Results 51 to 60 of about 54,106 (229)

Coordinated Architectural and Chemical Reinforcement in the Crushing Mandible of a Soldier Termite

open access: yesAdvanced Functional Materials, EarlyView.
The crushing mandible of a soldier termite withstands substantial biting loads despite lacking mineral. Its cuticle is partitioned: convex teeth pair hardness and zinc enrichment with aligned chitin fibers for contact durability, while stiffer concave regions between teeth carry bending loads.
Andrew Tran Nguyen   +16 more
wiley   +1 more source

Chitin‐Derived Carbon‐Metal Functional Materials

open access: yesAdvanced Functional Materials, EarlyView.
Functional carbon materials are synthesized from combination of biopolymer (chitin) and iron precursors. The resultant material exhibits superior surface area and adsorptive properties compared to carbon materials synthesized directly from pure chitin.
Herry Fang   +7 more
wiley   +1 more source

Abrasión [PDF]

open access: yes
La Abrasión es el desgaste de la estructura dentaria causada por frotado, raspado o pulido provenientes de objetos o sustancias introducidas en la boca que al contactar con los dientes generan la pérdida de los tejidos duros a nivel del límite ...
González, Stella Maris   +1 more
core  

Factores Mecánicos y Abrasión Dental en pacientes atendidos en el Centro de Salud Andrés de Vera [PDF]

open access: yes, 2011
La abrasión dental es un desgaste que se da en los tejidos mineralizados del diente, a causa de factores mecánicos producidos por objetos extraños introducidos continuamente en la boca.
Alarcón Barcia, Alda Noelia
core   +4 more sources

Load Distributing Metamaterials Via Discrete Optimization

open access: yesAdvanced Functional Materials, EarlyView.
Mechanical metamaterials are computationally optimized to homogenize transmitted forces by minimizing the spread of reaction forces. The resulting architectures transform localized loading into broader, more uniform force distributions and experimentally demonstrate robust load spreading under quasi‐static and impact loading.
Andrea Detry   +6 more
wiley   +1 more source

The effect of pleural abrasion on the treatment of primary spontaneous pneumothorax: a systematic review of randomized controlled trials.

open access: yesPLoS ONE, 2015
BackgroundPleural abrasion has been widely used to control the recurrence of primary spontaneous pneumothorax (PSP). However, controversy still exists regarding the advantages and disadvantages of pleural abrasion compared with other interventions in ...
Zhou-Gui Ling   +4 more
doaj   +1 more source

Engraved on the rocks—Aeolian abrasion of Martian mudstone exposures and their relationship to modern wind patterns in Gale Crater, Mars

open access: yesThe Depositional Record, 2020
In this contribution we report measurements and interpretations of aeolian abrasion features observed along the Mars Science Laboratory rover traverse at Gale Crater on Mars.
Juergen Schieber   +6 more
doaj   +1 more source

Melanin's Role in Balancing Mechanical Strength and Reproductive Output in Environmentally Stressed Fungal Spores

open access: yesAdvanced Functional Materials, EarlyView.
Melanin content directly controls fungal spore mechanical properties, with pigmented spores achieving rupture forces two orders of magnitude higher than hyaline spores. Environmental stress drives this quantity‐quality tradeoff; stressed species invest energy in melanin‐reinforced, mechanically superior thick‐walled, super‐hydrophobic spores, while ...
Atul Agrawal, Steven E. Naleway
wiley   +1 more source

Advances in Solution‐Processed Textile Triboelectric Nanogenerators: Ink Formation, Processing Strategies, Applications, and Challenges

open access: yesAdvanced Functional Materials, EarlyView.
Advanced ink systems for solution‐processed textile triboelectric nanogenerators are systematically summarized, spanning conductive, tribo‐negative, and tribo‐positive layers. By connecting ink chemistry, deposition methods, and device function, the present review reveals the key governing principles of solution development and highlights practical ...
Xinlong Sun, Stephen Beeby
wiley   +1 more source

Experimental study and prediction of abrasion resistance of hydraulic concrete

open access: yesCase Studies in Construction Materials
To predict the abrasion resistance of hydraulic concrete efficiently and accurately, this study analyzes the physical abrasion process of hydraulic concrete based on the underwater steel ball method.
Qian Chen   +7 more
doaj   +1 more source

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