Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Education (7778)
- Science and Mathematics Education (3363)
- Social and Behavioral Sciences (2143)
- Arts and Humanities (1203)
- Higher Education (1193)
-
- Life Sciences (1066)
- Physical Sciences and Mathematics (1044)
- Curriculum and Instruction (830)
- Anthropology (745)
- English Language and Literature (438)
- Medicine and Health Sciences (377)
- Language and Literacy Education (315)
- Library and Information Science (312)
- Educational Leadership (263)
- Psychology (255)
- Educational Administration and Supervision (202)
- Communication (194)
- Business (187)
- Music (178)
- Economics (164)
- Sociology (160)
- Elementary Education (147)
- Counseling (142)
- Elementary and Middle and Secondary Education Administration (140)
- Engineering (138)
- History (136)
- Educational Psychology (131)
- Teacher Education and Professional Development (127)
- Children's and Young Adult Literature (125)
- Educational Technology (124)
- Keyword
-
- School--Iowa--Cedar Falls; (190)
- School administrators--Attitudes; Teacher-administrator relationships; Student-administrator relationships; (117)
- University of Northern Iowa--Curricula; Schedules (108)
- University of Northern Iowa. Faculty Senate; University of Northern Iowa--Faculty; (90)
- University of Northern Iowa--Periodicals; (85)
-
- Underground periodicals; (82)
- Iowa (65)
- Iowa State Teachers College--Curricula; University of Northern Iowa--Curricula; Schedules (58)
- Commencement ceremonies--Iowa--Cedar Falls; University of Northern Iowa--Periodicals; (54)
- Iowa Academy of Science--Periodicals; Science--Iowa--Periodicals; (53)
- Iowa State Teachers College--Periodicals; University of Northern Iowa--Periodicals; (49)
- Concert program--Iowa--Cedar Falls; (48)
- Education (43)
- University of Northern Iowa. College of Social and Behavioral Sciences–Periodicals; (38)
- School administrators -- Attitudes; Teacher-administrator relationships; Student-administrator relationships; (37)
- 1931-1995 (33)
- Pettit (33)
- Tom (33)
- University of Northern Iowa. College of Humanities (33)
- University of Northern Iowa--Curricula--Catalogs; (32)
- University of Northern Iowa. Graduate College--Periodicals; University of Northern Iowa--Graduate students--Periodicals; Graduate students--Iowa--Cedar Falls--Periodicals; (31)
- Iowa Academy of Science--Congresses; Science--Iowa--Congresses; (28)
- University of Northern Iowa--Statistics--Periodicals; (27)
- Arts and Sciences--Periodicals; (25)
- Iowa Communication Association--Periodicals; Communication--Study and teaching (Higher)--Iowa--Periodicals; (25)
- University of Northern Iowa. Library--Periodicals; University of Northern Iowa--Students--Services for--Periodicals; College students--Services for--Iowa--Cedar Falls--Periodicals; (25)
- University of Northern Iowa. School of Music--Periodicals; (25)
- Arts integration (24)
- Iowa Academy of Science--Periodicals; Iowa Academy of Science--Directories; (23)
- University of Northern Iowa. Department of Earth Science--Periodicals; (23)
- Publication Year
- Publication
-
- Graduate Research Papers (3274)
- Iowa Science Teachers Journal (2307)
- Dissertations and Theses @ UNI (919)
- Iowa Journal of Communication (890)
- Proceedings of the Iowa Academy of Science (834)
-
- Journal of the Iowa Academy of Science: JIAS (702)
- Honors Program Theses (569)
- Faculty Publications (299)
- Short Story (241)
- UNI Schedule of Classes (189)
- UNIversitas: Journal of Research, Scholarship, and Creative Activity (162)
- Faculty Work (108)
- The Alumnus (104)
- Institute for Educational Leadership Monograph Series (95)
- Major Themes in Economics (95)
- Spect-actor: A Journal of Pedagogy & Theatre of the Oppressed (93)
