Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Environmental Sciences (498)
- Computer Sciences (410)
- Physics (373)
- Chemistry (351)
- Earth Sciences (300)
-
- Engineering (296)
- Life Sciences (261)
- Mathematics (254)
- Education (148)
- Social and Behavioral Sciences (145)
- Oceanography and Atmospheric Sciences and Meteorology (133)
- Science and Mathematics Education (127)
- Geology (113)
- Astrophysics and Astronomy (103)
- Environmental Health and Protection (88)
- Water Resource Management (84)
- Arts and Humanities (83)
- Natural Resources Management and Policy (83)
- Natural Resources and Conservation (79)
- Hydrology (78)
- Physical Chemistry (78)
- Statistics and Probability (73)
- Applied Mathematics (72)
- Computer Engineering (68)
- Soil Science (65)
- History (63)
- Materials Science and Engineering (60)
- Environmental Indicators and Impact Assessment (58)
- History of Science, Technology, and Medicine (56)
- Institution
-
- University of Nebraska - Lincoln (328)
- Utah State University (138)
- TÜBİTAK (124)
- Selected Works (81)
- Old Dominion University (78)
-
- William & Mary (71)
- Air Force Institute of Technology (69)
- Chinese Chemical Society | Xiamen University (67)
- Missouri University of Science and Technology (62)
- University of New Hampshire (59)
- Purdue University (52)
- Dartmouth College (48)
- University of Northern Iowa (48)
- University of Kentucky (45)
- Claremont Colleges (44)
- Syracuse University (43)
- Wright State University (40)
- Washington University in St. Louis (39)
- Portland State University (35)
- Singapore Management University (33)
- University of South Florida (33)
- California Polytechnic State University, San Luis Obispo (32)
- University of Colorado Law School (30)
- Western Michigan University (30)
- New Jersey Institute of Technology (29)
- University of Wollongong (29)
- Cleveland State University (27)
- Department of Primary Industries and Regional Development, Western Australia (27)
- Nova Southeastern University (24)
- University of Massachusetts Amherst (23)
- Keyword
-
- United States (25)
- Western Australia (23)
- Environmental (16)
- Geology (16)
- Impact (15)
-
- Geochemistry (14)
- Mathematics (14)
- Algorithms (13)
- Groundwater (13)
- History of Polymer Science (13)
- Otto Vogl (13)
- Statement (13)
- Climate Change (12)
- Cryology (12)
- Final (12)
- Glaciogeology (12)
- Glaciology (12)
- Research and Technical Reports (12)
- 04. Personalities in Polymer Science (11)
- Biographies (11)
- Management (11)
- Polymer scientists (11)
- Water quality (11)
- West (11)
- College of Engineering and Computer Science (10)
- Computer Science (10)
- Ecology (10)
- Engineering (10)
- Glaciochemistry (10)
- Nebraska (10)
- Publication
-
- Theses and Dissertations (75)
- Journal of Electrochemistry (67)
- Turkish Journal of Chemistry (62)
- Turkish Journal of Mathematics (62)
- Department of Computer Science Technical Reports (52)
-
- Faculty Publications (46)
- Nebraska Tractor Tests (41)
- All Computer Science and Engineering Research (38)
- Physics Faculty Publications (38)
- Journal of the Iowa Academy of Science: JIAS (37)
- Dissertations, Theses, and Masters Projects (36)
- Eighth Eastern Wildlife Damage Management Conference (1997) (36)
- Great Plains Wildlife Damage Control Workshop Proceedings (33)
- Research Collection School Of Computing and Information Systems (33)
- Wildlife Damage Management Conference (32)
- Dissertations (31)
- Humanistic Mathematics Network Journal (30)
- Masters Theses (29)
- Theses (27)
- Honors Theses (26)
- Faculty of Informatics - Papers (Archive) (25)
- Dams: Water and Power in the New West (Summer Conference, June 2-4) (24)
- Dartmouth Scholarship (24)
- RISK: Health, Safety & Environment (1990-2002) (24)
- Conference on Applied Statistics in Agriculture (21)
- Physics Faculty Research & Creative Works (20)
- Reports (19)
- Computer Science Technical Reports (18)
- Space Science Center (18)
- All Physics Faculty Publications (17)
- Publication Type
- File Type
Articles 901 - 930 of 2472
Full-Text Articles in Physical Sciences and Mathematics
Putting The Pieces Together: Understanding Robinson’S Nonperiodic Tilings, Aimee S. A. Johnson, K. M. Madden
Putting The Pieces Together: Understanding Robinson’S Nonperiodic Tilings, Aimee S. A. Johnson, K. M. Madden
Mathematics & Statistics Faculty Works
A discussion of Robinson's nonperiodic tilings and nonperiodic tilings with nonsquare tiles (Penrose and pinwheel).
