Results 91 to 100 of about 480,796 (309)

Defect Analysis of the β– to γ–Ga2O3 Phase Transition

open access: yesAdvanced Functional Materials, EarlyView.
The role of defects at all the relevant stages of the β$\beta$‐ to γ$\gamma$‐Ga2O3 polymorph transition is investigated using a multi method approach. The positron annihilation spectroscopy based results show that the defect density decreases after the transition, and that changes in defect configuration within the γ phase occur with increasing ...
Umutcan Bektas   +9 more
wiley   +1 more source

Fish pass design - criteria for the design and approval of fish passes and other structures to facilitate the passage of migratory fish in rivers [PDF]

open access: yes, 1984
Many of British rivers hold stocks of salmon (Salmo salar L.) and sea trout (Salmo trutta L.) and during most of the year some of the adult fish migrate upstream to the head waters where, with the advent of winter, they will eventually spawn.
Beach, M.H.
core  

Backbone Heterojunction Photocatalysts for Efficient Sacrificial Hydrogen Production

open access: yesAdvanced Functional Materials, EarlyView.
Herein, a ‘single‐component’ organic semiconductor photocatalyst is presented in which a molecular donor is bonded to a polymer acceptor. The resultant material demonstrates exceptional photocatalytic activity for hydrogen evolution in aqueous triethylamine with an outstanding external quantum efficiency of 38% at 420 nm.
Richard J. Lyons   +11 more
wiley   +1 more source

Monitoring face-mill geometry [PDF]

open access: yesRussian Engineering Research, 2013
N. V. Kolesov, N. N. Petrosyan
openaire   +1 more source

Caste, Kinship, and Life Course: Rethinking Women's Work and Agency in Rural South India [PDF]

open access: yes, 2014
This paper reexamines the linkages between women's work, agency, and well-being based on a household survey and in-depth interviews conducted in rural Tamil Nadu in 2009 and questions the prioritization of workforce participation as a path to gender ...
Benería Lourdes   +24 more
core   +1 more source

The Realization of Multidirectional, Free‐Standing 3D Plasmonic Nanostructures via 3D Nanoprinting: A Case Study of Fractal Antennas

open access: yesAdvanced Functional Materials, EarlyView.
Free‐standing plasmonic gold‐based fractal antennas are fabricated by 3D nanoprinting, employing focused electron beam induced deposition and an optimized purification method to remove carbon while conserving structural fidelity. Simulation and experiment show broadband plasmonic activity, including customizable polarizability, thereby paving the way ...
Verena Reisecker   +6 more
wiley   +1 more source

Research of the Plunge Milling for Face Gear

open access: yesJixie chuandong, 2015
Study the face gear machining method by using the plunge milling processing,according to the face gear slotting processing principle and gear engagement principle,a plunging processing method with multi group envelops processing is proposed.Based on the ...
Tang Jinyuan, Yang Xiaoyu
doaj  

Finish machining of hardened steel by face milling using uncoated and TiSiN and TiAlN coated PCBN tools

open access: yesТехнічна інженерія
The article presents the results of experimental studies on the influence of various cutting regimes on the surface roughness of high-hardness hardened steel obtained after face milling with polycrystalline cubic boron nitride (PCBN) tools, both uncoated
Ya.Р. Kovalenko, P.Р. Melnychuk
doaj   +1 more source

DETERMINATION OF CUTTING TEMPERATURE WHILE MILLING TITANIUM ALLOY BY FACE MILLS

open access: yesJournal of Mechanical Engineering the National Technical University of Ukraine "Kyiv Polytechnic Institute", 2016
In this article, the analysis process features high-speed cutting, which mainly attributed to the cutting temperatures depending on the speed of processing. Shows that depending on the design and tool size main criterion decrease temperature cutting not always characterized by high-speed processing. The reason for this is the rise temperature to values
openaire   +2 more sources

User's manual for tooth contact analysis of face-milled spiral bevel gears with given machine-tool settings [PDF]

open access: yes
Research was performed to develop a computer program that will: (1) simulate the meshing and bearing contact for face milled spiral beval gears with given machine tool settings; and (2) to obtain the output, some of the data is required for hydrodynamic ...
Chen, Jui-Sheng   +2 more
core   +1 more source

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