Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- Missouri University of Science and Technology (9)
- San Jose State University (6)
- University of Massachusetts Amherst (6)
- Utah State University (6)
- Eastern Illinois University (5)
-
- Iowa State University (4)
- Old Dominion University (4)
- University of Nebraska - Lincoln (4)
- Stephen F. Austin State University (3)
- Western Kentucky University (3)
- Portland State University (2)
- Union College (2)
- University of Central Florida (2)
- University of the Pacific (2)
- William & Mary (2)
- American University in Cairo (1)
- Colby College (1)
- Dartmouth College (1)
- Longwood University (1)
- Syracuse University (1)
- University of Denver (1)
- University of Nevada, Las Vegas (1)
- University of Richmond (1)
- University of Tennessee, Knoxville (1)
- Virginia Commonwealth University (1)
- Keyword
-
- Articles (6)
- 08. Centers of Polymer Science (4)
- Asia (4)
- Centers of polymer science research (4)
- Chemistry (4)
-
- Europe (4)
- Government polymer science research (4)
- History of Polymer Science (4)
- Industry polymer science research (4)
- Otto Vogl (4)
- United States (4)
- University polymer science research (4)
- XAS (4)
- Absorption (2)
- Anisotropic (2)
- Band (2)
- Chromium (2)
- Compounds (2)
- Conduction (2)
- Demonstrations (2)
- Effects (2)
- G-Ratios (2)
- Linewidths (2)
- Mott (2)
- N2H4 (2)
- Oxidation (2)
- Photodissociation (2)
- Rbx(NH3)1-x (2)
- Rubidium (2)
- Scattering theory (2)
- Publication
-
- Chemistry Faculty Research & Creative Works (8)
- Masters Theses (5)
- Chemistry & Biochemistry Theses & Dissertations (4)
- Craig J. Eckhardt Publications (4)
- Mark S. Gordon (4)
-
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (3)
- Faculty Publications (3)
- Faculty Publications, Chemistry (3)
- Juana Vivó Acrivos (3)
- Masters Theses & Specialist Projects (3)
- Chemistry Department Faculty Publication Series (2)
- Dissertations and Theses (2)
- Dissertations, Theses, and Masters Projects (2)
- Doctoral Dissertations (2)
- Emeritus Faculty Author Gallery (2)
- Honors Theses (2)
- Otto Vogl (2)
- Retrospective Theses and Dissertations (2)
- University of the Pacific Theses and Dissertations (2)
- Archived Theses and Dissertations (1)
- Chemistry - All Scholarship (1)
- Chemistry Faculty Publications (1)
- Chemistry Publications (1)
- Chemistry and Biochemistry Faculty Publications (1)
- Dartmouth Scholarship (1)
- Faculty Honor Lectures (1)
- Publications (WR) (1)
- Rocky Mountain Conference on Magnetic Resonance (1)
- Senior Scholar Papers (1)
- Stephen E. Bialkowski (1)
- Publication Type
Articles 31 - 60 of 70
Full-Text Articles in Physical Sciences and Mathematics
A Technique For The Isolation And Identification Of Aliphatic Amines In Water, Peter Alan Drew
A Technique For The Isolation And Identification Of Aliphatic Amines In Water, Peter Alan Drew
Chemistry & Biochemistry Theses & Dissertations
Small, aliphatic amines added to a basic, aqueous solution (16.2 L) at a concentration of 100 parts per billion were isolated by sorption on a small column of macroreticular resin. The amines were eluted with diethyl ether; the eluate concentrated, and the compounds separated and identified by gas chromatography. The efficiency of the recovery of a-nines ranged from 5 to 28%.
A protocol for derivatizing pyrrolidine and n-pentylamine in ether with fluorinated acylating agents was developed. The method was found to be adequate for the detection of approximately 13 micrograms of &-nines in concentrated ether extract.
Environmental water samples …
Determination Of Diffusion Coefficients Of Ions In Gels, Kelly A. Sanderson
Determination Of Diffusion Coefficients Of Ions In Gels, Kelly A. Sanderson
Theses & Honors Papers
No abstract provided.
Centers Of Polymer Research; Polymer Science In Kyoto, Japan, Otto Vogl, A. Nakajima
Centers Of Polymer Research; Polymer Science In Kyoto, Japan, Otto Vogl, A. Nakajima
Emeritus Faculty Author Gallery
No abstract provided.
