Results 91 to 100 of about 4,489,694 (277)

Investigation of Single Grain Grinding of Titanium Alloy Using Diamond Abrasive Grain with Positive Rake Angle

open access: yesMachines
Traditional grinding, which is predominantly performed with a negative rake angle (NRA), can be transformed into grinding with a positive rake angle (PRA) by employing femtosecond pulsed laser technology to modify the apex angle of the grains to be less ...
Jiu Yin   +4 more
doaj   +1 more source

Design of a high-performance centrifugal compressor with new surge margin improvement technique for high speed turbomachinery

open access: yesPropulsion and Power Research, 2018
This paper presents the design of a centrifugal compressor for high-speed turbomachinery. The main focus of the research is to develop a centrifugal compressor with improved aerodynamic performance.
Sagar Pakle, Kyle Jiang
doaj   +1 more source

Microfluidic Molecular Diagnostic Chips: Functional Modules, Integration Strategies, and Emerging Applications

open access: yesSmall Methods, EarlyView.
This comprehensive review delivers an engineering‐centric analysis of microfluidic molecular diagnostic chips, breaking them down into foundational modules from fluid manipulation to bio‐sensing. Beyond chip design, it evaluates sample‐to‐answer integration strategies and commercial readiness levels.
Donghoon Koo   +7 more
wiley   +1 more source

Mechanism Analysis of Multi-Stage Fracturing Ball Seat Drilling and Milling in Tight Reservoirs

open access: yesShiyou jixie, 2019
At present, the drilling and milling process of multi-stage fracturing ball seats in tight reservoirs has problems such as low work efficiency, high failure rate and short service life.
张全胜   +6 more
doaj  

Reduction of Minimum Cutting Thickness of Titanium Alloys in Micro Cutting by a Magnetic Field Assistance

open access: yesIEEE Access, 2019
Ultra-precision diamond cutting (UPDC) is a promising machining technology to generate precise components with optical grade surface. However, a tool rake angle turns to be negative when the tool radius is significantly larger than cutting depth during ...
Wai Sze Yip, Suet To
doaj   +1 more source

Goffman's Tempting the Devil in Stigma: A Close Rereading of Goffman's “Subversive” Construct of “the Normals” Versus “the Stigmatized”

open access: yesSymbolic Interaction, EarlyView.
This article engages in a close rereading of Stigma, relating it to Goffman's biography as a person who faced stigma. Exploring his biography helps us to recognize the ways Goffman applies stigma strategies in how he represents himself as the author in Stigma.
Thaddeus Müller
wiley   +1 more source

高硬齿面双圆弧齿轮滚刀的铲磨研究

open access: yesJixie chuandong, 2006
Firstly,the computing formula for tooth profile of straight flute negative rake angle hob is derived from the tooth profile equation of double circular-arc gear basic worm.Then the axial-section profile equation of grinding wheel that is used to relieve ...
李志胜, 高红梅, 翟红升
doaj  

Source rupture process of the 2015 Gorkha, Nepal Mw7.9 earthquake and its tectonic implications

open access: yesGeodesy and Geodynamics, 2016
On 25 April, 2015, an Mw7.9 earthquake occurred in Nepal, which caused great economic loss and casualties. However, almost no surface ruptures were observed.
Lifen Zhang   +3 more
doaj   +1 more source

Letter with attachment: Paul M. Angle to Ida M. Tarbell, December 14, 1936

open access: yes, 1936
Letter with original transcript of preface to Whitney's Life on the Circuit with ...
Angle, Paul M.
core  

Home - About - Disclaimer - Privacy