Physical Sciences and Mathematics Commons^™

Multiwavelength Observations Of A Tev-Flare From W Comae, P. T. Reynolds, Veritas, Agile

Physical Sciences Publications

No abstract provided.

Crystal Structure Of Mtan, A Global Multidrug Transporter Gene Activator, Michael H. Godsey, Natalya N. Baranova, Alexander A. Neyfakh, Richard G. Brennan

CUP Faculty Research

MtaN (Multidrug Transporter Activation, N terminus) is a constitutive, transcriptionally active 109-residue truncation mutant, which contains only the N-terminal DNA-binding and dimerization domains of MerR family member Mta. The 2.75 Å resolution crystal structure of apo-MtaN reveals a winged helix-turn-helix protein with a protruding 8-turn helix (α5) that is involved in dimerization by the formation of an antiparallel coiled-coil. The hydrophobic core and helices α1 through α4 are structurally homologous to MerR family member BmrR bound to DNA, whereas one wing (Wing 1) is shifted. Differences between the orientation of α5 with respect to the core and the revolution of …

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 18, Number 2, October 2001, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

An eight page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

Hot Carbon Densities In The Exosphere Of Mars, Andrew F. Nagy, Michael W. Liemohn, Jane L. Fox, Jhoon Kim

Physics Faculty Publications

Theoretical results of hot carbon densities in the exosphere of Mars are presented. The calculation is a two-step process: First a two-stream transport code is used to solve for the distribution function at the exobase, and then these results are used in a Liouville equation solution above the exobase. It is found that photodissociation of carbon monoxide is the largest source of hot carbon atoms in the upper atmosphere of Mars, larger than dissociative recombination of CO⁺ and much larger than the creation of hot carbon through collisions with hot oxygen atoms. It is also found that the high …

Photochemical Escape Of Atomic Carbon From Mars, Jane L. Fox, F. M. Bakalian

Physics Faculty Publications

We have modeled the escape fluxes of atomic carbon from the Martian atmosphere for low and high solar activities due to various photochemical escape mechanisms, including photodissociation of CO, dissociative recombination of CO⁺, electron impact dissociation and dissociative ionization of CO, photodissociative ionization of CO, and dissociative charge transfer of O⁺⁺ to CO. Only photodissociation of CO and dissociative recombination of CO⁺ are found to be important, and the time-averaged escape flux is predicted to be controlled by the high solar activity values. The computed global average escape fluxes of C due to photodissociation of CO …

Solar Activity Variations Of The Venus Thermosphere/Ionosphere, Jane L. Fox, K. Y. Sung

Physics Faculty Publications

We present models of the low and high solar activity thermospheres and ionospheres of Venus for a background atmosphere based largely on the VTS3 model of Hedin et al. [1983]. Our background model consists of 12 neutral species, and we compute the density profiles of 13 ions and 7 minor neutrals. We find that the peak production rates of some ions, such as CO₂⁺ and N₂⁺, vary approximately as the solar flux and that some, whose parent neutrals are photochemically produced, such as O⁺, N⁺, and C⁺, show variations …

สัมภาษณ์ : พลตรีสืบพงษ์ สังขะรมย์ ผู้อำนวยการสถาบันวิจัยวิทยาศาสตร์การแพทย์ทหาร กรมแพทย์ทหารบก : สงครามอาวุธเคมี-ชีวภาพ, กรชนก รักษาเสรี

Thai Environment

No abstract provided.

Observations Of Persistent Leonid Meteor Trails 2. Photometry And Numerical Modeling, C. A. Kruschwitz, M. C. Kelley, C. S. Gardner, G. Swenson, A. Z. Liu, X. Chu, J. D. Drummond, B. W. Grime, W. T. Armstrong, J. M. C. Plane, P. Jenniskens

Physical Sciences - Daytona Beach

During the 1998 Leonid meteor shower, multi-instrument observations of persistent meteor trains were made from the Starfire Optical Range on Kirtland Air Force Base, New Mexico, and from a secondary site in nearby Placitas, New Mexico. The University of Illinois Na resonance lidar measured the Na density and temperature in the trains, while various cameras captured images and videos of the trains, some of which were observed to persist for more than 30 min. The Na density measurements allow the contribution of Na airglow to the observed train luminescence to be quantified for the first time. To do this, persistent …

Inside Unlv, Andy Grossman, Mark Wallington, Dave Phillips

Inside UNLV

No abstract provided.