Flow Injection Sample Introduction For Atomic-Absorption Spectrometry: Applications Of A Simplified Model For Dispersion, Julian Tyson, A. B. Idris
Flow Injection Sample Introduction For Atomic-Absorption Spectrometry: Applications Of A Simplified Model For Dispersion, Julian Tyson, A. B. Idris
Chemistry Department Faculty Publication Series
No abstract provided.
Flow Injection Techniques In Atomic Absorption Spectrometry, Julian Tyson
Flow Injection Techniques In Atomic Absorption Spectrometry, Julian Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Collisional Depolarization Of State Selected (J,M J ) Bao A 1Σ+ Measured By Optical–Optical Double Resonance, Stuart J. Silvers, Richard A. Gottscho, Robert W. Field
Collisional Depolarization Of State Selected (J,M J ) Bao A 1Σ+ Measured By Optical–Optical Double Resonance, Stuart J. Silvers, Richard A. Gottscho, Robert W. Field
Chemistry Publications
The optical–optical double resonance (OODR) technique is used to investigate the change in magnetic quantum number (M) a state selected molecule undergoes on collision with other molecules. A first linearly polarized dye laser prepares A 1Σ+BaO(v = 1) in the J = 1, M = 0 sublevel. The extent of collisional transfer to other M sublevels of both J = 1 and J = 2 is then probed by a second polarized dye laser which induces fluorescence from the C 1Σ+ state. Elastic collisions (ΔJ = 0) between BaO (A …
A White Ammonia Fountain, John T. Moore
A White Ammonia Fountain, John T. Moore
Faculty Publications
Red, white, and blue ammonia fountains are a stunning addition to chemistry magic shows.
Classical Demonstrations Performed To A New Beat, John T. Moore
Classical Demonstrations Performed To A New Beat, John T. Moore
Faculty Publications
Music can help fill the gaps in time during demonstrations and make demonstrations more exciting.
A Rolling Laboratory Platform For The Mobility Handicapped, John T. Moore
A Rolling Laboratory Platform For The Mobility Handicapped, John T. Moore
Faculty Publications
Portable laboratory stations designed for use by the mobility handicapped are available, but the expense of these precludes their use by many institutions. These authors share a more affordable solution.
Expansion Approach To Photodissociation Dynamics. I. Theory, Kazuo Takatsuka, Mark S. Gordon
Expansion Approach To Photodissociation Dynamics. I. Theory, Kazuo Takatsuka, Mark S. Gordon
Mark S. Gordon
We propose a new formulation for a photodissociation process to which an expansional (or algebraic) quantum‐variation‐method of scattering is applicable. By solving a ’’full collision’’ problem which describes a multichannel process on the repulsive surface, the photodissociation scheme takes account of interchannel coupling from the outset. Our expression for the amplitude of the partial linewidth is similar to that of the ’’half‐collision’’ approximation of Jortner e t a l. The present formalism differs in that the scattering wave functions take acount of interchannel coupling exactly. As a result, only on‐the‐energy‐shell contributions appear in the partial linewidth.
Expansion Approach To Photodissociation Dynamics. Ii. Correction Formula For Linewidth And Numerical Examples For Hcn, Kazuo Takatsuka, Mark S. Gordon
Expansion Approach To Photodissociation Dynamics. Ii. Correction Formula For Linewidth And Numerical Examples For Hcn, Kazuo Takatsuka, Mark S. Gordon
Mark S. Gordon
A correction formula for energy disposal and linewidth of photodissociation dynamics is proposed. This formula was derived from an identity similar to the Kato identity of the scattering theory. Thanks to the correction formula the resultant linewidth turns out to be more accurate and stable even when a relatively poor basis set is used. Numerical examples for assumed direct dissociation of HCN, DCN, and TCN and for the predissociation of HCN and DCN are presented.
A Quantitative Test Of Unimolecular Rate Theory In The Multi‐Photon Dissociation Of Cf2Cfcl, John C. Stephenson, Stephen E. Bialkowski, David S. King, Everet Thiele, James Stone, Myron F. Goodman
A Quantitative Test Of Unimolecular Rate Theory In The Multi‐Photon Dissociation Of Cf2Cfcl, John C. Stephenson, Stephen E. Bialkowski, David S. King, Everet Thiele, James Stone, Myron F. Goodman
Stephen E. Bialkowski
We have measured the distribution of total energy in reaction products for the CO2 laser‐induced MPD: CF2CFCl→CF2+CFC1. From a separate study of MPD rates as a function of laser intensity and inert buffer gas pressure, reliable estimates of the radiative pumping rates are known for this reaction. These results, when analyzed together, allow us to extract a unimolecular A factor from the MPD data. The determined value A = 3×1016 sec−1 agrees well with estimates based on independent thermal data.
