Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- Utah State University (2708)
- TÜBİTAK (1669)
- Morehead State University (1585)
- Washington University in St. Louis (1122)
- Marquette University (1009)
-
- University of Nebraska - Lincoln (932)
- University of New Mexico (792)
- University of South Carolina (720)
- California Polytechnic State University, San Luis Obispo (714)
- Portland State University (679)
- University of Texas Rio Grande Valley (611)
- University of Montana (602)
- City University of New York (CUNY) (570)
- Nova Southeastern University (558)
- Brigham Young University (549)
- Old Dominion University (525)
- Eastern Illinois University (506)
- The Texas Medical Center Library (501)
- Wright State University (467)
- Western Kentucky University (434)
- Loyola University Chicago (414)
- University of Richmond (400)
- Missouri University of Science and Technology (392)
- Boise State University (387)
- University of Kentucky (387)
- University of Central Florida (380)
- Montclair State University (369)
- University of South Florida (361)
- Smith College (338)
- Virginia Commonwealth University (322)
- Keyword
-
- Biology (1042)
- Animals (356)
- Ecology (356)
- Evolution (355)
- Climate change (331)
-
- Biological Sciences (297)
- Department of Biological Sciences (271)
- Conservation (257)
- Scanning electron microscopy (257)
- Cancer (256)
- Humans (243)
- Genetics (235)
- Bacteria (207)
- Mice (202)
- Biodiversity (200)
- Apoptosis (192)
- Metabolism (192)
- Gene expression (181)
- Behavior (174)
- Morphology (169)
- Fish (164)
- Phylogeny (163)
- Biological sciences (160)
- Genomics (160)
- Bioinformatics (159)
- Drosophila (159)
- Invasive species (156)
- Mitochondria (149)
- Development (143)
- Temperature (143)
- Publication Year
- Publication
-
- Turkish Journal of Biology (1669)
- Roger W. Barbour Slide Collection (1387)
- Biology Faculty Publications (1360)
- Biological Sciences Faculty Publications (1155)
- Scanning Microscopy (1089)
-
- Theses and Dissertations (868)
- Arts & Sciences Graduate Student Theses and Dissertations (834)
- Biological Sciences Faculty Research and Publications (749)
- Faculty Publications (745)
- Biology Faculty Publications and Presentations (656)
- School of Biological Sciences: Faculty Publications (649)
- Electronic Theses and Dissertations (645)
- Biology ETDs (639)
- Biological Sciences (624)
- Master's Theses (519)
- Honors Theses (498)
- Masters Theses (496)
- Biology Faculty Works (397)
- Biology Faculty Research (396)
- Biology (377)
- School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology) (368)
- Dissertations and Theses (366)
- Faculty, Staff and Students Publications (357)
- Faculty Research & Creative Activity (337)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (333)
- Biological Sciences: Faculty Publications (314)
- Scanning Electron Microscopy (289)
- Journal of Undergraduate Research (283)
- Dissertations (266)
- Karbala International Journal of Modern Science (255)
- Publication Type
Articles 38911 - 38940 of 39268
Full-Text Articles in Entire DC Network
Recent Opinions Of Biologists On Evolution: 2nd Edition, Evolution Protest Movement
Recent Opinions Of Biologists On Evolution: 2nd Edition, Evolution Protest Movement
Stone-Campbell Books
No abstract provided.
Ua66/6 Minute Book, Wku Biology Club
Ua66/6 Minute Book, Wku Biology Club
Student Organizations
Meeting minutes of the WKU Biology Club for the period 1939 to 1948. Includes information on guest speakers, club trips, finances, elections of officers, membership and attendance.
A Chemical Method For The Quantitative Estimation Of Volatile Reducing Substances In Certain Fruits And Vegetables, Ruby M. Prigmore
A Chemical Method For The Quantitative Estimation Of Volatile Reducing Substances In Certain Fruits And Vegetables, Ruby M. Prigmore
Tennessee State University Alumni Theses and Dissertations
No abstract provided.
