Physical Sciences and Mathematics Commons^™

New Applications Of The Mannich Reaction, Yu-Fang Wang

Masters Theses & Specialist Projects

French chemists found that the reaction of trifluoroacetic anhydride with the N-oxide of trimethlyamine leads to the methylenedimethylimmonium trifluoroacetate. This salt is considered to be the actual reagent in the Mannich reaction conducted with dimethylamine and formaldehyde. Indeed use of this salt gives higher yields than those obtained via the classical Mannich procedure. This salt could be distilled under vacuum (5 x 10^-2 mm) and reacted with phenylmagnesium bromide to give an 80% yield of benzyldimethylamine. The trimethlsilyl ethers of ketones were employed as intermediates and exhibited regioselectively. For unsymmetrical ketones, the more stable enol was formed thermodynamically and …

The Hodie Method For Ordinary Differential Equations, Robert E. Lynch, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.

Preparations And Reactions Of Two Aldoketenes: T-Butyl And Benzyl, Donna E. Loeffler

Chemistry Honors Papers

This 25 page thesis examines preparations and reactions of aldoketenes.

The Geology Of The Castle Rock Area, Grant, Harney And Malheur Counties, Oregon, John David Wood

Dissertations and Theses

The geology of the Castle Rock area aids in the understanding of Cenozoic volcanic stratigraphy and structures in an area where these volcanic rocks thin near the margins of the pre-Tertiary basement rocks and structural trends are overlapping. The Castle Rock area is unique in several aspects and is important in understanding and interpreting the geology in adjacent regions which have all been studied, at least on a regional basis. Intrusive ash-flow bodies of the Dinner Creek Ash-Flow Tuff, well-exposed sections of complexly interstratified volcanic rocks and well-exposed faults, and of high amount of erosional relief are features which make …

An Inexpensive Differential Thermal Analyzer: Construction, Qualitative And Quantitative Applications, Kenneth T. Miller

Chemistry Honors Papers

This 33 page thesis examines the process of constructing an inexpensive, versatile differential thermal analysis instrument which can be easily modified and adapted to many applications.

Random Ergodic Sequences And P-Occupancy Sets, Jacob Israel Reich

Mathematics & Statistics ETDs

In this paper we study the behavior of random probability measures...

A Metric Graph Structure For Information Retrieval, Karl Jerry Melendez

Mathematics & Statistics ETDs

Document retrieval systems accept a user request for information and respond with a list of documents which contain information relevant to the request. When the documents (or abstracts of the documents) are stored in a computer memory, a function can be defined which estimates the semantic distance between documents. If this function together with the set of documents forms a metric space, a graph, which I call a progressive graph, can be constructed to aid the search for the documents with relevant information.

Progressive graphs are studied and the search algorithms which use this graph structure are presented. The search …

Geology Of The Apache No. 2 Mining District Hidalgo County, New Mexico, Stephen L. Peterson

Earth and Planetary Sciences ETDs

The Apache Hills, 10 km south of Hachita, New Mexico are a WNW-trending series of low hills, approximately 12 km long.

The rocks range in age from Paleozoic to Holocene. Limestone and sandstone of the Lower Cretaceous U-Bar and Mojado Formations are overlain by a thrust plate of Paleozoic limestone. The Oligocene Chapo Formation (new name) overlies the thrust plate uncomformably. The Formation is over 1,700 m thick and ranges in composition from rhyolite to basalt. The sedimentary and volcanic rocks have been intruded by several igneous rock types, the most prominent of which is a stock of quartz monzonite …

Turkey Point Tritium: Progress Report To Energy Research And Development Administration, H. Gote Ostlund, H. Gorman Dorsey

RSMAS Technical Reports

In 1972-73, Florida Power and Light Company (FPL) began operation of two nuclear reactors at Turkey Point on lower Biscayne Bay. The reactors are of the pressurized water type, each capable of 760 megawatts gross output and each requiring a large quantity of cooling water. Originally the demand for sufficient water for the operation of the nuclear reactors was to be met by a single-pass cooling system, utilizing Bay water (essentially an enlargement of the existing fossil fuel units cooling system). The proposed increase in cooling water requirement, from 1270 cu ft/sec to 4260 cu ft/sec, that would be required …

