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Articles 15511 - 15540 of 16012
Full-Text Articles in Entire DC Network
A Comparison Of Methods For Differentiating Sources Of Fecal Pollution Of Water, Russell S. Fraser
A Comparison Of Methods For Differentiating Sources Of Fecal Pollution Of Water, Russell S. Fraser
Biology
Winslow and Palmer (1910) stated: "Sanitarians are continually seeking and seeking in vain, for some criterion by which sewage pollution of human origin may be distinguished from surface wash and agricultural land," and conclude their study of intestinal streptococci by remarking that: "...the use of mannite broth as a differential test for streptococci of human origin would seem sufficiently promising to warrant further study."
The Effect Of Injected Radioactive Phosphorus On Some Phases Of Reproduction In The Albino Rat, Arland E. Olson
The Effect Of Injected Radioactive Phosphorus On Some Phases Of Reproduction In The Albino Rat, Arland E. Olson
Biology
Damage to the germinal tissue of the ovary by radiation was reported in 1905 by Halberstaedter and by Bergonie and Tribondeau (2). These workers stated only that X-irradiation of the ovary injured the organ and resulted in a marked decrease in size. In 1913 Lacassagne (2) reported the effects of X-irradiation on the ovary of the rabbit. After intensive study he reported that the ovary might be made sterile for a time but that recovery could take place. Primitive ova not killed at the time of irradiation would develop, and the animal could give birth to living young. Since these …
Factors Affecting The Establishment And Spread Of The Bullfrog Rana Catesbeiana Shaw In Utah And Southern Idaho, Vance Demont Walker Jr.
Factors Affecting The Establishment And Spread Of The Bullfrog Rana Catesbeiana Shaw In Utah And Southern Idaho, Vance Demont Walker Jr.
Biology
The bullfrong Rana catesbeiana Shaw, the largest of the American frogs, is not natural to Utah, but has been introduced into several areas within the last 3 decades. Most people of Utah have never heard of bullfrogs, and fewer have seen them. The bullfrog is so different from the little leopard frog Rana Pipiens, that people who know the latter, cannot comprehend a frog having such a giant size.
The Effect Of Partial Sterilization Of Soil With Ethylene Dibromide Upon The Microbial Activities Of The Soil, Robert E. Lee
The Effect Of Partial Sterilization Of Soil With Ethylene Dibromide Upon The Microbial Activities Of The Soil, Robert E. Lee
Biology
The use of ethylene dibromide to control nematodes and wireworms in Utah soils where sugar beets and potatoes are grown has become an accepted practice. Where this soil fumigant has been used a greater plant growth and an increase in crops has been noted. This increased yield of crops has occurred following its use in the Lewiston area of Cache Valley. We have reason to believe that this increase is due to stimulation of beneficial soil microorganisms, as has been shown when older soil fumigants such as carbon disulphide and toluene have been used.
The Effect Of Partial Sterilization Of Soil With Ethylene Dibromide Upon The Microbial Activities Of The Soil, Robert E. Lee
The Effect Of Partial Sterilization Of Soil With Ethylene Dibromide Upon The Microbial Activities Of The Soil, Robert E. Lee
Biology
The use of ethylene dibromide to control nematodes and wireworms in Utah soils where sugar beets and potatoes are grown has become an accepted practice. Where this soil fumigant has been used a greater plant growth and an increase in crops has been noted. This increased yield of crops has occurred following its use in the Lewiston area of Cache Valley. We have reason to believe that this increase is due to stimulation of beneficial soil microorganisms, as has been shown when older soil fumigants such as carbon disulphide and toluene have been used.
Factors Affecting The Establishment And Spread Of The Bullfrog Rana Catesbeiana Shaw In Utah And Southern Idaho, Vance Demont Walker Jr.
Factors Affecting The Establishment And Spread Of The Bullfrog Rana Catesbeiana Shaw In Utah And Southern Idaho, Vance Demont Walker Jr.
