Revised Higher 2014 Paper
... One way to identify if a perfume is counterfeit is to use gas chromatography. The Marks gas chromatograms from a brand name perfume and two counterfeit perfumes, A and B, are shown below. The chromatograms were run under identical ...
... One way to identify if a perfume is counterfeit is to use gas chromatography. The Marks gas chromatograms from a brand name perfume and two counterfeit perfumes, A and B, are shown below. The chromatograms were run under identical ...
250 K (English version)
... All modules are authored to the agreed framework First drafts of the modules are critically read within the authoring team Later drafts are critically read by selected members of the physics group Developmental testing (pilot testing) of key elements of both the on-line environment and of th ...
... All modules are authored to the agreed framework First drafts of the modules are critically read within the authoring team Later drafts are critically read by selected members of the physics group Developmental testing (pilot testing) of key elements of both the on-line environment and of th ...
Preparation and Properties of an Aqueous Ferrofluid
... energy overwhelms the tendency of their electrons to align in magnetic domains (regions of similarly oriented electron spins). The Curie temperature is well below the melting point for known magnetic materials (1–3). Ferrofluids, which are colloidal suspensions of magnetic material in a liquid mediu ...
... energy overwhelms the tendency of their electrons to align in magnetic domains (regions of similarly oriented electron spins). The Curie temperature is well below the melting point for known magnetic materials (1–3). Ferrofluids, which are colloidal suspensions of magnetic material in a liquid mediu ...
Part II : Light and gravitation
... The orbital motion of the lattice line shapes around the space at speed c creates the potential of the surface W = c². The potential is parallel to 4.D. In balance the masses parallel to 3D-surface are evenly shared over the 3D-surface and create a pull force around the whole closed surface. When th ...
... The orbital motion of the lattice line shapes around the space at speed c creates the potential of the surface W = c². The potential is parallel to 4.D. In balance the masses parallel to 3D-surface are evenly shared over the 3D-surface and create a pull force around the whole closed surface. When th ...
Structures of Escherichia coli Branched
... molecules. The main-chain atoms of three subunits in the asymmetric unit were superimposed by least-squares fitting with an rms deviation of 0.12 Å and a maximum deviation of 0.40 Å, indicating that the three independent subunits have the same structure. The average thermal factors of the mainchain ...
... molecules. The main-chain atoms of three subunits in the asymmetric unit were superimposed by least-squares fitting with an rms deviation of 0.12 Å and a maximum deviation of 0.40 Å, indicating that the three independent subunits have the same structure. The average thermal factors of the mainchain ...
TCNQ-based Supramolecular Architectures at Metal Surfaces
... surfaces were investigated. The structural formation is directed by non-covalent interactions. By controlling fabrication parameters, surface coordination nanostructures with dierent chemical composition or molecular packing have been synthesized and characterized by scanning tunneling microscopy ( ...
... surfaces were investigated. The structural formation is directed by non-covalent interactions. By controlling fabrication parameters, surface coordination nanostructures with dierent chemical composition or molecular packing have been synthesized and characterized by scanning tunneling microscopy ( ...
review of colloids in ore genesis - UTas ePrints
... perties of colloidal systems lind attlllipts to indicate how these properties might determine the role of colloids under the geological environments pravailinq during ora transport and deposition •. The existence of colloidal systems compared with true solutions, in ore fluids, must not be ruled out ...
... perties of colloidal systems lind attlllipts to indicate how these properties might determine the role of colloids under the geological environments pravailinq during ora transport and deposition •. The existence of colloidal systems compared with true solutions, in ore fluids, must not be ruled out ...
Reflection of matter waves in potential structures
... long enough to be treated as adiabatic. The third case is the most difficult one as it includes coherent transfer between different states and will probably necessitate a thorough investigation of how the nonadiabatic couplings alter longitudinal dynamics. It is thus seen that in the full treatment, ...
... long enough to be treated as adiabatic. The third case is the most difficult one as it includes coherent transfer between different states and will probably necessitate a thorough investigation of how the nonadiabatic couplings alter longitudinal dynamics. It is thus seen that in the full treatment, ...
Paper
... occupied relative to the other modes. Apart from ", the only other adjustable parameters in the simulations were an overall normalization constant and the size of the initial seed, which was assumed to be small. Numerically, optimal deamplification was achieved for " h 1:0 kHz, and adjustments ...
... occupied relative to the other modes. Apart from ", the only other adjustable parameters in the simulations were an overall normalization constant and the size of the initial seed, which was assumed to be small. Numerically, optimal deamplification was achieved for " h 1:0 kHz, and adjustments ...
Chemical Equations and Reaction Stoichiometry
... More Problems?? __NH3 + __O2 __NO + __H2O • How many grams of NO can be produced from 17.80 grams of O2? NH3 is in excess. • How many molecules of NH3 are required to produce 7.31 10-10 grams of H2O? ...
... More Problems?? __NH3 + __O2 __NO + __H2O • How many grams of NO can be produced from 17.80 grams of O2? NH3 is in excess. • How many molecules of NH3 are required to produce 7.31 10-10 grams of H2O? ...
Competition for Electrons
... track of electrons based on the arbitrary assumption that shared electrons belong to the more electronegative element n Rules for assigning oxidation numbers q Oxidation numbers for atoms that are free elements are always zero q The oxidation numbers of ions are the same as the charge on the ion q S ...
