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Articles 287341 - 287370 of 292809
Full-Text Articles in Physical Sciences and Mathematics
Geology And Ground-Water Resources Of Northern Lea County, New Mexico, Sidney R. Ash
Geology And Ground-Water Resources Of Northern Lea County, New Mexico, Sidney R. Ash
Earth and Planetary Sciences ETDs
The economy of northern Lea County is dependent upon groundwater; the only other source of water is the runoff from precipitation that is caught and retained in the man-made or natural reservoirs, where is it used for water stock. Irrigation utilizes most of the groundwater pumped; much smaller amounts are used for stock watering and industrial, public, rural and domestic supplies. In 1958, about 107,000 acre-feet of groundwater was pumped for irrigation and 19,000 acre-feet was pumped for all other uses. On the basis of present production of potable water, the economically usable supply will be depleted in certain areas …
Petrology Of The Precambrian Rocks Of Part Of The Monte Largo Area, Nm, Paul Wayne Lambert
Petrology Of The Precambrian Rocks Of Part Of The Monte Largo Area, Nm, Paul Wayne Lambert
Earth and Planetary Sciences ETDs
Approximately 7 to 8 square miles of Precambrian rocks are exposed in the vicinity of the Monte Largo Hills in north-central New Mexico. The Precambrian rocks are bounded mainly by Pennsylvanian sedimentary rocks in both fault and noncomformable contact.
The area is made up largely of quartz-feldspar gneiss, hornblende gneiss, and quartzite. Quartz-feldspar gneiss is the most abundant rock type. Mica schist and sillimanite hornfels occur in minor amounts. Other Precambrian rocks include medium-grained granite, splite and pegmatite dikes, and quartz veins. A minor amount of migmatite is present as a result of the intimate association of quartz-feldspar gneiss and …
Design Of An Instrument To Detect High Energy Photons At High Altitudes, Donald L. Evans
Design Of An Instrument To Detect High Energy Photons At High Altitudes, Donald L. Evans
Physics & Astronomy ETDs
The purpose of this thesis is to design a high altitude instrument which will detect photons with an energy greater than 1 Bev, and which will discriminate between zenith and albedo radiation.
The Structure And Stratigraphy Of The Frontier Formation In The Big Piney-La Barge Area Sublette And Lincoln Counties, Wyoming, Eldred D. Johnson
The Structure And Stratigraphy Of The Frontier Formation In The Big Piney-La Barge Area Sublette And Lincoln Counties, Wyoming, Eldred D. Johnson
Earth and Planetary Sciences ETDs
This study was undertaken to fulfill part of the requirements for the degree of Master in Science of Geology. The Big Piney-LA Barge area in western Wyoming covers approximately 354 square miles on the western edge of the Green River Basin and the eastern edge of the over thrust belt. The area is underlain by a sedimentary sequence containing rocks representing all the geologic time periods form the Cambrian through the Cenozoic, with the exception of the Silurian period. The entire known post-Precambrian strati-graphic sequence is approximately 18,00 feet thick.
Phase Equilibria In Fused Salt Systems: Binary Systems Of Plutonium(Iii) Chloride With The Chlorides Of Magnesium, Calcium Strontium, And Barium, Karl W. R. Johnson
Phase Equilibria In Fused Salt Systems: Binary Systems Of Plutonium(Iii) Chloride With The Chlorides Of Magnesium, Calcium Strontium, And Barium, Karl W. R. Johnson
Chemistry and Chemical Biology ETDs
Fused salt systems containing oxides have received the most attention to date, because of their occurrence in minerals and ores and their application to ceramics. The next most widely studied of group of compounds are the metal halides, particularly the metal chlorides. Despite the fact that many of the metal chlorides are hygroscopic, the salts lend themselves to experimentation because a large majority undergo stable solid-liquid transformations below 1000 degrees C, are generally ionic, and are relatively non-corrosive.
Absorbance Of The Oh Radical In A Specific Wavelength Interval Near 309a, Paul F. Bird
Absorbance Of The Oh Radical In A Specific Wavelength Interval Near 309a, Paul F. Bird
Physics & Astronomy ETDs
The absorbance of the OH radical as a function of optical density was studied by computing the absorbance for an incident radiation in the wavelength interval 3089A-3097A. The absorbance was studied for 3 different temperatures and various values of the parameters specifying the line shapes and magnitude of the spectral absorption coefficient.
Shock-Tube Determination Of Dissociation Rates Of Oxygen, John P. Rink
Shock-Tube Determination Of Dissociation Rates Of Oxygen, John P. Rink
Physics & Astronomy ETDs
This study has a two-fold purpose--to demonstrate the feasibility of using x-ray densitometry of shock waves to determine chemical reaction rates and to obtain an accurate, independent measurement of the dissociation rate of oxygen.
