Pore Scale Modeling of Rock Properties and Comparison to Laboratory Measurements
... classified into two opposite classes: inner pixel and surface (edge) pixel. Checking the connectivity of the 0 phase to the 0 phase in its 8 neighbors in 3D, the zero-connectivity pixels are inner points or isolated points. Eliminating those inner and isolated points from the original image gives th ...
... classified into two opposite classes: inner pixel and surface (edge) pixel. Checking the connectivity of the 0 phase to the 0 phase in its 8 neighbors in 3D, the zero-connectivity pixels are inner points or isolated points. Eliminating those inner and isolated points from the original image gives th ...
Electrokinetics of Polar Liquids in Contact with Nonpolar Surfaces
... Schematic diagrams summarizing the preparation of the testing channel. (a) The two end regions of the glass slides were covered by transparent tape (blue area) to protect the glass surface from silanization. (b) After silanization, the tapes were removed, and the channel was assembled with double-si ...
... Schematic diagrams summarizing the preparation of the testing channel. (a) The two end regions of the glass slides were covered by transparent tape (blue area) to protect the glass surface from silanization. (b) After silanization, the tapes were removed, and the channel was assembled with double-si ...
11_chapter 1
... and Barry Sharpless "for his work on chirally catalysed oxidation reactions" [1, 7]. ...
... and Barry Sharpless "for his work on chirally catalysed oxidation reactions" [1, 7]. ...
Heterogeneous catalysis (I)
... Surface energy of solids The coordination number is 12 for fcc and hcp and 8 for bcc, but, it is clear the smaller coordination of surface atoms (in the plane 4 for bcc and 6 for fcc and hcp). The resulting force unbalance at the surface is responsible of the interactions of the solid with the envi ...
... Surface energy of solids The coordination number is 12 for fcc and hcp and 8 for bcc, but, it is clear the smaller coordination of surface atoms (in the plane 4 for bcc and 6 for fcc and hcp). The resulting force unbalance at the surface is responsible of the interactions of the solid with the envi ...
Catalyst characterization: characterization techniques
... the same properties can be used, the preferable techniques, on the basis of our experience, are indicated. This choice, aiming to underline the practical application of characterization, is strengthened in the second part of this work, where the approach to specific problems will be examined. 1.2. M ...
... the same properties can be used, the preferable techniques, on the basis of our experience, are indicated. This choice, aiming to underline the practical application of characterization, is strengthened in the second part of this work, where the approach to specific problems will be examined. 1.2. M ...
Adhesion of Oral Streptococci from a Flowing
... cellulose acetate (Hawe Neos Dental, Gentilino, Switzerland) (ys = 58 mJ m-2) and glass (microscope slides, Menzel, FRG) ( y s = 109 mJ m-2). For details of the determination of surface free energy of solid surfaces see Busscher et al. (1983). The solid substrata were extensively cleaned before the ...
... cellulose acetate (Hawe Neos Dental, Gentilino, Switzerland) (ys = 58 mJ m-2) and glass (microscope slides, Menzel, FRG) ( y s = 109 mJ m-2). For details of the determination of surface free energy of solid surfaces see Busscher et al. (1983). The solid substrata were extensively cleaned before the ...
Spectroscopic Characterization of Mixed Fe−Ni
... overpotential of reaction and the stable activity. Corrigan et al. examined electrodeposited Ni−Fe catalysts in a mixed oxide system for their oxygen evolution capability.20 These electrodeposited films showed higher oxygen evolution activity compared to that of pure Ni or Fe oxide. Miller also inves ...
... overpotential of reaction and the stable activity. Corrigan et al. examined electrodeposited Ni−Fe catalysts in a mixed oxide system for their oxygen evolution capability.20 These electrodeposited films showed higher oxygen evolution activity compared to that of pure Ni or Fe oxide. Miller also inves ...
Ionization of High-Density Deep Donor Defect States Explains the
... Improved, Transene Inc.) to ensure ohmic contact. The voltage contacts were designed following a Hall bar pattern and made by wire-bonding aluminum wires on a facet orthogonal to the axis of current flow. The current and voltage contacts were tested and found to be ohmic. All electrical measurements ...
... Improved, Transene Inc.) to ensure ohmic contact. The voltage contacts were designed following a Hall bar pattern and made by wire-bonding aluminum wires on a facet orthogonal to the axis of current flow. The current and voltage contacts were tested and found to be ohmic. All electrical measurements ...
Isopropanol oxidation by pure metal oxide
... been extensively studied are ZnO [25,26] and MoO3 [27]. All these investigations adsorbed isopropanol at room temperature and found that isopropanol adsorbs both dissociatively as a surface isopropoxide intermediate and as physisorbed isopropanol at room temperature. In some cases, also intact isopr ...