A Study Of The Pattern Of Scale Development In Salmo Clarkii Spilurus Cope, Josephine Hawrylko
A Study Of The Pattern Of Scale Development In Salmo Clarkii Spilurus Cope, Josephine Hawrylko
Biology ETDs
One of the phases of fish investigation is to determine the pattern of scale development is fishes. The problem deals with a study of the gross development of scales and their distribution over the body in Salmo clarkii spilurus Cope, Rio Grande Cut-throat trout. "This trout is known only from the upper Rio Grande basin and southward into the mountains of Chihuahua." The Cut-throat trout is a member of the Family Salmonidae and often goes under such common names as black spotted trout, mountain trout, New Mexico native trout, red-throat trout and various other titles.
The Importance Of The Spleen In Antibody Formation, Carl Frederick Cramer
The Importance Of The Spleen In Antibody Formation, Carl Frederick Cramer
Biology ETDs
It was the purpose of the phase of the investigation to ascertain:
(1) If there is a significant difference in infection or fatalities among splenectomized animals.
(2) If splenectomized animals can form antibodies, and to what degree.
Effects On Different Intensities Of Utilization Upon The Underground Parts Of Short Grasses In West Central Kansas, Farrel Branson
Effects On Different Intensities Of Utilization Upon The Underground Parts Of Short Grasses In West Central Kansas, Farrel Branson
Master's Theses or Doctor of Nursing Practice
Work on root systems of forage plants has indicated that a knowledge of root relationships is fully as important in determining the actual conditions of ranges or pastures as is knowledge of the effects of grazing upon aboveground portions of plants. This is especially true in arid or semiarid regions since plants of these areas are frequently subjected to long periods of drought, high temperatures, and high wind velocities. Some xeric plants have a thickened cuticular layer, stomates that open only at night, and other mechanisms that prevent loss of water that is absorbed by the roots. However, in plants …
A Descriptive Analysis Of The Musculature And Osseous Systems Of The Kangaroo Rat, Dipodomys Ordii, Virgil Mathis
A Descriptive Analysis Of The Musculature And Osseous Systems Of The Kangaroo Rat, Dipodomys Ordii, Virgil Mathis
Master's Theses or Doctor of Nursing Practice
The kangaroo rats constitute the only genus, Dipodomys, of the subfamily Heteromyinae, now extant . There is fossil evidence of two other genera which are now extinct. The kangaroo rat, Dipodomys ordii richardsoni, is one of the common rodents of western Kansas . According to Hibbard (3, p. 76), "Its range extends northeastward along the Kansas river into Riley County." These animals are easily distinguished from other rodents by their long tail, long hind legs and feet, small hands, fur lined external cheek pouches, and their saltating method of locomotion. These rodents are seldom seen by the casual observer, being …
An Ecological Study Of The Pocket Gopher In An Sandy Loam Area Of Ellis County, Kansas., Benjamin Mosier
An Ecological Study Of The Pocket Gopher In An Sandy Loam Area Of Ellis County, Kansas., Benjamin Mosier
Master's Theses or Doctor of Nursing Practice
This thesis is an ecological study of the pocket gopher in a sandy loam area of Ellis County, Kansas. The economic importance of the pocket gopher varies with the type of land and with its use. It is rather obvious that the economic importance of the gopher changed with the widespread advent of the settlers into Western United States. From the viewpoint of extensive agricultural practices, the pocket gopher must be considered a menace on cultivated lands. On non-agricultural districts the condition is in general reversed. Most ecologists recognize a definite benefit from burrowing animals on wild land.