The rate of dissociation of oxygen in Xe-O2 mixtures was measured over a temperature range of 3000°K to 6000°K. An x-ray densitometer was used to measure the density during the dissociation process behind a shock wave. It was possible to match the experimental data with theoretical density profiles over a wide range of compositions and initial conditions.
The agreement between results reported here and previous …
Experimental Studies Of The Visible Absorption Spectrum Of Titanium (Iii) Acetylacetonate In Solutions And Rigid Glasses, Arthur L. Langhorst Jr.
Experimental Studies Of The Visible Absorption Spectrum Of Titanium (Iii) Acetylacetonate In Solutions And Rigid Glasses, Arthur L. Langhorst Jr.
Chemistry and Chemical Biology ETDs
Titanium (III) acetylacetonate was synthesized and the visible absorption spectrum was measured. A prominent absorption band, ymax at approximately 6000 was found with molar absorption coefficient of ~1000. The spectrum was investigated at temperatures ranging from 25 degrees C to 77 degrees K. At 7 7 degrees K the band was resolved into five well defined peaks at 4750, 5100, 5520, 5950 and 6460. An apparatus for obtaining spectrophotometric measurements of solution and rigid glasses was designed and fabricated.
A Petrographic And Environmental Study Of The Upper Cretaceous Greenhorn Limestone, New Mexico, John W. Emerson
A Petrographic And Environmental Study Of The Upper Cretaceous Greenhorn Limestone, New Mexico, John W. Emerson
Earth and Planetary Sciences ETDs
The Upper Cretaceous Greenhorn Limestone is composed of intercalated agrillaceous limestone and calcareous shale beds which crop out over much of the Western Interior. The Greenhorn was deposited in late Cenomanian and early Turonian time in a westward transgressing sea. In New Mexico the age is early Turonian. The edge of deposition extends as far south as Capitan and Carthage, northward through western Bernalillio County, and northwest through Toadlena.
Geology Of The Queen Lake Domes Near Malaga, Eddy County, New Mexico, George R. Reddy
Geology Of The Queen Lake Domes Near Malaga, Eddy County, New Mexico, George R. Reddy
Earth and Planetary Sciences ETDs
There are many domes in the vicinity of Queen Lake near the Pecos River in southern Eddy County. The rocks involved in the doming range in age from Permian to Recent. Their relationships indicate that there were two periods of doming, the first during early Pleistocene time and the second after the formation of Recent caliche.
Salt beds are present in the Salado and Castile formations beneath the area in which the domes are distributed. At Queen Lake the salt is within 300 feet of the surface. Farther east, the salt-bearing rocks are buried beneath Triassic and Cenozoic deposits. These …
Lithogenesis Of Atoll Sediments, Uliga Island, Majuro Atoll, Marshall Islands, Phyllis B. Helms
Lithogenesis Of Atoll Sediments, Uliga Island, Majuro Atoll, Marshall Islands, Phyllis B. Helms
Earth and Planetary Sciences ETDs
Sixteen thin sections and 53 samples of rock and sand were examined under petrographic and binocular microscopes to determine composition, kinds of cement, degrees of cementation, and the sequence of lithogenesis of the consolidated materials. Studies were made of the loose sediments to relate the characteristics of the sedimentary grains to environmental energy of today, and then collate these data with the lithified sediments.
The Synthesis Of Potential Antitumor Compounds, Duane L. Aldous
The Synthesis Of Potential Antitumor Compounds, Duane L. Aldous
Chemistry and Chemical Biology ETDs
The antitumor activity found in such ring systems as the purine, pyrazolo [3,4-d] pyrimidine, and the 8-azapurine prompted the preparation of the imidazo [4,5-d] pyridazine ring system. Castle and Seese were one of the first to study this ring system. 4-Aminoimidazo[4,5-d]pyridazine possessed some anitumor activity. This antitumor activity suggested the preparation of the 4,7-disubstituted-aminoimidazo{4,5-d]pyridazines reported here. The antileukemic activity reported for 6-purinethiol led to the synthesis of several 4- and/or 7-mono-and disubstitutedthioimidazo[4,5-d]pyridazines.
Sedimentary Petrogenesis Of The Yeso-Glorieta San Andres Transition, Joyita Hills, Socorro County, New Mexico, James R. Huber
Sedimentary Petrogenesis Of The Yeso-Glorieta San Andres Transition, Joyita Hills, Socorro County, New Mexico, James R. Huber
Earth and Planetary Sciences ETDs
The transitional character of the middle Permian (Leonardian and Guadalupian) Yeso Formation, Glorieta sandstone, and San Andres formation in central New Mexico has been recognized in several reports (Needham and Bates, 1943; Wilpolt, et. al., 1946; Wilpolt and Wanek, 1951; and Boyd, 1958). Interpretation of the depositional history and environment of this sequence has been restricted to generalizations based on field observation.
