Physical Sciences and Mathematics Commons^™

Thomas Mayo Brewer, John A. Drobnicki

Publications and Research

Thomas Mayo Brewer was an ornithologist, oologist, and publisher whose work was concerned with eggshells as well as the breeding habits, life histories, and geographical distribution of birds.

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Matching Numerical Simulations To Continuum Field Theories: A Lattice Renormalization Study, J Borrill, M. Gleiser

Dartmouth Scholarship

The study of nonlinear phenomena in systems with many degrees of freedom often relies on complex numerical simulations. In trying to model realistic situations, these systems may be coupled to an external environment which drives their dynamics. For nonlinear field theories coupled to thermal (or quantum) baths, discrete lattice formulations must be dealt with extreme care if the results of the simulations are to be interpreted in the continuum limit. Using techniques from renormalization theory, a self-consistent method is presented to match lattice results to continuum models. As an application, symmetry restoration in ϕ4 models is investigated.

Bathymetric Line Chesapeake Bay, Virginia Institute Of Marine Science, Sav Program, Chesapeake Bay Program

Data

This is a GIS layer showing the 1- and -2-meter low water contours that were created in support of the SAV (Submerged Aquatic Vegetation) goals by the Chesapeake Bay Program.

The file was originally created in the mid – 1990s in ArcInfo as a coverage and then later converted to a shapefile. In 2010 the Shoreline Studies Program was given permission to use the data and convert it a KML format that can be viewed in Google earth.

This bathymetric contours file covers the Chesapeake bay in Maryland and Virginia.

The Rosat Hri X-Ray Survey Of The Cygnus Loop, N. A. Levenson, J R. Graham, B. Aschenbach, W. P. Blair, W. Brinkmann, J. U. Busser, R. Egger, R. A. Fesen, J. J. Hester, S. M. Kahn, R. I. Klein, C. F. Mckee, R. Petre, R. Pisarski, J. C. Raymond, S. L. Snowden

Dartmouth Scholarship

We describe and report progress on the joint U.S. and German campaign to map the X-ray emission from the entire Cygnus Loop supernova remnant with the ROSAT High Resolution Imager. The Cygnus Loop is the prototype for a supernova remnant that is dominated by interactions with the interstellar medium and supplies fundamental physical information on this basic mechanism for shaping the interstellar medium. The global view that these high-resolution observations provide emphasizes the inhomogeneity of the interstellar medium and the pivotal nature of cloud-blast wave interactions in determining the X-ray morphology of the supernova remnant. While investigating the details of …

Chemistry And Environmental Implications Of Thio-Red And 2,4,6-Trimercaptotriazine Compounds, Kevin R. Henke

Theses and Dissertations

Many compounds, including Thio-Red® and 2,4,6-trimercaptotriazine, trisodium salt (TMT-55), have been marketed to precipitate mercury and other heavy metals from water, including contaminated ground waters. For the products to be effective, information is needed on the chemistry of the products, how they precipitate metals from aqueous solutions, and the chemistries and stabilities of the precipitates.

CS32-, HS-, and S2- are the dominant sulfur species in Thio-Red®. They precipitate heavy metals from water as sulfides (e.g., HgS, PbS, and ZnS). Thio-Red® also contains traces of poisonous carbon disulfide (CS2). Additional CS2 could form from reactions between dissolved heavy metals and CS32-. …

กิจกรรมสิ่งแวดล้อม

Thai Environment

No abstract provided.

ชนิดพันธุ์ต่างถิ่นในประเทศไทย, ประยงค์ อัฒจักร

Thai Environment

No abstract provided.

หลักการการติดตามตรวจสอบคุณภาพสิ่งแวดล้อม, ทวีวงศ์ ศรีบุรี

Thai Environment

No abstract provided.

แนะนำโครงการ : แนะนำโครงการใหม่ "การจัดการข้อมูลด้านสิ่งแวดล้อม", ทวีวงศ์ ศรีบุรี

Thai Environment

No abstract provided.