An Analytic Comparative Study Of Certain Biology Textbooks Used At Secondary School Level, Joseph E. Rankin
An Analytic Comparative Study Of Certain Biology Textbooks Used At Secondary School Level, Joseph E. Rankin
Master's Theses or Doctor of Nursing Practice
Biology is the science of life and therefore deserves every consideration in the high school curriculum. The world today is making an extensive and intelligent use of biology in solving problems of personal and social significance. Scientists have discovered that certain phases of the subject are more important to man's welfare than others. For this reason it is essential that biology be presented to our high school students not as isolated facts, but in relation to the problem of living. Through this science of living things, the student can gain a healthy respect for facts and for conclusions based on …
Hormones Of The Vertebrates And Their Influence On The Growth And Development Of Invertebrates, M. G. Heckman
Hormones Of The Vertebrates And Their Influence On The Growth And Development Of Invertebrates, M. G. Heckman
Biology Honors Papers
This 14 page thesis discusses the nature of the hormone thyroxine, the structure and physiological behavior of paramecium and describes an experiment on the effect of vertebrate hormones with various invertebrates.
Study Of Viable Seeds In Surface Soil From Various Habitats In Ellis County, Kansas, Robert D. Lippert
Study Of Viable Seeds In Surface Soil From Various Habitats In Ellis County, Kansas, Robert D. Lippert
Master's Theses or Doctor of Nursing Practice
It is the purpose of this study to determine what species of plants emerge from samples of surface soil taken from various habitats after several years of favorable growing conditions.
Pastures Of Western Kansas In Relation To Intensity Of Utilization In Past Years, Gerald W. Tomanek
Pastures Of Western Kansas In Relation To Intensity Of Utilization In Past Years, Gerald W. Tomanek
Master's Theses or Doctor of Nursing Practice
Short grass pastures vary in their ability to produce forage for livestock consumption. One of the reasons for this difference is a variation in the degree of utilization in past years. Forage production of short grass ranges has been reduced to about one-half after only a few decades of improper grazing; therefore the problem of proper utilization is becoming more important every year (Forest Service, 1936). When the settlers first came to western Kansas they found an almost complete cover of native vegetation and during the first few years only a small portion of the range land was cultivated. With …
An Adaptation Of The Feulgen Reaction For The Staining Of The Salivary Gland Chromosomes Of Drosophila, Herman C. Inlow
An Adaptation Of The Feulgen Reaction For The Staining Of The Salivary Gland Chromosomes Of Drosophila, Herman C. Inlow
Bachelors’ Theses
The discovering of the genetic value of Drosophila salivary gland chromosomes by Painter, Heitz, and Bauer in 1934 posed a problem of technique to the microtomist that is still being improved upon and widened. The staining of these chromosomes fer better study and to determine their properties, both chemical and physical, has been the object of intense research. This paper is the result of my work in connection with this subject.
Objectivity In Biology, Cyril E. Abbott
Objectivity In Biology, Cyril E. Abbott
Journal of the Arkansas Academy of Science
No abstract provided.
A Historical Study Of A Wilt Disease Of Chrysanthemums, Eugene Constantine Gasiorkiewicz
A Historical Study Of A Wilt Disease Of Chrysanthemums, Eugene Constantine Gasiorkiewicz
Bachelors’ Theses
This thesis is the result of research at Marquette University on Chrysanthemums for the past year. The specific problem was to study the development of the pathogen, Fusarium conglutinans Wr. var. callistephi Beach, which was the cause of serious infection of chrysanthemums. This treatise covers the procedure and methods used in the study.
Fusarium Conglutinens Variety Callistephi, Beach And Its Effect On The Chrysanthemum, Mary Heimick Palmer
Fusarium Conglutinens Variety Callistephi, Beach And Its Effect On The Chrysanthemum, Mary Heimick Palmer
Bachelors’ Theses
This thesis is the result of extensive research for the past year at Marquette University on Chrysanthemums. In particular, I refer to a specific problem, that of an attempt to ascertain with certainty the cause of a serious infection of Chrysanthemums. This treatise covers the procedure and methods used in discovering the actual pathogen, and my reasons for believing that this particular pathogen is Fusarium conglutinens variety Callistephi.
The Rh Factor: Recent Developments And A Study Of Its Incidence Among The Indians Of The Southwest, Earl B. Gerheim
The Rh Factor: Recent Developments And A Study Of Its Incidence Among The Indians Of The Southwest, Earl B. Gerheim
Biology ETDs
The purpose of this study was to continue the work started in determining the incidence of the Rh factor among Indians of the Southwest and review the related literature. This paper will include the author's initial results in which 251 Indians were tested.
