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Articles 692791 - 692820 of 701709
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The Anatomy Of The Stem, Root And Leaf Of Dennstaedtia Cicutaria Moore, William J. Weishar
The Anatomy Of The Stem, Root And Leaf Of Dennstaedtia Cicutaria Moore, William J. Weishar
Bachelors’ Theses
The work in plant anatomy up to 1874 was brought together and added to by De Bary (1884) in his memorable work, the Comparative Anatomy of the Vegetative Organs of the Phanerogams and Ferns. Several years later, Van Tieghem (1886) presented the groundwork for the stelar theory to explain the fundamental structure of the stem and root axis of the plant. Since that time the anatomy of the Pteridophytes has been the object of Increased interest and study.
The Effect Of Organic And Inorganic Substances Upon The Enzymatic Activity Of Papain Using Gelatin As A Substrate, Raymond A. Sklencar
The Effect Of Organic And Inorganic Substances Upon The Enzymatic Activity Of Papain Using Gelatin As A Substrate, Raymond A. Sklencar
Bachelors’ Theses
In the science of enzymology many hitherto unknown facts have been discovered. Among these are the facts which show that certain substances or conditions will accelerate, inhibit, or poison an enzyme reaction. Thus, heavy metals, oxidizing agents, etc., will prevent the enzyme from working at a normal rate or even "kill" the enzyme completely. Again, certain materials or co-enzymes will speed up and increase the enzyme power of a substance.
The Influence Of Gelatin On The Ph Of Acids And Bases, Beverly Terwilliger
The Influence Of Gelatin On The Ph Of Acids And Bases, Beverly Terwilliger
Bachelors’ Theses
The purpose of this thesis is to determine how gelatin behaves in the presence of various acids and alkalis. It is possible to titrate gelatins with acids and bases and thereby determine the relation of the pH of the solution to the amounts of acid or base combined with the gelatin. If the results are plotted, a titration curve is obtained, the value of which gives the acid and base combining properties of a certain gelatin.
A Study Of Origins And Ecological Features Of Hardy, Cultivated, Herbaceous Plants Of Milwaukee, Wisconsin, Dorothy Elaine Witheck
A Study Of Origins And Ecological Features Of Hardy, Cultivated, Herbaceous Plants Of Milwaukee, Wisconsin, Dorothy Elaine Witheck
Bachelors’ Theses
Gardeners have always been interested in herbaceous plants, chiefly because of their beauty and usefulness. As a result of the great popularity, a large number of attractive varieties have been produced through centuries of' cultivation, selection and breeding. Very early agricultural and medical demands stimulated an interest in the plants, and as early as 372-287 B.C. Theophrastus, a pupil of Aristotle, described about 460 cultivated plants and classified them as herbs, undershrubs, shrubs and trees. Much of the work accomplished by the ancient Greeks was lost and it was not until the sixteenth century that renewed enthusiasm for the study …
A Study Of The Anatomical Structure Of The 6mm Wall-Eyed Pike, Richard E. Roche
A Study Of The Anatomical Structure Of The 6mm Wall-Eyed Pike, Richard E. Roche
Bachelors’ Theses
The following is a detailed study of the 6 mm Wall-eyed Pike. The organs and organ systems are presented and discussed in the same serial order that they appear in the embryo beginning at the anterior end and proceeding posteriorly. There has apparently been very little work done on the embryology of the Wall-eyed Pile for the literature contains only one article that is even closely related to this problem. In 1890 Reighard made a general study of the development of the Wall-eyed Pike from the time of fertilization to the fully grown adult. He did not, however, make any …
Inbreeding And Selectional Studies Of Drosophila Melanogaster, Marian Cecilia Dellers
Inbreeding And Selectional Studies Of Drosophila Melanogaster, Marian Cecilia Dellers
Bachelors’ Theses
The eyeless gene of Drosophila, which causes in general a reduction of the size of the eye in the adult fly, does not seem to produce a constant effect. Thus among the offspring of one pair of flies many phenotypes will be found, flies with reduced eyes of various sizes and flies with one or both eyes completely missing. The purpose of this series of experiments was to investigate the genetical and environmental factors involved in the modification of the results produced by the eyeless gene and to determine their relative importance, especially through selective breeding in the direction of …
A Chromium Plating Bath Containing Sodium Benzenesulfonate Instead Of Sulfuric Acid, Edward Burleigh
A Chromium Plating Bath Containing Sodium Benzenesulfonate Instead Of Sulfuric Acid, Edward Burleigh
Bachelors’ Theses
At the present day chromium plated articles are saving the country many tons of badly needed metals. The beautiful, bright,luster that chromium has is no longer the prime quality that makes its use so extensive. Today its extreme hardness has taken the foremost place. Parts worn by use and re-claimed with chromium, not only wear longer than the original ones· but they also save valuable metal and time put into new ones. New articles plated with chromium have increased life, and thus the time and metal needed for replacement is greatly reduced.
