Results 61 to 70 of about 357,157 (220)

Anatomy and variation in the paraphyletic Mosasaurus lemonnieri assemblage from the Craie phosphatée de ciply, Belgium

The Anatomical Record, EarlyView.
Abstract Nineteenth century excavations of the Ciply‐Malogne Phosphatic Chalk Formation in Hainaut, Belgium, yielded over 50 partial mosasaur skeletons, the majority of which were referred to the species Mosasaurus lemonnieri Dollo, 1889. In the years since, this taxon has experienced a complicated taxonomic history, and its exceptional hypodigm has ...
Henry S. Sharpe, Hallie P. Street‐Sampson, Takuya Konishi, Michael W. Caldwell   +3 more
wiley   +1 more source

Tool-Wear Analysis Using Image Processing of the Tool Flank [PDF]

Symmetry, 2017
Flexibility of manufacturing systems is an essential factor in maintaining the competitiveness of industrial production. Flexibility can be defined in several ways and according to several factors, but in order to obtain adequate results in implementing a flexible manufacturing system able to compete on the market, a high level of autonomy (free of ...
Ovidiu Gheorghe Moldovan, Simona Dzitac, Ioan Moga, Tiberiu Vesselenyi, Ioan Dzitac   +4 more
openaire   +1 more source

First evidence of a mandibular crest in Brasileodactylus Kellner, 1984 (Pterosauria, Pteranodontoidea, Anhangueridae), with comments on pterosaur headcrests

The Anatomical Record, EarlyView.
Abstract Brasileodactylus araripensis Kellner, 1984, is a toothed pterosaur from the Lower Cretaceous Romualdo Formation of the Araripe Basin, Brazil. Traditionally regarded as crestless, the species has been central to debates on anhanguerid taxonomy, as most members of the clade possess well‐developed sagittal cranial or dentary crests.
Anderson da Silva Nascimento, Rubi Vargas Pêgas, Alessandra Silveira Machado, Ricardo Tadeu Lopes, Fabiana Rodrigues Costa   +4 more
wiley   +1 more source

Dark Heritage Prospection ‐ Mapping the Treblinka II Extermination Camp Using a Magnetometer Survey and Integrated Archival Sources

Archaeological Prospection, EarlyView.
ABSTRACT The history of Nazi German extermination camps has, until recently, relied primarily on eyewitness testimony. Very few official documents detailing the facilities survived the war due to the special operation ‘Sonderaktion 1005’, dedicated to hiding their existence and extent.
Sebastian Różycki, Michał Pisz, Paweł Bylina, James Walker, Lucy Benoit   +4 more
wiley   +1 more source

Organic photonic synaptic transistors for bionic vision: From spectral engineering to flexible intelligent perception

FlexMat, EarlyView.
Different wavelength photonic synapses are used for biomimetic visual applications. Abstract Bionic intelligent visual perception systems have significant application prospects in fields such as autonomous driving and robotics, medical imaging and auxiliary diagnosis, security and monitoring.
Longlong Jiang, Shan Wu, Silu Feng, Heyi Huang, Wangyu Wu, Hong Han, Yao Ni   +6 more
wiley   +1 more source

A flexible dual‐gate thin‐film transistor‐based tactile sensor array with polarity‐aware encoding for neuromorphic recognition

FlexMat, EarlyView.
A flexible piezoelectric tactile sensor array is developed by integrating polyvinylidene fluoride sensing elements with dual‐gate indium‐tin‐zinc oxide thin‐film transistor‐based pixel amplifiers. Direct coupling to the high‐impedance gate minimizes signal loss, enabling twofold voltage amplification and an extended effective relaxation time of ∼4.86 s
Tengteng Lei, Boyi Zhu, Yushen Hu, Tianming Li, Man Wong   +4 more
wiley   +1 more source

Performance and wear mechanisms of PCD and pcBN cutting tools during machining titanium alloy Ti6Al4V

, 2020
The need for increased productivity in difficult-to-machine titanium alloys has pushed manufacturers to examine the potential of ultrahard cutting tool materials such as polycrystalline diamond and polycrystalline cubic boron nitride as alternative ...
Lenrick, Filip,, Persson, Henrik,, Bushlya, Volodymyr,, Ståhl, Jan Eric,, Lindvall, Rebecka,, Lund University., M'Saoubi, Rachid,   +6 more
core   +2 more sources

An Investigation of Residual Stresses after the Turning of High-Tempered Bearing Steel

Machines
This study is focused on analysing residual stresses (RSs) after turning high-tempered bearing steel through the use of the X-ray diffraction (XRD) technique.
Anna Mičietová, Mária Čilliková, Robert Čep, Branislav Mičieta, Juraj Uríček, Miroslav Neslušan   +5 more
doaj   +1 more source

Flank Wear Progress and Variation of Tool Forces

Journal of the Japan Society of Precision Engineering, 1963
The cutting mechanism under conditions of progressive flank wear was analyzed theoretically. General expressions for depth of cut and stock removal rate were derived, taking variation of tool forces into consideration.Ferritie nodular cast iron was machined with carbide and ceramic cutting tools, and variation of tool forces associated with progress of
OKUSHIMA, Keiji, HITOMI, Katsundo
openaire   +2 more sources

Deduction of flank and crater wear from measurements of the total volumetric wear rates of radioactive tools

Some simple considerations of the total volumetric wear rates measured in tool life tests using radioactive tools provided information on the separate contributions of flank and crater wear effects.
Datar, S. B., Chawla, R.
core   +1 more source