Results 91 to 100 of about 23,694,863 (285)

Lubricated contact analysis of a spur gear pair with dynamic loads [PDF]

In the present research study, a comprehensive spur gear lubrication analysis has been carried out to understand the gear contact behaviour under lubrication conditions.
Liu, Huaiju
core  

First Record of Tasmanian Devils in the Pilbara: Late Quaternary Subfossils From Juukan Gorge, Puutu Kunti Kurrama Country, and Insights Into Human—Faunal Relationships and Extinction

Archaeology in Oceania, EarlyView.
ABSTRACT This study presents the first unequivocal evidence for the presence of Tasmanian devils (Sarcophilus harrisii) in the Pilbara region of northwestern Australia, based on material recovered from archaeological excavations at Juukan Gorge on Puutu Kunti Kurrama and Pinikura country.
Timothy J. Churchill, Michael Slack, Elise Matheson, Liam Neill, Wanchese M. Saktura, Gavin Ashburton   +5 more
wiley   +1 more source

Analysis of geometric difference of opposite tooth flanks for traction helical gear pairs in railway transit train

Jixie chuandong
ObjectiveThe influence of the geometric difference of opposite tooth flanks on the contact line length and meshing performance of traction helical gear pairs for rail transit trains was analyzed to reveal the formation mechanism of the transmission ...
GOU Xiangfeng, LI Huijie
doaj  

Dissecting the dissection laboratory: Elements for designing a human anatomy laboratory

Anatomical Sciences Education, EarlyView.
Abstract The human anatomy dissection laboratory is a critical component of anatomical and medical education. Development, maintenance, and stocking of these laboratory spaces have unique demands, with all of the challenges in running a laboratory with Biosafety Laboratory Level 2 (BSL‐2) classification, housing a large volume of tissues saturated with
Rhiannon E. Robinson, Abbey Breckling, Danielle N. Edwards, Nicole Geske, Burhan Gharaibeh, Bobbie J. Leeper, Molly Ostwald, Mary Schilling, Bridgett Severt, Kelsey Stevens, J. P. Swigart, Jonathan J. Wisco, Melissa Zolnierz, Jeremy J. Grachan   +13 more
wiley   +1 more source

Transmission errors in precision worm gear drives [PDF]

Transmission error is a measure of the positioning accuracy of a gear system. This has been widely documented in gearing for many years as the source of problems in noise and vibration.
Fish, Michael Anderson
core   +4 more sources

齿面研磨边界的确定与研齿性能试验

Jixie chuandong, 2007
Based on the tooth contact simulation and the analysis of transmission errors and contact ratio on the lapping process,the lapping boundary of the tooth surface is determined:±0.25～0.3 face width and ±0.1～0.25 tooth height in the middle of tooth surface ...
魏冰阳, 毛玺, 杨宏斌, 方宗德
doaj  

Fatigue analysis of catenary contact wires for high speed trains [PDF]

, 2011
The fatigue fracture is one of the most critical failures which may occur on the high speed network because it is undetectable and it has a huge impact on traffic disruption.
MAITOURNAM, Habibou, BALMES, Etienne, NGUYEN TAJAN, T.M.L., MASSAT, Jean-Pierre, Massat, Jean Pierre   +4 more
core  

Making it explicit – Sustained shared thinking dialogue as a way to explore children's perspectives on quality in German early childhood education and care

British Educational Research Journal, EarlyView.
Abstract To negotiate quality in early childhood education and care, we must ask from different perspectives what constitutes a good centre for children. The children themselves have only recently been identified as a resource to contribute to that discussion.
Katrin Macha, Frauke Hildebrandt, Caroline Wronski, Jan Lonnemann, Mathias Urban   +4 more
wiley   +1 more source

Beyond wound sealing: A dual‐functional adhesive nanofiber membrane promoting coagulation and osteogenesis in extraction sites

BMEMat, EarlyView.
Inspired by the suction mechanics of octopus suckers, a dual‐layer nanofiber membrane integrates antibacterial protection, strong wet adhesion, and osteogenic support, offering a bioinspired strategy for effective hemostasis and alveolar bone preservation.
Huijing Ma, Liheng Gao, Hao Liang, Wentao Jiang, Junyi Wang, Jiajia Wang, Shuhan Duan, Lingxi Meng, Adilijiang Yimiti, Wenjie Zhang   +9 more
wiley   +1 more source

Research of Meshing Contact Impact Stress Distribution of Circular Arc Tooth Trace Cylindrical Gear Surface

Jixie chuandong, 2018
In order to research the meshing contact impact stress distribution rule of the circular arc tooth trace cylindrical gear,the cause of meshing contact impact is analyzed based on gear system contact dynamics and gear physical model. Then,the accurate 3 D
Ma Dengqiu, Wei Yongqiao, Ye Zhenhuan, Luo Lan, Hou Li   +4 more
doaj