Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- TÜBİTAK (2628)
- Chinese Chemical Society | Xiamen University (2294)
- Selected Works (1481)
- Missouri University of Science and Technology (1343)
- University of Nebraska - Lincoln (925)
-
- Marquette University (889)
- Brigham Young University (733)
- University of South Carolina (650)
- Western University (620)
- Louisiana State University (584)
- Union College (567)
- University of Nevada, Las Vegas (563)
- Old Dominion University (561)
- University of Tennessee, Knoxville (526)
- University of Kentucky (491)
- Utah State University (482)
- Portland State University (478)
- Chulalongkorn University (449)
- Western Kentucky University (398)
- Cleveland State University (384)
- City University of New York (CUNY) (380)
- University of Denver (370)
- The University of Southern Mississippi (351)
- Western Michigan University (350)
- University of Massachusetts Amherst (344)
- William & Mary (342)
- University of Texas Rio Grande Valley (341)
- Technological University Dublin (325)
- Virginia Commonwealth University (323)
- University of Central Florida (320)
- Keyword
-
- Chemistry (1020)
- Synthesis (351)
- Nanoparticles (310)
- Pure sciences (277)
- Electrochemistry (272)
-
- Catalysis (246)
- Mass spectrometry (238)
- Otto Vogl (221)
- Chemistry and Biochemistry (217)
- Department of Chemistry (209)
- Atmospheric chemistry (202)
- Fluorescence (201)
- History of Polymer Science (192)
- Spectroscopy (184)
- Emissions (170)
- Adsorption (165)
- Pollutants (163)
- 1 (162)
- Oxidation (150)
- NMR (147)
- Copper (144)
- Kinetics (140)
- Cancer (139)
- Polymers (137)
- Cyclic voltammetry (134)
- Organic chemistry (128)
- Polymer (124)
- 2 (121)
- Crystal structure (118)
- Density functional theory (114)
- Publication Year
- Publication
-
- Turkish Journal of Chemistry (2628)
- Journal of Electrochemistry (2294)
- Theses and Dissertations (1320)
- Chemistry Faculty Publications (1120)
- Honors Theses (1069)
-
- Electronic Theses and Dissertations (860)
- Chemistry Faculty Research & Creative Works (793)
- Chemistry Faculty Research and Publications (659)
- Masters Theses (652)
- Faculty Publications (612)
- Doctoral Dissertations (521)
- Chemistry Faculty Publications and Presentations (491)
- Dissertations (484)
- Chulalongkorn University Theses and Dissertations (Chula ETD) (449)
- LSU Doctoral Dissertations (418)
- Chemistry and Biochemistry Faculty Publications (379)
- Electronic Thesis and Dissertation Repository (367)
- Chemistry Publications (344)
- Masters Theses & Specialist Projects (300)
- Chemistry Department: Faculty Publications (293)
- Otto Vogl (273)
- USF Tampa Graduate Theses and Dissertations (272)
- Chemistry & Biochemistry Faculty Publications (264)
- Dissertations, Theses, and Masters Projects (259)
- Journal of Undergraduate Research (254)
- Master's Theses (244)
- Articles (238)
- Wayne State University Dissertations (216)
- Dissertations and Theses (203)
- FIU Electronic Theses and Dissertations (200)
- Publication Type
Articles 28591 - 28620 of 34711
Full-Text Articles in Physical Sciences and Mathematics
4. Bengt Rånby (1920-2000), Otto Vogl, Gerald S. Kirshenbaum
4. Bengt Rånby (1920-2000), Otto Vogl, Gerald S. Kirshenbaum
Otto Vogl
No abstract provided.
Formation Of Aryl-Nitrogen Bonds Using A Soluble Copper(I) Catalyst, Dhandapani Venkataraman
Formation Of Aryl-Nitrogen Bonds Using A Soluble Copper(I) Catalyst, Dhandapani Venkataraman
Dhandapani Venkataraman
No abstract provided.
