Results 31 to 40 of about 327,861 (339)

Identification method for unsteady friction of tool flank for high efficiency milling cutter

open access: yesAdvances in Mechanical Engineering, 2023
Under the cutting loads of high efficiency and intermittent, the friction status between the tool flank and transition surface has time-varying characteristics, which directly affects friction and wear performance of the milling cutter.
Bin Jiang   +4 more
doaj   +1 more source

XANES Study of Structural Disorder in Amorphous Silicon [PDF]

open access: yes, 1990
An investigation of the structure of several amorphous silicon (a-Si) films is presented. Samples were prepared by using the ion beam sputtering technique at different substrate deposition temperatures.
Bianconi, A.,   +6 more
core   +3 more sources

Determining the stress state on the flank surface of a cutting tool

open access: yesТехнічна інженерія, 2022
The work investigates the question of theoretically calculating normal and tangent stresses on the contact area of the flank surface of a cutting tool.
M.P.
doaj   +1 more source

A stepwise emergence of evolution in the RNA world

open access: yesFEBS Letters, EarlyView.
How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley   +1 more source

Existence, regularity and upper semicontinuity of pullback attractors for the evolution process associated to a neural field model

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2017
In this work we study the pullback dynamics of a class of nonlocal non-autonomous evolution equations for neural fields in a bounded smooth domain $\Omega$ in $\mathbb{R}^N$ \[ \begin{cases} \partial_t u(t,x) =- u(t,x) + \displaystyle\int_{\mathbb ...
Flank David Bezerra   +2 more
doaj   +1 more source

Modifications in FLAP's second cytosolic loop influence 5‐LOX interaction, inhibitor binding, and leukotriene formation

open access: yesFEBS Letters, EarlyView.
The enzyme 5‐lipoxygenase (5‐LOX) catalyzes the first step in the biosynthesis of leukotrienes (LTs) involved in inflammatory pathophysiology. After cellular stimulation, 5‐LOX translocates to the nucleus, interacting with the 5‐LOX‐activating protein (FLAP) to form LTA4 from arachidonic acid (AA).
Erik Romp   +5 more
wiley   +1 more source

Interim Report: Pilot Project – Technology Integration in Underserved Schools Using Thinkfinity [PDF]

open access: yes, 2008
This pilot project was conceived as a way to enable teachers in schools with fewer technical resources than typical public schools, or with special needs for students and teachers, to explore and utilize the resources of Thinkfinity in lessons and ...
Flank, Sandra G.
core   +1 more source

Seismic stratigraphy of the Ontong Java Plateau [PDF]

open access: yes, 1993
The Ontong Java Plateau, a large, deep-water carbonate plateau in the western equatorial Pacific, is an ideal location for studying responses of carbonate sedimentation to the effects of changing paleoceanographic conditions.
Bassinot, Frank   +8 more
core   +2 more sources

On the Machinability of an Al-63%SiC Metal Matrix Composite [PDF]

open access: yes, 2020
This paper presents a preliminary study of aluminium matrix composite materials during machining, with a special focus on their behavior under conventional processes.
Batista Ponce, Moisés   +4 more
core   +1 more source

Intron‐oriented HTLV‐1 integration in an adult T‐cell leukemia/lymphoma cell line sustains expression of intact ift81 mRNA

open access: yesFEBS Letters, EarlyView.
In the adult T‐cell leukemia/lymphoma (ATL) cell line ED, the human T‐cell leukemia virus type 1 (HTLV‐1) provirus was integrated into the intron of the ift81 gene in the antisense orientation. Despite this integration, both the intact ift81 and the viral oncogene hbz were simultaneously expressed, likely due to the functional insufficiency of viral ...
Mayuko Yagi   +5 more
wiley   +1 more source

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