Biology
The bullfrong Rana catesbeiana Shaw, the largest of the American frogs, is not natural to Utah, but has been introduced into several areas within the last 3 decades. Most people of Utah have never heard of bullfrogs, and fewer have seen them. The bullfrog is so different from the little leopard frog Rana Pipiens, that people who know the latter, cannot comprehend a frog having such a giant size.
The Effect Of Injected Radioactive Phosphorus On Some Phases Of Reproduction In The Albino Rat, Arland E. Olson
The Effect Of Injected Radioactive Phosphorus On Some Phases Of Reproduction In The Albino Rat, Arland E. Olson
Biology
Damage to the germinal tissue of the ovary by radiation was reported in 1905 by Halberstaedter and by Bergonie and Tribondeau (2). These workers stated only that X-irradiation of the ovary injured the organ and resulted in a marked decrease in size. In 1913 Lacassagne (2) reported the effects of X-irradiation on the ovary of the rabbit. After intensive study he reported that the ovary might be made sterile for a time but that recovery could take place. Primitive ova not killed at the time of irradiation would develop, and the animal could give birth to living young. Since these …
The Effect Of Injected Radioactive Phosphorus On Some Phases Of Reproduction In The Albino Rat, Arland E. Olson
The Effect Of Injected Radioactive Phosphorus On Some Phases Of Reproduction In The Albino Rat, Arland E. Olson
Biology
Damage to the germinal tissue of the ovary by radiation was reported in 1905 by Halberstaedter and by Bergonie and Tribondeau (2). These workers stated only that X-irradiation of the ovary injured the organ and resulted in a marked decrease in size. In 1913 Lacassagne (2) reported the effects of X-irradiation on the ovary of the rabbit. After intensive study he reported that the ovary might be made sterile for a time but that recovery could take place. Primitive ova not killed at the time of irradiation would develop, and the animal could give birth to living young. Since these …
A Comparison Of Methods For Differentiating Sources Of Fecal Pollution Of Water, Russell S. Fraser
A Comparison Of Methods For Differentiating Sources Of Fecal Pollution Of Water, Russell S. Fraser
Biology
Winslow and Palmer (1910) stated: "Sanitarians are continually seeking and seeking in vain, for some criterion by which sewage pollution of human origin may be distinguished from surface wash and agricultural land," and conclude their study of intestinal streptococci by remarking that: "...the use of mannite broth as a differential test for streptococci of human origin would seem sufficiently promising to warrant further study."
Effects Of Season, Spacing And Intensity Of Seeding On Emergence And Survival Of Four Wheatgrass Species In Central Utah, Edwin B. Abbott
Effects Of Season, Spacing And Intensity Of Seeding On Emergence And Survival Of Four Wheatgrass Species In Central Utah, Edwin B. Abbott
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Rehabilitation of deteriorated and abused range lands is being accomplished with greater success each year by the aid of better methods of seeding which include seedbed preparation, intensities of seeding, implements for planting and improved methods of eliminating competition. Much more information is needed, however, in order to recommend suitable methods and species for seeding various vegetation types and sones with reasonable reliability. Throughout the arid and semi-arid range lands, moisture is the principal factor limiting satisfactory seedling establishment. Special attention should therefore be given to more efficient utilization of the moisture supply. Closely related species or species with similar …
A Public Opinion Survey Of Ogden City Schools, Nolan R. Taylor
A Public Opinion Survey Of Ogden City Schools, Nolan R. Taylor
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Free men cannot be taught properly by slaves; courageous citizens cannot be properly educated by scared hired men. (1)
In Ogden, Utah, education is big business. With capital assets of approximately $8,000,000, a current budget of $3,065,000, a staff of 570 full-time employees, and an enrollment of 12,650 students (5), education ranks high insofar as its effects are felt by the citizenry of the community.