The present chromium plating baths containing sulfuric acid …
The Effect Of Sulfanilamide On The Spleen, Kidney, And Erythrocytes Of The Albino Rat, Paul M. Bergen
The Effect Of Sulfanilamide On The Spleen, Kidney, And Erythrocytes Of The Albino Rat, Paul M. Bergen
Bachelors’ Theses
Sulfanilamide today is recognized somewhat as a magical drug since it is being used in the cure of so many different diseases. Therefore it was my desire to experiment with it. The problem which the author has endeavored to solve has been, as the title implies, just what effect the drug has upon the blood, the cells of the spleen and the kidney. It has been my aim to verify or refute the findings of experimenters who have delved in the field previous to my experimentation, l and to attempt to give some explanation for the findings.
Colorless Fuchsin: A Staining Technique For The Salivary Gland Chromosomes Of Drosophila Melanogaster, Gordon I. Koehler
Colorless Fuchsin: A Staining Technique For The Salivary Gland Chromosomes Of Drosophila Melanogaster, Gordon I. Koehler
Bachelors’ Theses
The chromosome theory of heredity opened a large field for both cytologists and geneticists. They looked to the day when someone would find an organism in which the chromosomes were so large that it would be possible to see Qualitative differences along their length corresponding to the different genes which they knew must be present at these points. Before 1932, methods and materials to show these chromosomes to any appreciable extent had, however, not yet been devised. Competent observers using the finest of optical equipment, and the most refined techniques of staining could see little at the time of nuclear …
Culture Media For Drosophila, Joseph L. Himmelreich
Culture Media For Drosophila, Joseph L. Himmelreich
Bachelors’ Theses
In the work with Culture Media for Drosophila the author was interested in producing a medium that was not expensive, easy to prepare, and one that would produce mature and hardy flies.
The Cleaning Action Of Detergents And Soaps On Printer's Ink And Lubricating Oils, Daniel David Holzman
The Cleaning Action Of Detergents And Soaps On Printer's Ink And Lubricating Oils, Daniel David Holzman
Bachelors’ Theses
During the past few years, industry has developed a steadily increasing interest in certain new types of synthetic organic compounds.
Industry devoted to the cleaning of textiles has found the removal of printer's ink and lubricating oils a tedious operation.
There has been developed and perfected a series of synthetic materials which successfully meet modern needs.
The detergents, in general, have some or all of the following properties: wetting-out, dispersing, emulsifying, penetrating, and cleaning.
There seems to be a need to investigate some of these new detergents for commercial cleaning purposes.
The Use Of Organic Reagents In Inorganic Analysis, With Applications To Qualitative Tests For Certain Metallic Ions, Wallace S. Brey Jr.
The Use Of Organic Reagents In Inorganic Analysis, With Applications To Qualitative Tests For Certain Metallic Ions, Wallace S. Brey Jr.
Chemistry Honors Papers
This 39 page thesis presents a survey of the theory and general principles of the organic reactions followed by detailed discussion of several qualitative tests for metallic ions with experimental results on sensitivity and interference and consideration of the conditions under which the tests may be applied.
A Ten Year Follow-Up Study Of The Sixty Graduates And Ninety-Two Drop-Outs Of The George Washington Carver High School, Goose Creek, Texas With Implications For Curriculum Reorganization, Earnest Alvin Archia
A Ten Year Follow-Up Study Of The Sixty Graduates And Ninety-Two Drop-Outs Of The George Washington Carver High School, Goose Creek, Texas With Implications For Curriculum Reorganization, Earnest Alvin Archia
All Theses
We have proceeded to analyze this problem with two basic assumptions. First, we assume that the courses of study as now offered in George Washington Carver High School do not meet the needs of the graduates and drop-outs who enrolled there. Some students have more difficulty making adjustments than others. Second, we assume that there is a need for vocational training in the George Washington Carver High School to meet the needs of those students who do not complete their high school training.