- Documents - Faculty Senate (92)
- Ballast Quarterly Review (83)
- Presidential Scholars Theses (1990 – 2006) (77)
- Iowa Academy of Science Documents (69)
- International Journal of Global Health and Health Disparities (61)
- Athletics Media Guides (56)
- UNI Commencement Programs (55)
- Draftings In (52)
- Journal of STEM Arts, Crafts, and Constructions (52)
- INSPIRE Student Research and Engagement Conference (50)
- Open Educational Resources (50)
- UNI Programs and Courses Catalogs (49)
- Music Recital Programs (48)
- Institutional Effectiveness & Planning Documents (47)
- Publication Type
- File Type
Articles 12781 - 12810 of 12955
Full-Text Articles in Entire DC Network
Studies Of Yeast V - Is Bios A Single Substance, Ellis I. Fulmer, V. E. Nelson
Studies Of Yeast V - Is Bios A Single Substance, Ellis I. Fulmer, V. E. Nelson
Proceedings of the Iowa Academy of Science
In previous communication (Journal of Biological Chemistry, March, 1922) Fulmer and Nelson showed that the water extract of alfalfa is much richer in the yeast growth stimulant, Bois, than is the 95 per cent alcoholic extract of the same material. In the work here described two extracts were prepared as follows from alfalfa which had been previously extracted with ether. Extract A was an extract by long extraction with absolute alcohol. Extract B was an extract prepared by long extraction of the absolute-alcohol-extracted material with water. Both extracts showed optimum concentrations for maximum stimulation and were about equally potent. Combinations …
The Alumni News Letter, V5n2, April 1, 1921, Iowa State Teachers College
The Alumni News Letter, V5n2, April 1, 1921, Iowa State Teachers College
The Alumni News Letter
Contains news of the College and its alumni.
Some Pleistocene Exposures In Des Moines, James H. Lees
Some Pleistocene Exposures In Des Moines, James H. Lees
Proceedings of the Iowa Academy of Science
In the early spring of 1921 as the writer was examining the face of the bluff bounding the north side of the Des Moines valley just below the Capitol grounds he noticed, on the west side of the entrance to a ravine between Southeast 13th and 14th streets, where the State operated a small drift coal mine for some time, a section of Pleistocene material above the Coal Measures sandstone, which seemed to present features of some interest. Closer inspection showed the probable presence of two drift sheets and since the superposed evidence of successive invasions of the continental glaciers …
The Readjustment Of The Peripheral Lung Motor Mechanism After Bilateral Vagotomy, T. L. Patterson
The Readjustment Of The Peripheral Lung Motor Mechanism After Bilateral Vagotomy, T. L. Patterson
Proceedings of the Iowa Academy of Science
It has been shown by Carlson and Luckhardt (1) in crucial experiments (1 to 2 hours) that destruction of the medulla or section of the vagi in the frog leads immediately to a permanent hypertonus or incomplete tetanus of the lung neuro-muscular mechanism, which makes the lung practically non-functional and useless as a respiratory organ. The present work however, was undertaken with the idea of ascertaining whether this hypertonic condition observed by these authors is permanent or temporary.
Officers, Past Presidents, And Members, Iowa Academy Of Science
Officers, Past Presidents, And Members, Iowa Academy Of Science
Proceedings of the Iowa Academy of Science
No abstract provided.
The Alumni News Letter, V4n2, April 1, 1920, Iowa State Teachers College
The Alumni News Letter, V4n2, April 1, 1920, Iowa State Teachers College
The Alumni News Letter
Contains news of the College and its alumni.
Swimming Pool Sanitation, Jack J. Hinman Jr.
Swimming Pool Sanitation, Jack J. Hinman Jr.