The administrative staff of Ogden schools feel the necessity of keeping informed on current opinions of school patrons concerning their schools. Being employed by the public, they are servants of the public; and the degree …
Relative Curricular Emphasis In Some Utah High Schools During The 1941-1951 Years, Edward W. Payne
Relative Curricular Emphasis In Some Utah High Schools During The 1941-1951 Years, Edward W. Payne
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
To have a sound and complete philosophy of education is a relative must for all people concerned with the teaching of children. Fortunate is the school whose administration and faculty have in common a functional definition of the term "curriculum" and its place in their total philosophy of education. The school program of only a few decades ago consisted of the strict disciplinary type of teaching, with only a few available subjects which were intended to develop the total capacities of the student. The new philosophy recognizes the variation in students as individuals. One must not assume that there is …
A Study Of The Campus Recreation At Utah State Agricultural College, Tod V. Carlini
A Study Of The Campus Recreation At Utah State Agricultural College, Tod V. Carlini
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The importance and growth of campus recreation is being felt by leaders throughout the country. Daniels (2, p. 38) summarizes the importance of the total organism in modern education as follows: "Ample justification for a consideration of, the problem of recreation may be found in the latest and most authoritative literature in the field of educat1on, as well as in a direct study of conditions found on many college campuses throughout the country. Rooted firmly in the philosophy of modern educatlon is the thought that the total organism must be given the opportunity for experiences of an all-round nature, with …
Drainage Of Land Overlying An Artesian Aquifer: Logan-Cache Airport, John Paul Riley
Drainage Of Land Overlying An Artesian Aquifer: Logan-Cache Airport, John Paul Riley
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Drainage problem Logan-Cache Airport is situated approximately 4 miles northwest of Logan, Utah, in sections 8, 9, 16, and 17, Township 12 north, Range 1 east, of Salt Lake Base and Meridian. The area of approximately 200 acres is a part of what is known as cache County Drainage District No.2. This district in itself contains more than 8,400 acres of waterlogged lands. Drainage of the se lands has, for many years, been a baffling and unsolved problem, complicated by 3 factors: (a) The whole of the valley in this area is underlain by an artesian ground-water reservoir. (b) The …
The Effects Of Fertilizers On The Yield, Carotene Content And Tocopherol Content Of Ranger Alfalfa Hay In Utah, Charles Wm. Jones
The Effects Of Fertilizers On The Yield, Carotene Content And Tocopherol Content Of Ranger Alfalfa Hay In Utah, Charles Wm. Jones
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Alfalfa is generally regarded as one of the world's most valuable cultivated forage crops. Few crops, if any, are equal to it in capacity to produce heavy yields of highly nutritious, palatable feed. A combination of desirable attributes as a forage plant and adaptation to a wide diversity of soil and climatic conditions has led to the use of alfalfa in the world to an extent probably exceeding that of any other single legume or grass. Alfalfa constantly proves itself as a valuable feed for most types of livestock. This is especially true in the states where a large amount …
Problems In The Development Of Social Behavior And Communication Among Insects, Charles D. Michener
Problems In The Development Of Social Behavior And Communication Among Insects, Charles D. Michener
Mc
No abstract provided.
Bulletin No. 358 - The Rainbow Trout In Relation To The Other Fish In Fish Lake, William F. Sigler
Bulletin No. 358 - The Rainbow Trout In Relation To The Other Fish In Fish Lake, William F. Sigler
UAES Bulletins
The coast rainbow Salmo gairdnerii irideus Gibbons is not indigenous to Utah. Its original range is Pacific North America from Alaska to Mexico. The coast rainbow was first introduced into Utah in 1883 from McCloud River, California.
The rainbow is used more extensively for artificial propagation than any other trout in North America, both for sport fishing and as a commercial food fish. Its natural habitat is big lakes and rivers; it can adapt itself to relatively small ponds, but it does not reproduce in these ponds.
