Results 91 to 100 of about 133,721 (303)
The Anatomical Record, EarlyView.Abstract Walruses have been an important subsistence and cultural resource for humans and have been exploited for millennia across their distribution. This exploitation has contributed to severe declines in several populations and local extirpations.
Katrien Dierickx +6 more
wiley +1 more source
Study on Tooth Wear of Spur Gears Under the Mixed Elastohydrodynamic Lubrication
Jixie chuandong, 2022 To study the wear evolution process and wear law of involute spur gears under the mixed elastohydrodynamic lubrication (EHL) and consider the lubrication conditions, thermal effects and load changes in the wear process of gear pairs, a wear model of gear
Wang Han +3 more
doaj
Severe tooth wear in Prader-Willi syndrome. A case–control study
BMC Oral Health, 2012 Background Prader-Willi syndrome (PWS) is a rare complex multsystemic genetic disorder characterized by severe neonatal hypotonia, endocrine disturbances, hyperphagia and obesity, mild mental retardation, learning disabilities, facial dysmorphology and ...
Saeves Ronnaug +4 more
doaj +1 more source
The influence of surface treatment of PVD coating on its quality and wear resistant [PDF]
, 2019 The article deals with a determination of the influence of a cutting edge preparation on the quality and wear resistance of coated cutting tools. Cutting inserts made from a sintered carbide with a deposited layer of PVD coating were selected for ...
Malotová, Šárka +3 more
core +1 more source
The Anatomical Record, EarlyView.Abstract The baphetoids represent a clade of the Carboniferous stem‐tetrapods (Middle Mississippian—Middle Pennsylvanian) with a characteristic extension of the orbits into antorbital vacuities, which formed keyhole‐shaped openings on the skull. The more derived baphetids were crocodile‐like piscivores frequently occurring in coal‐bearing lacustrine ...
Pavel Barták, Martin Ivanov, Boris Ekrt
wiley +1 more source
Tooth wear among five-year-old children in Jakarta, Indonesia
BMC Oral Health, 2019 Background This study aimed to evaluate the prevalence of tooth wear among preschool children in Jakarta, Indonesia, and examine the risk factors associated with its occurrence. Methods An epidemiological survey was conducted with a cross-sectional study
Diah Ayu Maharani +6 more
doaj +1 more source
The design and development of a spacecraft appendage tie down mechanism [PDF]
, 1985 The design and evolution is described of a spacecraft Appendage Tie Down Mechanism (ATDM). Particular emphasis is paid to the mechanical aspects of using dry lubricants to increase the efficiency of acme threads and worm gearing.
Head, R., Nygren, W. D.
core +1 more source
The Anatomical Record, EarlyView.A new musculoskeletal reconstruction and revision of the cranio‐mandibular anatomy of the Devonian arthrodire placoderm Dunkleosteus terrelli from a comparative and functional anatomical perspective. Dunkleosteus is a specialized arthrodire with many specializations for feeding on large vertebrates, and many of its features are part of broader ...
Russell K. Engelman +4 more
wiley +1 more source
The Prevalence and Severity of Tooth Wear in Type 2 Diabetic Patients
International Journal of Dentistry, 2018 Objective. To assess the prevalence and severity of tooth wear in type 2 diabetic patients. Methods. Attendees at a diabetic clinic at Wiang Pa Pao Hospital in Chiang Rai province, Thailand, were invited to take part in this cross-sectional study.
Patcharawan Srisilapanan +2 more
doaj +1 more source
Research progress on the application of digital technology in the diagnosis and treatment of tooth wear [PDF]
口腔疾病防治Tooth wear is a common and complex oral problem, with a gradually increasing global incidence. Tooth wear not only affects the oral function and esthetics of patients but may also lead to tooth sensitivity, temporomandibular joint diseases, and other ...
HE Yi, WANG Dingjie, XIAO Yuhong
doaj +1 more source