There is at this time no published account on the incidence of the Rh factor among the Indians of the Southwest; therefore, this is important from the standpoint of originality. The problem has medical importance in the role which Rh plays in transfusion and congenital hemolytic disease, otherwise known as erythroblastosis fetalis. The results will serve as …
A Cytological Study Of The Salivary Gland Chromosomes Of The Attached-X Variety Of Drosophila Melanogaster, Jack Schull
A Cytological Study Of The Salivary Gland Chromosomes Of The Attached-X Variety Of Drosophila Melanogaster, Jack Schull
Bachelors’ Theses
The detailed study of -the salivary chromosomes of the Diptera has been of great importance in substantiating cytologically the theories of genetics. A noteworthy example of the importance of cytological study is the non-disjunctive phenomenon which has occurred on at least several occasions in the strain of Drosophila melanogaster. Bridges (1913) was the first to report nondisjunction of sex chromosomes which was an important confirmation of the chromosome theory. L. V. Morgan (1922) used the cytological study of the germ cells of Drosophila melanogaster to prove that there was no disjunction of the sex chromosomes in the attached-X strain.
A Comparison Of The Autonomic Nervous System Of The Cat And The Pigeon, William P. Mccarthy
A Comparison Of The Autonomic Nervous System Of The Cat And The Pigeon, William P. Mccarthy
Bachelors’ Theses
The purpose of this thesis is to describe the autonomic nervous system of the cat and pigeon and to compare them as to their structure. This comparison will consist in noting the differences and points of similarity between the two animals. The autonomic nervous system of the cat is more complex than that of the pigeon and for that reason the comparison will consist in pointing out the parts of the autonomic nervous system present in the cat, but which are not found in the pigeon. In noting the points of similarity only the most important will be treated.
Developmental Anatomy Of Descurainia Pinnata, Robert D. Spensley
Developmental Anatomy Of Descurainia Pinnata, Robert D. Spensley
Biology ETDs
This study is concerned mainly with the morphological development of Descurainia pinnata subspecies ochroleuca (Wooton) Detling, a member of the tribe Sisymbrieae and subtribe Descurainiinae of the Cruciferae. Although commonly referred to as Sophia by many botanists, this genus is otherwise known as Descurainia and sometimes partly included in Sisymbrium. D. pinnata is listed as Sisymbrium canescens in Gray's manual, as Sophia pinnata by Coulter and Nelson, as Descurainia pinnata by Kearney and Peebles, and as Sophia ochroleuca by Wooton and Stanley.
The Anatomical Differences Of The Tubers Of The Genus Dicentra, June E. March
The Anatomical Differences Of The Tubers Of The Genus Dicentra, June E. March
Bachelors’ Theses
Gray (1878) described a number of the subterranean modifications of the stems. These can be distinguished from the roots since they produce regular buds and scale leaves.
A Survey Study Of The Intestinal Worms And Ciliates Of The Hog (Suis Domesticas), John F. Crowley
A Survey Study Of The Intestinal Worms And Ciliates Of The Hog (Suis Domesticas), John F. Crowley
Bachelors’ Theses
The purpose of this £survey study was to ascertain the variety and extent of intestional worm and ciliate parasites of hogs slaughtered in packing houses of the Milwaukee area.
The Effects Of Various Concentrations Of Vitamin B1 On The Growth Of Amoeba Proteus, Walter J. Bo
The Effects Of Various Concentrations Of Vitamin B1 On The Growth Of Amoeba Proteus, Walter J. Bo
Bachelors’ Theses
Thiamin or vitamin B1 was first isolated in crystalline form from rice bran by Jansen and Donath in 1926 . Windous, Tschesche, Buhkopf, Laquer and Schultz in 1931 isolated the pure vitamin B1 from yeast and established the emperical formula - C12H17ON4Scl.Hcl .
