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The Effects Of Deficiencies Of Certain Mineral Nutrients On The Activity And Various Properties Of Ribulose-1,5-Diphosphate Carboxylase From Barley (Hordeum Vulgare L.), Philip Alan Harrison Aug 1973

The Effects Of Deficiencies Of Certain Mineral Nutrients On The Activity And Various Properties Of Ribulose-1,5-Diphosphate Carboxylase From Barley (Hordeum Vulgare L.), Philip Alan Harrison

Theses and Dissertations

Barley plants grown in Mg, Mn, Zn and Cu deficient media were analyzed for specific activity, total activity and amount of RuDPCase present. Percent dry weight, as well as chlorophyll and soluble protein content were determined. All deficiencies caused lower chlorophyll and RuDPCase concentrations than occurred in the control. Soluble protein content, however, was higher in all deficient plants than in the control, either on a dry or a fresh weight basis. The addition of 18 μM Mn^2+ increased the activity of Mg^2+ containing RuDPCase preparations as much as 133% above normal. The specific activity of RuDPCase from Mg, Mn, …

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Fate And Metabolism Of Bas 290-H In A Model Ecosystem, Kuo-Mei Chang Aug 1973

Fate And Metabolism Of Bas 290-H In A Model Ecosystem, Kuo-Mei Chang

Theses and Dissertations

The use of chemicals to control economic pests has grown in this century both in the amount and the diversity of materials used (Headley and Lewis, 1967). About ten billion pounds of pesticides have been used in the United States since 1945. It is estimated that there are 340 million acres of cultivated lands in the Continental United States. Of this amount, approximately 119 million acres were sprayed with herbicides, 97 million acres were treated with insecticides and 25 million acres were treated with fungicides and other minor pesticides (Matsumura, 1972).

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Interaction Between Triiodothyronine (T₃) And Thyroxine (T₄) In The Chick And The Rat, Kurtis George Cornish Aug 1973

Interaction Between Triiodothyronine (T₃) And Thyroxine (T₄) In The Chick And The Rat, Kurtis George Cornish

Theses and Dissertations

The secretion of two hormones with identical function by the thyroid gland has been questioned, What is the relationship between these two hormones? Why does the thyroid secrete two hormones when either one can provide for all the activity of the thyroid (Greer, 1972). Little work has been done on the relationship between the two hormones. There is some evidence showing that thyroxine (T4) is deiodinated to triiouothyronine (T3) at the tissue level in mammals. Chambers (1970) found that there was a negative interaction between T4 and T3 when pharmacologic doses were administered to the rat. The present study was …

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Panel Discussion On J. Reuben Clark, Jr. November 21, 1972, Ray C. Hillam, Martin B. Hickman, James B. Allen, Neal A. Maxwell, Robert S. Jordan Jul 1973

Panel Discussion On J. Reuben Clark, Jr. November 21, 1972, Ray C. Hillam, Martin B. Hickman, James B. Allen, Neal A. Maxwell, Robert S. Jordan

BYU Studies

No abstract provided.

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J. Reuben Clark, Jr.: Under Secretary Of State, Lee H. Burke Jul 1973

J. Reuben Clark, Jr.: Under Secretary Of State, Lee H. Burke

BYU Studies

No abstract provided.

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J. Reuben Clark, Jr., And The United Nations, Stan A. Taylor Jul 1973

J. Reuben Clark, Jr., And The United Nations, Stan A. Taylor

BYU Studies

No abstract provided.

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Three New Species Of Palmoxylon From The Eocene Green River Formation, Wyoming, William D. Tidwell, David A. Medlyn, Gregory F. Thayn Jun 1973

Three New Species Of Palmoxylon From The Eocene Green River Formation, Wyoming, William D. Tidwell, David A. Medlyn, Gregory F. Thayn

Great Basin Naturalist

Silicified, upright axes of Palmoxylon are abundant in the Green River Formation in Eden Valley, Wyoming. Three new species of Palmoxylon, as well as the previously described Palmoxylon macginitiei Tidwell et al., were collected. These new species are P. edenense, P. contortum, and P. colei. They are compared to P. macginitiei and other anatomically similar Palmoxylon species. Palmoxylon edenense appears to be the most abundant species at this locality.

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Small Bones Of The Hypsilophodontid Dinosaur Dryosaurus Altus From The Upper Jurassic Of Colorado, Peter M. Galton, James A. Jensen Jun 1973

Small Bones Of The Hypsilophodontid Dinosaur Dryosaurus Altus From The Upper Jurassic Of Colorado, Peter M. Galton, James A. Jensen

Great Basin Naturalist

No abstract provided.