Pliocene Paleoenvironment And Antarctic Ice Sheet Behavior: Evidence From Wright Valley, Brenda L. Hall, George H. Denton, Daniel R. Lux, Christian Schlüchter
Pliocene Paleoenvironment And Antarctic Ice Sheet Behavior: Evidence From Wright Valley, Brenda L. Hall, George H. Denton, Daniel R. Lux, Christian Schlüchter
Earth Science Faculty Scholarship
Investigations in Wright Valley, adjacent to the Transantarctic Mountains in East Antarctica, shed light on the question of whether high-latitude Pliocene climate was warm enough to cause widespread deglaciation of the East Antarctic craton with a concurrent Magellanic moorland-like environment. If Pliocene age diatoms, presently in glaciogenic deposits high in the Transantarctic Mountains, had come from seaways on the East Antarctic craton, an expanding Late Pliocene ice sheet must have first eroded them from marine sediments and then deposited the diatoms at their present high-altitude locations. This hypothetical expanding glacier would have had to have come through Wright Valley. Glacial …
Quantitative Analysis Of Microbial Growth In Selected Meats Before And After Spoilage Due To Change In Temperature, Richelle Beverly
Quantitative Analysis Of Microbial Growth In Selected Meats Before And After Spoilage Due To Change In Temperature, Richelle Beverly
Electronic Dissertations and Theses
Upton Sinclair wrote The Jungle over ninety years ago. This book exposed the failures of the United States meat packing industry which led to major modernization of the meat safety system. The beef and poultry industry make up about 66 percent of the total meat eaten by Americans. Due to many illnesses and deaths in recent years, the United States Department of Agriculture is announcing new measures to reduce harmful bacteria levels in products. Quality control and safety measures to protect consumers have been put in place by I • I the Food and Drug Administration. Consumers are warned of …
Optimization And Spectrophotometric Comparisons Of Radiochromic Dye (2,3,5-Triphenyl-2-H-Tetrazolium Chloride) In Gelatin And Agar Models: Gamma And Electron Beam Irradiations, Lakindra P. Frances
Optimization And Spectrophotometric Comparisons Of Radiochromic Dye (2,3,5-Triphenyl-2-H-Tetrazolium Chloride) In Gelatin And Agar Models: Gamma And Electron Beam Irradiations, Lakindra P. Frances
Electronic Dissertations and Theses
After irradiation, the colorless radiochromic dye, 2,3,5-triphenyl-2H-tetrazolium chloride (TTC), changes to red triphenyl formazan pigment, and the distribution of absorbed dose in the tissue-equivalent gelatin and agar media can be studied. Using solutions 8% by weight gelatin and 8% by weight agar, both with 3 mM citric acid as buffer and 4 mM concentration of dye, the radiation-induced absorbency of a sample slowly decreased with increasing wavelength. In the gel, TTC is very light sensitive, and 7 days after irradiation, becomes less stable. The samples were irradicated by gamma and electron beam. Nine different doses were used for the 60 …
Impact Of The Adoption Of New Technology (Facnet) On A Minority-Owned Small Business In Colorado, Tamara L. James
Impact Of The Adoption Of New Technology (Facnet) On A Minority-Owned Small Business In Colorado, Tamara L. James
McCabe Thesis Collection
FACNET is a computer network that moves Electronic Data Interchange (EDI) from the Department of Defense (DoD) and federal buying sites to and from the certified Value Added Network (VAN).
This study is conducted to answer the following questions about the use FACNET by XYZ Communications:
1) Has FACNET helped reduce the cost of paper used in the business?
2) Has FACNET helped reduce the cost of long distance calls (telephone and fax) in the business?
3) Has FACNET helped reduce the cost of traveling expenses (hotel and transportation) in the business?