Limnological and fishery investigations on Fish Lake were initiated in 1922 and have …
General Catalog 1953, Utah State University
General Catalog 1953, Utah State University
University Catalogs
General Catalog of 1953
Contains course descriptions, University college calendar, and college administration.
Buzzer 1953, Utah State University
Buzzer 1953, Utah State University
USU Buzzer Yearbook
1953 yearbook for Utah State University. Published from 1909-1971 with single issues in 1978 and 1981.
Bulletin No. 357 - Biennial Report, 1950-1952, R. H. Walker, D. A. Broadbent
Bulletin No. 357 - Biennial Report, 1950-1952, R. H. Walker, D. A. Broadbent
UAES Bulletins
For sixty-four years the Utah Agricultural Experiment Station has been studying the problems of the farmer to make life on the farm more profitable and more enjoyable and in turn to improve the economy of the entire state. From the laboratories and from the experimental farms have come research results that have and will continue to mean dollars and cents to the farmer and increased prosperity to the state. Here are a few brief statements of some of the results of the work during the past two years.
General Catalog 1952, Summer, Utah State University
General Catalog 1952, Summer, Utah State University
University Catalogs
General Catalog of 1952 Summer
Contains course descriptions, University college calendar, and college administration.
The Teaching Of Science, Sherwin Maeser
The Teaching Of Science, Sherwin Maeser
Faculty Honor Lectures
Like to teach! Whether with the expectant, half-frightened freshman, the senior, worried about his preparation now that . he must get out and meet competition, or the graduate student interested in new discoveries, I like to work with all of them.
I have been teaching a long time now. As has always been the case when one generation is thinking of turning over its work to the next, I am glad to have the opportunity to talk about some of the things that I consider important in this job of teaching.
The most varied and the most acute problems of …
The Effect Of Radioactive Phosphorus On The Histology Of The Rat Testis, Robert H. Peterson
The Effect Of Radioactive Phosphorus On The Histology Of The Rat Testis, Robert H. Peterson
Biology
The first account of radiation damage to male germinal tissue was published in 1903 by Albers-Schoenberg, and stated only that rabbits were made sterile by repeated exposure to X-ray irradiation. By 1925 numerous papers (Blanc, 1906; Barratt and Arnold, 1912; and Schinz and Slotopolsky, 1925) discussing the histological and cytological effects of irradiation on the testis had appeared. In 1928 Lacassagne, Lattes, and Fournier, using uranium x as an external source of beta radiation, reported damage to the testis of the same nature as that caused by X-ray irradiation (2). Within a few years internal irradiation of testis tissue was …
Histology Of Rat Adrenal, Liver, And Kidney Following Intraperitoneal Injection Of Phosphorus 32, A. Earl Johnson
Histology Of Rat Adrenal, Liver, And Kidney Following Intraperitoneal Injection Of Phosphorus 32, A. Earl Johnson
Biology
Radioactive materials and isotopes, since their introduction at the first of the century, have been invaluable tools in many fiends of research. Physiology and its related fields are among those receiving maximum benefit from the versatile tools. Fresh light has been shed on numerous heretofore insoluble problems with the coincidental introduction of new problems by the score. Foremost among these problems are the fundamental effects on individual tissues produced by radioactive materials. Before research with these valuale instruments can be exploited to its fullest extent, these basic effects must be determined. This study is an attempt to determine the histological …
The Effect Of Radioactive Phosphorus On The Histology Of The Rat Testis, Robert H. Peterson
The Effect Of Radioactive Phosphorus On The Histology Of The Rat Testis, Robert H. Peterson
Biology
The first account of radiation damage to male germinal tissue was published in 1903 by Albers-Schoenberg, and stated only that rabbits were made sterile by repeated exposure to X-ray irradiation. By 1925 numerous papers (Blanc, 1906; Barratt and Arnold, 1912; and Schinz and Slotopolsky, 1925) discussing the histological and cytological effects of irradiation on the testis had appeared. In 1928 Lacassagne, Lattes, and Fournier, using uranium x as an external source of beta radiation, reported damage to the testis of the same nature as that caused by X-ray irradiation (2). Within a few years internal irradiation of testis tissue was …
