How to improve communication with deaf children in the dental clinic

It may be difficult for hearing-impaired people to communicate with people who hear. In the health care area, there is often little awareness of the communication barriers faced by the deaf and, in dentistry, the attitude adopted towards the deaf is not always correct. A review is given of the basic rules and advice given for communicating with the hearing-impaired. The latter are classified in three groups ? lip-readers, sign language users and those with hearing aids. The advice given varies for the different groups although the different methods of communication are often combined (e.g. sign language plus lip-reading, hearing-aids plus lip-reading). Treatment of hearing-impaired children in the dental clinic must be personalised. Each child is different, depending on the education received, the communication skills possessed, family factors (degree of parental protection, etc.), the existence of associated problems (learning difficulties), degree of loss of hearing, age, etc

南極内陸域における雲と放射の研究

Supplementary Methods. (PDF 686 kb

How to blow up a massive star

Unweighted UniFrac distance between benign, hyperplasia, and endometrial cancer cohorts. (PDF 8 kb

Variasi Temperatur Pencampuran Terhadap Parameter Marshall Pada Campuran Lapis Aspal Beton

This study was conducted to determine the effect of temperature variations on the mixing processof the asphalt concrete AC-WC (Asphalt Concrete-Wearing Course) subtle gradations in themiddle limit and lower limit of the Marshall parameters with reference to specifications of BinaMarga, 2010.From the results of experiments conducted that the optimum asphalt content is used to middle limitusing a asphalt content of 5,7% and 6,8% for the lower limit after that mixing was done usingtemperature variation of 120 o C, 130 o C, 140 o C, 150 o C, and 160 o C.To a mixture of Laston AC-WC subtle gradations middle limit grading 5,7% asphalt contentmixing temperature using a temperature of 120 o C, 130 o C, 140 o C, 150 o C, 160 o C and still meet allstandards of marshall parameters. Ideal mixing temperature variations in the middle limit ofmixing temperature 150 o C-160 o C. While the lower limit to the level of 6,8% asphalt contentmixing temperatures between 120 o C-160 o C did not meet the specifications, because the MQ valuebelow the minimum value of 250 kg / mm

Stats.R

R functions written for analysis of microbiome data

Systematic Study of the Reaction Kinetics for HMX

The reaction process of octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) in wide temperature and pressure ranges is simulated by molecular dynamics. A set of postprocessing programs is written to evaluate the intermediate molecules and chemical reactions. On the basis of these evaluations, the reaction rates, reactive Hugoniot curves, and detonation wave profile are calculated. The detonation velocity and detonation pressure are determined as 9984 m/s and 38.3349 GPa, in agreement with the experimental results, 9110 m/s and 39.5 GPa. The width of the reaction zone is 10 μm, and the main products are N₂, H₂O, and CO₂. We find some molecules play an important role in intermediate reactions but are not exhibited in final products, such as N₂O₂, N₂O₅, and C₃H₃N₃

Theoretical Study of the Interfacial Force-Field, Thermodynamic Property, and Heat Stress for Plastic Bonded Explosives

The force-fields across the TATB/(paraffin, fluoropolymer), RDX/TATB, RDX/graphite and fluoropolymer/graphite interfaces are obtained by first-principles calculations and parameter optimization. Based on them, the composite materials are simulated in atomistic scale, and a set of thermodynamic properties are calculated, including the heat capacity, thermal expansion coefficient, Grüneisen coefficient, isothermal curve, Hugoniot curve, pressure field, and tension field. We find that the thermal expansion coefficient difference across the explosive/additive interface induces interfacial tension in warming process, the interfacial tension induces positive pressure on the explosive particle, and the positive pressure restrains the thermal expansion of the composite material. A physical picture to describe the influence mechanism of the interface effect on the composite property is obtained

Theoretical Insights into H₂ Activation and Hydrogen Spillover on Near-Surface Alloys with Embedded Single Pt Atoms