Proceedings of the Iowa Academy of Science
The swimming pool, being really a sort of common bath, rapidly departs from a sanitary condition, unless prompt and adequate measures are taken to maintain a reasonable degree of purity in the water. Moreover, since various types of intestinal infections, infections of the respiratory system, eye and ear infections, gonorrheal infections and skin infections have been traced to the waters of swimming pools, the protection of the bathers by means of proper treatment of the water and rigid inspection of all entrants into the pool is essential to safety.
Notes On Some Plants Of The Arapahoe National Forest And Rocky Mountain National Park, L. H. Pammel, R. I. Cratty
Notes On Some Plants Of The Arapahoe National Forest And Rocky Mountain National Park, L. H. Pammel, R. I. Cratty
Proceedings of the Iowa Academy of Science
One of us accepted an invitation to spend ten days in August, 1919, with the forestry students and Professor G. B. MacDonald, Professor G. C. Morbeck and Mr. D. C. Poshusta in the Arapahoe national forest. The camp was located at the junction of Spruce creek and the fork of St. Louis creek, near the ranger station, at an altitude of about 9,000 feet.
The Address Of The President - The Taxonomic Unit, T. C. Stephens
The Address Of The President - The Taxonomic Unit, T. C. Stephens
Proceedings of the Iowa Academy of Science
The retiring president is expected to follow the custom of addressing the Academy upon some subject of general interest. Fortunately, custom does not require that such an address shall embody one's own research or investigation; but it may consist of a survey, or of reflections of a general nature. It so happens that certain fields in which I have been somewhat interested have brought me to a study of the problem of the taxonomic unit in biology.
A Study Of The Phylogeny Of The Anteoninae, F. A. Fenton
A Study Of The Phylogeny Of The Anteoninae, F. A. Fenton
Proceedings of the Iowa Academy of Science
A study of the biology of insect parasites and their relationships with that of their hosts offers a most attractive and productive field for research, and as yet, comparatively speaking, but little has been done in this field. This is particularly true with the Hymenoptera, and the writer has been interested in working out the biology of the Anteoninae, one of the parasitic groups of this order. These insects are parasitic on three families of the Homoptera, namely, the Cicadellidae, and Fulgoridae, commonly known as leafhoppers, and the Membracidae or treehoppers.
In Memoriam: Herbert R. Werner; R. Ellsworth Call, Albert Hartzell, Charles Keyes
In Memoriam: Herbert R. Werner; R. Ellsworth Call, Albert Hartzell, Charles Keyes
Proceedings of the Iowa Academy of Science
No abstract provided.
The Alumni News Letter, V3n4, October 1, 1919, Iowa State Teachers College
The Alumni News Letter, V3n4, October 1, 1919, Iowa State Teachers College
The Alumni News Letter
Contains news of the College and its alumni.
The Alumni News Letter, V3n3, July 1, 1919, Iowa State Teachers College
The Alumni News Letter, V3n3, July 1, 1919, Iowa State Teachers College
The Alumni News Letter
Contains news of the College and its alumni.
The Alumni News Letter, V3n1, January 1, 1919, Iowa State Teachers College
The Alumni News Letter, V3n1, January 1, 1919, Iowa State Teachers College
The Alumni News Letter
Contains news of the College and its alumni.
Stratigraphic Delimitation Of St. Louis Formation, Charles Keyes
Stratigraphic Delimitation Of St. Louis Formation, Charles Keyes
Proceedings of the Iowa Academy of Science
Were it not for the fortunate circumstance that our early Carbonic section of the Mississippi Valley is already split up and its long recognized geographic title Mississippian Formation restricted in its application to a minor part more nearly coinciding with the original proposal of the name, it is probable that this familiar term would now have to give way to an older designation. In the sense of a sub-periodic title St. Louis, or Louisian, has precedence by many years over either Mississippi, or Mississippian.