Increased Severity Of Hsv-1 Keratitis And Mortality In Mice Lacking The 2–5a-Dependent Rnase L Gene, Xiaodong Zheng, Robert H. Silverman, Aimin Zhou, Tomoko Goto, Byoung Se Kwon, Herbert E. Kaufman, James M. Hill
Increased Severity Of Hsv-1 Keratitis And Mortality In Mice Lacking The 2–5a-Dependent Rnase L Gene, Xiaodong Zheng, Robert H. Silverman, Aimin Zhou, Tomoko Goto, Byoung Se Kwon, Herbert E. Kaufman, James M. Hill
Chemistry Faculty Publications
Purpose: The2′,5′-oligoadenylate-dependent RNase L gene functions in the interferon-inducible RNA decay pathway known as the 2–5A system. The purpose of this study was to determine whether the absence of this gene affects the pathogenesis of herpes simplex virus type 1 (HSV-1) ocular infection in the mouse. Methods: HSV-1 (strain McKrae) was applied bilaterally to unscarified corneas of RNase L–null mice and congenic controls. To evaluate the severity of herpetic keratitis, slit lamp examinations (SLE) were performed every other day for 14 days. To study corneal histology and apoptosis, HSV-1–inoculated RNase-L-null and congenic control mice, as well as mock-inoculated mice (apoptosis …
Cooperativity Of Dna Object Self-Assembly, Ava Caudill Dykes
Cooperativity Of Dna Object Self-Assembly, Ava Caudill Dykes
Theses, Dissertations and Capstones
In this study, the temperature dependence of self-assembling DNA structures was investigated. Specially designed two-dimensional DNA nanoarrays offer not only structural stability not normally associated with DNA, but also provide several possible sites of interaction, referred to as free ends, which can be easily exploited through conventional Watson-Crick base pairing. The ability to synthesize two-dimensional DNA nanoarrays was corroborated by confirming the presence of the nanoarrays by AFM imaging in air. The physical characteristics of two-dimensional DNA nanoarrays were also studied. DNA nanoarray synthesis occurs via a self-assembly process based on Watson-Crick base pairing. This self-assembly occurs through an annealing …
A Kinetic Study Of The Photolysis Of Tris(2,4-Pentanedionato)Cobalt(Iii) And Bis(2,4-Pentanedionato)Cobalt(Ii) In Chloroform, Son L. Phan, Keith J. Cendak, Patrick E. Hoggard
A Kinetic Study Of The Photolysis Of Tris(2,4-Pentanedionato)Cobalt(Iii) And Bis(2,4-Pentanedionato)Cobalt(Ii) In Chloroform, Son L. Phan, Keith J. Cendak, Patrick E. Hoggard
Chemistry and Biochemistry
Under 254nm irradiation in chloroform, Co(acac)3 (Hacac = 2,4-pentanedione) is converted to Co(acac)2 and then to CoCl2. The metal complex is the primary photoactive species in the photoreduction of Co(acac)3, but the photosubstitution of Co(acac)2 appears to occur primarily through absorption of light by the solvent, followed by a chain reaction in which chlorine atoms displace pentanedionyl radicals. The photosubstitution rate law is complex, and the apparent quantum yield (based on total light absorbed) varies with incident light intensity and Co(acac)2 concentration, reaching values as high as 16 under the conditions of …
An Alternative Use For Bagasse: Stabilizing Agent For Lead Waste, Michael A. Janusa
An Alternative Use For Bagasse: Stabilizing Agent For Lead Waste, Michael A. Janusa
Faculty Publications
Bagasse amounts to one- third of the cane ground and supplies fuel for the generation of steam in raw factories; however, most factories have an excess of bagasse during regular grinding season. Another method for the utilization of bagasse was investigated using bagasse as a stabilizing agent for heavy metal waste solidified /stabilized in cement. Lead nitrate was used as the model heavy me ta l waste with a 10 or 15 per cent lead by weight to cement loading. Samples were cured for 7, 14, and 28 days at 24°C. Samples containing bagasse typically resulted in TCLP extract lead …
Multiple Separations Facilitate Identification Of Protein Variants By Mass Spectrometry, Zhongli Zhang, David L. Smith, Jean B. Smith
Multiple Separations Facilitate Identification Of Protein Variants By Mass Spectrometry, Zhongli Zhang, David L. Smith, Jean B. Smith
Chemistry Department: Faculty Publications
