Physical Sciences and Mathematics Commons^™

Test 1089: Case 770 Power Shift Diesel 12-Speed (Chassis S/N 8675001 And Up), Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT

GENERAL CONDITIONS

East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers.

PREPARATION FOR PERFORMANCE RUNS

The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …

Test 1063: John Deere 7020, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 1073: John Deere 4620 Syncro Range, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 1084: John Deere 2030, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 1085: John Deere 2030/John Deere 2440, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Environmental Changes Produced By Cold-Water Outlets From Three Arkansas Reservoirs, Carl E. Hoffman, Raj V. Kilambi

Technical Reports

Water qualities of two natural streams (Buffalo and Kings Rivers), one new coId-tailwater (Beaver), and two old coId-tailwaters (Norfork and Bull Shoals) in northwestern Arkansas were studied from July 1965 through October 1968. The essential difference between the old cold-tailwaters and natural streams is a change in water quality which allows the development of a new productive ecological environment. Features which typify the old tailwaters are as follows: (1) relatively homioithermal temperatures; (2) stream beds scoured by strong hydoelectric power generation currents; (3) abundant phytoplankton and benthic macroinvertebrates; and (4) absence of warm water game fishes. Environmental factors characterizing natural …

Land Levelling With Scrapers, K R. Southon

Journal of the Department of Agriculture, Western Australia, Series 4

A VARIETY of earth-moving equipment can be used in preparing land for flood irrigation, but the best machine for extensive earth moving over some distance is a power-driven, carry-all scraper.

The Distribution And Ecology Of The Gammaridea (Crustacea : Amphipoda) Of The Lower Chesapeake Estuaries, James Feely, Marvin L. Wass

Reports

Gammarid amphipods of three tidal rivers entering Chesapeake Bay were studied for ten months, particularly in the York River where 40 species were record during the period. Several species moved up or down the rivers with changing salinity. The more abundant species had longer breeding seasons. The number of described species from lower Chesapeake Bay is now 42 and the presence of 10 undescribed species and of several which bracket the region indicates that much remains to be learned about amphipods in the Bay. Nineteen of these have a boreal affinity and seven are limited to the Virginian subprovince. A …

The Environmental, Resource-Use And Management Needs Of The Coast Zone, A Compendium, William J. Hargis Jr., Beverly L. Laird

Reports

As part of art extensive effort to develop a better understanding and evaluation of the problems imposed upon the Chesapeake Bay System by the activities of man and the management and informational needs related to their solution, we decided to examine a number of documents of ranging authorship and origin. The reports, papers, and manuscripts, comprising the resource materials utilized, range from the massive study entitled National Estuary Study -- recently completed by the United States Fish and Wildlife Service of the U. S. Department of the Interior, to internal study manuscripts of the Institute, itself. Included were studies. aimed …

Ground Water Of The Uncompahgre Valley Montrose County, Colorado, Ted William Craig

Masters Theses

"Data from water quality tests of 50 wells and from general well information of 309 wells registered with the Colorado Division of Water Resources are presented for the area of Montrose County, Colorado, drained by the Uncompahgre River. This information, along with other pertinent information such as water laws and costs, is evaluated to determine the feasibility of increasing the use of ground water in the area. The drainage basin of the Uncompahgre River within the Montrose area bas three main geologic structures: the Uncompahgre uplift, the Montrose syncline, and the Gunnison uplift. All formations exposed in the area are …

The Effects Of Divalent Metal Ions On The Micellar Properties Of Sodium Dodecyl Sulfate, Michael U. Oko, Raymond L. Venable

Chemistry Faculty Research & Creative Works

Critical micelle concentrations and micellar molecular weights have been determined for sodium dodecyl sulfate in the presence of nitrates of copper, lead, zinc, and magnesium and critical micelle concentrations have been determined with sodium nitrate and silver nitrate as the added electrolytes. The thickness of the ionic atmosphere at the critical micelle concentration has been found to be 34.1 Å with no electrolyte present and 33.6 Å with 9.66 x 10-6 M sodium or silver nitrate and was found to increase upon addition of the 2:1 electrolytes. This is explained in terms of molecular and ionic interactions. Micellar molecular weights …

Metal Salt Catalyzed Carbenoids, Billy W. Peace

Doctoral Dissertations

"The interaction of diazomalonic esters with olefins in the presence of homogeneous copper(I) and copper(II) catalyst has been examined as a function of olefin structure, solvent media, ionic strength, catalyst structure and catalyst concentration, using partial rate data. It has been possible to determine the fine mechanistic details of the cycloproponation, C-H insertion and "dimer" forming reactions. The initial step is displacement of a ligand from copper by diazo compound in a pre-equilibrium, loss of nitrogen in the rate determining step, return of the ligand, displacement of metal from the carbenoid by olefin, followed by collapse to products. Studies revealed …

The Flathead Catfish In Unchannelized And Channelized Missouri River, Nebraska, Larry A. Morris, Ralph Langemeier, Arthur Witt Jr.