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Studies On Utah Stone Flies (Plecoptera), Richard W. Baumann Jun 1973

Studies On Utah Stone Flies (Plecoptera), Richard W. Baumann

Great Basin Naturalist

Questionable Utah distribution records are reviewed and new state records are given. The female of Capnia cygna Jewett is described and figured and an allotype ♀ designated. Detailed synonomies and nomenclatural notes are provided for Capnia vernalis (Newport), Utacapnia poda (Nebeker and Gaufin) and Oemopteryx fosketti (Ricker). Descriptions are given of the female, nymph, and egg of Isogenoides zionensis Hanson and an allotype ♀ designated. The male, nymph, and egg of Pictetiella expansa (Banks) are described and an allotype ♂ designated. Sweltsa gaufini, sp. nov., is described for the male, female, and egg stages and a holotype ♂ designated. Descriptions …

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Speciation In The Genus Sceloporus Sceloporus (Sauria, Iguanidae) As Determined By Cranial Osteology And Other Characters, Kenneth Rex Larsen May 1973

Speciation In The Genus Sceloporus Sceloporus (Sauria, Iguanidae) As Determined By Cranial Osteology And Other Characters, Kenneth Rex Larsen

Theses and Dissertations

Numerical statistical methods were used to analyse the species in the genus Sceloporus using cranial osteology, external meristic and numeric characters, karyology, display behavior and geographic distribution. A new phylogeny for the genus is proposed with three main branches or Groups: Group I, a primitive group, evolved from Uta, Urosaurus and Sator in Miocene times. This Group speciated from gadoviae in the south to merriami in the north and contains 7 species in 3 species groups. Group II arose from Group I and evolved from centrally located pictus in all directions throughout Mexico. It contains approximately 19 species in 5 …

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Jean Rodolphe De Salis, Switzerland And Europe. Essays And Reflections., Leo Schelbert May 1973

Jean Rodolphe De Salis, Switzerland And Europe. Essays And Reflections., Leo Schelbert

Swiss American Historical Society Newsletter

This book will be especially welcome to Swiss Americans who do not read German, yet are interested in keeping in touch with their country of origin or want to introduce it to their grown children. Ven Salis, widely known in Switzerland and beyond, can serve as a stimulating and sensitive guide to an understanding of the nature of the Swiss polity, of its past struggles, and of its present attempts at self-definition within the broader European and world community. A lucid and vivid style, well recreated in this translation, and a fair balance between controversial essay, disciplined historical sketch, and …

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Ulrich Braker, The Life Story And Real Adventures Of The Poor Man Of Toggenburg, Leo Schelbert May 1973

Ulrich Braker, The Life Story And Real Adventures Of The Poor Man Of Toggenburg, Leo Schelbert

Swiss American Historical Society Newsletter

Have you not sometimes wished to know in some detail how your (Swiss} ancestors, say of the 18th century, have lived, what kind of daily or unusual troubles they have faced, and what hopes and fears have sustained them? Derek Bowman's translation of t he autobiography of the "Poor Man of Toggenburg" makes just such a portrait available to American readers. It was painted by a writer who was unusual less in his external life-path than in his clarity of vision and in his power of description.

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History Of The Swiss American Historical Society, Heinz K. Meier May 1973

History Of The Swiss American Historical Society, Heinz K. Meier

Swiss American Historical Society Newsletter

The decade of the 1930's was a difficult time for most Americans with the depression blighting untold families and individuals. The Swiss Americans, like other ethnic groups, had an additional cause for concern inasmuch as the decade was characterized by isolationism in foreign relations and a wave of nativism at home. The introduction of immigration quotas in the 1920's indicated that the United States prepared itself to put obstacles in the way of free access to the country. Due to the depression the quotas were not even used up by most European countries. The "distant magnet" had lost much of …

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Full Issue May 1973

Full Issue

Swiss American Historical Society Newsletter

No abstract provided.

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The Idea Of A Mormon University, Arthur Henry King Apr 1973

The Idea Of A Mormon University, Arthur Henry King

BYU Studies

No abstract provided.

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Politics And Society: Anglo-American Mormons In A Revolutionary Land, Lamond Tullis Apr 1973

Politics And Society: Anglo-American Mormons In A Revolutionary Land, Lamond Tullis

BYU Studies

No abstract provided.

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Variations Between Copies Of The First Edition Of The Book Of Mormon, Janet Jenson Apr 1973

Variations Between Copies Of The First Edition Of The Book Of Mormon, Janet Jenson

BYU Studies

No abstract provided.

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The Effects Of Penicillin Upon The Fission Rate Of Dugesia Dorotocephala., John J. Fahsbender Apr 1973

The Effects Of Penicillin Upon The Fission Rate Of Dugesia Dorotocephala., John J. Fahsbender

Theses and Dissertations

Planaria (class Turbellaria) are the highest life forms which exhibit fission (Hyman, 1951). The laboratory planarian, Dugesia, lives in lakes, ponds, streams and springs, where it occupies bottom habitats. Fissioning is an asexual mode of reproduction. The fission plane is usually transverse, forming behind the pharynx, and separation appears to be dependent upon locomotion (Curtis, 1902). The posterior half of the worm adheres to the substratum while the anterior half continues to move forward until the worm snaps in two. Each half then regenerates the missing parts, forming two new smaller worms.

