more source

Phosphonium Ionic Liquids for Electrochemical Energy Storage: Structure–Property–Interphase Relationships and Design Rule

Advanced Science, EarlyView.
Phosphonium ionic liquids offer a versatile platform for safer and more durable energy storage. This Review connects cation–anion structure with solvation, ion transport, electrochemical stability, and interphase formation across diverse battery chemistries.
Amir Haghipour, Ishanka Thennakoon, Aishwaryaba Jadeja, Daniel Rauber, Markus Gallei, Rolf Hempelmann, Sangwon Kim, Jungtae Kim   +7 more
wiley   +1 more source

Calibration Method for Mud Logging Parameters Contaminated by Oil-Based Drilling Fluid and Its Application in Fengping Area

Cejing jishu
With the advancement of oil and gas exploration into unconventional and concealed reservoirs, the widespread application of highly deviated and horizontal wells has led to the effective resolution of drilling challenges in complex formations by oil-based
Duan Shengqiang, Duan Hongzhen, Zhang Lianliang, Liu hui, Fu Xin, Li Huiguang   +5 more
doaj   +1 more source

Effect of Additives on Rheological Properties and Fluid Loss of Oil Based Drilling Fluids

Annual Transactions of the Nordic Rheology Society
Oil-based drilling fluids are often used to drill geothermal or petroleum wells in hot locations. These fluids normally consist of dispersion of organophilic clays in water-in-oil emulsions. If loss of fluid to the formation is expected, fibres or other additives for fluid loss prevention are added.
Feneuil, Blandine Fleur Prudence, Ytrehus, Jan David, Saasen, Arild   +2 more
openaire   +2 more sources

Development‐Informed Microsphere Assemblies Enable Spatiotemporally Programmed Bone–Vascular Organoid‐Like Constructs for Large Bone Defect Repair

Advanced Science, EarlyView.
Single‐cell‐guided prioritization of BMP4 and VEGFA is combined with temporally programmed BMSCs and a Matrigel‐free GelMA/PEO/bioactive‐glass assembled‐microsphere matrix to generate bone–vascular organoid‐like constructs. The platform coordinates osteogenic differentiation, endothelial activation, vascular‐like microchannel formation, and ...
Renhao Ni, Xinyi Shi, Tong Zhu, Guanrong Li, Lei Chang, Shengtao Li, Jingyi Chi, Chen Shi, Zeming Hu, Rong Xu, Yingchun Zhu, Yang Luo, Yichen Chen, Fan Yang, Yabin Zhu   +14 more
wiley   +1 more source