Results 51 to 60 of about 466,420 (180)

Feasibility study of creep feed grinding of 300M steel with zirconium corundum wheel

, 2021
The ultrahigh strength 300M steel has been commonly used in the manufacture of aircraft landing gear and rotor shaft parts due to its excellent mechanical properties.
Jiaqiang Dang, H. Zang, Q. An, W. Ming, Ming Chen   +4 more
semanticscholar   +1 more source

Evaluation of bone preparation approaches using length‐based analysis and targeted sequencing for forensic human identification of historic skeletal remains

Journal of Forensic Sciences, EarlyView.
Abstract Advances in DNA technology have significantly enhanced the forensic community's ability to develop genetic profiles from unidentified human skeletal remains. However, sampling requires mechanical grinding of hard tissues before DNA isolation. This processing can compromise genetic profiles, particularly in aged bones.
Ciara Rhodes, Jacqueline Tyler Thomas, Kimberly Sturk‐Andreaggi, Tal Simmons, Sarah Seashols‐Williams   +4 more
wiley   +1 more source

砂轮性能对齿轮磨削效率及磨削烧伤的影响

Jixie chuandong, 2013
For improving the grinding efficiency and reducing the probability of gear grinding burns in the process of the gear grinding,the gear grinding experiment is carried out through changing grinding wheel type based on knowing the machine performance.The ...
肖伟敬, 汪军, 付慰平, 敖宝林, 丁英晖   +4 more
doaj  

Bridging the Late Antique Gap in Northwest Arabia: New Archaeological Evidence on the Occupation of Wādī al‐Qurā (al‐ʿUlā [AlUla], Saudi Arabia) Between the Third and Seventh Centuries CE

Arabian Archaeology and Epigraphy, EarlyView.
ABSTRACT In 2019, the Dadan Archaeological Project (CNRS/RCU/AFALULA) identified a Late Antique village 1 km south of ancient Dadan in the al‐ʿUlā valley (northwest Saudi Arabia). Three excavation seasons at this site (2021–2023) have uncovered a massive building constructed in the late third or early fourth cent.
Jérôme Rohmer, Abdulrahman Alsuhaibani, Charlène Bouchaud, Elora Chambraud, Vladimir Dabrowski, Hatem Djerbi, Fabien Lesguer, Hervé Monchot, Paul Picavet, Louise Purdue, Bertrand Riba, Shadi Shabo   +11 more
wiley   +1 more source

Increase of accuracy of geometric forms of surfaces ground by a grinding wheel of various grain sizes

Advances in Mechanical Engineering, 2017
The article presents comparative experiments by the examination of conditions of the increase of the accuracy of geometric forms of surfaces ground by the grinding wheel with various grain sizes of a new construction and a standard grinding wheel.
Huseynov Hassan, Bagirov Sahib, Radoslav Krehel’, Marek Kočiško   +3 more
doaj   +1 more source

New Results From the Pre‐Pottery Neolithic Site of Al Uyaynah, Tabuk, in Northwestern Saudi Arabia

Arabian Archaeology and Epigraphy, EarlyView.
ABSTRACT Al Uyaynah is a low sandstone mound on an alluvial plain, long known for its extensive surface remains of stone‐built circular and rectangular structures. Following test excavations in 2012, more detailed excavation was undertaken in 2016 within one of the largest rectangular stone structures.
Khalid Alasmari, Stephanie F. Piper, Kirsten Grothe, W. Derek Hamilton, Delphine Joly, Penny Bickle, Geoff Bailey   +6 more
wiley   +1 more source

Grinding Force Model of the Grinding Helical Gear by Using Forming Method

Jixie chuandong, 2015
Based on the geometric principles of the 5-axis CNC forming grinding and machine kinematics principle,the line speed of wheel at any points is deduced.According to the traditional plane grinding force model,these relationships are used that molding ...
Wang Huiliang, Xiong Yuquan, He Guangqiang   +2 more
doaj  

Research on the Grinding Performance of an Electroplated Coarse-Grained Diamond Grinding Wheel by Dressing

Machines
The coarse-grained electroplated diamond grinding wheels is increasingly favored in precision grinding of hard and brittle materials owing to its high material removal efficiency, high wear resistance and steady surface contour accuracy.
Yongqi Xia, Shibo Deng, Mingtao Wu, Binkun Ni   +3 more
doaj   +1 more source

Wear Characteristics of Vitrified cBN Grinding Wheels

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2008
To clarify the wheel wear characteristics in grinding process using vitrified cBN wheels, we have investigated the change in wheel wear behavior when the load on the grain cutting edge is increased by increasing work speed.
Masakazu FUJIMOTO, Yoshio ICHIDA, Ryunosuke SATO   +2 more
doaj   +1 more source

The Late Agricultural Development of Central Arabian Oases—Archaeobotanical and Archaeozoological Studies of the al‐Kharj Oasis

Arabian Archaeology and Epigraphy, EarlyView.
ABSTRACT While oasis settlements emerged during the Bronze Age in Eastern and Northern Arabia, the settlement process in Central Arabia was different. Excavations at al‐Yamāma—main ancient settlement of the al‐Kharj oasis (Riyadh Province, KSA)—suggest that the latter did not emerge before the second half of the first millennium BCE.
Elora Chambraud, Hervé Monchot, Vladimir Dabrowski, Charlène Bouchaud, Jérémie Schiettecatte   +4 more
wiley   +1 more source