Results 221 to 230 of about 255,857 (266)
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Constructive Approximation, 1989
Suppose a fractal set E has the form \(U\setminus \cup_{n=1}C_ n\), where U and the disjoint \(C_ n\) are open domains such that \(clos \cup_{n=1}C_ n=clos U\) and \(c_{n+1}\geq c_ n,\) \(c_ n=diam C_ n.\) Denote \(e=\limsup \log n/(-\log c_ n)\) (which is equal to Borel's logarithmic rarefaction of E and to the Besicovitch-Taylor index) and let ...
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Suppose a fractal set E has the form \(U\setminus \cup_{n=1}C_ n\), where U and the disjoint \(C_ n\) are open domains such that \(clos \cup_{n=1}C_ n=clos U\) and \(c_{n+1}\geq c_ n,\) \(c_ n=diam C_ n.\) Denote \(e=\limsup \log n/(-\log c_ n)\) (which is equal to Borel's logarithmic rarefaction of E and to the Besicovitch-Taylor index) and let ...
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2005
This article deals with generalities and definitions of porous silicon (PSi): fabrication techniques, structural properties, chemical properties, electronic properties, electrical properties, optical properties, and actual or potential applications of PSi.
Gaburro, Zeno +2 more
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This article deals with generalities and definitions of porous silicon (PSi): fabrication techniques, structural properties, chemical properties, electronic properties, electrical properties, optical properties, and actual or potential applications of PSi.
Gaburro, Zeno +2 more
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2018
This chapter introduces the Cross-Cultural Interaction Model (CCIM), which was designed to more clearly expose the processes that occur in the multicultural contexts of colonization, frontiers, and ancient borderlands. The model can visually represent simultaneous interactions by numerous participants and explores the various ways in which people ...
Ulrike Matthies Green, Kirk E. Costion
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This chapter introduces the Cross-Cultural Interaction Model (CCIM), which was designed to more clearly expose the processes that occur in the multicultural contexts of colonization, frontiers, and ancient borderlands. The model can visually represent simultaneous interactions by numerous participants and explores the various ways in which people ...
Ulrike Matthies Green, Kirk E. Costion
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Nature Materials, 2009
Porous materials are important in a wide range of applications including molecular separations and catalysis. We demonstrate that covalently bonded organic cages can assemble into crystalline microporous materials. The porosity is prefabricated and intrinsic to the molecular cage structure, as opposed to being formed by non-covalent self-assembly of ...
Tozawa, Tomokazu +17 more
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Porous materials are important in a wide range of applications including molecular separations and catalysis. We demonstrate that covalently bonded organic cages can assemble into crystalline microporous materials. The porosity is prefabricated and intrinsic to the molecular cage structure, as opposed to being formed by non-covalent self-assembly of ...
Tozawa, Tomokazu +17 more
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Powder Metallurgy, 1969
To facilitate the proper application of porous metal bearings, engineers demand a reliable method of predicting bearing performance in order that they may check the suitability of their designs. The responsibility of meeting that demand lies with the powder-metallurgy industry as much as with the many industries that use porous metal bearings.
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To facilitate the proper application of porous metal bearings, engineers demand a reliable method of predicting bearing performance in order that they may check the suitability of their designs. The responsibility of meeting that demand lies with the powder-metallurgy industry as much as with the many industries that use porous metal bearings.
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Angewandte Chemie International Edition, 2012
Another brick in the wall: Porous ternary cocrystals were prepared by chiral recognition between organic cage modules. One module, CC1, is ordered on 50 % of the lattice positions with respect to two other modules, CC3 and CC4, that are disordered across the other 50 % of sites (see picture).
Tom, Hasell +4 more
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Another brick in the wall: Porous ternary cocrystals were prepared by chiral recognition between organic cage modules. One module, CC1, is ordered on 50 % of the lattice positions with respect to two other modules, CC3 and CC4, that are disordered across the other 50 % of sites (see picture).
Tom, Hasell +4 more
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Photoluminescence of porous silicon and porous polysilicon films
Proceedings of the Fourth IEEE International Caracas Conference on Devices, Circuits and Systems (Cat. No.02TH8611), 2003We conducted a series of experiments on porous silicon (PS) and porous polysilicon (PPS) to investigate the origins of photoluminescence in these materials. A study of the effects of surface layer plasma etching, for several different durations, on the as-anodized samples was conducted.
null Hei Wong, P.G. Han, M.C. Poon
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European Journal of Cardio-Thoracic Surgery, 2012
A 50-year-old woman had dyspnoea from the right pleural effusion. A tube thoracostomy yielded 3 l of sanguineous, benign, sterile persistent effusion. A videothoracoscopy showed diaphragmatic blebs and pores (Fig. 1) with ascitic fluid squirting through them (Supplementary Video 1).
Sandeep, Sainathan, Shahriyour, Andaz
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A 50-year-old woman had dyspnoea from the right pleural effusion. A tube thoracostomy yielded 3 l of sanguineous, benign, sterile persistent effusion. A videothoracoscopy showed diaphragmatic blebs and pores (Fig. 1) with ascitic fluid squirting through them (Supplementary Video 1).
Sandeep, Sainathan, Shahriyour, Andaz
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Annual Review of Analytical Chemistry, 2008
There are thousands of different nanometer-scale pores in biology, many of which act as sensors for specific chemical agents. Recent work suggests that protein and solid-state nanopores have many potential uses in a wide variety of analytical applications.
John J, Kasianowicz +4 more
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There are thousands of different nanometer-scale pores in biology, many of which act as sensors for specific chemical agents. Recent work suggests that protein and solid-state nanopores have many potential uses in a wide variety of analytical applications.
John J, Kasianowicz +4 more
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Wave Interaction with Fractured Porous Layer in Porous Medium
Lobachevskii Journal of MathematicszbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gubaidullin, A. A. +2 more
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