Observations Of The Total Solar Eclipse Of June 8, 1918, At Matheson, Colorado, D. W. Morehouse
Observations Of The Total Solar Eclipse Of June 8, 1918, At Matheson, Colorado, D. W. Morehouse
Proceedings of the Iowa Academy of Science
The Drake University Observatory eclipse expedition occupied a very favorable site at Matheson, Colorado. It was wholly through the courtesy of Dr. Edwin B. Frost, Director of the Yerkes Observatory, who with Prof. E. E. Barnard, had selected this station as one of two very desirable locations, that the expedition was so happily situated.
In Memoriam: Byron D. Halsted, L. H. Pammel
In Memoriam: Byron D. Halsted, L. H. Pammel
Proceedings of the Iowa Academy of Science
No abstract provided.
The Resistance Of Streptococci To Germicidal Agents, Henry Albert
The Resistance Of Streptococci To Germicidal Agents, Henry Albert
Proceedings of the Iowa Academy of Science
During the past year and a half, streptococci have assumed an unusual role as causes of disease. They have been the cause of most of the serious infections of war wounds. They were almost entirely responsible for the severe epidemics of pneumonia and empyema which occurred in many places, especially military camps during the winter of 1917-18, and together with the pneumococcus were apparently the cause of most of the fatalities during the recent epidemic of influenza.
The Barberry In Iowa And Adjacent States, L. H. Pammel
The Barberry In Iowa And Adjacent States, L. H. Pammel
Proceedings of the Iowa Academy of Science
Of the 160 species of barberry generally recognized only the following have been commonly cultivated in Iowa; the common or European barberry (Berberis vulgaris), the Japanese barberry (B. Thunbergii), the B. canadensis, B. amurensis, B. Sinensis, B. ilicifolia, B. Fischeri and B. maerocarpa. The B. Fischeri and B. maerocarpa are regarded as synonyms of B. canadensis. The common European barberry, though commonly credited to Western Europe, is Asiatic according to J. Lind's "The Barberry Bush and its Law," being a translation from Berberisbusken og Berberisloven.
Thomisidae Of The Ames Region, I. L. Ressler
Thomisidae Of The Ames Region, I. L. Ressler
Proceedings of the Iowa Academy of Science
The spiders of the family Thomisidae are commonly called crab spiders. They are so-called because of the characteristic crablike attitude in which they hold the legs and because they can walk as readily sidewise or backward as forward. The first two pairs of legs are usually considerably longer and stouter than the third and fourth pairs. The tarsi are two-clawed. The eyes are small and arranged in two rows, both of which are almost always recurved.
The Relation Of Native Grasses To Puccinia Graminis In The Region Of Iowa, Western Illinois, Wisconsin, Southern Minnesota And Eastern South Dakota, L. H. Pammel
Proceedings of the Iowa Academy of Science
During the summer and fall of 1918 the writer made, under the auspices of the Cereal Investigations of the U. S. Department of Agriculture, a study of the distribution of some of our native grasses and their relation to Puccinia graminis. The region embraced Iowa, western Illinois and Wisconsin, southern and western Minnesota and eastern South Dakota.
Further Notes On Helicina Occulta Say, B. Shimek
Further Notes On Helicina Occulta Say, B. Shimek
Proceedings of the Iowa Academy of Science
Few American mollusks equal Helicina occulta Say in interest. It is an operculate species which has been reported at times as aquatic, though it is strictly terrestrial; its living representatives are distributed over widely separated areas in restricted local colonies, and evidently represent a declining race; and it is a common fossil of the loess of peculiar significance, of much more general distribution in the loess-covered portions of the upper Mississippi- Missouri basin, failing to reach the region of the northernmost living colonies, but extending well beyond them westward.