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Development Of Standard Procedures For Determination Of [Delta]G° (K), [Delta]H° And [Delta]S° Values Via Potentiometric And Calorimetric Titration Techniques, Jack Hugh Ruckman Apr 1973

Development Of Standard Procedures For Determination Of [Delta]G° (K), [Delta]H° And [Delta]S° Values Via Potentiometric And Calorimetric Titration Techniques, Jack Hugh Ruckman

Theses and Dissertations

Standard computer techniques were developed for computation of ΔG° values from potentiometric titration data and ΔH° values from calorimetric titration data. The procedures developed can be used for any systems having the general equations HA = W^+ + A^- ; H_2A = 2H^+ + A^2- ; and H_3A = 3H^+ + A^3-, where the proton ionizations may be consecutive or simultaneous. The thermodynamic values ΔG°(K), ΔH° and ΔS° were determined for the ionization of protons from the protonated compounds methionine (-NH_3^+ group only), phosphoethanalomine and phosphoserine. The compounds studied were selected because they contain one, two and three ionizable protons …

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The Determination Of Thiamin And Its Derivatives In Brain Tissue Of Control, Thiamin-Deficient, Oxythiamin- And Pyrithiamin-Treated Rats, David S. Murdock Apr 1973

The Determination Of Thiamin And Its Derivatives In Brain Tissue Of Control, Thiamin-Deficient, Oxythiamin- And Pyrithiamin-Treated Rats, David S. Murdock

Theses and Dissertations

The determination of total thiamin, free thiamin, thiamin di phosphate (TDP) plus thiamin triphosphate (TTP), and total α- hydroxyethylthiamin (HET) levels in rat brain in control, deficient, oxythiamin- (OTH) and pyrithiamin- (PTH) treated rats was accomplished. It was found that the TDP + TTP/thiamin ratio observed in the thiamin-deficient, OTH- and PTH-treated rats was constant and did not differ from the ratio observed in the control rat brains. The brain levels of TDP + TTP decreased to 39% and 12% of the control thiamin levels in deficient and PTH-treated rats respectively. The brain HET and TDP + TTP levels of …

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Distribution And Relationships Of Utah Brome Grasses In Western North America, Jerry B. Anderson Apr 1973

Distribution And Relationships Of Utah Brome Grasses In Western North America, Jerry B. Anderson

Theses and Dissertations

A considerable amount of study material has beccme available since the revision of the genus in 1900 by Shear, and the revision of the section Bromopsis in 1952 by Wagnon. A number of cytological studies have been done in recent years; and Wagnon's work pointed out the need for a comprehensive study of the entire genus. This study is a taxonomic revision of the Genus Bromus for the State of Utah, and contains illustrations and descriptions of the species; synonomy; distribution maps; and discussions of many of the important aspects of the economics, ecology, and historical treatment. I have recognized …

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The Purification And Characterization Of Cytochrome B₅ From Porcine Kidney, M. Dean Klingler Apr 1973

The Purification And Characterization Of Cytochrome B₅ From Porcine Kidney, M. Dean Klingler

Theses and Dissertations

A soluble form of cytochrome b_5, with a 413/280 nm ratio of nearly unity, has been isolated and purified from porcine kidney using fractional precipitation, ion exchange resins, and gel filtration procedures. The cytochrome b_5 shows heat stability up to 50° and is stable in the pH range 6.0 to 8.5. The oxidized protein exhibits an absorption maximum at 413 nm, while the reduced form shows three peaks: 423, 526, 556 nm. Molecular weight determinations have given variable results, suggesting the possibility of a polymer composed of four and eight units of a 13,500 molecular weight protomer. This study has …

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|Ni.|Pa Calorimetric Study Of The Heat Of Ionization Of Water At 10 And 40°C, And,|Nii.|Pa Calorimetric Determination Of The Heat Of Reaction Of Tris (Hydroxymethyl) Aminomethane (Tham) With Hydrochloric Acid In Aqueous Solution At 10, 25, And 40°C, Griffith Lyn Kimball Apr 1973

|Ni.|Pa Calorimetric Study Of The Heat Of Ionization Of Water At 10 And 40°C, And,|Nii.|Pa Calorimetric Determination Of The Heat Of Reaction Of Tris (Hydroxymethyl) Aminomethane (Tham) With Hydrochloric Acid In Aqueous Solution At 10, 25, And 40°C, Griffith Lyn Kimball