Identification of variant proteins from complex biological samples promises to contribute much to our understanding of the etiology of pathological states. Characterization of variants, due either to genetic mutations in protein sequences or to post-translational modifications, is considerably more difficult than the simple protein identifications typical of most current proteomic investigations. Identification of a few peptides by database retrieval is not adequate when the goal is to have a complete understanding of the modifications of the protein. Although one advantage of mass spectrometry is its ability to obtain specific responses to several components, the complexity of biological samples is often …
Cerumen Composition By Flash Pyrolysis-Gas Chromatography/Mass Spectrometry, Craig N. Burkhart, Michael A. Kruge, Craig G. Burkhart, Curtis Black
Cerumen Composition By Flash Pyrolysis-Gas Chromatography/Mass Spectrometry, Craig N. Burkhart, Michael A. Kruge, Craig G. Burkhart, Curtis Black
Department of Earth and Environmental Studies Faculty Scholarship and Creative Works
Objective: To assess the chemical composition of cerumen by flash pyrolysis-gas chromatography/mass spectrometry.
Study Design: Collected earwax specimens were fractionated into residue and supernatant by means of deoxycholate. This natural bile acid produces significantly better disintegration of earwax in vitro than do presently available ceruminolytic preparations, and also has demonstrated excellent clinical results in vivo to date.
Patients: The sample for analysis was obtained from a patient with clinical earwax impaction.
Results: The supernatant is composed of simple aromatic hydrocarbons, C5-Cl 7 straight-chain hydrocarbons, a complex mixture of compounds tentatively identified as diterpenoids, …
Uranium-Uranium Collisions At Relativistic Energies, Bao-An Li, Matt Tilley
Uranium-Uranium Collisions At Relativistic Energies, Bao-An Li, Matt Tilley
Journal of the Arkansas Academy of Science
No abstract provided.
Structural, Electronic, And Magnetic Properties Of Lani₅₋ₓtₓ (T = Fe, Mn) Compounds, Jinbo Yang, Chiu-Ying Tai, G. K. Marasinghe, George Daniel Waddill, Oran Allan Pringle, William Joseph James, Y. Kong
Structural, Electronic, And Magnetic Properties Of Lani₅₋ₓtₓ (T = Fe, Mn) Compounds, Jinbo Yang, Chiu-Ying Tai, G. K. Marasinghe, George Daniel Waddill, Oran Allan Pringle, William Joseph James, Y. Kong
Physics Faculty Research & Creative Works
Structures and magnetic properties of the LaNi5-xFex and LaNi5-xMnx compounds have been investigated using neutron diffraction and first-principles tight-binding-linear-muffin-tin-orbital methods. Both neutron diffraction refinement data and total energy calculations show that the Fe and Mn atoms preferentially occupy the 3g sites in the hexagonal CaCu5-type structure. The calculated magnetic moments of Fe and Ni atoms are of 2.4-2.5μB and 0.2-0.5μB in LaNi5-xFex, respectively. The magnetic structure exhibits more localized moments at Fe atoms in LaNi5-xFex when x ≤ 1.0. Electronic structure calculations indicate …
Dynamics Of Poly(Vinyl Acetate)-D₃ On Silica, Robert D. O'Connor, Frank D. Blum, Gu Xu
Dynamics Of Poly(Vinyl Acetate)-D₃ On Silica, Robert D. O'Connor, Frank D. Blum, Gu Xu
Mechanical and Aerospace Engineering Faculty Research & Creative Works
Poly(vinyl acetate) (PVAc) is an important polymer in applications because of both its bulk and surface characteristics. Its chain architecture gives it a low Tg and, generally, good qualities for processing and applications, which include paints, adhesives, thin films and surface coatings. In this study, we investigate the surface dynamics of PVAc absorbed onto silica with deuterium nuclear magnetic resonance (2H NMR). For dynamics studies, 2H NMR is an excellent technique because it uses an innocuous probe that can report on correlation times (τc) from approximately 10-8 s to 10 s. We report the use of two-dimensional exchange NMR (2D-X) …
Non-Commercial Software For The Analysis And Interpretation Of High Resolution Molecular Spectra, A. R. Ford, Scott W. Reeve
Non-Commercial Software For The Analysis And Interpretation Of High Resolution Molecular Spectra, A. R. Ford, Scott W. Reeve
Journal of the Arkansas Academy of Science
No abstract provided.