A detailed petrographic study of the Yeso-Glorieta-San Andres transition at a single locality was undertaken in an attempt to gain better understanding of this stratigraphic interval.
Spectroscopic Studies Of The Luminescences Of Rare Earth Chelates, Ruth Elaine Whan
Spectroscopic Studies Of The Luminescences Of Rare Earth Chelates, Ruth Elaine Whan
Chemistry and Chemical Biology ETDs
A variety of lanthanide chelates were prepared for preliminary luminescence studies under excitation by ultraviolet light. From these, chelates of benzoylacetone, dibenzoylmethane, tribenzoylmethane, and 8-hydroxyquinoline were selected for more extensive investigation. Energies of the lowest excited singlet and triplet states of the chelates were determined. Average values of 24,500 cm-1 and 20,500 cm-1 respectively were obtained for the dibenzoylmethides and 24,400 cm-1 and 21,450 cm-1 for the benzoylacetonates. Only small variations of a few hundred wavenumbers in the positions of the excited states were found as the chelated ion was varied.
Test 794: Allis-Chalmers Hd3 (Diesel), Nebraska Tractor Test Lab
Test 794: Allis-Chalmers Hd3 (Diesel), 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 795: Allis-Chalmers D15 (Gasoline), Nebraska Tractor Test Lab
Test 795: Allis-Chalmers D15 (Gasoline), 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 796: Allis-Chalmers D15 (Diesel), Nebraska Tractor Test Lab
Test 796: Allis-Chalmers D15 (Diesel), 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 797: Allis-Chalmers D15 (Lpg), Nebraska Tractor Test Lab
Test 797: Allis-Chalmers D15 (Lpg), 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 793: Allis-Chalmers H3 (Diesel), Nebraska Tractor Test Lab
Test 793: Allis-Chalmers H3 (Diesel), 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 …
Geology Of The Nutria Monocline, Mckinley County, New Mexico, R. John Edmonds
Geology Of The Nutria Monocline, Mckinley County, New Mexico, R. John Edmonds
Earth and Planetary Sciences ETDs
The Nutria monocline forms the northwestern boundary of the Zuni uplift in McKinley County, New Mexico. The sedimentary rocks that are exposed along the monocline range in age from Permian to Cretaceous and rest on Granite of probable Precambrian age. The Jurassic Todilto limestone, which is present north of the mapped area, pinches out in a southerly direction. South of this pinch-out the massive sandstone of the Entrada formation joins the main body of the Zuni sandstone. Only the even bedded, silty sandstone that has previously been considered to be the middle member of the Entrada is regarded as Entrada …
Geology Of The Sharp Mountain Area, Southern Part Of The Bear River Range, Utah, Preston L. Hafen
Geology Of The Sharp Mountain Area, Southern Part Of The Bear River Range, Utah, Preston L. Hafen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The Sharp Mountain area is situated in the southern part of the Bear River Range in Utah. The geology of the Bear River Range to the north of this area, in Utah and Idaho, has been mapped; however, prior to this study little was known about the Sharp Mountain area. The purpose of this investigation are as follows: (1) to map and describe the geology of the area, and (2) to relate the stratigraphic and structural features of the Sharp Mountain area to those of the surrounding region.
Effect Of Anions On The Sodium Adsorption Capacity And Electrophoretic Mobility Of Sodium Saturated Utah Bentonite, Theron G. Sommerfeldt
Effect Of Anions On The Sodium Adsorption Capacity And Electrophoretic Mobility Of Sodium Saturated Utah Bentonite, Theron G. Sommerfeldt
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Sodium saturated Utah bentonite was equilibrated in several concentrations of various sodium salt solutions. The effect of anions on the amount of sodium adsorbed was determined. The effect of anions on the electrophoretic mobility of the clay was also studied. The results are reported herein.
Anions, are generally considered, in the field of surface chemistry, to have no influence on the amount of cations adsorbed or the electrophoretic mobility of negatively charged colloids (5, 10, 28, 41). There is evidence (2, 7, 24, 26, 27, 33) to indicate that anions sometimes have an appreciable effect. If anions influence the amount …
Phosphorus Status Of Genola Soils In Utah, Warren E. Bendixen
Phosphorus Status Of Genola Soils In Utah, Warren E. Bendixen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
With increasing pressure on economical production of crops, more fertilizers are being applied to the soil each year to increase crop yields. Economical production of crops with applications of fertilizer requires an evaluation of the essential elements of the various crops so applications of fertilizer will not exceed the law of diminishing returns.
