Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics Commons

Open Access. Powered by Scholars. Published by Universities.®

PDF

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type

Articles 289471 - 289500 of 292587

Full-Text Articles in Physical Sciences and Mathematics

Test 397: Allis-Chalmers Model Hd-19, Nebraska Tractor Test Lab Jan 1948

Test 397: Allis-Chalmers Model Hd-19, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary. All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University. Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …


Test 400: Intercontinental Model C-26, Nebraska Tractor Test Lab Jan 1948

Test 400: Intercontinental Model C-26, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …


Test 401: Masey-Harris Pony, Nebraska Tractor Test Lab Jan 1948

Test 401: Masey-Harris Pony, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …


Test 403: Massey-Harris Model 22 Rt, Nebraska Tractor Test Lab Jan 1948

Test 403: Massey-Harris Model 22 Rt, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …


Test 424: Silver King 3 Wheel Row Crop, Nebraska Tractor Test Lab Jan 1948

Test 424: Silver King 3 Wheel Row Crop, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …


A Study Of The Prussian Blue Test For Nitrogen, Marilyn M. Erickson Jan 1948

A Study Of The Prussian Blue Test For Nitrogen, Marilyn M. Erickson

Bachelors’ Theses

The problem of obtaining good nitrogen tests on all types of organic compounds interested the author as a re­sult of past experience in the identification of organic compounds.

The practical application of a positive solution to this problem would be an aid to the students of charac­terization of organic compounds. It is necessary for them to make an elementary analysis in order to determine the class into which the unknown compound belongs. A nitrogen test which will give definite results will eliminate any doubt as to the presence of nitrogen.


Preparation And Physical Properties Of Some Unsymmetrically Substituted Ethanes, William F. Buth Jan 1948

Preparation And Physical Properties Of Some Unsymmetrically Substituted Ethanes, William F. Buth

Bachelors’ Theses

Early in 1947, while investigating the potentialities of various compounds for use as liquid dielectric materials, A method was found for the preparation of unsymmetrical ditolyl ethane by a condensation method using sulfuric acid. This material was thought to have excellent dielectric characteristics so it was prepared and tested. The tests were favorable enough, to warrant further investigation into the field of the unsymmetrical ethanes. Being aware of the physical properties required for a good liquid dielectric; it was proposed to prepare a few of the related compounds for which no data was known to exist and to select those …


Review Of The Effects Of Ddt In The Blue Crab, Callinectes Sapidus, Willard A. Van Engel Jan 1948

Review Of The Effects Of Ddt In The Blue Crab, Callinectes Sapidus, Willard A. Van Engel

Reports

Notes on the usage and effects of DDT.


Dokümantasyon Anadolu'da Ladi̇ni̇en Ve Karni̇en Transgresyonu, K. Leuchs, M. Ati̇k Jan 1948

Dokümantasyon Anadolu'da Ladi̇ni̇en Ve Karni̇en Transgresyonu, K. Leuchs, M. Ati̇k

Bulletin of the Mineral Research and Exploration

No abstract provided.


The Migration Of Acyl Groups In Ortho-Aminophenols., Edgar Dumont Smith Jan 1948

The Migration Of Acyl Groups In Ortho-Aminophenols., Edgar Dumont Smith

LSU Historical Dissertations and Theses

No abstract provided.


Microchemical Identification Of Amidone., Robert C. Watson Jan 1948

Microchemical Identification Of Amidone., Robert C. Watson

Electronic Theses and Dissertations

No abstract provided.


Some Reactions Of Chloro-Cyclo-Hexanone And Its Derivatives And The Synthesis Of 1 Chloro-2 Methyl Cyclo Hexene., Elle Bolt Jan 1948

Some Reactions Of Chloro-Cyclo-Hexanone And Its Derivatives And The Synthesis Of 1 Chloro-2 Methyl Cyclo Hexene., Elle Bolt

Electronic Theses and Dissertations

No abstract provided.