การจัดการของเสียในมหาวิทยาลัยโตเกียว, ชวลิต รัตนธรรมสกุล

Thai Environment

No abstract provided.

สิ่งแวดล้อมอุตสาหกรรม : โครงการเอไอเจ การร่วมทุนระหว่างประเทศเพื่อลดก๊าซเรือนกระจก, อ้อย พันธเดช

Thai Environment

No abstract provided.

รายงานสิ่งแวดล้อม : โครงการการจัดการสิ่งแวดล้อม จ.สมุทรปราการ โดยการมีส่วนร่วมของประชาชน, อ้อย พันธเดย

Thai Environment

No abstract provided.

ศัพท์น่ารู้ : Environmental Auditing

Thai Environment

No abstract provided.

ไขปัญหาสารพัน : ขยะติดเชื้อ, อุษณีย์ ศิริสุนทรไพบูลย์

Thai Environment

No abstract provided.

สัมภาษณ์พิเศษ : ดร.ศักดิ์สิทธิ์ ตรีเดช เลขาธิการสำนักงานนโยบายและแผนสิ่งแวดล้อม

Thai Environment

No abstract provided.

ผลกระทบของมลพิษต่อหน้าต่างผู้โดยสารบนเครื่องบิน, เชิดพันธ์ สุคนธ์พงษ์เผ่า

Thai Environment

No abstract provided.

คำถาม-คำตอบ : 6 คำถาม-คำตอบ เกี่ยวกับโรงไฟฟ้านิวเคลียร์ ข้อมูลอีกด้านที่ไม่ควรมองข้าม, กลุ่มศึกษาปัญหานิวเคลียร์

Thai Environment

No abstract provided.

สรุปข่าวสิ่งแวดล้อม

Thai Environment

No abstract provided.

จับตากฎหมายใหม่ : พระราชบัญญัติรักษาความสะอาดและความเป็นระเบียบเรียบร้อยของบ้านเมือง พ.ศ. 2535, อุษณีย์ ศิริสุนทรไพบูลย์

Thai Environment

No abstract provided.

The Litigious Plaintiff Hypothesis: Case Selection And Resolution, Theodore Eisenberg, Henry S. Farber

Cornell Law Faculty Publications

The process through which cases are selected for litigation cannot be ignored because it yields a set of lawsuits and plaintiffs that is far from a random selection either of potential claims or of potential claimants. We present a theoretical framework for understanding the operation of this suit-selection process and its relationship to the underlying distribution of potential claims and claimants. The model has implications for the trial rate and the plaintiff win rate at trial. Our empirical analysis, using data on over 200,000 federal civil litigations, yields results that are strongly consistent with the theory.

How Much Of The Nucleon Spin Is Carried By Glue?, Ian Balitsky, Xiangdong Ji

Physics Faculty Publications

We estimate in the QCD sum rule approach the amount of the nucleon spin carried by the gluon angular momentum: the sum of the gluon spin and orbital angular momenta. The result indicates that gluons contribute at least one half of the nucleon spin at the scale of 1GeV².

Controlling Curvature In The Minkowski Plane, Mostafa Ghandehari

Mathematics Technical Papers

Pontryagin's maximum principle is used to find the curve of shortest length with bounded Minkowskian curvature passing through two points with given initial and terminal tangents.

Charles Hugh Callison, John A. Drobnicki

Publications and Research

Charles Hugh Callison helped turn the National Audubon Society into a significant wildlife advocacy organization.

The Role Of HoX In Super- And Subsonic Aircraft Exhaust Plumes, T. F. Hanisco, P. O. Wennberg, R. C. Cohen, J. G. Anderson, D. W. Fahey, E. R. Keim, R. S. Gao, R. C. Wamsley, Stephen G. Donnelly Ph.D., L. A. Del Negro, R. J. Salawitch, K. K. Kelly, M. H. Proffitt