4)Has FACNET helped the business to conduct in …
The Link Between Scrambling Numbers And Derangements, Barry Balof, Eric Farmer, Jamie Kawabata
The Link Between Scrambling Numbers And Derangements, Barry Balof, Eric Farmer, Jamie Kawabata
Mathematical Sciences Technical Reports (MSTR)
The group equation abcdef = dabecf can be reduced to the equation xcde = dxec. In general, we are interested in how many variables are needed to represent group equations in which the right side is a permutation of the variables on the left side. Scrambling numbers capture this information about a permutation. In this paper we present several facts about scrambling numbers, and expose a striking relationship between permutations that cannot be reduced and derangements.
Bioremediation Of Creosote Contaminated Soils In An Old Wood Preserving Facility, Claudia Rush
Bioremediation Of Creosote Contaminated Soils In An Old Wood Preserving Facility, Claudia Rush
Honors Theses
No abstract provided.
Predicting Modes Of Toxic Action From Chemical Structure: Acute Toxicity In The Fathead Minnow (Pimephales Promelas), Steven P. Bradbury, Christine L. Russom, Steven J. Broderius, Dean E. Hammermeister, Robert A. Drummond
Predicting Modes Of Toxic Action From Chemical Structure: Acute Toxicity In The Fathead Minnow (Pimephales Promelas), Steven P. Bradbury, Christine L. Russom, Steven J. Broderius, Dean E. Hammermeister, Robert A. Drummond
Steven P. Bradbury
In the field of aquatic toxicology, quantitative structure-activity relationships (QSARs) have developed as scientifically credible models for predicting the toxicity of chemicals when little or no empirical data are available. In recent years, there has been an evolution of QSAR development and application from that of a chemical-class perspective to one that is more consistent with assumptions regarding modes of toxic action. The objective of this research was to develop procedures that relate modes of acute toxic action in the fathead minnow (Pimephales promelas) to chemical structures and properties. An empirically derived database for diverse chemical structures of acute toxicity …
Experimental And Theoretical Investigations Of Order-Disorder In Cu2almn, Duane D. Johnson, M. Asta, J. J. Hoyt, B. C. Chakoumakos, S. T. Misture, J. D. Althoff, R. Mccormack
Experimental And Theoretical Investigations Of Order-Disorder In Cu2almn, Duane D. Johnson, M. Asta, J. J. Hoyt, B. C. Chakoumakos, S. T. Misture, J. D. Althoff, R. Mccormack
Duane D. Johnson
A combination of X-ray and neutron powder diffraction has been used to measure the two long range order parameters vs. temperature below the disorder-B2 transition in the ternary alloy Cu2 AlMn. The results indicate that at temperatures just below the critical point the Al + Mn sublattice is enriched in Al. First-principles calculations based on only the atomic numbers of Cu, Mn and Al support the experimentally-observed preference of Al for the Al + Mn sublattice, and reveal the interplay between the constituent binary systems that gives rise to this behavior.
41. Akio Nakajima, 1921-1997, Otto Vogl, Toshio Hayashi
41. Akio Nakajima, 1921-1997, Otto Vogl, Toshio Hayashi
Otto Vogl
No abstract provided.
Σary, Moorhead State University, Mathematics Department
Σary, Moorhead State University, Mathematics Department
Math Department Newsletters
No abstract provided.
