Environmental heterogeneity has been hypothesized to influence levels of genetic variation but the effect of heterogeneity depends on (i) the form of heterogeneity, (ii) whether ecologically relevant or neutral loci are being considered, and (iii) the genetic basis of ecological adaptation. We surveyed genome-wide SNP diversity in replicate experimental Drosophila melanogaster populations with ...

The objectives of this study were to 1) compare four models for breeding value prediction using genomic or pedigree information and 2) evaluate the impact of fixed effects that account for family structure. Comparisons were made in a Nellore-Angus population comprising F2, F3 and half-siblings to embryo transfer F2 calves with records for overall temperament at weaning (TEMP; n = 769) and Warne...

over the last de cades of the twentieth century. Time and again, newspaper headlines have lamented what the New York Times called the “downsizing of America”:1 wage freezes and massive layoff s; closed factories and jobs moved abroad; permanent employees replaced by contingent workers. Wages stagnated and access to benefi ts declined. Th e possibility of lifetime employment was replaced with th...

BACKGROUND Classic self-curing temporary cements obstruct the translucence of provisional restorations. New dual-cure esthetic temporary cements need investigation and comparison with classic cements to ensure that they are equally retentive and provide adequate translucence. The objective is to analyze by means of traction testing in a in vitro study the retention of five temporary cements. ...

The maturity of oil palm Fresh Fruit Bunches (FFB) is considered to be a significant factor that affects the profitability and salability FFB. Typical methods grading FFB consist physical fresh fruit, which time-consuming expensive, results are prone human error. Therefore, this research attempts formulate thermal imaging method indicate precise fruits. A total 297 FFBs were collected. samples ...

reported in (1) as the upper limit of viscosity of superfluid helium. For comparison, the viscosity of normal fluid He is 2 10 PaIs. This calculation invalidates this soft shear mode interpretation and supports the superflow interpretation. The smooth decay in D s /D with increasing temperature near 250 mK makes it difficult to determine with precision the supersolid transition temperature T c ...

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Many round-based chaotic image encryption algorithms employ the permutation-diffusion structure. Schemes using this structure have been found insecure when the iteration round is equal to one and the secret permutation of some existing ones can be recovered even a higher iteration round is adopted. In this paper, we present a single round permutation-diffusion chaotic cipher for gray image, in ...

BACKGROUND The heat produced by provisional restoration materials may injure the dental pulp. This study measured and compared peak temperatures during polymerization of 5 materials used in the fabrication of provisional restorations. METHODS The tested materials were 2 self-curing resins (Integrity and Protemp) and 3 dual-cure resins (Iso-Temp, TCB Dual Cure and Provipont DC). A mould the si...