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Multi-Interval Sturm-Liouville Transform And Its Applications, Pau-Chang Lu

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

The method of finite integral transforms (Eringen, 1954; Churchill, 1955; Sneddon, 1955; Cinelli, 1965; Roettinger, 1947) has gradually replaced the classical method of separation of variables. This is undoubtedly due to its compact and almost drill-like formalism. Wherever applicable, it has also replaced the Laplace transform with the resulting avoidance of cumbersome contour integrals in the inversion.

In this paper, we are concerned with solving, by such a transformational or operational method, the following general boundary-value problem:

L_i (f_i) + M (f_i) = g_i (x), C_i-l

a₁f₁(Co) - a …

Detection Of Energetic Heavy Ions, Robert Katz, S. C. Sharma, Mehdi Homayoonfar

Robert Katz Publications

The delta-ray theory of track structure, applied earlier to such 1-or-more hit detection systems as the inactivation of dry enzymes and viruses, the NaI(Tl) scintillation counter, and nuclear emulsion, is extended to the silver activated phosphate glass dosimeter, the LiF thermoluminescent dosimeter, the creation of free radicals in solid biological substances, solid and liquid organic scintillators, and the ferrous sulfate (Fricke) dosimeter. The response of these systems to both gamma-rays and heavy ions is characterized by two parameters: 1) D_γ³⁷, the dose of gamma-rays at which 37% of the sensitive elements remain unaffected by the radiation, and …

Late Quaternary Eustatic Sea-Level Changes Along The Malibu Coast, Los Angeles County, California, Peter W. Birkeland

United States Geological Survey: Staff Publications

Late Quaternary relative sea-level changes along the Malibu coast can be deciphered by study of geomorphic features and marine and associated stream deposits. Evidence for such changes includes (a) stream downcutting in large valleys during low stands of sea level, (b) stream aggradation in the same valleys during high stands of sea level, and (c) marine shoreline angles whose altitudes coincide with the tops of valley-fill stream deposits. This evidence, and open-system uranium-series dates for shells from the Corral and Dume terrace deposits, provide a time scale for certain sea-level changes. Evidence from other …

Late Paleozoic Trilobites From Southeastern Nebraska, R. K. Pabian, J. A. Fagerstrom

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Solubility Of (Β-Glucosidase In Homogenates Of Sweetclover Leaves And Bean Hypocotyls, T. A. Jaynes, Francis A. Haskins, H. J. Gorz, A. Kleinhofs

Department of Agronomy and Horticulture: Faculty Publications

In a recent paper Eberhart and Beck (4) suggested that the aryl-,β-glucosidase of Neurospora conidia is a mural enzyme. Similarly, Nevins (11) reported that ,β-glucosidase is strongly associated with cell walls during extraction of bean hypocotyls at pH 4.6 and suggested that this enzyme is wall-bound in situ, and Keegstra and Albersheim (9) noted that β-glucosidase could be effectively washed from the surface of sycamore cells grown in liquid culture. On the basis of histochemical evidence, Ashford (1) suggested that β-glucosidase in corn roots is associated with a reticulate network of strands and particles, and Ashford and McCully (2) …

Oxidation Of Phenylpyruvate By Sweetclover Peroxidase, T. A. Jaynes, Francis A. Haskins, H. J. Gorz

Department of Agronomy and Horticulture: Faculty Publications

Sweetclover (Melilotus alba Desr.) contains a soluble enzyme which oxidizes phenylpyruvate with the addition of either a natural cofactor or Mn²⁺ and dichlorophenol. The final product of oxidation has not been identified. Phenylpyruvate oxidation is catalyzed also by horseradish peroxidase, and the oxidation is enhanced by the natural cofactor from sweetclover or Mn²⁺ and dichlorophenol. After fractionation of sweetclover homogenates by DEAE-cellulose chromatography, two peaks of peroxidase activity (pyrogallol as substrate) are apparent; both peaks also oxidize phenylpyruvate. A third peak, specific for phenylpyruvate oxidation, also is apparent. The Cu/cu and B/b allelic pairs, which influence phenolic …

