Results 71 to 80 of about 2,021,478 (258)
Advanced Engineering Materials, EarlyView.Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel +6 more
wiley +1 more source
Study on Continuous Hydraulic Circulating Operation in Horizontal Wells
Shiyou jixie, 2016 To address the issues of hydraulic operation in horizontal well like low impact force of reverse circulation and poor fluid carrying capacity of normal circulation,and to improve the operating efficiency of hydraulic circulation,the normal and reverse ...
Wang Shangwei +3 more
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Study on Abrasion of Coiled Tubing for Reverse Circulation Sand Washing
Shiyou jixie, 2020 To address the abrasion on the pipe wall caused by high particle volume fraction fluid during reverse circulation sand washing using coiled tubing, the Euler-Euler two-phase flow model is adopted, a new wear model is selected and the corresponding user ...
Zhao Qian +4 more
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MODELING OF DEEP CURRENTS IN THE JAPAN SEA: RELATIONSHIP WITH THE CURRENTS IN THE THERMOCLINE LAYER
Известия ТИНРО, 2018 Geostrophic deep circulation in the Japan Sea is modeled using the primitive equation multilayer model developed by N.B. Shapiro and E.M. Mikhaylova (Marine Hydrophysical Istitute, RAS).
O. O. Trusenkova
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Fractional Skyrmion Tubes in Chiral‐Interfaced 3D Magnetic Nanowires
Advanced Functional Materials, EarlyView.In chiral 3D helical magnetic nanowires, the coupling between the geometric and magnetic chirality provides a way to create topological spin states like vortex tubes. Here, it is demonstrated how the breaking of this coupling in interfaced 3D nanowires of opposite chirality leads to even more complex topological spin states, such as fractional ...
John Fullerton +11 more
wiley +1 more source
Simulation and Analysis of a Split Drill Bit for Pneumatic DTH Hammer Percussive Rotary Drilling
GeofluidsReverse circulation impact drilling has the advantages of high drilling efficiency and less dust, which can effectively form holes in hard rock and gravel layer.
Yuanling Shi, Conghui Li
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Particle Carrying Capacity of Foam Fluid for Reverse Circulation Well Cleanup
Shiyou jixie, 2020 Due to its low density, high viscosity and suspending ability, foam fluids are widely used in oilfield well cleanup operations. To study the particle carrying capacity of the foam fluid in the reverse circulation well cleanup process, the reverse ...
王小兵 +6 more
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Principles of selection ofdrilling mud stream volume when drilling with a stream pump [PDF]
Acta Montanistica Slovaca, 2006 The reverse mud circulation induced by a stream pump is most frequently applied for large diameter drilling. This system is treated as auxiliary in all design solutions.
Jan Macuda, Andrzej Gonet
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Residual circulation and thermohaline distribution of the Ría de Vigo: A 3-D hydrodynamical model
Scientia Marina, 2001 A three-dimensional, non-linear, baroclinic model is described and tested for the first time to study the residual circulation and the thermohaline distribution of the Ría de Vigo (NW Spain) at short time scales and under different wind stress regimes ...
S. Torres López +2 more
doaj +1 more source
Advanced Functional Materials, EarlyView.This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies +8 more
wiley +1 more source