A Study Of The Renal Vascular Supply In The Domestic Cat, Elizabeth Rosen
A Study Of The Renal Vascular Supply In The Domestic Cat, Elizabeth Rosen
Bachelors’ Theses
Studies on the normal and abnormal vascularization of the renal vessels in the domestic cat (felis domestica) indicate the frequency of anomalies that occur, but in most of the studies it is the inferior vena cava that is most often recorded. Among the occasional references to several renal veins or arteries we have Huntington and McClure, Elmer Butler, Gaylord Bates, William Darrach, and C.H. Fortune. Yet no study seems to have been made of individuals of any particular class. A superficial observation seems to indicate a large number of cats used in the laboratory had multiple renal veins. Hence a …
Thrips Species Infesting Tomatoes And Other Host Plants Of These Insects In Northern Utah, Darrell R. Maddock
Thrips Species Infesting Tomatoes And Other Host Plants Of These Insects In Northern Utah, Darrell R. Maddock
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The purpose of this study has been to determine which species of thrips infest tomato plants and fruits in northern Utah, and to find out which other plants occurring in this area also serve as hosts for tomato-infesting thrips.
Because of the importance of tomato-infesting thrips to the canning industry, it was decided that more complete knowledge of the species of thrips which are found on tomatoes should be obtained. Because most thrips generally have been difficult to control, it was believed that a general knowledge of the plants on which these thrips occur would enable tomato growers to eliminate …
Municipal Water Softening In Kansas, Roy Rankin
Municipal Water Softening In Kansas, Roy Rankin
Fort Hays Studies Series
This study was made for the benefit of the more than one-half million residents of Kansas who live in cities and towns of the state and do not enjoy the advantage of soft water.
A Comparative Study Of Directed Laboratory And Lecture Demonstration As Methods Of Instruction In Teaching Botany To High School Students, M. Lucida Vorndran
A Comparative Study Of Directed Laboratory And Lecture Demonstration As Methods Of Instruction In Teaching Botany To High School Students, M. Lucida Vorndran
Master's Theses or Doctor of Nursing Practice
A controlled investigation of green plants as the most important food factories of the world has been made in order to contribute more information upon the issue. Stated more specifically, the problems of this experimental study were the following: 1. To determine which of the two methods, if either, is superior as a procedure for learning. 2. To determine whether laboratory experiments are more effective than lecture-demonstration in training students to think clearly, to correlate and retain facts; and finally, to draw logical conclusions. 3. To determine, if possible, which method stimulated the greater amount of pupil interest.
Bio-Ecology On A Mixed Prairie Near Hays, Kansas, H. Leo Brown
Bio-Ecology On A Mixed Prairie Near Hays, Kansas, H. Leo Brown
Master's Theses or Doctor of Nursing Practice
A survey of the activity of wild animals in connection with range conditions and range management is greatly needed in western Kansas. To have a well-managed range one should have an understanding of the ecological factors which benefit or deplete the native vegetation that is essential for production of livestock. The impact of grazing, and the effect of changes in edaphic and atmospheric environment on the prairie have further emphasized the importance of a cover of grass in preventing erosion.
An Anatomical Study Of Cicer Arietinum, Mary Elizabeth Johns
An Anatomical Study Of Cicer Arietinum, Mary Elizabeth Johns
Biology ETDs
This investigation was made for the purpose of studying the developmental anatomy of the primary axis of Cicer arietinum. Ontogenetic studies of the primary and secondary tissues of the root and stem, and the leaf primordia are included
The Stomatal Behvior Of Begonias And Its Relationship To Infection By Xanthomonas Begoniae, Eugene David Kitzke
The Stomatal Behvior Of Begonias And Its Relationship To Infection By Xanthomonas Begoniae, Eugene David Kitzke
Bachelors’ Theses
A leaf spot disease of begonias caused by a bacterium has been under observation and study at Marquette University for nearly a year. It brings up many interesting questions which need to be answered before the investigators can fully evaluate and determine correctly the relationships of this organism to the Begoniaceae. One of the questions, which has come up, was the problem of the mode of entrance. It is the purpose of this paper to deter mine the relation of the stomata to infection.