Was Newton's Calculus A Dead End? The Continental Influence Of Maclaurin's Treatise Of Fluxions, Judith V. Grabiner
Was Newton's Calculus A Dead End? The Continental Influence Of Maclaurin's Treatise Of Fluxions, Judith V. Grabiner
Pitzer Faculty Publications and Research
We will show that Maclaurin's Treatise of Fluxions did develop important ideas and techniques and that it did influence the mainstream of mathematics. The Newtonian tradition in calculus did not come to an end in Maclaurin's Britain. Instead, Maclaurin's Treatise served to transmit Newtonian ideas in calculus, improved and expanded, to the Continent. We will look at what these ideas were, what Maclaurin did with them, and what happened to this work afterwards. Then, we will ask what by then should be an interesting question: why has Maclaurin's role been so consistently underrated? Thse questions will involve general matters of …
Fragment Distributions For Highly Charged Systems, C. Williams, W. G. Lynch, C. Schwarz, M. B. Tsang, W. C. Hsi, M. J. Huang, D. R. Bowman, J. Dinius, C. K. Gelbke, D. O. Handzy, G. J. Kunde, M. A. Lisa, Graham F. Peaslee, L. Phair, A. Botvina, M-C. Lemaire, S. R. Souza, G. Van Buren, R. J. Charity, L. G. Sobotka, U. Lynen, J. Pochodzalla, H. Sann, W. Trautmann, D. Fox, R. T. De Souza, N. Carlin
Fragment Distributions For Highly Charged Systems, C. Williams, W. G. Lynch, C. Schwarz, M. B. Tsang, W. C. Hsi, M. J. Huang, D. R. Bowman, J. Dinius, C. K. Gelbke, D. O. Handzy, G. J. Kunde, M. A. Lisa, Graham F. Peaslee, L. Phair, A. Botvina, M-C. Lemaire, S. R. Souza, G. Van Buren, R. J. Charity, L. G. Sobotka, U. Lynen, J. Pochodzalla, H. Sann, W. Trautmann, D. Fox, R. T. De Souza, N. Carlin
Faculty Publications
Charge and transverse energy distributions for intermediate mass fragments have been extracted for central 84Kr+197Au collisions at E/A=35-400 MeV. The slopes of the measured fragment charge distributions decrease monotonically with incident energy, consistent with the expectations for highly charged systems, but not with recent critical exponent analyses. Statistical model calculations, which reproduce the experimental trends, suggest that post-breakup fragment secondary decays alter significantly the observed charge distributions. Radial expansion velocities extracted from these calculations follow the systematics of Au+Au collisions.
The Canadian Cooperative Wildlife Health Centre And Surveillance Of Wild Animal Diseases In Canada, Volume 38, May 1997, Frederick A. Leighton, Gary A. Wobeser, Ian K. Barker, Pierre-Yves Daoust, Daniel Martineau
The Canadian Cooperative Wildlife Health Centre And Surveillance Of Wild Animal Diseases In Canada, Volume 38, May 1997, Frederick A. Leighton, Gary A. Wobeser, Ian K. Barker, Pierre-Yves Daoust, Daniel Martineau
Canadian Cooperative Wildlife Health Centre: Newsletters and Publications
The Canadian Cooperative Wildlife Health Centre (CCWHC) was established in 1992 as an organization among Canada's 4 veterinary colleges, with a mandate to apply veterinary medicine to wildlife management and conservation in Canada. A major function of the CCWHC is nation-wide surveillance of wild animal diseases. Disease surveillance is conceived as consisting of 4 different activities: detection, diagnosis, information management, and use of information. In the CCWHC surveillance program, detection of disease is carried out by a wide range of professional and avocational field personnel, and much effort is expended to stimulate and support this activity. Diagnosis is done by …
The Probe, Issue 176 - May 1997
The Probe, Issue 176 - May 1997
The Probe: Newsletter of the National Animal Damage Control Association
Contents: Consensus, Coalition and Consent-Antidote to Conflict Calendar of Upcoming Events NADCA Committees Overturning Sunday Hunting Bans Who Funds Anti-Hunting Measures? NH Defeats Anti-Trap Bill Extreme Bill Introduced in California New Rules Proposed for Canada Geese Taking the Lead: A Report on Connecticut's NWCO Association Seminar Louisiana Nutria Headed for Russia Activist Files Suit Against ADC Coyotes Prey on Suburban Colorado Dogs PETA Asks Fishing Ban An Open Letter to NADCA Ultrasound Not Effective for Bird Control More Abstracts Published at the 3rd Annual Conference of the Wildlife Society Range expansion and ecology of the eastern coyote Wolf-livestock conflict resolution …
Whole Earth Telescope Observations Of The Helium Interacting Binary Pg 1346+082 (Cr Bootis), Judith L. Provencal, Donald E. Winget, R. Edward Nather, Edward L. Robinson, J. Christopher Clemens, Paul A. Bradley, Charles F. Claver, Scot J. Kleinman, Albert D. Grauer, Butler P. Hine, Lilia Ferrario, Darragh O'Donoghue, Brian Warner, Gerard Vauclair, Michel Chevreton, Kepler De Souza Oliveira Filho, Matt A. Wood, Gregory W. Henry
