CO₂ Adsorption Behavior and Kinetics on Amine-Functionalized Composites Silica with Trimodal Nanoporous Structure

A trimodal porous support with special trimodal pore structure has been prepared by physically mixing the silica gel (HPS) and SBA-15 and then devoted to fabricate TEPA<b>-</b>functionalized adsorbent for CO₂ capture. The trimodal multistage mesopores structure can promote the TEPA dispersion and mitigate the mass-transfer resistance in the adsorbent and, hence, improve capture performance, compared to the single mesoporous support. The influence of the mass ratios of HPS to SBA-15, amine loaded amount, CO₂ concentration, adsorption temperatures, and water vapor were studied. The CO₂-saturated adsorption amount of 5.05 mmol/g was obtained at 75 °C in dry N₂ flow containing 15 vol % CO₂ when the mass ratio of SBA-15 to HPS was 1:2 with 50 wt % TEPA loadings. Moreover, the CO₂-saturated adsorption amount presented a 16% improvement in humid N₂ flow containing 15 vol % CO₂ flow at 75 °C. In addition, the S2HPS-TEPA50% also demonstrated good stability after 10 adsorption/desorption cycles. Based on in situ DRIFTS results of CO₂ adsorption/desorption process, the reaction mechanism of CO₂ with active sites was proposed by analyzing the relationships among variations of intensities of functional groups during the reaction. The intraparticle diffusion model was adapted to study CO₂ kinetics and the intraparticle diffusion prediction indicated that boundary layer diffusion was the rate-controlling step in the process of CO₂ capture. Overall, these results indicate that S2HPS-TEPA50% is promising for CO₂ capture

Characteristics of Competitors in Natural Survivals

Title: Characteristics ofcompetitors in natural survivals Aim: This graduation paper brings a comprehensive overview about the sport branch "natural survival", its organization, structure and race character. The main aim is to :find the characteristics of a group of competitors, their preparation, equipment, way of living and specializations. Method: Research material for our graduation paper has been collected through: Results: Quantitative data collection - a questionnaire. Document analysis, analysis of written materials and websites - qualitative content analysis. Preparation ofcompetitors for these races is not speci:fic. Race attractiveness decides the most about the competitors' participation in individua! races, and race duration decides the least. It is possible to include these races for testing skills, abilities and team cooperation for common sports people with the doser relation to outdoor sports. Comparison of number of competitors in the last years has confinned that the number ofcompetitors has settled down. A new sport branch "natural survival" has been formed. Keywords: Natural survival, sociological research, competitors' preparation and equipment, communication. Strana

Additional file 14: Figure S4. of Bone-associated gene evolution and the origin of flight in birds

Body mass association with ω (dN/dS). Avian cladogram showing from CoEvol, the labels are the estimated ω (minimum maximum) for each branch on top and the estimated weight (minimum maximum). (DOC 423 kb

Additional file 15: Table S11. of Bone-associated gene evolution and the origin of flight in birds

Covariance between dS, ω (dN/dS), gc content, and the three body mass measures (minimum, maximum and average) in 45 bird genomes using gene-based tree. The upper triangle shows the values obtained for all birds and the lower triangle excluding flightless birds. Each cell represent the covariance values and posterior probability are the bracketed values, posterior probability (** - < = 0.025 or > =0.975; * - < =0.05 or > =0.95) are highlighted in bold for the statistically significant correlations. (DOC 35 kb

Additional file 16: Table S12. of Bone-associated gene evolution and the origin of flight in birds

Covariance between dS, ω (dN/dS), gc content, and the three body mass measures (minimum, maximum and average) in 39 mammalian genomes using gene-based tree. The upper triangle shows the values obtained for all mammals and the lower triangle excluding bats. Each cell represent the covariance values and posterior probability are the bracketed values, posterior probability (** - < = 0.025 or > =0.975; * - < =0.05 or > =0.95) are highlighted in bold for the statistically significant correlations. (DOC 35 kb

Additional file 19: Table S13. of Bone-associated gene evolution and the origin of flight in birds

Estimation of dN and dS for each branch under Model 0. For each branch, average of dN and dS and the corresponding standard deviation. (DOC 165 kb

Entropy-Induced Localization and Sliding Dynamics of Rings on Polyrotaxane

Regulating the position and sliding dynamics of rings on the polyrotaxane (PR) backbone plays a crucial role in determining the properties and/or functions of PR and PR-based soft materials. In this work, we use molecular dynamics simulations to reveal that the features of localization and sliding dynamics of rings on a PR modeled by a rod–coil–rod triblock copolymer are regulated by the entropy effect of the coil block. The distribution of the rings along the rod–coil–rod PR backbone is found to be highly heterogeneous and can be described by a two-state model characterized by a (free) energy gap, ΔE, which depends on the three characteristic parameters of the PR system, ΔE = ΔE(α, μ, ρring), where α is the ratio of the rod to the coil strand length, μ is a quantity of measuring the stretching degree of the coil block, and ρring is the overall ring coverage along the PR backbone. A theoretical model is proposed to describe the origin of this universality, the prediction of which is quantitatively consistent with simulation results for the single-ring rod–coil–rod PR system. The existence of an energy gap also gives a model for the dynamics of ring sliding along the PR backbone

Additional file 4: Table S2. of Bone-associated gene evolution and the origin of flight in birds

Positively selected sites of bone-associated genes in Mammalian dataset after multiple testing correction. The alignment length is on Amino acids (aa). Gene in bold are positively selected under the comparison M2a vs M1a. Q-value estimations for multiple testing are represented as positive selected (1) and negative selected (0). (DOC 88 kb

Additional file 11: Table S8. of Bone-associated gene evolution and the origin of flight in birds

Results from the nested models (M0, M1a, M2a) likelihood ratio test results PAML from Mammalian dataset excluding bats. The alignment length is on Amino acids (aa). Bold represents statistical significance (p < 0.05). Q-value estimations for multiple testing are represented as positive selected (1) and negative selected (0). (DOC 162 kb

Additional file 3: Figure S2. of Bone-associated gene evolution and the origin of flight in birds

Genomic location of bone-associated genes. The circular ideogram represents the genomic location of bone-associated genes in four of the studied species. Each end-line represents the location of the bone-associated genes. Blue indicates human chromosomes (mammal representative). Dark orange the zebra finch (flying species), green the chicken and yellow the turkey (flightless species). (DOC 896 kb