... track of electrons based on the arbitrary assumption that shared electrons belong to the more electronegative element n Rules for assigning oxidation numbers q Oxidation numbers for atoms that are free elements are always zero q The oxidation numbers of ions are the same as the charge on the ion q S ...
Manipulation and Simulation of Cold Atoms in
... Systems of cold atoms in optical lattices have a great deal of potential as tools in the study of strongly correlated condensed matter systems and in the implementation of quantum information processing. There exists both a good understanding of the microscopic dynamics in these systems, and extensi ...
... Systems of cold atoms in optical lattices have a great deal of potential as tools in the study of strongly correlated condensed matter systems and in the implementation of quantum information processing. There exists both a good understanding of the microscopic dynamics in these systems, and extensi ...
Fractionalization, Topological Order, and
... emergence of a collective excitation having fractional quantum numbers with respect to the elementary particles (such as electrons), in a strongly correlated system. The notion of fractionalization is not only fascinating in itself, but also has been related to other intriguing concepts in theoretic ...
... emergence of a collective excitation having fractional quantum numbers with respect to the elementary particles (such as electrons), in a strongly correlated system. The notion of fractionalization is not only fascinating in itself, but also has been related to other intriguing concepts in theoretic ...
Simulations of Si and SiO2 Etching in SF6+O2 Plasma
... with SiO2 molecules. In experiment [5], it was shown that the number of fluorine atoms per silicon in the SiOx Fy layer passivating the sidewalls decreases from 2.0 for pure SF6 to 1.0 at 50% O2 content in the feed, and the number of oxygen atoms per silicon increases from 0 for pure SF6 to 1.7 at 5 ...
... with SiO2 molecules. In experiment [5], it was shown that the number of fluorine atoms per silicon in the SiOx Fy layer passivating the sidewalls decreases from 2.0 for pure SF6 to 1.0 at 50% O2 content in the feed, and the number of oxygen atoms per silicon increases from 0 for pure SF6 to 1.7 at 5 ...
Chemistry - CBSE Academic
... new areas like synthetic materials, bio -molecules, natural resources, industrial chemistry are coming in a big way and deserve to be an integral part of chemistry syllabus at senior secondary stage. At international level, new formulations and nomenclature of elements and compounds, symbols and uni ...
... new areas like synthetic materials, bio -molecules, natural resources, industrial chemistry are coming in a big way and deserve to be an integral part of chemistry syllabus at senior secondary stage. At international level, new formulations and nomenclature of elements and compounds, symbols and uni ...
numerical calculation of the ground state energies of the hydrogen
... and Density Functional Theory Molecular Dynamics [DFTMD]. Further there are models that minimises an approximate free energy function constructed from the known theoretical limits with respect to chemical composition. In this project we will consider Monte-Carlo methods that can be used to evaluate ...
... and Density Functional Theory Molecular Dynamics [DFTMD]. Further there are models that minimises an approximate free energy function constructed from the known theoretical limits with respect to chemical composition. In this project we will consider Monte-Carlo methods that can be used to evaluate ...
Electron Attraction Mediated by Coulomb Repulsion
... effective glue for the attraction. To make electrons attractive this medium should perform an unusual feat – flip the sign of the potential generated by the system electrons, making them look like holes to other system electrons (Fig 1b). This suggests that the medium should effectively have a negat ...
... effective glue for the attraction. To make electrons attractive this medium should perform an unusual feat – flip the sign of the potential generated by the system electrons, making them look like holes to other system electrons (Fig 1b). This suggests that the medium should effectively have a negat ...
Lecture Notes in Statistical Mechanics and Mesoscopics Doron Cohen
... and the partition function Z(β). We shall see later that the state equations of a system in equilibrium can be derived from, say, the partition function. Hence the spectral function serves as a generating function. In the section below we define g(E) and Z(β), and show how they are calculated suing ...
... and the partition function Z(β). We shall see later that the state equations of a system in equilibrium can be derived from, say, the partition function. Hence the spectral function serves as a generating function. In the section below we define g(E) and Z(β), and show how they are calculated suing ...
Atomic theory
In chemistry and physics, atomic theory is a scientific theory of the nature of matter, which states that matter is composed of discrete units called atoms. It began as a philosophical concept in ancient Greece and entered the scientific mainstream in the early 19th century when discoveries in the field of chemistry showed that matter did indeed behave as if it were made up of atoms.The word atom comes from the Ancient Greek adjective atomos, meaning ""uncuttable"". 19th century chemists began using the term in connection with the growing number of irreducible chemical elements. While seemingly apropos, around the turn of the 20th century, through various experiments with electromagnetism and radioactivity, physicists discovered that the so-called ""uncuttable atom"" was actually a conglomerate of various subatomic particles (chiefly, electrons, protons and neutrons) which can exist separately from each other. In fact, in certain extreme environments, such as neutron stars, extreme temperature and pressure prevents atoms from existing at all. Since atoms were found to be divisible, physicists later invented the term ""elementary particles"" to describe the ""uncuttable"", though not indestructible, parts of an atom. The field of science which studies subatomic particles is particle physics, and it is in this field that physicists hope to discover the true fundamental nature of matter.