Results 121 to 130 of about 131,967 (276)

Research on Cuttings Transportation in Coiled Tubing Drilling with Rotary Drillpipe

open access: yesShiyou jixie, 2019
To address the horizontal extension of coiled tubing drilling caused by difficult cutting transportation and large drilling string friction, a coiled tubing drilling system with rotary drillpipe for horizontal section is proposed.
Wang Wan, Ma Weiguo, Wang Xiaomeng
doaj  

Connexin43 Deficiency Leads to Ventricular Arrhythmias by Reprogramming Proline Metabolism

open access: yesAdvanced Science, EarlyView.
The study demonstrated that connexin43 (Cx43) knockout caused arrhythmic phenotype and decreased proline content in vitro and in vivo. Mechanistically, Cx43 interacts with the amino acid transporter SNAT2 (sodium‐dependent neutral amino acid transporter), and its deficiency disrupts proline transport and metabolism.
Hangying Ying   +8 more
wiley   +1 more source

A Liouville String Approach to Microscopic Time and Cosmology

open access: yes, 1993
In the non-critical string framework that we have proposed recently, the time $t$ is identified with a dynamical local renormalization group scale, the Liouville mode, and behaves as a statistical evolution parameter, flowing irreversibly from an ...
Ellis, J.   +2 more
core  

OCTN2 Activates a Non‐Canonical Carnitine Metabolic Pathway to Promote MASH‐HCC Progression and Immunotherapy Resistance

open access: yesAdvanced Science, EarlyView.
In non‐MASH‐HCC, L‐carnitine promotes tumor progression primarily through its classical role in enhancing fatty acid oxidation (FAO). However, in MASH‐HCC, where FAO is markedly suppressed, L‐carnitine shifts from this canonical function to serve instead as an intracellular acetyl group buffer.
Chuqi Xia   +11 more
wiley   +1 more source

A Perspective on Interactive Theorem Provers in Physics

open access: yesAdvanced Science, EarlyView.
Into an interactive theorem provers (ITPs), one can write mathematical definitions, theorems and proofs, and the correctness of those results is automatically checked. This perspective goes over the best usage of ITPs within physics and motivates the open‐source community run project PhysLean, the aim of which is to be a library for digitalized physics
Joseph Tooby‐Smith
wiley   +1 more source

Dynamic Response Analysis of Innovative Riserless Integrated String Lowering System

open access: yesShiyou jixie
To address the high-risk and high-cost issues of traditional riser string lowering operation mode, an innovative riserless integrated production string lowering system was proposed.
Di Jianwei   +6 more
doaj  

Dead Matter, Living Machines: Repurposing Crustaceans' Abdomen Exoskeleton for Bio‐Hybrid Robots

open access: yesAdvanced Science, EarlyView.
Crustacean exoskeletons, repurposed from food waste, are engineered into sustainable bending actuators combining biotic structure with synthetic control. The augmented exoskeletons achieve rapid and robust motion with lightweight body and can be used as part of robotic manipulators, grippers and swimmers.
Sareum Kim, Kieran Gilday, Josie Hughes
wiley   +1 more source

Free‐Volume Regulation Enables Significantly Enhanced Electrical Breakdown via Short‐Chain Molecular Spatial‐Positioning Intercalation into Poly(vinylidene fluoride)

open access: yesAdvanced Science, EarlyView.
An innovative molecular spatial‐positioning shimming strategy is developed to optimize the electrical properties of poly(vinylidene fluoride) (PVDF). By intercalating polyethylene wax (PE wax) short‐chain molecules into PVDF's free volume, the film achieves a significantly enhanced energy density of 32.67 J cm−3.
Ziyue Wang, Jiyang Xie, Wanbiao Hu
wiley   +1 more source

Symplectic structure in open string field theory. Part II. Sliding lump

open access: yesJournal of High Energy Physics
We use a new formula for symplectic structure to compute the momentum of an analytic lump solution moving at constant velocity in Witten’s open string field theory.
Vinícius Bernardes   +2 more
doaj   +1 more source

Development of a high-speed string-shoot impactor for extended-range remote tapping inspection

open access: yesMechanical Engineering Journal
Tapping inspections of structures are commonly performed manually by technicians. However, in the case of nuclear structures and other hazardous environments, maintaining a safe distance from the inspection target is preferable.
Saeko TOKUOMI   +2 more
doaj   +1 more source

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