Form And Level Of Coumarin In Deer's Tongue, Trilisa Odoratissima, Francis A. Haskins, H. J. Gorz, R. C. Leffel

Department of Agronomy and Horticulture: Faculty Publications

Fresh leaves of deer’s tongue contain large quantities (more than 10% of the dry weight, in some cases) of o-hydroxycinnamic acid (o-HCA). Both cis- and trans-o-HCA are present, and both isomers exist in the fresh tissue predominantly as glucosides. Cured deer’s tongue leaves contain relatively high levels of coumarin and lower amounts of o-HCA glucosides. It is probable that during the curing process cis-o-HCA glucoside is hydrolyzed by an endogenous β-glucosidase, and that the liberated cis-o-HCA lactonizes spontaneously to form coumarin.

The Identification And Differentation Of Selected Professional Competencies For Agricultural Educators, Ronald E. Stoller

Department of Agricultural Leadership, Education, and Communication: Dissertations, Theses, and Student Research

Purpose of the Study The primary purpose of the study was to determine whether a common core of professional competancies for agricultural educators could be identified. The study was also designed to identify and differentiate professional competencies most important for individual respondent groups. Assumption It Was assumed that all agricultural educators were proficient in the necessary technical agricultural subject matter such as, agronomy, animal science, to perform their job. Only selected professional competencies as they relate to the pedagogy for teaching were studied, Procedure A study questiormaire containing 147 professional cOl'lpetencies was developed and tested with the aid of a …

Whole Issue Nebraska Bird Review (December 1971) 39(4)

Nebraska Bird Review

TABLE OF CONTENTS

A Comparison of Nesting Cover Utilized by Pheasants and Waterfowl .................66

First Specimen of Poor-will from Lancaster County A Summary of Poor-will Migration .................70

1971 Fall Field Day................. 71

The Dalton, Harrisburg, Kimball Triangle................. 72

Breeding Record of the Long-billed Marsh Wren from Lancaster County .................74

Revised Status of the Caspian Tern in Nebraska - A Summer Occurrence Record for Lancaster County .................75

Notes .................76

Index of Volume XXXIX .................78

The Prairie Naturalist Vol. 3, Nos. 3 And 4. September-December, 1971

The Prairie Naturalist

EDITORIAL: Badlands-Old and New ▪ Paul B. Kannowski

SEASONAL INVESTIGATIONS OF ALGAE FROM DEVILS LAKE, NORTH DAKOTA ▪ Richard Verch and Dean W. Blinn

THE VASCULAR FLORA OF PEMBINA COUNTY, NORTH DAKOTA ▪ Rays E. Willenbring and William T. Barker

LET'S EAT WILD ▪ Alan M. Cvancara

SURF SCOTER IN NORTH DAKOTA ▪ Harold A. Kantrud

SNOW GOOSE-CANADA GOOSE HYBRIDS ▪ David C. McGlauchlin

NOTES

Cowbird parasitism of an upland plover nest ▪ Kenneth F. Higgins

Birds sighted within one hour from one observation point in Burleigh County, North Dakota ▪ William A. Buresh

Golden-winged warbler in Burleigh County, North …

Response Of Fraxinus Pennsylvanica M. Provenances To Daylength And Temperature, Cheng-Chun Ying

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.

Survival Of Some Freshwater Fishes In The Alkaline Eutrophic Waters Of Nebraska, D. B. Mccarraher

Nebraska Game and Parks Commission: Staff Research Publications

Of 14 species of freshwater fishes held in cages in one or more of 13 alkaline lakes and ponds in Nebraska, few species survived more than a month where carbonate alkalinity, mostly as compounds of Na₂C0₃ and KC0₃, was above 300 mg/liter. Of the 14 species tested, Sacramento perch (Archoplites interruptus), fathead minnow (Pimephales promelas), northern pike (Esox lucius), and the black bullhead (lctalurus melas), were the most tolerant of alkaline environments. Most centrachid fishes except A. interruptusand the green sunfish (Lepomis cyanel!us), did …