Unlv Magazine, Barbara Cloud, Laurie Fruth, Mae Worthey-Flennoy

UNLV Magazine

No abstract provided.

Eerc Program Areas, University Of North Dakota. Energy And Environmental Research Center

EERC Brochures and Fact Sheets

Brochure on the Energy & Environmental Research Center's (EERC's) program areas. Program areas include alternative and renewable fuels, pollution prevention, environmental cleanup, water management, waste utilization, and power systems. [This item is an outdated or superseded version and retained for historical purposes only. It may no longer reflect current information, policies, or practices.]

Modeling Irda Performance: The Effect Of Irlap Negotiation Parameters On Throughput, Scott V. Hansen, Charles D. Knutson, Michael G. Robertson, Franklin E. Sorenson

Faculty Publications

The Infrared Data Association's (IrDA) infrared data transmission protocol is a widely used mechanism for short-range wireless data communications. In order to provide flexibility for connections between devices of potentially disparate capabilities, IrDA devices negotiate the values of several transmission parameters based on the capabilities of the devices establishing the connection. This paper describes the design and implementation of a software tool, Irdaperf, to model IrDA performance based on negotiated transmission parameters. Using Irdaperf, we demonstrate that for fast data rates, maximizing window size and data size are key factors for overcoming the negative effects of a relatively long link …

Double Diffraction Dissociation At The Fermilab Tevatron Collider, T. Affolder, Kenneth A. Bloom, Collider Detector At Fermilab Collaboration

Kenneth Bloom Publications

We present results from a measurement of double diffraction dissociation in p̅p collisions at the Fermilab Tevatron collider. The production cross section for events with a central pseudorapidity gap of width Δη⁰ > 3 (overlapping η=0) is found to be 4.43±0.02(stat) ± 1.18(syst) mb [3.42 ± 0.01(stat) ± 1.09(syst) mb] at √s=1800[630] GeV. Our results are compared with previous measurements and with predictions based on Regge theory and factorization.

Observation Of Orbitally Excited B Mesons In Pp̅ Collisions At √S =1.8  Tev, T. Affolder, Kenneth A. Bloom, Collider Detector At Fermilab Collaboration

Kenneth Bloom Publications

We measure the relative rate of production of orbitally excited (L=1) states of B mesons (B**) by observing their decays into B π ^±. We reconstruct B mesons through semileptonic decay channels using data collected in pp̅ collisions at √s =1.8 TeV. The fraction of light B mesons that are produced as L=1B** states is measured to be 0.28±0.06(stat) ±0.03(syst). We also measure the collective mass of the B** states, and quantify the result by quoting the (model-dependent) mass of the lowest B** state to be m (B₁)=5.71 ±0.02 GeV/ …

Intermediate Rings Between A Local Domain And Its Completion, Ii, William Heinzer, Christel Rotthaus, Sylvia Wiegand

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

We present results connecting flatness of extension rings to the Noetherian property for certain intermediate rings between an excellent normal local domain and its completion. We consider conditions for these rings to have Cohen-Macaulay formal fibers. We also present several examples illustrating these results.

Water Current, Volume 33, No. 5. October 2001

Water Current Newsletter

• Research Indicates Sprinkler Irrigation Use Could Reduce Groundwater Nitrate Levels by Steve Ress

• From the Director

• Meet the Faculty

• Time for Change on the Missouri River by Chad Smith

• Four States Irrigation Council Tour Visits Western Kansas in July by Steve Ress

• Pumpkin Creek Surface-Ground Water Dispute by J. David Aiken

• Water Issues in 2001 by Tim Anderson

• Water News Briefs

Modeling And Simulation Of Steady State And Transient Behaviors For Emergent Socs, Joann M. Paul, Arne Suppe, Donald E. Thomas

Research Collection School Of Computing and Information Systems

We introduce a formal basis for viewing computer systems as mixed steady state and non-steady state (transient) behaviors to motivate novel design strategies resulting from simultaneous consideration of function, scheduling and architecture. We relate three design styles: Hierarchical decomposition, static mapping and directed platform that have traditionally been separate. By considering them together, we reason that once a steady state system is mapped to an architecture, the unused processing and communication power may be viewed as a platform for a transient system, ultimately resulting in more effective design approaches that ease the static mapping problem while still allowing for effective …