Despite extensive studies of hydrogen spillover on single-atom alloy surfaces, a thorough understanding of the structure–activity relationship is still lacking. Here, we investigate H2 dissociation and diffusion of the dissociated H species on the near-surface alloys embedded with single Pt atoms using density functional theory (DFT) calculations and ab initio molecular dynamics (AIMD) simulations. The DFT results indicate that subsurface alloying with early transition metals (X) (Pt1-X/Cu(111)) can generally promote the initial hydrogen spillover but suppress the H2 dissociation process, showing an intractable trade-off effect. While the DFT-calculated H2 dissociation barrier on Pt1-Co/Cu(111) is higher than that on Pt1-Ni/Cu(111), the AIMD results show that the H2 dissociation probability on the Pt1-Co/Cu(111) surface is much higher than that on Pt1-Ni/Cu(111). The trajectory analysis shows that H2 molecules on Pt1-Co/Cu(111) can adopt a more convenient conformation for dissociation when approaching the so-called close-range physisorption zone (CPZ) due to the relatively flat topography of the potential energy surface, thus increasing the H2 dissociation probability compared to the case on Pt1-Ni/Cu(111). This work provides a clear picture for understanding the structure–activity relationships of H2 activation and hydrogen spillover over single-atom catalysts. More importantly, it highlights an overlooked but essential role of the dynamic orientation of the reactant in heterogeneous catalysis

Theoretical Insights into H₂ Activation and Hydrogen Spillover on Near-Surface Alloys with Embedded Single Pt Atoms

Despite extensive studies of hydrogen spillover on single-atom alloy surfaces, a thorough understanding of the structure–activity relationship is still lacking. Here, we investigate H2 dissociation and diffusion of the dissociated H species on the near-surface alloys embedded with single Pt atoms using density functional theory (DFT) calculations and ab initio molecular dynamics (AIMD) simulations. The DFT results indicate that subsurface alloying with early transition metals (X) (Pt1-X/Cu(111)) can generally promote the initial hydrogen spillover but suppress the H2 dissociation process, showing an intractable trade-off effect. While the DFT-calculated H2 dissociation barrier on Pt1-Co/Cu(111) is higher than that on Pt1-Ni/Cu(111), the AIMD results show that the H2 dissociation probability on the Pt1-Co/Cu(111) surface is much higher than that on Pt1-Ni/Cu(111). The trajectory analysis shows that H2 molecules on Pt1-Co/Cu(111) can adopt a more convenient conformation for dissociation when approaching the so-called close-range physisorption zone (CPZ) due to the relatively flat topography of the potential energy surface, thus increasing the H2 dissociation probability compared to the case on Pt1-Ni/Cu(111). This work provides a clear picture for understanding the structure–activity relationships of H2 activation and hydrogen spillover over single-atom catalysts. More importantly, it highlights an overlooked but essential role of the dynamic orientation of the reactant in heterogeneous catalysis

Theoretical Insights into H₂ Activation and Hydrogen Spillover on Near-Surface Alloys with Embedded Single Pt Atoms

Despite extensive studies of hydrogen spillover on single-atom alloy surfaces, a thorough understanding of the structure–activity relationship is still lacking. Here, we investigate H2 dissociation and diffusion of the dissociated H species on the near-surface alloys embedded with single Pt atoms using density functional theory (DFT) calculations and ab initio molecular dynamics (AIMD) simulations. The DFT results indicate that subsurface alloying with early transition metals (X) (Pt1-X/Cu(111)) can generally promote the initial hydrogen spillover but suppress the H2 dissociation process, showing an intractable trade-off effect. While the DFT-calculated H2 dissociation barrier on Pt1-Co/Cu(111) is higher than that on Pt1-Ni/Cu(111), the AIMD results show that the H2 dissociation probability on the Pt1-Co/Cu(111) surface is much higher than that on Pt1-Ni/Cu(111). The trajectory analysis shows that H2 molecules on Pt1-Co/Cu(111) can adopt a more convenient conformation for dissociation when approaching the so-called close-range physisorption zone (CPZ) due to the relatively flat topography of the potential energy surface, thus increasing the H2 dissociation probability compared to the case on Pt1-Ni/Cu(111). This work provides a clear picture for understanding the structure–activity relationships of H2 activation and hydrogen spillover over single-atom catalysts. More importantly, it highlights an overlooked but essential role of the dynamic orientation of the reactant in heterogeneous catalysis