Telescopic Observation Of The Moon As A Means For Observing Migration Of The Army Cutworm, Chorizagrotis Auxiliaris (Lepidoptera: Noctuidae), K. P. Pruess, Neva C. Pruess

Department of Entomology: Faculty Publications

Nocturnal insect activity was observed through telescopes focused on the moon. Flight direction was computed and methods were developed for estimating height and determining vertical distribution. Total density was correlated with light-trap catches; effective range of a light-trap was about 7 meters. Species identification was impossible but the method was selective for larger and higher-flying insects. Characteristics of insect activity observed during periods of army cutworm abundance indicate that it orients to the west during spring migration. Activity and altitude of flight were modified by wind direction and velocity, but flight direction during migration was independent of wind.

Second Specimen Of Oryzomys Dimidiatus, Hugh H. Genoways, J. Knox Jones Jr.

University of Nebraska State Museum: Mammalogy Papers

The species Oryzomys dimidiatus was originally named and described by Thomas (Annals of the Museum of Natural History, series 7, 15: 584-591, 1905) as a member of the genus Nectomys on the basis of a single specimen from the Rio Escondido, 7 miles below Rama, Nicaragua (approximately 1 km. S and 8½ km. E Ranla, 20 m, Zelaya), obtained by W. G. Palmer on November 5, 1904. Although there has been speculation on the relationships of this taxon (currently regarded as the only member of the subgenus Micronectmays, genus Oryzomys--see Hershkovitz, Journal of Mammalogy, 51: 789-794, 1970, …

Influence Of Iron Supply On Peroxidase Activity And Peroxidase Isozymes In Corn (Zea Mays), R. L. Ulmer, Francis A. Haskins, W. R. Akeson

Department of Agronomy and Horticulture: Faculty Publications

Plants of Oh43 X Wf9 corn (Zea mays L.), grown in a sand culture system, were watered daily with nutrient solution containing 0.025, 1.25, or 2.5 ppm Fe. Plants also were grown in a soil-sand mixture. Leaf extracts were assayed quantitatively for peroxidase activity, and samples of the extracts were subjected to gel electrophoresis. A positive relationship was observed between Fe supply and proxidase activity. Numerous peroxidase isozymes were detected by gel electrophoresis. As judged by intensity of the bands, all isozymes appeared to be infIuenced by Fe supply.

Water Resources News, Volume 3, No. 8, October 1971

Water Current Newsletter

WRC Report on Sharing Financial Responsibility of Water Development
Ground-water Quality Simulator
Environmental Impact Evaluation System Proposed
Industry-Government Oil Spill Conference Slated for 1973
National Urban Water Resources Research Program Report Published
River Development to Aid Rural Areas Should be "National Goal"
Water Circulation in San Francisco Bay Described
Discount Rate Raised to 5 3/8 Percent
Cornell Agricultural Waste Conference
Lawsuit Challenges Tennessee -- Tombigbee Waterwater
Corps of Engineers and Public Involvement

Some Adult Digenetic Trematodes In Striped Mullet From The Northern Gulf Of Mexico, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Morphological information is given on the adults of four trematodes from Mugil cephalus from estuarine waters of the northern Gulf of Mexico with complementary information from specimens from Georgia. Lasiotocus glebulentus sp. n., from the Gulf, possesses a submedian genital pore and apparently differs from all known species by containing several large concretions in the excretory vesicle. Data are presented for Hymenocotta manteri Overstreet, 1969, Saccocoelioides beauforti (Hunter and Thomas, 1961) comb. n., and Dicrogaster fastigatus Thatcher and Sparks, 1958. These three species are now known from both the Gulf of Mexico and the western Atlantic coast. Carassotrema mugilicola Shireman, …

Insect Flagellates From Feces And Gut Contents Of Four Genera Of Lizards, Norman R. Dollahon, John J. Janovy Jr.