Studies On The Natural History Of The Limpets Of The Family Acmaedae, Ferdinand Stanley Ruth Jan 1948

Studies On The Natural History Of The Limpets Of The Family Acmaedae, Ferdinand Stanley Ruth

University of the Pacific Theses and Dissertations

This thesis is a report of the findings of two years of part-time work on the limpets of the family Acmaedae. The major portion of the work was done on the Monterey Peninsula between Point Pines, 36° 38' 30" N. latitude, 121° 56' 00" W. longitude, and Pescadero Point 30° 33' 40" N. latitude, 121° 56' 30" W. longitude. The work on homing in Acmaea persona, artificial parthenogenesis in the eggs of Acmaea pelta, and artifical insemination of the eggs of Acmaea pelta was carried on at the Pacific Marine Station, Dillon Beach, California at 38° 14' 30" N. latitude, …


Petrology Of The Upper Marietta And Hundred Sandstones In Southeastern Ohio, Wayne Dudley Martin Jan 1948

Petrology Of The Upper Marietta And Hundred Sandstones In Southeastern Ohio, Wayne Dudley Martin

Graduate Theses, Dissertations, and Problem Reports

A petrographic study was made of two Lower Permian (Dunkard Series) sandstones in southeastern Ohio. The sandstone members with which the investigation was concerned are the Upper Marietta sandstone and the Hundred sandstone. The study was made in order to determine the origin of the sandstones and the practicability of applying geologic methods to the grindstone industry. The results of the study indicate that although some of the constituents of these sandstones were derived from igneous and sedimentary source rocks, a relatively large amount of material was derived from metamorphic rocks. The detritus was transported from the east and deposited …


Ground-Water Levels In The Lower Platte River Valley, Nebraska, H. A. Waite Jan 1948

Ground-Water Levels In The Lower Platte River Valley, Nebraska, H. A. Waite

Conservation and Survey Division

No abstract provided.


Progress Of Fundamental Survey In Nebraska, G. E. Condra Jan 1948

Progress Of Fundamental Survey In Nebraska, G. E. Condra

Conservation and Survey Division

No abstract provided.


A Phase Of The Upper Devonian Of Western Highland County, Virginia, Helen Pulver Foreman Jan 1948

A Phase Of The Upper Devonian Of Western Highland County, Virginia, Helen Pulver Foreman

Honors Papers

This paper is a study of the Brallier and Chemung formations of west Highland County, Virginia. The limits of the Brallier formation are determined on the basis ot faunal and lithological evidence, and correlations made with formations in New York, Pennsylvania, Maryland and West Virginia.

The field work was carried on during the latter part of the summer of 1947 and the identification and correlations worked out in the winter of 1947 and the spring of 1948.


A Textural Analysis Of The Bedford Shale Of Lorain County, Ohio, Troy James Laswell Jan 1948

A Textural Analysis Of The Bedford Shale Of Lorain County, Ohio, Troy James Laswell

Honors Papers

Throughout the course of the school year 1947-48 the writer has collected specimens of the Bedford shale from various localities within Lorain County, Ohio. Textural and mineralogical analyses have been made of the specimens in order to determine the textural and petrologic variation between the two facies, and whether each of the facies was deposited under similar conditions.


A Geological Report On South Boulder Canyon And The Mayflower Mine-Renova Areas, B. R. Alto Jan 1948

A Geological Report On South Boulder Canyon And The Mayflower Mine-Renova Areas, B. R. Alto

Bachelors Theses and Reports, 1928 - 1970

The purpose of this report is to serve as a written explanation of the accompanying geologic maps and columnar sec­tion. Each year the senior students in mining and geological engineering at the Montana School of Mines spend two weeks in the field where they learn the fundamentals of geologic mapping and related field studies. An additional week is spent at the school where maps are assembled, prints made, end other work is done in preparation for the writing of the report.


Odor Report (1947), Walter A. Lawrance Oct 1947

Odor Report (1947), Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.


Press Reports (1947), Walter A. Lawrance Oct 1947

Press Reports (1947), Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.


The Post-Kansan Geologic History Of The Lower Platte Valley Area, Gilbert Carl Lueninghoener Sep 1947

The Post-Kansan Geologic History Of The Lower Platte Valley Area, Gilbert Carl Lueninghoener

University Studies (University of Nebraska): Papers

This investigation is essentially a geomorphological study of the lower Platte River Valley area in eastern Nebraska. The area comprises Saunders, Dodge, Washington, Douglas, Sarpy, and Cass counties. The area defined above is one of the most critically located of any for the study of the post-Kansan history of the lower Platte River Valley. It lies between the older till (Nebraskan and Kansan) borders to the west and the younger till (Illinoian, Iowan, and Wisconsin) borders to the east. Physiographic changes have therefore transpired in a strictly post-Kansan periglacial region. The Kansan till is the youngest in the area. The …


A Geological Report On Several Localities In The Northwestern Tobacco Root Mountains, Rudi Forhan Sep 1947

A Geological Report On Several Localities In The Northwestern Tobacco Root Mountains, Rudi Forhan

Bachelors Theses and Reports, 1928 - 1970

To better acquaint seniors in Geology and mining with actual field practice, the Montana School of Mines offer a course in Geologic Field Mapping, during the three weeks preceding the opening of the fall semester. The first two weeks are spent in actual field mapping of the geologic formations near Whitehall, Montana, while the third week is spent back on the campus compiling data and finishing maps started in the field.


