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Articles 38791 - 38820 of 39095
Full-Text Articles in Life Sciences
An Electrophoretic Determinatin Of The Properties Of Methacrol M.E. By The Use Of A Capillary Cross-Arm "U" Tube, Richard Reiland Bains
An Electrophoretic Determinatin Of The Properties Of Methacrol M.E. By The Use Of A Capillary Cross-Arm "U" Tube, Richard Reiland Bains
Bachelors’ Theses
this research was undertaken primarily to discover the use of a capillary cross-arm "U" tube in the determination of the electrophoretic and other electrical proper ties of a plastic emulsion.
The primary objective was to determine the isoelectric point of the emulsion and also the optimum pH or electro-endosmotic motion.
The secondary and distant objective was to note when, how, and it any coherent plating on the electrodes took place.
The Study Of The Effects Of Paradichlorbenzene On Drosophila Melanogaster, Dwain J. Paal
The Study Of The Effects Of Paradichlorbenzene On Drosophila Melanogaster, Dwain J. Paal
Bachelors’ Theses
The object of this investigation was to produce polyploid cells in the salivary glands of Drosophila melanogaster by treatment with paradichlorbenzene. Polyploidy is the condition in which the number of chromosomes in the nucleus is an exact multiple of the somatic or diploid number greater than two. This phenomena has often been referred to as produced by incomplete nuclear division.
The Influence Of Dowicide A On Drosophila Melanogaster, Helen Mary Dore
The Influence Of Dowicide A On Drosophila Melanogaster, Helen Mary Dore
Bachelors’ Theses
Drosophila melanogaster plays a far greater part in science than man at first realizes. A study of their heredity makes it possible to develop laws of human heredity and with this knowledge, thus provide for the betterment of mankind. Considerations which lead to the choice of the fruit fly, Drosophila melanogaster, in experimentation are briefly the following: (a) its small size which makes, it convenient to keep; (b) its short life cycle; and (c) the ease with which it can be cultivated. Since fruit flies are so important to science, it follows that it is also important that a …
The Biological Effect Of An Invisible Radiation On The Drosophila Melanogaster, Leo C. Massopust Jr.
The Biological Effect Of An Invisible Radiation On The Drosophila Melanogaster, Leo C. Massopust Jr.
Bachelors’ Theses
In a series of investigations, Massopust describes various effects he obtained with an invisible radiation which he called infra-red. The results he obtained seemed to indicate that this radiation might have some effect on development and growth. Hence, the Drosophila Melanogaster was chosen for experimentation to ascertain whether or not the invisible radiation he used would produce mutations. Personal communications from this author disclosed that up to the present writing he has not been able to establish definitely that the radiation lies somewhere in the infra-red band of the electro-magnetic field. He does, however, favor the interpretation that it is …
Regeneration Experiments With Planaria Maculata, Leon North
Regeneration Experiments With Planaria Maculata, Leon North
Biology Honors Papers
This 16 page thesis describes experiments conducted on planaria to determine the effect of vitamin B solution on the rate of regeneration.
The Preparation Of Corrosion Specimens, Llewellyn W. Hunsicker
The Preparation Of Corrosion Specimens, Llewellyn W. Hunsicker
Biology Honors Papers
This 11 page thesis describes the technique involved in making a Wood's metal cast of the lungs as well as the preparation of a vinylite corrosion specimen of the vascular system of a cat.
Injection Of Circulatory System Of Chick Embryos, Mary T. Dimedio
Injection Of Circulatory System Of Chick Embryos, Mary T. Dimedio
Biology Honors Papers
This 16 page thesis discusses embryo development, formation of the circulatory system and a history of embryo injection. It also provides methods of removing, fixing and mounting the chick embryo.
The Comparative Difference In Skeletal Structure Of Two Strains Of The Mus Musculus, Pasqual A. Capitanelli
The Comparative Difference In Skeletal Structure Of Two Strains Of The Mus Musculus, Pasqual A. Capitanelli
Bachelors’ Theses
Father Raymond H. Reis, S.J., and Robert A. Littleford, Ph.D., both of the staff of Marquette's University Zoology department, while working upon an experiment in the feeding to the common house mouse, "Mus Musculus", noted that in the two strains of mice that were used, the white variety of mouse was a trifle larger than the black variety, but that their weights were identical. They suggested the possibility of a skeletal difference that seemed to be most prominent in the head of the mice.