Scs 5: Notes On Chains In Cl-Objects, Karl Heinrich Hofmann

Seminar on Continuity in Semilattices

Also accessible at https://www2.mathematik.tu-darmstadt.de/~logik/keimel/scs.html

The Chemistry Of Chromium (Vi) And Chromium (V) Oxide Fluorides, Patrick Jay Green

Dissertations and Theses

New preparative routes to chromyl fluoride were sought. It was found that chlorine monofluoride reacts with chromium trioxide and chromyl chloride to produce chromyl fluoride. Attempts were made to define a mechanism for the reaction of ClF and Cr0₃ in light of by-products observed and previous investigations. Carbonyl fluoride and chromium trioxide react to form chromyl fluoride and carbon dioxide. A mechanism was also proposed for this reaction. Chromium trioxide with MoF₆ or WF₆ reacts to produce chromyl fluoride and the respective oxide tetrafluoride.

Numerical Computation Breakthroughs And Future Challenges, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.

The Cost Of Environmental Protection: A Review, Ian T. Ball

IUSTITIA

Dan Richardson's study is "an attempt to analyze present regulatory procedures in the New Jersey coastal zone, with an emphasis on the cost of these procedures to residential developers and housing consumers." Specifically, twenty-one residential developments in a coastal township were monitored from acquisition of land to final approval of the development proposal, and the costs of regulatory approvals, consulting engineering, legal, and governmental fees, as well as holding costs incurred by the developer, were itemized. The costs of the regulatory process were then broken down according to costs incurred during the local regulatory process and those costs resulting from …

Structural Geology Of The Northeast Quarter Of The Dutchman Butte Quadrangle, Southwest Oregon, Rauno K. Perttu

Dissertations and Theses

The northeast quarter of the Dutchman Butte quadrangle straddles the boundary of the Mesozoic Klamath Mountains province and the Tertiary Coast Range province. The boundary in this area is controlled by a major easttrending fault zone, herein named the Canyonville fault zone. Jurassic Rogue, Dothan, and Otter Point Formations have been offset right-laterally at least 40 kilometers. In latest Jurassic and early Cretaceous time, the fault zone formed the shoreline along which sediments of the Myrtle Group were deposited.

Movement on the Canyonville fault zone becale down-to-the-north in Eocene time forming the southern margin of the Eocene Coast Range basin. …

Abstracts Of Papers, Iowa Academy Of Science [88th Meeting], April 10, 1976, Iowa Academy Of Science

Iowa Academy of Science Documents

Presentation abstracts from the annual meeting of the Iowa Academy of Science

A Methodology For The Determination And Communication Of Requirements For An Information Processing System, Carl Allen Singer

Open Access Dissertations

A Requirements Statement Methodology is developed and coupled with a solution to the database design problem. The need for the Requirements Statement Methodology is discussed with the viewpoint of management texts and systems design guidelines. The methodology is developed using forms, computer generated forms, a data dictionary and interactive dialogue. A detailed explanation of PSL (the Problem Statement Language) and PSA (Problem Statement Analyzer) in the context of the Requirements Statement Methodology is presented. A formal discussion of data base design, specifically record and set design, appears. A theoretical model to solve record design is developed and a hueristic and …

The Legal And Institutional Status And Potential Of Aquaculture In Rhode Island, F. B. Montague

Marine Affairs Theses and Major Papers

The types of aquaculture practiced in Rhode Island are divided into extensive and intensive forms. Current efforts are discussed with accompanying photographs, and depuration is presented as a means for expanding the waters available for aquaculture. To gain insight into the institutional nature for Rhode Island aquaculture, the relevant state agencies and possible required permits are outlined, along with the impact of existing state laws affecting aquaculture.

The Annual Meeting Of The Iowa Academy Of Science April 9-10, 1976 [Program, 88th Meeting], Iowa Academy Of Science

Iowa Academy of Science Documents

Program Contents:

General Sessions:
Observations on Science and Policy Making - Dr. Richard Scribner, AAAS --- 5
Experiences as a Congressional Science Fellow - Dr. Pamela Ebert, NRC --- 5
Nuclear Energy - Dr. Dixy Lee Ray --- 7

Symposia and Joint Sessions:
Current Status of Cancer Research --- 9
Cedar River Ecology --- 9
Waste Disposal in Iowa --- 10
Relationship Between The Applications of Mathematics and the Teaching of Mathematics --- 11
What Does Industry Want From the Physical Science Graduate? --- 11

Social Hour and Banquet --- 7
Workshops on Energy and The Environment --- 10
Academy …

An Algorithmic Approach To The Detection And Prevention Of Plagiarism, Karl J. Ottenstein

Department of Computer Science Technical Reports

No abstract provided.