Whole Earth Telescope Observations Of The Helium Interacting Binary Pg 1346+082 (Cr Bootis), Judith L. Provencal, Donald E. Winget, R. Edward Nather, Edward L. Robinson, J. Christopher Clemens, Paul A. Bradley, Charles F. Claver, Scot J. Kleinman, Albert D. Grauer, Butler P. Hine, Lilia Ferrario, Darragh O'Donoghue, Brian Warner, Gerard Vauclair, Michel Chevreton, Kepler De Souza Oliveira Filho, Matt A. Wood, Gregory W. Henry
Information Systems and Engineering Management Research Publications
We present our analysis of 240 hr of white-light, high-speed photometry of the dwarf nova-like helium variable PG 1346+082 (CR Boo). We identify two frequencies in the low-state power spectrum, at 679.670 ± 0.004 μHz and 669.887 ± 0.008 μHz. The 679.670 μHz variation is coherent over at least a 2 week time span, the first demonstration of a phase-coherent photometric variation in any dwarf nova-like interacting binary white dwarf system. The high-state power spectrum contains a complex fundamental with a frequency similar, but not identical, to the low-state spectrum, and a series of harmonics not detected in low state. …
Time-Series Photometric Spot Modeling. Iii. Thirty Years In The Life Of Hk Lacertae., Katalin Oláh, Zsolt Kővári, János Bartus, Klaus G. Strassmeier, Douglas S. Hall, Gregory W. Henry
Time-Series Photometric Spot Modeling. Iii. Thirty Years In The Life Of Hk Lacertae., Katalin Oláh, Zsolt Kővári, János Bartus, Klaus G. Strassmeier, Douglas S. Hall, Gregory W. Henry
Information Systems and Engineering Management Research Publications
We present a spot modeling analysis of the active late-type giant HK Lac using 30 years of photometry, including 600 new data points from the last six years. We have analyzed folded light curves and, when we had long continuous data sets, applied a new computer code for time-series modeling. The validity of the modeling results was tested as a function of the photometric noise. We have determined the unspotted brightness of HK Lac in the BV(RI)_C_ bandpasses and obtained a spot temperature of {DELTA}T=1200+/-100K. Polar active regions were recovered throughout the modeling because no other scenario was able to …
Rotational Velocities Of Late-Type Stars, Francis C. Fekel
Rotational Velocities Of Late-Type Stars, Francis C. Fekel
Information Systems and Engineering Management Research Publications
A calibration based on the results of Gray has been used to determine projected rotational velocities for 133 bright stars with spectral types of F, G, or K, most of which appear in {The Bright Star Catalogue}. The vast majority have {v} sin {i} ≤q 10 km s-1 and, thus, are slow rotators. With the new calibration, projected rotational velocities have been determined for a sample of 111 late-type stars, most of which are chromospherically active. Some of the stars have had their rotational velocities measured for the first time.
Terminal Emulation System, Chun-Fu Lee
Terminal Emulation System, Chun-Fu Lee
All Graduate Plan B and other Reports, Spring 1920 to Spring 2023
Terminal emulation is a personal computer application software which emulates the terminal's behavior to communicate with the mainframe/host computer. It can show the terminal screen on a personal computer screen and make the mainframe/host computer interact with it as it would with a real terminal without any distinction.
Personal computers are increasingly more powerful and efficient today. Their mobility, compatibility, flexibility, and extendibility are definitely superior to the 'dumb' traditional terminals. Terminal emulation is therefore devised to take advantage of these personal computers' redemptions to offset the traditional terminal's drawbacks and inconveniences.
A terminal emulation is actually a very complex …
Parametric Kinematic Tolerance Analysis Of General Planar Systems, Elisha Sacks, Leo Joskowicz
Parametric Kinematic Tolerance Analysis Of General Planar Systems, Elisha Sacks, Leo Joskowicz
Department of Computer Science Technical Reports
No abstract provided.
Solving Composite Problems With Interface Relaxation, Mo Mu, John R. Rice
Solving Composite Problems With Interface Relaxation, Mo Mu, John R. Rice
Department of Computer Science Technical Reports
No abstract provided.
Parallel Ellpack 3-D Problem Solving Environment, Vassilios Verykios, Elias N. Houstis
Parallel Ellpack 3-D Problem Solving Environment, Vassilios Verykios, Elias N. Houstis
Department of Computer Science Technical Reports
No abstract provided.