John J. Janovy, Jr. Publications

During investigations of experimental leishmaniasis in American lizards, insect flagellates of at least two genera were isolated from freshly deposited fecal material and gut contents of two genera of Central American lizards (Basilicus and Ameiva).

It appears to us that some of the conclusions regarding the biology of certain flagellates described as reptilian leishmanias must be accepted with caution. Insect flagellates do persist in the lizard intestine for several days, and it is entirely possibly that some reptilian "leishmanias," particularly those described with gut involvement, such as Leishmania henrici, may actually be insect flagellates.

Whole Issue Nebraska Bird Review (September 1971) 39(3)

Nebraska Bird Review

TABLE OF CONTENTS

Status of the Common Loon in Nebraska: A Summer Occurrence in Lancaster County................. 42

1971 (Forty-sixth Spring Migration and Occurrence Report................. 45

Some Interesting Summer Bird Records for Lancaster County in 1970 .................58

Activities of the Yellow-bellied Sapsucker in the Kearney, Nebraska Area .................60

Notes................. 62

In Memoriam .................64

Evaluation Of Cross-Fertilization In Forage Crops, Herman J. Gorz, Francis A. Haskins

Department of Agronomy and Horticulture: Faculty Publications

In the improvement of forage crop varieties knowledge of the extent of cross-fertilization is of value for (1) determining the extent and randomness of crossing in breeding procedures, (2) estimating varietal changes due to contamination and mechanical mixtures, and (3) evaluating effects of cross-fertilization in the development and production of synthetic and hybrid combinations. Genetic markers can aid greatly in the evaluation of cross·fertilization, and thus in the development and production of new varieties. Ideally, markers should be distinctive and readily detected in the seedling stage, conditioned by a single dominant gene with complete penetrance, and have no adverse effects …

Cross-Fertilization In Melilotus Alba, Herman J. Gorz, Francis A. Haskins

Department of Agronomy and Horticulture: Faculty Publications

Two simply inherited characters, o-hydroxycinnamic acid (o-HCA) content and β-glucosidase activity, were used as genetic marker s in studying the frequency of cross-fertilization in Melilotus alba Desr. Based on the o-HCA marker, the effective cross-fertilization averaged 58% for two harvest years in a biennial population and 67% in a 1-year study with an annual population. Use of the β-glucosidase marker provided a cross-pollination estimate of 72% in the biennial population. The extent of natural crossing in sweetclover appears to be sufficient to restore normal vigor in the production of varieties synthesized from selected inbred lines.

Opinions Of School Administrators Concerning Selected Aspects Of The Program Of Vocational Agriculture In Nebraska, Larry L. Viterna

Open Access Master's Theses (through 2010)

A lack of available evidence in Nebraska to formulate decisions based on the opinions of school administrators, regarding programs in agricultural education at the high school level, prompted the investigator to propose a study which was designed to obtain the opinions of high school administrators regarding selected aspects of the program of vocational agriculture in Nebraska.Additionally the study was designed to then present those opinions in a form that would be considered useful to a variety of state and local supervisors of vocational agriculture programs as well as teachers and educators.This study was limited to superintendents and principals in the …

Notes On The Anomalurids Of Rio Muni And Adjacent Areas, Clyde Jones

United States Fish and Wildlife Service: Publications

Information obtained from specimens collected and observed in Rio Muni and adjecent areas is presented for three species of anomalurids. Data available on distribution, habitat, and habits are summarized and discussed with regard to the ecological relationships of three species.

Comparison Of Estimated Daughter Superiority From Pedigree Records With Daughter Evaluation, L. Dale Van Vleck, H. W. Carter

Department of Animal Science: Faculty Publications

Daughter superiorities of 240 Holstein bulls of the American Breeders Service and Eastern Artificial Insemination Cooperative (EAIC) were estimated from records of paternal sisters of the sire, dam's records, and records of daughters of the maternal grandsire. Estimated daughter superiority (EDS) was then compared with the U.S. Department of Agriculture's predicted difference for American Breeders Service bulls and with the Northeast Sire Comparison for EAIC bulls. The regression equation on estimated daughter superiority was [-84 + .561(EDS)] kg for American Breeders Service bulls and [-227 + .654(EDS)] kg for EAIC bulls. The response is not as large as theoretically predicted …

