Results 41 to 50 of about 3,846 (166)

Design of a Novel Gripping Mechanism and Dual Manipulator Robotic System for Apple Harvesting Using Tractor

Journal of Field Robotics, EarlyView.
ABSTRACT The architecture of apple orchards can be converted to easier operation by implementing the use of a low‐cost, tractor‐mounted, dual manipulator based on a robotic harvesting system with lower degrees of freedom (DoF). To accurately avoid injuries by detecting apples, an efferent, real‐time vision system that includes a new gripping mechanism ...
R. M. Rasika D. Abeyrathna, Victor Massaki Nakaguchi, Zifu Liu, Tofael Ahamed   +3 more
wiley   +1 more source

Demonstrating a vapor chamber cooling structure for the shaft of motor spindles

Applied Thermal Engineering
The thermally induced deformation of motor spindles, which is an essential component of machine tool, takes significant responsibility for the overall processing errors. Traditionally, water-cooling-circuit is applied to dissipate the heat generated in the built-in motor and the bearings.
Feng Liang, Wilko Rohlfs, Reinhold Kneer, Liang Xu, Jianmin Gao   +4 more
openaire   +1 more source

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

A Study on the Static and Dynamic Characteristics of the Spindle System of a Spiral Bevel Gear Grinding Machine

Machines
To enhance the static and dynamic performance of the grinding wheel spindle system, with the gear grinding machine (YKF2060) as the research object, a static mechanics model of the spindle system was established based on Castigliano’s theorem, taking ...
Shuai Huang, Juxin Wang, Kaifeng Huang, Jianwu Yu   +3 more
doaj   +1 more source

Between Gaps and Voids: An Archaeometrical Study of Degraded Fibers in a Sherd From the Cueva dos Chinches Muertas, Siltzul (Raxruha, Alta Verapaz, Guatemala)

Archaeometry, EarlyView.
ABSTRACT In 2019, excavations at the Cueva dos Chinches Muertas carried out by the Raxruha Viejo Project uncovered a small ceramic sherd distinguished by a stratified structure composed of multiple layers of textile imprints, both superficial and transversal.
Marie Ramelet
wiley   +1 more source

Crossing Ceramic Decoration Boundaries: Compositional and Morphological Analyses of the Mortuary Assemblage From Maridíaz (Nariño, Colombia)

Archaeometry, EarlyView.
ABSTRACT This paper examines the interaction of two ware traditions in the Maridíaz mortuary assemblage (Pasto, Nariño, Colombia), a rare, well‐documented cemetery context in which Piartal, Tuza, and hybrid vessels co‐occur. Using portable X‐ray fluorescence (n = 39) and 3D geometric morphometrics (n = 25), we find shared ceramic compositions ...
Catherine Klesner, Felipe Cárdenas‐Arroyo, Rosie Crawford, Faith‐Lyn Hay, Marcos Martinón‐Torres   +4 more
wiley   +1 more source

ANALYSIS AND OPTIMIZATION OF DYNAMIC OUTPUT SHAFT STRUCTURE BASED ON FINITE ELEMENT METHOD

Jixie qiangdu, 2020
The output shaft is one of the core components of the gearbox of an oil rig,The reliability of the output shaft directly affects the service life and economic benefit of the oil rig.
LI YunPeng, CHENG ZiLi, ZHANG HongTao, WAN GuoWei   +3 more
doaj  

Magical Realist Hauntings in Children's Everyday Encounters With Death, or, How to Believe in Impossible Things

Children &Society, EarlyView.
ABSTRACT Modern deaths have become reiterations. That is, despite exhibiting a seemingly high‐level of diversity in death's representations in everyday lives, death suffers from a particular onto‐epistemological poverty that prevents it from being imagined otherwise.
Zhaoxi Zheng, Rebecca E. Olson, Sally Staton   +2 more
wiley   +1 more source

THERMAL CHARACTERISTIC ANALYSIS METHOD OF MOTORIZED SPINDLE BASED ON THERMAL LOAD OPTIMIZATION CORRECTION

Jixie qiangdu, 2020
For the inaccuracy of empirical heat loads for spindle thermal simulations,a thermal simulation analysis method onto motorized spindle unit is proposed.Firstly,the fluid-solid-heat coupling simulation model of the motorized spindle unit is established by
MENG LingCong, LI ChenTao, YU Bing, LIU Teng, ZHANG JianJun   +4 more
doaj  

Long‐term crucian carp (Carassius carassius) resilience to duckweed (Lemnaceae) dominance in a small eastern English pond

Journal of Fish Biology, EarlyView.
Abstract Successful scientifically informed fish conservation requires a good knowledge of how fishes have and will be affected by multiple stresses over the decadal‐centennial timescales relevant to real‐life fish‐environment responses. By combining palaeoecological and monitoring data (regular sampling over 16 years), we studied the long‐term ...
Carl D. Sayer, Ali Serhan Tarkan, Dave Emson, Ian R. Patmore, Keith J. Wesley, Helen M. Greaves, Luke Pearson, Roger Grady, Glenn Wiseman, Graham Gamble, Dagmara Błońska, Simone Cittadino, Mehmet Topkaya, Ravina Bains, Rebecca Stubbs, J. Robert Britton, Gordon H. Copp   +16 more
wiley   +1 more source