A Study Of The Relationship Existing Between Certain Insects And Some Native Western Kansas Forbs And Weedy Plants, Carl Theodore Brandhorst
A Study Of The Relationship Existing Between Certain Insects And Some Native Western Kansas Forbs And Weedy Plants, Carl Theodore Brandhorst
Master's Theses or Doctor of Nursing Practice
To the casual observer perhaps no sight could be more commonplace than that of an insect alighting upon a Kansas sunflower. But the relationship which exists between plant and insect is a matter which is often unknown even to the specialist. And yet a lack of understanding of these relationships has at times resulted in inconvenience, loss and even in calamity. To determine the relationship which certain insects bear to some of our native western Kansas forbs and weedy plants is the purpose of this study.
A Study Of Fluctuations In Coyote Numbers And Possible Causes, Sherwin B. Griswold
A Study Of Fluctuations In Coyote Numbers And Possible Causes, Sherwin B. Griswold
Master's Theses or Doctor of Nursing Practice
This paper reports the findings of a study of coyote numbers, with particular reference to fluctuations, their periodicity, if any, and their possible causes. In order to answer these questions studies of bounty payments were made in four centrally located counties of Kansas. The counties selected for this study were Ellis, Russell, Edwards, and Harvey. The location of these counties is shown in figure I on page 5. A record of these bounty payments was secured by checking through the records in the office of the county clerk of these counties for all years in which records were on file.
A Study Of The Genus Penstemon In New Mexico, Gladys Turner Nisbet
A Study Of The Genus Penstemon In New Mexico, Gladys Turner Nisbet
Biology ETDs
The purpose of this study has been: (a) to present a systematic treatment of those members of the genus Penstemon that are found in New Mexico; (b) to give a full description of each species including a consideration of its relationships with other species of the genus; (c) to ascertain and map, in so far as possible, the distribution of the various species in New Mexico.
The Identification Of Certain Fiber Plants Of The American Southwest, Carl J. King
The Identification Of Certain Fiber Plants Of The American Southwest, Carl J. King
Biology ETDs
In this study an examination has been made of the leaf fiber from various species of the genera Agave, Yucca, Nolina and Dasylirion, in order establish a technique and set of diagnostic characters which might be used in the identification of archaeological material suspected of containing such fibers.
The Differentiation Of Xylem Vessels In The Stem Tip Of Phaseolus Vulgaris L. Var. Kentucky Wonder, Lora Shields Mangum
The Differentiation Of Xylem Vessels In The Stem Tip Of Phaseolus Vulgaris L. Var. Kentucky Wonder, Lora Shields Mangum
Biology ETDs
The purpose of this investigation of xylem maturation was to determine the relationship, if any, between the type of secondary-wall thickening and the order of differentiation; also, to ascertain the influence of the rate of elongation of the plant as a whole, more specifically of individual xylem cells, upon the order of deposition and type of secondary walls.
The Effects Of Deficiencies Of Copper, Iron And Zinc Upon Untreated And Rootone Treated Rye And Alfalfa, Archer P. Crosley Jr.
The Effects Of Deficiencies Of Copper, Iron And Zinc Upon Untreated And Rootone Treated Rye And Alfalfa, Archer P. Crosley Jr.
Biology Honors Papers
This 18 page thesis studies the effects of deficiencies in the ions of copper, iron and zinc upon untreated and Rootone treated rye and alfalfa plants.
The Effects Of The Deficiencies Of Boron, Phosphorus, And Manganese As Correlated With The Use Of A Growth-Substance, Nathaniel Winkelman Jr.
The Effects Of The Deficiencies Of Boron, Phosphorus, And Manganese As Correlated With The Use Of A Growth-Substance, Nathaniel Winkelman Jr.