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

Flathead catfish, Pylodictus olivaris (Rafinesque), were studied in approximately 83.7 km of unchannelized and 67.6 km miles of channelized Missouri River. Growth rates were slower in the unchannelized section than they were in the channelized section. The oldest fish in the unchannelized section was 25 years old, while in the channelized study area the oldest was 10 years. In the pectoral spines of progressively older fish from both sections, enlargement of the lumen obliterated early annuli. Much of the annual increment of growth was accomplished during June, July and August. Males became sexually mature at 3 to 4 years of …

Surface Plasmons And The Reflectivity Of N-Type Insb, William E. Anderson, Ralph William Alexander, Robert John Bell

Physics Faculty Research & Creative Works

The Reflectivity of N-Type InSb Has Been Measured in the Far Infrared. the Doping of the Samples Was Such that the Free-Carrier Plasma Frequency Was Near the LO Mode Frequency. the Results Suggest that Samples with a Sufficiently Thick Damage Layer Show Effects Due to Surface Plasmons. Use of a Simple Model Indicates that the Surface-Plasma Excitations Are Coupled to the Phonons. © 1971 the American Physical Society.

Scattering Of Waves In Many Dimensions, I. Adawi

Physics Faculty Research & Creative Works

Scattering by a spherical potential is discussed in all dimensions by one formulation using the partial-wave expansion method. The optical theorem relating the total scattering cross section σ to the forward scattering amplitude f(0) is derived.

Experimental And Theoretical Study Of The Sign Preference In The Nucleation Of Water Vapor, Daniel R. White, James L. Kassner

Physics Faculty Research & Creative Works

The nucleation of water vapor on ions in atmospheres of helium and argon was studied using an expansion type cloud chamber. Separation of the positive and negative ions was achieved so that the nucleation could be studied as a function of both the sign of the ionic charge and the supersaturation. A semiphenominological theory was developed as an extension of the classical liquid drop theory to include the effects of the ionic charge on the nucleation process. The theoretical model of the prenucleation embryo was assumed to possess an oriented dipole surface layer with the direction of orientation dependent on …

Heisenberg Ferromagnet With Biquadratic Exchange, Harry A. Brown

Physics Faculty Research & Creative Works

The usual Heisenberg Hamiltonian with bilinear exchange -2JS→1•S→2 has been extended to include a biquadratic term -2αJ(S→1•S→2)2, with an adjustable parameter α. A method equivalent to constant coupling was employed to calculate the effect of the biquadratic exchange term on the Curie temperature, magnetization, susceptibility, specific heat, and entropy for lattices with spin-1 atoms. As α goes from 0 to 1, the Curie temperature falls by a factor 2 to 3, while the asymptotic Curie temperature is reduced by the factor 2. The magnetization rises much more rapidly below TC, and the specific heat has a peak and discontinuity several …

Die Isopoda Terrestria Der Höhlen Von Ereğli Am Schwarzen Meer (5. Beitrag Zur Kenntnis Der Türkischen Isopoden), Hans Strouhal

International Journal of Speleology

Dr. Klaus Dobat (Tübingen) and Madame Dobat have collected the following terrestrial Isopods from caves of Eregli on the coasts of the Black Sea, North of Turkey: 1) Ligidium (Ligidium) assimile sp. nov., trogloxene widely distributed in the northern Anatolian territories; 2) Chasmatoniscus oculatus gen. et sp. nov., troglophile; 3) Trichoniscus (Trichoniscus) heracleotis sp. nov., troglobic; 4) Cylisticus (Platycylisticus) dobati subgen. et sp. nov., troglophile; 5) Cylisticus (Cylisticus) mechthildae sp. nov., troglobic. The author gives the descriptions together with figures of all these new Oniscoidea in this paper, M. Dobat describes the caves of Ereğli and lists the animals herein …

Interplanar Force Constants Of Symmetry Planes In Close-Packed Structures, Paul G Khoury

Archived Theses and Dissertations

No abstract provided.

The History And Nature Of Pi, Karen A. Rand

Honors Theses

No abstract provided.

Simple Evaporimeter For Timing Trickle Irrigation, C R. Coffman

Journal of the Department of Agriculture, Western Australia, Series 4

DIFFERENCES in soil types and size of trees in orchards make it impossible to give a single recommendation for trickle irrigation running time.