... been extensively studied are ZnO [25,26] and MoO3 [27]. All these investigations adsorbed isopropanol at room temperature and found that isopropanol adsorbs both dissociatively as a surface isopropoxide intermediate and as physisorbed isopropanol at room temperature. In some cases, also intact isopr ...
Manual Physical Chemistry III
... is much higher. On the other hand, these cohesive forces are not strong enough to result into the fixed position of molecules that can be seen in solid matter. Liquids do not keep a fixed shape, but adapt the shape of a container. Attractive cohesive forces are short range forces which are based on ...
... is much higher. On the other hand, these cohesive forces are not strong enough to result into the fixed position of molecules that can be seen in solid matter. Liquids do not keep a fixed shape, but adapt the shape of a container. Attractive cohesive forces are short range forces which are based on ...
Reference Specifications for Civil Engineering Work 2001
... of the pavement to allow a uniform thickness of the new asphalt surface to be placed. Deteriorated asphalt surfacing: Remove old asphalt which is fatty, bleeding, ravelling, cracked or otherwise deteriorated, prior to placing new surface. Slope and camber: If required, correct the slope or crossfall ...
... of the pavement to allow a uniform thickness of the new asphalt surface to be placed. Deteriorated asphalt surfacing: Remove old asphalt which is fatty, bleeding, ravelling, cracked or otherwise deteriorated, prior to placing new surface. Slope and camber: If required, correct the slope or crossfall ...
When Gold Is Not Noble: Nanoscale Gold
... geometry of a free Au8 cluster deposited on the surface (thus modeling the soft-landing process) in the vicinity of the FC defect. The doubly-occupied FC orbital of the bare surface, whose energy lies in the band-gap of the MgO (100) spectrum split by 2.45 eV from the O (2p)-derived band, is shown i ...
... geometry of a free Au8 cluster deposited on the surface (thus modeling the soft-landing process) in the vicinity of the FC defect. The doubly-occupied FC orbital of the bare surface, whose energy lies in the band-gap of the MgO (100) spectrum split by 2.45 eV from the O (2p)-derived band, is shown i ...
Ferroelectricity in Amphiphilic Monolayers
... complicate their phase model, they might begin to explore the liquid crystal phase. The term "liquid crystal" describes a phase present in certain substances that combines the qualities of liquids and solids. Most essentially, a liquid crystal combines the mobility of liquid molecules and the orient ...
... complicate their phase model, they might begin to explore the liquid crystal phase. The term "liquid crystal" describes a phase present in certain substances that combines the qualities of liquids and solids. Most essentially, a liquid crystal combines the mobility of liquid molecules and the orient ...
Unusual deprotonated alkynyl hydrogen bonding in metal
... Understanding and controlling supported molecular architectures is of fundamental importance for fabricating molecular device elements through the bottom-up approach.1−7 Hydrogen bonding, which provides selectivity and directionality combined with error corrective processes, has been successfully em ...
... Understanding and controlling supported molecular architectures is of fundamental importance for fabricating molecular device elements through the bottom-up approach.1−7 Hydrogen bonding, which provides selectivity and directionality combined with error corrective processes, has been successfully em ...
Models of electrodes and contacts in molecular
... We consider different models for the leads and leadmolecule contacts of a Au-benzenedithiol-Au system: 共A兲 leads with different finite cross sections, 共B兲 leads of infinite periodic surfaces, 共C兲 periodic surface leads with a nanowire connection of different lengths to the molecule, and 共D兲 similar ...
... We consider different models for the leads and leadmolecule contacts of a Au-benzenedithiol-Au system: 共A兲 leads with different finite cross sections, 共B兲 leads of infinite periodic surfaces, 共C兲 periodic surface leads with a nanowire connection of different lengths to the molecule, and 共D兲 similar ...
Molecular structure and reactivity of the Group V metal oxides
... (H2 -TPR). The reduction properties of bulk V2 O5 , Nb2 O5 and Ta2 O5 were compared with H2 -TPR. Bulk V2 O5 reduction initiated at ∼600 ◦ C and reduction occurred in three stages at ∼675 ◦ C (V2 O5 → V6 O13 ), ∼705 ◦ C (V6 O13 → V2 O4 ) and ∼780 ◦ C (V2 O4 → V2 O3 ). Bulk Nb2 O5 reduction initiated ...
... (H2 -TPR). The reduction properties of bulk V2 O5 , Nb2 O5 and Ta2 O5 were compared with H2 -TPR. Bulk V2 O5 reduction initiated at ∼600 ◦ C and reduction occurred in three stages at ∼675 ◦ C (V2 O5 → V6 O13 ), ∼705 ◦ C (V6 O13 → V2 O4 ) and ∼780 ◦ C (V2 O4 → V2 O3 ). Bulk Nb2 O5 reduction initiated ...