Undergraduate Research Opportunities In Microelectronics At Boise State University, S. Burkett, J. Lusth, D. Russell, W. B. Knowlton, S. Parke
Undergraduate Research Opportunities In Microelectronics At Boise State University, S. Burkett, J. Lusth, D. Russell, W. B. Knowlton, S. Parke
Chemistry and Biochemistry Faculty Publications and Presentations
Several opportunities exist for undergraduates in the Microelectronics area at Boise State University. This paper will describe the Research Experience for Undergraduates (REU) program funded by the National Science Foundation and other opportunities that have resulted for undergraduates due to external support. BSU became a NSF REU site for Microelectronics research in 1999. Each year 10 students are recruited nation-wide from various engineering and science disciplines to come to BSU for 8 weeks. The students work intensively with various faculty advisors and graduate student mentors. Another unique feature of our program is the tie to local industry. In 1999-2001, three …
On-Road Remote Sensing Of Automobile Emissions In The Chicago Area: Year 4, Sajal S. Pokharel, Gary A. Bishop, Donald H. Stedman
On-Road Remote Sensing Of Automobile Emissions In The Chicago Area: Year 4, Sajal S. Pokharel, Gary A. Bishop, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
On-Road Remote Sensing Of Automobile Emissions In The Los Angeles Area: Year 2, Sajal S. Pokharel, Gary A. Bishop, Donald H. Stedman
On-Road Remote Sensing Of Automobile Emissions In The Los Angeles Area: Year 2, Sajal S. Pokharel, Gary A. Bishop, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
Fuel-Based On-Road Motor Vehicle Emissions Inventory For The Denver Metropolitan Area, Sajal S. Pokharel, Gary A. Bishop, Donald H. Stedman
Fuel-Based On-Road Motor Vehicle Emissions Inventory For The Denver Metropolitan Area, Sajal S. Pokharel, Gary A. Bishop, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
Fuel-Based On-Road Motor Vehicle Emissions Inventory For The Denver Metropolitan Area (Presentation), Sajal S. Pokharel, Gary A. Bishop, Donald H. Stedman
Fuel-Based On-Road Motor Vehicle Emissions Inventory For The Denver Metropolitan Area (Presentation), Sajal S. Pokharel, Gary A. Bishop, Donald H. Stedman
Fuel Efficiency Automobile Test Publications
No abstract provided.