Centers Of Polymer Research; Polymer Science In Kyoto, Japan, Otto Vogl, A. Nakajima
Centers Of Polymer Research; Polymer Science In Kyoto, Japan, Otto Vogl, A. Nakajima
Otto Vogl
No abstract provided.
Effects Of N2h4 On The Transition Temperature In The Anisotropic Superconductor Tase3, K. Yamaya, T. H. Geballe, Juana Vivó Acrivos, J. Code
Effects Of N2h4 On The Transition Temperature In The Anisotropic Superconductor Tase3, K. Yamaya, T. H. Geballe, Juana Vivó Acrivos, J. Code
Faculty Publications, Chemistry
No abstract provided.
Conduction Band Symmetry In Ta Chalcogenides From Ta L Edge X-Ray Absorption Spectroscopy (Xas), Juana Vivó Acrivos, S.S. P. Parkin, J. Code, J. Reynolds, K. Hathaway, H. Kurasaki, E. Marseglia
Conduction Band Symmetry In Ta Chalcogenides From Ta L Edge X-Ray Absorption Spectroscopy (Xas), Juana Vivó Acrivos, S.S. P. Parkin, J. Code, J. Reynolds, K. Hathaway, H. Kurasaki, E. Marseglia
Faculty Publications, Chemistry
No abstract provided.
Mott G-Ratios In Rbx(Nh3)1-X And Oxidation State Of Rubidium Compounds From Xas, Juana Vivó Acrivos, K. Hathaway, A. Robertson, M. P. Klein, A. Thompson
Mott G-Ratios In Rbx(Nh3)1-X And Oxidation State Of Rubidium Compounds From Xas, Juana Vivó Acrivos, K. Hathaway, A. Robertson, M. P. Klein, A. Thompson
Faculty Publications, Chemistry
The x-ray absorption spectra (XAS) of Rb metal, Rh,("JH,J, ,, 2H-NbSe2Rb111x and RbBr near the Rb K-edge have been used to ascertain that the oxidation state V of rubidium dissolved in ammonia and intt:rcalated in the layer compound is in the range 0 < V < I. Theobservededge shifts with temperature for semimctals are explainedin terms of the population of band states, and the ratio of the density states near the mobility edge over that calculated for a free electron model, i.e. the Mott ratio g, is ascertained using a semiempirical relation developed for the x-ray absorbance from Is levels to empty states ncar the mobility edge.
Method For Direct Preparation For 1,2,4-Triazole From Hydrazine And Formamide, Harris E. Petree, Joseph R. Pociask, John T. Gupton
Method For Direct Preparation For 1,2,4-Triazole From Hydrazine And Formamide, Harris E. Petree, Joseph R. Pociask, John T. Gupton
Chemistry Faculty Publications
Process for the preparation of 1,2,4-triazole comprises contacting hydrazine or its aqueous solutions with at least about 2.5 moles of formamide at a temperature of 140° to 210° C. and then recovering the resultant 1,2,4- triazole in yields of 92-98% with 94-98% purity. The formamide is maintained in an excess over about the 2.5 molar amount consumed in the reaction with the hydrazine. Recovery steps for isolating the 1,2,4-triazole are disclosed.