In the light of these assumptions this study proposes to answer the following questions: 1. What have …
Phosphate Deposits In Western Summit, Wasatch, Salt Lake, Morgan, And Weber Counties, Utah, Alvin M. Hanson
Phosphate Deposits In Western Summit, Wasatch, Salt Lake, Morgan, And Weber Counties, Utah, Alvin M. Hanson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Phosphate deposits in the western United States have been the subject of considerable discussion in the last decade, and during the last few years much interest has been aroused in them. Phosphate was first discovered in this area in 1889, but it was not until 1906 that the United States Government took active interest in the study of these deposits. The investigation by the government of the occurrence of western phosphate was begun by Weeks and Ferrier (10), and later carried on by others. On December 9, 1908 the western phosphate reserve was created and many acres of land were …
A Study Of The Hydrolysis Of P-Bromoacetanilide, Franklyn Miller
A Study Of The Hydrolysis Of P-Bromoacetanilide, Franklyn Miller
Chemistry Honors Papers
This 24 page thesis examines reactions in the fields of organic and physical chemistry.
A Status Study Of The Graduates Of Central High School For The Five-Year Period 1932-36, With Implication For Curriculum Reorganization, Abner Willard Mcdonald
A Status Study Of The Graduates Of Central High School For The Five-Year Period 1932-36, With Implication For Curriculum Reorganization, Abner Willard Mcdonald
All Theses
The primary purpose of this study is to obtain trustworthy data from the status and opinions of graduates which will serve as a basis for the general improvement and reorganization of the curriculum of the Central High School. For example, in one procedure of making curriculum revision, the school system as a whole participates under the guidance of a special curriculum worker in co-operation with men and women in the community. The writer also recognizes that one of the best measures of the effectiveness of a school and its curriculum is found in the success and opinions of a school's …
A Proposed Program Of Language Arts For Ninth Grade Of Booker T. Washington High School, Marlin, Texas, A. Elsenia Soders Johnson
A Proposed Program Of Language Arts For Ninth Grade Of Booker T. Washington High School, Marlin, Texas, A. Elsenia Soders Johnson
All Theses
This program has been prepared, as a result of concentrated effort and extensive research under the direction of the Professor of English at Prairie View Graduate School. Conferences were held with the members of the staff of the English Department at Prairie View Graduate School, and interviews with the Secretary of the Marlin Chamber of Commerce and the Custodian of books in the office of the superintendent of Falls County schools were made.
Standardized tests were given to the experimental group and to the control group. Questionnaires were answered by both groups and literary selections to be used in the …
The Effect Of Home Produced Foods Upon The Eating Habits Of Pre-School Children In Henderson County, Texas, Ruby Williams Fuller
The Effect Of Home Produced Foods Upon The Eating Habits Of Pre-School Children In Henderson County, Texas, Ruby Williams Fuller
All Theses
This study includes fifty negro pre-school children between the ages of two and six years who lived in Henderson county, texas.
Henderson County is located in East Texas, between the Neches and Trinity Rivers. In 1930 (194-0 Census Report was not available at the time of the study) the population of Henderson County consisted of 6,793 families; 4,4-25 of which were farm families. There were 1,524- Negro families in the county; 1,289 were farm families and 235 were non-farm families. In other words, 84..5 percent of the Negro families in Henderson County were farm families, and the remainder non-farm families. …
Advantage Gained In Position And Salary By Teachers Who Changed Positions In North Dakota From 1927 To 1940, Matthew R. Sheppard
Advantage Gained In Position And Salary By Teachers Who Changed Positions In North Dakota From 1927 To 1940, Matthew R. Sheppard
Theses and Dissertations
No abstract provided.
The Influence Of Some Alkali Salts In The Presence Of Various Concentrations Of Calcium On The Growth Of Sporobolus Cryptandrus, Vaughn A. Clayton
The Influence Of Some Alkali Salts In The Presence Of Various Concentrations Of Calcium On The Growth Of Sporobolus Cryptandrus, Vaughn A. Clayton
Theses and Dissertations
This study deals with the reactions of Sporobolus cryptandrus to various concentrations of Utah's most common alkali salts. Its purpose is to determine the effects of various concentrations of sodium chloride, sodium carbonate, and sodium sulphate on the growth and fruiting of Sporobolus cryptandrus, and to determine to what extent, if any, various levels of calcium exert a protective influence against the toxicity of these three salts. In addition to the experimental work a field of study was conducted for the purpose of determining the concentrations of total salts found in soils supporting a good growth of Sporobolus cryptandrus.
