Results 41 to 50 of about 97,202 (285)

Machine Learning-Assisted Hardness Prediction of Dispersion-Strengthened Tungsten Alloy

Metals
Hardness, as a typical mechanical property of dispersion-strengthened tungsten alloy, is influenced by various coupled factors. This paper aims to identify the key factors affecting the hardness of the dispersion-strengthened tungsten alloys with ...
Shaowu Dai, Chong Chen, Cong Zhang, Shizhong Wei, Beibei Han, Changji Wang, Kunming Pan, Liujie Xu, Feng Mao, Hua Yu   +9 more
doaj   +1 more source

Susceptibility of fluorotic enamel to dental erosion-abrasion

, 2023
Dental hard tissue conditions can be of pre- or post-eruptive nature, such as enamel fluorosis and erosive tooth wear (ETW), respectively. Dental enamel fluorosis is caused by the chronic and excessive intake of fluoride during enamel development ...
George J. ECKERT (16525406), Frederico Barbosa de SOUSA (10412345), Anderson Takeo HARA (5790746), Cristiane Araújo Maia SILVA (16525397), Esperanza Angeles MARTINEZ-MIER (16525400), Adam Benjamin KELLY (16525403)   +5 more
core   +1 more source

Impact of desensitizing/whitening toothpastes on tooth color change after abrasion and erosion–abrasion [PDF]

, 2022
OBJECTIVE To evaluate the impact of desensitizing toothpastes (D), their whitening versions (DW) and whitening toothpastes (W) on tooth color change. METHODS Tooth specimens were allocated into 11 groups (n = 10): 1. Artificial saliva (control);
Ítallo Emídio Lira Viana, Eric Mayer‐Santos, Thiago Saads Carvalho, Saads Carvalho, Thiago, Samira Helena Niemeyer, Bezerra, Sávio José Cardoso, Mayer-Santos, Eric, Scaramucci, Taís, Viana, Ítallo Emídio Lira, Leonardo Custódio de Lima, Niemeyer, Samira Helena, Sara Laís Pereira da Paz, da Paz, Sara Laís Pereira, Taís Scaramucci, de Lima, Leonardo Custódio, Sávio José Cardoso Bezerra   +15 more
core   +1 more source

Design and analysis strategies for robust microbiome ageing research

FEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik, İsmail Güderer, Yi Wang, Tayyaba Alvi, Prasoon Pandey, Handan Melike Dönertaş   +5 more
wiley   +1 more source

Effects of Different Toothpastes on the Nanomechanical Properties and Chemical Composition of Resin-Modified Glass Ionomer Cement and Composite Resin Restorations

Dentistry Journal, 2023
Purpose: This study evaluates the effects of different toothpastes on the nanohardness and chemical compositions of restorative materials and dental surfaces.
Mariana Dias Moda, Paulo Henrique Dos Santos, Nubia Inocencya Pavesi Pini, Leonardo Negri Furini, André Luiz Fraga Briso, André Assmann, Ticiane Cestari Fagundes   +6 more
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

Third abrasive wear mode: is it possible?

Journal of Materials Research and Technology, 2014
The objective of this paper is to propose an initial discussion on the characterization of a third abrasive wear mode. The results obtained in a previous work [1] under different test conditions revealed the occurrence of the superposition of the ...
Ronaldo Câmara Cozza
doaj   +1 more source

ABRASIVES AND POSSIBILITIES OF INCREASE IN EFFICIENCY OF ABRASIVE WATERJETS

MM Science Journal, 2016
The contribution focuses on the research into abrasive materials and possibilities of adjustment of their properties in order to increase the efficiency of the processes of machining and cutting with abrasive waterjets. Cutting ability of commonly available garnet concentrates and nontraditional products which are starting to access to the Czech market
Sitek, L. (Libor), Martinec, P. (Petr)
openaire   +3 more sources

The microbiome in human skin aging

FEBS Letters, EarlyView.
Age‐related skin changes encompass the well‐known visible phenotypic alterations, together with microbiome dysbiosis and a series of molecular aging hallmarks. These hallmarks characterize not only a fully stablished aged phenotype but also the skin aging process itself.
Manuel Huerta Arana, Cornelia Wiegand, Omid Omrani, Mario Fabri   +3 more
wiley   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

FEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source