Effect Of Solvent On Properties Of The Liquid Metal Surface, J. P. Badiali, M. I. Rosinberg, Jerry Goodisman
Effect Of Solvent On Properties Of The Liquid Metal Surface, J. P. Badiali, M. I. Rosinberg, Jerry Goodisman
Chemistry - All Scholarship
We calculate the difference in the surface potentials between the free surface of a liquid metal and the same metal in an ideally polarizable interface at the point of zero charge. This difference, δXm, is due to the deformation of the electronic cloud of the metal by the solvent molecules. The simple model used for the free (metal-metal vapor) surface yields qualitatively correct work functions for a number of metals (Hg, Cd, In, Zn, Pb, Ga, A1). Two simple ways to model the metal-solvent interaction are proposed and calculations of δXm made for each. One, the dielectric film model, considers …
Proton Transfers In Hydrogen‐Bonded Systems. Vi. Electronic Redistributions In (N2h7)+ And (O2h5)+, Steve Scheiner
Proton Transfers In Hydrogen‐Bonded Systems. Vi. Electronic Redistributions In (N2h7)+ And (O2h5)+, Steve Scheiner
Chemistry and Biochemistry Faculty Publications
Electronic rearrangements accompanying transfer of the central proton between the two XHn units of (H3NHNH3)+ and (H2OHOH2)+ are studied using ab initio molecular orbital methods. Electron density difference maps are calculated by subtracting the density of the equilibrium structure (X–H‐‐‐X) from that of the midpoint geometry (X‐‐H‐‐X) using the split‐valence 4‐31G basis set. Some of the features revealed by the maps are common to both systems while others indicate significant differences between nitrogen and oxygen. Decomposition of the total electron density into …
Distribution Of Polymer Deposition In Glow Discharge Polymerization In A Capacitively Coupled System, N. Inagaki, H. Yasuda
Distribution Of Polymer Deposition In Glow Discharge Polymerization In A Capacitively Coupled System, N. Inagaki, H. Yasuda
Chemistry Faculty Research & Creative Works
The manner by which polymers created by plasma uniformly deposit onto substrates was sought. By rotating the substrate placed midway between electrodes, completely uniform distribution of polymer deposition was accomplished, and the deviation of the polymer deposition in a radius direction of the rotating substrate was within experimental errors. Materials of the substrate on which the polymer deposited had no influence on uniformity of polymer deposition, but the electrical circuit of power source, i.e., grounding an electrode, markedly disturbed the uniformity. Thickness of polymers deposited on the substrate was linearly proportional to reaction time. Surface energies of deposited polymers prepared …
Sodium Accumulation In Serpentine And Non-Serpentine Populations Of The Milkweed Asclepias Fascicularis, Paul N. Thomas
Sodium Accumulation In Serpentine And Non-Serpentine Populations Of The Milkweed Asclepias Fascicularis, Paul N. Thomas
University of the Pacific Theses and Dissertations
Because Asclepias fascicularis is found on both serpentine and non-serpentine soils in California and because it was reported to accumulate sodium, this study was initiated to establish the degree of accumulation of this ion in these two soil types. Two other species, Asclepias speciosa Torr. and Asclepias cordifolia (Benth.) Jeps. were included to determine if this characteristic of accumulation occurs in other members of this genus.
A Matrix Isolation Study Of The Reactions Of Oxygen(Singlet-D) With The Chlorofluoromethanes Fluorotrichloromethane, Dichlorodifluoromethane And Chlorotrifluoromethane, Richard Thomason Burke
A Matrix Isolation Study Of The Reactions Of Oxygen(Singlet-D) With The Chlorofluoromethanes Fluorotrichloromethane, Dichlorodifluoromethane And Chlorotrifluoromethane, Richard Thomason Burke
University of the Pacific Theses and Dissertations
We have studied the reactions of O(1D) with CC13F, CC12F2 and CC1F3 in CO2, SF6 and N2O matrices, and in neat mixtures. Photolysis of cryogenic mixtures of ozone and the chlorofluoromethanes in various matrix hosts resulted in production of O(1D) which migrated through the matrix to react with the Freon molecules. Products were detected by infrared spectroscopy of the matrix deposits, with assignments confirmed by comparison of 16O and 18O absorption bands with literature values. Evidence for oxygen atom insertion into a C-C1 …
Cis Labilization: A Study Of The Reactions Of Group 6 Pentacarbonyl Phosphido Anions, Matthew J. Madigan
Cis Labilization: A Study Of The Reactions Of Group 6 Pentacarbonyl Phosphido Anions, Matthew J. Madigan
Masters Theses
The synthesis of cis-(OC)4M(PPh2H)L (M=Cr,Mo,W; L=PPh3,PPh2Et,PPhEt2,PEt3) can be achieved by treating (OC)5MPPh2H with potassium tert-butoxide in the presence of L. […] The products are easily isolated and are not contaminated with trans isomers. Obtained as a minor product is [(OC)4MPPh2]2.
The reaction of (OC)5WPPh2H with potassium tert-butoxide generates [(OC)5WPPh2]- which reacts with (OC)5WPPh2H to give [(OC)5WPPh2W(CO)5] …
Neutron Activation Analysis Of Nuclides From Stellar And Man-Induced Nuclear Reactions, Lawrence Lee Oliver
Neutron Activation Analysis Of Nuclides From Stellar And Man-Induced Nuclear Reactions, Lawrence Lee Oliver
Doctoral Dissertations
"Neutron activation and γ-counting were used to determine the relative abundances of six stable tellurium isotopes in the acid-etched residues of the Allende meteorite. The results were correlated with the isotopic compositions of xenon and the elemental abundances of helium and neon in similarly prepared residues. Nucleosynthesis appears to be the only viable explanation for the anomalous isotopic and elemental compositions observed in these residues. Our results suggest that the solar system condensed from an isotopically and chemically zoned nebula that was produced by the explosion of a supernova, concentric with the present sun.
