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Nitrate Production As Affected By Grain-Crop Residues On The Surface Of The Soil, T. M. Mccalla, J. C. Russel

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The purpose of this bulletin is to present the data on nitrate contents and nitrate production in tests where straw or stalk residues were left on the surface through subsurface tillage, as compared with check treatments where these residues were plowed under or were absent. Nine of these tests were at Lincoln, Nebraska, and one was at the Hastings, Nebraska, Hydrological Project. Two tests were conducted in 1939, four in 1941, and four in 1942.

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.

Abstract Papers

Journal of the Minnesota Academy of Science

No abstract provided.

Preliminary Report On Subtratum Temperature Studies On Root Growth, Stanley W. Oexemann

Journal of the Minnesota Academy of Science

No abstract provided.

Abstract Papers

Journal of the Minnesota Academy of Science

No abstract provided.

Back Matter

Journal of the Minnesota Academy of Science

No abstract provided.

The Foundation Of Permanent Agriculture In Arid Regions, Orson W. Israelsen

Faculty Honor Lectures

The engineer, like other scientists, is continuously seeking knowledge and understanding of the universe in which he lives. He is vitally interested in the control and the use of the forces and materials of nature for the benefit of man. He strives for the maximum economy in the use of these forces and materials which is consistent with safety and durability. He abhors waste and he works vigorously to increase efficiency. To the engineer, mastery of the physical obstacles of life is not only a challenge-it is also an opportunity. He knows that full understanding of the physical sciences is …

Establishment, Development, And Management Of Conifer Plantations In The Eli Whitney Forest, New Haven, Connecticut, Ralph C. Hawley, Harold J. Lutz

Yale School of the Environment Bulletin Series

No abstract provided.

White Pine Blister Rust In Western North America, J. L. Mielke

Yale School of the Environment Bulletin Series

No abstract provided.

Bulletin No. 305 - The Composition Of Sumer Range Plants In Utah, L. A. Stoddart, J. E. Greaves

UAES Bulletins

In Utah, a vast industry of livestock grazing, which is the backbone of the state's agriculture, has arisen during the past 75 years. Range land furnishes between 6 and 7 million animal unit months of forage to some 2 1/2 million sheep and 275 thousand range cattle. Income from meat, wool, and range livestock sales in Utah is about $15,801,500 annually, of which $11,700,000 is calculated to be obtained from range lands exclusive of cultivated pastures.

These range lands can be used economically in no other way than by grazing livestock and, because of heavy winter snows and protracted dry …

Vegetation Of The Northern Part Of Cherry County, Nebraska, William L. Tolstead

Conservation and Survey Division: Faculty and Staff Publications

Agricultural practices in the Great Plains of North America are now in a period of adjustment from a traditional agriculture initiated by pioneer farmers to a grazing economy based upon potentialities of climate and soil. The attainment of a proper system of land use has been retarded in many localities by the lack of definite information concerning the vegetation and its indicator significance. In this study of the vegetation of Cherry County, Nebraska, the interrelations between the plants and their environments are discussed, the dominant species are described, and changes in grasslands caused by seasons, grazing, and climatic cycles are …

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 Scientist's Concept Of The Physical World, Willard Gardner

Faculty Honor Lectures

To those who are aesthetic, there is perhaps nothing more inspiring than a beautiful sunset, with brilliant colors above the horizon and with banks of dark clouds above, set in the deep blue of the heavens, or the brilliant hues of the rainbow forming a halo about the majestic mountain with its coat of green, purple, brown, or gray. By these things are the emotions stirred.

The physicist too is emotional but he.is also at times realistic. He becomes sentimental but he also seeks to explain the behavior of nature. By means of devices and instruments his perceptual world is …

Fifty-Sixth Annual Meeting Of The Iowa Academy Of Science And The Eleventh Annual Convention Of The Junior Academy Of Science Of Iowa, April 17 And 18, 1942, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.

Front Matter

Journal of the Minnesota Academy of Science

No abstract provided.

Abstract Papers

Journal of the Minnesota Academy of Science

No abstract provided.

Abstract Papers

Journal of the Minnesota Academy of Science

No abstract provided.

Back Matter

Journal of the Minnesota Academy of Science

No abstract provided.

Range Sheep Industry In Kittitas County, Washington, Reginald M. Shaw

Geography Faculty Scholarship

This article summarizes the sheep industry in Kittitas County, Washington State as a microcosm of the entire Pacific Northwest sheep industry.

Yield Of Even-Aged Stands Of Loblolly Pine In Northern Louisiana, Walter H. Meyer

Yale School of the Environment Bulletin Series

No abstract provided.

Decay Of Western Hemlock In Western Oregon And Washington, G. H. Englerth

Yale School of the Environment Bulletin Series

No abstract provided.

Growing Of White Pine On The Yale Forest Near Keene, New Hampshire, Ralph C. Hawley, Robert T. Clapp

Yale School of the Environment Bulletin Series

No abstract provided.

Management Of Loblolly Pine In The Pine-Hardwood Region In Arkansas And In Louisiana West Of The Mississippi River, Herman H. Chapman

Yale School of the Environment Bulletin Series

No abstract provided.

Activity Of Papain On Gelatin Mixtures, Edward J. Ruschmann

Bachelors’ Theses

Within the Marquette chemical laboratories under the direction and supervision of Dr. John R. Koch, professor and head of the Chemistry Department, many noteworthy advances in enzyme chemistry have been achieved. A new type all glass, single unit viscometer was developed and perfected by Koch and now is the basis of the study of enzyme activity by viscometric methods. The use of this viscometer is not limited solely to work in these laboratories but has also been used with great success in bating and brewing.

The Geographic Distribution Of Azotobacter And Rhizobium Meliloti In Nebraska Soils In Relation To Certain Environmental Factors, H. B. Peterson, T. H. Goodding

Nebraska Agricultural Experiment Station: Historical Research Bulletins

In this investigation a survey of Nebraska soils has been made in order to determine the distribution of the aerobic nonsymbiotic and symbiotic nitrogen fixers of the genera Azotobacter and Rhizobium respectively. In connection with this survey, some of the characteristics of the soils which may bring about this distribution were studied. Up to this time practically no research has been reported on the microflora of the soils of Nebraska. Hence there is little basis for predicting the activity of these organisms under environmental conditions as they exist here. It is hoped that this work will not only supply some …

The Effects Of A Carbohydrate Deficient Diet On The Mouse, Walter Rudolph Sala

Bachelors’ Theses

Deficient diets have been used extensively as the basis for zoological experiments concerning the metabolism, and dietary requirements of individual animals. The majority of this work has been carried on with the rat as the subject, and resulting external physical variations as the experimental aim. The writer used the mouse as his subject, but, since no literature was available concerning this animal, a few similar experiments performed on the rat will be cited.

Tenth Annual Convention Of The Junior Academy Of Science Of Iowa, April 25 And 26, 1941, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.

Fifty-Fifth Annual Meeting Of The Iowa Academy Of Science And The Tenth Annual Convention Of The Junior Academy Of Science Of Iowa, April 25 And 26, 1941, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.

Front Matter

Journal of the Minnesota Academy of Science

No abstract provided.

Abstract Papers

Journal of the Minnesota Academy of Science

No abstract provided.