Estimation Of Heritability Of Threshold Characters, L. Dale Van Vleck

Department of Animal Science: Faculty Publications

Many traits of dairy cattle such as disease resistance and type breakdown scores may have an underlying distribution of values which are approximately normal but must be measured on a yes or no basis. Theory from literature suggests that heritability estimated from such binomial data is only z²/p(1-p) as large as heritability if it could be measured on the normal scale where z is the ordinate on the normal distribution at the threshold point corresponding to a fraction p of the population having the character. Data were generated from a pseudo-normal distribution to test this theory for estimates …

Agricultural Experiment Station News July 1971

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – June 1971

On The Ecology And Distribution Of Echinococcus Spp. (Cestoda: Taeniidae), And Characteristics Of Their Development In The Intermediate Host. Ii. Comparative Studies On The Development Of Larval E. Multilocularis Leuckart, 1863, In The Intermediate Host, Masashi Ohbayashi, Robert L. Rausch, Francis H. Fay

Harold W. Manter Laboratory of Parasitology: Faculty Publications

This paper reports the results of a comparative study of the development of the larval Echinococcus multilocularis Leuckart, 1863), and associated tissue reaction in naturally and experimentally infected mammals representing 31 species. The histogenesis of the larval cestode was traced in detail in arvicoline rodents of several species, and interspecific differences were defined.

In arvicoline rodents, the developing larva exhibited host-specific characteristics within about a month after infection was established. The tissue reaction in Microtus oeconomus was characterized by the production of a large quantity of detritus around the larva, and by the formation of a thick epithelioid zone. In …

Whole Issue Nebraska Bird Review (June 1971) 39(2)

Nebraska Bird Review

Table of Contents

Turkey Vulture Nesting Records for Nebraska - A New Record for Sheridan County ................19

A Lancaster County Record for the Surf Scoter ................21

1970 (Thirteenth) Fall Occurrence Report................22

The Seventieth Annual Meeting................ 36

Notes ................37

Book Review ................40

The Prairie Naturalist Volume 3, No.2. June, 1971

The Prairie Naturalist

EDITORIAL: Environmental Rights ▪ Paul B. Kannowski

RIVER BASINS PLANNING ▪ H. A. Hendrickson

WATER RESOURCE PLANNING GONE AMUCK ▪ Charles H. Stoddard

THE INTERACTION OF CITIZENS' GROUPS AND GOVERNMENT AGENCIES WITH RESPECT TO ENVIRONMENTAL PROBLEMS ▪ Robert L. Burgess

WORDS AND MEANINGS ▪ Paul T. Crary

ENFORCEMENT OF NORTH DAKOTA ENVIRONMENTAL LAWS AND REGULATIONS ▪ Robert E. Beck

BIRDS OBSERVED IN NORTH DAKOTA DURING THE WINTER OF 1970-71 ▪ John T. Lokemoen and Paul E. Springer

STATUS OF CLARK'S NUTCRACKER IN NORTH DAKOTA ▪ Lewis W. Oring and Robert W. Seabloom

WINGED ANTS AS FISH FOOD ▪ Charles H. …

Glaucivermis Spinosus Gen. Et Sp. N. (Digenea: Zoogonidae) From The Southern Kingfish, Menticirrhus Americanus (Linnaeus), In The Coastal Waters Of Mississippi, Robin M. Overstreet

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Glaucivermis spinosus is described from the intestine and pyloric ceca of Menticirrhus americanus collected near Ocean Springs, Mississippi, in the Gulf of Mexico and adjacent waters. The genus is characterized primarily by having a preacetabular intestinal bifurcation, a preacetabular sinistral genital pore, a bilobed vitellarium, a swelling of Laurer's canal to form the seminal receptacle, and tandem to diagonal testes. It is most similar to the genus Diphtherostomum from which it differs primarily in the arrangement of the testes.