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Showing 1 to 20 of 39 for “"Micropore"”.
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Investigations of the assembly and function of the Toxoplasma micropore
… with electro-dense material around it, called micropores. Therefore, it was suggested that *Toxoplasma* would have clathrin-dependent endocytosis through this pore. Later studies proved that *Toxoplasma* ingests material from its environment in intra and extracellular stages. Nevertheless, …
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Development of light actuated chemical delivery platform on a 2-D array of micropore structure
<p>Localized chemical delivery plays an essential role in the fundamental information transfers within biological systems. Thus, the ability to mimic the natural chemical signal modulation would provide significant contributions to understand the functional signaling pathway of biological cells and …
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The role of micropore size and chemical nature of the pore surface on the adsorption properties of activated carbon fibers
… progressive activation increased the average micropore size and specific surface area and that adsorption at low concentrations depends not on the available specific surface area but on the average micropore size. This work was extended to examines the adsorption properties of the same series …
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The influence of microporosity on the mechanical properties of bulk, scaffold, and composite scaffold biphasic calcium phosphate
… The elastic properties of bulk BCP with varying micropore size and fraction were analyzed using resonant frequency testing. The compressive mechanical strength and fracture mechanisms of monolithic BCP and composite BCP/PMMA scaffolds with varying micropore size and fraction were characterized. …
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Roles of Background Compound Molecular Size and Adsorbent Pore Size Distribution in Competitive Adsorption on Activated Carbon
… adsorbent which consisted of extensive secondary micropore and mesopore volumes, labeled as Pellet II, were evaluated for atrazine adsorption in the presence of CR in order to assess the role of PSD on competitive adsorption. The capacity for CR adsorption correlated well with pore volume between …
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Evaluating Competitive Sorption Mechanisms of Volatile Organic Chemical Mixtures in Soils and Sediments Using Polymers and Zeolites
… research suggests that VOC mixtures compete for micropore sorption sites present in soils and sediments. It is hypothesized that the size and polarity of these micropores control competitive sorption and mass transfer rates of sorbate mixtures. To test this hypothesis, aqueous isotherms and …
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The Role of Pore Size Distribution in Competitive Adsorption on Activated Carbon
… the adsorbent must have a wide range of micropore sizes, including pores of similar size to the target compound.
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The effect of pore size and porosity on capillary pressure in microporous hydroxyapatite samples
… in part due to capillary forces induced by the micropores. The micropore-induced capillary forces can self load cells into the scaffolds. In this study, the effect of micropore size and porosity on capillary forces was investigated. Rectangular shaped HA samples that were either 50% or 60% …
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Microstructure-induced capillary force effects on penetration and release in hydroxyapatite bone scaffolds
… and mineralized bone have been observed inside micropores. However, until now, a mechanism to explain the increased bone formation and the presence of cells has not been proven. In this dissertation I present the first mechanism that explains enhanced bone formation and integration in …
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Thermally stable ZSM-5 zeolite materials with new microporosities
… thermally stable zeolite materials with smaller micropores at 4.9 A or larger at 5.5 A than those of the parent ZSM-5 zeolites was possible. These final materials were obtained by a process which involved the following additional steps: (i) reinsertion into the desilicated ZSM-5 zeolite of a well …
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ΜΕΛΕΤΗ ΚΑΙ ΠΑΡΑΣΚΕΥΗ ΚΥΨΕΛΩΤΟΥ ΚΟΝΙΟΔΕΜΑΤΟΣ ΥΔΡΟΘΕΡΜΙΚΗΣ ΚΑΤΕΡΓΑΣΙΑΣ ΜΕ ΜΕΙΩΜΕΝΕΣ ΣΥΣΤΟΛΕΣ ΞΗΡΑΝΣΗΣ
… B. ON THE BASIS OF MINERALOGICAL COMPOSITION AND MICROPORE SIZE DISTRIBUTION OF A.C.C., THE DRYING SHRINKAGE VALUES SHOULD BE WITHIN THE REALM OF PREDICTABILITY. A PRACTICAL APPLICATION OF THE STUDY HAS BEEN THE SUCCESSFUL UTILIZATION OF PTOLEMAIS FLY ASH IN THE DOMESTIC A.C.C. PRODUCTION.
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Application of the transformation of 1,2,4-Trimethylbenzene to monitor the chemical vapour deposition of Tetraethoxysilane over ZSM-5
… respect to the reaction network, the role of the micropore space and the response to CVD treatments and Silicalite I coating. A generalised interpretation of the effect of modifications of the external surface activity and the pore mouth size on activity and shape selectivity of zeolites is …
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Preparation and characterization of mesoporous aluminosilicates from Ca-A zeolite
… in order to enlarge the pore size of the micropore-type zeolite into a mesopore type: (a) 0.2N HCl acid treatment at 80$\sp\circ$C from which the time of exposure to the acid medium has a great influence on the pore size distribution of the resulting materials. (b) A hydrothermal treatment …
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Preparation, Evaluation and Structural Modeling of Carbon-Based Adsorbents Used on Natural Gas Vehicles
… in natural gas storage is investigated. Micropore volume and bulk density of carbon adsorbents are found to be the most important factors for achieving a high volumetric methane storage capacity. Modeling of nitrogen and methane adsorption onto a porous carbon is also conducted to …
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Studies of the formation of homogeneous mixed silicon-titanium/zirconium oxides by the sol-gel route
… 900°C (ca 54-21Å for monoliths), although the micropore volume does decrease (0.04-0.0cm3g-1) suggesting that smaller pores are destroyed by the heating process. For SiO2-TiO2 powders, the average pore diameter was ca IOÅ larger than for the corresponding monolith suggesting that small pores …
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The development and characterization of tailored, high surface area adsorbents for enhanced adsorption
… kinetics), high surface area, narrow micropore size distribution, and ease for in-situ reactivation. Despite these advantages, the ACFs were precluded to use in niche markets because of their high cost $(>\$100$/lb.) and their poor wear properties. This thesis describes a novel …
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Predicting thermodynamic and transport parameters for metal contaminant sorption to hydrated metal oxides in aquatic systems
… by slow intraparticle diffusion along the micropore walls. Adsorption is an endothermic physical reaction that can be represented by one average mechanism or site independent of pH and adsorbate concentration. Accordingly, the sorbed ions retain their primary hydration shell and form an …
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Aromatization of n-hexane by platinum containing molecular sieves and distribution and motion of organic guest molecules in zeolites
… reveal that Pt can be loaded into the micropores of molecular sieves with both charged and neutral frameworks. Pt containing molecular sieves were tested as catalysts for the aromatization of n-hexane at 460 - 510°C and atmospheric total pressure in order to study the influence of Pt …
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Die Porenstruktur von Kohlen
… thereby calculated. These parameters include: micropore volumes, pore volume distributions, pore mean diameter, fractal dimension, radius of gyration, specific surfaces (LANGMUIR- BET-, CI-, fractal surfaces), characteristic adsorption energies and heterogeneity factors using SANS (Small Angle …
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Directed lithium transport in high capacity lithium-ion battery electrodes
… reactions. In chapter 5 we examine encapsulated micropore-modified silicon anodes that define lithium mass-transfer dynamics to constrain strain evolution and improve capacity retention during (dis)charge cycling. Fully integrated cells incorporating this silicon anode and a commercial grade …
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