Intrinsically Bent Dna In The Promoter Regions Of The Yeast Gal1–10 And Gal80 Genes, Ralph C. Bash, Jeff Vargason, P. Shing Ho, D. Lohr
Intrinsically Bent Dna In The Promoter Regions Of The Yeast Gal1–10 And Gal80 Genes, Ralph C. Bash, Jeff Vargason, P. Shing Ho, D. Lohr
Faculty Publications - Department of Biological & Molecular Science
Circular permutation analysis has detected fairly strong sites of intrinsic DNA bending on the promoter regions of the yeast GAL1–10 and GAL80 genes. These bends lie in functionally suggestive locations. On the promoter of the GAL1–10 structural genes, strong bends bracket nucleosome B, which lies between the UASG and the GAL1 TATA. These intrinsic bends could help position nucleosome B. Nucleosome B plus two other promoter nucleosomes protect the TATA and start site elements in the inactive state of expression but are completely disrupted (removed) when GAL1–10 expression is induced. The strongest intrinsic bend (;70°) lies at the downstream edge …
Development Of Amperometric Enzyme Electrodes For Glucose And Hypoxanthine., Eilish Broderick
Development Of Amperometric Enzyme Electrodes For Glucose And Hypoxanthine., Eilish Broderick
Theses
This thesis is concerned with the immobilisation of enzymes on electrosynthesised poly (o- phenylenediamine) membranes for use on amperometric electrodes. The thesis opens with a discussion of the basic principles of enzymology and a review of a diverse range of biosensors, followed by a consideration of amperometry as governed by the Cottrell equation.
Glucose oxidase and horseradish peroxidase were co-immobilised in poly (o-phenylenediamine) on platinum electrodes at + 0.6 V versus Ag/AgCl. Using this approach the enzymes are entrapped in a strongly adherent, highly reproducible thin membrane, of thickness approximately 10 nm. This one-step procedure produces a glucose sensor with …
Structural, Magnetic, And Mössbauer Spectral Study Of Er₂Fe₁₇ And Its Hydrides, Fernande Grandjean, Olivier Isnard, Dimitri Hautot, Gary J. Long
Structural, Magnetic, And Mössbauer Spectral Study Of Er₂Fe₁₇ And Its Hydrides, Fernande Grandjean, Olivier Isnard, Dimitri Hautot, Gary J. Long
Chemistry Faculty Research & Creative Works
The structural and magnetic properties of the Er2Fe17Hx compounds, where x is 0, 1, 2, 3, and 3.8, have been investigated by means of powder x-ray diffraction, thermal and ac magnetic susceptibility measurements, and iron-57 Mössbauer spectroscopy. The Er2Fe17Hx compounds crystallize in the hexagonal P63/mmc space group with the Th2Ni17-like structure, a structure which has both an iron-rich stoichiometry and disorder of the erbium and iron-iron 4f-4f dumbbell sites. The increase in the lattice parameters, the magnetic ordering temperature, the saturation magnetization, and the …
Preparation And Characterization Of Molecular Imprinting Polymer With (S)-Naproxen, Yue Hu
Preparation And Characterization Of Molecular Imprinting Polymer With (S)-Naproxen, Yue Hu
Dissertations, Theses, and Masters Projects
No abstract provided.
Characterization Of Cyclic And Linear Dipeptides, Christine Michelle Howard
Characterization Of Cyclic And Linear Dipeptides, Christine Michelle Howard
Dissertations, Theses, and Masters Projects
No abstract provided.
The Synthesis And Characterization Of Cu(I) Networks With Heterocyclic Bridging Ligands, Jonathan Timothy Maeyer
The Synthesis And Characterization Of Cu(I) Networks With Heterocyclic Bridging Ligands, Jonathan Timothy Maeyer
Dissertations, Theses, and Masters Projects
No abstract provided.
Fluoroalcohols As Nucleating Agents In Supersaturated Vapors: Efficient Clustering With Water In The Vapor Phase, V. Abdalsayed, Y. Ibrahim, M. Rusyniak, M. Rabeony, M. S. El-Shall
Fluoroalcohols As Nucleating Agents In Supersaturated Vapors: Efficient Clustering With Water In The Vapor Phase, V. Abdalsayed, Y. Ibrahim, M. Rusyniak, M. Rabeony, M. S. El-Shall
Chemistry Publications
Fluoroalcohols in small concentrations in the vapor phase display striking enhancing effects on homogeneous nucleation of supersaturated aliphatic alcohols, and on the formation of water clusters by supersonic expansion. The enhanced nucleationeffects are attributed to the surfactant properties of fluoroalcohols, which lower the surface tension of the growing droplets, and therefore lower the barrier to nucleation.