A Century Of Iowa Geology, Charles Keyes
A Century Of Iowa Geology, Charles Keyes
Proceedings of the Iowa Academy of Science
The first centennary of a science in Iowa is upon us. History of the sciences in the commonwealth now goes back beyond the span of our statehood. It transgresses a date when even a name for our state was yet unknown. In Iowa, by many years, claims to first recognition for geology antedate those of every other natural science. Curiously enough this earliest Iowa episode is also the most important geological event for the entire continent during a hundred years. It is even worldwide in some of its aspects. Nor are these early observations alone in their great significance. During …
The Alumni News Letter, V2n2, April 1, 1918, Iowa State Teachers College
The Alumni News Letter, V2n2, April 1, 1918, Iowa State Teachers College
The Alumni News Letter
Contains news of the College and its alumni.
An Annual White Sweet Clover, L. H. Pammel, Charlotte M. King
An Annual White Sweet Clover, L. H. Pammel, Charlotte M. King
Proceedings of the Iowa Academy of Science
Sometime previous to the spring of 1916 Professor Hughes of the Farm Crops Department of the Iowa State College found in the experimental plots of the common white sweet clover (Melilotus alba (L) Lam), a form which produced an annual root and died at the close of the season.
Further Work In Acid Potassium Phthalate As A Standard In Volumetric Analysis, W. S. Hendrixson
Further Work In Acid Potassium Phthalate As A Standard In Volumetric Analysis, W. S. Hendrixson
Proceedings of the Iowa Academy of Science
Nearly three years ago the writer showed that acid potassium and acid sodium phthalates may be used with advantage as standards in volumetric analysis. They can be easily prepared in a state of great purity, they have large molecular weights, and the acid potassium salt has the distinct advantage of absence of water of crystallization. So little work on these salts has been done and so limited is the knowledge of them that it was thought desirable to make further study of the properties and value as a standard of at any rate the potassium salt.
Note On The Tungsten X-Ray Spectrum (L-Series), O. B. Overn
Note On The Tungsten X-Ray Spectrum (L-Series), O. B. Overn
Proceedings of the Iowa Academy of Science
A rather incomplete report of the work of Dershem on the X-ray spectrum of tungsten has appeared in the proceedings of the Iowa Academy of Science, A complete report is to be found in the Physical Review of June, 1918, where he finds this spectrum to contain 19 lines in the L region. Further experiments have been carried on using the same apparatus and method as used by Dershem, but increasing the time of exposure, with the result that six new lines have been discovered.
A Study Of The Pollen And Pistils Of Apples In Relation To The Germination Of The Pollen, J. N. Martin, L. E. Yocum
A Study Of The Pollen And Pistils Of Apples In Relation To The Germination Of The Pollen, J. N. Martin, L. E. Yocum
Proceedings of the Iowa Academy of Science
The failure of a fruit tree to develop a normal amount of fruit may be due to a number of causes as stated by Kraus in volume VI of the Journal of Heredity. However, unless a plant develops fruit parthenocarpically, the development of fruit depends primarily upon how the pollen and pistil function relative to each other. As Kraus points out, fertilization by no means insures the development of a fruit, for very commonly the fruit does not develop despite the fact that normal fertilization occurred, but, on the other hand, in the absence of fertilization, fruit seldom develops among …
Some Problems Of Water Supply For Troops, Jack J. Hinman Jr.
Some Problems Of Water Supply For Troops, Jack J. Hinman Jr.
Proceedings of the Iowa Academy of Science
The problems of water supply under field conditions are very different from those of the average city or town, even though the same fundamental principles apply to both. The city or town will in all probability make an extensive and careful survey of all water supply prospects and then choose that source which seems likely to offer the cheapest means of getting enough water that will be safe to use for drinking and other domestic purposes. Once the source is decided upon, expensive pumping and purification plants are erected and a complex distribution system is installed. A high degree of …
Legal And Political Status Of Women In Iowa, Ruth A. Gallaher
Legal And Political Status Of Women In Iowa, Ruth A. Gallaher
Iowa Book Gallery
The book attempts "to present a general survey of the status of women in Iowa by pointing out the distinctions between men and women which have been established by law or sanctioned by judicial rulings."