Results 121 to 130 of about 270,247 (224)

Longitudinal associations between school absence and mental health problems in adolescents in England: a retrospective cohort study using linked administrative data

open access: yesChild and Adolescent Mental Health, EarlyView.
Background School absence is associated with mental health problems in adolescents, but most studies are cross‐sectional. Longitudinal studies where school absence precedes mental health problems are needed to infer whether school absence is associated with later mental health problems.
Sophie Epstein   +7 more
wiley   +1 more source

A revised classification system of the marronoid clade of spiders (Araneae), based on dense sampling phylogenomics and comparative morphology

open access: yesCladistics, EarlyView.
Abstract The marronoid clade is a globally distributed, ecologically diverse group of spiders. It is an important faunal component in both natural and synanthropic environments, and even found in aquatic and extreme habitats such as desert salt flats. The systematics of the marronoid clade has been notoriously unstable due to the widespread character ...
Jonas O. Wolff   +10 more
wiley   +1 more source

Rolling mill roll design [PDF]

open access: yes, 2001
In this thesis, some previously published experimental and theoretical studies of hot rolling are reviewed. A thorough understanding of the available roll design methods, and conditions of their application is extremely important in order to achieve the ...
Jing, Limei
core  

Patience Stones: Material Encounters for Slow Currents of Pedagogy

open access: yesInternational Journal of Art &Design Education, EarlyView.
Abstract This article moves across sites in Canada and Japan with the practice of making Patience Stones (Sang‐e Saboor), a biodegradable, dough‐based artistic and pedagogical object that invites artist–teachers and artist–learners into with‐nessing and slow becoming.
Marzieh Mosavarzadeh, Ken Morimoto
wiley   +1 more source

Influence of the Type of Groove, Weaving and Rolling Direction on the Angular Distortion in Robotic GMAW-P Aluminum Welding

open access: yes, 2014
The industry's interest in having a greater control of the deformations caused by welding is due to the geometric and dimensional tolerances been more and more precise in the project specifications, motivating the manufacturing engineering to develop ...
Coraini, Rafael   +2 more
core  

Human cerebral arterial morphogenesis explored by 3D microscopic imaging of cleared embryos: Bridging the gap between embryonic and adult anatomy

open access: yesJournal of Anatomy, EarlyView.
We provide a description of human embryonic cerebral arterial development based on whole‐mount immunostaining, tissue clearing, three‐dimensional (3D) light‐sheet microscopy imaging, and anatomically informed virtual segmentation of human embryos. Findings are compared with adult radiological anatomy. We provide a detailed account of the development of
Eimad Shotar   +30 more
wiley   +1 more source

Re-scheduling in railways: the rolling stock balancing problem [PDF]

open access: yes
This paper addresses the Rolling Stock Balancing Problem (RSBP). This problem arises at a passenger railway operator when the rolling stock has to be re-scheduled due to changing circumstances. These problems arise both in the planning process and during
Dekker, R.   +4 more
core  

Location of an acoustic emission source in a radially loaded deep groove ball-bearing

open access: yes, 1998
This paper describes a deep groove ball-bearing analysis which has been developed to simulate acoustic emission occurring during ball-bearing operation.
Yoshioka, T, Nélias, D
core   +1 more source

Retention characteristics of individually milled bar systems with customized patrices: An in vitro comparison of electroplated and friction‐based retention concepts

open access: yesJournal of Prosthodontics, EarlyView.
Abstract Purpose This in vitro study examined the initial and long‐term retention behavior of individually milled bar (IMB) systems combined with customized patrices (CPs), contrasting electroplated patrices (EP), and friction pin patrices (FPP) concepts.
Helene Bacher   +5 more
wiley   +1 more source

The Surface Geometry of Rollers with Skew Rolling of Steel Balls

open access: yes, 2014
[[abstract]]The ball shaping process is considered from a geometric viewpoint as a meshing pair of conjugate surfaces at the precise rolling stage. This viewpoint offers a simple method and procedure for determining the groove design of each forming roll
Yang, Shyue-Cheng; Chen, C. K.
core  

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