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Topic: Linear-(chemistry)


    Note: these results are not from the primary (high quality) database.


  
 Polymers
Polymer chemistry is devoted to the study of large molecules- macromolecules.
Many liquid and glassy polymers, and to some extent inorganic glasses as well, show this phenomenon of viscoelasticity, that is, they deform in a plastic manner under stress on slow timescales, but are elastic under more rapid stress.
Polymer chains are typically linear, branched, or crosslinked, although other less common topologies are known.
courses.chem.psu.edu /chem13/materials/polymers.html   (2354 words)

  
 Frank Potter's Science Gems - Physical Science II
It assumes that you have a working knowledge of algebra, that you are currently taking or have taken a college level course in Biology and one in Chemistry, and that you are interested in biology, chemistry or one of the health-related fields.
It does not try to be encyclopedic, but neither does it assume that you have to be spoon-fed: you are expected to be a serious student and a careful reader.
Special Relativity - P. Fraundorf, University of Missouri -St. Louis Introductions, derivations, and examples with graphs, etc. You may wish to try the kinematics calculator at the bottom of the page!!
www.sciencegems.com /physical2.html   (2354 words)

  
 phy_gmgensci_maj.html
This 56 semester hour major and minor combination encompasses five areas of study: biology, chemistry, earth science, mathematics, and physics.
Approved electives in chemistry, earth science, mathematics, and physics (8)
Students must follow regular department requirements to complete a 20 semester hour cognate minor in one of the areas listed above and a 36 hour group major composed of courses from the other four areas.
www.emich.edu /public/catalogs/1995-1996/undergrad/coa/phy/major/phy_gmgensci_maj.html   (433 words)

  
 Alliance for Non Linear Optics
Antipin, Mikhail Yu.; Clark, Ronald D. A combinatorial chemistry approach to new materials for non-linear optics.
Clark, Ronald D. A combinatorial chemistry approach to new materials for non-linear optics.
chem.nmhu.edu /Alliance/mikhail.html   (433 words)

  
 Amazon.com: Frontier Orbitals and Organic Chemical Reactions: Books: Ian Fleming
Assuming the reader is familiar with the concept of molecular orbital as a linear combination of atomic orbitals the book is presented in a simple style, without mathematics making it accessible to readers of all levels.
This book is both a simplified account of frontier orbital theory and a review of its applications in organic chemistry; it provides a basic introduction to the subject and a wealth of illustrative examples.
The theory is presented very simply, without mathematics, stressing physical principles and assuming only that the reader is familiar with the concept of a molecular orbital as a linear combination of atomic orbitals.
www.amazon.com /exec/obidos/tg/detail/-/0471018198?v=glance   (913 words)

  
 Polarization - Wikipedia, the free encyclopedia
Polarization is principally of importance in chemistry due to the circular dichroism and "optical rotation" (circular birefringence) exhibited by optically active (chiral) molecules.
The property of (linear) birefringence is widespread in crystalline minerals, and indeed was pivotal in the initial discovery of polarization.
Related to the sky compass is the "polar clock", invented by Charles Wheatstone in the late 19th century.
en.wikipedia.org /wiki/Polarization   (3951 words)

  
 Encyclopedia: Microwave
The overall linear size of the radio structure is 120 kpc.
Microwave oven A microwave oven is a kitchen appliance employing microwave radiation primarily to cook or heat food.
Microwaves are a form of "electromagnetic" radiation; that is, they are waves of electrical and magnetic energy moving together through space.
www.nationmaster.com /encyclopedia/Microwave   (771 words)

  
 Analytical chemistry - Wikipedia, the free encyclopedia
Analytical chemistry research is largely driven by performance (sensitivity, selectivity, robustness, linear range, accuracy, precission, and speed), and cost (purchase, operation, training, time, and space).
Analytical chemistry is the analysis of material samples to gain an understanding of their chemical composition and structure.
Mass spectrometry is used to determine the molecular mass, the elemental composition, structure and sometimes amount of chemical species in a sample by ionizing the analyte molecules and observing their behavior in electric and magnetic fields.
en.wikipedia.org /wiki/Chemistry,_analytical   (771 words)

