BACKGROUND Colour degradation is a major problem in maxillofacial silicone elastomers. Recent studies have focused on colour stability and the mechanical properties of the silicone elastomers. A colour match is also essential for the acceptance of the prosthesis by the patient. The aim of this study is to assess the colour degradation of the silicone elastomer after being moulded in different c...

The availability of a complete peach genome assembly and three different peach genome sequences created by our group provide new opportunities for application of genomic data and can improve the power of the classical Quantitative Trait Loci (QTL) approaches to identify candidate genes for peach disease resistance. Brown rot caused by Monilinia spp., is the most important fungal disease of ston...

in this work, the waste stone sludge obtained from the granite and marble stone processing factories was used for the manufacture of artificial stones using vibratory compaction in a vacuum environment. the results obtained showed that water absorption and density increased, and the flexure, compressive, and tensile strengths decreased with increase in the content of the waste stone sludge. the...

Based on analyses of terpenoids, nrDNA and trnC-D SNPs as well as morphology and ecology, a new cryptic species, Juniperus maritima, from the Puget Sound region is recognized. The species, previously included in J. scopulorum, is characterized by having seed cones that mature in one year (14-16 months), seeds usually exserted from the cone, obtuse scale leaf tips, usually reniform seed cones, s...

Machine-made sand was significantly different from natural in terms of particle gradation, morphology, composition and structure. The concrete composed mechanical greatly influenced by the physical chemical properties gravel its microscopic appearance macroscopic properties. Therefore, this paper aimed to systematically analyze big data machine-made performance testing, focus on fluctuation fin...

Quaternary coastal-terrestrial deposits from Aupouri and Karikari Peninsulas, northern North Island (New Zealand), and from Sapelo Island, Georgia (USA), reveal sedimentary structures produced by plant roots that provided habitats suitable for root-sucking, deposit-feeding, burrowing, brooding and other terrestrial invertebrate activities. The structures are typically large (<1 to >2 m in lengt...

Sustainability challenges and opportunities With more than one-half of the world’s growing population (now ∼ 7 billion) living in cities, a sustainable physical infrastructure is central to improving and maintaining a high quality of life. Concrete is an important component of this infrastructure, with a current annual per capita consumption of about 2.8 tonnes (t) ( Figure 1 ). Concrete powers...