Geology Of The Renova-Bone Basin And Mayflower Mine Areas, R. L. Burns Sep 1947

Geology Of The Renova-Bone Basin And Mayflower Mine Areas, R. L. Burns

Bachelors Theses and Reports, 1928 - 1970

This report has been compiled from the data collected during the September, 1947, geologic field trip of the Montana School of Mines. The trip, under the direction of Dr. E. S. Perry, consisted of two weeks of field mapping and observation near Whitehall, Montana, and one week at the Montana School of Mines preparing this report.


Mayflower, Renova Basin, And South Boulder Creek Areas, Howard Nickelson Sep 1947

Mayflower, Renova Basin, And South Boulder Creek Areas, Howard Nickelson

Bachelors Theses and Reports, 1928 - 1970

In Montana at the turn of the century a great many men sought the riches buried in the earth's crust. Prospectors fanning out from Butte and other early Montana mining areas located veins at the Mayflower, Renova, and Gold Hill areas.


Alkylaminoalkyl Esters Of 2-Thiophene Carboxylic And Furoic Acids, Henry Alouis Rutter Jr. Aug 1947

Alkylaminoalkyl Esters Of 2-Thiophene Carboxylic And Furoic Acids, Henry Alouis Rutter Jr.

Master's Theses

The association of local anesthetic activity with alkaninoalkyl ester of aromatic carbonyl acids has been well susbstantietes. Compounds obtained as varieties of the "anesthesiophoric" group are usually capable of some degree of local anesthetic activity.


Arithmetical Vocabulary : A Factor In Verbal Problem Solving In Sixth Grade Arithmetic, Ernest A. Hoopes Jul 1947

Arithmetical Vocabulary : A Factor In Verbal Problem Solving In Sixth Grade Arithmetic, Ernest A. Hoopes

Master's Theses

During the writer's experience of teaching in elementary and junior high schools in Kansas he had excellent opportunity through supervision and classroom teaching to note a more-than-ordinary difficulty experienced by most children in the subject of arithmetic. Not only was the dull student baffled by the subject but many times the average and good students were "lost" when certain problems were presented. The exceptional. troublesomeness of this subject led the writer to ponder on the possible cause or causes of incorrect problem solving. One thing was apparent from observation and this was that many children seemed to lack a readiness …


Alkylaminoalkyl Aryoxyacetates, William Kenneth Easley Jul 1947

Alkylaminoalkyl Aryoxyacetates, William Kenneth Easley

Master's Theses

Numerous inInvestigations into the preparation, properties, and effects plant growth substances have been carried out. It has been shown that phenoxyacetic acids, napthoxyacetic acids, esters, anides and salts of phenoxyacetic acids and certain substituted products of these acids are plant growth promoting substances.

It is the purpose ot this work to produce esters of phenoxyacetic and napthoxyacetic acids which contain a secondary amino group and as a result of their ability to form acid salts, such as hydrochlorides, water soluble compounds. These compounds would be readily applicable to plants in sprays.


A Device For Determining The Electrical Characteristics Of Common Industrial Electronic Tubes, Addison Dabney Campbell Jul 1947

A Device For Determining The Electrical Characteristics Of Common Industrial Electronic Tubes, Addison Dabney Campbell

Master's Theses

Many tube checkers designed for radio receiving tubes have been developed . Most of the devices for test­ ing these tubes do little more than check the emission of the cathode. This is usually accomplished by applying alternating voltage to the plate of the tube undergoing the test and reading the direct-current component of the plate current . In this case, the control grid bias volt­ age is usually set at a fixed value although sometimes facilities for varying the bias are provided. If the tube is of the multi-grid type, all the grids except the control grid are connected …


Geology And Mines Of The Upper Blackfoot Valley, Montana, Thomas K. Shea Jun 1947

Geology And Mines Of The Upper Blackfoot Valley, Montana, Thomas K. Shea

Bachelors Theses and Reports, 1928 - 1970

The purchase and continued operation of the Mike Horse mine in the Heddleston district, by the American Smelting and Re­fining Company, gives the Blackfoot Valley a renewed promise of a prosperous future in its role as a mining district. In the past, large amounts of placer gold were recovered from the gulches of the area, however, because of the transporta­tion facilities, only the upper portions of a few lodes were exploited by the early miners.