  
 Energy Citations Database (ECD) Document #4220934 - ACTIVITY CONCEPT IN RADIATION CHEMISTRY
CHEMISTRY; DECOMPOSITION;ELECTROLYTES;FREE RADICALS;HYDROGEN;HYDROGEN PEROXIDES;HYDROXIDES; ION RECOMBINATION;IONS;RADIATION CHEMISTRY;RADIATIONS;REGENERATION;SODIUM NITRATES;SOLUTIONS;SOLVENTS;WATER
The linear dependence of the molecular yields on the cube root of the solute molarity applies very well for dilute solutions of strong electroytes, however, in more concentrated solutions considerable deviation is observed.
Alteration of the molecular hydrogen yield was demonstrated by varying the scavenging solute concentration and the activity of the scavenging solute.
www.osti.gov /energycitations/product.biblio.jsp?osti_id=4220934   (771 words)

  
 Linear Accelerator text
When the construction of the Linear Accelerator was announced in the fall of 1961, it was portrayed as the next logical step on the University’s research path.
The building of the Linear Accelerator (Linac) was not a random event but rather the result of a series of developments on campus.
With this unit research was undertaken in the areas of radiological physics, radiation chemistry and the effects of high energy radiation on plants and animals.
lib74123.usask.ca /gallery/uofs_buildings/text_linac.htm   (771 words)

  
 Chemistry - Linear particle accelerator
Such accelerators are severely limited in accelerating power since at high voltage energy will be lost due to corona discharge, with electrical energy dissapated into the surrounding atmosphere.
It may be used to produce X-rays, by accelerating electrons into a target window, or for the production of high energy particles so that the results of particle collisions may be studied, usually with a bubble chamber or other device.
As the particle bunch passes through the tube it is unaffected (the tube acts as a Faraday cage), while the frequency of the driving signal and the spacing of the gaps between electrodes is designed so that the maximum voltage differential appears as the particle crosses the gap.
www.chemistrydaily.com /chemistry/Linear_accelerator   (1043 words)

  
 CEE Courses
Physical chemistry and mass transfer fundamentals related to contaminant fate and transport in soil, air and water systems, including: soil-water sorption and desorption, contaminant retardation, vaporization and dissolution of nonaqueous phase liquids (NAPL) and other environmental systems.
Kinematics of deformation, strain, tensors, invariance, compatibility; conservation laws; stress tensors; equations of motion; boundary conditions; constitutive equations: general theory, linearization, anisotropy; reciprocity linear isotropic elastic problems, plane and generalized plane problems; dynamic problems.
Principles of chemical kinetics, thermochemistry, spectroscopy, and photochemistry; chemical composition and history of Earth's atmosphere; biogeochemical cycles of key atmospheric constituents; basic photochemistry of troposphere and stratosphere, upper atmosphere chemical processes; air pollution; chemistry and climate.
www.cee.ucla.edu /courses.htm   (1043 words)

  
 DLESE description of Trends in Precipitation Chemistry in the United States, 1983-94: An Analysis of the Effects in 1995 of Phase I of the Clean Air Act Amendments of 1990, Title IV.
The assessment was based on a comparison of observed 1995 sulfate, nitrate, and hydrogen ion concentrations at these NADP/NTN sites with estimates obtained from linear least-squares trend models of precipitation chemistry data collected from 1983 through 1994.
DLESE description of Trends in Precipitation Chemistry in the United States, 1983-94: An Analysis of the Effects in 1995 of Phase I of the Clean Air Act Amendments of 1990, Title IV.
Trends in Precipitation Chemistry in the United States, 1983-94: An Analysis of the Effects in 1995 of Phase I of the Clean Air Act Amendments of 1990, Title IV.
www.dlese.org /dds/view_resource.do?description=DLESE-000-000-000-774   (273 words)

  
 Linear Accelerator text
The building of the Linear Accelerator (Linac) was not a random event but rather the result of a series of developments on campus.
With this unit research was undertaken in the areas of radiological physics, radiation chemistry and the effects of high energy radiation on plants and animals.
When the construction of the Linear Accelerator was announced in the fall of 1961, it was portrayed as the next logical step on the University’s research path.
scaa.usask.ca /gallery/uofs_buildings/text_linac.htm   (328 words)

  
 Beer's Law - Theoretical Principles
The linear relationship between concentration and absorbance is both simple and straightforward, which is why we prefer to express the Beer-Lambert law using absorbance as a measure of the absorption rather than %T. Question : What is the significance of the molar absorbtivity,
Absorption takes place and the beam of radiation leaving the sample has radiant power P.
If all the light is absorbed, then percent transmittance is zero, and absorption is infinite.
www.shu.ac.uk /schools/sci/chem/tutorials/molspec/beers1.htm   (328 words)