Effects Of Temperature And Light On The Mass Rearing Of The Geminate Leafhopper, Colladonus Geminatus (Van D.), Walter H. A. Wilde
Effects Of Temperature And Light On The Mass Rearing Of The Geminate Leafhopper, Colladonus Geminatus (Van D.), Walter H. A. Wilde
Biology
Mass rearing experiments with Colladonus geminatus ( Van D.) conducted in an experimental greenhouse laboratory from January 30, 1952, to April 18, 1952, indicated light had important breeding effects on C. geminatus, the geminate leafhopper. A light intensity of forty foot-candles provided by a 100 watt incandescent bulb for a period of 16 hours daily was the most effective of the three light intensities and the three heat ranges tried. It was found in the expirimental cages that light had the effect of speeding up the development of the new leaf hopper generation, progeny of the overwintering adults from …
Histology Of Rat Adrenal, Liver, And Kidney Following Intraperitoneal Injection Of Phosphorus 32, A. Earl Johnson
Histology Of Rat Adrenal, Liver, And Kidney Following Intraperitoneal Injection Of Phosphorus 32, A. Earl Johnson
Biology
Radioactive materials and isotopes, since their introduction at the first of the century, have been invaluable tools in many fiends of research. Physiology and its related fields are among those receiving maximum benefit from the versatile tools. Fresh light has been shed on numerous heretofore insoluble problems with the coincidental introduction of new problems by the score. Foremost among these problems are the fundamental effects on individual tissues produced by radioactive materials. Before research with these valuale instruments can be exploited to its fullest extent, these basic effects must be determined. This study is an attempt to determine the histological …
Experimental Infections With Eimeria Zurnii In Calves, Rulan S. Hansen
Experimental Infections With Eimeria Zurnii In Calves, Rulan S. Hansen
Biology
Bovine coccidiosis is an infectious disease, commonly called bloody scours or red diarrhea, that sometimes causes heavy losses among calves. It is of great economic importance in many parts of the world, including the United States. An economic loss of an estimated 10 million dollars occurs annually in the United States as a result of bovine coccidiosis.(2) It is known that Eimeria zurnii Rivolta, 1878, is one of the 2 most pathogenic species of coccidia in cattle. At present little information is available on this species. Further information concerning E. zurnii would be of value in establishing sound prophylactic measures …
Vaccination Of Turkeys Against Staphylococcosis With Living, Unmodified Broth Culture Of Staphylococcus Aureus, William E. Fox
Vaccination Of Turkeys Against Staphylococcosis With Living, Unmodified Broth Culture Of Staphylococcus Aureus, William E. Fox
Biology
This thesis is a report of an attempt to protect turkeys against staphylococcal synovitis by means of a vaccine consisting of a twenty-four hour, untreated broth culture of Staphylococcus aureus. The efficacy of the vaccine was challenged by an intravenous injection of the homologous organism and also by exposure to birds infected with the homologous organism.
Histology Of Rat Adrenal, Liver, And Kidney Following Intraperitoneal Injection Of Phosphorus 32, A. Earl Johnson
Histology Of Rat Adrenal, Liver, And Kidney Following Intraperitoneal Injection Of Phosphorus 32, A. Earl Johnson
Biology
Radioactive materials and isotopes, since their introduction at the first of the century, have been invaluable tools in many fiends of research. Physiology and its related fields are among those receiving maximum benefit from the versatile tools. Fresh light has been shed on numerous heretofore insoluble problems with the coincidental introduction of new problems by the score. Foremost among these problems are the fundamental effects on individual tissues produced by radioactive materials. Before research with these valuale instruments can be exploited to its fullest extent, these basic effects must be determined. This study is an attempt to determine the histological …