Results 71 to 80 of about 6,355,244 (249)
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 +3 more
wiley +1 more source
Analysis of Influence of Double-arc Flexspline Parameter on Flexspline Stress
Jixie chuandong, 2021 In order to optimize the structure of the flexspline in the double-arc harmonic reducer， the three-dimensional model of the flexspline with double arc tooth profile is established by using the SoildWorks software， and the deformation of the flexspline by
Liang Ma, Bing Wu, Qi Shen, Guoyan Li
doaj
The Anatomical Record, EarlyView.Abstract Amphisbaenians (Squamata: Amphisbaenidae) are fossorial reptiles with highly specialized cranial morphology, yet their fossil record is frequently limited by fragmentary preservation. This study provides a detailed osteological redescription of the skulls of Amphisbaena braestrupi and Amphisbaena laurenti from the Pleistocene of Lagoa Santa ...
Carolina L. Paiva +2 more
wiley +1 more source
Механика машин, механизмов и материаловThe paper considers scientific and engineering aspects of design, optimization, calculation, construction and ensuring manufacturability of production of drive axles of heavy-duty quarry dump trucks.
Sergei A. Shyshko +3 more
doaj +1 more source
The Anatomical Record, EarlyView.Abstract Sequence variations in fibroblast growth factor receptor 2 (FGFR2) are associated with craniosynostosis syndromes, disrupting craniofacial development, yet early mandibular alterations remain poorly characterized. This study examined Meckel's cartilage (MC) and mandibular morphology in mouse models of Apert (Fgfr2+/P253R) and Crouzon ...
Fred R. Foster +7 more
wiley +1 more source
Comrade Black Distribution [February 1998 catalogue]
, 1998 The catalog of a D.I.Y. retail distributor of political and small press books and pamphlets. Started in 1996, CB Distribution is an effort to counter the homogeneity of political and artistic thought that dominates the mainstream media.
Comrade Black Distribution
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Animal Research and One Health, EarlyView.Intensive or organic farming systems may expose pigs to management or environmental challenges. Our preliminary results concluded that organic farming might enhance adaptive immune function, showing that improvements in welfare can translate into measurable immunological benefits, based on the correlation between welfare assessment and physiological ...
Dorotea Ippolito +15 more
wiley +1 more source
Jixie chuandong, 2007 Based on the mathematical model of involute gear at any rotary angle, the calculation mathematical model of any point on the root is put forward by fold section analytics, and the calculating formula’s accuracy of curvature radius in this mathematical ...
贺静, 夏尊凤, 唐勇, 张志强
doaj
Optimal Design of Single-stage Double-arc Spiral Bevel Gear Nutation Reducer
Jixie chuandong, 2020 According to the nutation motion principle，a new single-stage double circular-arc spiral bevel gear nutation reducer with simple structure and large transmission ratio is designed， and its transmission ratio calculation formula is obtained.
Zheng Lin +3 more
doaj
Micro- and nanostructure of human teeth : a synchrotron radiation-based X-ray study [PDF]
, 2014 The anisotropic composite nature of human teeth guarantees their function for decades under high mechanical loads and adverse chemical conditions. Even more so since only marginal remodelling and repair mechanisms take place in adult teeth.
Deyhle, Hans
core +1 more source