  
 Near infrared spectra of pellets and thin films of high-density, low-density and linear low-density polyethylenes and prediction of their physical properties by multivariate data analysis
The aim of the present study is to investigate in detail the near infrared (NIR) spectra of the three types of polyethylene, linear low-density polyethylene (LLDPE), low-density polyethylene (LDPE) and high-density polyethylene (HDPE), and to develop calibration models that predict their physical properties such as density, crystallinity and melting point.
Department of Chemistry and Research Center for Near-Infrared Spectroscopy, School of Science and Technology, Kwansei-Gakuin University, Sanda 669-1337, Japan
The correlation coefficient for the density was calculated to be 0.9898, 0.9928, 0.9925 and 0.9872 for the spectra obtained at 2, 4, 8 and 16 cm
www.nirpublications.com /abs/J11_0309.html   (328 words)

  
 Newton's Laws in Action
Again, the arrow indicates that linear momentum (which we shall just refer to as the momentum from now on) needs to be specified by a direction AND a magnitude or amount.
However, since energy can appear in many different forms, some of which are difficult to observe, it took many years and experiments in many branches of physics and chemistry to prove that energy (as distinguished from kinetic energy, the energy associated with motion) is also conserved in all collisions.
In a collision between two objects 1 and 2, object 1 ``acts upon'' object 2 to change its momentum and object 2, by Newton's Third Law, ``acts upon'' object 1 to change its momentum in a way which is equal in magnitude and opposite in direction to the action of 1 on 2.
dept.physics.upenn.edu /courses/gladney/mathphys/subsection3_1_3.html   (1837 words)

  
 University of Minnesota, Morris
Applying a principle of linear covariance toward understanding the chemical significance of interactions betweem atoms in molecules according to the covariant and contravariant representation of operators in nonorthogonal basis frames.
Fall 2002: one section of General Chemistry Lecture and three sections of General Chemistry Laboratory.
Using Valency Interactions to qualitatively understand chemical reactivity in cases where symmetry methods do not apply.
www.mrs.umn.edu /directories/personnel/cv/Alia.html   (243 words)

  
 Erik's Chemistry: Organic, General, AP and Physical Chemistry Notes
Take math classes beyond what is required; linear algebra is extremely useful in physical chemistry, as are related course on group theory.
Erik's Chemistry is a collection of Chemistry, AP Chemistry, and Organic Chemistry notes, available for people to read through, review and learn with.
Erik's Chemistry is best viewed at 800x600 or greater.
eppe.tripod.com   (394 words)

  
 qocereng
We would then explore their chemistry and novel electronic properties as non linear optical materials and electrical conductors, and potential applications based on their biological activity.
The Department of Organic Chemistry is located in the University Campus in Cáceres, and it is divided between the Faculty of Veterinary and the Plitechnic School.
The donor properties of sulfur and nitrogen atoms included in this macrocyclic compounds could be of interest in materials chemistry as new molecular probes for selective binding of metallic cations or charged and neutral organic compounds.
www.unex.es /qoceres/qocereng.htm   (635 words)

  
 Erik's Chemistry: Organic, General, AP and Physical Chemistry Notes
Take math classes beyond what is required; linear algebra is extremely useful in physical chemistry, as are related course on group theory.
Erik's Chemistry is a collection of Chemistry, AP Chemistry, and Organic Chemistry notes, available for people to read through, review and learn with.
Erik's Chemistry is best viewed at 800x600 or greater.
eppe.tripod.com   (394 words)

  
 Mathematics Archives - Topics in Mathematics - Abstract Algebra
Group presentations, Alternating groups, Sporadic groups (including the JacquesTits group), Linear groups, Unitary groups, Symplectic groups, Orthogonal groups, Exceptional groups of Lie type (both twisted and untwisted)
Lecture Notes, Algebraic sets, Hilbert's Nullstellensatz, varieties over algebraically closed fields, complex analytic manifolds, genus, divisors, linear series, line bundles and the Riemann-Roch theorem.
Software, SYMMETRICA, List of Large Designs, Finite Group Actions, Group Theory, Coding Theory, Finite Geometries, Mathematical Chemistry, MOLGEN
archives.math.utk.edu /topics/abstractAlgebra.html   (394 words)