Theses and Dissertations

The heat of neutralization, ΔH_-N, of perchloric acid with sodium hydroxide has been determined at 10 and 40° in a low ionic strength, μ, region using a nonisothermal, constant-temperature-environment solution calorimeter. Correction of the data to infinite dilution by extrapolation of a plot of ΔH_-N vs μ^0.5 gives values at zero ionic strength for the heat of ionization of water of 14.216 and 12.695 kcal/mole, respectively, at 10 and 40° . The data are correlated with those of earlier workers to give an equation allowing the calculation of the heat of ionization of water at zero ionic strength over the …

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⁷Li(D,P)⁸Li Excitation Function :|Be[Subscript D] = 0.623 Mev To 1.968 Mev, Albert E. Schilling Apr 1973

⁷Li(D,P)⁸Li Excitation Function :|Be[Subscript D] = 0.623 Mev To 1.968 Mev, Albert E. Schilling

Theses and Dissertations

In this study the excitation function for the ^7Li(d,p)^8Li reaction is determined at incident deuteron energies ranging from 0.623MeV to 1.968MeV by counting the delayed alpha-particles as a result of the ^8Li beta decay. This excitation function reveals resonances at 0.777±0.012MeV and 1.031±0.015MeV with cross sections of 202±9mb and 188±8mb respectively. The uncertainty in the cross section values was due to three independent sources of error within this experiment, the solid angle, the ^8Li half-life, and the target (LiF) thickness. The uncertainty in the energy values was determined from an energy calibration of the accelerator used in this study. Resonances …

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Transient Convective Heat Transfer In Closed Containers During And After Gas Injection, Jennings Donell Means Apr 1973

Transient Convective Heat Transfer In Closed Containers During And After Gas Injection, Jennings Donell Means

Theses and Dissertations

This dissertation presents experimental data correlations for the spatially - averaged convective heat transfer coefficient for thin walled closed containers during and after gas injection. The different modes of heat transfer were identified, and correlations were made for each. Correlations are presented for the injection period, post-top injection, post-bottom injection, post- tangential, post-radial injection, and post-ejection heat transfer for various tank geometries. Of special significance are the very high heat transfer rates that were shown to be present in some cases immediately after injection. Heat transfer rates were shown to be, for a short period, up to almost two orders …

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The Design And Analysis Of An Electro-Pneumatic Signal Converter, Richard K. Thornton Apr 1973

The Design And Analysis Of An Electro-Pneumatic Signal Converter, Richard K. Thornton

Theses and Dissertations

In the field of process control it is desirable to study dynamic characteristics such as frequency response and distortion when determining just how equipment is to be controlled. Pneumatic controllers, transmitters, control valves, etc., all have dynamic behaviors which can be expressed mathematically as transfer functions. Each component plays an important role in determining the entire system behavior. Frequency response is one technique used in developing a component’s transfer function. By driving a device with a sinusoidal signal of fixed amplitude and frequency the output amplitude and phase shift are measured and compared with that of the input. Varying the …

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The Priesthood Reform Movement, 1908-1922, William Hartley Apr 1973

The Priesthood Reform Movement, 1908-1922, William Hartley

BYU Studies

No abstract provided.

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N. L. Nelson And The Mormon Point Of View, Davis Bitton Apr 1973

N. L. Nelson And The Mormon Point Of View, Davis Bitton

BYU Studies

No abstract provided.

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Thermodynamic Equilibrium Formation Constants And Molal Concentrations Of The Complexed Mercury-Containing Species Of Mercuric Chloride In Added Hydrochloric Acid And Methanol-Water Solvent Mixtures, Karl Jennings Walker Apr 1973

Thermodynamic Equilibrium Formation Constants And Molal Concentrations Of The Complexed Mercury-Containing Species Of Mercuric Chloride In Added Hydrochloric Acid And Methanol-Water Solvent Mixtures, Karl Jennings Walker

Theses and Dissertations

Saturated solutions of mercuric chloride in different methanol-water and hydrochloric acid solvent mixtures were equilibrated at 25.00 ± 0.01°C. Total mercury and free chloride concentrations were determined by analytical procedures and the data were analyzed with the aid of the computer. Tabulated below are the results of this study: [--see thesis for table--]

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Finite Conductance Element Method Of Conduction Heat Transfer, E. Clark Lemmon Apr 1973

Finite Conductance Element Method Of Conduction Heat Transfer, E. Clark Lemmon

Theses and Dissertations

One of the basic goals in engineering is to formulate models which will provide a means for analytically predicting observed phenomenon. For some time, the partial differential equations describing the steady state and transient conduction of heat within a solid have been available. However, the straight forward use of these equations is often restricted due to the surface geometry of the solid. If the surface geometry is at all irregular, exact solutions will in general not exist. In that case, a solution is sought by some approximate numerical technique. The two techniques most often used are the finite difference method …

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