A combination of neutron activation and …
The Acid-Catalyzed Hydration Of Phenylallene, Gary Wayne Long
The Acid-Catalyzed Hydration Of Phenylallene, Gary Wayne Long
Dissertations, Theses, and Masters Projects
No abstract provided.
Controlling The Number Of Metal Sites To Which A Polytertiary Phosphine Coordinates In Tungsten Carbonyls, Rodney D. Borger
Controlling The Number Of Metal Sites To Which A Polytertiary Phosphine Coordinates In Tungsten Carbonyls, Rodney D. Borger
Masters Theses
Judiciously selected coordinated fragments of Ph2PCH2CH2PPhCH2-CH2PPh2 [(OC)5WPPh2H, (OC)5WPPh2CH=CH2 and (OC)5WPPh(CH=CH2)2] were used to construct its five possible nonchelated pentacarbonyltungsten complexes. These are the trimetallic (OC)5WPPh[CH2CH2PPh2W(CO)5]2 and the two pairs of constitutional isomers, (OC)5WPPh[CH2CH2PPh2]2 and (OC)5WPPh2CH2CH2PPhCH2CH2PPh2, and PPh[CH2CH2 …
Analysis Of Coal Fractions Using Dibromotriphenyl-Phosphorane: A Selective Ether Cleaving Reagent, Michael L. Ballard
Analysis Of Coal Fractions Using Dibromotriphenyl-Phosphorane: A Selective Ether Cleaving Reagent, Michael L. Ballard
Masters Theses
Dibromotriphenylphosphorane (DTP), in acetonitrile at 40°C, was found to cleave benzyl phenyl ether in preference to di-alkyl or other aryl alkyl ethers. Competition between 10 mmoles benzyl phenyl ether and 10 mmoles di-n-octyl ether for 0.92 mmole of DTP gave 48% cleavage of benzyl phenyl ether and 1.3% cleavage of di-n-octyl ether based on DTP. Reaction of benzyl phenyl ether and di-n-octyl ether separately with DTP at 40°C produced 80% and 8% cleavage, respectively. Reactions of DTP with diphenyl ether, butyl phenyl ether, phenyl cyclohexyl ether and benzyl benzoate at 40°C produced less than 3% cleavage in all cases.
Reaction …
Similarity In Phase Diagrams Between Ionic And Nonionic Surfactant Solutions At Constant Temperature, K. Shinoda, H. Kunieda, N. Obi, Stig Friberg
Similarity In Phase Diagrams Between Ionic And Nonionic Surfactant Solutions At Constant Temperature, K. Shinoda, H. Kunieda, N. Obi, Stig Friberg
Chemistry Faculty Research & Creative Works
No abstract provided.
The Initial And Terminating Stage Of Glow Discharge Polymerization Investigated By Thickness Monitor, N. Inagaki, H. Yasuda
The Initial And Terminating Stage Of Glow Discharge Polymerization Investigated By Thickness Monitor, N. Inagaki, H. Yasuda
Chemistry Faculty Research & Creative Works
An attempt to discuss the initial stage and terminating stage of glow discharge polymerization was made by selecting the monomer system of styrene and acetylene, which differ in their condensability, and a certain polymerization procedure. Results indicate the important aspects of the initial and terminating stages of glow discharge polymerization. These aspects may not play a significant role in the study of bulk properties of plasma‐polymerized polymers or in the study of polymer deposition rate. However, the initial stage effect might influence the adhesion of the polymer. The terminating stage effect might influence the surface characteristics of glow discharge‐polymerized polymers. …
Adhesion Of Glow Discharge Polymers To Metals And Polymers, N. Inagaki, H. Yasuda
Adhesion Of Glow Discharge Polymers To Metals And Polymers, N. Inagaki, H. Yasuda
Chemistry Faculty Research & Creative Works
Adhesion of glow discharge polymers to metals and polymers in an adhesive joint was measured by lap‐shear test and immersion in hot water of 70°C for an extended time. A glow discharge polymer was deposited onto polymers [polyethylene and poly(tetrafluoroethylene)] and metals (aluminum and stainless steel) prior to when the polymer and metal were joined. It is found that the lap‐shear strength is enhanced by coating the surfaces of these substrates with plasma film produced from methane, ethylene, and acetylene, and that deterioration of the adhesive bonding part, when immersed in hot water of 70°C, is strongly dependent on the …