Results 61 to 70 of about 14,048 (222)
Small, EarlyView.A one‐step bulk integration of the surfactant Tween 20 into PDMS enables intrinsic and water‐triggered hydrophilicity. Combined molecular simulations and experiments reveal a dual mechanism where bound and mobile Tween 20 molecules cooperatively induce self‐activating, stretch‐tolerant, and long‐term wettability, supporting self‐driven liquid transport,
Haotian Cha +8 more
wiley +1 more source
Development of New Multiple Compound Cutting Bit
Shiyou jixie, 2016 In order to raise the ROP of bit in the abrasive hard formation and extend bit service life, a new multiple compound cutting bit is developed. The bit adopts the three-level cutting structure of PDC+cone-shaped PDC tooth+impregnated diamond segment, with
Yang Shunhui
doaj
Development of PDC Bit with Axe-shaped Teeth and its Application in East China Sea
Shiyou jixie, 2021 The PDC bits used in many wells in the East China Sea had low ROP and small footage in the process of drilling deep formation. After the bits were pulled out, it was found that the cutting teeth had been worn severely.
Li Qian +5 more
doaj
How was it for you? Experiences of participatory design in the UK health service [PDF]
, 2013 Improving co-design methods implies that we need to understand those methods, paying attention to not only the effect of method choices on design outcomes, but also how methods affect the people involved in co-design.
Andy Dearden +21 more
core +1 more source
Andrology, EarlyView.ABSTRACT Background Infertility is a pressing global health concern, affecting one in six couples worldwide. The failure rate for assisted reproductive technologies (ART) cycles remains at approximately 78%, with limited improvements often attributed to a lack of technological innovation.
Mehran Dabiri +3 more
wiley +1 more source
Conglomerate Rock Breaking Technology with New PDC Cutter and Its Application
Shiyou jixie, 2019 In oil and gas drilling, PDC bit has become an indispensable downhole tool for rock breaking. However, conglomerate formation is still the restricted area for PDC bit. At present, most of conglomerate formations are drilled using roller cone bit.
Zhu Xiaolin +5 more
doaj
PDC cutter pressure on plastic-brittle rock in the process of its destruction
Записки Горного института, 2020 Presently, there are no methods for calculating the parameters of the drilling practices with rock-cutting tools equipped with polycrystalline diamond composite (PDC cutters). To create such a method requires the studying their work. The article presents
Oleg B. Trushkin, Hamzja I. Akchurin
doaj +1 more source
“Don't Fail With Me. I Will Complain”! A Study on Consumer Negative Emotions and Behaviours
International Journal of Consumer Studies, Volume 50, Issue 3, April 2026.ABSTRACT This paper aims to understand the motivations of consumers in emerging countries to express negativity on social media, respect e‐commerce service failures, and identify the most prevalent negative emotions revealed. In Study 1, 54 semi‐structured interviews were conducted with individuals who had recently complained about online stores on the
Matheus Frohlich Marquetto +2 more
wiley +1 more source
Optimization of Hydraulic Structure of Rotary Cutting PDC Bit
Shiyou jixie, 2020 Few researches have been conducted on the hydraulic structure optimization design of rotary cutting PDC bit. Standard k-ε model and discrete phase model (DPM) are used to simulate the bottom hole flow field of rotary cutting PDC bit and optimize the ...
Cao Yang, Zhang Boyu
doaj
Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications
Advanced Functional Materials, Volume 36, Issue 20, 9 March 2026.Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai +8 more
wiley +1 more source