Geology Newsletter- 1976, Department Of Geology

Geological and Environmental Sciences News

Vol. 1, No . 2

• Dear Department Alumni and Friends
• Graduate Students
• Geology Earth Science Club News
• This N' That

Approximating The Number Of Blocks Accessed In Data Base Organizations, S. B. Yao

Department of Computer Science Technical Reports

No abstract provided.

Statistical Computing - The Vanguard Of The Future Of Education, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.

Elektronenmikroskopische Untersuchungen An Opalen Von Bayatafyon Und Karamanca Köyü (Şaphane, Gedi̇z-Kütahya), M. Andaç, H. Newesely, H. Wilk

Bulletin of the Mineral Research and Exploration

No abstract provided.

Geology, Structural Features And Sulphide And Manganese Occurrences Of The Hopa-Arhavi̇ Area (Ne Turkey), Dragan Koprivica

Bulletin of the Mineral Research and Exploration

No abstract provided.

La Serie Carbonatee Triasique Du Massif Du Di̇poyraz Dağ (Taurus Occidental, Turquie), J. F. Dumont, O. Monod

Bulletin of the Mineral Research and Exploration

No abstract provided.

Metallurgical Practices In Early Anatolia, Prentiss S. De Jesus

Bulletin of the Mineral Research and Exploration

No abstract provided.

Kolemani̇t Flotasyon Konsantreleri̇ni̇n Bri̇ketleme Yoluyle Aglomerasyonu, M.Hayri Erten

Bulletin of the Mineral Research and Exploration

No abstract provided.

Intermetallic Reactions In Vacuum-Deposited Nickel And Gold Films On (111) Silicon Single Crystals, K. H. Yoon, Gordon Lewis, L. L. Levenson

Materials Science and Engineering Faculty Research & Creative Works

Pure nickel and gold thin films were vacuum-deposited on (111) silicon single crystals. When Ni/Au/Si or Au/Ni/Si samples were heated to about 550° in situ, hexagonal or deformed hexagonal shaped crystallites were formed on the silicon substrates. The composition of these crystallites was determined by using x-ray diffraction, scanning electron microscopy and scanning Auger microprobe methods. The crystallites were identified as NiSi2. The crystal-lites on the (111) silicon plane parallel to the surface appeared as regular hexagons while the inclined crystal-lites resembled trapezia. The results of Auger spectra and in-depth composition profiles for Ni, Au, and Si showed that the …

Hall-Effect Measurements In Cd-Implanted Gaas, B. K. Shin, David C. Look, Y. S. Park, J. E. Ehret

Physics Faculty Publications

Cadmium ions were implanted in GaAs crystals at 135 keV to doses ranging from 10¹² to 10¹⁶ ion/cm² at room temperature. Sheet‐resistivity and Hall‐effect measurements were carried out as a function of temperature, 4.2–300°K, after annealings at 700, 800, or 900°C in an Ar ambient. The sample surfaces were protected with pyrolytically deposited Si₃N₄. Significant p‐type conduction was observed when samples with doses ≳10¹³cm⁻² were annealed at ≳700°C. For doses below 10¹⁴ cm⁻² nearly complete electrical activity was attained after an 800–900°C anneal. The Cd profiles were …

Evidence Favoring Nonevolutionary Cepheid Masses, Norman R. Simon, Edward G. Schmidt

Edward Schmidt Publications

It is suggested that the bumps on the velocity curves of nonlinear Cepheid models may be understood as the consequence of a resonance between the fundamental and the second overtone modes of the pulsating star. Thus the presence of bumps can be inferred from linear calculations. The region of the observational instability strip containing bumps is compared with the location of the calculated resonances. As was the case for the nonlinear calculations, we find that masses considerably less than evolutionary values are required to bring agreement between the observations and the theory.