Chemistry Faculty Publications

The generation of sulfuric acid aerosols in aircraft exhaust has emerged as a critical issue in determining the impact of supersonic aircraft on stratospheric ozone. It has long been held that the first step in the mechanism of aerosol formation is the oxidation of SO2 emitted from the engine by OH in the exhaust plume. We report in situ measurements of OH and HO2 in the exhaust plumes of a supersonic (Air France Concorde) and a subsonic (NASA ER-2) aircraft in the lower stratosphere. These measurements imply that reactions with OH are responsible for oxidizing only a small fraction of …

Hydrogeological And Hydrochemical Connection Between The Decatur City Spring And Crystal Lake, Benton County, Arkansas, Demetra O. Salisbury, Ralph K. Davis

Journal of the Arkansas Academy of Science

Arkansas is ranked nationally in the production of broilers, laying hens, turkey, swine and beef cattle. These animals produce large volumes of waste, which are spread on pasture land as a method of disposal, as well as a source of fertilizer, resulting in nonpoint source contamination of surface water and ground water. One area of concern includes the Decatur City Spring, which provides municipal water for the city of Decatur. A total of eight sites in the surrounding area were monitored routinely for water quality parameters, including pH, specific conductance, and nitrate-nitrogen. Water temperature and spring and lake stage were …

Hexakis(Dimethylformamide)Bis(Hexaphenylcyclohexasiloxanehexaolato)Hexacopper(Ii) Dimethylformamide Solvate, Sergey V. Lindeman, Olga I. Shchegolikhina, Yulia A. Molodtsova, Alexandr A. Zhdanov

Chemistry Faculty Research and Publications

The sandwich-like title complex, hexakis(dimethylformamide)-1O,2O,3O,4O,5O,6O-bis[2,4,6,8,10,12-hexaphenylsiloxane-2,4,6,8,10,12-hexaolato(6-)-1:2²O¹,2:3²O²,3:4²O³,- 4:5²O⁴,5:6²O⁵,1:6²O⁶]hexacopper(II) tetrakis(dimethylformamide) solvate, [Cu₆(C₃H₇NO)₆{(C₆H₅)₆O₁₂Si₆}₂].4C₃H₇NO, is comprised of two regular crown-shaped macrocyclic hexadentate organosiloxanolate ligands chelating a flat Cu₆ hexagon, as in the ethanol-solvated analogue investigated previously. The title complex has a more distorted shape …

Preparation And Reactivity Of Acyclic (Pentadienyl)Iron(1+) Cations: Applications To Organic Synthesis, William A. Donaldson

Chemistry Faculty Research and Publications

No abstract provided.

Time-Optimal Tree Computations On Sparse Meshes, D. Bhagavathi, V. Bokka, H. Gurla, S. Olariu, J. L. Schwing

Computer Science Faculty Publications

The main goal of this work is to fathom the suitability of the mesh with multiple broadcasting architecture (MMB) for some tree-related computations. We view our contribution at two levels: on the one hand, we exhibit time lower bounds for a number of tree-related problems on the MMB. On the other hand, we show that these lower bounds are tight by exhibiting time-optimal tree algorithms on the MMB. Specifically, we show that the task of encoding and/or decoding n-node binary and ordered trees cannot be solved faster than Ω(log n) time even if the MMB has an infinite …

Measurement Of The Spectral Functions Of Vector Current Hadronic Tau Decays, R. Barate, M. Thulasidas

Research Collection School Of Computing and Information Systems

A measurement of the spectral functions of non-strange τ vector current final states is presented, using 124 358 τ pairs recorded by the ALEPH detector at LEP during the years 1991 to 1994. The spectral functions of the dominant two- and four-pion τ decay channels are compared to published results of e + e - annihilation experiments via isospin rotation. A combined fit of the pion form factor from τ decays and e + e - data is performed using different parametrizations. The mass and the width of the ρ ±(770) and the ρ 0(770) are separately determined in order …

Measurement Of The Τ Lepton Lifetime With The Three-Dimensional Impact Parameter Method, R. Barate, M. Thulasidas

Research Collection School Of Computing and Information Systems

A new method is presented for the measurement of the mean lepton lifetime using events in which are pair-produced and both's decay to hadrons.