Results 131 to 140 of about 16,459 (288)
AMESim-based Study on Dynamic Behavior of Gripping Force of Coiled Tubing Injector Head
Shiyou jixie, 2018 Many problems occur in the coiled tubing operation in oil and gas wells, including coiled tubing slipping, slippage and tubing bite, which seriously threaten the safety of the operation and the life of the coiled tubing.
Ma Weiguo +5 more
doaj
Advanced Science, EarlyView.Using human induced pluripotent stem cells (hiPSCs)‐derived neuronal model, Tian and colleagues reveal that voltage‐gated calcium channels Cav1.2 and Cav1.3, and their mediated calcium ion influx, are essential for early morphogenesis of human neuronal development, while ECEL1 underlies human neuronal functional developmental maturation through CALM3 ...
Yue Tian +5 more
wiley +1 more source
Design of Jar Tool for Coiled Tubing Drilling
Shiyou jixie, 2019 In the coiled tubing drilling, due to the characteristics of the coiled tubing, friction self-locking is prone to occur after put on weight, which leads to problems such as low axial force transmission efficiency and difficulty in horizontal section ...
Miao Zhipeng +4 more
doaj
A vapor generator for transonic flow visualization [PDF]
A vapor generator was developed for use in the NASA Langley Transonic Dynamics Tunnel (TDT). Propylene glycol was used as the vapor material. The vapor generator system was evaluated in a laboratory setting and then used in the TDT as part of a laser ...
Bruce, Robert A. +2 more
core +1 more source
Early Detection of Cell Death Using Transmembrane Water Exchange Magnetic Resonance Imaging
Advanced Science, EarlyView.Cell death is important in both the development and treatment of cancer. In this study, it is demonstrated for the first time that a specific measurement of the transmembrane water exchange rate using magnetic resonance imaging can be used as an early marker of cell death in mammalian cells, in animals and in human patients. Abstract Cell death plays a
Athanasia Kaika +22 more
wiley +1 more source
Calculation of Annular Flow Resistance of Coiled Tubing in Slimhole Based on Hyperbolic Model
Shiyou jixie, 2019 Most of the researches on the annulus flow resistance in China are focused on the conventional drilling annulus flow resistance, few study is involved in the calculation of the annular flow resistance of coiled tubing drilling in ø89.0 mm slimhole.
Hou Xuejun +6 more
doaj
Advanced Science, EarlyView.Water scarcity poses a critical threat to global food security. A low‐power, flexible electromagnetic actuator is presented for smart drip irrigation systems. The device achieves precise, wide‐range flow modulation (0.05–5.8 mL/min) in response to real‐time plant demands, reducing water consumption compared to conventional flood irrigation.
Duo Chen +7 more
wiley +1 more source
Mini-rack testbed evaluation [PDF]
The goal was to characterize the Health Maintenance Facility (HMF)-like mini-racks and drawers onboard the KC-135 as a test bed for the Space Station Freedom HMF racks. An additional goal was to evaluate the attachments, mounting points, and inner drawer
Gosbee, John +2 more
core +1 more source
NuSAP Safeguards Centriole Integrity to Mediate CEP57‐CEP152 Torus Recruitment for Proper Engagement
Advanced Science, EarlyView.This study reveals a novel role for the microtubule stabilizer NuSAP at centrioles. NuSAP depletion destabilizes the centriole's tubulin structure, causing premature disengagement, PCM defects, and mis‐localization of the CEP57‐CEP63‐CEP152 complex. By reinforcing centriole architecture, NuSAP enables early CEP57 loading and initiates a newly proposed ...
Shiyu Zhang +8 more
wiley +1 more source
, 1976 An apparatus is described for trapping solar energy for heating a fluid that could be subsequently used in turbines and similar devices. The apparatus includes an elongated vertical light pipe having an open end through which the visible spectrum of ...
Brantley, L. W., Jr.
core +1 more source