Daily running time for each situation can be simply and fairly accurately calculated from weekly readings of an easily constructed evaporimeter.

Thermochemical Bond Energy Studies Of Various Transitional-Metal Bis-Beta-Diketone Compounds And Their Inner Orbital Splittings By Bomb Calorimetry, Charles Irvin Drew

University of the Pacific Theses and Dissertations

The thermochemical technique of static bomb calorimetry was used to determine the heats of combustion for some twenty chelated metal complexes. Studied were the first row transitional metals (Mn⁺² through Zn⁺²) bis-beta diketone complexes of acetylacetome and their related ligands and the acetyl ·· acetonates of Pd⁺², Pt⁺², Be⁺², Ce⁺³, Tl⁺¹, and Zr⁺⁴.

Solid purified samples of from 1 to 2 grams were combusted in a pressurized oxygen atmosphere to the reaction products H₂0 (1), C0₂ (g) and metallic oxides. The temperature …

A Study Of Productivity In Drosophila Immigrans, Lalita Helen Shenoy Waterman

University of the Pacific Theses and Dissertations

In this study it has been demonstrated that Drosophila immigrans females begin laying fertile eggs on the third or fourth day following eclosion, with productivity reaching a peak between the fifth and sixth days of adult life. A delay in mating of even four days decreases the rate as well as the volume of productivity. Based on the evidence in the literature, it is suggested that the stimulus to oviposition may be mechanical or chemical on the corpora allata via the ventral nerve cord.

Study Of Channel Sediments, James River & Hampton Roads Area, R. J. Huggett

Reports

Bottom sediment samples were collected from 3 locations transecting the channel in the lower James and Elizabeth rivers.

Les Milieux De Vie De Stenasellus Virei Dollfuss, 1897 (Crustacé Asellote Troglobie): Données Préliminaires, Guy Magniez

International Journal of Speleology

Stenasellus virei is now known from 77 localities (caves, phreatic waters and underflow of some rivers) of the eastern Aquitanian basin, central and eastern Pyrenees, and of Spain. A classification of the different biotopes of the species is attempted herein, and some of their characteristics are summarily described. This cavernicolous species can now be viewed in a new light, as much ecological as systematic or biogeographic.

Quaire Nouvelles Bathynella (Crustacea, Syncarida) De Roumanie: De Nouveau Sur Le «Dilemme Bathynella Natans Vejd», Eugène Serban

International Journal of Speleology

The paper presents the diagnosis of 4 new Bathynella species found in Romania: B. paranatans nov. sp., B. boteai nov. sp., B. motrensis nov. sp. and B. plesai nov. sp.; a discussion on B. cf. scythica Botosàneanu et Damian is also given. The morphological features which were used are the general and the fine structure of the genital pereiopode of the male (Pl. 5—8), the chaetotaxy of the maxillula, maxilla, thoracic appendages, uropods and furca. The presence of the distal (coxal) epipodite on the first pereiopod in B. paranatans nov. sp., distinguishes this species from the others (Pl. 1—4). The …

A Comparative Limnological Study Of Three East Central Illinois Farm Ponds, Charles W. Furrey

Masters Theses

A comparative limnological study was conducted at three east central Illinois farm ponds between March 15 and September 18, 1970, to determine the incidence of nitrogen and phosphorus in the ponds resulting from agricultural sources. All ponds had corn, soybean, winter wheat cropping systems on their watersheds. Corn accounted for the greatest fertilizer application. One pond had significant numbers of livestock on its watershed that contributed high amounts of nitrogen and phosphorus to its waters. Limnological parameters measured at the surface, mid depth, and bottom of a ten foot water column in each pond were water temperature, dissolved oxygen, carbon …

Tungsten Carbonyl Complexes Containing Positively Charged Phosphorus Ligands, Dilip Poonamchand Shah

Masters Theses

Two positively charged complexes, (CO)₅WP(C₆H₅)₂CH₂CH₂-⁺P(C₆H₅)₂(CH₂C₆H₅) Br^- and (CO)₅W(C₆H₅)₂PCH₂⁺P(C₆H₅)₂CH₃ I^-, were synthesized, and their carbonyl stretching frequencies and force constants were compared to those of the uncharged complexes, (CO)₅WP(C₆H₅)₂CH₂CH₂P(C₆H₅)₂ and (CO)₅WP(C₆H₅) …

Studies In The Preparation Of Metal Enolates Of 3,3,5,5-Tetramethylcyclohexanone And Their Reactions With Lead(Iv) And Mercury(Ii) Acetates, Donald Robert Paveska

Masters Theses

No abstract provided.

Pleistocene Aquifers In Coles County, Illinois, James D. Hopkins

Masters Theses

No abstract provided.