纳米结构体系物理化学性质的理论研究方法与实例
... wavelength associated with motion along the reaction coordinate. In other words, quantum mechanically, the transition state is not localized. The uncertainty relation DEDt ħ may be analyzed in a similar way. For the thermal averaging in TST to have a meaning, it is necessary that the translational ...
... wavelength associated with motion along the reaction coordinate. In other words, quantum mechanically, the transition state is not localized. The uncertainty relation DEDt ħ may be analyzed in a similar way. For the thermal averaging in TST to have a meaning, it is necessary that the translational ...
ADSORPTION ION EXCHANGE RESINS
... • Activated carbon is produced by roasting organic material to decompose it to granules of carbon • Commonly used materials: coconut shell, wood, and bone. ...
... • Activated carbon is produced by roasting organic material to decompose it to granules of carbon • Commonly used materials: coconut shell, wood, and bone. ...
Surface chemistry of carbon dioxide - Max-Planck
... contrast, the n-orbital energies show pronounced alterations. In the bent molecule the degeneracies of all the n-orbitals are split. This is clear from Fig. 1, if we remember the two equivalent components in and perpendicular to the plane of the paper. If the molecule bends in the plane of the paper ...
... contrast, the n-orbital energies show pronounced alterations. In the bent molecule the degeneracies of all the n-orbitals are split. This is clear from Fig. 1, if we remember the two equivalent components in and perpendicular to the plane of the paper. If the molecule bends in the plane of the paper ...
Fractional Distillation
... Fractional Distillation In this laboratory exercise we will separate a mixture of Cyclohexane and Toluene using Fractional Distillation. Cyclohexane (C6H12) and Toluene (C7H8) are low molecular weight hydrocarbons that form a liquid solution when mixed. This separation will rely on the difference in ...
... Fractional Distillation In this laboratory exercise we will separate a mixture of Cyclohexane and Toluene using Fractional Distillation. Cyclohexane (C6H12) and Toluene (C7H8) are low molecular weight hydrocarbons that form a liquid solution when mixed. This separation will rely on the difference in ...
Homo-coupling of terminal alkynes on a noble metal surface
... related dehydrogenation (Fig. 4b) similar to the one proposed by King et al.[32] seems even more unlikely since it is associated with a reaction barrier of 1.9 eV. Moreover, there is no evidence for atomic steps playing a relevant role in the potential dehydrogenation according to the STM observati ...
... related dehydrogenation (Fig. 4b) similar to the one proposed by King et al.[32] seems even more unlikely since it is associated with a reaction barrier of 1.9 eV. Moreover, there is no evidence for atomic steps playing a relevant role in the potential dehydrogenation according to the STM observati ...
Development of materials, surfaces and manufacturing methods for
... the field, very few technical solutions have been implemented commercially. The first part of the work deals with the development of prototype pointof-care tests. The research has focused on two major areas: developing new manufacturing methods to leverage the performance of existing materials and d ...
... the field, very few technical solutions have been implemented commercially. The first part of the work deals with the development of prototype pointof-care tests. The research has focused on two major areas: developing new manufacturing methods to leverage the performance of existing materials and d ...
Wire Rope Angle Reference
... DESIGN FACTOR is used in calculating a sling's rated capacity and is necessary to allow for conditions such as wear, abrasion, damage and variations in load. Design factors have been established which allow the sling to give the most efficient service to the user. Rated capacity tables are based on ...
... DESIGN FACTOR is used in calculating a sling's rated capacity and is necessary to allow for conditions such as wear, abrasion, damage and variations in load. Design factors have been established which allow the sling to give the most efficient service to the user. Rated capacity tables are based on ...
Growth Mechanism and Electronic Structure of Zn3P2 on the Ga
... also observed on the films grown at temperatures higher than the Zn desorption temperature,21,22 Zn was not associated with this surface reconstruction. In addition, since Zn and Ga are cations in II−V and III−V materials, one would expect to observe only the group-V atoms and not the metal atoms in ...
... also observed on the films grown at temperatures higher than the Zn desorption temperature,21,22 Zn was not associated with this surface reconstruction. In addition, since Zn and Ga are cations in II−V and III−V materials, one would expect to observe only the group-V atoms and not the metal atoms in ...
Wetting
Wetting is the ability of a liquid to maintain contact with a solid surface, resulting from intermolecular interactions when the two are brought together. The degree of wetting (wettability) is determined by a force balance between adhesive and cohesive forces. Wetting deals with the three phases of materials: gas, liquid, and solid. It is now a center of attention in nanotechnology and nanoscience studies due to the advent of many nanomaterials in the past two decades (e.g. graphene, carbon nanotube).Wetting is important in the bonding or adherence of two materials. Wetting and the surface forces that control wetting are also responsible for other related effects, including so-called capillary effects. Regardless of the amount of wetting, the shape of a liquid drop on a rigid surface is roughly a truncated sphere.There are two types of wetting: non-reactive wetting and active wetting.