Because varying soil, moisture, and climatic conditions influence the response to added fertilizers, some workers (18, 26, 38) have contended that the only reliable way of determining the fertilization needs of a crop is to conduct a trial on the particular farm. The length of time involved …
Polarographic Investigation Of An Unusual Contaminant In Trichlorobiphenyl, Henry Michael Stahr
Polarographic Investigation Of An Unusual Contaminant In Trichlorobiphenyl, Henry Michael Stahr
Honors Theses
An interest in polarography of organic compounds developed because of the need for an instrumental technique to determine unstable chlorine compounds in askarels used in the electrical industry for dielectric fluids. A chance contamination of trichlorobiphenyl used to impregnate capacitors caused the electrical industry untimely failures in their devices in 1956. These compounds break down under the influence of heat and electrical stress to form a buildup of conducting species which ultimately cause capacitors to fail. (1) Several test methods have been developed,( 2) all of which involve anionic hydrolysis of the unstable compounds and a potentiometric titration of the …
Sedimentation And Diffusion Coefficients Of Legoglobin Fractions, Alfonso R. Trujillo
Sedimentation And Diffusion Coefficients Of Legoglobin Fractions, Alfonso R. Trujillo
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The preparation of root nodule extract by Virtanen, et. al., has created a good deal of interest in the study of plant hemoglobin (legoglobin). In the preparation of any new substances, it is of interest to determine the physical constants of the new species.
The Influence Of Soil Compaction Upon The Thermodynamics Of Soil Moisture, James E. Box Jr.
The Influence Of Soil Compaction Upon The Thermodynamics Of Soil Moisture, James E. Box Jr.
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The retention of water in soils is a very interesting subject. Soil-water research presents a great challenge to research workers. The challenge is broad in scope and extends from the field problems of large irrigation projects to the atomic scale of the solid-liquid interface.
If scientists are going to describe scientifically soil-water relations, they must ultimately utilize the instruments of science and the language of mathematics. To the end of the latter the mathematics of thermodynamics has been applied in these studies of water retention in soils.
Influence Of Compaction And Freezing On The Structure And Permeability Of Some Selected Horizons From Northern Utah Soils, Samir Ramzy Nagmoush
Influence Of Compaction And Freezing On The Structure And Permeability Of Some Selected Horizons From Northern Utah Soils, Samir Ramzy Nagmoush
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Frequently, in evaluating plant deficiencies, one considers only those soil factors which are associated with the fertility of the soil-- mainly the levels of phosphorus, potash, nitrogen, and organic matter. A certain level of nutrition is essential for plant growth, but in order for the nutrients to exert their maximum influence on the productivity of the soil, it is equally important that a good soil environment be provided and maintained. A good environment requires that good physical conditions of soil, sir, and water be in balance.
The Influence Of Temperature On The Impedance To Water Flow Through Plants, Royal Duane Jensen
The Influence Of Temperature On The Impedance To Water Flow Through Plants, Royal Duane Jensen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This era has been termed the atomic or space age. The greatest concern of most people seems to be centered around survival from the destruction and suffering that might be caused by atomic and nuclear weapons. However, along with this, the world is confronted with perhaps a greater disaster--a potential calamity seldom realized by most people, yet a problem which grows more serious in the world each year--a tragedy which would probably be worse than destruction from nuclear weapons. This encroaching catastrophe is starvation.
Even today the majority of the people in the world do not have enough food. Each …
Moisture And Temperature Effects On The Transformations Of Nitrogen From Applied Ammonium Sulfate In A Calcareous Soil, John Keith Justice
Moisture And Temperature Effects On The Transformations Of Nitrogen From Applied Ammonium Sulfate In A Calcareous Soil, John Keith Justice
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Nitrogen has commonly been a deficient element in the cultivated soils of the world since the beginning of agriculture. The general acceptance of the practice of using manures as a means of increasing plant growth, as shown by the records of ancient civilizations, attest to this fact. Since the time of von Liebig there has been an increasing awareness of the importance of this deficiency in soils. As a result of a better understanding of the problem and the increasing availability of commercial forms of nitrogen, a rapid increase in the use of nitrogen fertilizers has taken place in the …
Geology Of The Weston Canyon Area, Bannock Range, Idaho, Clair N. Murdock
Geology Of The Weston Canyon Area, Bannock Range, Idaho, Clair N. Murdock
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The Weston Canyon area comprises the southern part of the Bannock Range and northwestern part of the Malad Range in southern Idaho. Geologic investigations of adjacent areas date from 1871. These investigations have led to detailed geologic reports that cover much of the Wasatch Range, Bear River Range, Malad Range, Portneuf Range, and Cache Valley. The geology of the southern part of the Bannock Range, however, has not been studied in detail, and it is the purpose of this investigation to map and describe the geology of the Weston Canyon area and to correlate it with previously described geology of …