Results 151 to 160 of about 831,737 (308)

Role of the micro/macro structure of welds in crack nucleation and propagation in aerospace aluminum-lithium alloy [PDF]

open access: yes
Al-Li alloys offer the benefits of increased strength, elastic modulus and lower densities as compared to conventional aluminum alloys. Martin Marietta Laboratories has developed an Al-Li alloy designated 2195 which is designated for use in the cryogenic
Talia, George E.
core   +1 more source

Dentoalveolar Changes in the Premolar Region After Two Maxillary Expansion Protocols

open access: yesOrthodontics &Craniofacial Research, EarlyView.
ABSTRACT Objectives To evaluate the dentoalveolar effects on the upper first premolars after two maxillary expansion protocols—rapid maxillary expansion (RME) and alternate rapid maxillary expansion and constriction (Alt‐RAMEC)—before and 6 months after treatment.
Jaqueline Peter   +6 more
wiley   +1 more source

Flow‐Made Fertilisers for Cherry Belle Radish (Raphanus sativus L.) Growth in Acidic and Calcareous Soils

open access: yesJournal of Sustainable Agriculture and Environment, Volume 5, Issue 2, June 2026.
ABSTRACT Phosphorus (P) availability is strongly constrained in both acidic and calcareous soils due to fixation reactions, reducing nutrient‐use efficiency and driving excessive fertiliser inputs. This study develops and evaluates a series of chitosan–apatite–citrate (CAC) fertilisers prepared using four continuous‐flow manufacturing strategies: a ...
Tu Nguyen Quang Le   +6 more
wiley   +1 more source

Forging Technical Career Skills in Virtual Reality: How Immersion Shapes Learning and Engagement

open access: yesInternational Journal of Training and Development, Volume 30, Issue 2, Page 192-201, June 2026.
ABSTRACT Virtual reality (VR) is rapidly gaining popularity in vocational education and training (VET). We conducted a between‐subjects experiment to explore how VR modality (headset vs. desktop VR) influences trainee reactions and performance for a simulated welding task.
Benjamin D. Blachly   +3 more
wiley   +1 more source

A Simplified Technique for the Fabrication of Esthetic and Functional Space Maintainers in Pediatric Dentistry

open access: yesJournal of Esthetic and Restorative Dentistry, Volume 38, Issue 6, Page 1166-1173, June 2026.
ABSTRACT Introduction Premature loss of primary molars remains a frequent clinical problem in pediatric dentistry and may lead to space loss, occlusal disturbances, and the need for future orthodontic intervention. Conventional space maintainers, such as the band‐and‐loop appliance, are effective in preserving arch length but do not restore occlusal ...
Luciana Duarte Caldas   +3 more
wiley   +1 more source

Hierarchical Reconfigurable Metasurface Based on Scenario‐Guided Functional Modules and Programmable Core

open access: yesAdvanced Science, Volume 13, Issue 28, 18 May 2026.
This paper proposes a hierarchical reconfigurable metasurface architecture (HRMA) to achieve comprehensive electromagnetic parameter modulation and on‐demand polymorphic function switching. The reconfigurable metasurface is divided into a programmable core (PC) and scenario‐guided functional modules (FMs), exhibiting significant flexibility and ...
Lihao Zhu   +11 more
wiley   +1 more source

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