Relationship Between High School Curriculum And Present Occupation Of Eighty Negro Graduates, Charles S. Wilson
Relationship Between High School Curriculum And Present Occupation Of Eighty Negro Graduates, Charles S. Wilson
Electronic Theses & Dissertations
This report is a study of the relationship between the curricula offered by the Girard and Pittsburg, Kansas High Schools and the present occupations of their Negro graduates from the years 1930 to 1940.
Data and Procedure
Data for determining the curricula of the various graduates were drawn from permanent school records of both cities.
Data pertaining to the present occupations (March, 1942) were obtained by personal interviews with the parents, graduates and very close friends.
The classification of typical occupations as put out by the United States Bureau of Census in effect at the present time was used in …
The Personality Traits Of Students Who Are Consistently Handicapped On Time Limit Examinations, James A. Unger
The Personality Traits Of Students Who Are Consistently Handicapped On Time Limit Examinations, James A. Unger
Theses and Dissertations
No abstract provided.
A Comparative Educational Survey Of Carlton And Pine Counties In Minnesota, O. A. Homme
A Comparative Educational Survey Of Carlton And Pine Counties In Minnesota, O. A. Homme
Theses and Dissertations
No abstract provided.
A Study Of The State Training School At Mandan, North Dakota, Martha E. Bratcher
A Study Of The State Training School At Mandan, North Dakota, Martha E. Bratcher
Theses and Dissertations
No abstract provided.
The Parliament Act Of 1911, Louis L. Brown
The Parliament Act Of 1911, Louis L. Brown
Theses and Dissertations
No abstract provided.
An Investigation And Evaluation Of Free Materials Available To Schools, John H. Sunderland
An Investigation And Evaluation Of Free Materials Available To Schools, John H. Sunderland
Theses and Dissertations
No abstract provided.
A Workbook Employing Diagnostic And Remedial Methods In Ninth Grade English, Janet D. Schroeder
A Workbook Employing Diagnostic And Remedial Methods In Ninth Grade English, Janet D. Schroeder
Theses and Dissertations
No abstract provided.
Organizing New Farmers Of America For Proficiency In The Agricultural Vocations, Buckner Sythias Luter
Organizing New Farmers Of America For Proficiency In The Agricultural Vocations, Buckner Sythias Luter
All Theses
The problem of organizing New Farmers of America for Proficiency in the Agricultural Vocations has grown out of repeated efforts on the part of teachers of vocational agriculture, teacher trainers, and supervisors to devise ways and means of making the N F A organization actually function as a training device for proficiency in vocational agriculture. It was selected by the writer for this study because of its importance to the present trend of types of organization used by local N F A Chapters in Texas.
Briefly stated, the primary objective of this study is to determine which of the types …
Stem Blight Of Alfalfa In Utah: A Complex Of Two Distinct Diseases, William E. Rader
Stem Blight Of Alfalfa In Utah: A Complex Of Two Distinct Diseases, William E. Rader
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
In 1908, Sackett described for the first time what appeared to be a new bacterial disease of alfalfa in Colorado. To this particular disease he applied the name “stem blight" and attributed the cause to a bacterium, Pseudomonas medicaginis n. sp. For some two decades or more Sackett's work on this disease was accepted. During this time stem blight, which was first thought to be indigenous to the western United State, was reported from nine states east of the Rocky Mountains. In 1933, Johnson and Valleau described a disease of alfalfa, characterized by stem lesions very similar in appearance to …
An Economic Analysis Of The Marketing Operations Of The Utah Berry Growers' Association, George W. Armstrong
An Economic Analysis Of The Marketing Operations Of The Utah Berry Growers' Association, George W. Armstrong
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Raspberry production in Utah is concentrated to a large extent in Utah county. According to the 1940 census, Utah county contains 62 percent of the state acreage of 611 acres. Average raspberry acreage in Utah is only about one-half acre per farm on farms reported as growing raspberries. With such small acreage the average producer cannot afford to devote very much time and effort to the production and marketing of raspberries. In the majority of cases raspberry production is carried on by the farmer's wife, as a means of gaining “pin” money for use in the household. Proceeds from raspberries …