Timestamp Based Approach For The Detection And Resolution Of Mutual Conflicts In Real-Time Distributed Systems, Sanjay Kumar Madria
Timestamp Based Approach For The Detection And Resolution Of Mutual Conflicts In Real-Time Distributed Systems, Sanjay Kumar Madria
Department of Computer Science Technical Reports
No abstract provided.
234Th And 210Pb Evidence For Rapid Ingestion Of Settling Particles By Mobile Epibenthic Megafauna In The Abyssal Ne Pacific, L. M. L. Lauerman, J. M. Smoak, Timothy J. Shaw, W. S. Moore, K. L. Smith Jr.
234Th And 210Pb Evidence For Rapid Ingestion Of Settling Particles By Mobile Epibenthic Megafauna In The Abyssal Ne Pacific, L. M. L. Lauerman, J. M. Smoak, Timothy J. Shaw, W. S. Moore, K. L. Smith Jr.
Faculty Publications
No abstract provided.
Average Steady Nonuniform Flow In Stratified Formations, Peter Indelman, Vitaly A. Zlotnik
Average Steady Nonuniform Flow In Stratified Formations, Peter Indelman, Vitaly A. Zlotnik
Department of Earth and Atmospheric Sciences: Faculty Publications
A mathematical model of average nonuniform flow in heterogeneous stratified media is developed. The averaged Darcy's law is obtained by deriving the analytical expression of the effective conductivity tensor for media with small heterogeneities. The fundamental solution of the average flow equation (mean Green function) corresponding to the flow toward a single point source of deterministic discharge is derived. The mean head distribution is calculated for a fully penetrating well, for a finite length well in an infinite domain, and for a dipole well. The concept of equivalent conductivity is defined for use in identifying the formation conductivity properties. The …
A Study Of Combustion Profiles Of Co-Fired Coal/Biomass/Limestone Samples In A Fluidized Bed Combustor, Beverly Campbell
A Study Of Combustion Profiles Of Co-Fired Coal/Biomass/Limestone Samples In A Fluidized Bed Combustor, Beverly Campbell
Masters Theses & Specialist Projects
Concerns over declining landfill space and a renewed interest in waste-toenergy technologies have increased the possibilities of co-firing different types of fuels in atmospheric fluidized bed combustion systems. The laboratory sized atmospheric fluidized bed combustor (AFBC) at Western Kentucky University was designed to serve as a highly flexible research and development facility to gain operating experience, evaluate combustion performance, and estimate the effect of flue gas emissions on the atmosphere. The operating conditions for the AFBC system are similar to those used at the TVA 160-MW AFBC Pilot Plant located near Paducah, Kentucky. AFBC systems are ideal for co-firing because …
Mass Balance Of Major, Minor And Trace Elements During Afbc Combustion Of Fuels, Qianwen Cao
Mass Balance Of Major, Minor And Trace Elements During Afbc Combustion Of Fuels, Qianwen Cao
Masters Theses & Specialist Projects
The proposed ASTM procedures for the determination of 13 major and minor., and 11 trace elements, in solid coal and coke combustion residues by inductively coupled plasma-atomic emission spectrometry (ICP-AES) were checked for routine use. In this study, the ICP analysis values and XRF analysis values of major and minor elements in two kinds of coal and two kinds of limestone were compared. It was shown that over 95% closure of the mass balances of the 24 major, minor, and trace elements was obtained with the proposed ASTM procedure. Also, it was demonstrated that trace elements may be lost through …
In Situ Observations Of Air Traffic Emission Signatures In The North Atlantic Flight Corridor, Hans Schlager, Paul Konopka, P. Schulte, U. Schumann, H. Ziereis, F. Arnold, M. Klemm, Donald E. Hagen, Philip D. Whitefield, J. Ovarlez