Dynamical Theory For Modeling Dipole-Dipole Interactions In A Microcavity: The Green Dyadic Approach, P.T. Leung, R. L. Hartman

Physics Faculty Publications and Presentations

A dynamical theory for modeling the dipole-dipole interaction in a microcavity is formulated using the Green dyadic approach. To our knowledge, this theory is one of the most general in many aspects of modeling the phenomenon. It accommodates an arbitrary number of layers adjacent to the cavity, constant but arbitrary dielectric properties within each layer, inclusion of retardation effects, arbitrary dipole orientations, and an unlimited number of interacting dipoles. Numerical results for the emission properties of interacting molecular dipoles in a microcavity are presented to illustrate the capability of the method.

Student Fact Book, Fall 2001, Twenty-Fifth Annual Edition, Wright State University, Office Of Student Information Systems, Wright State University

Wright State University Student Fact Books

The student fact book has general demographic information on all students enrolled at Wright State University for Fall Quarter, 2001.

Student Fact Book, Fall 2001, Wright State University Lake Campus, Office Of Student Information Systems, Wright State University

Wright State University Student Fact Books

The student fact book has general demographic information on all students enrolled at Wright State University Lake Campus for Fall Quarter, 2001.

Reifying Communication At The Application Level, Andrew P. Black, Jie Huang, Jonathan Walpole

Computer Science Faculty Publications and Presentations

Middleware, from the earliest RPC systems to recent Object-Oriented Remote Message Sending (RMS) systems such as Java RMI and CORBA, claims transparency as one of its main attributes. Coulouris et al. define transparency as “the concealment from the … application programmer of the separation of components in a distributed system.” They go on to identify eight different kinds of transparency.

We considered titling this paper “Transparency Considered Harmful”, but that title is misleading because it implies that all kinds of transparency are bad. This is not our view. Rather, we believe that the choice of which transparencies should be offered …

การคุ้มครองสิทธิผู้บริโภค, วินัย ดะห์ลัน

Thai Environment

No abstract provided.

ก่ารจัดการอุบัติภัยจากสารเคมี : กรณีศึกษารถบรรทุก Acrylonitrile พลิกคว่ำ, สุชาดา ชินะจิตร

Thai Environment

No abstract provided.

โครงการรางวัลนวัตกรรมแห่งประเทศไทย, ขนิษฐา มารุ่งเรือง

Thai Environment

No abstract provided.

คู่มือการดำเนินชีวิตสำหรับประชาชน ปี 2541 และทฤษฎีใหม่ พระราชดำรัส พระราชทานเมื่อ วันที่ 4 ธันวาคม 2540

Thai Environment

No abstract provided.

การแพร่กระจายของแก๊สเพอร์ฟลูออโรคาร์บอน (Pfcs)...แก๊สเรือนกระจกที่ไม่รู้จัก, เบญจลักษณ์ กาญจนเศรษฐ์

Thai Environment

No abstract provided.

การเฝ้าระวังคุณภาพน้ำเบื้องต้นโดยใช้การงอกของเมล็ดพืช, วรางคณา วิเศษมณี ลี

Thai Environment

No abstract provided.

เสวนาวิชาการ : เรื่อง "น้ำท่วม ภัยแล้ง แผ่นดินไหว: ภัยที่คนไทยควรรู้เพื่อเตรียมรับมือ", สถาบันวิจัยสภาวะแวดล้อม, จุฬาลงกรณ์มหาวิทยาลัย

Thai Environment

No abstract provided.

Earth News, V25, Fall 2001, Department Of Earth Science, University Of Northern Iowa.

Earth News

Inside this issue:

--- News from the Department Head
--- Earth Science Staff Activities
--- Earth Science Majors
--- 2001 Earth Science Graduates
--- Student Research Presentations
--- Student Internships
--- STORM: Science center for Teaching, Outreach, and Research on Meteorology
--- Studies in the Geology of Iowa for Teachers
--- Earth Science Student Assistants
--- Sigma Gamma Epsilon - Gamma Sigma Chapter
--- Gifts to the Department of Earth Science
--- 2001-2002 Scholarship and Award Recipients
--- 2001 Spring Trip Summary
--- Earth Science Seminar Series
--- Rapa Nui Expedition - March 2000
--- Alumni Profile - Larry J. …

บรรณาธิการแถลง

Thai Environment

No abstract provided.