Synthesis And Characterization Of A Ruthenium-Thioxane Complex, Amanda Wroble, Scotty Sproles, Mark Draganjac, Paul M. Nave
Synthesis And Characterization Of A Ruthenium-Thioxane Complex, Amanda Wroble, Scotty Sproles, Mark Draganjac, Paul M. Nave
Journal of the Arkansas Academy of Science
No abstract provided.
Effects Of Humic Acids And Salinity On Pesticide Bioavailability And Toxicity As Estimated By Spme And Toxicity Tests, Laurent C. Mézin
Effects Of Humic Acids And Salinity On Pesticide Bioavailability And Toxicity As Estimated By Spme And Toxicity Tests, Laurent C. Mézin
Dissertations, Theses, and Masters Projects
The interactive effects of humic acids (HAs) and salinity on the bioavailability and toxicity of the pesticides chlorpyrifos and 4,4'-dichlorodiphenyltrichloroethane (DDT) were investigated. The effects of various HAs on the toxicity of chlorpyrifos were initially assessed with the chronic MicrotoxRTM test. Environmentally relevant concentrations of Aldrich, Peat, Leonardite and Suwannee River HAs had no significant effect on the toxicity of either chlorpyrifos or copper (Cu), the test's positive control. as reductions in contaminant toxicity had previously been reported for some contaminants by HAs, it appeared that salinity might be a mitigating factor. Thus salinity effects were further investigated with Aldrich …
Grading The General Chemistry Laboratory: A Constructivist Approach., Barbara Stewart
Grading The General Chemistry Laboratory: A Constructivist Approach., Barbara Stewart
Electronic Theses and Dissertations
Constructivist theories of learning posit that instructors cannot transfer their knowledge to students; students must actively construct their own understanding. The Inter-Chem-Net project uses technology and instrumentation to provide an individualized experience within the large general laboratory course, effectively establishing a constructivist methodology. A grading rubric was developed to communicate course expectations and provide an easy and reliable method of evaluating student work in the general chemistry laboratory. The grading rubric separates the learning outcomes into a checklist of skills associated with each particular grade. This checklist provides detailed feedback for individualized choices of experiments, a key component of the …
Hyperfine Interaction In The Hydrogen Atom, Ronald Lovett
Hyperfine Interaction In The Hydrogen Atom, Ronald Lovett
Topics in Quantum Mechanics
No abstract provided.
Time Evolving States, Ronald Lovett
Electronic Structures And Magnetism Of Lani₅₋ₓfeₓ Compounds, Jinbo Yang, Chiu-Ying Tai, G. K. Marasinghe, George Daniel Waddill, Oran Allan Pringle, William Joseph James
Electronic Structures And Magnetism Of Lani₅₋ₓfeₓ Compounds, Jinbo Yang, Chiu-Ying Tai, G. K. Marasinghe, George Daniel Waddill, Oran Allan Pringle, William Joseph James
Physics Faculty Research & Creative Works
A systematic study of the magnetic moments and hyperfine interactions of the LaNi5-xFex compounds was performed using the spin-polarized tight-binding-linear-muffin-tin-orbital methods (TBLMTO). The calculated results were compared with neutron diffraction and Mössbauer experimental data and found to be in good agreement. Fe atoms exhibit more localized magnetic moments in LaNi5-xFex when the Fe content x is lower than 1.0. The calculated magnetic moments of the Fe atoms approach values as large as 2.5μB due to the dilution effect. The strong s-d hybridization between the Ni and La atoms and the neighboring Fe in …