In Situ Observations Of Air Traffic Emission Signatures In The North Atlantic Flight Corridor, Hans Schlager, Paul Konopka, P. Schulte, U. Schumann, H. Ziereis, F. Arnold, M. Klemm, Donald E. Hagen, Philip D. Whitefield, J. Ovarlez
Physics Faculty Research & Creative Works
Focussed aircraft measurements have been carried out over the eastern North Atlantic to search for signals of air traffic emissions in the flight corridor region. Observations include NO, NO2, HNO3, SO2, O3, H2O, total condensation nuclei (CN), and meteorological parameters. A flight pattern with constant-altitude north-south legs across the major North Atlantic air traffic tracks was flown. Signatures of air traffic emissions were clearly detected for NOx, SO2, and CN with peak concentrations of 2 ppbv, 0.25 ppbv, and 500 cm-3, respectively, exceeding background …
Steps Toward Determination Of The Size And Structure Of The Broad-Line Region In Active Galactic Nuclei. Ix. Ultraviolet Observations Of Fairall, P.M. Rodriguez-Pascual, D. Allion, J. Clavel, D. Michael Crenshaw, K. Horne, Gerard A. Kriss, Julian Henry Krolik, Matthew A. Malkan, Hagai Netzer, Paul T. O'Brien, Bradley M. Peterson, G.A. Reichert, W. Wamsteker, T. Alexander, P. Barr, R.D. Blandford, J.N. Bergman, T.E. Carone, S. Clements, T.-J. Courvoisier, M.M. De Robertis, M. Dietrich, H. Dottori, R.A. Edelson, A. V. Filippenko, C. Martin Gaskell, J. P. Huchra, J.B. Hutchings, W. Kollatschny, A.P. Koratkar, Kirk T. Korista, Ari Laor, G.M. Macalpine, P. G. Martin, D. Maoz, B. Mccollum, S.L. Morris, G.C. Perola, Richard William Pogge, R.L. Ptak, M.C. Recondo-Gonzalez, J.M. Rodriguez-Espinoza, E.L. Rokaki, M. Santos-Lleo, K. Sekiguchi, J.M. Schull, M.A.J. Snuders, L.S. Sparke, G.M. Stirpe, R.E. Stoner, W.-H. Sun, S.J. Wagner, I. Wanders, Belinda J. Wilkes, C. Winge, W. Zheng
Steps Toward Determination Of The Size And Structure Of The Broad-Line Region In Active Galactic Nuclei. Ix. Ultraviolet Observations Of Fairall, P.M. Rodriguez-Pascual, D. Allion, J. Clavel, D. Michael Crenshaw, K. Horne, Gerard A. Kriss, Julian Henry Krolik, Matthew A. Malkan, Hagai Netzer, Paul T. O'Brien, Bradley M. Peterson, G.A. Reichert, W. Wamsteker, T. Alexander, P. Barr, R.D. Blandford, J.N. Bergman, T.E. Carone, S. Clements, T.-J. Courvoisier, M.M. De Robertis, M. Dietrich, H. Dottori, R.A. Edelson, A. V. Filippenko, C. Martin Gaskell, J. P. Huchra, J.B. Hutchings, W. Kollatschny, A.P. Koratkar, Kirk T. Korista, Ari Laor, G.M. Macalpine, P. G. Martin, D. Maoz, B. Mccollum, S.L. Morris, G.C. Perola, Richard William Pogge, R.L. Ptak, M.C. Recondo-Gonzalez, J.M. Rodriguez-Espinoza, E.L. Rokaki, M. Santos-Lleo, K. Sekiguchi, J.M. Schull, M.A.J. Snuders, L.S. Sparke, G.M. Stirpe, R.E. Stoner, W.-H. Sun, S.J. Wagner, I. Wanders, Belinda J. Wilkes, C. Winge, W. Zheng
C. Martin Gaskell Publications
No abstract provided.
Nickel Doping Of Boron–Carbon Alloy Films And Corresponding Fermi Level Shifts, Seong-Don Hwang, N. Remmes, Peter A. Dowben, D.N. Mcilroy
Nickel Doping Of Boron–Carbon Alloy Films And Corresponding Fermi Level Shifts, Seong-Don Hwang, N. Remmes, Peter A. Dowben, D.N. Mcilroy
Peter Dowben Publications
We have grown nickel doped boron–carbon alloy films by the technique of plasma enhanced chemical vapor deposition. The source gas closo-1,2-dicarbadodecaborane (orthocarborane) was used to grow the boron–carbon alloy, while nickelocene [Ni)C5H5)2] was used as the dopant source for nickel. With sufficient levels of Ni doping, diodes with characteristic tunnel diode behavior can be fabricated. The doping of nickel transformed a B5C p-type material, relative to lightly doped n-type silicon, to a strongly n-type material. In order to gain insight into the shift of the Fermi level of the …