  
 Chemistry - Dubnium
The American team synthesized the element by bombarding a target californium-249 with a beam of 84 MeV nitrogen nuclei in the Heavy Ion Linear Accelerator (a particle accelerator), which produced element 105-260 with a half-life of 1.6 seconds.
The International Union of Pure and Applied Chemistry (IUPAC) thus adopted unnilpentium (symbol Unp) as a temporary name for this element.
Atoms of element 105 were detected conclusively on March 5, 1970 but there is evidence that this element had already been formed at Berkeley a year earlier using the same method.
www.chemistrydaily.com /chemistry/Unnilpentium   (324 words)

  
 Chemistry Division
Los Alamos National Laboratory routinely produces substantial quantities of a number of radioisotopes during the operating cycle of the Los Alamos Neutron Science Center (LANSCE) linear accelerator.
Development of an electromagnetic isotope separator installed in the Wing-9 hot cells of the Chemistry Metallurgy Research building.
This accelerator is approximately 1 kilometer long and generates 1 milliamp of 800 MeV protons that are used to produce isotopes via spallation processes.
pearl1.lanl.gov /external/Research/ipf.htm   (536 words)

  
 accelerator - OneLook Dictionary Search
Phrases that include accelerator: linear accelerator, particle accelerator, accelerator factor, graphics accelerator, accelerator pedal, more...
noun: (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
Words similar to accelerator: catalyst, gas, gun, throttle, accelerator pedal, atom smasher, gas pedal, particle accelerator, throttle valve, more...
www.onelook.com /cgi-bin/cgiwrap/bware/dofind.cgi?word=accelerator   (335 words)

  
 Extension -- Facts, Info, and Encyclopedia article
For the extension of a ((chemistry) two or more atoms bound together as a single unit and forming part of a molecule) group or (The mathematics of generalized arithmetical operations) algebra, see (Click link for more info and facts about extension (algebra)) extension (algebra).
For the extension of a (Click link for more info and facts about bounded linear operator) bounded linear operator, see (Click link for more info and facts about continuous linear extension) continuous linear extension.
In (The philosophical study of being and knowing) metaphysics, extension is the (A basic or essential attribute shared by all members of a class) property of taking up (An area reserved for some particular purpose) space; see (Click link for more info and facts about Extension (metaphysics)) Extension (metaphysics).
www.absoluteastronomy.com /encyclopedia/E/Ex/Extension.htm   (308 words)

  
 Home Page of Density Functional Theory
Formulation along this line provides the possibility of the linear scaling algorithm currently in fashion, whose computational complexity goes like O(NlogN), essentially linear in N when N is very large.
Moving from E[psi] to E[n] in computational chemistry significantly reduces the computational effort needed to understand electronic properties of atoms, molecules, and solids.
The first Hohenberg-Kohn theorem asserts that the density of any system determines all ground-state properties of the system, that is, E=E[n0], where n0 is the ground-state density of the system.
www.unc.edu /~shubin/dft.html   (308 words)

  
 Partial Least Squares (PLS)
Partial least squares regression has been used in various disciplines such as chemistry, economics, medicine, psychology, and pharmaceutical science where predictive linear modeling, especially with a large number of predictors, is necessary.
Partial least squares regression is an extension of the multiple linear regression model (see, e.g., Multiple Regression or General Stepwise Regression).
In short, partial least squares regression is probably the least restrictive of the various multivariate extensions of the multiple linear regression model.
www.statsoft.com /textbook/stpls.html   (308 words)

  
 Symmetry-breaking and Molecular Evolution/1
Although quanta obey linear wave amplitude superposition, chemistry inherits non-linearity in the form of the attractive and repulsive charge interactions between orbital systems.
The the underlying linearity of wave superposition is illustrated in the formation of linear combinations of s and p wave functions to form the four sp3 hybrid orbitals.
Such non-linear interaction, combined with Pauli exclusion, is responsible for the diversity of chemical interaction from the covalent bond to the secondary and tertiary effects manifest in the complex structures of proteins and nucleic acids.
www.dhushara.com /book/biocos/symevol.htm   (5619 words)

  
 cat1_eng.qxd
The research activities of the Institute cover macromolecular chemistry, physical chemistry of macromolecules, polymer physics and polymer materials and meet the highest international standards.
The Institute of Macromolecular Chemistry carries out research in polymer science.
In particular, a new concept has been advanced concerning in situ formation of linear polymer blends and interpenetrating polymer networks.
www.nas.gov.ua /En/Inst/705.htm   (5619 words)

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