Results 141 to 150 of about 4,389,832 (297)

Robotics in Ionizing Radiation Environments: Vulnerabilities, Hardening, and Future Directions

Advanced Robotics Research, EarlyView.
Radiation exposure causes cumulative degradation in robotic sensors, actuators, and electronic logic, often leading to undetected failures. This study maps component vulnerabilities, evaluates hardening and shielding strategies, and identifies testing gaps that must be addressed to enable next‐generation radiation‐tolerant robotic systems.
Francis A. K. Djirackor, Josephine T. Djirackor, Amanuel Abrdo Tereda, Sun Yi, Younho Seong   +4 more
wiley   +1 more source

Ultra-High Temperature Suspension Stabilizer HPAS for Oil-Based Drilling and Completion Fluids and Its Working Mechanism

Zuanjingye yu wanjingye
Oil-based drilling and completion fluids presently in use have poor suspension stability at high temperatures up to 240℃ or higher. To deal with this problem, a strongly hydrophobic suspension stabilizer HPAS was developed based on the principle of ...
Yahao KOU, Xiaoxiao NI, Jianhua WANG, Jiaqi ZHANG, Da YIN, Jun CHI   +5 more
doaj   +1 more source

Mitochondria and Neuromast Tagging With Fluorescent Gallium‐Triapine Analogues: In Cellulo MP FLIM and Zebrafish Live Imaging

Advanced Science, EarlyView.
Fluorescent BODIPY‐conjugated thiosemicarbazone ligands and their Ga(III), In(III), and Fe(III) complexes, inspired by Triapine, are developed as theranostic agents. Multiphoton FLIM and confocal microscopy in cancer cells and zebrafish reveal real‐time uptake, mitochondrial localisation, and whilst spectroscopic assays indicated preserved complex ...
Megan J. Green, Michael W. Jones, Merissa Saleem, Haobo Ge, Melita Tvardauskaite, Julia Dudzic, Fernando Cortezon‐Tamarit, Rory L. Arrowsmith, Charareh Pourzand, Gabriele Kociock‐Kohn, Nicholas H. Rees, Jonathan R. Dilworth, Stephen Faulkner, Stanley W. Botchway, David Gurevich, Sofia I. Pascu   +15 more
wiley   +1 more source

Drilling fluid for drilling permafrost rocks

Bulletin of the Tomsk Polytechnic University Geo Assets Engineering
Relevance. The article provides an overview of the problem of drilling wells for oil and gas in conditions of permafrost. When constructing wells for various purposes in conditions of permafrost rocks, special requirements are imposed on the selection of the optimal drilling fluid.
Alexander Ya. Tretyak, Andrey A. Chumakov, Kirill V. Krivosheev   +2 more
openaire   +2 more sources

Gas Influx into Drilling Fluids During Flow Check Operations as Affected by Gas Absorption Characteristics of the Drilling Fluid

, 2017
The paper addresses the gas loading characteristics of the drilling fluid and its influence of the gas influx rate during the flow check operation. In particular, the resulting fluid expansion in the wellbore annulus and the capability to detect gas kick
Harald Linga, Jan Ole Skogestad, Arild Saasen, Knut Steinar Bjørkevoll   +3 more
core   +1 more source

Pre‐Regenerative Endothelial Cells Empowered by Antler Blood Exosomes Orchestrate Peripheral Nerve Repair

Advanced Science, EarlyView.
The pre‐regenerative vascular niche (PVN) is essential for nerve repair, yet its endothelial blueprint remains unclear. We identified angiogenic ECs (AECs) as the dominant pre‐regenerative subset and found that antler blood–derived exosomes (AB‐EXO) promote repair via IMP3.
Jinsheng Huang, Qiang Chen, Aihua Jin, Xiaoqi Yang, Hui Zhou, Weiquan Gong, Jin Cheng, Jun Dai, Minjin Wang, Meihua Piao, Yuanyi Wang, Nan Zhou   +11 more
wiley   +1 more source

Drilling fluid for deep water drilling.

Journal of the Japanese Association for Petroleum Technology, 2003
In recent year, deep water drilling has become to go deeper area. It is not only oil and gas exploration, but also Methane Hydrate exploration and scientific drilling. In general, deep water drilling has a greater degree of difficulty than conventional drilling.
openaire   +2 more sources

Co‐Delivery of Sustained Release Chondroitinase ABC‐37 With Human iPSC‐Derived Neural Progenitors Promotes Transplant Survival and Functional Recovery in a Rodent Model of Stroke

Advanced Science, EarlyView.
A regenerative strategy for stroke combines human stem cell–derived neural progenitor cells with sustained release of a matrix‐modifying, thermostable chondroitinase ABC‐37 enzyme. In a rat model of stroke, co‐delivery enhanced transplanted cell survival and neuronal differentiation, degraded inhibitory extracellular matrix components, and improved ...
Nitzan Letko Khait, David Xinzheyang Li, Keyi Guo, Hong Cui, Quinton Sirianni, Dhana Abdo, Cindi M. Morshead, Molly S. Shoichet   +7 more
wiley   +1 more source

Drilling Fluid Technology for Ultra-High Temperature Fractured Bedrock Reservoirs

Zuanjingye yu wanjingye
The Kunteyi gas field is located in the #1 buried structure of the Kunteyi sag on the northern margin of the Qaidam Basin, the bedrock reservoirs of which are developed with fractures and have a weathering crust, and the formations of which have weak ...
Shaojun HAO, Xing XING, Xiaoxu AN, Shijun WEI, Jun ZOU, Tian HAO   +5 more
doaj   +1 more source

Method of drilling with magnetorheological fluid

, 2003
A method of drilling a bore hole into a stratum, wherein via the drill hole drilling fluid is introduced and fed to the drill head. In order to avoid dilution or leak-off of the drilling fluid the same is in accordance with the invention a ...
Zitha, P.L.J. (author)
core