Biology Honors Papers
This thesis discusses experiments on plant growth, including ion deficiencies and the effects of growth hormones.
Quantitative Effects Of Rootone On Stem And Root Growth In Zea Mays And The Effect Of Nutrient Salts On The Same, Roy Wenhold
Quantitative Effects Of Rootone On Stem And Root Growth In Zea Mays And The Effect Of Nutrient Salts On The Same, Roy Wenhold
Biology Honors Papers
This 22 page thesis examines the effect of Rootone growth hormone on the sweet corn plant.
The Histology Of The Duodenum Of Thamnopsis Sirtalis, Harvey William Lyon
The Histology Of The Duodenum Of Thamnopsis Sirtalis, Harvey William Lyon
Bachelors’ Theses
The problem directly concerned is the histological study of the duodenum In Thamnopsls sirtalls, the common green or garter snake. The gross anatomy has been worked out In Reptilian forms and shows great variations, whereas very little work has been performed in the histology of the digestive organs. Some study has been made In other Reptilian forms such as the lizzard family but the knowledge of their histological structure is limited. Therefore if the gross anatomy differs in various forms, so may the histology differ also. It is the problem then of this thesis to investigate this subject and determine …
An Experimental Attempt To Modify The Sex Ratio Of Drosophila Melanogaster, Herman Weingrod
An Experimental Attempt To Modify The Sex Ratio Of Drosophila Melanogaster, Herman Weingrod
Bachelors’ Theses
Sex control has been defined as the science of producing male or female offspring at will by artificial means. Because of the far reaching consequences of such a technique, man has always had a strong desire to control the sex of his offspring. The ancient Egyptians attempted it by means of magic, while the old Hebrew Talmud offered suggestions for its practice based on practical experience. The problem as such forms part of the folklore and superstition of many ancient races and peoples.
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.
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 …
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.
Scientific Illustration, Alys Leontine D'Avesne
Scientific Illustration, Alys Leontine D'Avesne
Master's Theses
It may be somewhat difficult at first glance to understand the essential character of the relationship of art to science, and especially to the natural sciences. Without illustration it would be impossible either to learn or to teach these sciences . Drawings are needed in the classroom and in the laboratory to aid the teacher, and they are perhaps even more important in individual research where there is no teacher present to guide and to instruct the student .
Scientific illustration is not only an aid to teaching, it teaches by itself when properly executed. In cases where verbal description …
Some Aspects Of Evolutionary Theory, George M. Robertson
Some Aspects Of Evolutionary Theory, George M. Robertson
Fort Hays Studies Series
The present contribution is not a unified account, but is a series of essays dealing with some aspects, but is a series of essays dealing with some aspects of evolutionary theory.
The Effect Of Climate And Different Grazing And Dusting Intensities Upon The Yield Of The Short Grass Prairies In West Central Kansas, Marvin L. Lacey
The Effect Of Climate And Different Grazing And Dusting Intensities Upon The Yield Of The Short Grass Prairies In West Central Kansas, Marvin L. Lacey
Master's Theses or Doctor of Nursing Practice
The purpose of this problem was to determine the effect of climate, amount of dusting, and degree of grazing by livestock and grasshoppers upon the quantity and quality of forage produced by various short grass pastures in west-central Kansas.
The Incidence Of Trichinella Spiralis In The Diaphragms Of Swine From The Louisville Abattoirs., Stuart Lyle Adams
The Incidence Of Trichinella Spiralis In The Diaphragms Of Swine From The Louisville Abattoirs., Stuart Lyle Adams
Electronic Theses and Dissertations
Trichinosis is a disease caused by the parasitic nematode Trichinella spiralis. When meat containing encysted larvae is consumed the cysts are dissolved by the action of the gastric juice in the stomach and the larvae migrate to the intestine where they mature, copulate and give birth to living young within a week of the original infection. The larvae enter the lymph spaces and are carried to the thoracic duct from which they reach the venous circulation and thence the arterial circulation by way of the heart and the pulmonary capillaries. From the arterial blood the larvae enter most of the …